From 485b63702c312bf47a1fd4821fde7dcade41e09d Mon Sep 17 00:00:00 2001 From: Tao Bao Date: Tue, 23 Jun 2015 23:23:33 -0700 Subject: recovery: Switch applypatch/ and updater/ to cpp. Mostly trivial changes to make cpp compiler happy. Change-Id: I1b0481465c67c3bbca35a839d0764190d84ff34e (cherry picked from commit ba9a42aa7e10686de186636fe9fecbf8c4cc7c19) --- applypatch/imgpatch.c | 234 -------------------------------------------------- 1 file changed, 234 deletions(-) delete mode 100644 applypatch/imgpatch.c (limited to 'applypatch/imgpatch.c') diff --git a/applypatch/imgpatch.c b/applypatch/imgpatch.c deleted file mode 100644 index 09b0a7397..000000000 --- a/applypatch/imgpatch.c +++ /dev/null @@ -1,234 +0,0 @@ -/* - * Copyright (C) 2009 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. - */ - -// See imgdiff.c in this directory for a description of the patch file -// format. - -#include -#include -#include -#include -#include -#include -#include - -#include "zlib.h" -#include "mincrypt/sha.h" -#include "applypatch.h" -#include "imgdiff.h" -#include "utils.h" - -/* - * Apply the patch given in 'patch_filename' to the source data given - * by (old_data, old_size). Write the patched output to the 'output' - * file, and update the SHA context with the output data as well. - * Return 0 on success. - */ -int ApplyImagePatch(const unsigned char* old_data, ssize_t old_size __unused, - const Value* patch, - SinkFn sink, void* token, SHA_CTX* ctx, - const Value* bonus_data) { - ssize_t pos = 12; - char* header = patch->data; - if (patch->size < 12) { - printf("patch too short to contain header\n"); - return -1; - } - - // IMGDIFF2 uses CHUNK_NORMAL, CHUNK_DEFLATE, and CHUNK_RAW. - // (IMGDIFF1, which is no longer supported, used CHUNK_NORMAL and - // CHUNK_GZIP.) - if (memcmp(header, "IMGDIFF2", 8) != 0) { - printf("corrupt patch file header (magic number)\n"); - return -1; - } - - int num_chunks = Read4(header+8); - - int i; - for (i = 0; i < num_chunks; ++i) { - // each chunk's header record starts with 4 bytes. - if (pos + 4 > patch->size) { - printf("failed to read chunk %d record\n", i); - return -1; - } - int type = Read4(patch->data + pos); - pos += 4; - - if (type == CHUNK_NORMAL) { - char* normal_header = patch->data + pos; - pos += 24; - if (pos > patch->size) { - printf("failed to read chunk %d normal header data\n", i); - return -1; - } - - size_t src_start = Read8(normal_header); - size_t src_len = Read8(normal_header+8); - size_t patch_offset = Read8(normal_header+16); - - ApplyBSDiffPatch(old_data + src_start, src_len, - patch, patch_offset, sink, token, ctx); - } else if (type == CHUNK_RAW) { - char* raw_header = patch->data + pos; - pos += 4; - if (pos > patch->size) { - printf("failed to read chunk %d raw header data\n", i); - return -1; - } - - ssize_t data_len = Read4(raw_header); - - if (pos + data_len > patch->size) { - printf("failed to read chunk %d raw data\n", i); - return -1; - } - if (ctx) SHA_update(ctx, patch->data + pos, data_len); - if (sink((unsigned char*)patch->data + pos, - data_len, token) != data_len) { - printf("failed to write chunk %d raw data\n", i); - return -1; - } - pos += data_len; - } else if (type == CHUNK_DEFLATE) { - // deflate chunks have an additional 60 bytes in their chunk header. - char* deflate_header = patch->data + pos; - pos += 60; - if (pos > patch->size) { - printf("failed to read chunk %d deflate header data\n", i); - return -1; - } - - size_t src_start = Read8(deflate_header); - size_t src_len = Read8(deflate_header+8); - size_t