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twrpTar.cpp
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/*
Copyright 2013 to 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/>.
*/
extern "C" {
#include "libtar/libtar.h"
#include "twrpTar.h"
#include "tarWrite.h"
}
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <fstream>
#include <iostream>
#include <string>
#include <sstream>
#include <vector>
#include <csignal>
#include <dirent.h>
#include <libgen.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <zlib.h>
#include <semaphore.h>
#include "twrpTar.hpp"
#include "twcommon.h"
#include "variables.h"
#include "adbbu/libtwadbbu.hpp"
#include "twrp-functions.hpp"
#include "gui/gui.hpp"
#include "progresstracking.hpp"
#ifndef BUILD_TWRPTAR_MAIN
#include "data.hpp"
#include "infomanager.hpp"
#include "set_metadata.h"
#endif //ndef BUILD_TWRPTAR_MAIN
#ifdef TW_INCLUDE_FBE
#ifdef USE_FSCRYPT
#include "fscrypt_policy.h"
#endif
#endif
#ifdef USE_FSCRYPT
#define TWTAR_FLAGS TAR_GNU | TAR_STORE_SELINUX | TAR_STORE_POSIX_CAP | TAR_STORE_ANDROID_USER_XATTR | TAR_STORE_FSCRYPT_POL
#else
#define TWTAR_FLAGS TAR_GNU | TAR_STORE_SELINUX | TAR_STORE_POSIX_CAP | TAR_STORE_ANDROID_USER_XATTR
#endif
using namespace std;
twrpTar::twrpTar(void) {
use_encryption = 0;
userdata_encryption = 0;
use_compression = 0;
split_archives = 0;
pigz_pid = 0;
oaes_pid = 0;
Total_Backup_Size = 0;
Archive_Current_Size = 0;
include_root_dir = true;
tar_type.openfunc = open;
tar_type.closefunc = close;
tar_type.readfunc = read;
input_fd = -1;
output_fd = -1;
backup_exclusions = NULL;
#ifdef USE_FSCRYPT
fscrypt_set_mode();
#endif
}
twrpTar::~twrpTar(void) {
// Do nothing
}
void twrpTar::setfn(string fn) {
tarfn = fn;
}
void twrpTar::setdir(string dir) {
tardir = dir;
}
void twrpTar::setsize(unsigned long long backup_size) {
Total_Backup_Size = backup_size;
}
void twrpTar::setpassword(string pass) {
password = pass;
}
void twrpTar::Signal_Kill(int signum) {
_exit(255);
}
void twrpTar::Set_Archive_Type(Archive_Type archive_type) {
current_archive_type = archive_type;
}
int twrpTar::createTarFork(pid_t *tar_fork_pid) {
int status = 0;
int progress_pipe[2];
file_count = 0;
if (backup_exclusions == NULL) {
LOGINFO("backup_exclusions is NULL\n");
return -1;
}
#ifndef BUILD_TWRPTAR_MAIN
if (part_settings->adbbackup) {
std::string Backup_FileName(tarfn);
if (!twadbbu::Write_TWFN(Backup_FileName, Total_Backup_Size, use_compression))
return -1;
}
#endif
if (pipe(progress_pipe) < 0) {
LOGINFO("Error creating progress tracking pipe\n");
gui_err("backup_error=Error creating backup.");
return -1;
}
if ((*tar_fork_pid = fork()) == -1) {
LOGINFO("create tar failed to fork.\n");
gui_err("backup_error=Error creating backup.");
close(progress_pipe[0]);
close(progress_pipe[1]);
return -1;
}
if (*tar_fork_pid == 0) {
// Child process
// Child closes input side of progress pipe
signal(SIGUSR2, twrpTar::Signal_Kill);
close(progress_pipe[0]);
progress_pipe_fd = progress_pipe[1];
if (use_encryption || userdata_encryption) {
LOGINFO("Using encryption\n");
DIR* d;
struct dirent* de;
unsigned long long regular_size = 0, encrypt_size = 0, target_size = 0, total_size;
unsigned enc_thread_id = 1, regular_thread_id = 0, i, start_thread_id = 1, core_count = 1;
int item_len, ret, thread_error = 0;
std::vector<TarListStruct> RegularList;
std::vector<TarListStruct> EncryptList;
string FileName;
struct TarListStruct TarItem;
twrpTar reg, enc[9];
struct stat st;
