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/*
Copyright 2013 to 2016 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.h>
#include <sys/stat.h>
#include <sys/vfs.h>
#include <sys/mount.h>
#include <unistd.h>
#include <dirent.h>
#include <libgen.h>
#include <zlib.h>
#include <iostream>
#include <sstream>
#include <sys/param.h>
#include <fcntl.h>
#ifdef TW_INCLUDE_CRYPTO
#include "cutils/properties.h"
#endif
#include "libblkid/include/blkid.h"
#include "variables.h"
#include "twcommon.h"
#include "partitions.hpp"
#include "data.hpp"
#include "twrp-functions.hpp"
#include "twrpDigest.hpp"
#include "twrpTar.hpp"
#include "exclude.hpp"
#include "infomanager.hpp"
#include "set_metadata.h"
#include "gui/gui.hpp"
#include "adbbu/libtwadbbu.hpp"
extern "C" {
#include "mtdutils/mtdutils.h"
#include "mtdutils/mounts.h"
#ifdef USE_EXT4
#include "make_ext4fs.h"
#endif
#ifdef TW_INCLUDE_CRYPTO
#include "crypto/lollipop/cryptfs.h"
#include "gpt/gpt.h"
#ifdef TW_INCLUDE_FBE
#include "crypto/ext4crypt/Decrypt.h"
#endif
#else
#define CRYPT_FOOTER_OFFSET 0x4000
#endif
}
#include <selinux/selinux.h>
#include <selinux/label.h>
#ifdef HAVE_CAPABILITIES
#include <sys/capability.h>
#include <sys/xattr.h>
#include <linux/xattr.h>
#endif
#include <sparse_format.h>
#include "progresstracking.hpp"
using namespace std;
extern struct selabel_handle *selinux_handle;
extern bool datamedia;
struct flag_list {
const char *name;
unsigned flag;
};
const struct flag_list mount_flags[] = {
{ "noatime", MS_NOATIME },
{ "noexec", MS_NOEXEC },
{ "nosuid", MS_NOSUID },
{ "nodev", MS_NODEV },
{ "nodiratime", MS_NODIRATIME },
{ "ro", MS_RDONLY },
{ "rw", 0 },
{ "remount", MS_REMOUNT },
{ "bind", MS_BIND },
{ "rec", MS_REC },
#ifdef MS_UNBINDABLE
{ "unbindable", MS_UNBINDABLE },
#endif
#ifdef MS_PRIVATE
{ "private", MS_PRIVATE },
#endif
#ifdef MS_SLAVE
{ "slave", MS_SLAVE },
#endif
#ifdef MS_SHARED
{ "shared", MS_SHARED },
#endif
{ "sync", MS_SYNCHRONOUS },
{ "defaults", 0 },
{ 0, 0 },
};
enum TW_FSTAB_FLAGS {
TWFLAG_DEFAULTS, // Retain position
TWFLAG_ANDSEC,
TWFLAG_BACKUP,
TWFLAG_BACKUPNAME,
TWFLAG_BLOCKSIZE,
TWFLAG_CANBEWIPED,
TWFLAG_CANENCRYPTBACKUP,
TWFLAG_DISPLAY,
TWFLAG_ENCRYPTABLE,
TWFLAG_FLASHIMG,
TWFLAG_FORCEENCRYPT,
TWFLAG_FSFLAGS,
TWFLAG_IGNOREBLKID,
TWFLAG_LENGTH,
TWFLAG_MOUNTTODECRYPT,
TWFLAG_REMOVABLE,
TWFLAG_RETAINLAYOUTVERSION,
TWFLAG_SETTINGSSTORAGE,
TWFLAG_STORAGE,
TWFLAG_STORAGENAME,
TWFLAG_SUBPARTITIONOF,
TWFLAG_SYMLINK,
TWFLAG_USERDATAENCRYPTBACKUP,
TWFLAG_USERMRF,
TWFLAG_WIPEDURINGFACTORYRESET,
TWFLAG_WIPEINGUI,
TWFLAG_SLOTSELECT,
};
/* Flags without a trailing '=' are considered dual format flags and can be
* written as either 'flagname' or 'flagname=', where the character following
* the '=' is Y,y,1 for true and false otherwise.
*/
const struct flag_list tw_flags[] = {
{ "andsec", TWFLAG_ANDSEC },
{ "backup", TWFLAG_BACKUP },
{ "backupname=", TWFLAG_BACKUPNAME },
{ "blocksize=", TWFLAG_BLOCKSIZE },
{ "canbewiped", TWFLAG_CANBEWIPED },
{ "canencryptbackup", TWFLAG_CANENCRYPTBACKUP },
{ "defaults", TWFLAG_DEFAULTS },
{ "display=", TWFLAG_DISPLAY },
{ "encryptable=", TWFLAG_ENCRYPTABLE },
{ "flashimg", TWFLAG_FLASHIMG },
{ "forceencrypt=", TWFLAG_FORCEENCRYPT },
{ "fsflags=", TWFLAG_FSFLAGS },
{ "ignoreblkid", TWFLAG_IGNOREBLKID },
{ "length=", TWFLAG_LENGTH },
{ "mounttodecrypt", TWFLAG_MOUNTTODECRYPT },
{ "removable", TWFLAG_REMOVABLE },
{ "retainlayoutversion", TWFLAG_RETAINLAYOUTVERSION },
{ "settingsstorage", TWFLAG_SETTINGSSTORAGE },
{ "storage", TWFLAG_STORAGE },
{ "storagename=", TWFLAG_STORAGENAME },
{ "subpartitionof=", TWFLAG_SUBPARTITIONOF },
{ "symlink=", TWFLAG_SYMLINK },
{ "userdataencryptbackup", TWFLAG_USERDATAENCRYPTBACKUP },
{ "usermrf", TWFLAG_USERMRF },
{ "wipeduringfactoryreset", TWFLAG_WIPEDURINGFACTORYRESET },
{ "wipeingui", TWFLAG_WIPEINGUI },
{ "slotselect", TWFLAG_SLOTSELECT },
{ 0, 0 },
};
TWPartition::TWPartition() {
Can_Be_Mounted = false;
Can_Be_Wiped = false;
Can_Be_Backed_Up = false;
Use_Rm_Rf = 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;
Is_FBE = false;
Mount_To_Decrypt = false;
Decrypted_Block_Device = "";
Display_Name = "";
Backup_Display_Name = "";
Storage_Name = "";
Backup_Name = "";
Backup_FileName = "";
MTD_Name = "";
Backup_Method = BM_NONE;
Can_Encrypt_Backup = false;
Use_Userdata_Encryption = false;
Has_Data_Media = false;
Has_Android_Secure = false;
Is_Storage = false;
Is_Settings_Storage = false;
Storage_Path = "";
Current_File_System = "";
Fstab_File_System = "";
Mount_Flags = 0;
Mount_Options = "";
Format_Block_Size = 0;
Ignore_Blkid = false;
Retain_Layout_Version = false;
Crypto_Key_Location = "footer";
MTP_Storage_ID = 0;
Can_Flash_Img = false;
Mount_Read_Only = false;
Is_Adopted_Storage = false;
Adopted_GUID = "";
SlotSelect = false;
}
TWPartition::~TWPartition(void) {
// Do nothing
}
bool TWPartition::Process_Fstab_Line(const char *fstab_line, bool Display_Error) {
char full_line[MAX_FSTAB_LINE_LENGTH];
char twflags[MAX_FSTAB_LINE_LENGTH] = "";
char* ptr;
int line_len = strlen(fstab_line), index = 0, item_index = 0;
bool skip = false;
strlcpy(full_line, fstab_line, sizeof(full_line));
for (index = 0; index < line_len; index++) {
if (full_line[index] == 34)
skip = !skip;
if (!skip && full_line[index] <= 32)
full_line[index] = '\0';
}
Mount_Point = full_line;
LOGINFO("Processing '%s'\n", Mount_Point.c_str());
Backup_Path = Mount_Point;
Storage_Path = Mount_Point;
Display_Name = full_line + 1;
Backup_Display_Name = Display_Name;
Storage_Name = Display_Name;
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 != '/')
LOGERR("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)
LOGERR("Invalid block device '%s' in fstab line '%s'", ptr, fstab_line);
else
LOGINFO("Invalid block device '%s' in fstab line '%s'", ptr, fstab_line);
return false;
} 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;
strlcpy(twflags, ptr, sizeof(twflags));
} 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
LOGINFO("Unhandled fstab information '%s' in fstab line '%s'\n", ptr, fstab_line);
}
}
while (index < line_len && full_line[index] != '\0')
index++;
}
if (!Is_File_System(Fstab_File_System) && !Is_Image(Fstab_File_System)) {
if (Display_Error)
LOGERR("Unknown File System: '%s'\n", Fstab_File_System.c_str());
else
LOGINFO("Unknown File System: '%s'\n", Fstab_File_System.c_str());
return false;
} else if (Is_File_System(Fstab_File_System)) {
Find_Actual_Block_Device();
Setup_File_System(Display_Error);
if (Mount_Point == "/system") {
Display_Name = "System";
Backup_Display_Name = Display_Name;
Storage_Name = Display_Name;
Wipe_Available_in_GUI = true;
Can_Be_Backed_Up = true;
Mount_Read_Only = true;
} else if (Mount_Point == "/data") {
Display_Name = "Data";
Backup_Display_Name = Display_Name;
Storage_Name = Display_Name;
Wipe_Available_in_GUI = true;
Wipe_During_Factory_Reset = true;
Can_Be_Backed_Up = true;
Can_Encrypt_Backup = true;
Use_Userdata_Encryption = true;
} else if (Mount_Point == "/cache") {
Display_Name = "Cache";
Backup_Display_Name = Display_Name;
Storage_Name = Display_Name;
Wipe_Available_in_GUI = true;
Wipe_During_Factory_Reset = true;
Can_Be_Backed_Up = true;
} else if (Mount_Point == "/datadata") {
Wipe_During_Factory_Reset = true;
Display_Name = "DataData";
Backup_Display_Name = Display_Name;
Storage_Name = Display_Name;
Is_SubPartition = true;
SubPartition_Of = "/data";
DataManager::SetValue(TW_HAS_DATADATA, 1);
Can_Be_Backed_Up = true;
Can_Encrypt_Backup = true;
Use_Userdata_Encryption = false; // This whole partition should be encrypted
} else if (Mount_Point == "/sd-ext") {
Wipe_During_Factory_Reset = true;
Display_Name = "SD-Ext";
Backup_Display_Name = Display_Name;
Storage_Name = Display_Name;
Wipe_Available_in_GUI = true;
Removable = true;
Can_Be_Backed_Up = true;
Can_Encrypt_Backup = true;
Use_Userdata_Encryption = true;
} else if (Mount_Point == "/boot") {
Display_Name = "Boot";
Backup_Display_Name = Display_Name;
DataManager::SetValue("tw_boot_is_mountable", 1);
Can_Be_Backed_Up = true;
} else if (Mount_Point == "/vendor") {
Display_Name = "Vendor";
Backup_Display_Name = Display_Name;
Storage_Name = Display_Name;
Mount_Read_Only = true;
}
#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;
Wipe_Available_in_GUI = true;
#else
if (Mount_Point == "/sdcard" || Mount_Point == "/external_sd" || Mount_Point == "/external_sdcard") {
Is_Storage = true;
Removable = true;
Wipe_Available_in_GUI = true;
#endif
}
#ifdef TW_INTERNAL_STORAGE_PATH
if (Mount_Point == EXPAND(TW_INTERNAL_STORAGE_PATH)) {
Is_Storage = true;
Is_Settings_Storage = true;
Storage_Path = EXPAND(TW_INTERNAL_STORAGE_PATH);
Wipe_Available_in_GUI = true;
}
#else
