672 lines
23 KiB
C
672 lines
23 KiB
C
/*
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* Copyright (C) 2007 The Android Open Source Project
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* Copyright (c) 2010, Code Aurora Forum. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <limits.h>
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#include <linux/input.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/reboot.h>
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include "bootloader.h"
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#include "common.h"
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#include "cutils/properties.h"
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#include "install.h"
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#include "minui/minui.h"
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#include "minzip/DirUtil.h"
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#include "roots.h"
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#include "recovery_ui.h"
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#include "extendedcommands.h"
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#include "commands.h"
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static const struct option OPTIONS[] = {
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{ "send_intent", required_argument, NULL, 's' },
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{ "update_package", required_argument, NULL, 'u' },
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{ "wipe_data", no_argument, NULL, 'w' },
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{ "wipe_cache", no_argument, NULL, 'c' },
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{ NULL, 0, NULL, 0 },
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};
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static int allow_display_toggle = 1;
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static const char *COMMAND_FILE = "CACHE:recovery/command";
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static const char *INTENT_FILE = "CACHE:recovery/intent";
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static const char *LOG_FILE = "CACHE:recovery/log";
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static const char *SDCARD_PACKAGE_FILE = "SDCARD:update.zip";
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static const char *TEMPORARY_LOG_FILE = "/tmp/recovery.log";
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/*
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* The recovery tool communicates with the main system through /cache files.
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* /cache/recovery/command - INPUT - command line for tool, one arg per line
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* /cache/recovery/log - OUTPUT - combined log file from recovery run(s)
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* /cache/recovery/intent - OUTPUT - intent that was passed in
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*
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* The arguments which may be supplied in the recovery.command file:
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* --send_intent=anystring - write the text out to recovery.intent
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* --update_package=root:path - verify install an OTA package file
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* --wipe_data - erase user data (and cache), then reboot
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* --wipe_cache - wipe cache (but not user data), then reboot
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* --set_encrypted_filesystem=on|off - enables / diasables encrypted fs
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*
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* After completing, we remove /cache/recovery/command and reboot.
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* Arguments may also be supplied in the bootloader control block (BCB).
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* These important scenarios must be safely restartable at any point:
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*
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* FACTORY RESET
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* 1. user selects "factory reset"
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* 2. main system writes "--wipe_data" to /cache/recovery/command
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* 3. main system reboots into recovery
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* 4. get_args() writes BCB with "boot-recovery" and "--wipe_data"
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* -- after this, rebooting will restart the erase --
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* 5. erase_root() reformats /data
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* 6. erase_root() reformats /cache
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* 7. finish_recovery() erases BCB
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* -- after this, rebooting will restart the main system --
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* 8. main() calls reboot() to boot main system
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*
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* OTA INSTALL
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* 1. main system downloads OTA package to /cache/some-filename.zip
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* 2. main system writes "--update_package=CACHE:some-filename.zip"
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* 3. main system reboots into recovery
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* 4. get_args() writes BCB with "boot-recovery" and "--update_package=..."
