Added mediametrics_service_fuzzer (ab3a6418) · Commits · e / os / android_frameworks_av

services/mediametrics/fuzzer/Android.bp

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		/******************************************************************************
		*
		* 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.
		*
		*****************************************************************************
		* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
		*/

		cc_fuzz {
		name: "mediametrics_service_fuzzer",

		srcs: [
		"mediametrics_service_fuzzer.cpp",
		],

		static_libs: [
		"libmediametrics",
		"libmediametricsservice",
		"libplatformprotos",
		],

		shared_libs: [
		"libbase",
		"libbinder",
		"libcutils",
		"liblog",
		"libmedia_helper",
		"libmediautils",
		"libmemunreachable",
		"libprotobuf-cpp-lite",
		"libstagefright",
		"libstatslog",
		"libutils",
		],

		include_dirs: [
		"frameworks/av/services/mediametrics",
		"system/media/audio_utils/include",
		],

		fuzz_config: {
		cc: [
		"android-media-fuzzing-reports@google.com",
		],
		componentid: 155276,
		},
		}

services/mediametrics/fuzzer/README.md

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		# Fuzzer for libmediametricsservice

		## Plugin Design Considerations
		The fuzzer plugin for libmediametricsservice is designed based on the
		understanding of the service and tries to achieve the following:

		##### Maximize code coverage
		The configuration parameters are not hardcoded, but instead selected based on
		incoming data. This ensures more code paths are reached by the fuzzer.

		Media Metrics Service contains the following modules:
		1. Media Metrics Item Manipulation (module name: `Item`)
		2. Media Metrics Time Machine Storage (module name: `TimeMachineStorage`)
		3. Media Metrics Transaction Log (module name: `TransactionLog`)
		4. Media Metrics Analytics Action (module name: `AnalyticsAction`)
		5. Media Metrics Audio Analytics (module name: `AudioAnalytics`)
		6. Media Metrics Timed Action (module name: `TimedAction`)

		\| Module\| Valid Input Values\| Configured Value\|
		\|------------- \|-------------\| ----- \|
		\| `Item` \| Key: `std::string`. Values: `INT32_MIN` to `INT32_MAX`, `INT64_MIN` to `INT64_MAX`, `std::string`, `double`, `pair<INT32_MIN to INT32_MAX, INT32_MIN to INT32_MAX>` \| Value obtained from FuzzedDataProvider \|
		\| `TimeMachineStorage` \| Key: `std::string`. Values: `INT32_MIN` to `INT32_MAX`, `INT64_MIN` to `INT64_MAX`, `std::string`, `double`, `pair<INT32_MIN to INT32_MAX, INT32_MIN to INT32_MAX>` \| Value obtained from FuzzedDataProvider \|
		\| `TranscationLog` \| `mediametrics::Item` \| `mediametrics::Item` created by obtaining values from FuzzedDataProvider\|
		\| `AnalyticsAction` \| URL: `std::string` ending with .event, Value: `std::string`, action: A function \| URL and Values obtained from FuzzedDataProvider, a placeholder function was passed as action\|
		\| `AudioAnalytics` \| `mediametrics::Item` \| `mediametrics::Item` created by obtaining values from FuzzedDataProvider\|
		\| `TimedAction` \| time: `std::chrono::seconds`, function: `std::function` \| `std::chrono::seconds` : value obtained from FuzzedDataProvider, `std::function`: a placeholder function was used. \|

		This also ensures that the plugin is always deterministic for any given input.

		## Build

		This describes steps to build mediametrics_service_fuzzer binary.

		### Android

		#### Steps to build
		Build the fuzzer
		```
		$ mm -j$(nproc) mediametrics_service_fuzzer
		```

		#### Steps to run
		Create a directory CORPUS_DIR and copy some files to that folder
		Push this directory to device.

		To run on device
		```
		$ adb sync data
		$ adb shell /data/fuzz/arm64/mediametrics_service_fuzzer/mediametrics_service_fuzzer CORPUS_DIR
		```

		## References:
		* http://llvm.org/docs/LibFuzzer.html
		* https://github.com/google/oss-fuzz

services/mediametrics/fuzzer/mediametrics_service_fuzzer.cpp

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		/******************************************************************************
		*
		* 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.
		*
		*****************************************************************************
		* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
		*/
		#include <fuzzer/FuzzedDataProvider.h>
		#include <media/MediaMetricsItem.h>
		#include <stdio.h>
		#include <string.h>
		#include <utils/Log.h>
		#include <algorithm>

