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twrp-functions.cpp
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/*
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 <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 <cctype>
#include <algorithm>
#include <selinux/label.h>
#include <thread>
#include <android-base/strings.h>
#include <android-base/chrono_utils.h>
#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_message/include/bootloader_message/bootloader_message.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"
}
#ifdef TW_INCLUDE_LIBRESETPROP
#include <resetprop.hpp>
#endif
struct selabel_handle *selinux_handle;
/* Execute a command */
int TWFunc::Exec_Cmd(const string& cmd, string &result, bool combine_stderr) {
FILE* exec;
char buffer[130];
int ret = 0;
std::string popen_cmd = cmd;
if (combine_stderr)
popen_cmd = cmd + " 2>&1";
exec = __popen(popen_cmd.c_str(), "r");
while (!feof(exec)) {
if (fgets(buffer, 128, exec) != NULL) {
result += buffer;
}
}
ret = __pclose(exec);
return ret;
}
int TWFunc::Exec_Cmd(const string& cmd, bool Show_Errors, bool onlyLOGInfo) {
pid_t pid;
int status;
switch(pid = fork())
{
case -1:
LOGERR("Exec_Cmd(): vfork failed: %d!\n", errno);
return -1;
case 0: // child
execl("/system/bin/sh", "sh", "-c", cmd.c_str(), NULL);
_exit(127);
break;
default:
{
if(onlyLOGInfo){
if (TWFunc::Wait_For_Child(pid, &status, cmd, Show_Errors, onlyLOGInfo) != 0){
return -1;
}else{
return 0;
}
}
if (TWFunc::Wait_For_Child(pid, &status, cmd, Show_Errors) != 0){
return -1;
}else{
return 0;
}
}
}
}
// Returns "file.name" from a full /path/to/file.name
string TWFunc::Get_Filename(const 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(const 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, bool Show_Errors, bool onlyLOGInfo) {
pid_t rc_pid;
rc_pid = waitpid(pid, status, 0);
if (rc_pid > 0) {
if (WIFSIGNALED(*status)) {
if (Show_Errors && !onlyLOGInfo)
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
else if(Show_Errors && onlyLOGInfo)
{
LOGINFO("%s process ended with signal: %d",(Child_Name).c_str(),(WTERMSIG(*status)));
}
return -1;
} else if (WEXITSTATUS(*status) == 0) {
LOGINFO("%s process ended with RC=%d\n", Child_Name.c_str(), WEXITSTATUS(*status)); // Success
} else {
if (Show_Errors && !onlyLOGInfo)
gui_msg(Msg(msg::kError, "pid_error={1} process ended with ERROR: {2}")(Child_Name)(WEXITSTATUS(*status))); // Graceful exit, but there was an error
else if(Show_Errors && onlyLOGInfo)
{
LOGINFO("%s process ended with signal: %d",(Child_Name).c_str(),(WEXITSTATUS(*status)));
}
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;
}
int TWFunc::Wait_For_Child_Timeout(pid_t pid, int *status, const string& Child_Name, int timeout) {
pid_t retpid = waitpid(pid, status, WNOHANG);
for (; retpid == 0 && timeout; --timeout) {
sleep(1);
retpid = waitpid(pid, status, WNOHANG);
}
if (retpid == 0 && timeout == 0) {
LOGERR("%s took too long, killing process\n", Child_Name.c_str());
kill(pid, SIGKILL);
for (timeout = 5; retpid == 0 && timeout; --timeout) {
sleep(1);
retpid = waitpid(pid, status, WNOHANG);
}
if (retpid)
LOGINFO("Child process killed successfully\n");
else
LOGINFO("Child process took too long to kill, may be a zombie process\n");
return -1;
} else if (retpid > 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 (retpid < 0) { // 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) {
struct stat st;
return stat(Path.c_str(), &st) == 0;
}
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;
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_Beginning_Slash(const std::string& path) {
std::string res;
size_t pos = path.find_first_of("/");
if (pos != std::string::npos) {
res = path.substr(pos+1);
}
return res;
}
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);
}
bool TWFunc::Wait_For_File(const string& path, std::chrono::nanoseconds timeout) {
android::base::Timer t;
while (t.duration() < timeout) {
struct stat sb;
if (stat(path.c_str(), &sb) != -1) {
return true;
}
std::this_thread::sleep_for(10ms);
}
return false;
}
bool TWFunc::Wait_For_Battery(std::chrono::nanoseconds timeout) {
std::string battery_path;
