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The Android Open Source Projectc24a8e62009-03-03 19:28:42 -08001/*
2 * Copyright (C) 2007 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
Tao Bao20c581e2016-12-28 20:55:51 -080017#include "install.h"
18
Doug Zongkerb2ee9202009-06-04 10:24:53 -070019#include <ctype.h>
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080020#include <errno.h>
21#include <fcntl.h>
Alex Deymo4e29ce02016-08-12 13:43:04 -070022#include <inttypes.h>
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080023#include <limits.h>
Elliott Hughes26dbad22015-01-28 12:09:05 -080024#include <string.h>
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080025#include <sys/stat.h>
Doug Zongkerb2ee9202009-06-04 10:24:53 -070026#include <sys/wait.h>
27#include <unistd.h>
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080028
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -070029#include <algorithm>
Tianjie Xu37957102017-06-07 17:59:55 -070030#include <atomic>
Elliott Hughes8febafa2016-04-13 16:39:56 -070031#include <chrono>
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -070032#include <condition_variable>
Tao Bao5e535012017-03-16 17:37:38 -070033#include <functional>
Alex Deymo4344d632016-08-03 21:03:53 -070034#include <limits>
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -070035#include <mutex>
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -070036#include <thread>
Tao Bao71e3e092016-02-02 14:02:27 -080037#include <vector>
38
Tianjie Xue16e7992016-09-09 10:55:44 -070039#include <android-base/file.h>
40#include <android-base/logging.h>
Tao Bao20c581e2016-12-28 20:55:51 -080041#include <android-base/parsedouble.h>
Tianjie Xub0ddae52016-06-08 14:30:04 -070042#include <android-base/parseint.h>
Tao Baoefc35592017-01-08 22:45:47 -080043#include <android-base/properties.h>
Tianjie Xu16255832016-04-30 11:49:59 -070044#include <android-base/stringprintf.h>
45#include <android-base/strings.h>
Tao Baocf60a442018-06-18 14:56:20 -070046#include <android-base/unique_fd.h>
Tao Bao919d2c92017-04-10 16:55:57 -070047#include <vintf/VintfObjectRecovery.h>
Tianjie Xu16255832016-04-30 11:49:59 -070048
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080049#include "common.h"
Tao Bao1fc5bf32017-10-06 07:43:41 -070050#include "otautil/error_code.h"
Tao Bao641fa972018-04-25 18:59:40 -070051#include "otautil/paths.h"
Tao Bao17054c02018-05-03 22:41:23 -070052#include "otautil/sysutil.h"
53#include "otautil/thermalutil.h"
xunchangf07ed2e2019-02-25 14:14:01 -080054#include "package.h"
Tao Bao00d57572017-05-02 15:48:54 -070055#include "private/install.h"
Tianjie Xub5108c32018-08-20 13:40:47 -070056#include "recovery_ui/ui.h"
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080057#include "roots.h"
Mattias Nissler452df6d2016-04-04 16:17:01 +020058#include "verifier.h"
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080059
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -070060using namespace std::chrono_literals;
61
Doug Zongker74406302011-10-28 15:13:10 -070062// Default allocation of progress bar segments to operations
Tao Bao20c581e2016-12-28 20:55:51 -080063static constexpr int VERIFICATION_PROGRESS_TIME = 60;
64static constexpr float VERIFICATION_PROGRESS_FRACTION = 0.25;
Doug Zongker74406302011-10-28 15:13:10 -070065
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -070066static std::condition_variable finish_log_temperature;
67
Tianjie Xu93b5bf22018-10-25 10:39:01 -070068bool ReadMetadataFromPackage(ZipArchiveHandle zip, std::map<std::string, std::string>* metadata) {
Tao Bao8a7afcc2017-04-18 22:05:50 -070069 CHECK(metadata != nullptr);
Tianjie Xub0ddae52016-06-08 14:30:04 -070070
Tao Bao8a7afcc2017-04-18 22:05:50 -070071 static constexpr const char* METADATA_PATH = "META-INF/com/android/metadata";
72 ZipString path(METADATA_PATH);
73 ZipEntry entry;
74 if (FindEntry(zip, path, &entry) != 0) {
75 LOG(ERROR) << "Failed to find " << METADATA_PATH;
76 return false;
77 }
78
79 uint32_t length = entry.uncompressed_length;
Tianjie Xu93b5bf22018-10-25 10:39:01 -070080 std::string metadata_string(length, '\0');
81 int32_t err =
82 ExtractToMemory(zip, &entry, reinterpret_cast<uint8_t*>(&metadata_string[0]), length);
Tao Bao8a7afcc2017-04-18 22:05:50 -070083 if (err != 0) {
84 LOG(ERROR) << "Failed to extract " << METADATA_PATH << ": " << ErrorCodeString(err);
85 return false;
86 }
Tianjie Xu93b5bf22018-10-25 10:39:01 -070087
88 for (const std::string& line : android::base::Split(metadata_string, "\n")) {
89 size_t eq = line.find('=');
90 if (eq != std::string::npos) {
91 metadata->emplace(android::base::Trim(line.substr(0, eq)),
92 android::base::Trim(line.substr(eq + 1)));
93 }
94 }
95
Tao Bao8a7afcc2017-04-18 22:05:50 -070096 return true;
Yabin Cui6faf0262016-06-09 14:09:39 -070097}
98
Tianjie Xu93b5bf22018-10-25 10:39:01 -070099// Gets the value for the given key in |metadata|. Returns an emtpy string if the key isn't
100// present.
