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// 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.
// Tests effects of (CSP) "unsafe-eval" and "wasm-eval" callback functions.
//
// Note: These tests are in a separate test file because the tests dynamically
// change the isolate in terms of callbacks allow_code_gen_callback and
// allow_wasm_code_gen_callback.
#include "src/wasm/wasm-module-builder.h"
#include "src/wasm/wasm-objects-inl.h"
#include "src/wasm/wasm-objects.h"
#include "test/cctest/cctest.h"
#include "test/common/wasm/wasm-module-runner.h"
namespace v8 {
namespace internal {
namespace wasm {
namespace {
// Possible values for callback pointers.
enum TestValue {
kTestUsingNull, // no callback.
kTestUsingFalse, // callback returning false.
kTestUsingTrue, // callbacl returning true.
};
constexpr int kNumTestValues = 3;
const char* TestValueName[kNumTestValues] = {"null", "false", "true"};
// Defined to simplify iterating over TestValues;
const TestValue AllTestValues[kNumTestValues] = {
kTestUsingNull, kTestUsingFalse, kTestUsingTrue};
// This matrix holds the results of setting allow_code_gen_callback
// (first index) and allow_wasm_code_gen_callback (second index) using
// TestValue's. The value in the matrix is true if compilation is
// allowed, and false otherwise.
const bool ExpectedResults[kNumTestValues][kNumTestValues] = {
{true, false, true}, {false, false, true}, {true, false, true}};
bool TrueCallback(Local<v8::Context>, Local<v8::String>) { return true; }
bool FalseCallback(Local<v8::Context>, Local<v8::String>) { return false; }
using CallbackFn = bool (*)(Local<v8::Context>, Local<v8::String>);
// Defines the Callback to use for the corresponding TestValue.
CallbackFn Callback[kNumTestValues] = {nullptr, FalseCallback, TrueCallback};
void BuildTrivialModule(Zone* zone, ZoneBuffer* buffer) {
WasmModuleBuilder* builder = new (zone) WasmModuleBuilder(zone);
builder->WriteTo(buffer);
}
bool TestModule(Isolate* isolate, v8::MemorySpan<const uint8_t> wire_bytes) {
HandleScope scope(isolate);
v8::MemorySpan<const uint8_t> serialized_module;
MaybeLocal<v8::WasmModuleObject> module =
v8::WasmModuleObject::DeserializeOrCompile(
reinterpret_cast<v8::Isolate*>(isolate), serialized_module,
wire_bytes);
return !module.IsEmpty();
}
} // namespace
TEST(PropertiesOfCodegenCallbacks) {
v8::internal::AccountingAllocator allocator;
Zone zone(&allocator, ZONE_NAME);
ZoneBuffer buffer(&zone);
BuildTrivialModule(&zone, &buffer);
v8::MemorySpan<const uint8_t> wire_bytes = {buffer.begin(), buffer.size()};
Isolate* isolate = CcTest::InitIsolateOnce();
HandleScope scope(isolate);
testing::SetupIsolateForWasmModule(isolate);
for (TestValue codegen : AllTestValues) {
for (TestValue wasm_codegen : AllTestValues) {
fprintf(stderr, "Test codegen = %s, wasm_codegen = %s\n",
TestValueName[codegen], TestValueName[wasm_codegen]);
isolate->set_allow_code_gen_callback(Callback[codegen]);
isolate->set_allow_wasm_code_gen_callback(Callback[wasm_codegen]);
bool found = TestModule(isolate, wire_bytes);
bool expected = ExpectedResults[codegen][wasm_codegen];
CHECK_EQ(expected, found);
CcTest::CollectAllAvailableGarbage();
}
}
}
} // namespace wasm
} // namespace internal
} // namespace v8
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