| // Copyright 2017 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 "http2/hpack/decoder/hpack_decoder.h" |
| |
| // Tests of HpackDecoder. |
| |
| #include <string> |
| #include <tuple> |
| #include <utility> |
| #include <vector> |
| |
| #include "http2/decoder/decode_buffer.h" |
| #include "http2/hpack/decoder/hpack_decoder_listener.h" |
| #include "http2/hpack/decoder/hpack_decoder_state.h" |
| #include "http2/hpack/decoder/hpack_decoder_tables.h" |
| #include "http2/hpack/http2_hpack_constants.h" |
| #include "http2/hpack/tools/hpack_block_builder.h" |
| #include "http2/hpack/tools/hpack_example.h" |
| #include "http2/http2_constants.h" |
| #include "http2/platform/api/http2_logging.h" |
| #include "http2/platform/api/http2_test_helpers.h" |
| #include "http2/test_tools/http2_random.h" |
| #include "http2/tools/random_util.h" |
| #include "common/platform/api/quiche_test.h" |
| |
| using ::testing::AssertionResult; |
| using ::testing::AssertionSuccess; |
| using ::testing::ElementsAreArray; |
| using ::testing::Eq; |
| |
| namespace http2 { |
| namespace test { |
| class HpackDecoderStatePeer { |
| public: |
| static HpackDecoderTables* GetDecoderTables(HpackDecoderState* state) { |
| return &state->decoder_tables_; |
| } |
| static void set_listener(HpackDecoderState* state, |
| HpackDecoderListener* listener) { |
| state->listener_ = listener; |
| } |
| }; |
| class HpackDecoderPeer { |
| public: |
| static HpackDecoderState* GetDecoderState(HpackDecoder* decoder) { |
| return &decoder->decoder_state_; |
| } |
| static HpackDecoderTables* GetDecoderTables(HpackDecoder* decoder) { |
| return HpackDecoderStatePeer::GetDecoderTables(GetDecoderState(decoder)); |
| } |
| }; |
| |
| namespace { |
| |
| typedef std::pair<std::string, std::string> HpackHeaderEntry; |
| typedef std::vector<HpackHeaderEntry> HpackHeaderEntries; |
| |
| // TODO(jamessynge): Create a ...test_utils.h file with the mock listener |
| // and with VerifyDynamicTableContents. |
| class MockHpackDecoderListener : public HpackDecoderListener { |
| public: |
| MOCK_METHOD(void, OnHeaderListStart, (), (override)); |
| MOCK_METHOD(void, |
| OnHeader, |
| (const std::string& name, const std::string& value), |
| (override)); |
| MOCK_METHOD(void, OnHeaderListEnd, (), (override)); |
| MOCK_METHOD(void, |
| OnHeaderErrorDetected, |
| (absl::string_view error_message), |
| (override)); |
| }; |
| |
| class HpackDecoderTest : public QuicheTestWithParam<bool>, |
| public HpackDecoderListener { |
| protected: |
| // Note that we initialize the random number generator with the same seed |
| // for each individual test, therefore the order in which the tests are |
| // executed does not effect the sequence produced by the RNG within any |
| // one test. |
| HpackDecoderTest() : decoder_(this, 4096) { |
| fragment_the_hpack_block_ = GetParam(); |
| } |
| ~HpackDecoderTest() override = default; |
| |
| void OnHeaderListStart() override { |
| ASSERT_FALSE(saw_start_); |
| ASSERT_FALSE(saw_end_); |
| saw_start_ = true; |
| header_entries_.clear(); |
| } |
| |
| // Called for each header name-value pair that is decoded, in the order they |
| // appear in the HPACK block. Multiple values for a given key will be emitted |
| // as multiple calls to OnHeader. |
| void OnHeader(const std::string& name, const std::string& value) override { |
| ASSERT_TRUE(saw_start_); |
| ASSERT_FALSE(saw_end_); |
| header_entries_.emplace_back(name, value); |
| } |
| |
| // OnHeaderBlockEnd is called after successfully decoding an HPACK block. Will |
| // only be called once per block, even if it extends into CONTINUATION frames. |
| // A callback method which notifies when the parser finishes handling a |
| // header block (i.e. the containing frame has the END_STREAM flag set). |
| // Also indicates the total number of bytes in this block. |
| void OnHeaderListEnd() override { |
| ASSERT_TRUE(saw_start_); |
| ASSERT_FALSE(saw_end_); |
| ASSERT_TRUE(error_messages_.empty()); |
| saw_end_ = true; |
| } |
| |
| // OnHeaderErrorDetected is called if an error is detected while decoding. |
| // error_message may be used in a GOAWAY frame as the Opaque Data. |
| void OnHeaderErrorDetected(absl::string_view error_message) override { |
| ASSERT_TRUE(saw_start_); |
| error_messages_.push_back(std::string(error_message)); |
| // No further callbacks should be made at this point, so replace 'this' as |
| // the listener with mock_listener_, which is a strict mock, so will |
| // generate an error for any calls. |
| HpackDecoderStatePeer::set_listener( |
| HpackDecoderPeer::GetDecoderState(&decoder_), &mock_listener_); |
| } |
| |
| AssertionResult DecodeBlock(absl::string_view block) { |
| HTTP2_VLOG(1) << "HpackDecoderTest::DecodeBlock"; |
| |
| VERIFY_FALSE(decoder_.DetectError()); |
| VERIFY_TRUE(error_messages_.empty()); |
| VERIFY_FALSE(saw_start_); |
| VERIFY_FALSE(saw_end_); |
| header_entries_.clear(); |
| |
| VERIFY_FALSE(decoder_.DetectError()); |
| VERIFY_TRUE(decoder_.StartDecodingBlock()); |
| VERIFY_FALSE(decoder_.DetectError()); |
| |
| if (fragment_the_hpack_block_) { |
| // See note in ctor regarding RNG. |
| while (!block.empty()) { |
| size_t fragment_size = random_.RandomSizeSkewedLow(block.size()); |
