/* * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "bootloader.h" #include "common.h" #include "cutils/properties.h" #include "cutils/android_reboot.h" #include "install.h" #include "minui/minui.h" #include "minzip/DirUtil.h" #include "roots.h" #include "ui.h" #include "screen_ui.h" #include "device.h" #include "adb_install.h" extern "C" { #include "minadbd/adb.h" } struct selabel_handle *sehandle; static const struct option OPTIONS[] = { { "send_intent", required_argument, NULL, 's' }, { "update_package", required_argument, NULL, 'u' }, { "wipe_data", no_argument, NULL, 'w' }, { "wipe_cache", no_argument, NULL, 'c' }, { "show_text", no_argument, NULL, 't' }, { "just_exit", no_argument, NULL, 'x' }, { "locale", required_argument, NULL, 'l' }, { "stages", required_argument, NULL, 'g' }, { "shutdown_after", no_argument, NULL, 'p' }, { NULL, 0, NULL, 0 }, }; #define LAST_LOG_FILE "/cache/recovery/last_log" static const char *CACHE_LOG_DIR = "/cache/recovery"; static const char *COMMAND_FILE = "/cache/recovery/command"; static const char *INTENT_FILE = "/cache/recovery/intent"; static const char *LOG_FILE = "/cache/recovery/log"; static const char *LAST_INSTALL_FILE = "/cache/recovery/last_install"; static const char *LOCALE_FILE = "/cache/recovery/last_locale"; static const char *CACHE_ROOT = "/cache"; static const char *SDCARD_ROOT = "/sdcard"; static const char *TEMPORARY_LOG_FILE = "/tmp/recovery.log"; static const char *TEMPORARY_INSTALL_FILE = "/tmp/last_install"; static const char *SIDELOAD_TEMP_DIR = "/tmp/sideload"; RecoveryUI* ui = NULL; char* locale = NULL; char recovery_version[PROPERTY_VALUE_MAX+1]; char* stage = NULL; /* * The recovery tool communicates with the main system through /cache files. * /cache/recovery/command - INPUT - command line for tool, one arg per line * /cache/recovery/log - OUTPUT - combined log file from recovery run(s) * /cache/recovery/intent - OUTPUT - intent that was passed in * * The arguments which may be supplied in the recovery.command file: * --send_intent=anystring - write the text out to recovery.intent * --update_package=path - verify install an OTA package file * --wipe_data - erase user data (and cache), then reboot * --wipe_cache - wipe cache (but not user data), then reboot * --set_encrypted_filesystem=on|off - enables / diasables encrypted fs * --just_exit - do nothing; exit and reboot * * After completing, we remove /cache/recovery/command and reboot. * Arguments may also be supplied in the bootloader control block (BCB). * These important scenarios must be safely restartable at any point: * * FACTORY RESET * 1. user selects "factory reset" * 2. main system writes "--wipe_data" to /cache/recovery/command * 3. main system reboots into recovery * 4. get_args() writes BCB with "boot-recovery" and "--wipe_data" * -- after this, rebooting will restart the erase -- * 5. erase_volume() reformats /data * 6. erase_volume() reformats /cache * 7. finish_recovery() erases BCB * -- after this, rebooting will restart the main system -- * 8. main() calls reboot() to boot main system * * OTA INSTALL * 1. main system downloads OTA package to /cache/some-filename.zip * 2. main system writes "--update_package=/cache/some-filename.zip" * 3. main system reboots into recovery * 4. get_args() writes BCB with "boot-recovery" and "--update_package=..." * -- after this, rebooting will attempt to reinstall the update -- * 5. install_package() attempts to install the update * NOTE: the package install must itself be restartable from any point * 6. finish_recovery() erases BCB * -- after this, rebooting will (try to) restart the main system -- * 7. ** if install failed ** * 7a. prompt_and_wait() shows