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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"
Tao Bao00d57572017-05-02 15:48:54 -070054#include "private/install.h"
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080055#include "roots.h"
Doug Zongker10e418d2011-10-28 10:33:05 -070056#include "ui.h"
Mattias Nissler452df6d2016-04-04 16:17:01 +020057#include "verifier.h"
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080058
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -070059using namespace std::chrono_literals;
60
Doug Zongker74406302011-10-28 15:13:10 -070061// Default allocation of progress bar segments to operations
Tao Bao20c581e2016-12-28 20:55:51 -080062static constexpr int VERIFICATION_PROGRESS_TIME = 60;
63static constexpr float VERIFICATION_PROGRESS_FRACTION = 0.25;
Doug Zongker74406302011-10-28 15:13:10 -070064
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -070065static std::condition_variable finish_log_temperature;
66
Tianjie Xu93b5bf22018-10-25 10:39:01 -070067bool ReadMetadataFromPackage(ZipArchiveHandle zip, std::map<std::string, std::string>* metadata) {
Tao Bao8a7afcc2017-04-18 22:05:50 -070068 CHECK(metadata != nullptr);
Tianjie Xub0ddae52016-06-08 14:30:04 -070069
Tao Bao8a7afcc2017-04-18 22:05:50 -070070 static constexpr const char* METADATA_PATH = "META-INF/com/android/metadata";
71 ZipString path(METADATA_PATH);
72 ZipEntry entry;
73 if (FindEntry(zip, path, &entry) != 0) {
74 LOG(ERROR) << "Failed to find " << METADATA_PATH;
75 return false;
76 }
77
78 uint32_t length = entry.uncompressed_length;
Tianjie Xu93b5bf22018-10-25 10:39:01 -070079 std::string metadata_string(length, '\0');
80 int32_t err =
81 ExtractToMemory(zip, &entry, reinterpret_cast<uint8_t*>(&metadata_string[0]), length);
Tao Bao8a7afcc2017-04-18 22:05:50 -070082 if (err != 0) {
83 LOG(ERROR) << "Failed to extract " << METADATA_PATH << ": " << ErrorCodeString(err);
84 return false;
85 }
Tianjie Xu93b5bf22018-10-25 10:39:01 -070086
87 for (const std::string& line : android::base::Split(metadata_string, "\n")) {
88 size_t eq = line.find('=');
89 if (eq != std::string::npos) {
90 metadata->emplace(android::base::Trim(line.substr(0, eq)),
91 android::base::Trim(line.substr(eq + 1)));
92 }
93 }
94
Tao Bao8a7afcc2017-04-18 22:05:50 -070095 return true;
Yabin Cui6faf0262016-06-09 14:09:39 -070096}
97
Tianjie Xu93b5bf22018-10-25 10:39:01 -070098// Gets the value for the given key in |metadata|. Returns an emtpy string if the key isn't
99// present.
100static std::string get_value(const std::map<std::string, std::string>& metadata,
101 const std::string& key) {
102 const auto& it = metadata.find(key);
103 return (it == metadata.end()) ? "" : it->second;
104}
105
106static std::string OtaTypeToString(OtaType type) {
107 switch (type) {
108 case OtaType::AB:
109 return "AB";
110 case OtaType::BLOCK:
111 return "BLOCK";
112 case OtaType::BRICK:
113 return "BRICK";
Tao Bao8a7afcc2017-04-18 22:05:50 -0700114 }
Tianjie Xub0ddae52016-06-08 14:30:04 -0700115}
116
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700117// Read the build.version.incremental of src/tgt from the metadata and log it to last_install.
118static void ReadSourceTargetBuild(const std::map<std::string, std::string>& metadata,
119 std::vector<std::string>* log_buffer) {
120 // Examples of the pre-build and post-build strings in metadata:
121 // pre-build-incremental=2943039
122 // post-build-incremental=2951741
123 auto source_build = get_value(metadata, "pre-build-incremental");
124 if (!source_build.empty()) {
125 log_buffer->push_back("source_build: " + source_build);
126 }
127
128 auto target_build = get_value(metadata, "post-build-incremental");
129 if (!target_build.empty()) {
130 log_buffer->push_back("target_build: " + target_build);
131 }
132}
133
134// Checks the build version, fingerprint and timestamp in the metadata of the A/B package.
135// Downgrading is not allowed unless explicitly enabled in the package and only for
Tao Baocf60a442018-06-18 14:56:20 -0700136// incremental packages.
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700137static int CheckAbSpecificMetadata(const std::map<std::string, std::string>& metadata) {
Tao Baoefc35592017-01-08 22:45:47 -0800138 // Incremental updates should match the current build.