patch_offset = Read8(deflate_header+16); - size_t expanded_len = Read8(deflate_header+24); - size_t target_len = Read8(deflate_header+32); - int level = Read4(deflate_header+40); - int method = Read4(deflate_header+44); - int windowBits = Read4(deflate_header+48); - int memLevel = Read4(deflate_header+52); - int strategy = Read4(deflate_header+56); - - // Decompress the source data; the chunk header tells us exactly - // how big we expect it to be when decompressed. - - // Note: expanded_len will include the bonus data size if - // the patch was constructed with bonus data. The - // deflation will come up 'bonus_size' bytes short; these - // must be appended from the bonus_data value. - size_t bonus_size = (i == 1 && bonus_data != NULL) ? bonus_data->size : 0; - - unsigned char* expanded_source = malloc(expanded_len); - if (expanded_source == NULL) { - printf("failed to allocate %zu bytes for expanded_source\n", - expanded_len); - return -1; - } - - z_stream strm; - strm.zalloc = Z_NULL; - strm.zfree = Z_NULL; - strm.opaque = Z_NULL; - strm.avail_in = src_len; - strm.next_in = (unsigned char*)(old_data + src_start); - strm.avail_out = expanded_len; - strm.next_out = expanded_source; - - int ret; - ret = inflateInit2(&strm, -15); - if (ret != Z_OK) { - printf("failed to init source inflation: %d\n", ret); - return -1; - } - - // Because we've provided enough room to accommodate the output - // data, we expect one call to inflate() to suffice. - ret = inflate(&strm, Z_SYNC_FLUSH); - if (ret != Z_STREAM_END) { - printf("source inflation returned %d\n", ret); - return -1; - } - // We should have filled the output buffer exactly, except - // for the bonus_size. - if (strm.avail_out != bonus_size) { - printf("source inflation short by %zu bytes\n", strm.avail_out-bonus_size); - return -1; - } - inflateEnd(&strm); - - if (bonus_size) { - memcpy(expanded_source + (expanded_len - bonus_size), - bonus_data->data, bonus_size); - } - - // Next, apply the bsdiff patch (in memory) to the uncompressed - // data. - unsigned char* uncompressed_target_data; - ssize_t uncompressed_target_size; - if (ApplyBSDiffPatchMem(expanded_source, expanded_len, - patch, patch_offset, - &uncompressed_target_data, - &uncompressed_target_size) != 0) { - return -1; - } - - // Now compress the target data and append it to the output. - - // we're done with the expanded_source data buffer, so we'll - // reuse that memory to receive the output of deflate. - unsigned char* temp_data = expanded_source; - ssize_t temp_size = expanded_len; - if (temp_size < 32768) { - // ... unless the buffer is too small, in which case we'll - // allocate a fresh one. - free(temp_data); - temp_data = malloc(32768); - temp_size = 32768; - } - - // now the deflate stream - strm.zalloc = Z_NULL; - strm.zfree = Z_NULL; - strm.opaque = Z_NULL; - strm.avail_in = uncompressed_target_size; - strm.next_in = uncompressed_target_data; - ret = deflateInit2(&strm, level, method, windowBits, memLevel, strategy); - do { - strm.avail_out = temp_size; - strm.next_out = temp_data; - ret = deflate(&strm, Z_FINISH); - ssize_t have = temp_size - strm.avail_out; - - if (sink(temp_data, have, token) != have) { - printf("failed to write %ld compressed bytes to output\n", - (long)have); - return -1; - } - if (ctx) SHA_update(ctx, temp_data, have); - } while (ret != Z_STREAM_END); - deflateEnd(&strm); - - free(temp_data); - free(uncompressed_target_data); - } else { - printf("patch chunk %d is unknown type %d\n", i, type); - return -1; - } - } - - return 0; -} -- cgit v1.2.3