twrp.cpp - android_bootable_recovery - Gitiles

 /*
 	Copyright 2012-2020 TeamWin
 	This file is part of TWRP/TeamWin Recovery Project.

 	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"

 #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 "kernel_module_loader.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 "startupArgs.hpp"
 #include "twrpAdbBuFifo.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");
 			PartitionManager.Update_System_Details();
 		} else if (DataManager::GetIntValue(TW_CRYPTO_PWTYPE) != 0) {
 			LOGINFO("Is encrypted, do decrypt page first\n");
 			if (DataManager::GetIntValue(TW_IS_FBE))
 				DataManager::SetValue("tw_crypto_user_id", "0");
 			if (gui_startPage("decrypt", 1, 1) != 0) {
 				LOGERR("Failed to start decrypt GUI page.\n");
 			}
 		}
 	} else if (datamedia) {
 		PartitionManager.Update_System_Details();
 		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");
 		}
 	}
 }

 static void process_fastbootd_mode() {
 		LOGINFO("starting fastboot\n");

 #ifdef TW_LOAD_VENDOR_MODULES
 		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";
 		}
 		printf("=> Processing %s\n", fstab_filename.c_str());
 		if (!PartitionManager.Process_Fstab(fstab_filename, 1, false)) {
 			LOGERR("Failing out of recovery due to problem with fstab.\n");
 			return;
 		}
 		TWPartition* ven = PartitionManager.Find_Partition_By_Path("/vendor");
 		PartitionManager.Setup_Super_Devices();
 		PartitionManager.Prepare_Super_Volume(ven);
 		KernelModuleLoader::Load_Vendor_Modules();
 		if (android::base::GetBoolProperty("ro.virtual_ab.enabled", false)) {
 			PartitionManager.Unmap_Super_Devices();
 		}
 #endif

 		gui_msg(Msg("fastboot_console_msg=Entered Fastboot mode..."));
 		// 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/postfastboot.sh", "fastboot");
 		if (gui_startPage("fastboot", 1, 1) != 0) {
 			LOGERR("Failed to start fastbootd page.\n");
 		}
 }

 static void process_recovery_mode(twrpAdbBuFifo* adb_bu_fifo, bool skip_decryption) {
 	char crash_prop_val[PROPERTY_VALUE_MAX];
 	int crash_counter;
 	std::string cmdline;
 	if (TWFunc::read_file("/proc/cmdline", cmdline) != 0) {
 		LOGINFO("Unable to read cmdline for fastboot mode\n");
 	}

 	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);

 	if (crash_counter == 0) {
 		property_list(Print_Prop, NULL);
 		printf("\n");
 	} else {
 		printf("twrp.crash_counter=%d\n", crash_counter);
 	}

 	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";
 	}
 	printf("=> Processing %s\n", fstab_filename.c_str());
 	if (!PartitionManager.Process_Fstab(fstab_filename, 1, true)) {
 		LOGERR("Failing out of recovery due to problem with fstab.\n");
 		return;
 	}

 #ifdef TW_LOAD_VENDOR_MODULES
 	bool fastboot_mode = cmdline.find("twrpfastboot=1") != std::string::npos;
 	if (fastboot_mode)
 		KernelModuleLoader::Load_Vendor_Modules();
 	else
 		KernelModuleLoader::Load_Vendor_Modules();
 #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)
 	stringstream override_props(EXPAND(TW_OVERRIDE_SYSTEM_PROPS));
 	string current_prop;

 	std::vector<std::string> partition_list;
 	partition_list.push_back (PartitionManager.Get_Android_Root_Path().c_str());
 #ifdef TW_OVERRIDE_PROPS_ADDITIONAL_PARTITIONS
 	std::vector<std::string> additional_partition_list = TWFunc::Split_String(TW_OVERRIDE_PROPS_ADDITIONAL_PARTITIONS, " ");
 	partition_list.insert(partition_list.end(), additional_partition_list.begin(), additional_partition_list.end());
 #endif
 	std::vector<std::string> build_prop_list = {"build.prop"};
 #ifdef TW_SYSTEM_BUILD_PROP_ADDITIONAL_PATHS
 	std::vector<std::string> additional_build_prop_list = TWFunc::Split_String(TW_SYSTEM_BUILD_PROP_ADDITIONAL_PATHS, ";");
 	build_prop_list.insert(build_prop_list.end(), additional_build_prop_list.begin(), additional_build_prop_list.end());
 #endif
 	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);