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700139 auto device_pre_build = android::base::GetProperty("ro.build.version.incremental", "");
140 auto pkg_pre_build = get_value(metadata, "pre-build-incremental");
141 if (!pkg_pre_build.empty() && pkg_pre_build != device_pre_build) {
142 LOG(ERROR) << "Package is for source build " << pkg_pre_build << " but expected "
143 << device_pre_build;
Tao Baoefc35592017-01-08 22:45:47 -0800144 return INSTALL_ERROR;
145 }
Alex Deymo4344d632016-08-03 21:03:53 -0700146
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700147 auto device_fingerprint = android::base::GetProperty("ro.build.fingerprint", "");
148 auto pkg_pre_build_fingerprint = get_value(metadata, "pre-build");
149 if (!pkg_pre_build_fingerprint.empty() && pkg_pre_build_fingerprint != device_fingerprint) {
Tao Baoefc35592017-01-08 22:45:47 -0800150 LOG(ERROR) << "Package is for source build " << pkg_pre_build_fingerprint << " but expected "
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700151 << device_fingerprint;
Tao Baoefc35592017-01-08 22:45:47 -0800152 return INSTALL_ERROR;
153 }
Alex Deymo4344d632016-08-03 21:03:53 -0700154
Tao Baoefc35592017-01-08 22:45:47 -0800155 // Check for downgrade version.
156 int64_t build_timestamp =
157 android::base::GetIntProperty("ro.build.date.utc", std::numeric_limits<int64_t>::max());
158 int64_t pkg_post_timestamp = 0;
159 // We allow to full update to the same version we are running, in case there
160 // is a problem with the current copy of that version.
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700161 auto pkg_post_timestamp_string = get_value(metadata, "post-timestamp");
162 if (pkg_post_timestamp_string.empty() ||
163 !android::base::ParseInt(pkg_post_timestamp_string, &pkg_post_timestamp) ||
Tao Baoefc35592017-01-08 22:45:47 -0800164 pkg_post_timestamp < build_timestamp) {
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700165 if (get_value(metadata, "ota-downgrade") != "yes") {
Tao Baoefc35592017-01-08 22:45:47 -0800166 LOG(ERROR) << "Update package is older than the current build, expected a build "
167 "newer than timestamp "
168 << build_timestamp << " but package has timestamp " << pkg_post_timestamp
169 << " and downgrade not allowed.";
170 return INSTALL_ERROR;
171 }
172 if (pkg_pre_build_fingerprint.empty()) {
173 LOG(ERROR) << "Downgrade package must have a pre-build version set, not allowed.";
174 return INSTALL_ERROR;
175 }
176 }
177
178 return 0;
Alex Deymo4344d632016-08-03 21:03:53 -0700179}
180
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700181int CheckPackageMetadata(const std::map<std::string, std::string>& metadata, OtaType ota_type) {
182 auto package_ota_type = get_value(metadata, "ota-type");
183 auto expected_ota_type = OtaTypeToString(ota_type);
184 if (ota_type != OtaType::AB && ota_type != OtaType::BRICK) {
185 LOG(INFO) << "Skip package metadata check for ota type " << expected_ota_type;
186 return 0;
187 }
188
189 if (package_ota_type != expected_ota_type) {
190 LOG(ERROR) << "Unexpected ota package type, expects " << expected_ota_type << ", actual "
191 << package_ota_type;
192 return INSTALL_ERROR;
193 }
194
195 auto device = android::base::GetProperty("ro.product.device", "");
196 auto pkg_device = get_value(metadata, "pre-device");
197 if (pkg_device != device || pkg_device.empty()) {
198 LOG(ERROR) << "Package is for product " << pkg_device << " but expected " << device;
199 return INSTALL_ERROR;
200 }
201
202 // We allow the package to not have any serialno; and we also allow it to carry multiple serial
203 // numbers split by "|"; e.g. serialno=serialno1|serialno2|serialno3 ... We will fail the
204 // verification if the device's serialno doesn't match any of these carried numbers.
205 auto pkg_serial_no = get_value(metadata, "serialno");
206 if (!pkg_serial_no.empty()) {
207 auto device_serial_no = android::base::GetProperty("ro.serialno", "");
208 bool serial_number_match = false;
209 for (const auto& number : android::base::Split(pkg_serial_no, "|")) {
210 if (device_serial_no == android::base::Trim(number)) {
211 serial_number_match = true;
212 }
213 }
214 if (!serial_number_match) {
215 LOG(ERROR) << "Package is for serial " << pkg_serial_no;
216 return INSTALL_ERROR;
217 }
218 }
219
220 if (ota_type == OtaType::AB) {
221 return CheckAbSpecificMetadata(metadata);
222 }
223
224 return 0;
225}
226
Tao Baocf60a442018-06-18 14:56:20 -0700227int SetUpAbUpdateCommands(const std::string& package, ZipArchiveHandle zip, int status_fd,
Tao Bao00d57572017-05-02 15:48:54 -0700228 std::vector<std::string>* cmd) {
Tao Baobc4b1fe2017-04-17 16:46:05 -0700229 CHECK(cmd != nullptr);
Alex Deymo4344d632016-08-03 21:03:53 -0700230
Tao Baobc4b1fe2017-04-17 16:46:05 -0700231 // For A/B updates we extract the payload properties to a buffer and obtain the RAW payload offset
232 // in the zip file.