pthread_t enc_thread[9];
pthread_attr_t tattr;
void *thread_return;
core_count = sysconf(_SC_NPROCESSORS_CONF);
if (core_count > 8)
core_count = 8;
LOGINFO(" Core Count : %u\n", core_count);
Archive_Current_Size = 0;
d = opendir(tardir.c_str());
if (d == NULL) {
gui_msg(Msg(msg::kError, "error_opening_strerr=Error opening: '{1}' ({2})")(tardir)(strerror(errno)));
close(progress_pipe[1]);
_exit(-1);
}
// Figure out the size of all data to be encrypted and create a list of unencrypted files
while ((de = readdir(d)) != NULL) {
FileName = tardir + "/" + de->d_name;
if (de->d_type == DT_BLK || de->d_type == DT_CHR || backup_exclusions->check_skip_dirs(FileName))
continue;
if (de->d_type == DT_DIR) {
item_len = strlen(de->d_name);
if (userdata_encryption && ((item_len >= 3 && strncmp(de->d_name, "app", 3) == 0) || (item_len >= 6 && strncmp(de->d_name, "dalvik", 6) == 0))) {
ret = Generate_TarList(FileName, &RegularList, &target_size, ®ular_thread_id);
if (ret < 0) {
LOGINFO("Error in Generate_TarList with regular list!\n");
gui_err("backup_error=Error creating backup.");
closedir(d);
close(progress_pipe_fd);
close(progress_pipe[1]);
_exit(-1);
}
file_count = (unsigned long long)(ret);
regular_size += backup_exclusions->Get_Folder_Size(FileName);
} else {
encrypt_size += backup_exclusions->Get_Folder_Size(FileName);
}
} else if (de->d_type == DT_REG) {
stat(FileName.c_str(), &st);
encrypt_size += (unsigned long long)(st.st_size);
}
}
closedir(d);
target_size = encrypt_size / core_count;
target_size++;
LOGINFO(" Unencrypted size: %llu\n", regular_size);
LOGINFO(" Encrypted size : %llu\n", encrypt_size);
LOGINFO(" Target size : %llu\n", target_size);
if (!userdata_encryption) {
enc_thread_id = 0;
start_thread_id = 0;
core_count--;
}
Archive_Current_Size = 0;
d = opendir(tardir.c_str());
if (d == NULL) {
gui_msg(Msg(msg::kError, "error_opening_strerr=Error opening: '{1}' ({2})")(tardir)(strerror(errno)));
close(progress_pipe[1]);
_exit(-1);
}
// Divide up the encrypted file list for threading
while ((de = readdir(d)) != NULL) {
FileName = tardir + "/" + de->d_name;
if (de->d_type == DT_BLK || de->d_type == DT_CHR || backup_exclusions->check_skip_dirs(FileName))
continue;
if (de->d_type == DT_DIR) {
item_len = strlen(de->d_name);
if (userdata_encryption && ((item_len >= 3 && strncmp(de->d_name, "app", 3) == 0) || (item_len >= 6 && strncmp(de->d_name, "dalvik", 6) == 0))) {
// Do nothing, we added these to RegularList earlier
} else {
FileName = tardir + "/" + de->d_name;
ret = Generate_TarList(FileName, &EncryptList, &target_size, &enc_thread_id);
if (ret < 0) {
LOGINFO("Error in Generate_TarList with encrypted list!\n");
gui_err("backup_error=Error creating backup.");
closedir(d);
close(progress_pipe[1]);
_exit(-1);
}
file_count += (unsigned long long)(ret);
}
} else if (de->d_type == DT_REG || de->d_type == DT_LNK) {
stat(FileName.c_str(), &st);
if (de->d_type == DT_REG)
Archive_Current_Size += (unsigned long long)(st.st_size);
TarItem.fn = FileName;
TarItem.thread_id = enc_thread_id;
EncryptList.push_back(TarItem);
file_count++;
}
}
closedir(d);
if (enc_thread_id != core_count) {
LOGINFO("Error dividing up threads for encryption, %u threads for %u cores!\n", enc_thread_id, core_count);
if (enc_thread_id > core_count) {
gui_err("backup_error=Error creating backup.");
close(progress_pipe[1]);
_exit(-1);
} else {
LOGINFO("Continuining anyway.");
}
}
// Send file count to parent
write(progress_pipe_fd, &file_count, sizeof(file_count));
