| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "quiche/http2/decoder/payload_decoders/settings_payload_decoder.h" |
| |
| #include <stddef.h> |
| |
| #include <vector> |
| |
| #include "quiche/http2/decoder/http2_frame_decoder_listener.h" |
| #include "quiche/http2/http2_constants.h" |
| #include "quiche/http2/test_tools/frame_parts.h" |
| #include "quiche/http2/test_tools/frame_parts_collector.h" |
| #include "quiche/http2/test_tools/http2_constants_test_util.h" |
| #include "quiche/http2/test_tools/http2_frame_builder.h" |
| #include "quiche/http2/test_tools/http2_random.h" |
| #include "quiche/http2/test_tools/http2_structures_test_util.h" |
| #include "quiche/http2/test_tools/payload_decoder_base_test_util.h" |
| #include "quiche/http2/test_tools/random_decoder_test_base.h" |
| #include "quiche/common/platform/api/quiche_logging.h" |
| #include "quiche/common/platform/api/quiche_test.h" |
| |
| namespace http2 { |
| namespace test { |
| |
| class SettingsPayloadDecoderPeer { |
| public: |
| static constexpr Http2FrameType FrameType() { |
| return Http2FrameType::SETTINGS; |
| } |
| |
| // Returns the mask of flags that affect the decoding of the payload (i.e. |
| // flags that that indicate the presence of certain fields or padding). |
| static constexpr uint8_t FlagsAffectingPayloadDecoding() { |
| return Http2FrameFlag::ACK; |
| } |
| }; |
| |
| namespace { |
| |
| struct Listener : public FramePartsCollector { |
| void OnSettingsStart(const Http2FrameHeader& header) override { |
| QUICHE_VLOG(1) << "OnSettingsStart: " << header; |
| EXPECT_EQ(Http2FrameType::SETTINGS, header.type) << header; |
| EXPECT_EQ(Http2FrameFlag(), header.flags) << header; |
| StartFrame(header)->OnSettingsStart(header); |
| } |
| |
| void OnSetting(const Http2SettingFields& setting_fields) override { |
| QUICHE_VLOG(1) << "Http2SettingFields: setting_fields=" << setting_fields; |
| CurrentFrame()->OnSetting(setting_fields); |
| } |
| |
| void OnSettingsEnd() override { |
| QUICHE_VLOG(1) << "OnSettingsEnd"; |
| EndFrame()->OnSettingsEnd(); |
| } |
| |
| void OnSettingsAck(const Http2FrameHeader& header) override { |
| QUICHE_VLOG(1) << "OnSettingsAck: " << header; |
| StartAndEndFrame(header)->OnSettingsAck(header); |
| } |
| |
| void OnFrameSizeError(const Http2FrameHeader& header) override { |
| QUICHE_VLOG(1) << "OnFrameSizeError: " << header; |
| FrameError(header)->OnFrameSizeError(header); |
| } |
| }; |
| |
| class SettingsPayloadDecoderTest |
| : public AbstractPayloadDecoderTest<SettingsPayloadDecoder, |
| SettingsPayloadDecoderPeer, Listener> { |
| protected: |
| Http2SettingFields RandSettingsFields() { |
| Http2SettingFields fields; |
| test::Randomize(&fields, RandomPtr()); |
| return fields; |
| } |
| }; |
| |
| // Confirm we get an error if the SETTINGS payload is not the correct size |
| // to hold exactly zero or more whole Http2SettingFields. |
| TEST_F(SettingsPayloadDecoderTest, SettingsWrongSize) { |
| auto approve_size = [](size_t size) { |
| // Should get an error if size is not an integral multiple of the size |
| // of one setting. |
| return 0 != (size % Http2SettingFields::EncodedSize()); |
| }; |
| Http2FrameBuilder fb; |
| fb.Append(RandSettingsFields()); |
| fb.Append(RandSettingsFields()); |
| fb.Append(RandSettingsFields()); |
| EXPECT_TRUE(VerifyDetectsFrameSizeError(0, fb.buffer(), approve_size)); |
| } |
| |
| // Confirm we get an error if the SETTINGS ACK payload is not empty. |
| TEST_F(SettingsPayloadDecoderTest, SettingsAkcWrongSize) { |
| auto approve_size = [](size_t size) { return size != 0; }; |
| Http2FrameBuilder fb; |
| fb.Append(RandSettingsFields()); |
| fb.Append(RandSettingsFields()); |
| fb.Append(RandSettingsFields()); |
| EXPECT_TRUE(VerifyDetectsFrameSizeError(Http2FrameFlag::ACK, fb.buffer(), |
| approve_size)); |
| } |
| |
| // SETTINGS must have stream_id==0, but the payload decoder doesn't check that. |
| TEST_F(SettingsPayloadDecoderTest, SettingsAck) { |
| for (int stream_id = 0; stream_id < 3; ++stream_id) { |
| Http2FrameHeader header(0, Http2FrameType::SETTINGS, |
| RandFlags() | Http2FrameFlag::ACK, stream_id); |
| set_frame_header(header); |
| FrameParts expected(header); |
| EXPECT_TRUE(DecodePayloadAndValidateSeveralWays("", expected)); |
| } |
| } |
| |
| // Try several values of each known SETTINGS parameter. |
| TEST_F(SettingsPayloadDecoderTest, OneRealSetting) { |
| std::vector<uint32_t> values = {0, 1, 0xffffffff, Random().Rand32()}; |
| for (auto param : AllHttp2SettingsParameters()) { |
| for (uint32_t value : values) { |
| Http2SettingFields fields(param, value); |
| Http2FrameBuilder fb; |
| fb.Append(fields); |
| Http2FrameHeader header(fb.size(), Http2FrameType::SETTINGS, RandFlags(), |
| RandStreamId()); |
| set_frame_header(header); |
| FrameParts expected(header); |
| expected.AppendSetting(fields); |
| EXPECT_TRUE(DecodePayloadAndValidateSeveralWays(fb.buffer(), expected)); |
| } |
| } |
| } |
| |
| // Decode a SETTINGS frame with lots of fields. |
| TEST_F(SettingsPayloadDecoderTest, ManySettings) { |
| const size_t num_settings = 100; |
| const size_t size = Http2SettingFields::EncodedSize() * num_settings; |
| Http2FrameHeader header(size, Http2FrameType::SETTINGS, |
| RandFlags(), // & ~Http2FrameFlag::ACK, |
| RandStreamId()); |
| set_frame_header(header); |
| FrameParts expected(header); |
| Http2FrameBuilder fb; |
| for (size_t n = 0; n < num_settings; ++n) { |
| Http2SettingFields fields(static_cast<Http2SettingsParameter>(n), |
| Random().Rand32()); |
| fb.Append(fields); |
| expected.AppendSetting(fields); |
| } |
| ASSERT_EQ(size, fb.size()); |
| EXPECT_TRUE(DecodePayloadAndValidateSeveralWays(fb.buffer(), expected)); |
| } |
| |
| } // namespace |
| } // namespace test |
| } // namespace http2 |