twrp.cpp - android_bootable_recovery - Gitiles

 /*
 		TWRP is free software: you can redistribute it and/or modify
 		it under the terms of the GNU General Public License as published by
 		the Free Software Foundation, either version 3 of the License, or
 		(at your option) any later version.

 		TWRP is distributed in the hope that it will be useful,
 		but WITHOUT ANY WARRANTY; without even the implied warranty of
 		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 		GNU General Public License for more details.

 		You should have received a copy of the GNU General Public License
 		along with TWRP.  If not, see <http://www.gnu.org/licenses/>.
 */

 #include <stdio.h>
 #include <stdlib.h>
 #include <string>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <time.h>
 #include <unistd.h>
 #include <signal.h>
 #include "gui/twmsg.h"

 #include "cutils/properties.h"
 #include "bootloader_message_twrp/include/bootloader_message_twrp/bootloader_message.h"

 #ifdef ANDROID_RB_RESTART
 #include "cutils/android_reboot.h"
 #else
 #include <sys/reboot.h>
 #endif

 extern "C" {
 #include "gui/gui.h"
 }
 #include "set_metadata.h"
 #include "gui/gui.hpp"
 #include "gui/pages.hpp"
 #include "gui/objects.hpp"
 #include "twcommon.h"
 #include "twrp-functions.hpp"
 #include "data.hpp"
 #include "partitions.hpp"
 #ifdef __ANDROID_API_N__
 #include <android-base/strings.h>
 #else
 #include <base/strings.h>
 #endif
 #include "openrecoveryscript.hpp"
 #include "variables.h"
 #include "twrpAdbBuFifo.hpp"
 #include "twrpApex.hpp"
 #ifdef TW_USE_NEW_MINADBD
 // #include "minadbd/minadbd.h"
 #else
 extern "C" {
 #include "minadbd21/adb.h"
 }
 #endif

 //extern int adb_server_main(int is_daemon, int server_port, int /* reply_fd */);

 TWPartitionManager PartitionManager;
 int Log_Offset;
 bool datamedia;

 static void Print_Prop(const char *key, const char *name, void *cookie) {
 	printf("%s=%s\n", key, name);
 }

 static void Decrypt_Page(bool SkipDecryption, bool datamedia) {
 	// Offer to decrypt if the device is encrypted
 	if (DataManager::GetIntValue(TW_IS_ENCRYPTED) != 0) {
 		if (SkipDecryption) {
 			LOGINFO("Skipping decryption\n");
 		} else {
 			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
 				TWFunc::check_selinux_support();
 				gui_loadCustomResources();
 			}
 		}
 	} else if (datamedia) {
 		TWFunc::check_selinux_support();
 		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");
 		}
 	}
 }

 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");
 #ifdef TW_USE_NEW_MINADBD
 		//adb_server_main(0, DEFAULT_ADB_PORT, -1); TODO fix this for android8
 		// minadbd_main();
 #else
 		adb_main(argv[2]);
 #endif
 		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-%s on %s (pid %d)\n", TW_VERSION_STR, TW_GIT_REVISION, ctime(&StartupTime), getpid());

 	// Load default values to set DataManager constants and handle ifdefs
 	DataManager::SetDefaultValues();
 	printf("Starting the UI...\n");
 	gui_init();
 	printf("=> Linking mtab\n");
 	symlink("/proc/mounts", "/etc/mtab");
 	std::string fstab_filename = "/etc/twrp.fstab";
 	if (!TWFunc::Path_Exists(fstab_filename)) {
 		fstab_filename = "/etc/recovery.fstab";
 	}

 	// Begin SAR detection
 	{
 		TWPartitionManager SarPartitionManager;
 		printf("=> Processing %s for SAR-detection\n", fstab_filename.c_str());
 		if (!SarPartitionManager.Process_Fstab(fstab_filename, 1, 1)) {
 			LOGERR("Failing out of recovery due to problem with fstab.\n");
 			return -1;
 		}

 		mkdir("/s", 0755);

