summaryrefslogtreecommitdiffstats
blob: 1354d1984874f905eb9f4cead9a032735baf4a5e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <getopt.h>
#include <stdlib.h>
#include <unistd.h>

#include <fstream>
#include <iostream>
#include <unordered_map>
#include <sstream>
#include <string>

#include <vintf/KernelConfigParser.h>
#include <vintf/parse_string.h>
#include <vintf/parse_xml.h>

#define BUFFER_SIZE sysconf(_SC_PAGESIZE)

namespace android {
namespace vintf {

/**
 * Slurps the device manifest file and add build time flag to it.
 */
class AssembleVintf {
public:
    template<typename T>
    static bool getFlag(const std::string& key, T* value) {
        const char *envValue = getenv(key.c_str());
        if (envValue == NULL) {
            std::cerr << "Required " << key << " flag." << std::endl;
            return false;
        }

        if (!parse(envValue, value)) {
            std::cerr << "Cannot parse " << envValue << "." << std::endl;
            return false;
        }
        return true;
    }

    static std::string read(std::basic_istream<char>& is) {
        std::stringstream ss;
        ss << is.rdbuf();
        return ss.str();
    }

    static bool parseFileForKernelConfigs(const std::string& path, std::vector<KernelConfig>* out) {
        std::ifstream ifs{path};
        if (!ifs.is_open()) {
            std::cerr << "File '" << path << "' does not exist or cannot be read." << std::endl;
            return false;
        }
        KernelConfigParser parser(true /* processComments */);
        std::string content = read(ifs);
        status_t err = parser.process(content.c_str(), content.size());
        if (err != OK) {
            std::cerr << parser.error().rdbuf();
            return false;
        }
        err = parser.finish();
        if (err != OK) {
            std::cerr << parser.error().rdbuf();
            return false;
        }

        for (auto& configPair : parser.configs()) {
            out->push_back({});
            KernelConfig& config = out->back();
            config.first = std::move(configPair.first);
            if (!parseKernelConfigTypedValue(configPair.second, &config.second)) {
                std::cerr << "Unknown value type for key = '" << config.first << "', value = '"
                          << configPair.second << "'\n";
                return false;
            }
        }
        return true;
    }

    std::basic_ostream<char>& out() const {
        return mOutFileRef == nullptr ? std::cout : *mOutFileRef;
    }

    bool assembleHalManifest(HalManifest* halManifest) {
        std::string error;

        if (halManifest->mType == SchemaType::DEVICE) {
            if (!getFlag("BOARD_SEPOLICY_VERS", &halManifest->device.mSepolicyVersion)) {
                return false;
            }
        }

        if (mOutputMatrix) {
            CompatibilityMatrix generatedMatrix = halManifest->generateCompatibleMatrix();
            if (!halManifest->checkCompatibility(generatedMatrix, &error)) {
                std::cerr << "FATAL ERROR: cannot generate a compatible matrix: " << error
                          << std::endl;
            }
            out() << "<!-- \n"
                     "    Autogenerated skeleton compatibility matrix. \n"
                     "    Use with caution. Modify it to suit your needs.\n"
                     "    All HALs are set to optional.\n"
                     "    Many entries other than HALs are zero-filled and\n"
                     "    require human attention. \n"
                     "-->\n"
                  << gCompatibilityMatrixConverter(generatedMatrix);
        } else {
            out() << gHalManifestConverter(*halManifest);
        }
        out().flush();

        if (mCheckFile.is_open()) {
            CompatibilityMatrix checkMatrix;
            if (!gCompatibilityMatrixConverter(&checkMatrix, read(mCheckFile))) {
                std::cerr << "Cannot parse check file as a compatibility matrix: "
                          << gCompatibilityMatrixConverter.lastError() << std::endl;
                return false;
            }
            if (!halManifest->checkCompatibility(checkMatrix, &error)) {
                std::cerr << "Not compatible: " << error << std::endl;
                return false;
            }
        }

        return true;
    }

    bool assembleCompatibilityMatrix(CompatibilityMatrix* matrix) {
        std::string error;

        KernelSepolicyVersion kernelSepolicyVers;
        Version sepolicyVers;
        if (matrix->mType == SchemaType::FRAMEWORK) {
            if (!getFlag("BOARD_SEPOLICY_VERS", &sepolicyVers)) {
                return false;
            }
            if (!getFlag("POLICYVERS", &kernelSepolicyVers)) {
                return false;
            }
            for (const auto& pair : mKernels) {
                std::vector<KernelConfig> configs;
                if (!parseFileForKernelConfigs(pair.second, &configs)) {
                    return false;
                }
                bool added = false;
                for (auto& e : matrix->framework.mKernels) {
                    if (e.minLts() == pair.first) {
                        e.mConfigs.insert(e.mConfigs.end(), configs.begin(), configs.end());
                        added = true;
                        break;
                    }
                }
                if (!added) {
                    matrix->framework.mKernels.push_back(
                        MatrixKernel{KernelVersion{pair.first}, std::move(configs)});
                }
            }
            matrix->framework.mSepolicy =
                Sepolicy(kernelSepolicyVers, {{sepolicyVers.majorVer, sepolicyVers.minorVer}});

