// Copyright 2017 the V8 project 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 "test/unittests/test-utils.h"
#include "src/objects-inl.h"
#include "src/wasm/module-decoder.h"
#include "src/wasm/streaming-decoder.h"
#include "src/objects/descriptor-array.h"
#include "src/objects/dictionary.h"
#include "test/common/wasm/wasm-macro-gen.h"
namespace v8 {
namespace internal {
namespace wasm {
class MockStreamingProcessor : public StreamingProcessor {
public:
bool ProcessModuleHeader(Vector<const uint8_t> bytes,
uint32_t offset) override {
// TODO(ahaas): Share code with the module-decoder.
Decoder decoder(bytes.begin(), bytes.end());
uint32_t magic_word = decoder.consume_u32("wasm magic");
if (decoder.failed() || magic_word != kWasmMagic) {
ok_ = false;
return false;
}
uint32_t magic_version = decoder.consume_u32("wasm version");
if (decoder.failed() || magic_version != kWasmVersion) {
ok_ = false;
return false;
}
return true;
}
// Process all sections but the code section.
bool ProcessSection(SectionCode section_code, Vector<const uint8_t> bytes,
uint32_t offset) override {
++num_sections_;
return true;
}
bool ProcessCodeSectionHeader(size_t num_functions,
uint32_t offset) override {
return true;
}
// Process a function body.
bool ProcessFunctionBody(Vector<const uint8_t> bytes,
uint32_t offset) override {
++num_functions_;
return true;
}
void OnFinishedChunk() override {}
// Finish the processing of the stream.
void OnFinishedStream(std::unique_ptr<uint8_t[]> bytes,
size_t length) override {
received_bytes_ = std::move(bytes);
length_ = length;
}
// Report an error detected in the StreamingDecoder.
void OnError(DecodeResult result) override { ok_ = false; }
void OnAbort() override {}
size_t num_sections() const { return num_sections_; }
size_t num_functions() const { return num_functions_; }
bool ok() const { return ok_; }
Vector<const uint8_t> received_bytes() {
return Vector<const uint8_t>(received_bytes_.get(), length_);
}
private:
size_t num_sections_ = 0;
size_t num_functions_ = 0;
bool ok_ = true;
std::unique_ptr<uint8_t[]> received_bytes_;
size_t length_;
};
class WasmStreamingDecoderTest : public ::testing::Test {
public:
void ExpectVerifies(Vector<const uint8_t> data, size_t expected_sections,
size_t expected_functions) {
for (int split = 0; split <= data.length(); ++split) {
// Use a unique_ptr so that the StreamingDecoder can own the processor.
std::unique_ptr<MockStreamingProcessor> p(new MockStreamingProcessor());
MockStreamingProcessor* processor = p.get();
StreamingDecoder stream(std::move(p));
stream.OnBytesReceived(data.SubVector(0, split));
stream.OnBytesReceived(data.SubVector(split, data.length()));
stream.Finish();
EXPECT_TRUE(processor->ok());
EXPECT_EQ(expected_sections, processor->num_sections());
EXPECT_EQ(expected_functions, processor->num_functions());
EXPECT_EQ(data, processor->received_bytes());
}
}
void ExpectFailure(Vector<const uint8_t> data) {
for (int split = 0; split <= data.length(); ++split) {
std::unique_ptr<MockStreamingProcessor> p(new MockStreamingProcessor());
MockStreamingProcessor* processor = p.get();
StreamingDecoder stream(std::move(p));
stream.OnBytesReceived(data.SubVector(0, split));
stream.OnBytesReceived(data.SubVector(split, data.length()));
stream.Finish();
EXPECT_FALSE(processor->ok());
}
}
};
TEST_F(WasmStreamingDecoderTest, EmptyStream) {
std::unique_ptr<MockStreamingProcessor> p(new MockStreamingProcessor());
MockStreamingProcessor* processor = p.get();
StreamingDecoder stream(std::move(p));
stream.Finish();
EXPECT_FALSE(processor->ok());
}
TEST_F(WasmStreamingDecoderTest, IncompleteModuleHeader) {
const uint8_t data[] = {U32_LE(kWasmMagic), U32_LE(kWasmVersion)};
{
std::unique_ptr<MockStreamingProcessor> p(new MockStreamingProcessor());
MockStreamingProcessor* processor = p.get();
StreamingDecoder stream(std::move(p));
stream.OnBytesReceived(Vector<const uint8_t>(data, 1));
stream.Finish();
EXPECT_FALSE(processor->ok());
}
for (int length = 1; length < static_cast<int>(arraysize(data)); ++length) {
ExpectFailure(Vector<const uint8_t>(data, length));
}
}
TEST_F(WasmStreamingDecoderTest, MagicAndVersion) {
const uint8_t data[] = {U32_LE(kWasmMagic), U32_LE(kWasmVersion)};
ExpectVerifies(ArrayVector(data), 0, 0);
}
TEST_F(WasmStreamingDecoderTest, BadMagic) {
for (uint32_t x = 1; x; x <<= 1) {