 #if defined(AB_OTA_UPDATER) || defined(__ANDROID_API_Q__)
 		bool fallback_sar = true;
 #else
 		bool fallback_sar = property_get_bool("ro.build.system_root_image", false);
 #endif

 		if(SarPartitionManager.Mount_By_Path("/s", false)) {
 			if (TWFunc::Path_Exists("/s/build.prop")) {
 				LOGINFO("SAR-DETECT: Non-SAR System detected\n");
 				property_set("ro.twrp.sar", "0");
 				rmdir("/system_root");
 			} else if (TWFunc::Path_Exists("/s/system/build.prop")) {
 				LOGINFO("SAR-DETECT: SAR System detected\n");
 				property_set("ro.twrp.sar", "1");
 			} else {
 				LOGINFO("SAR-DETECT: No build.prop found, falling back to %s\n", fallback_sar ? "SAR" : "Non-SAR");
 				property_set("ro.twrp.sar", fallback_sar ? "1" : "0");
 			}

 			SarPartitionManager.UnMount_By_Path("/s", false);
 		} else {
 			LOGINFO("SAR-DETECT: Could not mount system partition, falling back to %s\n", fallback_sar ? "SAR":"Non-SAR");
 			property_set("ro.twrp.sar", fallback_sar ? "1" : "0");
 		}

 		rmdir("/s");

 		TWFunc::check_and_run_script("/system/bin/sarsetup.sh", "boot");
 	}
 	// End SAR detection

 	printf("=> Processing %s\n", fstab_filename.c_str());
 	if (!PartitionManager.Process_Fstab(fstab_filename, 1, 0)) {
 		LOGERR("Failing out of recovery due to problem with fstab.\n");
 		return -1;
 	}
 	PartitionManager.Output_Partition_Logging();
 #ifdef TW_INCLUDE_CRYPTO
 	DataManager::SetValue(TW_IS_ENCRYPTED, 1);
 #endif

 	if (PartitionManager.Get_Super_Status()) {
 		PartitionManager.Setup_Super_Devices();
 		PartitionManager.Setup_Super_Partition();
 	} else {
 #ifdef TW_INCLUDE_CRYPTO
 		if (!PartitionManager.Get_Super_Status())
 			PartitionManager.Decrypt_Data();
 #endif
 	}

 	// Load up all the resources
 	gui_loadResources();

 	bool Shutdown = false;
 	bool SkipDecryption = false;
 	string Send_Intent = "";
 	{
 		TWPartition* misc = PartitionManager.Find_Partition_By_Path("/misc");
 		if (misc != NULL) {
 			if (misc->Current_File_System == "emmc") {
 				set_misc_device(misc->Actual_Block_Device.c_str());
 			} else {
 				LOGERR("Only emmc /misc is supported\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) {
 					string ORSCommand = "install ";
 					ORSCommand.append(ptr);

 					// If we have a map of blocks we don't need to mount data.
 					SkipDecryption = *ptr == '@';

 					if (!OpenRecoveryScript::Insert_ORS_Command(ORSCommand))
 						break;
 				} else
 					LOGERR("argument error specifying zip file\n");
 			} else if (*argptr == 'w') {
 				if (len == 9) {
 					if (!OpenRecoveryScript::Insert_ORS_Command("wipe data\n"))
 						break;
 				} else if (len == 10) {
 					if (!OpenRecoveryScript::Insert_ORS_Command("wipe cache\n"))
 						break;
 				}
 				// Other 'w' items are wipe_ab and wipe_package_size which are related to bricking the device remotely. We will not bother to suppor these as having TWRP probably makes "bricking" the device in this manner useless
 			} else if (*argptr == 'n') {
 				DataManager::SetValue(TW_BACKUP_NAME, gui_parse_text("{@auto_generate}"));
 				if (!OpenRecoveryScript::Insert_ORS_Command("backup BSDCAE\n"))
 					break;
 			} else if (*argptr == 'p') {
 				Shutdown = true;
 			} else if (*argptr == 's') {
 				if (strncmp(argptr, "send_intent", strlen("send_intent")) == 0) {
 					ptr = argptr + strlen("send_intent") + 1;
 					Send_Intent = *ptr;
 				} else if (strncmp(argptr, "security", strlen("security")) == 0) {
 					LOGINFO("Security update\n");
 				} else if (strncmp(argptr, "sideload", strlen("sideload")) == 0) {
 					if (!OpenRecoveryScript::Insert_ORS_Command("sideload\n"))
 						break;
 				} else if (strncmp(argptr, "stages", strlen("stages")) == 0) {
 					LOGINFO("ignoring stages command\n");
 				}
 			} else if (*argptr == 'r') {
 				if (strncmp(argptr, "reason", strlen("reason")) == 0) {
 					ptr = argptr + strlen("reason") + 1;
 					gui_print("%s\n", 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("/system/bin/runatboot.sh", "boot");
 	TWFunc::check_and_run_script("/system/bin/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

