| /* |
| * Copyright (C) 2004-2016 Apple Inc. All rights reserved. |
| * Copyright (C) 2005-2007 Alexey Proskuryakov <ap@webkit.org> |
| * Copyright (C) 2007, 2008 Julien Chaffraix <jchaffraix@webkit.org> |
| * Copyright (C) 2008, 2011 Google Inc. All rights reserved. |
| * Copyright (C) 2012 Intel Corporation |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "config.h" |
| #include "XMLHttpRequest.h" |
| |
| #include "Blob.h" |
| #include "CachedResourceRequestInitiators.h" |
| #include "ContentSecurityPolicy.h" |
| #include "CrossOriginAccessControl.h" |
| #include "DOMFormData.h" |
| #include "DOMWindow.h" |
| #include "Event.h" |
| #include "EventNames.h" |
| #include "File.h" |
| #include "HTMLDocument.h" |
| #include "HTMLIFrameElement.h" |
| #include "HTTPHeaderNames.h" |
| #include "HTTPHeaderValues.h" |
| #include "HTTPParsers.h" |
| #include "InspectorInstrumentation.h" |
| #include "JSDOMBinding.h" |
| #include "JSDOMWindow.h" |
| #include "MIMETypeRegistry.h" |
| #include "MemoryCache.h" |
| #include "ParsedContentType.h" |
| #include "ResourceError.h" |
| #include "ResourceRequest.h" |
| #include "RuntimeApplicationChecks.h" |
| #include "SecurityOriginPolicy.h" |
| #include "Settings.h" |
| #include "SharedBuffer.h" |
| #include "StringAdaptors.h" |
| #include "TextResourceDecoder.h" |
| #include "ThreadableLoader.h" |
| #include "XMLDocument.h" |
| #include "XMLHttpRequestProgressEvent.h" |
| #include "XMLHttpRequestUpload.h" |
| #include "markup.h" |
| #include <JavaScriptCore/ArrayBuffer.h> |
| #include <JavaScriptCore/ArrayBufferView.h> |
| #include <JavaScriptCore/JSCInlines.h> |
| #include <JavaScriptCore/JSLock.h> |
| #include <wtf/IsoMallocInlines.h> |
| #include <wtf/RefCountedLeakCounter.h> |
| #include <wtf/StdLibExtras.h> |
| #include <wtf/text/CString.h> |
| |
| namespace WebCore { |
| |
| static const Seconds maximumIntervalForUserGestureForwarding { 10_s }; |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(XMLHttpRequest); |
| |
| DEFINE_DEBUG_ONLY_GLOBAL(WTF::RefCountedLeakCounter, xmlHttpRequestCounter, ("XMLHttpRequest")); |
| |
| // Histogram enum to see when we can deprecate xhr.send(ArrayBuffer). |
| enum XMLHttpRequestSendArrayBufferOrView { |
| XMLHttpRequestSendArrayBuffer, |
| XMLHttpRequestSendArrayBufferView, |
| XMLHttpRequestSendArrayBufferOrViewMax, |
| }; |
| |
| static void replaceCharsetInMediaTypeIfNeeded(String& mediaType) |
| { |
| auto parsedContentType = ParsedContentType::create(mediaType); |
| if (!parsedContentType || parsedContentType->charset().isEmpty() || equalIgnoringASCIICase(parsedContentType->charset(), "UTF-8")) |
| return; |
| |
| parsedContentType->setCharset("UTF-8"); |
| mediaType = parsedContentType->serialize(); |
| } |
| |
| static void logConsoleError(ScriptExecutionContext* context, const String& message) |
| { |
| if (!context) |
| return; |
| // FIXME: It's not good to report the bad usage without indicating what source line it came from. |
| // We should pass additional parameters so we can tell the console where the mistake occurred. |
| context->addConsoleMessage(MessageSource::JS, MessageLevel::Error, message); |
| } |
| |
| Ref<XMLHttpRequest> XMLHttpRequest::create(ScriptExecutionContext& context) |
| { |
| auto xmlHttpRequest = adoptRef(*new XMLHttpRequest(context)); |
| xmlHttpRequest->suspendIfNeeded(); |
| return xmlHttpRequest; |
| } |
| |
| XMLHttpRequest::XMLHttpRequest(ScriptExecutionContext& context) |
| : ActiveDOMObject(&context) |
| , m_async(true) |
| , m_includeCredentials(false) |
| , m_sendFlag(false) |
| , m_createdDocument(false) |
| , m_error(false) |
| , m_uploadListenerFlag(false) |
| , m_uploadComplete(false) |