| DecodeBuffer db(block.substr(0, fragment_size)); |
| VERIFY_TRUE(decoder_.DecodeFragment(&db)); |
| VERIFY_EQ(0u, db.Remaining()); |
| block.remove_prefix(fragment_size); |
| } |
| } else { |
| DecodeBuffer db(block); |
| VERIFY_TRUE(decoder_.DecodeFragment(&db)); |
| VERIFY_EQ(0u, db.Remaining()); |
| } |
| VERIFY_FALSE(decoder_.DetectError()); |
| |
| VERIFY_TRUE(decoder_.EndDecodingBlock()); |
| if (saw_end_) { |
| VERIFY_FALSE(decoder_.DetectError()); |
| VERIFY_TRUE(error_messages_.empty()); |
| } else { |
| VERIFY_TRUE(decoder_.DetectError()); |
| VERIFY_FALSE(error_messages_.empty()); |
| } |
| |
| saw_start_ = saw_end_ = false; |
| return AssertionSuccess(); |
| } |
| |
| const HpackDecoderTables& GetDecoderTables() { |
| return *HpackDecoderPeer::GetDecoderTables(&decoder_); |
| } |
| const HpackStringPair* Lookup(size_t index) { |
| return GetDecoderTables().Lookup(index); |
| } |
| size_t current_header_table_size() { |
| return GetDecoderTables().current_header_table_size(); |
| } |
| size_t header_table_size_limit() { |
| return GetDecoderTables().header_table_size_limit(); |
| } |
| void set_header_table_size_limit(size_t size) { |
| HpackDecoderPeer::GetDecoderTables(&decoder_)->DynamicTableSizeUpdate(size); |
| } |
| |
| // dynamic_index is one-based, because that is the way RFC 7541 shows it. |
| AssertionResult VerifyEntry(size_t dynamic_index, |
| const char* name, |
| const char* value) { |
| const HpackStringPair* entry = |
| Lookup(dynamic_index + kFirstDynamicTableIndex - 1); |
| VERIFY_NE(entry, nullptr); |
| VERIFY_EQ(entry->name, name); |
| VERIFY_EQ(entry->value, value); |
| return AssertionSuccess(); |
| } |
| AssertionResult VerifyNoEntry(size_t dynamic_index) { |
| const HpackStringPair* entry = |
| Lookup(dynamic_index + kFirstDynamicTableIndex - 1); |
| VERIFY_EQ(entry, nullptr); |
| return AssertionSuccess(); |
| } |
| AssertionResult VerifyDynamicTableContents( |
| const std::vector<std::pair<const char*, const char*>>& entries) { |
| size_t index = 1; |
| for (const auto& entry : entries) { |
| VERIFY_SUCCESS(VerifyEntry(index, entry.first, entry.second)); |
| ++index; |
| } |
| VERIFY_SUCCESS(VerifyNoEntry(index)); |
| return AssertionSuccess(); |
| } |
| |
| Http2Random random_; |
| HpackDecoder decoder_; |
| testing::StrictMock<MockHpackDecoderListener> mock_listener_; |
| HpackHeaderEntries header_entries_; |
| std::vector<std::string> error_messages_; |
| bool fragment_the_hpack_block_; |
| bool saw_start_ = false; |
| bool saw_end_ = false; |
| }; |
| INSTANTIATE_TEST_SUITE_P(AllWays, HpackDecoderTest, ::testing::Bool()); |
| |
| // Test based on RFC 7541, section C.3: Request Examples without Huffman Coding. |
| // This section shows several consecutive header lists, corresponding to HTTP |
| // requests, on the same connection. |
| // http://httpwg.org/specs/rfc7541.html#rfc.section.C.3 |
| TEST_P(HpackDecoderTest, C3_RequestExamples) { |
| // C.3.1 First Request |
| std::string hpack_block = HpackExampleToStringOrDie(R"( |
| 82 | == Indexed - Add == |
| | idx = 2 |
| | -> :method: GET |
| 86 | == Indexed - Add == |
| | idx = 6 |
| | -> :scheme: http |
| 84 | == Indexed - Add == |
| | idx = 4 |
| | -> :path: / |
| 41 | == Literal indexed == |
| | Indexed name (idx = 1) |
| | :authority |
| 0f | Literal value (len = 15) |
| 7777 772e 6578 616d 706c 652e 636f 6d | www.example.com |
| | -> :authority: |
| | www.example.com |
| )"); |
| EXPECT_TRUE(DecodeBlock(hpack_block)); |
| ASSERT_THAT(header_entries_, |
| ElementsAreArray({ |
| HpackHeaderEntry{":method", "GET"}, |
| HpackHeaderEntry{":scheme", "http"}, |
| HpackHeaderEntry{":path", "/"}, |
| HpackHeaderEntry{":authority", "www.example.com"}, |
| })); |
| |
| // Dynamic Table (after decoding): |
| // |
| // [ 1] (s = 57) :authority: www.example.com |
| // Table size: 57 |
| ASSERT_TRUE(VerifyDynamicTableContents({{":authority", "www.example.com"}})); |
| ASSERT_EQ(57u, current_header_table_size()); |
| |
| // C.3.2 Second Request |
| hpack_block = HpackExampleToStringOrDie(R"( |
| 82 | == Indexed - Add == |
| | idx = 2 |
| | -> :method: GET |
| 86 | == Indexed - Add == |
| | idx = 6 |
| | -> :scheme: http |
| 84 | == Indexed - Add == |
| | idx = 4 |
| | -> :path: / |
| be | == Indexed - Add == |
| | idx = 62 |
| | -> :authority: |
| | www.example.com |
| 58 | == Literal indexed == |
| | Indexed name (idx = 24) |
| | cache-control |
| 08 | Literal value (len = 8) |
| 6e6f 2d63 6163 6865 | no-cache |
| | -> cache-control: no-cache |
| )"); |
| EXPECT_TRUE(DecodeBlock(hpack_block)); |
| ASSERT_THAT(header_entries_, |
| ElementsAreArray({ |
| HpackHeaderEntry{":method", "GET"}, |
| HpackHeaderEntry{":scheme", "http"}, |
| HpackHeaderEntry{":path", "/"}, |
| HpackHeaderEntry{":authority", "www.example.com"}, |
| HpackHeaderEntry{"cache-control", "no-cache"}, |
| })); |
| |
| // Dynamic Table (after decoding): |
| // |
| // [ 1] (s = 53) cache-control: no-cache |
| // [ 2] (s = 57) :authority: www.example.com |
| // Table size: 110 |
| ASSERT_TRUE(VerifyDynamicTableContents( |
| {{"cache-control", "no-cache"}, {":authority", "www.example.com"}})); |
| ASSERT_EQ(110u, current_header_table_size()); |
| |
| // C.3.2 Third Request |