 	if (!PartitionManager.Get_Super_Status())
 		Decrypt_Page(SkipDecryption, datamedia);

 	// Fixup the RTC clock on devices which require it
 	if (crash_counter == 0)
 		TWFunc::Fixup_Time_On_Boot();

 	if (!PartitionManager.Get_Super_Status())
 		DataManager::ReadSettingsFile();
 	PageManager::LoadLanguage(DataManager::GetStrValue("tw_language"));
 	GUIConsole::Translate_Now();

 	// Run any outstanding OpenRecoveryScript
 	std::string cacheDir = TWFunc::get_log_dir();
 	if (cacheDir == DATA_LOGS_DIR)
 		cacheDir = "/data/cache";
 	std::string orsFile = cacheDir + "/recovery/openrecoveryscript";
 	if ((DataManager::GetIntValue(TW_IS_ENCRYPTED) == 0 || SkipDecryption) && (TWFunc::Path_Exists(SCRIPT_FILE_TMP) || TWFunc::Path_Exists(orsFile))) {
 		OpenRecoveryScript::Run_OpenRecoveryScript();
 	}

 #ifdef TW_HAS_MTP
 	char mtp_crash_check[PROPERTY_VALUE_MAX];
 	property_get("mtp.crash_check", mtp_crash_check, "0");
 	if (DataManager::GetIntValue("tw_mtp_enabled")
 			&& !strcmp(mtp_crash_check, "0") && !crash_counter
 			&& (!DataManager::GetIntValue(TW_IS_ENCRYPTED) || DataManager::GetIntValue(TW_IS_DECRYPTED))) {
 		property_set("mtp.crash_check", "1");
 		LOGINFO("Starting MTP\n");
 		if (!PartitionManager.Enable_MTP())
 			PartitionManager.Disable_MTP();
 		else
 			gui_msg("mtp_enabled=MTP Enabled");
 		property_set("mtp.crash_check", "0");
 	} else if (strcmp(mtp_crash_check, "0")) {
 		gui_warn("mtp_crash=MTP Crashed, not starting MTP on boot.");
 		DataManager::SetValue("tw_mtp_enabled", 0);
 		PartitionManager.Disable_MTP();
 	} else if (crash_counter == 1) {
 		LOGINFO("TWRP crashed; disabling MTP as a precaution.\n");
 		PartitionManager.Disable_MTP();
 	}
 #endif