an error icon and waits for the user * 7b; the user reboots (pulling the battery, etc) into the main system * 8. main() calls maybe_install_firmware_update() * ** if the update contained radio/hboot firmware **: * 8a. m_i_f_u() writes BCB with "boot-recovery" and "--wipe_cache" * -- after this, rebooting will reformat cache & restart main system -- * 8b. m_i_f_u() writes firmware image into raw cache partition * 8c. m_i_f_u() writes BCB with "update-radio/hboot" and "--wipe_cache" * -- after this, rebooting will attempt to reinstall firmware -- * 8d. bootloader tries to flash firmware * 8e. bootloader writes BCB with "boot-recovery" (keeping "--wipe_cache") * -- after this, rebooting will reformat cache & restart main system -- * 8f. erase_volume() reformats /cache * 8g. finish_recovery() erases BCB * -- after this, rebooting will (try to) restart the main system -- * 9. main() calls reboot() to boot main system */ static const int MAX_ARG_LENGTH = 4096; static const int MAX_ARGS = 100; // open a given path, mounting partitions as necessary FILE* fopen_path(const char *path, const char *mode) { if (ensure_path_mounted(path) != 0) { LOGE("Can't mount %s\n", path); return NULL; } // When writing, try to create the containing directory, if necessary. // Use generous permissions, the system (init.rc) will reset them. if (strchr("wa", mode[0])) dirCreateHierarchy(path, 0777, NULL, 1, sehandle); FILE *fp = fopen(path, mode); return fp; } // close a file, log an error if the error indicator is set static void check_and_fclose(FILE *fp, const char *name) { fflush(fp); if (ferror(fp)) LOGE("Error in %s\n(%s)\n", name, strerror(errno)); fclose(fp); } // command line args come from, in decreasing precedence: // - the actual command line // - the bootloader control block (one per line, after "recovery") // - the contents of COMMAND_FILE (one per line) static void get_args(int *argc, char ***argv) { struct bootloader_message boot; memset(&boot, 0, sizeof(boot)); get_bootloader_message(&boot); // this may fail, leaving a zeroed structure stage = strndup(boot.stage, sizeof(boot.stage)); if (boot.command[0] != 0 && boot.command[0] != 255) { LOGI("Boot command: %.*s\n", (int)sizeof(boot.command), boot.command); } if (boot.status[0] != 0 && boot.status[0] != 255) { LOGI("Boot status: %.*s\n", (int)sizeof(boot.status), boot.status); } // --- if arguments weren't supplied, look in the bootloader control block if (*argc <= 1) { boot.recovery[sizeof(boot.recovery) - 1] = '\0'; // Ensure termination const char *arg = strtok(boot.recovery, "\n"); if (arg != NULL && !strcmp(arg, "recovery")) { *argv = (char **) malloc(sizeof(char *) * MAX_ARGS); (*argv)[0] = strdup(arg); for (*argc = 1; *argc < MAX_ARGS; ++*argc) { if ((arg = strtok(NULL, "\n")) == NULL) break; (*argv)[*argc] = strdup(arg); } LOGI("Got arguments from boot message\n"); } else if (boot.recovery[0] != 0 && boot.recovery[0] != 255) { LOGE("Bad boot message\n\"%.20s\"\n", boot.recovery); } } // --- if that doesn't work, try the command file if (*argc <= 1) { FILE *fp = fopen_path(COMMAND_FILE, "r"); if (fp != NULL) { char *token; char *argv0 = (*argv)[0]; *argv = (char **) malloc(sizeof(char *) * MAX_ARGS); (*argv)[0] = argv0; // use the same program name char buf[MAX_ARG_LENGTH]; for (*argc = 1; *argc < MAX_ARGS; ++*argc) { if (!fgets(buf, sizeof(buf), fp)) break; token = strtok(buf, "\r\n"); if (token != NULL) { (*argv)[*argc] = strdup(token); // Strip newline. } else { --*argc; } } check_and_fclose(fp, COMMAND_FILE); LOGI("Got arguments from %s\n", COMMAND_FILE); } } // --> write the arguments we have back into the bootloader control block // always boot into recovery after