if (Mount_Point == "/emmc" || Mount_Point == "/internal_sd" || Mount_Point == "/internal_sdcard") {
Is_Storage = true;
Is_Settings_Storage = true;
Wipe_Available_in_GUI = true;
}
#endif
} else if (Is_Image(Fstab_File_System)) {
Find_Actual_Block_Device();
Setup_Image();
if (Mount_Point == "/boot") {
Display_Name = "Boot";
Backup_Display_Name = Display_Name;
Can_Be_Backed_Up = true;
Can_Flash_Img = true;
} else if (Mount_Point == "/recovery") {
Display_Name = "Recovery";
Backup_Display_Name = Display_Name;
Can_Flash_Img = true;
} else if (Mount_Point == "/system_image") {
Display_Name = "System Image";
Backup_Display_Name = Display_Name;
Can_Flash_Img = true;
Can_Be_Backed_Up = true;
} else if (Mount_Point == "/vendor_image") {
Display_Name = "Vendor Image";
Backup_Display_Name = Display_Name;
Can_Flash_Img = true;
Can_Be_Backed_Up = true;
}
}
// Process TWRP fstab flags
if (strlen(twflags) > 0) {
string Prev_Display_Name = Display_Name;
string Prev_Storage_Name = Storage_Name;
string Prev_Backup_Display_Name = Backup_Display_Name;
Display_Name = "";
Storage_Name = "";
Backup_Display_Name = "";
Process_TW_Flags(twflags, Display_Error);
bool has_display_name = !Display_Name.empty();
bool has_storage_name = !Storage_Name.empty();
bool has_backup_name = !Backup_Display_Name.empty();
if (!has_display_name) Display_Name = Prev_Display_Name;
if (!has_storage_name) Storage_Name = Prev_Storage_Name;
if (!has_backup_name) Backup_Display_Name = Prev_Backup_Display_Name;
if (has_display_name && !has_storage_name)
Storage_Name = Display_Name;
if (!has_display_name && has_storage_name)
Display_Name = Storage_Name;
if (has_display_name && !has_backup_name && Backup_Display_Name != "Android Secure")
Backup_Display_Name = Display_Name;
if (!has_display_name && has_backup_name)
Display_Name = Backup_Display_Name;
}
return true;
}
void TWPartition::Partition_Post_Processing(bool Display_Error) {
if (Mount_Point == "/data")
Setup_Data_Partition(Display_Error);
else if (Mount_Point == "/cache")
Setup_Cache_Partition(Display_Error);
}
void TWPartition::ExcludeAll(const string& path) {
backup_exclusions.add_absolute_dir(path);
wipe_exclusions.add_absolute_dir(path);
}
void TWPartition::Setup_Data_Partition(bool Display_Error) {
if (Mount_Point != "/data")
return;
// Ensure /data is not mounted as tmpfs for qcom hardware decrypt
UnMount(false);
#ifdef TW_INCLUDE_CRYPTO
if (datamedia)
Setup_Data_Media();
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_IS_DECRYPTED, 1);
Is_Encrypted = true;
Is_Decrypted = true;
Is_FBE = false;
DataManager::SetValue(TW_IS_FBE, 0);
Decrypted_Block_Device = crypto_blkdev;
LOGINFO("Data already decrypted, new block device: '%s'\n", crypto_blkdev);
} else if (!Mount(false)) {
if (Is_Present) {
set_partition_data(Actual_Block_Device.c_str(), Crypto_Key_Location.c_str(), Fstab_File_System.c_str());
if (cryptfs_check_footer() == 0) {
Is_Encrypted = true;
Is_Decrypted = false;
Can_Be_Mounted = false;
Current_File_System = "emmc";
Setup_Image();
DataManager::SetValue(TW_IS_ENCRYPTED, 1);
DataManager::SetValue(TW_CRYPTO_PWTYPE, cryptfs_get_password_type());
DataManager::SetValue(TW_CRYPTO_PASSWORD, "");
DataManager::SetValue("tw_crypto_display", "");
} else {
gui_err("mount_data_footer=Could not mount /data and unable to find crypto footer.");
}
} else {
LOGERR("Primary block device '%s' for mount point '%s' is not present!\n", Primary_Block_Device.c_str(), Mount_Point.c_str());
}
} else {
if (TWFunc::Path_Exists("/data/unencrypted/key/version")) {
LOGINFO("File Based Encryption is present\n");
#ifdef TW_INCLUDE_FBE
ExcludeAll(Mount_Point + "/convert_fbe");
ExcludeAll(Mount_Point + "/unencrypted");
//ExcludeAll(Mount_Point + "/system/users/0"); // we WILL need to retain some of this if multiple users are present or we just need to delete more folders for the extra users somewhere else
ExcludeAll(Mount_Point + "/misc/vold/user_keys");
//ExcludeAll(Mount_Point + "/system_ce");
//ExcludeAll(Mount_Point + "/system_de");
//ExcludeAll(Mount_Point + "/misc_ce");
//ExcludeAll(Mount_Point + "/misc_de");
ExcludeAll(Mount_Point + "/system/gatekeeper.password.key");
ExcludeAll(Mount_Point + "/system/gatekeeper.pattern.key");
ExcludeAll(Mount_Point + "/system/locksettings.db");
//ExcludeAll(Mount_Point + "/system/locksettings.db-shm"); // don't seem to need this one, but the other 2 are needed
ExcludeAll(Mount_Point + "/system/locksettings.db-wal");
//ExcludeAll(Mount_Point + "/user_de");
//ExcludeAll(Mount_Point + "/misc/profiles/cur/0"); // might be important later
ExcludeAll(Mount_Point + "/misc/gatekeeper");
ExcludeAll(Mount_Point + "/drm/kek.dat");
int retry_count = 3;
while (!Decrypt_DE() && --retry_count)
usleep(2000);
if (retry_count > 0) {
property_set("ro.crypto.state", "encrypted");
Is_Encrypted = true;
Is_Decrypted = false;
Is_FBE = true;
DataManager::SetValue(TW_IS_FBE, 1);
DataManager::SetValue(TW_IS_ENCRYPTED, 1);
string filename;
DataManager::SetValue(TW_CRYPTO_PWTYPE, Get_Password_Type(0, filename));
DataManager::SetValue(TW_CRYPTO_PASSWORD, "");
DataManager::SetValue("tw_crypto_display", "");
}
#else
LOGERR("FBE found but FBE support not present in TWRP\n");
#endif
} else {
// Filesystem is not encrypted and the mount succeeded, so return to
// the original unmounted state
UnMount(false);
}
}
if (datamedia && (!Is_Encrypted || (Is_Encrypted && Is_Decrypted))) {
Setup_Data_Media();
Recreate_Media_Folder();
}
#else
if (datamedia) {
Setup_Data_Media();
Recreate_Media_Folder();
}
#endif
}
void TWPartition::Setup_Cache_Partition(bool Display_Error __unused) {
if (Mount_Point != "/cache")
return;
if (!Mount(true))
return;
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)
LOGERR("Could not create /cache/recovery\n");
}
}
void TWPartition::Process_FS_Flags(const char *str) {
char *options = strdup(str);
char *ptr, *savep;
Mount_Options = "";
// Avoid issues with potentially nested strtok by using strtok_r
ptr = strtok_r(options, ",", &savep);
while (ptr) {
const struct flag_list* mount_flag = mount_flags;
for (; mount_flag->name; mount_flag++) {
// mount_flags are never postfixed by '=',
// so only match identical strings (including length)
if (strcmp(ptr, mount_flag->name) == 0) {
Mount_Flags |= mount_flag->flag;
break;
}
}
if (mount_flag->flag == MS_RDONLY)
Mount_Read_Only = true;
if (mount_flag->name != 0) {
if (!Mount_Options.empty())
Mount_Options += ",";
Mount_Options += mount_flag->name;
} else {
LOGINFO("Unhandled mount flag: '%s'\n", ptr);
}
ptr = strtok_r(NULL, ",", &savep);
}
free(options);
}
void TWPartition::Apply_TW_Flag(const unsigned flag, const char* str, const bool val) {
switch (flag) {
case TWFLAG_ANDSEC:
Has_Android_Secure = val;
break;
case TWFLAG_BACKUP:
Can_Be_Backed_Up = val;
break;
case TWFLAG_BACKUPNAME:
Backup_Display_Name = str;
break;
case TWFLAG_BLOCKSIZE:
Format_Block_Size = (unsigned long)(atol(str));
break;
case TWFLAG_CANBEWIPED:
Can_Be_Wiped = val;
break;
case TWFLAG_CANENCRYPTBACKUP:
Can_Encrypt_Backup = val;
break;
case TWFLAG_DEFAULTS:
// Do nothing
break;
case TWFLAG_DISPLAY:
Display_Name = str;
break;
case TWFLAG_ENCRYPTABLE:
case TWFLAG_FORCEENCRYPT:
Crypto_Key_Location = str;
break;
case TWFLAG_FLASHIMG:
Can_Flash_Img = val;
break;
case TWFLAG_FSFLAGS:
Process_FS_Flags(str);
break;
case TWFLAG_IGNOREBLKID:
Ignore_Blkid = val;
break;
case TWFLAG_LENGTH:
Length = atoi(str);
break;
case TWFLAG_MOUNTTODECRYPT:
Mount_To_Decrypt = val;
break;
case TWFLAG_REMOVABLE:
Removable = val;
break;
case TWFLAG_RETAINLAYOUTVERSION:
Retain_Layout_Version = val;
break;
case TWFLAG_SETTINGSSTORAGE:
Is_Settings_Storage = val;
if (Is_Settings_Storage)
Is_Storage = true;
break;
case TWFLAG_STORAGE:
Is_Storage = val;
break;
case TWFLAG_STORAGENAME:
Storage_Name = str;
break;
case TWFLAG_SUBPARTITIONOF:
Is_SubPartition = true;
SubPartition_Of = str;
break;
case TWFLAG_SYMLINK:
Symlink_Path = str;
break;
case TWFLAG_USERDATAENCRYPTBACKUP:
Use_Userdata_Encryption = val;
if (Use_Userdata_Encryption)
Can_Encrypt_Backup = true;
break;
case TWFLAG_USERMRF:
Use_Rm_Rf = val;
break;
case TWFLAG_WIPEDURINGFACTORYRESET:
Wipe_During_Factory_Reset = val;
if (Wipe_During_Factory_Reset) {
Can_Be_Wiped = true;
Wipe_Available_in_GUI = true;
}
break;
case TWFLAG_WIPEINGUI:
Wipe_Available_in_GUI = val;
if (Wipe_Available_in_GUI)
Can_Be_Wiped = true;
break;
case TWFLAG_SLOTSELECT:
SlotSelect = true;
break;
default:
// Should not get here
LOGINFO("Flag identified for processing, but later unmatched: %i\n", flag);
break;
}
}
void TWPartition::Process_TW_Flags(char *flags, bool Display_Error) {
char separator[2] = {'\n', 0};
char *ptr, *savep;
// Semicolons within double-quotes are not forbidden, so replace
// only the semicolons intended as separators with '\n' for strtok