101static std::string get_value(const std::map<std::string, std::string>& metadata,
102 const std::string& key) {
103 const auto& it = metadata.find(key);
104 return (it == metadata.end()) ? "" : it->second;
105}
106
107static std::string OtaTypeToString(OtaType type) {
108 switch (type) {
109 case OtaType::AB:
110 return "AB";
111 case OtaType::BLOCK:
112 return "BLOCK";
113 case OtaType::BRICK:
114 return "BRICK";
Tao Bao8a7afcc2017-04-18 22:05:50 -0700115 }
Tianjie Xub0ddae52016-06-08 14:30:04 -0700116}
117
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700118// Read the build.version.incremental of src/tgt from the metadata and log it to last_install.
119static void ReadSourceTargetBuild(const std::map<std::string, std::string>& metadata,
120 std::vector<std::string>* log_buffer) {
121 // Examples of the pre-build and post-build strings in metadata:
122 // pre-build-incremental=2943039
123 // post-build-incremental=2951741
124 auto source_build = get_value(metadata, "pre-build-incremental");
125 if (!source_build.empty()) {
126 log_buffer->push_back("source_build: " + source_build);
127 }
128
129 auto target_build = get_value(metadata, "post-build-incremental");
130 if (!target_build.empty()) {
131 log_buffer->push_back("target_build: " + target_build);
132 }
133}
134
135// Checks the build version, fingerprint and timestamp in the metadata of the A/B package.
136// Downgrading is not allowed unless explicitly enabled in the package and only for
Tao Baocf60a442018-06-18 14:56:20 -0700137// incremental packages.
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700138static int CheckAbSpecificMetadata(const std::map<std::string, std::string>& metadata) {
Tao Baoefc35592017-01-08 22:45:47 -0800139 // Incremental updates should match the current build.
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700140 auto device_pre_build = android::base::GetProperty("ro.build.version.incremental", "");
141 auto pkg_pre_build = get_value(metadata, "pre-build-incremental");
142 if (!pkg_pre_build.empty() && pkg_pre_build != device_pre_build) {
143 LOG(ERROR) << "Package is for source build " << pkg_pre_build << " but expected "
144 << device_pre_build;
Tao Baoefc35592017-01-08 22:45:47 -0800145 return INSTALL_ERROR;
146 }
Alex Deymo4344d632016-08-03 21:03:53 -0700147
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700148 auto device_fingerprint = android::base::GetProperty("ro.build.fingerprint", "");
149 auto pkg_pre_build_fingerprint = get_value(metadata, "pre-build");
150 if (!pkg_pre_build_fingerprint.empty() && pkg_pre_build_fingerprint != device_fingerprint) {
Tao Baoefc35592017-01-08 22:45:47 -0800151 LOG(ERROR) << "Package is for source build " << pkg_pre_build_fingerprint << " but expected "
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700152 << device_fingerprint;
Tao Baoefc35592017-01-08 22:45:47 -0800153 return INSTALL_ERROR;
154 }
Alex Deymo4344d632016-08-03 21:03:53 -0700155
Tao Baoefc35592017-01-08 22:45:47 -0800156 // Check for downgrade version.
157 int64_t build_timestamp =
158 android::base::GetIntProperty("ro.build.date.utc", std::numeric_limits<int64_t>::max());
159 int64_t pkg_post_timestamp = 0;
160 // We allow to full update to the same version we are running, in case there
161 // is a problem with the current copy of that version.
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700162 auto pkg_post_timestamp_string = get_value(metadata, "post-timestamp");
163 if (pkg_post_timestamp_string.empty() ||
164 !android::base::ParseInt(pkg_post_timestamp_string, &pkg_post_timestamp) ||
Tao Baoefc35592017-01-08 22:45:47 -0800165 pkg_post_timestamp < build_timestamp) {
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700166 if (get_value(metadata, "ota-downgrade") != "yes") {
Tao Baoefc35592017-01-08 22:45:47 -0800167 LOG(ERROR) << "Update package is older than the current build, expected a build "
168 "newer than timestamp "
169 << build_timestamp << " but package has timestamp " << pkg_post_timestamp
170 << " and downgrade not allowed.";
171 return INSTALL_ERROR;
172 }
173 if (pkg_pre_build_fingerprint.empty()) {
174 LOG(ERROR) << "Downgrade package must have a pre-build version set, not allowed.";
175 return INSTALL_ERROR;
176 }
177 }
178
179 return 0;
Alex Deymo4344d632016-08-03 21:03:53 -0700180}
181
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700182int CheckPackageMetadata(const std::map<std::string, std::string>& metadata, OtaType ota_type) {
183 auto package_ota_type = get_value(metadata, "ota-type");
184 auto expected_ota_type = OtaTypeToString(ota_type);
185 if (ota_type != OtaType::AB && ota_type != OtaType::BRICK) {
186 LOG(INFO) << "Skip package metadata check for ota type " << expected_ota_type;
187 return 0;
188 }
189
190 if (package_ota_type != expected_ota_type) {
191 LOG(ERROR) << "Unexpected ota package type, expects " << expected_ota_type << ", actual "
192 << package_ota_type;
193 return INSTALL_ERROR;
194 }
195
196 auto device = android::base::GetProperty("ro.product.device", "");
197 auto pkg_device = get_value(metadata, "pre-device");
198 if (pkg_device != device || pkg_device.empty()) {
199 LOG(ERROR) << "Package is for product " << pkg_device << " but expected " << device;
200 return INSTALL_ERROR;
201 }
202
203 // We allow the package to not have any serialno; and we also allow it to carry multiple serial
204 // numbers split by "|"; e.g. serialno=serialno1|serialno2|serialno3 ... We will fail the
205 // verification if the device's serialno doesn't match any of these carried numbers.
