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partition.cpp
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partition.cpp
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/* Partition class for TWRP
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* The code was written from scratch by Dees_Troy dees_troy at
* yahoo
*
* Copyright (c) 2012
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/vfs.h>
#include <sys/mount.h>
#include <unistd.h>
#include <dirent.h>
#ifdef TW_INCLUDE_CRYPTO
#include "cutils/properties.h"
#endif
#include "variables.h"
#include "common.h"
#include "partitions.hpp"
#include "data.hpp"
#include "twrp-functions.hpp"
#include "makelist.hpp"
extern "C" {
#include "mtdutils/mtdutils.h"
#include "mtdutils/mounts.h"
}
TWPartition::TWPartition(void) {
Can_Be_Mounted = false;
Can_Be_Wiped = false;
Wipe_During_Factory_Reset = false;
Wipe_Available_in_GUI = false;
Is_SubPartition = false;
Has_SubPartition = false;
SubPartition_Of = "";
Symlink_Path = "";
Symlink_Mount_Point = "";
Mount_Point = "";
Backup_Path = "";
Actual_Block_Device = "";
Primary_Block_Device = "";
Alternate_Block_Device = "";
Removable = false;
Is_Present = false;
Length = 0;
Size = 0;
Used = 0;
Free = 0;
Backup_Size = 0;
Can_Be_Encrypted = false;
Is_Encrypted = false;
Is_Decrypted = false;
Decrypted_Block_Device = "";
Display_Name = "";
Backup_Name = "";
Backup_FileName = "";
MTD_Name = "";
Backup_Method = NONE;
Has_Data_Media = false;
Has_Android_Secure = false;
Is_Storage = false;
Storage_Path = "";
Current_File_System = "";
Fstab_File_System = "";
Format_Block_Size = 0;
}
TWPartition::~TWPartition(void) {
// Do nothing
}
bool TWPartition::Process_Fstab_Line(string Line, bool Display_Error) {
char full_line[MAX_FSTAB_LINE_LENGTH], item[MAX_FSTAB_LINE_LENGTH];
int line_len = Line.size(), index = 0, item_index = 0;
char* ptr;
string Flags;
strncpy(full_line, Line.c_str(), line_len);
for (index = 0; index < line_len; index++) {
if (full_line[index] <= 32)
full_line[index] = '\0';
}
Mount_Point = full_line;
LOGI("Processing '%s'\n", Mount_Point.c_str());
Backup_Path = Mount_Point;
index = Mount_Point.size();
while (index < line_len) {
while (index < line_len && full_line[index] == '\0')
index++;
if (index >= line_len)
continue;
ptr = full_line + index;
if (item_index == 0) {
// File System
Fstab_File_System = ptr;
Current_File_System = ptr;
item_index++;
} else if (item_index == 1) {
// Primary Block Device
if (Fstab_File_System == "mtd" || Fstab_File_System == "yaffs2") {
MTD_Name = ptr;
Find_MTD_Block_Device(MTD_Name);
} else if (Fstab_File_System == "bml") {
if (Mount_Point == "/boot")
MTD_Name = "boot";
else if (Mount_Point == "/recovery")
MTD_Name = "recovery";
Primary_Block_Device = ptr;
if (*ptr != '/')
LOGE("Until we get better BML support, you will have to find and provide the full block device path to the BML devices e.g. /dev/block/bml9 instead of the partition name\n");
} else if (*ptr != '/') {
if (Display_Error)
LOGE("Invalid block device on '%s', '%s', %i\n", Line.c_str(), ptr, index);
else
LOGI("Invalid block device on '%s', '%s', %i\n", Line.c_str(), ptr, index);
return 0;
} else {
Primary_Block_Device = ptr;
Find_Real_Block_Device(Primary_Block_Device, Display_Error);
}
item_index++;
} else if (item_index > 1) {
if (*ptr == '/') {
// Alternate Block Device
Alternate_Block_Device = ptr;
Find_Real_Block_Device(Alternate_Block_Device, Display_Error);
