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M7350/bootable/recovery/recovery.c
T f9cc65cfda M7350v1_en_gpl
2024-09-09 08:52:07 +00:00

1323 lines
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/*
* 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 <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <limits.h>
#include <linux/input.h>
#include <linux/reboot.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <dirent.h>
#include <syscall.h>
#include "bootloader.h"
#include "common.h"
#include "cutils/properties.h"
#include "install.h"
#include "minui/minui.h"
#include "minzip/DirUtil.h"
#include "roots.h"
#include "recovery_ui.h"
#include "deltaupdate_config.h"
static const deltaupdate_config_st DELTA_UPDATE_STATUS_DB[] = {
{NO_DELTA_UPDATE, "IP_NO_UPDATE"},
{START_DELTA_UPDATE, "IP_START_UPDATE"},
{DELTA_UPDATE_IN_PROGRESS, "IP_PREVIOUS_UPDATE_IN_PROGRESS"},
{DELTA_UPDATE_SUCCESSFUL, "IP_PREVIOUS_UPDATE_SUCCESSFUL"},
{DELTA_UPDATE_FAILED, "IP_PREVIOUS_UPDATE_FAILED"}
};
static char diff_pkg_path_name[PATH_MAX];
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' },
{ NULL, 0, NULL, 0 },
};
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_LOG_FILE = "/cache/recovery/last_log";
static const char *LAST_INSTALL_FILE = "/cache/recovery/last_install";
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";
/*
* 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
*
* 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);
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
if (boot.command[0] != 0 && boot.command[0] != 255) {
LOGI("Boot command: %.*s\n", sizeof(boot.command), boot.command);
}
if (boot.status[0] != 0 && boot.status[0] != 255) {
LOGI("Boot status: %.*s\n", 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 *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;
(*argv)[*argc] = strdup(strtok(buf, "\r\n")); // Strip newline.
}
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);
}
}
// 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);
}
}
// 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);
unlink(TEMPORARY_LOG_FILE);
copy_log_file(TEMPORARY_INSTALL_FILE, LAST_INSTALL_FILE, false);
unlink(TEMPORARY_INSTALL_FILE);
chmod(LOG_FILE, 0600);
chown(LOG_FILE, 1000, 1000); // system user
chmod(LAST_LOG_FILE, 0640);
chmod(LAST_INSTALL_FILE, 0644);
// Reset to mormal 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.
}
static int
erase_volume(const char *volume) {
ui_set_background(BACKGROUND_ICON_INSTALLING);
ui_show_indeterminate_progress();
ui_print("Formatting %s...\n", volume);
ensure_path_unmounted(volume);
if (strcmp(volume, "/cache") == 0) {
// 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;
}
return format_volume(volume);
}
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 = 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 char**
prepend_title(const char** headers) {
char* title[] = { "Android system recovery <"
EXPAND(RECOVERY_API_VERSION) "e>",
"",
NULL };
// count the number of lines in our title, plus the
// caller-provided headers.
int count = 0;
char** p;
for (p = title; *p; ++p, ++count);
for (p = headers; *p; ++p, ++count);
char** new_headers = malloc((count+1) * sizeof(char*));
char** h = new_headers;
for (p = title; *p; ++p, ++h) *h = *p;
for (p = headers; *p; ++p, ++h) *h = *p;
*h = NULL;
return new_headers;
}
static int
get_menu_selection(char** headers, char** items, int menu_only,
int initial_selection) {
// throw away keys pressed previously, so user doesn't
// accidentally trigger menu items.