| , m_wasAbortedByClient(false) |
| , m_responseCacheIsValid(false) |
| , m_dispatchErrorOnResuming(false) |
| , m_readyState(static_cast<unsigned>(UNSENT)) |
| , m_responseType(static_cast<unsigned>(ResponseType::EmptyString)) |
| , m_progressEventThrottle(this) |
| , m_resumeTimer(*this, &XMLHttpRequest::resumeTimerFired) |
| , m_networkErrorTimer(*this, &XMLHttpRequest::networkErrorTimerFired) |
| , m_timeoutTimer(*this, &XMLHttpRequest::didReachTimeout) |
| , m_maximumIntervalForUserGestureForwarding(maximumIntervalForUserGestureForwarding) |
| { |
| #ifndef NDEBUG |
| xmlHttpRequestCounter.increment(); |
| #endif |
| } |
| |
| XMLHttpRequest::~XMLHttpRequest() |
| { |
| #ifndef NDEBUG |
| xmlHttpRequestCounter.decrement(); |
| #endif |
| } |
| |
| Document* XMLHttpRequest::document() const |
| { |
| ASSERT(scriptExecutionContext()); |
| return downcast<Document>(scriptExecutionContext()); |
| } |
| |
| SecurityOrigin* XMLHttpRequest::securityOrigin() const |
| { |
| return scriptExecutionContext()->securityOrigin(); |
| } |
| |
| ExceptionOr<OwnedString> XMLHttpRequest::responseText() |
| { |
| if (responseType() != ResponseType::EmptyString && responseType() != ResponseType::Text) |
| return Exception { InvalidStateError }; |
| return OwnedString { responseTextIgnoringResponseType() }; |
| } |
| |
| void XMLHttpRequest::didCacheResponse() |
| { |
| ASSERT(doneWithoutErrors()); |
| m_responseCacheIsValid = true; |
| m_responseBuilder.clear(); |
| } |
| |
| ExceptionOr<Document*> XMLHttpRequest::responseXML() |
| { |
| ASSERT(scriptExecutionContext()->isDocument()); |
| |
| if (responseType() != ResponseType::EmptyString && responseType() != ResponseType::Document) |
| return Exception { InvalidStateError }; |
| |
| if (!doneWithoutErrors()) |
| return nullptr; |
| |
| if (!m_createdDocument) { |
| auto& context = downcast<Document>(*scriptExecutionContext()); |
| |
| String mimeType = responseMIMEType(); |
| bool isHTML = equalLettersIgnoringASCIICase(mimeType, "text/html"); |
| |
| // The W3C spec requires the final MIME type to be some valid XML type, or text/html. |
| // If it is text/html, then the responseType of "document" must have been supplied explicitly. |
| if ((m_response.isHTTP() && !responseIsXML() && !isHTML) |
| || (isHTML && responseType() == ResponseType::EmptyString)) { |
| m_responseDocument = nullptr; |
| } else { |
| if (isHTML) |
| m_responseDocument = HTMLDocument::create(nullptr, m_url); |
| else |
| m_responseDocument = XMLDocument::create(nullptr, m_url); |
| m_responseDocument->overrideLastModified(m_response.lastModified()); |
| m_responseDocument->setContent(m_responseBuilder.toStringPreserveCapacity()); |
| m_responseDocument->setContextDocument(context); |
| m_responseDocument->setSecurityOriginPolicy(context.securityOriginPolicy()); |
| m_responseDocument->overrideMIMEType(mimeType); |
| |
| if (!m_responseDocument->wellFormed()) |
| m_responseDocument = nullptr; |
| } |
| m_createdDocument = true; |
| } |
| |
| return m_responseDocument.get(); |
| } |
| |
| Ref<Blob> XMLHttpRequest::createResponseBlob() |
| { |
| ASSERT(responseType() == ResponseType::Blob); |
| ASSERT(doneWithoutErrors()); |
| |
| // FIXME: We just received the data from NetworkProcess, and are sending it back. This is inefficient. |
| Vector<uint8_t> data; |
| if (m_binaryResponseBuilder) |
| data.append(m_binaryResponseBuilder->data(), m_binaryResponseBuilder->size()); |
| m_binaryResponseBuilder = nullptr; |
| String normalizedContentType = Blob::normalizedContentType(responseMIMEType()); // responseMIMEType defaults to text/xml which may be incorrect. |
| return Blob::create(WTFMove(data), normalizedContentType); |