206 auto pkg_serial_no = get_value(metadata, "serialno");
207 if (!pkg_serial_no.empty()) {
208 auto device_serial_no = android::base::GetProperty("ro.serialno", "");
209 bool serial_number_match = false;
210 for (const auto& number : android::base::Split(pkg_serial_no, "|")) {
211 if (device_serial_no == android::base::Trim(number)) {
212 serial_number_match = true;
213 }
214 }
215 if (!serial_number_match) {
216 LOG(ERROR) << "Package is for serial " << pkg_serial_no;
217 return INSTALL_ERROR;
218 }
219 }
220
221 if (ota_type == OtaType::AB) {
222 return CheckAbSpecificMetadata(metadata);
223 }
224
225 return 0;
226}
227
Tao Baocf60a442018-06-18 14:56:20 -0700228int SetUpAbUpdateCommands(const std::string& package, ZipArchiveHandle zip, int status_fd,
Tao Bao00d57572017-05-02 15:48:54 -0700229 std::vector<std::string>* cmd) {
Tao Baobc4b1fe2017-04-17 16:46:05 -0700230 CHECK(cmd != nullptr);
Alex Deymo4344d632016-08-03 21:03:53 -0700231
Tao Baobc4b1fe2017-04-17 16:46:05 -0700232 // For A/B updates we extract the payload properties to a buffer and obtain the RAW payload offset
233 // in the zip file.
234 static constexpr const char* AB_OTA_PAYLOAD_PROPERTIES = "payload_properties.txt";
235 ZipString property_name(AB_OTA_PAYLOAD_PROPERTIES);
236 ZipEntry properties_entry;
237 if (FindEntry(zip, property_name, &properties_entry) != 0) {
238 LOG(ERROR) << "Failed to find " << AB_OTA_PAYLOAD_PROPERTIES;
239 return INSTALL_CORRUPT;
240 }
241 uint32_t properties_entry_length = properties_entry.uncompressed_length;
242 std::vector<uint8_t> payload_properties(properties_entry_length);
243 int32_t err =
244 ExtractToMemory(zip, &properties_entry, payload_properties.data(), properties_entry_length);
245 if (err != 0) {
246 LOG(ERROR) << "Failed to extract " << AB_OTA_PAYLOAD_PROPERTIES << ": " << ErrorCodeString(err);
247 return INSTALL_CORRUPT;
248 }
Alex Deymo4344d632016-08-03 21:03:53 -0700249
Tao Baobc4b1fe2017-04-17 16:46:05 -0700250 static constexpr const char* AB_OTA_PAYLOAD = "payload.bin";
251 ZipString payload_name(AB_OTA_PAYLOAD);
252 ZipEntry payload_entry;
253 if (FindEntry(zip, payload_name, &payload_entry) != 0) {
254 LOG(ERROR) << "Failed to find " << AB_OTA_PAYLOAD;
255 return INSTALL_CORRUPT;
256 }
257 long payload_offset = payload_entry.offset;
258 *cmd = {
Tao Bao2cc9bbb2018-08-14 12:34:46 -0700259 "/system/bin/update_engine_sideload",
Tao Bao00d57572017-05-02 15:48:54 -0700260 "--payload=file://" + package,
Tao Baobc4b1fe2017-04-17 16:46:05 -0700261 android::base::StringPrintf("--offset=%ld", payload_offset),
262 "--headers=" + std::string(payload_properties.begin(), payload_properties.end()),
263 android::base::StringPrintf("--status_fd=%d", status_fd),
264 };
265 return 0;
Alex Deymo4344d632016-08-03 21:03:53 -0700266}
267
Tao Baocf60a442018-06-18 14:56:20 -0700268int SetUpNonAbUpdateCommands(const std::string& package, ZipArchiveHandle zip, int retry_count,
269 int status_fd, std::vector<std::string>* cmd) {
Tao Baobc4b1fe2017-04-17 16:46:05 -0700270 CHECK(cmd != nullptr);
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700271
Tao Baocf60a442018-06-18 14:56:20 -0700272 // In non-A/B updates we extract the update binary from the package.
