blob: dfe9cc9f1e71ad0e1598410b53912861a0f31ada [file] [log] [blame]
/*
Copyright 2013 to 2020 TeamWin
This file is part of TWRP/TeamWin Recovery Project.
TWRP is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
TWRP is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with TWRP. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string>
#include "data.hpp"
#include "partitions.hpp"
#include "twrp-functions.hpp"
#include "twrpRepacker.hpp"
#include "twcommon.h"
#include "variables.h"
#include "gui/gui.hpp"
bool twrpRepacker::Prepare_Empty_Folder(const std::string& Folder) {
if (TWFunc::Path_Exists(Folder))
TWFunc::removeDir(Folder, false);
return TWFunc::Recursive_Mkdir(Folder);
}
bool twrpRepacker::Backup_Image_For_Repack(TWPartition* Part, const std::string& Temp_Folder_Destination,
const bool Create_Backup, const std::string& Backup_Name) {
if (!Part) {
LOGERR("Partition was null!\n");
return false;
}
if (!Prepare_Empty_Folder(Temp_Folder_Destination))
return false;
std::string target_image = Temp_Folder_Destination + "boot.img";
PartitionSettings part_settings;
part_settings.Part = Part;
if (Create_Backup) {
if (PartitionManager.Check_Backup_Name(Backup_Name, true, false) != 0)
return false;
DataManager::GetValue(TW_BACKUPS_FOLDER_VAR, part_settings.Backup_Folder);
part_settings.Backup_Folder = part_settings.Backup_Folder + "/" + TWFunc::Get_Current_Date() + " " + Backup_Name + "/";
if (!TWFunc::Recursive_Mkdir(part_settings.Backup_Folder))
return false;
} else
part_settings.Backup_Folder = Temp_Folder_Destination;
part_settings.adbbackup = false;
part_settings.generate_digest = false;
part_settings.generate_md5 = false;
part_settings.PM_Method = PM_BACKUP;
part_settings.progress = NULL;
pid_t not_a_pid = 0;
if (!Part->Backup(&part_settings, &not_a_pid))
return false;
std::string backed_up_image = part_settings.Backup_Folder;
backed_up_image += Part->Get_Backup_FileName();
target_image = Temp_Folder_Destination + "boot.img";
if (Create_Backup) {
std::string source = part_settings.Backup_Folder + Part->Get_Backup_FileName();
if (TWFunc::copy_file(source, target_image, 0644) != 0) {
LOGERR("Failed to copy backup file '%s' to temp folder target '%s'\n", source.c_str(), target_image.c_str());
return false;
}
} else {
if (rename(backed_up_image.c_str(), target_image.c_str()) != 0) {
LOGERR("Failed to rename '%s' to '%s'\n", backed_up_image.c_str(), target_image.c_str());
return false;
}
}
original_ramdisk_format = Unpack_Image(target_image, Temp_Folder_Destination, false, false);
return !original_ramdisk_format.empty();
}
std::string twrpRepacker::Unpack_Image(const std::string& Source_Path, const std::string& Temp_Folder_Destination,
const bool Copy_Source, const bool Create_Destination) {
std::string txt_to_find = "RAMDISK_FMT";
if (Create_Destination) {
if (!Prepare_Empty_Folder(Temp_Folder_Destination))
return std::string();
}
if (Copy_Source) {
std::string destination = Temp_Folder_Destination + "/boot.img";
if (TWFunc::copy_file(Source_Path, destination, 0644))
return std::string();
}
std::string command = "cd " + Temp_Folder_Destination + " && /sbin/magiskboot unpack -h ";
command = command + "'" + Source_Path +"'";
std::string magisk_unpack_output;
int ret;
if ((ret = TWFunc::Exec_Cmd(command, magisk_unpack_output, true)) != 0) {
LOGINFO("Error unpacking %s, ret: %d!\n", Source_Path.c_str(), ret);
gui_msg(Msg(msg::kError, "unpack_error=Error unpacking image."));
return std::string();
}
size_t pos = magisk_unpack_output.find(txt_to_find) + txt_to_find.size();
