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authorBenjamin Dobell <benjamin.dobell+github@glassechidna.com.au>2010-12-04 14:25:04 +0100
committerBenjamin Dobell <benjamin.dobell+github@glassechidna.com.au>2010-12-04 14:25:04 +0100
commit46f2c1134d276944fb74584a61d90cc363aee7eb (patch)
tree6fa14b7ef509a3fb84305dec013dd24bcae6c17d /libusb-1.0/libusb/os
parentAddresses: (diff)
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Diffstat (limited to '')
-rw-r--r--libusb-1.0/libusb/os/.DS_Storebin0 -> 6148 bytes
-rw-r--r--libusb-1.0/libusb/os/._.DS_Storebin0 -> 4096 bytes
-rw-r--r--libusb-1.0/libusb/os/darwin_usb.c1545
-rw-r--r--libusb-1.0/libusb/os/darwin_usb.h167
-rw-r--r--libusb-1.0/libusb/os/linux_usbfs.c2220
-rw-r--r--libusb-1.0/libusb/os/linux_usbfs.h138
-rw-r--r--libusb-1.0/libusb/os/poll_posix.h12
-rw-r--r--libusb-1.0/libusb/os/poll_windows.c857
-rw-r--r--libusb-1.0/libusb/os/poll_windows.h122
-rw-r--r--libusb-1.0/libusb/os/threads_posix.h46
-rw-r--r--libusb-1.0/libusb/os/threads_windows.c221
-rw-r--r--libusb-1.0/libusb/os/threads_windows.h84
-rw-r--r--libusb-1.0/libusb/os/windows_usb.c4226
-rw-r--r--libusb-1.0/libusb/os/windows_usb.h784
14 files changed, 10422 insertions, 0 deletions
diff --git a/libusb-1.0/libusb/os/.DS_Store b/libusb-1.0/libusb/os/.DS_Store
new file mode 100644
index 0000000..90333e8
--- /dev/null
+++ b/libusb-1.0/libusb/os/.DS_Store
Binary files differ
diff --git a/libusb-1.0/libusb/os/._.DS_Store b/libusb-1.0/libusb/os/._.DS_Store
new file mode 100644
index 0000000..338bd7b
--- /dev/null
+++ b/libusb-1.0/libusb/os/._.DS_Store
Binary files differ
diff --git a/libusb-1.0/libusb/os/darwin_usb.c b/libusb-1.0/libusb/os/darwin_usb.c
new file mode 100644
index 0000000..646c938
--- /dev/null
+++ b/libusb-1.0/libusb/os/darwin_usb.c
@@ -0,0 +1,1545 @@
+/*
+ * darwin backend for libusb 1.0
+ * Copyright (C) 2008-2010 Nathan Hjelm <hjelmn@users.sourceforge.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <config.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <mach/clock.h>
+#include <mach/clock_types.h>
+#include <mach/mach_host.h>
+
+#include <mach/mach_port.h>
+#include <IOKit/IOCFBundle.h>
+#include <IOKit/usb/IOUSBLib.h>
+#include <IOKit/IOCFPlugIn.h>
+
+#include "darwin_usb.h"
+
+static mach_port_t libusb_darwin_mp = 0; /* master port */
+static CFRunLoopRef libusb_darwin_acfl = NULL; /* async cf loop */
+static int initCount = 0;
+
+/* async event thread */
+static pthread_t libusb_darwin_at;
+
+static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian);
+static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface);
+static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface);
+static int darwin_reset_device(struct libusb_device_handle *dev_handle);
+static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0);
+
+static const char *darwin_error_str (int result) {
+ switch (result) {
+ case kIOReturnSuccess:
+ return "no error";
+ case kIOReturnNotOpen:
+ return "device not opened for exclusive access";
+ case kIOReturnNoDevice:
+ return "no connection to an IOService";
+ case kIOUSBNoAsyncPortErr:
+ return "no async port has been opened for interface";
+ case kIOReturnExclusiveAccess:
+ return "another process has device opened for exclusive access";
+ case kIOUSBPipeStalled:
+ return "pipe is stalled";
+ case kIOReturnError:
+ return "could not establish a connection to the Darwin kernel";
+ case kIOUSBTransactionTimeout:
+ return "transaction timed out";
+ case kIOReturnBadArgument:
+ return "invalid argument";
+ case kIOReturnAborted:
+ return "transaction aborted";
+ case kIOReturnNotResponding:
+ return "device not responding";
+ case kIOReturnOverrun:
+ return "data overrun";
+ case kIOReturnCannotWire:
+ return "physical memory can not be wired down";
+ default:
+ return "unknown error";
+ }
+}
+
+static int darwin_to_libusb (int result) {
+ switch (result) {
+ case kIOReturnUnderrun:
+ case kIOReturnSuccess:
+ return LIBUSB_SUCCESS;
+ case kIOReturnNotOpen:
+ case kIOReturnNoDevice:
+ return LIBUSB_ERROR_NO_DEVICE;
+ case kIOReturnExclusiveAccess:
+ return LIBUSB_ERROR_ACCESS;
+ case kIOUSBPipeStalled:
+ return LIBUSB_ERROR_PIPE;
+ case kIOReturnBadArgument:
+ return LIBUSB_ERROR_INVALID_PARAM;
+ case kIOUSBTransactionTimeout:
+ return LIBUSB_ERROR_TIMEOUT;
+ case kIOReturnNotResponding:
+ case kIOReturnAborted:
+ case kIOReturnError:
+ case kIOUSBNoAsyncPortErr:
+ default:
+ return LIBUSB_ERROR_OTHER;
+ }
+}
+
+
+static int ep_to_pipeRef(struct libusb_device_handle *dev_handle, uint8_t ep, uint8_t *pipep, uint8_t *ifcp) {
+ struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
+
+ /* current interface */
+ struct __darwin_interface *cInterface;
+
+ int8_t i, iface;
+
+ usbi_info (HANDLE_CTX(dev_handle), "converting ep address 0x%02x to pipeRef and interface", ep);
+
+ for (iface = 0 ; iface < USB_MAXINTERFACES ; iface++) {
+ cInterface = &priv->interfaces[iface];
+
+ if (dev_handle->claimed_interfaces & (1 << iface)) {
+ for (i = 0 ; i < cInterface->num_endpoints ; i++) {
+ if (cInterface->endpoint_addrs[i] == ep) {
+ *pipep = i + 1;
+ *ifcp = iface;
+ usbi_info (HANDLE_CTX(dev_handle), "pipe %d on interface %d matches", *pipep, *ifcp);
+ return 0;
+ }
+ }
+ }
+ }
+
+ /* No pipe found with the correct endpoint address */
+ usbi_warn (HANDLE_CTX(dev_handle), "no pipeRef found with endpoint address 0x%02x.", ep);
+
+ return -1;
+}
+
+static int usb_setup_device_iterator (io_iterator_t *deviceIterator) {
+ return IOServiceGetMatchingServices(libusb_darwin_mp, IOServiceMatching(kIOUSBDeviceClassName), deviceIterator);
+}
+
+static usb_device_t **usb_get_next_device (io_iterator_t deviceIterator, UInt32 *locationp) {
+ io_cf_plugin_ref_t *plugInInterface = NULL;
+ usb_device_t **device;
+ io_service_t usbDevice;
+ long result;
+ SInt32 score;
+
+ if (!IOIteratorIsValid (deviceIterator))
+ return NULL;
+
+
+ while ((usbDevice = IOIteratorNext(deviceIterator))) {
+ result = IOCreatePlugInInterfaceForService(usbDevice, kIOUSBDeviceUserClientTypeID,
+ kIOCFPlugInInterfaceID, &plugInInterface,
+ &score);
+ if (kIOReturnSuccess == result && plugInInterface)
+ break;
+
+ usbi_dbg ("libusb/darwin.c usb_get_next_device: could not set up plugin for service: %s\n", darwin_error_str (result));
+ }
+
+ if (!usbDevice)
+ return NULL;
+
+ (void)IOObjectRelease(usbDevice);
+ (void)(*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(DeviceInterfaceID),
+ (LPVOID)&device);
+
+ (*plugInInterface)->Stop(plugInInterface);
+ IODestroyPlugInInterface (plugInInterface);
+
+ /* get the location from the device */
+ if (locationp)
+ (*(device))->GetLocationID(device, locationp);
+
+ return device;
+}
+
+static kern_return_t darwin_get_device (uint32_t dev_location, usb_device_t ***darwin_device) {
+ kern_return_t kresult;
+ UInt32 location;
+ io_iterator_t deviceIterator;
+
+ kresult = usb_setup_device_iterator (&deviceIterator);
+ if (kresult)
+ return kresult;
+
+ /* This port of libusb uses locations to keep track of devices. */
+ while ((*darwin_device = usb_get_next_device (deviceIterator, &location)) != NULL) {
+ if (location == dev_location)
+ break;
+
+ (**darwin_device)->Release(*darwin_device);
+ }
+
+ IOObjectRelease (deviceIterator);
+
+ if (!(*darwin_device))
+ return kIOReturnNoDevice;
+
+ return kIOReturnSuccess;
+}
+
+
+
+static void darwin_devices_detached (void *ptr, io_iterator_t rem_devices) {
+ struct libusb_context *ctx = (struct libusb_context *)ptr;
+ struct libusb_device_handle *handle;
+ struct darwin_device_priv *dpriv;
+ struct darwin_device_handle_priv *priv;
+
+ io_service_t device;
+ long location;
+ CFTypeRef locationCF;
+ UInt32 message;
+
+ usbi_info (ctx, "a device has been detached");
+
+ while ((device = IOIteratorNext (rem_devices)) != 0) {
+ /* get the location from the i/o registry */
+ locationCF = IORegistryEntryCreateCFProperty (device, CFSTR(kUSBDevicePropertyLocationID), kCFAllocatorDefault, 0);
+
+ CFNumberGetValue(locationCF, kCFNumberLongType, &location);
+ CFRelease (locationCF);
+ IOObjectRelease (device);
+
+ usbi_mutex_lock(&ctx->open_devs_lock);
+ list_for_each_entry(handle, &ctx->open_devs, list, struct libusb_device_handle) {
+ dpriv = (struct darwin_device_priv *)handle->dev->os_priv;
+
+ /* the device may have been opened several times. write to each handle's event descriptor */
+ if (dpriv->location == location && handle->os_priv) {
+ priv = (struct darwin_device_handle_priv *)handle->os_priv;
+
+ message = MESSAGE_DEVICE_GONE;
+ write (priv->fds[1], &message, sizeof (message));
+ }
+ }
+
+ usbi_mutex_unlock(&ctx->open_devs_lock);
+ }
+}
+
+static void darwin_clear_iterator (io_iterator_t iter) {
+ io_service_t device;
+
+ while ((device = IOIteratorNext (iter)) != 0)
+ IOObjectRelease (device);
+}
+
+static void *event_thread_main (void *arg0) {
+ IOReturn kresult;
+ struct libusb_context *ctx = (struct libusb_context *)arg0;
+
+ /* hotplug (device removal) source */
+ CFRunLoopSourceRef libusb_notification_cfsource;
+ io_notification_port_t libusb_notification_port;
+ io_iterator_t libusb_rem_device_iterator;
+
+ usbi_info (ctx, "creating hotplug event source");
+
+ CFRetain (CFRunLoopGetCurrent ());
+
+ /* add the notification port to the run loop */
+ libusb_notification_port = IONotificationPortCreate (libusb_darwin_mp);
+ libusb_notification_cfsource = IONotificationPortGetRunLoopSource (libusb_notification_port);
+ CFRunLoopAddSource(CFRunLoopGetCurrent (), libusb_notification_cfsource, kCFRunLoopDefaultMode);
+
+ /* create notifications for removed devices */
+ kresult = IOServiceAddMatchingNotification (libusb_notification_port, kIOTerminatedNotification,
+ IOServiceMatching(kIOUSBDeviceClassName),
+ (IOServiceMatchingCallback)darwin_devices_detached,
+ (void *)ctx, &libusb_rem_device_iterator);
+
+ if (kresult != kIOReturnSuccess) {
+ usbi_err (ctx, "could not add hotplug event source: %s", darwin_error_str (kresult));
+
+ pthread_exit ((void *)kresult);
+ }
+
+ /* arm notifiers */
+ darwin_clear_iterator (libusb_rem_device_iterator);
+
+ /* let the main thread know about the async runloop */
+ libusb_darwin_acfl = CFRunLoopGetCurrent ();
+
+ usbi_info (ctx, "thread ready to receive events");
+
+ /* run the runloop */
+ CFRunLoopRun();
+
+ usbi_info (ctx, "thread exiting");
+
+ /* delete notification port */
+ CFRunLoopSourceInvalidate (libusb_notification_cfsource);
+ IONotificationPortDestroy (libusb_notification_port);
+
+ CFRelease (CFRunLoopGetCurrent ());
+
+ libusb_darwin_acfl = NULL;
+
+ pthread_exit (0);
+}
+
+static int darwin_init(struct libusb_context *ctx) {
+ IOReturn kresult;
+
+ if (!(initCount++)) {
+ /* Create the master port for talking to IOKit */
+ if (!libusb_darwin_mp) {
+ kresult = IOMasterPort (MACH_PORT_NULL, &libusb_darwin_mp);
+
+ if (kresult != kIOReturnSuccess || !libusb_darwin_mp)
+ return darwin_to_libusb (kresult);
+ }
+
+ pthread_create (&libusb_darwin_at, NULL, event_thread_main, (void *)ctx);
+
+ while (!libusb_darwin_acfl)
+ usleep (10);
+ }
+
+ return 0;
+}
+
+static void darwin_exit (void) {
+ if (!(--initCount)) {
+ void *ret;
+
+ /* stop the async runloop */
+ CFRunLoopStop (libusb_darwin_acfl);
+ pthread_join (libusb_darwin_at, &ret);
+
+ if (libusb_darwin_mp)
+ mach_port_deallocate(mach_task_self(), libusb_darwin_mp);
+
+ libusb_darwin_mp = 0;
+ }
+}
+
+static int darwin_get_device_descriptor(struct libusb_device *dev, unsigned char *buffer, int *host_endian) {
+ struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
+
+ /* return cached copy */
+ memmove (buffer, &(priv->dev_descriptor), DEVICE_DESC_LENGTH);
+
+ *host_endian = 0;
+
+ return 0;
+}
+
+static int get_configuration_index (struct libusb_device *dev, int config_value) {
+ struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
+ UInt8 i, numConfig;
+ IOUSBConfigurationDescriptorPtr desc;
+ IOReturn kresult;
+
+ /* is there a simpler way to determine the index? */
+ kresult = (*(priv->device))->GetNumberOfConfigurations (priv->device, &numConfig);
+ if (kresult != kIOReturnSuccess)
+ return darwin_to_libusb (kresult);
+
+ for (i = 0 ; i < numConfig ; i++) {
+ (*(priv->device))->GetConfigurationDescriptorPtr (priv->device, i, &desc);
+
+ if (desc->bConfigurationValue == config_value)
+ return i;
+ }
+
+ /* configuration not found */
+ return LIBUSB_ERROR_OTHER;
+}
+
+static int darwin_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian) {
+ struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
+ int config_index;
+
+ if (0 == priv->active_config)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ config_index = get_configuration_index (dev, priv->active_config);
+ if (config_index < 0)
+ return config_index;
+
+ return darwin_get_config_descriptor (dev, config_index, buffer, len, host_endian);
+}
+
+static int darwin_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian) {
+ struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
+ IOUSBConfigurationDescriptorPtr desc;
+ IOReturn kresult;
+ usb_device_t **device = NULL;
+
+ if (!priv)
+ return LIBUSB_ERROR_OTHER;
+
+ if (!priv->device) {
+ kresult = darwin_get_device (priv->location, &device);
+ if (kresult || !device) {
+ usbi_err (DEVICE_CTX (dev), "could not find device: %s", darwin_error_str (kresult));
+
+ return darwin_to_libusb (kresult);
+ }
+
+ /* don't have to open the device to get a config descriptor */
+ } else
+ device = priv->device;
+
+ kresult = (*device)->GetConfigurationDescriptorPtr (device, config_index, &desc);
+ if (kresult == kIOReturnSuccess) {
+ /* copy descriptor */
+ if (libusb_le16_to_cpu(desc->wTotalLength) < len)
+ len = libusb_le16_to_cpu(desc->wTotalLength);
+
+ memmove (buffer, desc, len);
+
+ /* GetConfigurationDescriptorPtr returns the descriptor in USB bus order */
+ *host_endian = 0;
+ }
+
+ if (!priv->device)
+ (*device)->Release (device);
+
+ return darwin_to_libusb (kresult);
+}
+
+/* check whether the os has configured the device */
+static int darwin_check_configuration (struct libusb_context *ctx, struct libusb_device *dev, usb_device_t **darwin_device) {
+ struct darwin_device_priv *priv = (struct darwin_device_priv *)dev->os_priv;
+
+ IOUSBConfigurationDescriptorPtr configDesc;
+ IOUSBFindInterfaceRequest request;
+ kern_return_t kresult;
+ io_iterator_t interface_iterator;
+ io_service_t firstInterface;
+
+ if (priv->dev_descriptor.bNumConfigurations < 1) {
+ usbi_err (ctx, "device has no configurations");
+ return LIBUSB_ERROR_OTHER; /* no configurations at this speed so we can't use it */
+ }
+
+ /* find the first configuration */
+ kresult = (*darwin_device)->GetConfigurationDescriptorPtr (darwin_device, 0, &configDesc);
+ priv->first_config = (kIOReturnSuccess == kresult) ? configDesc->bConfigurationValue : 1;
+
+ /* check if the device is already configured. there is probably a better way than iterating over the
+ to accomplish this (the trick is we need to avoid a call to GetConfigurations since buggy devices
+ might lock up on the device request) */
+
+ /* Setup the Interface Request */
+ request.bInterfaceClass = kIOUSBFindInterfaceDontCare;
+ request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare;
+ request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare;
+ request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
+
+ kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator);
+ if (kresult)
+ return darwin_to_libusb (kresult);
+
+ /* iterate once */
+ firstInterface = IOIteratorNext(interface_iterator);
+
+ /* done with the interface iterator */
+ IOObjectRelease(interface_iterator);
+
+ if (firstInterface) {
+ IOObjectRelease (firstInterface);
+
+ /* device is configured */
+ if (priv->dev_descriptor.bNumConfigurations == 1)
+ /* to avoid problems with some devices get the configurations value from the configuration descriptor */
+ priv->active_config = priv->first_config;
+ else
+ /* devices with more than one configuration should work with GetConfiguration */
+ (*darwin_device)->GetConfiguration (darwin_device, &priv->active_config);
+ } else
+ /* not configured */
+ priv->active_config = 0;
+
+ usbi_info (ctx, "active config: %u, first config: %u", priv->active_config, priv->first_config);
+
+ return 0;
+}
+
+static int process_new_device (struct libusb_context *ctx, usb_device_t **device, UInt32 locationID, struct discovered_devs **_discdevs) {
+ struct darwin_device_priv *priv;
+ struct libusb_device *dev;
+ struct discovered_devs *discdevs;
+ UInt16 address, idVendor, idProduct;
+ UInt8 bDeviceClass, bDeviceSubClass;
+ IOUSBDevRequest req;
+ int ret = 0, need_unref = 0;
+
+ do {
+ dev = usbi_get_device_by_session_id(ctx, locationID);
+ if (!dev) {
+ usbi_info (ctx, "allocating new device for location 0x%08x", locationID);
+ dev = usbi_alloc_device(ctx, locationID);
+ need_unref = 1;
+ } else
+ usbi_info (ctx, "using existing device for location 0x%08x", locationID);
+
+ if (!dev) {
+ ret = LIBUSB_ERROR_NO_MEM;
+ break;
+ }
+
+ priv = (struct darwin_device_priv *)dev->os_priv;
+
+ /* Set up request for device descriptor */
+ req.bmRequestType = USBmakebmRequestType(kUSBIn, kUSBStandard, kUSBDevice);
+ req.bRequest = kUSBRqGetDescriptor;
+ req.wValue = kUSBDeviceDesc << 8;
+ req.wIndex = 0;
+ req.wLength = sizeof(IOUSBDeviceDescriptor);
+ req.pData = &(priv->dev_descriptor);
+
+ (*(device))->GetDeviceAddress (device, (USBDeviceAddress *)&address);
+ (*(device))->GetDeviceProduct (device, &idProduct);
+ (*(device))->GetDeviceVendor (device, &idVendor);
+ (*(device))->GetDeviceClass (device, &bDeviceClass);
+ (*(device))->GetDeviceSubClass (device, &bDeviceSubClass);
+
+ /**** retrieve device descriptors ****/
+ /* according to Apple's documentation the device must be open for DeviceRequest but we may not be able to open some
+ * devices and Apple's USB Prober doesn't bother to open the device before issuing a descriptor request */
+ ret = (*(device))->DeviceRequest (device, &req);
+ if (ret != kIOReturnSuccess) {
+ int try_unsuspend = 1;
+#if DeviceVersion >= 320
+ UInt32 info;
+
+ /* device may be suspended. unsuspend it and try again */
+ /* IOUSBFamily 320+ provides a way to detect device suspension but earlier versions do not */
+ (void)(*device)->GetUSBDeviceInformation (device, &info);
+
+ try_unsuspend = info & (1 << kUSBInformationDeviceIsSuspendedBit);
+#endif
+
+ /* the device should be open before to device is unsuspended */
+ (void) (*device)->USBDeviceOpenSeize(device);
+
+ if (try_unsuspend) {
+ /* resume the device */
+ (void)(*device)->USBDeviceSuspend (device, 0);
+
+ ret = (*(device))->DeviceRequest (device, &req);
+
+ /* resuspend the device */
+ (void)(*device)->USBDeviceSuspend (device, 1);
+ }
+
+ (*device)->USBDeviceClose (device);
+ }
+
+ if (ret != kIOReturnSuccess) {
+ usbi_warn (ctx, "could not retrieve device descriptor: %s. skipping device", darwin_error_str (ret));
+ ret = -1;
+ break;
+ }
+
+ /**** end: retrieve device descriptors ****/
+
+ /* catch buggy hubs (which appear to be virtual). Apple's own USB prober has problems with these devices. */
+ if (libusb_le16_to_cpu (priv->dev_descriptor.idProduct) != idProduct) {
+ /* not a valid device */
+ usbi_warn (ctx, "idProduct from iokit (%04x) does not match idProduct in descriptor (%04x). skipping device",
+ idProduct, libusb_le16_to_cpu (priv->dev_descriptor.idProduct));
+ ret = -1;
+ break;
+ }
+
+ dev->bus_number = locationID >> 24;
+ dev->device_address = address;
+
+ /* check current active configuration (and cache the first configuration value-- which may be used by claim_interface) */
+ ret = darwin_check_configuration (ctx, dev, device);
+ if (ret < 0)
+ break;
+
+ /* save our location, we'll need this later */
+ priv->location = locationID;
+ snprintf(priv->sys_path, 20, "%03i-%04x-%04x-%02x-%02x", address, idVendor, idProduct, bDeviceClass, bDeviceSubClass);
+
+ ret = usbi_sanitize_device (dev);
+ if (ret < 0)
+ break;
+
+ /* append the device to the list of discovered devices */
+ discdevs = discovered_devs_append(*_discdevs, dev);
+ if (!discdevs) {
+ ret = LIBUSB_ERROR_NO_MEM;
+ break;
+ }
+
+ *_discdevs = discdevs;
+
+ usbi_info (ctx, "found device with address %d at %s", dev->device_address, priv->sys_path);
+ } while (0);
+
+ if (need_unref)
+ libusb_unref_device(dev);
+
+ return ret;
+}
+
+static int darwin_get_device_list(struct libusb_context *ctx, struct discovered_devs **_discdevs) {
+ io_iterator_t deviceIterator;
+ usb_device_t **device;
+ kern_return_t kresult;
+ UInt32 location;
+
+ if (!libusb_darwin_mp)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ kresult = usb_setup_device_iterator (&deviceIterator);
+ if (kresult != kIOReturnSuccess)
+ return darwin_to_libusb (kresult);
+
+ while ((device = usb_get_next_device (deviceIterator, &location)) != NULL) {
+ (void) process_new_device (ctx, device, location, _discdevs);
+
+ (*(device))->Release(device);
+ }
+
+ IOObjectRelease(deviceIterator);
+
+ return 0;
+}
+
+static int darwin_open (struct libusb_device_handle *dev_handle) {
+ struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
+ struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
+ usb_device_t **darwin_device;
+ IOReturn kresult;
+
+ if (0 == dpriv->open_count) {
+ kresult = darwin_get_device (dpriv->location, &darwin_device);
+ if (kresult) {
+ usbi_err (HANDLE_CTX (dev_handle), "could not find device: %s", darwin_error_str (kresult));
+ return darwin_to_libusb (kresult);
+ }
+
+ dpriv->device = darwin_device;
+
+ /* try to open the device */
+ kresult = (*(dpriv->device))->USBDeviceOpenSeize (dpriv->device);
+
+ if (kresult != kIOReturnSuccess) {
+ usbi_err (HANDLE_CTX (dev_handle), "USBDeviceOpen: %s", darwin_error_str(kresult));
+
+ switch (kresult) {
+ case kIOReturnExclusiveAccess:
+ /* it is possible to perform some actions on a device that is not open so do not return an error */
+ priv->is_open = 0;
+
+ break;
+ default:
+ (*(dpriv->device))->Release (dpriv->device);
+ dpriv->device = NULL;
+ return darwin_to_libusb (kresult);
+ }
+ } else {
+ priv->is_open = 1;
+
+ /* create async event source */
+ kresult = (*(dpriv->device))->CreateDeviceAsyncEventSource (dpriv->device, &priv->cfSource);
+
+ CFRetain (libusb_darwin_acfl);
+
+ /* add the cfSource to the aync run loop */
+ CFRunLoopAddSource(libusb_darwin_acfl, priv->cfSource, kCFRunLoopCommonModes);
+ }
+ }
+
+ /* device opened successfully */
+ dpriv->open_count++;
+
+ /* create a file descriptor for notifications */
+ pipe (priv->fds);
+
+ /* set the pipe to be non-blocking */
+ fcntl (priv->fds[1], F_SETFD, O_NONBLOCK);
+
+ usbi_add_pollfd(HANDLE_CTX(dev_handle), priv->fds[0], POLLIN);
+
+ usbi_info (HANDLE_CTX (dev_handle), "device open for access");
+
+ return 0;
+}
+
+static void darwin_close (struct libusb_device_handle *dev_handle) {
+ struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
+ struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
+ IOReturn kresult;
+ int i;
+
+ if (dpriv->open_count == 0) {
+ /* something is probably very wrong if this is the case */
+ usbi_err (HANDLE_CTX (dev_handle), "Close called on a device that was not open!\n");
+ return;
+ }
+
+ dpriv->open_count--;
+
+ /* make sure all interfaces are released */
+ for (i = 0 ; i < USB_MAXINTERFACES ; i++)
+ if (dev_handle->claimed_interfaces & (1 << i))
+ libusb_release_interface (dev_handle, i);
+
+ if (0 == dpriv->open_count) {
+ if (priv->is_open) {
+ /* delete the device's async event source */
+ if (priv->cfSource) {
+ CFRunLoopRemoveSource (libusb_darwin_acfl, priv->cfSource, kCFRunLoopDefaultMode);
+ CFRelease (priv->cfSource);
+ }
+
+ /* close the device */
+ kresult = (*(dpriv->device))->USBDeviceClose(dpriv->device);
+ if (kresult) {
+ /* Log the fact that we had a problem closing the file, however failing a
+ * close isn't really an error, so return success anyway */
+ usbi_err (HANDLE_CTX (dev_handle), "USBDeviceClose: %s", darwin_error_str(kresult));
+ }
+ }
+
+ kresult = (*(dpriv->device))->Release(dpriv->device);
+ if (kresult) {
+ /* Log the fact that we had a problem closing the file, however failing a
+ * close isn't really an error, so return success anyway */
+ usbi_err (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult));
+ }
+
+ dpriv->device = NULL;
+ }
+
+ /* file descriptors are maintained per-instance */
+ usbi_remove_pollfd (HANDLE_CTX (dev_handle), priv->fds[0]);
+ close (priv->fds[1]);
+ close (priv->fds[0]);
+
+ priv->fds[0] = priv->fds[1] = -1;
+}
+
+static int darwin_get_configuration(struct libusb_device_handle *dev_handle, int *config) {
+ struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
+
+ *config = (int) dpriv->active_config;
+
+ return 0;
+}
+
+static int darwin_set_configuration(struct libusb_device_handle *dev_handle, int config) {
+ struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
+ IOReturn kresult;
+ int i;
+
+ /* Setting configuration will invalidate the interface, so we need
+ to reclaim it. First, dispose of existing interfaces, if any. */
+ for (i = 0 ; i < USB_MAXINTERFACES ; i++)
+ if (dev_handle->claimed_interfaces & (1 << i))
+ darwin_release_interface (dev_handle, i);
+
+ kresult = (*(dpriv->device))->SetConfiguration (dpriv->device, config);
+ if (kresult != kIOReturnSuccess)
+ return darwin_to_libusb (kresult);
+
+ /* Reclaim any interfaces. */
+ for (i = 0 ; i < USB_MAXINTERFACES ; i++)
+ if (dev_handle->claimed_interfaces & (1 << i))
+ darwin_claim_interface (dev_handle, i);
+
+ dpriv->active_config = config;
+
+ return 0;
+}
+
+static int darwin_get_interface (usb_device_t **darwin_device, uint8_t ifc, io_service_t *usbInterfacep) {
+ IOUSBFindInterfaceRequest request;
+ uint8_t current_interface;
+ kern_return_t kresult;
+ io_iterator_t interface_iterator;
+
+ *usbInterfacep = IO_OBJECT_NULL;
+
+ /* Setup the Interface Request */
+ request.bInterfaceClass = kIOUSBFindInterfaceDontCare;
+ request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare;
+ request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare;
+ request.bAlternateSetting = kIOUSBFindInterfaceDontCare;
+
+ kresult = (*(darwin_device))->CreateInterfaceIterator(darwin_device, &request, &interface_iterator);
+ if (kresult)
+ return kresult;
+
+ for ( current_interface = 0 ; current_interface <= ifc ; current_interface++ ) {
+ *usbInterfacep = IOIteratorNext(interface_iterator);
+ if (current_interface != ifc)
+ (void) IOObjectRelease (*usbInterfacep);
+ }
+
+ /* done with the interface iterator */
+ IOObjectRelease(interface_iterator);
+
+ return 0;
+}
+
+static int get_endpoints (struct libusb_device_handle *dev_handle, int iface) {
+ struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
+
+ /* current interface */
+ struct __darwin_interface *cInterface = &priv->interfaces[iface];
+
+ kern_return_t kresult;
+
+ u_int8_t numep, direction, number;
+ u_int8_t dont_care1, dont_care3;
+ u_int16_t dont_care2;
+ int i;
+
+ usbi_info (HANDLE_CTX (dev_handle), "building table of endpoints.");
+
+ /* retrieve the total number of endpoints on this interface */
+ kresult = (*(cInterface->interface))->GetNumEndpoints(cInterface->interface, &numep);
+ if (kresult) {
+ usbi_err (HANDLE_CTX (dev_handle), "can't get number of endpoints for interface: %s", darwin_error_str(kresult));
+ return darwin_to_libusb (kresult);
+ }
+
+ /* iterate through pipe references */
+ for (i = 1 ; i <= numep ; i++) {
+ kresult = (*(cInterface->interface))->GetPipeProperties(cInterface->interface, i, &direction, &number, &dont_care1,
+ &dont_care2, &dont_care3);
+
+ if (kresult != kIOReturnSuccess) {
+ usbi_err (HANDLE_CTX (dev_handle), "error getting pipe information for pipe %d: %s", i, darwin_error_str(kresult));
+
+ return darwin_to_libusb (kresult);
+ }
+
+ usbi_info (HANDLE_CTX (dev_handle), "interface: %i pipe %i: dir: %i number: %i", iface, i, direction, number);
+
+ cInterface->endpoint_addrs[i - 1] = ((direction << 7 & LIBUSB_ENDPOINT_DIR_MASK) | (number & LIBUSB_ENDPOINT_ADDRESS_MASK));
+ }
+
+ cInterface->num_endpoints = numep;
+
+ return 0;
+}
+
+static int darwin_claim_interface(struct libusb_device_handle *dev_handle, int iface) {
+ struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
+ struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
+ io_service_t usbInterface = IO_OBJECT_NULL;
+ IOReturn kresult;
+ IOCFPlugInInterface **plugInInterface = NULL;
+ SInt32 score;
+
+ /* current interface */
+ struct __darwin_interface *cInterface = &priv->interfaces[iface];
+
+ kresult = darwin_get_interface (dpriv->device, iface, &usbInterface);
+ if (kresult != kIOReturnSuccess)
+ return darwin_to_libusb (kresult);
+
+ /* make sure we have an interface */
+ if (!usbInterface && dpriv->first_config != 0) {
+ usbi_info (HANDLE_CTX (dev_handle), "no interface found; setting configuration: %d", dpriv->first_config);
+
+ /* set the configuration */
+ kresult = darwin_set_configuration (dev_handle, dpriv->first_config);
+ if (kresult != LIBUSB_SUCCESS) {
+ usbi_err (HANDLE_CTX (dev_handle), "could not set configuration");
+ return kresult;
+ }
+
+ kresult = darwin_get_interface (dpriv->device, iface, &usbInterface);
+ if (kresult) {
+ usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult));
+ return darwin_to_libusb (kresult);
+ }
+ }
+
+ if (!usbInterface) {
+ usbi_err (HANDLE_CTX (dev_handle), "interface not found");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ /* get an interface to the device's interface */
+ kresult = IOCreatePlugInInterfaceForService (usbInterface, kIOUSBInterfaceUserClientTypeID,
+ kIOCFPlugInInterfaceID, &plugInInterface, &score);
+ if (kresult) {
+ usbi_err (HANDLE_CTX (dev_handle), "IOCreatePlugInInterfaceForService: %s", darwin_error_str(kresult));
+ return darwin_to_libusb (kresult);
+ }
+
+ if (!plugInInterface) {
+ usbi_err (HANDLE_CTX (dev_handle), "plugin interface not found");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ /* ignore release error */
+ (void)IOObjectRelease (usbInterface);
+
+ /* Do the actual claim */
+ kresult = (*plugInInterface)->QueryInterface(plugInInterface,
+ CFUUIDGetUUIDBytes(kIOUSBInterfaceInterfaceID),
+ (LPVOID)&cInterface->interface);
+ if (kresult || !cInterface->interface) {
+ usbi_err (HANDLE_CTX (dev_handle), "QueryInterface: %s", darwin_error_str(kresult));
+ return darwin_to_libusb (kresult);
+ }
+
+ /* We no longer need the intermediate plug-in */
+ (*plugInInterface)->Release(plugInInterface);
+
+ /* claim the interface */
+ kresult = (*(cInterface->interface))->USBInterfaceOpen(cInterface->interface);
+ if (kresult) {
+ usbi_err (HANDLE_CTX (dev_handle), "USBInterfaceOpen: %s", darwin_error_str(kresult));
+ return darwin_to_libusb (kresult);
+ }
+
+ /* update list of endpoints */
+ kresult = get_endpoints (dev_handle, iface);
+ if (kresult) {
+ /* this should not happen */
+ darwin_release_interface (dev_handle, iface);
+ usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table");
+ return kresult;
+ }
+
+ cInterface->cfSource = NULL;
+
+ /* create async event source */
+ kresult = (*(cInterface->interface))->CreateInterfaceAsyncEventSource (cInterface->interface, &cInterface->cfSource);
+ if (kresult != kIOReturnSuccess) {
+ usbi_err (HANDLE_CTX (dev_handle), "could not create async event source");
+
+ /* can't continue without an async event source */
+ (void)darwin_release_interface (dev_handle, iface);
+
+ return darwin_to_libusb (kresult);
+ }
+
+ /* add the cfSource to the async thread's run loop */
+ CFRunLoopAddSource(libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode);
+
+ usbi_info (HANDLE_CTX (dev_handle), "interface opened");
+
+ return 0;
+}
+
+static int darwin_release_interface(struct libusb_device_handle *dev_handle, int iface) {
+ struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
+ IOReturn kresult;
+
+ /* current interface */
+ struct __darwin_interface *cInterface = &priv->interfaces[iface];
+
+ /* Check to see if an interface is open */
+ if (!cInterface->interface)
+ return LIBUSB_SUCCESS;
+
+ /* clean up endpoint data */
+ cInterface->num_endpoints = 0;
+
+ /* delete the interface's async event source */
+ if (cInterface->cfSource) {
+ CFRunLoopRemoveSource (libusb_darwin_acfl, cInterface->cfSource, kCFRunLoopDefaultMode);
+ CFRelease (cInterface->cfSource);
+ }
+
+ kresult = (*(cInterface->interface))->USBInterfaceClose(cInterface->interface);
+ if (kresult)
+ usbi_err (HANDLE_CTX (dev_handle), "USBInterfaceClose: %s", darwin_error_str(kresult));
+
+ kresult = (*(cInterface->interface))->Release(cInterface->interface);
+ if (kresult != kIOReturnSuccess)
+ usbi_err (HANDLE_CTX (dev_handle), "Release: %s", darwin_error_str(kresult));
+
+ cInterface->interface = IO_OBJECT_NULL;
+
+ return darwin_to_libusb (kresult);
+}
+
+static int darwin_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) {
+ struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
+ IOReturn kresult;
+
+ /* current interface */
+ struct __darwin_interface *cInterface = &priv->interfaces[iface];
+
+ if (!cInterface->interface)
+ return LIBUSB_ERROR_NO_DEVICE;
+
+ kresult = (*(cInterface->interface))->SetAlternateInterface (cInterface->interface, altsetting);
+ if (kresult != kIOReturnSuccess)
+ darwin_reset_device (dev_handle);
+
+ /* update list of endpoints */
+ kresult = get_endpoints (dev_handle, iface);
+ if (kresult) {
+ /* this should not happen */
+ darwin_release_interface (dev_handle, iface);
+ usbi_err (HANDLE_CTX (dev_handle), "could not build endpoint table");
+ return kresult;
+ }
+
+ return darwin_to_libusb (kresult);
+}
+
+static int darwin_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) {
+ struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)dev_handle->os_priv;
+
+ /* current interface */
+ struct __darwin_interface *cInterface;
+ uint8_t pipeRef, iface;
+ IOReturn kresult;
+
+ /* determine the interface/endpoint to use */
+ if (ep_to_pipeRef (dev_handle, endpoint, &pipeRef, &iface) != 0) {
+ usbi_err (HANDLE_CTX (dev_handle), "endpoint not found on any open interface");
+
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ cInterface = &priv->interfaces[iface];
+
+#if (InterfaceVersion < 190)
+ kresult = (*(cInterface->interface))->ClearPipeStall(cInterface->interface, pipeRef);
+#else
+ /* newer versions of darwin support clearing additional bits on the device's endpoint */
+ kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef);
+#endif
+ if (kresult)
+ usbi_err (HANDLE_CTX (dev_handle), "ClearPipeStall: %s", darwin_error_str (kresult));
+
+ return darwin_to_libusb (kresult);
+}
+
+static int darwin_reset_device(struct libusb_device_handle *dev_handle) {
+ struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
+ IOReturn kresult;
+
+ kresult = (*(dpriv->device))->ResetDevice (dpriv->device);
+ if (kresult)
+ usbi_err (HANDLE_CTX (dev_handle), "ResetDevice: %s", darwin_error_str (kresult));
+
+ return darwin_to_libusb (kresult);
+}
+
+static int darwin_kernel_driver_active(struct libusb_device_handle *dev_handle, int interface) {
+ struct darwin_device_priv *dpriv = (struct darwin_device_priv *)dev_handle->dev->os_priv;
+ io_service_t usbInterface;
+ CFTypeRef driver;
+ IOReturn kresult;
+
+ kresult = darwin_get_interface (dpriv->device, interface, &usbInterface);
+ if (kresult) {
+ usbi_err (HANDLE_CTX (dev_handle), "darwin_get_interface: %s", darwin_error_str(kresult));
+
+ return darwin_to_libusb (kresult);
+ }
+
+ driver = IORegistryEntryCreateCFProperty (usbInterface, kIOBundleIdentifierKey, kCFAllocatorDefault, 0);
+ IOObjectRelease (usbInterface);
+
+ if (driver) {
+ CFRelease (driver);
+
+ return 1;
+ }
+
+ /* no driver */
+ return 0;
+}
+
+/* attaching/detaching kernel drivers is not currently supported (maybe in the future?) */
+static int darwin_attach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) {
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int darwin_detach_kernel_driver (struct libusb_device_handle *dev_handle, int interface) {
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static void darwin_destroy_device(struct libusb_device *dev) {
+}
+
+static int submit_bulk_transfer(struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
+
+ IOReturn ret;
+ uint8_t is_read; /* 0 = we're reading, 1 = we're writing */
+ uint8_t transferType;
+ /* None of the values below are used in libusb for bulk transfers */
+ uint8_t direction, number, interval, pipeRef, iface;
+ uint16_t maxPacketSize;
+
+ struct __darwin_interface *cInterface;
+
+ /* are we reading or writing? */
+ is_read = transfer->endpoint & LIBUSB_ENDPOINT_IN;
+
+ if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) {
+ usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
+
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ cInterface = &priv->interfaces[iface];
+
+ (*(cInterface->interface))->GetPipeProperties (cInterface->interface, pipeRef, &direction, &number,
+ &transferType, &maxPacketSize, &interval);
+
+ /* submit the request */
+ /* timeouts are unavailable on interrupt endpoints */
+ if (transferType == kUSBInterrupt) {
+ if (is_read)
+ ret = (*(cInterface->interface))->ReadPipeAsync(cInterface->interface, pipeRef, transfer->buffer,
+ transfer->length, darwin_async_io_callback, itransfer);
+ else
+ ret = (*(cInterface->interface))->WritePipeAsync(cInterface->interface, pipeRef, transfer->buffer,
+ transfer->length, darwin_async_io_callback, itransfer);
+ } else {
+ if (is_read)
+ ret = (*(cInterface->interface))->ReadPipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer,
+ transfer->length, transfer->timeout, transfer->timeout,
+ darwin_async_io_callback, (void *)itransfer);
+ else
+ ret = (*(cInterface->interface))->WritePipeAsyncTO(cInterface->interface, pipeRef, transfer->buffer,
+ transfer->length, transfer->timeout, transfer->timeout,
+ darwin_async_io_callback, (void *)itransfer);
+ }
+
+ if (ret)
+ usbi_err (TRANSFER_CTX (transfer), "bulk transfer failed (dir = %s): %s (code = 0x%08x)", is_read ? "In" : "Out",
+ darwin_error_str(ret), ret);
+
+ return darwin_to_libusb (ret);
+}
+
+static int submit_iso_transfer(struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+ struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
+
+ IOReturn kresult;
+ uint8_t is_read; /* 0 = we're writing, 1 = we're reading */
+ uint8_t pipeRef, iface;
+ UInt64 frame;
+ AbsoluteTime atTime;
+ int i;
+
+ struct __darwin_interface *cInterface;
+
+ /* are we reading or writing? */
+ is_read = transfer->endpoint & LIBUSB_ENDPOINT_IN;
+
+ /* construct an array of IOUSBIsocFrames */
+ tpriv->isoc_framelist = (IOUSBIsocFrame*) calloc (transfer->num_iso_packets, sizeof(IOUSBIsocFrame));
+ if (!tpriv->isoc_framelist)
+ return LIBUSB_ERROR_NO_MEM;
+
+ /* copy the frame list from the libusb descriptor (the structures differ only is member order) */
+ for (i = 0 ; i < transfer->num_iso_packets ; i++)
+ tpriv->isoc_framelist[i].frReqCount = transfer->iso_packet_desc[i].length;
+
+ /* determine the interface/endpoint to use */
+ if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) {
+ usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
+
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ cInterface = &priv->interfaces[iface];
+
+ /* Last but not least we need the bus frame number */
+ kresult = (*(cInterface->interface))->GetBusFrameNumber(cInterface->interface, &frame, &atTime);
+ if (kresult) {
+ usbi_err (TRANSFER_CTX (transfer), "failed to get bus frame number: %d", kresult);
+ free(tpriv->isoc_framelist);
+ tpriv->isoc_framelist = NULL;
+
+ return darwin_to_libusb (kresult);
+ }
+
+ /* schedule for a frame a little in the future */
+ frame += 2;
+
+ /* submit the request */
+ if (is_read)
+ kresult = (*(cInterface->interface))->ReadIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame,
+ transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback,
+ itransfer);
+ else
+ kresult = (*(cInterface->interface))->WriteIsochPipeAsync(cInterface->interface, pipeRef, transfer->buffer, frame,
+ transfer->num_iso_packets, tpriv->isoc_framelist, darwin_async_io_callback,
+ itransfer);
+
+ if (kresult != kIOReturnSuccess) {
+ usbi_err (TRANSFER_CTX (transfer), "isochronous transfer failed (dir: %s): %s", is_read ? "In" : "Out",
+ darwin_error_str(kresult));
+ free (tpriv->isoc_framelist);
+ tpriv->isoc_framelist = NULL;
+ }
+
+ return darwin_to_libusb (kresult);
+}
+
+static int submit_control_transfer(struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_control_setup *setup = (struct libusb_control_setup *) transfer->buffer;
+ struct darwin_device_priv *dpriv = (struct darwin_device_priv *)transfer->dev_handle->dev->os_priv;
+ struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+
+ IOReturn kresult;
+
+ bzero(&tpriv->req, sizeof(tpriv->req));
+
+ /* IOUSBDeviceInterface expects the request in cpu endianess */
+ tpriv->req.bmRequestType = setup->bmRequestType;
+ tpriv->req.bRequest = setup->bRequest;
+ /* these values should be in bus order from libusb_fill_control_setup */
+ tpriv->req.wValue = OSSwapLittleToHostInt16 (setup->wValue);
+ tpriv->req.wIndex = OSSwapLittleToHostInt16 (setup->wIndex);
+ tpriv->req.wLength = OSSwapLittleToHostInt16 (setup->wLength);
+ /* data is stored after the libusb control block */
+ tpriv->req.pData = transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE;
+ tpriv->req.completionTimeout = transfer->timeout;
+ tpriv->req.noDataTimeout = transfer->timeout;
+
+ /* all transfers in libusb-1.0 are async */
+ kresult = (*(dpriv->device))->DeviceRequestAsyncTO(dpriv->device, &(tpriv->req), darwin_async_io_callback, itransfer);
+
+ if (kresult != kIOReturnSuccess)
+ usbi_err (TRANSFER_CTX (transfer), "control request failed: %s", darwin_error_str(kresult));
+
+ return darwin_to_libusb (kresult);
+}
+
