| /* |
| * Copyright (C) 2009 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: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "bindings/v8/V8Initializer.h" |
| |
| #include "V8DOMException.h" |
| #include "V8ErrorEvent.h" |
| #include "V8History.h" |
| #include "V8Location.h" |
| #include "V8Window.h" |
| #include "bindings/v8/DOMWrapperWorld.h" |
| #include "bindings/v8/ScriptCallStackFactory.h" |
| #include "bindings/v8/ScriptController.h" |
| #include "bindings/v8/ScriptProfiler.h" |
| #include "bindings/v8/V8Binding.h" |
| #include "bindings/v8/V8ErrorHandler.h" |
| #include "bindings/v8/V8GCController.h" |
| #include "bindings/v8/V8HiddenPropertyName.h" |
| #include "bindings/v8/V8PerContextData.h" |
| #include "core/dom/Document.h" |
| #include "core/dom/ExceptionCode.h" |
| #include "core/inspector/ScriptCallStack.h" |
| #include "core/frame/ConsoleTypes.h" |
| #include "core/frame/ContentSecurityPolicy.h" |
| #include "core/frame/DOMWindow.h" |
| #include "core/frame/Frame.h" |
| #include "public/platform/Platform.h" |
| #include "wtf/RefPtr.h" |
| #include "wtf/text/WTFString.h" |
| #include <v8-debug.h> |
| |
| namespace WebCore { |
| |
| static Frame* findFrame(v8::Local<v8::Object> host, v8::Local<v8::Value> data, v8::Isolate* isolate) |
| { |
| const WrapperTypeInfo* type = WrapperTypeInfo::unwrap(data); |
| |
| if (V8Window::wrapperTypeInfo.equals(type)) { |
| v8::Handle<v8::Object> windowWrapper = host->FindInstanceInPrototypeChain(V8Window::GetTemplate(isolate, worldTypeInMainThread(isolate))); |
| if (windowWrapper.IsEmpty()) |
| return 0; |
| return V8Window::toNative(windowWrapper)->frame(); |
| } |
| |
| if (V8History::wrapperTypeInfo.equals(type)) |
| return V8History::toNative(host)->frame(); |
| |
| if (V8Location::wrapperTypeInfo.equals(type)) |
| return V8Location::toNative(host)->frame(); |
| |
| // This function can handle only those types listed above. |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| static void reportFatalErrorInMainThread(const char* location, const char* message) |
| { |
| int memoryUsageMB = WebKit::Platform::current()->actualMemoryUsageMB(); |
| printf("V8 error: %s (%s). Current memory usage: %d MB\n", message, location, memoryUsageMB); |
| CRASH(); |
| } |
| |
| static void messageHandlerInMainThread(v8::Handle<v8::Message> message, v8::Handle<v8::Value> data) |
| { |
| // If called during context initialization, there will be no entered context. |
| v8::Handle<v8::Context> enteredContext = v8::Context::GetEntered(); |
| if (enteredContext.IsEmpty()) |
| return; |
| |
| DOMWindow* firstWindow = toDOMWindow(enteredContext); |
| if (!firstWindow->isCurrentlyDisplayedInFrame()) |
| return; |
| |
| String errorMessage = toWebCoreString(message->Get()); |
| |
| v8::Handle<v8::StackTrace> stackTrace = message->GetStackTrace(); |
| RefPtr<ScriptCallStack> callStack; |
| // Currently stack trace is only collected when inspector is open. |
| if (!stackTrace.IsEmpty() && stackTrace->GetFrameCount() > 0) |
| callStack = createScriptCallStack(stackTrace, ScriptCallStack::maxCallStackSizeToCapture, v8::Isolate::GetCurrent()); |
| |
| v8::Handle<v8::Value> resourceName = message->GetScriptResourceName(); |
| bool shouldUseDocumentURL = resourceName.IsEmpty() || !resourceName->IsString(); |
| String resource = shouldUseDocumentURL ? firstWindow->document()->url() : toWebCoreString(resourceName.As<v8::String>()); |
| AccessControlStatus corsStatus = message->IsSharedCrossOrigin() ? SharableCrossOrigin : NotSharableCrossOrigin; |
| |
| RefPtr<ErrorEvent> event = ErrorEvent::create(errorMessage, resource, message->GetLineNumber(), message->GetStartColumn() + 1, DOMWrapperWorld::current()); |
| if (V8DOMWrapper::isDOMWrapper(data)) { |
| v8::Handle<v8::Object> obj = v8::Handle<v8::Object>::Cast(data); |
| const WrapperTypeInfo* type = toWrapperTypeInfo(obj); |
| if (V8DOMException::wrapperTypeInfo.isSubclass(type)) { |
| DOMException* exception = V8DOMException::toNative(obj); |
| if (exception && !exception->messageForConsole().isEmpty()) |
| event->setUnsanitizedMessage("Uncaught " + exception->toStringForConsole()); |
| } |
| } |
| |
| // This method might be called while we're creating a new context. In this case, we |
| // avoid storing the exception object, as we can't create a wrapper during context creation. |