Tao Baobc4b1fe2017-04-17 16:46:05 -0700273 static constexpr const char* UPDATE_BINARY_NAME = "META-INF/com/google/android/update-binary";
274 ZipString binary_name(UPDATE_BINARY_NAME);
275 ZipEntry binary_entry;
276 if (FindEntry(zip, binary_name, &binary_entry) != 0) {
277 LOG(ERROR) << "Failed to find update binary " << UPDATE_BINARY_NAME;
278 return INSTALL_CORRUPT;
279 }
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700280
Tao Baocf60a442018-06-18 14:56:20 -0700281 const std::string binary_path = Paths::Get().temporary_update_binary();
Tao Bao00d57572017-05-02 15:48:54 -0700282 unlink(binary_path.c_str());
Tao Baocf60a442018-06-18 14:56:20 -0700283 android::base::unique_fd fd(
284 open(binary_path.c_str(), O_CREAT | O_WRONLY | O_TRUNC | O_CLOEXEC, 0755));
Tao Baobc4b1fe2017-04-17 16:46:05 -0700285 if (fd == -1) {
Tao Bao00d57572017-05-02 15:48:54 -0700286 PLOG(ERROR) << "Failed to create " << binary_path;
Tao Baobc4b1fe2017-04-17 16:46:05 -0700287 return INSTALL_ERROR;
288 }
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700289
Tao Baobc4b1fe2017-04-17 16:46:05 -0700290 int32_t error = ExtractEntryToFile(zip, &binary_entry, fd);
Tao Baobc4b1fe2017-04-17 16:46:05 -0700291 if (error != 0) {
292 LOG(ERROR) << "Failed to extract " << UPDATE_BINARY_NAME << ": " << ErrorCodeString(error);
293 return INSTALL_ERROR;
294 }
295
Tao Bao6fcd2082019-01-16 09:29:17 -0800296 // When executing the update binary contained in the package, the arguments passed are:
297 // - the version number for this interface
298 // - an FD to which the program can write in order to update the progress bar.
299 // - the name of the package zip file.
300 // - an optional argument "retry" if this update is a retry of a failed update attempt.
Tao Baobc4b1fe2017-04-17 16:46:05 -0700301 *cmd = {
Tao Bao00d57572017-05-02 15:48:54 -0700302 binary_path,
Tao Baobd0ddcd2017-05-04 13:03:18 -0700303 std::to_string(kRecoveryApiVersion),
Tao Baobc4b1fe2017-04-17 16:46:05 -0700304 std::to_string(status_fd),
Tao Bao00d57572017-05-02 15:48:54 -0700305 package,
Tao Baobc4b1fe2017-04-17 16:46:05 -0700306 };
307 if (retry_count > 0) {
308 cmd->push_back("retry");
309 }
310 return 0;
Alex Deymo4344d632016-08-03 21:03:53 -0700311}
Alex Deymo4344d632016-08-03 21:03:53 -0700312
Tianjie Xu37957102017-06-07 17:59:55 -0700313static void log_max_temperature(int* max_temperature, const std::atomic<bool>& logger_finished) {
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700314 CHECK(max_temperature != nullptr);
315 std::mutex mtx;
316 std::unique_lock<std::mutex> lck(mtx);
Tianjie Xu37957102017-06-07 17:59:55 -0700317 while (!logger_finished.load() &&
318 finish_log_temperature.wait_for(lck, 20s) == std::cv_status::timeout) {
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700319 *max_temperature = std::max(*max_temperature, GetMaxValueFromThermalZone());
320 }
321}
322
Alex Deymo4344d632016-08-03 21:03:53 -0700323// If the package contains an update binary, extract it and run it.
Tao Bao00d57572017-05-02 15:48:54 -0700324static int try_update_binary(const std::string& package, ZipArchiveHandle zip, bool* wipe_cache,
Tao Bao29ee69b2017-05-01 12:23:17 -0700325 std::vector<std::string>* log_buffer, int retry_count,
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700326 int* max_temperature) {
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700327 std::map<std::string, std::string> metadata;
328 if (!ReadMetadataFromPackage(zip, &metadata)) {
329 LOG(ERROR) << "Failed to parse metadata in the zip file";
330 return INSTALL_CORRUPT;
331 }
332
333 bool is_ab = android::base::GetBoolProperty("ro.build.ab_update", false);
334 // Verifies against the metadata in the package first.
335 if (int check_status = is_ab ? CheckPackageMetadata(metadata, OtaType::AB) : 0;
336 check_status != 0) {
337 log_buffer->push_back(android::base::StringPrintf("error: %d", kUpdateBinaryCommandFailure));
338 return check_status;
339 }
340
341 ReadSourceTargetBuild(metadata, log_buffer);
Alex Deymo4344d632016-08-03 21:03:53 -0700342
Tao Bao6fcd2082019-01-16 09:29:17 -0800343 // The updater in child process writes to the pipe to communicate with recovery.
344 android::base::unique_fd pipe_read, pipe_write;
345 if (!android::base::Pipe(&pipe_read, &pipe_write)) {
346 PLOG(ERROR) << "Failed to create pipe for updater-recovery communication";
347 return INSTALL_CORRUPT;
348 }
349
350 // The updater-recovery communication protocol.
351 //
352 // progress <frac> <secs>
353 // fill up the next <frac> part of of the progress bar over <secs> seconds. If <secs> is
354 // zero, use `set_progress` commands to manually control the progress of this segment of the
355 // bar.
356 //
357 // set_progress <frac>
358 // <frac> should be between 0.0 and 1.0; sets the progress bar within the segment defined by
359 // the most recent progress command.
360 //
361 // ui_print <string>
362 // display <string> on the screen.
363 //
364 // wipe_cache
365 // a wipe of cache will be performed following a successful installation.
366 //
367 // clear_display
368 // turn off the text display.
369 //
370 // enable_reboot
371 // packages can explicitly request that they want the user to be able to reboot during
372 // installation (useful for debugging packages that don't exit).
373 //
374 // retry_update
375 // updater encounters some issue during the update. It requests a reboot to retry the same
376 // package automatically.
377 //
378 // log <string>
379 // updater requests logging the string (e.g. cause of the failure).
