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Diffstat (limited to 'twrp-functions.cpp')
| -rw-r--r-- | twrp-functions.cpp | 1298 |
1 files changed, 1298 insertions, 0 deletions
diff --git a/twrp-functions.cpp b/twrp-functions.cpp new file mode 100644 index 000000000..b96245751 --- /dev/null +++ b/twrp-functions.cpp @@ -0,0 +1,1298 @@ +/* + Copyright 2012 bigbiff/Dees_Troy 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 <unistd.h> +#include <vector> +#include <dirent.h> +#include <time.h> +#include <errno.h> +#include <fcntl.h> +#include <sys/mount.h> +#include <sys/reboot.h> +#include <sys/sendfile.h> +#include <sys/stat.h> +#include <sys/vfs.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <iostream> +#include <fstream> +#include <sstream> +#include "twrp-functions.hpp" +#include "twcommon.h" +#ifndef BUILD_TWRPTAR_MAIN +#include "data.hpp" +#include "partitions.hpp" +#include "variables.h" +#include "bootloader.h" +#include "cutils/properties.h" +#ifdef ANDROID_RB_POWEROFF + #include "cutils/android_reboot.h" +#endif +#endif // ndef BUILD_TWRPTAR_MAIN +#ifndef TW_EXCLUDE_ENCRYPTED_BACKUPS + #include "openaes/inc/oaes_lib.h" +#endif + +extern "C" { + #include "libcrecovery/common.h" +} + +/* Execute a command */ +int TWFunc::Exec_Cmd(const string& cmd, string &result) { + FILE* exec; + char buffer[130]; + int ret = 0; + exec = __popen(cmd.c_str(), "r"); + if (!exec) return -1; + while(!feof(exec)) { + memset(&buffer, 0, sizeof(buffer)); + if (fgets(buffer, 128, exec) != NULL) { + buffer[128] = '\n'; + buffer[129] = 0; + result += buffer; + } + } + ret = __pclose(exec); + return ret; +} + +int TWFunc::Exec_Cmd(const string& cmd) { + pid_t pid; + int status; + switch(pid = fork()) + { + case -1: + LOGERR("Exec_Cmd(): vfork failed: %d!\n", errno); + return -1; + case 0: // child + execl("/sbin/sh", "sh", "-c", cmd.c_str(), NULL); + _exit(127); + break; + default: + { + if (TWFunc::Wait_For_Child(pid, &status, cmd) != 0) + return -1; + else + return 0; + } + } +} + +// Returns "file.name" from a full /path/to/file.name +string TWFunc::Get_Filename(string Path) { + size_t pos = Path.find_last_of("/"); + if (pos != string::npos) { + string Filename; + Filename = Path.substr(pos + 1, Path.size() - pos - 1); + return Filename; + } else + return Path; +} + +// Returns "/path/to/" from a full /path/to/file.name +string TWFunc::Get_Path(string Path) { + size_t pos = Path.find_last_of("/"); + if (pos != string::npos) { + string Pathonly; + Pathonly = Path.substr(0, pos + 1); + return Pathonly; + } else + return Path; +} + +int TWFunc::Wait_For_Child(pid_t pid, int *status, string Child_Name) { + pid_t rc_pid; + + rc_pid = waitpid(pid, status, 0); + if (rc_pid > 0) { + if (WEXITSTATUS(*status) == 0) + LOGINFO("%s process ended with RC=%d\n", Child_Name.c_str(), WEXITSTATUS(*status)); // Success + else if (WIFSIGNALED(*status)) { + LOGINFO("%s process ended with signal: %d\n", Child_Name.c_str(), WTERMSIG(*status)); // Seg fault or some other non-graceful termination + return -1; + } else if (WEXITSTATUS(*status) != 0) { + LOGINFO("%s process ended with ERROR=%d\n", Child_Name.c_str(), WEXITSTATUS(*status)); // Graceful exit, but there was an error + return -1; + } + } else { // no PID returned + if (errno == ECHILD) + LOGINFO("%s no child process exist\n", Child_Name.c_str()); + else { + LOGINFO("%s Unexpected error\n", Child_Name.c_str()); + return -1; + } + } + return 0; +} + +bool TWFunc::Path_Exists(string Path) { + // Check to see if the Path exists + struct stat st; + if (stat(Path.c_str(), &st) != 0) + return false; + else + return true; +} + +int TWFunc::Get_File_Type(string fn) { + string::size_type i = 0; + int firstbyte = 0, secondbyte = 0; + char header[3]; + + ifstream f; + f.open(fn.c_str(), ios::in | ios::binary); + f.get(header, 3); + f.close(); + firstbyte = header[i] & 0xff; + secondbyte = header[++i] & 0xff; + + if (firstbyte == 0x1f && secondbyte == 0x8b) + return 1; // Compressed + else if (firstbyte == 0x4f && secondbyte == 0x41) + return 2; // Encrypted + else + return 0; // Unknown + + return 0; +} + +int TWFunc::Try_Decrypting_File(string fn, string password) { +#ifndef TW_EXCLUDE_ENCRYPTED_BACKUPS + OAES_CTX * ctx = NULL; + uint8_t _key_data[32] = ""; + FILE *f; + uint8_t buffer[4096]; + uint8_t *buffer_out = NULL; + uint8_t *ptr = NULL; + size_t read_len = 0, out_len = 0; + int firstbyte = 0, secondbyte = 0, key_len; + size_t _j = 0; + size_t _key_data_len = 0; + + // mostly kanged from OpenAES oaes.c + for( _j = 0; _j < 32; _j++ ) + _key_data[_j] = _j + 1; + _key_data_len = password.size(); + if( 16 >= _key_data_len ) + _key_data_len = 16; + else if( 24 >= _key_data_len ) + _key_data_len = 24; + else + _key_data_len = 32; + memcpy(_key_data, password.c_str(), password.size()); + + ctx = oaes_alloc(); + if (ctx == NULL) { + LOGERR("Failed to allocate OAES\n"); + return -1; + } + + oaes_key_import_data(ctx, _key_data, _key_data_len); + + f = fopen(fn.c_str(), "rb"); + if (f == NULL) { + LOGERR("Failed to open '%s' to try decrypt\n", fn.c_str()); + return -1; + } + read_len = fread(buffer, sizeof(uint8_t), 4096, f); + if (read_len <= 0) { + LOGERR("Read size during try decrypt failed\n"); + fclose(f); + return -1; + } + if (oaes_decrypt(ctx, buffer, read_len, NULL, &out_len) != OAES_RET_SUCCESS) { + LOGERR("Error: Failed to retrieve required buffer size for trying decryption.\n"); + fclose(f); + return -1; + } + buffer_out = (uint8_t *) calloc(out_len, sizeof(char)); + if (buffer_out == NULL) { + LOGERR("Failed to allocate output buffer for try decrypt.\n"); + fclose(f); + return -1; + } + if (oaes_decrypt(ctx, buffer, read_len, buffer_out, &out_len) != OAES_RET_SUCCESS) { + LOGERR("Failed to decrypt file '%s'\n", fn.c_str()); + fclose(f); + free(buffer_out); + return 0; + } + fclose(f); + if (out_len < 2) { + LOGINFO("Successfully decrypted '%s' but read length %i too small.\n", fn.c_str(), out_len); + free(buffer_out); + return 1; // Decrypted successfully + } + ptr = buffer_out; + firstbyte = *ptr & 0xff; + ptr++; + secondbyte = *ptr & 0xff; + if (firstbyte == 0x1f && secondbyte == 0x8b) { + LOGINFO("Successfully decrypted '%s' and file is compressed.\n", fn.c_str()); + free(buffer_out); + return 3; // Compressed + } + if (out_len >= 262) { + ptr = buffer_out + 257; + if (strncmp((char*)ptr, "ustar", 5) == 0) { + LOGINFO("Successfully decrypted '%s' and file is tar format.\n", fn.c_str()); + free(buffer_out); + return 2; // Tar + } + } + free(buffer_out); + LOGINFO("No errors decrypting '%s' but no known file format.\n", fn.c_str()); + return 1; // Decrypted successfully +#else + LOGERR("Encrypted backup support not included.\n"); + return -1; +#endif +} + +unsigned long TWFunc::Get_File_Size(string Path) { + struct stat st; + + if (stat(Path.c_str(), &st) != 0) + return 0; + return st.st_size; +} + +std::string TWFunc::Remove_Trailing_Slashes(const std::string& path, bool leaveLast) +{ + std::string res; + size_t last_idx = 0, idx = 0; + + while(last_idx != std::string::npos) + { + if(last_idx != 0) + res += '/'; + + idx = path.find_first_of('/', last_idx); + if(idx == std::string::npos) { + res += path.substr(last_idx, idx); + break; + } + + res += path.substr(last_idx, idx-last_idx); + last_idx = path.find_first_not_of('/', idx); + } + + if(leaveLast) + res += '/'; + return res; +} + +vector<string> TWFunc::split_string(const string &in, char del, bool skip_empty) { + vector<string> res; + + if (in.empty() || del == '\0') + return res; + + string field; + istringstream f(in); + if (del == '\n') { + while(getline(f, field)) { + if (field.empty() && skip_empty) + continue; + res.push_back(field); + } + } else { + while(getline(f, field, del)) { + if (field.empty() && skip_empty) + continue; + res.push_back(field); + } + } + return res; +} + +#ifndef BUILD_TWRPTAR_MAIN + +// Returns "/path" from a full /path/to/file.name +string TWFunc::Get_Root_Path(string Path) { + string Local_Path = Path; + + // Make sure that we have a leading slash + if (Local_Path.substr(0, 1) != "/") + Local_Path = "/" + Local_Path; + + // Trim the path to get the root path only + size_t position = Local_Path.find("/", 2); + if (position != string::npos) { + Local_Path.resize(position); + } + return Local_Path; +} + +void TWFunc::install_htc_dumlock(void) { + int need_libs = 0; + + if (!PartitionManager.Mount_By_Path("/system", true)) + return; + + if (!PartitionManager.Mount_By_Path("/data", true)) + return; + + gui_print("Installing HTC Dumlock to system...\n"); + copy_file("/res/htcd/htcdumlocksys", "/system/bin/htcdumlock", 0755); + if (!Path_Exists("/system/bin/flash_image")) { + gui_print("Installing flash_image...\n"); + copy_file("/res/htcd/flash_imagesys", "/system/bin/flash_image", 0755); + need_libs = 1; + } else + gui_print("flash_image is already installed, skipping...