| hpack_block = HpackExampleToStringOrDie(R"( |
| 82 | == Indexed - Add == |
| | idx = 2 |
| | -> :method: GET |
| 87 | == Indexed - Add == |
| | idx = 7 |
| | -> :scheme: https |
| 85 | == Indexed - Add == |
| | idx = 5 |
| | -> :path: /index.html |
| bf | == Indexed - Add == |
| | idx = 63 |
| | -> :authority: |
| | www.example.com |
| 40 | == Literal indexed == |
| 0a | Literal name (len = 10) |
| 6375 7374 6f6d 2d6b 6579 | custom-key |
| 0c | Literal value (len = 12) |
| 6375 7374 6f6d 2d76 616c 7565 | custom-value |
| | -> custom-key: |
| | custom-value |
| )"); |
| EXPECT_TRUE(DecodeBlock(hpack_block)); |
| ASSERT_THAT(header_entries_, |
| ElementsAreArray({ |
| HpackHeaderEntry{":method", "GET"}, |
| HpackHeaderEntry{":scheme", "https"}, |
| HpackHeaderEntry{":path", "/index.html"}, |
| HpackHeaderEntry{":authority", "www.example.com"}, |
| HpackHeaderEntry{"custom-key", "custom-value"}, |
| })); |
| |
| // Dynamic Table (after decoding): |
| // |
| // [ 1] (s = 54) custom-key: custom-value |
| // [ 2] (s = 53) cache-control: no-cache |
| // [ 3] (s = 57) :authority: www.example.com |
| // Table size: 164 |
| ASSERT_TRUE(VerifyDynamicTableContents({{"custom-key", "custom-value"}, |
| {"cache-control", "no-cache"}, |
| {":authority", "www.example.com"}})); |
| ASSERT_EQ(164u, current_header_table_size()); |
| } |
| |
| // Test based on RFC 7541, section C.4 Request Examples with Huffman Coding. |
| // This section shows the same examples as the previous section but uses |
| // Huffman encoding for the literal values. |
| // http://httpwg.org/specs/rfc7541.html#rfc.section.C.4 |
| TEST_P(HpackDecoderTest, C4_RequestExamplesWithHuffmanEncoding) { |
| // C.4.1 First Request |
| std::string hpack_block = HpackExampleToStringOrDie(R"( |
| 82 | == Indexed - Add == |
| | idx = 2 |
| | -> :method: GET |
| 86 | == Indexed - Add == |
| | idx = 6 |
| | -> :scheme: http |
| 84 | == Indexed - Add == |
| | idx = 4 |
| | -> :path: / |
| 41 | == Literal indexed == |
| | Indexed name (idx = 1) |
| | :authority |
| 8c | Literal value (len = 12) |
| | Huffman encoded: |
| f1e3 c2e5 f23a 6ba0 ab90 f4ff | .....:k..... |
| | Decoded: |
| | www.example.com |
| | -> :authority: |
| | www.example.com |
| )"); |
| EXPECT_TRUE(DecodeBlock(hpack_block)); |
| ASSERT_THAT(header_entries_, |
| ElementsAreArray({ |
| HpackHeaderEntry{":method", "GET"}, |
| HpackHeaderEntry{":scheme", "http"}, |
| HpackHeaderEntry{":path", "/"}, |
| HpackHeaderEntry{":authority", "www.example.com"}, |
| })); |
| |
| // Dynamic Table (after decoding): |
| // |
| // [ 1] (s = 57) :authority: www.example.com |
| // Table size: 57 |
| ASSERT_TRUE(VerifyDynamicTableContents({{":authority", "www.example.com"}})); |
| ASSERT_EQ(57u, current_header_table_size()); |
| |
| // C.4.2 Second Request |
| hpack_block = HpackExampleToStringOrDie(R"( |
| 82 | == Indexed - Add == |
| | idx = 2 |
| | -> :method: GET |
| 86 | == Indexed - Add == |
| | idx = 6 |
| | -> :scheme: http |
| 84 | == Indexed - Add == |
| | idx = 4 |
| | -> :path: / |
| be | == Indexed - Add == |
| | idx = 62 |
| | -> :authority: |
| | www.example.com |
| 58 | == Literal indexed == |
| | Indexed name (idx = 24) |
| | cache-control |
| 86 | Literal value (len = 6) |
| | Huffman encoded: |
| a8eb 1064 9cbf | ...d.. |
| | Decoded: |
| | no-cache |
| | -> cache-control: no-cache |
| )"); |
| EXPECT_TRUE(DecodeBlock(hpack_block)); |
| ASSERT_THAT(header_entries_, |
| ElementsAreArray({ |
| HpackHeaderEntry{":method", "GET"}, |
| HpackHeaderEntry{":scheme", "http"}, |
| HpackHeaderEntry{":path", "/"}, |
| HpackHeaderEntry{":authority", "www.example.com"}, |
| HpackHeaderEntry{"cache-control", "no-cache"}, |
| })); |
| |
| // Dynamic Table (after decoding): |
| // |
| // [ 1] (s = 53) cache-control: no-cache |
| // [ 2] (s = 57) :authority: www.example.com |
| // Table size: 110 |
| ASSERT_TRUE(VerifyDynamicTableContents( |
| {{"cache-control", "no-cache"}, {":authority", "www.example.com"}})); |
| ASSERT_EQ(110u, current_header_table_size()); |
| |
| // C.4.2 Third Request |
| hpack_block = HpackExampleToStringOrDie(R"( |
| 82 | == Indexed - Add == |
| | idx = 2 |
| | -> :method: GET |
| 87 | == Indexed - Add == |
| | idx = 7 |
| | -> :scheme: https |
| 85 | == Indexed - Add == |
| | idx = 5 |
| | -> :path: /index.html |
| bf | == Indexed - Add == |
| | idx = 63 |
| | -> :authority: |
| | www.example.com |
| 40 | == Literal indexed == |
| 88 | Literal name (len = 8) |
| | Huffman encoded: |
| 25a8 49e9 5ba9 7d7f | %.I.[.}. |
| | Decoded: |
| | custom-key |
| 89 | Literal value (len = 9) |
| | Huffman encoded: |
| 25a8 49e9 5bb8 e8b4 bf | %.I.[.... |
| | Decoded: |
| | custom-value |
| | -> custom-key: |
| | custom-value |
| )"); |
| EXPECT_TRUE(DecodeBlock(hpack_block)); |
| ASSERT_THAT(header_entries_, |
| ElementsAreArray({ |
| HpackHeaderEntry{":method", "GET"}, |
| HpackHeaderEntry{":scheme", "https"}, |
| HpackHeaderEntry{":path", "/index.html"}, |
| HpackHeaderEntry{":authority", "www.example.com"}, |
| HpackHeaderEntry{"custom-key", "custom-value"}, |
| })); |
| |
| // Dynamic Table (after decoding): |
| // |
| // [ 1] (s = 54) custom-key: custom-value |
| // [ 2] (s = 53) cache-control: no-cache |
| // [ 3] (s = 57) :authority: www.example.com |
