/*
* Copyright (C) 2007 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 "install/install.h"
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <inttypes.h>
#include <limits.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <unistd.h>
#include <algorithm>
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <functional>
#include <limits>
#include <mutex>
#include <thread>
#include <vector>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/parsedouble.h>
#include <android-base/parseint.h>
#include <android-base/properties.h>
#include <android-base/stringprintf.h>
#include <android-base/strings.h>
#include <android-base/unique_fd.h>
#include <vintf/VintfObjectRecovery.h>
#include "install/package.h"
#include "install/verifier.h"
#include "install/wipe_data.h"
#include "otautil/error_code.h"
#include "otautil/paths.h"
#include "otautil/roots.h"
#include "otautil/sysutil.h"
#include "otautil/thermalutil.h"
#include "private/setup_commands.h"
#include "recovery_ui/ui.h"
using namespace std::chrono_literals;
static constexpr int kRecoveryApiVersion = 3;
// Assert the version defined in code and in Android.mk are consistent.
static_assert(kRecoveryApiVersion == RECOVERY_API_VERSION, "Mismatching recovery API versions.");
// Default allocation of progress bar segments to operations
static constexpr int VERIFICATION_PROGRESS_TIME = 60;
static constexpr float VERIFICATION_PROGRESS_FRACTION = 0.25;
static std::condition_variable finish_log_temperature;
bool ReadMetadataFromPackage(ZipArchiveHandle zip, std::map<std::string, std::string>* metadata) {
CHECK(metadata != nullptr);
static constexpr const char* METADATA_PATH = "META-INF/com/android/metadata";
ZipEntry entry;
if (FindEntry(zip, METADATA_PATH, &entry) != 0) {
LOG(ERROR) << "Failed to find " << METADATA_PATH;
return false;
}
uint32_t length = entry.uncompressed_length;
std::string metadata_string(length, '\0');
int32_t err =
ExtractToMemory(zip, &entry, reinterpret_cast<uint8_t*>(&metadata_string[0]), length);
if (err != 0) {
LOG(ERROR) << "Failed to extract " << METADATA_PATH << ": " << ErrorCodeString(err);
return false;
}
for (const std::string& line : android::base::Split(metadata_string, "\n")) {
size_t eq = line.find('=');
if (eq != std::string::npos) {
metadata->emplace(android::base::Trim(line.substr(0, eq)),
android::base::Trim(line.substr(eq + 1)));
}
}
return true;
}
// Gets the value for the given key in |metadata|. Returns an emtpy string if the key isn't
// present.
static std::string get_value(const std::map<std::string, std::string>& metadata,
const std::string& key) {
const auto& it = metadata.find(key);
return (it == metadata.end()) ? "" : it->second;
}
static std::string OtaTypeToString(OtaType type) {
switch (type) {
case OtaType::AB:
return "AB";
case OtaType::BLOCK:
return "BLOCK";
case OtaType::BRICK:
return "BRICK";
}
}
// Read the build.version.incremental of src/tgt from the metadata and log it to last_install.
static void ReadSourceTargetBuild(const std::map<std::string, std::string>& metadata,
std::vector<std::string>* log_buffer) {
// Examples of the pre-build and post-build strings in metadata:
// pre-build-incremental=2943039
// post-build-incremental=2951741
auto source_build = get_value(metadata, "pre-build-incremental");
if (!source_build.empty()) {
log_buffer->push_back("source_build: " + source_build);
}
auto target_build = get_value(metadata, "post-build-incremental");
if (!target_build.empty()) {
log_buffer->push_back("target_build: " + target_build);
}
}
// Checks the build version, fingerprint and timestamp in the metadata of the A/B package.