233 static constexpr const char* AB_OTA_PAYLOAD_PROPERTIES = "payload_properties.txt";
234 ZipString property_name(AB_OTA_PAYLOAD_PROPERTIES);
235 ZipEntry properties_entry;
236 if (FindEntry(zip, property_name, &properties_entry) != 0) {
237 LOG(ERROR) << "Failed to find " << AB_OTA_PAYLOAD_PROPERTIES;
238 return INSTALL_CORRUPT;
239 }
240 uint32_t properties_entry_length = properties_entry.uncompressed_length;
241 std::vector<uint8_t> payload_properties(properties_entry_length);
242 int32_t err =
243 ExtractToMemory(zip, &properties_entry, payload_properties.data(), properties_entry_length);
244 if (err != 0) {
245 LOG(ERROR) << "Failed to extract " << AB_OTA_PAYLOAD_PROPERTIES << ": " << ErrorCodeString(err);
246 return INSTALL_CORRUPT;
247 }
Alex Deymo4344d632016-08-03 21:03:53 -0700248
Tao Baobc4b1fe2017-04-17 16:46:05 -0700249 static constexpr const char* AB_OTA_PAYLOAD = "payload.bin";
250 ZipString payload_name(AB_OTA_PAYLOAD);
251 ZipEntry payload_entry;
252 if (FindEntry(zip, payload_name, &payload_entry) != 0) {
253 LOG(ERROR) << "Failed to find " << AB_OTA_PAYLOAD;
254 return INSTALL_CORRUPT;
255 }
256 long payload_offset = payload_entry.offset;
257 *cmd = {
Tao Bao2cc9bbb2018-08-14 12:34:46 -0700258 "/system/bin/update_engine_sideload",
Tao Bao00d57572017-05-02 15:48:54 -0700259 "--payload=file://" + package,
Tao Baobc4b1fe2017-04-17 16:46:05 -0700260 android::base::StringPrintf("--offset=%ld", payload_offset),
261 "--headers=" + std::string(payload_properties.begin(), payload_properties.end()),
262 android::base::StringPrintf("--status_fd=%d", status_fd),
263 };
264 return 0;
Alex Deymo4344d632016-08-03 21:03:53 -0700265}
266
Tao Baocf60a442018-06-18 14:56:20 -0700267int SetUpNonAbUpdateCommands(const std::string& package, ZipArchiveHandle zip, int retry_count,
268 int status_fd, std::vector<std::string>* cmd) {
Tao Baobc4b1fe2017-04-17 16:46:05 -0700269 CHECK(cmd != nullptr);
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700270
Tao Baocf60a442018-06-18 14:56:20 -0700271 // In non-A/B updates we extract the update binary from the package.
Tao Baobc4b1fe2017-04-17 16:46:05 -0700272 static constexpr const char* UPDATE_BINARY_NAME = "META-INF/com/google/android/update-binary";
273 ZipString binary_name(UPDATE_BINARY_NAME);
274 ZipEntry binary_entry;
275 if (FindEntry(zip, binary_name, &binary_entry) != 0) {
276 LOG(ERROR) << "Failed to find update binary " << UPDATE_BINARY_NAME;
277 return INSTALL_CORRUPT;
278 }
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700279
Tao Baocf60a442018-06-18 14:56:20 -0700280 const std::string binary_path = Paths::Get().temporary_update_binary();
Tao Bao00d57572017-05-02 15:48:54 -0700281 unlink(binary_path.c_str());
Tao Baocf60a442018-06-18 14:56:20 -0700282 android::base::unique_fd fd(
283 open(binary_path.c_str(), O_CREAT | O_WRONLY | O_TRUNC | O_CLOEXEC, 0755));
Tao Baobc4b1fe2017-04-17 16:46:05 -0700284 if (fd == -1) {
Tao Bao00d57572017-05-02 15:48:54 -0700285 PLOG(ERROR) << "Failed to create " << binary_path;
Tao Baobc4b1fe2017-04-17 16:46:05 -0700286 return INSTALL_ERROR;
287 }
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700288
Tao Baobc4b1fe2017-04-17 16:46:05 -0700289 int32_t error = ExtractEntryToFile(zip, &binary_entry, fd);
Tao Baobc4b1fe2017-04-17 16:46:05 -0700290 if (error != 0) {
291 LOG(ERROR) << "Failed to extract " << UPDATE_BINARY_NAME << ": " << ErrorCodeString(error);
292 return INSTALL_ERROR;
293 }
294
295 *cmd = {
Tao Bao00d57572017-05-02 15:48:54 -0700296 binary_path,
Tao Baobd0ddcd2017-05-04 13:03:18 -0700297 std::to_string(kRecoveryApiVersion),
Tao Baobc4b1fe2017-04-17 16:46:05 -0700298 std::to_string(status_fd),
Tao Bao00d57572017-05-02 15:48:54 -0700299 package,
Tao Baobc4b1fe2017-04-17 16:46:05 -0700300 };
301 if (retry_count > 0) {
302 cmd->push_back("retry");
303 }
304 return 0;
Alex Deymo4344d632016-08-03 21:03:53 -0700305}
Alex Deymo4344d632016-08-03 21:03:53 -0700306
Tianjie Xu37957102017-06-07 17:59:55 -0700307static void log_max_temperature(int* max_temperature, const std::atomic<bool>& logger_finished) {
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700308 CHECK(max_temperature != nullptr);
309 std::mutex mtx;
310 std::unique_lock<std::mutex> lck(mtx);
Tianjie Xu37957102017-06-07 17:59:55 -0700311 while (!logger_finished.load() &&
312 finish_log_temperature.wait_for(lck, 20s) == std::cv_status::timeout) {
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700313 *max_temperature = std::max(*max_temperature, GetMaxValueFromThermalZone());
314 }
315}
316
Alex Deymo4344d632016-08-03 21:03:53 -0700317// If the package contains an update binary, extract it and run it.
