int main(int argc, char **argv) {
// Recovery needs to install world-readable files, so clear umask
// set by init
umask(0);
Log_Offset = 0;
// Set up temporary log file (/tmp/recovery.log)
freopen(TMP_LOG_FILE, "a", stdout);
setbuf(stdout, NULL);
freopen(TMP_LOG_FILE, "a", stderr);
setbuf(stderr, NULL);
signal(SIGPIPE, SIG_IGN);
// Handle ADB sideload
if (argc == 3 && strcmp(argv[1], "--adbd") == 0) {
property_set("ctl.stop", "adbd");
adb_main(argv[2]);
return 0;
}
#ifdef RECOVERY_SDCARD_ON_DATA
datamedia = true;
#endif
char crash_prop_val[PROPERTY_VALUE_MAX];
int crash_counter;
property_get("twrp.crash_counter", crash_prop_val, "-1");
crash_counter = atoi(crash_prop_val) + 1;
snprintf(crash_prop_val, sizeof(crash_prop_val), "%d", crash_counter);
property_set("twrp.crash_counter", crash_prop_val);
property_set("ro.twrp.boot", "1");
property_set("ro.twrp.version", TW_VERSION_STR);
time_t StartupTime = time(NULL);
printf("Starting TWRP %s on %s (pid %d)\n", TW_VERSION_STR, ctime(&StartupTime), getpid());
// Load default values to set DataManager constants and handle ifdefs
DataManager::SetDefaultValues();
printf("Starting the UI...");
gui_init();
printf("=> Linking mtab\n");
symlink("/proc/mounts", "/etc/mtab");
if (TWFunc::Path_Exists("/etc/twrp.fstab")) {
if (TWFunc::Path_Exists("/etc/recovery.fstab")) {
printf("Renaming regular /etc/recovery.fstab -> /etc/recovery.fstab.bak\n");
rename("/etc/recovery.fstab", "/etc/recovery.fstab.bak");
}
printf("Moving /etc/twrp.fstab -> /etc/recovery.fstab\n");
rename("/etc/twrp.fstab", "/etc/recovery.fstab");
}
printf("=> Processing recovery.fstab\n");
if (!PartitionManager.Process_Fstab("/etc/recovery.fstab", 1)) {
LOGERR("Failing out of recovery due to problem with recovery.fstab.\n");
return -1;
}
PartitionManager.Output_Partition_Logging();
// Load up all the resources
gui_loadResources();
#ifdef HAVE_SELINUX
if (TWFunc::Path_Exists("/prebuilt_file_contexts")) {
if (TWFunc::Path_Exists("/file_contexts")) {
printf("Renaming regular /file_contexts -> /file_contexts.bak\n");
rename("/file_contexts", "/file_contexts.bak");
}
printf("Moving /prebuilt_file_contexts -> /file_contexts\n");
rename("/prebuilt_file_contexts", "/file_contexts");
}
struct selinux_opt selinux_options[] = {
{ SELABEL_OPT_PATH, "/file_contexts" }
};
selinux_handle = selabel_open(SELABEL_CTX_FILE, selinux_options, 1);
if (!selinux_handle)
printf("No file contexts for SELinux\n");
else
printf("SELinux contexts loaded from /file_contexts\n");
{ // Check to ensure SELinux can be supported by the kernel
char *contexts = NULL;
if (PartitionManager.Mount_By_Path("/cache", true) && TWFunc::Path_Exists("/cache/recovery")) {
lgetfilecon("/cache/recovery", &contexts);
if (!contexts) {
lsetfilecon("/cache/recovery", "test");
lgetfilecon("/cache/recovery", &contexts);
}
} else {
LOGINFO("Could not check /cache/recovery SELinux contexts, using /sbin/teamwin instead which may be inaccurate.\n");
lgetfilecon("/sbin/teamwin", &contexts);
}
if (!contexts) {
gui_print_color("warning", "Kernel does not have support for reading SELinux contexts.\n");
} else {
free(contexts);
gui_print("Full SELinux support is present.\n");
}
}
#else
gui_print_color("warning", "No SELinux support (no libselinux).\n");
#endif
PartitionManager.Mount_By_Path("/cache", true);
string Zip_File, Reboot_Value;
bool Cache_Wipe = false, Factory_Reset = false, Perform_Backup = false, Shutdown = false;
{
TWPartition* misc = PartitionManager.Find_Partition_By_Path("/misc");
if (misc != NULL) {
