From ce8f83c48d200106ff61ad530c863b15c16949d9 Mon Sep 17 00:00:00 2001
From: bigbiff <bigbiff@teamw.in>
Date: Sat, 12 Dec 2015 18:30:21 -0500
Subject: ADB: Add adb backup for TWRP.

Functionality for client side to backup
tar and image streams over adbd to the client under backup.ab.

Using adb backup on the client side you can backup the partitions
TWRP knows about.

On the client side you can do the following:
adb backup -f <filename> --twrp <options> where options are
--compress: compress data
system: backup system
cache: backup cache
data: backup data
boot: backup boot
etc for each partition.

You can string multiple options,
i.e. adb backup -f <filename> --twrp --compress cache system data

adb backup in TWRP will take any option corresponding
to TWRP fstab partitions, e.g. efs boot as well.

If you do not specify the filename with the -f option,
adb will backup your data to a filename backup.ab on the client.
You can then rename the file and encrypt it with desktop tools.

If you don't want to use command line arguments:
adb backup --twrp

will bring up the gui and allow you to choose partitions
from the backup page.

To restore the backup use the following convention:
adb restore <filename>

Structures are used to store metadata in binary inside
of the file itself. If the metadata structure is modified,
update the adb version so that it will invalidate older
backups and not cause issues on restore. When restoring,
we currently do not support picking specific partitions.
It's all or nothing.

Change-Id: Idb92c37fc9801dc8d89ed2a4570e9d12e76facf8
---
 adbbu/libtwadbbu.hpp | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 adbbu/libtwadbbu.hpp

(limited to 'adbbu/libtwadbbu.hpp')

diff --git a/adbbu/libtwadbbu.hpp b/adbbu/libtwadbbu.hpp
new file mode 100644
index 000000000..bcd8b6aa3
--- /dev/null
+++ b/adbbu/libtwadbbu.hpp
@@ -0,0 +1,44 @@
+/*
+		Copyright 2013 to 2016 TeamWin
+		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 <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <string>
+#include <fstream>
+#include <sstream>
+
+#include "twadbstream.h"
+#include "twrpback.hpp"
+
+class twadbbu {
+public:
+	static bool Write_ADB_Stream_Header(uint64_t partition_count);                                 //Write ADB Stream Header to stream
+	static bool Write_ADB_Stream_Trailer();                                                        //Write ADB Stream Trailer to stream
+	static bool Write_TWFN(std::string Backup_FileName, uint64_t file_size, bool use_compression); //Write a tar image to stream
+	static bool Write_TWIMG(std::string Backup_FileName, uint64_t file_size);                      //Write a partition image to stream
+	static bool Write_TWEOF();                                                                     //Write ADB End-Of-File marker to stream
+	static bool Write_TWERROR();                                                                   //Write error message occurred to stream
+	static bool Write_TWENDADB();                                                                  //Write ADB End-Of-Stream command to stream
+};
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