// Downgrading is not allowed unless explicitly enabled in the package and only for
// incremental packages.
static bool CheckAbSpecificMetadata(const std::map<std::string, std::string>& metadata) {
// Incremental updates should match the current build.
auto device_pre_build = android::base::GetProperty("ro.build.version.incremental", "");
auto pkg_pre_build = get_value(metadata, "pre-build-incremental");
if (!pkg_pre_build.empty() && pkg_pre_build != device_pre_build) {
LOG(ERROR) << "Package is for source build " << pkg_pre_build << " but expected "
<< device_pre_build;
return false;
}
auto device_fingerprint = android::base::GetProperty("ro.build.fingerprint", "");
auto pkg_pre_build_fingerprint = get_value(metadata, "pre-build");
if (!pkg_pre_build_fingerprint.empty() && pkg_pre_build_fingerprint != device_fingerprint) {
LOG(ERROR) << "Package is for source build " << pkg_pre_build_fingerprint << " but expected "
<< device_fingerprint;
return false;
}
// Check for downgrade version.
int64_t build_timestamp =
android::base::GetIntProperty("ro.build.date.utc", std::numeric_limits<int64_t>::max());
int64_t pkg_post_timestamp = 0;
// We allow to full update to the same version we are running, in case there
// is a problem with the current copy of that version.
auto pkg_post_timestamp_string = get_value(metadata, "post-timestamp");
if (pkg_post_timestamp_string.empty() ||
!android::base::ParseInt(pkg_post_timestamp_string, &pkg_post_timestamp) ||
pkg_post_timestamp < build_timestamp) {
if (get_value(metadata, "ota-downgrade") != "yes") {
LOG(ERROR) << "Update package is older than the current build, expected a build "
"newer than timestamp "
<< build_timestamp << " but package has timestamp " << pkg_post_timestamp
<< " and downgrade not allowed.";
return false;
}
if (pkg_pre_build_fingerprint.empty()) {
LOG(ERROR) << "Downgrade package must have a pre-build version set, not allowed.";
return false;
}
}
return true;
}
bool CheckPackageMetadata(const std::map<std::string, std::string>& metadata, OtaType ota_type) {
auto package_ota_type = get_value(metadata, "ota-type");
auto expected_ota_type = OtaTypeToString(ota_type);
if (ota_type != OtaType::AB && ota_type != OtaType::BRICK) {
LOG(INFO) << "Skip package metadata check for ota type " << expected_ota_type;
return true;
}
if (package_ota_type != expected_ota_type) {
LOG(ERROR) << "Unexpected ota package type, expects " << expected_ota_type << ", actual "
<< package_ota_type;
return false;
}
auto device = android::base::GetProperty("ro.product.device", "");
auto pkg_device = get_value(metadata, "pre-device");
if (pkg_device != device || pkg_device.empty()) {
LOG(ERROR) << "Package is for product " << pkg_device << " but expected " << device;
return false;
}
// We allow the package to not have any serialno; and we also allow it to carry multiple serial
// numbers split by "|"; e.g. serialno=serialno1|serialno2|serialno3 ... We will fail the
// verification if the device's serialno doesn't match any of these carried numbers.
auto pkg_serial_no = get_value(metadata, "serialno");
if (!pkg_serial_no.empty()) {
auto device_serial_no = android::base::GetProperty("ro.serialno", "");
bool serial_number_match = false;
for (const auto& number : android::base::Split(pkg_serial_no, "|")) {
if (device_serial_no == android::base::Trim(number)) {
serial_number_match = true;
}
}
if (!serial_number_match) {
LOG(ERROR) << "Package is for serial " << pkg_serial_no;
return false;
}
}
if (ota_type == OtaType::AB) {
return CheckAbSpecificMetadata(metadata);
}
return true;
}
bool SetUpAbUpdateCommands(const std::string& package, ZipArchiveHandle zip, int status_fd,
std::vector<std::string>* cmd) {
CHECK(cmd != nullptr);
// For A/B updates we extract the payload properties to a buffer and obtain the RAW payload offset
// in the zip file.