for (unsigned i = 0, skip = 0; i < strlen(flags); i++) {
if (flags[i] == '\"')
skip = !skip;
if (!skip && flags[i] == ';')
flags[i] = separator[0];
}
// Avoid issues with potentially nested strtok by using strtok_r
ptr = strtok_r(flags, separator, &savep);
while (ptr) {
int ptr_len = strlen(ptr);
const struct flag_list* tw_flag = tw_flags;
for (; tw_flag->name; tw_flag++) {
int flag_len = strlen(tw_flag->name);
if (strncmp(ptr, tw_flag->name, flag_len) == 0) {
bool flag_val = false;
if (ptr_len > flag_len && (tw_flag->name)[flag_len-1] != '='
&& ptr[flag_len] != '=') {
// Handle flags with same starting string
// (e.g. backup and backupname)
continue;
} else if (ptr_len > flag_len && ptr[flag_len] == '=') {
// Handle flags with dual format: Part 1
// (e.g. backup and backup=y. backup=y handled here)
ptr += flag_len + 1;
TWFunc::Strip_Quotes(ptr);
// Skip flags with empty argument
// (e.g. backup=)
if (strlen(ptr) == 0) {
LOGINFO("Flag missing argument or should not include '=': %s=\n", tw_flag->name);
break;
}
flag_val = strchr("yY1", *ptr) != NULL;
} else if (ptr_len == flag_len
&& (tw_flag->name)[flag_len-1] == '=') {
// Skip flags missing argument after =
// (e.g. backupname=)
LOGINFO("Flag missing argument: %s\n", tw_flag->name);
break;
} else if (ptr_len > flag_len
&& (tw_flag->name)[flag_len-1] == '=') {
// Handle arguments to flags
// (e.g. backupname="My Stuff")
ptr += flag_len;
TWFunc::Strip_Quotes(ptr);
// Skip flags with empty argument
// (e.g. backupname="")
if (strlen(ptr) == 0) {
LOGINFO("Flag missing argument: %s\n", tw_flag->name);
break;
}
} else if (ptr_len == flag_len) {
// Handle flags with dual format: Part 2
// (e.g. backup and backup=y. backup handled here)
flag_val = true;
} else {
LOGINFO("Flag matched, but could not be processed: %s\n", ptr);
break;
}
Apply_TW_Flag(tw_flag->flag, ptr, flag_val);
break;
}
}
if (tw_flag->name == 0) {
if (Display_Error)
LOGERR("Unhandled flag: '%s'\n", ptr);
else
LOGINFO("Unhandled flag: '%s'\n", ptr);
}
ptr = strtok_r(NULL, separator, &savep);
}
}
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 == "f2fs" ||
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::Get_D_Type_From_Stat(Path) != S_IFDIR)
unlink(Path.c_str());
if (!TWFunc::Path_Exists(Path)) {
if (mkdir(Path.c_str(), 0777) == -1) {
if (Display_Error)
gui_msg(Msg(msg::kError, "create_folder_strerr=Can not create '{1}' folder ({2}).")(Path)(strerror(errno)));
else
LOGINFO("Can not create '%s' folder.\n", Path.c_str());
return false;
} else {
LOGINFO("Created '%s' folder.\n", Path.c_str());
return true;
}
}
return true;
}
void TWPartition::Setup_File_System(bool Display_Error) {
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 = BM_FILES;
}
void TWPartition::Setup_Image() {
Display_Name = Mount_Point.substr(1, Mount_Point.size() - 1);
Backup_Name = Display_Name;
if (Current_File_System == "emmc")
Backup_Method = BM_DD;
else if (Current_File_System == "mtd" || Current_File_System == "bml")
Backup_Method = BM_FLASH_UTILS;
else
LOGINFO("Unhandled file system '%s' on image '%s'\n", Current_File_System.c_str(), Display_Name.c_str());
}
void TWPartition::Setup_AndSec(void) {
Backup_Display_Name = "Android Secure";
Backup_Name = "and-sec";
Can_Be_Backed_Up = true;
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();
Mount_Storage_Retry(true);
}
void TWPartition::Setup_Data_Media() {
LOGINFO("Setting up '%s' as data/media emulated storage.\n", Mount_Point.c_str());
if (Storage_Name.empty() || Storage_Name == "Data")
Storage_Name = "Internal Storage";
Has_Data_Media = true;
Is_Storage = true;
Storage_Path = Mount_Point + "/media";
Symlink_Path = Storage_Path;
if (Mount_Point == "/data") {
Is_Settings_Storage = true;
if (strcmp(EXPAND(TW_EXTERNAL_STORAGE_PATH), "/sdcard") == 0) {
Make_Dir("/emmc", false);
Symlink_Mount_Point = "/emmc";
} else {
Make_Dir("/sdcard", false);
Symlink_Mount_Point = "/sdcard";
}
if (Mount(false) && TWFunc::Path_Exists(Mount_Point + "/media/0")) {
Storage_Path = Mount_Point + "/media/0";
Symlink_Path = Storage_Path;
DataManager::SetValue(TW_INTERNAL_PATH, Mount_Point + "/media/0");
UnMount(true);
}
DataManager::SetValue("tw_has_internal", 1);
DataManager::SetValue("tw_has_data_media", 1);
backup_exclusions.add_absolute_dir("/data/data/com.google.android.music/files");
wipe_exclusions.add_absolute_dir(Mount_Point + "/misc/vold"); // adopted storage keys
ExcludeAll(Mount_Point + "/.layout_version");
ExcludeAll(Mount_Point + "/system/storage.xml");
} else {
if (Mount(true) && TWFunc::Path_Exists(Mount_Point + "/media/0")) {
Storage_Path = Mount_Point + "/media/0";
Symlink_Path = Storage_Path;
UnMount(true);
}
}
ExcludeAll(Mount_Point + "/media");
}
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)
LOGERR("Invalid symlink path '%s' found on block device '%s'\n", device, Block.c_str());
else
LOGINFO("Invalid symlink path '%s' found on block device '%s'\n", device, Block.c_str());
return;
} else {
Block = device;
return;
}
}
bool TWPartition::Mount_Storage_Retry(bool Display_Error) {
// On some devices, storage doesn't want to mount right away, retry and sleep
if (!Mount(Display_Error)) {
int retry_count = 5;
while (retry_count > 0 && !Mount(false)) {
usleep(500000);
retry_count--;
}
return Mount(Display_Error);
}
return true;
}
bool TWPartition::Find_MTD_Block_Device(string MTD_Name) {
FILE *fp = NULL;
char line[255];
fp = fopen("/proc/mtd", "rt");
if (fp == NULL) {
LOGERR("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;
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 true;
}
}
}
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)
LOGERR("Unable to statfs '%s'\n", Local_Path.c_str());
else
LOGINFO("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());
TWFunc::Exec_Cmd(command);
fp = fopen("/tmp/dfoutput.txt", "rt");
if (fp == NULL) {
LOGINFO("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;
}
unsigned long long TWPartition::IOCTL_Get_Block_Size() {
Find_Actual_Block_Device();
return TWFunc::IOCTL_Get_Block_Size(Actual_Block_Device.c_str());
}
bool TWPartition::Find_Partition_Size(void) {
FILE* fp;
char line[512];
string tmpdevice;
fp = fopen("/proc/dumchar_info", "rt");
if (fp != NULL) {
while (fgets(line, sizeof(line), fp) != NULL)
{
char label[32], device[32];
unsigned long size = 0;
sscanf(line, "%s %lx %*x %*u %s", label, &size, device);
// Skip header, annotation and blank lines
if ((strncmp(device, "/dev/", 5) != 0) || (strlen(line) < 8))
continue;
tmpdevice = "/dev/";
tmpdevice += label;
if (tmpdevice == Primary_Block_Device || tmpdevice == Alternate_Block_Device) {
Size = size;
fclose(fp);
return true;
}
}
}
unsigned long long ioctl_size = IOCTL_Get_Block_Size();
if (ioctl_size) {
Size = ioctl_size;
return true;
}
// 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];
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::Is_File_System_Writable(void) {
if (!Is_File_System(Current_File_System) || !Is_Mounted())
return false;
string test_path = Mount_Point + "/.";
return (access(test_path.c_str(), W_OK) == 0);
}
bool TWPartition::Mount(bool Display_Error) {
int exfat_mounted = 0;
unsigned long flags = Mount_Flags;
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 == "exfat" && TWFunc::Path_Exists("/sbin/exfat-fuse")) {
string cmd = "/sbin/exfat-fuse -o big_writes,max_read=131072,max_write=131072 " + Actual_Block_Device + " " + Mount_Point;
LOGINFO("cmd: %s\n", cmd.c_str());
string result;
if (TWFunc::Exec_Cmd(cmd, result) != 0) {
LOGINFO("exfat-fuse failed to mount with result '%s', trying vfat\n", result.c_str());
Current_File_System = "vfat";
} else {
#ifdef TW_NO_EXFAT_FUSE
UnMount(false);
// We'll let the kernel handle it but using exfat-fuse to detect if the file system is actually exfat
// Some kernels let us mount vfat as exfat which doesn't work out too well
#else
exfat_mounted = 1;
#endif
}
}
if (Current_File_System == "ntfs" && (TWFunc::Path_Exists("/sbin/ntfs-3g") || TWFunc::Path_Exists("/sbin/mount.ntfs"))) {
string cmd;
string Ntfsmount_Binary = "";
if (TWFunc::Path_Exists("/sbin/ntfs-3g"))
Ntfsmount_Binary = "ntfs-3g";
else if (TWFunc::Path_Exists("/sbin/mount.ntfs"))
Ntfsmount_Binary = "mount.ntfs";
if (Mount_Read_Only)
cmd = "/sbin/" + Ntfsmount_Binary + " -o ro " + Actual_Block_Device + " " + Mount_Point;
else
cmd = "/sbin/" + Ntfsmount_Binary + " " + Actual_Block_Device + " " + Mount_Point;
LOGINFO("cmd: '%s'\n", cmd.c_str());
if (TWFunc::Exec_Cmd(cmd) == 0) {
return true;
} else {
LOGINFO("ntfs-3g failed to mount, trying regular mount method.\n");
}
}
if (Mount_Read_Only)
flags |= MS_RDONLY;
if (Fstab_File_System == "yaffs2") {
// mount an MTD partition as a YAFFS2 filesystem.
