hostsidetests/securitybulletin/securityPatch/CVE-2017-0697/poc.cpp

/**
 * Copyright (C) 2020 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 <dlfcn.h>
#include <media/IMediaHTTPService.h>
#include <media/DataSource.h>
#include <media/stagefright/DataSourceFactory.h>
#include <media/MediaExtractor.h>
#include <media/stagefright/MetaData.h>
#include <media/IMediaExtractor.h>
#include <media/DataSourceBase.h>
#include "../includes/memutils_track.h"
#include "../includes/common.h"


#define LIB_NAME                 "/system/lib64/extractors/libmp4extractor.so"
#define PSSH_BOX_SIZE            1048576
char enable_selective_overload = ENABLE_NONE;
using namespace android;

bool is_tracking_required(size_t size) {
    return (size == PSSH_BOX_SIZE);
}

int main(int argc, char* argv[]) {
    (void)argc;
    (void)argv;

#if _64_BIT
    if (argc < 2) {
        return EXIT_FAILURE;
    }

    void *libHandle = dlopen(LIB_NAME, RTLD_NOW | RTLD_LOCAL);
    if (!libHandle) {
        return EXIT_FAILURE;
    }

    sp < DataSource > dataSource = DataSourceFactory::CreateFromURI(NULL,
                                                                    argv[1]);
    if (dataSource == nullptr) {
        dlclose(libHandle);
        return EXIT_FAILURE;
    }

    MediaExtractor::GetExtractorDef getDef =
            (MediaExtractor::GetExtractorDef) dlsym(libHandle,
                                                    "GETEXTRACTORDEF");
    if (!getDef) {
        dlclose(libHandle);
        return EXIT_FAILURE;
    }

    void *meta = nullptr;
    MediaExtractor::CreatorFunc creator = NULL;
    MediaExtractor::FreeMetaFunc freeMeta = nullptr;
    float confidence;
    creator = getDef().sniff(dataSource.get(), &confidence, &meta, &freeMeta);
    if (!creator) {
        dlclose(libHandle);
        return EXIT_FAILURE;
    }

    MediaExtractor *ret = creator(dataSource.get(), meta);
    if (ret == nullptr) {
        dlclose(libHandle);
        return EXIT_FAILURE;
    }

    if (meta != nullptr && freeMeta != nullptr) {
        freeMeta(meta);
    }

    sp < MetaData > metaData = new MetaData();
    enable_selective_overload = ENABLE_MALLOC_CHECK;
    ret->getTrackMetaData(*metaData.get(), 0, 1);
    enable_selective_overload = ENABLE_NONE;

    dlclose(libHandle);
#endif /* _64_BIT */

    return EXIT_SUCCESS;
}