Tao Bao00d57572017-05-02 15:48:54 -0700318static int try_update_binary(const std::string& package, ZipArchiveHandle zip, bool* wipe_cache,
Tao Bao29ee69b2017-05-01 12:23:17 -0700319 std::vector<std::string>* log_buffer, int retry_count,
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700320 int* max_temperature) {
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700321 std::map<std::string, std::string> metadata;
322 if (!ReadMetadataFromPackage(zip, &metadata)) {
323 LOG(ERROR) << "Failed to parse metadata in the zip file";
324 return INSTALL_CORRUPT;
325 }
326
327 bool is_ab = android::base::GetBoolProperty("ro.build.ab_update", false);
328 // Verifies against the metadata in the package first.
329 if (int check_status = is_ab ? CheckPackageMetadata(metadata, OtaType::AB) : 0;
330 check_status != 0) {
331 log_buffer->push_back(android::base::StringPrintf("error: %d", kUpdateBinaryCommandFailure));
332 return check_status;
333 }
334
335 ReadSourceTargetBuild(metadata, log_buffer);
Alex Deymo4344d632016-08-03 21:03:53 -0700336
Tao Bao20c581e2016-12-28 20:55:51 -0800337 int pipefd[2];
338 pipe(pipefd);
Tao Bao20c581e2016-12-28 20:55:51 -0800339 std::vector<std::string> args;
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700340 if (int update_status =
341 is_ab ? SetUpAbUpdateCommands(package, zip, pipefd[1], &args)
342 : SetUpNonAbUpdateCommands(package, zip, retry_count, pipefd[1], &args);
343 update_status != 0) {
Tao Bao20c581e2016-12-28 20:55:51 -0800344 close(pipefd[0]);
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700345 close(pipefd[1]);
Tianjie Xu3fec8c62017-08-23 00:18:07 -0700346 log_buffer->push_back(android::base::StringPrintf("error: %d", kUpdateBinaryCommandFailure));
Tianjie Xu93b5bf22018-10-25 10:39:01 -0700347 return update_status;
Tao Bao20c581e2016-12-28 20:55:51 -0800348 }
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700349
Tao Bao20c581e2016-12-28 20:55:51 -0800350 // When executing the update binary contained in the package, the
351 // arguments passed are:
352 //
353 // - the version number for this interface
354 //
355 // - an FD to which the program can write in order to update the
356 // progress bar. The program can write single-line commands:
357 //
358 // progress <frac> <secs>
359 // fill up the next <frac> part of of the progress bar
360 // over <secs> seconds. If <secs> is zero, use
361 // set_progress commands to manually control the
362 // progress of this segment of the bar.
363 //
364 // set_progress <frac>
365 // <frac> should be between 0.0 and 1.0; sets the
366 // progress bar within the segment defined by the most
367 // recent progress command.
368 //
369 // ui_print <string>
370 // display <string> on the screen.
371 //
372 // wipe_cache
373 // a wipe of cache will be performed following a successful
374 // installation.
375 //
376 // clear_display
377 // turn off the text display.
378 //
379 // enable_reboot
380 // packages can explicitly request that they want the user
381 // to be able to reboot during installation (useful for
382 // debugging packages that don't exit).
383 //
384 // retry_update
385 // updater encounters some issue during the update. It requests
386 // a reboot to retry the same package automatically.
387 //
388 // log <string>
389 // updater requests logging the string (e.g. cause of the
390 // failure).
391 //
392 // - the name of the package zip file.
393 //
394 // - an optional argument "retry" if this update is a retry of a failed
395 // update attempt.
396 //
Doug Zongkerd0181b82011-10-19 10:51:12 -0700397
Tao Bao20c581e2016-12-28 20:55:51 -0800398 // Convert the vector to a NULL-terminated char* array suitable for execv.
