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recovery.cpp
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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 <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <limits.h>
#include <linux/input.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/klog.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#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 "voldclient/voldclient.h"
#include "adb_install.h"
extern "C" {
#include "minadbd/adb.h"
#include "fuse_sideload.h"
#include "fuse_sdcard_provider.h"
#include "recovery_cmds.h"
}
struct selabel_handle *sehandle;
#ifdef HAVE_OEMLOCK
/*
* liboemlock must supply the following C symbols:
*
* - int oemlock_get()
*
* Returns the current state of the OEM lock, if available.
* -1: Not available and/or error
* 0: Unlocked
* 1: Locked
*
* - int oemlock_set(int lock)
*
* Sets the state of the OEM lock. The "lock" parameter will be set
* to 0 for unlock and 1 for lock.
*
* Returns 0 on success, -1 on error
*/
extern "C" {
int oemlock_get();
int oemlock_set(int lock);
}
enum OemLockOp {
OEM_LOCK_NONE,
OEM_LOCK_UNLOCK
};
static OemLockOp oem_lock = OEM_LOCK_NONE;
#endif
static const struct option OPTIONS[] = {
{ "send_intent", required_argument, NULL, 's' },
{ "update_package", required_argument, NULL, 'u' },
{ "headless", no_argument, NULL, 'h' },
{ "wipe_data", no_argument, NULL, 'w' },
{ "wipe_cache", no_argument, NULL, 'c' },
{ "wipe_media", no_argument, NULL, 'm' },
{ "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' },
{ "reason", required_argument, NULL, 'r' },
{ "sideload", no_argument, NULL, 'a' },
{ 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 *TEMPORARY_LOG_FILE = "/tmp/recovery.log";
static const char *TEMPORARY_INSTALL_FILE = "/tmp/last_install";
static const char *LAST_KMSG_FILE = "/cache/recovery/last_kmsg";
#define KLOG_DEFAULT_LEN (64 * 1024)
#define KEEP_LOG_COUNT 10
// Number of lines per page when displaying a file on screen
#define LINES_PER_PAGE 30
RecoveryUI* ui = NULL;
char* locale = NULL;
char recovery_version[PROPERTY_VALUE_MAX+1];
char* stage = NULL;
char* reason = NULL;
#include "mtdutils/mounts.h"
/*
* 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
* --sideload - enter sideload mode
*
* 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;
}
static void redirect_stdio(const char* filename) {
// If these fail, there's not really anywhere to complain...
freopen(filename, "a", stdout); setbuf(stdout, NULL);
freopen(filename, "a", stderr); setbuf(stderr, NULL);
}
// 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;
// Arguments that may only be passed in BCB
#ifdef HAVE_OEMLOCK
if (strcmp(arg, "--oemunlock") == 0) {
oem_lock = OEM_LOCK_UNLOCK;
--*argc;
continue;
}
#endif
(*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);
}
// read from kernel log into buffer and write out to file
static void
save_kernel_log(const char *destination) {
int n;
char *buffer;
int klog_buf_len;
FILE *log;
klog_buf_len = klogctl(KLOG_SIZE_BUFFER, 0, 0);
if (klog_buf_len <= 0) {
LOGE("Error getting klog size (%s), using default\n", strerror(errno));
klog_buf_len = KLOG_DEFAULT_LEN;
}
buffer = (char *)malloc(klog_buf_len);
if (!buffer) {
LOGE("Can't alloc %d bytes for klog buffer\n", klog_buf_len);
return;
}
n = klogctl(KLOG_READ_ALL, buffer, klog_buf_len);
if (n < 0) {
LOGE("Error in reading klog (%s)\n", strerror(errno));
free(buffer);
return;
}
log = fopen_path(destination, "w");
if (log == NULL) {
LOGE("Can't open %s\n", destination);
free(buffer);
return;
}
fwrite(buffer, n, 1, log);
check_and_fclose(log, destination);
free(buffer);
}
// 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);
save_kernel_log(LAST_KMSG_FILE);
chmod(LOG_FILE, 0600);
chown(LOG_FILE, 1000, 1000); // system user
chmod(LAST_KMSG_FILE, 0600);
chown(LAST_KMSG_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 force = false) {
bool is_cache = (strcmp(volume, CACHE_ROOT) == 0);
saved_log_file* head = NULL;
ui->SetBackground(RecoveryUI::ERASING);
ui->SetProgressType(RecoveryUI::INDETERMINATE);
if (!force && 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);
if (volume[0] == '/') {
ensure_path_unmounted(volume);
}
int result = format_volume(volume, force);
if (!force && 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 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++) = "CyanogenMod Simple recovery <" EXPAND(RECOVERY_API_VERSION) "e>";
*(h++) = recovery_version;
*(h++) = "";
for (p = headers; *p; ++p, ++h) *h = *p;
*h = NULL;
return new_headers;
}
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();
// Count items to detect valid values for absolute selection
int item_count = 0;
while (items[item_count] != NULL)
++item_count;
ui->StartMenu(headers, items, initial_selection);
int selected = initial_selection;
int chosen_item = -1;
while (chosen_item < 0 && chosen_item != Device::kGoBack && chosen_item != Device::kRefresh) {
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
}
} else if (key == -2) { // we are returning from ui_cancel_wait_key(): no action
return Device::kNoAction;
}
else if (key == -6) {
return Device::kRefresh;
}
int action = device->HandleMenuKey(key, visible);
if (action >= 0) {
if ((action & ~KEY_FLAG_ABS) >= item_count) {
action = Device::kNoAction;
}
else {
// Absolute selection. Update selected item and give some
// feedback in the UI by selecting the item for a short time.