// Send backup size to parent
total_size = regular_size + encrypt_size;
write(progress_pipe_fd, &total_size, sizeof(total_size));
if (userdata_encryption) {
// Create a backup of unencrypted data
reg.setfn(tarfn);
reg.ItemList = &RegularList;
reg.thread_id = 0;
reg.use_encryption = 0;
reg.use_compression = use_compression;
reg.split_archives = 1;
reg.progress_pipe_fd = progress_pipe_fd;
reg.part_settings = part_settings;
LOGINFO("Creating unencrypted backup...\n");
if (createList((void*)®) != 0) {
LOGINFO("Error creating unencrypted backup.\n");
gui_err("backup_error=Error creating backup.");
close(progress_pipe[1]);
_exit(-1);
}
}
if (pthread_attr_init(&tattr)) {
LOGINFO("Unable to pthread_attr_init\n");
gui_err("backup_error=Error creating backup.");
close(progress_pipe[1]);
_exit(-1);
}
if (pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_JOINABLE)) {
LOGINFO("Error setting pthread_attr_setdetachstate\n");
gui_err("backup_error=Error creating backup.");
close(progress_pipe[1]);
_exit(-1);
}
if (pthread_attr_setscope(&tattr, PTHREAD_SCOPE_SYSTEM)) {
LOGINFO("Error setting pthread_attr_setscope\n");
gui_err("backup_error=Error creating backup.");
close(progress_pipe[1]);
_exit(-1);
}
/*if (pthread_attr_setstacksize(&tattr, 524288)) {
LOGERR("Error setting pthread_attr_setstacksize\n");
close(progress_pipe[1]);
_exit(-1);
}*/
// Create threads for the divided up encryption lists
for (i = start_thread_id; i <= core_count; i++) {
enc[i].setdir(tardir);
enc[i].setfn(tarfn);
enc[i].ItemList = &EncryptList;
enc[i].thread_id = i;
enc[i].use_encryption = use_encryption;
enc[i].setpassword(password);
enc[i].use_compression = use_compression;
enc[i].split_archives = 1;
enc[i].progress_pipe_fd = progress_pipe_fd;
enc[i].part_settings = part_settings;
LOGINFO("Start encryption thread %i\n", i);
ret = pthread_create(&enc_thread[i], &tattr, createList, (void*)&enc[i]);
if (ret) {
LOGINFO("Unable to create %i thread for encryption! %i\nContinuing in same thread (backup will be slower).\n", i, ret);
if (createList((void*)&enc[i]) != 0) {
LOGINFO("Error creating encrypted backup %i.\n", i);
gui_err("backup_error=Error creating backup.");
close(progress_pipe[1]);
_exit(-1);
} else {
enc[i].thread_id = i + 1;
}
}
usleep(100000); // Need a short delay before starting the next thread or the threads will never finish for some reason.
}
if (pthread_attr_destroy(&tattr)) {
LOGINFO("Failed to pthread_attr_destroy\n");
}
for (i = start_thread_id; i <= core_count; i++) {
if (enc[i].thread_id == i) {
if (pthread_join(enc_thread[i], &thread_return)) {
LOGINFO("Error joining thread %i\n", i);
gui_err("backup_error=Error creating backup.");
close(progress_pipe[1]);
_exit(-1);
} else {
LOGINFO("Joined thread %i.\n", i);
ret = (int)(intptr_t)thread_return;
if (ret != 0) {
thread_error = 1;
LOGINFO("Thread %i returned an error %i.\n", i, ret);
gui_err("backup_error=Error creating backup.");
close(progress_pipe[1]);
_exit(-1);
}
}
} else {
LOGINFO("Skipping joining thread %i because of pthread failure.\n", i);
}
}
if (thread_error) {
LOGINFO("Error returned by one or more threads.\n");
gui_err("backup_error=Error creating backup.");
close(progress_pipe[1]);
_exit(-1);
}
LOGINFO("Finished encrypted backup.\n");
close(progress_pipe[1]);
_exit(0);
} else {
// Not encrypted
std::vector<TarListStruct> FileList;
unsigned thread_id = 0;
unsigned long long target_size = 0;
twrpTar reg;
int ret;
// Generate list of files to back up