if (misc->Current_File_System == "emmc") {
set_device_type('e');
set_device_name(misc->Actual_Block_Device.c_str());
} else if (misc->Current_File_System == "mtd") {
set_device_type('m');
set_device_name(misc->MTD_Name.c_str());
} else {
LOGERR("Unknown file system for /misc\n");
}
}
get_args(&argc, &argv);
int index, index2, len;
char* argptr;
char* ptr;
printf("Startup Commands: ");
for (index = 1; index < argc; index++) {
argptr = argv[index];
printf(" '%s'", argv[index]);
len = strlen(argv[index]);
if (*argptr == '-') {argptr++; len--;}
if (*argptr == '-') {argptr++; len--;}
if (*argptr == 'u') {
ptr = argptr;
index2 = 0;
while (*ptr != '=' && *ptr != '\n')
ptr++;
// skip the = before grabbing Zip_File
while (*ptr == '=')
ptr++;
if (*ptr) {
Zip_File = ptr;
} else
LOGERR("argument error specifying zip file\n");
} else if (*argptr == 'w') {
if (len == 9)
Factory_Reset = true;
else if (len == 10)
Cache_Wipe = true;
} else if (*argptr == 'n') {
Perform_Backup = true;
} else if (*argptr == 'p') {
Shutdown = true;
} else if (*argptr == 's') {
ptr = argptr;
index2 = 0;
while (*ptr != '=' && *ptr != '\n')
ptr++;
if (*ptr) {
Reboot_Value = *ptr;
}
}
}
printf("\n");
}
if(crash_counter == 0) {
property_list(Print_Prop, NULL);
printf("\n");
} else {
printf("twrp.crash_counter=%d\n", crash_counter);
}
// Check for and run startup script if script exists
TWFunc::check_and_run_script("/sbin/runatboot.sh", "boot");
TWFunc::check_and_run_script("/sbin/postrecoveryboot.sh", "boot");
#ifdef TW_INCLUDE_INJECTTWRP
// Back up TWRP Ramdisk if needed:
TWPartition* Boot = PartitionManager.Find_Partition_By_Path("/boot");
LOGINFO("Backing up TWRP ramdisk...\n");
if (Boot == NULL || Boot->Current_File_System != "emmc")
TWFunc::Exec_Cmd("injecttwrp --backup /tmp/backup_recovery_ramdisk.img");
else {
string injectcmd = "injecttwrp --backup /tmp/backup_recovery_ramdisk.img bd=" + Boot->Actual_Block_Device;
TWFunc::Exec_Cmd(injectcmd);
}
LOGINFO("Backup of TWRP ramdisk done.\n");
#endif
bool Keep_Going = true;
if (Perform_Backup) {
DataManager::SetValue(TW_BACKUP_NAME, "(Auto Generate)");
if (!OpenRecoveryScript::Insert_ORS_Command("backup BSDCAE\n"))
Keep_Going = false;
}
if (Keep_Going && !Zip_File.empty()) {
string ORSCommand = "install " + Zip_File;
if (!OpenRecoveryScript::Insert_ORS_Command(ORSCommand))
Keep_Going = false;
}
if (Keep_Going) {
if (Factory_Reset) {
if (!OpenRecoveryScript::Insert_ORS_Command("wipe data\n"))
Keep_Going = false;
} else if (Cache_Wipe) {
if (!OpenRecoveryScript::Insert_ORS_Command("wipe cache\n"))
Keep_Going = false;
}
}
TWFunc::Update_Log_File();
// Offer to decrypt if the device is encrypted
if (DataManager::GetIntValue(TW_IS_ENCRYPTED) != 0) {
LOGINFO("Is encrypted, do decrypt page first\n");
if (gui_startPage("decrypt", 1, 1) != 0) {
LOGERR("Failed to start decrypt GUI page.\n");
} else {
// Check for and load custom theme if present
gui_loadCustomResources();
}
} else if (datamedia) {
if (tw_get_default_metadata(DataManager::GetSettingsStoragePath().c_str()) != 0) {
LOGINFO("Failed to get default contexts and file mode for storage files.\n");
} else {
LOGINFO("Got default contexts and file mode for storage files.\n");
}
}
// Read the settings file
#ifdef TW_HAS_MTP
// We unmount partitions sometimes during early boot which may override
// the default of MTP being enabled by auto toggling MTP off. This
// will force it back to enabled then get overridden by the settings
// file, assuming that an entry for tw_mtp_enabled is set.