| // Table size: 164 |
| ASSERT_TRUE(VerifyDynamicTableContents({{"custom-key", "custom-value"}, |
| {"cache-control", "no-cache"}, |
| {":authority", "www.example.com"}})); |
| ASSERT_EQ(164u, current_header_table_size()); |
| } |
| |
| // Test based on RFC 7541, section C.5: Response Examples without Huffman |
| // Coding. This section shows several consecutive header lists, corresponding |
| // to HTTP responses, on the same connection. The HTTP/2 setting parameter |
| // SETTINGS_HEADER_TABLE_SIZE is set to the value of 256 octets, causing |
| // some evictions to occur. |
| // http://httpwg.org/specs/rfc7541.html#rfc.section.C.5 |
| TEST_P(HpackDecoderTest, C5_ResponseExamples) { |
| set_header_table_size_limit(256); |
| |
| // C.5.1 First Response |
| // |
| // Header list to encode: |
| // |
| // :status: 302 |
| // cache-control: private |
| // date: Mon, 21 Oct 2013 20:13:21 GMT |
| // location: https://www.example.com |
| |
| std::string hpack_block = HpackExampleToStringOrDie(R"( |
| 48 | == Literal indexed == |
| | Indexed name (idx = 8) |
| | :status |
| 03 | Literal value (len = 3) |
| 3330 32 | 302 |
| | -> :status: 302 |
| 58 | == Literal indexed == |
| | Indexed name (idx = 24) |
| | cache-control |
| 07 | Literal value (len = 7) |
| 7072 6976 6174 65 | private |
| | -> cache-control: private |
| 61 | == Literal indexed == |
| | Indexed name (idx = 33) |
| | date |
| 1d | Literal value (len = 29) |
| 4d6f 6e2c 2032 3120 4f63 7420 3230 3133 | Mon, 21 Oct 2013 |
| 2032 303a 3133 3a32 3120 474d 54 | 20:13:21 GMT |
| | -> date: Mon, 21 Oct 2013 |
| | 20:13:21 GMT |
| 6e | == Literal indexed == |
| | Indexed name (idx = 46) |
| | location |
| 17 | Literal value (len = 23) |
| 6874 7470 733a 2f2f 7777 772e 6578 616d | https://www.exam |
| 706c 652e 636f 6d | ple.com |
| | -> location: |
| | https://www.example.com |
| )"); |
| EXPECT_TRUE(DecodeBlock(hpack_block)); |
| ASSERT_THAT(header_entries_, |
| ElementsAreArray({ |
| HpackHeaderEntry{":status", "302"}, |
| HpackHeaderEntry{"cache-control", "private"}, |
| HpackHeaderEntry{"date", "Mon, 21 Oct 2013 20:13:21 GMT"}, |
| HpackHeaderEntry{"location", "https://www.example.com"}, |
| })); |
| |
| // Dynamic Table (after decoding): |
| // |
| // [ 1] (s = 63) location: https://www.example.com |
| // [ 2] (s = 65) date: Mon, 21 Oct 2013 20:13:21 GMT |
| // [ 3] (s = 52) cache-control: private |
| // [ 4] (s = 42) :status: 302 |
| // Table size: 222 |
| ASSERT_TRUE( |
| VerifyDynamicTableContents({{"location", "https://www.example.com"}, |
| {"date", "Mon, 21 Oct 2013 20:13:21 GMT"}, |
| {"cache-control", "private"}, |
| {":status", "302"}})); |
| ASSERT_EQ(222u, current_header_table_size()); |
| |
| // C.5.2 Second Response |
| // |
| // The (":status", "302") header field is evicted from the dynamic table to |
| // free space to allow adding the (":status", "307") header field. |
| // |
| // Header list to encode: |
| // |
| // :status: 307 |
| // cache-control: private |
| // date: Mon, 21 Oct 2013 20:13:21 GMT |
| // location: https://www.example.com |
| |
| hpack_block = HpackExampleToStringOrDie(R"( |
| 48 | == Literal indexed == |
| | Indexed name (idx = 8) |
| | :status |
| 03 | Literal value (len = 3) |
| 3330 37 | 307 |
| | - evict: :status: 302 |
| | -> :status: 307 |
| c1 | == Indexed - Add == |
| | idx = 65 |
| | -> cache-control: private |
| c0 | == Indexed - Add == |
| | idx = 64 |
| | -> date: Mon, 21 Oct 2013 |
| | 20:13:21 GMT |
| bf | == Indexed - Add == |
| | idx = 63 |
| | -> location: |
| | https://www.example.com |
| )"); |
| EXPECT_TRUE(DecodeBlock(hpack_block)); |
| ASSERT_THAT(header_entries_, |
| ElementsAreArray({ |
| HpackHeaderEntry{":status", "307"}, |
| HpackHeaderEntry{"cache-control", "private"}, |
| HpackHeaderEntry{"date", "Mon, 21 Oct 2013 20:13:21 GMT"}, |
| HpackHeaderEntry{"location", "https://www.example.com"}, |
| })); |
| |
| // Dynamic Table (after decoding): |
| // |
| // [ 1] (s = 42) :status: 307 |
| // [ 2] (s = 63) location: https://www.example.com |
| // [ 3] (s = 65) date: Mon, 21 Oct 2013 20:13:21 GMT |
| // [ 4] (s = 52) cache-control: private |
| // Table size: 222 |
| |
| ASSERT_TRUE( |
| VerifyDynamicTableContents({{":status", "307"}, |
| {"location", "https://www.example.com"}, |
| {"date", "Mon, 21 Oct 2013 20:13:21 GMT"}, |
| {"cache-control", "private"}})); |
| ASSERT_EQ(222u, current_header_table_size()); |
| |
| // C.5.3 Third Response |
| // |
| // Several header fields are evicted from the dynamic table during the |
| // processing of this header list. |
| // |
| // Header list to encode: |
| // |
| // :status: 200 |
| // cache-control: private |
| // date: Mon, 21 Oct 2013 20:13:22 GMT |
| // location: https://www.example.com |
| // content-encoding: gzip |
| // set-cookie: foo=ASDJKHQKBZXOQWEOPIUAXQWEOIU; max-age=3600; version=1 |
| hpack_block = HpackExampleToStringOrDie(R"( |
| 88 | == Indexed - Add == |
| | idx = 8 |
| | -> :status: 200 |
| c1 | == Indexed - Add == |
| | idx = 65 |
| | -> cache-control: private |
| 61 | == Literal indexed == |
| | Indexed name (idx = 33) |
| | date |
| 1d | Literal value (len = 29) |
| 4d6f 6e2c 2032 3120 4f63 7420 3230 3133 | Mon, 21 Oct 2013 |
| 2032 303a 3133 3a32 3220 474d 54 | 20:13:22 GMT |