const uint8_t data[] = {U32_LE(kWasmMagic ^ x), U32_LE(kWasmVersion)};
ExpectFailure(ArrayVector(data));
}
}
TEST_F(WasmStreamingDecoderTest, BadVersion) {
for (uint32_t x = 1; x; x <<= 1) {
const uint8_t data[] = {U32_LE(kWasmMagic), U32_LE(kWasmVersion ^ x)};
ExpectFailure(ArrayVector(data));
}
}
TEST_F(WasmStreamingDecoderTest, OneSection) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
0x1, // Section ID
0x6, // Section Length
0x0, // Payload
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0 // 6
};
ExpectVerifies(ArrayVector(data), 1, 0);
}
TEST_F(WasmStreamingDecoderTest, OneSection_b) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
0x1, // Section ID
0x86, // Section Length = 6 (LEB)
0x0, // --
0x0, // Payload
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0 // 6
};
ExpectVerifies(ArrayVector(data), 1, 0);
}
TEST_F(WasmStreamingDecoderTest, OneShortSection) {
// Short section means that section length + payload is less than 5 bytes,
// which is the maximum size of the length field.
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
0x1, // Section ID
0x2, // Section Length
0x0, // Payload
0x0 // 2
};
ExpectVerifies(ArrayVector(data), 1, 0);
}
TEST_F(WasmStreamingDecoderTest, OneShortSection_b) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
0x1, // Section ID
0x82, // Section Length = 2 (LEB)
0x80, // --
0x0, // --
0x0, // Payload
0x0 // 2
};
ExpectVerifies(ArrayVector(data), 1, 0);
}
TEST_F(WasmStreamingDecoderTest, OneEmptySection) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
0x1, // Section ID
0x0 // Section Length
};
ExpectVerifies(ArrayVector(data), 1, 0);
}
TEST_F(WasmStreamingDecoderTest, OneSectionNotEnoughPayload1) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
0x1, // Section ID
0x6, // Section Length
0x0, // Payload
0x0, // 2
0x0, // 3
0x0, // 4
0x0 // 5
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, OneSectionNotEnoughPayload2) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
0x1, // Section ID
0x6, // Section Length
0x0 // Payload
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, OneSectionInvalidLength) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
0x1, // Section ID
0x80, // Section Length (0 in LEB)
0x80, // --
0x80, // --
0x80, // --
0x80, // --
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, TwoLongSections) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
0x1, // Section ID
0x6, // Section Length
0x0, // Payload
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
0x2, // Section ID
0x7, // Section Length
0x0, // Payload
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
0x0 // 7
};
ExpectVerifies(ArrayVector(data), 2, 0);
}
TEST_F(WasmStreamingDecoderTest, TwoShortSections) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
0x1, // Section ID
0x1, // Section Length
0x0, // Payload
0x2, // Section ID
0x2, // Section Length
0x0, // Payload
0x0, // 2
};
ExpectVerifies(ArrayVector(data), 2, 0);
}
TEST_F(WasmStreamingDecoderTest, TwoSectionsShortLong) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
0x1, // Section ID
0x1, // Section Length
0x0, // Payload
0x2, // Section ID
0x7, // Section Length
0x0, // Payload
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
0x0 // 7
};
ExpectVerifies(ArrayVector(data), 2, 0);
}
TEST_F(WasmStreamingDecoderTest, TwoEmptySections) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
0x1, // Section ID
0x0, // Section Length
0x2, // Section ID
0x0 // Section Length
};
ExpectVerifies(ArrayVector(data), 2, 0);
}
TEST_F(WasmStreamingDecoderTest, OneFunction) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0x8, // Section Length
0x1, // Number of Functions
0x6, // Function Length
0x0, // Function
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
};
ExpectVerifies(ArrayVector(data), 0, 1);
}
TEST_F(WasmStreamingDecoderTest, OneShortFunction) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0x3, // Section Length
0x1, // Number of Functions
0x1, // Function Length
0x0, // Function
};
ExpectVerifies(ArrayVector(data), 0, 1);
}
TEST_F(WasmStreamingDecoderTest, EmptyFunction) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0x2, // Section Length
0x1, // Number of Functions
0x0, // Function Length
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, TwoFunctions) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0x10, // Section Length
0x2, // Number of Functions