380 //
381
Tao Bao20c581e2016-12-28 20:55:51 -0800382 std::vector<std::string> args;
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700383 if (int update_status =
Tao Bao6fcd2082019-01-16 09:29:17 -0800384 is_ab ? SetUpAbUpdateCommands(package, zip, pipe_write.get(), &args)
385 : SetUpNonAbUpdateCommands(package, zip, retry_count, pipe_write.get(), &args);
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700386 update_status != 0) {
Tianjie Xu3fec8c62017-08-23 00:18:07 -0700387 log_buffer->push_back(android::base::StringPrintf("error: %d", kUpdateBinaryCommandFailure));
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700388 return update_status;
Tao Bao20c581e2016-12-28 20:55:51 -0800389 }
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700390
Tao Bao20c581e2016-12-28 20:55:51 -0800391 pid_t pid = fork();
Tao Bao20c581e2016-12-28 20:55:51 -0800392 if (pid == -1) {
Tao Bao20c581e2016-12-28 20:55:51 -0800393 PLOG(ERROR) << "Failed to fork update binary";
Tianjie Xu3fec8c62017-08-23 00:18:07 -0700394 log_buffer->push_back(android::base::StringPrintf("error: %d", kForkUpdateBinaryFailure));
Tao Bao20c581e2016-12-28 20:55:51 -0800395 return INSTALL_ERROR;
396 }
397
398 if (pid == 0) {
399 umask(022);
Tao Bao6fcd2082019-01-16 09:29:17 -0800400 pipe_read.reset();
401
402 // Convert the std::string vector to a NULL-terminated char* vector suitable for execv.
403 auto chr_args = StringVectorToNullTerminatedArray(args);
Tao Bao3d69f0d2018-12-20 09:44:06 -0800404 execv(chr_args[0], chr_args.data());
Tao Bao6fcd2082019-01-16 09:29:17 -0800405 // We shouldn't use LOG/PLOG in the forked process, since they may cause the child process to
406 // hang. This deadlock results from an improperly copied mutex in the ui functions.
407 // (Bug: 34769056)
Tianjie Xuab1abae2017-01-30 16:48:52 -0800408 fprintf(stdout, "E:Can't run %s (%s)\n", chr_args[0], strerror(errno));
Tao Bao3da88012017-02-03 13:09:23 -0800409 _exit(EXIT_FAILURE);
Tao Bao20c581e2016-12-28 20:55:51 -0800410 }
Tao Bao6fcd2082019-01-16 09:29:17 -0800411 pipe_write.reset();
Tao Bao20c581e2016-12-28 20:55:51 -0800412
Tianjie Xu37957102017-06-07 17:59:55 -0700413 std::atomic<bool> logger_finished(false);
414 std::thread temperature_logger(log_max_temperature, max_temperature, std::ref(logger_finished));
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700415
Tao Bao20c581e2016-12-28 20:55:51 -0800416 *wipe_cache = false;
417 bool retry_update = false;
418
419 char buffer[1024];
Tao Bao6fcd2082019-01-16 09:29:17 -0800420 FILE* from_child = android::base::Fdopen(std::move(pipe_read), "r");
Tao Bao20c581e2016-12-28 20:55:51 -0800421 while (fgets(buffer, sizeof(buffer), from_child) != nullptr) {
422 std::string line(buffer);
423 size_t space = line.find_first_of(" \n");
424 std::string command(line.substr(0, space));
425 if (command.empty()) continue;
426
427 // Get rid of the leading and trailing space and/or newline.
428 std::string args = space == std::string::npos ? "" : android::base::Trim(line.substr(space));
429
430 if (command == "progress") {
431 std::vector<std::string> tokens = android::base::Split(args, " ");
432 double fraction;
433 int seconds;
434 if (tokens.size() == 2 && android::base::ParseDouble(tokens[0].c_str(), &fraction) &&
435 android::base::ParseInt(tokens[1], &seconds)) {
436 ui->ShowProgress(fraction * (1 - VERIFICATION_PROGRESS_FRACTION), seconds);
437 } else {
438 LOG(ERROR) << "invalid \"progress\" parameters: " << line;
439 }
440 } else if (command == "set_progress") {
441 std::vector<std::string> tokens = android::base::Split(args, " ");
442 double fraction;
443 if (tokens.size() == 1 && android::base::ParseDouble(tokens[0].c_str(), &fraction)) {
444 ui->SetProgress(fraction);
445 } else {
446 LOG(ERROR) << "invalid \"set_progress\" parameters: " << line;
447 }
448 } else if (command == "ui_print") {
Tao Baof0136422017-01-21 13:03:25 -0800449 ui->PrintOnScreenOnly("%s\n", args.c_str());
Tao Bao20c581e2016-12-28 20:55:51 -0800450 fflush(stdout);
451 } else if (command == "wipe_cache") {
452 *wipe_cache = true;
453 } else if (command == "clear_display") {
454 ui->SetBackground(RecoveryUI::NONE);
455 } else if (command == "enable_reboot") {
456 // packages can explicitly request that they want the user
457 // to be able to reboot during installation (useful for
458 // debugging packages that don't exit).
459 ui->SetEnableReboot(true);
460 } else if (command == "retry_update") {
461 retry_update = true;
462 } else if (command == "log") {
463 if (!args.empty()) {
464 // Save the logging request from updater and write to last_install later.