| | - evict: cache-control: |
| | private |
| | -> date: Mon, 21 Oct 2013 |
| | 20:13:22 GMT |
| c0 | == Indexed - Add == |
| | idx = 64 |
| | -> location: |
| | https://www.example.com |
| 5a | == Literal indexed == |
| | Indexed name (idx = 26) |
| | content-encoding |
| 04 | Literal value (len = 4) |
| 677a 6970 | gzip |
| | - evict: date: Mon, 21 Oct |
| | 2013 20:13:21 GMT |
| | -> content-encoding: gzip |
| 77 | == Literal indexed == |
| | Indexed name (idx = 55) |
| | set-cookie |
| 38 | Literal value (len = 56) |
| 666f 6f3d 4153 444a 4b48 514b 425a 584f | foo=ASDJKHQKBZXO |
| 5157 454f 5049 5541 5851 5745 4f49 553b | QWEOPIUAXQWEOIU; |
| 206d 6178 2d61 6765 3d33 3630 303b 2076 | max-age=3600; v |
| 6572 7369 6f6e 3d31 | ersion=1 |
| | - evict: location: |
| | https://www.example.com |
| | - evict: :status: 307 |
| | -> set-cookie: foo=ASDJKHQ |
| | KBZXOQWEOPIUAXQWEOIU; ma |
| | x-age=3600; version=1 |
| )"); |
| EXPECT_TRUE(DecodeBlock(hpack_block)); |
| ASSERT_THAT( |
| header_entries_, |
| ElementsAreArray({ |
| HpackHeaderEntry{":status", "200"}, |
| HpackHeaderEntry{"cache-control", "private"}, |
| HpackHeaderEntry{"date", "Mon, 21 Oct 2013 20:13:22 GMT"}, |
| HpackHeaderEntry{"location", "https://www.example.com"}, |
| HpackHeaderEntry{"content-encoding", "gzip"}, |
| HpackHeaderEntry{ |
| "set-cookie", |
| "foo=ASDJKHQKBZXOQWEOPIUAXQWEOIU; max-age=3600; version=1"}, |
| })); |
| |
| // Dynamic Table (after decoding): |
| // |
| // [ 1] (s = 98) set-cookie: foo=ASDJKHQKBZXOQWEOPIUAXQWEOIU; |
| // max-age=3600; version=1 |
| // [ 2] (s = 52) content-encoding: gzip |
| // [ 3] (s = 65) date: Mon, 21 Oct 2013 20:13:22 GMT |
| // Table size: 215 |
| ASSERT_TRUE(VerifyDynamicTableContents( |
| {{"set-cookie", |
| "foo=ASDJKHQKBZXOQWEOPIUAXQWEOIU; max-age=3600; version=1"}, |
| {"content-encoding", "gzip"}, |
| {"date", "Mon, 21 Oct 2013 20:13:22 GMT"}})); |
| ASSERT_EQ(215u, current_header_table_size()); |
| } |
| |
| // Test based on RFC 7541, section C.6: Response Examples with Huffman Coding. |
| // This section shows the same examples as the previous section but uses Huffman |
| // encoding for the literal values. The HTTP/2 setting parameter |
| // SETTINGS_HEADER_TABLE_SIZE is set to the value of 256 octets, causing some |
| // evictions to occur. The eviction mechanism uses the length of the decoded |
| // literal values, so the same evictions occur as in the previous section. |
| // http://httpwg.org/specs/rfc7541.html#rfc.section.C.6 |
| TEST_P(HpackDecoderTest, C6_ResponseExamplesWithHuffmanEncoding) { |
| set_header_table_size_limit(256); |
| |
| // C.5.1 First Response |
| // |
| // Header list to encode: |
| // |
| // :status: 302 |
| // cache-control: private |
| // date: Mon, 21 Oct 2013 20:13:21 GMT |
| // location: https://www.example.com |
| std::string hpack_block = HpackExampleToStringOrDie(R"( |
| 48 | == Literal indexed == |
| | Indexed name (idx = 8) |
| | :status |
| 03 | Literal value (len = 3) |
| 3330 32 | 302 |
| | -> :status: 302 |
| 58 | == Literal indexed == |
| | Indexed name (idx = 24) |
| | cache-control |
| 07 | Literal value (len = 7) |
| 7072 6976 6174 65 | private |
| | -> cache-control: private |
| 61 | == Literal indexed == |
| | Indexed name (idx = 33) |
| | date |
| 1d | Literal value (len = 29) |
| 4d6f 6e2c 2032 3120 4f63 7420 3230 3133 | Mon, 21 Oct 2013 |
| 2032 303a 3133 3a32 3120 474d 54 | 20:13:21 GMT |
| | -> date: Mon, 21 Oct 2013 |
| | 20:13:21 GMT |
| 6e | == Literal indexed == |
| | Indexed name (idx = 46) |
| | location |
| 17 | Literal value (len = 23) |
| 6874 7470 733a 2f2f 7777 772e 6578 616d | https://www.exam |
| 706c 652e 636f 6d | ple.com |
| | -> location: |
| | https://www.example.com |
| )"); |
| EXPECT_TRUE(DecodeBlock(hpack_block)); |
| ASSERT_THAT(header_entries_, |
| ElementsAreArray({ |
| HpackHeaderEntry{":status", "302"}, |
| HpackHeaderEntry{"cache-control", "private"}, |
| HpackHeaderEntry{"date", "Mon, 21 Oct 2013 20:13:21 GMT"}, |
| HpackHeaderEntry{"location", "https://www.example.com"}, |
| })); |
| |
| // Dynamic Table (after decoding): |
| // |
| // [ 1] (s = 63) location: https://www.example.com |
| // [ 2] (s = 65) date: Mon, 21 Oct 2013 20:13:21 GMT |
| // [ 3] (s = 52) cache-control: private |
| // [ 4] (s = 42) :status: 302 |
| // Table size: 222 |
| ASSERT_TRUE( |
| VerifyDynamicTableContents({{"location", "https://www.example.com"}, |
| {"date", "Mon, 21 Oct 2013 20:13:21 GMT"}, |
| {"cache-control", "private"}, |
| {":status", "302"}})); |
| ASSERT_EQ(222u, current_header_table_size()); |
| |
| // C.5.2 Second Response |
| // |
| // The (":status", "302") header field is evicted from the dynamic table to |
| // free space to allow adding the (":status", "307") header field. |
| // |
| // Header list to encode: |
| // |
| // :status: 307 |
| // cache-control: private |
| // date: Mon, 21 Oct 2013 20:13:21 GMT |
| // location: https://www.example.com |
| hpack_block = HpackExampleToStringOrDie(R"( |
| 48 | == Literal indexed == |
| | Indexed name (idx = 8) |
| | :status |
| 03 | Literal value (len = 3) |
| 3330 37 | 307 |
| | - evict: :status: 302 |
| | -> :status: 307 |
| c1 | == Indexed - Add == |
| | idx = 65 |
| | -> cache-control: private |