ui_clear_key_queue();
ui_start_menu(headers, items, initial_selection);
int selected = initial_selection;
int chosen_item = -1;
while (chosen_item < 0) {
int key = ui_wait_key();
int visible = ui_text_visible();
if (key == -1) { // ui_wait_key() timed out
if (ui_text_ever_visible()) {
continue;
} else {
LOGI("timed out waiting for key input; rebooting.\n");
ui_end_menu();
return ITEM_REBOOT;
}
}
int action = device_handle_key(key, visible);
if (action < 0) {
switch (action) {
case HIGHLIGHT_UP:
--selected;
selected = ui_menu_select(selected);
break;
case HIGHLIGHT_DOWN:
++selected;
selected = ui_menu_select(selected);
break;
case SELECT_ITEM:
chosen_item = selected;
break;
case NO_ACTION:
break;
}
} else if (!menu_only) {
chosen_item = action;
}
}
ui_end_menu();
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) {
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;
}
char** headers = prepend_title(MENU_HEADERS);
int d_size = 0;
int d_alloc = 10;
char** dirs = malloc(d_alloc * sizeof(char*));
int z_size = 1;
int z_alloc = 10;
char** zips = 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 = realloc(dirs, d_alloc * sizeof(char*));
}
dirs[d_size] = 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 = 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 = 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);
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);
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) {
if (confirm) {
static char** title_headers = NULL;
if (title_headers == NULL) {
char* headers[] = { "Confirm wipe of all user data?",
" THIS CAN NOT BE UNDONE.",
"",
NULL };
title_headers = prepend_title((const char**)headers);
}
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);
if (chosen_item != 7) {
return;
}
}
ui_print("\n-- Wiping data...\n");
erase_volume("/data");
erase_volume("/cache");
ui_print("Data wipe complete.\n");
}
static void
print_property(const char *key, const char *name, void *cookie) {
printf("%s=%s\n", key, name);
}
static const char* skip_whitespaces(const char* ptr)
{
while(*ptr != '\0')
{
if(*ptr == 0x09 /* Tab */
|| *ptr == 0x0A /* LF */
|| *ptr == 0x0D /* CR */
|| *ptr == 0x20 /* SP */
)
ptr++;
else
return ptr;
}
return NULL;
}
static char* trim_whitespace(char *str)
{
char *end;
// Trim leading space
while(isspace(*str)) str++;
if(*str == 0)
return str;
// Trim trailing space
end = str + strlen(str) - 1;
while(end > str && isspace(*end)) end--;
// Write new null terminator
*(end+1) = 0;
return str;
}
static int deltaupdate_pkg_location(char* diff_pkg_path_name)
{
static char line[MAX_STRING_LEN];
struct stat status;
FILE* fp;
char* tmp_str, saveptr;
bool found = false;
int i = 0;
while (i++ < 3)
{
LOGI("fopen_path %d %s\n", i, FOTA_PROP_FILE);
fp = fopen_path(FOTA_PROP_FILE, "r");
if (fp)
break;
sleep(1);
}
if (fp == NULL)
{
LOGI("Failed to open %s, use default pkg location:%s\n",
FOTA_PROP_FILE, DEFAULT_PKG_LOCATION);
strlcpy(diff_pkg_path_name, DEFAULT_PKG_LOCATION, PATH_MAX);
}
else
{
while(fgets(line, MAX_STRING_LEN, fp)!=NULL)
{
tmp_str = strtok_r(line, "=", &saveptr);