#ifdef TW_CUSTOM_BATTERY_PATH
battery_path = EXPAND(TW_CUSTOM_BATTERY_PATH);
#else
battery_path = "/sys/class/power_supply/battery";
#endif
if (!battery_path.empty()) return TWFunc::Wait_For_File(battery_path, timeout);
return false;
}
#ifndef BUILD_TWRPTAR_MAIN
// Returns "/path" from a full /path/to/file.name
string TWFunc::Get_Root_Path(const 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;
}
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) {
int logPipe[2];
int pigz_pid;
int destination_fd;
std::string destLogBuffer;
PartitionManager.Mount_By_Path(Destination, false);
size_t extPos = Destination.find(".gz");
std::string uncompressedLog(Destination);
uncompressedLog.replace(extPos, Destination.length(), "");
if (Path_Exists(Destination)) {
Archive_Type type = Get_File_Type(Destination);
if (type == COMPRESSED) {
std::string destFileBuffer;
std::string getCompressedContents = "pigz -c -d " + Destination;
if (Exec_Cmd(getCompressedContents, destFileBuffer, false) < 0) {
LOGINFO("Unable to get destination logfile contents.\n");
return;
}
destLogBuffer.append(destFileBuffer);
}
} else if (Path_Exists(uncompressedLog)) {
std::ifstream uncompressedIfs(uncompressedLog.c_str());
std::stringstream uncompressedSS;
uncompressedSS << uncompressedIfs.rdbuf();
uncompressedIfs.close();
std::string uncompressedLogBuffer(uncompressedSS.str());
destLogBuffer.append(uncompressedLogBuffer);
std::remove(uncompressedLog.c_str());
}
std::ifstream ifs(Source.c_str());
std::stringstream ss;
ss << ifs.rdbuf();
std::string srcLogBuffer(ss.str());
ifs.close();
if (pipe(logPipe) < 0) {
LOGINFO("Unable to open pipe to write to persistent log file: %s\n", Destination.c_str());
}
destination_fd = open(Destination.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0666);
pigz_pid = fork();
if (pigz_pid < 0) {
LOGINFO("fork() failed\n");
close(destination_fd);
close(logPipe[0]);
close(logPipe[1]);
} else if (pigz_pid == 0) {
close(logPipe[1]);
dup2(logPipe[0], fileno(stdin));
dup2(destination_fd, fileno(stdout));
if (execlp("pigz", "pigz", "-", NULL) < 0) {
close(destination_fd);
close(logPipe[0]);
_exit(-1);
}
} else {
close(logPipe[0]);
if (write(logPipe[1], destLogBuffer.c_str(), destLogBuffer.size()) < 0) {
LOGINFO("Unable to append to persistent log: %s\n", Destination.c_str());
close(logPipe[1]);
close(destination_fd);
return;
}
if (write(logPipe[1], srcLogBuffer.c_str(), srcLogBuffer.size()) < 0) {
LOGINFO("Unable to append to persistent log: %s\n", Destination.c_str());
close(logPipe[1]);
close(destination_fd);
return;
}
close(logPipe[1]);
}
close(destination_fd);
}
void TWFunc::Update_Log_File(void) {
std::string recoveryDir = get_log_dir() + "recovery/";
if (get_log_dir() == CACHE_LOGS_DIR) {
if (!PartitionManager.Mount_By_Path(CACHE_LOGS_DIR, false)) {
LOGINFO("Failed to mount %s for TWFunc::Update_Log_File\n", CACHE_LOGS_DIR);
}
}
if (!TWFunc::Path_Exists(recoveryDir)) {
LOGINFO("Recreating %s folder.\n", recoveryDir.c_str());
if (!Create_Dir_Recursive(recoveryDir, S_IRWXU | S_IRWXG | S_IWGRP | S_IXGRP, 0, 0)) {
LOGINFO("Unable to create %s folder.\n", recoveryDir.c_str());
}
}
std::string logCopy = recoveryDir + "log.gz";
std::string lastLogCopy = recoveryDir + "last_log.gz";
copy_file(logCopy, lastLogCopy, 0600);
Copy_Log(TMP_LOG_FILE, logCopy);
chown(logCopy.c_str(), 1000, 1000);
chmod(logCopy.c_str(), 0600);
chmod(lastLogCopy.c_str(), 0640);
if (get_log_dir() == CACHE_LOGS_DIR) {
if (PartitionManager.Mount_By_Path("/cache", false)) {
if (unlink("/cache/recovery/command") && errno != ENOENT) {
LOGINFO("Can't unlink %s\n", "/cache/recovery/command");
}
}
}
sync();
}
void TWFunc::Clear_Bootloader_Message() {
std::string err;
if (!clear_bootloader_message(&err)) {
LOGINFO("%s\n", err.c_str());
}
}
void TWFunc::Update_Intent_File(string Intent) {
if (PartitionManager.Mount_By_Path("/cache", false) && !Intent.empty()) {
TWFunc::write_to_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("/system/bin/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("/system/bin/rebootrecovery.sh", "reboot recovery");
return property_set(ANDROID_RB_PROPERTY, "reboot,recovery");