flags = MS_NOATIME | MS_NODEV | MS_NODIRATIME;
if (Mount_Read_Only)
flags |= MS_RDONLY;
if (mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), Fstab_File_System.c_str(), flags, NULL) < 0) {
if (mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), Fstab_File_System.c_str(), flags | MS_RDONLY, NULL) < 0) {
if (Display_Error)
gui_msg(Msg(msg::kError, "fail_mount=Failed to mount '{1}' ({2})")(Mount_Point)(strerror(errno)));
else
LOGINFO("Failed to mount '%s' (MTD)\n", Mount_Point.c_str());
return false;
} else {
LOGINFO("Mounted '%s' (MTD) as RO\n", Mount_Point.c_str());
return true;
}
} else {
struct stat st;
string test_path = Mount_Point;
if (stat(test_path.c_str(), &st) < 0) {
if (Display_Error)
gui_msg(Msg(msg::kError, "fail_mount=Failed to mount '{1}' ({2})")(Mount_Point)(strerror(errno)));
else
LOGINFO("Failed to mount '%s' (MTD)\n", Mount_Point.c_str());
return false;
}
mode_t new_mode = st.st_mode | S_IXUSR | S_IXGRP | S_IXOTH;
if (new_mode != st.st_mode) {
LOGINFO("Fixing execute permissions for %s\n", Mount_Point.c_str());
if (chmod(Mount_Point.c_str(), new_mode) < 0) {
if (Display_Error)
LOGERR("Couldn't fix permissions for %s: %s\n", Mount_Point.c_str(), strerror(errno));
else
LOGINFO("Couldn't fix permissions for %s: %s\n", Mount_Point.c_str(), strerror(errno));
return false;
}
}
return true;
}
}
string mount_fs = Current_File_System;
if (Current_File_System == "exfat" && TWFunc::Path_Exists("/sys/module/texfat"))
mount_fs = "texfat";
if (!exfat_mounted &&
mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), mount_fs.c_str(), flags, Mount_Options.c_str()) != 0 &&
mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), mount_fs.c_str(), flags, NULL) != 0) {
#ifdef TW_NO_EXFAT_FUSE
if (Current_File_System == "exfat") {
LOGINFO("Mounting exfat failed, trying vfat...\n");
if (mount(Actual_Block_Device.c_str(), Mount_Point.c_str(), "vfat", 0, NULL) != 0) {
if (Display_Error)
gui_msg(Msg(msg::kError, "fail_mount=Failed to mount '{1}' ({2})")(Mount_Point)(strerror(errno)));
else
LOGINFO("Unable to mount '%s'\n", Mount_Point.c_str());
LOGINFO("Actual block device: '%s', current file system: '%s', flags: 0x%8x, options: '%s'\n", Actual_Block_Device.c_str(), Current_File_System.c_str(), flags, Mount_Options.c_str());
return false;
}
} else {
#endif
if (!Removable && Display_Error)
gui_msg(Msg(msg::kError, "fail_mount=Failed to mount '{1}' ({2})")(Mount_Point)(strerror(errno)));
else
LOGINFO("Unable to mount '%s'\n", Mount_Point.c_str());
LOGINFO("Actual block device: '%s', current file system: '%s'\n", Actual_Block_Device.c_str(), Current_File_System.c_str());
return false;
#ifdef TW_NO_EXFAT_FUSE
}
#endif
}
if (Removable)
Update_Size(Display_Error);
if (!Symlink_Mount_Point.empty() && TWFunc::Path_Exists(Symlink_Path)) {
string Command = "mount -o bind '" + Symlink_Path + "' '" + Symlink_Mount_Point + "'";
TWFunc::Exec_Cmd(Command);
}
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 (Is_Storage && MTP_Storage_ID > 0)
PartitionManager.Remove_MTP_Storage(MTP_Storage_ID);
if (!Symlink_Mount_Point.empty())
umount(Symlink_Mount_Point.c_str());
umount(Mount_Point.c_str());
if (Is_Mounted()) {
if (Display_Error)
gui_msg(Msg(msg::kError, "fail_unmount=Failed to unmount '{1}' ({2})")(Mount_Point)(strerror(errno)));
else
LOGINFO("Unable to unmount '%s'\n", Mount_Point.c_str());
return false;
} else {
return true;
}
} else {
return true;
}
}
bool TWPartition::ReMount(bool Display_Error) {
if (UnMount(Display_Error))
return Mount(Display_Error);
return false;
}
bool TWPartition::ReMount_RW(bool Display_Error) {
// No need to remount if already mounted rw
if (Is_File_System_Writable())
return true;
bool ro = Mount_Read_Only;
int flags = Mount_Flags;
Mount_Read_Only = false;
Mount_Flags &= ~MS_RDONLY;
bool ret = ReMount(Display_Error);
Mount_Read_Only = ro;
Mount_Flags = flags;
return ret;
}
bool TWPartition::Wipe(string New_File_System) {
bool wiped = false, update_crypt = false, recreate_media = true;
int check;
string Layout_Filename = Mount_Point + "/.layout_version";
if (!Can_Be_Wiped) {
gui_msg(Msg(msg::kError, "cannot_wipe=Partition {1} cannot be wiped.")(Display_Name));
return false;
}
if (Mount_Point == "/cache")
Log_Offset = 0;
if (Retain_Layout_Version && Mount(false) && TWFunc::Path_Exists(Layout_Filename))
TWFunc::copy_file(Layout_Filename, "/.layout_version", 0600);
else
unlink("/.layout_version");
if (Has_Data_Media && Current_File_System == New_File_System) {
wiped = Wipe_Data_Without_Wiping_Media();
recreate_media = false;
} else {
DataManager::GetValue(TW_RM_RF_VAR, check);
if (check || Use_Rm_Rf)
wiped = Wipe_RMRF();
else if (New_File_System == "ext4")
wiped = Wipe_EXT4();
else if (New_File_System == "ext2" || New_File_System == "ext3")
wiped = Wipe_EXT23(New_File_System);
else if (New_File_System == "vfat")
wiped = Wipe_FAT();
else if (New_File_System == "exfat")
wiped = Wipe_EXFAT();
else if (New_File_System == "yaffs2")
wiped = Wipe_MTD();
else if (New_File_System == "f2fs")
wiped = Wipe_F2FS();
else if (New_File_System == "ntfs")
wiped = Wipe_NTFS();
else {
LOGERR("Unable to wipe '%s' -- unknown file system '%s'\n", Mount_Point.c_str(), New_File_System.c_str());
unlink("/.layout_version");
return false;
}
update_crypt = wiped;
}
if (wiped) {
if (Mount_Point == "/cache")
DataManager::Output_Version();
if (TWFunc::Path_Exists("/.layout_version") && Mount(false))
TWFunc::copy_file("/.layout_version", Layout_Filename, 0600);
if (update_crypt) {
Setup_File_System(false);
if (Is_Encrypted && !Is_Decrypted) {
// just wiped an encrypted partition back to its unencrypted state
Is_Encrypted = false;
Is_Decrypted = false;
Decrypted_Block_Device = "";
if (Mount_Point == "/data") {
DataManager::SetValue(TW_IS_ENCRYPTED, 0);
DataManager::SetValue(TW_IS_DECRYPTED, 0);
}
}
}
if (Has_Data_Media && recreate_media) {
Recreate_Media_Folder();
}
if (Is_Storage && Mount(false))
PartitionManager.Add_MTP_Storage(MTP_Storage_ID);
}
return wiped;
}
bool TWPartition::Wipe() {
if (Is_File_System(Current_File_System))
return Wipe(Current_File_System);
else
return Wipe(Fstab_File_System);
}
bool TWPartition::Wipe_AndSec(void) {
if (!Has_Android_Secure)
return false;
if (!Mount(true))
return false;
gui_msg(Msg("wiping=Wiping {1}")(Backup_Display_Name));
TWFunc::removeDir(Mount_Point + "/.android_secure/", true);
return true;
}
bool TWPartition::Can_Repair() {
if (Mount_Read_Only)
return false;
if (Current_File_System == "vfat" && TWFunc::Path_Exists("/sbin/fsck.fat"))
return true;
else if ((Current_File_System == "ext2" || Current_File_System == "ext3" || Current_File_System == "ext4") && TWFunc::Path_Exists("/sbin/e2fsck"))
return true;
else if (Current_File_System == "exfat" && TWFunc::Path_Exists("/sbin/fsck.exfat"))
return true;
else if (Current_File_System == "f2fs" && TWFunc::Path_Exists("/sbin/fsck.f2fs"))
return true;
else if (Current_File_System == "ntfs" && (TWFunc::Path_Exists("/sbin/ntfsfix") || TWFunc::Path_Exists("/sbin/fsck.ntfs")))
return true;
return false;
}
bool TWPartition::Repair() {
string command;
if (Current_File_System == "vfat") {
if (!TWFunc::Path_Exists("/sbin/fsck.fat")) {
gui_msg(Msg(msg::kError, "repair_not_exist={1} does not exist! Cannot repair!")("fsck.fat"));
return false;
}
if (!UnMount(true))
return false;
gui_msg(Msg("repairing_using=Repairing {1} using {2}...")(Display_Name)("fsck.fat"));
Find_Actual_Block_Device();
command = "/sbin/fsck.fat -y " + Actual_Block_Device;
LOGINFO("Repair command: %s\n", command.c_str());
if (TWFunc::Exec_Cmd(command) == 0) {
gui_msg("done=Done.");
return true;
} else {
gui_msg(Msg(msg::kError, "unable_repair=Unable to repair {1}.")(Display_Name));
return false;
}
}
if (Current_File_System == "ext2" || Current_File_System == "ext3" || Current_File_System == "ext4") {