this (until finish_recovery() is called) strlcpy(boot.command, "boot-recovery", sizeof(boot.command)); strlcpy(boot.recovery, "recovery\n", sizeof(boot.recovery)); int i; for (i = 1; i < *argc; ++i) { strlcat(boot.recovery, (*argv)[i], sizeof(boot.recovery)); strlcat(boot.recovery, "\n", sizeof(boot.recovery)); } set_bootloader_message(&boot); } static void set_sdcard_update_bootloader_message() { struct bootloader_message boot; memset(&boot, 0, sizeof(boot)); strlcpy(boot.command, "boot-recovery", sizeof(boot.command)); strlcpy(boot.recovery, "recovery\n", sizeof(boot.recovery)); set_bootloader_message(&boot); } // How much of the temp log we have copied to the copy in cache. static long tmplog_offset = 0; static void copy_log_file(const char* source, const char* destination, int append) { FILE *log = fopen_path(destination, append ? "a" : "w"); if (log == NULL) { LOGE("Can't open %s\n", destination); } else { FILE *tmplog = fopen(source, "r"); if (tmplog != NULL) { if (append) { fseek(tmplog, tmplog_offset, SEEK_SET); // Since last write } char buf[4096]; while (fgets(buf, sizeof(buf), tmplog)) fputs(buf, log); if (append) { tmplog_offset = ftell(tmplog); } check_and_fclose(tmplog, source); } check_and_fclose(log, destination); } } // Rename last_log -> last_log.1 -> last_log.2 -> ... -> last_log.$max // Overwrites any existing last_log.$max. static void rotate_last_logs(int max) { char oldfn[256]; char newfn[256]; int i; for (i = max-1; i >= 0; --i) { snprintf(oldfn, sizeof(oldfn), (i==0) ? LAST_LOG_FILE : (LAST_LOG_FILE ".%d"), i); snprintf(newfn, sizeof(newfn), LAST_LOG_FILE ".%d", i+1); // ignore errors rename(oldfn, newfn); } } static void copy_logs() { // Copy logs to cache so the system can find out what happened. copy_log_file(TEMPORARY_LOG_FILE, LOG_FILE, true); copy_log_file(TEMPORARY_LOG_FILE, LAST_LOG_FILE, false); copy_log_file(TEMPORARY_INSTALL_FILE, LAST_INSTALL_FILE, false); chmod(LOG_FILE, 0600); chown(LOG_FILE, 1000, 1000); // system user chmod(LAST_LOG_FILE, 0640); chmod(LAST_INSTALL_FILE, 0644); sync(); } // clear the recovery command and prepare to boot a (hopefully working) system, // copy our log file to cache as well (for the system to read), and // record any intent we were asked to communicate back to the system. // this function is idempotent: call it as many times as you like. static void finish_recovery(const char *send_intent) { // By this point, we're ready to return to the main system... if (send_intent != NULL) { FILE *fp = fopen_path(INTENT_FILE, "w"); if (fp == NULL) { LOGE("Can't open %s\n", INTENT_FILE); } else { fputs(send_intent, fp); check_and_fclose(fp, INTENT_FILE); } } // Save the locale to cache, so if recovery is next started up // without a --locale argument (eg, directly from the bootloader) // it will use the last-known locale. if (locale != NULL) { LOGI("Saving locale \"%s\"\n", locale); FILE* fp = fopen_path(LOCALE_FILE, "w"); fwrite(locale, 1, strlen(locale), fp); fflush(fp); fsync(fileno(fp)); check_and_fclose(fp, LOCALE_FILE); } copy_logs(); // Reset to normal system boot so recovery won't cycle indefinitely. struct bootloader_message boot; memset(&boot, 0, sizeof(boot)); set_bootloader_message(&boot); // Remove the command file, so recovery won't repeat indefinitely. if (ensure_path_mounted(COMMAND_FILE) != 0 || (unlink(COMMAND_FILE) && errno != ENOENT)) { LOGW("Can't unlink %s\n", COMMAND_FILE); } ensure_path_unmounted(CACHE_ROOT); sync(); // For good measure. } typedef struct _saved_log_file { char* name; struct stat st; unsigned char* data; struct _saved_log_file* next; } saved_log_file; static int erase_volume(const char *volume) { bool is_cache = (strcmp(volume, CACHE_ROOT) == 0); ui->SetBackground(RecoveryUI::ERASING); ui->SetProgressType(RecoveryUI::INDETERMINATE); saved_log_file* head = NULL; if (is_cache) { // If we're reformatting /cache, we load any // "/cache/recovery/last*" files into memory, so we can restore // them after the reformat. ensure_path_mounted(volume); DIR* d; struct dirent* de; d = opendir(CACHE_LOG_DIR); if (d) { char path[PATH_MAX]; strcpy(path, CACHE_LOG_DIR); strcat(path, "/"); int path_len = strlen(path); while ((de = readdir(d)) != NULL) { if (strncmp(de->d_name, "last", 4) == 0) { saved_log_file* p = (saved_log_file*) malloc(sizeof(saved_log_file)); strcpy(path+path_len, de->d_name); p->name = strdup(path); if (stat(path, &(p->st)) == 0) { // truncate files to 512kb if (p->st.st_size > (1 << 19)) { p->st.st_size = 1 << 19; } p->data = (unsigned char*) malloc(p->st.st_size); FILE* f = fopen(path, "rb"); fread(p->data, 1, p->st.st_size, f); fclose(f); p->next = head; head = p; } else { free(p); } } } closedir(d); } else { if (errno != ENOENT) { printf("opendir failed: %s\n", strerror(errno)); } } } ui->Print("Formatting %s...\n", volume); ensure_path_unmounted(volume); int result = format_volume(volume); if (is_cache) { while (head) { FILE* f = fopen_path(head->name, "wb"); if (f) { fwrite(head->data, 1, head->st.st_size, f); fclose(f); chmod(head->name, head->st.st_mode); chown(head->name, head->st.st_uid, head->st.st_gid); } free(head->name); free(head->data); saved_log_file* temp = head->next; free(head); head = temp; } // Any part of the log we'd copied to cache is now gone. // Reset the pointer so we copy from the beginning of the temp // log. tmplog_offset = 0; copy_logs(); } return result; } static char* copy_sideloaded_package(const char* original_path) { if (ensure_path_mounted(original_path) != 0) { LOGE("Can't mount %s\n", original_path); return NULL; } if (ensure_path_mounted(SIDELOAD_TEMP_DIR) != 0) { LOGE("Can't mount %s\n", SIDELOAD_TEMP_DIR); return NULL; } if (mkdir(SIDELOAD_TEMP_DIR, 0700) != 0) { if (errno != EEXIST) { LOGE("Can't mkdir %s (%s)\n", SIDELOAD_TEMP_DIR, strerror(errno)); return NULL; } } // verify that SIDELOAD_TEMP_DIR is exactly what we expect: a // directory, owned by root, readable and writable only by root. struct stat st; if (stat(SIDELOAD_TEMP_DIR, &st) != 0) { LOGE("failed to stat %s (%s)\n", SIDELOAD_TEMP_DIR, strerror(errno)); return NULL; } if (!S_ISDIR(st.st_mode)) { LOGE("%s isn't a directory\n", SIDELOAD_TEMP_DIR); return NULL; } if ((st.st_mode & 0777) != 0700) { LOGE("%s has perms %o\n", SIDELOAD_TEMP_DIR, st.st_mode); return NULL; } if (st.st_uid != 0) { LOGE("%s owned by %lu; not root\n", SIDELOAD_TEMP_DIR, st.st_uid); return NULL; } char copy_path[PATH_MAX]; strcpy(copy_path, SIDELOAD_TEMP_DIR); strcat(copy_path, "/package.zip"); char* buffer = (char*)malloc(BUFSIZ); if (buffer == NULL) { LOGE("Failed to allocate buffer\n"); return NULL; } size_t read; FILE* fin = fopen(original_path, "rb"); if (fin == NULL) { LOGE("Failed to open %s (%s)\n", original_path, strerror(errno)); return NULL; } FILE* fout = fopen(copy_path, "wb"); if (fout == NULL) { LOGE("Failed to open %s (%s)\n", copy_path, strerror(errno)); return NULL; } while ((read = fread(buffer, 1, BUFSIZ, fin)) > 0) { if (fwrite(buffer, 1, read, fout) != read) { LOGE("Short write of %s (%s)\n", copy_path, strerror(errno)); return NULL; } } free(buffer); if (fclose(fout) != 0) { LOGE("Failed to close %s (%s)\n", copy_path, strerror(errno)); return NULL; } if (fclose(fin) != 0) { LOGE("Failed to close %s (%s)\n", original_path, strerror(errno)); return NULL; } // "adb push" is happy to overwrite read-only files when it's // running as root, but