8b0b0f1f02
As they're accepting the SinkFn callback, it makes more sense to leave the work to their callers. Test: mmma -j bootable/recovery Test: Run recovery_component_test on marlin. Test: No other active user of the two functions. Change-Id: I8d67b38ce037925442296f136b483e0c71983777
87 lines
3.8 KiB
C++
87 lines
3.8 KiB
C++
/*
|
|
* Copyright (C) 2008 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
// This file is a nearly line-for-line copy of bspatch.c from the
|
|
// bsdiff-4.3 distribution; the primary differences being how the
|
|
// input and output data are read and the error handling. Running
|
|
// applypatch with the -l option will display the bsdiff license
|
|
// notice.
|
|
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <string>
|
|
|
|
#include <android-base/logging.h>
|
|
#include <bsdiff/bspatch.h>
|
|
#include <openssl/sha.h>
|
|
|
|
#include "applypatch/applypatch.h"
|
|
#include "edify/expr.h"
|
|
#include "otautil/print_sha1.h"
|
|
|
|
void ShowBSDiffLicense() {
|
|
puts("The bsdiff library used herein is:\n"
|
|
"\n"
|
|
"Copyright 2003-2005 Colin Percival\n"
|
|
"All rights reserved\n"
|
|
"\n"
|
|
"Redistribution and use in source and binary forms, with or without\n"
|
|
"modification, are permitted providing that the following conditions\n"
|
|
"are met:\n"
|
|
"1. Redistributions of source code must retain the above copyright\n"
|
|
" notice, this list of conditions and the following disclaimer.\n"
|
|
"2. Redistributions in binary form must reproduce the above copyright\n"
|
|
" notice, this list of conditions and the following disclaimer in the\n"
|
|
" documentation and/or other materials provided with the distribution.\n"
|
|
"\n"
|
|
"THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR\n"
|
|
"IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED\n"
|
|
"WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\n"
|
|
"ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY\n"
|
|
"DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\n"
|
|
"DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\n"
|
|
"OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\n"
|
|
"HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,\n"
|
|
"STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING\n"
|
|
"IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\n"
|
|
"POSSIBILITY OF SUCH DAMAGE.\n"
|
|
"\n------------------\n\n"
|
|
"This program uses Julian R Seward's \"libbzip2\" library, available\n"
|
|
"from http://www.bzip.org/.\n"
|
|
);
|
|
}
|
|
|
|
int ApplyBSDiffPatch(const unsigned char* old_data, size_t old_size, const Value& patch,
|
|
size_t patch_offset, SinkFn sink) {
|
|
CHECK_LE(patch_offset, patch.data.size());
|
|
|
|
int result = bsdiff::bspatch(old_data, old_size,
|
|
reinterpret_cast<const uint8_t*>(&patch.data[patch_offset]),
|
|
patch.data.size() - patch_offset, sink);
|
|
if (result != 0) {
|
|
LOG(ERROR) << "bspatch failed, result: " << result;
|
|
// print SHA1 of the patch in the case of a data error.
|
|
if (result == 2) {
|
|
uint8_t digest[SHA_DIGEST_LENGTH];
|
|
SHA1(reinterpret_cast<const uint8_t*>(patch.data.data() + patch_offset),
|
|
patch.data.size() - patch_offset, digest);
|
|
std::string patch_sha1 = print_sha1(digest);
|
|
LOG(ERROR) << "Patch may be corrupted, offset: " << patch_offset << ", SHA1: " << patch_sha1;
|
|
}
|
|
}
|
|
return result;
|
|
}
|