| c0 | == Indexed - Add == |
| | idx = 64 |
| | -> date: Mon, 21 Oct 2013 |
| | 20:13:21 GMT |
| bf | == Indexed - Add == |
| | idx = 63 |
| | -> location: |
| | https://www.example.com |
| )"); |
| EXPECT_TRUE(DecodeBlock(hpack_block)); |
| ASSERT_THAT(header_entries_, |
| ElementsAreArray({ |
| HpackHeaderEntry{":status", "307"}, |
| HpackHeaderEntry{"cache-control", "private"}, |
| HpackHeaderEntry{"date", "Mon, 21 Oct 2013 20:13:21 GMT"}, |
| HpackHeaderEntry{"location", "https://www.example.com"}, |
| })); |
| |
| // Dynamic Table (after decoding): |
| // |
| // [ 1] (s = 42) :status: 307 |
| // [ 2] (s = 63) location: https://www.example.com |
| // [ 3] (s = 65) date: Mon, 21 Oct 2013 20:13:21 GMT |
| // [ 4] (s = 52) cache-control: private |
| // Table size: 222 |
| ASSERT_TRUE( |
| VerifyDynamicTableContents({{":status", "307"}, |
| {"location", "https://www.example.com"}, |
| {"date", "Mon, 21 Oct 2013 20:13:21 GMT"}, |
| {"cache-control", "private"}})); |
| ASSERT_EQ(222u, current_header_table_size()); |
| |
| // C.5.3 Third Response |
| // |
| // Several header fields are evicted from the dynamic table during the |
| // processing of this header list. |
| // |
| // Header list to encode: |
| // |
| // :status: 200 |
| // cache-control: private |
| // date: Mon, 21 Oct 2013 20:13:22 GMT |
| // location: https://www.example.com |
| // content-encoding: gzip |
| // set-cookie: foo=ASDJKHQKBZXOQWEOPIUAXQWEOIU; max-age=3600; version=1 |
| hpack_block = HpackExampleToStringOrDie(R"( |
| 88 | == Indexed - Add == |
| | idx = 8 |
| | -> :status: 200 |
| c1 | == Indexed - Add == |
| | idx = 65 |
| | -> cache-control: private |
| 61 | == Literal indexed == |
| | Indexed name (idx = 33) |
| | date |
| 1d | Literal value (len = 29) |
| 4d6f 6e2c 2032 3120 4f63 7420 3230 3133 | Mon, 21 Oct 2013 |
| 2032 303a 3133 3a32 3220 474d 54 | 20:13:22 GMT |
| | - evict: cache-control: |
| | private |
| | -> date: Mon, 21 Oct 2013 |
| | 20:13:22 GMT |
| c0 | == Indexed - Add == |
| | idx = 64 |
| | -> location: |
| | https://www.example.com |
| 5a | == Literal indexed == |
| | Indexed name (idx = 26) |
| | content-encoding |
| 04 | Literal value (len = 4) |
| 677a 6970 | gzip |
| | - evict: date: Mon, 21 Oct |
| | 2013 20:13:21 GMT |
| | -> content-encoding: gzip |
| 77 | == Literal indexed == |
| | Indexed name (idx = 55) |
| | set-cookie |
| 38 | Literal value (len = 56) |
| 666f 6f3d 4153 444a 4b48 514b 425a 584f | foo=ASDJKHQKBZXO |
| 5157 454f 5049 5541 5851 5745 4f49 553b | QWEOPIUAXQWEOIU; |
| 206d 6178 2d61 6765 3d33 3630 303b 2076 | max-age=3600; v |
| 6572 7369 6f6e 3d31 | ersion=1 |
| | - evict: location: |
| | https://www.example.com |
| | - evict: :status: 307 |
| | -> set-cookie: foo=ASDJKHQ |
| | KBZXOQWEOPIUAXQWEOIU; ma |
| | x-age=3600; version=1 |
| )"); |
| EXPECT_TRUE(DecodeBlock(hpack_block)); |
| ASSERT_THAT( |
| header_entries_, |
| ElementsAreArray({ |
| HpackHeaderEntry{":status", "200"}, |
| HpackHeaderEntry{"cache-control", "private"}, |
| HpackHeaderEntry{"date", "Mon, 21 Oct 2013 20:13:22 GMT"}, |
| HpackHeaderEntry{"location", "https://www.example.com"}, |
| HpackHeaderEntry{"content-encoding", "gzip"}, |
| HpackHeaderEntry{ |
| "set-cookie", |
| "foo=ASDJKHQKBZXOQWEOPIUAXQWEOIU; max-age=3600; version=1"}, |
| })); |
| |
| // Dynamic Table (after decoding): |
| // |
| // [ 1] (s = 98) set-cookie: foo=ASDJKHQKBZXOQWEOPIUAXQWEOIU; |
| // max-age=3600; version=1 |
| // [ 2] (s = 52) content-encoding: gzip |
| // [ 3] (s = 65) date: Mon, 21 Oct 2013 20:13:22 GMT |
| // Table size: 215 |
| ASSERT_TRUE(VerifyDynamicTableContents( |
| {{"set-cookie", |
| "foo=ASDJKHQKBZXOQWEOPIUAXQWEOIU; max-age=3600; version=1"}, |
| {"content-encoding", "gzip"}, |
| {"date", "Mon, 21 Oct 2013 20:13:22 GMT"}})); |
| ASSERT_EQ(215u, current_header_table_size()); |
| } |
| |
| // Confirm that the table size can be changed, but at most twice. |
| TEST_P(HpackDecoderTest, ProcessesOptionalTableSizeUpdates) { |
| EXPECT_EQ(Http2SettingsInfo::DefaultHeaderTableSize(), |
| header_table_size_limit()); |
| // One update allowed. |
| { |
| HpackBlockBuilder hbb; |
| hbb.AppendDynamicTableSizeUpdate(3000); |
| EXPECT_TRUE(DecodeBlock(hbb.buffer())); |
| EXPECT_EQ(3000u, header_table_size_limit()); |
| EXPECT_EQ(0u, current_header_table_size()); |
| EXPECT_TRUE(header_entries_.empty()); |
| } |
| // Two updates allowed. |
| { |
| HpackBlockBuilder hbb; |
| hbb.AppendDynamicTableSizeUpdate(2000); |
| hbb.AppendDynamicTableSizeUpdate(2500); |
| EXPECT_TRUE(DecodeBlock(hbb.buffer())); |
| EXPECT_EQ(2500u, header_table_size_limit()); |
| EXPECT_EQ(0u, current_header_table_size()); |
| EXPECT_TRUE(header_entries_.empty()); |
| } |
| // A third update in the same HPACK block is rejected, so the final |
| // size is 1000, not 500. |
| { |
| HpackBlockBuilder hbb; |
| hbb.AppendDynamicTableSizeUpdate(1500); |
| hbb.AppendDynamicTableSizeUpdate(1000); |
| hbb.AppendDynamicTableSizeUpdate(500); |
| EXPECT_FALSE(DecodeBlock(hbb.buffer())); |
| EXPECT_EQ(HpackDecodingError::kDynamicTableSizeUpdateNotAllowed, |
| decoder_.error()); |
| EXPECT_EQ(1u, error_messages_.size()); |
| EXPECT_THAT(error_messages_[0], |
| Eq("Dynamic table size update not allowed")); |