+static int darwin_submit_transfer(struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+
+ switch (transfer->type) {
+ case LIBUSB_TRANSFER_TYPE_CONTROL:
+ return submit_control_transfer(itransfer);
+ case LIBUSB_TRANSFER_TYPE_BULK:
+ case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+ return submit_bulk_transfer(itransfer);
+ case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+ return submit_iso_transfer(itransfer);
+ default:
+ usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+}
+
+static int cancel_control_transfer(struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct darwin_device_priv *dpriv = (struct darwin_device_priv *)transfer->dev_handle->dev->os_priv;
+ IOReturn kresult;
+
+ usbi_info (ITRANSFER_CTX (itransfer), "WARNING: aborting all transactions control pipe");
+
+ kresult = (*(dpriv->device))->USBDeviceAbortPipeZero (dpriv->device);
+
+ return darwin_to_libusb (kresult);
+}
+
+static int darwin_abort_transfers (struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
+ struct __darwin_interface *cInterface;
+ uint8_t pipeRef, iface;
+ IOReturn kresult;
+
+ if (ep_to_pipeRef (transfer->dev_handle, transfer->endpoint, &pipeRef, &iface) != 0) {
+ usbi_err (TRANSFER_CTX (transfer), "endpoint not found on any open interface");
+
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ cInterface = &priv->interfaces[iface];
+
+ usbi_info (ITRANSFER_CTX (itransfer), "WARNING: aborting all transactions on interface %d pipe %d", iface, pipeRef);
+
+ /* abort transactions */
+ (*(cInterface->interface))->AbortPipe (cInterface->interface, pipeRef);
+
+ usbi_info (ITRANSFER_CTX (itransfer), "calling clear pipe stall to clear the data toggle bit");
+
+ /* clear the data toggle bit */
+#if (InterfaceVersion < 190)
+ kresult = (*(cInterface->interface))->ClearPipeStall(cInterface->interface, pipeRef);
+#else
+ /* newer versions of darwin support clearing additional bits on the device's endpoint */
+ kresult = (*(cInterface->interface))->ClearPipeStallBothEnds(cInterface->interface, pipeRef);
+#endif
+
+ return darwin_to_libusb (kresult);
+}
+
+static int darwin_cancel_transfer(struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+
+ switch (transfer->type) {
+ case LIBUSB_TRANSFER_TYPE_CONTROL:
+ return cancel_control_transfer(itransfer);
+ case LIBUSB_TRANSFER_TYPE_BULK:
+ case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+ case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+ return darwin_abort_transfers (itransfer);
+ default:
+ usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+}
+
+static void darwin_clear_transfer_priv (struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+
+ if (transfer->type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS && tpriv->isoc_framelist) {
+ free (tpriv->isoc_framelist);
+ tpriv->isoc_framelist = NULL;
+ }
+}
+
+static void darwin_async_io_callback (void *refcon, IOReturn result, void *arg0) {
+ struct usbi_transfer *itransfer = (struct usbi_transfer *)refcon;
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct darwin_device_handle_priv *priv = (struct darwin_device_handle_priv *)transfer->dev_handle->os_priv;
+ UInt32 message;
+
+ usbi_info (ITRANSFER_CTX (itransfer), "an async io operation has completed");
+
+ /* send a completion message to the device's file descriptor */
+ message = MESSAGE_ASYNC_IO_COMPLETE;
+ write (priv->fds[1], &message, sizeof (message));
+ write (priv->fds[1], &itransfer, sizeof (itransfer));
+ write (priv->fds[1], &result, sizeof (IOReturn));
+ write (priv->fds[1], &arg0, sizeof (UInt32));
+}
+
+static int darwin_transfer_status (struct usbi_transfer *itransfer, kern_return_t result) {
+ switch (result) {
+ case kIOReturnUnderrun:
+ case kIOReturnSuccess:
+ return LIBUSB_TRANSFER_COMPLETED;
+ case kIOReturnAborted:
+ return LIBUSB_TRANSFER_CANCELLED;
+ case kIOUSBPipeStalled:
+ usbi_warn (ITRANSFER_CTX (itransfer), "transfer error: pipe is stalled");
+ return LIBUSB_TRANSFER_STALL;
+ case kIOReturnOverrun:
+ usbi_err (ITRANSFER_CTX (itransfer), "transfer error: data overrun");
+ return LIBUSB_TRANSFER_OVERFLOW;
+ case kIOUSBTransactionTimeout:
+ usbi_err (ITRANSFER_CTX (itransfer), "transfer error: timed out");
+ return LIBUSB_TRANSFER_TIMED_OUT;
+ default:
+ usbi_err (ITRANSFER_CTX (itransfer), "transfer error: %s (value = 0x%08x)", darwin_error_str (result), result);
+ return LIBUSB_TRANSFER_ERROR;
+ }
+}
+
+static void darwin_handle_callback (struct usbi_transfer *itransfer, kern_return_t result, UInt32 io_size) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct darwin_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+ int isIsoc = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS == transfer->type;
+ int isBulk = LIBUSB_TRANSFER_TYPE_BULK == transfer->type;
+ int isControl = LIBUSB_TRANSFER_TYPE_CONTROL == transfer->type;
+ int isInterrupt = LIBUSB_TRANSFER_TYPE_INTERRUPT == transfer->type;
+ int i;
+
+ if (!isIsoc && !isBulk && !isControl && !isInterrupt) {
+ usbi_err (TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
+ return;
+ }
+
+ usbi_info (ITRANSFER_CTX (itransfer), "handling %s completion with kernel status %d",
+ isControl ? "control" : isBulk ? "bulk" : isIsoc ? "isoc" : "interrupt", result);
+
+ if (kIOReturnSuccess == result || kIOReturnUnderrun == result) {
+ if (isIsoc && tpriv->isoc_framelist) {
+ /* copy isochronous results back */
+
+ for (i = 0; i < transfer->num_iso_packets ; i++) {
+ struct libusb_iso_packet_descriptor *lib_desc = &transfer->iso_packet_desc[i];
+ lib_desc->status = darwin_to_libusb (tpriv->isoc_framelist[i].frStatus);
+ lib_desc->actual_length = tpriv->isoc_framelist[i].frActCount;
+ }
+ } else if (!isIsoc)
+ itransfer->transferred += io_size;
+ }
+
+ /* it is ok to handle cancelled transfers without calling usbi_handle_transfer_cancellation (we catch timeout transfers) */
+ usbi_handle_transfer_completion (itransfer, darwin_transfer_status (itransfer, result));
+}
+
+static int op_handle_events(struct libusb_context *ctx, struct pollfd *fds, nfds_t nfds, int num_ready) {
+ struct usbi_transfer *itransfer;
+ UInt32 io_size;
+ IOReturn kresult;
+ int i = 0, ret;
+ UInt32 message;
+
+ usbi_mutex_lock(&ctx->open_devs_lock);
+ for (i = 0; i < nfds && num_ready > 0; i++) {
+ struct pollfd *pollfd = &fds[i];
+ struct libusb_device_handle *handle;
+ struct darwin_device_handle_priv *hpriv = NULL;
+
+ usbi_info (ctx, "checking fd %i with revents = %x", fds[i], pollfd->revents);
+
+ if (!pollfd->revents)
+ continue;
+
+ num_ready--;
+ list_for_each_entry(handle, &ctx->open_devs, list, struct libusb_device_handle) {
+ hpriv = (struct darwin_device_handle_priv *)handle->os_priv;
+ if (hpriv->fds[0] == pollfd->fd)
+ break;
+ }
+
+ if (!(pollfd->revents & POLLERR)) {
+ ret = read (hpriv->fds[0], &message, sizeof (message));
+ if (ret < sizeof (message))
+ continue;
+ } else
+ /* could not poll the device-- response is to delete the device (this seems a little heavy-handed) */
+ message = MESSAGE_DEVICE_GONE;
+
+ switch (message) {
+ case MESSAGE_DEVICE_GONE:
+ /* remove the device's async port from the runloop */
+ if (hpriv->cfSource) {
+ if (libusb_darwin_acfl)
+ CFRunLoopRemoveSource (libusb_darwin_acfl, hpriv->cfSource, kCFRunLoopDefaultMode);
+ CFRelease (hpriv->cfSource);
+ hpriv->cfSource = NULL;
+ }
+
+ usbi_remove_pollfd(HANDLE_CTX(handle), hpriv->fds[0]);
+ usbi_handle_disconnect(handle);
+
+ /* done with this device */
+ continue;
+ case MESSAGE_ASYNC_IO_COMPLETE:
+ read (hpriv->fds[0], &itransfer, sizeof (itransfer));
+ read (hpriv->fds[0], &kresult, sizeof (IOReturn));
+ read (hpriv->fds[0], &io_size, sizeof (UInt32));
+
+ darwin_handle_callback (itransfer, kresult, io_size);
+ break;
+ default:
+ usbi_err (ctx, "unknown message received from device pipe");
+ }
+ }
+
+ usbi_mutex_unlock(&ctx->open_devs_lock);
+
+ return 0;
+}
+
+static int darwin_clock_gettime(int clk_id, struct timespec *tp) {
+ mach_timespec_t sys_time;
+ clock_serv_t clock_ref;
+
+ switch (clk_id) {
+ case USBI_CLOCK_REALTIME:
+ /* CLOCK_REALTIME represents time since the epoch */
+ host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &clock_ref);
+ break;
+ case USBI_CLOCK_MONOTONIC:
+ /* use system boot time as reference for the monotonic clock */
+ host_get_clock_service(mach_host_self(), SYSTEM_CLOCK, &clock_ref);
+ break;
+ default:
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ clock_get_time (clock_ref, &sys_time);
+
+ tp->tv_sec = sys_time.tv_sec;
+ tp->tv_nsec = sys_time.tv_nsec;
+
+ return 0;
+}
+
+const struct usbi_os_backend darwin_backend = {
+ .name = "Darwin",
+ .init = darwin_init,
+ .exit = darwin_exit,
+ .get_device_list = darwin_get_device_list,
+ .get_device_descriptor = darwin_get_device_descriptor,
+ .get_active_config_descriptor = darwin_get_active_config_descriptor,
+ .get_config_descriptor = darwin_get_config_descriptor,
+
+ .open = darwin_open,
+ .close = darwin_close,
+ .get_configuration = darwin_get_configuration,
+ .set_configuration = darwin_set_configuration,
+ .claim_interface = darwin_claim_interface,
+ .release_interface = darwin_release_interface,
+
+ .set_interface_altsetting = darwin_set_interface_altsetting,
+ .clear_halt = darwin_clear_halt,
+ .reset_device = darwin_reset_device,
+
+ .kernel_driver_active = darwin_kernel_driver_active,
+ .detach_kernel_driver = darwin_detach_kernel_driver,
+ .attach_kernel_driver = darwin_attach_kernel_driver,
+
+ .destroy_device = darwin_destroy_device,
+
+ .submit_transfer = darwin_submit_transfer,
+ .cancel_transfer = darwin_cancel_transfer,
+ .clear_transfer_priv = darwin_clear_transfer_priv,
+
+ .handle_events = op_handle_events,
+
+ .clock_gettime = darwin_clock_gettime,
+
+ .device_priv_size = sizeof(struct darwin_device_priv),
+ .device_handle_priv_size = sizeof(struct darwin_device_handle_priv),
+ .transfer_priv_size = sizeof(struct darwin_transfer_priv),
+ .add_iso_packet_size = 0,
+};
+
diff --git a/libusb-1.0/libusb/os/darwin_usb.h b/libusb-1.0/libusb/os/darwin_usb.h
new file mode 100644
index 0000000..a71d464
--- /dev/null
+++ b/libusb-1.0/libusb/os/darwin_usb.h
@@ -0,0 +1,167 @@
+/*
+ * darwin backend for libusb 1.0
+ * Copyright (C) 2008-2009 Nathan Hjelm <hjelmn@users.sourceforge.net>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#if !defined(LIBUSB_DARWIN_H)
+#define LIBUSB_DARWIN_H
+
+#include "libusbi.h"
+
+#include <IOKit/IOTypes.h>
+#include <IOKit/IOCFBundle.h>
+#include <IOKit/usb/IOUSBLib.h>
+#include <IOKit/IOCFPlugIn.h>
+
+/* IOUSBInterfaceInferface */
+#if defined (kIOUSBInterfaceInterfaceID300)
+
+#define usb_interface_t IOUSBInterfaceInterface300
+#define InterfaceInterfaceID kIOUSBInterfaceInterfaceID300
+#define InterfaceVersion 300
+
+#elif defined (kIOUSBInterfaceInterfaceID245)
+
+#define usb_interface_t IOUSBInterfaceInterface245
+#define InterfaceInterfaceID kIOUSBInterfaceInterfaceID245
+#define InterfaceVersion 245
+
+#elif defined (kIOUSBInterfaceInterfaceID220)
+
+#define usb_interface_t IOUSBInterfaceInterface220
+#define InterfaceInterfaceID kIOUSBInterfaceInterfaceID220
+#define InterfaceVersion 220
+
+#elif defined (kIOUSBInterfaceInterfaceID197)
+
+#define usb_interface_t IOUSBInterfaceInterface197
+#define InterfaceInterfaceID kIOUSBInterfaceInterfaceID197
+#define InterfaceVersion 197
+
+#elif defined (kIOUSBInterfaceInterfaceID190)
+
+#define usb_interface_t IOUSBInterfaceInterface190
+#define InterfaceInterfaceID kIOUSBInterfaceInterfaceID190
+#define InterfaceVersion 190
+
+#elif defined (kIOUSBInterfaceInterfaceID182)
+
+#define usb_interface_t IOUSBInterfaceInterface182
+#define InterfaceInterfaceID kIOUSBInterfaceInterfaceID182
+#define InterfaceVersion 182
+
+#else
+
+#error "IOUSBFamily is too old. Please upgrade your OS"
+
+#endif
+
+/* IOUSBDeviceInterface */
+#if defined (kIOUSBDeviceInterfaceID320)
+
+#define usb_device_t IOUSBDeviceInterface320
+#define DeviceInterfaceID kIOUSBDeviceInterfaceID320
+#define DeviceVersion 320
+
+#elif defined (kIOUSBDeviceInterfaceID300)
+
+#define usb_device_t IOUSBDeviceInterface300
+#define DeviceInterfaceID kIOUSBDeviceInterfaceID300
+#define DeviceVersion 300
+
+#elif defined (kIOUSBDeviceInterfaceID245)
+
+#define usb_device_t IOUSBDeviceInterface245
+#define DeviceInterfaceID kIOUSBDeviceInterfaceID245
+#define DeviceVersion 245
+
+#elif defined (kIOUSBDeviceInterfaceID197)
+
+#define usb_device_t IOUSBDeviceInterface197
+#define DeviceInterfaceID kIOUSBDeviceInterfaceID197
+#define DeviceVersion 197
+
+#elif defined (kIOUSBDeviceInterfaceID187)
+
+#define usb_device_t IOUSBDeviceInterface187
+#define DeviceInterfaceID kIOUSBDeviceInterfaceID187
+#define DeviceVersion 187
+
+#elif defined (kIOUSBDeviceInterfaceID182)
+
+#define usb_device_t IOUSBDeviceInterface182
+#define DeviceInterfaceID kIOUSBDeviceInterfaceID182
+#define DeviceVersion 182
+
+#else
+
+#error "IOUSBFamily is too old. Please upgrade your OS"
+
+#endif
+
+#if !defined(IO_OBJECT_NULL)
+#define IO_OBJECT_NULL ((io_object_t) 0)
+#endif
+
+typedef IOCFPlugInInterface *io_cf_plugin_ref_t;
+typedef IONotificationPortRef io_notification_port_t;
+
+/* private structures */
+struct darwin_device_priv {
+ IOUSBDeviceDescriptor dev_descriptor;
+ UInt32 location;
+ char sys_path[21];
+ usb_device_t **device;
+ int open_count;
+ UInt8 first_config, active_config;
+};
+
+struct darwin_device_handle_priv {
+ int is_open;
+ CFRunLoopSourceRef cfSource;
+ int fds[2];
+
+ struct __darwin_interface {
+ usb_interface_t **interface;
+ uint8_t num_endpoints;
+ CFRunLoopSourceRef cfSource;
+ uint8_t endpoint_addrs[USB_MAXENDPOINTS];
+ } interfaces[USB_MAXINTERFACES];
+};
+
+struct darwin_transfer_priv {
+ /* Isoc */
+ IOUSBIsocFrame *isoc_framelist;
+
+ /* Control */
+#if !defined (LIBUSB_NO_TIMEOUT_DEVICE)
+ IOUSBDevRequestTO req;
+#else
+ IOUSBDevRequest req;
+#endif
+
+ /* Bulk */
+};
+
+enum {
+ MESSAGE_DEVICE_GONE,
+ MESSAGE_ASYNC_IO_COMPLETE
+};
+
+
+
+#endif
diff --git a/libusb-1.0/libusb/os/linux_usbfs.c b/libusb-1.0/libusb/os/linux_usbfs.c
new file mode 100644
index 0000000..5c2a6e8
--- /dev/null
+++ b/libusb-1.0/libusb/os/linux_usbfs.c
@@ -0,0 +1,2220 @@
+/*
+ * Linux usbfs backend for libusb
+ * Copyright (C) 2007-2009 Daniel Drake <dsd@gentoo.org>
+ * Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <config.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <poll.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/utsname.h>
+#include <unistd.h>
+
+#include "libusb.h"
+#include "libusbi.h"
+#include "linux_usbfs.h"
+
+/* sysfs vs usbfs:
+ * opening a usbfs node causes the device to be resumed, so we attempt to
+ * avoid this during enumeration.
+ *
+ * sysfs allows us to read the kernel's in-memory copies of device descriptors
+ * and so forth, avoiding the need to open the device:
+ * - The binary "descriptors" file was added in 2.6.23.
+ * - The "busnum" file was added in 2.6.22
+ * - The "devnum" file has been present since pre-2.6.18
+ * - the "bConfigurationValue" file has been present since pre-2.6.18
+ *
+ * If we have bConfigurationValue, busnum, and devnum, then we can determine
+ * the active configuration without having to open the usbfs node in RDWR mode.
+ * We assume this is the case if we see the busnum file (indicates 2.6.22+).
+ * The busnum file is important as that is the only way we can relate sysfs
+ * devices to usbfs nodes.
+ *
+ * If we also have descriptors, we can obtain the device descriptor and active
+ * configuration without touching usbfs at all.
+ *
+ * The descriptors file originally only contained the active configuration
+ * descriptor alongside the device descriptor, but all configurations are
+ * included as of Linux 2.6.26.
+ */
+
+/* endianness for multi-byte fields:
+ *
+ * Descriptors exposed by usbfs have the multi-byte fields in the device
+ * descriptor as host endian. Multi-byte fields in the other descriptors are
+ * bus-endian. The kernel documentation says otherwise, but it is wrong.
+ */
+
+static const char *usbfs_path = NULL;
+
+/* Linux 2.6.32 adds support for a bulk continuation URB flag. this basically
+ * allows us to mark URBs as being part of a specific logical transfer when
+ * we submit them to the kernel. then, on any error error except a
+ * cancellation, all URBs within that transfer will be cancelled with the
+ * endpoint is disabled, meaning that no more data can creep in during the
+ * time it takes to cancel the remaining URBs.
+ *
+ * The BULK_CONTINUATION flag must be set on all URBs within a bulk transfer
+ * (in either direction) except the first.
+ * For IN transfers, we must also set SHORT_NOT_OK on all the URBs.
+ * For OUT transfers, SHORT_NOT_OK must not be set. The effective behaviour
+ * (where an OUT transfer does not complete, the rest of the URBs in the
+ * transfer get cancelled) is already in effect, and setting this flag is
+ * disallowed (a kernel with USB debugging enabled will reject such URBs).
+ */
+static int supports_flag_bulk_continuation = -1;
+
+/* clock ID for monotonic clock, as not all clock sources are available on all
+ * systems. appropriate choice made at initialization time. */
+static clockid_t monotonic_clkid = -1;
+
+/* do we have a busnum to relate devices? this also implies that we can read
+ * the active configuration through bConfigurationValue */
+static int sysfs_can_relate_devices = -1;
+
+/* do we have a descriptors file? */
+static int sysfs_has_descriptors = -1;
+
+struct linux_device_priv {
+ char *sysfs_dir;
+ unsigned char *dev_descriptor;
+ unsigned char *config_descriptor;
+};
+
+struct linux_device_handle_priv {
+ int fd;
+};
+
+enum reap_action {
+ NORMAL = 0,
+ /* submission failed after the first URB, so await cancellation/completion
+ * of all the others */
+ SUBMIT_FAILED,
+
+ /* cancelled by user or timeout */
+ CANCELLED,
+
+ /* completed multi-URB transfer in non-final URB */
+ COMPLETED_EARLY,
+
+ /* one or more urbs encountered a low-level error */
+ ERROR,
+};
+
+struct linux_transfer_priv {
+ union {
+ struct usbfs_urb *urbs;
+ struct usbfs_urb **iso_urbs;
+ };
+
+ enum reap_action reap_action;
+ int num_urbs;
+ unsigned int num_retired;
+ enum libusb_transfer_status reap_status;
+
+ /* next iso packet in user-supplied transfer to be populated */
+ int iso_packet_offset;
+};
+
+static void __get_usbfs_path(struct libusb_device *dev, char *path)
+{
+ snprintf(path, PATH_MAX, "%s/%03d/%03d", usbfs_path, dev->bus_number,
+ dev->device_address);
+}
+
+static struct linux_device_priv *__device_priv(struct libusb_device *dev)
+{
+ return (struct linux_device_priv *) dev->os_priv;
+}
+
+static struct linux_device_handle_priv *__device_handle_priv(
+ struct libusb_device_handle *handle)
+{
+ return (struct linux_device_handle_priv *) handle->os_priv;
+}
+
+static int check_usb_vfs(const char *dirname)
+{
+ DIR *dir;
+ struct dirent *entry;
+ int found = 0;
+
+ dir = opendir(dirname);
+ if (!dir)
+ return 0;
+
+ while ((entry = readdir(dir)) != NULL) {
+ if (entry->d_name[0] == '.')
+ continue;
+
+ /* We assume if we find any files that it must be the right place */
+ found = 1;
+ break;
+ }
+
+ closedir(dir);
+ return found;
+}
+
+static const char *find_usbfs_path(void)
+{
+ const char *path = "/dev/bus/usb";
+ const char *ret = NULL;
+
+ if (check_usb_vfs(path)) {
+ ret = path;
+ } else {
+ path = "/proc/bus/usb";
+ if (check_usb_vfs(path))
+ ret = path;
+ }
+
+ usbi_dbg("found usbfs at %s", ret);
+ return ret;
+}
+
+/* the monotonic clock is not usable on all systems (e.g. embedded ones often
+ * seem to lack it). fall back to REALTIME if we have to. */
+static clockid_t find_monotonic_clock(void)
+{
+ struct timespec ts;
+ int r;
+
+#ifdef CLOCK_MONOTONIC
+ /* Linux 2.6.28 adds CLOCK_MONOTONIC_RAW but we don't use it
+ * because it's not available through timerfd */
+ r = clock_gettime(CLOCK_MONOTONIC, &ts);
+ if (r == 0)
+ return CLOCK_MONOTONIC;
+ usbi_dbg("monotonic clock doesn't work, errno %d", errno);
+#endif
+
+ return CLOCK_REALTIME;
+}
+
+/* bulk continuation URB flag available from Linux 2.6.32 */
+static int check_flag_bulk_continuation(void)
+{
+ struct utsname uts;
+ int sublevel;
+
+ if (uname(&uts) < 0)
+ return -1;
+ if (strlen(uts.release) < 4)
+ return 0;
+ if (strncmp(uts.release, "2.6.", 4) != 0)
+ return 0;
+
+ sublevel = atoi(uts.release + 4);
+ return sublevel >= 32;
+}
+
+static int op_init(struct libusb_context *ctx)
+{
+ struct stat statbuf;
+ int r;
+
+ usbfs_path = find_usbfs_path();
+ if (!usbfs_path) {
+ usbi_err(ctx, "could not find usbfs");
+ return LIBUSB_ERROR_OTHER;
+ }
+
+ if (monotonic_clkid == -1)
+ monotonic_clkid = find_monotonic_clock();
+
+ if (supports_flag_bulk_continuation == -1) {
+ supports_flag_bulk_continuation = check_flag_bulk_continuation();
+ if (supports_flag_bulk_continuation == -1) {
+ usbi_err(ctx, "error checking for bulk continuation support");
+ return LIBUSB_ERROR_OTHER;
+ }
+ }
+
+ if (supports_flag_bulk_continuation)
+ usbi_dbg("bulk continuation flag supported");
+
+ r = stat(SYSFS_DEVICE_PATH, &statbuf);
+ if (r == 0 && S_ISDIR(statbuf.st_mode)) {
+ usbi_dbg("found usb devices in sysfs");
+ } else {
+ usbi_dbg("sysfs usb info not available");
+ sysfs_has_descriptors = 0;
+ sysfs_can_relate_devices = 0;
+ }
+
+ return 0;
+}
+
+static int usbfs_get_device_descriptor(struct libusb_device *dev,
+ unsigned char *buffer)
+{
+ struct linux_device_priv *priv = __device_priv(dev);
+
+ /* return cached copy */
+ memcpy(buffer, priv->dev_descriptor, DEVICE_DESC_LENGTH);
+ return 0;
+}
+
+static int __open_sysfs_attr(struct libusb_device *dev, const char *attr)
+{
+ struct linux_device_priv *priv = __device_priv(dev);
+ char filename[PATH_MAX];
+ int fd;
+
+ snprintf(filename, PATH_MAX, "%s/%s/%s",
+ SYSFS_DEVICE_PATH, priv->sysfs_dir, attr);
+ fd = open(filename, O_RDONLY);
+ if (fd < 0) {
+ usbi_err(DEVICE_CTX(dev),
+ "open %s failed ret=%d errno=%d", filename, fd, errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ return fd;
+}
+
+static int sysfs_get_device_descriptor(struct libusb_device *dev,
+ unsigned char *buffer)
+{
+ int fd;
+ ssize_t r;
+
+ /* sysfs provides access to an in-memory copy of the device descriptor,
+ * so we use that rather than keeping our own copy */
+
+ fd = __open_sysfs_attr(dev, "descriptors");
+ if (fd < 0)
+ return fd;
+
+ r = read(fd, buffer, DEVICE_DESC_LENGTH);;
+ close(fd);
+ if (r < 0) {
+ usbi_err(DEVICE_CTX(dev), "read failed, ret=%d errno=%d", fd, errno);
+ return LIBUSB_ERROR_IO;
+ } else if (r < DEVICE_DESC_LENGTH) {
+ usbi_err(DEVICE_CTX(dev), "short read %d/%d", r, DEVICE_DESC_LENGTH);
+ return LIBUSB_ERROR_IO;
+ }
+
+ return 0;
+}
+
+static int op_get_device_descriptor(struct libusb_device *dev,
+ unsigned char *buffer, int *host_endian)
+{
+ if (sysfs_has_descriptors) {
+ return sysfs_get_device_descriptor(dev, buffer);
+ } else {
+ *host_endian = 1;
+ return usbfs_get_device_descriptor(dev, buffer);
+ }
+}
+
+static int usbfs_get_active_config_descriptor(struct libusb_device *dev,
+ unsigned char *buffer, size_t len)
+{
+ struct linux_device_priv *priv = __device_priv(dev);
+ if (!priv->config_descriptor)
+ return LIBUSB_ERROR_NOT_FOUND; /* device is unconfigured */
+
+ /* retrieve cached copy */
+ memcpy(buffer, priv->config_descriptor, len);
+ return 0;
+}
+
+/* read the bConfigurationValue for a device */
+static int sysfs_get_active_config(struct libusb_device *dev, int *config)
+{
+ char *endptr;
+ char tmp[4] = {0, 0, 0, 0};
+ long num;
+ int fd;
+ size_t r;
+
+ fd = __open_sysfs_attr(dev, "bConfigurationValue");
+ if (fd < 0)
+ return fd;
+
+ r = read(fd, tmp, sizeof(tmp));
+ close(fd);
+ if (r < 0) {
+ usbi_err(DEVICE_CTX(dev),
+ "read bConfigurationValue failed ret=%d errno=%d", r, errno);
+ return LIBUSB_ERROR_IO;
+ } else if (r == 0) {
+ usbi_err(DEVICE_CTX(dev), "device unconfigured");
+ *config = -1;
+ return 0;
+ }
+
+ if (tmp[sizeof(tmp) - 1] != 0) {
+ usbi_err(DEVICE_CTX(dev), "not null-terminated?");
+ return LIBUSB_ERROR_IO;
+ } else if (tmp[0] == 0) {
+ usbi_err(DEVICE_CTX(dev), "no configuration value?");
+ return LIBUSB_ERROR_IO;
+ }
+
+ num = strtol(tmp, &endptr, 10);
+ if (endptr == tmp) {
+ usbi_err(DEVICE_CTX(dev), "error converting '%s' to integer", tmp);
+ return LIBUSB_ERROR_IO;
+ }
+
+ *config = (int) num;
+ return 0;
+}
+
+/* takes a usbfs/descriptors fd seeked to the start of a configuration, and
+ * seeks to the next one. */
+static int seek_to_next_config(struct libusb_context *ctx, int fd,
+ int host_endian)
+{
+ struct libusb_config_descriptor config;
+ unsigned char tmp[6];
+ off_t off;
+ int r;
+
+ /* read first 6 bytes of descriptor */
+ r = read(fd, tmp, sizeof(tmp));
+ if (r < 0) {
+ usbi_err(ctx, "read failed ret=%d errno=%d", r, errno);
+ return LIBUSB_ERROR_IO;
+ } else if (r < sizeof(tmp)) {
+ usbi_err(ctx, "short descriptor read %d/%d", r, sizeof(tmp));
+ return LIBUSB_ERROR_IO;
+ }
+
+ /* seek forward to end of config */
+ usbi_parse_descriptor(tmp, "bbwbb", &config, host_endian);
+ off = lseek(fd, config.wTotalLength - sizeof(tmp), SEEK_CUR);
+ if (off < 0) {
+ usbi_err(ctx, "seek failed ret=%d errno=%d", off, errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ return 0;
+}
+
+static int sysfs_get_active_config_descriptor(struct libusb_device *dev,
+ unsigned char *buffer, size_t len)
+{
+ int fd;
+ ssize_t r;
+ off_t off;
+ int to_copy;
+ int config;
+ unsigned char tmp[6];
+
+ r = sysfs_get_active_config(dev, &config);
+ if (r < 0)
+ return r;
+ if (config == -1)
+ return LIBUSB_ERROR_NOT_FOUND;
+
+ usbi_dbg("active configuration %d", config);
+
+ /* sysfs provides access to an in-memory copy of the device descriptor,
+ * so we use that rather than keeping our own copy */
+
+ fd = __open_sysfs_attr(dev, "descriptors");
+ if (fd < 0)
+ return fd;
+
+ /* device might have been unconfigured since we read bConfigurationValue,
+ * so first check that there is any config descriptor data at all... */
+ off = lseek(fd, 0, SEEK_END);
+ if (off < 1) {
+ usbi_err(DEVICE_CTX(dev), "end seek failed, ret=%d errno=%d",
+ off, errno);
+ close(fd);
+ return LIBUSB_ERROR_IO;
+ } else if (off == DEVICE_DESC_LENGTH) {
+ close(fd);
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ off = lseek(fd, DEVICE_DESC_LENGTH, SEEK_SET);
+ if (off < 0) {
+ usbi_err(DEVICE_CTX(dev), "seek failed, ret=%d errno=%d", off, errno);
+ close(fd);
+ return LIBUSB_ERROR_IO;
+ }
+
+ /* unbounded loop: we expect the descriptor to be present under all
+ * circumstances */
+ while (1) {
+ r = read(fd, tmp, sizeof(tmp));
+ if (r < 0) {
+ usbi_err(DEVICE_CTX(dev), "read failed, ret=%d errno=%d",
+ fd, errno);
+ return LIBUSB_ERROR_IO;
+ } else if (r < sizeof(tmp)) {
+ usbi_err(DEVICE_CTX(dev), "short read %d/%d", r, sizeof(tmp));
+ return LIBUSB_ERROR_IO;
+ }
+
+ /* check bConfigurationValue */
+ if (tmp[5] == config)
+ break;
+
+ /* try the next descriptor */
+ off = lseek(fd, 0 - sizeof(tmp), SEEK_CUR);
+ if (off < 0)
+ return LIBUSB_ERROR_IO;
+
+ r = seek_to_next_config(DEVICE_CTX(dev), fd, 0);
+ if (r < 0)
+ return r;
+ }
+
+ to_copy = (len < sizeof(tmp)) ? len : sizeof(tmp);
+ memcpy(buffer, tmp, to_copy);
+ if (len > sizeof(tmp)) {
+ r = read(fd, buffer + sizeof(tmp), len - sizeof(tmp));
+ if (r < 0) {
+ usbi_err(DEVICE_CTX(dev), "read failed, ret=%d errno=%d",
+ fd, errno);
+ r = LIBUSB_ERROR_IO;
+ } else if (r == 0) {
+ usbi_dbg("device is unconfigured");
+ r = LIBUSB_ERROR_NOT_FOUND;
+ } else if (r < len - sizeof(tmp)) {
+ usbi_err(DEVICE_CTX(dev), "short read %d/%d", r, len);
+ r = LIBUSB_ERROR_IO;
+ }
+ } else {
+ r = 0;
+ }
+
+ close(fd);
+ return r;
+}
+
+static int op_get_active_config_descriptor(struct libusb_device *dev,
+ unsigned char *buffer, size_t len, int *host_endian)
+{
+ if (sysfs_has_descriptors) {
+ return sysfs_get_active_config_descriptor(dev, buffer, len);
+ } else {
+ return usbfs_get_active_config_descriptor(dev, buffer, len);
+ }
+}
+
+/* takes a usbfs fd, attempts to find the requested config and copy a certain
+ * amount of it into an output buffer. */
+static int get_config_descriptor(struct libusb_context *ctx, int fd,
+ uint8_t config_index, unsigned char *buffer, size_t len)
+{
+ off_t off;
+ ssize_t r;
+
+ off = lseek(fd, DEVICE_DESC_LENGTH, SEEK_SET);
+ if (off < 0) {
+ usbi_err(ctx, "seek failed ret=%d errno=%d", off, errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ /* might need to skip some configuration descriptors to reach the
+ * requested configuration */
+ while (config_index > 0) {
+ r = seek_to_next_config(ctx, fd, 1);
+ if (r < 0)
+ return r;
+ config_index--;
+ }
+
+ /* read the rest of the descriptor */
+ r = read(fd, buffer, len);
+ if (r < 0) {
+ usbi_err(ctx, "read failed ret=%d errno=%d", r, errno);
+ return LIBUSB_ERROR_IO;
+ } else if (r < len) {
+ usbi_err(ctx, "short output read %d/%d", r, len);
+ return LIBUSB_ERROR_IO;
+ }
+
+ return 0;
+}
+
+static int op_get_config_descriptor(struct libusb_device *dev,
+ uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian)
+{
+ char filename[PATH_MAX];
+ int fd;
+ int r;
+
+ /* always read from usbfs: sysfs only has the active descriptor
+ * this will involve waking the device up, but oh well! */
+
+ /* FIXME: the above is no longer true, new kernels have all descriptors
+ * in the descriptors file. but its kinda hard to detect if the kernel
+ * is sufficiently new. */
+
+ __get_usbfs_path(dev, filename);
+ fd = open(filename, O_RDONLY);
+ if (fd < 0) {
+ usbi_err(DEVICE_CTX(dev),
+ "open '%s' failed, ret=%d errno=%d", filename, fd, errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ r = get_config_descriptor(DEVICE_CTX(dev), fd, config_index, buffer, len);
+ close(fd);
+ return r;
+}
+
+/* cache the active config descriptor in memory. a value of -1 means that
+ * we aren't sure which one is active, so just assume the first one.
+ * only for usbfs. */
+static int cache_active_config(struct libusb_device *dev, int fd,
+ int active_config)
+{
+ struct linux_device_priv *priv = __device_priv(dev);
+ struct libusb_config_descriptor config;
+ unsigned char tmp[8];
+ unsigned char *buf;
+ int idx;
+ int r;
+
+ if (active_config == -1) {
+ idx = 0;
+ } else {
+ r = usbi_get_config_index_by_value(dev, active_config, &idx);
+ if (r < 0)
+ return r;
+ if (idx == -1)
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ r = get_config_descriptor(DEVICE_CTX(dev), fd, idx, tmp, sizeof(tmp));
+ if (r < 0) {
+ usbi_err(DEVICE_CTX(dev), "first read error %d", r);
+ return r;
+ }
+
+ usbi_parse_descriptor(tmp, "bbw", &config, 0);
+ buf = malloc(config.wTotalLength);
+ if (!buf)
+ return LIBUSB_ERROR_NO_MEM;
+
+ r = get_config_descriptor(DEVICE_CTX(dev), fd, idx, buf,
+ config.wTotalLength);
+ if (r < 0) {
+ free(buf);
+ return r;
+ }
+
+ if (priv->config_descriptor)
+ free(priv->config_descriptor);
+ priv->config_descriptor = buf;
+ return 0;
+}
+
+/* send a control message to retrieve active configuration */
+static int usbfs_get_active_config(struct libusb_device *dev, int fd)
+{
+ unsigned char active_config = 0;
+ int r;
+
+ struct usbfs_ctrltransfer ctrl = {
+ .bmRequestType = LIBUSB_ENDPOINT_IN,
+ .bRequest = LIBUSB_REQUEST_GET_CONFIGURATION,
+ .wValue = 0,
+ .wIndex = 0,
+ .wLength = 1,
+ .timeout = 1000,
+ .data = &active_config
+ };
+
+ r = ioctl(fd, IOCTL_USBFS_CONTROL, &ctrl);
+ if (r < 0) {
+ if (errno == ENODEV)
+ return LIBUSB_ERROR_NO_DEVICE;
+
+ /* we hit this error path frequently with buggy devices :( */
+ usbi_warn(DEVICE_CTX(dev),
+ "get_configuration failed ret=%d errno=%d", r, errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ return active_config;
+}
+
+static int initialize_device(struct libusb_device *dev, uint8_t busnum,
+ uint8_t devaddr, const char *sysfs_dir)
+{
+ struct linux_device_priv *priv = __device_priv(dev);
+ unsigned char *dev_buf;
+ char path[PATH_MAX];
+ int fd;
+ int active_config = 0;
+ int device_configured = 1;
+ ssize_t r;
+
+ dev->bus_number = busnum;
+ dev->device_address = devaddr;
+
+ if (sysfs_dir) {
+ priv->sysfs_dir = malloc(strlen(sysfs_dir) + 1);
+ if (!priv->sysfs_dir)
+ return LIBUSB_ERROR_NO_MEM;
+ strcpy(priv->sysfs_dir, sysfs_dir);
+ }
+
+ if (sysfs_has_descriptors)
+ return 0;
+
+ /* cache device descriptor in memory so that we can retrieve it later
+ * without waking the device up (op_get_device_descriptor) */
+
+ priv->dev_descriptor = NULL;
+ priv->config_descriptor = NULL;
+
+ if (sysfs_can_relate_devices) {
+ int tmp = sysfs_get_active_config(dev, &active_config);
+ if (tmp < 0)
+ return tmp;
+ if (active_config == -1)
+ device_configured = 0;
+ }
+
+ __get_usbfs_path(dev, path);
+ fd = open(path, O_RDWR);
+ if (fd < 0 && errno == EACCES) {
+ fd = open(path, O_RDONLY);
+ /* if we only have read-only access to the device, we cannot
+ * send a control message to determine the active config. just
+ * assume the first one is active. */
+ active_config = -1;
+ }
+
+ if (fd < 0) {
+ usbi_err(DEVICE_CTX(dev), "open failed, ret=%d errno=%d", fd, errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ if (!sysfs_can_relate_devices) {
+ if (active_config == -1) {
+ /* if we only have read-only access to the device, we cannot
+ * send a control message to determine the active config. just
+ * assume the first one is active. */
+ usbi_warn(DEVICE_CTX(dev), "access to %s is read-only; cannot "
+ "determine active configuration descriptor", path);
+ } else {
+ active_config = usbfs_get_active_config(dev, fd);
+ if (active_config == LIBUSB_ERROR_IO) {
+ /* buggy devices sometimes fail to report their active config.
+ * assume unconfigured and continue the probing */
+ usbi_warn(DEVICE_CTX(dev), "couldn't query active "
+ "configuration, assumung unconfigured");
+ device_configured = 0;
+ } else if (active_config < 0) {
+ close(fd);
+ return active_config;
+ } else if (active_config == 0) {
+ /* some buggy devices have a configuration 0, but we're
+ * reaching into the corner of a corner case here, so let's
+ * not support buggy devices in these circumstances.
+ * stick to the specs: a configuration value of 0 means
+ * unconfigured. */
+ usbi_dbg("active cfg 0? assuming unconfigured device");
+ device_configured = 0;
+ }
+ }
+ }
+
+ dev_buf = malloc(DEVICE_DESC_LENGTH);
+ if (!dev_buf) {
+ close(fd);
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ r = read(fd, dev_buf, DEVICE_DESC_LENGTH);
+ if (r < 0) {
+ usbi_err(DEVICE_CTX(dev),
+ "read descriptor failed ret=%d errno=%d", fd, errno);
+ free(dev_buf);
+ close(fd);
+ return LIBUSB_ERROR_IO;
+ } else if (r < DEVICE_DESC_LENGTH) {
+ usbi_err(DEVICE_CTX(dev), "short descriptor read (%d)", r);
+ free(dev_buf);
+ close(fd);
+ return LIBUSB_ERROR_IO;
+ }
+
+ /* bit of a hack: set num_configurations now because cache_active_config()
+ * calls usbi_get_config_index_by_value() which uses it */
+ dev->num_configurations = dev_buf[DEVICE_DESC_LENGTH - 1];
+
+ if (device_configured) {
+ r = cache_active_config(dev, fd, active_config);
+ if (r < 0) {
+ close(fd);
+ free(dev_buf);
+ return r;
+ }
+ }
+
+ close(fd);
+ priv->dev_descriptor = dev_buf;
+ return 0;
+}
+
+static int enumerate_device(struct libusb_context *ctx,
+ struct discovered_devs **_discdevs, uint8_t busnum, uint8_t devaddr,
+ const char *sysfs_dir)
+{
+ struct discovered_devs *discdevs;
+ unsigned long session_id;
+ int need_unref = 0;
+ struct libusb_device *dev;
+ int r = 0;
+
+ /* FIXME: session ID is not guaranteed unique as addresses can wrap and
+ * will be reused. instead we should add a simple sysfs attribute with
+ * a session ID. */
+ session_id = busnum << 8 | devaddr;
+ usbi_dbg("busnum %d devaddr %d session_id %ld", busnum, devaddr,
+ session_id);
+
+ dev = usbi_get_device_by_session_id(ctx, session_id);
+ if (dev) {
+ usbi_dbg("using existing device for %d/%d (session %ld)",
+ busnum, devaddr, session_id);
+ } else {
+ usbi_dbg("allocating new device for %d/%d (session %ld)",
+ busnum, devaddr, session_id);
+ dev = usbi_alloc_device(ctx, session_id);
+ if (!dev)
+ return LIBUSB_ERROR_NO_MEM;
+ need_unref = 1;
+ r = initialize_device(dev, busnum, devaddr, sysfs_dir);
+ if (r < 0)
+ goto out;
+ r = usbi_sanitize_device(dev);
+ if (r < 0)
+ goto out;
+ }
+
+ discdevs = discovered_devs_append(*_discdevs, dev);
+ if (!discdevs)
+ r = LIBUSB_ERROR_NO_MEM;
+ else
+ *_discdevs = discdevs;
+
+out:
+ if (need_unref)
+ libusb_unref_device(dev);
+ return r;
+}
+
+/* open a bus directory and adds all discovered devices to discdevs. on
+ * failure (non-zero return) the pre-existing discdevs should be destroyed
+ * (and devices freed). on success, the new discdevs pointer should be used
+ * as it may have been moved. */
+static int usbfs_scan_busdir(struct libusb_context *ctx,
+ struct discovered_devs **_discdevs, uint8_t busnum)
+{
+ DIR *dir;
+ char dirpath[PATH_MAX];
+ struct dirent *entry;
+ struct discovered_devs *discdevs = *_discdevs;
+ int r = 0;
+
+ snprintf(dirpath, PATH_MAX, "%s/%03d", usbfs_path, busnum);
+ usbi_dbg("%s", dirpath);
+ dir = opendir(dirpath);
+ if (!dir) {
+ usbi_err(ctx, "opendir '%s' failed, errno=%d", dirpath, errno);
+ /* FIXME: should handle valid race conditions like hub unplugged
+ * during directory iteration - this is not an error */
+ return LIBUSB_ERROR_IO;
+ }
+
+ while ((entry = readdir(dir))) {
+ int devaddr;
+
+ if (entry->d_name[0] == '.')
+ continue;
+
+ devaddr = atoi(entry->d_name);
+ if (devaddr == 0) {
+ usbi_dbg("unknown dir entry %s", entry->d_name);
+ continue;
+ }
+
+ r = enumerate_device(ctx, &discdevs, busnum, (uint8_t) devaddr, NULL);
+ if (r < 0)
+ goto out;
+ }
+
+ *_discdevs = discdevs;
+out:
+ closedir(dir);
+ return r;
+}
+
+static int usbfs_get_device_list(struct libusb_context *ctx,
+ struct discovered_devs **_discdevs)
+{
+ struct dirent *entry;
+ DIR *buses = opendir(usbfs_path);
+ struct discovered_devs *discdevs = *_discdevs;
+ int r = 0;
+
+ if (!buses) {
+ usbi_err(ctx, "opendir buses failed errno=%d", errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ while ((entry = readdir(buses))) {
+ struct discovered_devs *discdevs_new = discdevs;
+ int busnum;
+
+ if (entry->d_name[0] == '.')
+ continue;
+
+ busnum = atoi(entry->d_name);
+ if (busnum == 0) {
+ usbi_dbg("unknown dir entry %s", entry->d_name);
+ continue;
+ }
+
+ r = usbfs_scan_busdir(ctx, &discdevs_new, busnum);
+ if (r < 0)
+ goto out;
+ discdevs = discdevs_new;
+ }
+
+out:
+ closedir(buses);
+ *_discdevs = discdevs;
+ return r;
+
+}
+
+static int sysfs_scan_device(struct libusb_context *ctx,
+ struct discovered_devs **_discdevs, const char *devname,
+ int *usbfs_fallback)
+{
+ int r;
+ FILE *fd;
+ char filename[PATH_MAX];
+ int busnum;
+ int devaddr;
+
+ usbi_dbg("scan %s", devname);
+
+ /* determine descriptors presence ahead of time, we need to know this
+ * when we reach initialize_device */
+ if (sysfs_has_descriptors == -1) {
+ struct stat statbuf;
+
+ snprintf(filename, PATH_MAX, "%s/%s/descriptors", SYSFS_DEVICE_PATH,
+ devname);
+ r = stat(filename, &statbuf);
+ if (r == 0 && S_ISREG(statbuf.st_mode)) {
+ usbi_dbg("sysfs descriptors available");
+ sysfs_has_descriptors = 1;
+ } else {
+ usbi_dbg("sysfs descriptors not available");
+ sysfs_has_descriptors = 0;
+ }
+ }
+
+ snprintf(filename, PATH_MAX, "%s/%s/busnum", SYSFS_DEVICE_PATH, devname);
+ fd = fopen(filename, "r");
+ if (!fd) {
+ if (errno == ENOENT) {
+ usbi_dbg("busnum not found, cannot relate sysfs to usbfs, "
+ "falling back on pure usbfs");
+ sysfs_can_relate_devices = 0;
+ *usbfs_fallback = 1;
+ return LIBUSB_ERROR_OTHER;
+ }
+ usbi_err(ctx, "open busnum failed, errno=%d", errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ sysfs_can_relate_devices = 1;
+
+ r = fscanf(fd, "%d", &busnum);
+ fclose(fd);
+ if (r != 1) {
+ usbi_err(ctx, "fscanf busnum returned %d, errno=%d", r, errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ snprintf(filename, PATH_MAX, "%s/%s/devnum", SYSFS_DEVICE_PATH, devname);
+ fd = fopen(filename, "r");
+ if (!fd) {
+ usbi_err(ctx, "open devnum failed, errno=%d", errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ r = fscanf(fd, "%d", &devaddr);
+ fclose(fd);
+ if (r != 1) {
+ usbi_err(ctx, "fscanf devnum returned %d, errno=%d", r, errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ usbi_dbg("bus=%d dev=%d", busnum, devaddr);
+ if (busnum > 255 || devaddr > 255)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ return enumerate_device(ctx, _discdevs, busnum & 0xff, devaddr & 0xff,
+ devname);
+}
+
+static int sysfs_get_device_list(struct libusb_context *ctx,
+ struct discovered_devs **_discdevs, int *usbfs_fallback)
+{
+ struct discovered_devs *discdevs = *_discdevs;
+ DIR *devices = opendir(SYSFS_DEVICE_PATH);
+ struct dirent *entry;
+ int r = 0;
+
+ if (!devices) {
+ usbi_err(ctx, "opendir devices failed errno=%d", errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ while ((entry = readdir(devices))) {
+ struct discovered_devs *discdevs_new = discdevs;
+
+ if ((!isdigit(entry->d_name[0]) && strncmp(entry->d_name, "usb", 3))
+ || strchr(entry->d_name, ':'))
+ continue;
+
+ r = sysfs_scan_device(ctx, &discdevs_new, entry->d_name,
+ usbfs_fallback);
+ if (r < 0)
+ goto out;
+ discdevs = discdevs_new;
+ }
+
+out:
+ closedir(devices);
+ *_discdevs = discdevs;
+ return r;
+}
+
+static int op_get_device_list(struct libusb_context *ctx,
+ struct discovered_devs **_discdevs)
+{
+ /* we can retrieve device list and descriptors from sysfs or usbfs.
+ * sysfs is preferable, because if we use usbfs we end up resuming
+ * any autosuspended USB devices. however, sysfs is not available
+ * everywhere, so we need a usbfs fallback too.
+ *
+ * as described in the "sysfs vs usbfs" comment, sometimes we have
+ * sysfs but not enough information to relate sysfs devices to usbfs
+ * nodes. the usbfs_fallback variable is used to indicate that we should
+ * fall back on usbfs.