case rb_bootloader:
check_and_run_script("/system/bin/rebootbootloader.sh", "reboot bootloader");
return property_set(ANDROID_RB_PROPERTY, "reboot,bootloader");
case rb_poweroff:
check_and_run_script("/system/bin/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("/system/bin/rebootdownload.sh", "reboot download");
return property_set(ANDROID_RB_PROPERTY, "reboot,download");
case rb_edl:
check_and_run_script("/system/bin/rebootedl.sh", "reboot edl");
return property_set(ANDROID_RB_PROPERTY, "reboot,edl");
case rb_fastboot:
return property_set(ANDROID_RB_PROPERTY, "reboot,fastboot");
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, bool mount_paths) {
if (mount_paths) {
PartitionManager.Mount_By_Path(src, false);
PartitionManager.Mount_By_Path(dst, false);
}
if (!Path_Exists(src)) {
LOGINFO("Path %s does not exist. Unable to copy file to %s\n", src.c_str(), dst.c_str());
return -1;
}
std::ifstream srcfile(src.c_str(), ios::binary);
std::ofstream dstfile(dst.c_str(), ios::binary);
dstfile << srcfile.rdbuf();
if (dstfile.bad()) {
LOGINFO("Unable to copy file %s to %s\n", src.c_str(), dst.c_str());
return -1;
}
srcfile.close();
dstfile.close();
if (chmod(dst.c_str(), mode) != 0) {
LOGERR("Unable to chmod file: %s. Error: %s\n", dst.c_str(), strerror(errno));
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()) {
std::string line;
while (std::getline(file, line)) {
results += line;
}
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;
}
bool TWFunc::write_to_file(const string& fn, const string& line) {
FILE *file;
file = fopen(fn.c_str(), "w");
if (file != NULL) {
fwrite(line.c_str(), line.size(), 1, file);
fclose(file);
return true;
}
LOGINFO("Cannot find file %s\n", fn.c_str());
return false;
}
bool TWFunc::write_to_file(const string& fn, const std::vector<string> lines) {
FILE *file;
file = fopen(fn.c_str(), "a+");
if (file != NULL) {
for (auto&& line: lines) {
fwrite(line.c_str(), line.size(), 1, file);
fwrite("\n", sizeof(char), 1, file);
}
fclose(file);
return true;
}
return false;
}
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) {
return Partition_Property_Get(Prop_Name, PartitionManager, PartitionManager.Get_Android_Root_Path(), "build.prop");
}
string TWFunc::Partition_Property_Get(string Prop_Name, TWPartitionManager &PartitionManager, string Mount_Point, string prop_file_name) {
bool mount_state = PartitionManager.Is_Mounted_By_Path(Mount_Point);
std::vector<string> buildprop;
string propvalue;
string prop_file;
if (!PartitionManager.Mount_By_Path(Mount_Point, true))
return propvalue;
if (Mount_Point == PartitionManager.Get_Android_Root_Path()) {
prop_file = Mount_Point + "/system/" + prop_file_name;
} else {
prop_file = Mount_Point + "/" + prop_file_name;
}
if (!TWFunc::Path_Exists(prop_file)) {
LOGINFO("Unable to locate file: %s\n", prop_file.c_str());
return propvalue;
}
if (TWFunc::read_file(prop_file, buildprop) != 0) {
LOGINFO("Unable to open %s for getting '%s'.\n", prop_file_name.c_str(), Prop_Name.c_str());
DataManager::SetValue(TW_BACKUP_NAME, Get_Current_Date());
if (!mount_state)
PartitionManager.UnMount_By_Path(Mount_Point, 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(Mount_Point, false);
return propvalue;
}
}
if (!mount_state)
PartitionManager.UnMount_By_Path(Mount_Point, 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;
}
else {
//remove periods from build display so it doesn't confuse the extension code
propvalue.erase(remove(propvalue.begin(), propvalue.end(), '.'), propvalue.end());
}
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(), ' ', '_');
if (PartitionManager.Check_Backup_Name(Backup_Name, false, true) != 0) {
LOGINFO("Auto generated backup name '%s' is not valid, using date instead.\n", Backup_Name.c_str());
DataManager::SetValue(TW_BACKUP_NAME, Get_Current_Date());
} else {
DataManager::SetValue(TW_BACKUP_NAME, Backup_Name);
}
}
void TWFunc::Fixup_Time_On_Boot(const string& time_paths /* = "" */)
{
#ifdef QCOM_RTC_FIX
static bool fixed = false;
if (fixed)
return;
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 > 1517600000) { // Anything older then 2 Feb 2018 19:33:20 GMT will do nicely thank you ;)