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* -- after this, rebooting will attempt to reinstall the update --
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* 5. install_package() attempts to install the update
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* NOTE: the package install must itself be restartable from any point
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* 6. finish_recovery() erases BCB
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* -- after this, rebooting will (try to) restart the main system --
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* 7. ** if install failed **
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* 7a. prompt_and_wait() shows an error icon and waits for the user
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* 7b; the user reboots (pulling the battery, etc) into the main system
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* 8. main() calls maybe_install_firmware_update()
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* ** if the update contained radio/hboot firmware **:
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* 8a. m_i_f_u() writes BCB with "boot-recovery" and "--wipe_cache"
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* -- after this, rebooting will reformat cache & restart main system --
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* 8b. m_i_f_u() writes firmware image into raw cache partition
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* 8c. m_i_f_u() writes BCB with "update-radio/hboot" and "--wipe_cache"
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* -- after this, rebooting will attempt to reinstall firmware --
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* 8d. bootloader tries to flash firmware
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* 8e. bootloader writes BCB with "boot-recovery" (keeping "--wipe_cache")
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* -- after this, rebooting will reformat cache & restart main system --
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* 8f. erase_root() reformats /cache
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* 8g. finish_recovery() erases BCB
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* -- after this, rebooting will (try to) restart the main system --
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* 9. main() calls reboot() to boot main system
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*
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* ENCRYPTED FILE SYSTEMS ENABLE/DISABLE
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* 1. user selects "enable encrypted file systems"
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* 2. main system writes "--set_encrypted_filesystem=on|off" to
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* /cache/recovery/command
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* 3. main system reboots into recovery
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* 4. get_args() writes BCB with "boot-recovery" and
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* "--set_encrypted_filesystems=on|off"
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* -- after this, rebooting will restart the transition --
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* 5. read_encrypted_fs_info() retrieves encrypted file systems settings from /data
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* Settings include: property to specify the Encrypted FS istatus and
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* FS encryption key if enabled (not yet implemented)
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* 6. erase_root() reformats /data
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* 7. erase_root() reformats /cache
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* 8. restore_encrypted_fs_info() writes required encrypted file systems settings to /data
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* Settings include: property to specify the Encrypted FS status and
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* FS encryption key if enabled (not yet implemented)
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* 9. finish_recovery() erases BCB
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* -- after this, rebooting will restart the main system --
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* 10. main() calls reboot() to boot main system
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*/
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static const int MAX_ARG_LENGTH = 4096;
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static const int MAX_ARGS = 100;
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// open a file given in root:path format, mounting partitions as necessary
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static FILE*
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fopen_root_path(const char *root_path, const char *mode) {
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if (ensure_root_path_mounted(root_path) != 0) {
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LOGE("Can't mount %s\n", root_path);
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return NULL;
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}
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char path[PATH_MAX] = "";
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if (translate_root_path(root_path, path, sizeof(path)) == NULL) {
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LOGE("Bad path %s\n", root_path);
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return NULL;
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}
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// When writing, try to create the containing directory, if necessary.
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// Use generous permissions, the system (init.rc) will reset them.
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if (strchr("wa", mode[0])) dirCreateHierarchy(path, 0777, NULL, 1);
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FILE *fp = fopen(path, mode);
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if (fp == NULL && root_path != COMMAND_FILE) LOGE("Can't open %s\n", path);
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return fp;
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}
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// close a file, log an error if the error indicator is set
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static void
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check_and_fclose(FILE *fp, const char *name) {
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fflush(fp);
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if (ferror(fp)) LOGE("Error in %s\n(%s)\n", name, strerror(errno));
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fclose(fp);
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}
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// command line args come from, in decreasing precedence:
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// - the actual command line
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// - the bootloader control block (one per line, after "recovery")
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// - the contents of COMMAND_FILE (one per line)
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static void
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get_args(int *argc, char ***argv) {
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struct bootloader_message boot;
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memset(&boot, 0, sizeof(boot));
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#ifndef BOARD_HAS_NO_MISC_PARTITION
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get_bootloader_message(&boot); // this may fail, leaving a zeroed structure
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#endif
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if (boot.command[0] != 0 && boot.command[0] != 255) {
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LOGI("Boot command: %.*s\n", sizeof(boot.command), boot.command);
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}
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if (boot.status[0] != 0 && boot.status[0] != 255) {
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LOGI("Boot status: %.*s\n", sizeof(boot.status), boot.status);
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}
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struct stat file_info;
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// --- if arguments weren't supplied, look in the bootloader control block
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if (*argc <= 1 && 0 != stat("/tmp/.ignorebootmessage", &file_info)) {
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boot.recovery[sizeof(boot.recovery) - 1] = '\0'; // Ensure termination
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const char *arg = strtok(boot.recovery, "\n");
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if (arg != NULL && !strcmp(arg, "recovery")) {
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*argv = (char **) malloc(sizeof(char *) * MAX_ARGS);
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(*argv)[0] = strdup(arg);
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for (*argc = 1; *argc < MAX_ARGS; ++*argc) {
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if ((arg = strtok(NULL, "\n")) == NULL) break;
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(*argv)[*argc] = strdup(arg);
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}
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LOGI("Got arguments from boot message\n");
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} else if (boot.recovery[0] != 0 && boot.recovery[0] != 255) {
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LOGE("Bad boot message\n\"%.20s\"\n", boot.recovery);
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}
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}
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// --- if that doesn't work, try the command file
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if (*argc <= 1) {
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FILE *fp = fopen_root_path(COMMAND_FILE, "r");
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if (fp != NULL) {
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char *argv0 = (*argv)[0];
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*argv = (char **) malloc(sizeof(char *) * MAX_ARGS);
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(*argv)[0] = argv0; // use the same program name
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char buf[MAX_ARG_LENGTH];
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for (*argc = 1; *argc < MAX_ARGS; ++*argc) {
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if (!fgets(buf, sizeof(buf), fp)) break;
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(*argv)[*argc] = strdup(strtok(buf, "\r\n")); // Strip newline.