} else if (strlen(ptr) > 7 && strncmp(ptr, "length=", 7) == 0) {
// Partition length
ptr += 7;
Length = atoi(ptr);
} else if (strlen(ptr) > 6 && strncmp(ptr, "flags=", 6) == 0) {
// Custom flags, save for later so that new values aren't overwritten by defaults
ptr += 6;
Flags = ptr;
} else if (strlen(ptr) == 4 && (strncmp(ptr, "NULL", 4) == 0 || strncmp(ptr, "null", 4) == 0 || strncmp(ptr, "null", 4) == 0)) {
// Do nothing
} else {
// Unhandled data
LOGI("Unhandled fstab information: '%s', %i, line: '%s'\n", ptr, index, Line.c_str());
}
}
while (index < line_len && full_line[index] != '\0')
index++;
}
if (!Is_File_System(Fstab_File_System) && !Is_Image(Fstab_File_System)) {
if (Display_Error)
LOGE("Unknown File System: '%s'\n", Fstab_File_System.c_str());
else
LOGI("Unknown File System: '%s'\n", Fstab_File_System.c_str());
return 0;
} else if (Is_File_System(Fstab_File_System)) {
Find_Actual_Block_Device();
Setup_File_System(Display_Error);
if (Mount_Point == "/system") {
Display_Name = "System";
Wipe_Available_in_GUI = true;
} else if (Mount_Point == "/data") {
Display_Name = "Data";
Wipe_Available_in_GUI = true;
Wipe_During_Factory_Reset = true;
#ifdef RECOVERY_SDCARD_ON_DATA
Has_Data_Media = true;
Is_Storage = true;
Storage_Path = "/data/media";
Symlink_Path = Storage_Path;
if (strcmp(EXPAND(TW_EXTERNAL_STORAGE_PATH), "/sdcard") == 0) {
Make_Dir("/emmc", Display_Error);
Symlink_Mount_Point = "/emmc";
} else {
Make_Dir("/sdcard", Display_Error);
Symlink_Mount_Point = "/sdcard";
}
if (Mount(false) && TWFunc::Path_Exists("/data/media/0")) {
Storage_Path = "/data/media/0";
Symlink_Path = Storage_Path;
DataManager::SetValue(TW_INTERNAL_PATH, "/data/media/0");
UnMount(true);
}
#endif
#ifdef TW_INCLUDE_CRYPTO
Can_Be_Encrypted = true;
char crypto_blkdev[255];
property_get("ro.crypto.fs_crypto_blkdev", crypto_blkdev, "error");
if (strcmp(crypto_blkdev, "error") != 0) {
DataManager::SetValue(TW_DATA_BLK_DEVICE, Primary_Block_Device);
DataManager::SetValue(TW_IS_DECRYPTED, 1);
Is_Encrypted = true;
Is_Decrypted = true;
Decrypted_Block_Device = crypto_blkdev;
LOGI("Data already decrypted, new block device: '%s'\n", crypto_blkdev);
} else if (!Mount(false)) {
Is_Encrypted = true;
Is_Decrypted = false;
DataManager::SetValue(TW_IS_ENCRYPTED, 1);
DataManager::SetValue(TW_CRYPTO_PASSWORD, "");
DataManager::SetValue("tw_crypto_display", "");
}
#ifdef RECOVERY_SDCARD_ON_DATA
if (!Is_Encrypted || (Is_Encrypted && Is_Decrypted))
Recreate_Media_Folder();
#endif
#else
#ifdef RECOVERY_SDCARD_ON_DATA
Recreate_Media_Folder();
#endif
#endif
} else if (Mount_Point == "/cache") {
Display_Name = "Cache";
Wipe_Available_in_GUI = true;
Wipe_During_Factory_Reset = true;
if (Mount(false) && !TWFunc::Path_Exists("/cache/recovery/.")) {
string Recreate_Command = "cd /cache && mkdir recovery";
LOGI("Recreating /cache/recovery folder.\n");
system(Recreate_Command.c_str());
}
} else if (Mount_Point == "/datadata") {
Wipe_During_Factory_Reset = true;
Display_Name = "DataData";
Is_SubPartition = true;
SubPartition_Of = "/data";
DataManager::SetValue(TW_HAS_DATADATA, 1);
} else if (Mount_Point == "/sd-ext") {
Wipe_During_Factory_Reset = true;
Display_Name = "SD-Ext";
Wipe_Available_in_GUI = true;
Removable = true;
} else if (Mount_Point == "/boot") {
Display_Name = "Boot";
DataManager::SetValue("tw_boot_is_mountable", 1);
}
#ifdef TW_EXTERNAL_STORAGE_PATH
if (Mount_Point == EXPAND(TW_EXTERNAL_STORAGE_PATH)) {
Is_Storage = true;
Storage_Path = EXPAND(TW_EXTERNAL_STORAGE_PATH);