static constexpr const char* AB_OTA_PAYLOAD_PROPERTIES = "payload_properties.txt";
ZipEntry properties_entry;
if (FindEntry(zip, AB_OTA_PAYLOAD_PROPERTIES, &properties_entry) != 0) {
LOG(ERROR) << "Failed to find " << AB_OTA_PAYLOAD_PROPERTIES;
return false;
}
uint32_t properties_entry_length = properties_entry.uncompressed_length;
std::vector<uint8_t> payload_properties(properties_entry_length);
int32_t err =
ExtractToMemory(zip, &properties_entry, payload_properties.data(), properties_entry_length);
if (err != 0) {
LOG(ERROR) << "Failed to extract " << AB_OTA_PAYLOAD_PROPERTIES << ": " << ErrorCodeString(err);
return false;
}
static constexpr const char* AB_OTA_PAYLOAD = "payload.bin";
ZipEntry payload_entry;
if (FindEntry(zip, AB_OTA_PAYLOAD, &payload_entry) != 0) {
LOG(ERROR) << "Failed to find " << AB_OTA_PAYLOAD;
return false;
}
long payload_offset = payload_entry.offset;
*cmd = {
"/system/bin/update_engine_sideload",
"--payload=file://" + package,
android::base::StringPrintf("--offset=%ld", payload_offset),
"--headers=" + std::string(payload_properties.begin(), payload_properties.end()),
android::base::StringPrintf("--status_fd=%d", status_fd),
};
return true;
}
bool SetUpNonAbUpdateCommands(const std::string& package, ZipArchiveHandle zip, int retry_count,
int status_fd, std::vector<std::string>* cmd) {
CHECK(cmd != nullptr);
// In non-A/B updates we extract the update binary from the package.
static constexpr const char* UPDATE_BINARY_NAME = "META-INF/com/google/android/update-binary";
ZipEntry binary_entry;
if (FindEntry(zip, UPDATE_BINARY_NAME, &binary_entry) != 0) {
LOG(ERROR) << "Failed to find update binary " << UPDATE_BINARY_NAME;
return false;
}
const std::string binary_path = Paths::Get().temporary_update_binary();
unlink(binary_path.c_str());
android::base::unique_fd fd(
open(binary_path.c_str(), O_CREAT | O_WRONLY | O_TRUNC | O_CLOEXEC, 0755));
if (fd == -1) {
PLOG(ERROR) << "Failed to create " << binary_path;
return false;
}
if (auto error = ExtractEntryToFile(zip, &binary_entry, fd); error != 0) {
LOG(ERROR) << "Failed to extract " << UPDATE_BINARY_NAME << ": " << ErrorCodeString(error);
return false;
}
// When executing the update binary contained in the package, the arguments passed are:
// - the version number for this interface
// - an FD to which the program can write in order to update the progress bar.
// - the name of the package zip file.
// - an optional argument "retry" if this update is a retry of a failed update attempt.
*cmd = {
binary_path,
std::to_string(kRecoveryApiVersion),
std::to_string(status_fd),
package,
};
if (retry_count > 0) {
cmd->push_back("retry");
}
return true;
}
static void log_max_temperature(int* max_temperature, const std::atomic<bool>& logger_finished) {
CHECK(max_temperature != nullptr);
std::mutex mtx;
std::unique_lock<std::mutex> lck(mtx);
while (!logger_finished.load() &&
finish_log_temperature.wait_for(lck, 20s) == std::cv_status::timeout) {
*max_temperature = std::max(*max_temperature, GetMaxValueFromThermalZone());
}
}
// If the package contains an update binary, extract it and run it.
static InstallResult TryUpdateBinary(const std::string& package, ZipArchiveHandle zip,
bool* wipe_cache, std::vector<std::string>* log_buffer,
int retry_count, int* max_temperature, RecoveryUI* ui) {
std::map<std::string, std::string> metadata;
if (!ReadMetadataFromPackage(zip, &metadata)) {
LOG(ERROR) << "Failed to parse metadata in the zip file";
return INSTALL_CORRUPT;
}
bool is_ab = android::base::GetBoolProperty("ro.build.ab_update", false);
// Verify against the metadata in the package first.