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}
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check_and_fclose(fp, COMMAND_FILE);
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LOGI("Got arguments from %s\n", COMMAND_FILE);
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}
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}
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// --> write the arguments we have back into the bootloader control block
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// always boot into recovery after this (until finish_recovery() is called)
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strlcpy(boot.command, "boot-recovery", sizeof(boot.command));
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strlcpy(boot.recovery, "recovery\n", sizeof(boot.recovery));
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int i;
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for (i = 1; i < *argc; ++i) {
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strlcat(boot.recovery, (*argv)[i], sizeof(boot.recovery));
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strlcat(boot.recovery, "\n", sizeof(boot.recovery));
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}
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#ifndef BOARD_HAS_NO_MISC_PARTITION
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set_bootloader_message(&boot);
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#endif
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}
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#ifndef BOARD_HAS_NO_MISC_PARTITION
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void
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set_sdcard_update_bootloader_message() {
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struct bootloader_message boot;
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memset(&boot, 0, sizeof(boot));
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strlcpy(boot.command, "boot-recovery", sizeof(boot.command));
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strlcpy(boot.recovery, "recovery\n", sizeof(boot.recovery));
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set_bootloader_message(&boot);
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}
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#endif
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// clear the recovery command and prepare to boot a (hopefully working) system,
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// copy our log file to cache as well (for the system to read), and
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// record any intent we were asked to communicate back to the system.
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// this function is idempotent: call it as many times as you like.
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static void
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finish_recovery(const char *send_intent) {
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// By this point, we're ready to return to the main system...
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if (send_intent != NULL) {
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FILE *fp = fopen_root_path(INTENT_FILE, "w");
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if (fp == NULL) {
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LOGE("Can't open %s\n", INTENT_FILE);
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} else {
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fputs(send_intent, fp);
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check_and_fclose(fp, INTENT_FILE);
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}
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}
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// Copy logs to cache so the system can find out what happened.
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FILE *log = fopen_root_path(LOG_FILE, "a");
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if (log == NULL) {
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LOGE("Can't open %s\n", LOG_FILE);
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} else {
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FILE *tmplog = fopen(TEMPORARY_LOG_FILE, "r");
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if (tmplog == NULL) {
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LOGE("Can't open %s\n", TEMPORARY_LOG_FILE);
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} else {
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static long tmplog_offset = 0;
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fseek(tmplog, tmplog_offset, SEEK_SET); // Since last write
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char buf[4096];
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while (fgets(buf, sizeof(buf), tmplog)) fputs(buf, log);
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tmplog_offset = ftell(tmplog);
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check_and_fclose(tmplog, TEMPORARY_LOG_FILE);
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}
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check_and_fclose(log, LOG_FILE);
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}
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#ifndef BOARD_HAS_NO_MISC_PARTITION
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// Reset to mormal system boot so recovery won't cycle indefinitely.
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struct bootloader_message boot;
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memset(&boot, 0, sizeof(boot));
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set_bootloader_message(&boot);
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#endif
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// Remove the command file, so recovery won't repeat indefinitely.