 		for (auto&& partition_mount_point:partition_list) {
 			for (auto&& prop_file:build_prop_list) {
 				string sys_val = TWFunc::Partition_Property_Get(other_prop, PartitionManager, partition_mount_point.c_str(), prop_file);
 				if (!sys_val.empty()) {
 					if (partition_mount_point == "/system_root") {
 						LOGINFO("Overriding %s with value: \"%s\" from property %s in /system/%s\n", current_prop.c_str(), sys_val.c_str(), other_prop.c_str(),
 							prop_file.c_str());
 					} else {
 						LOGINFO("Overriding %s with value: \"%s\" from property %s in /%s/%s\n", current_prop.c_str(), sys_val.c_str(), other_prop.c_str(),
 							partition_mount_point.c_str(), prop_file.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);
 					}
 					if (partition_mount_point == partition_list.back()) {
 						PartitionManager.UnMount_By_Path(partition_mount_point, false);
 					}
 					goto exit;
 				} else {
 					if (partition_mount_point == "/system_root") {
 						LOGINFO("Unable to override property %s: property not found in /system/%s\n", current_prop.c_str(), prop_file.c_str());
 					} else {
 						LOGINFO("Unable to override property %s: property not found in /%s/%s\n", current_prop.c_str(), partition_mount_point.c_str(), prop_file.c_str());
 					}
 				}
 			}
 			PartitionManager.UnMount_By_Path(partition_mount_point, false);
 		}
 		exit:
 		continue;
 	}
 #endif

 	// 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", "recovery");

 #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

 	Decrypt_Page(skip_decryption, datamedia);
 	// Check for and load custom theme if present
 	TWFunc::check_selinux_support();
 	gui_loadCustomResources();
 	PartitionManager.Output_Partition_Logging();

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

 	DataManager::LoadTWRPFolderInfo();
 	DataManager::ReadSettingsFile();

 	// 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 || skip_decryption) && (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()) {
 #ifdef TW_INCLUDE_CRYPTO
 			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

 	TWFunc::Update_Log_File();

 	adb_bu_fifo->threadAdbBuFifo();

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

 static void reboot() {
 	gui_msg(Msg("rebooting=Rebooting..."));
 	TWFunc::Update_Log_File();
 	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 if (Reboot_Arg == "fastboot")
 		TWFunc::tw_reboot(rb_fastboot);
 	else
 		TWFunc::tw_reboot(rb_system);
 }

 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

 	property_set("ro.twrp.boot", "1");
 	property_set("ro.twrp.version", TW_VERSION_STR);

 #ifdef TARGET_OTA_ASSERT_DEVICE
 	property_set("ro.twrp.target.devices", TARGET_OTA_ASSERT_DEVICE);
 #endif

 	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();

 	// Load up all the resources
 	gui_loadResources();

 	startupArgs startup;
 	startup.parse(&argc, &argv);
 	twrpAdbBuFifo *adb_bu_fifo = new twrpAdbBuFifo();
 	TWFunc::Clear_Bootloader_Message();

 	if (startup.Get_Fastboot_Mode()) {
 		process_fastbootd_mode();
 		delete adb_bu_fifo;
 		TWFunc::Update_Intent_File(startup.Get_Intent());
 		reboot();
 		return 0;
 	} else {
 		process_recovery_mode(adb_bu_fifo, startup.Should_Skip_Decryption());
 	}

 	PageManager::LoadLanguage(DataManager::GetStrValue("tw_language"));
 	GUIConsole::Translate_Now();

 	TWFunc::checkforapp(); //Checking compatibility for TWRP app

 	// Launch the main GUI
 	gui_start();
 	delete adb_bu_fifo;
 	TWFunc::Update_Intent_File(startup.Get_Intent());
 	reboot();

 	return 0;
 }
	/*
	Copyright 2012-2020 TeamWin
	This file is part of TWRP/TeamWin Recovery Project.

