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authorTao Bao <tbao@google.com>2019-04-05 03:37:58 +0200
committerTao Bao <tbao@google.com>2019-04-19 21:53:55 +0200
commited717ca17d0b1a35f2d2e57802e2381a6004fdd1 (patch)
tree5a3082e357406f3290a4b6a08f32241601138223 /minadbd/minadbd_services.cpp
parentMerge "Allow entering rescue mode via recovery UI." (diff)
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Diffstat (limited to 'minadbd/minadbd_services.cpp')
-rw-r--r--minadbd/minadbd_services.cpp95
1 files changed, 81 insertions, 14 deletions
diff --git a/minadbd/minadbd_services.cpp b/minadbd/minadbd_services.cpp
index eaf88ecc2..136392a64 100644
--- a/minadbd/minadbd_services.cpp
+++ b/minadbd/minadbd_services.cpp
@@ -28,15 +28,19 @@
#include <string>
#include <string_view>
#include <thread>
+#include <unordered_set>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/memory.h>
+#include <android-base/parseint.h>
+#include <android-base/properties.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include "adb.h"
#include "adb_unique_fd.h"
+#include "adb_utils.h"
#include "fdevent.h"
#include "fuse_adb_provider.h"
#include "fuse_sideload.h"
@@ -87,46 +91,109 @@ static bool WaitForCommandStatus(int fd, MinadbdCommandStatus* status) {
return true;
}
-static void sideload_host_service(unique_fd sfd, const std::string& args) {
+static MinadbdErrorCode RunAdbFuseSideload(int sfd, const std::string& args,
+ MinadbdCommandStatus* status) {
+ auto pieces = android::base::Split(args, ":");
int64_t file_size;
int block_size;
- if ((sscanf(args.c_str(), "%" SCNd64 ":%d", &file_size, &block_size) != 2) || file_size <= 0 ||
- block_size <= 0) {
+ if (pieces.size() != 2 || !android::base::ParseInt(pieces[0], &file_size) || file_size <= 0 ||
+ !android::base::ParseInt(pieces[1], &block_size) || block_size <= 0) {
LOG(ERROR) << "bad sideload-host arguments: " << args;
- exit(kMinadbdPackageSizeError);
+ return kMinadbdPackageSizeError;
}
LOG(INFO) << "sideload-host file size " << file_size << ", block size " << block_size;
if (!WriteCommandToFd(MinadbdCommands::kInstall, minadbd_socket)) {
- exit(kMinadbdSocketIOError);
+ return kMinadbdSocketIOError;
}
auto adb_data_reader = std::make_unique<FuseAdbDataProvider>(sfd, file_size, block_size);
if (int result = run_fuse_sideload(std::move(adb_data_reader)); result != 0) {
LOG(ERROR) << "Failed to start fuse";
- exit(kMinadbdFuseStartError);
+ return kMinadbdFuseStartError;
+ }
+
+ if (!WaitForCommandStatus(minadbd_socket, status)) {
+ return kMinadbdMessageFormatError;
+ }
+
+ // Signal host-side adb to stop. For sideload mode, we always send kSideloadServiceExitSuccess
+ // (i.e. "DONEDONE") regardless of the install result. For rescue mode, we send failure message on
+ // install error.
+ if (!rescue_mode || *status == MinadbdCommandStatus::kSuccess) {
+ if (!android::base::WriteFully(sfd, kSideloadServiceExitSuccess,
+ strlen(kSideloadServiceExitSuccess))) {
+ return kMinadbdHostSocketIOError;
+ }
+ } else {
+ if (!android::base::WriteFully(sfd, kSideloadServiceExitFailure,
+ strlen(kSideloadServiceExitFailure))) {
+ return kMinadbdHostSocketIOError;
+ }
}
+ return kMinadbdSuccess;
+}
+
+// Sideload service always exits after serving an install command.
+static void SideloadHostService(unique_fd sfd, const std::string& args) {
MinadbdCommandStatus status;
- if (!WaitForCommandStatus(minadbd_socket, &status)) {
- exit(kMinadbdMessageFormatError);
+ exit(RunAdbFuseSideload(sfd.get(), args, &status));
+}
+
+// Rescue service waits for the next command after an install command.
+static void RescueInstallHostService(unique_fd sfd, const std::string& args) {
+ MinadbdCommandStatus status;
+ if (auto result = RunAdbFuseSideload(sfd.get(), args, &status); result != kMinadbdSuccess) {
+ exit(result);
+ }
+}
+
+static void RescueGetpropHostService(unique_fd sfd, const std::string& prop) {
+ static const std::unordered_set<std::string> kGetpropAllowedProps = {
+ "ro.build.fingerprint",
+ "ro.build.date.utc",
+ };
+ auto allowed = kGetpropAllowedProps.find(prop) != kGetpropAllowedProps.end();
+ if (!allowed) {
+ return;
}
- LOG(INFO) << "Got command status: " << static_cast<unsigned int>(status);
- LOG(INFO) << "sideload_host finished";
- exit(kMinadbdSuccess);
+ auto result = android::base::GetProperty(prop, "");
+ if (result.empty()) {
+ return;
+ }
+ if (!android::base::WriteFully(sfd, result.data(), result.size())) {
+ exit(kMinadbdHostSocketIOError);
+ }
}
unique_fd daemon_service_to_fd(std::string_view name, atransport* /* transport */) {
+ if (rescue_mode) {
+ if (ConsumePrefix(&name, "rescue-install:")) {
+ // rescue-install:<file-size>:<block-size>
+ std::string args(name);
+ return create_service_thread(
+ "rescue-install", std::bind(RescueInstallHostService, std::placeholders::_1, args));
+ } else if (ConsumePrefix(&name, "rescue-getprop:")) {
+ // rescue-getprop:<prop>
+ std::string args(name);
+ return create_service_thread(
+ "rescue-getprop", std::bind(RescueGetpropHostService, std::placeholders::_1, args));
+ }
+ return unique_fd{};
+ }
+
if (name.starts_with("sideload:")) {
// This exit status causes recovery to print a special error message saying to use a newer adb
// (that supports sideload-host).
exit(kMinadbdAdbVersionError);
- } else if (name.starts_with("sideload-host:")) {
- std::string arg(name.substr(strlen("sideload-host:")));
+ } else if (ConsumePrefix(&name, "sideload-host:")) {
+ // sideload-host:<file-size>:<block-size>
+ std::string args(name);
return create_service_thread("sideload-host",
- std::bind(sideload_host_service, std::placeholders::_1, arg));
+ std::bind(SideloadHostService, std::placeholders::_1, args));
}
return unique_fd{};
}