/*
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 <algorithm>
#include "twrp-functions.hpp"
#include "twcommon.h"
#include "gui/gui.hpp"
#ifndef BUILD_TWRPTAR_MAIN
#include "data.hpp"
#include "partitions.hpp"
#include "variables.h"
#include "bootloader.h"
#include "cutils/properties.h"
#include "cutils/android_reboot.h"
#include <sys/reboot.h>
#endif // ndef BUILD_TWRPTAR_MAIN
#ifndef TW_EXCLUDE_ENCRYPTED_BACKUPS
#include "openaes/inc/oaes_lib.h"
#endif
#include "set_metadata.h"
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)) {
if (fgets(buffer, 128, exec) != NULL) {
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 (WIFSIGNALED(*status)) {
gui_msg(Msg(msg::kError, "pid_signal={1} process ended with signal: {2}")(Child_Name)(WTERMSIG(*status))); // Seg fault or some other non-graceful termination
return -1;
} else if (WEXITSTATUS(*status) == 0) {
LOGINFO("%s process ended with RC=%d\n", Child_Name.c_str(), WEXITSTATUS(*status)); // Success
} else {
gui_msg(Msg(msg::kError, "pid_error={1} process ended with ERROR: {2}")(Child_Name)(WEXITSTATUS(*status))); // Graceful exit, but there was an error
return -1;
}
} else { // no PID returned
if (errno == ECHILD)
LOGERR("%s no child process exist\n", Child_Name.c_str());
else {
LOGERR("%s Unexpected error %d\n", Child_Name.c_str(), errno);
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;
}
Archive_Type 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 COMPRESSED;
else if (firstbyte == 0x4f && secondbyte == 0x41)
return ENCRYPTED;
return UNCOMPRESSED; // default
}
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: %s\n", fn.c_str(), strerror(errno));
oaes_free(&ctx);
return -1;
}
read_len = fread(buffer, sizeof(uint8_t), 4096, f);
if (read_len <= 0) {
LOGERR("Read size during try decrypt failed: %s\n", strerror(errno));
fclose(f);
oaes_free(&ctx);
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);
oaes_free(&ctx);
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);
oaes_free(&ctx);
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);
oaes_free(&ctx);
return 0;
}
fclose(f);
oaes_free(&ctx);
if (out_len < 2) {
LOGINFO("Successfully decrypted '%s' but read length too small.\n", fn.c_str());
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(const 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;
}
void TWFunc::Strip_Quotes(char* &str) {
if (strlen(str) > 0 && str[0] == '\"')
str++;
if (strlen(str) > 0 && str[strlen(str)-1] == '\"')
str[strlen(str)-1] = 0;
}
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;
}
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);
}
#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_msg("install_dumlock=Installing HTC Dumlock to system...");
copy_file(TWHTCD_PATH "htcdumlocksys", "/system/bin/htcdumlock", 0755);
if (!Path_Exists("/system/bin/flash_image")) {
LOGINFO("Installing flash_image...\n");
copy_file(TWHTCD_PATH "flash_imagesys", "/system/bin/flash_image", 0755);
need_libs = 1;
} else
LOGINFO("flash_image is already installed, skipping...\n");
if (!Path_Exists("/system/bin/dump_image")) {
LOGINFO("Installing dump_image...\n");
copy_file(TWHTCD_PATH "dump_imagesys", "/system/bin/dump_image", 0755);
need_libs = 1;
} else
LOGINFO("dump_image is already installed, skipping...\n");
if (need_libs) {
LOGINFO("Installing libs needed for flash_image and dump_image...\n");
copy_file(TWHTCD_PATH "libbmlutils.so", "/system/lib/libbmlutils.so", 0644);
copy_file(TWHTCD_PATH "libflashutils.so", "/system/lib/libflashutils.so", 0644);
copy_file(TWHTCD_PATH "libmmcutils.so", "/system/lib/libmmcutils.so", 0644);
copy_file(TWHTCD_PATH "libmtdutils.so", "/system/lib/libmtdutils.so", 0644);
}
LOGINFO("Installing HTC Dumlock app...\n");
mkdir("/data/app", 0777);
unlink("/data/app/com.teamwin.htcdumlock*");
copy_file(TWHTCD_PATH "HTCDumlock.apk", "/data/app/com.teamwin.htcdumlock.apk", 0777);
sync();
gui_msg("done=Done.");
}
void TWFunc::htc_dumlock_restore_original_boot(void) {
if (!PartitionManager.Mount_By_Path("/sdcard", true))
return;
gui_msg("dumlock_restore=Restoring original boot...");
Exec_Cmd("htcdumlock restore");
gui_msg("done=Done.");
}
void TWFunc::htc_dumlock_reflash_recovery_to_boot(void) {
if (!PartitionManager.Mount_By_Path("/sdcard", true))
return;
gui_msg("dumlock_reflash=Reflashing recovery to boot...");
Exec_Cmd("htcdumlock recovery noreboot");
gui_msg("done=Done.");
}
int TWFunc::Recursive_Mkdir(string Path) {
std::vector<std::string> parts = Split_String(Path, "/", true);
std::string cur_path;
for (size_t i = 0; i < parts.size(); ++i) {
cur_path += "/" + parts[i];
if (!TWFunc::Path_Exists(cur_path)) {
if (mkdir(cur_path.c_str(), 0777)) {
gui_msg(Msg(msg::kError, "create_folder_strerr=Can not create '{1}' folder ({2}).")(cur_path)(strerror(errno)));