		#include "AudioTypes.h"
		#include "MediaMetricsService.h"
		#include "StringUtils.h"

		using namespace android;

		// low water mark
		constexpr size_t kLogItemsLowWater = 1;
		// high water mark
		constexpr size_t kLogItemsHighWater = 2;

		class MediaMetricsServiceFuzzer {
		public:
		void invokeStartsWith(const uint8_t *data, size_t size);
		void invokeInstantiate(const uint8_t *data, size_t size);
		void invokePackageInstallerCheck(const uint8_t *data, size_t size);
		void invokeItemManipulation(const uint8_t *data, size_t size);
		void invokeItemExpansion(const uint8_t *data, size_t size);
		void invokeTimeMachineStorage(const uint8_t *data, size_t size);
		void invokeTransactionLog(const uint8_t *data, size_t size);
		void invokeAnalyticsAction(const uint8_t *data, size_t size);
		void invokeAudioAnalytics(const uint8_t *data, size_t size);
		void invokeTimedAction(const uint8_t *data, size_t size);
		void process(const uint8_t *data, size_t size);
		};

		void MediaMetricsServiceFuzzer::invokeStartsWith(const uint8_t *data, size_t size) {
		FuzzedDataProvider fdp = FuzzedDataProvider(data, size);
		while (fdp.remaining_bytes()) {
		android::mediametrics::startsWith(fdp.ConsumeRandomLengthString(),
		fdp.ConsumeRandomLengthString());
		}
		}

		void MediaMetricsServiceFuzzer::invokeInstantiate(const uint8_t *data, size_t size) {
		FuzzedDataProvider fdp = FuzzedDataProvider(data, size);
		sp mediaMetricsService = new MediaMetricsService();

		while (fdp.remaining_bytes()) {
		std::unique_ptr<mediametrics::Item> random_key(
		mediametrics::Item::create(fdp.ConsumeRandomLengthString()));
		mediaMetricsService->submit(random_key.get());
		random_key->setInt32(fdp.ConsumeRandomLengthString().c_str(),
		fdp.ConsumeIntegral<int32_t>());
		mediaMetricsService->submit(random_key.get());

		std::unique_ptr<mediametrics::Item> audiotrack_key(
		mediametrics::Item::create("audiotrack"));
		mediaMetricsService->submit(audiotrack_key.get());
		audiotrack_key->addInt32(fdp.ConsumeRandomLengthString().c_str(),
		fdp.ConsumeIntegral<int32_t>());
		mediaMetricsService->submit(audiotrack_key.get());
		}
		}

		void MediaMetricsServiceFuzzer::invokePackageInstallerCheck(const uint8_t *data, size_t size) {
		FuzzedDataProvider fdp = FuzzedDataProvider(data, size);
		while (fdp.remaining_bytes()) {
		MediaMetricsService::useUidForPackage(fdp.ConsumeRandomLengthString().c_str(),
		fdp.ConsumeRandomLengthString().c_str());
		}
		}

		void MediaMetricsServiceFuzzer::invokeItemManipulation(const uint8_t *data, size_t size) {
		FuzzedDataProvider fdp = FuzzedDataProvider(data, size);

		mediametrics::Item item(fdp.ConsumeRandomLengthString().c_str());
		while (fdp.remaining_bytes()) {
		const uint8_t action = fdp.ConsumeIntegralInRange<uint8_t>(0, 16);
		const std::string key = fdp.ConsumeRandomLengthString();
		if (fdp.remaining_bytes() < 1 \|\| key.length() < 1) {
		break;
		}
		switch (action) {
		case 0: {
		item.setInt32(key.c_str(), fdp.ConsumeIntegral<int32_t>());
		break;
		}
		case 1: {
		item.addInt32(key.c_str(), fdp.ConsumeIntegral<int32_t>());
		break;
		}
		case 2: {
		int32_t i32 = 0;
		item.getInt32(key.c_str(), &i32);
		break;
		}
		case 3: {
		item.setInt64(key.c_str(), fdp.ConsumeIntegral<int64_t>());
		break;
		}
		case 4: {
		item.addInt64(key.c_str(), fdp.ConsumeIntegral<int64_t>());
		break;
		}
		case 5: {
		int64_t i64 = 0;
		item.getInt64(key.c_str(), &i64);
		break;
		}
		case 6: {
		item.setDouble(key.c_str(), fdp.ConsumeFloatingPoint<double>());
		break;
		}
		case 7: {
		item.addDouble(key.c_str(), fdp.ConsumeFloatingPoint<double>());
		break;
		}
		case 8: {
		double d = 0;
		item.getDouble(key.c_str(), &d);
		break;
		}
		case 9: {
		item.setCString(key.c_str(), fdp.ConsumeRandomLengthString().c_str());
		break;
		}
		case 10: {
		char *s = nullptr;
		item.getCString(key.c_str(), &s);
		if (s) free(s);
		break;
		}
		case 11: {
		std::string s;
		item.getString(key.c_str(), &s);
		break;
		}
		case 12: {
		item.setRate(key.c_str(), fdp.ConsumeIntegral<int64_t>(),
		fdp.ConsumeIntegral<int64_t>());
		break;
		}
		case 13: {
		int64_t b = 0, h = 0;
		double d = 0;
		item.getRate(key.c_str(), &b, &h, &d);
		break;
		}
		case 14: {
		(void)item.filter(key.c_str());
		break;
		}
		case 15: {
		const char *arr[1] = {""};
		arr[0] = const_cast<char *>(key.c_str());
		(void)item.filterNot(1, arr);
		break;
		}
		case 16: {
		(void)item.toString().c_str();
		break;
		}
		}
		}