Removable = true;
}
#else
if (Mount_Point == "/sdcard") {
Is_Storage = true;
Storage_Path = "/sdcard";
Removable = true;
#ifndef RECOVERY_SDCARD_ON_DATA
Setup_AndSec();
Mount_Storage_Retry();
#endif
}
#endif
#ifdef TW_INTERNAL_STORAGE_PATH
if (Mount_Point == EXPAND(TW_INTERNAL_STORAGE_PATH)) {
Is_Storage = true;
Storage_Path = EXPAND(TW_INTERNAL_STORAGE_PATH);
#ifndef RECOVERY_SDCARD_ON_DATA
Setup_AndSec();
Mount_Storage_Retry();
#endif
}
#else
if (Mount_Point == "/emmc") {
Is_Storage = true;
Storage_Path = "/emmc";
#ifndef RECOVERY_SDCARD_ON_DATA
Setup_AndSec();
Mount_Storage_Retry();
#endif
}
#endif
} else if (Is_Image(Fstab_File_System)) {
Find_Actual_Block_Device();
Setup_Image(Display_Error);
}
// Process any custom flags
if (Flags.size() > 0)
Process_Flags(Flags, Display_Error);
return true;
}
bool TWPartition::Process_Flags(string Flags, bool Display_Error) {
char flags[MAX_FSTAB_LINE_LENGTH];
int flags_len, index = 0;
char* ptr;
strcpy(flags, Flags.c_str());
flags_len = Flags.size();
for (index = 0; index < flags_len; index++) {
if (flags[index] == ';')
flags[index] = '\0';
}
index = 0;
while (index < flags_len) {
while (index < flags_len && flags[index] == '\0')
index++;
if (index >= flags_len)
continue;
ptr = flags + index;
if (strcmp(ptr, "removable") == 0) {
Removable = true;
} else if (strcmp(ptr, "storage") == 0) {
Is_Storage = true;
} else if (strcmp(ptr, "canbewiped") == 0) {
Can_Be_Wiped = true;
} else if (strcmp(ptr, "wipeingui") == 0) {
Can_Be_Wiped = true;
Wipe_Available_in_GUI = true;
} else if (strcmp(ptr, "wipeduringfactoryreset") == 0) {
Can_Be_Wiped = true;
Wipe_Available_in_GUI = true;
Wipe_During_Factory_Reset = true;
} else if (strlen(ptr) > 15 && strncmp(ptr, "subpartitionof=", 15) == 0) {
ptr += 13;
Is_SubPartition = true;
SubPartition_Of = ptr;
} else if (strlen(ptr) > 8 && strncmp(ptr, "symlink=", 8) == 0) {
ptr += 8;
Symlink_Path = ptr;
} else if (strlen(ptr) > 8 && strncmp(ptr, "display=", 8) == 0) {
ptr += 8;
Display_Name = ptr;
} else if (strlen(ptr) > 10 && strncmp(ptr, "blocksize=", 10) == 0) {
ptr += 10;
Format_Block_Size = atoi(ptr);
} else if (strlen(ptr) > 7 && strncmp(ptr, "length=", 7) == 0) {
ptr += 7;
Length = atoi(ptr);
} else {
if (Display_Error)
LOGE("Unhandled flag: '%s'\n", ptr);
else
LOGI("Unhandled flag: '%s'\n", ptr);
}
while (index < flags_len && flags[index] != '\0')
index++;
}
return true;
}
bool TWPartition::Is_File_System(string File_System) {
if (File_System == "ext2" ||
File_System == "ext3" ||
File_System == "ext4" ||
File_System == "vfat" ||
File_System == "ntfs" ||
File_System == "yaffs2" ||
File_System == "exfat" ||
File_System == "auto")
return true;
else
return false;
}
bool TWPartition::Is_Image(string File_System) {
if (File_System == "emmc" || File_System == "mtd" || File_System == "bml")
return true;
else
return false;
}
bool TWPartition::Make_Dir(string Path, bool Display_Error) {
if (!TWFunc::Path_Exists(Path)) {
if (mkdir(Path.c_str(), 0777) == -1) {
if (Display_Error)
LOGE("Can not create '%s' folder.\n", Path.c_str());
else
LOGI("Can not create '%s' folder.\n", Path.c_str());
return false;
} else {
LOGI("Created '%s' folder.\n", Path.c_str());
return true;
}
}
return true;
}
void TWPartition::Setup_File_System(bool Display_Error) {
struct statfs st;
Can_Be_Mounted = true;
Can_Be_Wiped = true;
// Make the mount point folder if it doesn't exist
Make_Dir(Mount_Point, Display_Error);
Display_Name = Mount_Point.substr(1, Mount_Point.size() - 1);
