1 files changed, 198 insertions, 0 deletions

diff --git a/tests/unit/uncrypt_test.cpp b/tests/unit/uncrypt_test.cpp
new file mode 100644
index 000000000..e97d589a6
--- /dev/null
+++ b/tests/unit/uncrypt_test.cpp
@@ -0,0 +1,198 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <arpa/inet.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+#include <algorithm>
+#include <string>
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/unique_fd.h>
+#include <bootloader_message/bootloader_message.h>
+#include <gtest/gtest.h>
+
+using namespace std::string_literals;
+
+static const std::string UNCRYPT_SOCKET = "/dev/socket/uncrypt";
+static const std::string INIT_SVC_SETUP_BCB = "init.svc.setup-bcb";
+static const std::string INIT_SVC_CLEAR_BCB = "init.svc.clear-bcb";
+static const std::string INIT_SVC_UNCRYPT = "init.svc.uncrypt";
+static constexpr int SOCKET_CONNECTION_MAX_RETRY = 30;
+
+static void StopService() {
+  ASSERT_TRUE(android::base::SetProperty("ctl.stop", "setup-bcb"));
+  ASSERT_TRUE(android::base::SetProperty("ctl.stop", "clear-bcb"));
+  ASSERT_TRUE(android::base::SetProperty("ctl.stop", "uncrypt"));
+
+  bool success = false;
+  for (int retry = 0; retry < SOCKET_CONNECTION_MAX_RETRY; retry++) {
+    std::string setup_bcb = android::base::GetProperty(INIT_SVC_SETUP_BCB, "");
+    std::string clear_bcb = android::base::GetProperty(INIT_SVC_CLEAR_BCB, "");
+    std::string uncrypt = android::base::GetProperty(INIT_SVC_UNCRYPT, "");
+    GTEST_LOG_(INFO) << "setup-bcb: [" << setup_bcb << "] clear-bcb: [" << clear_bcb
+                     << "] uncrypt: [" << uncrypt << "]";
+    if (setup_bcb != "running" && clear_bcb != "running" && uncrypt != "running") {
+      success = true;
+      break;
+    }
+    sleep(1);
+  }
+
+  ASSERT_TRUE(success) << "uncrypt service is not available.";
+}
+
+class UncryptTest : public ::testing::Test {
+ protected:
+  UncryptTest() : has_misc(true) {}
+
+  void SetUp() override {
+    std::string err;
+    has_misc = !get_bootloader_message_blk_device(&err).empty();
+  }
+
+  void TearDown() override {
+    // Clear the BCB.
+    if (has_misc) {
+      std::string err;
+      ASSERT_TRUE(clear_bootloader_message(&err)) << "Failed to clear BCB: " << err;
+    }
+  }
+
+  void SetupOrClearBcb(bool isSetup, const std::string& message,
+                       const std::string& message_in_bcb) const {
+    // Restart the setup-bcb service.
+    StopService();
+    ASSERT_TRUE(android::base::SetProperty("ctl.start", isSetup ? "setup-bcb" : "clear-bcb"));
+
+    // Test tends to be flaky if proceeding immediately ("Transport endpoint is not connected").
+    sleep(1);
+
+    sockaddr_un un = {};
+    un.sun_family = AF_UNIX;
+    strlcpy(un.sun_path, UNCRYPT_SOCKET.c_str(), sizeof(un.sun_path));
+
+    int sockfd = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0);
+    ASSERT_NE(-1, sockfd);
+
+    // Connect to the uncrypt socket.
+    bool success = false;
+    for (int retry = 0; retry < SOCKET_CONNECTION_MAX_RETRY; retry++) {
+      if (connect(sockfd, reinterpret_cast<sockaddr*>(&un), sizeof(sockaddr_un)) != 0) {
+        success = true;
+        break;
+      }
+      sleep(1);
+    }
+    ASSERT_TRUE(success);
+
+    if (isSetup) {
+      // Send out the BCB message.