if (is_ab && !CheckPackageMetadata(metadata, OtaType::AB)) {
log_buffer->push_back(android::base::StringPrintf("error: %d", kUpdateBinaryCommandFailure));
return INSTALL_ERROR;
}
ReadSourceTargetBuild(metadata, log_buffer);
// The updater in child process writes to the pipe to communicate with recovery.
android::base::unique_fd pipe_read, pipe_write;
// Explicitly disable O_CLOEXEC using 0 as the flags (last) parameter to Pipe
// so that the child updater process will recieve a non-closed fd.
if (!android::base::Pipe(&pipe_read, &pipe_write, 0)) {
PLOG(ERROR) << "Failed to create pipe for updater-recovery communication";
return INSTALL_CORRUPT;
}
// The updater-recovery communication protocol.
//
// progress <frac> <secs>
// fill up the next <frac> part of of the progress bar over <secs> seconds. If <secs> is
// zero, use `set_progress` commands to manually control the progress of this segment of the
// bar.
//
// set_progress <frac>
// <frac> should be between 0.0 and 1.0; sets the progress bar within the segment defined by
// the most recent progress command.
//
// ui_print <string>
// display <string> on the screen.
//
// wipe_cache
// a wipe of cache will be performed following a successful installation.
//
// clear_display
// turn off the text display.
//
// enable_reboot
// packages can explicitly request that they want the user to be able to reboot during
// installation (useful for debugging packages that don't exit).
//
// retry_update
// updater encounters some issue during the update. It requests a reboot to retry the same
// package automatically.
//
// log <string>
// updater requests logging the string (e.g. cause of the failure).
//
std::vector<std::string> args;
if (auto setup_result =
is_ab ? SetUpAbUpdateCommands(package, zip, pipe_write.get(), &args)
: SetUpNonAbUpdateCommands(package, zip, retry_count, pipe_write.get(), &args);
!setup_result) {
log_buffer->push_back(android::base::StringPrintf("error: %d", kUpdateBinaryCommandFailure));
return INSTALL_CORRUPT;
}
pid_t pid = fork();
if (pid == -1) {
PLOG(ERROR) << "Failed to fork update binary";
log_buffer->push_back(android::base::StringPrintf("error: %d", kForkUpdateBinaryFailure));
return INSTALL_ERROR;
}
if (pid == 0) {
umask(022);
pipe_read.reset();
// Convert the std::string vector to a NULL-terminated char* vector suitable for execv.
auto chr_args = StringVectorToNullTerminatedArray(args);
execv(chr_args[0], chr_args.data());
// We shouldn't use LOG/PLOG in the forked process, since they may cause the child process to
// hang. This deadlock results from an improperly copied mutex in the ui functions.
// (Bug: 34769056)
fprintf(stdout, "E:Can't run %s (%s)\n", chr_args[0], strerror(errno));
_exit(EXIT_FAILURE);
}
pipe_write.reset();
std::atomic<bool> logger_finished(false);
std::thread temperature_logger(log_max_temperature, max_temperature, std::ref(logger_finished));
*wipe_cache = false;
bool retry_update = false;
char buffer[1024];
FILE* from_child = android::base::Fdopen(std::move(pipe_read), "r");
while (fgets(buffer, sizeof(buffer), from_child) != nullptr) {
std::string line(buffer);
size_t space = line.find_first_of(" \n");
std::string command(line.substr(0, space));
if (command.empty()) continue;
// Get rid of the leading and trailing space and/or newline.