	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"

	#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 "kernel_module_loader.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 "startupArgs.hpp"
	#include "twrpAdbBuFifo.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");
	PartitionManager.Update_System_Details();
	} else if (DataManager::GetIntValue(TW_CRYPTO_PWTYPE) != 0) {
	LOGINFO("Is encrypted, do decrypt page first\n");
	if (DataManager::GetIntValue(TW_IS_FBE))
	DataManager::SetValue("tw_crypto_user_id", "0");
	if (gui_startPage("decrypt", 1, 1) != 0) {
	LOGERR("Failed to start decrypt GUI page.\n");
	}
	}
	} else if (datamedia) {
	PartitionManager.Update_System_Details();
	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");
	}
	}
	}

	static void process_fastbootd_mode() {
	LOGINFO("starting fastboot\n");

	#ifdef TW_LOAD_VENDOR_MODULES
	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";
	}
	printf("=> Processing %s\n", fstab_filename.c_str());
	if (!PartitionManager.Process_Fstab(fstab_filename, 1, false)) {
	LOGERR("Failing out of recovery due to problem with fstab.\n");
	return;
	}
	TWPartition* ven = PartitionManager.Find_Partition_By_Path("/vendor");
	PartitionManager.Setup_Super_Devices();
	PartitionManager.Prepare_Super_Volume(ven);
	KernelModuleLoader::Load_Vendor_Modules();
	if (android::base::GetBoolProperty("ro.virtual_ab.enabled", false)) {
	PartitionManager.Unmap_Super_Devices();
	}
	#endif

	gui_msg(Msg("fastboot_console_msg=Entered Fastboot mode..."));
	// 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/postfastboot.sh", "fastboot");
	if (gui_startPage("fastboot", 1, 1) != 0) {
	LOGERR("Failed to start fastbootd page.\n");
	}
	}

	static void process_recovery_mode(twrpAdbBuFifo* adb_bu_fifo, bool skip_decryption) {
	char crash_prop_val[PROPERTY_VALUE_MAX];
	int crash_counter;
	std::string cmdline;
	if (TWFunc::read_file("/proc/cmdline", cmdline) != 0) {
	LOGINFO("Unable to read cmdline for fastboot mode\n");
	}

	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);

	if (crash_counter == 0) {
	property_list(Print_Prop, NULL);
	printf("\n");
	} else {
	printf("twrp.crash_counter=%d\n", crash_counter);
	}

	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";
	}
	printf("=> Processing %s\n", fstab_filename.c_str());
	if (!PartitionManager.Process_Fstab(fstab_filename, 1, true)) {
	LOGERR("Failing out of recovery due to problem with fstab.\n");
	return;
	}

	#ifdef TW_LOAD_VENDOR_MODULES
	bool fastboot_mode = cmdline.find("twrpfastboot=1") != std::string::npos;
	if (fastboot_mode)
	KernelModuleLoader::Load_Vendor_Modules();
	else
	KernelModuleLoader::Load_Vendor_Modules();
	#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)
	stringstream override_props(EXPAND(TW_OVERRIDE_SYSTEM_PROPS));
	string current_prop;

	std::vector<std::string> partition_list;
	partition_list.push_back (PartitionManager.Get_Android_Root_Path().c_str());
	#ifdef TW_OVERRIDE_PROPS_ADDITIONAL_PARTITIONS
	std::vector<std::string> additional_partition_list = TWFunc::Split_String(TW_OVERRIDE_PROPS_ADDITIONAL_PARTITIONS, " ");
	partition_list.insert(partition_list.end(), additional_partition_list.begin(), additional_partition_list.end());
	#endif
	std::vector<std::string> build_prop_list = {"build.prop"};
	#ifdef TW_SYSTEM_BUILD_PROP_ADDITIONAL_PATHS
	std::vector<std::string> additional_build_prop_list = TWFunc::Split_String(TW_SYSTEM_BUILD_PROP_ADDITIONAL_PATHS, ";");
	build_prop_list.insert(build_prop_list.end(), additional_build_prop_list.begin(), additional_build_prop_list.end());
	#endif
	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);