Backup_Name = Display_Name;
Backup_Method = FILES;
}
void TWPartition::Setup_Image(bool Display_Error) {
Display_Name = Mount_Point.substr(1, Mount_Point.size() - 1);
Backup_Name = Display_Name;
if (Fstab_File_System == "emmc")
Backup_Method = DD;
else if (Fstab_File_System == "mtd" || Fstab_File_System == "bml")
Backup_Method = FLASH_UTILS;
else
LOGI("Unhandled file system '%s' on image '%s'\n", Fstab_File_System.c_str(), Display_Name.c_str());
if (Find_Partition_Size()) {
Used = Size;
Backup_Size = Size;
} else {
if (Display_Error)
LOGE("Unable to find parition size for '%s'\n", Mount_Point.c_str());
else
LOGI("Unable to find parition size for '%s'\n", Mount_Point.c_str());
}
}
void TWPartition::Setup_AndSec(void) {
Backup_Name = "and-sec";
Has_Android_Secure = true;
Symlink_Path = Mount_Point + "/.android_secure";
Symlink_Mount_Point = "/and-sec";
Backup_Path = Symlink_Mount_Point;
Make_Dir("/and-sec", true);
Recreate_AndSec_Folder();
}
void TWPartition::Find_Real_Block_Device(string& Block, bool Display_Error) {
char device[512], realDevice[512];
strcpy(device, Block.c_str());
memset(realDevice, 0, sizeof(realDevice));
while (readlink(device, realDevice, sizeof(realDevice)) > 0)
{
strcpy(device, realDevice);
memset(realDevice, 0, sizeof(realDevice));
}
if (device[0] != '/') {
if (Display_Error)
LOGE("Invalid symlink path '%s' found on block device '%s'\n", device, Block.c_str());
else
LOGI("Invalid symlink path '%s' found on block device '%s'\n", device, Block.c_str());
return;
} else {
Block = device;
return;
}
}
void TWPartition::Mount_Storage_Retry(void) {
// On some devices, storage doesn't want to mount right away, retry and sleep
if (!Mount(false)) {
int retry_count = 5;
while (retry_count > 0 && !Mount(false)) {
usleep(500000);
retry_count--;
}
Mount(true);
}
}
bool TWPartition::Find_MTD_Block_Device(string MTD_Name) {
FILE *fp = NULL;
char line[255];
fp = fopen("/proc/mtd", "rt");
if (fp == NULL) {
LOGE("Device does not support /proc/mtd\n");
return false;
}
while (fgets(line, sizeof(line), fp) != NULL)
{
char device[32], label[32];
unsigned long size = 0;
char* fstype = NULL;
int deviceId;
sscanf(line, "%s %lx %*s %*c%s", device, &size, label);
// Skip header and blank lines
if ((strcmp(device, "dev:") == 0) || (strlen(line) < 8))
continue;
// Strip off the trailing " from the label
label[strlen(label)-1] = '\0';
if (strcmp(label, MTD_Name.c_str()) == 0) {
// We found our device
// Strip off the trailing : from the device
device[strlen(device)-1] = '\0';
if (sscanf(device,"mtd%d", &deviceId) == 1) {
sprintf(device, "/dev/block/mtdblock%d", deviceId);
Primary_Block_Device = device;
}
}
}
fclose(fp);
return false;
}
bool TWPartition::Get_Size_Via_statfs(bool Display_Error) {
struct statfs st;
string Local_Path = Mount_Point + "/.";
if (!Mount(Display_Error))
return false;
if (statfs(Local_Path.c_str(), &st) != 0) {
if (!Removable) {
if (Display_Error)
LOGE("Unable to statfs '%s'\n", Local_Path.c_str());
else
LOGI("Unable to statfs '%s'\n", Local_Path.c_str());
}
return false;
}
Size = (st.f_blocks * st.f_bsize);
Used = ((st.f_blocks - st.f_bfree) * st.f_bsize);
Free = (st.f_bfree * st.f_bsize);
Backup_Size = Used;
return true;
}
bool TWPartition::Get_Size_Via_df(bool Display_Error) {
FILE* fp;
char command[255], line[512];
int include_block = 1;
unsigned int min_len;
if (!Mount(Display_Error))
return false;
min_len = Actual_Block_Device.size() + 2;