std::string args = space == std::string::npos ? "" : android::base::Trim(line.substr(space));
if (command == "progress") {
std::vector<std::string> tokens = android::base::Split(args, " ");
double fraction;
int seconds;
if (tokens.size() == 2 && android::base::ParseDouble(tokens[0].c_str(), &fraction) &&
android::base::ParseInt(tokens[1], &seconds)) {
ui->ShowProgress(fraction * (1 - VERIFICATION_PROGRESS_FRACTION), seconds);
} else {
LOG(ERROR) << "invalid \"progress\" parameters: " << line;
}
} else if (command == "set_progress") {
std::vector<std::string> tokens = android::base::Split(args, " ");
double fraction;
if (tokens.size() == 1 && android::base::ParseDouble(tokens[0].c_str(), &fraction)) {
ui->SetProgress(fraction);
} else {
LOG(ERROR) << "invalid \"set_progress\" parameters: " << line;
}
} else if (command == "ui_print") {
ui->PrintOnScreenOnly("%s\n", args.c_str());
fflush(stdout);
} else if (command == "wipe_cache") {
*wipe_cache = true;
} else if (command == "clear_display") {
ui->SetBackground(RecoveryUI::NONE);
} else if (command == "enable_reboot") {
// packages can explicitly request that they want the user
// to be able to reboot during installation (useful for
// debugging packages that don't exit).
ui->SetEnableReboot(true);
} else if (command == "retry_update") {
retry_update = true;
} else if (command == "log") {
if (!args.empty()) {
// Save the logging request from updater and write to last_install later.
log_buffer->push_back(args);
} else {
LOG(ERROR) << "invalid \"log\" parameters: " << line;
}
} else {
LOG(ERROR) << "unknown command [" << command << "]";
}
}
fclose(from_child);
int status;
waitpid(pid, &status, 0);
logger_finished.store(true);
finish_log_temperature.notify_one();
temperature_logger.join();
if (retry_update) {
return INSTALL_RETRY;
}
if (WIFEXITED(status)) {
if (WEXITSTATUS(status) != EXIT_SUCCESS) {
LOG(ERROR) << "Error in " << package << " (status " << WEXITSTATUS(status) << ")";
return INSTALL_ERROR;
}
} else if (WIFSIGNALED(status)) {
LOG(ERROR) << "Error in " << package << " (killed by signal " << WTERMSIG(status) << ")";
return INSTALL_ERROR;
} else {
LOG(FATAL) << "Invalid status code " << status;
}
return INSTALL_SUCCESS;
}
// Verifes the compatibility info in a Treble-compatible package. Returns true directly if the
// entry doesn't exist. Note that the compatibility info is packed in a zip file inside the OTA
// package.
bool verify_package_compatibility(ZipArchiveHandle package_zip) {
LOG(INFO) << "Verifying package compatibility...";
static constexpr const char* COMPATIBILITY_ZIP_ENTRY = "compatibility.zip";
ZipEntry compatibility_entry;
if (FindEntry(package_zip, COMPATIBILITY_ZIP_ENTRY, &compatibility_entry) != 0) {
LOG(INFO) << "Package doesn't contain " << COMPATIBILITY_ZIP_ENTRY << " entry";
return true;
}
std::string zip_content(compatibility_entry.uncompressed_length, '\0');
int32_t ret;
if ((ret = ExtractToMemory(package_zip, &compatibility_entry,
reinterpret_cast<uint8_t*>(&zip_content[0]),
compatibility_entry.uncompressed_length)) != 0) {
LOG(ERROR) << "Failed to read " << COMPATIBILITY_ZIP_ENTRY << ": " << ErrorCodeString(ret);
return false;
}
ZipArchiveHandle zip_handle;
ret = OpenArchiveFromMemory(static_cast<void*>(const_cast<char*>(zip_content.data())),
zip_content.size(), COMPATIBILITY_ZIP_ENTRY, &zip_handle);
if (ret != 0) {
LOG(ERROR) << "Failed to OpenArchiveFromMemory: " << ErrorCodeString(ret);
return false;
}
// Iterate all the entries inside COMPATIBILITY_ZIP_ENTRY and read the contents.