	for (auto&& partition_mount_point:partition_list) {
	for (auto&& prop_file:build_prop_list) {
	string sys_val = TWFunc::Partition_Property_Get(other_prop, PartitionManager, partition_mount_point.c_str(), prop_file);
	if (!sys_val.empty()) {
	if (partition_mount_point == "/system_root") {
	LOGINFO("Overriding %s with value: \"%s\" from property %s in /system/%s\n", current_prop.c_str(), sys_val.c_str(), other_prop.c_str(),
	prop_file.c_str());
	} else {
	LOGINFO("Overriding %s with value: \"%s\" from property %s in /%s/%s\n", current_prop.c_str(), sys_val.c_str(), other_prop.c_str(),
	partition_mount_point.c_str(), prop_file.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);
	}
	if (partition_mount_point == partition_list.back()) {
	PartitionManager.UnMount_By_Path(partition_mount_point, false);
	}
	goto exit;
	} else {
	if (partition_mount_point == "/system_root") {
	LOGINFO("Unable to override property %s: property not found in /system/%s\n", current_prop.c_str(), prop_file.c_str());
	} else {
	LOGINFO("Unable to override property %s: property not found in /%s/%s\n", current_prop.c_str(), partition_mount_point.c_str(), prop_file.c_str());
	}
	}
	}
	PartitionManager.UnMount_By_Path(partition_mount_point, false);
	}
	exit:
	continue;
	}
	#endif

	// 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", "recovery");

	#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

	Decrypt_Page(skip_decryption, datamedia);
	// Check for and load custom theme if present
	TWFunc::check_selinux_support();
	gui_loadCustomResources();
	PartitionManager.Output_Partition_Logging();

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

	DataManager::LoadTWRPFolderInfo();
	DataManager::ReadSettingsFile();

	// 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 \|\| skip_decryption) && (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()) {
	#ifdef TW_INCLUDE_CRYPTO
	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

	TWFunc::Update_Log_File();

	adb_bu_fifo->threadAdbBuFifo();

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

	static void reboot() {
	gui_msg(Msg("rebooting=Rebooting..."));
	TWFunc::Update_Log_File();
	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 if (Reboot_Arg == "fastboot")
	TWFunc::tw_reboot(rb_fastboot);
	else
	TWFunc::tw_reboot(rb_system);
	}

	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

	property_set("ro.twrp.boot", "1");
	property_set("ro.twrp.version", TW_VERSION_STR);

	#ifdef TARGET_OTA_ASSERT_DEVICE
	property_set("ro.twrp.target.devices", TARGET_OTA_ASSERT_DEVICE);
	#endif

	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();

	// Load up all the resources
	gui_loadResources();

	startupArgs startup;
	startup.parse(&argc, &argv);
	twrpAdbBuFifo *adb_bu_fifo = new twrpAdbBuFifo();
	TWFunc::Clear_Bootloader_Message();

	if (startup.Get_Fastboot_Mode()) {
	process_fastbootd_mode();
	delete adb_bu_fifo;
	TWFunc::Update_Intent_File(startup.Get_Intent());
	reboot();
	return 0;
	} else {
	process_recovery_mode(adb_bu_fifo, startup.Should_Skip_Decryption());
	}

	PageManager::LoadLanguage(DataManager::GetStrValue("tw_language"));
	GUIConsole::Translate_Now();

	TWFunc::checkforapp(); //Checking compatibility for TWRP app

	// Launch the main GUI
	gui_start();
	delete adb_bu_fifo;
	TWFunc::Update_Intent_File(startup.Get_Intent());
	reboot();

	return 0;
	}