399 const char* chr_args[args.size() + 1];
400 chr_args[args.size()] = nullptr;
401 for (size_t i = 0; i < args.size(); i++) {
402 chr_args[i] = args[i].c_str();
403 }
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700404
Tao Bao20c581e2016-12-28 20:55:51 -0800405 pid_t pid = fork();
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700406
Tao Bao20c581e2016-12-28 20:55:51 -0800407 if (pid == -1) {
408 close(pipefd[0]);
409 close(pipefd[1]);
410 PLOG(ERROR) << "Failed to fork update binary";
Tianjie Xu3fec8c62017-08-23 00:18:07 -0700411 log_buffer->push_back(android::base::StringPrintf("error: %d", kForkUpdateBinaryFailure));
Tao Bao20c581e2016-12-28 20:55:51 -0800412 return INSTALL_ERROR;
413 }
414
415 if (pid == 0) {
416 umask(022);
417 close(pipefd[0]);
418 execv(chr_args[0], const_cast<char**>(chr_args));
Tianjie Xuab1abae2017-01-30 16:48:52 -0800419 // Bug: 34769056
420 // We shouldn't use LOG/PLOG in the forked process, since they may cause
421 // the child process to hang. This deadlock results from an improperly
422 // copied mutex in the ui functions.
423 fprintf(stdout, "E:Can't run %s (%s)\n", chr_args[0], strerror(errno));
Tao Bao3da88012017-02-03 13:09:23 -0800424 _exit(EXIT_FAILURE);
Tao Bao20c581e2016-12-28 20:55:51 -0800425 }
426 close(pipefd[1]);
427
Tianjie Xu37957102017-06-07 17:59:55 -0700428 std::atomic<bool> logger_finished(false);
429 std::thread temperature_logger(log_max_temperature, max_temperature, std::ref(logger_finished));
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700430
Tao Bao20c581e2016-12-28 20:55:51 -0800431 *wipe_cache = false;
432 bool retry_update = false;
433
434 char buffer[1024];
435 FILE* from_child = fdopen(pipefd[0], "r");
436 while (fgets(buffer, sizeof(buffer), from_child) != nullptr) {
437 std::string line(buffer);
438 size_t space = line.find_first_of(" \n");
439 std::string command(line.substr(0, space));
440 if (command.empty()) continue;
441
442 // Get rid of the leading and trailing space and/or newline.
443 std::string args = space == std::string::npos ? "" : android::base::Trim(line.substr(space));
444
445 if (command == "progress") {
446 std::vector<std::string> tokens = android::base::Split(args, " ");
447 double fraction;
448 int seconds;
449 if (tokens.size() == 2 && android::base::ParseDouble(tokens[0].c_str(), &fraction) &&
450 android::base::ParseInt(tokens[1], &seconds)) {
451 ui->ShowProgress(fraction * (1 - VERIFICATION_PROGRESS_FRACTION), seconds);
452 } else {
453 LOG(ERROR) << "invalid \"progress\" parameters: " << line;
454 }
455 } else if (command == "set_progress") {
456 std::vector<std::string> tokens = android::base::Split(args, " ");
457 double fraction;
458 if (tokens.size() == 1 && android::base::ParseDouble(tokens[0].c_str(), &fraction)) {
459 ui->SetProgress(fraction);
460 } else {
461 LOG(ERROR) << "invalid \"set_progress\" parameters: " << line;
462 }
463 } else if (command == "ui_print") {
Tao Baof0136422017-01-21 13:03:25 -0800464 ui->PrintOnScreenOnly("%s\n", args.c_str());
Tao Bao20c581e2016-12-28 20:55:51 -0800465 fflush(stdout);
466 } else if (command == "wipe_cache") {
467 *wipe_cache = true;
468 } else if (command == "clear_display") {
469 ui->SetBackground(RecoveryUI::NONE);
470 } else if (command == "enable_reboot") {
471 // packages can explicitly request that they want the user
472 // to be able to reboot during installation (useful for
473 // debugging packages that don't exit).
474 ui->SetEnableReboot(true);
475 } else if (command == "retry_update") {
476 retry_update = true;
477 } else if (command == "log") {
478 if (!args.empty()) {
479 // Save the logging request from updater and write to last_install later.
Tao Bao29ee69b2017-05-01 12:23:17 -0700480 log_buffer->push_back(args);
Tao Bao20c581e2016-12-28 20:55:51 -0800481 } else {
482 LOG(ERROR) << "invalid \"log\" parameters: " << line;
483 }
484 } else {
485 LOG(ERROR) << "unknown command [" << command << "]";
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700486 }
Tao Bao20c581e2016-12-28 20:55:51 -0800487 }
488 fclose(from_child);
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700489
Tao Bao20c581e2016-12-28 20:55:51 -0800490 int status;
491 waitpid(pid, &status, 0);
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700492
Tianjie Xu37957102017-06-07 17:59:55 -0700493 logger_finished.store(true);
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700494 finish_log_temperature.notify_one();
495 temperature_logger.join();
496
Tao Bao20c581e2016-12-28 20:55:51 -0800497 if (retry_update) {
498 return INSTALL_RETRY;
499 }
500 if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
Tao Bao00d57572017-05-02 15:48:54 -0700501 LOG(ERROR) << "Error in " << package << " (Status " << WEXITSTATUS(status) << ")";
Tao Bao20c581e2016-12-28 20:55:51 -0800502 return INSTALL_ERROR;
503 }
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700504
Tao Bao20c581e2016-12-28 20:55:51 -0800505 return INSTALL_SUCCESS;
Doug Zongkerb2ee9202009-06-04 10:24:53 -0700506}
507
Tao Bao1d866052017-04-10 16:55:57 -0700508// Verifes the compatibility info in a Treble-compatible package. Returns true directly if the
509// entry doesn't exist. Note that the compatibility info is packed in a zip file inside the OTA
510// package.