selected = action & ~KEY_FLAG_ABS;
action = Device::kInvokeItem;
selected = ui->SelectMenu(selected, true);
usleep(50*1000);
}
}
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;
case Device::kGoBack:
chosen_item = Device::kGoBack;
break;
case Device::kRefresh:
chosen_item = Device::kRefresh;
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);
}
// Returns a malloc'd path, or NULL.
static char*
browse_directory(const char* path, 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));
return NULL;
}
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;
char* result;
int chosen_item = 0;
while (true) {
chosen_item = get_menu_selection(headers, zips, 1, chosen_item, device);
// item 0 is always "../"
if (chosen_item == 0 || chosen_item == Device::kGoBack) {
// go up but continue browsing (if the caller is update_directory)
result = NULL;
break;
}
char* item = zips[chosen_item];
int item_len = strlen(item);
char new_path[PATH_MAX];
strlcpy(new_path, path, PATH_MAX);
strlcat(new_path, "/", PATH_MAX);
strlcat(new_path, item, PATH_MAX);
if (item[item_len-1] == '/') {
// recurse down into a subdirectory
new_path[strlen(new_path)-1] = '\0'; // truncate the trailing '/'
result = browse_directory(new_path, device);
if (result) break;
} else {
// selected a zip file: return the malloc'd path to the caller.
result = strdup(new_path);
break;
}
}
int i;
for (i = 0; i < z_size; ++i) free(zips[i]);
free(zips);
free(headers);
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",
" Yes -- delete all user data", // [7]
" No",
NULL };
int chosen_item = get_menu_selection(title_headers, items, 1, 0, device);
if (chosen_item != 2) {
return;
}
}
ui->Print("\n-- Wiping data...\n");
device->WipeData();
erase_volume("/data");
erase_volume("/cache");
ui->Print("Data wipe complete.\n");
}
static void file_to_ui(const char* fn) {
FILE *fp = fopen_path(fn, "re");
if (fp == NULL) {
ui->Print(" Unable to open %s: %s\n", fn, strerror(errno));
return;
}
char line[1024];
int ct = 0;
int key = 0;
ui->SetBackground(RecoveryUI::VIEWING_LOG);
redirect_stdio("/dev/null");
while(fgets(line, sizeof(line), fp) != NULL) {
ui->Print("%s", line);
ct++;
if (ct % LINES_PER_PAGE == 0) {
// give the user time to glance at the entries
key = ui->WaitKey();
if (key == KEY_POWER || key == KEY_BACK) {
break;
}
if (key == KEY_VOLUMEUP) {
// Go back by seeking to the beginning and dumping ct - n
// lines. It's ugly, but this way we don't need to store
// the previous offsets. The files we're dumping here aren't
// expected to be very large.