+ */
+ if (sysfs_can_relate_devices != 0) {
+ int usbfs_fallback = 0;
+ int r = sysfs_get_device_list(ctx, _discdevs, &usbfs_fallback);
+ if (!usbfs_fallback)
+ return r;
+ }
+
+ return usbfs_get_device_list(ctx, _discdevs);
+}
+
+static int op_open(struct libusb_device_handle *handle)
+{
+ struct linux_device_handle_priv *hpriv = __device_handle_priv(handle);
+ char filename[PATH_MAX];
+
+ __get_usbfs_path(handle->dev, filename);
+ hpriv->fd = open(filename, O_RDWR);
+ if (hpriv->fd < 0) {
+ if (errno == EACCES) {
+ usbi_err(HANDLE_CTX(handle), "libusb couldn't open USB device %s: "
+ "Permission denied.", filename);
+ usbi_err(HANDLE_CTX(handle),
+ "libusb requires write access to USB device nodes.");
+ return LIBUSB_ERROR_ACCESS;
+ } else if (errno == ENOENT) {
+ return LIBUSB_ERROR_NO_DEVICE;
+ } else {
+ usbi_err(HANDLE_CTX(handle),
+ "open failed, code %d errno %d", hpriv->fd, errno);
+ return LIBUSB_ERROR_IO;
+ }
+ }
+
+ return usbi_add_pollfd(HANDLE_CTX(handle), hpriv->fd, POLLOUT);
+}
+
+static void op_close(struct libusb_device_handle *dev_handle)
+{
+ int fd = __device_handle_priv(dev_handle)->fd;
+ usbi_remove_pollfd(HANDLE_CTX(dev_handle), fd);
+ close(fd);
+}
+
+static int op_get_configuration(struct libusb_device_handle *handle,
+ int *config)
+{
+ int r;
+ if (sysfs_can_relate_devices != 1)
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+
+ r = sysfs_get_active_config(handle->dev, config);
+ if (*config == -1)
+ *config = 0;
+
+ return 0;
+}
+
+static int op_set_configuration(struct libusb_device_handle *handle, int config)
+{
+ struct linux_device_priv *priv = __device_priv(handle->dev);
+ int fd = __device_handle_priv(handle)->fd;
+ int r = ioctl(fd, IOCTL_USBFS_SETCONFIG, &config);
+ if (r) {
+ if (errno == EINVAL)
+ return LIBUSB_ERROR_NOT_FOUND;
+ else if (errno == EBUSY)
+ return LIBUSB_ERROR_BUSY;
+ else if (errno == ENODEV)
+ return LIBUSB_ERROR_NO_DEVICE;
+
+ usbi_err(HANDLE_CTX(handle), "failed, error %d errno %d", r, errno);
+ return LIBUSB_ERROR_OTHER;
+ }
+
+ if (!sysfs_has_descriptors) {
+ /* update our cached active config descriptor */
+ if (config == -1) {
+ if (priv->config_descriptor) {
+ free(priv->config_descriptor);
+ priv->config_descriptor = NULL;
+ }
+ } else {
+ r = cache_active_config(handle->dev, fd, config);
+ if (r < 0)
+ usbi_warn(HANDLE_CTX(handle),
+ "failed to update cached config descriptor, error %d", r);
+ }
+ }
+
+ return 0;
+}
+
+static int op_claim_interface(struct libusb_device_handle *handle, int iface)
+{
+ int fd = __device_handle_priv(handle)->fd;
+ int r = ioctl(fd, IOCTL_USBFS_CLAIMINTF, &iface);
+ if (r) {
+ if (errno == ENOENT)
+ return LIBUSB_ERROR_NOT_FOUND;
+ else if (errno == EBUSY)
+ return LIBUSB_ERROR_BUSY;
+ else if (errno == ENODEV)
+ return LIBUSB_ERROR_NO_DEVICE;
+
+ usbi_err(HANDLE_CTX(handle),
+ "claim interface failed, error %d errno %d", r, errno);
+ return LIBUSB_ERROR_OTHER;
+ }
+ return 0;
+}
+
+static int op_release_interface(struct libusb_device_handle *handle, int iface)
+{
+ int fd = __device_handle_priv(handle)->fd;
+ int r = ioctl(fd, IOCTL_USBFS_RELEASEINTF, &iface);
+ if (r) {
+ if (errno == ENODEV)
+ return LIBUSB_ERROR_NO_DEVICE;
+
+ usbi_err(HANDLE_CTX(handle),
+ "release interface failed, error %d errno %d", r, errno);
+ return LIBUSB_ERROR_OTHER;
+ }
+ return 0;
+}
+
+static int op_set_interface(struct libusb_device_handle *handle, int iface,
+ int altsetting)
+{
+ int fd = __device_handle_priv(handle)->fd;
+ struct usbfs_setinterface setintf;
+ int r;
+
+ setintf.interface = iface;
+ setintf.altsetting = altsetting;
+ r = ioctl(fd, IOCTL_USBFS_SETINTF, &setintf);
+ if (r) {
+ if (errno == EINVAL)
+ return LIBUSB_ERROR_NOT_FOUND;
+ else if (errno == ENODEV)
+ return LIBUSB_ERROR_NO_DEVICE;
+
+ usbi_err(HANDLE_CTX(handle),
+ "setintf failed error %d errno %d", r, errno);
+ return LIBUSB_ERROR_OTHER;
+ }
+
+ return 0;
+}
+
+static int op_clear_halt(struct libusb_device_handle *handle,
+ unsigned char endpoint)
+{
+ int fd = __device_handle_priv(handle)->fd;
+ unsigned int _endpoint = endpoint;
+ int r = ioctl(fd, IOCTL_USBFS_CLEAR_HALT, &_endpoint);
+ if (r) {
+ if (errno == ENOENT)
+ return LIBUSB_ERROR_NOT_FOUND;
+ else if (errno == ENODEV)
+ return LIBUSB_ERROR_NO_DEVICE;
+
+ usbi_err(HANDLE_CTX(handle),
+ "clear_halt failed error %d errno %d", r, errno);
+ return LIBUSB_ERROR_OTHER;
+ }
+
+ return 0;
+}
+
+static int op_reset_device(struct libusb_device_handle *handle)
+{
+ int fd = __device_handle_priv(handle)->fd;
+ int r = ioctl(fd, IOCTL_USBFS_RESET, NULL);
+ if (r) {
+ if (errno == ENODEV)
+ return LIBUSB_ERROR_NOT_FOUND;
+
+ usbi_err(HANDLE_CTX(handle),
+ "reset failed error %d errno %d", r, errno);
+ return LIBUSB_ERROR_OTHER;
+ }
+
+ return 0;
+}
+
+static int op_kernel_driver_active(struct libusb_device_handle *handle,
+ int interface)
+{
+ int fd = __device_handle_priv(handle)->fd;
+ struct usbfs_getdriver getdrv;
+ int r;
+
+ getdrv.interface = interface;
+ r = ioctl(fd, IOCTL_USBFS_GETDRIVER, &getdrv);
+ if (r) {
+ if (errno == ENODATA)
+ return 0;
+ else if (errno == ENODEV)
+ return LIBUSB_ERROR_NO_DEVICE;
+
+ usbi_err(HANDLE_CTX(handle),
+ "get driver failed error %d errno %d", r, errno);
+ return LIBUSB_ERROR_OTHER;
+ }
+
+ return 1;
+}
+
+static int op_detach_kernel_driver(struct libusb_device_handle *handle,
+ int interface)
+{
+ int fd = __device_handle_priv(handle)->fd;
+ struct usbfs_ioctl command;
+ int r;
+
+ command.ifno = interface;
+ command.ioctl_code = IOCTL_USBFS_DISCONNECT;
+ command.data = NULL;
+
+ r = ioctl(fd, IOCTL_USBFS_IOCTL, &command);
+ if (r) {
+ if (errno == ENODATA)
+ return LIBUSB_ERROR_NOT_FOUND;
+ else if (errno == EINVAL)
+ return LIBUSB_ERROR_INVALID_PARAM;
+ else if (errno == ENODEV)
+ return LIBUSB_ERROR_NO_DEVICE;
+
+ usbi_err(HANDLE_CTX(handle),
+ "detach failed error %d errno %d", r, errno);
+ return LIBUSB_ERROR_OTHER;
+ }
+
+ return 0;
+}
+
+static int op_attach_kernel_driver(struct libusb_device_handle *handle,
+ int interface)
+{
+ int fd = __device_handle_priv(handle)->fd;
+ struct usbfs_ioctl command;
+ int r;
+
+ command.ifno = interface;
+ command.ioctl_code = IOCTL_USBFS_CONNECT;
+ command.data = NULL;
+
+ r = ioctl(fd, IOCTL_USBFS_IOCTL, &command);
+ if (r < 0) {
+ if (errno == ENODATA)
+ return LIBUSB_ERROR_NOT_FOUND;
+ else if (errno == EINVAL)
+ return LIBUSB_ERROR_INVALID_PARAM;
+ else if (errno == ENODEV)
+ return LIBUSB_ERROR_NO_DEVICE;
+ else if (errno == EBUSY)
+ return LIBUSB_ERROR_BUSY;
+
+ usbi_err(HANDLE_CTX(handle),
+ "attach failed error %d errno %d", r, errno);
+ return LIBUSB_ERROR_OTHER;
+ } else if (r == 0) {
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ return 0;
+}
+
+static void op_destroy_device(struct libusb_device *dev)
+{
+ struct linux_device_priv *priv = __device_priv(dev);
+ if (!sysfs_has_descriptors) {
+ if (priv->dev_descriptor)
+ free(priv->dev_descriptor);
+ if (priv->config_descriptor)
+ free(priv->config_descriptor);
+ }
+ if (priv->sysfs_dir)
+ free(priv->sysfs_dir);
+}
+
+static void free_iso_urbs(struct linux_transfer_priv *tpriv)
+{
+ int i;
+ for (i = 0; i < tpriv->num_urbs; i++) {
+ struct usbfs_urb *urb = tpriv->iso_urbs[i];
+ if (!urb)
+ break;
+ free(urb);
+ }
+
+ free(tpriv->iso_urbs);
+ tpriv->iso_urbs = NULL;
+}
+
+static int submit_bulk_transfer(struct usbi_transfer *itransfer,
+ unsigned char urb_type)
+{
+ struct libusb_transfer *transfer =
+ __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+ struct linux_device_handle_priv *dpriv =
+ __device_handle_priv(transfer->dev_handle);
+ struct usbfs_urb *urbs;
+ int is_out = (transfer->endpoint & LIBUSB_ENDPOINT_DIR_MASK)
+ == LIBUSB_ENDPOINT_OUT;
+ int r;
+ int i;
+ size_t alloc_size;
+
+ if (tpriv->urbs)
+ return LIBUSB_ERROR_BUSY;
+
+ /* usbfs places a 16kb limit on bulk URBs. we divide up larger requests
+ * into smaller units to meet such restriction, then fire off all the
+ * units at once. it would be simpler if we just fired one unit at a time,
+ * but there is a big performance gain through doing it this way. */
+ int num_urbs = transfer->length / MAX_BULK_BUFFER_LENGTH;
+ int last_urb_partial = 0;
+
+ if (transfer->length == 0) {
+ num_urbs = 1;
+ } else if ((transfer->length % MAX_BULK_BUFFER_LENGTH) > 0) {
+ last_urb_partial = 1;
+ num_urbs++;
+ }
+ usbi_dbg("need %d urbs for new transfer with length %d", num_urbs,
+ transfer->length);
+ alloc_size = num_urbs * sizeof(struct usbfs_urb);
+ urbs = malloc(alloc_size);
+ if (!urbs)
+ return LIBUSB_ERROR_NO_MEM;
+ memset(urbs, 0, alloc_size);
+ tpriv->urbs = urbs;
+ tpriv->num_urbs = num_urbs;
+ tpriv->num_retired = 0;
+ tpriv->reap_action = NORMAL;
+ tpriv->reap_status = LIBUSB_TRANSFER_COMPLETED;
+
+ for (i = 0; i < num_urbs; i++) {
+ struct usbfs_urb *urb = &urbs[i];
+ urb->usercontext = itransfer;
+ urb->type = urb_type;
+ urb->endpoint = transfer->endpoint;
+ urb->buffer = transfer->buffer + (i * MAX_BULK_BUFFER_LENGTH);
+ if (supports_flag_bulk_continuation && !is_out)
+ urb->flags = USBFS_URB_SHORT_NOT_OK;
+ if (i == num_urbs - 1 && last_urb_partial)
+ urb->buffer_length = transfer->length % MAX_BULK_BUFFER_LENGTH;
+ else if (transfer->length == 0)
+ urb->buffer_length = 0;
+ else
+ urb->buffer_length = MAX_BULK_BUFFER_LENGTH;
+
+ if (i > 0 && supports_flag_bulk_continuation)
+ urb->flags |= USBFS_URB_BULK_CONTINUATION;
+
+ r = ioctl(dpriv->fd, IOCTL_USBFS_SUBMITURB, urb);
+ if (r < 0) {
+ int j;
+
+ if (errno == ENODEV) {
+ r = LIBUSB_ERROR_NO_DEVICE;
+ } else {
+ usbi_err(TRANSFER_CTX(transfer),
+ "submiturb failed error %d errno=%d", r, errno);
+ r = LIBUSB_ERROR_IO;
+ }
+
+ /* if the first URB submission fails, we can simply free up and
+ * return failure immediately. */
+ if (i == 0) {
+ usbi_dbg("first URB failed, easy peasy");
+ free(urbs);
+ tpriv->urbs = NULL;
+ return r;
+ }
+
+ /* if it's not the first URB that failed, the situation is a bit
+ * tricky. we may need to discard all previous URBs. there are
+ * complications:
+ * - discarding is asynchronous - discarded urbs will be reaped
+ * later. the user must not have freed the transfer when the
+ * discarded URBs are reaped, otherwise libusb will be using
+ * freed memory.
+ * - the earlier URBs may have completed successfully and we do
+ * not want to throw away any data.
+ * - this URB failing may be no error; EREMOTEIO means that
+ * this transfer simply didn't need all the URBs we submitted
+ * so, we report that the transfer was submitted successfully and
+ * in case of error we discard all previous URBs. later when
+ * the final reap completes we can report error to the user,
+ * or success if an earlier URB was completed successfully.
+ */
+ tpriv->reap_action = EREMOTEIO == errno ? COMPLETED_EARLY : SUBMIT_FAILED;
+
+ /* The URBs we haven't submitted yet we count as already
+ * retired. */
+ tpriv->num_retired += num_urbs - i;
+
+ /* If we completed short then don't try to discard. */
+ if (COMPLETED_EARLY == tpriv->reap_action)
+ return 0;
+
+ for (j = 0; j < i; j++) {
+ int tmp = ioctl(dpriv->fd, IOCTL_USBFS_DISCARDURB, &urbs[j]);
+ if (tmp && errno != EINVAL)
+ usbi_warn(TRANSFER_CTX(transfer),
+ "unrecognised discard errno %d", errno);
+ }
+
+ usbi_dbg("reporting successful submission but waiting for %d "
+ "discards before reporting error", i);
+ return 0;
+ }
+ }
+
+ return 0;
+}
+
+static int submit_iso_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer =
+ __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+ struct linux_device_handle_priv *dpriv =
+ __device_handle_priv(transfer->dev_handle);
+ struct usbfs_urb **urbs;
+ size_t alloc_size;
+ int num_packets = transfer->num_iso_packets;
+ int i;
+ int this_urb_len = 0;
+ int num_urbs = 1;
+ int packet_offset = 0;
+ unsigned int packet_len;
+ unsigned char *urb_buffer = transfer->buffer;
+
+ if (tpriv->iso_urbs)
+ return LIBUSB_ERROR_BUSY;
+
+ /* usbfs places a 32kb limit on iso URBs. we divide up larger requests
+ * into smaller units to meet such restriction, then fire off all the
+ * units at once. it would be simpler if we just fired one unit at a time,
+ * but there is a big performance gain through doing it this way. */
+
+ /* calculate how many URBs we need */
+ for (i = 0; i < num_packets; i++) {
+ int space_remaining = MAX_ISO_BUFFER_LENGTH - this_urb_len;
+ packet_len = transfer->iso_packet_desc[i].length;
+
+ if (packet_len > space_remaining) {
+ num_urbs++;
+ this_urb_len = packet_len;
+ } else {
+ this_urb_len += packet_len;
+ }
+ }
+ usbi_dbg("need %d 32k URBs for transfer", num_urbs);
+
+ alloc_size = num_urbs * sizeof(*urbs);
+ urbs = malloc(alloc_size);
+ if (!urbs)
+ return LIBUSB_ERROR_NO_MEM;
+ memset(urbs, 0, alloc_size);
+
+ tpriv->iso_urbs = urbs;
+ tpriv->num_urbs = num_urbs;
+ tpriv->num_retired = 0;
+ tpriv->reap_action = NORMAL;
+ tpriv->iso_packet_offset = 0;
+
+ /* allocate + initialize each URB with the correct number of packets */
+ for (i = 0; i < num_urbs; i++) {
+ struct usbfs_urb *urb;
+ int space_remaining_in_urb = MAX_ISO_BUFFER_LENGTH;
+ int urb_packet_offset = 0;
+ unsigned char *urb_buffer_orig = urb_buffer;
+ int j;
+ int k;
+
+ /* swallow up all the packets we can fit into this URB */
+ while (packet_offset < transfer->num_iso_packets) {
+ packet_len = transfer->iso_packet_desc[packet_offset].length;
+ if (packet_len <= space_remaining_in_urb) {
+ /* throw it in */
+ urb_packet_offset++;
+ packet_offset++;
+ space_remaining_in_urb -= packet_len;
+ urb_buffer += packet_len;
+ } else {
+ /* it can't fit, save it for the next URB */
+ break;
+ }
+ }
+
+ alloc_size = sizeof(*urb)
+ + (urb_packet_offset * sizeof(struct usbfs_iso_packet_desc));
+ urb = malloc(alloc_size);
+ if (!urb) {
+ free_iso_urbs(tpriv);
+ return LIBUSB_ERROR_NO_MEM;
+ }
+ memset(urb, 0, alloc_size);
+ urbs[i] = urb;
+
+ /* populate packet lengths */
+ for (j = 0, k = packet_offset - urb_packet_offset;
+ k < packet_offset; k++, j++) {
+ packet_len = transfer->iso_packet_desc[k].length;
+ urb->iso_frame_desc[j].length = packet_len;
+ }
+
+ urb->usercontext = itransfer;
+ urb->type = USBFS_URB_TYPE_ISO;
+ /* FIXME: interface for non-ASAP data? */
+ urb->flags = USBFS_URB_ISO_ASAP;
+ urb->endpoint = transfer->endpoint;
+ urb->number_of_packets = urb_packet_offset;
+ urb->buffer = urb_buffer_orig;
+ }
+
+ /* submit URBs */
+ for (i = 0; i < num_urbs; i++) {
+ int r = ioctl(dpriv->fd, IOCTL_USBFS_SUBMITURB, urbs[i]);
+ if (r < 0) {
+ int j;
+
+ if (errno == ENODEV) {
+ r = LIBUSB_ERROR_NO_DEVICE;
+ } else {
+ usbi_err(TRANSFER_CTX(transfer),
+ "submiturb failed error %d errno=%d", r, errno);
+ r = LIBUSB_ERROR_IO;
+ }
+
+ /* if the first URB submission fails, we can simply free up and
+ * return failure immediately. */
+ if (i == 0) {
+ usbi_dbg("first URB failed, easy peasy");
+ free_iso_urbs(tpriv);
+ return r;
+ }
+
+ /* if it's not the first URB that failed, the situation is a bit
+ * tricky. we must discard all previous URBs. there are
+ * complications:
+ * - discarding is asynchronous - discarded urbs will be reaped
+ * later. the user must not have freed the transfer when the
+ * discarded URBs are reaped, otherwise libusb will be using
+ * freed memory.
+ * - the earlier URBs may have completed successfully and we do
+ * not want to throw away any data.
+ * so, in this case we discard all the previous URBs BUT we report
+ * that the transfer was submitted successfully. then later when
+ * the final discard completes we can report error to the user.
+ */
+ tpriv->reap_action = SUBMIT_FAILED;
+
+ /* The URBs we haven't submitted yet we count as already
+ * retired. */
+ tpriv->num_retired = num_urbs - i;
+ for (j = 0; j < i; j++) {
+ int tmp = ioctl(dpriv->fd, IOCTL_USBFS_DISCARDURB, urbs[j]);
+ if (tmp && errno != EINVAL)
+ usbi_warn(TRANSFER_CTX(transfer),
+ "unrecognised discard errno %d", errno);
+ }
+
+ usbi_dbg("reporting successful submission but waiting for %d "
+ "discards before reporting error", i);
+ return 0;
+ }
+ }
+
+ return 0;
+}
+
+static int submit_control_transfer(struct usbi_transfer *itransfer)
+{
+ struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+ struct libusb_transfer *transfer =
+ __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct linux_device_handle_priv *dpriv =
+ __device_handle_priv(transfer->dev_handle);
+ struct usbfs_urb *urb;
+ int r;
+
+ if (tpriv->urbs)
+ return LIBUSB_ERROR_BUSY;
+
+ if (transfer->length - LIBUSB_CONTROL_SETUP_SIZE > MAX_CTRL_BUFFER_LENGTH)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ urb = malloc(sizeof(struct usbfs_urb));
+ if (!urb)
+ return LIBUSB_ERROR_NO_MEM;
+ memset(urb, 0, sizeof(struct usbfs_urb));
+ tpriv->urbs = urb;
+ tpriv->reap_action = NORMAL;
+
+ urb->usercontext = itransfer;
+ urb->type = USBFS_URB_TYPE_CONTROL;
+ urb->endpoint = transfer->endpoint;
+ urb->buffer = transfer->buffer;
+ urb->buffer_length = transfer->length;
+
+ r = ioctl(dpriv->fd, IOCTL_USBFS_SUBMITURB, urb);
+ if (r < 0) {
+ free(urb);
+ tpriv->urbs = NULL;
+ if (errno == ENODEV)
+ return LIBUSB_ERROR_NO_DEVICE;
+
+ usbi_err(TRANSFER_CTX(transfer),
+ "submiturb failed error %d errno=%d", r, errno);
+ return LIBUSB_ERROR_IO;
+ }
+ return 0;
+}
+
+static int op_submit_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer =
+ __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+
+ switch (transfer->type) {
+ case LIBUSB_TRANSFER_TYPE_CONTROL:
+ return submit_control_transfer(itransfer);
+ case LIBUSB_TRANSFER_TYPE_BULK:
+ return submit_bulk_transfer(itransfer, USBFS_URB_TYPE_BULK);
+ case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+ return submit_bulk_transfer(itransfer, USBFS_URB_TYPE_INTERRUPT);
+ case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+ return submit_iso_transfer(itransfer);
+ default:
+ usbi_err(TRANSFER_CTX(transfer),
+ "unknown endpoint type %d", transfer->type);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+}
+
+static int cancel_control_transfer(struct usbi_transfer *itransfer)
+{
+ struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+ struct libusb_transfer *transfer =
+ __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct linux_device_handle_priv *dpriv =
+ __device_handle_priv(transfer->dev_handle);
+ int r;
+
+ if (!tpriv->urbs)
+ return LIBUSB_ERROR_NOT_FOUND;
+
+ tpriv->reap_action = CANCELLED;
+ r = ioctl(dpriv->fd, IOCTL_USBFS_DISCARDURB, tpriv->urbs);
+ if(r) {
+ if (errno == EINVAL) {
+ usbi_dbg("URB not found --> assuming ready to be reaped");
+ return 0;
+ } else {
+ usbi_err(TRANSFER_CTX(transfer),
+ "unrecognised DISCARD code %d", errno);
+ return LIBUSB_ERROR_OTHER;
+ }
+ }
+
+ return 0;
+}
+
+static int cancel_bulk_transfer(struct usbi_transfer *itransfer)
+{
+ struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+ struct libusb_transfer *transfer =
+ __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct linux_device_handle_priv *dpriv =
+ __device_handle_priv(transfer->dev_handle);
+ int i;
+
+ if (!tpriv->urbs)
+ return LIBUSB_ERROR_NOT_FOUND;
+
+ if (tpriv->reap_action != ERROR)
+ tpriv->reap_action = CANCELLED;
+
+ for (i = 0; i < tpriv->num_urbs; i++) {
+ int tmp = ioctl(dpriv->fd, IOCTL_USBFS_DISCARDURB, &tpriv->urbs[i]);
+ if (tmp && errno != EINVAL)
+ usbi_warn(TRANSFER_CTX(transfer),
+ "unrecognised discard errno %d", errno);
+ }
+ return 0;
+}
+
+static int cancel_iso_transfer(struct usbi_transfer *itransfer)
+{
+ struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+ struct libusb_transfer *transfer =
+ __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct linux_device_handle_priv *dpriv =
+ __device_handle_priv(transfer->dev_handle);
+ int i;
+
+ if (!tpriv->iso_urbs)
+ return LIBUSB_ERROR_NOT_FOUND;
+
+ tpriv->reap_action = CANCELLED;
+ for (i = 0; i < tpriv->num_urbs; i++) {
+ int tmp = ioctl(dpriv->fd, IOCTL_USBFS_DISCARDURB, tpriv->iso_urbs[i]);
+ if (tmp && errno != EINVAL)
+ usbi_warn(TRANSFER_CTX(transfer),
+ "unrecognised discard errno %d", errno);
+ }
+ return 0;
+}
+
+static int op_cancel_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer =
+ __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+
+ switch (transfer->type) {
+ case LIBUSB_TRANSFER_TYPE_CONTROL:
+ return cancel_control_transfer(itransfer);
+ case LIBUSB_TRANSFER_TYPE_BULK:
+ case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+ return cancel_bulk_transfer(itransfer);
+ case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+ return cancel_iso_transfer(itransfer);
+ default:
+ usbi_err(TRANSFER_CTX(transfer),
+ "unknown endpoint type %d", transfer->type);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+}
+
+static void op_clear_transfer_priv(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer =
+ __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+
+ switch (transfer->type) {
+ case LIBUSB_TRANSFER_TYPE_CONTROL:
+ case LIBUSB_TRANSFER_TYPE_BULK:
+ case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+ free(tpriv->urbs);
+ tpriv->urbs = NULL;
+ break;
+ case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+ free_iso_urbs(tpriv);
+ break;
+ default:
+ usbi_err(TRANSFER_CTX(transfer),
+ "unknown endpoint type %d", transfer->type);
+ }
+}
+
+static int handle_bulk_completion(struct usbi_transfer *itransfer,
+ struct usbfs_urb *urb)
+{
+ struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct linux_device_handle_priv *dpriv = __device_handle_priv(transfer->dev_handle);
+ int urb_idx = urb - tpriv->urbs;
+
+ usbi_mutex_lock(&itransfer->lock);
+ usbi_dbg("handling completion status %d of bulk urb %d/%d", urb->status,
+ urb_idx + 1, tpriv->num_urbs);
+
+ tpriv->num_retired++;
+
+ if (tpriv->reap_action != NORMAL) {
+ /* cancelled, submit_fail, or completed early */
+ usbi_dbg("abnormal reap: urb status %d", urb->status);
+
+ /* even though we're in the process of cancelling, it's possible that
+ * we may receive some data in these URBs that we don't want to lose.
+ * examples:
+ * 1. while the kernel is cancelling all the packets that make up an
+ * URB, a few of them might complete. so we get back a successful
+ * cancellation *and* some data.
+ * 2. we receive a short URB which marks the early completion condition,
+ * so we start cancelling the remaining URBs. however, we're too
+ * slow and another URB completes (or at least completes partially).
+ *
+ * When this happens, our objectives are not to lose any "surplus" data,
+ * and also to stick it at the end of the previously-received data
+ * (closing any holes), so that libusb reports the total amount of
+ * transferred data and presents it in a contiguous chunk.
+ */
+ if (urb->actual_length > 0) {
+ unsigned char *target = transfer->buffer + itransfer->transferred;
+ usbi_dbg("received %d bytes of surplus data", urb->actual_length);
+ if (urb->buffer != target) {
+ usbi_dbg("moving surplus data from offset %d to offset %d",
+ (unsigned char *) urb->buffer - transfer->buffer,
+ target - transfer->buffer);
+ memmove(target, urb->buffer, urb->actual_length);
+ }
+ itransfer->transferred += urb->actual_length;
+ }
+
+ if (tpriv->num_retired == tpriv->num_urbs) {
+ usbi_dbg("abnormal reap: last URB handled, reporting");
+ if (tpriv->reap_action != COMPLETED_EARLY &&
+ tpriv->reap_status == LIBUSB_TRANSFER_COMPLETED)
+ tpriv->reap_status = LIBUSB_TRANSFER_ERROR;
+ goto completed;
+ }
+ goto out_unlock;
+ }
+
+ if (urb->status == 0 || urb->status == -EREMOTEIO ||
+ (urb->status == -EOVERFLOW && urb->actual_length > 0))
+ itransfer->transferred += urb->actual_length;
+
+
+ switch (urb->status) {
+ case 0:
+ break;
+ case -EREMOTEIO: /* short transfer */
+ break;
+ case -EPIPE:
+ usbi_dbg("detected endpoint stall");
+ if (tpriv->reap_status == LIBUSB_TRANSFER_COMPLETED)
+ tpriv->reap_status = LIBUSB_TRANSFER_STALL;
+ goto cancel_remaining;
+ case -EOVERFLOW:
+ /* overflow can only ever occur in the last urb */
+ usbi_dbg("overflow, actual_length=%d", urb->actual_length);
+ if (tpriv->reap_status == LIBUSB_TRANSFER_COMPLETED)
+ tpriv->reap_status = LIBUSB_TRANSFER_OVERFLOW;
+ goto completed;
+ case -ETIME:
+ case -EPROTO:
+ case -EILSEQ:
+ /* These can happen on *any* urb of a multi-urb transfer, so
+ * save a status and tear down rest of the transfer */
+ usbi_dbg("low level error %d", urb->status);
+ tpriv->reap_action = ERROR;
+ if (tpriv->reap_status == LIBUSB_TRANSFER_COMPLETED)
+ tpriv->reap_status = LIBUSB_TRANSFER_ERROR;
+ goto cancel_remaining;
+ default:
+ usbi_warn(ITRANSFER_CTX(itransfer),
+ "unrecognised urb status %d", urb->status);
+ if (tpriv->reap_status == LIBUSB_TRANSFER_COMPLETED)
+ tpriv->reap_status = LIBUSB_TRANSFER_ERROR;
+ goto cancel_remaining;
+ }
+
+ /* if we're the last urb or we got less data than requested then we're
+ * done */
+ if (urb_idx == tpriv->num_urbs - 1) {
+ usbi_dbg("last URB in transfer --> complete!");
+ goto completed;
+ } else if (urb->actual_length < urb->buffer_length) {
+ usbi_dbg("short transfer %d/%d --> complete!",
+ urb->actual_length, urb->buffer_length);
+ if (tpriv->reap_action == NORMAL)
+ tpriv->reap_action = COMPLETED_EARLY;
+ } else
+ goto out_unlock;
+
+cancel_remaining:
+ if (tpriv->num_retired == tpriv->num_urbs) /* nothing to cancel */
+ goto completed;
+
+ /* cancel remaining urbs and wait for their completion before
+ * reporting results */
+ while (++urb_idx < tpriv->num_urbs) {
+ /* remaining URBs with continuation flag are
+ * automatically cancelled by the kernel */
+ if (tpriv->urbs[urb_idx].flags & USBFS_URB_BULK_CONTINUATION)
+ continue;
+ int tmp = ioctl(dpriv->fd, IOCTL_USBFS_DISCARDURB, &tpriv->urbs[urb_idx]);
+ if (tmp && errno != EINVAL)
+ usbi_warn(TRANSFER_CTX(transfer),
+ "unrecognised discard errno %d", errno);
+ }
+
+out_unlock:
+ usbi_mutex_unlock(&itransfer->lock);
+ return 0;
+
+completed:
+ free(tpriv->urbs);
+ tpriv->urbs = NULL;
+ usbi_mutex_unlock(&itransfer->lock);
+ return CANCELLED == tpriv->reap_action ?
+ usbi_handle_transfer_cancellation(itransfer) :
+ usbi_handle_transfer_completion(itransfer, tpriv->reap_status);
+}
+
+static int handle_iso_completion(struct usbi_transfer *itransfer,
+ struct usbfs_urb *urb)
+{
+ struct libusb_transfer *transfer =
+ __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+ int num_urbs = tpriv->num_urbs;
+ int urb_idx = 0;
+ int i;
+
+ usbi_mutex_lock(&itransfer->lock);
+ for (i = 0; i < num_urbs; i++) {
+ if (urb == tpriv->iso_urbs[i]) {
+ urb_idx = i + 1;
+ break;
+ }
+ }
+ if (urb_idx == 0) {
+ usbi_err(TRANSFER_CTX(transfer), "could not locate urb!");
+ usbi_mutex_unlock(&itransfer->lock);
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ usbi_dbg("handling completion status %d of iso urb %d/%d", urb->status,
+ urb_idx, num_urbs);
+
+ if (urb->status == 0) {
+ /* copy isochronous results back in */
+
+ for (i = 0; i < urb->number_of_packets; i++) {
+ struct usbfs_iso_packet_desc *urb_desc = &urb->iso_frame_desc[i];
+ struct libusb_iso_packet_descriptor *lib_desc =
+ &transfer->iso_packet_desc[tpriv->iso_packet_offset++];
+ lib_desc->status = urb_desc->status;
+ lib_desc->actual_length = urb_desc->actual_length;
+ }
+ }
+
+ tpriv->num_retired++;
+
+ if (tpriv->reap_action != NORMAL) { /* cancelled or submit_fail */
+ usbi_dbg("CANCEL: urb status %d", urb->status);
+
+ if (tpriv->num_retired == num_urbs) {
+ usbi_dbg("CANCEL: last URB handled, reporting");
+ free_iso_urbs(tpriv);
+ if (tpriv->reap_action == CANCELLED) {
+ usbi_mutex_unlock(&itransfer->lock);
+ return usbi_handle_transfer_cancellation(itransfer);
+ } else {
+ usbi_mutex_unlock(&itransfer->lock);
+ return usbi_handle_transfer_completion(itransfer,
+ LIBUSB_TRANSFER_ERROR);
+ }
+ }
+ goto out;
+ }
+
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ETIME:
+ case -EPROTO:
+ case -EILSEQ:
+ usbi_dbg("low-level USB error %d", urb->status);
+ break;
+ default:
+ usbi_warn(TRANSFER_CTX(transfer),
+ "unrecognised urb status %d", urb->status);
+ break;
+ }
+
+ /* if we're the last urb or we got less data than requested then we're
+ * done */
+ if (urb_idx == num_urbs) {
+ usbi_dbg("last URB in transfer --> complete!");
+ free_iso_urbs(tpriv);
+ usbi_mutex_unlock(&itransfer->lock);
+ return usbi_handle_transfer_completion(itransfer, LIBUSB_TRANSFER_COMPLETED);
+ }
+
+out:
+ usbi_mutex_unlock(&itransfer->lock);
+ return 0;
+}
+
+static int handle_control_completion(struct usbi_transfer *itransfer,
+ struct usbfs_urb *urb)
+{
+ struct linux_transfer_priv *tpriv = usbi_transfer_get_os_priv(itransfer);
+ int status;
+
+ usbi_mutex_lock(&itransfer->lock);
+ usbi_dbg("handling completion status %d", urb->status);
+
+ if (urb->status == 0)
+ itransfer->transferred += urb->actual_length;
+
+ if (tpriv->reap_action == CANCELLED) {
+ if (urb->status != 0 && urb->status != -ENOENT)
+ usbi_warn(ITRANSFER_CTX(itransfer),
+ "cancel: unrecognised urb status %d", urb->status);
+ free(tpriv->urbs);
+ tpriv->urbs = NULL;
+ usbi_mutex_unlock(&itransfer->lock);
+ return usbi_handle_transfer_cancellation(itransfer);
+ }
+
+ switch (urb->status) {
+ case 0:
+ itransfer->transferred = urb->actual_length;
+ status = LIBUSB_TRANSFER_COMPLETED;
+ break;
+ case -EPIPE:
+ usbi_dbg("unsupported control request");
+ status = LIBUSB_TRANSFER_STALL;
+ break;
+ case -ETIME:
+ case -EPROTO:
+ case -EILSEQ:
+ usbi_dbg("low-level bus error occurred");
+ status = LIBUSB_TRANSFER_ERROR;
+ break;
+ default:
+ usbi_warn(ITRANSFER_CTX(itransfer),
+ "unrecognised urb status %d", urb->status);
+ status = LIBUSB_TRANSFER_ERROR;
+ break;
+ }
+
+ free(tpriv->urbs);
+ tpriv->urbs = NULL;
+ usbi_mutex_unlock(&itransfer->lock);
+ return usbi_handle_transfer_completion(itransfer, status);
+}
+
+static int reap_for_handle(struct libusb_device_handle *handle)
+{
+ struct linux_device_handle_priv *hpriv = __device_handle_priv(handle);
+ int r;
+ struct usbfs_urb *urb;
+ struct usbi_transfer *itransfer;
+ struct libusb_transfer *transfer;
+
+ r = ioctl(hpriv->fd, IOCTL_USBFS_REAPURBNDELAY, &urb);
+ if (r == -1 && errno == EAGAIN)
+ return 1;
+ if (r < 0) {
+ if (errno == ENODEV)
+ return LIBUSB_ERROR_NO_DEVICE;
+
+ usbi_err(HANDLE_CTX(handle), "reap failed error %d errno=%d",
+ r, errno);
+ return LIBUSB_ERROR_IO;
+ }
+
+ itransfer = urb->usercontext;
+ transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+
+ usbi_dbg("urb type=%d status=%d transferred=%d", urb->type, urb->status,
+ urb->actual_length);
+
+ switch (transfer->type) {
+ case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+ return handle_iso_completion(itransfer, urb);
+ case LIBUSB_TRANSFER_TYPE_BULK:
+ case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+ return handle_bulk_completion(itransfer, urb);
+ case LIBUSB_TRANSFER_TYPE_CONTROL:
+ return handle_control_completion(itransfer, urb);
+ default:
+ usbi_err(HANDLE_CTX(handle), "unrecognised endpoint type %x",
+ transfer->type);
+ return LIBUSB_ERROR_OTHER;
+ }
+}
+
+static int op_handle_events(struct libusb_context *ctx,
+ struct pollfd *fds, nfds_t nfds, int num_ready)
+{
+ int r;
+ int i = 0;
+
+ usbi_mutex_lock(&ctx->open_devs_lock);
+ for (i = 0; i < nfds && num_ready > 0; i++) {
+ struct pollfd *pollfd = &fds[i];
+ struct libusb_device_handle *handle;
+ struct linux_device_handle_priv *hpriv = NULL;
+
+ if (!pollfd->revents)
+ continue;
+
+ num_ready--;
+ list_for_each_entry(handle, &ctx->open_devs, list, struct libusb_device_handle) {
+ hpriv = __device_handle_priv(handle);
+ if (hpriv->fd == pollfd->fd)
+ break;
+ }
+
+ if (pollfd->revents & POLLERR) {
+ usbi_remove_pollfd(HANDLE_CTX(handle), hpriv->fd);
+ usbi_handle_disconnect(handle);
+ continue;
+ }
+
+ r = reap_for_handle(handle);
+ if (r == 1 || r == LIBUSB_ERROR_NO_DEVICE)
+ continue;
+ else if (r < 0)
+ goto out;
+ }
+
+ r = 0;
+out:
+ usbi_mutex_unlock(&ctx->open_devs_lock);
+ return r;
+}
+
+static int op_clock_gettime(int clk_id, struct timespec *tp)
+{
+ switch (clk_id) {
+ case USBI_CLOCK_MONOTONIC:
+ return clock_gettime(monotonic_clkid, tp);
+ case USBI_CLOCK_REALTIME:
+ return clock_gettime(CLOCK_REALTIME, tp);
+ default:
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+}
+
+#ifdef USBI_TIMERFD_AVAILABLE
+static clockid_t op_get_timerfd_clockid(void)
+{
+ return monotonic_clkid;
+
+}
+#endif
+
+const struct usbi_os_backend linux_usbfs_backend = {
+ .name = "Linux usbfs",
+ .init = op_init,
+ .exit = NULL,
+ .get_device_list = op_get_device_list,
+ .get_device_descriptor = op_get_device_descriptor,
+ .get_active_config_descriptor = op_get_active_config_descriptor,
+ .get_config_descriptor = op_get_config_descriptor,
+
+ .open = op_open,
+ .close = op_close,
+ .get_configuration = op_get_configuration,
+ .set_configuration = op_set_configuration,
+ .claim_interface = op_claim_interface,
+ .release_interface = op_release_interface,
+
+ .set_interface_altsetting = op_set_interface,
+ .clear_halt = op_clear_halt,
+ .reset_device = op_reset_device,
+
+ .kernel_driver_active = op_kernel_driver_active,
+ .detach_kernel_driver = op_detach_kernel_driver,
+ .attach_kernel_driver = op_attach_kernel_driver,
+
+ .destroy_device = op_destroy_device,
+
+ .submit_transfer = op_submit_transfer,
+ .cancel_transfer = op_cancel_transfer,
+ .clear_transfer_priv = op_clear_transfer_priv,
+
+ .handle_events = op_handle_events,
+
+ .clock_gettime = op_clock_gettime,
+
+#ifdef USBI_TIMERFD_AVAILABLE
+ .get_timerfd_clockid = op_get_timerfd_clockid,
+#endif
+
+ .device_priv_size = sizeof(struct linux_device_priv),
+ .device_handle_priv_size = sizeof(struct linux_device_handle_priv),
+ .transfer_priv_size = sizeof(struct linux_transfer_priv),
+ .add_iso_packet_size = 0,
+};
+
diff --git a/libusb-1.0/libusb/os/linux_usbfs.h b/libusb-1.0/libusb/os/linux_usbfs.h
new file mode 100644
index 0000000..bd02edc
--- /dev/null
+++ b/libusb-1.0/libusb/os/linux_usbfs.h
@@ -0,0 +1,138 @@
+/*
+ * usbfs header structures
+ * Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
+ * Copyright (c) 2001 Johannes Erdfelt <johannes@erdfelt.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __LIBUSB_USBFS_H__
+#define __LIBUSB_USBFS_H__
+
+#define SYSFS_DEVICE_PATH "/sys/bus/usb/devices"
+
+struct usbfs_ctrltransfer {
+ /* keep in sync with usbdevice_fs.h:usbdevfs_ctrltransfer */
+ uint8_t bmRequestType;
+ uint8_t bRequest;
+ uint16_t wValue;
+ uint16_t wIndex;
+ uint16_t wLength;
+
+ uint32_t timeout; /* in milliseconds */
+
+ /* pointer to data */
+ void *data;
+};
+
+struct usbfs_bulktransfer {
+ /* keep in sync with usbdevice_fs.h:usbdevfs_bulktransfer */
+ unsigned int ep;
+ unsigned int len;
+ unsigned int timeout; /* in milliseconds */
+
+ /* pointer to data */
+ void *data;
+};
+
+struct usbfs_setinterface {
+ /* keep in sync with usbdevice_fs.h:usbdevfs_setinterface */
+ unsigned int interface;
+ unsigned int altsetting;
+};
+
+#define USBFS_MAXDRIVERNAME 255
+
+struct usbfs_getdriver {
+ unsigned int interface;
+ char driver[USBFS_MAXDRIVERNAME + 1];
+};
+
+#define USBFS_URB_SHORT_NOT_OK 0x01
+#define USBFS_URB_ISO_ASAP 0x02
+#define USBFS_URB_BULK_CONTINUATION 0x04
+#define USBFS_URB_QUEUE_BULK 0x10
+
+enum usbfs_urb_type {
+ USBFS_URB_TYPE_ISO = 0,
+ USBFS_URB_TYPE_INTERRUPT = 1,
+ USBFS_URB_TYPE_CONTROL = 2,
+ USBFS_URB_TYPE_BULK = 3,
+};
+
+struct usbfs_iso_packet_desc {
+ unsigned int length;
+ unsigned int actual_length;
+ unsigned int status;
+};
+
+#define MAX_ISO_BUFFER_LENGTH 32768
+#define MAX_BULK_BUFFER_LENGTH 16384
+#define MAX_CTRL_BUFFER_LENGTH 4096
+
+struct usbfs_urb {
+ unsigned char type;
+ unsigned char endpoint;
+ int status;
+ unsigned int flags;
+ void *buffer;
+ int buffer_length;
+ int actual_length;
+ int start_frame;
+ int number_of_packets;
+ int error_count;
+ unsigned int signr;
+ void *usercontext;
+ struct usbfs_iso_packet_desc iso_frame_desc[0];
+};
+
+struct usbfs_connectinfo {
+ unsigned int devnum;
+ unsigned char slow;
+};
+
+struct usbfs_ioctl {
+ int ifno; /* interface 0..N ; negative numbers reserved */
+ int ioctl_code; /* MUST encode size + direction of data so the
+ * macros in <asm/ioctl.h> give correct values */
+ void *data; /* param buffer (in, or out) */
+};
+
+struct usbfs_hub_portinfo {
+ unsigned char numports;
+ unsigned char port[127]; /* port to device num mapping */
+};
+
+#define IOCTL_USBFS_CONTROL _IOWR('U', 0, struct usbfs_ctrltransfer)
+#define IOCTL_USBFS_BULK _IOWR('U', 2, struct usbfs_bulktransfer)
+#define IOCTL_USBFS_RESETEP _IOR('U', 3, unsigned int)
+#define IOCTL_USBFS_SETINTF _IOR('U', 4, struct usbfs_setinterface)
+#define IOCTL_USBFS_SETCONFIG _IOR('U', 5, unsigned int)
+#define IOCTL_USBFS_GETDRIVER _IOW('U', 8, struct usbfs_getdriver)
+#define IOCTL_USBFS_SUBMITURB _IOR('U', 10, struct usbfs_urb)
+#define IOCTL_USBFS_DISCARDURB _IO('U', 11)
+#define IOCTL_USBFS_REAPURB _IOW('U', 12, void *)
+#define IOCTL_USBFS_REAPURBNDELAY _IOW('U', 13, void *)
+#define IOCTL_USBFS_CLAIMINTF _IOR('U', 15, unsigned int)
+#define IOCTL_USBFS_RELEASEINTF _IOR('U', 16, unsigned int)
+#define IOCTL_USBFS_CONNECTINFO _IOW('U', 17, struct usbfs_connectinfo)
+#define IOCTL_USBFS_IOCTL _IOWR('U', 18, struct usbfs_ioctl)
+#define IOCTL_USBFS_HUB_PORTINFO _IOR('U', 19, struct usbfs_hub_portinfo)
+#define IOCTL_USBFS_RESET _IO('U', 20)
+#define IOCTL_USBFS_CLEAR_HALT _IOR('U', 21, unsigned int)
+#define IOCTL_USBFS_DISCONNECT _IO('U', 22)
+#define IOCTL_USBFS_CONNECT _IO('U', 23)
+
+#endif
diff --git a/libusb-1.0/libusb/os/poll_posix.h b/libusb-1.0/libusb/os/poll_posix.h
new file mode 100644
index 0000000..17298a5
--- /dev/null
+++ b/libusb-1.0/libusb/os/poll_posix.h
@@ -0,0 +1,12 @@
+#ifndef __LIBUSB_POLL_POSIX_H__
+#define __LIBUSB_POLL_POSIX_H__
+
+#include <unistd.h>
+#include <poll.h>
+#define usbi_write write
+#define usbi_read read
+#define usbi_close close
+#define usbi_pipe pipe
+#define usbi_poll poll
+
+#endif /* __LIBUSB_POLL_POSIX_H__ */
diff --git a/libusb-1.0/libusb/os/poll_windows.c b/libusb-1.0/libusb/os/poll_windows.c
new file mode 100644
index 0000000..55dbc18
--- /dev/null
+++ b/libusb-1.0/libusb/os/poll_windows.c
@@ -0,0 +1,857 @@
+/*
+ * poll_windows: poll compatibility wrapper for Windows
+ * Copyright (C) 2009-2010 Pete Batard <pbatard@gmail.com>
+ * With contributions from Michael Plante, Orin Eman et al.
+ * Parts of poll implementation from libusb-win32, by Stephan Meyer et al.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+/*
+ * poll() and pipe() Windows compatibility layer for libusb 1.0
+ *
+ * The way this layer works is by using OVERLAPPED with async I/O transfers, as
+ * OVERLAPPED have an associated event which is flagged for I/O completion.
+ *
+ * For USB pollable async I/O, you would typically:
+ * - obtain a Windows HANDLE to a file or device that has been opened in
+ * OVERLAPPED mode
+ * - call usbi_create_fd with this handle to obtain a custom fd.
+ * Note that if you need simultaneous R/W access, you need to call create_fd
+ * twice, once in _O_RDONLY and once in _O_WRONLY mode to obtain 2 separate
+ * pollable fds
+ * - leave the core functions call the poll routine and flag POLLIN/POLLOUT
+ *
+ * The pipe pollable synchronous I/O works using the overlapped event associated
+ * with a fake pipe. The read/write functions are only meant to be used in that
+ * context.
+ */
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <io.h>
+
+#include <libusbi.h>
+
+// Uncomment to debug the polling layer
+//#define DEBUG_POLL_WINDOWS
+#if defined(DEBUG_POLL_WINDOWS)
+#define poll_dbg usbi_dbg
+#else
+// MSVC6 cannot use a variadic argument and non MSVC
+// compilers produce warnings if parenthesis are ommitted.
+#if defined(_MSC_VER)
+#define poll_dbg
+#else
+#define poll_dbg(...)