ret = Generate_TarList(tardir, &FileList, &target_size, &thread_id);
if (ret < 0) {
LOGINFO("Error in Generate_TarList!\n");
gui_err("backup_error=Error creating backup.");
close(progress_pipe[1]);
_exit(-1);
}
file_count = (unsigned long long)(ret);
// Create a backup
reg.setfn(tarfn);
reg.ItemList = &FileList;
reg.thread_id = 0;
reg.use_encryption = 0;
reg.use_compression = use_compression;
reg.setsize(Total_Backup_Size);
reg.progress_pipe_fd = progress_pipe_fd;
reg.part_settings = part_settings;
if (Total_Backup_Size > MAX_ARCHIVE_SIZE && !part_settings->adbbackup) {
gui_msg("split_backup=Breaking backup file into multiple archives...");
reg.split_archives = 1;
} else {
reg.split_archives = 0;
}
LOGINFO("Creating backup...\n");
write(progress_pipe_fd, &file_count, sizeof(file_count));
write(progress_pipe_fd, &Total_Backup_Size, sizeof(Total_Backup_Size));
if (createList((void*)®) != 0) {
gui_err("backup_error=Error creating backup.");
close(progress_pipe[1]);
_exit(-1);
}
close(progress_pipe[1]);
_exit(0);
}
} else {
// Parent side
unsigned long long fs, size_backup = 0, files_backup = 0, file_count = 0;
int first_data = 0;
// Parent closes output side
close(progress_pipe[1]);
// Read progress data from children
while (read(progress_pipe[0], &fs, sizeof(fs)) > 0) {
if (first_data == 0) {
// First incoming data is the file count
file_count = fs;
if (file_count == 0) file_count = 1; // prevent division by 0 below
first_data = 1;
} else if (first_data == 1) {
// Second incoming data is total size
first_data = 2;
part_settings->progress->SetSizeCount(fs, file_count);
} else {
if (fs > 0) {
size_backup += fs;
part_settings->progress->UpdateSize(size_backup);
} else { // fs == 0 increments the file counter
files_backup++;
part_settings->progress->UpdateSizeCount(size_backup, files_backup);
}
}
}
close(progress_pipe[0]);
#ifndef BUILD_TWRPTAR_MAIN
DataManager::SetValue("tw_file_progress", "");
DataManager::SetValue("tw_size_progress", "");
part_settings->progress->DisplayFileCount(false);
part_settings->progress->UpdateDisplayDetails(true);
if (!part_settings->adbbackup) {
InfoManager backup_info(backup_folder + "/" + partition_name + ".info");
backup_info.SetValue("backup_size", size_backup);
if (use_compression && use_encryption)
backup_info.SetValue("backup_type", COMPRESSED_ENCRYPTED);
else if (use_encryption)
backup_info.SetValue("backup_type", ENCRYPTED);
else if (use_compression)
backup_info.SetValue("backup_type", COMPRESSED);
else
backup_info.SetValue("backup_type", UNCOMPRESSED);
backup_info.SetValue("file_count", files_backup);
backup_info.SaveValues();
}
#endif //ndef BUILD_TWRPTAR_MAIN
if (TWFunc::Wait_For_Child(*tar_fork_pid, &status, "createTarFork()") != 0)
return -1;
}
return 0;
}
int twrpTar::extractTarFork() {
int status = 0;
pid_t tar_fork_pid;
int progress_pipe[2];
if (pipe(progress_pipe) < 0) {
LOGINFO("Error creating progress tracking pipe\n");
gui_err("restore_error=Error during restore process.");
return -1;
}
tar_fork_pid = fork();
if (tar_fork_pid >= 0) // fork was successful
{
if (tar_fork_pid == 0) // child process
{
close(progress_pipe[0]);
progress_pipe_fd = progress_pipe[1];
if (TWFunc::Path_Exists(tarfn) || part_settings->adbbackup) {
LOGINFO("Single archive\n");
if (extract() != 0)
_exit(-1);
else {
_exit(0);
}
} else {
LOGINFO("Multiple archives\n");
string temp;
char actual_filename[255];
twrpTar tars[9];
pthread_t tar_thread[9];
pthread_attr_t tattr;