we'll try anyway. if (chmod(copy_path, 0400) != 0) { LOGE("Failed to chmod %s (%s)\n", copy_path, strerror(errno)); return NULL; } return strdup(copy_path); } static const char** prepend_title(const char* const* headers) { // count the number of lines in our title, plus the // caller-provided headers. int count = 3; // our title has 3 lines const char* const* p; for (p = headers; *p; ++p, ++count); const char** new_headers = (const char**)malloc((count+1) * sizeof(char*)); const char** h = new_headers; *(h++) = "Android system recovery <" EXPAND(RECOVERY_API_VERSION) "e>"; *(h++) = recovery_version; *(h++) = ""; for (p = headers; *p; ++p, ++h) *h = *p; *h = NULL; return new_headers; } static int get_menu_selection(const char* const * headers, const char* const * items, int menu_only, int initial_selection, Device* device) { // throw away keys pressed previously, so user doesn't // accidentally trigger menu items. ui->FlushKeys(); ui->StartMenu(headers, items, initial_selection); int selected = initial_selection; int chosen_item = -1; while (chosen_item < 0) { int key = ui->WaitKey(); int visible = ui->IsTextVisible(); if (key == -1) { // ui_wait_key() timed out if (ui->WasTextEverVisible()) { continue; } else { LOGI("timed out waiting for key input; rebooting.\n"); ui->EndMenu(); return 0; // XXX fixme } } int action = device->HandleMenuKey(key, visible); if (action < 0) { switch (action) { case Device::kHighlightUp: --selected; selected = ui->SelectMenu(selected); break; case Device::kHighlightDown: ++selected; selected = ui->SelectMenu(selected); break; case Device::kInvokeItem: chosen_item = selected; break; case Device::kNoAction: break; } } else if (!menu_only) { chosen_item = action; } } ui->EndMenu(); return chosen_item; } static int compare_string(const void* a, const void* b) { return strcmp(*(const char**)a, *(const char**)b); } static int update_directory(const char* path, const char* unmount_when_done, int* wipe_cache, Device* device) { ensure_path_mounted(path); const char* MENU_HEADERS[] = { "Choose a package to install:", path, "", NULL }; DIR* d; struct dirent* de; d = opendir(path); if (d == NULL) { LOGE("error opening %s: %s\n", path, strerror(errno)); if (unmount_when_done != NULL) { ensure_path_unmounted(unmount_when_done); } return 0; } const char** headers = prepend_title(MENU_HEADERS); int d_size = 0; int d_alloc = 10; char** dirs = (char**)malloc(d_alloc * sizeof(char*)); int z_size = 1; int z_alloc = 10; char** zips = (char**)malloc(z_alloc * sizeof(char*)); zips[0] = strdup("../"); while ((de = readdir(d)) != NULL) { int name_len = strlen(de->d_name); if (de->d_type == DT_DIR) { // skip "." and ".." entries if (name_len == 1 && de->d_name[0] == '.') continue; if (name_len == 2 && de->d_name[0] == '.' && de->d_name[1] == '.') continue; if (d_size >= d_alloc) { d_alloc *= 2; dirs = (char**)realloc(dirs, d_alloc * sizeof(char*)); } dirs[d_size] = (char*)malloc(name_len + 2); strcpy(dirs[d_size], de->d_name); dirs[d_size][name_len] = '/'; dirs[d_size][name_len+1] = '\0'; ++d_size; } else if (de->d_type == DT_REG && name_len >= 4 && strncasecmp(de->d_name + (name_len-4), ".zip", 4) == 0) { if (z_size >= z_alloc) { z_alloc *= 2; zips = (char**)realloc(zips, z_alloc * sizeof(char*)); } zips[z_size++] = strdup(de->d_name); } } closedir(d); qsort(dirs, d_size, sizeof(char*), compare_string); qsort(zips, z_size, sizeof(char*), compare_string); // append dirs to the zips list if (d_size + z_size + 1 > z_alloc) { z_alloc = d_size + z_size + 1; zips = (char**)realloc(zips, z_alloc * sizeof(char*)); } memcpy(zips + z_size, dirs, d_size * sizeof(char*)); free(dirs); z_size += d_size; zips[z_size] = NULL; int