DataManager::SetValue("tw_mtp_enabled", 1);
#endif
DataManager::ReadSettingsFile();
// Fixup the RTC clock on devices which require it
if(crash_counter == 0)
TWFunc::Fixup_Time_On_Boot();
// Run any outstanding OpenRecoveryScript
if (DataManager::GetIntValue(TW_IS_ENCRYPTED) == 0 && (TWFunc::Path_Exists(SCRIPT_FILE_TMP) || TWFunc::Path_Exists(SCRIPT_FILE_CACHE))) {
OpenRecoveryScript::Run_OpenRecoveryScript();
}
#ifdef TW_HAS_MTP
// Enable MTP?
char mtp_crash_check[PROPERTY_VALUE_MAX];
property_get("mtp.crash_check", mtp_crash_check, "0");
if (strcmp(mtp_crash_check, "0") == 0) {
property_set("mtp.crash_check", "1");
if (DataManager::GetIntValue("tw_mtp_enabled") == 1 && ((DataManager::GetIntValue(TW_IS_ENCRYPTED) != 0 && DataManager::GetIntValue(TW_IS_DECRYPTED) != 0) || DataManager::GetIntValue(TW_IS_ENCRYPTED) == 0)) {
LOGINFO("Enabling MTP during startup\n");
if (!PartitionManager.Enable_MTP())
PartitionManager.Disable_MTP();
else
gui_print("MTP Enabled\n");
} else {
PartitionManager.Disable_MTP();
}
property_set("mtp.crash_check", "0");
} else {
gui_print_color("warning", "MTP Crashed, not starting MTP on boot.\n");
DataManager::SetValue("tw_mtp_enabled", 0);
PartitionManager.Disable_MTP();
}
#else
PartitionManager.Disable_MTP();
#endif
// Launch the main GUI
gui_start();
// Disable flashing of stock recovery
TWFunc::Disable_Stock_Recovery_Replace();
// Check for su to see if the device is rooted or not
if (PartitionManager.Mount_By_Path("/system", false)) {
if (TWFunc::Path_Exists("/supersu/su") && !TWFunc::Path_Exists("/system/bin/su") && !TWFunc::Path_Exists("/system/xbin/su") && !TWFunc::Path_Exists("/system/bin/.ext/.su")) {
// Device doesn't have su installed
DataManager::SetValue("tw_busy", 1);
if (gui_startPage("installsu", 1, 1) != 0) {
LOGERR("Failed to start SuperSU install page.\n");
}
}
sync();
PartitionManager.UnMount_By_Path("/system", false);
}
// Reboot
TWFunc::Update_Intent_File(Reboot_Value);
TWFunc::Update_Log_File();
gui_print("Rebooting...\n");
string Reboot_Arg;
DataManager::GetValue("tw_reboot_arg", Reboot_Arg);
if (Reboot_Arg == "recovery")
TWFunc::tw_reboot(rb_recovery);
else if (Reboot_Arg == "poweroff")
TWFunc::tw_reboot(rb_poweroff);
else if (Reboot_Arg == "bootloader")
TWFunc::tw_reboot(rb_bootloader);
else if (Reboot_Arg == "download")
TWFunc::tw_reboot(rb_download);
else
TWFunc::tw_reboot(rb_system);
return 0;
}
bool emu_start(const char *romImage, const char *savedImage) {
bool ret = false;
long lSize;
FILE *imageFile = NULL;
gui_set_busy(true);
do {
if(savedImage != NULL) {
emu_image_t *image;
imageFile = fopen_utf8(savedImage, "rb");
if (!imageFile) {
break;
}
if (fseek(imageFile, 0L, SEEK_END) < 0) {
break;
}
lSize = ftell(imageFile);
if (lSize < 0) {
break;
}
if (fseek(imageFile, 0L, SEEK_SET) < 0) {
break;
}
if((size_t)lSize < sizeof(emu_image_t)) {
break;
}
image = (emu_image_t*)malloc(lSize);
if(!image) {
break;
}
if(fread(image, lSize, 1, imageFile) != 1) {
free(image);
break;
}
sched_reset();
sched.items[SCHED_THROTTLE].clock = CLOCK_27M;
sched.items[SCHED_THROTTLE].proc = throttle_interval_event;
asic_init();
asic_reset();
if(image->version != imageVersion || !asic_restore(image)) {
emu_cleanup();
free(image);
break;
}
free(image);
ret = true;
} else {
asic_init();
if (romImage == NULL) {
gui_console_printf("[CEmu] No ROM image specified.\n");
break;
} else {
FILE *romFile = fopen_utf8(romImage, "rb");
do {
if (romFile) {
uint16_t field_type;
const uint8_t *outer;
const uint8_t *current;
const uint8_t *data;
uint32_t outer_field_size;
uint32_t data_field_size;
ti_device_t device_type;
uint32_t offset;
/* Get ROM file size */
if (fseek(romFile, 0L, SEEK_END) < 0) {
break;
}