unsigned thread_count = 0, i, start_thread_id = 1;
int ret, thread_error = 0;
void *thread_return;
basefn = tarfn;
temp = basefn + "%i%02i";
tarfn += "000";
if (!TWFunc::Path_Exists(tarfn)) {
LOGINFO("Unable to locate '%s' or '%s'\n", basefn.c_str(), tarfn.c_str());
gui_err("restore_error=Error during restore process.");
close(progress_pipe_fd);
_exit(-1);
}
if (TWFunc::Get_File_Type(tarfn) != 2) {
LOGINFO("First tar file '%s' not encrypted\n", tarfn.c_str());
tars[0].basefn = basefn;
tars[0].thread_id = 0;
tars[0].progress_pipe_fd = progress_pipe_fd;
tars[0].part_settings = part_settings;
if (extractMulti((void*)&tars[0]) != 0) {
LOGINFO("Error extracting split archive.\n");
gui_err("restore_error=Error during restore process.");
close(progress_pipe_fd);
_exit(-1);
}
} else {
start_thread_id = 0;
}
// Start threading encrypted restores
if (pthread_attr_init(&tattr)) {
LOGINFO("Unable to pthread_attr_init\n");
gui_err("restore_error=Error during restore process.");
close(progress_pipe_fd);
_exit(-1);
}
if (pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_JOINABLE)) {
LOGINFO("Error setting pthread_attr_setdetachstate\n");
gui_err("restore_error=Error during restore process.");
close(progress_pipe_fd);
_exit(-1);
}
if (pthread_attr_setscope(&tattr, PTHREAD_SCOPE_SYSTEM)) {
LOGINFO("Error setting pthread_attr_setscope\n");
gui_err("restore_error=Error during restore process.");
close(progress_pipe_fd);
_exit(-1);
}
/*if (pthread_attr_setstacksize(&tattr, 524288)) {
LOGERR("Error setting pthread_attr_setstacksize\n");
close(progress_pipe_fd);
_exit(-1);
}*/
for (i = start_thread_id; i < 9; i++) {
sprintf(actual_filename, temp.c_str(), i, 0);
if (TWFunc::Path_Exists(actual_filename)) {
thread_count++;
tars[i].basefn = basefn;
tars[i].setpassword(password);
tars[i].thread_id = i;
tars[i].progress_pipe_fd = progress_pipe_fd;
tars[i].part_settings = part_settings;
LOGINFO("Creating extract thread ID %i\n", i);
ret = pthread_create(&tar_thread[i], &tattr, extractMulti, (void*)&tars[i]);
if (ret) {
LOGINFO("Unable to create %i thread for extraction! %i\nContinuing in same thread (restore will be slower).\n", i, ret);
if (extractMulti((void*)&tars[i]) != 0) {
LOGINFO("Error extracting backup in thread %i.\n", i);
gui_err("restore_error=Error during restore process.");
close(progress_pipe_fd);
_exit(-1);
} else {
tars[i].thread_id = i + 1;
}
}
usleep(100000); // Need a short delay before starting the next thread or the threads will never finish for some reason.
} else {
break;
}
}
for (i = start_thread_id; i < thread_count + start_thread_id; i++) {
if (tars[i].thread_id == i) {
if (pthread_join(tar_thread[i], &thread_return)) {
LOGINFO("Error joining thread %i\n", i);
gui_err("restore_error=Error during restore process.");
close(progress_pipe_fd);
_exit(-1);
} else {
LOGINFO("Joined thread %i.\n", i);
ret = (int)(intptr_t)thread_return;
if (ret != 0) {
thread_error = 1;
LOGINFO("Thread %i returned an error %i.\n", i, ret);
gui_err("restore_error=Error during restore process.");
close(progress_pipe_fd);
_exit(-1);
}
}
} else {
LOGINFO("Skipping joining thread %i because of pthread failure.\n", i);
}
}
if (thread_error) {
LOGINFO("Error returned by one or more threads.\n");
gui_err("restore_error=Error during restore process.");
close(progress_pipe_fd);
_exit(-1);
}
LOGINFO("Finished encrypted restore.\n");
close(progress_pipe_fd);
_exit(0);
}
}
else // parent process
{
unsigned long long fs, size_backup = 0;
