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-rw-r--r--install.cpp120
1 files changed, 106 insertions, 14 deletions
diff --git a/install.cpp b/install.cpp
index 9106db595..3d0729064 100644
--- a/install.cpp
+++ b/install.cpp
@@ -23,9 +23,16 @@
#include <sys/wait.h>
#include <unistd.h>
+#include <chrono>
+#include <string>
#include <vector>
+#include <android-base/parseint.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+
#include "common.h"
+#include "error_code.h"
#include "install.h"
#include "minui/minui.h"
#include "minzip/SysUtil.h"
@@ -38,6 +45,7 @@ extern RecoveryUI* ui;
#define ASSUMED_UPDATE_BINARY_NAME "META-INF/com/google/android/update-binary"
#define PUBLIC_KEYS_FILE "/res/keys"
+static constexpr const char* METADATA_PATH = "META-INF/com/android/metadata";
// Default allocation of progress bar segments to operations
static const int VERIFICATION_PROGRESS_TIME = 60;
@@ -45,9 +53,64 @@ static const float VERIFICATION_PROGRESS_FRACTION = 0.25;
static const float DEFAULT_FILES_PROGRESS_FRACTION = 0.4;
static const float DEFAULT_IMAGE_PROGRESS_FRACTION = 0.1;
+// This function parses and returns the build.version.incremental
+static int parse_build_number(std::string str) {
+ size_t pos = str.find("=");
+ if (pos != std::string::npos) {
+ std::string num_string = android::base::Trim(str.substr(pos+1));
+ int build_number;
+ if (android::base::ParseInt(num_string.c_str(), &build_number, 0)) {
+ return build_number;
+ }
+ }
+
+ LOGE("Failed to parse build number in %s.\n", str.c_str());
+ return -1;
+}
+
+// Read the build.version.incremental of src/tgt from the metadata and log it to last_install.
+static void read_source_target_build(ZipArchive* zip, std::vector<std::string>& log_buffer) {
+ const ZipEntry* meta_entry = mzFindZipEntry(zip, METADATA_PATH);
+ if (meta_entry == nullptr) {
+ LOGE("Failed to find %s in update package.\n", METADATA_PATH);
+ return;
+ }
+
+ std::string meta_data(meta_entry->uncompLen, '\0');
+ if (!mzReadZipEntry(zip, meta_entry, &meta_data[0], meta_entry->uncompLen)) {
+ LOGE("Failed to read metadata in update package.\n");
+ return;
+ }
+
+ // Examples of the pre-build and post-build strings in metadata:
+ // pre-build-incremental=2943039
+ // post-build-incremental=2951741
+ std::vector<std::string> lines = android::base::Split(meta_data, "\n");
+ for (const std::string& line : lines) {
+ std::string str = android::base::Trim(line);
+ if (android::base::StartsWith(str, "pre-build-incremental")){
+ int source_build = parse_build_number(str);
+ if (source_build != -1) {
+ log_buffer.push_back(android::base::StringPrintf("source_build: %d",
+ source_build));
+ }
+ } else if (android::base::StartsWith(str, "post-build-incremental")) {
+ int target_build = parse_build_number(str);
+ if (target_build != -1) {
+ log_buffer.push_back(android::base::StringPrintf("target_build: %d",
+ target_build));
+ }
+ }
+ }
+}
+
// If the package contains an update binary, extract it and run it.
static int
-try_update_binary(const char* path, ZipArchive* zip, bool* wipe_cache) {
+try_update_binary(const char* path, ZipArchive* zip, bool* wipe_cache,
+ std::vector<std::string>& log_buffer, int retry_count)
+{
+ read_source_target_build(zip, log_buffer);
+
const ZipEntry* binary_entry =
mzFindZipEntry(zip, ASSUMED_UPDATE_BINARY_NAME);
if (binary_entry == NULL) {
@@ -120,15 +183,19 @@ try_update_binary(const char* path, ZipArchive* zip, bool* wipe_cache) {
//
// - the name of the package zip file.
//
+ // - an optional argument "retry" if this update is a retry of a failed
+ // update attempt.