if (!TWFunc::Path_Exists("/sbin/e2fsck")) {
gui_msg(Msg(msg::kError, "repair_not_exist={1} does not exist! Cannot repair!")("e2fsck"));
return false;
}
if (!UnMount(true))
return false;
gui_msg(Msg("repairing_using=Repairing {1} using {2}...")(Display_Name)("e2fsck"));
Find_Actual_Block_Device();
command = "/sbin/e2fsck -fp " + Actual_Block_Device;
LOGINFO("Repair command: %s\n", command.c_str());
if (TWFunc::Exec_Cmd(command) == 0) {
gui_msg("done=Done.");
return true;
} else {
gui_msg(Msg(msg::kError, "unable_repair=Unable to repair {1}.")(Display_Name));
return false;
}
}
if (Current_File_System == "exfat") {
if (!TWFunc::Path_Exists("/sbin/fsck.exfat")) {
gui_msg(Msg(msg::kError, "repair_not_exist={1} does not exist! Cannot repair!")("fsck.exfat"));
return false;
}
if (!UnMount(true))
return false;
gui_msg(Msg("repairing_using=Repairing {1} using {2}...")(Display_Name)("fsck.exfat"));
Find_Actual_Block_Device();
command = "/sbin/fsck.exfat " + Actual_Block_Device;
LOGINFO("Repair command: %s\n", command.c_str());
if (TWFunc::Exec_Cmd(command) == 0) {
gui_msg("done=Done.");
return true;
} else {
gui_msg(Msg(msg::kError, "unable_repair=Unable to repair {1}.")(Display_Name));
return false;
}
}
if (Current_File_System == "f2fs") {
if (!TWFunc::Path_Exists("/sbin/fsck.f2fs")) {
gui_msg(Msg(msg::kError, "repair_not_exist={1} does not exist! Cannot repair!")("fsck.f2fs"));
return false;
}
if (!UnMount(true))
return false;
gui_msg(Msg("repairing_using=Repairing {1} using {2}...")(Display_Name)("fsck.f2fs"));
Find_Actual_Block_Device();
command = "/sbin/fsck.f2fs " + Actual_Block_Device;
LOGINFO("Repair command: %s\n", command.c_str());
if (TWFunc::Exec_Cmd(command) == 0) {
gui_msg("done=Done.");
return true;
} else {
gui_msg(Msg(msg::kError, "unable_repair=Unable to repair {1}.")(Display_Name));
return false;
}
}
if (Current_File_System == "ntfs") {
string Ntfsfix_Binary;
if (TWFunc::Path_Exists("/sbin/ntfsfix"))
Ntfsfix_Binary = "ntfsfix";
else if (TWFunc::Path_Exists("/sbin/fsck.ntfs"))
Ntfsfix_Binary = "fsck.ntfs";
else {
gui_msg(Msg(msg::kError, "repair_not_exist={1} does not exist! Cannot repair!")("ntfsfix"));
return false;
}
if (!UnMount(true))
return false;
gui_msg(Msg("repairing_using=Repairing {1} using {2}...")(Display_Name)(Ntfsfix_Binary));
Find_Actual_Block_Device();
command = "/sbin/" + Ntfsfix_Binary + " " + Actual_Block_Device;
LOGINFO("Repair command: %s\n", command.c_str());
if (TWFunc::Exec_Cmd(command) == 0) {
gui_msg("done=Done.");
return true;
} else {
gui_msg(Msg(msg::kError, "unable_repair=Unable to repair {1}.")(Display_Name));
return false;
}
}
return false;
}
bool TWPartition::Can_Resize() {
if (Mount_Read_Only)
return false;
if ((Current_File_System == "ext2" || Current_File_System == "ext3" || Current_File_System == "ext4") && TWFunc::Path_Exists("/sbin/resize2fs"))
return true;
return false;
}
bool TWPartition::Resize() {
string command;
if (Current_File_System == "ext2" || Current_File_System == "ext3" || Current_File_System == "ext4") {
if (!Can_Repair()) {
LOGINFO("Cannot resize %s because %s cannot be repaired before resizing.\n", Display_Name.c_str(), Display_Name.c_str());
gui_msg(Msg(msg::kError, "cannot_resize=Cannot resize {1}.")(Display_Name));
return false;
}
if (!TWFunc::Path_Exists("/sbin/resize2fs")) {
LOGINFO("resize2fs does not exist! Cannot resize!\n");
gui_msg(Msg(msg::kError, "cannot_resize=Cannot resize {1}.")(Display_Name));
return false;
}
// Repair will unmount so no need to do it twice
gui_msg(Msg("repair_resize=Repairing {1} before resizing.")( Display_Name));
if (!Repair())
return false;
gui_msg(Msg("resizing=Resizing {1} using {2}...")(Display_Name)("resize2fs"));
Find_Actual_Block_Device();
command = "/sbin/resize2fs " + Actual_Block_Device;
if (Length != 0) {
unsigned long long Actual_Size = IOCTL_Get_Block_Size();
if (Actual_Size == 0)
return false;
unsigned long long Block_Count;
if (Length < 0) {
// Reduce overall size by this length
Block_Count = (Actual_Size / 1024LLU) - ((unsigned long long)(Length * -1) / 1024LLU);
} else {
// This is the size, not a size reduction
Block_Count = ((unsigned long long)(Length) / 1024LLU);
}
char temp[256];
sprintf(temp, "%llu", Block_Count);
command += " ";
command += temp;
command += "K";
}
LOGINFO("Resize command: %s\n", command.c_str());
if (TWFunc::Exec_Cmd(command) == 0) {
Update_Size(true);
gui_msg("done=Done.");
return true;
} else {
Update_Size(true);
gui_msg(Msg(msg::kError, "unable_resize=Unable to resize {1}.")(Display_Name));
return false;
}
}
return false;
}
bool TWPartition::Backup(PartitionSettings *part_settings, pid_t *tar_fork_pid) {
if (Backup_Method == BM_FILES)
return Backup_Tar(part_settings, tar_fork_pid);
else if (Backup_Method == BM_DD)
return Backup_Image(part_settings);
else if (Backup_Method == BM_FLASH_UTILS)
return Backup_Dump_Image(part_settings);
LOGERR("Unknown backup method for '%s'\n", Mount_Point.c_str());
return false;
}
bool TWPartition::Check_Restore_File_MD5(const string& Filename) {
twrpDigest md5sum;
md5sum.setfn(Filename);
switch (md5sum.verify_md5digest()) {
case MD5_OK:
gui_msg(Msg("md5_matched=MD5 matched for '{1}'.")(Filename));
return true;
case MD5_FILE_UNREADABLE:
case MD5_NOT_FOUND:
gui_msg(Msg(msg::kError, "no_md5_found=No md5 file found for '{1}'. Please unselect Enable MD5 verification to restore.")(Filename));
break;
case MD5_MATCH_FAIL:
gui_msg(Msg(msg::kError, "md5_fail_match=MD5 failed to match on '{1}'.")(Filename));
break;
}
return false;
}
bool TWPartition::Check_MD5(PartitionSettings *part_settings) {
string Full_Filename;
char split_filename[512];
int index = 0;
sync();
Full_Filename = part_settings->Backup_Folder + "/" + Backup_FileName;
if (!TWFunc::Path_Exists(Full_Filename)) {
// This is a split archive, we presume
memset(split_filename, 0, sizeof(split_filename));
while (index < 1000) {
sprintf(split_filename, "%s%03i", Full_Filename.c_str(), index);
if (!TWFunc::Path_Exists(split_filename))
break;
LOGINFO("split_filename: %s\n", split_filename);
if (!Check_Restore_File_MD5(split_filename))
return false;
index++;
}
return true;
}
return Check_Restore_File_MD5(Full_Filename); // Single file archive
}
bool TWPartition::Restore(PartitionSettings *part_settings) {
TWFunc::GUI_Operation_Text(TW_RESTORE_TEXT, Display_Name, gui_parse_text("{@restoring_hdr}"));
LOGINFO("Restore filename is: %s/%s\n", part_settings->Backup_Folder.c_str(), Backup_FileName.c_str());
string Restore_File_System = Get_Restore_File_System(part_settings);
if (Is_File_System(Restore_File_System))
return Restore_Tar(part_settings);
else if (Is_Image(Restore_File_System))
return Restore_Image(part_settings);
LOGERR("Unknown restore method for '%s'\n", Mount_Point.c_str());
return false;
}
string TWPartition::Get_Restore_File_System(PartitionSettings *part_settings) {
size_t first_period, second_period;
string Restore_File_System;
// Parse backup filename to extract the file system before wiping
first_period = Backup_FileName.find(".");
if (first_period == string::npos) {
LOGERR("Unable to find file system (first period).\n");
return string();
}
Restore_File_System = Backup_FileName.substr(first_period + 1, Backup_FileName.size() - first_period - 1);
second_period = Restore_File_System.find(".");
if (second_period == string::npos) {
LOGERR("Unable to find file system (second period).\n");
return string();
}
Restore_File_System.resize(second_period);
LOGINFO("Restore file system is: '%s'.\n", Restore_File_System.c_str());
return Restore_File_System;
}
string TWPartition::Backup_Method_By_Name() {
if (Backup_Method == BM_NONE)
return "none";
else if (Backup_Method == BM_FILES)
return "files";
else if (Backup_Method == BM_DD)
return "dd";
else if (Backup_Method == BM_FLASH_UTILS)
return "flash_utils";
else
return "undefined";
return "ERROR!";