| // FIXME: Can we even get here during initialization now that we bail out when GetEntered returns an empty handle? |
| DOMWrapperWorld* world = DOMWrapperWorld::current(); |
| Frame* frame = firstWindow->document()->frame(); |
| if (world && frame && frame->script().existingWindowShell(world)) |
| V8ErrorHandler::storeExceptionOnErrorEventWrapper(event.get(), data, v8::Isolate::GetCurrent()); |
| firstWindow->document()->reportException(event.release(), callStack, corsStatus); |
| } |
| |
| static void failedAccessCheckCallbackInMainThread(v8::Local<v8::Object> host, v8::AccessType type, v8::Local<v8::Value> data) |
| { |
| Frame* target = findFrame(host, data, v8::Isolate::GetCurrent()); |
| if (!target) |
| return; |
| DOMWindow* targetWindow = target->domWindow(); |
| |
| ExceptionState es(v8::Isolate::GetCurrent()); |
| es.throwSecurityError(targetWindow->sanitizedCrossDomainAccessErrorMessage(activeDOMWindow()), targetWindow->crossDomainAccessErrorMessage(activeDOMWindow())); |
| es.throwIfNeeded(); |
| } |
| |
| static bool codeGenerationCheckCallbackInMainThread(v8::Local<v8::Context> context) |
| { |
| if (ExecutionContext* executionContext = toExecutionContext(context)) { |
| if (ContentSecurityPolicy* policy = toDocument(executionContext)->contentSecurityPolicy()) |
| return policy->allowEval(ScriptState::forContext(context)); |
| } |
| return false; |
| } |
| |
| static void initializeV8Common() |
| { |
| v8::V8::AddGCPrologueCallback(V8GCController::gcPrologue); |
| v8::V8::AddGCEpilogueCallback(V8GCController::gcEpilogue); |
| v8::V8::IgnoreOutOfMemoryException(); |
| |
| v8::Debug::SetLiveEditEnabled(false); |
| } |
| |
| void V8Initializer::initializeMainThreadIfNeeded(v8::Isolate* isolate) |
| { |
| ASSERT(isMainThread()); |
| |
| static bool initialized = false; |
| if (initialized) |
| return; |
| initialized = true; |
| |
| initializeV8Common(); |
| |
| v8::V8::SetFatalErrorHandler(reportFatalErrorInMainThread); |
| v8::V8::AddMessageListener(messageHandlerInMainThread); |
| v8::V8::SetFailedAccessCheckCallbackFunction(failedAccessCheckCallbackInMainThread); |
| v8::V8::SetAllowCodeGenerationFromStringsCallback(codeGenerationCheckCallbackInMainThread); |
| ScriptProfiler::initialize(); |
| V8PerIsolateData::ensureInitialized(isolate); |
| } |
| |
| static void reportFatalErrorInWorker(const char* location, const char* message) |
| { |
| // FIXME: We temporarily deal with V8 internal error situations such as out-of-memory by crashing the worker. |
| CRASH(); |
| } |
| |
| static void messageHandlerInWorker(v8::Handle<v8::Message> message, v8::Handle<v8::Value> data) |
| { |
| static bool isReportingException = false; |
| // Exceptions that occur in error handler should be ignored since in that case |
| // WorkerGlobalScope::reportException will send the exception to the worker object. |
| if (isReportingException) |
| return; |
| isReportingException = true; |
| |
| // During the frame teardown, there may not be a valid context. |
| if (ExecutionContext* context = getExecutionContext()) { |
| String errorMessage = toWebCoreString(message->Get()); |
| String sourceURL = toWebCoreString(message->GetScriptResourceName()); |
| RefPtr<ErrorEvent> event = ErrorEvent::create(errorMessage, sourceURL, message->GetLineNumber(), message->GetStartColumn() + 1, DOMWrapperWorld::current()); |
| AccessControlStatus corsStatus = message->IsSharedCrossOrigin() ? SharableCrossOrigin : NotSharableCrossOrigin; |
| |
| V8ErrorHandler::storeExceptionOnErrorEventWrapper(event.get(), data, v8::Isolate::GetCurrent()); |
| context->reportException(event.release(), 0, corsStatus); |
| } |
| |
| isReportingException = false; |
| } |
| |
| static const int kWorkerMaxStackSize = 500 * 1024; |
| |
| void V8Initializer::initializeWorker(v8::Isolate* isolate) |
| { |
| initializeV8Common(); |
| |
| v8::V8::AddMessageListener(messageHandlerInWorker); |
| v8::V8::SetFatalErrorHandler(reportFatalErrorInWorker); |
| |
| v8::ResourceConstraints resourceConstraints; |
| uint32_t here; |
| resourceConstraints.set_stack_limit(&here - kWorkerMaxStackSize / sizeof(uint32_t*)); |
| v8::SetResourceConstraints(&resourceConstraints); |
| |
| V8PerIsolateData::ensureInitialized(isolate); |
| } |
| |
| } // namespace WebCore |