int i;
ct -= 2 * LINES_PER_PAGE;
if (ct < 0) {
ct = 0;
}
fseek(fp, 0, SEEK_SET);
for (i = 0; i < ct; i++) {
fgets(line, sizeof(line), fp);
}
ui->Print("^^^^^^^^^^\n");
}
}
}
// If the user didn't abort, then give the user time to glance at
// the end of the log, sorry, no rewind here
if (key != KEY_POWER && key != KEY_BACK) {
ui->Print("\n--END-- (press any key)\n");
ui->WaitKey();
}
ui->SetBackground(RecoveryUI::NONE);
redirect_stdio(TEMPORARY_LOG_FILE);
fclose(fp);
}
static void choose_recovery_file(Device* device) {
unsigned int i;
unsigned int n;
static const char** title_headers = NULL;
char *filename;
const char* headers[] = { "Select file to view",
"",
NULL };
// "Go back" + LAST_KMSG_FILE + KEEP_LOG_COUNT + terminating NULL entry
char* entries[KEEP_LOG_COUNT + 3];
memset(entries, 0, sizeof(entries));
n = 0;
entries[n++] = strdup("Go back");
// Add kernel kmsg file if available
if ((ensure_path_mounted(LAST_KMSG_FILE) == 0) && (access(LAST_KMSG_FILE, R_OK) == 0)) {
entries[n++] = strdup(LAST_KMSG_FILE);
}
// Add LAST_LOG_FILE + LAST_LOG_FILE.x
for (i = 0; i < KEEP_LOG_COUNT; i++) {
char *filename;
if (asprintf(&filename, (i==0) ? LAST_LOG_FILE : (LAST_LOG_FILE ".%d"), i) == -1) {
// memory allocation failure - return early. Should never happen.
return;
}
if ((ensure_path_mounted(filename) != 0) || (access(filename, R_OK) == -1)) {
free(filename);
entries[n++] = NULL;
break;
}
entries[n++] = filename;
}
title_headers = prepend_title((const char**)headers);
while(1) {
int chosen_item = get_menu_selection(title_headers, entries, 1, 0, device);
if (chosen_item == 0 || chosen_item == Device::kGoBack) break;
file_to_ui(entries[chosen_item]);
}
for (i = 0; i < (sizeof(entries) / sizeof(*entries)); i++) {
free(entries[i]);
}
}
static void
wipe_media(int confirm, Device* device) {
if (confirm) {
static const char** title_headers = NULL;
if (title_headers == NULL) {
const char* headers[] = { "Confirm wipe of all user media?",
" THIS CAN NOT BE UNDONE.",
"",
NULL };
title_headers = prepend_title((const char**)headers);
}
const char* items[] = { " No",
" No",
" Yes -- delete all user media", // [7]
" No",
NULL };
int chosen_item = get_menu_selection(title_headers, items, 1, 0, device);
if (chosen_item != 2) {
return;
}
}
ui->Print("\n-- Wiping media...\n");
device->WipeMedia();
erase_volume("media");
ui->Print("Media wipe complete.\n");
}
static int enter_sideload_mode(int* wipe_cache, Device* device) {
ensure_path_mounted(CACHE_ROOT);
start_sideload(ui, wipe_cache, TEMPORARY_INSTALL_FILE);
static const char* headers[] = { "ADB Sideload",
"",
NULL
};
static const char* list[] = { "Cancel sideload", NULL };
int status = INSTALL_NONE;
int item = get_menu_selection(headers, list, 0, 0, device);
if (item != Device::kNoAction) {
stop_sideload();
}
status = wait_sideload();
if (status >= 0 && status != INSTALL_NONE) {
if (status != INSTALL_SUCCESS) {
ui->SetBackground(RecoveryUI::ERROR);
ui->Print("Installation aborted.\n");
} else if (!ui->IsTextVisible()) {
return status; // reboot if logs aren't visible
} else {
ui->Print("\nInstall from ADB complete.\n");
}
}
return status;
}
static int
show_apply_update_menu(Device* device) {
static const char* headers[] = { "Apply update", "", NULL };
char* menu_items[MAX_NUM_MANAGED_VOLUMES + 1 + 1];
storage_item* items = get_storage_items();
int item_sideload = 0;
menu_items[item_sideload] = strdup("Apply from ADB");
int n;
for (n = 0; items[n].label; ++n) {
menu_items[n+1] = (char*)malloc(256);
sprintf(menu_items[n+1], "Choose from %s", items[n].label);
}
menu_items[n+1] = NULL;
int wipe_cache;
int status = INSTALL_ERROR;
int chosen = get_menu_selection(headers, menu_items, 0, 0, device);
if (chosen == Device::kGoBack) {
status = INSTALL_NONE;
goto out;
}
if (chosen == item_sideload) {
status = enter_sideload_mode(&wipe_cache, device);
}
else {
storage_item* item = &items[chosen-1];
status = ensure_volume_mounted(item->vol);
if (status == 0) {
char* path = browse_directory(item->path, device);
if (path != NULL) {
ui->Print("\n-- Install %s ...\n", path);
ui->ClearLog();
ui->SetBackground(RecoveryUI::INSTALLING_UPDATE);
set_sdcard_update_bootloader_message();