| EXPECT_EQ(1000u, header_table_size_limit()); |
| EXPECT_EQ(0u, current_header_table_size()); |
| EXPECT_TRUE(header_entries_.empty()); |
| } |
| // An error has been detected, so calls to HpackDecoder::DecodeFragment |
| // should return immediately. |
| DecodeBuffer db("\x80"); |
| EXPECT_FALSE(decoder_.DecodeFragment(&db)); |
| EXPECT_EQ(0u, db.Offset()); |
| EXPECT_EQ(1u, error_messages_.size()); |
| } |
| |
| // Confirm that the table size can be changed when required, but at most twice. |
| TEST_P(HpackDecoderTest, ProcessesRequiredTableSizeUpdate) { |
| EXPECT_EQ(4096u, decoder_.GetCurrentHeaderTableSizeSetting()); |
| // One update required, two allowed, one provided, followed by a header. |
| decoder_.ApplyHeaderTableSizeSetting(1024); |
| decoder_.ApplyHeaderTableSizeSetting(2048); |
| EXPECT_EQ(Http2SettingsInfo::DefaultHeaderTableSize(), |
| header_table_size_limit()); |
| EXPECT_EQ(2048u, decoder_.GetCurrentHeaderTableSizeSetting()); |
| { |
| HpackBlockBuilder hbb; |
| hbb.AppendDynamicTableSizeUpdate(1024); |
| hbb.AppendIndexedHeader(4); // :path: / |
| EXPECT_TRUE(DecodeBlock(hbb.buffer())); |
| EXPECT_THAT(header_entries_, |
| ElementsAreArray({HpackHeaderEntry{":path", "/"}})); |
| EXPECT_EQ(1024u, header_table_size_limit()); |
| EXPECT_EQ(0u, current_header_table_size()); |
| } |
| // One update required, two allowed, two provided, followed by a header. |
| decoder_.ApplyHeaderTableSizeSetting(1000); |
| decoder_.ApplyHeaderTableSizeSetting(1500); |
| EXPECT_EQ(1500u, decoder_.GetCurrentHeaderTableSizeSetting()); |
| { |
| HpackBlockBuilder hbb; |
| hbb.AppendDynamicTableSizeUpdate(500); |
| hbb.AppendDynamicTableSizeUpdate(1250); |
| hbb.AppendIndexedHeader(5); // :path: /index.html |
| EXPECT_TRUE(DecodeBlock(hbb.buffer())); |
| EXPECT_THAT(header_entries_, |
| ElementsAreArray({HpackHeaderEntry{":path", "/index.html"}})); |
| EXPECT_EQ(1250u, header_table_size_limit()); |
| EXPECT_EQ(0u, current_header_table_size()); |
| } |
| // One update required, two allowed, three provided, followed by a header. |
| // The third update is rejected, so the final size is 1000, not 500. |
| decoder_.ApplyHeaderTableSizeSetting(500); |
| decoder_.ApplyHeaderTableSizeSetting(1000); |
| EXPECT_EQ(1000u, decoder_.GetCurrentHeaderTableSizeSetting()); |
| { |
| HpackBlockBuilder hbb; |
| hbb.AppendDynamicTableSizeUpdate(200); |
| hbb.AppendDynamicTableSizeUpdate(700); |
| hbb.AppendDynamicTableSizeUpdate(900); |
| hbb.AppendIndexedHeader(5); // Not decoded. |
| EXPECT_FALSE(DecodeBlock(hbb.buffer())); |
| EXPECT_FALSE(saw_end_); |
| EXPECT_EQ(HpackDecodingError::kDynamicTableSizeUpdateNotAllowed, |
| decoder_.error()); |
| EXPECT_EQ(1u, error_messages_.size()); |
| EXPECT_THAT(error_messages_[0], |
| Eq("Dynamic table size update not allowed")); |
| EXPECT_EQ(700u, header_table_size_limit()); |
| EXPECT_EQ(0u, current_header_table_size()); |
| EXPECT_TRUE(header_entries_.empty()); |
| } |
| EXPECT_EQ(1000u, decoder_.GetCurrentHeaderTableSizeSetting()); |
| // Now that an error has been detected, StartDecodingBlock should return |
| // false. |
| EXPECT_FALSE(decoder_.StartDecodingBlock()); |
| } |
| |
| // Confirm that required size updates are validated. |
| TEST_P(HpackDecoderTest, InvalidRequiredSizeUpdate) { |
| // Require a size update, but provide one that isn't small enough (must be |
| // zero or one, in this case). |
| decoder_.ApplyHeaderTableSizeSetting(1); |
| decoder_.ApplyHeaderTableSizeSetting(1024); |
| HpackBlockBuilder hbb; |
| hbb.AppendDynamicTableSizeUpdate(2); |
| EXPECT_TRUE(decoder_.StartDecodingBlock()); |
| DecodeBuffer db(hbb.buffer()); |
| EXPECT_FALSE(decoder_.DecodeFragment(&db)); |
| EXPECT_FALSE(saw_end_); |
| EXPECT_EQ( |
| HpackDecodingError::kInitialDynamicTableSizeUpdateIsAboveLowWaterMark, |
| decoder_.error()); |
| EXPECT_EQ(1u, error_messages_.size()); |
| EXPECT_THAT(error_messages_[0], |
| Eq("Initial dynamic table size update is above low water mark")); |
| EXPECT_EQ(Http2SettingsInfo::DefaultHeaderTableSize(), |
| header_table_size_limit()); |
| } |
| |
| // Confirm that required size updates are indeed required before the end. |
| TEST_P(HpackDecoderTest, RequiredTableSizeChangeBeforeEnd) { |
| decoder_.ApplyHeaderTableSizeSetting(1024); |
| EXPECT_FALSE(DecodeBlock("")); |
| EXPECT_EQ(HpackDecodingError::kMissingDynamicTableSizeUpdate, |
| decoder_.error()); |
| EXPECT_EQ(1u, error_messages_.size()); |
| EXPECT_THAT(error_messages_[0], Eq("Missing dynamic table size update")); |
| EXPECT_FALSE(saw_end_); |
| } |
| |
| // Confirm that required size updates are indeed required before an |
| // indexed header. |
| TEST_P(HpackDecoderTest, RequiredTableSizeChangeBeforeIndexedHeader) { |
| decoder_.ApplyHeaderTableSizeSetting(1024); |
| HpackBlockBuilder hbb; |
| hbb.AppendIndexedHeader(1); |
| EXPECT_FALSE(DecodeBlock(hbb.buffer())); |
| EXPECT_EQ(HpackDecodingError::kMissingDynamicTableSizeUpdate, |
| decoder_.error()); |
| EXPECT_EQ(1u, error_messages_.size()); |
| EXPECT_THAT(error_messages_[0], Eq("Missing dynamic table size update")); |
| EXPECT_FALSE(saw_end_); |
| EXPECT_TRUE(header_entries_.empty()); |
| } |
| |
| // Confirm that required size updates are indeed required before an indexed |
| // header name. |