            Version avbMetaVersion;
            if (!getFlag("FRAMEWORK_VBMETA_VERSION", &avbMetaVersion)) {
                return false;
            }
            matrix->framework.mAvbMetaVersion = avbMetaVersion;
        }
        out() << gCompatibilityMatrixConverter(*matrix);
        out().flush();

        if (mCheckFile.is_open()) {
            HalManifest checkManifest;
            if (!gHalManifestConverter(&checkManifest, read(mCheckFile))) {
                std::cerr << "Cannot parse check file as a HAL manifest: "
                          << gHalManifestConverter.lastError() << std::endl;
                return false;
            }
            if (!checkManifest.checkCompatibility(*matrix, &error)) {
                std::cerr << "Not compatible: " << error << std::endl;
                return false;
            }
        }

        return true;
    }

    enum AssembleStatus { SUCCESS, FAIL_AND_EXIT, TRY_NEXT };
    template <typename Schema, typename AssembleFunc>
    AssembleStatus tryAssemble(const XmlConverter<Schema>& converter, const std::string& schemaName,
                               AssembleFunc assemble) {
        Schema schema;
        if (!converter(&schema, read(mInFiles.front()))) {
            return TRY_NEXT;
        }
        auto firstType = schema.type();
        for (auto it = mInFiles.begin() + 1; it != mInFiles.end(); ++it) {
            Schema additionalSchema;
            if (!converter(&additionalSchema, read(*it))) {
                std::cerr << "File \"" << mInFilePaths[std::distance(mInFiles.begin(), it)]
                          << "\" is not a valid " << firstType << " " << schemaName
                          << " (but the first file is a valid " << firstType << " " << schemaName
                          << "). Error: " << converter.lastError() << std::endl;
                return FAIL_AND_EXIT;
            }
            if (additionalSchema.type() != firstType) {
                std::cerr << "File \"" << mInFilePaths[std::distance(mInFiles.begin(), it)]
                          << "\" is a " << additionalSchema.type() << " " << schemaName
                          << " (but a " << firstType << " " << schemaName << " is expected)."
                          << std::endl;
                return FAIL_AND_EXIT;
            }
            schema.addAll(std::move(additionalSchema));
        }
        return assemble(&schema) ? SUCCESS : FAIL_AND_EXIT;
    }

    bool assemble() {
        using std::placeholders::_1;
        if (mInFiles.empty()) {
            std::cerr << "Missing input file." << std::endl;
            return false;
        }

        auto status = tryAssemble(gHalManifestConverter, "manifest",
                                  std::bind(&AssembleVintf::assembleHalManifest, this, _1));
        if (status == SUCCESS) return true;
        if (status == FAIL_AND_EXIT) return false;

        resetInFiles();

        status = tryAssemble(gCompatibilityMatrixConverter, "compatibility matrix",
                             std::bind(&AssembleVintf::assembleCompatibilityMatrix, this, _1));
        if (status == SUCCESS) return true;
        if (status == FAIL_AND_EXIT) return false;

        std::cerr << "Input file has unknown format." << std::endl
                  << "Error when attempting to convert to manifest: "
                  << gHalManifestConverter.lastError() << std::endl
                  << "Error when attempting to convert to compatibility matrix: "
                  << gCompatibilityMatrixConverter.lastError() << std::endl;
        return false;
    }

    bool openOutFile(const char* path) {
        mOutFileRef = std::make_unique<std::ofstream>();
        mOutFileRef->open(path);
        return mOutFileRef->is_open();
    }

    bool openInFile(const char* path) {
        mInFilePaths.push_back(path);
        mInFiles.push_back({});
        mInFiles.back().open(path);
        return mInFiles.back().is_open();
    }

    bool openCheckFile(const char* path) {
        mCheckFile.open(path);
        return mCheckFile.is_open();
    }

    void resetInFiles() {
        for (auto& inFile : mInFiles) {
            inFile.clear();
            inFile.seekg(0);
        }
    }