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char path[PATH_MAX] = "";
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if (ensure_root_path_mounted(COMMAND_FILE) != 0 ||
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translate_root_path(COMMAND_FILE, path, sizeof(path)) == NULL ||
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(unlink(path) && errno != ENOENT)) {
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LOGW("Can't unlink %s\n", COMMAND_FILE);
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}
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sync(); // For good measure.
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}
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static int
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erase_root(const char *root) {
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ui_set_background(BACKGROUND_ICON_INSTALLING);
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ui_show_indeterminate_progress();
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ui_print("Formatting %s...\n", root);
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return format_root_device(root);
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}
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static char**
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prepend_title(char** headers) {
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char* title[] = { EXPAND(RECOVERY_VERSION),
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"",
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NULL };
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// count the number of lines in our title, plus the
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// caller-provided headers.
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int count = 0;
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char** p;
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for (p = title; *p; ++p, ++count);
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for (p = headers; *p; ++p, ++count);
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char** new_headers = malloc((count+1) * sizeof(char*));
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char** h = new_headers;
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for (p = title; *p; ++p, ++h) *h = *p;
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for (p = headers; *p; ++p, ++h) *h = *p;
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*h = NULL;
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return new_headers;
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}
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int
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get_menu_selection(char** headers, char** items, int menu_only) {
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// throw away keys pressed previously, so user doesn't
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// accidentally trigger menu items.
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ui_clear_key_queue();
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int item_count = ui_start_menu(headers, items);
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int selected = 0;
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int chosen_item = -1;
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// Some users with dead enter keys need a way to turn on power to select.
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// Jiggering across the wrapping menu is one "secret" way to enable it.
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// We can't rely on /cache or /sdcard since they may not be available.
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int wrap_count = 0;
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while (chosen_item < 0 && chosen_item != GO_BACK) {
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int key = ui_wait_key();
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int visible = ui_text_visible();
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int action = device_handle_key(key, visible);
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int old_selected = selected;
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if (action < 0) {
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switch (action) {
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case HIGHLIGHT_UP:
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--selected;
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selected = ui_menu_select(selected);
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break;
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case HIGHLIGHT_DOWN:
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++selected;
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selected = ui_menu_select(selected);
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break;
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case SELECT_ITEM:
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chosen_item = selected;
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if (ui_get_showing_back_button()) {
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if (chosen_item == item_count) {
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chosen_item = GO_BACK;
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}
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}
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break;
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case NO_ACTION:
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break;
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case GO_BACK:
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chosen_item = GO_BACK;
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break;
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}
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} else if (!menu_only) {
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chosen_item = action;
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}
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if (abs(selected - old_selected) > 1) {
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wrap_count++;
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if (wrap_count == 3) {
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wrap_count = 0;
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if (ui_get_showing_back_button()) {
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ui_print("Back menu button disabled.\n");
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ui_set_showing_back_button(0);
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}
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else {
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ui_print("Back menu button enabled.\n");
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ui_set_showing_back_button(1);
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}
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}
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}
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}
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ui_end_menu();
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ui_clear_key_queue();
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return chosen_item;
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}
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static void
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wipe_data(int confirm) {
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if (confirm) {
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static char** title_headers = NULL;
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if (title_headers == NULL) {
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char* headers[] = { "Confirm wipe of all user data?",
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" THIS CAN NOT BE UNDONE.",
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"",
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NULL };
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title_headers = prepend_title(headers);
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}
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char* items[] = { " No",
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" No",
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" No",
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" No",
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" No",
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" No",
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" No",
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" Yes -- delete all user data", // [7]
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" No",
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" No",
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" No",
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NULL };
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int chosen_item = get_menu_selection(title_headers, items, 1);
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if (chosen_item != 7) {
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return;
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}
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}
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ui_print("\n-- Wiping data...\n");
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device_wipe_data();
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erase_root("DATA:");
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#ifdef HAS_DATADATA
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erase_root("DATADATA:");
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#endif
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erase_root("CACHE:");
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erase_root("SDEXT:");
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erase_root("SDCARD:/.android_secure");
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ui_print("Data wipe complete.\n");
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}
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static void
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prompt_and_wait() {
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char** headers = prepend_title(MENU_HEADERS);
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for (;;) {
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finish_recovery(NULL);
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ui_reset_progress();
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allow_display_toggle = 1;
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int chosen_item = get_menu_selection(headers, MENU_ITEMS, 0);
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allow_display_toggle = 0;
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// device-specific code may take some action here. It may
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// return one of the core actions handled in the switch
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// statement below.