| // TODO(jamessynge): Move some of these to hpack_decoder_state_test.cc. |
| TEST_P(HpackDecoderTest, RequiredTableSizeChangeBeforeIndexedHeaderName) { |
| decoder_.ApplyHeaderTableSizeSetting(1024); |
| HpackBlockBuilder hbb; |
| hbb.AppendNameIndexAndLiteralValue(HpackEntryType::kIndexedLiteralHeader, 2, |
| false, "PUT"); |
| EXPECT_FALSE(DecodeBlock(hbb.buffer())); |
| EXPECT_EQ(HpackDecodingError::kMissingDynamicTableSizeUpdate, |
| decoder_.error()); |
| EXPECT_EQ(1u, error_messages_.size()); |
| EXPECT_THAT(error_messages_[0], Eq("Missing dynamic table size update")); |
| EXPECT_FALSE(saw_end_); |
| EXPECT_TRUE(header_entries_.empty()); |
| } |
| |
| // Confirm that required size updates are indeed required before a literal |
| // header name. |
| TEST_P(HpackDecoderTest, RequiredTableSizeChangeBeforeLiteralName) { |
| decoder_.ApplyHeaderTableSizeSetting(1024); |
| HpackBlockBuilder hbb; |
| hbb.AppendLiteralNameAndValue(HpackEntryType::kNeverIndexedLiteralHeader, |
| false, "name", false, "some data."); |
| EXPECT_FALSE(DecodeBlock(hbb.buffer())); |
| EXPECT_EQ(HpackDecodingError::kMissingDynamicTableSizeUpdate, |
| decoder_.error()); |
| EXPECT_EQ(1u, error_messages_.size()); |
| EXPECT_THAT(error_messages_[0], Eq("Missing dynamic table size update")); |
| EXPECT_FALSE(saw_end_); |
| EXPECT_TRUE(header_entries_.empty()); |
| } |
| |
| // Confirm that an excessively long varint is detected, in this case an |
| // index of 127, but with lots of additional high-order 0 bits provided, |
| // too many to be allowed. |
| TEST_P(HpackDecoderTest, InvalidIndexedHeaderVarint) { |
| EXPECT_TRUE(decoder_.StartDecodingBlock()); |
| DecodeBuffer db("\xff\x80\x80\x80\x80\x80\x80\x80\x80\x80\x80\x00"); |
| EXPECT_FALSE(decoder_.DecodeFragment(&db)); |
| EXPECT_TRUE(decoder_.DetectError()); |
| EXPECT_FALSE(saw_end_); |
| EXPECT_EQ(HpackDecodingError::kIndexVarintError, decoder_.error()); |
| EXPECT_EQ(1u, error_messages_.size()); |
| EXPECT_THAT(error_messages_[0], |
| Eq("Index varint beyond implementation limit")); |
| EXPECT_TRUE(header_entries_.empty()); |
| // Now that an error has been detected, EndDecodingBlock should not succeed. |
| EXPECT_FALSE(decoder_.EndDecodingBlock()); |
| } |
| |
| // Confirm that an invalid index into the tables is detected, in this case an |
| // index of 0. |
| TEST_P(HpackDecoderTest, InvalidIndex) { |
| EXPECT_TRUE(decoder_.StartDecodingBlock()); |
| DecodeBuffer db("\x80"); |
| EXPECT_FALSE(decoder_.DecodeFragment(&db)); |
| EXPECT_TRUE(decoder_.DetectError()); |
| EXPECT_FALSE(saw_end_); |
| EXPECT_EQ(HpackDecodingError::kInvalidIndex, decoder_.error()); |
| EXPECT_EQ(1u, error_messages_.size()); |
| EXPECT_THAT(error_messages_[0], |
| Eq("Invalid index in indexed header field representation")); |
| EXPECT_TRUE(header_entries_.empty()); |
| // Now that an error has been detected, EndDecodingBlock should not succeed. |
| EXPECT_FALSE(decoder_.EndDecodingBlock()); |
| } |
| |
| // Confirm that EndDecodingBlock detects a truncated HPACK block. |
| TEST_P(HpackDecoderTest, TruncatedBlock) { |
| HpackBlockBuilder hbb; |
| hbb.AppendDynamicTableSizeUpdate(3000); |
| EXPECT_EQ(3u, hbb.size()); |
| hbb.AppendDynamicTableSizeUpdate(4000); |
| EXPECT_EQ(6u, hbb.size()); |
| // Decodes this block if the whole thing is provided. |
| EXPECT_TRUE(DecodeBlock(hbb.buffer())); |
| EXPECT_EQ(4000u, header_table_size_limit()); |
| // Multiple times even. |
| EXPECT_TRUE(DecodeBlock(hbb.buffer())); |
| EXPECT_EQ(4000u, header_table_size_limit()); |
| // But not if the block is truncated. |
| EXPECT_FALSE(DecodeBlock(hbb.buffer().substr(0, hbb.size() - 1))); |
| EXPECT_FALSE(saw_end_); |
| EXPECT_EQ(HpackDecodingError::kTruncatedBlock, decoder_.error()); |
| EXPECT_EQ(1u, error_messages_.size()); |
| EXPECT_THAT(error_messages_[0], |
| Eq("Block ends in the middle of an instruction")); |
| // The first update was decoded. |
| EXPECT_EQ(3000u, header_table_size_limit()); |
| EXPECT_EQ(0u, current_header_table_size()); |
| EXPECT_TRUE(header_entries_.empty()); |
| } |
| |
| // Confirm that an oversized string is detected, ending decoding. |
| TEST_P(HpackDecoderTest, OversizeStringDetected) { |
| HpackBlockBuilder hbb; |
| hbb.AppendLiteralNameAndValue(HpackEntryType::kNeverIndexedLiteralHeader, |
| false, "name", false, "some data."); |
| hbb.AppendLiteralNameAndValue(HpackEntryType::kUnindexedLiteralHeader, false, |
| "name2", false, "longer data"); |
| |
| // Normally able to decode this block. |
| EXPECT_TRUE(DecodeBlock(hbb.buffer())); |
| EXPECT_THAT(header_entries_, |
| ElementsAreArray({HpackHeaderEntry{"name", "some data."}, |
| HpackHeaderEntry{"name2", "longer data"}})); |
| |
| // But not if the maximum size of strings is less than the longest string. |
| decoder_.set_max_string_size_bytes(10); |
| EXPECT_FALSE(DecodeBlock(hbb.buffer())); |
| EXPECT_THAT(header_entries_, |
| ElementsAreArray({HpackHeaderEntry{"name", "some data."}})); |
| EXPECT_FALSE(saw_end_); |
| EXPECT_EQ(HpackDecodingError::kValueTooLong, decoder_.error()); |
| EXPECT_EQ(1u, error_messages_.size()); |
| EXPECT_THAT(error_messages_[0], Eq("Value length exceeds buffer limit")); |
| } |
| |
| } // namespace |
| } // namespace test |
| } // namespace http2 |