std::string ramdisk_format = magisk_unpack_output.substr(pos, magisk_unpack_output.size() - 1);
ramdisk_format.erase(std::remove(ramdisk_format.begin(), ramdisk_format.end(), '['), ramdisk_format.end());
ramdisk_format.erase(std::remove(ramdisk_format.begin(), ramdisk_format.end(), ']'), ramdisk_format.end());
ramdisk_format.erase(std::remove(ramdisk_format.begin(), ramdisk_format.end(), ' '), ramdisk_format.end());
ramdisk_format.erase(std::remove(ramdisk_format.begin(), ramdisk_format.end(), '\n'), ramdisk_format.end());
return ramdisk_format;
}
bool twrpRepacker::Repack_Image_And_Flash(const std::string& Target_Image, const struct Repack_Options_struct& Repack_Options) {
bool recompress = false;
if (!TWFunc::Path_Exists("/sbin/magiskboot")) {
LOGERR("Image repacking tool not present in this TWRP build!");
return false;
}
DataManager::SetProgress(0);
PartitionManager.Update_System_Details();
TWPartition* part = PartitionManager.Find_Partition_By_Path("/boot");
if (part)
gui_msg(Msg("unpacking_image=Unpacking {1}...")(part->Get_Display_Name()));
else {
gui_msg(Msg(msg::kError, "unable_to_locate=Unable to locate {1}.")("/boot"));
return false;
}
if (!Backup_Image_For_Repack(part, REPACK_ORIG_DIR, Repack_Options.Backup_First, gui_lookup("repack", "Repack")))
return false;
DataManager::SetProgress(.25);
if (Repack_Options.Type == REPLACE_RAMDISK_UNPACKED) {
if (!Prepare_Empty_Folder(REPACK_NEW_DIR))
return false;
image_ramdisk_format = "gzip";
} else {
gui_msg(Msg("unpacking_image=Unpacking {1}...")(Target_Image));
image_ramdisk_format = Unpack_Image(Target_Image, REPACK_NEW_DIR, true);
}
if (image_ramdisk_format.empty())
return false;
DataManager::SetProgress(.5);
gui_msg(Msg("repacking_image=Repacking {1}...")(part->Get_Display_Name()));
std::string path = REPACK_NEW_DIR;
if (Repack_Options.Type == REPLACE_KERNEL) {
// When we replace the kernel, what we really do is copy the boot partition ramdisk into the new image's folder
if (TWFunc::copy_file(REPACK_ORIG_DIR "ramdisk.cpio", REPACK_NEW_DIR "ramdisk.cpio", 0644)) {
LOGERR("Failed to copy ramdisk\n");
return false;
}
} else if (Repack_Options.Type == REPLACE_RAMDISK_UNPACKED) {
if (TWFunc::copy_file(Target_Image, REPACK_ORIG_DIR "ramdisk.cpio", 0644)) {
LOGERR("Failed to copy ramdisk\n");
return false;
}
if (TWFunc::copy_file(Target_Image, REPACK_NEW_DIR "ramdisk.cpio", 0644)) {
LOGERR("Failed to copy ramdisk\n");
return false;
}
path = REPACK_ORIG_DIR;
} else if (Repack_Options.Type == REPLACE_RAMDISK) {
// Repack the ramdisk
if (TWFunc::copy_file(REPACK_NEW_DIR "ramdisk.cpio", REPACK_ORIG_DIR "ramdisk.cpio", 0644)) {
LOGERR("Failed to copy ramdisk\n");
return false;
}
path = REPACK_ORIG_DIR;
} else {
LOGERR("Invalid repacking options specified\n");
return false;
}
if (Repack_Options.Disable_Verity)
LOGERR("Disabling verity is not implemented yet\n");
if (Repack_Options.Disable_Force_Encrypt)
LOGERR("Disabling force encrypt is not implemented yet\n");
std::string command = "cd " + path + " && /sbin/magiskboot repack ";
if (original_ramdisk_format != image_ramdisk_format) {
recompress = true;
}
command += path + "boot.img";
std::string orig_compressed_image(REPACK_ORIG_DIR);
orig_compressed_image += "ramdisk.cpio";
std::string copy_compressed_image(REPACK_ORIG_DIR);
copy_compressed_image += "ramdisk-1.cpio";
if (recompress) {
std::string decompress_cmd = "/sbin/magiskboot decompress " + orig_compressed_image + " " + copy_compressed_image;
if (TWFunc::Exec_Cmd(decompress_cmd) != 0) {
gui_msg(Msg(msg::kError, "repack_error=Error repacking image."));
return false;
}