\n"); + if (!Path_Exists("/system/bin/dump_image")) { + gui_print("Installing dump_image...\n"); + copy_file("/res/htcd/dump_imagesys", "/system/bin/dump_image", 0755); + need_libs = 1; + } else + gui_print("dump_image is already installed, skipping...\n"); + if (need_libs) { + gui_print("Installing libs needed for flash_image and dump_image...\n"); + copy_file("/res/htcd/libbmlutils.so", "/system/lib/libbmlutils.so", 0755); + copy_file("/res/htcd/libflashutils.so", "/system/lib/libflashutils.so", 0755); + copy_file("/res/htcd/libmmcutils.so", "/system/lib/libmmcutils.so", 0755); + copy_file("/res/htcd/libmtdutils.so", "/system/lib/libmtdutils.so", 0755); + } + gui_print("Installing HTC Dumlock app...\n"); + mkdir("/data/app", 0777); + unlink("/data/app/com.teamwin.htcdumlock*"); + copy_file("/res/htcd/HTCDumlock.apk", "/data/app/com.teamwin.htcdumlock.apk", 0777); + sync(); + gui_print("HTC Dumlock is installed.\n"); +} + +void TWFunc::htc_dumlock_restore_original_boot(void) { + if (!PartitionManager.Mount_By_Path("/sdcard", true)) + return; + + gui_print("Restoring original boot...\n"); + Exec_Cmd("htcdumlock restore"); + gui_print("Original boot restored.\n"); +} + +void TWFunc::htc_dumlock_reflash_recovery_to_boot(void) { + if (!PartitionManager.Mount_By_Path("/sdcard", true)) + return; + gui_print("Reflashing recovery to boot...\n"); + Exec_Cmd("htcdumlock recovery noreboot"); + gui_print("Recovery is flashed to boot.\n"); +} + +int TWFunc::Recursive_Mkdir(string Path) { + string pathCpy = Path; + string wholePath; + size_t pos = pathCpy.find("/", 2); + + while (pos != string::npos) + { + wholePath = pathCpy.substr(0, pos); + if (mkdir(wholePath.c_str(), 0777) && errno != EEXIST) { + LOGERR("Unable to create folder: %s (errno=%d)\n", wholePath.c_str(), errno); + return false; + } + + pos = pathCpy.find("/", pos + 1); + } + if (mkdir(wholePath.c_str(), 0777) && errno != EEXIST) + return false; + return true; +} + +void TWFunc::GUI_Operation_Text(string Read_Value, string Default_Text) { + string Display_Text; + + DataManager::GetValue(Read_Value, Display_Text); + if (Display_Text.empty()) + Display_Text = Default_Text; + + DataManager::SetValue("tw_operation", Display_Text); + DataManager::SetValue("tw_partition", ""); +} + +void TWFunc::GUI_Operation_Text(string Read_Value, string Partition_Name, string Default_Text) { + string Display_Text; + + DataManager::GetValue(Read_Value, Display_Text); + if (Display_Text.empty()) + Display_Text = Default_Text; + + DataManager::SetValue("tw_operation", Display_Text); + DataManager::SetValue("tw_partition", Partition_Name); +} + +void TWFunc::Copy_Log(string Source, string Destination) { + PartitionManager.Mount_By_Path(Destination, false); + FILE *destination_log = fopen(Destination.c_str(), "a"); + if (destination_log == NULL) { + LOGERR("TWFunc::Copy_Log -- Can't open destination log file: '%s'\n", Destination.c_str()); + } else { + FILE *source_log = fopen(Source.c_str(), "r"); + if (source_log != NULL) { + fseek(source_log, Log_Offset, SEEK_SET); + char buffer[4096]; + while (fgets(buffer, sizeof(buffer), source_log)) + fputs(buffer, destination_log); // Buffered write of log file + Log_Offset = ftell(source_log); + fflush(source_log); + fclose(source_log); + } + fflush(destination_log); + fclose(destination_log); + } +} + +void TWFunc::Update_Log_File(void) { + // Copy logs to cache so the system can find out what happened. + if (PartitionManager.Mount_By_Path("/cache", false)) { + if (!TWFunc::Path_Exists("/cache/recovery/.")) { + LOGINFO("Recreating /cache/recovery folder.\n"); + if (mkdir("/cache/recovery", S_IRWXU | S_IRWXG | S_IWGRP | S_IXGRP) != 0) + LOGINFO("Unable to create /cache/recovery folder.\n"); + } + Copy_Log(TMP_LOG_FILE, "/cache/recovery/log"); + copy_file("/cache/recovery/log", "/cache/recovery/last_log", 600); + chown("/cache/recovery/log", 1000, 1000); + chmod("/cache/recovery/log", 0600); + chmod("/cache/recovery/last_log", 0640); + } else { + LOGINFO("Failed to mount /cache for TWFunc::Update_Log_File\n"); + } + + // Reset bootloader message + TWPartition* Part = PartitionManager.Find_Partition_By_Path("/misc"); + if (Part != NULL) { + struct bootloader_message boot; + memset(&boot, 0, sizeof(boot)); + if (Part->Current_File_System == "mtd") { + if (set_bootloader_message_mtd_name(&boot, Part->MTD_Name.c_str()) != 0) + LOGERR("Unable to set MTD bootloader message.