sprintf(command, "df %s > /tmp/dfoutput.txt", Mount_Point.c_str());
system(command);
fp = fopen("/tmp/dfoutput.txt", "rt");
if (fp == NULL) {
LOGI("Unable to open /tmp/dfoutput.txt.\n");
return false;
}
while (fgets(line, sizeof(line), fp) != NULL)
{
unsigned long blocks, used, available;
char device[64];
char tmpString[64];
if (strncmp(line, "Filesystem", 10) == 0)
continue;
if (strlen(line) < min_len) {
include_block = 0;
continue;
}
if (include_block) {
sscanf(line, "%s %lu %lu %lu", device, &blocks, &used, &available);
} else {
// The device block string is so long that the df information is on the next line
int space_count = 0;
sprintf(tmpString, "/dev/block/%s", Actual_Block_Device.c_str());
while (tmpString[space_count] == 32)
space_count++;
sscanf(line + space_count, "%lu %lu %lu", &blocks, &used, &available);
}
// Adjust block size to byte size
Size = blocks * 1024ULL;
Used = used * 1024ULL;
Free = available * 1024ULL;
Backup_Size = Used;
}
fclose(fp);
return true;
}
bool TWPartition::Find_Partition_Size(void) {
FILE* fp;
char line[512];
string tmpdevice;
// In this case, we'll first get the partitions we care about (with labels)
fp = fopen("/proc/partitions", "rt");
if (fp == NULL)
return false;
while (fgets(line, sizeof(line), fp) != NULL)
{
unsigned long major, minor, blocks;
char device[512];
char tmpString[64];
if (strlen(line) < 7 || line[0] == 'm') continue;
sscanf(line + 1, "%lu %lu %lu %s", &major, &minor, &blocks, device);
tmpdevice = "/dev/block/";
tmpdevice += device;
if (tmpdevice == Primary_Block_Device || tmpdevice == Alternate_Block_Device) {
// Adjust block size to byte size
Size = blocks * 1024ULL;
fclose(fp);
return true;
}
}
fclose(fp);
return false;
}
bool TWPartition::Is_Mounted(void) {
if (!Can_Be_Mounted)
return false;
struct stat st1, st2;
string test_path;
// Check to see if the mount point directory exists
test_path = Mount_Point + "/.";
if (stat(test_path.c_str(), &st1) != 0) return false;
// Check to see if the directory above the mount point exists
test_path = Mount_Point + "/../.";
if (stat(test_path.c_str(), &st2) != 0) return false;
// Compare the device IDs -- if they match then we're (probably) using tmpfs instead of an actual device
int ret = (st1.st_dev != st2.st_dev) ? true : false;
return ret;
}
bool TWPartition::Mount(bool Display_Error) {
if (Is_Mounted()) {
return true;
} else if (!Can_Be_Mounted) {
return false;
}
Find_Actual_Block_Device();
// Check the current file system before mounting
Check_FS_Type();
if (Current_File_System == "vfat")
{
string Command;
Command = "mount -t vfat -o shortname=mixed,utf8 " + Actual_Block_Device + " " + Mount_Point;
system(Command.c_str());
if (!Symlink_Mount_Point.empty())
{
Command = "mount " + Symlink_Path + " " + Symlink_Mount_Point;
system(Command.c_str());
}
} else {
if (mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), Current_File_System.c_str(), 0, NULL) != 0) {
if (Display_Error)
LOGE("Unable to mount '%s'\n", Mount_Point.c_str());
else
LOGI("Unable to mount '%s'\n", Mount_Point.c_str());
LOGI("Actual block device: '%s', current file system: '%s'\n", Actual_Block_Device.c_str(), Current_File_System.c_str());
return false;
} else {
if (Removable)
Update_Size(Display_Error);
if (!Symlink_Mount_Point.empty()) {
string Command;
Command = "mount " + Symlink_Path + " " + Symlink_Mount_Point;
system(Command.c_str());
}
return true;
}
}
return true;
}
bool TWPartition::UnMount(bool Display_Error) {
if (Is_Mounted()) {