 #ifndef TW_OEM_BUILD
 	// Check if system has never been changed
 	TWPartition* sys = PartitionManager.Find_Partition_By_Path(PartitionManager.Get_Android_Root_Path());
 	TWPartition* ven = PartitionManager.Find_Partition_By_Path("/vendor");
 	if (sys) {
 		if (sys->Get_Super_Status()) {
 			if (!PartitionManager.Prepare_All_Super_Volumes()) {
 				LOGERR("Unable to prepare super volumes.\n");
 			}
 			sys->Mount(true);
 			if (ven) {
 				ven->Mount(true);
 			}
 			twrpApex apex;
 			if (!apex.loadApexImages()) {
 				LOGERR("Unable to load apex images from %s\n", APEX_DIR);
 			}
 			property_set("twrp.apex.loaded", "true");
 #ifdef TW_INCLUDE_CRYPTO
 			PartitionManager.Decrypt_Data();
 			Decrypt_Page(SkipDecryption, datamedia);
 			std::string recoveryLogDir(DATA_LOGS_DIR);
 			recoveryLogDir += "/recovery";
 			if (!TWFunc::Path_Exists(recoveryLogDir)) {
 				bool created = PartitionManager.Recreate_Logs_Dir();
 				if (!created)
 					LOGERR("Unable to create log directory for TWRP\n");
 			}
 			DataManager::ReadSettingsFile();
 #endif
 		} else {
 			if ((DataManager::GetIntValue("tw_mount_system_ro") == 0 && sys->Check_Lifetime_Writes() == 0) || DataManager::GetIntValue("tw_mount_system_ro") == 2) {
 				if (DataManager::GetIntValue("tw_never_show_system_ro_page") == 0) {
 					DataManager::SetValue("tw_back", "main");
 					if (gui_startPage("system_readonly", 1, 1) != 0) {
 						LOGERR("Failed to start system_readonly GUI page.\n");
 					}
 				} else if (DataManager::GetIntValue("tw_mount_system_ro") == 0) {
 					sys->Change_Mount_Read_Only(false);
 					if (ven)
 						ven->Change_Mount_Read_Only(false);
 				}
 			} else if (DataManager::GetIntValue("tw_mount_system_ro") == 1) {
 				// Do nothing, user selected to leave system read only
 			} else {
 				sys->Change_Mount_Read_Only(false);
 				if (ven)
 					ven->Change_Mount_Read_Only(false);
 			}
 		}
 	}
 #endif
 // We are doing this here to allow super partition to be set up prior to overriding properties
 #if defined(TW_INCLUDE_LIBRESETPROP) && defined(TW_OVERRIDE_SYSTEM_PROPS)
 	if (!PartitionManager.Mount_By_Path(PartitionManager.Get_Android_Root_Path(), true)) {
 		LOGERR("Unable to mount %s\n", PartitionManager.Get_Android_Root_Path().c_str());
 	} else {
 		stringstream override_props(EXPAND(TW_OVERRIDE_SYSTEM_PROPS));
 		string current_prop;
 		while (getline(override_props, current_prop, ';')) {
 			string other_prop;
 			if (current_prop.find("=") != string::npos) {
 				other_prop = current_prop.substr(current_prop.find("=") + 1);
 				current_prop = current_prop.substr(0, current_prop.find("="));
 			} else {
 				other_prop = current_prop;
 			}
 			other_prop = android::base::Trim(other_prop);
 			current_prop = android::base::Trim(current_prop);
 			string sys_val = TWFunc::System_Property_Get(other_prop, PartitionManager, PartitionManager.Get_Android_Root_Path().c_str());
 			if (!sys_val.empty()) {
 				LOGINFO("Overriding %s with value: \"%s\" from system property %s\n", current_prop.c_str(), sys_val.c_str(), other_prop.c_str());
 				int error = TWFunc::Property_Override(current_prop, sys_val);
 				if (error) {
 					LOGERR("Failed overriding property %s, error_code: %d\n", current_prop.c_str(), error);
 				}
 			} else {
 				LOGINFO("Not overriding %s with empty value from system property %s\n", current_prop.c_str(), other_prop.c_str());
 			}
 		}
 		PartitionManager.UnMount_By_Path(PartitionManager.Get_Android_Root_Path(), false);
 	}
 #endif

 	TWFunc::Update_Log_File();

 	twrpAdbBuFifo *adb_bu_fifo = new twrpAdbBuFifo();
 	adb_bu_fifo->threadAdbBuFifo();

 	// Launch the main GUI
 	gui_start();

 #ifndef TW_OEM_BUILD
 	// Disable flashing of stock recovery
 	TWFunc::Disable_Stock_Recovery_Replace();
 #endif