}
bool TWPartition::Decrypt(string Password) {
LOGINFO("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;
Has_Data_Media = false;
Decrypted_Block_Device = "";
#ifdef TW_INCLUDE_CRYPTO
if (Is_Decrypted && !Decrypted_Block_Device.empty()) {
if (!UnMount(true))
return false;
if (delete_crypto_blk_dev((char*)("userdata")) != 0) {
LOGERR("Error deleting crypto block device, continuing anyway.\n");
}
}
#endif
Is_Decrypted = false;
Is_Encrypted = false;
Find_Actual_Block_Device();
if (Crypto_Key_Location == "footer") {
int newlen, fd;
if (Length != 0) {
newlen = Length;
if (newlen < 0)
newlen = newlen * -1;
} else {
newlen = CRYPT_FOOTER_OFFSET;
}
if ((fd = open(Actual_Block_Device.c_str(), O_RDWR)) < 0) {
gui_print_color("warning", "Unable to open '%s' to wipe crypto key\n", Actual_Block_Device.c_str());
} else {
unsigned int block_count;
if ((ioctl(fd, BLKGETSIZE, &block_count)) == -1) {
gui_print_color("warning", "Unable to get block size for wiping crypto footer.\n");
} else {
off64_t offset = ((off64_t)block_count * 512) - newlen;
if (lseek64(fd, offset, SEEK_SET) == -1) {
gui_print_color("warning", "Unable to lseek64 for wiping crypto footer.\n");
} else {
void* buffer = malloc(newlen);
if (!buffer) {
gui_print_color("warning", "Failed to malloc for wiping crypto footer.\n");
} else {
memset(buffer, 0, newlen);
int ret = write(fd, buffer, newlen);
if (ret != newlen) {
gui_print_color("warning", "Failed to wipe crypto footer.\n");
} else {
LOGINFO("Successfully wiped crypto footer.\n");
}
free(buffer);
}
}
}
close(fd);
}
} else {
if (TWFunc::IOCTL_Get_Block_Size(Crypto_Key_Location.c_str()) >= 16384LLU) {
string Command = "dd of='" + Crypto_Key_Location + "' if=/dev/zero bs=16384 count=1";
TWFunc::Exec_Cmd(Command);
} else {
LOGINFO("Crypto key location reports size < 16K so not wiping crypto footer.\n");
}
}
if (Wipe(Fstab_File_System)) {
Has_Data_Media = Save_Data_Media;
if (Has_Data_Media && !Symlink_Mount_Point.empty()) {
Recreate_Media_Folder();
if (Mount(false))
PartitionManager.Add_MTP_Storage(MTP_Storage_ID);
}
DataManager::SetValue(TW_IS_ENCRYPTED, 0);
#ifndef TW_OEM_BUILD
gui_msg("format_data_msg=You may need to reboot recovery to be able to use /data again.");
#endif
return true;
} else {
Has_Data_Media = Save_Data_Media;
gui_err("format_data_err=Unable to format to remove encryption.");
if (Has_Data_Media && Mount(false))
PartitionManager.Add_MTP_Storage(MTP_Storage_ID);
return false;
}
return false;
}
void TWPartition::Check_FS_Type() {
const char* type;
blkid_probe pr;
if (Fstab_File_System == "yaffs2" || Fstab_File_System == "mtd" || Fstab_File_System == "bml" || Ignore_Blkid)
return; // Running blkid on some mtd devices causes a massive crash or needs to be skipped
Find_Actual_Block_Device();
if (!Is_Present)
return;
pr = blkid_new_probe_from_filename(Actual_Block_Device.c_str());
if (blkid_do_fullprobe(pr)) {
blkid_free_probe(pr);
LOGINFO("Can't probe device %s\n", Actual_Block_Device.c_str());
return;
}
if (blkid_probe_lookup_value(pr, "TYPE", &type, NULL) < 0) {
blkid_free_probe(pr);
LOGINFO("can't find filesystem on device %s\n", Actual_Block_Device.c_str());
return;
}
Current_File_System = type;
blkid_free_probe(pr);
}
bool TWPartition::Wipe_EXT23(string File_System) {
if (!UnMount(true))
return false;
if (TWFunc::Path_Exists("/sbin/mke2fs")) {
string command;
gui_msg(Msg("formatting_using=Formatting {1} using {2}...")(Display_Name)("mke2fs"));
Find_Actual_Block_Device();
command = "mke2fs -t " + File_System + " -m 0 " + Actual_Block_Device;
LOGINFO("mke2fs command: %s\n", command.c_str());
if (TWFunc::Exec_Cmd(command) == 0) {
Current_File_System = File_System;
Recreate_AndSec_Folder();
gui_msg("done=Done.");
return true;
} else {
gui_msg(Msg(msg::kError, "unable_to_wipe=Unable to wipe {1}.")(Display_Name));
return false;
}
} else
return Wipe_RMRF();
return false;
}
bool TWPartition::Wipe_EXT4() {
Find_Actual_Block_Device();
if (!Is_Present) {
LOGINFO("Block device not present, cannot wipe %s.\n", Display_Name.c_str());
gui_msg(Msg(msg::kError, "unable_to_wipe=Unable to wipe {1}.")(Display_Name));
return false;
}
if (!UnMount(true))
return false;
#if defined(USE_EXT4)
int ret;
char *secontext = NULL;
gui_msg(Msg("formatting_using=Formatting {1} using {2}...")(Display_Name)("make_ext4fs"));
if (!selinux_handle || selabel_lookup(selinux_handle, &secontext, Mount_Point.c_str(), S_IFDIR) < 0) {
LOGINFO("Cannot lookup security context for '%s'\n", Mount_Point.c_str());
ret = make_ext4fs(Actual_Block_Device.c_str(), Length, Mount_Point.c_str(), NULL);
} else {
ret = make_ext4fs(Actual_Block_Device.c_str(), Length, Mount_Point.c_str(), selinux_handle);
}
if (ret != 0) {
gui_msg(Msg(msg::kError, "unable_to_wipe=Unable to wipe {1}.")(Display_Name));
return false;
} else {
string sedir = Mount_Point + "/lost+found";
PartitionManager.Mount_By_Path(sedir.c_str(), true);
rmdir(sedir.c_str());
mkdir(sedir.c_str(), S_IRWXU | S_IRWXG | S_IWGRP | S_IXGRP);
return true;
}
#else
if (TWFunc::Path_Exists("/sbin/make_ext4fs")) {
string Command;
gui_msg(Msg("formatting_using=Formatting {1} using {2}...")(Display_Name)("make_ext4fs"));
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;
}
if (TWFunc::Path_Exists("/file_contexts")) {
Command += " -S /file_contexts";
}
Command += " -a " + Mount_Point + " " + Actual_Block_Device;
LOGINFO("make_ext4fs command: %s\n", Command.c_str());
if (TWFunc::Exec_Cmd(Command) == 0) {
Current_File_System = "ext4";
Recreate_AndSec_Folder();
gui_msg("done=Done.");
return true;
} else {
gui_msg(Msg(msg::kError, "unable_to_wipe=Unable to wipe {1}.")(Display_Name));
return false;
}
} else
return Wipe_EXT23("ext4");
#endif
return false;
}
bool TWPartition::Wipe_FAT() {
string command;
if (TWFunc::Path_Exists("/sbin/mkfs.fat")) {
if (!UnMount(true))
return false;
gui_msg(Msg("formatting_using=Formatting {1} using {2}...")(Display_Name)("mkfs.fat"));
Find_Actual_Block_Device();
command = "mkfs.fat " + Actual_Block_Device;
if (TWFunc::Exec_Cmd(command) == 0) {
Current_File_System = "vfat";
Recreate_AndSec_Folder();
gui_msg("done=Done.");
return true;
} else {
gui_msg(Msg(msg::kError, "unable_to_wipe=Unable to wipe {1}.")(Display_Name));
return false;
}
return true;
}
else
return Wipe_RMRF();
return false;
}
bool TWPartition::Wipe_EXFAT() {
string command;
if (TWFunc::Path_Exists("/sbin/mkexfatfs")) {
if (!UnMount(true))
return false;
gui_msg(Msg("formatting_using=Formatting {1} using {2}...")(Display_Name)("mkexfatfs"));
Find_Actual_Block_Device();
command = "mkexfatfs " + Actual_Block_Device;
if (TWFunc::Exec_Cmd(command) == 0) {
Recreate_AndSec_Folder();
gui_msg("done=Done.");
return true;
} else {
gui_msg(Msg(msg::kError, "unable_to_wipe=Unable to wipe {1}.")(Display_Name));
return false;
}
return true;
}
return false;
}
bool TWPartition::Wipe_MTD() {
if (!UnMount(true))
return false;
gui_msg(Msg("formatting_using=Formatting {1} using {2}...")(Display_Name)("MTD"));
mtd_scan_partitions();
const MtdPartition* mtd = mtd_find_partition_by_name(MTD_Name.c_str());
if (mtd == NULL) {
LOGERR("No mtd partition named '%s'", MTD_Name.c_str());
return false;
}
MtdWriteContext* ctx = mtd_write_partition(mtd);
if (ctx == NULL) {
LOGERR("Can't write '%s', failed to format.", MTD_Name.c_str());
return false;
}
if (mtd_erase_blocks(ctx, -1) == -1) {
mtd_write_close(ctx);
LOGERR("Failed to format '%s'", MTD_Name.c_str());
return false;
}
if (mtd_write_close(ctx) != 0) {
LOGERR("Failed to close '%s'", MTD_Name.c_str());
return false;
}
Current_File_System = "yaffs2";
Recreate_AndSec_Folder();
gui_msg("done=Done.");
return true;
}
bool TWPartition::Wipe_RMRF() {
if (!Mount(true))
return false;
// This is the only wipe that leaves the partition mounted, so we
// must manually remove the partition from MTP if it is a storage
// partition.