int never_unmount_system;
DataManager::GetValue(TW_DONT_UNMOUNT_SYSTEM, never_unmount_system);
if (never_unmount_system == 1 && Mount_Point == "/system")
return true; // Never unmount system if you're not supposed to unmount it
if (!Symlink_Mount_Point.empty())
umount(Symlink_Mount_Point.c_str());
if (umount(Mount_Point.c_str()) != 0) {
if (Display_Error)
LOGE("Unable to unmount '%s'\n", Mount_Point.c_str());
else
LOGI("Unable to unmount '%s'\n", Mount_Point.c_str());
return false;
} else
return true;
} else {
return true;
}
}
bool TWPartition::Wipe() {
if (!Can_Be_Wiped) {
LOGE("Partition '%s' cannot be wiped.\n", Mount_Point.c_str());
return false;
}
if (Mount_Point == "/cache")
tmplog_offset = 0;
if (Has_Data_Media)
return Wipe_Data_Without_Wiping_Media();
int check;
DataManager::GetValue(TW_RM_RF_VAR, check);
if (check)
return Wipe_RMRF();
if (Current_File_System == "ext4")
return Wipe_EXT4();
if (Current_File_System == "ext2" || Current_File_System == "ext3")
return Wipe_EXT23();
if (Current_File_System == "vfat")
return Wipe_FAT();
if (Current_File_System == "yaffs2")
return Wipe_MTD();
LOGE("Unable to wipe '%s' -- unknown file system '%s'\n", Mount_Point.c_str(), Current_File_System.c_str());
return false;
}
bool TWPartition::Wipe_AndSec(void) {
if (!Has_Android_Secure)
return false;
char cmd[512];
if (!Mount(true))
return false;
ui_print("Using rm -rf on .android_secure\n");
sprintf(cmd, "rm -rf %s/.android_secure/* && rm -rf %s/.android_secure/.*", Mount_Point.c_str(), Mount_Point.c_str());
LOGI("rm -rf command is: '%s'\n", cmd);
system(cmd);
return true;
}
bool TWPartition::Backup(string backup_folder) {
if (Backup_Method == FILES)
return Backup_Tar(backup_folder);
else if (Backup_Method == DD)
return Backup_DD(backup_folder);
else if (Backup_Method == FLASH_UTILS)
return Backup_Dump_Image(backup_folder);
LOGE("Unknown backup method for '%s'\n", Mount_Point.c_str());
return false;
}
bool TWPartition::Check_MD5(string restore_folder) {
string Full_Filename;
char split_filename[512];
int index = 0;
Full_Filename = restore_folder + "/" + Backup_FileName;
if (!TWFunc::Path_Exists(Full_Filename)) {
// This is a split archive, we presume
sprintf(split_filename, "%s%03i", Full_Filename.c_str(), index);
while (index < 1000 && TWFunc::Path_Exists(split_filename)) {
if (TWFunc::Check_MD5(split_filename) == 0) {
LOGE("MD5 failed to match on '%s'.\n", split_filename);
return false;
}
index++;
sprintf(split_filename, "%s%03i", Full_Filename.c_str(), index);
}
return true;
} else {
// Single file archive
if (TWFunc::Check_MD5(Full_Filename) == 0) {
LOGE("MD5 failed to match on '%s'.\n", split_filename);
return false;
} else
return true;
}
return false;
}
bool TWPartition::Restore(string restore_folder) {
if (Backup_Method == FILES)
return Restore_Tar(restore_folder);
else if (Backup_Method == DD)
return Restore_DD(restore_folder);
else if (Backup_Method == FLASH_UTILS)
return Restore_Flash_Image(restore_folder);
LOGE("Unknown restore method for '%s'\n", Mount_Point.c_str());
return false;
}
string TWPartition::Backup_Method_By_Name() {
if (Backup_Method == NONE)
return "none";
else if (Backup_Method == FILES)
return "files";
else if (Backup_Method == DD)
return "dd";
else if (Backup_Method == FLASH_UTILS)
return "flash_utils";
else
return "undefined";
return "ERROR!";
}
bool TWPartition::Decrypt(string Password) {
LOGI("STUB TWPartition::Decrypt, password: '%s'\n", Password.c_str());
// Is this needed?
