root/Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp

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DEFINITIONS

This source file includes following definitions.
  1. scriptValueAsNode
  2. nodeAsScriptValue
  3. inspectedObjectMethodCustom
  4. internalConstructorNameMethodCustom
  5. isHTMLAllCollectionMethodCustom
  6. typeMethodCustom
  7. setFunctionName
  8. functionDetailsMethodCustom
  9. getInternalPropertiesMethodCustom
  10. getJSListenerFunctions
  11. getEventListenersMethodCustom
  12. inspectMethodCustom
  13. evaluateMethodCustom
  14. setFunctionVariableValueMethodCustom
  15. getFunctionLocation
  16. debugFunctionMethodCustom
  17. undebugFunctionMethodCustom
  18. monitorFunctionMethodCustom
  19. unmonitorFunctionMethodCustom
  20. suppressWarningsAndCallMethodCustom

/*
 * Copyright (C) 2007-2011 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "V8InjectedScriptHost.h"

#include "V8Database.h"
#include "V8EventTarget.h"
#include "V8HTMLAllCollection.h"
#include "V8HTMLCollection.h"
#include "V8Node.h"
#include "V8NodeList.h"
#include "V8Storage.h"
#include "bindings/v8/BindingSecurity.h"
#include "bindings/v8/ExceptionState.h"
#include "bindings/v8/ScriptDebugServer.h"
#include "bindings/v8/ScriptValue.h"
#include "bindings/v8/V8AbstractEventListener.h"
#include "bindings/v8/V8Binding.h"
#include "bindings/v8/V8ScriptRunner.h"
#include "bindings/v8/custom/V8Float32ArrayCustom.h"
#include "bindings/v8/custom/V8Float64ArrayCustom.h"
#include "bindings/v8/custom/V8Int16ArrayCustom.h"
#include "bindings/v8/custom/V8Int32ArrayCustom.h"
#include "bindings/v8/custom/V8Int8ArrayCustom.h"
#include "bindings/v8/custom/V8Uint16ArrayCustom.h"
#include "bindings/v8/custom/V8Uint32ArrayCustom.h"
#include "bindings/v8/custom/V8Uint8ArrayCustom.h"
#include "bindings/v8/custom/V8Uint8ClampedArrayCustom.h"
#include "core/events/EventTarget.h"
#include "core/frame/DOMWindow.h"
#include "core/inspector/InjectedScript.h"
#include "core/inspector/InjectedScriptHost.h"
#include "core/inspector/InspectorDOMAgent.h"
#include "modules/webdatabase/Database.h"
#include "platform/JSONValues.h"

namespace WebCore {

Node* InjectedScriptHost::scriptValueAsNode(ScriptValue value)
{
    v8::HandleScope scope(value.isolate());
    if (!value.isObject() || value.isNull())
        return 0;
    return V8Node::toNative(v8::Handle<v8::Object>::Cast(value.v8Value()));
}

ScriptValue InjectedScriptHost::nodeAsScriptValue(ScriptState* state, Node* node)
{
    v8::Isolate* isolate = state->isolate();
    v8::HandleScope scope(isolate);
    v8::Local<v8::Context> context = state->context();
    v8::Context::Scope contextScope(context);

    ExceptionState exceptionState(ExceptionState::ExecutionContext, "nodeAsScriptValue", "InjectedScriptHost", v8::Handle<v8::Object>(), isolate);
    if (!BindingSecurity::shouldAllowAccessToNode(isolate, node, exceptionState))
        return ScriptValue(v8::Null(isolate), isolate);
    return ScriptValue(toV8(node, v8::Handle<v8::Object>(), isolate), isolate);
}

void V8InjectedScriptHost::inspectedObjectMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    if (info.Length() < 1)
        return;

    if (!info[0]->IsInt32()) {
        throwTypeError("argument has to be an integer", info.GetIsolate());
        return;
    }

    InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
    InjectedScriptHost::InspectableObject* object = host->inspectedObject(info[0]->ToInt32()->Value());
    v8SetReturnValue(info, object->get(ScriptState::current()).v8Value());
}

void V8InjectedScriptHost::internalConstructorNameMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    if (info.Length() < 1)
        return;

    if (!info[0]->IsObject())
        return;

    v8SetReturnValue(info, info[0]->ToObject()->GetConstructorName());
}

void V8InjectedScriptHost::isHTMLAllCollectionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    if (info.Length() < 1)
        return;

    if (!info[0]->IsObject()) {
        v8SetReturnValue(info, false);
        return;
    }

    v8SetReturnValue(info, V8HTMLAllCollection::hasInstance(info[0], info.GetIsolate()));
}

void V8InjectedScriptHost::typeMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    if (info.Length() < 1)
        return;
    v8::Isolate* isolate = info.GetIsolate();

    v8::Handle<v8::Value> value = info[0];
    if (value->IsString()) {
        v8SetReturnValue(info, v8AtomicString(isolate, "string"));
        return;
    }
    if (value->IsArray()) {
        v8SetReturnValue(info, v8AtomicString(isolate, "array"));
        return;
    }
    if (value->IsBoolean()) {
        v8SetReturnValue(info, v8AtomicString(isolate, "boolean"));
        return;
    }
    if (value->IsNumber()) {
        v8SetReturnValue(info, v8AtomicString(isolate, "number"));
        return;
    }
    if (value->IsDate()) {
        v8SetReturnValue(info, v8AtomicString(isolate, "date"));
        return;
    }
    if (value->IsRegExp()) {
        v8SetReturnValue(info, v8AtomicString(isolate, "regexp"));
        return;
    }
    if (V8Node::hasInstance(value, isolate)) {
        v8SetReturnValue(info, v8AtomicString(isolate, "node"));
        return;
    }
    if (V8NodeList::hasInstance(value, isolate)) {
        v8SetReturnValue(info, v8AtomicString(isolate, "array"));
        return;
    }
    if (V8HTMLCollection::hasInstance(value, isolate)) {
        v8SetReturnValue(info, v8AtomicString(isolate, "array"));
        return;
    }
    if (V8Int8Array::hasInstance(value, isolate) || V8Int16Array::hasInstance(value, isolate) || V8Int32Array::hasInstance(value, isolate)) {
        v8SetReturnValue(info, v8AtomicString(isolate, "array"));
        return;
    }
    if (V8Uint8Array::hasInstance(value, isolate) || V8Uint16Array::hasInstance(value, isolate) || V8Uint32Array::hasInstance(value, isolate)) {
        v8SetReturnValue(info, v8AtomicString(isolate, "array"));
        return;
    }
    if (V8Float32Array::hasInstance(value, isolate) || V8Float64Array::hasInstance(value, isolate)) {
        v8SetReturnValue(info, v8AtomicString(isolate, "array"));
        return;
    }
    if (V8Uint8ClampedArray::hasInstance(value, isolate)) {
        v8SetReturnValue(info, v8AtomicString(isolate, "array"));
        return;
    }
}

static bool setFunctionName(v8::Handle<v8::Object>& result, const v8::Handle<v8::Value>& value, v8::Isolate* isolate)
{
    if (value->IsString() && v8::Handle<v8::String>::Cast(value)->Length()) {
        result->Set(v8AtomicString(isolate, "functionName"), value);
        return true;
    }
    return false;
}

void V8InjectedScriptHost::functionDetailsMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    if (info.Length() < 1)
        return;

    v8::Isolate* isolate = info.GetIsolate();

    v8::Handle<v8::Value> value = info[0];
    if (!value->IsFunction())
        return;
    v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(value);
    int lineNumber = function->GetScriptLineNumber();
    int columnNumber = function->GetScriptColumnNumber();

    v8::Local<v8::Object> location = v8::Object::New(isolate);
    location->Set(v8AtomicString(isolate, "lineNumber"), v8::Integer::New(isolate, lineNumber));
    location->Set(v8AtomicString(isolate, "columnNumber"), v8::Integer::New(isolate, columnNumber));
    location->Set(v8AtomicString(isolate, "scriptId"), v8::Integer::New(isolate, function->ScriptId())->ToString());

    v8::Local<v8::Object> result = v8::Object::New(isolate);
    result->Set(v8AtomicString(isolate, "location"), location);

    if (!setFunctionName(result, function->GetDisplayName(), isolate)
        && !setFunctionName(result, function->GetName(), isolate)
        && !setFunctionName(result, function->GetInferredName(), isolate))
        result->Set(v8AtomicString(isolate, "functionName"), v8AtomicString(isolate, ""));

    InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
    ScriptDebugServer& debugServer = host->scriptDebugServer();
    v8::Handle<v8::Value> scopes = debugServer.functionScopes(function);
    if (!scopes.IsEmpty() && scopes->IsArray())
        result->Set(v8AtomicString(isolate, "rawScopes"), scopes);

    v8SetReturnValue(info, result);
}

void V8InjectedScriptHost::getInternalPropertiesMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    if (info.Length() < 1)
        return;

    v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(info[0]);

    InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
    ScriptDebugServer& debugServer = host->scriptDebugServer();
    v8SetReturnValue(info, debugServer.getInternalProperties(object));
}

static v8::Handle<v8::Array> getJSListenerFunctions(ExecutionContext* executionContext, const EventListenerInfo& listenerInfo, v8::Isolate* isolate)
{
    v8::Local<v8::Array> result = v8::Array::New(isolate);
    size_t handlersCount = listenerInfo.eventListenerVector.size();
    for (size_t i = 0, outputIndex = 0; i < handlersCount; ++i) {
        RefPtr<EventListener> listener = listenerInfo.eventListenerVector[i].listener;
        if (listener->type() != EventListener::JSEventListenerType) {
            ASSERT_NOT_REACHED();
            continue;
        }
        V8AbstractEventListener* v8Listener = static_cast<V8AbstractEventListener*>(listener.get());
        v8::Local<v8::Context> context = toV8Context(executionContext, v8Listener->world());
        // Hide listeners from other contexts.
        if (context != isolate->GetCurrentContext())
            continue;
        v8::Local<v8::Object> function;
        {
            // getListenerObject() may cause JS in the event attribute to get compiled, potentially unsuccessfully.
            v8::TryCatch block;
            function = v8Listener->getListenerObject(executionContext);
            if (block.HasCaught())
                continue;
        }
        ASSERT(!function.IsEmpty());
        v8::Local<v8::Object> listenerEntry = v8::Object::New(isolate);
        listenerEntry->Set(v8AtomicString(isolate, "listener"), function);
        listenerEntry->Set(v8AtomicString(isolate, "useCapture"), v8::Boolean::New(isolate, listenerInfo.eventListenerVector[i].useCapture));
        result->Set(v8::Number::New(isolate, outputIndex++), listenerEntry);
    }
    return result;
}

void V8InjectedScriptHost::getEventListenersMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    if (info.Length() < 1)
        return;


    v8::Local<v8::Value> value = info[0];
    EventTarget* target = V8EventTarget::toNativeWithTypeCheck(info.GetIsolate(), value);

    // We need to handle a DOMWindow specially, because a DOMWindow wrapper exists on a prototype chain.
    if (!target)
        target = toDOMWindow(value, info.GetIsolate());

    if (!target || !target->executionContext())
        return;

    InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
    Vector<EventListenerInfo> listenersArray;
    host->getEventListenersImpl(target, listenersArray);

    v8::Local<v8::Object> result = v8::Object::New(info.GetIsolate());
    for (size_t i = 0; i < listenersArray.size(); ++i) {
        v8::Handle<v8::Array> listeners = getJSListenerFunctions(target->executionContext(), listenersArray[i], info.GetIsolate());
        if (!listeners->Length())
            continue;
        AtomicString eventType = listenersArray[i].eventType;
        result->Set(v8String(info.GetIsolate(), eventType), listeners);
    }

    v8SetReturnValue(info, result);
}

void V8InjectedScriptHost::inspectMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    if (info.Length() < 2)
        return;

    InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
    ScriptValue object(info[0], info.GetIsolate());
    ScriptValue hints(info[1], info.GetIsolate());
    host->inspectImpl(object.toJSONValue(ScriptState::current()), hints.toJSONValue(ScriptState::current()));
}

void V8InjectedScriptHost::evaluateMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    v8::Isolate* isolate = info.GetIsolate();
    if (info.Length() < 1) {
        isolate->ThrowException(v8::Exception::Error(v8::String::NewFromUtf8(isolate, "One argument expected.")));
        return;
    }

    v8::Handle<v8::String> expression = info[0]->ToString();
    if (expression.IsEmpty()) {
        isolate->ThrowException(v8::Exception::Error(v8::String::NewFromUtf8(isolate, "The argument must be a string.")));
        return;
    }