if (Is_Storage)
PartitionManager.Remove_MTP_Storage(MTP_Storage_ID);
gui_msg(Msg("remove_all=Removing all files under '{1}'")(Mount_Point));
TWFunc::removeDir(Mount_Point, true);
Recreate_AndSec_Folder();
return true;
}
bool TWPartition::Wipe_F2FS() {
string command;
if (TWFunc::Path_Exists("/sbin/mkfs.f2fs")) {
if (!UnMount(true))
return false;
gui_msg(Msg("formatting_using=Formatting {1} using {2}...")(Display_Name)("mkfs.f2fs"));
Find_Actual_Block_Device();
command = "mkfs.f2fs -t 0";
if (!Is_Decrypted && Length != 0) {
// Only use length if we're not decrypted
char len[32];
int mod_length = Length;
if (Length < 0)
mod_length *= -1;
sprintf(len, "%i", mod_length);
command += " -r ";
command += len;
}
command += " " + Actual_Block_Device;
if (TWFunc::Exec_Cmd(command) == 0) {
Recreate_AndSec_Folder();
gui_msg("done=Done.");
return true;
} else {
gui_msg(Msg(msg::kError, "unable_to_wipe=Unable to wipe {1}.")(Display_Name));
return false;
}
return true;
} else {
LOGINFO("mkfs.f2fs binary not found, using rm -rf to wipe.\n");
return Wipe_RMRF();
}
return false;
}
bool TWPartition::Wipe_NTFS() {
string command;
string Ntfsmake_Binary;
if (TWFunc::Path_Exists("/sbin/mkntfs"))
Ntfsmake_Binary = "mkntfs";
else if (TWFunc::Path_Exists("/sbin/mkfs.ntfs"))
Ntfsmake_Binary = "mkfs.ntfs";
else
return false;
if (!UnMount(true))
return false;
gui_msg(Msg("formatting_using=Formatting {1} using {2}...")(Display_Name)(Ntfsmake_Binary));
Find_Actual_Block_Device();
command = "/sbin/" + Ntfsmake_Binary + " " + Actual_Block_Device;
if (TWFunc::Exec_Cmd(command) == 0) {
Recreate_AndSec_Folder();
gui_msg("done=Done.");
return true;
} else {
gui_msg(Msg(msg::kError, "unable_to_wipe=Unable to wipe {1}.")(Display_Name));
return false;
}
return false;
}
bool TWPartition::Wipe_Data_Without_Wiping_Media() {
#ifdef TW_OEM_BUILD
// In an OEM Build we want to do a full format
return Wipe_Encryption();
#else
bool ret = false;
if (!Mount(true))
return false;
gui_msg("wiping_data=Wiping data without wiping /data/media ...");
ret = Wipe_Data_Without_Wiping_Media_Func(Mount_Point + "/");
if (ret)
gui_msg("done=Done.");
return ret;
#endif // ifdef TW_OEM_BUILD
}
bool TWPartition::Wipe_Data_Without_Wiping_Media_Func(const string& parent __unused) {
string dir;
DIR* d;
d = opendir(parent.c_str());
if (d != NULL) {
struct dirent* de;
while ((de = readdir(d)) != NULL) {
if (strcmp(de->d_name, ".") == 0 || strcmp(de->d_name, "..") == 0) continue;
dir = parent;
dir.append(de->d_name);
if (wipe_exclusions.check_skip_dirs(dir)) {
LOGINFO("skipped '%s'\n", dir.c_str());
continue;
}
if (de->d_type == DT_DIR) {
dir.append("/");
if (!Wipe_Data_Without_Wiping_Media_Func(dir)) {
closedir(d);
return false;
}
rmdir(dir.c_str());
} else if (de->d_type == DT_REG || de->d_type == DT_LNK || de->d_type == DT_FIFO || de->d_type == DT_SOCK) {
if (!unlink(dir.c_str()))
LOGINFO("Unable to unlink '%s': %s\n", dir.c_str(), strerror(errno));
}
}
closedir(d);
return true;
}
gui_msg(Msg(msg::kError, "error_opening_strerr=Error opening: '{1}' ({2})")(Mount_Point)(strerror(errno)));
return false;
}
bool TWPartition::Backup_Tar(PartitionSettings *part_settings, pid_t *tar_fork_pid) {
string Full_FileName;
twrpTar tar;
if (!Mount(true))
return false;
TWFunc::GUI_Operation_Text(TW_BACKUP_TEXT, Backup_Display_Name, "Backing Up");
gui_msg(Msg("backing_up=Backing up {1}...")(Backup_Display_Name));
DataManager::GetValue(TW_USE_COMPRESSION_VAR, tar.use_compression);
#ifndef TW_EXCLUDE_ENCRYPTED_BACKUPS
if (Can_Encrypt_Backup) {
DataManager::GetValue("tw_encrypt_backup", tar.use_encryption);
if (tar.use_encryption) {
if (Use_Userdata_Encryption)
tar.userdata_encryption = tar.use_encryption;
string Password;
DataManager::GetValue("tw_backup_password", Password);
tar.setpassword(Password);
} else {
tar.use_encryption = 0;
}
}
#endif
Backup_FileName = Backup_Name + "." + Current_File_System + ".win";
Full_FileName = part_settings->Backup_Folder + "/" + Backup_FileName;
if (Has_Data_Media)
gui_msg(Msg(msg::kWarning, "backup_storage_warning=Backups of {1} do not include any files in internal storage such as pictures or downloads.")(Display_Name));
tar.part_settings = part_settings;
tar.backup_exclusions = &backup_exclusions;
tar.setdir(Backup_Path);
tar.setfn(Full_FileName);
tar.setsize(Backup_Size);
tar.partition_name = Backup_Name;
tar.backup_folder = part_settings->Backup_Folder;
if (tar.createTarFork(tar_fork_pid) != 0)
return false;
return true;
}
bool TWPartition::Backup_Image(PartitionSettings *part_settings) {
string Full_FileName, adb_file_name;
TWFunc::GUI_Operation_Text(TW_BACKUP_TEXT, Display_Name, gui_parse_text("{@backing}"));
gui_msg(Msg("backing_up=Backing up {1}...")(Backup_Display_Name));
Backup_FileName = Backup_Name + "." + Current_File_System + ".win";
if (part_settings->adbbackup) {
Full_FileName = TW_ADB_BACKUP;
adb_file_name = part_settings->Backup_Folder + "/" + Backup_FileName;
}
else
Full_FileName = part_settings->Backup_Folder + "/" + Backup_FileName;
part_settings->total_restore_size = Backup_Size;
if (part_settings->adbbackup) {
if (!twadbbu::Write_TWIMG(adb_file_name, Backup_Size))
return false;
}
if (!Raw_Read_Write(part_settings))
return false;
if (part_settings->adbbackup) {
if (!twadbbu::Write_TWEOF())
return false;
}
return true;
}
bool TWPartition::Raw_Read_Write(PartitionSettings *part_settings) {
unsigned long long RW_Block_Size, Remain = Backup_Size;
int src_fd = -1, dest_fd = -1;
ssize_t bs;
bool ret = false;
void* buffer = NULL;
unsigned long long backedup_size = 0;
string srcfn, destfn;
if (part_settings->PM_Method == PM_BACKUP) {
srcfn = Actual_Block_Device;
if (part_settings->adbbackup)
destfn = TW_ADB_BACKUP;
else
destfn = part_settings->Backup_Folder + "/" + Backup_FileName;
}
else {
destfn = Actual_Block_Device;
if (part_settings->adbbackup) {
srcfn = TW_ADB_RESTORE;
} else {
srcfn = part_settings->Backup_Folder + "/" + Backup_FileName;
Remain = TWFunc::Get_File_Size(srcfn);
}
}
src_fd = open(srcfn.c_str(), O_RDONLY | O_LARGEFILE);
if (src_fd < 0) {
gui_msg(Msg(msg::kError, "error_opening_strerr=Error opening: '{1}' ({2})")(srcfn.c_str())(strerror(errno)));
return false;
}
dest_fd = open(destfn.c_str(), O_WRONLY | O_CREAT | O_TRUNC | O_LARGEFILE, S_IRUSR | S_IWUSR);
if (dest_fd < 0) {
gui_msg(Msg(msg::kError, "error_opening_strerr=Error opening: '{1}' ({2})")(destfn.c_str())(strerror(errno)));
goto exit;
}
LOGINFO("Reading '%s', writing '%s'\n", srcfn.c_str(), destfn.c_str());
if (part_settings->adbbackup) {
RW_Block_Size = MAX_ADB_READ;
bs = MAX_ADB_READ;
}
else {
RW_Block_Size = 1048576LLU; // 1MB
bs = (ssize_t)(RW_Block_Size);
}
buffer = malloc((size_t)bs);
if (!buffer) {
LOGINFO("Raw_Read_Write failed to malloc\n");
goto exit;
}
if (part_settings->progress)
part_settings->progress->SetPartitionSize(part_settings->total_restore_size);
while (Remain > 0) {
if (Remain < RW_Block_Size)
bs = (ssize_t)(Remain);
if (read(src_fd, buffer, bs) != bs) {
LOGINFO("Error reading source fd (%s)\n", strerror(errno));
goto exit;
}
if (write(dest_fd, buffer, bs) != bs) {
LOGINFO("Error writing destination fd (%s)\n", strerror(errno));
goto exit;
}
backedup_size += (unsigned long long)(bs);
Remain -= (unsigned long long)(bs);
if (part_settings->progress)
part_settings->progress->UpdateSize(backedup_size);
if (PartitionManager.Check_Backup_Cancel() != 0)
goto exit;
}
if (part_settings->progress)
part_settings->progress->UpdateDisplayDetails(true);
fsync(dest_fd);
if (!part_settings->adbbackup && part_settings->PM_Method == PM_BACKUP) {
tw_set_default_metadata(destfn.c_str());
LOGINFO("Restored default metadata for %s\n", destfn.c_str());
}
ret = true;
exit:
if (src_fd >= 0)
close(src_fd);
if (dest_fd >= 0)
close(dest_fd);
if (buffer)
free(buffer);
return ret;
}
bool TWPartition::Backup_Dump_Image(PartitionSettings *part_settings) {
string Full_FileName, Command;
TWFunc::GUI_Operation_Text(TW_BACKUP_TEXT, Display_Name, gui_parse_text("{@backing}"));
gui_msg(Msg("backing_up=Backing up {1}...")(Backup_Display_Name));
if (part_settings->progress)
part_settings->progress->SetPartitionSize(Backup_Size);
Backup_FileName = Backup_Name + "." + Current_File_System + ".win";
Full_FileName = part_settings->Backup_Folder + "/" + Backup_FileName;
Command = "dump_image " + MTD_Name + " '" + Full_FileName + "'";
LOGINFO("Backup command: '%s'\n", Command.c_str());
TWFunc::Exec_Cmd(Command);
tw_set_default_metadata(Full_FileName.c_str());
if (TWFunc::Get_File_Size(Full_FileName) == 0) {
// Actual size may not match backup size due to bad blocks on MTD devices so just check for 0 bytes
gui_msg(Msg(msg::kError, "backup_size=Backup file size for '{1}' is 0 bytes.")(Full_FileName));
return false;
}
if (part_settings->progress)
part_settings->progress->UpdateSize(Backup_Size);
return true;
}
unsigned long long TWPartition::Get_Restore_Size(PartitionSettings *part_settings) {
if (!part_settings->adbbackup) {
InfoManager restore_info(part_settings->Backup_Folder + "/" + Backup_Name + ".info");
if (restore_info.LoadValues() == 0) {
if (restore_info.GetValue("backup_size", Restore_Size) == 0) {
LOGINFO("Read info file, restore size is %llu\n", Restore_Size);
return Restore_Size;
}
}
}
string Full_FileName = part_settings->Backup_Folder + "/" + Backup_FileName;
string Restore_File_System = Get_Restore_File_System(part_settings);
if (Is_Image(Restore_File_System)) {
Restore_Size = TWFunc::Get_File_Size(Full_FileName);
return Restore_Size;
}
twrpTar tar;
tar.setdir(Backup_Path);
tar.setfn(Full_FileName);
tar.backup_name = Full_FileName;
#ifndef TW_EXCLUDE_ENCRYPTED_BACKUPS
string Password;
DataManager::GetValue("tw_restore_password", Password);
if (!Password.empty())
tar.setpassword(Password);
#endif
tar.partition_name = Backup_Name;
tar.backup_folder = part_settings->Backup_Folder;
tar.part_settings = part_settings;
Restore_Size = tar.get_size();
return Restore_Size;
}
bool TWPartition::Restore_Tar(PartitionSettings *part_settings) {