if(strcmp(tmp_str, PKG_LOCATION_STRING_NAME) == 0)
{
tmp_str = strtok_r(NULL, "=\n", &saveptr);
strlcpy(diff_pkg_path_name, tmp_str, PATH_MAX);
diff_pkg_path_name = trim_whitespace(diff_pkg_path_name);
LOGI("Package location: %s\r\n", diff_pkg_path_name);
found = true;
break;
}
}
if (!found)
{
LOGI("Package location is not defined in %s. Use default location: %s\n",
FOTA_PROP_FILE, DEFAULT_PKG_LOCATION );
strlcpy(diff_pkg_path_name, DEFAULT_PKG_LOCATION, PATH_MAX);
}
fclose(fp);
}
if (ensure_path_mounted(diff_pkg_path_name) != 0) {
LOGI("Cannot mount %s\n", diff_pkg_path_name);
reset_fota_cookie_mtd();
return -1;
}
strlcat(diff_pkg_path_name, "/", PATH_MAX);
strlcat(diff_pkg_path_name, DIFF_PACKAGE_NAME, PATH_MAX);
if (access(diff_pkg_path_name, F_OK) != 0) {
LOGI("Delta package does not exist %s\n", diff_pkg_path_name);
reset_fota_cookie_mtd();
return -1;
}
LOGI("Delta package path name: %s\n", diff_pkg_path_name);
return 0;
}
static int get_deltaupdate_recoverycount(void)
{
FILE* f;
int len, num;
char* buf;
f = fopen_path(NUM_OF_RECOVERY, "r");
if(f == NULL)
{
LOGI("Error opening recovery count file. Ignore.\n");
return 0;
}
fseek(f, 0, SEEK_END);
len = ftell(f);
buf = malloc(len+1);
if (buf == NULL) {
LOGI("Failed to allocate buffer\n");
return 0;
}
memset(buf,0x0,len+1);
fseek(f, 0, SEEK_SET);
fread(buf, sizeof(char), len, f);
check_and_fclose(f,NUM_OF_RECOVERY);
if ((buf = strstr((const char*)buf, "numRecovery")) == NULL)
{
LOGI("Recovery count string doesn't match.Ignore.\n");
}
else
{
buf += 11;
if ((buf = strstr((const char*)buf, "=")) == NULL)
{
LOGI("Invalid recovery count value. Ignore.\n");
}
else
{
buf += 1;
buf = (char*)skip_whitespaces((const char*)buf);
num = atoi((const char*)buf);
return num;
}
}
return 0;
}
static int get_deltaupdate_status(void)
{
FILE* f;
int len;
char* buf;
int i, num_index;
LOGI("Checking delta update status...\n");
f = fopen_path(DELTA_UPDATE_STATUS_FILE, "r");
if(f == NULL)
{
LOGI("fopen error(%s)\n",DELTA_UPDATE_STATUS_FILE);
return -1;
}
fseek(f, 0, SEEK_END);
len = ftell(f);
buf = malloc(len+1);
if (buf == NULL) {
LOGI("Failed to allocate buffer\n");
return -1;
}
memset(buf,0x0,len+1);
fseek(f, 0, SEEK_SET);
fread(buf, sizeof(char), len, f);
check_and_fclose(f,DELTA_UPDATE_STATUS_FILE);
num_index = sizeof(DELTA_UPDATE_STATUS_DB)/sizeof(deltaupdate_config_st);
for (i = 0; i < num_index; i++)
{
if (strstr((const char*)buf, DELTA_UPDATE_STATUS_DB[i].str)!=NULL)
{
return DELTA_UPDATE_STATUS_DB[i].idx;
}
}
LOGI("NO UPDATE SET\n");
return NO_DELTA_UPDATE;
}
static int set_deltaupdate_status(int status, int error_code)
{
FILE* f;
char strbuf[64];
LOGI("Setting delta update status...\n");
f = fopen_path(DELTA_UPDATE_STATUS_FILE, "w");
if(f == NULL)
{
LOGI("fopen error(%s)\n",DELTA_UPDATE_STATUS_FILE);
return -1;
}
switch(status)
{
case START_DELTA_UPDATE:
case DELTA_UPDATE_IN_PROGRESS:
case DELTA_UPDATE_SUCCESSFUL:
case DELTA_UPDATE_FAILED:
if ((snprintf(strbuf, sizeof(strbuf), "%s %d", DELTA_UPDATE_STATUS_DB[status].str, error_code)) >= sizeof(strbuf)) {
LOGI("Output Truncated while setting error code\n");
}