+ //
- const char* args[5];
+ const char* args[6];
args[0] = binary;
args[1] = EXPAND(RECOVERY_API_VERSION); // defined in Android.mk
char temp[16];
snprintf(temp, sizeof(temp), "%d", pipefd[1]);
args[2] = temp;
args[3] = path;
- args[4] = NULL;
+ args[4] = retry_count > 0 ? "retry" : NULL;
+ args[5] = NULL;
pid_t pid = fork();
if (pid == 0) {
@@ -180,6 +247,10 @@ try_update_binary(const char* path, ZipArchive* zip, bool* wipe_cache) {
ui->SetEnableReboot(true);
} else if (strcmp(command, "retry_update") == 0) {
retry_update = true;
+ } else if (strcmp(command, "log") == 0) {
+ // Save the logging request from updater and write to
+ // last_install later.
+ log_buffer.push_back(std::string(strtok(NULL, "\n")));
} else {
LOGE("unknown command [%s]\n", command);
}
@@ -200,7 +271,8 @@ try_update_binary(const char* path, ZipArchive* zip, bool* wipe_cache) {
}
static int
-really_install_package(const char *path, bool* wipe_cache, bool needs_mount)
+really_install_package(const char *path, bool* wipe_cache, bool needs_mount,
+ std::vector<std::string>& log_buffer, int retry_count)
{
ui->SetBackground(RecoveryUI::INSTALLING_UPDATE);
ui->Print("Finding update package...\n");
@@ -226,6 +298,7 @@ really_install_package(const char *path, bool* wipe_cache, bool needs_mount)
return INSTALL_CORRUPT;
}
+ // Load keys.
std::vector<Certificate> loadedKeys;
if (!load_keys(PUBLIC_KEYS_FILE, loadedKeys)) {
LOGE("Failed to load keys\n");
@@ -233,31 +306,38 @@ really_install_package(const char *path, bool* wipe_cache, bool needs_mount)
}
LOGI("%zu key(s) loaded from %s\n", loadedKeys.size(), PUBLIC_KEYS_FILE);
+ // Verify package.
ui->Print("Verifying update package...\n");
-
+ auto t0 = std::chrono::system_clock::now();
int err = verify_file(map.addr, map.length, loadedKeys);
- LOGI("verify_file returned %d\n", err);
+ 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) {
LOGE("signature verification failed\n");
+ log_buffer.push_back(android::base::StringPrintf("error: %d", kZipVerificationFailure));
+
sysReleaseMap(&map);
return INSTALL_CORRUPT;
}
- /* Try to open the package.
- */
+ // Try to open the package.
ZipArchive zip;
err = mzOpenZipArchive(map.addr, map.length, &zip);
if (err != 0) {
LOGE("Can't open %s\n(%s)\n", path, err != -1 ? strerror(err) : "bad");
+ log_buffer.push_back(android::base::StringPrintf("error: %d", kZipOpenFailure));
+
sysReleaseMap(&map);
return INSTALL_CORRUPT;
}
- /* Verify and install the contents of the package.
- */
+ // 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);
- int result = try_update_binary(path, &zip, wipe_cache);
+ int result = try_update_binary(path, &zip, wipe_cache, log_buffer, retry_count);
ui->SetEnableReboot(true);
ui->Print("\n");
@@ -268,9 +348,10 @@ really_install_package(const char *path, bool* wipe_cache, bool needs_mount)
int
install_package(const char* path, bool* wipe_cache, const char* install_file,
- bool needs_mount)
+ bool needs_mount, int retry_count)
{
modified_flash = true;
+ auto start = std::chrono::system_clock::now();
FILE* install_log = fopen_path(install_file, "w");
if (install_log) {
@@ -280,15 +361,26 @@ install_package(const char* path, bool* wipe_cache, const char* install_file,
LOGE("failed to open last_install: %s\n", strerror(errno));
}
int result;
+ std::vector<std::string> log_buffer;
if (setup_install_mounts() != 0) {
LOGE("failed to set up expected mounts for install; aborting\n");
result = INSTALL_ERROR;
} else {
- result = really_install_package(path, wipe_cache, needs_mount);
+ result = really_install_package(path, wipe_cache, needs_mount, log_buffer, retry_count);
}
- if (install_log) {
+ if (install_log != nullptr) {
fputc(result == INSTALL_SUCCESS ? '1' : '0', install_log);
fputc('\n', install_log);
+ std::chrono::duration<double> duration = std::chrono::system_clock::now() - start;
+ int count = static_cast<int>(duration.count());
+ // Report the time spent to apply OTA update in seconds.
+ fprintf(install_log, "time_total: %d\n", count);
+ fprintf(install_log, "retry: %d\n", retry_count);
+
+ for (const auto& s : log_buffer) {
+ fprintf(install_log, "%s\n", s.c_str());
+ }
+
fclose(install_log);
}
return result;
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 06:11:33 +0100