1 /* 2 * Copyright 2019 Google Inc. 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 #include "version_handlers_builder.hpp" 17 18 #include "file_handler.hpp" 19 #include "fs.hpp" 20 #include "skip_action.hpp" 21 22 #include <nlohmann/json.hpp> 23 24 #include <algorithm> 25 #include <cstdio> 26 #include <exception> 27 #include <fstream> 28 #include <memory> 29 #include <regex> 30 #include <string> 31 #include <vector> 32 33 namespace ipmi_flash 34 { 35 36 std::vector<HandlerConfig<VersionBlobHandler::ActionPack>> 37 VersionHandlersBuilder::buildHandlerFromJson(const nlohmann::json& data) 38 { 39 std::vector<HandlerConfig<VersionBlobHandler::ActionPack>> handlers; 40 41 for (const auto& item : data) 42 { 43 try 44 { 45 HandlerConfig<VersionBlobHandler::ActionPack> output; 46 47 /* at() throws an exception when the key is not present. */ 48 item.at("blob").get_to(output.blobId); 49 50 /* name must be: /flash/... or /version/...*/ 51 std::regex regexpr("^\\/(?:flash|version)\\/(.+)"); 52 std::smatch matches; 53 if (!std::regex_search(output.blobId, matches, regexpr)) 54 { 55 throw std::runtime_error( 56 "Invalid blob name: '" + output.blobId + 57 "' must start with /flash/ or /version/"); 58 } 59 output.blobId = "/version/" + matches[1].str(); 60 /* version is required. */ 61 const auto& v = item.at("version"); 62 /* version must have handler */ 63 const auto& h = v.at("handler"); 64 65 const std::string& handlerType = h.at("type"); 66 if (handlerType == "file") 67 { 68 const auto& path = h.at("path"); 69 output.handler = std::make_unique<FileHandler>(path); 70 } 71 else 72 { 73 throw std::runtime_error("Invalid handler type: " + 74 handlerType); 75 } 76 77 /* actions are required (presently). */ 78 const auto& a = v.at("actions"); 79 auto pack = std::make_unique<VersionBlobHandler::ActionPack>(); 80 81 /* to make an action optional, assign type "skip" */ 82 const auto& onOpen = a.at("open"); 83 const std::string& onOpenType = onOpen.at("type"); 84 if (onOpenType == "systemd") 85 { 86 pack->onOpen = std::move(buildSystemd(onOpen)); 87 } 88 else if (onOpenType == "skip") 89 { 90 pack->onOpen = SkipAction::CreateSkipAction(); 91 } 92 else 93 { 94 throw std::runtime_error("Invalid preparation type: " + 95 onOpenType); 96 } 97 98 output.actions = std::move(pack); 99 handlers.push_back(std::move(output)); 100 } 101 catch (const std::exception& e) 102 { 103 /* TODO: Once phosphor-logging supports unit-test injection, fix 104 * this to log. 105 */ 106 std::fprintf(stderr, 107 "Excepted building HandlerConfig from json: %s\n", 108 e.what()); 109 } 110 } 111 112 return handlers; 113 } 114 115 } // namespace ipmi_flash 116