+#endif
+#endif
+
+#if defined(_PREFAST_)
+#pragma warning(disable:28719)
+#endif
+
+#if defined(__CYGWIN__)
+// cygwin produces a warning unless these prototypes are defined
+extern int _open(char* name, int flags);
+extern int _close(int fd);
+extern int _snprintf(char *buffer, size_t count, const char *format, ...);
+#define NUL_DEVICE "/dev/null"
+#else
+#define NUL_DEVICE "NUL"
+#endif
+
+#define CHECK_INIT_POLLING do {if(!is_polling_set) init_polling();} while(0)
+
+// Workaround for MinGW-w64 multilib bug
+#if defined(_MSC_VER) || defined(_WIN64)
+#define INIT_INTERLOCKEDEXCHANGE
+#define pInterlockedExchange InterlockedExchange
+#else
+static LONG (WINAPI *pInterlockedExchange)(LONG volatile *, LONG) = NULL;
+#define INIT_INTERLOCKEDEXCHANGE if (pInterlockedExchange == NULL) { \
+ pInterlockedExchange = (LONG (WINAPI *)(LONG volatile *, LONG)) \
+ GetProcAddress(GetModuleHandle("KERNEL32"), "InterlockedExchange"); \
+ if (pInterlockedExchange == NULL) { \
+ usbi_err(NULL, "InterlockedExchange is unavailable"); \
+ return; \
+ } \
+}
+#endif
+
+// public fd data
+const struct winfd INVALID_WINFD = {-1, INVALID_HANDLE_VALUE, NULL, RW_NONE};
+struct winfd poll_fd[MAX_FDS];
+// internal fd data
+struct {
+ CRITICAL_SECTION mutex; // lock for fds
+ // Additional variables for XP CancelIoEx partial emulation
+ HANDLE original_handle;
+ DWORD thread_id;
+} _poll_fd[MAX_FDS];
+
+// globals
+BOOLEAN is_polling_set = FALSE;
+#if defined(DYNAMIC_FDS)
+HANDLE fd_update = INVALID_HANDLE_VALUE; // event to notify poll of fd update
+HANDLE new_fd[MAX_FDS]; // overlapped event handles for fds created since last poll
+unsigned nb_new_fds = 0; // nb new fds created since last poll
+usbi_mutex_t new_fd_mutex; // mutex required for the above
+#endif
+LONG pipe_number = 0;
+static volatile LONG compat_spinlock = 0;
+
+// CancelIoEx, available on Vista and later only, provides the ability to cancel
+// a single transfer (OVERLAPPED) when used. As it may not be part of any of the
+// platform headers, we hook into the Kernel32 system DLL directly to seek it.
+static BOOL (__stdcall *pCancelIoEx)(HANDLE, LPOVERLAPPED) = NULL;
+#define CancelIoEx_Available (pCancelIoEx != NULL)
+__inline BOOL cancel_io(int _index)
+{
+ if ((_index < 0) || (_index >= MAX_FDS)) {
+ return FALSE;
+ }
+
+ if ( (poll_fd[_index].fd < 0) || (poll_fd[_index].handle == INVALID_HANDLE_VALUE)
+ || (poll_fd[_index].handle == 0) || (poll_fd[_index].overlapped == NULL) ) {
+ return TRUE;
+ }
+ if (CancelIoEx_Available) {
+ return (*pCancelIoEx)(poll_fd[_index].handle, poll_fd[_index].overlapped);
+ }
+ if (_poll_fd[_index].thread_id == GetCurrentThreadId()) {
+ return CancelIo(poll_fd[_index].handle);
+ }
+ usbi_warn(NULL, "Unable to cancel I/O that was started from another thread");
+ return FALSE;
+}
+
+// Init
+void init_polling(void)
+{
+ int i;
+
+ INIT_INTERLOCKEDEXCHANGE;
+ while (pInterlockedExchange((LONG *)&compat_spinlock, 1) == 1) {
+ SleepEx(0, TRUE);
+ }
+ if (!is_polling_set) {
+ pCancelIoEx = (BOOL (__stdcall *)(HANDLE,LPOVERLAPPED))
+ GetProcAddress(GetModuleHandleA("KERNEL32"), "CancelIoEx");
+ usbi_dbg("Will use CancelIo%s for I/O cancellation",
+ CancelIoEx_Available?"Ex":"");
+ for (i=0; i<MAX_FDS; i++) {
+ poll_fd[i] = INVALID_WINFD;
+ _poll_fd[i].original_handle = INVALID_HANDLE_VALUE;
+ _poll_fd[i].thread_id = 0;
+ InitializeCriticalSection(&_poll_fd[i].mutex);
+ }
+#if defined(DYNAMIC_FDS)
+ // We need to create an update event so that poll is warned when there
+ // are new/deleted fds during a timeout wait operation
+ fd_update = CreateEvent(NULL, TRUE, FALSE, NULL);
+ if (fd_update == NULL) {
+ usbi_err(NULL, "unable to create update event");
+ }
+ usbi_mutex_init(&new_fd_mutex, NULL);
+ nb_new_fds = 0;
+#endif
+ is_polling_set = TRUE;
+ }
+ compat_spinlock = 0;
+}
+
+// Internal function to retrieve the table index (and lock the fd mutex)
+int _fd_to_index_and_lock(int fd)
+{
+ int i;
+
+ if (fd <= 0)
+ return -1;
+
+ for (i=0; i<MAX_FDS; i++) {
+ if (poll_fd[i].fd == fd) {
+ EnterCriticalSection(&_poll_fd[i].mutex);
+ // fd might have changed before we got to critical
+ if (poll_fd[i].fd != fd) {
+ LeaveCriticalSection(&_poll_fd[i].mutex);
+ continue;
+ }
+ return i;
+ }
+ }
+ return -1;
+}
+
+OVERLAPPED *create_overlapped(void)
+{
+ OVERLAPPED *overlapped = calloc(1, sizeof(OVERLAPPED));
+ if (overlapped == NULL) {
+ return NULL;
+ }
+ overlapped->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+ if(overlapped->hEvent == NULL) {
+ free (overlapped);
+ return NULL;
+ }
+ return overlapped;
+}
+
+void free_overlapped(OVERLAPPED *overlapped)
+{
+ if (overlapped == NULL)
+ return;
+
+ if ( (overlapped->hEvent != 0)
+ && (overlapped->hEvent != INVALID_HANDLE_VALUE) ) {
+ CloseHandle(overlapped->hEvent);
+ }
+ free(overlapped);
+}
+
+void reset_overlapped(OVERLAPPED *overlapped)
+{
+ HANDLE event_handle;
+ if (overlapped == NULL)
+ return;
+
+ event_handle = overlapped->hEvent;
+ if (event_handle != NULL) {
+ ResetEvent(event_handle);
+ }
+ memset(overlapped, 0, sizeof(OVERLAPPED));
+ overlapped->hEvent = event_handle;
+}
+
+void exit_polling(void)
+{
+ int i;
+
+ INIT_INTERLOCKEDEXCHANGE;
+ while (pInterlockedExchange((LONG *)&compat_spinlock, 1) == 1) {
+ SleepEx(0, TRUE);
+ }
+ if (is_polling_set) {
+ is_polling_set = FALSE;
+
+ for (i=0; i<MAX_FDS; i++) {
+ // Cancel any async I/O (handle can be invalid)
+ cancel_io(i);
+ // If anything was pending on that I/O, it should be
+ // terminating, and we should be able to access the fd
+ // mutex lock before too long
+ EnterCriticalSection(&_poll_fd[i].mutex);
+ if ( (poll_fd[i].fd > 0) && (poll_fd[i].handle != INVALID_HANDLE_VALUE) && (poll_fd[i].handle != 0)
+ && (GetFileType(poll_fd[i].handle) == FILE_TYPE_UNKNOWN) ) {
+ _close(poll_fd[i].fd);
+ }
+ free_overlapped(poll_fd[i].overlapped);
+ if (!CancelIoEx_Available) {
+ // Close duplicate handle
+ if (_poll_fd[i].original_handle != INVALID_HANDLE_VALUE) {
+ CloseHandle(poll_fd[i].handle);
+ }
+ }
+ poll_fd[i] = INVALID_WINFD;
+#if defined(DYNAMIC_FDS)
+ usbi_mutex_destroy(&new_fd_mutex);
+ CloseHandle(fd_update);
+ fd_update = INVALID_HANDLE_VALUE;
+#endif
+ LeaveCriticalSection(&_poll_fd[i].mutex);
+ DeleteCriticalSection(&_poll_fd[i].mutex);
+ }
+ }
+ compat_spinlock = 0;
+}
+
+/*
+ * Create a fake pipe.
+ * As libusb only uses pipes for signaling, all we need from a pipe is an
+ * event. To that extent, we create a single wfd and overlapped as a means
+ * to access that event.
+ */
+int usbi_pipe(int filedes[2])
+{
+ int i;
+ OVERLAPPED* overlapped;
+
+ CHECK_INIT_POLLING;
+
+ overlapped = calloc(1, sizeof(OVERLAPPED));
+ if (overlapped == NULL) {
+ return -1;
+ }
+ // The overlapped must have status pending for signaling to work in poll
+ overlapped->Internal = STATUS_PENDING;
+ overlapped->InternalHigh = 0;
+
+ // Read end of the "pipe"
+ filedes[0] = _open(NUL_DEVICE, _O_WRONLY);
+ if (filedes[0] < 0) {
+ usbi_err(NULL, "could not create pipe: errno %d", errno);
+ goto out1;
+ }
+ // We can use the same handle for both ends
+ filedes[1] = filedes[0];
+ poll_dbg("pipe filedes = %d", filedes[0]);
+
+ // Note: manual reset must be true (second param) as the reset occurs in read
+ overlapped->hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+ if(!overlapped->hEvent) {
+ goto out2;
+ }
+
+ for (i=0; i<MAX_FDS; i++) {
+ if (poll_fd[i].fd < 0) {
+ EnterCriticalSection(&_poll_fd[i].mutex);
+ // fd might have been allocated before we got to critical
+ if (poll_fd[i].fd >= 0) {
+ LeaveCriticalSection(&_poll_fd[i].mutex);
+ continue;
+ }
+
+ poll_fd[i].fd = filedes[0];
+ poll_fd[i].handle = DUMMY_HANDLE;
+ poll_fd[i].overlapped = overlapped;
+ // There's no polling on the write end, so we just use READ for our needs
+ poll_fd[i].rw = RW_READ;
+ _poll_fd[i].original_handle = INVALID_HANDLE_VALUE;
+ LeaveCriticalSection(&_poll_fd[i].mutex);
+ return 0;
+ }
+ }
+
+ CloseHandle(overlapped->hEvent);
+out2:
+ _close(filedes[0]);
+out1:
+ free(overlapped);
+ return -1;
+}
+
+/*
+ * Create both an fd and an OVERLAPPED from an open Windows handle, so that
+ * it can be used with our polling function
+ * The handle MUST support overlapped transfers (usually requires CreateFile
+ * with FILE_FLAG_OVERLAPPED)
+ * Return a pollable file descriptor struct, or INVALID_WINFD on error
+ *
+ * Note that the fd returned by this function is a per-transfer fd, rather
+ * than a per-session fd and cannot be used for anything else but our
+ * custom functions (the fd itself points to the NUL: device)
+ * if you plan to do R/W on the same handle, you MUST create 2 fds: one for
+ * read and one for write. Using a single R/W fd is unsupported and will
+ * produce unexpected results
+ */
+struct winfd usbi_create_fd(HANDLE handle, int access_mode)
+{
+ int i, fd;
+ struct winfd wfd = INVALID_WINFD;
+ OVERLAPPED* overlapped = NULL;
+
+ CHECK_INIT_POLLING;
+
+ if ((handle == 0) || (handle == INVALID_HANDLE_VALUE)) {
+ return INVALID_WINFD;
+ }
+
+ if ((access_mode != _O_RDONLY) && (access_mode != _O_WRONLY)) {
+ usbi_warn(NULL, "only one of _O_RDONLY or _O_WRONLY are supported.\n"
+ "If you want to poll for R/W simultaneously, create multiple fds from the same handle.");
+ return INVALID_WINFD;
+ }
+ if (access_mode == _O_RDONLY) {
+ wfd.rw = RW_READ;
+ } else {
+ wfd.rw = RW_WRITE;
+ }
+
+ // Ensure that we get a non system conflicting unique fd, using
+ // the same fd attribution system as the pipe ends
+ fd = _open(NUL_DEVICE, _O_WRONLY);
+ if (fd < 0) {
+ return INVALID_WINFD;
+ }
+
+ overlapped = create_overlapped();
+ if(overlapped == NULL) {
+ _close(fd);
+ return INVALID_WINFD;
+ }
+
+ for (i=0; i<MAX_FDS; i++) {
+ if (poll_fd[i].fd < 0) {
+ EnterCriticalSection(&_poll_fd[i].mutex);
+ // fd might have been removed before we got to critical
+ if (poll_fd[i].fd >= 0) {
+ LeaveCriticalSection(&_poll_fd[i].mutex);
+ continue;
+ }
+ wfd.fd = fd;
+ // Attempt to emulate some of the CancelIoEx behaviour on platforms
+ // that don't have it
+ if (!CancelIoEx_Available) {
+ _poll_fd[i].thread_id = GetCurrentThreadId();
+ if (!DuplicateHandle(GetCurrentProcess(), handle, GetCurrentProcess(),
+ &wfd.handle, 0, TRUE, DUPLICATE_SAME_ACCESS)) {
+ usbi_dbg("could not duplicate handle for CancelIo - using original one");
+ wfd.handle = handle;
+ // Make sure we won't close the original handle on fd deletion then
+ _poll_fd[i].original_handle = INVALID_HANDLE_VALUE;
+ } else {
+ _poll_fd[i].original_handle = handle;
+ }
+ } else {
+ wfd.handle = handle;
+ }
+ wfd.overlapped = overlapped;
+ memcpy(&poll_fd[i], &wfd, sizeof(struct winfd));
+ LeaveCriticalSection(&_poll_fd[i].mutex);
+#if defined(DYNAMIC_FDS)
+ usbi_mutex_lock(&new_fd_mutex);
+ new_fd[nb_new_fds++] = overlapped->hEvent;
+ usbi_mutex_unlock(&new_fd_mutex);
+ // Notify poll that fds have been updated
+ SetEvent(fd_update);
+#endif
+ return wfd;
+ }
+ }
+ free_overlapped(overlapped);
+ _close(fd);
+ return INVALID_WINFD;
+}
+
+void _free_index(int _index)
+{
+ // Cancel any async IO (Don't care about the validity of our handles for this)
+ cancel_io(_index);
+ // close fake handle for devices
+ if ( (poll_fd[_index].handle != INVALID_HANDLE_VALUE) && (poll_fd[_index].handle != 0)
+ && (GetFileType(poll_fd[_index].handle) == FILE_TYPE_UNKNOWN) ) {
+ _close(poll_fd[_index].fd);
+ }
+ // close the duplicate handle (if we have an actual duplicate)
+ if (!CancelIoEx_Available) {
+ if (_poll_fd[_index].original_handle != INVALID_HANDLE_VALUE) {
+ CloseHandle(poll_fd[_index].handle);
+ }
+ _poll_fd[_index].original_handle = INVALID_HANDLE_VALUE;
+ _poll_fd[_index].thread_id = 0;
+ }
+ free_overlapped(poll_fd[_index].overlapped);
+ poll_fd[_index] = INVALID_WINFD;
+}
+
+/*
+ * Release a pollable file descriptor.
+ *
+ * Note that the associated Windows handle is not closed by this call
+ */
+void usbi_free_fd(int fd)
+{
+ int _index;
+
+ CHECK_INIT_POLLING;
+
+ _index = _fd_to_index_and_lock(fd);
+ if (_index < 0) {
+ return;
+ }
+ _free_index(_index);
+ LeaveCriticalSection(&_poll_fd[_index].mutex);
+}
+
+/*
+ * The functions below perform various conversions between fd, handle and OVERLAPPED
+ */
+struct winfd fd_to_winfd(int fd)
+{
+ int i;
+ struct winfd wfd;
+
+ CHECK_INIT_POLLING;
+
+ if (fd <= 0)
+ return INVALID_WINFD;
+
+ for (i=0; i<MAX_FDS; i++) {
+ if (poll_fd[i].fd == fd) {
+ EnterCriticalSection(&_poll_fd[i].mutex);
+ // fd might have been deleted before we got to critical
+ if (poll_fd[i].fd != fd) {
+ LeaveCriticalSection(&_poll_fd[i].mutex);
+ continue;
+ }
+ memcpy(&wfd, &poll_fd[i], sizeof(struct winfd));
+ LeaveCriticalSection(&_poll_fd[i].mutex);
+ return wfd;
+ }
+ }
+ return INVALID_WINFD;
+}
+
+struct winfd handle_to_winfd(HANDLE handle)
+{
+ int i;
+ struct winfd wfd;
+
+ CHECK_INIT_POLLING;
+
+ if ((handle == 0) || (handle == INVALID_HANDLE_VALUE))
+ return INVALID_WINFD;
+
+ for (i=0; i<MAX_FDS; i++) {
+ if (poll_fd[i].handle == handle) {
+ EnterCriticalSection(&_poll_fd[i].mutex);
+ // fd might have been deleted before we got to critical
+ if (poll_fd[i].handle != handle) {
+ LeaveCriticalSection(&_poll_fd[i].mutex);
+ continue;
+ }
+ memcpy(&wfd, &poll_fd[i], sizeof(struct winfd));
+ LeaveCriticalSection(&_poll_fd[i].mutex);
+ return wfd;
+ }
+ }
+ return INVALID_WINFD;
+}
+
+struct winfd overlapped_to_winfd(OVERLAPPED* overlapped)
+{
+ int i;
+ struct winfd wfd;
+
+ CHECK_INIT_POLLING;
+
+ if (overlapped == NULL)
+ return INVALID_WINFD;
+
+ for (i=0; i<MAX_FDS; i++) {
+ if (poll_fd[i].overlapped == overlapped) {
+ EnterCriticalSection(&_poll_fd[i].mutex);
+ // fd might have been deleted before we got to critical
+ if (poll_fd[i].overlapped != overlapped) {
+ LeaveCriticalSection(&_poll_fd[i].mutex);
+ continue;
+ }
+ memcpy(&wfd, &poll_fd[i], sizeof(struct winfd));
+ LeaveCriticalSection(&_poll_fd[i].mutex);
+ return wfd;
+ }
+ }
+ return INVALID_WINFD;
+}
+
+/*
+ * POSIX poll equivalent, using Windows OVERLAPPED
+ * Currently, this function only accepts one of POLLIN or POLLOUT per fd
+ * (but you can create multiple fds from the same handle for read and write)
+ */
+int usbi_poll(struct pollfd *fds, unsigned int nfds, int timeout)
+{
+ unsigned i;
+ int _index, object_index, triggered;
+ HANDLE *handles_to_wait_on;
+ int *handle_to_index;
+ DWORD nb_handles_to_wait_on = 0;
+ DWORD ret;
+
+#if defined(DYNAMIC_FDS)
+ DWORD nb_extra_handles = 0;
+ unsigned j;
+
+ // To address the possibility of missing new fds between the time the new
+ // pollable fd set is assembled, and the ResetEvent() call below, an
+ // additional new_fd[] HANDLE table is used for any new fd that was created
+ // since the last call to poll (see below)
+ ResetEvent(fd_update);
+
+ // At this stage, any new fd creation will be detected through the fd_update
+ // event notification, and any previous creation that we may have missed
+ // will be picked up through the existing new_fd[] table.
+#endif
+
+ CHECK_INIT_POLLING;
+
+ triggered = 0;
+ handles_to_wait_on = malloc((nfds+1)*sizeof(HANDLE)); // +1 for fd_update
+ handle_to_index = malloc(nfds*sizeof(int));
+ if ((handles_to_wait_on == NULL) || (handle_to_index == NULL)) {
+ errno = ENOMEM;
+ triggered = -1;
+ goto poll_exit;
+ }
+
+ for (i = 0; i < nfds; ++i) {
+ fds[i].revents = 0;
+
+ // Only one of POLLIN or POLLOUT can be selected with this version of poll (not both)
+ if ((fds[i].events & ~POLLIN) && (!(fds[i].events & POLLOUT))) {
+ fds[i].revents |= POLLERR;
+ errno = EACCES;
+ usbi_warn(NULL, "unsupported set of events");
+ triggered = -1;
+ goto poll_exit;
+ }
+
+ _index = _fd_to_index_and_lock(fds[i].fd);
+ poll_dbg("fd[%d]=%d: (overlapped=%p) got events %04X", i, poll_fd[_index].fd, poll_fd[_index].overlapped, fds[i].events);
+
+ if ( (_index < 0) || (poll_fd[_index].handle == INVALID_HANDLE_VALUE)
+ || (poll_fd[_index].handle == 0) || (poll_fd[_index].overlapped == NULL)) {
+ fds[i].revents |= POLLNVAL | POLLERR;
+ errno = EBADF;
+ if (_index >= 0) {
+ LeaveCriticalSection(&_poll_fd[_index].mutex);
+ }
+ usbi_warn(NULL, "invalid fd");
+ triggered = -1;
+ goto poll_exit;
+ }
+
+ // IN or OUT must match our fd direction
+ if ((fds[i].events & POLLIN) && (poll_fd[_index].rw != RW_READ)) {
+ fds[i].revents |= POLLNVAL | POLLERR;
+ errno = EBADF;
+ usbi_warn(NULL, "attempted POLLIN on fd without READ access");
+ LeaveCriticalSection(&_poll_fd[_index].mutex);
+ triggered = -1;
+ goto poll_exit;
+ }
+
+ if ((fds[i].events & POLLOUT) && (poll_fd[_index].rw != RW_WRITE)) {
+ fds[i].revents |= POLLNVAL | POLLERR;
+ errno = EBADF;
+ usbi_warn(NULL, "attempted POLLOUT on fd without WRITE access");
+ LeaveCriticalSection(&_poll_fd[_index].mutex);
+ triggered = -1;
+ goto poll_exit;
+ }
+
+ // The following macro only works if overlapped I/O was reported pending
+ if ( (HasOverlappedIoCompleted(poll_fd[_index].overlapped))
+ || (HasOverlappedIoCompletedSync(poll_fd[_index].overlapped)) ) {
+ poll_dbg(" completed");
+ // checks above should ensure this works:
+ fds[i].revents = fds[i].events;
+ triggered++;
+ } else {
+ handles_to_wait_on[nb_handles_to_wait_on] = poll_fd[_index].overlapped->hEvent;
+ handle_to_index[nb_handles_to_wait_on] = i;
+#if defined(DYNAMIC_FDS)
+ // If this fd from the poll set is also part of the new_fd event handle table, remove it
+ usbi_mutex_lock(&new_fd_mutex);
+ for (j=0; j<nb_new_fds; j++) {
+ if (handles_to_wait_on[nb_handles_to_wait_on] == new_fd[j]) {
+ new_fd[j] = INVALID_HANDLE_VALUE;
+ break;
+ }
+ }
+ usbi_mutex_unlock(&new_fd_mutex);
+#endif
+ nb_handles_to_wait_on++;
+ }
+ LeaveCriticalSection(&_poll_fd[_index].mutex);
+ }
+#if defined(DYNAMIC_FDS)
+ // At this stage, new_fd[] should only contain events from fds that
+ // have been added since the last call to poll, but are not (yet) part
+ // of the pollable fd set. Typically, these would be from fds that have
+ // been created between the construction of the fd set and the calling
+ // of poll.
+ // Event if we won't be able to return usable poll data on these events,
+ // make sure we monitor them to return an EINTR code
+ usbi_mutex_lock(&new_fd_mutex); // We could probably do without
+ for (i=0; i<nb_new_fds; i++) {
+ if (new_fd[i] != INVALID_HANDLE_VALUE) {
+ handles_to_wait_on[nb_handles_to_wait_on++] = new_fd[i];
+ nb_extra_handles++;
+ }
+ }
+ usbi_mutex_unlock(&new_fd_mutex);
+ poll_dbg("dynamic_fds: added %d extra handles", nb_extra_handles);
+#endif
+
+ // If nothing was triggered, wait on all fds that require it
+ if ((timeout != 0) && (triggered == 0) && (nb_handles_to_wait_on != 0)) {
+#if defined(DYNAMIC_FDS)
+ // Register for fd update notifications
+ handles_to_wait_on[nb_handles_to_wait_on++] = fd_update;
+ nb_extra_handles++;
+#endif
+ if (timeout < 0) {
+ poll_dbg("starting infinite wait for %d handles...", (int)nb_handles_to_wait_on);
+ } else {
+ poll_dbg("starting %d ms wait for %d handles...", timeout, (int)nb_handles_to_wait_on);
+ }
+ ret = WaitForMultipleObjects(nb_handles_to_wait_on, handles_to_wait_on,
+ FALSE, (timeout<0)?INFINITE:(DWORD)timeout);
+ object_index = ret-WAIT_OBJECT_0;
+ if ((object_index >= 0) && ((DWORD)object_index < nb_handles_to_wait_on)) {
+#if defined(DYNAMIC_FDS)
+ if ((DWORD)object_index >= (nb_handles_to_wait_on-nb_extra_handles)) {
+ // Detected fd update => flag a poll interruption
+ if ((DWORD)object_index == (nb_handles_to_wait_on-1))
+ poll_dbg(" dynamic_fds: fd_update event");
+ else
+ poll_dbg(" dynamic_fds: new fd I/O event");
+ errno = EINTR;
+ triggered = -1;
+ goto poll_exit;
+ }
+#endif
+ poll_dbg(" completed after wait");
+ i = handle_to_index[object_index];
+ _index = _fd_to_index_and_lock(fds[i].fd);
+ fds[i].revents = fds[i].events;
+ triggered++;
+ if (_index >= 0) {
+ LeaveCriticalSection(&_poll_fd[_index].mutex);
+ }
+ } else if (ret == WAIT_TIMEOUT) {
+ poll_dbg(" timed out");
+ triggered = 0; // 0 = timeout
+ } else {
+ errno = EIO;
+ triggered = -1; // error
+ }
+ }
+
+poll_exit:
+ if (handles_to_wait_on != NULL) {
+ free(handles_to_wait_on);
+ }
+ if (handle_to_index != NULL) {
+ free(handle_to_index);
+ }
+#if defined(DYNAMIC_FDS)
+ usbi_mutex_lock(&new_fd_mutex);
+ nb_new_fds = 0;
+ usbi_mutex_unlock(&new_fd_mutex);
+#endif
+ return triggered;
+}
+
+/*
+ * close a fake pipe fd
+ */
+int usbi_close(int fd)
+{
+ int _index;
+ int r = -1;
+
+ CHECK_INIT_POLLING;
+
+ _index = _fd_to_index_and_lock(fd);
+
+ if (_index < 0) {
+ errno = EBADF;
+ } else {
+ if (poll_fd[_index].overlapped != NULL) {
+ // Must be a different event for each end of the pipe
+ CloseHandle(poll_fd[_index].overlapped->hEvent);
+ free(poll_fd[_index].overlapped);
+ }
+ r = _close(poll_fd[_index].fd);
+ if (r != 0) {
+ errno = EIO;
+ }
+ poll_fd[_index] = INVALID_WINFD;
+ LeaveCriticalSection(&_poll_fd[_index].mutex);
+ }
+ return r;
+}
+
+/*
+ * synchronous write for fake "pipe" signaling
+ */
+ssize_t usbi_write(int fd, const void *buf, size_t count)
+{
+ int _index;
+
+ CHECK_INIT_POLLING;
+
+ if (count != sizeof(unsigned char)) {
+ usbi_err(NULL, "this function should only used for signaling");
+ return -1;
+ }
+
+ _index = _fd_to_index_and_lock(fd);
+
+ if ( (_index < 0) || (poll_fd[_index].overlapped == NULL) ) {
+ errno = EBADF;
+ if (_index >= 0) {
+ LeaveCriticalSection(&_poll_fd[_index].mutex);
+ }
+ return -1;
+ }
+
+ poll_dbg("set pipe event (fd = %d, thread = %08X)", _index, GetCurrentThreadId());
+ SetEvent(poll_fd[_index].overlapped->hEvent);
+ poll_fd[_index].overlapped->Internal = STATUS_WAIT_0;
+ // If two threads write on the pipe at the same time, we need to
+ // process two separate reads => use the overlapped as a counter
+ poll_fd[_index].overlapped->InternalHigh++;
+
+ LeaveCriticalSection(&_poll_fd[_index].mutex);
+ return sizeof(unsigned char);
+}
+
+/*
+ * synchronous read for fake "pipe" signaling
+ */
+ssize_t usbi_read(int fd, void *buf, size_t count)
+{
+ int _index;
+ ssize_t r = -1;
+
+ CHECK_INIT_POLLING;
+
+ if (count != sizeof(unsigned char)) {
+ usbi_err(NULL, "this function should only used for signaling");
+ return -1;
+ }
+
+ _index = _fd_to_index_and_lock(fd);
+
+ if (_index < 0) {
+ errno = EBADF;
+ return -1;
+ }
+
+ if (WaitForSingleObject(poll_fd[_index].overlapped->hEvent, INFINITE) != WAIT_OBJECT_0) {
+ usbi_warn(NULL, "waiting for event failed: %d", (int)GetLastError());
+ errno = EIO;
+ goto out;
+ }
+
+ poll_dbg("clr pipe event (fd = %d, thread = %08X)", _index, GetCurrentThreadId());
+ poll_fd[_index].overlapped->InternalHigh--;
+ // Don't reset unless we don't have any more events to process
+ if (poll_fd[_index].overlapped->InternalHigh <= 0) {
+ ResetEvent(poll_fd[_index].overlapped->hEvent);
+ poll_fd[_index].overlapped->Internal = STATUS_PENDING;
+ }
+
+ r = sizeof(unsigned char);
+
+out:
+ LeaveCriticalSection(&_poll_fd[_index].mutex);
+ return r;
+}
diff --git a/libusb-1.0/libusb/os/poll_windows.h b/libusb-1.0/libusb/os/poll_windows.h
new file mode 100644
index 0000000..36e3915
--- /dev/null
+++ b/libusb-1.0/libusb/os/poll_windows.h
@@ -0,0 +1,122 @@
+/*
+ * Windows compat: POSIX compatibility wrapper
+ * Copyright (C) 2009-2010 Pete Batard <pbatard@gmail.com>
+ * With contributions from Michael Plante, Orin Eman et al.
+ * Parts of poll implementation from libusb-win32, by Stephan Meyer et al.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+#pragma once
+
+#if defined(_MSC_VER)
+// disable /W4 MSVC warnings that are benign
+#pragma warning(disable:4127) // conditional expression is constant
+#endif
+
+// Uncomment to have poll return with EINTR as soon as a new transfer (fd) is added
+// This should result in a LIBUSB_ERROR_INTERRUPTED being returned by libusb calls,
+// which should give the app an opportunity to resubmit a new fd set.
+//#define DYNAMIC_FDS
+
+// Handle synchronous completion through the overlapped structure
+#if !defined(STATUS_REPARSE) // reuse the REPARSE status code
+#define STATUS_REPARSE ((LONG)0x00000104L)
+#endif
+#define STATUS_COMPLETED_SYNCHRONOUSLY STATUS_REPARSE
+#define HasOverlappedIoCompletedSync(lpOverlapped) (((DWORD)(lpOverlapped)->Internal) == STATUS_COMPLETED_SYNCHRONOUSLY)
+
+#define DUMMY_HANDLE ((HANDLE)(LONG_PTR)-2)
+
+enum windows_version {
+ WINDOWS_UNSUPPORTED,
+ WINDOWS_XP,
+ WINDOWS_2003, // also includes XP 64
+ WINDOWS_VISTA_AND_LATER,
+};
+extern enum windows_version windows_version;
+
+#define MAX_FDS 256
+
+#define POLLIN 0x0001 /* There is data to read */
+#define POLLPRI 0x0002 /* There is urgent data to read */
+#define POLLOUT 0x0004 /* Writing now will not block */
+#define POLLERR 0x0008 /* Error condition */
+#define POLLHUP 0x0010 /* Hung up */
+#define POLLNVAL 0x0020 /* Invalid request: fd not open */
+
+struct pollfd {
+ int fd; /* file descriptor */
+ short events; /* requested events */
+ short revents; /* returned events */
+};
+
+typedef unsigned int nfds_t;
+
+// access modes
+enum rw_type {
+ RW_NONE,
+ RW_READ,
+ RW_WRITE,
+};
+
+// fd struct that can be used for polling on Windows
+struct winfd {
+ int fd; // what's exposed to libusb core
+ HANDLE handle; // what we need to attach overlapped to the I/O op, so we can poll it
+ OVERLAPPED* overlapped; // what will report our I/O status
+ enum rw_type rw; // I/O transfer direction: read *XOR* write (NOT BOTH)
+};
+extern const struct winfd INVALID_WINFD;
+
+int usbi_pipe(int pipefd[2]);
+int usbi_poll(struct pollfd *fds, unsigned int nfds, int timeout);
+ssize_t usbi_write(int fd, const void *buf, size_t count);
+ssize_t usbi_read(int fd, void *buf, size_t count);
+int usbi_close(int fd);
+
+void init_polling(void);
+void exit_polling(void);
+struct winfd usbi_create_fd(HANDLE handle, int access_mode);
+void usbi_free_fd(int fd);
+struct winfd fd_to_winfd(int fd);
+struct winfd handle_to_winfd(HANDLE handle);
+struct winfd overlapped_to_winfd(OVERLAPPED* overlapped);
+
+/*
+ * Timeval operations
+ */
+#if defined(DDKBUILD)
+#include <winsock.h> // defines timeval functions on DDK
+#endif
+
+#if !defined(TIMESPEC_TO_TIMEVAL)
+#define TIMESPEC_TO_TIMEVAL(tv, ts) { \
+ (tv)->tv_sec = (long)(ts)->tv_sec; \
+ (tv)->tv_usec = (long)(ts)->tv_nsec / 1000; \
+}
+#endif
+#if !defined(timersub)
+#define timersub(a, b, result) \
+do { \
+ (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \
+ (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \
+ if ((result)->tv_usec < 0) { \
+ --(result)->tv_sec; \
+ (result)->tv_usec += 1000000; \
+ } \
+} while (0)
+#endif
+
diff --git a/libusb-1.0/libusb/os/threads_posix.h b/libusb-1.0/libusb/os/threads_posix.h
new file mode 100644
index 0000000..dc558d4
--- /dev/null
+++ b/libusb-1.0/libusb/os/threads_posix.h
@@ -0,0 +1,46 @@
+/*
+ * libusb synchronization using POSIX Threads
+ *
+ * Copyright (C) 2010 Peter Stuge <peter@stuge.se>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __LIBUSB_THREADS_POSIX_H__
+#define __LIBUSB_THREADS_POSIX_H__
+
+#include <pthread.h>
+
+#define usbi_mutex_static_t pthread_mutex_t
+#define USBI_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
+#define usbi_mutex_static_lock pthread_mutex_lock
+#define usbi_mutex_static_unlock pthread_mutex_unlock
+
+#define usbi_mutex_t pthread_mutex_t
+#define usbi_mutex_init pthread_mutex_init
+#define usbi_mutex_lock pthread_mutex_lock
+#define usbi_mutex_unlock pthread_mutex_unlock
+#define usbi_mutex_trylock pthread_mutex_trylock
+#define usbi_mutex_destroy pthread_mutex_destroy
+
+#define usbi_cond_t pthread_cond_t
+#define usbi_cond_init pthread_cond_init
+#define usbi_cond_wait pthread_cond_wait
+#define usbi_cond_timedwait pthread_cond_timedwait
+#define usbi_cond_broadcast pthread_cond_broadcast
+#define usbi_cond_destroy pthread_cond_destroy
+#define usbi_cond_signal pthread_cond_signal
+
+#endif /* __LIBUSB_THREADS_POSIX_H__ */
diff --git a/libusb-1.0/libusb/os/threads_windows.c b/libusb-1.0/libusb/os/threads_windows.c
new file mode 100644
index 0000000..fe84ec0
--- /dev/null
+++ b/libusb-1.0/libusb/os/threads_windows.c
@@ -0,0 +1,221 @@
+/*
+ * libusb synchronization on Microsoft Windows
+ *
+ * Copyright (C) 2010 Michael Plante <michael.plante@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <config.h>
+#include <objbase.h>
+#include <errno.h>
+#include <stdarg.h>
+
+#include "libusbi.h"
+
+// Workaround for MinGW-w64 multilib bug
+#if defined(_MSC_VER) || defined(_WIN64)
+#define INIT_INTERLOCKEDEXCHANGE
+#define pInterlockedExchange InterlockedExchange
+#else
+static LONG (WINAPI *pInterlockedExchange)(LONG volatile *, LONG) = NULL;
+#define INIT_INTERLOCKEDEXCHANGE if (pInterlockedExchange == NULL) { \
+ pInterlockedExchange = (LONG (WINAPI *)(LONG volatile *, LONG)) \
+ GetProcAddress(GetModuleHandle("KERNEL32"), "InterlockedExchange"); \
+ if (pInterlockedExchange == NULL) return ((errno=ENOENT)); \
+ }
+#endif
+
+int usbi_mutex_init(usbi_mutex_t *mutex,
+ const usbi_mutexattr_t *attr) {
+ if(! mutex) return ((errno=EINVAL));
+ *mutex = CreateMutex(NULL, FALSE, NULL);
+ if(!*mutex) return ((errno=ENOMEM));
+ return 0;
+}
+int usbi_mutex_destroy(usbi_mutex_t *mutex) {
+ // It is not clear if CloseHandle failure is due to failure to unlock.
+ // If so, this should be errno=EBUSY.
+ if(!mutex || !CloseHandle(*mutex)) return ((errno=EINVAL));
+ *mutex = NULL;
+ return 0;
+}
+int usbi_mutex_trylock(usbi_mutex_t *mutex) {
+ DWORD result;
+ if(!mutex) return ((errno=EINVAL));
+ result = WaitForSingleObject(*mutex, 0);
+ if(result == WAIT_OBJECT_0 || result == WAIT_ABANDONED)
+ return 0; // acquired (ToDo: check that abandoned is ok)
+ if(result == WAIT_TIMEOUT)
+ return ((errno=EBUSY));
+ return ((errno=EINVAL)); // don't know how this would happen
+ // so don't know proper errno
+}
+int usbi_mutex_lock(usbi_mutex_t *mutex) {
+ DWORD result;
+ if(!mutex) return ((errno=EINVAL));
+ result = WaitForSingleObject(*mutex, INFINITE);
+ if(result == WAIT_OBJECT_0 || result == WAIT_ABANDONED)
+ return 0; // acquired (ToDo: check that abandoned is ok)
+ return ((errno=EINVAL)); // don't know how this would happen
+ // so don't know proper errno
+}
+int usbi_mutex_unlock(usbi_mutex_t *mutex) {
+ if(!mutex) return ((errno=EINVAL));
+ if(!ReleaseMutex(*mutex)) return ((errno=EPERM ));
+ return 0;
+}
+
+int usbi_mutex_static_lock(usbi_mutex_static_t *mutex) {
+ if(!mutex) return ((errno=EINVAL));
+ INIT_INTERLOCKEDEXCHANGE;
+ while (pInterlockedExchange((LONG *)mutex, 1) == 1) {
+ SleepEx(0, TRUE);
+ }
+ return 0;
+}
+int usbi_mutex_static_unlock(usbi_mutex_static_t *mutex) {
+ if(!mutex) return ((errno=EINVAL));
+ *mutex = 0;
+ return 0;
+}
+
+
+
+int usbi_cond_init(usbi_cond_t *cond,
+ const usbi_condattr_t *attr) {
+ if(!cond) return ((errno=EINVAL));
+ list_init(&cond->waiters );
+ list_init(&cond->not_waiting);
+ return 0;
+}
+int usbi_cond_destroy(usbi_cond_t *cond) {
+ // This assumes no one is using this anymore. The check MAY NOT BE safe.
+ struct usbi_cond_perthread *pos, *prev_pos = NULL;
+ if(!cond) return ((errno=EINVAL));
+ if(!list_empty(&cond->waiters)) return ((errno=EBUSY )); // (!see above!)
+ list_for_each_entry(pos, &cond->not_waiting, list, struct usbi_cond_perthread) {
+ free(prev_pos);
+ list_del(&pos->list);
+ prev_pos = pos;
+ }
+ free(prev_pos);
+ prev_pos = pos = NULL;
+
+ return 0;
+}
+
+int usbi_cond_broadcast(usbi_cond_t *cond) {
+ // Assumes mutex is locked; this is not in keeping with POSIX spec, but
+ // libusb does this anyway, so we simplify by not adding more sync
+ // primitives to the CV definition!
+ int fail = 0;
+ struct usbi_cond_perthread *pos;
+ if(!cond) return ((errno=EINVAL));
+ list_for_each_entry(pos, &cond->waiters, list, struct usbi_cond_perthread) {
+ if(!SetEvent(pos->event))
+ fail = 1;
+ }
+ // The wait function will remove its respective item from the list.
+ return fail ? ((errno=EINVAL)) : 0;
+}
+int usbi_cond_signal(usbi_cond_t *cond) {
+ // Assumes mutex is locked; this is not in keeping with POSIX spec, but
+ // libusb does this anyway, so we simplify by not adding more sync
+ // primitives to the CV definition!
+ struct usbi_cond_perthread *pos;
+ if(!cond) return ((errno=EINVAL));
+ if(list_empty(&cond->waiters)) return 0; // no one to wakeup.
+ pos = list_entry(&cond->waiters.next, struct usbi_cond_perthread, list);
+ // The wait function will remove its respective item from the list.
+ return SetEvent(pos->event) ? 0 : ((errno=EINVAL));
+}
+static int __inline usbi_cond_intwait(usbi_cond_t *cond,
+ usbi_mutex_t *mutex,
+ DWORD timeout_ms) {
+ struct usbi_cond_perthread *pos;
+ int found = 0, r;
+ DWORD r2,tid = GetCurrentThreadId();
+ if(!cond || !mutex) return ((errno=EINVAL));
+ list_for_each_entry(pos, &cond->not_waiting, list, struct usbi_cond_perthread) {
+ if(tid == pos->tid) {
+ found = 1;
+ break;
+ }
+ }
+ if(!found) {
+ pos = malloc(sizeof(struct usbi_cond_perthread));
+ if(!pos) return ((errno=ENOMEM)); // This errno is not POSIX-allowed.
+ pos->tid = tid;
+ pos->event = CreateEvent(NULL, FALSE, FALSE, NULL); // auto-reset.
+ if(!pos->event) {
+ free(pos);
+ return ((errno=ENOMEM));
+ }
+ list_add(&pos->list, &cond->not_waiting);
+ }
+
+ list_del(&pos->list); // remove from not_waiting list.
+ list_add(&pos->list, &cond->waiters);
+
+ r = usbi_mutex_unlock(mutex);
+ if(r) return r;
+ r2 = WaitForSingleObject(pos->event, timeout_ms);
+ r = usbi_mutex_lock(mutex);
+ if(r) return r;
+
+ list_del(&pos->list);
+ list_add(&pos->list, &cond->not_waiting);
+
+ if(r2 == WAIT_TIMEOUT) return ((errno=ETIMEDOUT));
+
+ return 0;
+}
+// N.B.: usbi_cond_*wait() can also return ENOMEM, even though pthread_cond_*wait cannot!
+int usbi_cond_wait(usbi_cond_t *cond, usbi_mutex_t *mutex) {
+ return usbi_cond_intwait(cond, mutex, INFINITE);
+}
+int usbi_cond_timedwait(usbi_cond_t *cond,
+ usbi_mutex_t *mutex,
+ const struct timespec *abstime) {
+ FILETIME filetime;
+ ULARGE_INTEGER rtime;
+ struct timeval targ_time, cur_time, delta_time;
+ struct timespec cur_time_ns;
+ DWORD millis;
+ extern const uint64_t epoch_time;
+
+ GetSystemTimeAsFileTime(&filetime);
+ rtime.LowPart = filetime.dwLowDateTime;
+ rtime.HighPart = filetime.dwHighDateTime;
+ rtime.QuadPart -= epoch_time;
+ cur_time_ns.tv_sec = (long)(rtime.QuadPart / 10000000);
+ cur_time_ns.tv_nsec = (long)((rtime.QuadPart % 10000000)*100);
+ TIMESPEC_TO_TIMEVAL(&cur_time, &cur_time_ns);
+
+ TIMESPEC_TO_TIMEVAL(&targ_time, abstime);
+ timersub(&targ_time, &cur_time, &delta_time);
+ if(delta_time.tv_sec < 0) // abstime already passed?
+ millis = 0;
+ else {
+ millis = delta_time.tv_usec/1000;
+ millis += delta_time.tv_sec *1000;
+ if (delta_time.tv_usec % 1000) // round up to next millisecond
+ millis++;
+ }
+
+ return usbi_cond_intwait(cond, mutex, millis);
+}
+
diff --git a/libusb-1.0/libusb/os/threads_windows.h b/libusb-1.0/libusb/os/threads_windows.h
new file mode 100644
index 0000000..2cd1867
--- /dev/null
+++ b/libusb-1.0/libusb/os/threads_windows.h
@@ -0,0 +1,84 @@
+/*
+ * libusb synchronization on Microsoft Windows
+ *
+ * Copyright (C) 2010 Michael Plante <michael.plante@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __LIBUSB_THREADS_WINDOWS_H__
+#define __LIBUSB_THREADS_WINDOWS_H__
+
+#define usbi_mutex_static_t volatile LONG
+#define USBI_MUTEX_INITIALIZER 0
+
+#define usbi_mutex_t HANDLE
+
+struct usbi_cond_perthread {
+ struct list_head list;
+ DWORD tid;
+ HANDLE event;
+};
+struct usbi_cond_t_ {
+ // Every time a thread touches the CV, it winds up in one of these lists.
+ // It stays there until the CV is destroyed, even if the thread
+ // terminates.
+ struct list_head waiters;
+ struct list_head not_waiting;
+};
+typedef struct usbi_cond_t_ usbi_cond_t;
+
+// We *were* getting timespec from pthread.h:
+#if (!defined(HAVE_STRUCT_TIMESPEC) && !defined(_TIMESPEC_DEFINED))
+#define HAVE_STRUCT_TIMESPEC 1
+#define _TIMESPEC_DEFINED 1
+struct timespec {
+ long tv_sec;
+ long tv_nsec;
+};
+#endif /* HAVE_STRUCT_TIMESPEC | _TIMESPEC_DEFINED */
+
+// We *were* getting ETIMEDOUT from pthread.h:
+#ifndef ETIMEDOUT
+# define ETIMEDOUT 10060 /* This is the value in winsock.h. */
+#endif
+
+#define usbi_mutexattr_t void
+#define usbi_condattr_t void
+
+
+int usbi_mutex_static_lock(usbi_mutex_static_t *mutex);
+int usbi_mutex_static_unlock(usbi_mutex_static_t *mutex);
+
+
+int usbi_mutex_init(usbi_mutex_t *mutex,
+ const usbi_mutexattr_t *attr);
+int usbi_mutex_lock(usbi_mutex_t *mutex);
+int usbi_mutex_unlock(usbi_mutex_t *mutex);
+int usbi_mutex_trylock(usbi_mutex_t *mutex);
+int usbi_mutex_destroy(usbi_mutex_t *mutex);
+
+int usbi_cond_init(usbi_cond_t *cond,
+ const usbi_condattr_t *attr);
+int usbi_cond_destroy(usbi_cond_t *cond);
+int usbi_cond_wait(usbi_cond_t *cond, usbi_mutex_t *mutex);
+int usbi_cond_timedwait(usbi_cond_t *cond,
+ usbi_mutex_t *mutex,
+ const struct timespec *abstime);
+int usbi_cond_broadcast(usbi_cond_t *cond);
+int usbi_cond_signal(usbi_cond_t *cond);
+
+#endif /* __LIBUSB_THREADS_WINDOWS_H__ */
+
diff --git a/libusb-1.0/libusb/os/windows_usb.c b/libusb-1.0/libusb/os/windows_usb.c
new file mode 100644
index 0000000..6ad6229
--- /dev/null
+++ b/libusb-1.0/libusb/os/windows_usb.c
@@ -0,0 +1,4226 @@
+/*
+ * windows backend for libusb 1.0
+ * Copyright (c) 2009-2010 Pete Batard <pbatard@gmail.com>
+ * With contributions from Michael Plante, Orin Eman et al.
+ * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer
+ * HID Reports IOCTLs inspired from HIDAPI by Alan Ott, Signal 11 Software
+ * Hash table functions adapted from glibc, by Ulrich Drepper et al.
+ * Major code testing contribution by Xiaofan Chen
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+// COMPILATION OPTIONS:
+// - Should libusb automatically claim (and release) the interfaces it requires?
+#define AUTO_CLAIM
+// - Forces instant overlapped completion on timeouts: can prevents extensive
+// wait in poll, after a timeout, but might affect subsequent API calls.
+// ***USE AT YOUR OWN RISKS***
+//#define FORCE_INSTANT_TIMEOUTS
+
+// TODO: move all the assertion failures to usbi_err
+
+#include <config.h>
+#include <windows.h>
+#include <setupapi.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <process.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <objbase.h>
+#include <winioctl.h>
+
+#include <libusbi.h>
+#include "poll_windows.h"
+#include "windows_usb.h"
+
+// The following prevents "banned API" errors when using the MS's WDK OACR/Prefast
+#if defined(_PREFAST_)
+#pragma warning(disable:28719)
+#endif
+
+// The 2 macros below are used in conjunction with safe loops.
