1 /* 2 * Copyright (C) 2018 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 ANDROID_APEXD_APEX_FILE_H_ 18 #define ANDROID_APEXD_APEX_FILE_H_ 19 20 #include <memory> 21 #include <string> 22 #include <vector> 23 24 #include <android-base/result.h> 25 #include <libavb/libavb.h> 26 #include <ziparchive/zip_archive.h> 27 28 #include "apex_constants.h" 29 #include "apex_manifest.h" 30 31 namespace android { 32 namespace apex { 33 34 // Data needed to construct a valid VerityTable 35 struct ApexVerityData { 36 std::unique_ptr<AvbHashtreeDescriptor> desc; 37 std::string hash_algorithm; 38 std::string salt; 39 std::string root_digest; 40 }; 41 42 // Manages the content of an APEX package and provides utilities to navigate 43 // the content. 44 class ApexFile { 45 public: 46 static android::base::Result<ApexFile> Open(const std::string& path); 47 ApexFile() = delete; 48 ApexFile(ApexFile&&) = default; 49 GetPath()50 const std::string& GetPath() const { return apex_path_; } GetImageOffset()51 int32_t GetImageOffset() const { return image_offset_; } GetImageSize()52 size_t GetImageSize() const { return image_size_; } GetManifest()53 const ApexManifest& GetManifest() const { return manifest_; } GetBundledPublicKey()54 const std::string& GetBundledPublicKey() const { return apex_pubkey_; } IsBuiltin()55 bool IsBuiltin() const { return is_builtin_; } 56 android::base::Result<ApexVerityData> VerifyApexVerity() const; 57 android::base::Result<void> VerifyManifestMatches( 58 const std::string& mount_path) const; 59 60 private: ApexFile(const std::string & apex_path,int32_t image_offset,size_t image_size,ApexManifest manifest,const std::string & apex_pubkey,bool is_builtin)61 ApexFile(const std::string& apex_path, int32_t image_offset, 62 size_t image_size, ApexManifest manifest, 63 const std::string& apex_pubkey, bool is_builtin) 64 : apex_path_(apex_path), 65 image_offset_(image_offset), 66 image_size_(image_size), 67 manifest_(std::move(manifest)), 68 apex_pubkey_(apex_pubkey), 69 is_builtin_(is_builtin) {} 70 71 std::string apex_path_; 72 int32_t image_offset_; 73 size_t image_size_; 74 ApexManifest manifest_; 75 std::string apex_pubkey_; 76 bool is_builtin_; 77 }; 78 79 android::base::Result<std::vector<std::string>> FindApexes( 80 const std::vector<std::string>& paths); 81 android::base::Result<std::vector<std::string>> FindApexFilesByName( 82 const std::string& path); 83 84 bool isPathForBuiltinApexes(const std::string& path); 85 86 } // namespace apex 87 } // namespace android 88 89 #endif // ANDROID_APEXD_APEX_FILE_H_ 90