| } |
| |
| RefPtr<ArrayBuffer> XMLHttpRequest::createResponseArrayBuffer() |
| { |
| ASSERT(responseType() == ResponseType::Arraybuffer); |
| ASSERT(doneWithoutErrors()); |
| |
| auto result = m_binaryResponseBuilder ? m_binaryResponseBuilder->tryCreateArrayBuffer() : ArrayBuffer::create(nullptr, 0); |
| m_binaryResponseBuilder = nullptr; |
| return result; |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::setTimeout(unsigned timeout) |
| { |
| if (scriptExecutionContext()->isDocument() && !m_async) { |
| logConsoleError(scriptExecutionContext(), "XMLHttpRequest.timeout cannot be set for synchronous HTTP(S) requests made from the window context."); |
| return Exception { InvalidAccessError }; |
| } |
| m_timeoutMilliseconds = timeout; |
| if (!m_timeoutTimer.isActive()) |
| return { }; |
| |
| // If timeout is zero, we should use the default network timeout. But we disabled it so let's mimic it with a 60 seconds timeout value. |
| Seconds interval = Seconds { m_timeoutMilliseconds ? m_timeoutMilliseconds / 1000. : 60. } - (MonotonicTime::now() - m_sendingTime); |
| m_timeoutTimer.startOneShot(std::max(interval, 0_s)); |
| return { }; |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::setResponseType(ResponseType type) |
| { |
| if (!scriptExecutionContext()->isDocument() && type == ResponseType::Document) |
| return { }; |
| |
| if (readyState() >= LOADING) |
| return Exception { InvalidStateError }; |
| |
| // Newer functionality is not available to synchronous requests in window contexts, as a spec-mandated |
| // attempt to discourage synchronous XHR use. responseType is one such piece of functionality. |
| // We'll only disable this functionality for HTTP(S) requests since sync requests for local protocols |
| // such as file: and data: still make sense to allow. |
| if (!m_async && scriptExecutionContext()->isDocument() && m_url.protocolIsInHTTPFamily()) { |
| logConsoleError(scriptExecutionContext(), "XMLHttpRequest.responseType cannot be changed for synchronous HTTP(S) requests made from the window context."); |
| return Exception { InvalidAccessError }; |
| } |
| |
| m_responseType = static_cast<unsigned>(type); |
| return { }; |
| } |
| |
| String XMLHttpRequest::responseURL() const |
| { |
| URL responseURL(m_response.url()); |
| responseURL.removeFragmentIdentifier(); |
| |
| return responseURL.string(); |
| } |
| |
| XMLHttpRequestUpload& XMLHttpRequest::upload() |
| { |
| if (!m_upload) |
| m_upload = makeUnique<XMLHttpRequestUpload>(*this); |
| return *m_upload; |
| } |
| |
| void XMLHttpRequest::changeState(State newState) |
| { |
| if (readyState() != newState) { |
| m_readyState = static_cast<State>(newState); |
| if (readyState() == DONE) { |
| // The XHR object itself holds on to the responseText, and |
| // thus has extra cost even independent of any |
| // responseText or responseXML objects it has handed |
| // out. But it is protected from GC while loading, so this |
| // can't be recouped until the load is done, so only |
| // report the extra cost at that point. |
| if (auto* context = scriptExecutionContext()) { |
| JSC::VM& vm = context->vm(); |
| JSC::JSLockHolder lock(vm); |
| vm.heap.reportExtraMemoryAllocated(memoryCost()); |
| } |
| } |
| callReadyStateChangeListener(); |
| } |
| } |
| |
| void XMLHttpRequest::callReadyStateChangeListener() |
| { |
| if (!scriptExecutionContext()) |
| return; |
| |
| // Check whether sending load and loadend events before sending readystatechange event, as it may change m_error/m_readyState values. |
| bool shouldSendLoadEvent = (readyState() == DONE && !m_error); |
| |
| if (m_async || (readyState() <= OPENED || readyState() == DONE)) { |