\n"); + } else if (Part->Current_File_System == "emmc") { + if (set_bootloader_message_block_name(&boot, Part->Actual_Block_Device.c_str()) != 0) + LOGERR("Unable to set emmc bootloader message.\n"); + } else { + LOGERR("Unknown file system for /misc: '%s'\n", Part->Current_File_System.c_str()); + } + } + + if (PartitionManager.Mount_By_Path("/cache", true)) { + if (unlink("/cache/recovery/command") && errno != ENOENT) { + LOGINFO("Can't unlink %s\n", "/cache/recovery/command"); + } + } + + sync(); +} + +void TWFunc::Update_Intent_File(string Intent) { + if (PartitionManager.Mount_By_Path("/cache", false) && !Intent.empty()) { + TWFunc::write_file("/cache/recovery/intent", Intent); + } +} + +// reboot: Reboot the system. Return -1 on error, no return on success +int TWFunc::tw_reboot(RebootCommand command) +{ + // Always force a sync before we reboot + sync(); + + switch (command) { + case rb_current: + case rb_system: + Update_Log_File(); + Update_Intent_File("s"); + sync(); + check_and_run_script("/sbin/rebootsystem.sh", "reboot system"); + return reboot(RB_AUTOBOOT); + case rb_recovery: + check_and_run_script("/sbin/rebootrecovery.sh", "reboot recovery"); + return __reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, (void*) "recovery"); + case rb_bootloader: + check_and_run_script("/sbin/rebootbootloader.sh", "reboot bootloader"); + return __reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, (void*) "bootloader"); + case rb_poweroff: + check_and_run_script("/sbin/poweroff.sh", "power off"); +#ifdef ANDROID_RB_POWEROFF + android_reboot(ANDROID_RB_POWEROFF, 0, 0); +#endif + return reboot(RB_POWER_OFF); + case rb_download: + check_and_run_script("/sbin/rebootdownload.sh", "reboot download"); + return __reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, (void*) "download"); + default: + return -1; + } + return -1; +} + +void TWFunc::check_and_run_script(const char* script_file, const char* display_name) +{ + // Check for and run startup script if script exists + struct stat st; + if (stat(script_file, &st) == 0) { + gui_print("Running %s script...\n", display_name); + chmod(script_file, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH); + TWFunc::Exec_Cmd(script_file); + gui_print("\nFinished running %s script.\n", display_name); + } +} + +int TWFunc::removeDir(const string path, bool skipParent) { + DIR *d = opendir(path.c_str()); + int r = 0; + string new_path; + + if (d == NULL) { + LOGERR("Error opening '%s'\n", path.c_str()); + return -1; + } + + if (d) { + struct dirent *p; + while (!r && (p = readdir(d))) { + if (!strcmp(p->d_name, ".") || !strcmp(p->d_name, "..")) + continue; + new_path = path + "/"; + new_path.append(p->d_name); + if (p->d_type == DT_DIR) { + r = removeDir(new_path, true); + if (!r) { + if (p->d_type == DT_DIR) + r = rmdir(new_path.c_str()); + else + LOGINFO("Unable to removeDir '%s': %s\n", new_path.c_str(), strerror(errno)); + } + } else if (p->d_type == DT_REG || p->d_type == DT_LNK || p->d_type == DT_FIFO || p->d_type == DT_SOCK) { + r = unlink(new_path.c_str()); + if (r != 0) { + LOGINFO("Unable to unlink '%s: %s'\n", new_path.c_str(), strerror(errno)); + } + } + } + closedir(d); + + if (!r) { + if (skipParent) + return 0; + else + r = rmdir(path.c_str()); + } + } + return r; +} + +int TWFunc::copy_file(string src, string dst, int mode) { + LOGINFO("Copying file %s to %s\n", src.c_str(), dst.c_str()); + ifstream srcfile(src.c_str(), ios::binary); + ofstream dstfile(dst.c_str(), ios::binary); + dstfile << srcfile.rdbuf(); + srcfile.close(); + dstfile.close(); + if (chmod(dst.c_str(), mode) != 0) + return -1; + return 0; +} + +unsigned int TWFunc::Get_D_Type_From_Stat(string Path) { + struct stat st; + + stat(Path.c_str(), &st); + if (st.st_mode & S_IFDIR) + return DT_DIR; + else if (st.st_mode & S_IFBLK) + return DT_BLK; + else if (st.st_mode & S_IFCHR) + return DT_CHR; + else if (st.st_mode & S_IFIFO) + return DT_FIFO; + else if (st.st_mode & S_IFLNK) + return DT_LNK; + else if (st.st_mode & S_IFREG) + return DT_REG; + else if (st.st_mode & S_IFSOCK) + return DT_SOCK; + return DT_UNKNOWN; +} + +int TWFunc::read_file(string fn, string& results) { + ifstream file; + file.open(fn.c_str(), ios::in); + + if (file.is_open()) { + file >> results; + file.close(); + return 0; + } + + LOGINFO("Cannot find file %s\n", fn.c_str()); + return -1; +} + +int TWFunc::read_file(string