+#define LOOP_CHECK(fcall) { r=fcall; if (r != LIBUSB_SUCCESS) continue; }
+#define LOOP_BREAK(err) { r=err; continue; }
+
+extern void usbi_fd_notification(struct libusb_context *ctx);
+
+// Helper prototypes
+static int windows_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian);
+static int windows_clock_gettime(int clk_id, struct timespec *tp);
+unsigned __stdcall windows_clock_gettime_threaded(void* param);
+// HUB (limited) API prototypes
+static int hub_open(struct libusb_device_handle *dev_handle);
+static void hub_close(struct libusb_device_handle *dev_handle);
+// WinUSB API prototypes
+static int winusb_init(struct libusb_context *ctx);
+static int winusb_exit(void);
+static int winusb_open(struct libusb_device_handle *dev_handle);
+static void winusb_close(struct libusb_device_handle *dev_handle);
+static int winusb_configure_endpoints(struct libusb_device_handle *dev_handle, int iface);
+static int winusb_claim_interface(struct libusb_device_handle *dev_handle, int iface);
+static int winusb_release_interface(struct libusb_device_handle *dev_handle, int iface);
+static int winusb_submit_control_transfer(struct usbi_transfer *itransfer);
+static int winusb_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting);
+static int winusb_submit_bulk_transfer(struct usbi_transfer *itransfer);
+static int winusb_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint);
+static int winusb_abort_transfers(struct usbi_transfer *itransfer);
+static int winusb_abort_control(struct usbi_transfer *itransfer);
+static int winusb_reset_device(struct libusb_device_handle *dev_handle);
+static int winusb_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size);
+// HID API prototypes
+static int hid_init(struct libusb_context *ctx);
+static int hid_exit(void);
+static int hid_open(struct libusb_device_handle *dev_handle);
+static void hid_close(struct libusb_device_handle *dev_handle);
+static int hid_claim_interface(struct libusb_device_handle *dev_handle, int iface);
+static int hid_release_interface(struct libusb_device_handle *dev_handle, int iface);
+static int hid_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting);
+static int hid_submit_control_transfer(struct usbi_transfer *itransfer);
+static int hid_submit_bulk_transfer(struct usbi_transfer *itransfer);
+static int hid_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint);
+static int hid_abort_transfers(struct usbi_transfer *itransfer);
+static int hid_reset_device(struct libusb_device_handle *dev_handle);
+static int hid_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size);
+// Composite API prototypes
+static int composite_init(struct libusb_context *ctx);
+static int composite_exit(void);
+static int composite_open(struct libusb_device_handle *dev_handle);
+static void composite_close(struct libusb_device_handle *dev_handle);
+static int composite_claim_interface(struct libusb_device_handle *dev_handle, int iface);
+static int composite_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting);
+static int composite_release_interface(struct libusb_device_handle *dev_handle, int iface);
+static int composite_submit_control_transfer(struct usbi_transfer *itransfer);
+static int composite_submit_bulk_transfer(struct usbi_transfer *itransfer);
+static int composite_submit_iso_transfer(struct usbi_transfer *itransfer);
+static int composite_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint);
+static int composite_abort_transfers(struct usbi_transfer *itransfer);
+static int composite_abort_control(struct usbi_transfer *itransfer);
+static int composite_reset_device(struct libusb_device_handle *dev_handle);
+static int composite_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size);
+
+// Workaround for MinGW-w64 multilib bug
+#if defined(_MSC_VER) || defined(_WIN64)
+#define INIT_INTERLOCKEDEXCHANGE
+#define INIT_INTERLOCKEDINCREMENT
+#define pInterlockedExchange InterlockedExchange
+#define pInterlockedIncrement InterlockedIncrement
+#else
+static LONG (WINAPI *pInterlockedExchange)(LONG volatile *, LONG) = NULL;
+#define INIT_INTERLOCKEDEXCHANGE if (pInterlockedExchange == NULL) { \
+ pInterlockedExchange = (LONG (WINAPI *)(LONG volatile *, LONG)) \
+ GetProcAddress(GetModuleHandle("KERNEL32"), "InterlockedExchange"); \
+ if (pInterlockedExchange == NULL) { \
+ usbi_err(NULL, "InterlockedExchange is unavailable"); \
+ return 1; \
+ } \
+}
+static LONG (WINAPI *pInterlockedIncrement)(LONG volatile *) = NULL;
+#define INIT_INTERLOCKEDINCREMENT if (pInterlockedIncrement == NULL) { \
+ pInterlockedIncrement = (LONG (WINAPI *)(LONG volatile *)) \
+ GetProcAddress(GetModuleHandle("KERNEL32"), "InterlockedIncrement");\
+ if (pInterlockedIncrement == NULL) { \
+ usbi_err(NULL, "IInterlockedIncrement is unavailable"); \
+ return LIBUSB_ERROR_NOT_FOUND; \
+ } \
+}
+#endif
+
+// Global variables
+uint64_t hires_frequency, hires_ticks_to_ps;
+const uint64_t epoch_time = UINT64_C(116444736000000000); // 1970.01.01 00:00:000 in MS Filetime
+enum windows_version windows_version = WINDOWS_UNSUPPORTED;
+// Concurrency
+static int concurrent_usage = -1;
+#if defined(AUTO_CLAIM)
+usbi_mutex_t autoclaim_lock;
+#endif
+// Timer thread
+// NB: index 0 is for monotonic and 1 is for the thread exit event
+HANDLE timer_thread = NULL;
+HANDLE timer_mutex = NULL;
+struct timespec timer_tp;
+volatile LONG request_count[2] = {0, 1}; // last one must be > 0
+HANDLE timer_request[2] = { NULL, NULL };
+HANDLE timer_response = NULL;
+// API globals
+bool api_winusb_available = false;
+#define CHECK_WINUSB_AVAILABLE do { if (!api_winusb_available) return LIBUSB_ERROR_ACCESS; } while (0)
+bool api_hid_available = false;
+#define CHECK_HID_AVAILABLE do { if (!api_hid_available) return LIBUSB_ERROR_ACCESS; } while (0)
+
+static inline BOOLEAN guid_eq(const GUID *guid1, const GUID *guid2) {
+ if ((guid1 != NULL) && (guid2 != NULL)) {
+ return (memcmp(guid1, guid2, sizeof(GUID)) == 0);
+ }
+ return false;
+}
+
+#if defined(ENABLE_DEBUG_LOGGING) || defined(INCLUDE_DEBUG_LOGGING)
+static char* guid_to_string(const GUID* guid)
+{
+ static char guid_string[MAX_GUID_STRING_LENGTH];
+
+ if (guid == NULL) return NULL;
+ sprintf(guid_string, "{%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X}",
+ (unsigned int)guid->Data1, guid->Data2, guid->Data3,
+ guid->Data4[0], guid->Data4[1], guid->Data4[2], guid->Data4[3],
+ guid->Data4[4], guid->Data4[5], guid->Data4[6], guid->Data4[7]);
+ return guid_string;
+}
+#endif
+
+/*
+ * Converts a windows error to human readable string
+ * uses retval as errorcode, or, if 0, use GetLastError()
+ */
+static char *windows_error_str(uint32_t retval)
+{
+static char err_string[ERR_BUFFER_SIZE];
+
+ DWORD size;
+ size_t i;
+ uint32_t error_code, format_error;
+
+ error_code = retval?retval:GetLastError();
+
+ safe_sprintf(err_string, ERR_BUFFER_SIZE, "[%d] ", error_code);
+
+ size = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, error_code,
+ MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), &err_string[safe_strlen(err_string)],
+ ERR_BUFFER_SIZE - (DWORD)safe_strlen(err_string), NULL);
+ if (size == 0) {
+ format_error = GetLastError();
+ if (format_error)
+ safe_sprintf(err_string, ERR_BUFFER_SIZE,
+ "Windows error code %u (FormatMessage error code %u)", error_code, format_error);
+ else
+ safe_sprintf(err_string, ERR_BUFFER_SIZE, "Unknown error code %u", error_code);
+ } else {
+ // Remove CR/LF terminators
+ for (i=safe_strlen(err_string)-1; ((err_string[i]==0x0A) || (err_string[i]==0x0D)); i--) {
+ err_string[i] = 0;
+ }
+ }
+ return err_string;
+}
+
+/*
+ * Sanitize Microsoft's paths: convert to uppercase, add prefix and fix backslashes.
+ * Return an allocated sanitized string or NULL on error.
+ */
+static char* sanitize_path(const char* path)
+{
+ const char root_prefix[] = "\\\\.\\";
+ size_t j, size, root_size;
+ char* ret_path = NULL;
+ size_t add_root = 0;
+
+ if (path == NULL)
+ return NULL;
+
+ size = safe_strlen(path)+1;
+ root_size = sizeof(root_prefix)-1;
+
+ // Microsoft indiscriminatly uses '\\?\', '\\.\', '##?#" or "##.#" for root prefixes.
+ if (!((size > 3) && (((path[0] == '\\') && (path[1] == '\\') && (path[3] == '\\')) ||
+ ((path[0] == '#') && (path[1] == '#') && (path[3] == '#'))))) {
+ add_root = root_size;
+ size += add_root;
+ }
+
+ if ((ret_path = (char*)calloc(size, 1)) == NULL)
+ return NULL;
+
+ safe_strcpy(&ret_path[add_root], size-add_root, path);
+
+ // Ensure consistancy with root prefix
+ for (j=0; j<root_size; j++)
+ ret_path[j] = root_prefix[j];
+
+ // Same goes for '\' and '#' after the root prefix. Ensure '#' is used
+ for(j=root_size; j<size; j++) {
+ ret_path[j] = (char)toupper((int)ret_path[j]); // Fix case too
+ if (ret_path[j] == '\\')
+ ret_path[j] = '#';
+ }
+
+ return ret_path;
+}
+
+/*
+ * Cfgmgr32, OLE32 and SetupAPI DLL functions
+ */
+static int init_dlls(void)
+{
+ DLL_LOAD(Cfgmgr32.dll, CM_Get_Parent, TRUE);
+ DLL_LOAD(Cfgmgr32.dll, CM_Get_Child, TRUE);
+ DLL_LOAD(Cfgmgr32.dll, CM_Get_Sibling, TRUE);
+ DLL_LOAD(Cfgmgr32.dll, CM_Get_Device_IDA, TRUE);
+ // Prefixed to avoid conflict with header files
+ DLL_LOAD_PREFIXED(OLE32.dll, p, CLSIDFromString, TRUE);
+ DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiGetClassDevsA, TRUE);
+ DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiEnumDeviceInfo, TRUE);
+ DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiEnumDeviceInterfaces, TRUE);
+ DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiGetDeviceInterfaceDetailA, TRUE);
+ DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiDestroyDeviceInfoList, TRUE);
+ DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiOpenDevRegKey, TRUE);
+ DLL_LOAD_PREFIXED(SetupAPI.dll, p, SetupDiGetDeviceRegistryPropertyA, TRUE);
+ DLL_LOAD_PREFIXED(AdvAPI32.dll, p, RegQueryValueExW, TRUE);
+ DLL_LOAD_PREFIXED(AdvAPI32.dll, p, RegCloseKey, TRUE);
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * enumerate interfaces for the whole USB class
+ *
+ * Parameters:
+ * dev_info: a pointer to a dev_info list
+ * dev_info_data: a pointer to an SP_DEVINFO_DATA to be filled (or NULL if not needed)
+ * guid: the GUID for which to retrieve interface details
+ * index: zero based index of the interface in the device info list
+ *
+ * Note: it is the responsibility of the caller to free the DEVICE_INTERFACE_DETAIL_DATA
+ * structure returned and call this function repeatedly using the same guid (with an
+ * incremented index starting at zero) until all interfaces have been returned.
+ */
+bool get_devinfo_data(struct libusb_context *ctx,
+ HDEVINFO *dev_info, SP_DEVINFO_DATA *dev_info_data, unsigned _index)
+{
+ if (_index <= 0) {
+ *dev_info = pSetupDiGetClassDevsA(NULL, "USB", NULL, DIGCF_PRESENT|DIGCF_ALLCLASSES);
+ if (*dev_info == INVALID_HANDLE_VALUE) {
+ return false;
+ }
+ }
+
+ dev_info_data->cbSize = sizeof(SP_DEVINFO_DATA);
+ if (!pSetupDiEnumDeviceInfo(*dev_info, _index, dev_info_data)) {
+ if (GetLastError() != ERROR_NO_MORE_ITEMS) {
+ usbi_err(ctx, "Could not obtain device info data for index %u: %s",
+ _index, windows_error_str(0));
+ }
+ pSetupDiDestroyDeviceInfoList(*dev_info);
+ *dev_info = INVALID_HANDLE_VALUE;
+ return false;
+ }
+ return true;
+}
+
+/*
+ * enumerate interfaces for a specific GUID
+ *
+ * Parameters:
+ * dev_info: a pointer to a dev_info list
+ * dev_info_data: a pointer to an SP_DEVINFO_DATA to be filled (or NULL if not needed)
+ * guid: the GUID for which to retrieve interface details
+ * index: zero based index of the interface in the device info list
+ *
+ * Note: it is the responsibility of the caller to free the DEVICE_INTERFACE_DETAIL_DATA
+ * structure returned and call this function repeatedly using the same guid (with an
+ * incremented index starting at zero) until all interfaces have been returned.
+ */
+SP_DEVICE_INTERFACE_DETAIL_DATA_A *get_interface_details(struct libusb_context *ctx,
+ HDEVINFO *dev_info, SP_DEVINFO_DATA *dev_info_data, const GUID* guid, unsigned _index)
+{
+ SP_DEVICE_INTERFACE_DATA dev_interface_data;
+ SP_DEVICE_INTERFACE_DETAIL_DATA_A *dev_interface_details = NULL;
+ DWORD size;
+
+ if (_index <= 0) {
+ *dev_info = pSetupDiGetClassDevsA(guid, NULL, NULL, DIGCF_PRESENT|DIGCF_DEVICEINTERFACE);
+ }
+
+ if (dev_info_data != NULL) {
+ dev_info_data->cbSize = sizeof(SP_DEVINFO_DATA);
+ if (!pSetupDiEnumDeviceInfo(*dev_info, _index, dev_info_data)) {
+ if (GetLastError() != ERROR_NO_MORE_ITEMS) {
+ usbi_err(ctx, "Could not obtain device info data for index %u: %s",
+ _index, windows_error_str(0));
+ }
+ pSetupDiDestroyDeviceInfoList(*dev_info);
+ *dev_info = INVALID_HANDLE_VALUE;
+ return NULL;
+ }
+ }
+
+ dev_interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
+ if (!pSetupDiEnumDeviceInterfaces(*dev_info, NULL, guid, _index, &dev_interface_data)) {
+ if (GetLastError() != ERROR_NO_MORE_ITEMS) {
+ usbi_err(ctx, "Could not obtain interface data for index %u: %s",
+ _index, windows_error_str(0));
+ }
+ pSetupDiDestroyDeviceInfoList(*dev_info);
+ *dev_info = INVALID_HANDLE_VALUE;
+ return NULL;
+ }
+
+ // Read interface data (dummy + actual) to access the device path
+ if (!pSetupDiGetDeviceInterfaceDetailA(*dev_info, &dev_interface_data, NULL, 0, &size, NULL)) {
+ // The dummy call should fail with ERROR_INSUFFICIENT_BUFFER
+ if (GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
+ usbi_err(ctx, "could not access interface data (dummy) for index %u: %s",
+ _index, windows_error_str(0));
+ goto err_exit;
+ }
+ } else {
+ usbi_err(ctx, "program assertion failed - http://msdn.microsoft.com/en-us/library/ms792901.aspx is wrong.");
+ goto err_exit;
+ }
+
+ if ((dev_interface_details = malloc(size)) == NULL) {
+ usbi_err(ctx, "could not allocate interface data for index %u.", _index);
+ goto err_exit;
+ }
+
+ dev_interface_details->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_A);
+ if (!pSetupDiGetDeviceInterfaceDetailA(*dev_info, &dev_interface_data,
+ dev_interface_details, size, &size, NULL)) {
+ usbi_err(ctx, "could not access interface data (actual) for index %u: %s",
+ _index, windows_error_str(0));
+ }
+
+ return dev_interface_details;
+
+err_exit:
+ pSetupDiDestroyDeviceInfoList(*dev_info);
+ *dev_info = INVALID_HANDLE_VALUE;
+ return NULL;
+}
+
+/* Hash table functions - modified From glibc 2.3.2:
+ [Aho,Sethi,Ullman] Compilers: Principles, Techniques and Tools, 1986
+ [Knuth] The Art of Computer Programming, part 3 (6.4) */
+typedef struct htab_entry {
+ unsigned long used;
+ char* str;
+} htab_entry;
+htab_entry* htab_table = NULL;
+usbi_mutex_t htab_write_mutex = NULL;
+unsigned long htab_size, htab_filled;
+
+/* For the used double hash method the table size has to be a prime. To
+ correct the user given table size we need a prime test. This trivial
+ algorithm is adequate because the code is called only during init and
+ the number is likely to be small */
+static int isprime(unsigned long number)
+{
+ // no even number will be passed
+ unsigned int divider = 3;
+
+ while((divider * divider < number) && (number % divider != 0))
+ divider += 2;
+
+ return (number % divider != 0);
+}
+
+/* Before using the hash table we must allocate memory for it.
+ We allocate one element more as the found prime number says.
+ This is done for more effective indexing as explained in the
+ comment for the hash function. */
+int htab_create(struct libusb_context *ctx, unsigned long nel)
+{
+ if (htab_table != NULL) {
+ usbi_err(ctx, "hash table already allocated");
+ }
+
+ // Create a mutex
+ usbi_mutex_init(&htab_write_mutex, NULL);
+
+ // Change nel to the first prime number not smaller as nel.
+ nel |= 1;
+ while(!isprime(nel))
+ nel += 2;
+
+ htab_size = nel;
+ usbi_dbg("using %d entries hash table", nel);
+ htab_filled = 0;
+
+ // allocate memory and zero out.
+ htab_table = (htab_entry*)calloc(htab_size + 1, sizeof(htab_entry));
+ if (htab_table == NULL) {
+ usbi_err(ctx, "could not allocate space for hash table");
+ return 0;
+ }
+
+ return 1;
+}
+
+/* After using the hash table it has to be destroyed. */
+void htab_destroy(void)
+{
+ size_t i;
+ if (htab_table == NULL) {
+ return;
+ }
+
+ for (i=0; i<htab_size; i++) {
+ if (htab_table[i].used) {
+ safe_free(htab_table[i].str);
+ }
+ }
+ usbi_mutex_destroy(&htab_write_mutex);
+ safe_free(htab_table);
+}
+
+/* This is the search function. It uses double hashing with open addressing.
+ We use an trick to speed up the lookup. The table is created with one
+ more element available. This enables us to use the index zero special.
+ This index will never be used because we store the first hash index in
+ the field used where zero means not used. Every other value means used.
+ The used field can be used as a first fast comparison for equality of
+ the stored and the parameter value. This helps to prevent unnecessary
+ expensive calls of strcmp. */
+unsigned long htab_hash(char* str)
+{
+ unsigned long hval, hval2;
+ unsigned long idx;
+ unsigned long r = 5381;
+ int c;
+ char* sz = str;
+
+ // Compute main hash value (algorithm suggested by Nokia)
+ while ((c = *sz++))
+ r = ((r << 5) + r) + c;
+ if (r == 0)
+ ++r;
+
+ // compute table hash: simply take the modulus
+ hval = r % htab_size;
+ if (hval == 0)
+ ++hval;
+
+ // Try the first index
+ idx = hval;
+
+ if (htab_table[idx].used) {
+ if ( (htab_table[idx].used == hval)
+ && (safe_strcmp(str, htab_table[idx].str) == 0) ) {
+ // existing hash
+ return idx;
+ }
+ usbi_dbg("hash collision ('%s' vs '%s')", str, htab_table[idx].str);
+
+ // Second hash function, as suggested in [Knuth]
+ hval2 = 1 + hval % (htab_size - 2);
+
+ do {
+ // Because size is prime this guarantees to step through all available indexes
+ if (idx <= hval2) {
+ idx = htab_size + idx - hval2;
+ } else {
+ idx -= hval2;
+ }
+
+ // If we visited all entries leave the loop unsuccessfully
+ if (idx == hval) {
+ break;
+ }
+
+ // If entry is found use it.
+ if ( (htab_table[idx].used == hval)
+ && (safe_strcmp(str, htab_table[idx].str) == 0) ) {
+ return idx;
+ }
+ }
+ while (htab_table[idx].used);
+ }
+
+ // Not found => New entry
+
+ // If the table is full return an error
+ if (htab_filled >= htab_size) {
+ usbi_err(NULL, "hash table is full (%d entries)", htab_size);
+ return 0;
+ }
+
+ // Concurrent threads might be storing the same entry at the same time
+ // (eg. "simultaneous" enums from different threads) => use a mutex
+ usbi_mutex_lock(&htab_write_mutex);
+ // Just free any previously allocated string (which should be the same as
+ // new one). The possibility of concurrent threads storing a collision
+ // string (same hash, different string) at the same time is extremely low
+ safe_free(htab_table[idx].str);
+ htab_table[idx].used = hval;
+ htab_table[idx].str = malloc(safe_strlen(str)+1);
+ if (htab_table[idx].str == NULL) {
+ usbi_err(NULL, "could not duplicate string for hash table");
+ usbi_mutex_unlock(&htab_write_mutex);
+ return 0;
+ }
+ memcpy(htab_table[idx].str, str, safe_strlen(str)+1);
+ ++htab_filled;
+ usbi_mutex_unlock(&htab_write_mutex);
+
+ return idx;
+}
+
+/*
+ * Returns the session ID of a device's nth level ancestor
+ */
+static unsigned long get_ancestor_session_id(DWORD devinst, unsigned level)
+{
+ DWORD parent_devinst;
+ unsigned long session_id = 0;
+ char* sanitized_path = NULL;
+ char path[MAX_PATH_LENGTH];
+ unsigned i;
+
+ if (level < 1) return 0;
+ for (i = 0; i<level; i++) {
+ if (CM_Get_Parent(&parent_devinst, devinst, 0) != CR_SUCCESS) {
+ return 0;
+ }
+ devinst = parent_devinst;
+ }
+ if (CM_Get_Device_IDA(devinst, path, MAX_PATH_LENGTH, 0) != CR_SUCCESS) {
+ return 0;
+ }
+ // Return a special invalid session ID if the GP is not USB (as can be the case for HID)
+ if ((level == 2) && (path[0] != 'U') && (path[1] != 'S') && (path[2] != 'B')) {
+ usbi_dbg("detected non USB parent '%s'", path);
+ return ~0;
+ }
+ // TODO (post hotplug): try without sanitizing
+ sanitized_path = sanitize_path(path);
+ if (sanitized_path == NULL) {
+ return 0;
+ }
+ session_id = htab_hash(sanitized_path);
+ safe_free(sanitized_path);
+ return session_id;
+}
+
+/*
+ * Populate the endpoints addresses of the device_priv interface helper structs
+ */
+static int windows_assign_endpoints(struct libusb_device_handle *dev_handle, int iface, int altsetting)
+{
+ int i, r;
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ struct libusb_config_descriptor *conf_desc;
+ const struct libusb_interface_descriptor *if_desc;
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+
+ r = libusb_get_config_descriptor(dev_handle->dev, 0, &conf_desc);
+ if (r != LIBUSB_SUCCESS) {
+ usbi_warn(ctx, "could not read config descriptor: error %d", r);
+ return r;
+ }
+
+ if_desc = &conf_desc->interface[iface].altsetting[altsetting];
+ safe_free(priv->usb_interface[iface].endpoint);
+
+ if (if_desc->bNumEndpoints == 0) {
+ usbi_dbg("no endpoints found for interface %d", iface);
+ return LIBUSB_SUCCESS;
+ }
+
+ priv->usb_interface[iface].endpoint = malloc(if_desc->bNumEndpoints);
+ if (priv->usb_interface[iface].endpoint == NULL) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ priv->usb_interface[iface].nb_endpoints = if_desc->bNumEndpoints;
+ for (i=0; i<if_desc->bNumEndpoints; i++) {
+ priv->usb_interface[iface].endpoint[i] = if_desc->endpoint[i].bEndpointAddress;
+ usbi_dbg("(re)assigned endpoint %02X to interface %d", priv->usb_interface[iface].endpoint[i], iface);
+ }
+ libusb_free_config_descriptor(conf_desc);
+
+ // Extra init is required for WinUSB endpoints
+ if (priv->apib->id == USB_API_WINUSB) {
+ return winusb_configure_endpoints(dev_handle, iface);
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+// Lookup for a match in the list of API driver names
+bool is_api_driver(char* driver, uint8_t api)
+{
+ uint8_t i;
+ const char sep_str[2] = {LIST_SEPARATOR, 0};
+ char *tok, *tmp_str;
+ size_t len = safe_strlen(driver);
+
+ if (len == 0) return false;
+ tmp_str = calloc(len+1, 1);
+ if (tmp_str == NULL) return false;
+ memcpy(tmp_str, driver, len+1);
+ tok = strtok(tmp_str, sep_str);
+ while (tok != NULL) {
+ for (i=0; i<usb_api_backend[api].nb_driver_names; i++) {
+ if (safe_strcmp(tok, usb_api_backend[api].driver_name_list[i]) == 0) {
+ free(tmp_str);
+ return true;
+ }
+ }
+ tok = strtok(NULL, sep_str);
+ }
+ free (tmp_str);
+ return false;
+}
+
+/*
+ * auto-claiming and auto-release helper functions
+ */
+#if defined(AUTO_CLAIM)
+static int auto_claim(struct libusb_transfer *transfer, int *interface_number, int api_type)
+{
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(
+ transfer->dev_handle);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int current_interface = *interface_number;
+ int r = LIBUSB_SUCCESS;
+
+ switch(api_type) {
+ case USB_API_WINUSB:
+ case USB_API_HID:
+ break;
+ default:
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ usbi_mutex_lock(&autoclaim_lock);
+ if (current_interface < 0) // No serviceable interface was found
+ {
+ for (current_interface=0; current_interface<USB_MAXINTERFACES; current_interface++) {
+ // Must claim an interface of the same API type
+ if ( (priv->usb_interface[current_interface].apib->id == api_type)
+ && (libusb_claim_interface(transfer->dev_handle, current_interface) == LIBUSB_SUCCESS) ) {
+ usbi_dbg("auto-claimed interface %d for control request", current_interface);
+ if (handle_priv->autoclaim_count[current_interface] != 0) {
+ usbi_warn(ctx, "program assertion failed - autoclaim_count was nonzero");
+ }
+ handle_priv->autoclaim_count[current_interface]++;
+ break;
+ }
+ }
+ if (current_interface == USB_MAXINTERFACES) {
+ usbi_err(ctx, "could not auto-claim any interface");
+ r = LIBUSB_ERROR_NOT_FOUND;
+ }
+ } else {
+ // If we have a valid interface that was autoclaimed, we must increment
+ // its autoclaim count so that we can prevent an early release.
+ if (handle_priv->autoclaim_count[current_interface] != 0) {
+ handle_priv->autoclaim_count[current_interface]++;
+ }
+ }
+ usbi_mutex_unlock(&autoclaim_lock);
+
+ *interface_number = current_interface;
+ return r;
+
+}
+
+static void auto_release(struct usbi_transfer *itransfer)
+{
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ libusb_device_handle *dev_handle = transfer->dev_handle;
+ struct windows_device_handle_priv* handle_priv = __device_handle_priv(dev_handle);
+ int r;
+
+ usbi_mutex_lock(&autoclaim_lock);
+ if (handle_priv->autoclaim_count[transfer_priv->interface_number] > 0) {
+ handle_priv->autoclaim_count[transfer_priv->interface_number]--;
+ if (handle_priv->autoclaim_count[transfer_priv->interface_number] == 0) {
+ r = libusb_release_interface(dev_handle, transfer_priv->interface_number);
+ if (r == LIBUSB_SUCCESS) {
+ usbi_dbg("auto-released interface %d", transfer_priv->interface_number);
+ } else {
+ usbi_dbg("failed to auto-release interface %d (%s)",
+ transfer_priv->interface_number, libusb_strerror(r));
+ }
+ }
+ }
+ usbi_mutex_unlock(&autoclaim_lock);
+}
+#endif
+
+
+/*
+ * init: libusb backend init function
+ *
+ * This function enumerates the HCDs (Host Controller Drivers) and populates our private HCD list
+ * In our implementation, we equate Windows' "HCD" to LibUSB's "bus". Note that bus is zero indexed.
+ * HCDs are not expected to change after init (might not hold true for hot pluggable USB PCI card?)
+ */
+static int windows_init(struct libusb_context *ctx)
+{
+ int i, r = LIBUSB_ERROR_OTHER;
+ OSVERSIONINFO os_version;
+ HANDLE semaphore;
+ char sem_name[11+1+8]; // strlen(libusb_init)+'\0'+(32-bit hex PID)
+
+ sprintf(sem_name, "libusb_init%08X", (unsigned int)GetCurrentProcessId()&0xFFFFFFFF);
+ semaphore = CreateSemaphoreA(NULL, 1, 1, sem_name);
+ if (semaphore == NULL) {
+ usbi_err(ctx, "could not create semaphore: %s", windows_error_str(0));
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ // A successful wait brings our semaphore count to 0 (unsignaled)
+ // => any concurent wait stalls until the semaphore's release
+ if (WaitForSingleObject(semaphore, INFINITE) != WAIT_OBJECT_0) {
+ usbi_err(ctx, "failure to access semaphore: %s", windows_error_str(0));
+ CloseHandle(semaphore);
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ // NB: concurrent usage supposes that init calls are equally balanced with
+ // exit calls. If init is called more than exit, we will not exit properly
+ if ( ++concurrent_usage == 0 ) { // First init?
+ // Detect OS version
+ memset(&os_version, 0, sizeof(OSVERSIONINFO));
+ os_version.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+ windows_version = WINDOWS_UNSUPPORTED;
+ if ((GetVersionEx(&os_version) != 0) && (os_version.dwPlatformId == VER_PLATFORM_WIN32_NT)) {
+ if ((os_version.dwMajorVersion == 5) && (os_version.dwMinorVersion == 1)) {
+ windows_version = WINDOWS_XP;
+ } else if ((os_version.dwMajorVersion == 5) && (os_version.dwMinorVersion == 2)) {
+ windows_version = WINDOWS_2003; // also includes XP 64
+ } else if (os_version.dwMajorVersion >= 6) {
+ windows_version = WINDOWS_VISTA_AND_LATER;
+ }
+ }
+ if (windows_version == WINDOWS_UNSUPPORTED) {
+ usbi_err(ctx, "This version of Windows is NOT supported");
+ r = LIBUSB_ERROR_NOT_SUPPORTED;
+ goto init_exit;
+ }
+
+#if defined(AUTO_CLAIM)
+ // We need a lock for proper auto-release
+ usbi_mutex_init(&autoclaim_lock, NULL);
+#endif
+
+ // Initialize pollable file descriptors
+ init_polling();
+
+ // Load DLL imports
+ if (init_dlls() != LIBUSB_SUCCESS) {
+ usbi_err(ctx, "could not resolve DLL functions");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ // Initialize the low level APIs (we don't care about errors at this stage)
+ for (i=0; i<USB_API_MAX; i++) {
+ usb_api_backend[i].init(ctx);
+ }
+
+ // Because QueryPerformanceCounter might report different values when
+ // running on different cores, we create a separate thread for the timer
+ // calls, which we glue to the first core always to prevent timing discrepancies.
+ r = LIBUSB_ERROR_NO_MEM;
+ for (i = 0; i < 2; i++) {
+ timer_request[i] = CreateEvent(NULL, TRUE, FALSE, NULL);
+ if (timer_request[i] == NULL) {
+ usbi_err(ctx, "could not create timer request event %d - aborting", i);
+ goto init_exit;
+ }
+ }
+ timer_response = CreateSemaphore(NULL, 0, MAX_TIMER_SEMAPHORES, NULL);
+ if (timer_response == NULL) {
+ usbi_err(ctx, "could not create timer response semaphore - aborting");
+ goto init_exit;
+ }
+ timer_mutex = CreateMutex(NULL, FALSE, NULL);
+ if (timer_mutex == NULL) {
+ usbi_err(ctx, "could not create timer mutex - aborting");
+ goto init_exit;
+ }
+ timer_thread = (HANDLE)_beginthreadex(NULL, 0, windows_clock_gettime_threaded, NULL, 0, NULL);
+ if (timer_thread == NULL) {
+ usbi_err(ctx, "Unable to create timer thread - aborting");
+ goto init_exit;
+ }
+ SetThreadAffinityMask(timer_thread, 0);
+
+ // Create a hash table to store session ids. Second parameter is better if prime
+ htab_create(ctx, HTAB_SIZE);
+
+ r = LIBUSB_SUCCESS;
+ }
+
+init_exit: // Holds semaphore here.
+ if(!concurrent_usage && r != LIBUSB_SUCCESS) { // First init failed?
+ if (timer_thread) {
+ SetEvent(timer_request[1]); // actually the signal to quit the thread.
+ if (WAIT_OBJECT_0 != WaitForSingleObject(timer_thread, INFINITE)) {
+ usbi_warn(ctx, "could not wait for timer thread to quit");
+ TerminateThread(timer_thread, 1); // shouldn't happen, but we're destroying
+ // all objects it might have held anyway.
+ }
+ CloseHandle(timer_thread);
+ timer_thread = NULL;
+ }
+ for (i = 0; i < 2; i++) {
+ if (timer_request[i]) {
+ CloseHandle(timer_request[i]);
+ timer_request[i] = NULL;
+ }
+ }
+ if (timer_response) {
+ CloseHandle(timer_response);
+ timer_response = NULL;
+ }
+ if (timer_mutex) {
+ CloseHandle(timer_mutex);
+ timer_mutex = NULL;
+ }
+ htab_destroy();
+ }
+
+ if (r != LIBUSB_SUCCESS)
+ --concurrent_usage; // Not expected to call libusb_exit if we failed.
+
+ ReleaseSemaphore(semaphore, 1, NULL); // increase count back to 1
+ CloseHandle(semaphore);
+ return r;
+}
+
+/*
+ * HCD (root) hubs need to have their device descriptor manually populated
+ *
+ * Note that, like Microsoft does in the device manager, we populate the
+ * Vendor and Device ID for HCD hubs with the ones from the PCI HCD device.
+ */
+static int force_hcd_device_descriptor(struct libusb_device *dev)
+{
+ struct windows_device_priv *parent_priv, *priv = __device_priv(dev);
+ struct libusb_context *ctx = DEVICE_CTX(dev);
+ int vid, pid;
+
+ dev->num_configurations = 1;
+ priv->dev_descriptor.bLength = sizeof(USB_DEVICE_DESCRIPTOR);
+ priv->dev_descriptor.bDescriptorType = USB_DEVICE_DESCRIPTOR_TYPE;
+ priv->dev_descriptor.bNumConfigurations = 1;
+ priv->active_config = 1;
+
+ if (priv->parent_dev == NULL) {
+ usbi_err(ctx, "program assertion failed - HCD hub has no parent");
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+ parent_priv = __device_priv(priv->parent_dev);
+ if (sscanf(parent_priv->path, "\\\\.\\PCI#VEN_%04x&DEV_%04x%*s", &vid, &pid) == 2) {
+ priv->dev_descriptor.idVendor = (uint16_t)vid;
+ priv->dev_descriptor.idProduct = (uint16_t)pid;
+ } else {
+ usbi_warn(ctx, "could not infer VID/PID of HCD hub from '%s'", parent_priv->path);
+ priv->dev_descriptor.idVendor = 0x1d6b; // Linux Foundation root hub
+ priv->dev_descriptor.idProduct = 1;
+ }
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * fetch and cache all the config descriptors through I/O
+ */
+static int cache_config_descriptors(struct libusb_device *dev, HANDLE hub_handle, char* device_id)
+{
+ DWORD size, ret_size;
+ struct libusb_context *ctx = DEVICE_CTX(dev);
+ struct windows_device_priv *priv = __device_priv(dev);
+ int r;
+ uint8_t i;
+
+ USB_CONFIGURATION_DESCRIPTOR_SHORT cd_buf_short; // dummy request
+ PUSB_DESCRIPTOR_REQUEST cd_buf_actual = NULL; // actual request
+ PUSB_CONFIGURATION_DESCRIPTOR cd_data = NULL;
+
+ if (dev->num_configurations == 0)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ priv->config_descriptor = malloc(dev->num_configurations * sizeof(PUSB_CONFIGURATION_DESCRIPTOR));
+ if (priv->config_descriptor == NULL)
+ return LIBUSB_ERROR_NO_MEM;
+ for (i=0; i<dev->num_configurations; i++)
+ priv->config_descriptor[i] = NULL;
+
+ for (i=0, r=LIBUSB_SUCCESS; ; i++)
+ {
+ // safe loop: release all dynamic resources
+ safe_free(cd_buf_actual);
+
+ // safe loop: end of loop condition
+ if ((i >= dev->num_configurations) || (r != LIBUSB_SUCCESS))
+ break;
+
+ size = sizeof(USB_CONFIGURATION_DESCRIPTOR_SHORT);
+ memset(&cd_buf_short, 0, size);
+
+ cd_buf_short.req.ConnectionIndex = (ULONG)priv->port;
+ cd_buf_short.req.SetupPacket.bmRequest = LIBUSB_ENDPOINT_IN;
+ cd_buf_short.req.SetupPacket.bRequest = USB_REQUEST_GET_DESCRIPTOR;
+ cd_buf_short.req.SetupPacket.wValue = (USB_CONFIGURATION_DESCRIPTOR_TYPE << 8) | i;
+ cd_buf_short.req.SetupPacket.wIndex = i;
+ cd_buf_short.req.SetupPacket.wLength = (USHORT)(size - sizeof(USB_DESCRIPTOR_REQUEST));
+
+ // Dummy call to get the required data size
+ if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, &cd_buf_short, size,
+ &cd_buf_short, size, &ret_size, NULL)) {
+ usbi_err(ctx, "could not access configuration descriptor (dummy) for '%s': %s", device_id, windows_error_str(0));
+ LOOP_BREAK(LIBUSB_ERROR_IO);
+ }
+
+ if ((ret_size != size) || (cd_buf_short.data.wTotalLength < sizeof(USB_CONFIGURATION_DESCRIPTOR))) {
+ usbi_err(ctx, "unexpected configuration descriptor size (dummy) for '%s'.", device_id);
+ LOOP_BREAK(LIBUSB_ERROR_IO);
+ }
+
+ size = sizeof(USB_DESCRIPTOR_REQUEST) + cd_buf_short.data.wTotalLength;
+ if ((cd_buf_actual = (PUSB_DESCRIPTOR_REQUEST)malloc(size)) == NULL) {
+ usbi_err(ctx, "could not allocate configuration descriptor buffer for '%s'.", device_id);
+ LOOP_BREAK(LIBUSB_ERROR_NO_MEM);
+ }
+ memset(cd_buf_actual, 0, size);
+
+ // Actual call
+ cd_buf_actual->ConnectionIndex = (ULONG)priv->port;
+ cd_buf_actual->SetupPacket.bmRequest = LIBUSB_ENDPOINT_IN;
+ cd_buf_actual->SetupPacket.bRequest = USB_REQUEST_GET_DESCRIPTOR;
+ cd_buf_actual->SetupPacket.wValue = (USB_CONFIGURATION_DESCRIPTOR_TYPE << 8) | i;
+ cd_buf_actual->SetupPacket.wIndex = i;
+ cd_buf_actual->SetupPacket.wLength = (USHORT)(size - sizeof(USB_DESCRIPTOR_REQUEST));
+
+ if (!DeviceIoControl(hub_handle, IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, cd_buf_actual, size,
+ cd_buf_actual, size, &ret_size, NULL)) {
+ usbi_err(ctx, "could not access configuration descriptor (actual) for '%s': %s", device_id, windows_error_str(0));
+ LOOP_BREAK(LIBUSB_ERROR_IO);
+ }
+
+ cd_data = (PUSB_CONFIGURATION_DESCRIPTOR)((UCHAR*)cd_buf_actual+sizeof(USB_DESCRIPTOR_REQUEST));
+
+ if ((size != ret_size) || (cd_data->wTotalLength != cd_buf_short.data.wTotalLength)) {
+ usbi_err(ctx, "unexpected configuration descriptor size (actual) for '%s'.", device_id);
+ LOOP_BREAK(LIBUSB_ERROR_IO);
+ }
+
+ if (cd_data->bDescriptorType != USB_CONFIGURATION_DESCRIPTOR_TYPE) {
+ usbi_err(ctx, "not a configuration descriptor for '%s'", device_id);
+ LOOP_BREAK(LIBUSB_ERROR_IO);
+ }
+
+ usbi_dbg("cached config descriptor %d (bConfigurationValue=%d, %d bytes)",
+ i, cd_data->bConfigurationValue, cd_data->wTotalLength);
+
+ // Cache the descriptor
+ priv->config_descriptor[i] = malloc(cd_data->wTotalLength);
+ if (priv->config_descriptor[i] == NULL)
+ return LIBUSB_ERROR_NO_MEM;
+
+ memcpy(priv->config_descriptor[i], cd_data, cd_data->wTotalLength);
+ }
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * Populate a libusb device structure
+ */
+static int init_device(struct libusb_device* dev, struct libusb_device* parent_dev,
+ uint8_t port_number, char* device_id, DWORD devinst)
+{
+ HANDLE handle;
+ DWORD size;
+ USB_NODE_CONNECTION_INFORMATION conn_info;
+ struct windows_device_priv *priv, *parent_priv;
+ struct libusb_context *ctx = DEVICE_CTX(dev);
+ struct libusb_device* tmp_dev;
+ unsigned i;
+
+ if ((dev == NULL) || (parent_dev == NULL)) {
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+ priv = __device_priv(dev);
+ parent_priv = __device_priv(parent_dev);
+ if (parent_priv->apib->id != USB_API_HUB) {
+ usbi_warn(ctx, "parent for device '%s' is not a hub", device_id);
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ // It is possible for the parent hub not to have been initialized yet
+ // If that's the case, lookup the ancestors to set the bus number
+ if (parent_dev->bus_number == 0) {
+ for (i=2; ; i++) {
+ tmp_dev = usbi_get_device_by_session_id(ctx, get_ancestor_session_id(devinst, i));
+ if (tmp_dev == NULL) break;
+ if (tmp_dev->bus_number != 0) {
+ usbi_dbg("got bus number from ancestor #%d", i);
+ parent_dev->bus_number = tmp_dev->bus_number;
+ break;
+ }
+ }
+ }
+ if (parent_dev->bus_number == 0) {
+ usbi_err(ctx, "program assertion failed: unable to find ancestor bus number for '%s'", device_id);
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+ dev->bus_number = parent_dev->bus_number;
+ priv->port = port_number;
+ priv->depth = parent_priv->depth + 1;
+ priv->parent_dev = parent_dev;
+ memset(&conn_info, 0, sizeof(conn_info));
+
+ if (priv->depth != 0) { // Not a HCD hub
+ handle = CreateFileA(parent_priv->path, GENERIC_WRITE, FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
+ FILE_FLAG_OVERLAPPED, NULL);
+ if (handle == INVALID_HANDLE_VALUE) {
+ usbi_warn(ctx, "could not open hub %s: %s", parent_priv->path, windows_error_str(0));
+ return LIBUSB_ERROR_ACCESS;
+ }
+ size = sizeof(USB_NODE_CONNECTION_INFORMATION);
+ conn_info.ConnectionIndex = (ULONG)port_number;
+ if (!DeviceIoControl(handle, IOCTL_USB_GET_NODE_CONNECTION_INFORMATION, &conn_info, size,
+ &conn_info, size, &size, NULL)) {
+ usbi_warn(ctx, "could not get node connection information for device '%s': %s",
+ device_id, windows_error_str(0));
+ safe_closehandle(handle);
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+ if (conn_info.ConnectionStatus == NoDeviceConnected) {
+ usbi_err(ctx, "device '%s' is no longer connected!", device_id);
+ safe_closehandle(handle);
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+ dev->device_address = (uint8_t)conn_info.DeviceAddress;
+ memcpy(&priv->dev_descriptor, &(conn_info.DeviceDescriptor), sizeof(USB_DEVICE_DESCRIPTOR));
+ dev->num_configurations = priv->dev_descriptor.bNumConfigurations;
+ priv->active_config = conn_info.CurrentConfigurationValue;
+ usbi_dbg("found %d configurations (active conf: %d)", dev->num_configurations, priv->active_config);
+ // If we can't read the config descriptors, just set the number of confs to zero
+ if (cache_config_descriptors(dev, handle, device_id) != LIBUSB_SUCCESS) {
+ dev->num_configurations = 0;
+ priv->dev_descriptor.bNumConfigurations = 0;
+ }
+ safe_closehandle(handle);
+
+ if (conn_info.DeviceAddress > UINT8_MAX) {
+ usbi_err(ctx, "program assertion failed: device address overflow");
+ }
+ dev->device_address = (uint8_t)conn_info.DeviceAddress;
+ } else {
+ dev->device_address = UINT8_MAX; // Hubs from HCD have a devaddr of 255
+ force_hcd_device_descriptor(dev);
+ }
+
+ usbi_dbg("(bus: %d, addr: %d, depth: %d, port: %d): '%s'",
+ dev->bus_number, dev->device_address, priv->depth, priv->port, device_id);
+
+ return LIBUSB_SUCCESS;
+}
+
+// Returns the api type, or 0 if not found/unsupported
+static uint8_t get_api_type(struct libusb_context *ctx,
+ HDEVINFO *dev_info, SP_DEVINFO_DATA *dev_info_data)
+{
+ // Precedence for filter drivers vs driver is in the order of this array
+ struct driver_lookup lookup[3] = {
+ {"\0\0", SPDRP_SERVICE, "driver"},
+ {"\0\0", SPDRP_UPPERFILTERS, "upper filter driver"},
+ {"\0\0", SPDRP_LOWERFILTERS, "lower filter driver"}
+ };
+ DWORD size, reg_type;
+ unsigned k, l;
+ uint8_t api;
+
+ // Check the service & filter names to know the API we should use
+ for (k=0; k<3; k++) {
+ if (pSetupDiGetDeviceRegistryPropertyA(*dev_info, dev_info_data, lookup[k].reg_prop,
+ &reg_type, (BYTE*)lookup[k].list, MAX_KEY_LENGTH, &size)) {
+ // Turn the REG_SZ SPDRP_SERVICE into REG_MULTI_SZ
+ if (lookup[k].reg_prop == SPDRP_SERVICE) {
+ // our buffers are MAX_KEY_LENGTH+1 so we can overflow if needed
+ lookup[k].list[safe_strlen(lookup[k].list)+1] = 0;
+ }
+ // MULTI_SZ is a pain to work with. Turn it into something much more manageable
+ // NB: none of the driver names we check against contain LIST_SEPARATOR,
+ // (currently ';'), so even if an unsuported one does, it's not an issue
+ for (l=0; (lookup[k].list[l] != 0) || (lookup[k].list[l+1] != 0); l++) {
+ if (lookup[k].list[l] == 0) {
+ lookup[k].list[l] = LIST_SEPARATOR;
+ }
+ }
+ upperize(lookup[k].list);
+ usbi_dbg("%s(s): %s", lookup[k].designation, lookup[k].list);
+ } else {
+ if (GetLastError() != ERROR_INVALID_DATA) {
+ usbi_dbg("could not access %s: %s", lookup[k].designation, windows_error_str(0));
+ }
+ lookup[k].list[0] = 0;
+ }
+ }
+
+ for (api=1; api<USB_API_MAX; api++) {
+ for (k=0; k<3; k++) {
+ if (is_api_driver(lookup[k].list, api)) {
+ usbi_dbg("matched %s name against %s", lookup[k].designation, usb_api_backend[api].designation);
+ break;
+ }
+ }
+ if (k >= 3) continue;
+ return api;
+ }
+ return 0;
+}
+
+static int set_composite_interface(struct libusb_context* ctx, struct libusb_device* dev,
+ char* dev_interface_path, char* device_id, uint8_t api)
+{
+ unsigned i;
+ struct windows_device_priv *priv = __device_priv(dev);
+ int interface_number;
+
+ if (priv->apib->id != USB_API_COMPOSITE) {
+ usbi_err(ctx, "program assertion failed: '%s' is not composite", device_id);
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+
+ // Because MI_## are not necessarily in sequential order (some composite HID
+ // devices will have only MI_00 & MI_03 for instance), we retrieve the actual
+ // interface number from the path's MI value
+ interface_number = 0;
+ for (i=0; device_id[i] != 0; ) {
+ if ( (device_id[i++] == 'M') && (device_id[i++] == 'I')
+ && (device_id[i++] == '_') ) {
+ interface_number = (device_id[i++] - '0')*10;
+ interface_number += device_id[i] - '0';
+ break;
+ }
+ }
+
+ if (device_id[i] == 0) {
+ usbi_warn(ctx, "failure to read interface number for %s. Using default value %d",
+ device_id, interface_number);
+ }
+
+ // HID devices can have multiple collections (COL##) for each MI_## interface
+ if (priv->usb_interface[interface_number].path != NULL) {
+ if (api != USB_API_HID) {
+ usbi_warn(ctx, "program assertion failed %s is not an USB HID collection", device_id);
+ return LIBUSB_ERROR_OTHER;
+ }
+ usbi_dbg("interface[%d] already set - ignoring HID collection: %s",
+ interface_number, device_id);
+ return LIBUSB_ERROR_ACCESS;
+ }
+
+ usbi_dbg("interface[%d] = %s", interface_number, dev_interface_path);
+ priv->usb_interface[interface_number].path = dev_interface_path;
+ priv->usb_interface[interface_number].apib = &usb_api_backend[api];
+ if ((api == USB_API_HID) && (priv->hid == NULL)) {
+ priv->hid = calloc(1, sizeof(struct hid_device_priv));
+ }
+ priv->composite_api_flags |= 1<<api;
+
+ return LIBUSB_SUCCESS;
+}
+
+static int set_hid_interface(struct libusb_context* ctx, struct libusb_device* dev,
+ char* dev_interface_path)
+{
+ struct windows_device_priv *priv = __device_priv(dev);
+
+ if (priv->hid == NULL) {
+ usbi_err(ctx, "program assertion failed: parent is not HID");
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+ priv->usb_interface[priv->hid->nb_interfaces].path = dev_interface_path;
+ priv->usb_interface[priv->hid->nb_interfaces].apib = &usb_api_backend[USB_API_HID];
+ usbi_dbg("interface[%d] = %s", priv->hid->nb_interfaces, dev_interface_path);
+ priv->hid->nb_interfaces++;
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * get_device_list: libusb backend device enumeration function
+ */
+static int windows_get_device_list(struct libusb_context *ctx, struct discovered_devs **_discdevs)
+{
+ struct discovered_devs *discdevs = *_discdevs;
+ HDEVINFO dev_info;
+ SP_DEVINFO_DATA dev_info_data;
+ SP_DEVICE_INTERFACE_DETAIL_DATA_A *dev_interface_details = NULL;
+ GUID hid_guid;
+#define MAX_ENUM_GUIDS 64
+ const GUID* guid[MAX_ENUM_GUIDS];
+#define HCD_PASS 0
+#define HUB_PASS 1
+#define GEN_PASS 2
+#define DEV_PASS 3
+#define HID_PASS 4
+ int r = LIBUSB_SUCCESS;
+ unsigned int nb_guids, pass, i, j;
+ char path[MAX_PATH_LENGTH];
+ char strbuf[MAX_PATH_LENGTH];
+ struct libusb_device *dev, *parent_dev;
+ struct windows_device_priv *priv, *parent_priv;
+ char* dev_interface_path = NULL;
+ char* dev_id_path = NULL;
+ unsigned long session_id;
+ DWORD size, reg_type, port_nr, install_state;
+ HKEY key;
+ WCHAR guid_string_w[MAX_GUID_STRING_LENGTH];
+ GUID* if_guid;
+ LONG s;
+ uint8_t api;
+ // Keep a list of newly allocated devs to unref
+ libusb_device** unref_list;
+ unsigned int unref_size = 64;
+ unsigned int unref_cur = 0;
+
+ // PASS 1 : (re)enumerate HCDs (allows for HCD hotplug)
+ // PASS 2 : (re)enumerate HUBS
+ // PASS 3 : (re)enumerate generic USB devices (including driverless)
+ // and list additional USB device interface GUIDs to explore
+ // PASS 4 : (re)enumerate master USB devices that have a device interface
+ // PASS 5+: (re)enumerate device interfaced GUIDs (including HID) and
+ // set the device interfaces.
