1512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker/* 2512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * Copyright (C) 2008 The Android Open Source Project 3512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * 4512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * Licensed under the Apache License, Version 2.0 (the "License"); 5512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * you may not use this file except in compliance with the License. 6512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * You may obtain a copy of the License at 7512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * 8512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * http://www.apache.org/licenses/LICENSE-2.0 9512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * 10512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * Unless required by applicable law or agreed to in writing, software 11512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * distributed under the License is distributed on an "AS IS" BASIS, 12512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * See the License for the specific language governing permissions and 14512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker * limitations under the License. 15512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker */ 16512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker 17512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker#ifndef _APPLYPATCH_H 18512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker#define _APPLYPATCH_H 19512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker 20512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker#include <sys/stat.h> 21512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker#include "mincrypt/sha.h" 22c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongker#include "edify/expr.h" 23512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker 24512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongkertypedef struct _Patch { 25512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker uint8_t sha1[SHA_DIGEST_SIZE]; 26512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker const char* patch_filename; 27512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker} Patch; 28512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker 29512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongkertypedef struct _FileContents { 30512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker uint8_t sha1[SHA_DIGEST_SIZE]; 31512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker unsigned char* data; 32512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker ssize_t size; 33512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker struct stat st; 34512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker} FileContents; 35512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker 36512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker// When there isn't enough room on the target filesystem to hold the 37512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker// patched version of the file, we copy the original here and delete 38512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker// it to free up space. If the expected source file doesn't exist, or 39512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker// is corrupted, we look to see if this file contains the bits we want 40512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker// and use it as the source instead. 41512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker#define CACHE_TEMP_SOURCE "/cache/saved.file" 42512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker 43bc7ffeda98a861e346c30c771d3258030f7fcf21Doug Zongkertypedef ssize_t (*SinkFn)(const unsigned char*, ssize_t, void*); 44512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker 45512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker// applypatch.c 46c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongkerint ShowLicenses(); 47512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongkersize_t FreeSpaceForFile(const char* filename); 48c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongkerint CacheSizeCheck(size_t bytes); 49c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongkerint ParseSha1(const char* str, uint8_t* digest); 50c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongker 51c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongkerint applypatch(const char* source_filename, 52c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongker const char* target_filename, 53c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongker const char* target_sha1_str, 54c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongker size_t target_size, 55c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongker int num_patches, 56c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongker char** const patch_sha1_str, 57a3ccba6d314cb29b02d1dbda9a71427b11da936dDoug Zongker Value** patch_data, 58a3ccba6d314cb29b02d1dbda9a71427b11da936dDoug Zongker Value* bonus_data); 59c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongkerint applypatch_check(const char* filename, 60c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongker int num_patches, 61c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongker char** const patch_sha1_str); 62512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker 63a1bc148c7c81f886426c253f2ea7beb0f301f6b0Doug Zongkerint LoadFileContents(const char* filename, FileContents* file); 641c43c9741bc4d9f62f2e3262cea1309890d1bbd2Doug Zongkerint SaveFileContents(const char* filename, const FileContents* file); 65512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongkervoid FreeFileContents(FileContents* file); 66044a0b4d49a11edfa13471ce20914b0514eb7e0eDoug Zongkerint FindMatchingPatch(uint8_t* sha1, char* const * const patch_sha1_str, 67db314d69f023d2a6c8956073aa9d283e20b280efHristo Bojinov int num_patches); 68512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker 69512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker// bsdiff.c 70512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongkervoid ShowBSDiffLicense(); 71512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongkerint ApplyBSDiffPatch(const unsigned char* old_data, ssize_t old_size, 72c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongker const Value* patch, ssize_t patch_offset, 73512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker SinkFn sink, void* token, SHA_CTX* ctx); 74512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongkerint ApplyBSDiffPatchMem(const unsigned char* old_data, ssize_t old_size, 75c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongker const Value* patch, ssize_t patch_offset, 76512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker unsigned char** new_data, ssize_t* new_size); 77512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker 78512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker// imgpatch.c 79512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongkerint ApplyImagePatch(const unsigned char* old_data, ssize_t old_size, 80c4351c791052ad529a4e83c600b1aa6e6420ea86Doug Zongker const Value* patch, 81a3ccba6d314cb29b02d1dbda9a71427b11da936dDoug Zongker SinkFn sink, void* token, SHA_CTX* ctx, 82a3ccba6d314cb29b02d1dbda9a71427b11da936dDoug Zongker const Value* bonus_data); 83512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker 84512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker// freecache.c 85512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongkerint MakeFreeSpaceOnCache(size_t bytes_needed); 86512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker 87512536a54a1a211a9f582e76cbf12850dc7d5466Doug Zongker#endif 88