 	// Reboot
 	TWFunc::Update_Intent_File(Send_Intent);
 	delete adb_bu_fifo;
 	TWFunc::Update_Log_File();
 	gui_msg(Msg("rebooting=Rebooting..."));
 	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 if (Reboot_Arg == "edl")
 		TWFunc::tw_reboot(rb_edl);
 	else
 		TWFunc::tw_reboot(rb_system);

 	return 0;
 }
	/*
	TWRP is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	TWRP is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with TWRP. If not, see <http://www.gnu.org/licenses/>.
	*/

	#include <stdio.h>
	#include <stdlib.h>
	#include <string>
	#include <sys/stat.h>
	#include <sys/types.h>
	#include <time.h>
	#include <unistd.h>
	#include <signal.h>
	#include "gui/twmsg.h"

	#include "cutils/properties.h"
	#include "bootloader_message_twrp/include/bootloader_message_twrp/bootloader_message.h"

	#ifdef ANDROID_RB_RESTART
	#include "cutils/android_reboot.h"
	#else
	#include <sys/reboot.h>
	#endif

	extern "C" {
	#include "gui/gui.h"
	}
	#include "set_metadata.h"
	#include "gui/gui.hpp"
	#include "gui/pages.hpp"
	#include "gui/objects.hpp"
	#include "twcommon.h"
	#include "twrp-functions.hpp"
	#include "data.hpp"
	#include "partitions.hpp"
	#ifdef __ANDROID_API_N__
	#include <android-base/strings.h>
	#else
	#include <base/strings.h>
	#endif
	#include "openrecoveryscript.hpp"
	#include "variables.h"
	#include "twrpAdbBuFifo.hpp"
	#include "twrpApex.hpp"
	#ifdef TW_USE_NEW_MINADBD
	// #include "minadbd/minadbd.h"
	#else
	extern "C" {
	#include "minadbd21/adb.h"
	}
	#endif

	//extern int adb_server_main(int is_daemon, int server_port, int /* reply_fd */);

	TWPartitionManager PartitionManager;
	int Log_Offset;
	bool datamedia;

	static void Print_Prop(const char key, const char name, void *cookie) {
	printf("%s=%s\n", key, name);
	}

	static void Decrypt_Page(bool SkipDecryption, bool datamedia) {
	// Offer to decrypt if the device is encrypted
	if (DataManager::GetIntValue(TW_IS_ENCRYPTED) != 0) {
	if (SkipDecryption) {
	LOGINFO("Skipping decryption\n");
	} else {
	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
	TWFunc::check_selinux_support();
	gui_loadCustomResources();
	}
	}
	} else if (datamedia) {
	TWFunc::check_selinux_support();
	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");
	}
	}
	}

	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");
	#ifdef TW_USE_NEW_MINADBD
	//adb_server_main(0, DEFAULT_ADB_PORT, -1); TODO fix this for android8
	// minadbd_main();
	#else
	adb_main(argv[2]);
	#endif
	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-%s on %s (pid %d)\n", TW_VERSION_STR, TW_GIT_REVISION, ctime(&StartupTime), getpid());

	// Load default values to set DataManager constants and handle ifdefs
	DataManager::SetDefaultValues();
	printf("Starting the UI...\n");
	gui_init();
	printf("=> Linking mtab\n");
	symlink("/proc/mounts", "/etc/mtab");
	std::string fstab_filename = "/etc/twrp.fstab";
	if (!TWFunc::Path_Exists(fstab_filename)) {
	fstab_filename = "/etc/recovery.fstab";
	}

	// Begin SAR detection
	{
	TWPartitionManager SarPartitionManager;
	printf("=> Processing %s for SAR-detection\n", fstab_filename.c_str());
	if (!SarPartitionManager.Process_Fstab(fstab_filename, 1, 1)) {
	LOGERR("Failing out of recovery due to problem with fstab.\n");
	return -1;
	}

	mkdir("/s", 0755);

