1 /* 2 * Copyright (C) 2024 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 #include "apex_blocklist.h" 18 19 #include <android-base/file.h> 20 #include <google/protobuf/util/json_util.h> 21 22 #include <memory> 23 #include <string> 24 25 using android::base::Error; 26 using android::base::Result; 27 using ::apex::proto::ApexBlocklist; 28 29 namespace android::apex { 30 ParseBlocklist(const std::string & content)31Result<ApexBlocklist> ParseBlocklist(const std::string& content) { 32 ApexBlocklist apex_blocklist; 33 google::protobuf::util::JsonParseOptions options; 34 options.ignore_unknown_fields = true; 35 auto parse_result = google::protobuf::util::JsonStringToMessage( 36 content, &apex_blocklist, options); 37 if (!parse_result.ok()) { 38 return Error() << "Can't parse APEX blocklist: " << parse_result.message(); 39 } 40 41 for (const auto& apex : apex_blocklist.blocked_apex()) { 42 // Verifying required fields. 43 // name 44 if (apex.name().empty()) { 45 return Error() << "Missing required field \"name\" from APEX blocklist."; 46 } 47 48 // version 49 if (apex.version() <= 0) { 50 return Error() << "Missing positive value for field \"version\" " 51 "from APEX blocklist."; 52 } 53 } 54 55 return apex_blocklist; 56 } 57 ReadBlocklist(const std::string & path)58Result<ApexBlocklist> ReadBlocklist(const std::string& path) { 59 std::string content; 60 if (!android::base::ReadFileToString(path, &content)) { 61 return Error() << "Failed to read blocklist file: " << path; 62 } 63 return ParseBlocklist(content); 64 } 65 66 } // namespace android::apex 67