// Parent closes output side
close(progress_pipe[1]);
// Read progress data from children
while (read(progress_pipe[0], &fs, sizeof(fs)) > 0) {
size_backup += fs;
part_settings->progress->UpdateSize(size_backup);
}
close(progress_pipe[0]);
part_settings->progress->UpdateDisplayDetails(true);
if (TWFunc::Wait_For_Child(tar_fork_pid, &status, "extractTarFork()") != 0)
return -1;
}
}
else // fork has failed
{
close(progress_pipe[0]);
close(progress_pipe[1]);
LOGINFO("extract tar failed to fork.\n");
return -1;
}
return 0;
}
int twrpTar::Generate_TarList(string Path, std::vector<TarListStruct> *TarList, unsigned long long *Target_Size, unsigned *thread_id) {
DIR* d;
struct dirent* de;
struct stat st;
string FileName;
struct TarListStruct TarItem;
int ret, file_count;
file_count = 0;
d = opendir(Path.c_str());
if (d == NULL) {
gui_msg(Msg(msg::kError, "error_opening_strerr=Error opening: '{1}' ({2})")(Path)(strerror(errno)));
closedir(d);
return -1;
}
while ((de = readdir(d)) != NULL) {
FileName = Path + "/" + de->d_name;
if (de->d_type == DT_BLK || de->d_type == DT_CHR || backup_exclusions->check_skip_dirs(FileName))
continue;
TarItem.fn = FileName;
TarItem.thread_id = *thread_id;
if (de->d_type == DT_DIR) {
TarList->push_back(TarItem);
ret = Generate_TarList(FileName, TarList, Target_Size, thread_id);
if (ret < 0)
return -1;
file_count += ret;
} else if (de->d_type == DT_REG || de->d_type == DT_LNK) {
stat(FileName.c_str(), &st);
TarList->push_back(TarItem);
if (de->d_type == DT_REG) {
file_count++;
Archive_Current_Size += st.st_size;
}
if (Archive_Current_Size != 0 && *Target_Size != 0 && Archive_Current_Size > *Target_Size) {
*thread_id = *thread_id + 1;
Archive_Current_Size = 0;
}
}
}
closedir(d);
return file_count;
}
int twrpTar::extractTar() {
char* charRootDir = (char*) tardir.c_str();
if (openTar() == -1)
return -1;
if (tar_extract_all(t, charRootDir, &progress_pipe_fd) != 0) {
LOGINFO("Unable to extract tar archive '%s'\n", tarfn.c_str());
gui_err("restore_error=Error during restore process.");
return -1;
}
if (tar_close(t) != 0) {
LOGINFO("Unable to close tar file\n");
gui_err("restore_error=Error during restore process.");
return -1;
}
#ifndef BUILD_TWRPTAR_MAIN
if (part_settings->adbbackup) {
if (!twadbbu::Write_TWEOF())
return -1;
}
#endif
return 0;
}
int twrpTar::extract() {
if (!part_settings->adbbackup) {
LOGINFO("Setting archive type\n");
Set_Archive_Type(TWFunc::Get_File_Type(tarfn));
}
else {
if (part_settings->adb_compression == 1)
current_archive_type = COMPRESSED;
else
current_archive_type = UNCOMPRESSED;
}
if (current_archive_type == COMPRESSED) {
//if you return the extractTGZ function directly, stack crashes happen
LOGINFO("Extracting gzipped tar\n");
int ret = extractTar();
return ret;
} else if (current_archive_type == ENCRYPTED) {
int ret = TWFunc::Try_Decrypting_File(tarfn, password);
if (ret < 1) {
gui_msg(Msg(msg::kError, "fail_decrypt_tar=Failed to decrypt tar file '{1}'")(tarfn));
return -1;
}
if (ret == 1) {
LOGINFO("Decrypted file is not in tar format.\n");
gui_err("restore_error=Error during restore process.");
return -1;
}
if (ret == 3) {
LOGINFO("Extracting encrypted and compressed tar.\n");
current_archive_type = COMPRESSED_ENCRYPTED;
} else
LOGINFO("Extracting encrypted tar.\n");
return extractTar();
} else {
LOGINFO("Extracting uncompressed tar\n");
return extractTar();
}
}
int twrpTar::tarList(std::vector<TarListStruct> *TarList, unsigned thread_id) {
struct stat st;