| m_progressEventThrottle.dispatchReadyStateChangeEvent(Event::create(eventNames().readystatechangeEvent, Event::CanBubble::No, Event::IsCancelable::No), |
| readyState() == DONE ? FlushProgressEvent : DoNotFlushProgressEvent); |
| } |
| |
| if (shouldSendLoadEvent) { |
| m_progressEventThrottle.dispatchProgressEvent(eventNames().loadEvent); |
| m_progressEventThrottle.dispatchProgressEvent(eventNames().loadendEvent); |
| } |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::setWithCredentials(bool value) |
| { |
| if (readyState() > OPENED || m_sendFlag) |
| return Exception { InvalidStateError }; |
| |
| m_includeCredentials = value; |
| return { }; |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::open(const String& method, const String& url) |
| { |
| // If the async argument is omitted, set async to true. |
| return open(method, scriptExecutionContext()->completeURL(url), true); |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::open(const String& method, const URL& url, bool async) |
| { |
| if (!isValidHTTPToken(method)) |
| return Exception { SyntaxError }; |
| |
| if (isForbiddenMethod(method)) |
| return Exception { SecurityError }; |
| |
| if (!url.isValid()) |
| return Exception { SyntaxError }; |
| |
| if (!async && scriptExecutionContext()->isDocument()) { |
| // Newer functionality is not available to synchronous requests in window contexts, as a spec-mandated |
| // attempt to discourage synchronous XHR use. responseType is one such piece of functionality. |
| // We'll only disable this functionality for HTTP(S) requests since sync requests for local protocols |
| // such as file: and data: still make sense to allow. |
| if (url.protocolIsInHTTPFamily() && responseType() != ResponseType::EmptyString) { |
| logConsoleError(scriptExecutionContext(), "Synchronous HTTP(S) requests made from the window context cannot have XMLHttpRequest.responseType set."); |
| return Exception { InvalidAccessError }; |
| } |
| |
| // Similarly, timeouts are disabled for synchronous requests as well. |
| if (m_timeoutMilliseconds > 0) { |
| logConsoleError(scriptExecutionContext(), "Synchronous XMLHttpRequests must not have a timeout value set."); |
| return Exception { InvalidAccessError }; |
| } |
| } |
| |
| if (!internalAbort()) |
| return { }; |
| |
| m_sendFlag = false; |
| m_uploadListenerFlag = false; |
| m_method = normalizeHTTPMethod(method); |
| m_error = false; |
| m_uploadComplete = false; |
| m_wasAbortedByClient = false; |
| |
| // clear stuff from possible previous load |
| clearResponse(); |
| clearRequest(); |
| |
| m_url = url; |
| scriptExecutionContext()->contentSecurityPolicy()->upgradeInsecureRequestIfNeeded(m_url, ContentSecurityPolicy::InsecureRequestType::Load); |
| |
| m_async = async; |
| |
| ASSERT(!m_loader); |
| |
| changeState(OPENED); |
| |
| return { }; |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::open(const String& method, const String& url, bool async, const String& user, const String& password) |
| { |
| URL urlWithCredentials = scriptExecutionContext()->completeURL(url); |
| if (!user.isNull()) |
| urlWithCredentials.setUser(user); |
| if (!password.isNull()) |
| urlWithCredentials.setPass(password); |
| |
| return open(method, urlWithCredentials, async); |
| } |
| |
| Optional<ExceptionOr<void>> XMLHttpRequest::prepareToSend() |
| { |
| // A return value other than WTF::nullopt means we should not try to send, and we should return that value to the caller. |
| // WTF::nullopt means we are ready to send and should continue with the send algorithm. |
| |
| if (!scriptExecutionContext()) |
| return ExceptionOr<void> { }; |
| |