std::rename(copy_compressed_image.c_str(), orig_compressed_image.c_str());
}
if (TWFunc::Exec_Cmd(command) != 0) {
gui_msg(Msg(msg::kError, "repack_error=Error repacking image."));
return false;
}
DataManager::SetProgress(.75);
std::string file = "new-boot.img";
DataManager::SetValue("tw_flash_partition", "/boot;");
if (!PartitionManager.Flash_Image(path, file)) {
LOGINFO("Error flashing new image\n");
return false;
}
DataManager::SetProgress(1);
TWFunc::removeDir(REPACK_ORIG_DIR, false);
if (part->Is_SlotSelect()) { if (Repack_Options.Type == REPLACE_RAMDISK || Repack_Options.Type == REPLACE_RAMDISK_UNPACKED) {
LOGINFO("Switching slots to flash ramdisk to both partitions\n");
string Current_Slot = PartitionManager.Get_Active_Slot_Display();
if (Current_Slot == "A")
PartitionManager.Override_Active_Slot("B");
else
PartitionManager.Override_Active_Slot("A");
DataManager::SetProgress(.25);
if (!Backup_Image_For_Repack(part, REPACK_ORIG_DIR, Repack_Options.Backup_First, gui_lookup("repack", "Repack")))
return false;
if (TWFunc::copy_file(REPACK_NEW_DIR "ramdisk.cpio", REPACK_ORIG_DIR "ramdisk.cpio", 0644)) {
LOGERR("Failed to copy ramdisk\n");
return false;
}
path = REPACK_ORIG_DIR;
std::string command = "cd " + path + " && /sbin/magiskboot repack ";
if (original_ramdisk_format != image_ramdisk_format) {
recompress = true;
}
command += path + "boot.img";
if (recompress) {
std::string decompress_cmd = "/sbin/magiskboot decompress " + orig_compressed_image + " " + copy_compressed_image;
if (TWFunc::Exec_Cmd(decompress_cmd) != 0) {
gui_msg(Msg(msg::kError, "repack_error=Error repacking image."));
return false;
}
std::rename(copy_compressed_image.c_str(), orig_compressed_image.c_str());
}
if (TWFunc::Exec_Cmd(command) != 0) {
gui_msg(Msg(msg::kError, "repack_error=Error repacking image."));
return false;
}
if (TWFunc::Exec_Cmd(command) != 0) {
gui_msg(Msg(msg::kError, "repack_error=Error repacking image."));
return false;
}
DataManager::SetProgress(.75);
std::string file = "new-boot.img";
DataManager::SetValue("tw_flash_partition", "/boot;");
if (!PartitionManager.Flash_Image(path, file)) {
LOGINFO("Error flashing new image\n");
return false;
}
DataManager::SetProgress(1);
TWFunc::removeDir(REPACK_ORIG_DIR, false);
}}
TWFunc::removeDir(REPACK_NEW_DIR, false);
gui_msg(Msg(msg::kWarning, "repack_overwrite_warning=If device was previously rooted, then root has been overwritten and will need to be reinstalled."));
return true;
}
bool twrpRepacker::Flash_Current_Twrp() {
if (!TWFunc::Path_Exists("/ramdisk-files.txt")) {
LOGERR("can not find ramdisk-files.txt");
return false;
}
Repack_Options_struct Repack_Options;
Repack_Options.Disable_Verity = false;
Repack_Options.Disable_Force_Encrypt = false;
Repack_Options.Type = REPLACE_RAMDISK_UNPACKED;
Repack_Options.Backup_First = DataManager::GetIntValue("tw_repack_backup_first") != 0;
std::string verifyfiles = "cd / && sha256sum -c ramdisk-files.sha256sum";
if (TWFunc::Exec_Cmd(verifyfiles) != 0) {
gui_msg(Msg(msg::kError, "modified_ramdisk_error=ramdisk files have been modified, unable to create ramdisk to flash, fastboot boot twrp and try this option again or use the Install Recovery Ramdisk option."));
return false;
}
std::string command = "cd / && /sbin/cpio -H newc -o < ramdisk-files.txt > /tmp/currentramdisk.cpio && /sbin/gzip -f /tmp/currentramdisk.cpio";
if (TWFunc::Exec_Cmd(command) != 0) {
gui_msg(Msg(msg::kError, "create_ramdisk_error=failed to create ramdisk to flash."));
return false;
}
if (!Repack_Image_And_Flash("/tmp/currentramdisk.cpio.gz", Repack_Options))
return false;
else
return true;
}