511bool verify_package_compatibility(ZipArchiveHandle package_zip) {
512 LOG(INFO) << "Verifying package compatibility...";
513
514 static constexpr const char* COMPATIBILITY_ZIP_ENTRY = "compatibility.zip";
515 ZipString compatibility_entry_name(COMPATIBILITY_ZIP_ENTRY);
516 ZipEntry compatibility_entry;
517 if (FindEntry(package_zip, compatibility_entry_name, &compatibility_entry) != 0) {
518 LOG(INFO) << "Package doesn't contain " << COMPATIBILITY_ZIP_ENTRY << " entry";
519 return true;
520 }
521
522 std::string zip_content(compatibility_entry.uncompressed_length, '\0');
523 int32_t ret;
524 if ((ret = ExtractToMemory(package_zip, &compatibility_entry,
525 reinterpret_cast<uint8_t*>(&zip_content[0]),
526 compatibility_entry.uncompressed_length)) != 0) {
527 LOG(ERROR) << "Failed to read " << COMPATIBILITY_ZIP_ENTRY << ": " << ErrorCodeString(ret);
528 return false;
529 }
530
531 ZipArchiveHandle zip_handle;
532 ret = OpenArchiveFromMemory(static_cast<void*>(const_cast<char*>(zip_content.data())),
533 zip_content.size(), COMPATIBILITY_ZIP_ENTRY, &zip_handle);
534 if (ret != 0) {
535 LOG(ERROR) << "Failed to OpenArchiveFromMemory: " << ErrorCodeString(ret);
536 return false;
537 }
538
539 // Iterate all the entries inside COMPATIBILITY_ZIP_ENTRY and read the contents.
540 void* cookie;
541 ret = StartIteration(zip_handle, &cookie, nullptr, nullptr);
542 if (ret != 0) {
543 LOG(ERROR) << "Failed to start iterating zip entries: " << ErrorCodeString(ret);
544 CloseArchive(zip_handle);
545 return false;
546 }
547 std::unique_ptr<void, decltype(&EndIteration)> guard(cookie, EndIteration);
548
549 std::vector<std::string> compatibility_info;
550 ZipEntry info_entry;
551 ZipString info_name;
552 while (Next(cookie, &info_entry, &info_name) == 0) {
553 std::string content(info_entry.uncompressed_length, '\0');
554 int32_t ret = ExtractToMemory(zip_handle, &info_entry, reinterpret_cast<uint8_t*>(&content[0]),
555 info_entry.uncompressed_length);
556 if (ret != 0) {
557 LOG(ERROR) << "Failed to read " << info_name.name << ": " << ErrorCodeString(ret);
558 CloseArchive(zip_handle);
559 return false;
560 }
561 compatibility_info.emplace_back(std::move(content));
562 }
Tao Bao1d866052017-04-10 16:55:57 -0700563 CloseArchive(zip_handle);
564
Tao Bao919d2c92017-04-10 16:55:57 -0700565 // VintfObjectRecovery::CheckCompatibility returns zero on success.
566 std::string err;
567 int result = android::vintf::VintfObjectRecovery::CheckCompatibility(compatibility_info, &err);
568 if (result == 0) {
569 return true;
570 }
571
572 LOG(ERROR) << "Failed to verify package compatibility (result " << result << "): " << err;
573 return false;
Tao Bao1d866052017-04-10 16:55:57 -0700574}
575
Tao Bao29ee69b2017-05-01 12:23:17 -0700576static int really_install_package(const std::string& path, bool* wipe_cache, bool needs_mount,
577 std::vector<std::string>* log_buffer, int retry_count,
578 int* max_temperature) {
579 ui->SetBackground(RecoveryUI::INSTALLING_UPDATE);
580 ui->Print("Finding update package...\n");
581 // Give verification half the progress bar...
582 ui->SetProgressType(RecoveryUI::DETERMINATE);
583 ui->ShowProgress(VERIFICATION_PROGRESS_FRACTION, VERIFICATION_PROGRESS_TIME);
584 LOG(INFO) << "Update location: " << path;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800585
Tao Bao29ee69b2017-05-01 12:23:17 -0700586 // Map the update package into memory.