result; int chosen_item = 0; do { chosen_item = get_menu_selection(headers, zips, 1, chosen_item, device); char* item = zips[chosen_item]; int item_len = strlen(item); if (chosen_item == 0) { // item 0 is always "../" // go up but continue browsing (if the caller is update_directory) result = -1; break; } else if (item[item_len-1] == '/') { // recurse down into a subdirectory char new_path[PATH_MAX]; strlcpy(new_path, path, PATH_MAX); strlcat(new_path, "/", PATH_MAX); strlcat(new_path, item, PATH_MAX); new_path[strlen(new_path)-1] = '\0'; // truncate the trailing '/' result = update_directory(new_path, unmount_when_done, wipe_cache, device); if (result >= 0) break; } else { // selected a zip file: attempt to install it, and return // the status to the caller. char new_path[PATH_MAX]; strlcpy(new_path, path, PATH_MAX); strlcat(new_path, "/", PATH_MAX); strlcat(new_path, item, PATH_MAX); ui->Print("\n-- Install %s ...\n", path); set_sdcard_update_bootloader_message(); char* copy = copy_sideloaded_package(new_path); if (unmount_when_done != NULL) { ensure_path_unmounted(unmount_when_done); } if (copy) { result = install_package(copy, wipe_cache, TEMPORARY_INSTALL_FILE); free(copy); } else { result = INSTALL_ERROR; } break; } } while (true); int i; for (i = 0; i < z_size; ++i) free(zips[i]); free(zips); free(headers); if (unmount_when_done != NULL) { ensure_path_unmounted(unmount_when_done); } return result; } static void wipe_data(int confirm, Device* device) { if (confirm) { static const char** title_headers = NULL; if (title_headers == NULL) { const char* headers[] = { "Confirm wipe of all user data?", " THIS CAN NOT BE UNDONE.", "", NULL }; title_headers = prepend_title((const char**)headers); } const char* items[] = { " No", " No", " No", " No", " No", " No", " No", " Yes -- delete all user data", // [7] " No", " No", " No", NULL }; int chosen_item = get_menu_selection(title_headers, items, 1, 0, device); if (chosen_item != 7) { return; } } ui->Print("\n-- Wiping data...\n"); device->WipeData(); erase_volume("/data"); erase_volume("/cache"); ui->Print("Data wipe complete.\n"); } // Return REBOOT, SHUTDOWN, or REBOOT_BOOTLOADER. Returning NO_ACTION // means to take the default, which is to reboot or shutdown depending // on if the --shutdown_after flag was passed to recovery. static Device::BuiltinAction prompt_and_wait(Device* device, int status) { const char* const* headers = prepend_title(device->GetMenuHeaders()); for (;;) { finish_recovery(NULL); switch (status) { case INSTALL_SUCCESS: case INSTALL_NONE: ui->SetBackground(RecoveryUI::NO_COMMAND); break; case INSTALL_ERROR: case INSTALL_CORRUPT: ui->SetBackground(RecoveryUI::ERROR); break; } ui->SetProgressType(RecoveryUI::EMPTY); int chosen_item = get_menu_selection(headers, device->GetMenuItems(), 0, 0, device); // device-specific code may take some action here. It may // return one of the core actions handled in the switch // statement below. Device::BuiltinAction chosen_action = device->InvokeMenuItem(chosen_item); int wipe_cache; switch (chosen_action) { case Device::NO_ACTION: break; case Device::REBOOT: case Device::SHUTDOWN: case Device::REBOOT_BOOTLOADER: return chosen_action; case Device::WIPE_DATA: wipe_data(ui->IsTextVisible(), device); if (!ui->IsTextVisible()) return Device::NO_ACTION; break; case Device::WIPE_CACHE: ui->Print("\n-- Wiping cache...\n"); erase_volume("/cache"); ui->Print("Cache wipe complete.\n"); if (!ui->IsTextVisible()) return Device::NO_ACTION; break; case Device::APPLY_EXT: status = update_directory(SDCARD_ROOT, SDCARD_ROOT, &wipe_cache, device); if (status == INSTALL_SUCCESS && wipe_cache) { ui->Print("\n-- Wiping cache (at package request)...