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chosen_item = device_perform_action(chosen_item);
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switch (chosen_item) {
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case ITEM_REBOOT:
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return;
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case ITEM_WIPE_DATA:
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wipe_data(ui_text_visible());
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if (!ui_text_visible()) return;
|
|
break;
|
|
|
|
case ITEM_WIPE_CACHE:
|
|
if (confirm_selection("Confirm wipe?", "Yes - Wipe Cache"))
|
|
{
|
|
ui_print("\n-- Wiping cache...\n");
|
|
erase_root("CACHE:");
|
|
ui_print("Cache wipe complete.\n");
|
|
if (!ui_text_visible()) return;
|
|
}
|
|
break;
|
|
|
|
case ITEM_APPLY_SDCARD:
|
|
if (confirm_selection("Confirm install?", "Yes - Install /sdcard/update.zip"))
|
|
{
|
|
ui_print("\n-- Install from sdcard...\n");
|
|
#ifndef BOARD_HAS_NO_MISC_PARTITION
|
|
set_sdcard_update_bootloader_message();
|
|
#endif
|
|
int status = install_package(SDCARD_PACKAGE_FILE);
|
|
if (status != INSTALL_SUCCESS) {
|
|
ui_set_background(BACKGROUND_ICON_ERROR);
|
|
ui_print("Installation aborted.\n");
|
|
} else if (!ui_text_visible()) {
|
|
return; // reboot if logs aren't visible
|
|
} else {
|
|
#ifndef BOARD_HAS_NO_MISC_PARTITION
|
|
if (firmware_update_pending()) {
|
|
ui_print("\nReboot via menu to complete\n"
|
|
"installation.\n");
|
|
} else {
|
|
ui_print("\nInstall from sdcard complete.\n");
|
|
}
|
|
#else
|
|
ui_print("\nInstall from sdcard complete.\n");
|
|
#endif
|
|
}
|
|
}
|
|
break;
|
|
case ITEM_INSTALL_ZIP:
|
|
show_install_update_menu();
|
|
break;
|
|
case ITEM_NANDROID:
|
|
show_nandroid_menu();
|
|
break;
|
|
case ITEM_PARTITION:
|
|
show_partition_menu();
|
|
break;
|
|
case ITEM_ADVANCED:
|
|
show_advanced_menu();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
print_property(const char *key, const char *name, void *cookie) {
|
|
fprintf(stderr, "%s=%s\n", key, name);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv) {
|
|
if (strstr(argv[0], "recovery") == NULL)
|
|
{
|
|
if (strstr(argv[0], "flash_image") != NULL)
|
|
return flash_image_main(argc, argv);
|
|
if (strstr(argv[0], "dump_image") != NULL)
|
|
return dump_image_main(argc, argv);
|
|
if (strstr(argv[0], "erase_image") != NULL)
|
|
return erase_image_main(argc, argv);
|
|
if (strstr(argv[0], "mkyaffs2image") != NULL)
|
|
return mkyaffs2image_main(argc, argv);
|
|
if (strstr(argv[0], "unyaffs") != NULL)
|
|
return unyaffs_main(argc, argv);
|
|
if (strstr(argv[0], "amend"))
|
|
return amend_main(argc, argv);
|
|
if (strstr(argv[0], "nandroid"))
|
|
return nandroid_main(argc, argv);
|
|
if (strstr(argv[0], "reboot"))
|
|
return reboot_main(argc, argv);
|
|
if (strstr(argv[0], "setprop"))
|
|
return setprop_main(argc, argv);
|
|
return busybox_driver(argc, argv);
|
|
}
|
|
__system("/sbin/postrecoveryboot.sh");
|
|
create_fstab();
|
|
|
|
int is_user_initiated_recovery = 0;
|
|