587 ui->Print("Opening update package...\n");
Doug Zongker99916f02014-01-13 14:16:58 -0800588
Tao Bao29ee69b2017-05-01 12:23:17 -0700589 if (needs_mount) {
590 if (path[0] == '@') {
591 ensure_path_mounted(path.substr(1).c_str());
592 } else {
593 ensure_path_mounted(path.c_str());
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800594 }
Tao Bao29ee69b2017-05-01 12:23:17 -0700595 }
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800596
Tao Bao29ee69b2017-05-01 12:23:17 -0700597 MemMapping map;
Tao Baob656a152017-04-18 23:54:29 -0700598 if (!map.MapFile(path)) {
Tao Bao29ee69b2017-05-01 12:23:17 -0700599 LOG(ERROR) << "failed to map file";
Tianjie Xu3fec8c62017-08-23 00:18:07 -0700600 log_buffer->push_back(android::base::StringPrintf("error: %d", kMapFileFailure));
Tao Bao29ee69b2017-05-01 12:23:17 -0700601 return INSTALL_CORRUPT;
602 }
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800603
Tao Bao29ee69b2017-05-01 12:23:17 -0700604 // Verify package.
605 if (!verify_package(map.addr, map.length)) {
606 log_buffer->push_back(android::base::StringPrintf("error: %d", kZipVerificationFailure));
Tao Bao29ee69b2017-05-01 12:23:17 -0700607 return INSTALL_CORRUPT;
608 }
Doug Zongker60151a22009-08-12 18:30:03 -0700609
Tao Bao29ee69b2017-05-01 12:23:17 -0700610 // Try to open the package.
611 ZipArchiveHandle zip;
612 int err = OpenArchiveFromMemory(map.addr, map.length, path.c_str(), &zip);
613 if (err != 0) {
614 LOG(ERROR) << "Can't open " << path << " : " << ErrorCodeString(err);
615 log_buffer->push_back(android::base::StringPrintf("error: %d", kZipOpenFailure));
Doug Zongker99916f02014-01-13 14:16:58 -0800616
Tianjie Xu8cf5c8f2016-09-08 20:10:11 -0700617 CloseArchive(zip);
Tao Bao29ee69b2017-05-01 12:23:17 -0700618 return INSTALL_CORRUPT;
619 }
620
621 // Additionally verify the compatibility of the package.
622 if (!verify_package_compatibility(zip)) {
623 log_buffer->push_back(android::base::StringPrintf("error: %d", kPackageCompatibilityFailure));
Tao Bao29ee69b2017-05-01 12:23:17 -0700624 CloseArchive(zip);
625 return INSTALL_CORRUPT;
626 }
627
628 // Verify and install the contents of the package.
629 ui->Print("Installing update...\n");
630 if (retry_count > 0) {
631 ui->Print("Retry attempt: %d\n", retry_count);
632 }
633 ui->SetEnableReboot(false);
634 int result = try_update_binary(path, zip, wipe_cache, log_buffer, retry_count, max_temperature);
635 ui->SetEnableReboot(true);
636 ui->Print("\n");
637
Tao Bao29ee69b2017-05-01 12:23:17 -0700638 CloseArchive(zip);
639 return result;
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -0800640}
Doug Zongker469243e2011-04-12 09:28:10 -0700641
Tao Bao641fa972018-04-25 18:59:40 -0700642int install_package(const std::string& path, bool* wipe_cache, bool needs_mount, int retry_count) {
Tao Bao29ee69b2017-05-01 12:23:17 -0700643 CHECK(!path.empty());
Tao Bao29ee69b2017-05-01 12:23:17 -0700644 CHECK(wipe_cache != nullptr);
645
Tao Baof8119fb2017-04-18 21:35:12 -0700646 modified_flash = true;
647 auto start = std::chrono::system_clock::now();
Tao Bao682c34b2015-04-07 17:16:35 -0700648
Tao Baof8119fb2017-04-18 21:35:12 -0700649 int start_temperature = GetMaxValueFromThermalZone();
650 int max_temperature = start_temperature;
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700651
Tao Baof8119fb2017-04-18 21:35:12 -0700652 int result;
653 std::vector<std::string> log_buffer;
654 if (setup_install_mounts() != 0) {
655 LOG(ERROR) << "failed to set up expected mounts for install; aborting";
656 result = INSTALL_ERROR;
657 } else {
Tao Bao29ee69b2017-05-01 12:23:17 -0700658 result = really_install_package(path, wipe_cache, needs_mount, &log_buffer, retry_count,
Tao Baof8119fb2017-04-18 21:35:12 -0700659 &max_temperature);
660 }
661
662 // Measure the time spent to apply OTA update in seconds.
663 std::chrono::duration<double> duration = std::chrono::system_clock::now() - start;
664 int time_total = static_cast<int>(duration.count());
665
Tao Bao3e18f2b2017-09-29 17:11:13 -0700666 bool has_cache = volume_for_mount_point("/cache") != nullptr;
Tao Baof8119fb2017-04-18 21:35:12 -0700667 // Skip logging the uncrypt_status on devices without /cache.