Tao Bao29ee69b2017-05-01 12:23:17 -0700465 log_buffer->push_back(args);
Tao Bao20c581e2016-12-28 20:55:51 -0800466 } else {
467 LOG(ERROR) << "invalid \"log\" parameters: " << line;
468 }
469 } else {
470 LOG(ERROR) << "unknown command [" << command << "]";
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700471 }
Tao Bao20c581e2016-12-28 20:55:51 -0800472 }
473 fclose(from_child);
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700474
Tao Bao20c581e2016-12-28 20:55:51 -0800475 int status;
476 waitpid(pid, &status, 0);
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700477
Tianjie Xu37957102017-06-07 17:59:55 -0700478 logger_finished.store(true);
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700479 finish_log_temperature.notify_one();
480 temperature_logger.join();
481
Tao Bao20c581e2016-12-28 20:55:51 -0800482 if (retry_update) {
483 return INSTALL_RETRY;
484 }
Tao Baoe7b775c2018-11-07 15:13:30 -0800485 if (WIFEXITED(status)) {
486 if (WEXITSTATUS(status) != EXIT_SUCCESS) {
487 LOG(ERROR) << "Error in " << package << " (status " << WEXITSTATUS(status) << ")";
488 return INSTALL_ERROR;
489 }
490 } else if (WIFSIGNALED(status)) {
491 LOG(ERROR) << "Error in " << package << " (killed by signal " << WTERMSIG(status) << ")";
Tao Bao20c581e2016-12-28 20:55:51 -0800492 return INSTALL_ERROR;
Tao Baoe7b775c2018-11-07 15:13:30 -0800493 } else {
494 LOG(FATAL) << "Invalid status code " << status;
Tao Bao20c581e2016-12-28 20:55:51 -0800495 }
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700496
Tao Bao20c581e2016-12-28 20:55:51 -0800497 return INSTALL_SUCCESS;
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700498}
499
Tao Bao1d866052017-04-10 16:55:57 -0700500// Verifes the compatibility info in a Treble-compatible package. Returns true directly if the
501// entry doesn't exist. Note that the compatibility info is packed in a zip file inside the OTA
502// package.
503bool verify_package_compatibility(ZipArchiveHandle package_zip) {
504 LOG(INFO) << "Verifying package compatibility...";
505
506 static constexpr const char* COMPATIBILITY_ZIP_ENTRY = "compatibility.zip";
507 ZipString compatibility_entry_name(COMPATIBILITY_ZIP_ENTRY);
508 ZipEntry compatibility_entry;
509 if (FindEntry(package_zip, compatibility_entry_name, &compatibility_entry) != 0) {
510 LOG(INFO) << "Package doesn't contain " << COMPATIBILITY_ZIP_ENTRY << " entry";
511 return true;
512 }
513
514 std::string zip_content(compatibility_entry.uncompressed_length, '\0');
515 int32_t ret;
516 if ((ret = ExtractToMemory(package_zip, &compatibility_entry,
517 reinterpret_cast<uint8_t*>(&zip_content[0]),
518 compatibility_entry.uncompressed_length)) != 0) {
519 LOG(ERROR) << "Failed to read " << COMPATIBILITY_ZIP_ENTRY << ": " << ErrorCodeString(ret);
520 return false;
521 }
522
523 ZipArchiveHandle zip_handle;
524 ret = OpenArchiveFromMemory(static_cast<void*>(const_cast<char*>(zip_content.data())),
525 zip_content.size(), COMPATIBILITY_ZIP_ENTRY, &zip_handle);
526 if (ret != 0) {
527 LOG(ERROR) << "Failed to OpenArchiveFromMemory: " << ErrorCodeString(ret);
528 return false;
529 }
530
531 // Iterate all the entries inside COMPATIBILITY_ZIP_ENTRY and read the contents.
532 void* cookie;
533 ret = StartIteration(zip_handle, &cookie, nullptr, nullptr);
534 if (ret != 0) {
535 LOG(ERROR) << "Failed to start iterating zip entries: " << ErrorCodeString(ret);
536 CloseArchive(zip_handle);
537 return false;
538 }
539 std::unique_ptr<void, decltype(&EndIteration)> guard(cookie, EndIteration);
540
541 std::vector<std::string> compatibility_info;
542 ZipEntry info_entry;
543 ZipString info_name;
544 while (Next(cookie, &info_entry, &info_name) == 0) {
545 std::string content(info_entry.uncompressed_length, '\0');
546 int32_t ret = ExtractToMemory(zip_handle, &info_entry, reinterpret_cast<uint8_t*>(&content[0]),
547 info_entry.uncompressed_length);
548 if (ret != 0) {
549 LOG(ERROR) << "Failed to read " << info_name.name << ": " << ErrorCodeString(ret);
550 CloseArchive(zip_handle);
551 return false;
552 }
553 compatibility_info.emplace_back(std::move(content));
554 }
Tao Bao1d866052017-04-10 16:55:57 -0700555 CloseArchive(zip_handle);
556
Tao Bao919d2c92017-04-10 16:55:57 -0700557 // VintfObjectRecovery::CheckCompatibility returns zero on success.
558 std::string err;
559 int result = android::vintf::VintfObjectRecovery::CheckCompatibility(compatibility_info, &err);
560 if (result == 0) {
561 return true;
562 }
563
564 LOG(ERROR) << "Failed to verify package compatibility (result " << result << "): " << err;
565 return false;
Tao Bao1d866052017-04-10 16:55:57 -0700566}
567
Tao Bao29ee69b2017-05-01 12:23:17 -0700568static int really_install_package(const std::string& path, bool* wipe_cache, bool needs_mount,
569 std::vector<std::string>* log_buffer, int retry_count,
570 int* max_temperature) {
571 ui->SetBackground(RecoveryUI::INSTALLING_UPDATE);
572 ui->Print("Finding update package...\n");
573 // Give verification half the progress bar...