    ASSERT(!isolate->GetCurrentContext().IsEmpty());
    v8::TryCatch tryCatch;
    v8::Handle<v8::Value> result = V8ScriptRunner::compileAndRunInternalScript(expression, info.GetIsolate());
    if (tryCatch.HasCaught()) {
        v8SetReturnValue(info, tryCatch.ReThrow());
        return;
    }
    v8SetReturnValue(info, result);
}

void V8InjectedScriptHost::setFunctionVariableValueMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    v8::Handle<v8::Value> functionValue = info[0];
    int scopeIndex = info[1]->Int32Value();
    String variableName = toCoreStringWithUndefinedOrNullCheck(info[2]);
    v8::Handle<v8::Value> newValue = info[3];

    InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
    ScriptDebugServer& debugServer = host->scriptDebugServer();
    v8SetReturnValue(info, debugServer.setFunctionVariableValue(functionValue, scopeIndex, variableName, newValue));
}

static bool getFunctionLocation(const v8::FunctionCallbackInfo<v8::Value>& info, String* scriptId, int* lineNumber, int* columnNumber)
{
    if (info.Length() < 1)
        return false;
    v8::Handle<v8::Value> fn = info[0];
    if (!fn->IsFunction())
        return false;
    v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(fn);
    *lineNumber = function->GetScriptLineNumber();
    *columnNumber = function->GetScriptColumnNumber();
    if (*lineNumber == v8::Function::kLineOffsetNotFound || *columnNumber == v8::Function::kLineOffsetNotFound)
        return false;
    *scriptId = String::number(function->ScriptId());
    return true;
}

void V8InjectedScriptHost::debugFunctionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    String scriptId;
    int lineNumber;
    int columnNumber;
    if (!getFunctionLocation(info, &scriptId, &lineNumber, &columnNumber))
        return;

    InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
    host->debugFunction(scriptId, lineNumber, columnNumber);
}

void V8InjectedScriptHost::undebugFunctionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    String scriptId;
    int lineNumber;
    int columnNumber;
    if (!getFunctionLocation(info, &scriptId, &lineNumber, &columnNumber))
        return;

    InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
    host->undebugFunction(scriptId, lineNumber, columnNumber);
}

void V8InjectedScriptHost::monitorFunctionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    String scriptId;
    int lineNumber;
    int columnNumber;
    if (!getFunctionLocation(info, &scriptId, &lineNumber, &columnNumber))
        return;

    v8::Handle<v8::Value> name;
    if (info.Length() > 0 && info[0]->IsFunction()) {
        v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(info[0]);
        name = function->GetName();
        if (!name->IsString() || !v8::Handle<v8::String>::Cast(name)->Length())
            name = function->GetInferredName();
    }

    InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
    host->monitorFunction(scriptId, lineNumber, columnNumber, toCoreStringWithUndefinedOrNullCheck(name));
}

void V8InjectedScriptHost::unmonitorFunctionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    String scriptId;
    int lineNumber;
    int columnNumber;
    if (!getFunctionLocation(info, &scriptId, &lineNumber, &columnNumber))
        return;

    InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
    host->unmonitorFunction(scriptId, lineNumber, columnNumber);
}

void V8InjectedScriptHost::suppressWarningsAndCallMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
{
    if (info.Length() < 2 || !info[0]->IsObject() || !info[1]->IsFunction())
        return;

    InjectedScriptHost* host = V8InjectedScriptHost::toNative(info.Holder());
    ScriptDebugServer& debugServer = host->scriptDebugServer();
    debugServer.muteWarningsAndDeprecations();

    v8::Handle<v8::Object> receiver = v8::Handle<v8::Object>::Cast(info[0]);
    v8::Handle<v8::Function> function = v8::Handle<v8::Function>::Cast(info[1]);
    size_t argc = info.Length() - 2;
    OwnPtr<v8::Handle<v8::Value>[]> argv = adoptArrayPtr(new v8::Handle<v8::Value>[argc]);
    for (size_t i = 0; i < argc; ++i)
        argv[i] = info[i + 2];

    v8::Local<v8::Value> result = function->Call(receiver, argc, argv.get());
    debugServer.unmuteWarningsAndDeprecations();
    v8SetReturnValue(info, result);
}

} // namespace WebCore

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