| auto& context = *scriptExecutionContext(); |
| |
| if (readyState() != OPENED || m_sendFlag) |
| return ExceptionOr<void> { Exception { InvalidStateError } }; |
| ASSERT(!m_loader); |
| |
| // FIXME: Convert this to check the isolated world's Content Security Policy once webkit.org/b/104520 is solved. |
| if (!context.shouldBypassMainWorldContentSecurityPolicy() && !context.contentSecurityPolicy()->allowConnectToSource(m_url)) { |
| if (!m_async) |
| return ExceptionOr<void> { Exception { NetworkError } }; |
| setPendingActivity(*this); |
| m_timeoutTimer.stop(); |
| m_networkErrorTimer.startOneShot(0_s); |
| return ExceptionOr<void> { }; |
| } |
| |
| m_error = false; |
| return WTF::nullopt; |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::send(Optional<SendTypes>&& sendType) |
| { |
| InspectorInstrumentation::willSendXMLHttpRequest(scriptExecutionContext(), url()); |
| m_userGestureToken = UserGestureIndicator::currentUserGesture(); |
| |
| ExceptionOr<void> result; |
| if (!sendType) |
| result = send(); |
| else { |
| result = WTF::switchOn(sendType.value(), |
| [this] (const RefPtr<Document>& document) -> ExceptionOr<void> { return send(*document); }, |
| [this] (const RefPtr<Blob>& blob) -> ExceptionOr<void> { return send(*blob); }, |
| [this] (const RefPtr<JSC::ArrayBufferView>& arrayBufferView) -> ExceptionOr<void> { return send(*arrayBufferView); }, |
| [this] (const RefPtr<JSC::ArrayBuffer>& arrayBuffer) -> ExceptionOr<void> { return send(*arrayBuffer); }, |
| [this] (const RefPtr<DOMFormData>& formData) -> ExceptionOr<void> { return send(*formData); }, |
| [this] (const String& string) -> ExceptionOr<void> { return send(string); } |
| ); |
| } |
| |
| return result; |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::send(Document& document) |
| { |
| if (auto result = prepareToSend()) |
| return WTFMove(result.value()); |
| |
| if (m_method != "GET" && m_method != "HEAD") { |
| if (!m_requestHeaders.contains(HTTPHeaderName::ContentType)) { |
| // FIXME: this should include the charset used for encoding. |
| m_requestHeaders.set(HTTPHeaderName::ContentType, document.isHTMLDocument() ? "text/html;charset=UTF-8"_s : "application/xml;charset=UTF-8"_s); |
| } else { |
| String contentType = m_requestHeaders.get(HTTPHeaderName::ContentType); |
| replaceCharsetInMediaTypeIfNeeded(contentType); |
| m_requestHeaders.set(HTTPHeaderName::ContentType, contentType); |
| } |
| |
| // FIXME: According to XMLHttpRequest Level 2, this should use the Document.innerHTML algorithm |
| // from the HTML5 specification to serialize the document. |
| m_requestEntityBody = FormData::create(UTF8Encoding().encode(serializeFragment(document, SerializedNodes::SubtreeIncludingNode), UnencodableHandling::Entities)); |
| if (m_upload) |
| m_requestEntityBody->setAlwaysStream(true); |
| } |
| |
| return createRequest(); |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::send(const String& body) |
| { |
| if (auto result = prepareToSend()) |
| return WTFMove(result.value()); |
| |
| if (!body.isNull() && m_method != "GET" && m_method != "HEAD") { |
| String contentType = m_requestHeaders.get(HTTPHeaderName::ContentType); |
| if (contentType.isNull()) { |
| m_requestHeaders.set(HTTPHeaderName::ContentType, HTTPHeaderValues::textPlainContentType()); |
| } else { |
| replaceCharsetInMediaTypeIfNeeded(contentType); |
| m_requestHeaders.set(HTTPHeaderName::ContentType, contentType); |
| } |
| |
| m_requestEntityBody = FormData::create(UTF8Encoding().encode(body, UnencodableHandling::Entities)); |
| if (m_upload) |
| m_requestEntityBody->setAlwaysStream(true); |
| } |
| |
| return createRequest(); |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::send(Blob& body) |