+      int length = static_cast<int>(message.size());
+      int length_out = htonl(length);
+      ASSERT_TRUE(android::base::WriteFully(sockfd, &length_out, sizeof(int)))
+          << "Failed to write length: " << strerror(errno);
+      ASSERT_TRUE(android::base::WriteFully(sockfd, message.data(), length))
+          << "Failed to write message: " << strerror(errno);
+    }
+
+    // Check the status code from uncrypt.
+    int status;
+    ASSERT_TRUE(android::base::ReadFully(sockfd, &status, sizeof(int)));
+    ASSERT_EQ(100U, ntohl(status));
+
+    // Ack having received the status code.
+    int code = 0;
+    ASSERT_TRUE(android::base::WriteFully(sockfd, &code, sizeof(int)));
+
+    ASSERT_EQ(0, close(sockfd));
+
+    ASSERT_TRUE(android::base::SetProperty("ctl.stop", isSetup ? "setup-bcb" : "clear-bcb"));
+
+    // Verify the message by reading from BCB directly.
+    bootloader_message boot;
+    std::string err;
+    ASSERT_TRUE(read_bootloader_message(&boot, &err)) << "Failed to read BCB: " << err;
+
+    if (isSetup) {
+      ASSERT_EQ("boot-recovery", std::string(boot.command));
+      ASSERT_EQ(message_in_bcb, std::string(boot.recovery));
+
+      // The rest of the boot.recovery message should be zero'd out.
+      ASSERT_LE(message_in_bcb.size(), sizeof(boot.recovery));
+      size_t left = sizeof(boot.recovery) - message_in_bcb.size();
+      ASSERT_EQ(std::string(left, '\0'), std::string(&boot.recovery[message_in_bcb.size()], left));
+
+      // Clear the BCB.
+      ASSERT_TRUE(clear_bootloader_message(&err)) << "Failed to clear BCB: " << err;
+    } else {
+      // All the bytes should be cleared.
+      ASSERT_EQ(std::string(sizeof(boot), '\0'),
+                std::string(reinterpret_cast<const char*>(&boot), sizeof(boot)));
+    }
+  }
+
+  void VerifyBootloaderMessage(const std::string& expected) {
+    std::string err;
+    bootloader_message boot;
+    ASSERT_TRUE(read_bootloader_message(&boot, &err)) << "Failed to read BCB: " << err;
+
+    // Check that we have all the expected bytes.
+    ASSERT_EQ(expected, std::string(reinterpret_cast<const char*>(&boot), sizeof(boot)));
+  }
+
+  bool has_misc;
+};
+
+TEST_F(UncryptTest, setup_bcb) {
+  if (!has_misc) {
+    GTEST_LOG_(INFO) << "Test skipped due to no /misc partition found on the device.";
+    return;
+  }
+
+  std::string random_data;
+  random_data.reserve(sizeof(bootloader_message));
+  generate_n(back_inserter(random_data), sizeof(bootloader_message), []() { return rand() % 128; });
+
+  bootloader_message boot;
+  memcpy(&boot, random_data.c_str(), random_data.size());
+
+  std::string err;
+  ASSERT_TRUE(write_bootloader_message(boot, &err)) << "Failed to write BCB: " << err;
+  VerifyBootloaderMessage(random_data);
+
+  ASSERT_TRUE(clear_bootloader_message(&err)) << "Failed to clear BCB: " << err;
+  VerifyBootloaderMessage(std::string(sizeof(bootloader_message), '\0'));
+
+  std::string message = "--update_message=abc value";
+  std::string message_in_bcb = "recovery\n--update_message=abc value\n";
+  SetupOrClearBcb(true, message, message_in_bcb);
+
+  SetupOrClearBcb(false, "", "");
+
+  TemporaryFile wipe_package;
+  ASSERT_TRUE(android::base::WriteStringToFile(std::string(345, 'a'), wipe_package.path));
+
+  // It's expected to store a wipe package in /misc, with the package size passed to recovery.
+  message = "--wipe_ab\n--wipe_package="s + wipe_package.path + "\n--reason=wipePackage"s;
+  message_in_bcb = "recovery\n--wipe_ab\n--wipe_package_size=345\n--reason=wipePackage\n";
+  SetupOrClearBcb(true, message, message_in_bcb);
+}