1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef _APPLYPATCH_H 18 #define _APPLYPATCH_H 19 20 #include <stdint.h> 21 22 #include <functional> 23 #include <memory> 24 #include <string> 25 #include <vector> 26 27 #include <openssl/sha.h> 28 29 // Forward declaration to avoid including "edify/expr.h" in the header. 30 struct Value; 31 32 struct FileContents { 33 uint8_t sha1[SHA_DIGEST_LENGTH]; 34 std::vector<unsigned char> data; 35 }; 36 37 using SinkFn = std::function<size_t(const unsigned char*, size_t)>; 38 39 // applypatch.cpp 40 41 int ShowLicenses(); 42 size_t FreeSpaceForFile(const char* filename); 43 int CacheSizeCheck(size_t bytes); 44 int ParseSha1(const char* str, uint8_t* digest); 45 46 int applypatch(const char* source_filename, 47 const char* target_filename, 48 const char* target_sha1_str, 49 size_t target_size, 50 const std::vector<std::string>& patch_sha1_str, 51 const std::vector<std::unique_ptr<Value>>& patch_data, 52 const Value* bonus_data); 53 int applypatch_check(const char* filename, 54 const std::vector<std::string>& patch_sha1_str); 55 int applypatch_flash(const char* source_filename, const char* target_filename, 56 const char* target_sha1_str, size_t target_size); 57 58 int LoadFileContents(const char* filename, FileContents* file); 59 int SaveFileContents(const char* filename, const FileContents* file); 60 61 // bspatch.cpp 62 63 void ShowBSDiffLicense(); 64 65 // Applies the bsdiff-patch given in 'patch' (from offset 'patch_offset' to the end) to the source 66 // data given by (old_data, old_size). Writes the patched output through the given 'sink', and 67 // updates the SHA-1 context with the output data. Returns 0 on success. 68 int ApplyBSDiffPatch(const unsigned char* old_data, size_t old_size, const Value& patch, 69 size_t patch_offset, SinkFn sink, SHA_CTX* ctx); 70 71 // imgpatch.cpp 72 73 // Applies the imgdiff-patch given in 'patch' to the source data given by (old_data, old_size), with 74 // the optional bonus data. Writes the patched output through the given 'sink', and updates the 75 // SHA-1 context with the output data. Returns 0 on success. 76 int ApplyImagePatch(const unsigned char* old_data, size_t old_size, const Value& patch, SinkFn sink, 77 SHA_CTX* ctx, const Value* bonus_data); 78 79 // freecache.cpp 80 81 int MakeFreeSpaceOnCache(size_t bytes_needed); 82 83 #endif 84