| { |
| if (auto result = prepareToSend()) |
| return WTFMove(result.value()); |
| |
| if (m_method != "GET" && m_method != "HEAD") { |
| if (!m_url.protocolIsInHTTPFamily()) { |
| // FIXME: We would like to support posting Blobs to non-http URLs (e.g. custom URL schemes) |
| // but because of the architecture of blob-handling that will require a fair amount of work. |
| |
| ASCIILiteral consoleMessage { "POST of a Blob to non-HTTP protocols in XMLHttpRequest.send() is currently unsupported."_s }; |
| scriptExecutionContext()->addConsoleMessage(MessageSource::JS, MessageLevel::Warning, consoleMessage); |
| |
| return createRequest(); |
| } |
| |
| if (!m_requestHeaders.contains(HTTPHeaderName::ContentType)) { |
| const String& blobType = body.type(); |
| if (!blobType.isEmpty() && isValidContentType(blobType)) |
| m_requestHeaders.set(HTTPHeaderName::ContentType, blobType); |
| else { |
| // From FileAPI spec, whenever media type cannot be determined, empty string must be returned. |
| m_requestHeaders.set(HTTPHeaderName::ContentType, emptyString()); |
| } |
| } |
| |
| m_requestEntityBody = FormData::create(); |
| m_requestEntityBody->appendBlob(body.url()); |
| } |
| |
| return createRequest(); |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::send(DOMFormData& body) |
| { |
| if (auto result = prepareToSend()) |
| return WTFMove(result.value()); |
| |
| if (m_method != "GET" && m_method != "HEAD") { |
| m_requestEntityBody = FormData::createMultiPart(body); |
| if (!m_requestHeaders.contains(HTTPHeaderName::ContentType)) |
| m_requestHeaders.set(HTTPHeaderName::ContentType, makeString("multipart/form-data; boundary=", m_requestEntityBody->boundary().data())); |
| } |
| |
| return createRequest(); |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::send(ArrayBuffer& body) |
| { |
| ASCIILiteral consoleMessage { "ArrayBuffer is deprecated in XMLHttpRequest.send(). Use ArrayBufferView instead."_s }; |
| scriptExecutionContext()->addConsoleMessage(MessageSource::JS, MessageLevel::Warning, consoleMessage); |
| return sendBytesData(body.data(), body.byteLength()); |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::send(ArrayBufferView& body) |
| { |
| return sendBytesData(body.baseAddress(), body.byteLength()); |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::sendBytesData(const void* data, size_t length) |
| { |
| if (auto result = prepareToSend()) |
| return WTFMove(result.value()); |
| |
| if (m_method != "GET" && m_method != "HEAD") { |
| m_requestEntityBody = FormData::create(data, length); |
| if (m_upload) |
| m_requestEntityBody->setAlwaysStream(true); |
| } |
| |
| return createRequest(); |
| } |
| |
| static inline bool isSyncXHRAllowedByFeaturePolicy(Document& document) |
| { |
| auto& topDocument = document.topDocument(); |
| if (&document != &topDocument) { |
| for (auto* ancestorDocument = &document; ancestorDocument != &topDocument; ancestorDocument = ancestorDocument->parentDocument()) { |
| auto* element = ancestorDocument->ownerElement(); |
| ASSERT(element); |
| if (element && is<HTMLIFrameElement>(*element)) { |
| auto& featurePolicy = downcast<HTMLIFrameElement>(*element).featurePolicy(); |
| if (!featurePolicy.allows(FeaturePolicy::Type::SyncXHR, ancestorDocument->securityOrigin().data())) |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::createRequest() |
| { |
| // Only GET request is supported for blob URL. |
| if (!m_async && m_url.protocolIsBlob() && m_method != "GET") |
| return Exception { NetworkError }; |
| |
| if (m_async && m_upload && m_upload->hasEventListeners()) |
| m_uploadListenerFlag = true; |
| |