fn, vector<string>& results) { + ifstream file; + string line; + file.open(fn.c_str(), ios::in); + if (file.is_open()) { + while (getline(file, line)) + results.push_back(line); + file.close(); + return 0; + } + LOGINFO("Cannot find file %s\n", fn.c_str()); + return -1; +} + +int TWFunc::read_file(string fn, uint64_t& results) { + ifstream file; + file.open(fn.c_str(), ios::in); + + if (file.is_open()) { + file >> results; + file.close(); + return 0; + } + + LOGINFO("Cannot find file %s\n", fn.c_str()); + return -1; +} + +int TWFunc::write_file(string fn, string& line) { + FILE *file; + file = fopen(fn.c_str(), "w"); + if (file != NULL) { + fwrite(line.c_str(), line.size(), 1, file); + fclose(file); + return 0; + } + LOGINFO("Cannot find file %s\n", fn.c_str()); + return -1; +} + +timespec TWFunc::timespec_diff(timespec& start, timespec& end) +{ + timespec temp; + if ((end.tv_nsec-start.tv_nsec)<0) { + temp.tv_sec = end.tv_sec-start.tv_sec-1; + temp.tv_nsec = 1000000000+end.tv_nsec-start.tv_nsec; + } else { + temp.tv_sec = end.tv_sec-start.tv_sec; + temp.tv_nsec = end.tv_nsec-start.tv_nsec; + } + return temp; +} + +int32_t TWFunc::timespec_diff_ms(timespec& start, timespec& end) +{ + return ((end.tv_sec * 1000) + end.tv_nsec/1000000) - + ((start.tv_sec * 1000) + start.tv_nsec/1000000); +} + +int TWFunc::drop_caches(void) { + string file = "/proc/sys/vm/drop_caches"; + string value = "3"; + if (write_file(file, value) != 0) + return -1; + return 0; +} + +int TWFunc::Check_su_Perms(void) { + struct stat st; + int ret = 0; + + if (!PartitionManager.Mount_By_Path("/system", false)) + return 0; + + // Check to ensure that perms are 6755 for all 3 file locations + if (stat("/system/bin/su", &st) == 0) { + if ((st.st_mode & (S_ISUID | S_ISGID | S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH)) != (S_ISUID | S_ISGID | S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) || st.st_uid != 0 || st.st_gid != 0) { + ret = 1; + } + } + if (stat("/system/xbin/su", &st) == 0) { + if ((st.st_mode & (S_ISUID | S_ISGID | S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH)) != (S_ISUID | S_ISGID | S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) || st.st_uid != 0 || st.st_gid != 0) { + ret += 2; + } + } + if (stat("/system/bin/.ext/.su", &st) == 0) { + if ((st.st_mode & (S_ISUID | S_ISGID | S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH)) != (S_ISUID | S_ISGID | S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) || st.st_uid != 0 || st.st_gid != 0) { + ret += 4; + } + } + return ret; +} + +bool TWFunc::Fix_su_Perms(void) { + if (!PartitionManager.Mount_By_Path("/system", true)) + return false; + + string propvalue = System_Property_Get("ro.build.version.sdk"); + string su_perms = "6755"; + if (!propvalue.empty()) { + int sdk_version = atoi(propvalue.c_str()); + if (sdk_version >= 18) + su_perms = "0755"; + } + + string file = "/system/bin/su"; + if (TWFunc::Path_Exists(file)) { + if (chown(file.c_str(), 0, 0) != 0) { + LOGERR("Failed to chown '%s'\n", file.c_str()); + return false; + } + if (tw_chmod(file, su_perms) != 0) { + LOGERR("Failed to chmod '%s'\n", file.c_str()); + return false; + } + } + file = "/system/xbin/su"; + if (TWFunc::Path_Exists(file)) { + if (chown(file.c_str(), 0, 0) != 0) { + LOGERR("Failed to chown '%s'\n", file.c_str()); + return false; + } + if (tw_chmod(file, su_perms) != 0) { + LOGERR("Failed to chmod '%s'\n", file.c_str()); + return false; + } + } + file = "/system/xbin/daemonsu"; + if (TWFunc::Path_Exists(file)) { + if (chown(file.c_str(), 0, 0) != 0) { + LOGERR("Failed to chown '%s'\n", file.c_str()); + return false; + } + if (tw_chmod(file, "0755") != 0) { + LOGERR("Failed to chmod '%s'\n", file.c_str()); + return false; + } + } + file = "/system/bin/.ext/.su"; + if (TWFunc::Path_Exists(file)) { + if (chown(file.c_str(), 0, 0) != 0) { + LOGERR("Failed to chown '%s'\n", file.c_str()); + return false; + } + if (tw_chmod(file, su_perms) != 0) { + LOGERR("Failed to chmod '%s'\n", file.c_str()); + return false; + } + } + file = "/system/etc/install-recovery.sh"; + if (TWFunc::Path_Exists(file)) { + if (chown(file.c_str(), 0, 0) != 0) { + LOGERR("Failed to chown '%s'\n", file.c_str()); + return false; + } + if (tw_chmod(file, "0755") != 0) { + LOGERR("Failed to chmod '%s'\n", file.c_str()); + return false; + } + } + file = "/system/etc/init.d/99SuperSUDaemon"; + if (TWFunc::Path_Exists(file)) { + if (chown(file.c_str(), 0, 0) != 0) { + LOGERR("Failed to chown '%s'\n", file.c_str()); + return false; + } + if (tw_chmod(file, "0755") != 0) { + LOGERR("Failed to chmod '%s'\n", file.c_str()); + return false; + } + } + file = "/system/app/Superuser.apk"; + if (TWFunc::Path_Exists(file)) { + if (chown(file.c_str(), 0, 0) != 0) { + LOGERR("Failed to chown '%s'\n", file.c_str()); + return false; + } + if (tw_chmod(file, "0644") != 0) { + LOGERR("Failed to chmod '%s'\n", file.c_str()); + return false; + } + } + sync(); + if (!PartitionManager.UnMount_By_Path("/system", true)) + return false; + return true; +} + +int TWFunc::tw_chmod(const string& fn, const string& mode) { + long mask = 0; + std::string::size_type n = mode.length(); + int cls = 0; + + if(n == 3) + ++cls; + else if(n != 4) + { + LOGERR("TWFunc::tw_chmod used with %u long mode string (should be 3 or 4)!\n", mode.length()); + return -1; + } + + for (n = 0; n < mode.length(); ++n, ++cls) { + if (cls == 0) { + if (mode[n] == '0') + continue; + else if (mode[n] == '1') + mask |= S_ISVTX; + else if (mode[n] == '2') + mask |= S_ISGID; + else if (mode[n] == '4') + mask |= S_ISUID; + else if (mode[n] == '5') { + mask |= S_ISVTX; + mask |= S_ISUID; + } + else if (mode[n] == '6') { + mask |= S_ISGID; + mask |= S_ISUID; + } + else if (mode[n] == '7') { + mask |= S_ISVTX; + mask |= S_ISGID; + mask |= S_ISUID; + } + } + else if (cls == 1) { + if (mode[n] == '7') { + mask |= S_IRWXU; + } + else if (mode[n] == '6') { + mask |= S_IRUSR; + mask |= S_IWUSR; + } + else if (mode[n] == '5') { + mask |= S_IRUSR; + mask |= S_IXUSR; + } + else if (mode[n] == '4') + mask |= S_IRUSR; + else if (mode[n] == '3') { + mask |= S_IWUSR; + mask |= S_IRUSR; + } + else if (mode[n] == '2') + mask |= S_IWUSR; + else if (mode[n] == '1') + mask |= S_IXUSR; + } + else if (cls == 2) { + if (mode[n] == '7') { + mask |= S_IRWXG; + } + else if (mode[n] == '6') { + mask |= S_IRGRP; + mask |= S_IWGRP; + } + else if (mode[n] == '5') { + mask |= S_IRGRP; + mask |= S_IXGRP; + } + else if (mode[n] == '4') + mask |= S_IRGRP; + else if (mode[n] == '3') { + mask |= S_IWGRP; + mask |= S_IXGRP; + } + else if (mode[n] == '2') + mask |= S_IWGRP; + else if (mode[n] == '1') + mask |= S_IXGRP; + } + else if (cls == 3) { + if (mode[n] == '7') { + mask |= S_IRWXO; + } + else if (mode[n] == '6') { + mask |= S_IROTH; + mask |= S_IWOTH; + } + else if (mode[n] == '5') { + mask |= S_IROTH; + mask |= S_IXOTH; + } + else if (mode[n] == '4') + mask |= S_IROTH; + else if (mode[n] == '3') { + mask |= S_IWOTH; + mask |= S_IXOTH; + } + else if (mode[n] == '2') + mask |= S_IWOTH; + else if (mode[n] == '1') + mask |= S_IXOTH; + } + } + + if (chmod(fn.c_str(), mask) != 0) { + LOGERR("Unable to chmod '%s' %l\n", fn.c_str(), mask); + return -1; + } + + return 0; +} + +bool TWFunc::Install_SuperSU(void) { + if (!PartitionManager.Mount_By_Path("/system", true)) + return false; + + TWFunc::Exec_Cmd("/sbin/chattr -i /system/xbin/su"); + if (copy_file("/supersu/su", "/system/xbin/su", 0755) != 0) { + LOGERR("Failed to copy su binary to /system/bin\n"); + return false; + } + if (!Path_Exists("/system/bin/.ext")) { + mkdir("/system/bin/.ext", 0777); + } + TWFunc::Exec_Cmd("/sbin/chattr -i /system/bin/.ext/su"); + if (copy_file("/supersu/su", "/system/bin/.ext/su", 0755) != 0) { + LOGERR("Failed to copy su binary to /system/bin/.ext/su\n"); + return false; + } + TWFunc::Exec_Cmd("/sbin/chattr -i /system/xbin/daemonsu"); + if (copy_file("/supersu/su", "/system/xbin/daemonsu", 0755) != 0) { + LOGERR("Failed to copy su binary to /system/xbin/daemonsu\n"); + return false; + } + if (Path_Exists("/system/etc/init.d")) { + TWFunc::Exec_Cmd("/sbin/chattr -i /system/etc/init.d/99SuperSUDaemon"); + if (copy_file("/supersu/99SuperSUDaemon", "/system/etc/init.d/99SuperSUDaemon", 0755) != 0) { + LOGERR("Failed to copy 99SuperSUDaemon to /system/etc/init.d/99SuperSUDaemon\n"); + return false; + } + } else { + TWFunc::Exec_Cmd("/sbin/chattr -i /system/etc/install-recovery.sh"); + if (copy_file("/supersu/install-recovery.sh", "/system/etc/install-recovery.sh", 0755) != 0) { + LOGERR("Failed to copy install-recovery.sh to /system/etc/install-recovery.sh\n"); + return false; + } + } + if (copy_file("/supersu/Superuser.apk", "/system/app/Superuser.apk", 0644) != 0) { + LOGERR("Failed to copy Superuser app to /system/app\n"); + return false; + } + if (!Fix_su_Perms()) + return false; + return true; +} + +bool TWFunc::Try_Decrypting_Backup(string Restore_Path, string Password) { + DIR* d; + + string Filename; + Restore_Path += "/"; + d = opendir(Restore_Path.c_str()); + if (d == NULL) { + LOGERR("Error opening '%s'\n", Restore_Path.c_str()); + return false; + } + + struct dirent* de; + while ((de = readdir(d)) != NULL) { + Filename = Restore_Path; + Filename += de->d_name; + if (TWFunc::Get_File_Type(Filename) == 2) { + if (TWFunc::Try_Decrypting_File(Filename, Password) < 2) { + DataManager::SetValue("tw_restore_password", ""); // Clear the bad password + DataManager::SetValue("tw_restore_display", ""); // Also clear the display mask + closedir(d); + return false; + } + } + } + closedir(d); + return true; +} + +string TWFunc::Get_Current_Date() { + string Current_Date; + time_t seconds = time(0); + struct tm *t = localtime(&seconds); + char timestamp[255]; + sprintf(timestamp,"%04d-%02d-%02d--%02d-%02d-%02d",t->tm_year+1900,t->tm_mon+1,t->tm_mday,t->tm_hour,t->tm_min,t->tm_sec); + Current_Date = timestamp; + return Current_Date; +} + +string TWFunc::System_Property_Get(string Prop_Name) { + bool mount_state = PartitionManager.Is_Mounted_By_Path("/system"); + std::vector<string> buildprop; + string propvalue; + if (!PartitionManager.Mount_By_Path("/system", true)) + return propvalue; + if (TWFunc::read_file("/system/build.prop", buildprop) != 0) { + LOGINFO("Unable to open /system/build.prop for getting '%s'.\n", Prop_Name.c_str()); + DataManager::SetValue(TW_BACKUP_NAME, Get_Current_Date()); + if (!mount_state) + PartitionManager.UnMount_By_Path("/system", false); + return propvalue; + } + int line_count = buildprop.size(); + int index; + size_t start_pos = 0, end_pos; + string propname; + for (index = 0; index < line_count; index++) { + end_pos = buildprop.at(index).find("=", start_pos); + propname = buildprop.at(index).substr(start_pos, end_pos); + if (propname == Prop_Name) { + propvalue = buildprop.at(index).substr(end_pos + 1, buildprop.at(index).size()); + if (!mount_state) + PartitionManager.UnMount_By_Path("/system", false); + return propvalue; + } + } + if (!mount_state) + PartitionManager.UnMount_By_Path("/system", false); + return propvalue; +} + +void TWFunc::Auto_Generate_Backup_Name() { + string propvalue = System_Property_Get("ro.build.display.id"); + if (propvalue.empty()) { + DataManager::SetValue(TW_BACKUP_NAME, Get_Current_Date()); + return; + } + string Backup_Name = Get_Current_Date(); + Backup_Name += " " + propvalue; + if (Backup_Name.size() > MAX_BACKUP_NAME_LEN) + Backup_Name.resize(MAX_BACKUP_NAME_LEN); + // Trailing spaces cause problems on some file systems, so remove them + string space_check, space = " "; + space_check = Backup_Name.substr(Backup_Name.size() - 1, 1); + while (space_check == space) { + Backup_Name.resize(Backup_Name.size() - 1); + space_check = Backup_Name.substr(Backup_Name.size() - 1, 1); + } + DataManager::SetValue(TW_BACKUP_NAME, Backup_Name); + if (PartitionManager.Check_Backup_Name(false) != 0) { + LOGINFO("Auto generated backup name '%s' contains invalid characters, using date instead.\n", Backup_Name.c_str()); + DataManager::SetValue(TW_BACKUP_NAME, Get_Current_Date()); + } +} + +void TWFunc::Fixup_Time_On_Boot() +{ +#ifdef QCOM_RTC_FIX + + LOGINFO("TWFunc::Fixup_Time: Pre-fix date and time: %s\n", TWFunc::Get_Current_Date().c_str()); + + struct timeval tv; + uint64_t offset = 0; + std::string sepoch = "/sys/class/rtc/rtc0/since_epoch"; + + if (TWFunc::read_file(sepoch, offset) == 0) { + + LOGINFO("TWFunc::Fixup_Time: Setting time offset from file %s\n", sepoch.c_str()); + + tv.tv_sec = offset; + tv.tv_usec = 0; + settimeofday(&tv, NULL); + + gettimeofday(&tv, NULL); + + if (tv.tv_sec > 1405209403) { // Anything older then 12 Jul 2014 23:56:43 GMT will do nicely thank you ;) + + LOGINFO("TWFunc::Fixup_Time: Date and time corrected: %s\n", TWFunc::Get_Current_Date().c_str()); + return; + + } + + } else { + + LOGINFO("TWFunc::Fixup_Time: opening %s failed\n", sepoch.c_str()); + + } + + LOGINFO("TWFunc::Fixup_Time: will attempt to use the ats files now.