| /* |
| 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.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <time.h> |
| #include <unistd.h> |
| #include <signal.h> |
| |
| #include "cutils/properties.h" |
| extern "C" { |
| #include "minadbd/adb.h" |
| #include "bootloader.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 "twcommon.h" |
| #include "twrp-functions.hpp" |
| #include "data.hpp" |
| #include "partitions.hpp" |
| #include "openrecoveryscript.hpp" |
| #include "variables.h" |
| #include "twrpDU.hpp" |
| |
| #ifdef HAVE_SELINUX |
| #include "selinux/label.h" |
| struct selabel_handle *selinux_handle; |
| #endif |
| |
| TWPartitionManager PartitionManager; |
| int Log_Offset; |
| bool datamedia; |
| twrpDU du; |
| |
| static void Print_Prop(const char *key, const char *name, void *cookie) { |
| printf("%s=%s\n", key, name); |
| } |
| |
| 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_misc_device("emmc", misc->Actual_Block_Device.c_str()); |
| } else if (misc->Current_File_System == "mtd") { |
| set_misc_device("mtd", 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 |
| |
| #ifndef TW_OEM_BUILD |
| // Check if system has never been changed |
| TWPartition* sys = PartitionManager.Find_Partition_By_Path("/system"); |
| if (sys) { |
| 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); |
| } |
| } 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); |
| } |
| } |
| #endif |
| |
| // Launch the main GUI |
| gui_start(); |
| |
| #ifndef TW_OEM_BUILD |
| // 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) && DataManager::GetIntValue("tw_mount_system_ro") == 0) { |
| 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); |
| } |
| #endif |
| |
| // 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; |
| } |