		Parcel p;
		mediametrics::Item item2;

		(void)item.writeToParcel(&p);
		p.setDataPosition(0); // rewind for reading
		(void)item2.readFromParcel(p);

		char *byteData = nullptr;
		size_t length = 0;
		(void)item.writeToByteString(&byteData, &length);
		(void)item2.readFromByteString(byteData, length);
		if (byteData) {
		free(byteData);
		}

		sp mediaMetricsService = new MediaMetricsService();
		mediaMetricsService->submit(&item2);
		}

		void MediaMetricsServiceFuzzer::invokeItemExpansion(const uint8_t *data, size_t size) {
		FuzzedDataProvider fdp = FuzzedDataProvider(data, size);

		mediametrics::LogItem<1> item("FuzzItem");
		item.setPid(fdp.ConsumeIntegral<int16_t>()).setUid(fdp.ConsumeIntegral<int16_t>());

		while (fdp.remaining_bytes()) {
		int32_t i = fdp.ConsumeIntegral<int32_t>();
		item.set(std::to_string(i).c_str(), (int32_t)i);
		}
		item.updateHeader();

		mediametrics::Item item2;
		(void)item2.readFromByteString(item.getBuffer(), item.getLength());

		sp mediaMetricsService = new MediaMetricsService();
		mediaMetricsService->submit(&item2);
		}

		void MediaMetricsServiceFuzzer::invokeTimeMachineStorage(const uint8_t *data, size_t size) {
		FuzzedDataProvider fdp = FuzzedDataProvider(data, size);

		auto item = std::make_shared<mediametrics::Item>("FuzzKey");
		int32_t i32 = fdp.ConsumeIntegral<int32_t>();
		int64_t i64 = fdp.ConsumeIntegral<int64_t>();
		double d = fdp.ConsumeFloatingPoint<double>();
		std::string str = fdp.ConsumeRandomLengthString();
		std::pair<int64_t, int64_t> pair(fdp.ConsumeIntegral<int64_t>(),
		fdp.ConsumeIntegral<int64_t>());
		(*item).set("i32", i32).set("i64", i64).set("double", d).set("string", str).set("rate", pair);

		android::mediametrics::TimeMachine timeMachine;
		timeMachine.put(item, true);

		timeMachine.get("Key", "i32", &i32, -1);

		timeMachine.get("Key", "i64", &i64, -1);

		timeMachine.get("Key", "double", &d, -1);

		timeMachine.get("Key", "string", &str, -1);

		timeMachine.get("Key.i32", &i32, -1);

		timeMachine.get("Key.i64", &i64, -1);

		timeMachine.get("Key.double", &d, -1);

		str.clear();
		timeMachine.get("Key.string", &str, -1);
		}

		void MediaMetricsServiceFuzzer::invokeTransactionLog(const uint8_t *data, size_t size) {
		FuzzedDataProvider fdp = FuzzedDataProvider(data, size);

		auto item = std::make_shared<mediametrics::Item>("Key1");
		(*item)
		.set("one", fdp.ConsumeIntegral<int32_t>())
		.set("two", fdp.ConsumeIntegral<int32_t>())
		.setTimestamp(fdp.ConsumeIntegral<int32_t>());

		android::mediametrics::TransactionLog transactionLog(
		kLogItemsLowWater, kLogItemsHighWater); // keep at most 2 items
		transactionLog.size();