char buf[PATH_MAX];
int list_size = TarList->size(), i = 0, archive_count = 0;
string temp;
char actual_filename[PATH_MAX];
unsigned long long fs;
if (split_archives) {
basefn = tarfn;
temp = basefn + "%i%02i";
sprintf(actual_filename, temp.c_str(), thread_id, archive_count);
tarfn = actual_filename;
include_root_dir = true;
} else {
include_root_dir = false;
}
if (part_settings->adbbackup)
LOGINFO("Writing tar file '%s' to adb backup\n", tarfn.c_str());
else
LOGINFO("Creating tar file '%s'\n", tarfn.c_str());
if (createTar() != 0) {
LOGINFO("Error creating tar '%s' for thread %i\n", tarfn.c_str(), thread_id);
gui_err("backup_error=Error creating backup.");
return -2;
}
Archive_Current_Size = 0;
while (i < list_size) {
if (TarList->at(i).thread_id == thread_id) {
strcpy(buf, TarList->at(i).fn.c_str());
lstat(buf, &st);
if (S_ISREG(st.st_mode)) { // item is a regular file
fs = (unsigned long long)(st.st_size);
if (split_archives && Archive_Current_Size + fs > MAX_ARCHIVE_SIZE) {
if (closeTar() != 0) {
LOGINFO("Error closing '%s' on thread %i\n", tarfn.c_str(), thread_id);
gui_err("backup_error=Error creating backup.");
return -3;
}
archive_count++;
gui_msg(Msg("split_thread=Splitting thread ID {1} into archive {2}")(thread_id)(archive_count + 1));
if (archive_count > 99) {
LOGINFO("Too many archives for thread %i\n", thread_id);
gui_err("backup_error=Error creating backup.");
return -4;
}
sprintf(actual_filename, temp.c_str(), thread_id, archive_count);
tarfn = actual_filename;
if (createTar() != 0) {
LOGINFO("Error creating tar '%s' for thread %i\n", tarfn.c_str(), thread_id);
gui_err("backup_error=Error creating backup.");
return -2;
}
Archive_Current_Size = 0;
}
Archive_Current_Size += fs;
fs = 0; // Sending a 0 size to the pipe tells it to increment the file counter
write(progress_pipe_fd, &fs, sizeof(fs));
}
LOGINFO("addFile '%s' including root: %i\n", buf, include_root_dir);
if (addFile(buf, include_root_dir) != 0) {
LOGINFO("Error adding file '%s' to '%s'\n", buf, tarfn.c_str());
gui_err("backup_error=Error creating backup.");
return -1;
}
}
i++;
}
if (closeTar() != 0) {
LOGINFO("Error closing '%s' on thread %i\n", tarfn.c_str(), thread_id);
gui_err("backup_error=Error creating backup.");
return -3;
}
LOGINFO("Thread id %i tarList done, %i archives.\n", thread_id, archive_count);
return 0;
}
void* twrpTar::createList(void *cookie) {
twrpTar* threadTar = (twrpTar*) cookie;
if (threadTar->tarList(threadTar->ItemList, threadTar->thread_id) != 0) {
LOGINFO("ERROR tarList for thread ID %i\n", threadTar->thread_id);
return (void*)-2;
}
LOGINFO("Thread ID %i finished successfully.\n", threadTar->thread_id);
return (void*)0;
}
void* twrpTar::extractMulti(void *cookie) {
twrpTar* threadTar = (twrpTar*) cookie;
int archive_count = 0;
string temp = threadTar->basefn + "%i%02i";
char actual_filename[255];
sprintf(actual_filename, temp.c_str(), threadTar->thread_id, archive_count);
while (TWFunc::Path_Exists(actual_filename)) {
threadTar->tarfn = actual_filename;
if (threadTar->extract() != 0) {
LOGINFO("Error extracting '%s' in thread ID %i\n", actual_filename, threadTar->thread_id);
return (void*)-2;
}
archive_count++;
if (archive_count > 99)
break;
sprintf(actual_filename, temp.c_str(), threadTar->thread_id, archive_count);
}
LOGINFO("Thread ID %i finished successfully.\n", threadTar->thread_id);
return (void*)0;
}
int twrpTar::addFilesToExistingTar(vector <string> files, string fn) {
char* charTarFile = (char*) fn.c_str();
