| /* |
| * Copyright 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 <gui/BufferQueue.h> |
| #include <gui/IProducerListener.h> |
| #include <gui/Surface.h> |
| |
| #include <android/native_window.h> |
| |
| #include <gtest/gtest.h> |
| |
| namespace android { |
| namespace test { |
| |
| class ProxyBQP : public BnGraphicBufferProducer { |
| public: |
| ProxyBQP(const sp<IGraphicBufferProducer>& producer) : mProducer(producer) {} |
| |
| // Pass through calls to mProducer |
| status_t requestBuffer(int slot, sp<GraphicBuffer>* buf) override { |
| return mProducer->requestBuffer(slot, buf); |
| } |
| status_t setMaxDequeuedBufferCount(int maxDequeuedBuffers) override { |
| return mProducer->setMaxDequeuedBufferCount(maxDequeuedBuffers); |
| } |
| status_t setAsyncMode(bool async) override { return mProducer->setAsyncMode(async); } |
| status_t dequeueBuffer(int* slot, sp<Fence>* fence, uint32_t w, uint32_t h, PixelFormat format, |
| uint64_t usage, FrameEventHistoryDelta* outTimestamps) override { |
| return mProducer->dequeueBuffer(slot, fence, w, h, format, usage, outTimestamps); |
| } |
| status_t detachBuffer(int slot) override { return mProducer->detachBuffer(slot); } |
| status_t detachNextBuffer(sp<GraphicBuffer>* outBuffer, sp<Fence>* outFence) override { |
| return mProducer->detachNextBuffer(outBuffer, outFence); |
| } |
| status_t attachBuffer(int* outSlot, const sp<GraphicBuffer>& buffer) override { |
| return mProducer->attachBuffer(outSlot, buffer); |
| } |
| status_t queueBuffer(int slot, const QueueBufferInput& input, |
| QueueBufferOutput* output) override { |
| return mProducer->queueBuffer(slot, input, output); |
| } |
| status_t cancelBuffer(int slot, const sp<Fence>& fence) override { |
| return mProducer->cancelBuffer(slot, fence); |
| } |
| int query(int what, int* value) override { return mProducer->query(what, value); } |
| status_t connect(const sp<IProducerListener>& listener, int api, bool producerControlledByApp, |
| QueueBufferOutput* output) override { |
| return mProducer->connect(listener, api, producerControlledByApp, output); |
| } |
| status_t disconnect(int api, DisconnectMode mode) override { |
| return mProducer->disconnect(api, mode); |
| } |
| status_t setSidebandStream(const sp<NativeHandle>& stream) override { |
| return mProducer->setSidebandStream(stream); |
| } |
| void allocateBuffers(uint32_t width, uint32_t height, PixelFormat format, |
| uint64_t usage) override { |
| mProducer->allocateBuffers(width, height, format, usage); |
| } |
| status_t allowAllocation(bool allow) override { return mProducer->allowAllocation(allow); } |
| status_t setGenerationNumber(uint32_t generationNumber) override { |
| return mProducer->setGenerationNumber(generationNumber); |
| } |
| String8 getConsumerName() const override { return mProducer->getConsumerName(); } |
| status_t setSharedBufferMode(bool sharedBufferMode) override { |
| return mProducer->setSharedBufferMode(sharedBufferMode); |
| } |
| status_t setAutoRefresh(bool autoRefresh) override { |
| return mProducer->setAutoRefresh(autoRefresh); |
| } |
| status_t setDequeueTimeout(nsecs_t timeout) override { |
| return mProducer->setDequeueTimeout(timeout); |
| } |
| status_t getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer, sp<Fence>* outFence, |
| float outTransformMatrix[16]) override { |
| return mProducer->getLastQueuedBuffer(outBuffer, outFence, outTransformMatrix); |
| } |
| void getFrameTimestamps(FrameEventHistoryDelta*) override {} |
| status_t getUniqueId(uint64_t* outId) const override { return mProducer->getUniqueId(outId); } |
| |
| protected: |
| sp<IGraphicBufferProducer> mProducer; |
| }; |
| |
| class MaliciousBQP : public ProxyBQP { |
| public: |