	#if defined(AB_OTA_UPDATER) \|\| defined(__ANDROID_API_Q__)
	bool fallback_sar = true;
	#else
	bool fallback_sar = property_get_bool("ro.build.system_root_image", false);
	#endif

	if(SarPartitionManager.Mount_By_Path("/s", false)) {
	if (TWFunc::Path_Exists("/s/build.prop")) {
	LOGINFO("SAR-DETECT: Non-SAR System detected\n");
	property_set("ro.twrp.sar", "0");
	rmdir("/system_root");
	} else if (TWFunc::Path_Exists("/s/system/build.prop")) {
	LOGINFO("SAR-DETECT: SAR System detected\n");
	property_set("ro.twrp.sar", "1");
	} else {
	LOGINFO("SAR-DETECT: No build.prop found, falling back to %s\n", fallback_sar ? "SAR" : "Non-SAR");
	property_set("ro.twrp.sar", fallback_sar ? "1" : "0");
	}

	SarPartitionManager.UnMount_By_Path("/s", false);
	} else {
	LOGINFO("SAR-DETECT: Could not mount system partition, falling back to %s\n", fallback_sar ? "SAR":"Non-SAR");
	property_set("ro.twrp.sar", fallback_sar ? "1" : "0");
	}

	rmdir("/s");

	TWFunc::check_and_run_script("/system/bin/sarsetup.sh", "boot");
	}
	// End SAR detection

	printf("=> Processing %s\n", fstab_filename.c_str());
	if (!PartitionManager.Process_Fstab(fstab_filename, 1, 0)) {
	LOGERR("Failing out of recovery due to problem with fstab.\n");
	return -1;
	}
	PartitionManager.Output_Partition_Logging();
	#ifdef TW_INCLUDE_CRYPTO
	DataManager::SetValue(TW_IS_ENCRYPTED, 1);
	#endif

	if (PartitionManager.Get_Super_Status()) {
	PartitionManager.Setup_Super_Devices();
	PartitionManager.Setup_Super_Partition();
	} else {
	#ifdef TW_INCLUDE_CRYPTO
	if (!PartitionManager.Get_Super_Status())
	PartitionManager.Decrypt_Data();
	#endif
	}

	// Load up all the resources
	gui_loadResources();

	bool Shutdown = false;
	bool SkipDecryption = false;
	string Send_Intent = "";
	{
	TWPartition* misc = PartitionManager.Find_Partition_By_Path("/misc");
	if (misc != NULL) {
	if (misc->Current_File_System == "emmc") {
	set_misc_device(misc->Actual_Block_Device.c_str());
	} else {
	LOGERR("Only emmc /misc is supported\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) {
	string ORSCommand = "install ";
	ORSCommand.append(ptr);

	// If we have a map of blocks we don't need to mount data.
	SkipDecryption = *ptr == '@';

	if (!OpenRecoveryScript::Insert_ORS_Command(ORSCommand))
	break;
	} else
	LOGERR("argument error specifying zip file\n");
	} else if (*argptr == 'w') {
	if (len == 9) {
	if (!OpenRecoveryScript::Insert_ORS_Command("wipe data\n"))
	break;
	} else if (len == 10) {
	if (!OpenRecoveryScript::Insert_ORS_Command("wipe cache\n"))
	break;
	}
	// Other 'w' items are wipe_ab and wipe_package_size which are related to bricking the device remotely. We will not bother to suppor these as having TWRP probably makes "bricking" the device in this manner useless
	} else if (*argptr == 'n') {
	DataManager::SetValue(TW_BACKUP_NAME, gui_parse_text("{@auto_generate}"));
	if (!OpenRecoveryScript::Insert_ORS_Command("backup BSDCAE\n"))
	break;
	} else if (*argptr == 'p') {
	Shutdown = true;
	} else if (*argptr == 's') {
	if (strncmp(argptr, "send_intent", strlen("send_intent")) == 0) {
	ptr = argptr + strlen("send_intent") + 1;
	Send_Intent = *ptr;
	} else if (strncmp(argptr, "security", strlen("security")) == 0) {
	LOGINFO("Security update\n");
	} else if (strncmp(argptr, "sideload", strlen("sideload")) == 0) {
	if (!OpenRecoveryScript::Insert_ORS_Command("sideload\n"))
	break;
	} else if (strncmp(argptr, "stages", strlen("stages")) == 0) {
	LOGINFO("ignoring stages command\n");
	}
	} else if (*argptr == 'r') {
	if (strncmp(argptr, "reason", strlen("reason")) == 0) {
	ptr = argptr + strlen("reason") + 1;
	gui_print("%s\n", 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("/system/bin/runatboot.sh", "boot");
	TWFunc::check_and_run_script("/system/bin/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