\n", sepoch.c_str()); + + // Devices with Qualcomm Snapdragon 800 do some shenanigans with RTC. + // They never set it, it just ticks forward from 1970-01-01 00:00, + // and then they have files /data/system/time/ats_* with 64bit offset + // in miliseconds which, when added to the RTC, gives the correct time. + // So, the time is: (offset_from_ats + value_from_RTC) + // There are multiple ats files, they are for different systems? Bases? + // Like, ats_1 is for modem and ats_2 is for TOD (time of day?). + // Look at file time_genoff.h in CodeAurora, qcom-opensource/time-services + + static const char *paths[] = { "/data/system/time/", "/data/time/" }; + + FILE *f; + DIR *d; + offset = 0; + struct dirent *dt; + std::string ats_path; + + if(!PartitionManager.Mount_By_Path("/data", false)) + return; + + // Prefer ats_2, it seems to be the one we want according to logcat on hammerhead + // - it is the one for ATS_TOD (time of day?). + // However, I never saw a device where the offset differs between ats files. + for(size_t i = 0; i < (sizeof(paths)/sizeof(paths[0])); ++i) + { + DIR *d = opendir(paths[i]); + if(!d) + continue; + + while((dt = readdir(d))) + { + if(dt->d_type != DT_REG || strncmp(dt->d_name, "ats_", 4) != 0) + continue; + + if(ats_path.empty() || strcmp(dt->d_name, "ats_2") == 0) + ats_path = std::string(paths[i]).append(dt->d_name); + } + + closedir(d); + } + + if(ats_path.empty()) + { + LOGINFO("TWFunc::Fixup_Time: no ats files found, leaving untouched!\n"); + return; + } + + f = fopen(ats_path.c_str(), "r"); + if(!f) + { + LOGINFO("TWFunc::Fixup_Time: failed to open file %s\n", ats_path.c_str()); + return; + } + + if(fread(&offset, sizeof(offset), 1, f) != 1) + { + LOGINFO("TWFunc::Fixup_Time: failed load uint64 from file %s\n", ats_path.c_str()); + fclose(f); + return; + } + fclose(f); + + LOGINFO("TWFunc::Fixup_Time: Setting time offset from file %s, offset %llu\n", ats_path.c_str(), offset); + + gettimeofday(&tv, NULL); + + tv.tv_sec += offset/1000; + tv.tv_usec += (offset%1000)*1000; + + while(tv.tv_usec >= 1000000) + { + ++tv.tv_sec; + tv.tv_usec -= 1000000; + } + + settimeofday(&tv, NULL); + + LOGINFO("TWFunc::Fixup_Time: Date and time corrected: %s\n", TWFunc::Get_Current_Date().c_str()); + +#endif +} + +std::vector<std::string> TWFunc::Split_String(const std::string& str, const std::string& delimiter, bool removeEmpty) +{ + std::vector<std::string> res; + size_t idx = 0, idx_last = 0; + + while(idx < str.size()) + { + idx = str.find_first_of(delimiter, idx_last); + if(idx == std::string::npos) + idx = str.size(); + + if(idx-idx_last != 0 || !removeEmpty) + res.push_back(str.substr(idx_last, idx-idx_last)); + + idx_last = idx + delimiter.size(); + } + + return res; +} + +bool TWFunc::Create_Dir_Recursive(const std::string& path, mode_t mode, uid_t uid, gid_t gid) +{ + std::vector<std::string> parts = Split_String(path, "/"); + std::string cur_path; + struct stat info; + for(size_t i = 0; i < parts.size(); ++i) + { + cur_path += "/" + parts[i]; + if(stat(cur_path.c_str(), &info) < 0 || !S_ISDIR(info.st_mode)) + { + if(mkdir(cur_path.c_str(), mode) < 0) + return false; + chown(cur_path.c_str(), uid, gid); + } + } + return true; +} + +int TWFunc::Set_Brightness(std::string brightness_value) +{ + + std::string brightness_file = DataManager::GetStrValue("tw_brightness_file");; + + if (brightness_file.compare("/nobrightness") != 0) { + std::string secondary_brightness_file = DataManager::GetStrValue("tw_secondary_brightness_file"); + LOGINFO("TWFunc::Set_Brightness: Setting brightness control to %s\n", brightness_value.c_str()); + int result = TWFunc::write_file(brightness_file, brightness_value); + if (secondary_brightness_file != "") { + LOGINFO("TWFunc::Set_Brightness: Setting SECONDARY brightness control to %s\n", brightness_value.c_str()); + TWFunc::write_file(secondary_brightness_file, brightness_value); + } + return result; + } + return -1; +} + +bool TWFunc::Toggle_MTP(bool enable) { +#ifdef TW_HAS_MTP + static int was_enabled = false; + + if (enable && was_enabled) { + if (!PartitionManager.Enable_MTP()) + PartitionManager.Disable_MTP(); + } else { + was_enabled = DataManager::GetIntValue("tw_mtp_enabled"); + PartitionManager.Disable_MTP(); + usleep(500); + } + return was_enabled; +#else + return false; +#endif +} + +void TWFunc::SetPerformanceMode(bool mode) { + if (mode) { + property_set("recovery.perf.mode", "1"); + } else { + property_set("recovery.perf.mode", "0"); + } + // Some time for events to catch up to init handlers + usleep(500000); +} + +std::string TWFunc::to_string(unsigned long value) { + std::ostringstream os; + os << value; + return os.str(); +} + +#endif // ndef BUILD_TWRPTAR_MAIN |