fwrite(strbuf, sizeof(char), strlen(strbuf), f);
break;
default:
if ((snprintf(strbuf, sizeof(strbuf), "DELTA_NO_UPDATE %d", error_code)) >= sizeof(strbuf)) {
LOGI("Output Truncated while setting error code\n");
}
fwrite(strbuf, sizeof(char), strlen(strbuf), f);
break;
}
LOGI("Delta update status is set to (%s)\n",strbuf);
check_and_fclose(f,DELTA_UPDATE_STATUS_FILE);
return 0;
}
static void set_deltaupdate_recovery_bootmessage(void)
{
struct bootloader_message boot;
memset(&boot, 0, sizeof(boot));
LOGI("Setting recovery boot...\n");
if(MAX_NUM_UPDATE_RECOVERY > get_deltaupdate_recoverycount())
{
strlcpy(boot.command, "boot-recovery", sizeof(boot.command));
strlcpy(boot.recovery, "recovery\n", sizeof(boot.recovery));
}
else
{
LOGI("Recovery mode reached maximum retry. Clear boot message.\n");
}
set_bootloader_message(&boot);
LOGI("boot.command=%s\n",boot.command);
LOGI("boot.recovery=%s\n",boot.recovery);
}
static void reset_deltaupdate_recovery_bootmessage(void)
{
struct bootloader_message boot;
memset(&boot, 0, sizeof(boot));
LOGI("Resetting recovery boot...\n");
set_bootloader_message(&boot);
LOGI("boot.command=%s\n",boot.command);
LOGI("boot.recovery=%s\n",boot.recovery);
}
static void increment_deltaupdate_recoverycount(void)
{
FILE* f;
int num;
char numbuf[8];
char strbuf[32];
num = get_deltaupdate_recoverycount();
num += 1;
snprintf(numbuf, sizeof(numbuf), "%d", num);
memset(strbuf,0x0,sizeof(strbuf));
strlcpy(strbuf,"numRecovery=",sizeof(strbuf));
strlcat(strbuf,numbuf,sizeof(strbuf));
f = fopen_path(NUM_OF_RECOVERY, "w");
if(f == NULL)
{
LOGI("Error Creating file %s\n",NUM_OF_RECOVERY);
return;
}
fwrite(strbuf, sizeof(char), strlen(strbuf), f);
check_and_fclose(f, NUM_OF_RECOVERY);
}
static int remove_tempfiles(char* diff_pkg_path_name)
{
if (unlink(diff_pkg_path_name) && errno != ENOENT)
LOGI("Cannot unlink %s\n", diff_pkg_path_name);
if (unlink(NUM_OF_RECOVERY) && errno != ENOENT)
LOGI("Cannot unlink %s\n", NUM_OF_RECOVERY);
if (unlink(DSP1_DIFF_EXTRACT_PATH) && errno != ENOENT)
LOGI("Cannot unlink %s\n", RADIO_DIFF_OUTPUT);
if (unlink(DSP2_DIFF_EXTRACT_PATH) && errno != ENOENT)
LOGI("Cannot unlink %s\n", DSP2_DIFF_EXTRACT_PATH);
if (unlink(DSP3_DIFF_EXTRACT_PATH) && errno != ENOENT)
LOGI("Cannot unlink %s\n", DSP3_DIFF_EXTRACT_PATH);
return 0;
}
static int read_buildprop(char **ver)
{
FILE* b_fp;
char line[MAX_STRING_LEN];
char *tmpStr, *saveptr;
LOGI("read_buildprop.\n");
b_fp = fopen_path(BUILD_PROP_FILE, "r");
if(!b_fp)
return -1;
while(fgets(line, sizeof(line), b_fp))
{
tmpStr = strtok_r(line, "=", &saveptr);
if(strcmp(tmpStr, BUILD_PROP_NAME) == 0)
{
tmpStr = strtok_r(NULL, "=", &saveptr);
strlcpy(*ver, tmpStr, MAX_STRING_LEN);
fclose(b_fp);
return 0;
}
}
fclose(b_fp);
return -1;
}
static char *delta_update_replace_str(char *str, char *org, char *rep)
{
static char buffer[MAX_STRING_LEN];
char *p;
if(!(p = strstr(str, org)))
return str;
if ((strlcpy(buffer, str, MAX_STRING_LEN)) >= MAX_STRING_LEN) {
LOGI("Version Update string truncated\n");
return NULL;
}
buffer[p-str] = '\0';
strlcat(buffer, rep, MAX_STRING_LEN);
strlcat(buffer, p + strlen(org), MAX_STRING_LEN);