return false;
} else {
tw_set_default_metadata(cur_path.c_str());
}
}
}
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) {
string err;
if (!clear_bootloader_message(&err)) {
if (err == "no misc device set") {
LOGINFO("%s\n", err.c_str());
} else {
LOGERR("%s\n", err.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)
{
DataManager::Flush();
Update_Log_File();
// Always force a sync before we reboot
sync();
switch (command) {
case rb_current:
case rb_system:
Update_Intent_File("s");
sync();
check_and_run_script("/sbin/rebootsystem.sh", "reboot system");
#ifdef ANDROID_RB_PROPERTY
return property_set(ANDROID_RB_PROPERTY, "reboot,");
#elif defined(ANDROID_RB_RESTART)
return android_reboot(ANDROID_RB_RESTART, 0, 0);
#else
return reboot(RB_AUTOBOOT);
#endif
case rb_recovery:
check_and_run_script("/sbin/rebootrecovery.sh", "reboot recovery");
#ifdef ANDROID_RB_PROPERTY
return property_set(ANDROID_RB_PROPERTY, "reboot,recovery");
#else
return __reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, (void*) "recovery");
#endif
case rb_bootloader:
check_and_run_script("/sbin/rebootbootloader.sh", "reboot bootloader");
#ifdef ANDROID_RB_PROPERTY
return property_set(ANDROID_RB_PROPERTY, "reboot,bootloader");
#else
return __reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, (void*) "bootloader");
#endif
case rb_poweroff:
check_and_run_script("/sbin/poweroff.sh", "power off");
#ifdef ANDROID_RB_PROPERTY
return property_set(ANDROID_RB_PROPERTY, "shutdown,");
#elif defined(ANDROID_RB_POWEROFF)
return android_reboot(ANDROID_RB_POWEROFF, 0, 0);
#else
return reboot(RB_POWER_OFF);
#endif
case rb_download:
check_and_run_script("/sbin/rebootdownload.sh", "reboot download");
#ifdef ANDROID_RB_PROPERTY
return property_set(ANDROID_RB_PROPERTY, "reboot,download");
#else
return __reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, LINUX_REBOOT_CMD_RESTART2, (void*) "download");
#endif
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_msg(Msg("run_script=Running {1} script...")(display_name));
chmod(script_file, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
TWFunc::Exec_Cmd(script_file);
gui_msg("done=Done.");
}
}
int TWFunc::removeDir(const string path, bool skipParent) {
DIR *d = opendir(path.c_str());
int r = 0;
string new_path;
if (d == NULL) {
gui_msg(Msg(msg::kError, "error_opening_strerr=Error opening: '{1}' ({2})")(path)(strerror(errno)));
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;
}
bool TWFunc::Install_SuperSU(void) {
if (!PartitionManager.Mount_By_Path("/system", true))
return false;
check_and_run_script("/supersu/install-supersu.sh", "SuperSU");
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) {
gui_msg(Msg(msg::kError, "error_opening_strerr=Error opening: '{1}' ({2})")(Restore_Path)(strerror(errno)));
return false;
}
struct dirent* de;
while ((de = readdir(d)) != NULL) {
Filename = Restore_Path;
Filename += de->d_name;
if (TWFunc::Get_File_Type(Filename) == ENCRYPTED) {
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);
}
replace(Backup_Name.begin(), Backup_Name.end(), ' ', '_');
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");
// 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)
{
int result = -1;
std::string secondary_brightness_file;
if (DataManager::GetIntValue("tw_has_brightnesss_file")) {
LOGINFO("TWFunc::Set_Brightness: Setting brightness control to %s\n", brightness_value.c_str());
result = TWFunc::write_file(DataManager::GetStrValue("tw_brightness_file"), brightness_value);
DataManager::GetValue("tw_secondary_brightness_file", secondary_brightness_file);
if (!secondary_brightness_file.empty()) {
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;
}
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();
}
void TWFunc::Disable_Stock_Recovery_Replace(void) {
if (PartitionManager.Mount_By_Path("/system", false)) {
// Disable flashing of stock recovery
if (TWFunc::Path_Exists("/system/recovery-from-boot.p")) {
rename("/system/recovery-from-boot.p", "/system/recovery-from-boot.bak");
gui_msg("rename_stock=Renamed stock recovery file in /system to prevent the stock ROM from replacing TWRP.");
sync();
}
PartitionManager.UnMount_By_Path("/system", false);
}
}
unsigned long long TWFunc::IOCTL_Get_Block_Size(const char* block_device) {
unsigned long block_device_size;
int ret = 0;
int fd = open(block_device, O_RDONLY);
if (fd < 0) {
LOGINFO("Find_Partition_Size: Failed to open '%s', (%s)\n", block_device, strerror(errno));
} else {
ret = ioctl(fd, BLKGETSIZE, &block_device_size);
close(fd);
if (ret) {
LOGINFO("Find_Partition_Size: ioctl error: (%s)\n", strerror(errno));
} else {
return (unsigned long long)(block_device_size) * 512LLU;
}
}
return 0;
}
#endif // ndef BUILD_TWRPTAR_MAIN