1 /*
2 * Copyright (C) 2020 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 #define LOG_TAG "sysprop_type_checker_main"
18
19 #include <android-base/file.h>
20 #include <android-base/logging.h>
21 #include <cstdio>
22 #include <cstdlib>
23 #include <string>
24 #include <vector>
25
26 #include <getopt.h>
27
28 #include "Common.h"
29 #include "TypeChecker.h"
30
31 using android::base::Result;
32 using android::properties::ParsePropertyInfoFile;
33 using android::properties::PropertyInfoEntry;
34
35 namespace {
36
37 struct Arguments {
38 std::vector<std::string> api_paths;
39 std::vector<std::string> context_paths;
40 };
41
PrintUsage(const char * exe_name)42 [[noreturn]] void PrintUsage(const char* exe_name) {
43 std::printf("Usage: %s [--api api_path]... [--context context_path]...\n",
44 exe_name);
45 std::exit(EXIT_FAILURE);
46 }
47
ParseArgs(int argc,char * argv[])48 Result<Arguments> ParseArgs(int argc, char* argv[]) {
49 Arguments ret;
50 for (;;) {
51 static struct option long_options[] = {
52 {"api", required_argument, 0, 'a'},
53 {"context", required_argument, 0, 'c'},
54 };
55
56 int opt = getopt_long_only(argc, argv, "", long_options, nullptr);
57 if (opt == -1) break;
58
59 switch (opt) {
60 case 'a':
61 ret.api_paths.emplace_back(optarg);
62 break;
63 case 'c':
64 ret.context_paths.emplace_back(optarg);
65 break;
66 default:
67 PrintUsage(argv[0]);
68 }
69 }
70
71 if (optind < argc) {
72 return Errorf("Unknown arguments");
73 }
74
75 if (ret.api_paths.empty() || ret.context_paths.empty()) {
76 return Errorf("both api files and context files must be specified");
77 }
78
79 return ret;
80 }
81 } // namespace
82
main(int argc,char * argv[])83 int main(int argc, char* argv[]) {
84 Arguments args;
85 if (auto res = ParseArgs(argc, argv); res.ok()) {
86 args = std::move(*res);
87 } else {
88 LOG(ERROR) << argv[0] << ": " << res.error();
89 PrintUsage(argv[0]);
90 }
91
92 sysprop::SyspropLibraryApis api;
93
94 // read all api files and merge them into one SyspropLibraryApis
95 for (auto& api_path : args.api_paths) {
96 if (auto res = ParseApiFile(api_path); res.ok()) {
97 api.MergeFrom(*res);
98 } else {
99 LOG(FATAL) << "parsing sysprop_library API file " << api_path
100 << " failed: " << res.error();
101 }
102 }
103
104 std::vector<PropertyInfoEntry> entries;
105
106 // read all context files and parse entries
107 for (auto& context_path : args.context_paths) {
108 std::string contents;
109 if (!android::base::ReadFileToString(context_path, &contents)) {
110 LOG(FATAL) << "Could not read properties from '" << context_path << "'";
111 }
112
113 std::vector<std::string> errors;
114 ParsePropertyInfoFile(contents, true, &entries, &errors);
115 if (!errors.empty()) {
116 for (const auto& error : errors) {
117 LOG(ERROR) << "Could not read line from '" << context_path
118 << "': " << error;
119 }
120 LOG(FATAL) << "Could not parse properties from '" << context_path << "'";
121 }
122 }
123
124 if (auto res = CheckPropertyTypes(api, entries); !res.ok()) {
125 LOG(ERROR) << "sysprop_library type check failed:\n\n" << res.error();
126 return EXIT_FAILURE;
127 }
128 }
129