1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <arpa/inet.h> 18 #include <sys/socket.h> 19 #include <sys/types.h> 20 #include <sys/un.h> 21 #include <unistd.h> 22 23 #include <string> 24 25 #include <android-base/file.h> 26 #include <android-base/logging.h> 27 #include <android-base/properties.h> 28 #include <android-base/test_utils.h> 29 #include <android-base/unique_fd.h> 30 #include <bootloader_message/bootloader_message.h> 31 #include <gtest/gtest.h> 32 33 using namespace std::string_literals; 34 35 static const std::string UNCRYPT_SOCKET = "/dev/socket/uncrypt"; 36 static const std::string INIT_SVC_SETUP_BCB = "init.svc.setup-bcb"; 37 static const std::string INIT_SVC_CLEAR_BCB = "init.svc.clear-bcb"; 38 static const std::string INIT_SVC_UNCRYPT = "init.svc.uncrypt"; 39 static constexpr int SOCKET_CONNECTION_MAX_RETRY = 30; 40 41 class UncryptTest : public ::testing::Test { 42 protected: 43 UncryptTest() : has_misc(true) {} 44 45 virtual void SetUp() override { 46 ASSERT_TRUE(android::base::SetProperty("ctl.stop", "setup-bcb")); 47 ASSERT_TRUE(android::base::SetProperty("ctl.stop", "clear-bcb")); 48 ASSERT_TRUE(android::base::SetProperty("ctl.stop", "uncrypt")); 49 50 bool success = false; 51 for (int retry = 0; retry < SOCKET_CONNECTION_MAX_RETRY; retry++) { 52 std::string setup_bcb = android::base::GetProperty(INIT_SVC_SETUP_BCB, ""); 53 std::string clear_bcb = android::base::GetProperty(INIT_SVC_CLEAR_BCB, ""); 54 std::string uncrypt = android::base::GetProperty(INIT_SVC_UNCRYPT, ""); 55 LOG(INFO) << "setup-bcb: [" << setup_bcb << "] clear-bcb: [" << clear_bcb << "] uncrypt: [" 56 << uncrypt << "]"; 57 if (setup_bcb != "running" && clear_bcb != "running" && uncrypt != "running") { 58 success = true; 59 break; 60 } 61 sleep(1); 62 } 63 64 ASSERT_TRUE(success) << "uncrypt service is not available."; 65 66 std::string err; 67 has_misc = !get_bootloader_message_blk_device(&err).empty(); 68 } 69 70 void SetupOrClearBcb(bool isSetup, const std::string& message, 71 const std::string& message_in_bcb) const { 72 if (!has_misc) { 73 GTEST_LOG_(INFO) << "Test skipped due to no /misc partition found on the device."; 74 return; 75 } 76 77 // Trigger the setup-bcb service. 78 ASSERT_TRUE(android::base::SetProperty("ctl.start", isSetup ? "setup-bcb" : "clear-bcb")); 79 80 // Test tends to be flaky if proceeding immediately ("Transport endpoint is not connected"). 81 sleep(1); 82 83 sockaddr_un un = {}; 84 un.sun_family = AF_UNIX; 85 strlcpy(un.sun_path, UNCRYPT_SOCKET.c_str(), sizeof(un.sun_path)); 86 87 int sockfd = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0); 88 ASSERT_NE(-1, sockfd); 89 90 // Connect to the uncrypt socket. 91 bool success = false; 92 for (int retry = 0; retry < SOCKET_CONNECTION_MAX_RETRY; retry++) { 93 if (connect(sockfd, reinterpret_cast<sockaddr*>(&un), sizeof(sockaddr_un)) != 0) { 94 success = true; 95 break; 96 } 97 sleep(1); 98 } 99 ASSERT_TRUE(success); 100 101 if (isSetup) { 102 // Send out the BCB message. 103 int length = static_cast<int>(message.size()); 104 int length_out = htonl(length); 105 ASSERT_TRUE(android::base::WriteFully(sockfd, &length_out, sizeof(int))) 106 << "Failed to write length: " << strerror(errno); 107 ASSERT_TRUE(android::base::WriteFully(sockfd, message.data(), length)) 108 << "Failed to write message: " << strerror(errno); 109 } 110 111 // Check the status code from uncrypt. 112 int status; 113 ASSERT_TRUE(android::base::ReadFully(sockfd, &status, sizeof(int))); 114 ASSERT_EQ(100U, ntohl(status)); 115 116 // Ack having received the status code. 117 int code = 0; 118 ASSERT_TRUE(android::base::WriteFully(sockfd, &code, sizeof(int))); 119 120 ASSERT_EQ(0, close(sockfd)); 121 122 ASSERT_TRUE(android::base::SetProperty("ctl.stop", isSetup ? "setup-bcb" : "clear-bcb")); 123 124 // Verify the message by reading from BCB directly. 125 bootloader_message boot; 126 std::string err; 127 ASSERT_TRUE(read_bootloader_message(&boot, &err)) << "Failed to read BCB: " << err; 128 129 if (isSetup) { 130 ASSERT_EQ("boot-recovery", std::string(boot.command)); 131 ASSERT_EQ(message_in_bcb, std::string(boot.recovery)); 132 133 // The rest of the boot.recovery message should be zero'd out. 134 ASSERT_LE(message_in_bcb.size(), sizeof(boot.recovery)); 135 size_t left = sizeof(boot.recovery) - message_in_bcb.size(); 136 ASSERT_EQ(std::string(left, '\0'), std::string(&boot.recovery[message_in_bcb.size()], left)); 137 138 // Clear the BCB. 139 ASSERT_TRUE(clear_bootloader_message(&err)) << "Failed to clear BCB: " << err; 140 } else { 141 // All the bytes should be cleared. 142 ASSERT_EQ(std::string(sizeof(boot), '\0'), 143 std::string(reinterpret_cast<const char*>(&boot), sizeof(boot))); 144 } 145 } 146 147 bool has_misc; 148 }; 149 150 TEST_F(UncryptTest, setup_bcb) { 151 std::string message = "--update_message=abc value"; 152 std::string message_in_bcb = "recovery\n--update_message=abc value\n"; 153 SetupOrClearBcb(true, message, message_in_bcb); 154 } 155 156 TEST_F(UncryptTest, clear_bcb) { 157 SetupOrClearBcb(false, "", ""); 158 } 159 160 TEST_F(UncryptTest, setup_bcb_wipe_ab) { 161 TemporaryFile wipe_package; 162 ASSERT_TRUE(android::base::WriteStringToFile(std::string(345, 'a'), wipe_package.path)); 163 164 // It's expected to store a wipe package in /misc, with the package size passed to recovery. 165 std::string message = 166 "--wipe_ab\n--wipe_package="s + wipe_package.path + "\n--reason=wipePackage"s; 167 std::string message_in_bcb = 168 "recovery\n--wipe_ab\n--wipe_package_size=345\n--reason=wipePackage\n"; 169 SetupOrClearBcb(true, message, message_in_bcb); 170 } 171