if (tar_open(&t, charTarFile, NULL, O_CLOEXEC | O_RDONLY | O_LARGEFILE, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH, TWTAR_FLAGS) == -1)
return -1;
removeEOT(charTarFile);
if (tar_open(&t, charTarFile, NULL, O_CLOEXEC | O_WRONLY | O_APPEND | O_LARGEFILE, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH, TWTAR_FLAGS) == -1)
return -1;
for (unsigned int i = 0; i < files.size(); ++i) {
char* file = (char*) files.at(i).c_str();
if (tar_append_file(t, file, file) == -1)
return -1;
}
if (tar_append_eof(t) == -1)
return -1;
if (tar_close(t) == -1)
return -1;
return 0;
}
int twrpTar::createTar() {
char* charTarFile = (char*) tarfn.c_str();
char* charRootDir = (char*) tardir.c_str();
if (use_encryption && use_compression) {
// Compressed and encrypted
current_archive_type = COMPRESSED_ENCRYPTED;
LOGINFO("Using encryption and compression...\n");
int i, pipes[4];
if (pipe2(pipes, O_CLOEXEC) < 0) {
LOGINFO("Error creating first pipe\n");
gui_err("backup_error=Error creating backup.");
return -1;
}
if (pipe2(pipes + 2, O_CLOEXEC) < 0) {
LOGINFO("Error creating second pipe\n");
gui_err("backup_error=Error creating backup.");
return -1;
}
output_fd = open(tarfn.c_str(), O_CLOEXEC | O_WRONLY | O_CREAT | O_EXCL | O_LARGEFILE, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
if (output_fd < 0) {
gui_msg(Msg(msg::kError, "error_opening_strerr=Error opening: '{1}' ({2})")(tarfn)(strerror(errno)));
for (i = 0; i < 4; i++)
close(pipes[i]); // close all
return -1;
}
pigz_pid = fork();
if (pigz_pid < 0) {
LOGINFO("pigz fork() failed\n");
gui_err("backup_error=Error creating backup.");
close(output_fd);
for (i = 0; i < 4; i++)
close(pipes[i]); // close all
return -1;
} else if (pigz_pid == 0) {
// pigz Child
dup2(pipes[0], STDIN_FILENO);
dup2(pipes[3], STDOUT_FILENO);
if (execlp("pigz", "pigz", "-", NULL) < 0) {
LOGINFO("execlp pigz ERROR!\n");
gui_err("backup_error=Error creating backup.");
_exit(-1);
}
} else {
// Parent
oaes_pid = fork();
if (oaes_pid < 0) {
LOGINFO("openaes fork() failed\n");
gui_err("backup_error=Error creating backup.");
close(output_fd);
for (i = 0; i < 4; i++)
close(pipes[i]); // close all
return -1;
} else if (oaes_pid == 0) {
// openaes Child
dup2(pipes[2], STDIN_FILENO);
dup2(output_fd, STDOUT_FILENO);
if (execlp("openaes", "openaes", "enc", "--key", password.c_str(), NULL) < 0) {
LOGINFO("execlp openaes ERROR!\n");
gui_err("backup_error=Error creating backup.");
_exit(-1);
}
} else {
// Parent
close(pipes[0]);
close(pipes[2]);
close(pipes[3]);
fd = pipes[1];
init_libtar_no_buffer(progress_pipe_fd);
tar_type.writefunc = write_tar_no_buffer;
if (tar_fdopen(&t, fd, charRootDir, &tar_type, O_CLOEXEC | O_WRONLY | O_CREAT | O_EXCL | O_LARGEFILE, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH, TWTAR_FLAGS) != 0) {
close(fd);
LOGINFO("tar_fdopen failed\n");
gui_err("backup_error=Error creating backup.");
return -1;
}
return 0;
}
}
} else if (use_compression) {
// Compressed
current_archive_type = COMPRESSED;
LOGINFO("Using compression...\n");
int pigzfd[2];
if (part_settings->adbbackup) {
LOGINFO("opening TW_ADB_BACKUP compressed stream\n");
output_fd = open(TW_ADB_BACKUP, O_WRONLY);
}
else {
output_fd = open(tarfn.c_str(), O_CLOEXEC | O_WRONLY | O_CREAT | O_EXCL | O_LARGEFILE, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
}
if (output_fd < 0) {
gui_msg(Msg(msg::kError, "error_opening_strerr=Error opening: '{1}' ({2})")(tarfn)(strerror(errno)));
return -1;
}