bool tryParseAttributeReference(const StringPiece16& str, ResourceNameRef* outRef) {
StringPiece16 trimmedStr(util::trimWhitespace(str));
if (trimmedStr.empty()) {
return false;
}
if (*trimmedStr.data() == u'?') {
StringPiece16 package;
StringPiece16 type;
StringPiece16 entry;
if (!extractResourceName(trimmedStr.substr(1, trimmedStr.size() - 1),
&package, &type, &entry)) {
return false;
}
if (!type.empty() && type != u"attr") {
return false;
}
if (entry.empty()) {
return false;
}
if (outRef) {
outRef->package = package;
outRef->type = ResourceType::kAttr;
outRef->entry = entry;
}
return true;
}
return false;
}
static void promiseRejectHandlerInMainThread(v8::PromiseRejectMessage data)
{
ASSERT(isMainThread());
if (data.GetEvent() == v8::kPromiseHandlerAddedAfterReject) {
rejectedPromisesOnMainThread().handlerAdded(data);
return;
}
ASSERT(data.GetEvent() == v8::kPromiseRejectWithNoHandler);
v8::Local<v8::Promise> promise = data.GetPromise();
v8::Isolate* isolate = promise->GetIsolate();
// There is no entered window during microtask callbacks from V8,
// thus we call toDOMWindow() instead of enteredDOMWindow().
LocalDOMWindow* window = currentDOMWindow(isolate);
if (!window || !window->isCurrentlyDisplayedInFrame())
return;
v8::Local<v8::Value> exception = data.GetValue();
if (V8DOMWrapper::isWrapper(isolate, exception)) {
// Try to get the stack & location from a wrapped exception object (e.g. DOMException).
ASSERT(exception->IsObject());
v8::Local<v8::Object> obj = v8::Local<v8::Object>::Cast(exception);
v8::Local<v8::Value> error = V8HiddenValue::getHiddenValue(isolate, obj, V8HiddenValue::error(isolate));
if (!error.IsEmpty())
exception = error;
}
int scriptId = 0;
int lineNumber = 0;
int columnNumber = 0;
String resourceName;
String errorMessage;
RefPtrWillBeRawPtr<ScriptCallStack> callStack = nullptr;
v8::Local<v8::Message> message = v8::Exception::CreateMessage(exception);
if (!message.IsEmpty()) {
if (v8Call(message->GetLineNumber(isolate->GetCurrentContext()), lineNumber)
&& v8Call(message->GetStartColumn(isolate->GetCurrentContext()), columnNumber))
++columnNumber;
resourceName = extractResourceName(message, window->document());
errorMessage = toCoreStringWithNullCheck(message->Get());
callStack = extractCallStack(isolate, message, &scriptId);
} else if (!exception.IsEmpty() && exception->IsInt32()) {
// For Smi's the message would be empty.
errorMessage = "Uncaught " + String::number(exception.As<v8::Integer>()->Value());
}
String messageForConsole = extractMessageForConsole(isolate, data.GetValue());
if (!messageForConsole.isEmpty())
errorMessage = "Uncaught " + messageForConsole;
ScriptState* scriptState = ScriptState::current(isolate);
rejectedPromisesOnMainThread().rejectedWithNoHandler(scriptState, data, errorMessage, resourceName, scriptId, lineNumber, columnNumber, callStack);
}
static void messageHandlerInMainThread(v8::Local<v8::Message> message, v8::Local<v8::Value> data)
{
ASSERT(isMainThread());
v8::Isolate* isolate = v8::Isolate::GetCurrent();
// If called during context initialization, there will be no entered window.