void* cookie;
ret = StartIteration(zip_handle, &cookie);
if (ret != 0) {
LOG(ERROR) << "Failed to start iterating zip entries: " << ErrorCodeString(ret);
CloseArchive(zip_handle);
return false;
}
std::unique_ptr<void, decltype(&EndIteration)> guard(cookie, EndIteration);
std::vector<std::string> compatibility_info;
ZipEntry info_entry;
ZipString info_name;
while (Next(cookie, &info_entry, &info_name) == 0) {
std::string content(info_entry.uncompressed_length, '\0');
int32_t ret = ExtractToMemory(zip_handle, &info_entry, reinterpret_cast<uint8_t*>(&content[0]),
info_entry.uncompressed_length);
if (ret != 0) {
LOG(ERROR) << "Failed to read " << info_name.name << ": " << ErrorCodeString(ret);
CloseArchive(zip_handle);
return false;
}
compatibility_info.emplace_back(std::move(content));
}
CloseArchive(zip_handle);
// VintfObjectRecovery::CheckCompatibility returns zero on success.
std::string err;
int result = android::vintf::VintfObjectRecovery::CheckCompatibility(compatibility_info, &err);
if (result == 0) {
return true;
}
LOG(ERROR) << "Failed to verify package compatibility (result " << result << "): " << err;
return false;
}
static InstallResult VerifyAndInstallPackage(const std::string& path, bool* wipe_cache,
bool needs_mount, std::vector<std::string>* log_buffer,
int retry_count, int* max_temperature,
RecoveryUI* ui) {
ui->SetBackground(RecoveryUI::INSTALLING_UPDATE);
ui->Print("Finding update package...\n");
// Give verification half the progress bar...
ui->SetProgressType(RecoveryUI::DETERMINATE);
ui->ShowProgress(VERIFICATION_PROGRESS_FRACTION, VERIFICATION_PROGRESS_TIME);
LOG(INFO) << "Update location: " << path;
// Map the update package into memory.
ui->Print("Opening update package...\n");
if (needs_mount) {
if (path[0] == '@') {
ensure_path_mounted(path.substr(1));
} else {
ensure_path_mounted(path);
}
}
auto package = Package::CreateMemoryPackage(
path, std::bind(&RecoveryUI::SetProgress, ui, std::placeholders::_1));
if (!package) {
log_buffer->push_back(android::base::StringPrintf("error: %d", kMapFileFailure));
return INSTALL_CORRUPT;
}
// Verify package.
if (!verify_package(package.get(), ui)) {
log_buffer->push_back(android::base::StringPrintf("error: %d", kZipVerificationFailure));
return INSTALL_CORRUPT;
}
// Try to open the package.
ZipArchiveHandle zip = package->GetZipArchiveHandle();
if (!zip) {
log_buffer->push_back(android::base::StringPrintf("error: %d", kZipOpenFailure));
return INSTALL_CORRUPT;
}
// Additionally verify the compatibility of the package if it's a fresh install.
if (retry_count == 0 && !verify_package_compatibility(zip)) {
log_buffer->push_back(android::base::StringPrintf("error: %d", kPackageCompatibilityFailure));
return INSTALL_CORRUPT;
}
// Verify and install the contents of the package.
ui->Print("Installing update...\n");
if (retry_count > 0) {
ui->Print("Retry attempt: %d\n", retry_count);
}
ui->SetEnableReboot(false);
auto result =
TryUpdateBinary(path, zip, wipe_cache, log_buffer, retry_count, max_temperature, ui);
ui->SetEnableReboot(true);
ui->Print("\n");
return result;
}
InstallResult InstallPackage(const std::string& path, bool should_wipe_cache, bool needs_mount,
int retry_count, RecoveryUI* ui) {
CHECK(!path.empty());
auto start = std::chrono::system_clock::now();
int start_temperature = GetMaxValueFromThermalZone();
int max_temperature = start_temperature;
InstallResult result;
std::vector<std::string> log_buffer;
if (setup_install_mounts() != 0) {
LOG(ERROR) << "failed to set up expected mounts for install; aborting";
result = INSTALL_ERROR;
} else {
bool updater_wipe_cache = false;
result = VerifyAndInstallPackage(path, &updater_wipe_cache, needs_mount, &log_buffer,
retry_count, &max_temperature, ui);
should_wipe_cache = should_wipe_cache || updater_wipe_cache;
}
// Measure the time spent to apply OTA update in seconds.