\n"); if (erase_volume("/cache")) { ui->Print("Cache wipe failed.\n"); } else { ui->Print("Cache wipe complete.\n"); } } if (status >= 0) { if (status != INSTALL_SUCCESS) { ui->SetBackground(RecoveryUI::ERROR); ui->Print("Installation aborted.\n"); } else if (!ui->IsTextVisible()) { return Device::NO_ACTION; // reboot if logs aren't visible } else { ui->Print("\nInstall from sdcard complete.\n"); } } break; case Device::APPLY_CACHE: // Don't unmount cache at the end of this. status = update_directory(CACHE_ROOT, NULL, &wipe_cache, device); if (status == INSTALL_SUCCESS && wipe_cache) { ui->Print("\n-- Wiping cache (at package request)...\n"); if (erase_volume("/cache")) { ui->Print("Cache wipe failed.\n"); } else { ui->Print("Cache wipe complete.\n"); } } if (status >= 0) { if (status != INSTALL_SUCCESS) { ui->SetBackground(RecoveryUI::ERROR); ui->Print("Installation aborted.\n"); } else if (!ui->IsTextVisible()) { return Device::NO_ACTION; // reboot if logs aren't visible } else { ui->Print("\nInstall from cache complete.\n"); } } break; case Device::APPLY_ADB_SIDELOAD: status = apply_from_adb(ui, &wipe_cache, TEMPORARY_INSTALL_FILE); if (status >= 0) { if (status != INSTALL_SUCCESS) { ui->SetBackground(RecoveryUI::ERROR); ui->Print("Installation aborted.\n"); copy_logs(); } else if (!ui->IsTextVisible()) { return Device::NO_ACTION; // reboot if logs aren't visible } else { ui->Print("\nInstall from ADB complete.\n"); } } break; } } } static void print_property(const char *key, const char *name, void *cookie) { printf("%s=%s\n", key, name); } static void load_locale_from_cache() { FILE* fp = fopen_path(LOCALE_FILE, "r"); char buffer[80]; if (fp != NULL) { fgets(buffer, sizeof(buffer), fp); int j = 0; unsigned int i; for (i = 0; i < sizeof(buffer) && buffer[i]; ++i) { if (!isspace(buffer[i])) { buffer[j++] = buffer[i]; } } buffer[j] = 0; locale = strdup(buffer); check_and_fclose(fp, LOCALE_FILE); } } static RecoveryUI* gCurrentUI = NULL; void ui_print(const char* format, ...) { char buffer[256]; va_list ap; va_start(ap, format); vsnprintf(buffer, sizeof(buffer), format, ap); va_end(ap); if (gCurrentUI != NULL) { gCurrentUI->Print("%s", buffer); } else { fputs(buffer, stdout); } } int main(int argc, char **argv) { time_t start = time(NULL); // If these fail, there's not really anywhere to complain... freopen(TEMPORARY_LOG_FILE, "a", stdout); setbuf(stdout, NULL); freopen(TEMPORARY_LOG_FILE, "a", stderr); setbuf(stderr, NULL); // If this binary is started with the single argument "--adbd", // instead of being the normal recovery binary, it turns into kind // of a stripped-down version of adbd that only supports the // 'sideload' command. Note this must be a real argument, not // anything in the command file or bootloader control block; the // only way recovery should be run with this argument is when it // starts a copy of itself from the apply_from_adb() function. if (argc == 2 && strcmp(argv[1], "--adbd") == 0) { adb_main(); return 0; } printf("Starting recovery (pid %d) on %s", getpid(), ctime(&start)); load_volume_table(); ensure_path_mounted(LAST_LOG_FILE); rotate_last_logs(10); get_args(&argc, &argv); const char *send_intent = NULL; const char *update_package = NULL; int wipe_data = 0, wipe_cache = 0, show_text = 0; bool just_exit = false; bool shutdown_after = false; int arg; while ((arg = getopt_long(argc, argv, "", OPTIONS, NULL)) != -1) { switch (arg) { case 's': send_intent = optarg; break; case 'u': update_package = optarg; break; case 'w': wipe_data = wipe_cache = 1; break; case 'c': wipe_cache = 1; break; case 't': show_text = 1; break; case 'x': just_exit = true; break; case 'l': locale = optarg; break; case 'g': { if (stage == NULL || *stage == '\0') { char buffer[20] = "1/"; strncat(buffer, optarg, sizeof(buffer)-3); stage = strdup(buffer); } break; } case 'p': shutdown_after = true; break; case '?': LOGE("Invalid command argument\n"); continue; } } if (locale == NULL) { load_locale_from_cache(); } printf("locale is [%s]\n", locale); printf("stage is [%s]\n", stage); Device* device = make_device(); ui = device->GetUI(); gCurrentUI = ui; ui->SetLocale(locale); ui->Init(); int st_cur, st_max; if (stage != NULL && sscanf(stage, "%d/%d", &st_cur, &st_max) == 2) { ui->SetStage(st_cur, st_max); } ui->SetBackground(RecoveryUI::NONE); if (show_text) ui->ShowText(true); struct selinux_opt seopts[] = { { SELABEL_OPT_PATH, "/file_contexts" } }; sehandle = selabel_open(SELABEL_CTX_FILE, seopts, 1); if (!sehandle) { ui->Print("Warning: No file_contexts\n"); } device->StartRecovery(); printf("Command:"); for (arg = 0; arg < argc; arg++) { printf(" \"%s\"", argv[arg]); } printf("\n"); if (update_package) { // For backwards compatibility on the cache partition only, if // we're given an old 'root' path "CACHE:foo", change it to // "/cache/foo". if (strncmp(update_package, "CACHE:", 6) == 0) { int len = strlen(update_package) + 10; char* modified_path = (char*)malloc(len); strlcpy(modified_path, "/cache/", len); strlcat(modified_path, update_package+6, len); printf("(replacing path \"%s\" with \"%s\")\n", update_package, modified_path); update_package = modified_path; } } printf("\n"); property_list(print_property, NULL); property_get("ro.build.display.id", recovery_version, ""); printf("\n"); int status = INSTALL_SUCCESS; if (update_package != NULL) { status = install_package(update_package, &wipe_cache, TEMPORARY_INSTALL_FILE); if (status == INSTALL_SUCCESS && wipe_cache) { if (erase_volume("/cache")) { LOGE("Cache wipe (requested by package) failed."); } } if (status != INSTALL_SUCCESS) { ui->Print("Installation aborted.\n"); // If this is an eng or userdebug build, then automatically // turn the text display on if the script fails so the error // message is visible. char buffer[PROPERTY_VALUE_MAX+1]; property_get("ro.build.fingerprint", buffer, ""); if (strstr(buffer, ":userdebug/") || strstr(buffer, ":eng/")) { ui->ShowText(true); } } } else if (wipe_data) { if (device->WipeData()) status = INSTALL_ERROR; if (erase_volume("/data")) status = INSTALL_ERROR; if (wipe_cache && erase_volume("/cache")) status = INSTALL_ERROR; if (status != INSTALL_SUCCESS) ui->Print("Data wipe failed.\n"); } else if (wipe_cache) { if (wipe_cache && erase_volume("/cache")) status = INSTALL_ERROR; if (status != INSTALL_SUCCESS) ui->Print("Cache wipe failed.\n"); } else if (!just_exit) { status = INSTALL_NONE; // No command specified ui->SetBackground(RecoveryUI::NO_COMMAND); } if (status == INSTALL_ERROR || status == INSTALL_CORRUPT) { copy_logs(); ui->SetBackground(RecoveryUI::ERROR); } Device::BuiltinAction after = shutdown_after ? Device::SHUTDOWN : Device::REBOOT; if (status != INSTALL_SUCCESS || ui->IsTextVisible()) { Device::BuiltinAction temp = prompt_and_wait(device, status); if (temp != Device::NO_ACTION) after = temp; } // Save logs and clean up before rebooting or shutting down. finish_recovery(send_intent); switch (after) { case Device::SHUTDOWN: ui->Print("Shutting down...\n"); property_set(ANDROID_RB_PROPERTY, "shutdown,"); break; case Device::REBOOT_BOOTLOADER: ui->Print("Rebooting to bootloader...\n"); property_set(ANDROID_RB_PROPERTY, "reboot,bootloader"); break; default: ui->Print("Rebooting...\n"); property_set(ANDROID_RB_PROPERTY, "reboot,"); break; } sleep(5); // should reboot before this finishes return EXIT_SUCCESS; }