	if (!PartitionManager.Get_Super_Status())
	Decrypt_Page(SkipDecryption, datamedia);

	// Fixup the RTC clock on devices which require it
	if (crash_counter == 0)
	TWFunc::Fixup_Time_On_Boot();

	if (!PartitionManager.Get_Super_Status())
	DataManager::ReadSettingsFile();
	PageManager::LoadLanguage(DataManager::GetStrValue("tw_language"));
	GUIConsole::Translate_Now();

	// Run any outstanding OpenRecoveryScript
	std::string cacheDir = TWFunc::get_log_dir();
	if (cacheDir == DATA_LOGS_DIR)
	cacheDir = "/data/cache";
	std::string orsFile = cacheDir + "/recovery/openrecoveryscript";
	if ((DataManager::GetIntValue(TW_IS_ENCRYPTED) == 0 \|\| SkipDecryption) && (TWFunc::Path_Exists(SCRIPT_FILE_TMP) \|\| TWFunc::Path_Exists(orsFile))) {
	OpenRecoveryScript::Run_OpenRecoveryScript();
	}

	#ifdef TW_HAS_MTP
	char mtp_crash_check[PROPERTY_VALUE_MAX];
	property_get("mtp.crash_check", mtp_crash_check, "0");
	if (DataManager::GetIntValue("tw_mtp_enabled")
	&& !strcmp(mtp_crash_check, "0") && !crash_counter
	&& (!DataManager::GetIntValue(TW_IS_ENCRYPTED) \|\| DataManager::GetIntValue(TW_IS_DECRYPTED))) {
	property_set("mtp.crash_check", "1");
	LOGINFO("Starting MTP\n");
	if (!PartitionManager.Enable_MTP())
	PartitionManager.Disable_MTP();
	else
	gui_msg("mtp_enabled=MTP Enabled");
	property_set("mtp.crash_check", "0");
	} else if (strcmp(mtp_crash_check, "0")) {
	gui_warn("mtp_crash=MTP Crashed, not starting MTP on boot.");
	DataManager::SetValue("tw_mtp_enabled", 0);
	PartitionManager.Disable_MTP();
	} else if (crash_counter == 1) {
	LOGINFO("TWRP crashed; disabling MTP as a precaution.\n");
	PartitionManager.Disable_MTP();
	}
	#endif