		transactionLog.put(item);
		transactionLog.size();

		auto item2 = std::make_shared<mediametrics::Item>("Key2");
		(*item2)
		.set("three", fdp.ConsumeIntegral<int32_t>())
		.set("[Key1]three", fdp.ConsumeIntegral<int32_t>())
		.setTimestamp(fdp.ConsumeIntegral<int32_t>());

		transactionLog.put(item2);
		transactionLog.size();

		auto item3 = std::make_shared<mediametrics::Item>("Key3");
		(*item3)
		.set("six", fdp.ConsumeIntegral<int32_t>())
		.set("[Key1]four", fdp.ConsumeIntegral<int32_t>()) // affects Key1
		.set("[Key1]five", fdp.ConsumeIntegral<int32_t>()) // affects key1
		.setTimestamp(fdp.ConsumeIntegral<int32_t>());

		transactionLog.put(item3);
		transactionLog.size();
		}

		void MediaMetricsServiceFuzzer::invokeAnalyticsAction(const uint8_t *data, size_t size) {
		FuzzedDataProvider fdp = FuzzedDataProvider(data, size);

		mediametrics::AnalyticsActions analyticsActions;
		bool action = false;

		while (fdp.remaining_bytes()) {
		analyticsActions.addAction(
		(fdp.ConsumeRandomLengthString() + std::string(".event")).c_str(),
		fdp.ConsumeRandomLengthString(),
		std::make_shared<mediametrics::AnalyticsActions::Function>(
		[&](const std::shared_ptr<const android::mediametrics::Item> &) {
		action = true;
		}));
		}

		FuzzedDataProvider fdp2 = FuzzedDataProvider(data, size);

		while (fdp2.remaining_bytes()) {
		// make a test item
		auto item = std::make_shared<mediametrics::Item>(fdp2.ConsumeRandomLengthString().c_str());
		(*item).set("event", fdp2.ConsumeRandomLengthString().c_str());

		// get the actions and execute them
		auto actions = analyticsActions.getActionsForItem(item);
		for (const auto &action : actions) {
		action->operator()(item);
		}
		}
		}

		void MediaMetricsServiceFuzzer::invokeAudioAnalytics(const uint8_t *data, size_t size) {
		FuzzedDataProvider fdp = FuzzedDataProvider(data, size);
		android::mediametrics::AudioAnalytics audioAnalytics;

		while (fdp.remaining_bytes()) {
		auto item = std::make_shared<mediametrics::Item>(fdp.ConsumeRandomLengthString().c_str());
		int32_t transactionUid = fdp.ConsumeIntegral<int32_t>(); // arbitrary
		(*item)
		.set(fdp.ConsumeRandomLengthString().c_str(), fdp.ConsumeIntegral<int32_t>())
		.set(fdp.ConsumeRandomLengthString().c_str(), fdp.ConsumeIntegral<int32_t>())
		.set(AMEDIAMETRICS_PROP_ALLOWUID, transactionUid)
		.setUid(transactionUid)
		.setTimestamp(fdp.ConsumeIntegral<int32_t>());
		audioAnalytics.submit(item, fdp.ConsumeBool());
		}

		audioAnalytics.dump(1000);
		}

		void MediaMetricsServiceFuzzer::invokeTimedAction(const uint8_t *data, size_t size) {
		FuzzedDataProvider fdp = FuzzedDataProvider(data, size);
		android::mediametrics::TimedAction timedAction;
		std::atomic_int value = 0;

		while (fdp.remaining_bytes()) {
		timedAction.postIn(std::chrono::seconds(fdp.ConsumeIntegral<int32_t>()),
		[&value] { ++value; });
		timedAction.size();
		}
		}

		void MediaMetricsServiceFuzzer::process(const uint8_t *data, size_t size) {
		invokeStartsWith(data, size);
		invokeInstantiate(data, size);
		invokePackageInstallerCheck(data, size);
		invokeItemManipulation(data, size);
		invokeItemExpansion(data, size);
		invokeTimeMachineStorage(data, size);
		invokeTransactionLog(data, size);
		invokeAnalyticsAction(data, size);
		invokeAudioAnalytics(data, size);
		invokeTimedAction(data, size);
		}

		extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
		if (size < 1) {
		return 0;
		}
		MediaMetricsServiceFuzzer mediaMetricsServiceFuzzer;
		mediaMetricsServiceFuzzer.process(data, size);
		return 0;
		}