return buffer;
}
static int update_fotapropver(char *ver)
{
int size;
FILE *b_fp;
char *buff;
char *newbuff;
char *orgstr=NULL;
char newstr[MAX_STRING_LEN];
char line[MAX_STRING_LEN];
LOGI("update_ver:%s\r\n",ver);
b_fp = fopen_path(FOTA_PROP_FILE, "r");
if(!b_fp)
return -1;
//Read Old Version
while(fgets(line, sizeof(line), b_fp))
{
orgstr = strstr(line, VERSION_STRING_NAME);
if(orgstr)
{
break;
}
}
if(orgstr == NULL)
{
LOGI("No firmware property.\r\n");
return -1;
}
//Build New Version
snprintf(newstr, MAX_STRING_LEN, "%s=%s",VERSION_STRING_NAME, ver);
//Read Org File
fseek(b_fp, 0, SEEK_END);
size = ftell(b_fp);
buff = (char*)malloc(size+1);
if (buff == NULL) {
LOGI("Failed to allocate buffer\n");
return -1;
}
memset(buff, 0x0, size);
//Update Version
fseek(b_fp, 0, SEEK_SET);
fread(buff, sizeof(char), size, b_fp);
fclose(b_fp);
buff[size] = '\0';
newbuff = delta_update_replace_str(buff, orgstr, newstr);
if (newbuff) {
b_fp = fopen_path(FOTA_PROP_FILE, "w+");
fwrite(newbuff, sizeof(char), strlen(newbuff), b_fp);
fclose(b_fp);
return 0;
}
return -1;
}
static int update_fotaprop(void)
{
int ret;
char *ver;
ui_print("update_fotaprop.\n");
ver = (char *)malloc(MAX_STRING_LEN);
if (ver == NULL) {
LOGI("Failed to allocate buffer\n");
return 0;
}
memset(ver, 0x0, MAX_STRING_LEN);
if(ensure_path_mounted(FOTA_PROP_FILE) != 0)
LOGI("failed to locate fota prop file \n");
if(ensure_path_mounted(BUILD_PROP_PATH) != 0)
LOGI("failed to locate build.prop \n");
ret = read_buildprop(&ver);
if(ret != 0)
{
LOGI("Failed reading build version.\n");
return -1;
}
LOGI("Found build version:%s\n",ver);
ret = update_fotapropver(ver);
if(ret != 0)
{
LOGI("Failed update version.\n");
return -1;
}
return 0;
}
int start_deltaupdate(char* diff_pkg_path_name)
{
int status;
int wipe_cache = 0;
LOGI("Start delta update...\n");
set_deltaupdate_recovery_bootmessage();
status = install_package(diff_pkg_path_name, &wipe_cache, TEMPORARY_INSTALL_FILE);
if (status != INSTALL_SUCCESS)
{
ui_set_background(BACKGROUND_ICON_ERROR);
ui_print("Delta update failed.\n");
finish_recovery("--send_intent=DELTA_UPDATE_FAILED");
set_deltaupdate_status(DELTA_UPDATE_FAILED, DELTA_UPDATE_FAILED_410);
reset_fota_cookie_mtd();
return -1;
}
// modem update starts only if android update is successful
status = start_delta_modemupdate(diff_pkg_path_name);
reset_fota_cookie_mtd();
// modem update is complete. Handle update result.
if (status != DELTA_UPDATE_SUCCESS_200)
{
ui_set_background(BACKGROUND_ICON_ERROR);
ui_print("Delta update failed(%d)\n",status);
finish_recovery("--send_intent=DELTA_UPDATE_FAILED");
set_deltaupdate_status(DELTA_UPDATE_FAILED, DELTA_UPDATE_FAILED_410);
return -1;
}
finish_recovery("--send_intent=DELTA_UPDATE_SUCCESSFUL");
set_deltaupdate_status(DELTA_UPDATE_SUCCESSFUL, DELTA_UPDATE_SUCCESS_200);
ui_print("\n Delta Update Completed \n");
// Remove all temp files
remove_tempfiles(diff_pkg_path_name);
update_fotaprop();
return 0;
}
/* FOTA(Delta Update) INSTALL
* 1. main system downloads delta update package to location specified in
* FOTA_PROP_FILE if it exists.