668 if (has_cache) {
669 static constexpr const char* UNCRYPT_STATUS = "/cache/recovery/uncrypt_status";
670 if (ensure_path_mounted(UNCRYPT_STATUS) != 0) {
671 LOG(WARNING) << "Can't mount " << UNCRYPT_STATUS;
Doug Zongker239ac6a2013-08-20 16:03:25 -0700672 } else {
Tao Baof8119fb2017-04-18 21:35:12 -0700673 std::string uncrypt_status;
674 if (!android::base::ReadFileToString(UNCRYPT_STATUS, &uncrypt_status)) {
675 PLOG(WARNING) << "failed to read uncrypt status";
676 } else if (!android::base::StartsWith(uncrypt_status, "uncrypt_")) {
677 LOG(WARNING) << "corrupted uncrypt_status: " << uncrypt_status;
Tianjie Xua2867782017-03-24 14:13:56 -0700678 } else {
Tao Baof8119fb2017-04-18 21:35:12 -0700679 log_buffer.push_back(android::base::Trim(uncrypt_status));
Tianjie Xua2867782017-03-24 14:13:56 -0700680 }
Doug Zongker469243e2011-04-12 09:28:10 -0700681 }
Tao Baof8119fb2017-04-18 21:35:12 -0700682 }
Tao Baobadaac42016-09-26 11:39:14 -0700683
Tao Baof8119fb2017-04-18 21:35:12 -0700684 // The first two lines need to be the package name and install result.
685 std::vector<std::string> log_header = {
686 path,
687 result == INSTALL_SUCCESS ? "1" : "0",
688 "time_total: " + std::to_string(time_total),
689 "retry: " + std::to_string(retry_count),
690 };
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700691
Tao Baof8119fb2017-04-18 21:35:12 -0700692 int end_temperature = GetMaxValueFromThermalZone();
693 max_temperature = std::max(end_temperature, max_temperature);
694 if (start_temperature > 0) {
695 log_buffer.push_back("temperature_start: " + std::to_string(start_temperature));
696 }
697 if (end_temperature > 0) {
698 log_buffer.push_back("temperature_end: " + std::to_string(end_temperature));
699 }
700 if (max_temperature > 0) {
701 log_buffer.push_back("temperature_max: " + std::to_string(max_temperature));
702 }
Tianjie Xu3ee2b9d2017-03-27 14:12:26 -0700703
Tao Baof8119fb2017-04-18 21:35:12 -0700704 std::string log_content =
705 android::base::Join(log_header, "\n") + "\n" + android::base::Join(log_buffer, "\n") + "\n";
Tao Bao641fa972018-04-25 18:59:40 -0700706 const std::string& install_file = Paths::Get().temporary_install_file();
Tao Baof8119fb2017-04-18 21:35:12 -0700707 if (!android::base::WriteStringToFile(log_content, install_file)) {
708 PLOG(ERROR) << "failed to write " << install_file;
709 }
Tao Baobadaac42016-09-26 11:39:14 -0700710
Tao Baof8119fb2017-04-18 21:35:12 -0700711 // Write a copy into last_log.
712 LOG(INFO) << log_content;
Tao Baobadaac42016-09-26 11:39:14 -0700713
Tao Baof8119fb2017-04-18 21:35:12 -0700714 return result;
Doug Zongker469243e2011-04-12 09:28:10 -0700715}
Yabin Cui6faf0262016-06-09 14:09:39 -0700716
717bool verify_package(const unsigned char* package_data, size_t package_size) {
Tianjie Xue1d02fb2018-10-19 15:52:17 -0700718 static constexpr const char* CERTIFICATE_ZIP_FILE = "/system/etc/security/otacerts.zip";
719 std::vector<Certificate> loaded_keys = LoadKeysFromZipfile(CERTIFICATE_ZIP_FILE);
720 if (loaded_keys.empty()) {
Tao Bao5e535012017-03-16 17:37:38 -0700721 LOG(ERROR) << "Failed to load keys";
722 return false;
723 }
Tianjie Xue1d02fb2018-10-19 15:52:17 -0700724 LOG(INFO) << loaded_keys.size() << " key(s) loaded from " << CERTIFICATE_ZIP_FILE;
Yabin Cui6faf0262016-06-09 14:09:39 -0700725
Tao Bao5e535012017-03-16 17:37:38 -0700726 // Verify package.
727 ui->Print("Verifying update package...\n");
728 auto t0 = std::chrono::system_clock::now();
Tianjie Xue1d02fb2018-10-19 15:52:17 -0700729 int err = verify_file(package_data, package_size, loaded_keys,
Tao Bao5e535012017-03-16 17:37:38 -0700730 std::bind(&RecoveryUI::SetProgress, ui, std::placeholders::_1));
731 std::chrono::duration<double> duration = std::chrono::system_clock::now() - t0;
732 ui->Print("Update package verification took %.1f s (result %d).\n", duration.count(), err);
733 if (err != VERIFY_SUCCESS) {
734 LOG(ERROR) << "Signature verification failed";
735 LOG(ERROR) << "error: " << kZipVerificationFailure;
736 return false;
737 }
738 return true;
Yabin Cui6faf0262016-06-09 14:09:39 -0700739}