+
+ // Init the GUID table
+ guid[HCD_PASS] = &GUID_DEVINTERFACE_USB_HOST_CONTROLLER;
+ guid[HUB_PASS] = &GUID_DEVINTERFACE_USB_HUB;
+ guid[GEN_PASS] = NULL;
+ guid[DEV_PASS] = &GUID_DEVINTERFACE_USB_DEVICE;
+ HidD_GetHidGuid(&hid_guid);
+ guid[HID_PASS] = &hid_guid;
+ nb_guids = HID_PASS+1;
+
+ unref_list = malloc(unref_size*sizeof(libusb_device*));
+ if (unref_list == NULL) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ for (pass = 0; ((pass < nb_guids) && (r == LIBUSB_SUCCESS)); pass++) {
+//#define ENUM_DEBUG
+#ifdef ENUM_DEBUG
+ switch(pass) {
+ case HCD_PASS:
+ usbi_dbg("PROCESSING HCDs %s", guid_to_string(guid[pass]));
+ break;
+ case HUB_PASS:
+ usbi_dbg("PROCESSING HUBs %s", guid_to_string(guid[pass]));
+ break;
+ case DEV_PASS:
+ usbi_dbg("PROCESSING DEVs %s", guid_to_string(guid[pass]));
+ break;
+ case GEN_PASS:
+ usbi_dbg("PROCESSING GENs");
+ break;
+ case HID_PASS:
+ usbi_dbg("PROCESSING HIDs %s", guid_to_string(guid[pass]));
+ break;
+ default:
+ usbi_dbg("PROCESSING EXTs %s", guid_to_string(guid[pass]));
+ break;
+ }
+#endif
+ for (i = 0; ; i++) {
+ // safe loop: free up any (unprotected) dynamic resource
+ // NB: this is always executed before breaking the loop
+ safe_free(dev_interface_details);
+ safe_free(dev_interface_path);
+ safe_free(dev_id_path);
+ session_id = 0;
+ priv = parent_priv = NULL;
+ dev = parent_dev = NULL;
+
+ // Safe loop: end of loop conditions
+ if (r != LIBUSB_SUCCESS) {
+ break;
+ }
+ if ((pass == HCD_PASS) && (i == UINT8_MAX)) {
+ usbi_warn(ctx, "program assertion failed - found more than %d buses, skipping the rest.", UINT8_MAX);
+ break;
+ }
+ if (pass != GEN_PASS) {
+ // Except for GEN, all passes deal with device interfaces
+ dev_interface_details = get_interface_details(ctx, &dev_info, &dev_info_data, guid[pass], i);
+ if (dev_interface_details == NULL) {
+ break;
+ } else {
+ dev_interface_path = sanitize_path(dev_interface_details->DevicePath);
+ if (dev_interface_path == NULL) {
+ usbi_warn(ctx, "could not sanitize device interface path for '%s'", dev_interface_details->DevicePath);
+ continue;
+ }
+ }
+ } else {
+ if (!get_devinfo_data(ctx, &dev_info, &dev_info_data, i)) {
+ break;
+ }
+ }
+
+ // Read the Device ID path. This is what we'll use as UID
+ // Note that if the device is plugged in a different port or hub, the Device ID changes
+ if (CM_Get_Device_IDA(dev_info_data.DevInst, path, sizeof(path), 0) != CR_SUCCESS) {
+ usbi_warn(ctx, "could not read the device id path for devinst %X, skipping",
+ dev_info_data.DevInst);
+ continue;
+ }
+ dev_id_path = sanitize_path(path);
+ if (dev_id_path == NULL) {
+ usbi_warn(ctx, "could not sanitize device id path for devinst %X, skipping",
+ dev_info_data.DevInst);
+ continue;
+ }
+#ifdef ENUM_DEBUG
+ usbi_dbg("PRO: %s", dev_id_path);
+#endif
+
+ // The SPDRP_ADDRESS for USB devices is the device port number on the hub
+ port_nr = 0;
+ if ((pass >= HUB_PASS) && (pass <= GEN_PASS)) {
+ if ( (!pSetupDiGetDeviceRegistryPropertyA(dev_info, &dev_info_data, SPDRP_ADDRESS,
+ &reg_type, (BYTE*)&port_nr, 4, &size))
+ || (size != 4) ) {
+ usbi_warn(ctx, "could not retrieve port number for device '%s', skipping: %s",
+ dev_id_path, windows_error_str(0));
+ continue;
+ }
+ }
+
+ // Set API to use or get additional data from generic pass
+ api = USB_API_UNSUPPORTED;
+ switch (pass) {
+ case HCD_PASS:
+ break;
+ case GEN_PASS:
+ // We use the GEN pass to detect driverless devices...
+ size = sizeof(strbuf);
+ if (!pSetupDiGetDeviceRegistryPropertyA(dev_info, &dev_info_data, SPDRP_DRIVER,
+ &reg_type, (BYTE*)strbuf, size, &size)) {
+ usbi_info(ctx, "The following device has no driver: '%s'", dev_id_path);
+ usbi_info(ctx, "libusb will not be able to access it.");
+ }
+ // ...and to add the additional device interface GUIDs
+ key = pSetupDiOpenDevRegKey(dev_info, &dev_info_data, DICS_FLAG_GLOBAL, 0, DIREG_DEV, KEY_READ);
+ if (key != INVALID_HANDLE_VALUE) {
+ size = sizeof(guid_string_w);
+ s = pRegQueryValueExW(key, L"DeviceInterfaceGUIDs", NULL, &reg_type,
+ (BYTE*)guid_string_w, &size);
+ pRegCloseKey(key);
+ if (s == ERROR_SUCCESS) {
+ if (nb_guids >= MAX_ENUM_GUIDS) {
+ // If this assert is ever reported, grow a GUID table dynamically
+ usbi_err(ctx, "program assertion failed: too many GUIDs");
+ LOOP_BREAK(LIBUSB_ERROR_OVERFLOW);
+ }
+ if_guid = calloc(1, sizeof(GUID));
+ pCLSIDFromString(guid_string_w, if_guid);
+ guid[nb_guids++] = if_guid;
+ usbi_dbg("extra GUID: %s", guid_to_string(if_guid));
+ }
+ }
+ break;
+ case HID_PASS:
+ api = USB_API_HID;
+ break;
+ default:
+ // Get the API type (after checking that the driver installation is OK)
+ if ( (!pSetupDiGetDeviceRegistryPropertyA(dev_info, &dev_info_data, SPDRP_INSTALL_STATE,
+ &reg_type, (BYTE*)&install_state, 4, &size))
+ || (size != 4) ){
+ usbi_warn(ctx, "could not detect installation state of driver for '%s': %s",
+ dev_id_path, windows_error_str(0));
+ } else if (install_state != 0) {
+ usbi_warn(ctx, "driver for device '%s' is reporting an issue (code: %d) - skipping",
+ dev_id_path, install_state);
+ continue;
+ }
+ api = get_api_type(ctx, &dev_info, &dev_info_data);
+ break;
+ }
+
+ // Find parent device (for the passes that need it)
+ switch (pass) {
+ case HCD_PASS:
+ case DEV_PASS:
+ case HUB_PASS:
+ break;
+ default:
+ session_id = get_ancestor_session_id(dev_info_data.DevInst, 1);
+ if (session_id == 0) {
+ usbi_err(ctx, "program assertion failed: orphan device '%s'", dev_id_path);
+ LOOP_BREAK(LIBUSB_ERROR_NO_DEVICE);
+ }
+ parent_dev = usbi_get_device_by_session_id(ctx, session_id);
+ // Composite HID devices have double indirection => Check grandparent
+ if (pass == HID_PASS) {
+ session_id = get_ancestor_session_id(dev_info_data.DevInst, 2);
+ if (session_id == 0) {
+ usbi_err(ctx, "program assertion failed: no grandparent for '%s'", dev_id_path);
+ LOOP_BREAK(LIBUSB_ERROR_NO_DEVICE);
+ } else if (session_id == ~0) {
+ usbi_dbg("skipping non USB HID interface '%s'", dev_id_path);
+ continue;
+ }
+ dev = usbi_get_device_by_session_id(ctx, session_id);
+ if (dev == NULL) {
+ usbi_err(ctx, "program assertion failed: unlisted grandparent for '%s'", dev_id_path);
+ LOOP_BREAK(LIBUSB_ERROR_NO_DEVICE);
+ }
+ if (__device_priv(dev)->apib->id == USB_API_COMPOSITE) {
+ parent_dev = dev;
+ }
+ }
+ if (parent_dev == NULL) {
+ // This can occur if the OS only reports a newly plugged device after we started enum,
+ // eg. HID parent not listed on GEN pass, but children listed on HID pass
+ usbi_warn(ctx, "unlisted parent for '%s' (newly connected device?) - ignoring", dev_id_path);
+ continue;
+ }
+ parent_priv = __device_priv(parent_dev);
+ // virtual USB devices are also listed during GEN - don't process these yet
+ if ( (pass == GEN_PASS) && (parent_priv->apib->id != USB_API_HUB) ) {
+ continue;
+ }
+ break;
+ }
+
+ // Create new or match existing device, using the (hashed) device_id as session id
+ if (pass <= DEV_PASS) { // For subsequent passes, we'll lookup the parent
+ // These are the passes that create "new" devices
+ session_id = htab_hash(dev_id_path);
+ dev = usbi_get_device_by_session_id(ctx, session_id);
+ if (dev == NULL) {
+ if (pass == DEV_PASS) {
+ // This can occur if the OS only reports a newly plugged device after we started enum
+ usbi_warn(ctx, "'%s' was only detected in late pass (newly connected device?)"
+ " - ignoring", dev_id_path);
+ continue;
+ }
+ usbi_dbg("allocating new device for session [%X]", session_id);
+ if ((dev = usbi_alloc_device(ctx, session_id)) == NULL) {
+ LOOP_BREAK(LIBUSB_ERROR_NO_MEM);
+ }
+ windows_device_priv_init(dev);
+ // Keep track of devices that need unref
+ unref_list[unref_cur++] = dev;
+ if (unref_cur > unref_size) {
+ unref_size += 64;
+ unref_list = realloc(unref_list, unref_size*sizeof(libusb_device*));
+ if (unref_list == NULL) {
+ usbi_err(ctx, "could not realloc list for unref - aborting.");
+ LOOP_BREAK(LIBUSB_ERROR_NO_MEM);
+ }
+ }
+ } else {
+ usbi_dbg("found existing device for session [%X]", session_id);
+ }
+ priv = __device_priv(dev);
+ }
+
+ // Setup device
+ switch (pass) {
+ case HCD_PASS:
+ dev->bus_number = (uint8_t)(i + 1); // bus 0 is reserved for disconnected
+ dev->device_address = 0;
+ dev->num_configurations = 0;
+ priv->apib = &usb_api_backend[USB_API_HUB];
+ priv->depth = UINT8_MAX; // Overflow to 0 for HCD Hubs
+ priv->path = dev_interface_path; dev_interface_path = NULL;
+ break;
+ case DEV_PASS:
+ // Take care of API initialization
+ priv->path = dev_interface_path; dev_interface_path = NULL;
+ priv->apib = &usb_api_backend[api];
+ switch(api) {
+ case USB_API_COMPOSITE:
+ break;
+ case USB_API_HID:
+ safe_free(priv->hid);
+ priv->hid = calloc(1, sizeof(struct hid_device_priv));
+ if (priv->hid == NULL) {
+ LOOP_BREAK(LIBUSB_ERROR_NO_MEM);
+ }
+ priv->hid->nb_interfaces = 0;
+ break;
+ default:
+ // For other devices, the first interface is the same as the device
+ priv->usb_interface[0].path = malloc(safe_strlen(priv->path)+1);
+ if (priv->usb_interface[0].path != NULL) {
+ safe_strcpy(priv->usb_interface[0].path, safe_strlen(priv->path)+1, priv->path);
+ }
+ // The following is needed if we want API calls to work for both simple
+ // and composite devices.
+ for(j=0; j<USB_MAXINTERFACES; j++) {
+ priv->usb_interface[j].apib = &usb_api_backend[api];
+ }
+ break;
+ }
+ break;
+ case HUB_PASS:
+ priv->apib = &usb_api_backend[api];
+ priv->path = dev_interface_path; dev_interface_path = NULL;
+ break;
+ case GEN_PASS:
+ r = init_device(dev, parent_dev, (uint8_t)port_nr, dev_id_path, dev_info_data.DevInst);
+ if (r == LIBUSB_SUCCESS) {
+ // Append device to the list of discovered devices
+ discdevs = discovered_devs_append(*_discdevs, dev);
+ if (!discdevs) {
+ LOOP_BREAK(LIBUSB_ERROR_NO_MEM);
+ }
+ *_discdevs = discdevs;
+ } else if (r == LIBUSB_ERROR_NO_DEVICE) {
+ // This can occur if the device was disconnected but Windows hasn't
+ // refreshed its enumeration yet - in that case, we ignore the device
+ r = LIBUSB_SUCCESS;
+ }
+ break;
+ default: // HID_PASS and later
+ if (parent_priv->apib->id == USB_API_HID) {
+ usbi_dbg("setting HID interface for [%lX]:", parent_dev->session_data);
+ r = set_hid_interface(ctx, parent_dev, dev_interface_path);
+ if (r != LIBUSB_SUCCESS) LOOP_BREAK(r);
+ dev_interface_path = NULL;
+ } else if (parent_priv->apib->id == USB_API_COMPOSITE) {
+ usbi_dbg("setting composite interface for [%lX]:", parent_dev->session_data);
+ switch (set_composite_interface(ctx, parent_dev, dev_interface_path, dev_id_path, api)) {
+ case LIBUSB_SUCCESS:
+ dev_interface_path = NULL;
+ break;
+ case LIBUSB_ERROR_ACCESS:
+ // interface has already been set => make sure dev_interface_path is freed then
+ break;
+ default:
+ LOOP_BREAK(r);
+ break;
+ }
+ }
+ break;
+ }
+ }
+ }
+
+ // Free any additional GUIDs
+ for (pass = HID_PASS+1; pass < nb_guids; pass++) {
+ safe_free(guid[pass]);
+ }
+
+ // Unref newly allocated devs
+ for (i=0; i<unref_cur; i++) {
+ safe_unref_device(unref_list[i]);
+ }
+ safe_free(unref_list);
+
+ return r;
+}
+
+/*
+ * exit: libusb backend deinitialization function
+ */
+static void windows_exit(void)
+{
+ int i;
+ HANDLE semaphore;
+ char sem_name[11+1+8]; // strlen(libusb_init)+'\0'+(32-bit hex PID)
+
+ sprintf(sem_name, "libusb_init%08X", (unsigned int)GetCurrentProcessId()&0xFFFFFFFF);
+ semaphore = CreateSemaphoreA(NULL, 1, 1, sem_name);
+ if (semaphore == NULL) {
+ return;
+ }
+
+ // A successful wait brings our semaphore count to 0 (unsignaled)
+ // => any concurent wait stalls until the semaphore release
+ if (WaitForSingleObject(semaphore, INFINITE) != WAIT_OBJECT_0) {
+ CloseHandle(semaphore);
+ return;
+ }
+
+ // Only works if exits and inits are balanced exactly
+ if (--concurrent_usage < 0) { // Last exit
+ for (i=0; i<USB_API_MAX; i++) {
+ usb_api_backend[i].exit();
+ }
+ exit_polling();
+
+ if (timer_thread) {
+ SetEvent(timer_request[1]); // actually the signal to quit the thread.
+ if (WAIT_OBJECT_0 != WaitForSingleObject(timer_thread, INFINITE)) {
+ usbi_dbg("could not wait for timer thread to quit");
+ TerminateThread(timer_thread, 1);
+ }
+ CloseHandle(timer_thread);
+ timer_thread = NULL;
+ }
+ for (i = 0; i < 2; i++) {
+ if (timer_request[i]) {
+ CloseHandle(timer_request[i]);
+ timer_request[i] = NULL;
+ }
+ }
+ if (timer_response) {
+ CloseHandle(timer_response);
+ timer_response = NULL;
+ }
+ if (timer_mutex) {
+ CloseHandle(timer_mutex);
+ timer_mutex = NULL;
+ }
+ htab_destroy();
+ }
+
+ ReleaseSemaphore(semaphore, 1, NULL); // increase count back to 1
+ CloseHandle(semaphore);
+}
+
+static int windows_get_device_descriptor(struct libusb_device *dev, unsigned char *buffer, int *host_endian)
+{
+ struct windows_device_priv *priv = __device_priv(dev);
+
+ memcpy(buffer, &(priv->dev_descriptor), DEVICE_DESC_LENGTH);
+ *host_endian = 0;
+
+ return LIBUSB_SUCCESS;
+}
+
+static int windows_get_config_descriptor(struct libusb_device *dev, uint8_t config_index, unsigned char *buffer, size_t len, int *host_endian)
+{
+ struct windows_device_priv *priv = __device_priv(dev);
+ PUSB_CONFIGURATION_DESCRIPTOR config_header;
+ size_t size;
+
+ // config index is zero based
+ if (config_index >= dev->num_configurations)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ if ((priv->config_descriptor == NULL) || (priv->config_descriptor[config_index] == NULL))
+ return LIBUSB_ERROR_NOT_FOUND;
+
+ config_header = (PUSB_CONFIGURATION_DESCRIPTOR)priv->config_descriptor[config_index];
+
+ size = min(config_header->wTotalLength, len);
+ memcpy(buffer, priv->config_descriptor[config_index], size);
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * return the cached copy of the active config descriptor
+ */
+static int windows_get_active_config_descriptor(struct libusb_device *dev, unsigned char *buffer, size_t len, int *host_endian)
+{
+ struct windows_device_priv *priv = __device_priv(dev);
+
+ if (priv->active_config == 0)
+ return LIBUSB_ERROR_NOT_FOUND;
+
+ // config index is zero based
+ return windows_get_config_descriptor(dev, (uint8_t)(priv->active_config-1), buffer, len, host_endian);
+}
+
+static int windows_open(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+
+ if (priv->apib == NULL) {
+ usbi_err(ctx, "program assertion failed - device is not initialized");
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+
+ return priv->apib->open(dev_handle);
+}
+
+static void windows_close(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ priv->apib->close(dev_handle);
+}
+
+static int windows_get_configuration(struct libusb_device_handle *dev_handle, int *config)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ if (priv->active_config == 0) {
+ *config = 0;
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ *config = priv->active_config;
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * from http://msdn.microsoft.com/en-us/library/ms793522.aspx: "The port driver
+ * does not currently expose a service that allows higher-level drivers to set
+ * the configuration."
+ */
+static int windows_set_configuration(struct libusb_device_handle *dev_handle, int config)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ int r = LIBUSB_SUCCESS;
+
+ if (config >= USB_MAXCONFIG)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ r = libusb_control_transfer(dev_handle, LIBUSB_ENDPOINT_OUT |
+ LIBUSB_REQUEST_TYPE_STANDARD | LIBUSB_RECIPIENT_DEVICE,
+ LIBUSB_REQUEST_SET_CONFIGURATION, (uint16_t)config,
+ 0, NULL, 0, 1000);
+
+ if (r == LIBUSB_SUCCESS) {
+ priv->active_config = (uint8_t)config;
+ }
+ return r;
+}
+
+static int windows_claim_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ int r = LIBUSB_SUCCESS;
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ if (iface >= USB_MAXINTERFACES)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ safe_free(priv->usb_interface[iface].endpoint);
+ priv->usb_interface[iface].nb_endpoints= 0;
+
+ r = priv->apib->claim_interface(dev_handle, iface);
+
+ if (r == LIBUSB_SUCCESS) {
+ r = windows_assign_endpoints(dev_handle, iface, 0);
+ }
+
+ return r;
+}
+
+static int windows_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting)
+{
+ int r = LIBUSB_SUCCESS;
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ safe_free(priv->usb_interface[iface].endpoint);
+ priv->usb_interface[iface].nb_endpoints= 0;
+
+ r = priv->apib->set_interface_altsetting(dev_handle, iface, altsetting);
+
+ if (r == LIBUSB_SUCCESS) {
+ r = windows_assign_endpoints(dev_handle, iface, altsetting);
+ }
+
+ return r;
+}
+
+static int windows_release_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ windows_set_interface_altsetting(dev_handle, iface, 0);
+ return priv->apib->release_interface(dev_handle, iface);
+}
+
+static int windows_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ return priv->apib->clear_halt(dev_handle, endpoint);
+}
+
+static int windows_reset_device(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ return priv->apib->reset_device(dev_handle);
+}
+
+// The 3 functions below are unlikely to ever get supported on Windows
+static int windows_kernel_driver_active(struct libusb_device_handle *dev_handle, int iface)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int windows_attach_kernel_driver(struct libusb_device_handle *dev_handle, int iface)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static int windows_detach_kernel_driver(struct libusb_device_handle *dev_handle, int iface)
+{
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+}
+
+static void windows_destroy_device(struct libusb_device *dev)
+{
+ windows_device_priv_release(dev);
+}
+
+static void windows_clear_transfer_priv(struct usbi_transfer *itransfer)
+{
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+
+ usbi_free_fd(transfer_priv->pollable_fd.fd);
+ safe_free(transfer_priv->hid_buffer);
+#if defined(AUTO_CLAIM)
+ // When auto claim is in use, attempt to release the auto-claimed interface
+ auto_release(itransfer);
+#endif
+}
+
+static int submit_bulk_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int r;
+
+ r = priv->apib->submit_bulk_transfer(itransfer);
+ if (r != LIBUSB_SUCCESS) {
+ return r;
+ }
+
+ usbi_add_pollfd(ctx, transfer_priv->pollable_fd.fd,
+ (short)((transfer->endpoint & LIBUSB_ENDPOINT_IN)?POLLIN:POLLOUT));
+#if !defined(DYNAMIC_FDS)
+ usbi_fd_notification(ctx);
+#endif
+
+ return LIBUSB_SUCCESS;
+}
+
+static int submit_iso_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int r;
+
+ r = priv->apib->submit_iso_transfer(itransfer);
+ if (r != LIBUSB_SUCCESS) {
+ return r;
+ }
+
+ usbi_add_pollfd(ctx, transfer_priv->pollable_fd.fd,
+ (short)((transfer->endpoint & LIBUSB_ENDPOINT_IN)?POLLIN:POLLOUT));
+#if !defined(DYNAMIC_FDS)
+ usbi_fd_notification(ctx);
+#endif
+
+ return LIBUSB_SUCCESS;
+}
+
+static int submit_control_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int r;
+
+ r = priv->apib->submit_control_transfer(itransfer);
+ if (r != LIBUSB_SUCCESS) {
+ return r;
+ }
+
+ usbi_add_pollfd(ctx, transfer_priv->pollable_fd.fd, POLLIN);
+#if !defined(DYNAMIC_FDS)
+ usbi_fd_notification(ctx);
+#endif
+
+ return LIBUSB_SUCCESS;
+
+}
+
+static int windows_submit_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+
+ switch (transfer->type) {
+ case LIBUSB_TRANSFER_TYPE_CONTROL:
+ return submit_control_transfer(itransfer);
+ case LIBUSB_TRANSFER_TYPE_BULK:
+ case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+ return submit_bulk_transfer(itransfer);
+ case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+ return submit_iso_transfer(itransfer);
+ default:
+ usbi_err(TRANSFER_CTX(transfer), "unknown endpoint type %d", transfer->type);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+}
+
+static int windows_abort_control(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+
+ return priv->apib->abort_control(itransfer);
+}
+
+static int windows_abort_transfers(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+
+ return priv->apib->abort_transfers(itransfer);
+}
+
+static int windows_cancel_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+#if defined(FORCE_INSTANT_TIMEOUTS)
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+
+ // Forces instant overlapped completion on timeouts - use at your own risks
+ if (itransfer->flags & USBI_TRANSFER_TIMED_OUT) {
+ transfer_priv->pollable_fd.overlapped->Internal &= ~STATUS_PENDING;
+ }
+#endif
+ switch (transfer->type) {
+ case LIBUSB_TRANSFER_TYPE_CONTROL:
+ return windows_abort_control(itransfer);
+ case LIBUSB_TRANSFER_TYPE_BULK:
+ case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+ case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+ return windows_abort_transfers(itransfer);
+ default:
+ usbi_err(ITRANSFER_CTX(itransfer), "unknown endpoint type %d", transfer->type);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+}
+
+static void windows_transfer_callback(struct usbi_transfer *itransfer, uint32_t io_result, uint32_t io_size)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int status;
+
+ usbi_dbg("handling I/O completion with errcode %d", io_result);
+
+ switch(io_result) {
+ case NO_ERROR:
+ status = priv->apib->copy_transfer_data(itransfer, io_size);
+ break;
+ case ERROR_GEN_FAILURE:
+ usbi_dbg("detected endpoint stall");
+ status = LIBUSB_TRANSFER_STALL;
+ break;
+ case ERROR_SEM_TIMEOUT:
+ usbi_dbg("detected semaphore timeout");
+ status = LIBUSB_TRANSFER_TIMED_OUT;
+ break;
+ case ERROR_OPERATION_ABORTED:
+ if (itransfer->flags & USBI_TRANSFER_TIMED_OUT) {
+ usbi_dbg("detected timeout");
+ status = LIBUSB_TRANSFER_TIMED_OUT;
+ } else {
+ usbi_dbg("detected operation aborted");
+ status = LIBUSB_TRANSFER_CANCELLED;
+ }
+ break;
+ default:
+ usbi_err(ITRANSFER_CTX(itransfer), "detected I/O error: %s", windows_error_str(0));
+ status = LIBUSB_TRANSFER_ERROR;
+ break;
+ }
+ windows_clear_transfer_priv(itransfer); // Cancel polling
+ usbi_handle_transfer_completion(itransfer, status);
+}
+
+static void windows_handle_callback (struct usbi_transfer *itransfer, uint32_t io_result, uint32_t io_size)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+
+ switch (transfer->type) {
+ case LIBUSB_TRANSFER_TYPE_CONTROL:
+ case LIBUSB_TRANSFER_TYPE_BULK:
+ case LIBUSB_TRANSFER_TYPE_INTERRUPT:
+ case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
+ windows_transfer_callback (itransfer, io_result, io_size);
+ break;
+ default:
+ usbi_err(ITRANSFER_CTX(itransfer), "unknown endpoint type %d", transfer->type);
+ }
+}
+
+static int windows_handle_events(struct libusb_context *ctx, struct pollfd *fds, nfds_t nfds, int num_ready)
+{
+ struct windows_transfer_priv* transfer_priv = NULL;
+ nfds_t i = 0;
+ bool found = false;
+ struct usbi_transfer *transfer;
+ DWORD io_size, io_result;
+
+ usbi_mutex_lock(&ctx->open_devs_lock);
+ for (i = 0; i < nfds && num_ready > 0; i++) {
+
+ usbi_dbg("checking fd %d with revents = %04x", fds[i].fd, fds[i].revents);
+
+ if (!fds[i].revents) {
+ continue;
+ }
+
+ num_ready--;
+
+ // Because a Windows OVERLAPPED is used for poll emulation,
+ // a pollable fd is created and stored with each transfer
+ usbi_mutex_lock(&ctx->flying_transfers_lock);
+ list_for_each_entry(transfer, &ctx->flying_transfers, list, struct usbi_transfer) {
+ transfer_priv = usbi_transfer_get_os_priv(transfer);
+ if (transfer_priv->pollable_fd.fd == fds[i].fd) {
+ found = true;
+ break;
+ }
+ }
+ usbi_mutex_unlock(&ctx->flying_transfers_lock);
+
+ if (found) {
+ // Handle async requests that completed synchronously first
+ if (HasOverlappedIoCompletedSync(transfer_priv->pollable_fd.overlapped)) {
+ io_result = NO_ERROR;
+ io_size = (DWORD)transfer_priv->pollable_fd.overlapped->InternalHigh;
+ // Regular async overlapped
+ } else if (GetOverlappedResult(transfer_priv->pollable_fd.handle,
+ transfer_priv->pollable_fd.overlapped, &io_size, false)) {
+ io_result = NO_ERROR;
+ } else {
+ io_result = GetLastError();
+ }
+ usbi_remove_pollfd(ctx, transfer_priv->pollable_fd.fd);
+ // let handle_callback free the event using the transfer wfd
+ // If you don't use the transfer wfd, you run a risk of trying to free a
+ // newly allocated wfd that took the place of the one from the transfer.
+ windows_handle_callback(transfer, io_result, io_size);
+ } else {
+ usbi_err(ctx, "could not find a matching transfer for fd %x", fds[i]);
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+ }
+
+ usbi_mutex_unlock(&ctx->open_devs_lock);
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * Monotonic and real time functions
+ */
+unsigned __stdcall windows_clock_gettime_threaded(void* param)
+{
+ LARGE_INTEGER hires_counter, li_frequency;
+ LONG nb_responses;
+ int timer_index;
+
+ // Init - find out if we have access to a monotonic (hires) timer
+ if (!QueryPerformanceFrequency(&li_frequency)) {
+ usbi_dbg("no hires timer available on this platform");
+ hires_frequency = 0;
+ hires_ticks_to_ps = UINT64_C(0);
+ } else {
+ hires_frequency = li_frequency.QuadPart;
+ // The hires frequency can go as high as 4 GHz, so we'll use a conversion
+ // to picoseconds to compute the tv_nsecs part in clock_gettime
+ hires_ticks_to_ps = UINT64_C(1000000000000) / hires_frequency;
+ usbi_dbg("hires timer available (Frequency: %"PRIu64" Hz)", hires_frequency);
+ }
+
+ // Main loop - wait for requests
+ while (1) {
+ timer_index = WaitForMultipleObjects(2, timer_request, FALSE, INFINITE) - WAIT_OBJECT_0;
+ if ( (timer_index != 0) && (timer_index != 1) ) {
+ usbi_dbg("failure to wait on requests: %s", windows_error_str(0));
+ continue;
+ }
+ if (request_count[timer_index] == 0) {
+ // Request already handled
+ ResetEvent(timer_request[timer_index]);
+ // There's still a possiblity that a thread sends a request between the
+ // time we test request_count[] == 0 and we reset the event, in which case
+ // the request would be ignored. The simple solution to that is to test
+ // request_count again and process requests if non zero.
+ if (request_count[timer_index] == 0)
+ continue;
+ }
+ switch (timer_index) {
+ case 0:
+ WaitForSingleObject(timer_mutex, INFINITE);
+ // Requests to this thread are for hires always
+ if (QueryPerformanceCounter(&hires_counter) != 0) {
+ timer_tp.tv_sec = (long)(hires_counter.QuadPart / hires_frequency);
+ timer_tp.tv_nsec = (long)(((hires_counter.QuadPart % hires_frequency)/1000) * hires_ticks_to_ps);
+ } else {
+ // Fallback to real-time if we can't get monotonic value
+ // Note that real-time clock does not wait on the mutex or this thread.
+ windows_clock_gettime(USBI_CLOCK_REALTIME, &timer_tp);
+ }
+ ReleaseMutex(timer_mutex);
+
+ INIT_INTERLOCKEDEXCHANGE;
+ nb_responses = pInterlockedExchange((LONG*)&request_count[0], 0);
+ if ( (nb_responses)
+ && (ReleaseSemaphore(timer_response, nb_responses, NULL) == 0) ) {
+ usbi_dbg("unable to release timer semaphore %d: %s", windows_error_str(0));
+ }
+ continue;
+ case 1: // time to quit
+ usbi_dbg("timer thread quitting");
+ return 0;
+ }
+ }
+ usbi_dbg("ERROR: broken timer thread");
+ return 1;
+}
+
+static int windows_clock_gettime(int clk_id, struct timespec *tp)
+{
+ FILETIME filetime;
+ ULARGE_INTEGER rtime;
+ DWORD r;
+ switch(clk_id) {
+ case USBI_CLOCK_MONOTONIC:
+ if (hires_frequency != 0) {
+ INIT_INTERLOCKEDINCREMENT;
+ while (1) {
+ pInterlockedIncrement((LONG*)&request_count[0]);
+ SetEvent(timer_request[0]);
+ r = WaitForSingleObject(timer_response, TIMER_REQUEST_RETRY_MS);
+ switch(r) {
+ case WAIT_OBJECT_0:
+ WaitForSingleObject(timer_mutex, INFINITE);
+ *tp = timer_tp;
+ ReleaseMutex(timer_mutex);
+ return LIBUSB_SUCCESS;
+ case WAIT_TIMEOUT:
+ usbi_dbg("could not obtain a timer value within reasonable timeframe - too much load?");
+ break; // Retry until successful
+ default:
+ usbi_dbg("WaitForSingleObject failed: %s", windows_error_str(0));
+ return LIBUSB_ERROR_OTHER;
+ }
+ }
+ }
+ // Fall through and return real-time if monotonic was not detected @ timer init
+ case USBI_CLOCK_REALTIME:
+ // We follow http://msdn.microsoft.com/en-us/library/ms724928%28VS.85%29.aspx
+ // with a predef epoch_time to have an epoch that starts at 1970.01.01 00:00
+ // Note however that our resolution is bounded by the Windows system time
+ // functions and is at best of the order of 1 ms (or, usually, worse)
+ GetSystemTimeAsFileTime(&filetime);
+ rtime.LowPart = filetime.dwLowDateTime;
+ rtime.HighPart = filetime.dwHighDateTime;
+ rtime.QuadPart -= epoch_time;
+ tp->tv_sec = (long)(rtime.QuadPart / 10000000);
+ tp->tv_nsec = (long)((rtime.QuadPart % 10000000)*100);
+ return LIBUSB_SUCCESS;
+ default:
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+}
+
+
+// NB: MSVC6 does not support named initializers.
+const struct usbi_os_backend windows_backend = {
+ "Windows",
+ windows_init,
+ windows_exit,
+
+ windows_get_device_list,
+ windows_open,
+ windows_close,
+
+ windows_get_device_descriptor,
+ windows_get_active_config_descriptor,
+ windows_get_config_descriptor,
+
+ windows_get_configuration,
+ windows_set_configuration,
+ windows_claim_interface,
+ windows_release_interface,
+
+ windows_set_interface_altsetting,
+ windows_clear_halt,
+ windows_reset_device,
+
+ windows_kernel_driver_active,
+ windows_detach_kernel_driver,
+ windows_attach_kernel_driver,
+
+ windows_destroy_device,
+
+ windows_submit_transfer,
+ windows_cancel_transfer,
+ windows_clear_transfer_priv,
+
+ windows_handle_events,
+
+ windows_clock_gettime,
+#if defined(USBI_TIMERFD_AVAILABLE)
+ NULL,
+#endif
+ sizeof(struct windows_device_priv),
+ sizeof(struct windows_device_handle_priv),
+ sizeof(struct windows_transfer_priv),
+ 0,
+};
+
+
+/*
+ * USB API backends
+ */
+static int unsupported_init(struct libusb_context *ctx) {
+ return LIBUSB_SUCCESS;
+}
+static int unsupported_exit(void) {
+ return LIBUSB_SUCCESS;
+}
+static int unsupported_open(struct libusb_device_handle *dev_handle) {
+ PRINT_UNSUPPORTED_API(open);
+}
+static void unsupported_close(struct libusb_device_handle *dev_handle) {
+ usbi_dbg("unsupported API call for 'close'");
+}
+static int unsupported_claim_interface(struct libusb_device_handle *dev_handle, int iface) {
+ PRINT_UNSUPPORTED_API(claim_interface);
+}
+static int unsupported_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting) {
+ PRINT_UNSUPPORTED_API(set_interface_altsetting);
+}
+static int unsupported_release_interface(struct libusb_device_handle *dev_handle, int iface) {
+ PRINT_UNSUPPORTED_API(release_interface);
+}
+static int unsupported_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint) {
+ PRINT_UNSUPPORTED_API(clear_halt);
+}
+static int unsupported_reset_device(struct libusb_device_handle *dev_handle) {
+ PRINT_UNSUPPORTED_API(reset_device);
+}
+static int unsupported_submit_bulk_transfer(struct usbi_transfer *itransfer) {
+ PRINT_UNSUPPORTED_API(submit_bulk_transfer);
+}
+static int unsupported_submit_iso_transfer(struct usbi_transfer *itransfer) {
+ PRINT_UNSUPPORTED_API(submit_iso_transfer);
+}
+static int unsupported_submit_control_transfer(struct usbi_transfer *itransfer) {
+ PRINT_UNSUPPORTED_API(submit_control_transfer);
+}
+static int unsupported_abort_control(struct usbi_transfer *itransfer) {
+ PRINT_UNSUPPORTED_API(abort_control);
+}
+static int unsupported_abort_transfers(struct usbi_transfer *itransfer) {
+ PRINT_UNSUPPORTED_API(abort_transfers);
+}
+static int unsupported_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size) {
+ PRINT_UNSUPPORTED_API(copy_transfer_data);
+}
+
+// These names must be uppercase
+const char* hub_driver_names[] = {"USBHUB"};
+const char* composite_driver_names[] = {"USBCCGP"};
+const char* winusb_driver_names[] = {"WINUSB"};
+const char* hid_driver_names[] = {"HIDUSB", "MOUHID", "KBDHID"};
+const struct windows_usb_api_backend usb_api_backend[USB_API_MAX] = {
+ {
+ USB_API_UNSUPPORTED,
+ "Unsupported API",
+ &CLASS_GUID_UNSUPPORTED,
+ NULL,
+ 0,
+ unsupported_init,
+ unsupported_exit,
+ unsupported_open,
+ unsupported_close,
+ unsupported_claim_interface,
+ unsupported_set_interface_altsetting,
+ unsupported_release_interface,
+ unsupported_clear_halt,
+ unsupported_reset_device,
+ unsupported_submit_bulk_transfer,
+ unsupported_submit_iso_transfer,
+ unsupported_submit_control_transfer,
+ unsupported_abort_control,
+ unsupported_abort_transfers,
+ unsupported_copy_transfer_data,
+ }, {
+ USB_API_HUB,
+ "HUB API",
+ &CLASS_GUID_UNSUPPORTED,
+ hub_driver_names,
+ sizeof(hub_driver_names)/sizeof(hub_driver_names[0]),
+ unsupported_init,
+ unsupported_exit,
+ hub_open,
+ hub_close,
+ unsupported_claim_interface,
+ unsupported_set_interface_altsetting,
+ unsupported_release_interface,
+ unsupported_clear_halt,
+ unsupported_reset_device,
+ unsupported_submit_bulk_transfer,
+ unsupported_submit_iso_transfer,
+ unsupported_submit_control_transfer,
+ unsupported_abort_control,
+ unsupported_abort_transfers,
+ unsupported_copy_transfer_data,
+ }, {
+ USB_API_COMPOSITE,
+ "Composite API",
+ &CLASS_GUID_COMPOSITE,
+ composite_driver_names,
+ sizeof(composite_driver_names)/sizeof(composite_driver_names[0]),
+ composite_init,
+ composite_exit,
+ composite_open,
+ composite_close,
+ composite_claim_interface,
+ composite_set_interface_altsetting,
+ composite_release_interface,
+ composite_clear_halt,
+ composite_reset_device,
+ composite_submit_bulk_transfer,
+ composite_submit_iso_transfer,
+ composite_submit_control_transfer,
+ composite_abort_control,
+ composite_abort_transfers,
+ composite_copy_transfer_data,
+ }, {
+ USB_API_WINUSB,
+ "WinUSB API",
+ &CLASS_GUID_LIBUSB_WINUSB,
+ winusb_driver_names,
+ sizeof(winusb_driver_names)/sizeof(winusb_driver_names[0]),
+ winusb_init,
+ winusb_exit,
+ winusb_open,
+ winusb_close,
+ winusb_claim_interface,
+ winusb_set_interface_altsetting,
+ winusb_release_interface,
+ winusb_clear_halt,
+ winusb_reset_device,
+ winusb_submit_bulk_transfer,
+ unsupported_submit_iso_transfer,
+ winusb_submit_control_transfer,
+ winusb_abort_control,
+ winusb_abort_transfers,
+ winusb_copy_transfer_data,
+ }, {
+ USB_API_HID,
+ "HID API",
+ &CLASS_GUID_HID,
+ hid_driver_names,
+ sizeof(hid_driver_names)/sizeof(hid_driver_names[0]),
+ hid_init,
+ hid_exit,
+ hid_open,
+ hid_close,
+ hid_claim_interface,
+ hid_set_interface_altsetting,
+ hid_release_interface,
+ hid_clear_halt,
+ hid_reset_device,
+ hid_submit_bulk_transfer,
+ unsupported_submit_iso_transfer,
+ hid_submit_control_transfer,
+ hid_abort_transfers,
+ hid_abort_transfers,
+ hid_copy_transfer_data,
+ },
+};
+
+
+/*
+ * HUB API functions - only cached descriptors readout for now
+ * might be expanded if
+ */
+static int hub_open(struct libusb_device_handle *dev_handle)
+{
+ return LIBUSB_SUCCESS;
+}
+
+static void hub_close(struct libusb_device_handle *dev_handle)
+{
+}
+
+/*
+ * WinUSB API functions
+ */
+static int winusb_init(struct libusb_context *ctx)
+{
+ DLL_LOAD(winusb.dll, WinUsb_Initialize, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_Free, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_GetAssociatedInterface, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_GetDescriptor, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_QueryInterfaceSettings, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_QueryDeviceInformation, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_SetCurrentAlternateSetting, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_GetCurrentAlternateSetting, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_QueryPipe, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_SetPipePolicy, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_GetPipePolicy, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_ReadPipe, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_WritePipe, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_ControlTransfer, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_ResetPipe, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_AbortPipe, TRUE);
+ DLL_LOAD(winusb.dll, WinUsb_FlushPipe, TRUE);
+
+ api_winusb_available = true;
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_exit(void)
+{
+ return LIBUSB_SUCCESS;
+}
+
+// NB: open and close must ensure that they only handle interface of
+// the right API type, as these functions can be called wholesale from
+// composite_open(), with interfaces belonging to different APIs
+static int winusb_open(struct libusb_device_handle *dev_handle)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+
+ HANDLE file_handle;
+ int i;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ // WinUSB requires a seperate handle for each interface
+ for (i = 0; i < USB_MAXINTERFACES; i++) {
+ if ( (priv->usb_interface[i].path != NULL)
+ && (priv->usb_interface[i].apib->id == USB_API_WINUSB) ) {
+ file_handle = CreateFileA(priv->usb_interface[i].path, GENERIC_WRITE | GENERIC_READ, FILE_SHARE_WRITE | FILE_SHARE_READ,
+ NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);
+ if (file_handle == INVALID_HANDLE_VALUE) {
+ usbi_err(ctx, "could not open device %s (interface %d): %s", priv->usb_interface[i].path, i, windows_error_str(0));
+ switch(GetLastError()) {
+ case ERROR_FILE_NOT_FOUND: // The device was disconnected
+ return LIBUSB_ERROR_NO_DEVICE;
+ case ERROR_ACCESS_DENIED:
+ return LIBUSB_ERROR_ACCESS;
+ default:
+ return LIBUSB_ERROR_IO;
+ }
+ }
+ handle_priv->interface_handle[i].dev_handle = file_handle;
+ }
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+static void winusb_close(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ HANDLE file_handle;
+ int i;
+
+ if (!api_winusb_available)
+ return;
+
+ for (i = 0; i < USB_MAXINTERFACES; i++) {
+ if (priv->usb_interface[i].apib->id == USB_API_WINUSB) {
+ file_handle = handle_priv->interface_handle[i].dev_handle;
+ if ( (file_handle != 0) && (file_handle != INVALID_HANDLE_VALUE)) {
+ CloseHandle(file_handle);
+ }
+ }
+ }
+}
+
+static int winusb_configure_endpoints(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ HANDLE winusb_handle = handle_priv->interface_handle[iface].api_handle;
+ UCHAR policy;
+ ULONG timeout = 0;
+ uint8_t endpoint_address;
+ int i;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ // With handle and enpoints set (in parent), we can setup the default pipe properties
+ // see http://download.microsoft.com/download/D/1/D/D1DD7745-426B-4CC3-A269-ABBBE427C0EF/DVC-T705_DDC08.pptx
+ for (i=-1; i<priv->usb_interface[iface].nb_endpoints; i++) {
+ endpoint_address =(i==-1)?0:priv->usb_interface[iface].endpoint[i];
+ if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address,
+ PIPE_TRANSFER_TIMEOUT, sizeof(ULONG), &timeout)) {
+ usbi_dbg("failed to set PIPE_TRANSFER_TIMEOUT for control endpoint %02X", endpoint_address);
+ }
+ if (i == -1) continue; // Other policies don't apply to control endpoint
+ policy = false;
+ if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address,
+ SHORT_PACKET_TERMINATE, sizeof(UCHAR), &policy)) {
+ usbi_dbg("failed to disable SHORT_PACKET_TERMINATE for endpoint %02X", endpoint_address);
+ }
+ if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address,
+ IGNORE_SHORT_PACKETS, sizeof(UCHAR), &policy)) {
+ usbi_dbg("failed to disable IGNORE_SHORT_PACKETS for endpoint %02X", endpoint_address);
+ }
+ if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address,
+ ALLOW_PARTIAL_READS, sizeof(UCHAR), &policy)) {
+ usbi_dbg("failed to disable ALLOW_PARTIAL_READS for endpoint %02X", endpoint_address);
+ }
+ policy = true;
+ if (!WinUsb_SetPipePolicy(winusb_handle, endpoint_address,
+ AUTO_CLEAR_STALL, sizeof(UCHAR), &policy)) {
+ usbi_dbg("failed to enable AUTO_CLEAR_STALL for endpoint %02X", endpoint_address);
+ }
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_claim_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ bool is_using_usbccgp = (priv->apib->id == USB_API_COMPOSITE);
+ HANDLE file_handle, winusb_handle;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ // If the device is composite, but using the default Windows composite parent driver (usbccgp)
+ // or if it's the first WinUSB interface, we get a handle through WinUsb_Initialize().