LocalDOMWindow* enteredWindow = enteredDOMWindow(isolate);
if (!enteredWindow || !enteredWindow->isCurrentlyDisplayedInFrame())
return;
int scriptId = 0;
RefPtrWillBeRawPtr<ScriptCallStack> callStack = extractCallStack(isolate, message, &scriptId);
String resourceName = extractResourceName(message, enteredWindow->document());
AccessControlStatus accessControlStatus = NotSharableCrossOrigin;
if (message->IsOpaque())
accessControlStatus = OpaqueResource;
else if (message->IsSharedCrossOrigin())
accessControlStatus = SharableCrossOrigin;
ScriptState* scriptState = ScriptState::current(isolate);
String errorMessage = toCoreStringWithNullCheck(message->Get());
int lineNumber = 0;
int columnNumber = 0;
if (v8Call(message->GetLineNumber(scriptState->context()), lineNumber)
&& v8Call(message->GetStartColumn(scriptState->context()), columnNumber))
++columnNumber;
RefPtrWillBeRawPtr<ErrorEvent> event = ErrorEvent::create(errorMessage, resourceName, lineNumber, columnNumber, &scriptState->world());
String messageForConsole = extractMessageForConsole(isolate, data);
if (!messageForConsole.isEmpty())
event->setUnsanitizedMessage("Uncaught " + messageForConsole);
// 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?
LocalFrame* frame = enteredWindow->document()->frame();
if (frame && frame->script().existingWindowProxy(scriptState->world())) {
V8ErrorHandler::storeExceptionOnErrorEventWrapper(isolate, event.get(), data, scriptState->context()->Global());
}
if (scriptState->world().isPrivateScriptIsolatedWorld()) {
// We allow a private script to dispatch error events even in a EventDispatchForbiddenScope scope.
// Without having this ability, it's hard to debug the private script because syntax errors
// in the private script are not reported to console (the private script just crashes silently).
// Allowing error events in private scripts is safe because error events don't propagate to
// other isolated worlds (which means that the error events won't fire any event listeners
// in user's scripts).
EventDispatchForbiddenScope::AllowUserAgentEvents allowUserAgentEvents;
enteredWindow->document()->reportException(event.release(), scriptId, callStack, accessControlStatus);
} else {
enteredWindow->document()->reportException(event.release(), scriptId, callStack, accessControlStatus);
}
}
/*
* Style parent's are a bit different. We accept the following formats:
*
* @[[*]package:][style/]<entry>
* ?[[*]package:]style/<entry>
* <[*]package>:[style/]<entry>
* [[*]package:style/]<entry>
*/
Maybe<Reference> parseStyleParentReference(const StringPiece16& str, std::string* outError) {
if (str.empty()) {
return {};
}
StringPiece16 name = str;
bool hasLeadingIdentifiers = false;
bool privateRef = false;
// Skip over these identifiers. A style's parent is a normal reference.
if (name.data()[0] == u'@' || name.data()[0] == u'?') {
hasLeadingIdentifiers = true;
name = name.substr(1, name.size() - 1);
}
if (name.data()[0] == u'*') {
privateRef = true;
name = name.substr(1, name.size() - 1);
}
ResourceNameRef ref;
ref.type = ResourceType::kStyle;
StringPiece16 typeStr;
extractResourceName(name, &ref.package, &typeStr, &ref.entry);
if (!typeStr.empty()) {
// If we have a type, make sure it is a Style.
const ResourceType* parsedType = parseResourceType(typeStr);
if (!parsedType || *parsedType != ResourceType::kStyle) {
std::stringstream err;
err << "invalid resource type '" << typeStr << "' for parent of style";
*outError = err.str();
return {};
}
}
if (!hasLeadingIdentifiers && ref.package.empty() && !typeStr.empty()) {
std::stringstream err;
err << "invalid parent reference '" << str << "'";
*outError = err.str();
return {};
}
Reference result(ref);
result.privateReference = privateRef;
return result;
}
bool parseResourceName(const StringPiece16& str, ResourceNameRef* outRef, bool* outPrivate) {
if (str.empty()) {
return false;
}
size_t offset = 0;
bool priv = false;
if (str.data()[0] == u'*') {
priv = true;
offset = 1;
}
StringPiece16 package;
StringPiece16 type;
StringPiece16 entry;
if (!extractResourceName(str.substr(offset, str.size() - offset), &package, &type, &entry)) {
return false;
}
const ResourceType* parsedType = parseResourceType(type);
if (!parsedType) {
return false;
}
if (entry.empty()) {
return false;
}
if (outRef) {
outRef->package = package;
outRef->type = *parsedType;
outRef->entry = entry;
}
if (outPrivate) {
*outPrivate = priv;
}
return true;
}