* -- Otherwise, downloads into default package location -
* cache/fota/DIFF_PACKAGE_NAME
* 2. main system reboots into recovery
* 3. get_args() writes BCB with "boot-recovery"
* -- after this, fota cookie is set to enable modem image update --
* -- rebooting into recovery to start android update --
* 4. main system reboots into recovery
* 5. get_args() writes BCB with "boot-recovery"
* 6. install_package() attempts to install android delta update
* NOTE: the package install must itself be restartable from any point
* 7. If update succeeds, calls start_delta_modemupdate() to begin
* modem update.
* NOTE: the package install must itself be restartable from any point
* 8. If update succeeds, reset fota cookie.
* 9. finish_recovery() erases BCB
* -- after this, rebooting will (try to) restart the main system --
* 10. ** if install failed **
* 10a. Show error icon, reset fota cookie.
* 10b. finish_recovery() erases BCB
* -- after this, rebooting will (try to) restart the main system --
* 11. handle_deltaupdate_status() calls reboot() to boot main system
*/
static int handle_deltaupdate_status(void)
{
int update_status;
struct stat status;
if (deltaupdate_pkg_location(diff_pkg_path_name) == -1 )
{
return -1;
}
//Increment count that indicates number of times device enters into recovery
//during delta update. This prevents the device recycling endlessly in recovery mode.
increment_deltaupdate_recoverycount();
update_status = get_deltaupdate_status();
LOGI("update_status = %d\n", update_status);
switch(update_status)
{
case START_DELTA_UPDATE:
set_deltaupdate_status(DELTA_UPDATE_IN_PROGRESS, 0);
case DELTA_UPDATE_IN_PROGRESS:
start_deltaupdate(diff_pkg_path_name);
break;
default:
LOGI("No update set\n");
if (MAX_NUM_UPDATE_RECOVERY < get_deltaupdate_recoverycount()){
reset_deltaupdate_recovery_bootmessage();
reset_fota_cookie_mtd();
}
return EXIT_SUCCESS;
}
sync();
LOGI("Rebooting after recovery\n");
syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART, NULL);
return EXIT_SUCCESS;
}
int
main(int argc, char **argv) {
time_t start = time(NULL);
freopen(TEMPORARY_LOG_FILE, "a", stdout);
freopen(TEMPORARY_LOG_FILE, "a", stderr);
// Disable stream buffering (note that /tmp is a ramdisk)
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
printf("Starting recovery on %s", ctime(&start));
ui_init();
ui_set_background(BACKGROUND_ICON_INSTALLING);
load_volume_table();
int previous_runs = 0;
const char *send_intent = NULL;
const char *update_package = NULL;
int wipe_data = 0, wipe_cache = 0;
//check delta update first
handle_deltaupdate_status();
#ifdef ENABLE_RECOVERY_COMMAND_LINE_ARG
int arg;
get_args(&argc, &argv);
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 't': ui_show_text(1); break;
case '?':
LOGE("Invalid command argument\n");
continue;
}
}
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 = 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);
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");
} else if (wipe_data) {
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 {
status = INSTALL_ERROR; // No command specified
}
if (status != INSTALL_SUCCESS) ui_set_background(BACKGROUND_ICON_ERROR);
if (status != INSTALL_SUCCESS || ui_text_visible()) {
finish_recovery(NULL);
}
// Otherwise, get ready to boot the main system...
finish_recovery(send_intent);
ui_print("Rebooting...\n");
__reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART, NULL);
#endif
LOGI("Rebooting at the end of recovery module.\n");
finish_recovery(NULL);
syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART, NULL);
return EXIT_SUCCESS;
}
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