+ if ((is_using_usbccgp) || (iface == 0)) {
+ // composite device (independent interfaces) or interface 0
+ winusb_handle = handle_priv->interface_handle[iface].api_handle;
+ file_handle = handle_priv->interface_handle[iface].dev_handle;
+ if ((file_handle == 0) || (file_handle == INVALID_HANDLE_VALUE)) {
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ if (!WinUsb_Initialize(file_handle, &winusb_handle)) {
+ usbi_err(ctx, "could not access interface %d: %s", iface, windows_error_str(0));
+ handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE;
+
+ switch(GetLastError()) {
+ case ERROR_BAD_COMMAND: // The device was disconnected
+ return LIBUSB_ERROR_NO_DEVICE;
+ default:
+ usbi_err(ctx, "could not claim interface %d: %s", iface, windows_error_str(0));
+ return LIBUSB_ERROR_ACCESS;
+ }
+ }
+ handle_priv->interface_handle[iface].api_handle = winusb_handle;
+ } else {
+ // For all other interfaces, use WinUsb_GetAssociatedInterface()
+ winusb_handle = handle_priv->interface_handle[0].api_handle;
+ // It is a requirement for multiple interface devices on Windows that, to you
+ // must first claim the first interface before you claim the others
+ if ((winusb_handle == 0) || (winusb_handle == INVALID_HANDLE_VALUE)) {
+#if defined(AUTO_CLAIM)
+ file_handle = handle_priv->interface_handle[0].dev_handle;
+ if (WinUsb_Initialize(file_handle, &winusb_handle)) {
+ handle_priv->interface_handle[0].api_handle = winusb_handle;
+ usbi_warn(ctx, "auto-claimed interface 0 (required to claim %d with WinUSB)", iface);
+ } else {
+ usbi_warn(ctx, "failed to auto-claim interface 0 (required to claim %d with WinUSB)", iface);
+ return LIBUSB_ERROR_ACCESS;
+ }
+#else
+ usbi_warn(ctx, "you must claim interface 0 before you can claim %d with WinUSB", iface);
+ return LIBUSB_ERROR_ACCESS;
+#endif
+ }
+ if (!WinUsb_GetAssociatedInterface(winusb_handle, (UCHAR)(iface-1),
+ &handle_priv->interface_handle[iface].api_handle)) {
+ handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE;
+ switch(GetLastError()) {
+ case ERROR_NO_MORE_ITEMS: // invalid iface
+ return LIBUSB_ERROR_NOT_FOUND;
+ case ERROR_BAD_COMMAND: // The device was disconnected
+ return LIBUSB_ERROR_NO_DEVICE;
+ case ERROR_ALREADY_EXISTS: // already claimed
+ return LIBUSB_ERROR_BUSY;
+ default:
+ usbi_err(ctx, "could not claim interface %d: %s", iface, windows_error_str(0));
+ return LIBUSB_ERROR_ACCESS;
+ }
+ }
+ }
+ usbi_dbg("claimed interface %d", iface);
+ handle_priv->active_interface = iface;
+
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_release_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ HANDLE winusb_handle;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ winusb_handle = handle_priv->interface_handle[iface].api_handle;
+ if ((winusb_handle == 0) || (winusb_handle == INVALID_HANDLE_VALUE)) {
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ WinUsb_Free(winusb_handle);
+ handle_priv->interface_handle[iface].api_handle = INVALID_HANDLE_VALUE;
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * Return the first valid interface (of the same API type), for control transfers
+ */
+static int get_valid_interface(struct libusb_device_handle *dev_handle, int api_id)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ int i;
+
+ if ((api_id < USB_API_WINUSB) || (api_id > USB_API_HID)) {
+ usbi_dbg("unsupported API ID");
+ return -1;
+ }
+
+ for (i=0; i<USB_MAXINTERFACES; i++) {
+ if ( (handle_priv->interface_handle[i].dev_handle != 0)
+ && (handle_priv->interface_handle[i].dev_handle != INVALID_HANDLE_VALUE)
+ && (handle_priv->interface_handle[i].api_handle != 0)
+ && (handle_priv->interface_handle[i].api_handle != INVALID_HANDLE_VALUE)
+ && (priv->usb_interface[i].apib->id == api_id) ) {
+ return i;
+ }
+ }
+ return -1;
+}
+
+/*
+ * Lookup interface by endpoint address. -1 if not found
+ */
+static int interface_by_endpoint(struct windows_device_priv *priv,
+ struct windows_device_handle_priv *handle_priv, uint8_t endpoint_address)
+{
+ int i, j;
+ for (i=0; i<USB_MAXINTERFACES; i++) {
+ if (handle_priv->interface_handle[i].api_handle == INVALID_HANDLE_VALUE)
+ continue;
+ if (handle_priv->interface_handle[i].api_handle == 0)
+ continue;
+ if (priv->usb_interface[i].endpoint == NULL)
+ continue;
+ for (j=0; j<priv->usb_interface[i].nb_endpoints; j++) {
+ if (priv->usb_interface[i].endpoint[j] == endpoint_address) {
+ return i;
+ }
+ }
+ }
+ return -1;
+}
+
+static int winusb_submit_control_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(
+ transfer->dev_handle);
+ WINUSB_SETUP_PACKET *setup = (WINUSB_SETUP_PACKET *) transfer->buffer;
+ ULONG size;
+ HANDLE winusb_handle;
+ int current_interface;
+ struct winfd wfd;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ transfer_priv->pollable_fd = INVALID_WINFD;
+ size = transfer->length - LIBUSB_CONTROL_SETUP_SIZE;
+
+ if (size > MAX_CTRL_BUFFER_LENGTH)
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ current_interface = get_valid_interface(transfer->dev_handle, USB_API_WINUSB);
+ if (current_interface < 0) {
+#if defined(AUTO_CLAIM)
+ if (auto_claim(transfer, &current_interface, USB_API_WINUSB) != LIBUSB_SUCCESS) {
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+#else
+ usbi_warn(ctx, "no interface available for control transfer");
+ return LIBUSB_ERROR_NOT_FOUND;
+#endif
+ }
+
+ usbi_dbg("will use interface %d", current_interface);
+ winusb_handle = handle_priv->interface_handle[current_interface].api_handle;
+
+ wfd = usbi_create_fd(winusb_handle, _O_RDONLY);
+ // Always use the handle returned from usbi_create_fd (wfd.handle)
+ if (wfd.fd < 0) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ if (!WinUsb_ControlTransfer(wfd.handle, *setup, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, size, NULL, wfd.overlapped)) {
+ if(GetLastError() != ERROR_IO_PENDING) {
+ usbi_err(ctx, "WinUsb_ControlTransfer failed: %s", windows_error_str(0));
+ usbi_free_fd(wfd.fd);
+ return LIBUSB_ERROR_IO;
+ }
+ } else {
+ wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY;
+ wfd.overlapped->InternalHigh = (DWORD)size;
+ }
+
+ // Use priv_transfer to store data needed for async polling
+ transfer_priv->pollable_fd = wfd;
+ transfer_priv->interface_number = (uint8_t)current_interface;
+
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ HANDLE winusb_handle;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ if (altsetting > 255) {
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ winusb_handle = handle_priv->interface_handle[iface].api_handle;
+ if ((winusb_handle == 0) || (winusb_handle == INVALID_HANDLE_VALUE)) {
+ usbi_err(ctx, "interface must be claimed first");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ if (!WinUsb_SetCurrentAlternateSetting(winusb_handle, (UCHAR)altsetting)) {
+ usbi_err(ctx, "WinUsb_SetCurrentAlternateSetting failed: %s", windows_error_str(0));
+ return LIBUSB_ERROR_IO;
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_submit_bulk_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ HANDLE winusb_handle;
+ bool direction_in, ret;
+ int current_interface;
+ struct winfd wfd;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ transfer_priv->pollable_fd = INVALID_WINFD;
+
+ current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ usbi_dbg("matched endpoint %02X with interface %d", transfer->endpoint, current_interface);
+
+ winusb_handle = handle_priv->interface_handle[current_interface].api_handle;
+ direction_in = transfer->endpoint & LIBUSB_ENDPOINT_IN;
+
+ wfd = usbi_create_fd(winusb_handle, direction_in?_O_RDONLY:_O_WRONLY);
+ // Always use the handle returned from usbi_create_fd (wfd.handle)
+ if (wfd.fd < 0) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ if (direction_in) {
+ usbi_dbg("reading %d bytes", transfer->length);
+ ret = WinUsb_ReadPipe(wfd.handle, transfer->endpoint, transfer->buffer, transfer->length, NULL, wfd.overlapped);
+ } else {
+ usbi_dbg("writing %d bytes", transfer->length);
+ ret = WinUsb_WritePipe(wfd.handle, transfer->endpoint, transfer->buffer, transfer->length, NULL, wfd.overlapped);
+ }
+ if (!ret) {
+ if(GetLastError() != ERROR_IO_PENDING) {
+ usbi_err(ctx, "WinUsb_Pipe Transfer failed: %s", windows_error_str(0));
+ usbi_free_fd(wfd.fd);
+ return LIBUSB_ERROR_IO;
+ }
+ } else {
+ wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY;
+ wfd.overlapped->InternalHigh = (DWORD)transfer->length;
+ }
+
+ transfer_priv->pollable_fd = wfd;
+ transfer_priv->interface_number = (uint8_t)current_interface;
+
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ HANDLE winusb_handle;
+ int current_interface;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ current_interface = interface_by_endpoint(priv, handle_priv, endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cannot clear");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ usbi_dbg("matched endpoint %02X with interface %d", endpoint, current_interface);
+ winusb_handle = handle_priv->interface_handle[current_interface].api_handle;
+
+ if (!WinUsb_ResetPipe(winusb_handle, endpoint)) {
+ usbi_err(ctx, "WinUsb_ResetPipe failed: %s", windows_error_str(0));
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * from http://www.winvistatips.com/winusb-bugchecks-t335323.html (confirmed
+ * through testing as well):
+ * "You can not call WinUsb_AbortPipe on control pipe. You can possibly cancel
+ * the control transfer using CancelIo"
+ */
+static int winusb_abort_control(struct usbi_transfer *itransfer)
+{
+ // Cancelling of the I/O is done in the parent
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_abort_transfers(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ HANDLE winusb_handle;
+ int current_interface;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ current_interface = transfer_priv->interface_number;
+ if ((current_interface < 0) || (current_interface >= USB_MAXINTERFACES)) {
+ usbi_err(ctx, "program assertion failed: invalid interface_number");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+ usbi_dbg("will use interface %d", current_interface);
+
+ winusb_handle = handle_priv->interface_handle[current_interface].api_handle;
+
+ if (!WinUsb_AbortPipe(winusb_handle, transfer->endpoint)) {
+ usbi_err(ctx, "WinUsb_AbortPipe failed: %s", windows_error_str(0));
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+/*
+ * from the "How to Use WinUSB to Communicate with a USB Device" Microsoft white paper
+ * (http://www.microsoft.com/whdc/connect/usb/winusb_howto.mspx):
+ * "WinUSB does not support host-initiated reset port and cycle port operations" and
+ * IOCTL_INTERNAL_USB_CYCLE_PORT is only available in kernel mode and the
+ * IOCTL_USB_HUB_CYCLE_PORT ioctl was removed from Vista => the best we can do is
+ * cycle the pipes (and even then, the control pipe can not be reset using WinUSB)
+ */
+// TODO (post hotplug): see if we can force eject the device and redetect it (reuse hotplug?)
+static int winusb_reset_device(struct libusb_device_handle *dev_handle)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ struct winfd wfd;
+ HANDLE winusb_handle;
+ int i, j;
+
+ CHECK_WINUSB_AVAILABLE;
+
+ // Reset any available pipe (except control)
+ for (i=0; i<USB_MAXINTERFACES; i++) {
+ winusb_handle = handle_priv->interface_handle[i].api_handle;
+ for (wfd = handle_to_winfd(winusb_handle); wfd.fd > 0;)
+ {
+ // Cancel any pollable I/O
+ usbi_remove_pollfd(ctx, wfd.fd);
+ usbi_free_fd(wfd.fd);
+ wfd = handle_to_winfd(winusb_handle);
+ }
+
+ if ( (winusb_handle != 0) && (winusb_handle != INVALID_HANDLE_VALUE)) {
+ for (j=0; j<priv->usb_interface[i].nb_endpoints; j++) {
+ usbi_dbg("resetting ep %02X", priv->usb_interface[i].endpoint[j]);
+ if (!WinUsb_AbortPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) {
+ usbi_err(ctx, "WinUsb_AbortPipe (pipe address %02X) failed: %s",
+ priv->usb_interface[i].endpoint[j], windows_error_str(0));
+ }
+ // FlushPipe seems to fail on OUT pipes
+ if ( (priv->usb_interface[i].endpoint[j] & LIBUSB_ENDPOINT_IN)
+ && (!WinUsb_FlushPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) ) {
+ usbi_err(ctx, "WinUsb_FlushPipe (pipe address %02X) failed: %s",
+ priv->usb_interface[i].endpoint[j], windows_error_str(0));
+ }
+ if (!WinUsb_ResetPipe(winusb_handle, priv->usb_interface[i].endpoint[j])) {
+ usbi_err(ctx, "WinUsb_ResetPipe (pipe address %02X) failed: %s",
+ priv->usb_interface[i].endpoint[j], windows_error_str(0));
+ }
+ }
+ }
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+static int winusb_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size)
+{
+ itransfer->transferred += io_size;
+ return LIBUSB_TRANSFER_COMPLETED;
+}
+
+/*
+ * Internal HID Support functions (from libusb-win32)
+ * Note that functions that complete data transfer synchronously must return
+ * LIBUSB_COMPLETED instead of LIBUSB_SUCCESS
+ */
+static int _hid_get_hid_descriptor(struct hid_device_priv* dev, void *data, size_t *size);
+static int _hid_get_report_descriptor(struct hid_device_priv* dev, void *data, size_t *size);
+
+static int _hid_wcslen(WCHAR *str)
+{
+ int i = 0;
+ while (str[i] && (str[i] != 0x409)) {
+ i++;
+ }
+ return i;
+}
+
+static int _hid_get_device_descriptor(struct hid_device_priv* dev, void *data, size_t *size)
+{
+ struct libusb_device_descriptor d;
+
+ d.bLength = LIBUSB_DT_DEVICE_SIZE;
+ d.bDescriptorType = LIBUSB_DT_DEVICE;
+ d.bcdUSB = 0x0200; /* 2.00 */
+ d.bDeviceClass = 0;
+ d.bDeviceSubClass = 0;
+ d.bDeviceProtocol = 0;
+ d.bMaxPacketSize0 = 64; /* fix this! */
+ d.idVendor = (uint16_t)dev->vid;
+ d.idProduct = (uint16_t)dev->pid;
+ d.bcdDevice = 0x0100;
+ d.iManufacturer = dev->string_index[0];
+ d.iProduct = dev->string_index[1];
+ d.iSerialNumber = dev->string_index[2];
+ d.bNumConfigurations = 1;
+
+ if (*size > LIBUSB_DT_DEVICE_SIZE)
+ *size = LIBUSB_DT_DEVICE_SIZE;
+ memcpy(data, &d, *size);
+ return LIBUSB_COMPLETED;
+}
+
+static int _hid_get_config_descriptor(struct hid_device_priv* dev, void *data, size_t *size)
+{
+ char num_endpoints = 0;
+ size_t config_total_len = 0;
+ char tmp[HID_MAX_CONFIG_DESC_SIZE];
+ struct libusb_config_descriptor *cd;
+ struct libusb_interface_descriptor *id;
+ struct libusb_hid_descriptor *hd;
+ struct libusb_endpoint_descriptor *ed;
+ size_t tmp_size;
+
+ if (dev->input_report_size)
+ num_endpoints++;
+ if (dev->output_report_size)
+ num_endpoints++;
+
+ config_total_len = LIBUSB_DT_CONFIG_SIZE + LIBUSB_DT_INTERFACE_SIZE
+ + LIBUSB_DT_HID_SIZE + num_endpoints * LIBUSB_DT_ENDPOINT_SIZE;
+
+
+ cd = (struct libusb_config_descriptor *)tmp;
+ id = (struct libusb_interface_descriptor *)(tmp + LIBUSB_DT_CONFIG_SIZE);
+ hd = (struct libusb_hid_descriptor *)(tmp + LIBUSB_DT_CONFIG_SIZE
+ + LIBUSB_DT_INTERFACE_SIZE);
+ ed = (struct libusb_endpoint_descriptor *)(tmp + LIBUSB_DT_CONFIG_SIZE
+ + LIBUSB_DT_INTERFACE_SIZE
+ + LIBUSB_DT_HID_SIZE);
+
+ cd->bLength = LIBUSB_DT_CONFIG_SIZE;
+ cd->bDescriptorType = LIBUSB_DT_CONFIG;
+ cd->wTotalLength = (uint16_t) config_total_len;
+ cd->bNumInterfaces = 1;
+ cd->bConfigurationValue = 1;
+ cd->iConfiguration = 0;
+ cd->bmAttributes = 1 << 7; /* bus powered */
+ cd->MaxPower = 50;
+
+ id->bLength = LIBUSB_DT_INTERFACE_SIZE;
+ id->bDescriptorType = LIBUSB_DT_INTERFACE;
+ id->bInterfaceNumber = 0;
+ id->bAlternateSetting = 0;
+ id->bNumEndpoints = num_endpoints;
+ id->bInterfaceClass = 3;
+ id->bInterfaceSubClass = 0;
+ id->bInterfaceProtocol = 0;
+ id->iInterface = 0;
+
+ tmp_size = LIBUSB_DT_HID_SIZE;
+ _hid_get_hid_descriptor(dev, hd, &tmp_size);
+
+ if (dev->input_report_size) {
+ ed->bLength = LIBUSB_DT_ENDPOINT_SIZE;
+ ed->bDescriptorType = LIBUSB_DT_ENDPOINT;
+ ed->bEndpointAddress = HID_IN_EP;
+ ed->bmAttributes = 3;
+ ed->wMaxPacketSize = dev->input_report_size - 1;
+ ed->bInterval = 10;
+
+ ed++;
+ }
+
+ if (dev->output_report_size) {
+ ed->bLength = LIBUSB_DT_ENDPOINT_SIZE;
+ ed->bDescriptorType = LIBUSB_DT_ENDPOINT;
+ ed->bEndpointAddress = HID_OUT_EP;
+ ed->bmAttributes = 3;
+ ed->wMaxPacketSize = dev->output_report_size - 1;
+ ed->bInterval = 10;
+ }
+
+ if (*size > config_total_len)
+ *size = config_total_len;
+ memcpy(data, tmp, *size);
+ return LIBUSB_COMPLETED;
+}
+
+static int _hid_get_string_descriptor(struct hid_device_priv* dev, int _index,
+ void *data, size_t *size)
+{
+ void *tmp = NULL;
+ size_t tmp_size = 0;
+ int i;
+
+ /* language ID, EN-US */
+ char string_langid[] = {
+ 0x09,
+ 0x04
+ };
+
+ if ((*size < 2) || (*size > 255)) {
+ return LIBUSB_ERROR_OVERFLOW;
+ }
+
+ if (_index == 0) {
+ tmp = string_langid;
+ tmp_size = sizeof(string_langid)+2;
+ } else {
+ for (i=0; i<3; i++) {
+ if (_index == (dev->string_index[i])) {
+ tmp = dev->string[i];
+ tmp_size = (_hid_wcslen(dev->string[i])+1) * sizeof(WCHAR);
+ break;
+ }
+ }
+ if (i == 3) { // not found
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+ }
+
+ if(!tmp_size) {
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ if (tmp_size < *size) {
+ *size = tmp_size;
+ }
+ // 2 byte header
+ ((uint8_t*)data)[0] = (uint8_t)*size;
+ ((uint8_t*)data)[1] = LIBUSB_DT_STRING;
+ memcpy((uint8_t*)data+2, tmp, *size-2);
+ return LIBUSB_COMPLETED;
+}
+
+static int _hid_get_hid_descriptor(struct hid_device_priv* dev, void *data, size_t *size)
+{
+ struct libusb_hid_descriptor d;
+ uint8_t tmp[MAX_HID_DESCRIPTOR_SIZE];
+ size_t report_len = MAX_HID_DESCRIPTOR_SIZE;
+
+ _hid_get_report_descriptor(dev, tmp, &report_len);
+
+ d.bLength = LIBUSB_DT_HID_SIZE;
+ d.bDescriptorType = LIBUSB_DT_HID;
+ d.bcdHID = 0x0110; /* 1.10 */
+ d.bCountryCode = 0;
+ d.bNumDescriptors = 1;
+ d.bClassDescriptorType = LIBUSB_DT_REPORT;
+ d.wClassDescriptorLength = (uint16_t)report_len;
+
+ if (*size > LIBUSB_DT_HID_SIZE)
+ *size = LIBUSB_DT_HID_SIZE;
+ memcpy(data, &d, *size);
+ return LIBUSB_COMPLETED;
+}
+
+static int _hid_get_report_descriptor(struct hid_device_priv* dev, void *data, size_t *size)
+{
+ uint8_t d[MAX_HID_DESCRIPTOR_SIZE];
+ size_t i = 0;
+
+ /* usage page (0xFFA0 == vendor defined) */
+ d[i++] = 0x06; d[i++] = 0xA0; d[i++] = 0xFF;
+ /* usage (vendor defined) */
+ d[i++] = 0x09; d[i++] = 0x01;
+ /* start collection (application) */
+ d[i++] = 0xA1; d[i++] = 0x01;
+ /* input report */
+ if (dev->input_report_size) {
+ /* usage (vendor defined) */
+ d[i++] = 0x09; d[i++] = 0x01;
+ /* logical minimum (0) */
+ d[i++] = 0x15; d[i++] = 0x00;
+ /* logical maximum (255) */
+ d[i++] = 0x25; d[i++] = 0xFF;
+ /* report size (8 bits) */
+ d[i++] = 0x75; d[i++] = 0x08;
+ /* report count */
+ d[i++] = 0x95; d[i++] = (uint8_t)dev->input_report_size - 1;
+ /* input (data, variable, absolute) */
+ d[i++] = 0x81; d[i++] = 0x00;
+ }
+ /* output report */
+ if (dev->output_report_size) {
+ /* usage (vendor defined) */
+ d[i++] = 0x09; d[i++] = 0x02;
+ /* logical minimum (0) */
+ d[i++] = 0x15; d[i++] = 0x00;
+ /* logical maximum (255) */
+ d[i++] = 0x25; d[i++] = 0xFF;
+ /* report size (8 bits) */
+ d[i++] = 0x75; d[i++] = 0x08;
+ /* report count */
+ d[i++] = 0x95; d[i++] = (uint8_t)dev->output_report_size - 1;
+ /* output (data, variable, absolute) */
+ d[i++] = 0x91; d[i++] = 0x00;
+ }
+ /* feature report */
+ if (dev->feature_report_size) {
+ /* usage (vendor defined) */
+ d[i++] = 0x09; d[i++] = 0x03;
+ /* logical minimum (0) */
+ d[i++] = 0x15; d[i++] = 0x00;
+ /* logical maximum (255) */
+ d[i++] = 0x25; d[i++] = 0xFF;
+ /* report size (8 bits) */
+ d[i++] = 0x75; d[i++] = 0x08;
+ /* report count */
+ d[i++] = 0x95; d[i++] = (uint8_t)dev->feature_report_size - 1;
+ /* feature (data, variable, absolute) */
+ d[i++] = 0xb2; d[i++] = 0x02; d[i++] = 0x01;
+ }
+
+ /* end collection */
+ d[i++] = 0xC0;
+
+ if (*size > i)
+ *size = i;
+ memcpy(data, d, *size);
+ return LIBUSB_COMPLETED;
+}
+
+static int _hid_get_descriptor(struct hid_device_priv* dev, HANDLE hid_handle, int recipient,
+ int type, int _index, void *data, size_t *size)
+{
+ switch(type) {
+ case LIBUSB_DT_DEVICE:
+ usbi_dbg("LIBUSB_DT_DEVICE");
+ return _hid_get_device_descriptor(dev, data, size);
+ case LIBUSB_DT_CONFIG:
+ usbi_dbg("LIBUSB_DT_CONFIG");
+ if (!_index)
+ return _hid_get_config_descriptor(dev, data, size);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ case LIBUSB_DT_STRING:
+ usbi_dbg("LIBUSB_DT_STRING");
+ return _hid_get_string_descriptor(dev, _index, data, size);
+ case LIBUSB_DT_HID:
+ usbi_dbg("LIBUSB_DT_HID");
+ if (!_index)
+ return _hid_get_hid_descriptor(dev, data, size);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ case LIBUSB_DT_REPORT:
+ usbi_dbg("LIBUSB_DT_REPORT");
+ if (!_index)
+ return _hid_get_report_descriptor(dev, data, size);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ case LIBUSB_DT_PHYSICAL:
+ usbi_dbg("LIBUSB_DT_PHYSICAL");
+ if (HidD_GetPhysicalDescriptor(hid_handle, data, (ULONG)*size))
+ return LIBUSB_COMPLETED;
+ return LIBUSB_ERROR_OTHER;
+ }
+ usbi_dbg("unsupported");
+ return LIBUSB_ERROR_INVALID_PARAM;
+}
+
+static int _hid_get_report(struct hid_device_priv* dev, HANDLE hid_handle, int id, void *data,
+ struct windows_transfer_priv *tp, size_t *size, OVERLAPPED* overlapped,
+ int report_type)
+{
+ uint8_t *buf;
+ DWORD ioctl_code, read_size, expected_size = (DWORD)*size;
+ int r = LIBUSB_SUCCESS;
+
+ if (tp->hid_buffer != NULL) {
+ usbi_dbg("program assertion failed: hid_buffer is not NULL");
+ }
+
+ if ((*size == 0) || (*size > MAX_HID_REPORT_SIZE)) {
+ usbi_dbg("invalid size (%d)", *size);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ switch (report_type) {
+ case HID_REPORT_TYPE_INPUT:
+ ioctl_code = IOCTL_HID_GET_INPUT_REPORT;
+ break;
+ case HID_REPORT_TYPE_FEATURE:
+ ioctl_code = IOCTL_HID_GET_FEATURE;
+ break;
+ default:
+ usbi_dbg("unknown HID report type %d", report_type);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ // Add a trailing byte to detect overflows
+ buf = (uint8_t*)calloc(expected_size+1, 1);
+ if (buf == NULL) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+ buf[0] = (uint8_t)id; // Must be set always
+ usbi_dbg("report ID: 0x%02X", buf[0]);
+
+ tp->hid_expected_size = expected_size;
+ read_size = expected_size;
+
+ // NB: The size returned by DeviceIoControl doesn't include report IDs when not in use (0)
+ if (!DeviceIoControl(hid_handle, ioctl_code, buf, expected_size+1,
+ buf, expected_size+1, &read_size, overlapped)) {
+ if (GetLastError() != ERROR_IO_PENDING) {
+ usbi_dbg("Failed to Read HID Report: %s", windows_error_str(0));
+ safe_free(buf);
+ return LIBUSB_ERROR_IO;
+ }
+ // Asynchronous wait
+ tp->hid_buffer = buf;
+ tp->hid_dest = data; // copy dest, as not necessarily the start of the transfer buffer
+ return LIBUSB_SUCCESS;
+ }
+
+ // Transfer completed synchronously => copy and discard extra buffer
+ if (read_size == 0) {
+ usbi_warn(NULL, "program assertion failed - read completed synchronously, but no data was read");
+ *size = 0;
+ } else {
+ if (buf[0] != id) {
+ usbi_warn(NULL, "mismatched report ID (data is %02X, parameter is %02X)", buf[0], id);
+ }
+ if ((size_t)read_size > expected_size) {
+ r = LIBUSB_ERROR_OVERFLOW;
+ usbi_dbg("OVERFLOW!");
+ } else {
+ r = LIBUSB_COMPLETED;
+ }
+
+ *size = MIN((size_t)read_size, *size);
+ if (id == 0) {
+ // Discard report ID
+ memcpy(data, buf+1, *size);
+ } else {
+ memcpy(data, buf, *size);
+ }
+ }
+ safe_free(buf);
+ return r;
+}
+
+static int _hid_set_report(struct hid_device_priv* dev, HANDLE hid_handle, int id, void *data,
+ struct windows_transfer_priv *tp, size_t *size, OVERLAPPED* overlapped,
+ int report_type)
+{
+ uint8_t *buf = NULL;
+ DWORD ioctl_code, write_size= (DWORD)*size;
+
+ if (tp->hid_buffer != NULL) {
+ usbi_dbg("program assertion failed: hid_buffer is not NULL");
+ }
+
+ if ((*size == 0) || (*size > MAX_HID_REPORT_SIZE)) {
+ usbi_dbg("invalid size (%d)", *size);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ switch (report_type) {
+ case HID_REPORT_TYPE_OUTPUT:
+ ioctl_code = IOCTL_HID_SET_OUTPUT_REPORT;
+ break;
+ case HID_REPORT_TYPE_FEATURE:
+ ioctl_code = IOCTL_HID_SET_FEATURE;
+ break;
+ default:
+ usbi_dbg("unknown HID report type %d", report_type);
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ usbi_dbg("report ID: 0x%02X", id);
+ // When report IDs are not used (i.e. when id == 0), we must add
+ // a null report ID. Otherwise, we just use original data buffer
+ if (id == 0) {
+ write_size++;
+ }
+ buf = malloc(write_size);
+ if (buf == NULL) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+ if (id == 0) {
+ buf[0] = 0;
+ memcpy(buf + 1, data, *size);
+ } else {
+ // This seems like a waste, but if we don't duplicate the
+ // data, we'll get issues when freeing hid_buffer
+ memcpy(buf, data, *size);
+ if (buf[0] != id) {
+ usbi_warn(NULL, "mismatched report ID (data is %02X, parameter is %02X)", buf[0], id);
+ }
+ }
+
+ // NB: The size returned by DeviceIoControl doesn't include report IDs when not in use (0)
+ if (!DeviceIoControl(hid_handle, ioctl_code, buf, write_size,
+ buf, write_size, &write_size, overlapped)) {
+ if (GetLastError() != ERROR_IO_PENDING) {
+ usbi_dbg("Failed to Write HID Output Report: %s", windows_error_str(0));
+ safe_free(buf);
+ return LIBUSB_ERROR_IO;
+ }
+ tp->hid_buffer = buf;
+ tp->hid_dest = NULL;
+ return LIBUSB_SUCCESS;
+ }
+
+ // Transfer completed synchronously
+ *size = write_size;
+ if (write_size == 0) {
+ usbi_dbg("program assertion failed - write completed synchronously, but no data was written");
+ }
+ safe_free(buf);
+ return LIBUSB_COMPLETED;
+}
+
+static int _hid_class_request(struct hid_device_priv* dev, HANDLE hid_handle, int request_type,
+ int request, int value, int _index, void *data, struct windows_transfer_priv *tp,
+ size_t *size, OVERLAPPED* overlapped)
+{
+ int report_type = (value >> 8) & 0xFF;
+ int report_id = value & 0xFF;
+
+ if ( (LIBUSB_REQ_RECIPIENT(request_type) != LIBUSB_RECIPIENT_INTERFACE)
+ && (LIBUSB_REQ_RECIPIENT(request_type) != LIBUSB_RECIPIENT_DEVICE) )
+ return LIBUSB_ERROR_INVALID_PARAM;
+
+ if (LIBUSB_REQ_OUT(request_type) && request == HID_REQ_SET_REPORT)
+ return _hid_set_report(dev, hid_handle, report_id, data, tp, size, overlapped, report_type);
+
+ if (LIBUSB_REQ_IN(request_type) && request == HID_REQ_GET_REPORT)
+ return _hid_get_report(dev, hid_handle, report_id, data, tp, size, overlapped, report_type);
+
+ return LIBUSB_ERROR_INVALID_PARAM;
+}
+
+
+/*
+ * HID API functions
+ */
+static int hid_init(struct libusb_context *ctx)
+{
+ DLL_LOAD(hid.dll, HidD_GetAttributes, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetHidGuid, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetPreparsedData, TRUE);
+ DLL_LOAD(hid.dll, HidD_FreePreparsedData, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetManufacturerString, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetProductString, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetSerialNumberString, TRUE);
+ DLL_LOAD(hid.dll, HidP_GetCaps, TRUE);
+ DLL_LOAD(hid.dll, HidD_SetNumInputBuffers, TRUE);
+ DLL_LOAD(hid.dll, HidD_SetFeature, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetFeature, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetPhysicalDescriptor, TRUE);
+ DLL_LOAD(hid.dll, HidD_GetInputReport, FALSE);
+ DLL_LOAD(hid.dll, HidD_SetOutputReport, FALSE);
+ DLL_LOAD(hid.dll, HidD_FlushQueue, TRUE);
+ DLL_LOAD(hid.dll, HidP_GetValueCaps, TRUE);
+
+ api_hid_available = true;
+ return LIBUSB_SUCCESS;
+}
+
+static int hid_exit(void)
+{
+ return LIBUSB_SUCCESS;
+}
+
+// NB: open and close must ensure that they only handle interface of
+// the right API type, as these functions can be called wholesale from
+// composite_open(), with interfaces belonging to different APIs
+static int hid_open(struct libusb_device_handle *dev_handle)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+
+ HIDD_ATTRIBUTES hid_attributes;
+ PHIDP_PREPARSED_DATA preparsed_data = NULL;
+ HIDP_CAPS capabilities;
+ HIDP_VALUE_CAPS *value_caps;
+
+ HANDLE hid_handle = INVALID_HANDLE_VALUE;
+ int i, j;
+ // report IDs handling
+ ULONG size[3];
+ char* type[3] = {"input", "output", "feature"};
+ int nb_ids[2]; // zero and nonzero report IDs
+
+ CHECK_HID_AVAILABLE;
+ if (priv->hid == NULL) {
+ usbi_err(ctx, "program assertion failed - private HID structure is unitialized");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ for (i = 0; i < USB_MAXINTERFACES; i++) {
+ if ( (priv->usb_interface[i].path != NULL)
+ && (priv->usb_interface[i].apib->id == USB_API_HID) ) {
+ hid_handle = CreateFileA(priv->usb_interface[i].path, GENERIC_WRITE | GENERIC_READ, FILE_SHARE_WRITE | FILE_SHARE_READ,
+ NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);
+ /*
+ * http://www.lvr.com/hidfaq.htm: Why do I receive "Access denied" when attempting to access my HID?
+ * "Windows 2000 and later have exclusive read/write access to HIDs that are configured as a system
+ * keyboards or mice. An application can obtain a handle to a system keyboard or mouse by not
+ * requesting READ or WRITE access with CreateFile. Applications can then use HidD_SetFeature and
+ * HidD_GetFeature (if the device supports Feature reports)."
+ */
+ if (hid_handle == INVALID_HANDLE_VALUE) {
+ usbi_warn(ctx, "could not open HID device in R/W mode (keyboard or mouse?) - trying without");
+ hid_handle = CreateFileA(priv->usb_interface[i].path, 0, FILE_SHARE_WRITE | FILE_SHARE_READ,
+ NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);
+ if (hid_handle == INVALID_HANDLE_VALUE) {
+ usbi_err(ctx, "could not open device %s (interface %d): %s", priv->path, i, windows_error_str(0));
+ switch(GetLastError()) {
+ case ERROR_FILE_NOT_FOUND: // The device was disconnected
+ return LIBUSB_ERROR_NO_DEVICE;
+ case ERROR_ACCESS_DENIED:
+ return LIBUSB_ERROR_ACCESS;
+ default:
+ return LIBUSB_ERROR_IO;
+ }
+ }
+ priv->usb_interface[i].restricted_functionality = true;
+ }
+ handle_priv->interface_handle[i].api_handle = hid_handle;
+ }
+ }
+
+ hid_attributes.Size = sizeof(hid_attributes);
+ do {
+ if (!HidD_GetAttributes(hid_handle, &hid_attributes)) {
+ usbi_err(ctx, "could not gain access to HID top collection (HidD_GetAttributes)");
+ break;
+ }
+
+ priv->hid->vid = hid_attributes.VendorID;
+ priv->hid->pid = hid_attributes.ProductID;
+
+ // Set the maximum available input buffer size
+ for (i=32; HidD_SetNumInputBuffers(hid_handle, i); i*=2);
+ usbi_dbg("set maximum input buffer size to %d", i/2);
+
+ // Get the maximum input and output report size
+ if (!HidD_GetPreparsedData(hid_handle, &preparsed_data) || !preparsed_data) {
+ usbi_err(ctx, "could not read HID preparsed data (HidD_GetPreparsedData)");
+ break;
+ }
+ if (HidP_GetCaps(preparsed_data, &capabilities) != HIDP_STATUS_SUCCESS) {
+ usbi_err(ctx, "could not parse HID capabilities (HidP_GetCaps)");
+ break;
+ }
+
+ // Find out if interrupt will need report IDs
+ size[0] = capabilities.NumberInputValueCaps;
+ size[1] = capabilities.NumberOutputValueCaps;
+ size[2] = capabilities.NumberFeatureValueCaps;
+ for (j=0; j<3; j++) {
+ usbi_dbg("%d HID %s report value(s) found", size[j], type[j]);
+ priv->hid->uses_report_ids[j] = false;
+ if (size[j] > 0) {
+ value_caps = malloc(size[j] * sizeof(HIDP_VALUE_CAPS));
+ if ( (value_caps != NULL)
+ && (HidP_GetValueCaps(j, value_caps, &size[j], preparsed_data) == HIDP_STATUS_SUCCESS)
+ && (size[j] >= 1) ) {
+ nb_ids[0] = 0;
+ nb_ids[1] = 0;
+ for (i=0; i<(int)size[j]; i++) {
+ usbi_dbg(" Report ID: 0x%02X", value_caps[i].ReportID);
+ if (value_caps[i].ReportID != 0) {
+ nb_ids[1]++;
+ } else {
+ nb_ids[0]++;
+ }
+ }
+ if (nb_ids[1] != 0) {
+ if (nb_ids[0] != 0) {
+ usbi_warn(ctx, "program assertion failed: zero and nonzero report IDs used for %s",
+ type[j]);
+ }
+ priv->hid->uses_report_ids[j] = true;
+ }
+ } else {
+ usbi_warn(ctx, " could not process %s report IDs", type[j]);
+ }
+ safe_free(value_caps);
+ }
+ }
+
+ // Set the report sizes
+ priv->hid->input_report_size = capabilities.InputReportByteLength;
+ priv->hid->output_report_size = capabilities.OutputReportByteLength;
+ priv->hid->feature_report_size = capabilities.FeatureReportByteLength;
+
+ // Fetch string descriptors
+ priv->hid->string_index[0] = priv->dev_descriptor.iManufacturer;
+ if (priv->hid->string_index[0] != 0) {
+ HidD_GetManufacturerString(hid_handle, priv->hid->string[0],
+ sizeof(priv->hid->string[0]));
+ } else {
+ priv->hid->string[0][0] = 0;
+ }
+ priv->hid->string_index[1] = priv->dev_descriptor.iProduct;
+ if (priv->hid->string_index[1] != 0) {
+ HidD_GetProductString(hid_handle, priv->hid->string[1],
+ sizeof(priv->hid->string[1]));
+ } else {
+ priv->hid->string[1][0] = 0;
+ }
+ priv->hid->string_index[2] = priv->dev_descriptor.iSerialNumber;
+ if (priv->hid->string_index[2] != 0) {
+ HidD_GetSerialNumberString(hid_handle, priv->hid->string[2],
+ sizeof(priv->hid->string[2]));
+ } else {
+ priv->hid->string[2][0] = 0;
+ }
+ } while(0);
+
+ if (preparsed_data) {
+ HidD_FreePreparsedData(preparsed_data);
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+static void hid_close(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ HANDLE file_handle;
+ int i;
+
+ if (!api_hid_available)
+ return;
+
+ for (i = 0; i < USB_MAXINTERFACES; i++) {
+ if (priv->usb_interface[i].apib->id == USB_API_HID) {
+ file_handle = handle_priv->interface_handle[i].api_handle;
+ if ( (file_handle != 0) && (file_handle != INVALID_HANDLE_VALUE)) {
+ CloseHandle(file_handle);
+ }
+ }
+ }
+}
+
+static int hid_claim_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ CHECK_HID_AVAILABLE;
+
+ // NB: Disconnection detection is not possible in this function
+ if (priv->usb_interface[iface].path == NULL) {
+ return LIBUSB_ERROR_NOT_FOUND; // invalid iface
+ }
+
+ // We use dev_handle as a flag for interface claimed
+ if (handle_priv->interface_handle[iface].dev_handle == INTERFACE_CLAIMED) {
+ return LIBUSB_ERROR_BUSY; // already claimed
+ }
+
+ handle_priv->interface_handle[iface].dev_handle = INTERFACE_CLAIMED;
+
+ usbi_dbg("claimed interface %d", iface);
+ handle_priv->active_interface = iface;
+
+ return LIBUSB_SUCCESS;
+}
+
+static int hid_release_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+
+ CHECK_HID_AVAILABLE;
+
+ if (priv->usb_interface[iface].path == NULL) {
+ return LIBUSB_ERROR_NOT_FOUND; // invalid iface
+ }
+
+ if (handle_priv->interface_handle[iface].dev_handle != INTERFACE_CLAIMED) {
+ return LIBUSB_ERROR_NOT_FOUND; // invalid iface
+ }
+
+ handle_priv->interface_handle[iface].dev_handle = INVALID_HANDLE_VALUE;
+
+ return LIBUSB_SUCCESS;
+}
+
+static int hid_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+
+ CHECK_HID_AVAILABLE;
+
+ if (altsetting > 255) {
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ if (altsetting != 0) {
+ usbi_err(ctx, "set interface altsetting not supported for altsetting >0");
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+static int hid_submit_control_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ WINUSB_SETUP_PACKET *setup = (WINUSB_SETUP_PACKET *) transfer->buffer;
+ HANDLE hid_handle;
+ struct winfd wfd;
+ int current_interface, config;
+ size_t size;
+ int r = LIBUSB_ERROR_INVALID_PARAM;
+
+ CHECK_HID_AVAILABLE;
+
+ transfer_priv->pollable_fd = INVALID_WINFD;
+ safe_free(transfer_priv->hid_buffer);
+ transfer_priv->hid_dest = NULL;
+ size = transfer->length - LIBUSB_CONTROL_SETUP_SIZE;
+
+ if (size > MAX_CTRL_BUFFER_LENGTH) {
+ return LIBUSB_ERROR_INVALID_PARAM;
+ }
+
+ current_interface = get_valid_interface(transfer->dev_handle, USB_API_HID);
+ if (current_interface < 0) {
+#if defined(AUTO_CLAIM)
+ if (auto_claim(transfer, &current_interface, USB_API_HID) != LIBUSB_SUCCESS) {
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+#else
+ usbi_warn(ctx, "no interface available for control transfer");
+ return LIBUSB_ERROR_NOT_FOUND;
+#endif
+ }
+
+ usbi_dbg("will use interface %d", current_interface);
+ hid_handle = handle_priv->interface_handle[current_interface].api_handle;
+ // Always use the handle returned from usbi_create_fd (wfd.handle)
+ wfd = usbi_create_fd(hid_handle, _O_RDONLY);
+ if (wfd.fd < 0) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ switch(LIBUSB_REQ_TYPE(setup->request_type)) {
+ case LIBUSB_REQUEST_TYPE_STANDARD:
+ switch(setup->request) {
+ case LIBUSB_REQUEST_GET_DESCRIPTOR:
+ r = _hid_get_descriptor(priv->hid, wfd.handle, LIBUSB_REQ_RECIPIENT(setup->request_type),
+ (setup->value >> 8) & 0xFF, setup->value & 0xFF, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, &size);
+ break;
+ case LIBUSB_REQUEST_GET_CONFIGURATION:
+ r = windows_get_configuration(transfer->dev_handle, &config);
+ if (r == LIBUSB_SUCCESS) {
+ size = 1;
+ ((uint8_t*)transfer->buffer)[LIBUSB_CONTROL_SETUP_SIZE] = (uint8_t)config;
+ r = LIBUSB_COMPLETED;
+ }
+ break;
+ case LIBUSB_REQUEST_SET_CONFIGURATION:
+ if (setup->value == priv->active_config) {
+ r = LIBUSB_COMPLETED;
+ } else {
+ usbi_warn(ctx, "cannot set configuration other than the default one");
+ r = LIBUSB_ERROR_INVALID_PARAM;
+ }
+ break;
+ case LIBUSB_REQUEST_GET_INTERFACE:
+ size = 1;
+ ((uint8_t*)transfer->buffer)[LIBUSB_CONTROL_SETUP_SIZE] = 0;
+ r = LIBUSB_COMPLETED;
+ break;
+ case LIBUSB_REQUEST_SET_INTERFACE:
+ r = hid_set_interface_altsetting(transfer->dev_handle, setup->index, setup->value);
+ if (r == LIBUSB_SUCCESS) {
+ r = LIBUSB_COMPLETED;
+ }
+ break;
+ default:
+ usbi_warn(ctx, "unsupported HID control request");
+ r = LIBUSB_ERROR_INVALID_PARAM;
+ break;
+ }
+ break;
+ case LIBUSB_REQUEST_TYPE_CLASS:
+ r =_hid_class_request(priv->hid, wfd.handle, setup->request_type, setup->request, setup->value,
+ setup->index, transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE, transfer_priv,
+ &size, wfd.overlapped);
+ break;
+ default:
+ usbi_warn(ctx, "unsupported HID control request");
+ r = LIBUSB_ERROR_INVALID_PARAM;
+ break;
+ }
+
+ if (r == LIBUSB_COMPLETED) {
+ // Force request to be completed synchronously. Transferred size has been set by previous call
+ wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY;
+ // http://msdn.microsoft.com/en-us/library/ms684342%28VS.85%29.aspx
+ // set InternalHigh to the number of bytes transferred
+ wfd.overlapped->InternalHigh = (DWORD)size;
+ r = LIBUSB_SUCCESS;
+ }
+
+ if (r == LIBUSB_SUCCESS) {
+ // Use priv_transfer to store data needed for async polling
+ transfer_priv->pollable_fd = wfd;
+ transfer_priv->interface_number = (uint8_t)current_interface;
+ } else {
+ usbi_free_fd(wfd.fd);
+ }
+
+ return r;
+}
+
+static int hid_submit_bulk_transfer(struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ struct winfd wfd;
+ HANDLE hid_handle;
+ bool direction_in, ret;
+ int current_interface, length;
+ DWORD size;
+ int r = LIBUSB_SUCCESS;
+
+ CHECK_HID_AVAILABLE;
+
+ transfer_priv->pollable_fd = INVALID_WINFD;
+ transfer_priv->hid_dest = NULL;
+ safe_free(transfer_priv->hid_buffer);
+
+ current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ usbi_dbg("matched endpoint %02X with interface %d", transfer->endpoint, current_interface);
+
+ hid_handle = handle_priv->interface_handle[current_interface].api_handle;
+ direction_in = transfer->endpoint & LIBUSB_ENDPOINT_IN;
+
+ wfd = usbi_create_fd(hid_handle, direction_in?_O_RDONLY:_O_WRONLY);
+ // Always use the handle returned from usbi_create_fd (wfd.handle)
+ if (wfd.fd < 0) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+
+ // If report IDs are not in use, an extra prefix byte must be added
+ if ( ((direction_in) && (!priv->hid->uses_report_ids[0]))
+ || ((!direction_in) && (!priv->hid->uses_report_ids[1])) ) {
+ length = transfer->length+1;
+ } else {
+ length = transfer->length;
+ }
+ // Add a trailing byte to detect overflows on input
+ transfer_priv->hid_buffer = (uint8_t*)calloc(length+1, 1);
+ if (transfer_priv->hid_buffer == NULL) {
+ return LIBUSB_ERROR_NO_MEM;
+ }
+ transfer_priv->hid_expected_size = length;
+
+ if (direction_in) {
+ transfer_priv->hid_dest = transfer->buffer;
+ usbi_dbg("reading %d bytes (report ID: 0x%02X)", length, transfer_priv->hid_buffer[0]);
+ ret = ReadFile(wfd.handle, transfer_priv->hid_buffer, length+1, &size, wfd.overlapped);
+ } else {
+ if (!priv->hid->uses_report_ids[1]) {
+ memcpy(transfer_priv->hid_buffer+1, transfer->buffer, transfer->length);
+ } else {
+ // We could actually do without the calloc and memcpy in this case
+ memcpy(transfer_priv->hid_buffer, transfer->buffer, transfer->length);
+ }
+ usbi_dbg("writing %d bytes (report ID: 0x%02X)", length, transfer_priv->hid_buffer[0]);
+ ret = WriteFile(wfd.handle, transfer_priv->hid_buffer, length, &size, wfd.overlapped);
+ }
+ if (!ret) {
+ if (GetLastError() != ERROR_IO_PENDING) {
+ usbi_err(ctx, "HID transfer failed: %s", windows_error_str(0));
+ usbi_free_fd(wfd.fd);
+ safe_free(transfer_priv->hid_buffer);
+ return LIBUSB_ERROR_IO;
+ }
+ } else {
+ // Only write operations that completed synchronously need to free up
+ // hid_buffer. For reads, copy_transfer_data() handles that process.