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);
|
|
fprintf(stderr, "Starting recovery on %s", ctime(&start));
|
|
|
|
ui_init();
|
|
ui_print(EXPAND(RECOVERY_VERSION)"\n");
|
|
get_args(&argc, &argv);
|
|
|
|
int previous_runs = 0;
|
|
const char *send_intent = NULL;
|
|
const char *update_package = NULL;
|
|
int wipe_data = 0, wipe_cache = 0;
|
|
|
|
int arg;
|
|
while ((arg = getopt_long(argc, argv, "", OPTIONS, NULL)) != -1) {
|
|
switch (arg) {
|
|
case 'p': previous_runs = atoi(optarg); break;
|
|
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 '?':
|
|
LOGE("Invalid command argument\n");
|
|
continue;
|
|
}
|
|
}
|
|
|
|
device_recovery_start();
|
|
|
|
fprintf(stderr, "Command:");
|
|
for (arg = 0; arg < argc; arg++) {
|
|
fprintf(stderr, " \"%s\"", argv[arg]);
|
|
}
|
|
fprintf(stderr, "\n\n");
|
|
|
|
property_list(print_property, NULL);
|
|
fprintf(stderr, "\n");
|
|
|
|
int status = INSTALL_SUCCESS;
|
|
|
|
RecoveryCommandContext ctx = { NULL };
|
|
if (register_update_commands(&ctx)) {
|
|
LOGE("Can't install update commands\n");
|
|
}
|
|
|
|
if (update_package != NULL) {
|
|
if (wipe_data && erase_root("DATA:")) status = INSTALL_ERROR;
|
|
status = install_package(update_package);
|
|
if (status != INSTALL_SUCCESS) ui_print("Installation aborted.\n");
|
|
} else if (wipe_data) {
|
|
if (device_wipe_data()) status = INSTALL_ERROR;
|
|
if (erase_root("DATA:")) status = INSTALL_ERROR;
|
|
if (wipe_cache && erase_root("CACHE:")) status = INSTALL_ERROR;
|
|
if (status != INSTALL_SUCCESS) ui_print("Data wipe failed.\n");
|
|
} else if (wipe_cache) {
|
|
if (wipe_cache && erase_root("CACHE:")) status = INSTALL_ERROR;
|
|
if (status != INSTALL_SUCCESS) ui_print("Cache wipe failed.\n");
|
|
} else {
|
|
LOGI("Checking for extendedcommand...\n");
|
|
status = INSTALL_ERROR; // No command specified
|
|
// we are starting up in user initiated recovery here
|
|
// let's set up some default options
|
|
signature_check_enabled = 0;
|
|
script_assert_enabled = 0;
|
|
is_user_initiated_recovery = 1;
|
|
ui_set_show_text(1);
|
|
|
|
if (extendedcommand_file_exists()) {
|
|
LOGI("Running extendedcommand...\n");
|
|
int ret;
|
|
if (0 == (ret = run_and_remove_extendedcommand())) {
|
|
status = INSTALL_SUCCESS;
|
|
ui_set_show_text(0);
|
|
}
|
|
else {
|
|
handle_failure(ret);
|
|
}
|
|
} else {
|
|
LOGI("Skipping execution of extendedcommand, file not found...\n");
|
|
}
|
|
}
|
|
|
|
if (status != INSTALL_SUCCESS && !is_user_initiated_recovery) ui_set_background(BACKGROUND_ICON_ERROR);
|
|
if (status != INSTALL_SUCCESS || ui_text_visible()) prompt_and_wait();
|
|
|
|
#ifndef BOARD_HAS_NO_MISC_PARTITION
|
|
// If there is a radio image pending, reboot now to install it.
|
|
maybe_install_firmware_update(send_intent);
|
|
#endif
|
|
|
|
// Otherwise, get ready to boot the main system...
|
|
finish_recovery(send_intent);
|
|
ui_print("Rebooting...\n");
|
|
sync();
|
|
reboot(RB_AUTOBOOT);
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
int get_allow_toggle_display() {
|
|
return allow_display_toggle;
|
|
}
|