lSize = ftell(romFile);
if (lSize < 0) {
break;
}
if (fseek(romFile, 0L, SEEK_SET) < 0) {
break;
}
/* Read whole ROM. */
if (fread(mem.flash.block, 1, lSize, romFile) < (size_t)lSize) {
break;
}
if (mem.flash.block[0x7E] == 0xFE) {
break;
}
/* Parse certificate fields to determine model. */
/* device_type = (ti_device_type)(asic.mem->flash.block[0x20017]); */
/* We've heard of the OS base being at 0x30000 on at least one calculator. */
for (offset = 0x20000U; offset < 0x40000U; offset += 0x10000U) {
outer = mem.flash.block;
/* Outer 0x800(0) field. */
if (cert_field_get(outer + offset, mem.flash.size - offset, &field_type, &outer, &outer_field_size)) {
break;
}
if (field_type != 0x800F /*|| field_type == 0x800D || field_type == 0x800E*/) {
continue;
}
/*fprintf(stderr, "outer: %p\t%04X\t%p\t%u\n", asic.mem->flash.block, field_type, outer, outer_field_size);*/
/* Inner 0x801(0) field: calculator model */
if (cert_field_get(outer, outer_field_size, &field_type, &data, &data_field_size)) {
break;
}
/*fprintf(stderr, "inner 1: %p\t%04X\t%p\t%u\n", outer, field_type, data, data_field_size);*/
if (field_type != 0x8012 || data[0] != 0x13) {
break;
}
/* Inner 0x802(0) field: skip. */
data_field_size = outer_field_size - (data + data_field_size - outer);
data = outer;
if (cert_field_next(&data, &data_field_size)) {
break;
}
/*fprintf(stderr, "data: %p\t%04X\t%p\t%u\n", outer, field_type, data, data_field_size);*/
current = data;
if (cert_field_get(current, data_field_size, &field_type, &data, &data_field_size)) {
break;
}
/*fprintf(stderr, "inner 2: %p\t%04X\t%p\t%u\n", outer, field_type, data, data_field_size);*/
if (field_type != 0x8021) {
break;
}
/* Inner 0x803(0) field: skip. */
data_field_size = outer_field_size - (data + data_field_size - outer);
data = current;
if (cert_field_next(&data, &data_field_size)) {
break;
}
current = data;
/*fprintf(stderr, "data: %p\t%04X\t%p\t%u\n", outer, field_type, data, data_field_size);*/
if (cert_field_get(current, data_field_size, &field_type, &data, &data_field_size)) {
break;
}
/*fprintf(stderr, "inner 3: %p\t%04X\t%p\t%u\n", outer, field_type, data, data_field_size);*/
if (field_type != 0x8032) {
break;
}
/* Inner 0x80A(0) field: skip. */
data_field_size = outer_field_size - (data + data_field_size - outer);
data = current;
if (cert_field_next(&data, &data_field_size)) {
break;
}
current = data;
/*fprintf(stderr, "data: %p\t%04X\t%p\t%u\n", outer, field_type, data, data_field_size);*/
if (cert_field_get(current, data_field_size, &field_type, &data, &data_field_size)) {
break;
}
/*fprintf(stderr, "inner 4: %p\t%04X\t%p\t%u\n", outer, field_type, data, data_field_size);*/
if (field_type != 0x80A1) {
break;
}
/* Inner 0x80C(0) field: keep. */
data_field_size = outer_field_size - (data + data_field_size - outer);
data = current;
if (cert_field_next(&data, &data_field_size)) {
break;
}
current = data;
/*fprintf(stderr, "data: %p\t%04X\t%p\t%u\n", outer, field_type, data, data_field_size);*/
if (cert_field_get(current, data_field_size, &field_type, &data, &data_field_size)) {
break;
}
/*fprintf(stderr, "inner 5: %p\t%04X\t%p\t%u\n", outer, field_type, data, data_field_size);*/
if (field_type != 0x80C2) {
break;
}
/*fprintf(stderr, "Found calculator type %02X\n", data[1]);*/
if (data[1] != 0 && data[1] != 1) {
break;
}
device_type = (ti_device_t)(data[1]);
/* If we come here, we've found something. */
ret = true;
break;
}
if (ret) {
set_device_type(device_type);
}
}
} while(0);
if (romFile) {
fclose(romFile);
}
}
}
} while(0);
if (imageFile) {
fclose(imageFile);
}
if (!ret) {
gui_console_printf("[CEmu] Error opening image (Corrupted certificate?)\n");
emu_cleanup();
}
gui_set_busy(false);
return ret;
}