return 1;
}
bool TWPartition::Wipe_Encryption() {
bool Save_Data_Media = Has_Data_Media;
if (!UnMount(true))
return false;
Current_File_System = Fstab_File_System;
Is_Encrypted = false;
Is_Decrypted = false;
Decrypted_Block_Device = "";
Has_Data_Media = false;
if (Wipe()) {
Has_Data_Media = Save_Data_Media;
if (Has_Data_Media && !Symlink_Mount_Point.empty()) {
Recreate_Media_Folder();
}
ui_print("You may need to reboot recovery to be able to use /data again.\n");
return true;
} else {
Has_Data_Media = Save_Data_Media;
LOGE("Unable to format to remove encryption.\n");
return false;
}
return false;
}
void TWPartition::Check_FS_Type() {
FILE *fp;
string blkCommand;
char blkOutput[255];
char* blk;
char* arg;
char* ptr;
if (Fstab_File_System == "yaffs2" || Fstab_File_System == "mtd" || Fstab_File_System == "bml")
return; // Running blkid on some mtd devices causes a massive crash
Find_Actual_Block_Device();
if (!Is_Present)
return;
if (TWFunc::Path_Exists("/tmp/blkidoutput.txt"))
system("rm /tmp/blkidoutput.txt");
blkCommand = "blkid " + Actual_Block_Device + " > /tmp/blkidoutput.txt";
system(blkCommand.c_str());
fp = fopen("/tmp/blkidoutput.txt", "rt");
if (fp == NULL)
return;
while (fgets(blkOutput, sizeof(blkOutput), fp) != NULL)
{
blk = blkOutput;
ptr = blkOutput;
while (*ptr > 32 && *ptr != ':') ptr++;
if (*ptr == 0) continue;
*ptr = 0;
// Increment by two, but verify that we don't hit a NULL
ptr++;
if (*ptr != 0) ptr++;
// Now, find the TYPE field
while (1)
{
arg = ptr;
while (*ptr > 32) ptr++;
if (*ptr != 0)
{
*ptr = 0;
ptr++;
}
if (strlen(arg) > 6)
{
if (memcmp(arg, "TYPE=\"", 6) == 0) break;
}
if (*ptr == 0)
{
arg = NULL;
break;
}
}
if (arg && strlen(arg) > 7)
{
arg += 6; // Skip the TYPE=" portion
arg[strlen(arg)-1] = '\0'; // Drop the tail quote
}
else
continue;
if (strcmp(Current_File_System.c_str(), arg) != 0) {
LOGI("'%s' was '%s' now set to '%s'\n", Mount_Point.c_str(), Current_File_System.c_str(), arg);
Current_File_System = arg;
}
}
fclose(fp);
return;
}
bool TWPartition::Wipe_EXT23() {
if (!UnMount(true))
return false;
if (TWFunc::Path_Exists("/sbin/mke2fs")) {
char command[512];
ui_print("Formatting %s using mke2fs...\n", Display_Name.c_str());
Find_Actual_Block_Device();
sprintf(command, "mke2fs -t %s -m 0 %s", Current_File_System.c_str(), Actual_Block_Device.c_str());
LOGI("mke2fs command: %s\n", command);
if (system(command) == 0) {
Recreate_AndSec_Folder();
ui_print("Done.\n");
return true;
} else {
LOGE("Unable to wipe '%s'.\n", Mount_Point.c_str());
return false;
}
} else
return Wipe_RMRF();
return false;
}
bool TWPartition::Wipe_EXT4() {
if (!UnMount(true))
return false;
if (TWFunc::Path_Exists("/sbin/make_ext4fs")) {
string Command;
ui_print("Formatting %s using make_ext4fs...\n", Display_Name.c_str());
Find_Actual_Block_Device();
Command = "make_ext4fs";
if (!Is_Decrypted && Length != 0) {
// Only use length if we're not decrypted
char len[32];
sprintf(len, "%i", Length);
Command += " -l ";
Command += len;
}
Command += " " + Actual_Block_Device;
LOGI("make_ext4fs command: %s\n", Command.c_str());
if (system(Command.c_str()) == 0) {
Recreate_AndSec_Folder();
ui_print("Done.\n");
return true;
} else {
LOGE("Unable to wipe '%s'.\n", Mount_Point.c_str());
return false;
}
} else
return Wipe_EXT23();
return false;
}
bool TWPartition::Wipe_FAT() {
char command[512];
if (TWFunc::Path_Exists("/sbin/mkdosfs")) {
if (!UnMount(true))
return false;
ui_print("Formatting %s using mkdosfs...\n", Display_Name.c_str());