| MaliciousBQP(const sp<IGraphicBufferProducer>& producer) : ProxyBQP(producer) {} |
| |
| void beMalicious(int32_t value) { mMaliciousValue = value; } |
| |
| void setExpectedSlot(int32_t slot) { mExpectedSlot = slot; } |
| |
| // Override dequeueBuffer, optionally corrupting the returned slot number |
| status_t dequeueBuffer(int* buf, sp<Fence>* fence, uint32_t width, uint32_t height, |
| PixelFormat format, uint64_t usage, |
| FrameEventHistoryDelta* outTimestamps) override { |
| EXPECT_EQ(BUFFER_NEEDS_REALLOCATION, |
| mProducer->dequeueBuffer(buf, fence, width, height, format, usage, |
| outTimestamps)); |
| EXPECT_EQ(mExpectedSlot, *buf); |
| if (mMaliciousValue != 0) { |
| *buf = mMaliciousValue; |
| return NO_ERROR; |
| } else { |
| return BUFFER_NEEDS_REALLOCATION; |
| } |
| } |
| |
| private: |
| int32_t mMaliciousValue = 0; |
| int32_t mExpectedSlot = 0; |
| }; |
| |
| class DummyListener : public BnConsumerListener { |
| public: |
| void onFrameAvailable(const BufferItem&) override {} |
| void onBuffersReleased() override {} |
| void onSidebandStreamChanged() override {} |
| }; |
| |
| sp<MaliciousBQP> getMaliciousBQP() { |
| sp<IGraphicBufferProducer> producer; |
| sp<IGraphicBufferConsumer> consumer; |
| BufferQueue::createBufferQueue(&producer, &consumer); |
| sp<IConsumerListener> listener = new DummyListener; |
| consumer->consumerConnect(listener, false); |
| |
| sp<MaliciousBQP> malicious = new MaliciousBQP(producer); |
| return malicious; |
| } |
| |
| TEST(Malicious, Bug36991414Max) { |
| sp<MaliciousBQP> malicious = getMaliciousBQP(); |
| sp<Surface> surface = new Surface(malicious); |
| |
| ASSERT_EQ(NO_ERROR, surface->connect(NATIVE_WINDOW_API_CPU, nullptr, false)); |
| ANativeWindow_Buffer buffer; |
| ASSERT_EQ(NO_ERROR, surface->lock(&buffer, nullptr)); |
| ASSERT_EQ(NO_ERROR, surface->unlockAndPost()); |
| |
| malicious->setExpectedSlot(1); |
| malicious->beMalicious(std::numeric_limits<int32_t>::max()); |
| ASSERT_EQ(FAILED_TRANSACTION, surface->lock(&buffer, nullptr)); |
| } |
| |
| TEST(Malicious, Bug36991414Min) { |
| sp<MaliciousBQP> malicious = getMaliciousBQP(); |
| sp<Surface> surface = new Surface(malicious); |
| |
| ASSERT_EQ(NO_ERROR, surface->connect(NATIVE_WINDOW_API_CPU, nullptr, false)); |
| ANativeWindow_Buffer buffer; |
| ASSERT_EQ(NO_ERROR, surface->lock(&buffer, nullptr)); |
| ASSERT_EQ(NO_ERROR, surface->unlockAndPost()); |
| |
| malicious->setExpectedSlot(1); |
| malicious->beMalicious(std::numeric_limits<int32_t>::min()); |
| ASSERT_EQ(FAILED_TRANSACTION, surface->lock(&buffer, nullptr)); |
| } |
| |
| TEST(Malicious, Bug36991414NegativeOne) { |
| sp<MaliciousBQP> malicious = getMaliciousBQP(); |
| sp<Surface> surface = new Surface(malicious); |
| |
| ASSERT_EQ(NO_ERROR, surface->connect(NATIVE_WINDOW_API_CPU, nullptr, false)); |
| ANativeWindow_Buffer buffer; |
| ASSERT_EQ(NO_ERROR, surface->lock(&buffer, nullptr)); |
| ASSERT_EQ(NO_ERROR, surface->unlockAndPost()); |
| |
| malicious->setExpectedSlot(1); |
| malicious->beMalicious(-1); |
| ASSERT_EQ(FAILED_TRANSACTION, surface->lock(&buffer, nullptr)); |
| } |
| |
| TEST(Malicious, Bug36991414NumSlots) { |
| sp<MaliciousBQP> malicious = getMaliciousBQP(); |
| sp<Surface> surface = new Surface(malicious); |
| |
| ASSERT_EQ(NO_ERROR, surface->connect(NATIVE_WINDOW_API_CPU, nullptr, false)); |
| ANativeWindow_Buffer buffer; |
| ASSERT_EQ(NO_ERROR, surface->lock(&buffer, nullptr)); |
| ASSERT_EQ(NO_ERROR, surface->unlockAndPost()); |
| |
| malicious->setExpectedSlot(1); |
| malicious->beMalicious(BufferQueueDefs::NUM_BUFFER_SLOTS); |
| ASSERT_EQ(FAILED_TRANSACTION, surface->lock(&buffer, nullptr)); |
| } |
| |
| } // namespace test |
| } // namespace android |