	#ifndef TW_OEM_BUILD
	// Check if system has never been changed
	TWPartition* sys = PartitionManager.Find_Partition_By_Path(PartitionManager.Get_Android_Root_Path());
	TWPartition* ven = PartitionManager.Find_Partition_By_Path("/vendor");
	if (sys) {
	if (sys->Get_Super_Status()) {
	if (!PartitionManager.Prepare_All_Super_Volumes()) {
	LOGERR("Unable to prepare super volumes.\n");
	}
	sys->Mount(true);
	if (ven) {
	ven->Mount(true);
	}
	twrpApex apex;
	if (!apex.loadApexImages()) {
	LOGERR("Unable to load apex images from %s\n", APEX_DIR);
	}
	property_set("twrp.apex.loaded", "true");
	#ifdef TW_INCLUDE_CRYPTO
	PartitionManager.Decrypt_Data();
	Decrypt_Page(SkipDecryption, datamedia);
	std::string recoveryLogDir(DATA_LOGS_DIR);
	recoveryLogDir += "/recovery";
	if (!TWFunc::Path_Exists(recoveryLogDir)) {
	bool created = PartitionManager.Recreate_Logs_Dir();
	if (!created)
	LOGERR("Unable to create log directory for TWRP\n");
	}
	DataManager::ReadSettingsFile();
	#endif
	} else {
	if ((DataManager::GetIntValue("tw_mount_system_ro") == 0 && sys->Check_Lifetime_Writes() == 0) \|\| DataManager::GetIntValue("tw_mount_system_ro") == 2) {
	if (DataManager::GetIntValue("tw_never_show_system_ro_page") == 0) {
	DataManager::SetValue("tw_back", "main");
	if (gui_startPage("system_readonly", 1, 1) != 0) {
	LOGERR("Failed to start system_readonly GUI page.\n");
	}
	} else if (DataManager::GetIntValue("tw_mount_system_ro") == 0) {
	sys->Change_Mount_Read_Only(false);
	if (ven)
	ven->Change_Mount_Read_Only(false);
	}
	} else if (DataManager::GetIntValue("tw_mount_system_ro") == 1) {
	// Do nothing, user selected to leave system read only
	} else {
	sys->Change_Mount_Read_Only(false);
	if (ven)
	ven->Change_Mount_Read_Only(false);
	}
	}
	}
	#endif
	// We are doing this here to allow super partition to be set up prior to overriding properties
	#if defined(TW_INCLUDE_LIBRESETPROP) && defined(TW_OVERRIDE_SYSTEM_PROPS)
	if (!PartitionManager.Mount_By_Path(PartitionManager.Get_Android_Root_Path(), true)) {
	LOGERR("Unable to mount %s\n", PartitionManager.Get_Android_Root_Path().c_str());
	} else {
	stringstream override_props(EXPAND(TW_OVERRIDE_SYSTEM_PROPS));
	string current_prop;
	while (getline(override_props, current_prop, ';')) {
	string other_prop;
	if (current_prop.find("=") != string::npos) {
	other_prop = current_prop.substr(current_prop.find("=") + 1);
	current_prop = current_prop.substr(0, current_prop.find("="));
	} else {
	other_prop = current_prop;
	}
	other_prop = android::base::Trim(other_prop);
	current_prop = android::base::Trim(current_prop);
	string sys_val = TWFunc::System_Property_Get(other_prop, PartitionManager, PartitionManager.Get_Android_Root_Path().c_str());
	if (!sys_val.empty()) {
	LOGINFO("Overriding %s with value: \"%s\" from system property %s\n", current_prop.c_str(), sys_val.c_str(), other_prop.c_str());
	int error = TWFunc::Property_Override(current_prop, sys_val);
	if (error) {
	LOGERR("Failed overriding property %s, error_code: %d\n", current_prop.c_str(), error);
	}
	} else {
	LOGINFO("Not overriding %s with empty value from system property %s\n", current_prop.c_str(), other_prop.c_str());
	}
	}
	PartitionManager.UnMount_By_Path(PartitionManager.Get_Android_Root_Path(), false);
	}
	#endif

	TWFunc::Update_Log_File();

	twrpAdbBuFifo *adb_bu_fifo = new twrpAdbBuFifo();
	adb_bu_fifo->threadAdbBuFifo();

	// Launch the main GUI
	gui_start();

	#ifndef TW_OEM_BUILD
	// Disable flashing of stock recovery
	TWFunc::Disable_Stock_Recovery_Replace();
	#endif

	// Reboot
	TWFunc::Update_Intent_File(Send_Intent);
	delete adb_bu_fifo;
	TWFunc::Update_Log_File();
	gui_msg(Msg("rebooting=Rebooting..."));
	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 if (Reboot_Arg == "edl")
	TWFunc::tw_reboot(rb_edl);
	else
	TWFunc::tw_reboot(rb_system);

	return 0;
	}