string Full_FileName;
bool ret = false;
string Restore_File_System = Get_Restore_File_System(part_settings);
if (Has_Android_Secure) {
if (!Wipe_AndSec())
return false;
} else {
gui_msg(Msg("wiping=Wiping {1}")(Backup_Display_Name));
if (Has_Data_Media && Mount_Point == "/data" && Restore_File_System != Current_File_System) {
gui_msg(Msg(msg::kWarning, "datamedia_fs_restore=WARNING: This /data backup was made with {1} file system! The backup may not boot unless you change back to {1}.")(Restore_File_System));
if (!Wipe_Data_Without_Wiping_Media())
return false;
} else {
if (!Wipe(Restore_File_System))
return false;
}
}
TWFunc::GUI_Operation_Text(TW_RESTORE_TEXT, Backup_Display_Name, gui_parse_text("{@restoring_hdr}"));
gui_msg(Msg("restoring=Restoring {1}...")(Backup_Display_Name));
// Remount as read/write as needed so we can restore the backup
if (!ReMount_RW(true))
return false;
Full_FileName = part_settings->Backup_Folder + "/" + Backup_FileName;
twrpTar tar;
tar.part_settings = part_settings;
tar.setdir(Backup_Path);
tar.setfn(Full_FileName);
tar.backup_name = Backup_Name;
#ifndef TW_EXCLUDE_ENCRYPTED_BACKUPS
string Password;
DataManager::GetValue("tw_restore_password", Password);
if (!Password.empty())
tar.setpassword(Password);
#endif
part_settings->progress->SetPartitionSize(Get_Restore_Size(part_settings));
if (tar.extractTarFork() != 0)
ret = false;
else
ret = true;
#ifdef HAVE_CAPABILITIES
// Restore capabilities to the run-as binary
if (Mount_Point == "/system" && Mount(true) && TWFunc::Path_Exists("/system/bin/run-as")) {
struct vfs_cap_data cap_data;
uint64_t capabilities = (1 << CAP_SETUID) | (1 << CAP_SETGID);
memset(&cap_data, 0, sizeof(cap_data));
cap_data.magic_etc = VFS_CAP_REVISION | VFS_CAP_FLAGS_EFFECTIVE;
cap_data.data[0].permitted = (uint32_t) (capabilities & 0xffffffff);
cap_data.data[0].inheritable = 0;
cap_data.data[1].permitted = (uint32_t) (capabilities >> 32);
cap_data.data[1].inheritable = 0;
if (setxattr("/system/bin/run-as", XATTR_NAME_CAPS, &cap_data, sizeof(cap_data), 0) < 0) {
LOGINFO("Failed to reset capabilities of /system/bin/run-as binary.\n");
} else {
LOGINFO("Reset capabilities of /system/bin/run-as binary successful.\n");
}
}
#endif
if (Mount_Read_Only || Mount_Flags & MS_RDONLY)
// Remount as read only when restoration is complete
ReMount(true);
return ret;
}
bool TWPartition::Restore_Image(PartitionSettings *part_settings) {
string Full_FileName;
string Restore_File_System = Get_Restore_File_System(part_settings);
TWFunc::GUI_Operation_Text(TW_RESTORE_TEXT, Backup_Display_Name, gui_parse_text("{@restoring_hdr}"));
gui_msg(Msg("restoring=Restoring {1}...")(Backup_Display_Name));
if (part_settings->adbbackup)
Full_FileName = TW_ADB_RESTORE;
else
Full_FileName = part_settings->Backup_Folder + "/" + Backup_FileName;
if (Restore_File_System == "emmc") {
if (!part_settings->adbbackup)
part_settings->total_restore_size = (uint64_t)(TWFunc::Get_File_Size(Full_FileName));
if (!Raw_Read_Write(part_settings))
return false;
} else if (Restore_File_System == "mtd" || Restore_File_System == "bml") {
if (!Flash_Image_FI(Full_FileName, part_settings->progress))
return false;
}
if (part_settings->adbbackup) {
if (!twadbbu::Write_TWEOF())
return false;
}
return true;
}
bool TWPartition::Update_Size(bool Display_Error) {
bool ret = false, Was_Already_Mounted = false;
Find_Actual_Block_Device();
if (!Can_Be_Mounted && !Is_Encrypted) {
if (TWFunc::Path_Exists(Actual_Block_Device) && Find_Partition_Size()) {
Used = Size;
Backup_Size = Size;
return true;
}
return false;
}
Was_Already_Mounted = Is_Mounted();
if (Removable || Is_Encrypted) {
if (!Mount(false))
return true;
} else if (!Mount(Display_Error))
return false;
ret = Get_Size_Via_statfs(Display_Error);
if (!ret || Size == 0) {
if (!Get_Size_Via_df(Display_Error)) {
if (!Was_Already_Mounted)
UnMount(false);
return false;
}
}
if (Has_Data_Media) {
if (Mount(Display_Error)) {
Used = backup_exclusions.Get_Folder_Size(Mount_Point);
Backup_Size = Used;
int bak = (int)(Used / 1048576LLU);
int fre = (int)(Free / 1048576LLU);
LOGINFO("Data backup size is %iMB, free: %iMB.\n", bak, fre);
} else {
if (!Was_Already_Mounted)
UnMount(false);
return false;
}
} else if (Has_Android_Secure) {
if (Mount(Display_Error))
Backup_Size = backup_exclusions.Get_Folder_Size(Backup_Path);
else {
if (!Was_Already_Mounted)
UnMount(false);
return false;
}
}
if (!Was_Already_Mounted)
UnMount(false);
return true;
}
void TWPartition::Find_Actual_Block_Device(void) {
if (Is_Decrypted && !Decrypted_Block_Device.empty()) {
Actual_Block_Device = Decrypted_Block_Device;
if (TWFunc::Path_Exists(Decrypted_Block_Device)) {
Is_Present = true;
return;
}
} else if (SlotSelect && TWFunc::Path_Exists(Primary_Block_Device + PartitionManager.Get_Active_Slot_Suffix())) {
Actual_Block_Device = Primary_Block_Device + PartitionManager.Get_Active_Slot_Suffix();
unlink(Primary_Block_Device.c_str());
symlink(Actual_Block_Device.c_str(), Primary_Block_Device.c_str()); // we create a non-slot symlink pointing to the currently selected slot which may assist zips with installing
Is_Present = true;
return;
} else if (TWFunc::Path_Exists(Primary_Block_Device)) {
Is_Present = true;
Actual_Block_Device = Primary_Block_Device;
return;
}
if (!Alternate_Block_Device.empty() && TWFunc::Path_Exists(Alternate_Block_Device)) {
Actual_Block_Device = Alternate_Block_Device;
Is_Present = true;
} else {
Is_Present = false;
}
}
void TWPartition::Recreate_Media_Folder(void) {
string Command;
string Media_Path = Mount_Point + "/media";
if (Is_FBE) {
LOGINFO("Not recreating media folder on FBE\n");
return;
}
if (!Mount(true)) {
gui_msg(Msg(msg::kError, "recreate_folder_err=Unable to recreate {1} folder.")(Media_Path));
} else if (!TWFunc::Path_Exists(Media_Path)) {
PartitionManager.Mount_By_Path(Symlink_Mount_Point, true);
LOGINFO("Recreating %s folder.\n", Media_Path.c_str());
mkdir(Media_Path.c_str(), 0770);
string Internal_path = DataManager::GetStrValue("tw_internal_path");
if (!Internal_path.empty()) {
LOGINFO("Recreating %s folder.\n", Internal_path.c_str());
mkdir(Internal_path.c_str(), 0770);
}
#ifdef TW_INTERNAL_STORAGE_PATH
mkdir(EXPAND(TW_INTERNAL_STORAGE_PATH), 0770);
#endif
// Afterwards, we will try to set the
// default metadata that we were hopefully able to get during
// early boot.
tw_set_default_metadata(Media_Path.c_str());
if (!Internal_path.empty())
tw_set_default_metadata(Internal_path.c_str());
// Toggle mount to ensure that "internal sdcard" gets mounted
PartitionManager.UnMount_By_Path(Symlink_Mount_Point, true);
PartitionManager.Mount_By_Path(Symlink_Mount_Point, true);
}
}
void TWPartition::Recreate_AndSec_Folder(void) {
if (!Has_Android_Secure)
return;
LOGINFO("Creating %s: %s\n", Backup_Display_Name.c_str(), Symlink_Path.c_str());
if (!Mount(true)) {
gui_msg(Msg(msg::kError, "recreate_folder_err=Unable to recreate {1} folder.")(Backup_Name));
} else if (!TWFunc::Path_Exists(Symlink_Path)) {
LOGINFO("Recreating %s folder.\n", Backup_Name.c_str());
PartitionManager.Mount_By_Path(Symlink_Mount_Point, true);
mkdir(Symlink_Path.c_str(), S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH);
PartitionManager.UnMount_By_Path(Symlink_Mount_Point, true);
}
}
uint64_t TWPartition::Get_Max_FileSize() {
uint64_t maxFileSize = 0;
const uint64_t constGB = (uint64_t) 1024 * 1024 * 1024;
const uint64_t constTB = (uint64_t) constGB * 1024;
const uint64_t constPB = (uint64_t) constTB * 1024;
if (Current_File_System == "ext4")
maxFileSize = 16 * constTB; //16 TB
else if (Current_File_System == "vfat")
maxFileSize = 4 * constGB; //4 GB
else if (Current_File_System == "ntfs")
maxFileSize = 256 * constTB; //256 TB
else if (Current_File_System == "exfat")
maxFileSize = 16 * constPB; //16 PB
else if (Current_File_System == "ext3")
maxFileSize = 2 * constTB; //2 TB
else if (Current_File_System == "f2fs")
maxFileSize = 3.94 * constTB; //3.94 TB
else
maxFileSize = 100000000L;
return maxFileSize - 1;
}
bool TWPartition::Flash_Image(PartitionSettings *part_settings) {
string Restore_File_System, full_filename;
full_filename = part_settings->Backup_Folder + "/" + Backup_FileName;
LOGINFO("Image filename is: %s\n", Backup_FileName.c_str());
if (Backup_Method == BM_FILES) {
LOGERR("Cannot flash images to file systems\n");
return false;
} else if (!Can_Flash_Img) {
LOGERR("Cannot flash images to partitions %s\n", Display_Name.c_str());
return false;
} else {
if (!Find_Partition_Size()) {
LOGERR("Unable to find partition size for '%s'\n", Mount_Point.c_str());
return false;
}
unsigned long long image_size = TWFunc::Get_File_Size(full_filename);
if (image_size > Size) {
LOGINFO("Size (%llu bytes) of image '%s' is larger than target device '%s' (%llu bytes)\n",
image_size, Backup_FileName.c_str(), Actual_Block_Device.c_str(), Size);
gui_err("img_size_err=Size of image is larger than target device");
return false;
}
if (Backup_Method == BM_DD) {
if (!part_settings->adbbackup) {
if (Is_Sparse_Image(full_filename)) {
return Flash_Sparse_Image(full_filename);
}
}
return Raw_Read_Write(part_settings);
} else if (Backup_Method == BM_FLASH_UTILS) {
return Flash_Image_FI(full_filename, NULL);
}
}
LOGERR("Unknown flash method for '%s'\n", Mount_Point.c_str());
return false;
}
bool TWPartition::Is_Sparse_Image(const string& Filename) {
uint32_t magic = 0;
int fd = open(Filename.c_str(), O_RDONLY);
if (fd < 0) {
gui_msg(Msg(msg::kError, "error_opening_strerr=Error opening: '{1}' ({2})")(Filename)(strerror(errno)));
return false;
}
if (read(fd, &magic, sizeof(magic)) != sizeof(magic)) {
gui_msg(Msg(msg::kError, "error_opening_strerr=Error opening: '{1}' ({2})")(Filename)(strerror(errno)));
close(fd);
return false;
}
close(fd);
if (magic == SPARSE_HEADER_MAGIC)
return true;
return false;
}
bool TWPartition::Flash_Sparse_Image(const string& Filename) {
string Command;
gui_msg(Msg("flashing=Flashing {1}...")(Display_Name));
Command = "simg2img '" + Filename