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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.
#include "include/v8-context.h"
#include "include/v8-function.h"
#include "include/v8-isolate.h"
#include "include/v8-local-handle.h"
#include "include/v8-primitive.h"
#include "include/v8-script.h"
#include "include/v8-template.h"
#include "src/debug/debug.h"
#include "test/unittests/test-utils.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace v8 {
using AccessCheckTest = TestWithIsolate;
namespace {
bool AccessCheck(Local<Context> accessing_context,
Local<Object> accessed_object, Local<Value> data) {
return false;
}
MaybeLocal<Value> CompileRun(Isolate* isolate, const char* source) {
Local<String> source_string =
String::NewFromUtf8(isolate, source).ToLocalChecked();
Local<Context> context = isolate->GetCurrentContext();
Local<Script> script =
Script::Compile(context, source_string).ToLocalChecked();
return script->Run(context);
}
v8::Local<v8::String> v8_str(const char* x) {
return v8::String::NewFromUtf8(v8::Isolate::GetCurrent(), x).ToLocalChecked();
}
} // namespace
TEST_F(AccessCheckTest, GetOwnPropertyDescriptor) {
isolate()->SetFailedAccessCheckCallbackFunction(
[](v8::Local<v8::Object> host, v8::AccessType type,
v8::Local<v8::Value> data) {});
Local<ObjectTemplate> global_template = ObjectTemplate::New(isolate());
global_template->SetAccessCheckCallback(AccessCheck);
Local<FunctionTemplate> getter_template = FunctionTemplate::New(
isolate(), [](const FunctionCallbackInfo<Value>& info) { FAIL(); });
getter_template->SetAcceptAnyReceiver(false);
Local<FunctionTemplate> setter_template = FunctionTemplate::New(
isolate(), [](const FunctionCallbackInfo<v8::Value>& info) { FAIL(); });
setter_template->SetAcceptAnyReceiver(false);
global_template->SetAccessorProperty(v8_str("property"), getter_template,
setter_template);
Local<Context> target_context =
Context::New(isolate(), nullptr, global_template);
Local<Context> accessing_context =
Context::New(isolate(), nullptr, global_template);
accessing_context->Global()
->Set(accessing_context, v8_str("other"), target_context->Global())
.FromJust();
Context::Scope context_scope(accessing_context);
Local<Value> result =
CompileRun(isolate(),
"Object.getOwnPropertyDescriptor(this, 'property')"
" .get.call(other);")
.ToLocalChecked();
EXPECT_TRUE(result->IsUndefined());
CompileRun(isolate(),
"Object.getOwnPropertyDescriptor(this, 'property')"
" .set.call(other, 42);");
}
class AccessRegressionTest : public AccessCheckTest {
protected:
i::Handle<i::JSFunction> RetrieveFunctionFrom(Local<Context> context,
const char* script) {
Context::Scope context_scope(context);
Local<Value> getter = CompileRun(isolate(), script).ToLocalChecked();
EXPECT_TRUE(getter->IsFunction());
i::Handle<i::JSReceiver> r =
Utils::OpenHandle(*Local<Function>::Cast(getter));
EXPECT_TRUE(r->IsJSFunction());
return i::Handle<i::JSFunction>::cast(r);
}
};
TEST_F(AccessRegressionTest,
InstantiatedLazyAccessorPairsHaveCorrectNativeContext) {
// The setup creates two contexts and sets an object created
// in context 1 on the global of context 2.
// The object has an accessor pair {property}. Accessing the
// property descriptor of {property} causes instantiation of the
// accessor pair. The test checks that the access pair has the
// correct native context.
Local<FunctionTemplate> getter_template = FunctionTemplate::New(
isolate(), [](const FunctionCallbackInfo<Value>&) { FAIL(); });
Local<FunctionTemplate> setter_template = FunctionTemplate::New(
isolate(), [](const FunctionCallbackInfo<v8::Value>&) { FAIL(); });
Local<ObjectTemplate> object_template = ObjectTemplate::New(isolate());
object_template->SetAccessorProperty(v8_str("property"), getter_template,
setter_template);
Local<Context> context1 = Context::New(isolate(), nullptr);
Local<Context> context2 = Context::New(isolate(), nullptr);
Local<Object> object =
object_template->NewInstance(context1).ToLocalChecked();
context2->Global()
->Set(context2, v8_str("object_from_context1"), object)
.Check();
i::Handle<i::JSFunction> getter = RetrieveFunctionFrom(
context2,
"Object.getOwnPropertyDescriptor(object_from_context1, 'property').get");
ASSERT_EQ(getter->native_context(), *Utils::OpenHandle(*context1));
}
// Regression test for https://crbug.com/986063.
TEST_F(AccessRegressionTest,
InstantiatedLazyAccessorPairsHaveCorrectNativeContextDebug) {
// The setup creates two contexts and installs an object "object"
// on the global this for each context.
// The object consists of:
// - an accessor pair "property".
// - a normal function "breakfn".
//
// The test sets a break point on {object.breakfn} in the first context.
// This forces instantation of the JSFunction for the {object.property}
// accessor pair. The test verifies afterwards that the respective
// JSFunction of the getter have the correct native context.
Local<FunctionTemplate> getter_template = FunctionTemplate::New(
isolate(), [](const FunctionCallbackInfo<Value>&) { FAIL(); });
Local<FunctionTemplate> setter_template = FunctionTemplate::New(
isolate(), [](const FunctionCallbackInfo<v8::Value>&) { FAIL(); });
Local<FunctionTemplate> break_template = FunctionTemplate::New(
isolate(), [](const FunctionCallbackInfo<v8::Value>&) { FAIL(); });
Local<Context> context1 = Context::New(isolate(), nullptr);
Local<Context> context2 = Context::New(isolate(), nullptr);
Local<ObjectTemplate> object_template = ObjectTemplate::New(isolate());
object_template->Set(isolate(), "breakfn", break_template);
object_template->SetAccessorProperty(v8_str("property"), getter_template,
setter_template);
Local<Object> object1 =
object_template->NewInstance(context1).ToLocalChecked();
EXPECT_TRUE(
context1->Global()->Set(context1, v8_str("object"), object1).IsJust());
Local<Object> object2 =
object_template->NewInstance(context2).ToLocalChecked();
EXPECT_TRUE(
context2->Global()->Set(context2, v8_str("object"), object2).IsJust());
// Force instantiation of the JSFunction for the getter and setter
// of {object.property} by setting a break point on {object.breakfn}
{
Context::Scope context_scope(context1);
i::Isolate* iso = reinterpret_cast<i::Isolate*>(isolate());
i::Handle<i::JSFunction> break_fn =
RetrieveFunctionFrom(context1, "object.breakfn");
int id;
iso->debug()->SetBreakpointForFunction(i::handle(break_fn->shared(), iso),
iso->factory()->empty_string(), &id);
}
i::Handle<i::JSFunction> getter_c1 = RetrieveFunctionFrom(
context1, "Object.getOwnPropertyDescriptor(object, 'property').get");
i::Handle<i::JSFunction> getter_c2 = RetrieveFunctionFrom(
context2, "Object.getOwnPropertyDescriptor(object, 'property').get");
ASSERT_EQ(getter_c1->native_context(), *Utils::OpenHandle(*context1));
ASSERT_EQ(getter_c2->native_context(), *Utils::OpenHandle(*context2));
}
} // namespace v8
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