+ if (!direction_in) {
+ safe_free(transfer_priv->hid_buffer);
+ }
+ if (size == 0) {
+ usbi_err(ctx, "program assertion failed - no data was transferred");
+ size = 1;
+ }
+ if (size > (size_t)length) {
+ usbi_err(ctx, "OVERFLOW!");
+ r = LIBUSB_ERROR_OVERFLOW;
+ }
+ wfd.overlapped->Internal = STATUS_COMPLETED_SYNCHRONOUSLY;
+ wfd.overlapped->InternalHigh = size;
+ }
+
+ transfer_priv->pollable_fd = wfd;
+ transfer_priv->interface_number = (uint8_t)current_interface;
+
+ return r;
+}
+
+static int hid_abort_transfers(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ HANDLE hid_handle;
+ int current_interface;
+
+ CHECK_HID_AVAILABLE;
+
+ current_interface = transfer_priv->interface_number;
+ hid_handle = handle_priv->interface_handle[current_interface].api_handle;
+ CancelIo(hid_handle);
+
+ return LIBUSB_SUCCESS;
+}
+
+static int hid_reset_device(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ HANDLE hid_handle;
+ int current_interface;
+
+ CHECK_HID_AVAILABLE;
+
+ // Flushing the queues on all interfaces is the best we can achieve
+ for (current_interface = 0; current_interface < USB_MAXINTERFACES; current_interface++) {
+ hid_handle = handle_priv->interface_handle[current_interface].api_handle;
+ if ((hid_handle != 0) && (hid_handle != INVALID_HANDLE_VALUE)) {
+ HidD_FlushQueue(hid_handle);
+ }
+ }
+ return LIBUSB_SUCCESS;
+}
+
+static int hid_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ HANDLE hid_handle;
+ int current_interface;
+
+ CHECK_HID_AVAILABLE;
+
+ current_interface = interface_by_endpoint(priv, handle_priv, endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cannot clear");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ usbi_dbg("matched endpoint %02X with interface %d", endpoint, current_interface);
+ hid_handle = handle_priv->interface_handle[current_interface].api_handle;
+
+ // No endpoint selection with Microsoft's implementation, so we try to flush the
+ // whole interface. Should be OK for most case scenarios
+ if (!HidD_FlushQueue(hid_handle)) {
+ usbi_err(ctx, "Flushing of HID queue failed: %s", windows_error_str(0));
+ // Device was probably disconnected
+ return LIBUSB_ERROR_NO_DEVICE;
+ }
+
+ return LIBUSB_SUCCESS;
+}
+
+// This extra function is only needed for HID
+static int hid_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ int r = LIBUSB_TRANSFER_COMPLETED;
+ uint32_t corrected_size = io_size;
+
+ if (transfer_priv->hid_buffer != NULL) {
+ // If we have a valid hid_buffer, it means the transfer was async
+ if (transfer_priv->hid_dest != NULL) { // Data readout
+ // First, check for overflow
+ if (corrected_size > transfer_priv->hid_expected_size) {
+ usbi_err(ctx, "OVERFLOW!");
+ corrected_size = (uint32_t)transfer_priv->hid_expected_size;
+ r = LIBUSB_TRANSFER_OVERFLOW;
+ }
+
+ if (transfer_priv->hid_buffer[0] == 0) {
+ // Discard the 1 byte report ID prefix
+ corrected_size--;
+ memcpy(transfer_priv->hid_dest, transfer_priv->hid_buffer+1, corrected_size);
+ } else {
+ memcpy(transfer_priv->hid_dest, transfer_priv->hid_buffer, corrected_size);
+ }
+ transfer_priv->hid_dest = NULL;
+ }
+ // For write, we just need to free the hid buffer
+ safe_free(transfer_priv->hid_buffer);
+ }
+ itransfer->transferred += corrected_size;
+ return r;
+}
+
+
+/*
+ * Composite API functions
+ */
+static int composite_init(struct libusb_context *ctx)
+{
+ return LIBUSB_SUCCESS;
+}
+
+static int composite_exit(void)
+{
+ return LIBUSB_SUCCESS;
+}
+
+static int composite_open(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ unsigned api;
+ int r;
+ uint8_t flag = 1<<USB_API_WINUSB;
+
+ for (api=USB_API_WINUSB; api<USB_API_MAX; api++) {
+ if (priv->composite_api_flags & flag) {
+ r = usb_api_backend[api].open(dev_handle);
+ if (r != LIBUSB_SUCCESS) {
+ return r;
+ }
+ }
+ flag <<= 1;
+ }
+ return LIBUSB_SUCCESS;
+}
+
+static void composite_close(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ unsigned api;
+ uint8_t flag = 1<<USB_API_WINUSB;
+
+ for (api=USB_API_WINUSB; api<USB_API_MAX; api++) {
+ if (priv->composite_api_flags & flag) {
+ usb_api_backend[api].close(dev_handle);
+ }
+ flag <<= 1;
+ }
+}
+
+static int composite_claim_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ return priv->usb_interface[iface].apib->claim_interface(dev_handle, iface);
+}
+
+static int composite_set_interface_altsetting(struct libusb_device_handle *dev_handle, int iface, int altsetting)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ return priv->usb_interface[iface].apib->set_interface_altsetting(dev_handle, iface, altsetting);
+}
+
+static int composite_release_interface(struct libusb_device_handle *dev_handle, int iface)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ return priv->usb_interface[iface].apib->release_interface(dev_handle, iface);
+}
+
+static int composite_submit_control_transfer(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int i, pass;
+
+ // Interface shouldn't matter for control, but it does in practice, with Windows'
+ // restrictions with regards to accessing HID keyboards and mice. Try a 2 pass approach
+ for (pass = 0; pass < 2; pass++) {
+ for (i=0; i<USB_MAXINTERFACES; i++) {
+ if (priv->usb_interface[i].path != NULL) {
+ if ((pass == 0) && (priv->usb_interface[i].restricted_functionality)) {
+ usbi_dbg("trying to skip restricted interface #%d (HID keyboard or mouse?)", i);
+ continue;
+ }
+ usbi_dbg("using interface %d", i);
+ return priv->usb_interface[i].apib->submit_control_transfer(itransfer);
+ }
+ }
+ }
+
+ usbi_err(ctx, "no libusb supported interfaces to complete request");
+ return LIBUSB_ERROR_NOT_FOUND;
+}
+
+static int composite_submit_bulk_transfer(struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int current_interface;
+
+ current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ return priv->usb_interface[current_interface].apib->submit_bulk_transfer(itransfer);
+}
+
+static int composite_submit_iso_transfer(struct usbi_transfer *itransfer) {
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct libusb_context *ctx = DEVICE_CTX(transfer->dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(transfer->dev_handle);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+ int current_interface;
+
+ current_interface = interface_by_endpoint(priv, handle_priv, transfer->endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cancelling transfer");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ return priv->usb_interface[current_interface].apib->submit_iso_transfer(itransfer);
+}
+
+static int composite_clear_halt(struct libusb_device_handle *dev_handle, unsigned char endpoint)
+{
+ struct libusb_context *ctx = DEVICE_CTX(dev_handle->dev);
+ struct windows_device_handle_priv *handle_priv = __device_handle_priv(dev_handle);
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ int current_interface;
+
+ current_interface = interface_by_endpoint(priv, handle_priv, endpoint);
+ if (current_interface < 0) {
+ usbi_err(ctx, "unable to match endpoint to an open interface - cannot clear");
+ return LIBUSB_ERROR_NOT_FOUND;
+ }
+
+ return priv->usb_interface[current_interface].apib->clear_halt(dev_handle, endpoint);
+}
+
+static int composite_abort_control(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+
+ return priv->usb_interface[transfer_priv->interface_number].apib->abort_control(itransfer);
+}
+
+static int composite_abort_transfers(struct usbi_transfer *itransfer)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+
+ return priv->usb_interface[transfer_priv->interface_number].apib->abort_transfers(itransfer);
+}
+
+static int composite_reset_device(struct libusb_device_handle *dev_handle)
+{
+ struct windows_device_priv *priv = __device_priv(dev_handle->dev);
+ unsigned api;
+ int r;
+ uint8_t flag = 1<<USB_API_WINUSB;
+
+ for (api=USB_API_WINUSB; api<USB_API_MAX; api++) {
+ if (priv->composite_api_flags & flag) {
+ r = usb_api_backend[api].reset_device(dev_handle);
+ if (r != LIBUSB_SUCCESS) {
+ return r;
+ }
+ }
+ flag <<= 1;
+ }
+ return LIBUSB_SUCCESS;
+}
+
+static int composite_copy_transfer_data(struct usbi_transfer *itransfer, uint32_t io_size)
+{
+ struct libusb_transfer *transfer = __USBI_TRANSFER_TO_LIBUSB_TRANSFER(itransfer);
+ struct windows_transfer_priv *transfer_priv = usbi_transfer_get_os_priv(itransfer);
+ struct windows_device_priv *priv = __device_priv(transfer->dev_handle->dev);
+
+ return priv->usb_interface[transfer_priv->interface_number].apib->copy_transfer_data(itransfer, io_size);
+}
diff --git a/libusb-1.0/libusb/os/windows_usb.h b/libusb-1.0/libusb/os/windows_usb.h
new file mode 100644
index 0000000..8851f41
--- /dev/null
+++ b/libusb-1.0/libusb/os/windows_usb.h
@@ -0,0 +1,784 @@
+/*
+ * Windows backend for libusb 1.0
+ * Copyright (C) 2009-2010 Pete Batard <pbatard@gmail.com>
+ * With contributions from Michael Plante, Orin Eman et al.
+ * Parts of this code adapted from libusb-win32-v1 by Stephan Meyer
+ * Major code testing contribution by Xiaofan Chen
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#pragma once
+
+#if defined(_MSC_VER)
+// disable /W4 MSVC warnings that are benign
+#pragma warning(disable:4127) // conditional expression is constant
+#pragma warning(disable:4100) // unreferenced formal parameter
+#pragma warning(disable:4214) // bit field types other than int
+#pragma warning(disable:4201) // nameless struct/union
+#endif
+
+// Windows API default is uppercase - ugh!
+#if !defined(bool)
+#define bool BOOL
+#endif
+#if !defined(true)
+#define true TRUE
+#endif
+#if !defined(false)
+#define false FALSE
+#endif
+
+// Missing from MSVC6 setupapi.h
+#if !defined(SPDRP_ADDRESS)
+#define SPDRP_ADDRESS 28
+#endif
+#if !defined(SPDRP_INSTALL_STATE)
+#define SPDRP_INSTALL_STATE 34
+#endif
+
+#if defined(__CYGWIN__ )
+// cygwin produces a warning unless these prototypes are defined
+extern int _snprintf(char *buffer, size_t count, const char *format, ...);
+extern char *_strdup(const char *strSource);
+// _beginthreadex is MSVCRT => unavailable for cygwin. Fallback to using CreateThread
+#define _beginthreadex(a, b, c, d, e, f) CreateThread(a, b, (LPTHREAD_START_ROUTINE)c, d, e, f)
+#endif
+#define safe_free(p) do {if (p != NULL) {free((void*)p); p = NULL;}} while(0)
+#define safe_closehandle(h) do {if (h != INVALID_HANDLE_VALUE) {CloseHandle(h); h = INVALID_HANDLE_VALUE;}} while(0)
+#define safe_min(a, b) min((size_t)(a), (size_t)(b))
+#define safe_strcp(dst, dst_max, src, count) do {memcpy(dst, src, safe_min(count, dst_max)); \
+ ((char*)dst)[safe_min(count, dst_max)-1] = 0;} while(0)
+#define safe_strcpy(dst, dst_max, src) safe_strcp(dst, dst_max, src, safe_strlen(src)+1)
+#define safe_strncat(dst, dst_max, src, count) strncat(dst, src, safe_min(count, dst_max - safe_strlen(dst) - 1))
+#define safe_strcat(dst, dst_max, src) safe_strncat(dst, dst_max, src, safe_strlen(src)+1)
+#define safe_strcmp(str1, str2) strcmp(((str1==NULL)?"<NULL>":str1), ((str2==NULL)?"<NULL>":str2))
+#define safe_strncmp(str1, str2, count) strncmp(((str1==NULL)?"<NULL>":str1), ((str2==NULL)?"<NULL>":str2), count)
+#define safe_strlen(str) ((str==NULL)?0:strlen(str))
+#define safe_sprintf _snprintf
+#define safe_unref_device(dev) do {if (dev != NULL) {libusb_unref_device(dev); dev = NULL;}} while(0)
+#define wchar_to_utf8_ms(wstr, str, strlen) WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, strlen, NULL, NULL)
+inline void upperize(char* str) {
+ size_t i;
+ if (str == NULL) return;
+ for (i=0; i<safe_strlen(str); i++)
+ str[i] = (char)toupper((int)str[i]);
+}
+
+#define MAX_CTRL_BUFFER_LENGTH 4096
+#define MAX_USB_DEVICES 256
+#define MAX_USB_STRING_LENGTH 128
+#define MAX_HID_REPORT_SIZE 1024
+#define MAX_HID_DESCRIPTOR_SIZE 256
+#define MAX_GUID_STRING_LENGTH 40
+#define MAX_PATH_LENGTH 128
+#define MAX_KEY_LENGTH 256
+#define MAX_TIMER_SEMAPHORES 128
+#define TIMER_REQUEST_RETRY_MS 100
+#define ERR_BUFFER_SIZE 256
+#define LIST_SEPARATOR ';'
+#define HTAB_SIZE 1021
+
+// Handle code for HID interface that have been claimed ("dibs")
+#define INTERFACE_CLAIMED ((HANDLE)(intptr_t)0xD1B5)
+// Additional return code for HID operations that completed synchronously
+#define LIBUSB_COMPLETED (LIBUSB_SUCCESS + 1)
+
+// http://msdn.microsoft.com/en-us/library/ff545978.aspx
+// http://msdn.microsoft.com/en-us/library/ff545972.aspx
+// http://msdn.microsoft.com/en-us/library/ff545982.aspx
+#if !defined(GUID_DEVINTERFACE_USB_HOST_CONTROLLER)
+const GUID GUID_DEVINTERFACE_USB_HOST_CONTROLLER = { 0x3ABF6F2D, 0x71C4, 0x462A, {0x8A, 0x92, 0x1E, 0x68, 0x61, 0xE6, 0xAF, 0x27} };
+#endif
+#if !defined(GUID_DEVINTERFACE_USB_DEVICE)
+const GUID GUID_DEVINTERFACE_USB_DEVICE = { 0xA5DCBF10, 0x6530, 0x11D2, {0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED} };
+#endif
+#if !defined(GUID_DEVINTERFACE_USB_HUB)
+const GUID GUID_DEVINTERFACE_USB_HUB = { 0xF18A0E88, 0xC30C, 0x11D0, {0x88, 0x15, 0x00, 0xA0, 0xC9, 0x06, 0xBE, 0xD8} };
+#endif
+const GUID GUID_NULL = { 0x00000000, 0x0000, 0x0000, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} };
+
+
+/*
+ * Multiple USB API backend support
+ */
+#define USB_API_UNSUPPORTED 0
+#define USB_API_HUB 1
+#define USB_API_COMPOSITE 2
+#define USB_API_WINUSB 3
+#define USB_API_HID 4
+#define USB_API_MAX 5
+
+#define CLASS_GUID_UNSUPPORTED GUID_NULL
+const GUID CLASS_GUID_HID = { 0x745A17A0, 0x74D3, 0x11D0, {0xB6, 0xFE, 0x00, 0xA0, 0xC9, 0x0F, 0x57, 0xDA} };
+const GUID CLASS_GUID_LIBUSB_WINUSB = { 0x78A1C341, 0x4539, 0x11D3, {0xB8, 0x8D, 0x00, 0xC0, 0x4F, 0xAD, 0x51, 0x71} };
+const GUID CLASS_GUID_COMPOSITE = { 0x36FC9E60, 0xC465, 0x11cF, {0x80, 0x56, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00} };
+
+struct windows_usb_api_backend {
+ const uint8_t id;
+ const char* designation;
+ const GUID *class_guid; // The Class GUID (for fallback in case the driver name cannot be read)
+ const char **driver_name_list; // Driver name, without .sys, e.g. "usbccgp"
+ const uint8_t nb_driver_names;
+ int (*init)(struct libusb_context *ctx);
+ int (*exit)(void);
+ int (*open)(struct libusb_device_handle *dev_handle);
+ void (*close)(struct libusb_device_handle *dev_handle);
+ int (*claim_interface)(struct libusb_device_handle *dev_handle, int iface);
+ int (*set_interface_altsetting)(struct libusb_device_handle *dev_handle, int iface, int altsetting);
+ int (*release_interface)(struct libusb_device_handle *dev_handle, int iface);
+ int (*clear_halt)(struct libusb_device_handle *dev_handle, unsigned char endpoint);
+ int (*reset_device)(struct libusb_device_handle *dev_handle);
+ int (*submit_bulk_transfer)(struct usbi_transfer *itransfer);
+ int (*submit_iso_transfer)(struct usbi_transfer *itransfer);
+ int (*submit_control_transfer)(struct usbi_transfer *itransfer);
+ int (*abort_control)(struct usbi_transfer *itransfer);
+ int (*abort_transfers)(struct usbi_transfer *itransfer);
+ int (*copy_transfer_data)(struct usbi_transfer *itransfer, uint32_t io_size);
+};
+
+extern const struct windows_usb_api_backend usb_api_backend[USB_API_MAX];
+
+#define PRINT_UNSUPPORTED_API(fname) \
+ usbi_dbg("unsupported API call for '" \
+ #fname "' (unrecognized device driver)"); \
+ return LIBUSB_ERROR_NOT_SUPPORTED;
+
+/*
+ * private structures definition
+ * with inline pseudo constructors/destructors
+ */
+
+// TODO (v2+): move hid desc to libusb.h?
+struct libusb_hid_descriptor {
+ uint8_t bLength;
+ uint8_t bDescriptorType;
+ uint16_t bcdHID;
+ uint8_t bCountryCode;
+ uint8_t bNumDescriptors;
+ uint8_t bClassDescriptorType;
+ uint16_t wClassDescriptorLength;
+};
+#define LIBUSB_DT_HID_SIZE 9
+#define HID_MAX_CONFIG_DESC_SIZE (LIBUSB_DT_CONFIG_SIZE + LIBUSB_DT_INTERFACE_SIZE \
+ + LIBUSB_DT_HID_SIZE + 2 * LIBUSB_DT_ENDPOINT_SIZE)
+#define HID_MAX_REPORT_SIZE 1024
+#define HID_IN_EP 0x81
+#define HID_OUT_EP 0x02
+#define LIBUSB_REQ_RECIPIENT(request_type) ((request_type) & 0x1F)
+#define LIBUSB_REQ_TYPE(request_type) ((request_type) & (0x03 << 5))
+#define LIBUSB_REQ_IN(request_type) ((request_type) & LIBUSB_ENDPOINT_IN)
+#define LIBUSB_REQ_OUT(request_type) (!LIBUSB_REQ_IN(request_type))
+
+// The following are used for HID reports IOCTLs
+#define HID_CTL_CODE(id) \
+ CTL_CODE (FILE_DEVICE_KEYBOARD, (id), METHOD_NEITHER, FILE_ANY_ACCESS)
+#define HID_BUFFER_CTL_CODE(id) \
+ CTL_CODE (FILE_DEVICE_KEYBOARD, (id), METHOD_BUFFERED, FILE_ANY_ACCESS)
+#define HID_IN_CTL_CODE(id) \
+ CTL_CODE (FILE_DEVICE_KEYBOARD, (id), METHOD_IN_DIRECT, FILE_ANY_ACCESS)
+#define HID_OUT_CTL_CODE(id) \
+ CTL_CODE (FILE_DEVICE_KEYBOARD, (id), METHOD_OUT_DIRECT, FILE_ANY_ACCESS)
+
+#define IOCTL_HID_GET_FEATURE HID_OUT_CTL_CODE(100)
+#define IOCTL_HID_GET_INPUT_REPORT HID_OUT_CTL_CODE(104)
+#define IOCTL_HID_SET_FEATURE HID_IN_CTL_CODE(100)
+#define IOCTL_HID_SET_OUTPUT_REPORT HID_IN_CTL_CODE(101)
+
+enum libusb_hid_request_type {
+ HID_REQ_GET_REPORT = 0x01,
+ HID_REQ_GET_IDLE = 0x02,
+ HID_REQ_GET_PROTOCOL = 0x03,
+ HID_REQ_SET_REPORT = 0x09,
+ HID_REQ_SET_IDLE = 0x0A,
+ HID_REQ_SET_PROTOCOL = 0x0B
+};
+
+enum libusb_hid_report_type {
+ HID_REPORT_TYPE_INPUT = 0x01,
+ HID_REPORT_TYPE_OUTPUT = 0x02,
+ HID_REPORT_TYPE_FEATURE = 0x03
+};
+
+struct hid_device_priv {
+ uint16_t vid;
+ uint16_t pid;
+ uint8_t config;
+ uint8_t nb_interfaces;
+ bool uses_report_ids[3]; // input, ouptput, feature
+ uint16_t input_report_size;
+ uint16_t output_report_size;
+ uint16_t feature_report_size;
+ WCHAR string[3][MAX_USB_STRING_LENGTH];
+ uint8_t string_index[3]; // man, prod, ser
+};
+
+typedef struct libusb_device_descriptor USB_DEVICE_DESCRIPTOR, *PUSB_DEVICE_DESCRIPTOR;
+struct windows_device_priv {
+ uint8_t depth; // distance to HCD
+ uint8_t port; // port number on the hub
+ struct libusb_device *parent_dev; // access to parent is required for usermode ops
+ char *path; // device interface path
+ struct windows_usb_api_backend const *apib;
+ struct {
+ char *path; // each interface needs a device interface path,
+ struct windows_usb_api_backend const *apib; // an API backend (multiple drivers support),
+ int8_t nb_endpoints; // and a set of endpoint addresses (USB_MAXENDPOINTS)
+ uint8_t *endpoint;
+ bool restricted_functionality; // indicates if the interface functionality is restricted
+ // by Windows (eg. HID keyboards or mice cannot do R/W)
+ } usb_interface[USB_MAXINTERFACES];
+ uint8_t composite_api_flags; // HID and composite devices require additional data
+ struct hid_device_priv *hid;
+ uint8_t active_config;
+ USB_DEVICE_DESCRIPTOR dev_descriptor;
+ unsigned char **config_descriptor; // list of pointers to the cached config descriptors
+};
+
+static inline struct windows_device_priv *__device_priv(struct libusb_device *dev) {
+ return (struct windows_device_priv *)dev->os_priv;
+}
+
+static inline void windows_device_priv_init(libusb_device* dev) {
+ struct windows_device_priv* p = __device_priv(dev);
+ int i;
+ p->depth = 0;
+ p->port = 0;
+ p->parent_dev = NULL;
+ p->path = NULL;
+ p->apib = &usb_api_backend[USB_API_UNSUPPORTED];
+ p->composite_api_flags = 0;
+ p->hid = NULL;
+ p->active_config = 0;
+ p->config_descriptor = NULL;
+ memset(&(p->dev_descriptor), 0, sizeof(USB_DEVICE_DESCRIPTOR));
+ for (i=0; i<USB_MAXINTERFACES; i++) {
+ p->usb_interface[i].path = NULL;
+ p->usb_interface[i].apib = &usb_api_backend[USB_API_UNSUPPORTED];
+ p->usb_interface[i].nb_endpoints = 0;
+ p->usb_interface[i].endpoint = NULL;
+ p->usb_interface[i].restricted_functionality = false;
+ }
+}
+
+static inline void windows_device_priv_release(libusb_device* dev) {
+ struct windows_device_priv* p = __device_priv(dev);
+ int i;
+ safe_free(p->path);
+ if ((dev->num_configurations > 0) && (p->config_descriptor != NULL)) {
+ for (i=0; i < dev->num_configurations; i++)
+ safe_free(p->config_descriptor[i]);
+ }
+ safe_free(p->config_descriptor);
+ safe_free(p->hid);
+ for (i=0; i<USB_MAXINTERFACES; i++) {
+ safe_free(p->usb_interface[i].path);
+ safe_free(p->usb_interface[i].endpoint);
+ }
+}
+
+struct interface_handle_t {
+ HANDLE dev_handle; // WinUSB needs an extra handle for the file
+ HANDLE api_handle; // used by the API to communicate with the device
+};
+
+struct windows_device_handle_priv {
+ int active_interface;
+ struct interface_handle_t interface_handle[USB_MAXINTERFACES];
+#if defined(AUTO_CLAIM)
+ int autoclaim_count[USB_MAXINTERFACES]; // For auto-release
+#endif
+};
+
+static inline struct windows_device_handle_priv *__device_handle_priv(
+ struct libusb_device_handle *handle)
+{
+ return (struct windows_device_handle_priv *) handle->os_priv;
+}
+
+// used for async polling functions
+struct windows_transfer_priv {
+ struct winfd pollable_fd;
+ uint8_t interface_number;
+ uint8_t *hid_buffer; // 1 byte extended data buffer, required for HID
+ uint8_t *hid_dest; // transfer buffer destination, required for HID
+ size_t hid_expected_size;
+};
+
+// used to match a device driver (including filter drivers) against a supported API
+struct driver_lookup {
+ char list[MAX_KEY_LENGTH+1];// REG_MULTI_SZ list of services (driver) names
+ const DWORD reg_prop; // SPDRP registry key to use to retreive list
+ const char* designation; // internal designation (for debug output)
+};
+
+/*
+ * API macros - from libusb-win32 1.x
+ */
+#define DLL_DECLARE_PREFIXED(api, ret, prefix, name, args) \
+ typedef ret (api * __dll_##name##_t)args; \
+ static __dll_##name##_t prefix##name = NULL
+
+#define DLL_LOAD_PREFIXED(dll, prefix, name, ret_on_failure) \
+ do { \
+ HMODULE h = GetModuleHandleA(#dll); \
+ if (!h) \
+ h = LoadLibraryA(#dll); \
+ if (!h) { \
+ if (ret_on_failure) { return LIBUSB_ERROR_NOT_FOUND; }\
+ else { break; } \
+ } \
+ prefix##name = (__dll_##name##_t)GetProcAddress(h, #name);\
+ if (prefix##name) break; \
+ prefix##name = (__dll_##name##_t)GetProcAddress(h, #name "A");\
+ if (prefix##name) break; \
+ prefix##name = (__dll_##name##_t)GetProcAddress(h, #name "W");\
+ if (prefix##name) break; \
+ if(ret_on_failure) \
+ return LIBUSB_ERROR_NOT_FOUND; \
+ } while(0)
+
+#define DLL_DECLARE(api, ret, name, args) DLL_DECLARE_PREFIXED(api, ret, , name, args)
+#define DLL_LOAD(dll, name, ret_on_failure) DLL_LOAD_PREFIXED(dll, , name, ret_on_failure)
+
+/* OLE32 dependency */
+DLL_DECLARE_PREFIXED(WINAPI, HRESULT, p, CLSIDFromString, (LPCOLESTR, LPCLSID));
+
+/* SetupAPI dependencies */
+DLL_DECLARE_PREFIXED(WINAPI, HDEVINFO, p, SetupDiGetClassDevsA, (const GUID*, PCSTR, HWND, DWORD));
+DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiEnumDeviceInfo, (HDEVINFO, DWORD, PSP_DEVINFO_DATA));
+DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiEnumDeviceInterfaces, (HDEVINFO, PSP_DEVINFO_DATA,
+ const GUID*, DWORD, PSP_DEVICE_INTERFACE_DATA));
+DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiGetDeviceInterfaceDetailA, (HDEVINFO, PSP_DEVICE_INTERFACE_DATA,
+ PSP_DEVICE_INTERFACE_DETAIL_DATA_A, DWORD, PDWORD, PSP_DEVINFO_DATA));
+DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiDestroyDeviceInfoList, (HDEVINFO));
+DLL_DECLARE_PREFIXED(WINAPI, HKEY, p, SetupDiOpenDevRegKey, (HDEVINFO, PSP_DEVINFO_DATA, DWORD, DWORD, DWORD, REGSAM));
+DLL_DECLARE_PREFIXED(WINAPI, BOOL, p, SetupDiGetDeviceRegistryPropertyA, (HDEVINFO,
+ PSP_DEVINFO_DATA, DWORD, PDWORD, PBYTE, DWORD, PDWORD));
+DLL_DECLARE_PREFIXED(WINAPI, LONG, p, RegQueryValueExW, (HKEY, LPCWSTR, LPDWORD, LPDWORD, LPBYTE, LPDWORD));
+DLL_DECLARE_PREFIXED(WINAPI, LONG, p, RegCloseKey, (HKEY));
+
+/*
+ * Windows DDK API definitions. Most of it copied from MinGW's includes
+ */
+typedef DWORD DEVNODE, DEVINST;
+typedef DEVNODE *PDEVNODE, *PDEVINST;
+typedef DWORD RETURN_TYPE;
+typedef RETURN_TYPE CONFIGRET;
+
+#define CR_SUCCESS 0x00000000
+#define CR_NO_SUCH_DEVNODE 0x0000000D
+
+#define USB_DEVICE_DESCRIPTOR_TYPE LIBUSB_DT_DEVICE
+#define USB_CONFIGURATION_DESCRIPTOR_TYPE LIBUSB_DT_CONFIG
+#define USB_STRING_DESCRIPTOR_TYPE LIBUSB_DT_STRING
+#define USB_INTERFACE_DESCRIPTOR_TYPE LIBUSB_DT_INTERFACE
+#define USB_ENDPOINT_DESCRIPTOR_TYPE LIBUSB_DT_ENDPOINT
+
+#define USB_REQUEST_GET_STATUS LIBUSB_REQUEST_GET_STATUS
+#define USB_REQUEST_CLEAR_FEATURE LIBUSB_REQUEST_CLEAR_FEATURE
+#define USB_REQUEST_SET_FEATURE LIBUSB_REQUEST_SET_FEATURE
+#define USB_REQUEST_SET_ADDRESS LIBUSB_REQUEST_SET_ADDRESS
+#define USB_REQUEST_GET_DESCRIPTOR LIBUSB_REQUEST_GET_DESCRIPTOR
+#define USB_REQUEST_SET_DESCRIPTOR LIBUSB_REQUEST_SET_DESCRIPTOR
+#define USB_REQUEST_GET_CONFIGURATION LIBUSB_REQUEST_GET_CONFIGURATION
+#define USB_REQUEST_SET_CONFIGURATION LIBUSB_REQUEST_SET_CONFIGURATION
+#define USB_REQUEST_GET_INTERFACE LIBUSB_REQUEST_GET_INTERFACE
+#define USB_REQUEST_SET_INTERFACE LIBUSB_REQUEST_SET_INTERFACE
+#define USB_REQUEST_SYNC_FRAME LIBUSB_REQUEST_SYNCH_FRAME
+
+#define USB_GET_NODE_INFORMATION 258
+#define USB_GET_NODE_CONNECTION_INFORMATION 259
+#define USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION 260
+#define USB_GET_NODE_CONNECTION_NAME 261
+#define USB_GET_HUB_CAPABILITIES 271
+#if !defined(USB_GET_HUB_CAPABILITIES_EX)
+#define USB_GET_HUB_CAPABILITIES_EX 276
+#endif
+
+#ifndef METHOD_BUFFERED
+#define METHOD_BUFFERED 0
+#endif
+#ifndef FILE_ANY_ACCESS
+#define FILE_ANY_ACCESS 0x00000000
+#endif
+#ifndef FILE_DEVICE_UNKNOWN
+#define FILE_DEVICE_UNKNOWN 0x00000022
+#endif
+#ifndef FILE_DEVICE_USB
+#define FILE_DEVICE_USB FILE_DEVICE_UNKNOWN
+#endif
+
+#ifndef CTL_CODE
+#define CTL_CODE(DeviceType, Function, Method, Access)( \
+ ((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method))
+#endif
+
+typedef enum _USB_CONNECTION_STATUS {
+ NoDeviceConnected,
+ DeviceConnected,
+ DeviceFailedEnumeration,
+ DeviceGeneralFailure,
+ DeviceCausedOvercurrent,
+ DeviceNotEnoughPower,
+ DeviceNotEnoughBandwidth,
+ DeviceHubNestedTooDeeply,
+ DeviceInLegacyHub
+} USB_CONNECTION_STATUS, *PUSB_CONNECTION_STATUS;
+
+typedef enum _USB_HUB_NODE {
+ UsbHub,
+ UsbMIParent
+} USB_HUB_NODE;
+
+/* Cfgmgr32.dll interface */
+DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Parent, (PDEVINST, DEVINST, ULONG));
+DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Child, (PDEVINST, DEVINST, ULONG));
+DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Sibling, (PDEVINST, DEVINST, ULONG));
+DLL_DECLARE(WINAPI, CONFIGRET, CM_Get_Device_IDA, (DEVINST, PCHAR, ULONG, ULONG));
+
+#define IOCTL_USB_GET_HUB_CAPABILITIES_EX \
+ CTL_CODE( FILE_DEVICE_USB, USB_GET_HUB_CAPABILITIES_EX, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_HUB_CAPABILITIES \
+ CTL_CODE(FILE_DEVICE_USB, USB_GET_HUB_CAPABILITIES, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION \
+ CTL_CODE(FILE_DEVICE_USB, USB_GET_DESCRIPTOR_FROM_NODE_CONNECTION, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_ROOT_HUB_NAME \
+ CTL_CODE(FILE_DEVICE_USB, HCD_GET_ROOT_HUB_NAME, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_NODE_INFORMATION \
+ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_INFORMATION, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_NODE_CONNECTION_INFORMATION \
+ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_INFORMATION, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_NODE_CONNECTION_ATTRIBUTES \
+ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_ATTRIBUTES, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+#define IOCTL_USB_GET_NODE_CONNECTION_NAME \
+ CTL_CODE(FILE_DEVICE_USB, USB_GET_NODE_CONNECTION_NAME, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+// Most of the structures below need to be packed
+#pragma pack(push, 1)
+
+typedef struct _USB_INTERFACE_DESCRIPTOR {
+ UCHAR bLength;
+ UCHAR bDescriptorType;
+ UCHAR bInterfaceNumber;
+ UCHAR bAlternateSetting;
+ UCHAR bNumEndpoints;
+ UCHAR bInterfaceClass;
+ UCHAR bInterfaceSubClass;
+ UCHAR bInterfaceProtocol;
+ UCHAR iInterface;
+} USB_INTERFACE_DESCRIPTOR, *PUSB_INTERFACE_DESCRIPTOR;
+
+typedef struct _USB_CONFIGURATION_DESCRIPTOR {
+ UCHAR bLength;
+ UCHAR bDescriptorType;
+ USHORT wTotalLength;
+ UCHAR bNumInterfaces;
+ UCHAR bConfigurationValue;
+ UCHAR iConfiguration;
+ UCHAR bmAttributes;
+ UCHAR MaxPower;
+} USB_CONFIGURATION_DESCRIPTOR, *PUSB_CONFIGURATION_DESCRIPTOR;
+
+typedef struct _USB_CONFIGURATION_DESCRIPTOR_SHORT {
+ struct {
+ ULONG ConnectionIndex;
+ struct {
+ UCHAR bmRequest;
+ UCHAR bRequest;
+ USHORT wValue;
+ USHORT wIndex;
+ USHORT wLength;
+ } SetupPacket;
+ } req;
+ USB_CONFIGURATION_DESCRIPTOR data;
+} USB_CONFIGURATION_DESCRIPTOR_SHORT;
+
+typedef struct _USB_ENDPOINT_DESCRIPTOR {
+ UCHAR bLength;
+ UCHAR bDescriptorType;
+ UCHAR bEndpointAddress;
+ UCHAR bmAttributes;
+ USHORT wMaxPacketSize;
+ UCHAR bInterval;
+} USB_ENDPOINT_DESCRIPTOR, *PUSB_ENDPOINT_DESCRIPTOR;
+
+typedef struct _USB_DESCRIPTOR_REQUEST {
+ ULONG ConnectionIndex;
+ struct {
+ UCHAR bmRequest;
+ UCHAR bRequest;
+ USHORT wValue;
+ USHORT wIndex;
+ USHORT wLength;
+ } SetupPacket;
+// UCHAR Data[0];
+} USB_DESCRIPTOR_REQUEST, *PUSB_DESCRIPTOR_REQUEST;
+
+typedef struct _USB_HUB_DESCRIPTOR {
+ UCHAR bDescriptorLength;
+ UCHAR bDescriptorType;
+ UCHAR bNumberOfPorts;
+ USHORT wHubCharacteristics;
+ UCHAR bPowerOnToPowerGood;
+ UCHAR bHubControlCurrent;
+ UCHAR bRemoveAndPowerMask[64];
+} USB_HUB_DESCRIPTOR, *PUSB_HUB_DESCRIPTOR;
+
+typedef struct _USB_ROOT_HUB_NAME {
+ ULONG ActualLength;
+ WCHAR RootHubName[1];
+} USB_ROOT_HUB_NAME, *PUSB_ROOT_HUB_NAME;
+
+typedef struct _USB_ROOT_HUB_NAME_FIXED {
+ ULONG ActualLength;
+ WCHAR RootHubName[MAX_PATH_LENGTH];
+} USB_ROOT_HUB_NAME_FIXED;
+
+typedef struct _USB_NODE_CONNECTION_NAME {
+ ULONG ConnectionIndex;
+ ULONG ActualLength;
+ WCHAR NodeName[1];
+} USB_NODE_CONNECTION_NAME, *PUSB_NODE_CONNECTION_NAME;
+
+typedef struct _USB_NODE_CONNECTION_NAME_FIXED {
+ ULONG ConnectionIndex;
+ ULONG ActualLength;
+ WCHAR NodeName[MAX_PATH_LENGTH];
+} USB_NODE_CONNECTION_NAME_FIXED;
+
+typedef struct _USB_HUB_NAME_FIXED {
+ union {
+ USB_ROOT_HUB_NAME_FIXED root;
+ USB_NODE_CONNECTION_NAME_FIXED node;
+ } u;
+} USB_HUB_NAME_FIXED;
+
+
+typedef struct _USB_HUB_INFORMATION {
+ USB_HUB_DESCRIPTOR HubDescriptor;
+ BOOLEAN HubIsBusPowered;
+} USB_HUB_INFORMATION, *PUSB_HUB_INFORMATION;
+
+typedef struct _USB_MI_PARENT_INFORMATION {
+ ULONG NumberOfInterfaces;
+} USB_MI_PARENT_INFORMATION, *PUSB_MI_PARENT_INFORMATION;
+
+typedef struct _USB_NODE_INFORMATION {
+ USB_HUB_NODE NodeType;
+ union {
+ USB_HUB_INFORMATION HubInformation;
+ USB_MI_PARENT_INFORMATION MiParentInformation;
+ } u;
+} USB_NODE_INFORMATION, *PUSB_NODE_INFORMATION;
+
+typedef struct _USB_PIPE_INFO {
+ USB_ENDPOINT_DESCRIPTOR EndpointDescriptor;
+ ULONG ScheduleOffset;
+} USB_PIPE_INFO, *PUSB_PIPE_INFO;
+
+typedef struct _USB_NODE_CONNECTION_INFORMATION {
+ ULONG ConnectionIndex;
+ USB_DEVICE_DESCRIPTOR DeviceDescriptor;
+ UCHAR CurrentConfigurationValue;
+ BOOLEAN LowSpeed;
+ BOOLEAN DeviceIsHub;
+ USHORT DeviceAddress;
+ ULONG NumberOfOpenPipes;
+ USB_CONNECTION_STATUS ConnectionStatus;
+// USB_PIPE_INFO PipeList[0];
+} USB_NODE_CONNECTION_INFORMATION, *PUSB_NODE_CONNECTION_INFORMATION;
+
+typedef struct _USB_HUB_CAP_FLAGS {
+ ULONG HubIsHighSpeedCapable:1;
+ ULONG HubIsHighSpeed:1;
+ ULONG HubIsMultiTtCapable:1;
+ ULONG HubIsMultiTt:1;
+ ULONG HubIsRoot:1;
+ ULONG HubIsArmedWakeOnConnect:1;
+ ULONG ReservedMBZ:26;
+} USB_HUB_CAP_FLAGS, *PUSB_HUB_CAP_FLAGS;
+
+typedef struct _USB_HUB_CAPABILITIES {
+ ULONG HubIs2xCapable : 1;
+} USB_HUB_CAPABILITIES, *PUSB_HUB_CAPABILITIES;
+
+typedef struct _USB_HUB_CAPABILITIES_EX {
+ USB_HUB_CAP_FLAGS CapabilityFlags;
+} USB_HUB_CAPABILITIES_EX, *PUSB_HUB_CAPABILITIES_EX;
+
+#pragma pack(pop)
+
+/* winusb.dll interface */
+
+#define SHORT_PACKET_TERMINATE 0x01
+#define AUTO_CLEAR_STALL 0x02
+#define PIPE_TRANSFER_TIMEOUT 0x03
+#define IGNORE_SHORT_PACKETS 0x04
+#define ALLOW_PARTIAL_READS 0x05
+#define AUTO_FLUSH 0x06
+#define RAW_IO 0x07
+#define MAXIMUM_TRANSFER_SIZE 0x08
+#define AUTO_SUSPEND 0x81
+#define SUSPEND_DELAY 0x83
+#define DEVICE_SPEED 0x01
+#define LowSpeed 0x01
+#define FullSpeed 0x02
+#define HighSpeed 0x03
+
+typedef enum _USBD_PIPE_TYPE {
+ UsbdPipeTypeControl,
+ UsbdPipeTypeIsochronous,
+ UsbdPipeTypeBulk,
+ UsbdPipeTypeInterrupt
+} USBD_PIPE_TYPE;
+
+typedef struct {
+ USBD_PIPE_TYPE PipeType;
+ UCHAR PipeId;
+ USHORT MaximumPacketSize;
+ UCHAR Interval;
+} WINUSB_PIPE_INFORMATION, *PWINUSB_PIPE_INFORMATION;
+
+#pragma pack(1)
+typedef struct {
+ UCHAR request_type;
+ UCHAR request;
+ USHORT value;
+ USHORT index;
+ USHORT length;
+} WINUSB_SETUP_PACKET, *PWINUSB_SETUP_PACKET;
+#pragma pack()
+
+typedef void *WINUSB_INTERFACE_HANDLE, *PWINUSB_INTERFACE_HANDLE;
+
+DLL_DECLARE(WINAPI, BOOL, WinUsb_Initialize, (HANDLE, PWINUSB_INTERFACE_HANDLE));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_Free, (WINUSB_INTERFACE_HANDLE));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_GetAssociatedInterface, (WINUSB_INTERFACE_HANDLE, UCHAR, PWINUSB_INTERFACE_HANDLE));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_GetDescriptor, (WINUSB_INTERFACE_HANDLE, UCHAR, UCHAR, USHORT, PUCHAR, ULONG, PULONG));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_QueryInterfaceSettings, (WINUSB_INTERFACE_HANDLE, UCHAR, PUSB_INTERFACE_DESCRIPTOR));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_QueryDeviceInformation, (WINUSB_INTERFACE_HANDLE, ULONG, PULONG, PVOID));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_SetCurrentAlternateSetting, (WINUSB_INTERFACE_HANDLE, UCHAR));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_GetCurrentAlternateSetting, (WINUSB_INTERFACE_HANDLE, PUCHAR));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_QueryPipe, (WINUSB_INTERFACE_HANDLE, UCHAR, UCHAR, PWINUSB_PIPE_INFORMATION));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_SetPipePolicy, (WINUSB_INTERFACE_HANDLE, UCHAR, ULONG, ULONG, PVOID));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_GetPipePolicy, (WINUSB_INTERFACE_HANDLE, UCHAR, ULONG, PULONG, PVOID));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_ReadPipe, (WINUSB_INTERFACE_HANDLE, UCHAR, PUCHAR, ULONG, PULONG, LPOVERLAPPED));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_WritePipe, (WINUSB_INTERFACE_HANDLE, UCHAR, PUCHAR, ULONG, PULONG, LPOVERLAPPED));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_ControlTransfer, (WINUSB_INTERFACE_HANDLE, WINUSB_SETUP_PACKET, PUCHAR, ULONG, PULONG, LPOVERLAPPED));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_ResetPipe, (WINUSB_INTERFACE_HANDLE, UCHAR));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_AbortPipe, (WINUSB_INTERFACE_HANDLE, UCHAR));
+DLL_DECLARE(WINAPI, BOOL, WinUsb_FlushPipe, (WINUSB_INTERFACE_HANDLE, UCHAR));
+
+/* hid.dll interface */
+
+#define HIDP_STATUS_SUCCESS 0x110000
+typedef void* PHIDP_PREPARSED_DATA;
+
+#pragma pack(1)
+typedef struct {
+ ULONG Size;
+ USHORT VendorID;
+ USHORT ProductID;
+ USHORT VersionNumber;
+} HIDD_ATTRIBUTES, *PHIDD_ATTRIBUTES;
+#pragma pack()
+
+typedef USHORT USAGE;
+typedef struct {
+ USAGE Usage;
+ USAGE UsagePage;
+ USHORT InputReportByteLength;
+ USHORT OutputReportByteLength;
+ USHORT FeatureReportByteLength;
+ USHORT Reserved[17];
+ USHORT NumberLinkCollectionNodes;
+ USHORT NumberInputButtonCaps;
+ USHORT NumberInputValueCaps;
+ USHORT NumberInputDataIndices;
+ USHORT NumberOutputButtonCaps;
+ USHORT NumberOutputValueCaps;
+ USHORT NumberOutputDataIndices;
+ USHORT NumberFeatureButtonCaps;
+ USHORT NumberFeatureValueCaps;
+ USHORT NumberFeatureDataIndices;
+} HIDP_CAPS, *PHIDP_CAPS;
+
+typedef enum _HIDP_REPORT_TYPE {
+ HidP_Input,
+ HidP_Output,
+ HidP_Feature
+} HIDP_REPORT_TYPE;
+
+typedef struct _HIDP_VALUE_CAPS {
+ USAGE UsagePage;
+ UCHAR ReportID;
+ BOOLEAN IsAlias;
+ USHORT BitField;
+ USHORT LinkCollection;
+ USAGE LinkUsage;
+ USAGE LinkUsagePage;
+ BOOLEAN IsRange;
+ BOOLEAN IsStringRange;
+ BOOLEAN IsDesignatorRange;
+ BOOLEAN IsAbsolute;
+ BOOLEAN HasNull;
+ UCHAR Reserved;
+ USHORT BitSize;
+ USHORT ReportCount;
+ USHORT Reserved2[5];
+ ULONG UnitsExp;
+ ULONG Units;
+ LONG LogicalMin, LogicalMax;
+ LONG PhysicalMin, PhysicalMax;
+ union {
+ struct {
+ USAGE UsageMin, UsageMax;
+ USHORT StringMin, StringMax;
+ USHORT DesignatorMin, DesignatorMax;
+ USHORT DataIndexMin, DataIndexMax;
+ } Range;
+ struct {
+ USAGE Usage, Reserved1;
+ USHORT StringIndex, Reserved2;
+ USHORT DesignatorIndex, Reserved3;
+ USHORT DataIndex, Reserved4;
+ } NotRange;
+ } u;
+} HIDP_VALUE_CAPS, *PHIDP_VALUE_CAPS;
+
+DLL_DECLARE(WINAPI, BOOL, HidD_GetAttributes, (HANDLE, PHIDD_ATTRIBUTES));
+DLL_DECLARE(WINAPI, VOID, HidD_GetHidGuid, (LPGUID));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetPreparsedData, (HANDLE, PHIDP_PREPARSED_DATA *));
+DLL_DECLARE(WINAPI, BOOL, HidD_FreePreparsedData, (PHIDP_PREPARSED_DATA));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetManufacturerString, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetProductString, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetSerialNumberString, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, LONG, HidP_GetCaps, (PHIDP_PREPARSED_DATA, PHIDP_CAPS));
+DLL_DECLARE(WINAPI, BOOL, HidD_SetNumInputBuffers, (HANDLE, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_SetFeature, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetFeature, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetPhysicalDescriptor, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_GetInputReport, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_SetOutputReport, (HANDLE, PVOID, ULONG));
+DLL_DECLARE(WINAPI, BOOL, HidD_FlushQueue, (HANDLE));
+DLL_DECLARE(WINAPI, BOOL, HidP_GetValueCaps, (HIDP_REPORT_TYPE, PHIDP_VALUE_CAPS, PULONG, PHIDP_PREPARSED_DATA));