std::chrono::duration<double> duration = std::chrono::system_clock::now() - start;
int time_total = static_cast<int>(duration.count());
bool has_cache = volume_for_mount_point("/cache") != nullptr;
// Skip logging the uncrypt_status on devices without /cache.
if (has_cache) {
static constexpr const char* UNCRYPT_STATUS = "/cache/recovery/uncrypt_status";
if (ensure_path_mounted(UNCRYPT_STATUS) != 0) {
LOG(WARNING) << "Can't mount " << UNCRYPT_STATUS;
} else {
std::string uncrypt_status;
if (!android::base::ReadFileToString(UNCRYPT_STATUS, &uncrypt_status)) {
PLOG(WARNING) << "failed to read uncrypt status";
} else if (!android::base::StartsWith(uncrypt_status, "uncrypt_")) {
LOG(WARNING) << "corrupted uncrypt_status: " << uncrypt_status;
} else {
log_buffer.push_back(android::base::Trim(uncrypt_status));
}
}
}
// The first two lines need to be the package name and install result.
std::vector<std::string> log_header = {
path,
result == INSTALL_SUCCESS ? "1" : "0",
"time_total: " + std::to_string(time_total),
"retry: " + std::to_string(retry_count),
};
int end_temperature = GetMaxValueFromThermalZone();
max_temperature = std::max(end_temperature, max_temperature);
if (start_temperature > 0) {
log_buffer.push_back("temperature_start: " + std::to_string(start_temperature));
}
if (end_temperature > 0) {
log_buffer.push_back("temperature_end: " + std::to_string(end_temperature));
}
if (max_temperature > 0) {
log_buffer.push_back("temperature_max: " + std::to_string(max_temperature));
}
std::string log_content =
android::base::Join(log_header, "\n") + "\n" + android::base::Join(log_buffer, "\n") + "\n";
const std::string& install_file = Paths::Get().temporary_install_file();
if (!android::base::WriteStringToFile(log_content, install_file)) {
PLOG(ERROR) << "failed to write " << install_file;
}
// Write a copy into last_log.
LOG(INFO) << log_content;
if (result == INSTALL_SUCCESS && should_wipe_cache) {
if (!WipeCache(ui, nullptr)) {
result = INSTALL_ERROR;
}
}
return result;
}
bool verify_package(Package* package, RecoveryUI* ui) {
static constexpr const char* CERTIFICATE_ZIP_FILE = "/system/etc/security/otacerts.zip";
std::vector<Certificate> loaded_keys = LoadKeysFromZipfile(CERTIFICATE_ZIP_FILE);
if (loaded_keys.empty()) {
LOG(ERROR) << "Failed to load keys";
return false;
}
LOG(INFO) << loaded_keys.size() << " key(s) loaded from " << CERTIFICATE_ZIP_FILE;
// Verify package.
ui->Print("Verifying update package...\n");
auto t0 = std::chrono::system_clock::now();
int err = verify_file(package, loaded_keys);
std::chrono::duration<double> duration = std::chrono::system_clock::now() - t0;
ui->Print("Update package verification took %.1f s (result %d).\n", duration.count(), err);
if (err != VERIFY_SUCCESS) {
LOG(ERROR) << "Signature verification failed";
LOG(ERROR) << "error: " << kZipVerificationFailure;
return false;
}
return true;
}