0x6, // Function Length
0x0, // Function
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
0x7, // Function Length
0x0, // Function
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
0x0, // 7
};
ExpectVerifies(ArrayVector(data), 0, 2);
}
TEST_F(WasmStreamingDecoderTest, TwoFunctions_b) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0xB, // Section Length
0x2, // Number of Functions
0x1, // Function Length
0x0, // Function
0x7, // Function Length
0x0, // Function
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
0x0, // 7
};
ExpectVerifies(ArrayVector(data), 0, 2);
}
TEST_F(WasmStreamingDecoderTest, CodeSectionLengthZero) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0x0, // Section Length
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, CodeSectionLengthTooHigh) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0xD, // Section Length
0x2, // Number of Functions
0x7, // Function Length
0x0, // Function
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
0x0, // 7
0x1, // Function Length
0x0, // Function
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, CodeSectionLengthTooHighZeroFunctions) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0xD, // Section Length
0x0, // Number of Functions
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, CodeSectionLengthTooLow) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0x9, // Section Length
0x2, // Number of Functions
0x7, // Function Length
0x0, // Function
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
0x0, // 7
0x1, // Function Length
0x0, // Function
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, CodeSectionLengthTooLowEndsInNumFunctions) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0x1, // Section Length
0x82, // Number of Functions
0x80, // --
0x00, // --
0x7, // Function Length
0x0, // Function
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
0x0, // 7
0x1, // Function Length
0x0, // Function
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, CodeSectionLengthTooLowEndsInFunctionLength) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0x5, // Section Length
0x82, // Number of Functions
0x80, // --
0x00, // --
0x87, // Function Length
0x80, // --
0x00, // --
0x0, // Function
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
0x0, // 7
0x1, // Function Length
0x0, // Function
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, NumberOfFunctionsTooHigh) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0xB, // Section Length
0x4, // Number of Functions
0x7, // Function Length
0x0, // Function
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
0x0, // 7
0x1, // Function Length
0x0, // Function
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, NumberOfFunctionsTooLow) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0xE, // Section Length
0x2, // Number of Functions
0x1, // Function Length
0x0, // Function
0x2, // Function Length
0x0, // Function
0x0, // 2
0x7, // Function Length
0x0, // Function
0x0, // 2
0x0, // 3
0x0, // 4
0x0, // 5
0x0, // 6
0x0, // 7
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, TwoCodeSections) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0x3, // Section Length
0x1, // Number of Functions
0x1, // Function Length
0x0, // Function
kCodeSectionCode, // Section ID
0x3, // Section Length
0x1, // Number of Functions
0x1, // Function Length
0x0, // Function
};
ExpectFailure(ArrayVector(data));
}
TEST_F(WasmStreamingDecoderTest, UnknownSection) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0x3, // Section Length
0x1, // Number of Functions
0x1, // Function Length
0x0, // Function
kUnknownSectionCode, // Section ID
0x3, // Section Length
0x1, // Name Length
0x1, // Name
0x0, // Content
};
ExpectVerifies(ArrayVector(data), 1, 1);
}
TEST_F(WasmStreamingDecoderTest, UnknownSectionSandwich) {
const uint8_t data[] = {
U32_LE(kWasmMagic), // --
U32_LE(kWasmVersion), // --
kCodeSectionCode, // Section ID
0x3, // Section Length
0x1, // Number of Functions
0x1, // Function Length
0x0, // Function
kUnknownSectionCode, // Section ID
0x3, // Section Length
0x1, // Name Length
0x1, // Name
0x0, // Content
kCodeSectionCode, // Section ID
0x3, // Section Length
0x1, // Number of Functions
0x1, // Function Length
0x0, // Function
};
ExpectFailure(ArrayVector(data));
}
} // namespace wasm
} // namespace internal
} // namespace v8