574 ui->SetProgressType(RecoveryUI::DETERMINATE);
575 ui->ShowProgress(VERIFICATION_PROGRESS_FRACTION, VERIFICATION_PROGRESS_TIME);
576 LOG(INFO) << "Update location: " << path;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800577
Tao Bao29ee69b2017-05-01 12:23:17 -0700578 // Map the update package into memory.
579 ui->Print("Opening update package...\n");
Doug Zongker99916f02014-01-13 14:16:58 -0800580
Tao Bao29ee69b2017-05-01 12:23:17 -0700581 if (needs_mount) {
582 if (path[0] == '@') {
Yifan Hongd81b8e32018-12-17 14:29:06 -0800583 ensure_path_mounted(path.substr(1));
Tao Bao29ee69b2017-05-01 12:23:17 -0700584 } else {
Yifan Hongd81b8e32018-12-17 14:29:06 -0800585 ensure_path_mounted(path);
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800586 }
Tao Bao29ee69b2017-05-01 12:23:17 -0700587 }
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800588
xunchangf07ed2e2019-02-25 14:14:01 -0800589 auto package = Package::CreateMemoryPackage(
590 path, std::bind(&RecoveryUI::SetProgress, ui, std::placeholders::_1));
591 if (!package) {
Tianjie Xu3fec8c62017-08-23 00:18:07 -0700592 log_buffer->push_back(android::base::StringPrintf("error: %d", kMapFileFailure));
Tao Bao29ee69b2017-05-01 12:23:17 -0700593 return INSTALL_CORRUPT;
594 }
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800595
Tao Bao29ee69b2017-05-01 12:23:17 -0700596 // Verify package.
xunchangf07ed2e2019-02-25 14:14:01 -0800597 if (!verify_package(package.get())) {
Tao Bao29ee69b2017-05-01 12:23:17 -0700598 log_buffer->push_back(android::base::StringPrintf("error: %d", kZipVerificationFailure));
Tao Bao29ee69b2017-05-01 12:23:17 -0700599 return INSTALL_CORRUPT;
600 }
Doug Zongker60151a22009-08-12 18:30:03 -0700601
Tao Bao29ee69b2017-05-01 12:23:17 -0700602 // Try to open the package.
xunchangf07ed2e2019-02-25 14:14:01 -0800603 ZipArchiveHandle zip = package->GetZipArchiveHandle();
604 if (!zip) {
Tao Bao29ee69b2017-05-01 12:23:17 -0700605 log_buffer->push_back(android::base::StringPrintf("error: %d", kZipOpenFailure));
Tao Bao29ee69b2017-05-01 12:23:17 -0700606 return INSTALL_CORRUPT;
607 }
608
Tao Bao032403f2019-03-18 13:22:50 -0700609 // Additionally verify the compatibility of the package if it's a fresh install.
610 if (retry_count == 0 && !verify_package_compatibility(zip)) {
Tao Bao29ee69b2017-05-01 12:23:17 -0700611 log_buffer->push_back(android::base::StringPrintf("error: %d", kPackageCompatibilityFailure));
Tao Bao29ee69b2017-05-01 12:23:17 -0700612 return INSTALL_CORRUPT;
613 }
614
615 // Verify and install the contents of the package.
616 ui->Print("Installing update...\n");
617 if (retry_count > 0) {
618 ui->Print("Retry attempt: %d\n", retry_count);
619 }
620 ui->SetEnableReboot(false);
621 int result = try_update_binary(path, zip, wipe_cache, log_buffer, retry_count, max_temperature);
622 ui->SetEnableReboot(true);
623 ui->Print("\n");
624
Tao Bao29ee69b2017-05-01 12:23:17 -0700625 return result;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800626}
Doug Zongker469243e2011-04-12 09:28:10 -0700627
Tao Bao641fa972018-04-25 18:59:40 -0700628int install_package(const std::string& path, bool* wipe_cache, bool needs_mount, int retry_count) {
Tao Bao29ee69b2017-05-01 12:23:17 -0700629 CHECK(!path.empty());
Tao Bao29ee69b2017-05-01 12:23:17 -0700630 CHECK(wipe_cache != nullptr);
631
Tao Baof8119fb2017-04-18 21:35:12 -0700632 modified_flash = true;
633 auto start = std::chrono::system_clock::now();
Tao Bao682c34b2015-04-07 17:16:35 -0700634
Tao Baof8119fb2017-04-18 21:35:12 -0700635 int start_temperature = GetMaxValueFromThermalZone();
636 int max_temperature = start_temperature;
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700637
Tao Baof8119fb2017-04-18 21:35:12 -0700638 int result;
639 std::vector<std::string> log_buffer;
640 if (setup_install_mounts() != 0) {
641 LOG(ERROR) << "failed to set up expected mounts for install; aborting";
642 result = INSTALL_ERROR;
643 } else {
Tao Bao29ee69b2017-05-01 12:23:17 -0700644 result = really_install_package(path, wipe_cache, needs_mount, &log_buffer, retry_count,
Tao Baof8119fb2017-04-18 21:35:12 -0700645 &max_temperature);
646 }
647
648 // Measure the time spent to apply OTA update in seconds.