    void setOutputMatrix() { mOutputMatrix = true; }

    bool addKernel(const std::string& kernelArg) {
        auto ind = kernelArg.find(':');
        if (ind == std::string::npos) {
            std::cerr << "Unrecognized --kernel option '" << kernelArg << "'" << std::endl;
            return false;
        }
        std::string kernelVerStr{kernelArg.begin(), kernelArg.begin() + ind};
        std::string kernelConfigPath{kernelArg.begin() + ind + 1, kernelArg.end()};
        Version kernelVer;
        if (!parse(kernelVerStr, &kernelVer)) {
            std::cerr << "Unrecognized kernel version '" << kernelVerStr << "'" << std::endl;
            return false;
        }
        mKernels.push_back({{kernelVer.majorVer, kernelVer.minorVer, 0u}, kernelConfigPath});
        return true;
    }

   private:
    std::vector<std::string> mInFilePaths;
    std::vector<std::ifstream> mInFiles;
    std::unique_ptr<std::ofstream> mOutFileRef;
    std::ifstream mCheckFile;
    bool mOutputMatrix = false;
    std::vector<std::pair<KernelVersion, std::string>> mKernels;
};

}  // namespace vintf
}  // namespace android

void help() {
    std::cerr << "assemble_vintf: Checks if a given manifest / matrix file is valid and \n"
                 "    fill in build-time flags into the given file.\n"
                 "assemble_vintf -h\n"
                 "               Display this help text.\n"
                 "assemble_vintf -i <input file>[:<input file>[...]] [-o <output file>] [-m]\n"
                 "               [-c [<check file>]]\n"
                 "               Fill in build-time flags into the given file.\n"
                 "    -i <input file>[:<input file>[...]]\n"
                 "               A list of input files. Format is automatically detected for the\n"
                 "               first file, and the remaining files must have the same format.\n"
                 "               Files other than the first file should only have <hal> defined;\n"
                 "               other entries are ignored.\n"
                 "    -o <output file>\n"
                 "               Optional output file. If not specified, write to stdout.\n"
                 "    -m\n"
                 "               a compatible compatibility matrix is\n"
                 "               generated instead; for example, given a device manifest,\n"
                 "               a framework compatibility matrix is generated. This flag\n"
                 "               is ignored when input is a compatibility matrix.\n"
                 "    -c [<check file>]\n"
                 "               After writing the output file, check compatibility between\n"
                 "               output file and check file.\n"
                 "               If -c is set but the check file is not specified, a warning\n"
                 "               message is written to stderr. Return 0.\n"
                 "               If the check file is specified but is not compatible, an error\n"
                 "               message is written to stderr. Return 1.\n"
                 "    --kernel=<version>:<android-base.cfg>\n"
                 "               Add a kernel entry to framework compatibility matrix.\n"
                 "               Ignored for other input format.\n"
                 "               <version> has format: 3.18\n"
                 "               <android-base.cfg> is the location of android-base.cfg\n";
}

int main(int argc, char **argv) {
    const struct option longopts[] = {{"kernel", required_argument, NULL, 'k'}, {0, 0, 0, 0}};

    std::string outFilePath;
    ::android::vintf::AssembleVintf assembleVintf;
    int res;
    int optind;
    while ((res = getopt_long(argc, argv, "hi:o:mc:", longopts, &optind)) >= 0) {
        switch (res) {
            case 'i': {
                char* inFilePath = strtok(optarg, ":");
                while (inFilePath != NULL) {
                    if (!assembleVintf.openInFile(inFilePath)) {
                        std::cerr << "Failed to open " << optarg << std::endl;
                        return 1;
                    }
                    inFilePath = strtok(NULL, ":");
                }
            } break;

            case 'o': {
                outFilePath = optarg;
                if (!assembleVintf.openOutFile(optarg)) {
                    std::cerr << "Failed to open " << optarg << std::endl;
                    return 1;
                }
            } break;

            case 'm': {
                assembleVintf.setOutputMatrix();
            } break;

            case 'c': {
                if (strlen(optarg) != 0) {
                    if (!assembleVintf.openCheckFile(optarg)) {
                        std::cerr << "Failed to open " << optarg << std::endl;
                        return 1;
                    }
                } else {
                    std::cerr << "WARNING: no compatibility check is done on "
                              << (outFilePath.empty() ? "output" : outFilePath) << std::endl;
                }
            } break;

            case 'k': {
                if (!assembleVintf.addKernel(optarg)) {
                    std::cerr << "ERROR: Unrecognized --kernel argument." << std::endl;
                    return 1;
                }
            } break;

            case 'h':
            default: {
                help();
                return 1;
            } break;
        }
    }

    bool success = assembleVintf.assemble();

    return success ? 0 : 1;
}