649 std::chrono::duration<double> duration = std::chrono::system_clock::now() - start;
650 int time_total = static_cast<int>(duration.count());
651
Tao Bao3e18f2b2017-09-29 17:11:13 -0700652 bool has_cache = volume_for_mount_point("/cache") != nullptr;
Tao Baof8119fb2017-04-18 21:35:12 -0700653 // Skip logging the uncrypt_status on devices without /cache.
654 if (has_cache) {
655 static constexpr const char* UNCRYPT_STATUS = "/cache/recovery/uncrypt_status";
656 if (ensure_path_mounted(UNCRYPT_STATUS) != 0) {
657 LOG(WARNING) << "Can't mount " << UNCRYPT_STATUS;
Doug Zongker239ac6a2013-08-20 16:03:25 -0700658 } else {
Tao Baof8119fb2017-04-18 21:35:12 -0700659 std::string uncrypt_status;
660 if (!android::base::ReadFileToString(UNCRYPT_STATUS, &uncrypt_status)) {
661 PLOG(WARNING) << "failed to read uncrypt status";
662 } else if (!android::base::StartsWith(uncrypt_status, "uncrypt_")) {
663 LOG(WARNING) << "corrupted uncrypt_status: " << uncrypt_status;
Tianjie Xua2867782017-03-24 14:13:56 -0700664 } else {
Tao Baof8119fb2017-04-18 21:35:12 -0700665 log_buffer.push_back(android::base::Trim(uncrypt_status));
Tianjie Xua2867782017-03-24 14:13:56 -0700666 }
Doug Zongker469243e2011-04-12 09:28:10 -0700667 }
Tao Baof8119fb2017-04-18 21:35:12 -0700668 }
Tao Baobadaac42016-09-26 11:39:14 -0700669
Tao Baof8119fb2017-04-18 21:35:12 -0700670 // The first two lines need to be the package name and install result.
671 std::vector<std::string> log_header = {
672 path,
673 result == INSTALL_SUCCESS ? "1" : "0",
674 "time_total: " + std::to_string(time_total),
675 "retry: " + std::to_string(retry_count),
676 };
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700677
Tao Baof8119fb2017-04-18 21:35:12 -0700678 int end_temperature = GetMaxValueFromThermalZone();
679 max_temperature = std::max(end_temperature, max_temperature);
680 if (start_temperature > 0) {
681 log_buffer.push_back("temperature_start: " + std::to_string(start_temperature));
682 }
683 if (end_temperature > 0) {
684 log_buffer.push_back("temperature_end: " + std::to_string(end_temperature));
685 }
686 if (max_temperature > 0) {
687 log_buffer.push_back("temperature_max: " + std::to_string(max_temperature));
688 }
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700689
Tao Baof8119fb2017-04-18 21:35:12 -0700690 std::string log_content =
691 android::base::Join(log_header, "\n") + "\n" + android::base::Join(log_buffer, "\n") + "\n";
Tao Bao641fa972018-04-25 18:59:40 -0700692 const std::string& install_file = Paths::Get().temporary_install_file();
Tao Baof8119fb2017-04-18 21:35:12 -0700693 if (!android::base::WriteStringToFile(log_content, install_file)) {
694 PLOG(ERROR) << "failed to write " << install_file;
695 }
Tao Baobadaac42016-09-26 11:39:14 -0700696
Tao Baof8119fb2017-04-18 21:35:12 -0700697 // Write a copy into last_log.
698 LOG(INFO) << log_content;
Tao Baobadaac42016-09-26 11:39:14 -0700699
Tao Baof8119fb2017-04-18 21:35:12 -0700700 return result;
Doug Zongker469243e2011-04-12 09:28:10 -0700701}
Yabin Cui6faf0262016-06-09 14:09:39 -0700702
xunchangf07ed2e2019-02-25 14:14:01 -0800703bool verify_package(Package* package) {
Tianjie Xue1d02fb2018-10-19 15:52:17 -0700704 static constexpr const char* CERTIFICATE_ZIP_FILE = "/system/etc/security/otacerts.zip";
705 std::vector<Certificate> loaded_keys = LoadKeysFromZipfile(CERTIFICATE_ZIP_FILE);
706 if (loaded_keys.empty()) {
Tao Bao5e535012017-03-16 17:37:38 -0700707 LOG(ERROR) << "Failed to load keys";
708 return false;
709 }
Tianjie Xue1d02fb2018-10-19 15:52:17 -0700710 LOG(INFO) << loaded_keys.size() << " key(s) loaded from " << CERTIFICATE_ZIP_FILE;
Yabin Cui6faf0262016-06-09 14:09:39 -0700711
Tao Bao5e535012017-03-16 17:37:38 -0700712 // Verify package.
713 ui->Print("Verifying update package...\n");
714 auto t0 = std::chrono::system_clock::now();
xunchangf07ed2e2019-02-25 14:14:01 -0800715 int err = verify_file(package, loaded_keys);
Tao Bao5e535012017-03-16 17:37:38 -0700716 std::chrono::duration<double> duration = std::chrono::system_clock::now() - t0;
717 ui->Print("Update package verification took %.1f s (result %d).\n", duration.count(), err);
718 if (err != VERIFY_SUCCESS) {
719 LOG(ERROR) << "Signature verification failed";
720 LOG(ERROR) << "error: " << kZipVerificationFailure;
721 return false;
722 }
723 return true;
Yabin Cui6faf0262016-06-09 14:09:39 -0700724}