| ResourceRequest request(m_url); |
| request.setRequester(ResourceRequest::Requester::XHR); |
| request.setInitiatorIdentifier(scriptExecutionContext()->resourceRequestIdentifier()); |
| request.setHTTPMethod(m_method); |
| |
| if (m_requestEntityBody) { |
| ASSERT(m_method != "GET"); |
| ASSERT(m_method != "HEAD"); |
| request.setHTTPBody(WTFMove(m_requestEntityBody)); |
| } |
| |
| if (!m_requestHeaders.isEmpty()) |
| request.setHTTPHeaderFields(m_requestHeaders); |
| |
| ThreadableLoaderOptions options; |
| options.sendLoadCallbacks = SendCallbackPolicy::SendCallbacks; |
| // The presence of upload event listeners forces us to use preflighting because POSTing to an URL that does not |
| // permit cross origin requests should look exactly like POSTing to an URL that does not respond at all. |
| options.preflightPolicy = m_uploadListenerFlag ? PreflightPolicy::Force : PreflightPolicy::Consider; |
| options.credentials = m_includeCredentials ? FetchOptions::Credentials::Include : FetchOptions::Credentials::SameOrigin; |
| options.mode = FetchOptions::Mode::Cors; |
| options.contentSecurityPolicyEnforcement = scriptExecutionContext()->shouldBypassMainWorldContentSecurityPolicy() ? ContentSecurityPolicyEnforcement::DoNotEnforce : ContentSecurityPolicyEnforcement::EnforceConnectSrcDirective; |
| options.initiator = cachedResourceRequestInitiators().xmlhttprequest; |
| options.sameOriginDataURLFlag = SameOriginDataURLFlag::Set; |
| options.filteringPolicy = ResponseFilteringPolicy::Enable; |
| options.sniffContentEncoding = ContentEncodingSniffingPolicy::DoNotSniff; |
| |
| if (m_timeoutMilliseconds) { |
| if (!m_async) |
| request.setTimeoutInterval(m_timeoutMilliseconds / 1000.0); |
| else { |
| request.setTimeoutInterval(std::numeric_limits<double>::infinity()); |
| m_sendingTime = MonotonicTime::now(); |
| m_timeoutTimer.startOneShot(1_ms * m_timeoutMilliseconds); |
| } |
| } |
| |
| m_exceptionCode = WTF::nullopt; |
| m_error = false; |
| m_uploadComplete = !request.httpBody(); |
| m_sendFlag = true; |
| |
| if (m_async) { |
| m_progressEventThrottle.dispatchProgressEvent(eventNames().loadstartEvent); |
| if (!m_uploadComplete && m_uploadListenerFlag) |
| m_upload->dispatchProgressEvent(eventNames().loadstartEvent, 0, request.httpBody()->lengthInBytes()); |
| |
| if (readyState() != OPENED || !m_sendFlag || m_loader) |
| return { }; |
| |
| // ThreadableLoader::create can return null here, for example if we're no longer attached to a page or if a content blocker blocks the load. |
| // This is true while running onunload handlers. |
| // FIXME: Maybe we need to be able to send XMLHttpRequests from onunload, <http://bugs.webkit.org/show_bug.cgi?id=10904>. |
| m_loader = ThreadableLoader::create(*scriptExecutionContext(), *this, WTFMove(request), options); |
| |
| // Either loader is null or some error was synchronously sent to us. |
| ASSERT(m_loader || !m_sendFlag); |
| |
| // Neither this object nor the JavaScript wrapper should be deleted while |
| // a request is in progress because we need to keep the listeners alive, |
| // and they are referenced by the JavaScript wrapper. |
| if (m_loader) |
| setPendingActivity(*this); |
| } else { |
| if (scriptExecutionContext()->isDocument() && !isSyncXHRAllowedByFeaturePolicy(*document())) |
| return Exception { NetworkError }; |
| |
| request.setDomainForCachePartition(scriptExecutionContext()->domainForCachePartition()); |
| InspectorInstrumentation::willLoadXHRSynchronously(scriptExecutionContext()); |
| ThreadableLoader::loadResourceSynchronously(*scriptExecutionContext(), WTFMove(request), *this, options); |
| InspectorInstrumentation::didLoadXHRSynchronously(scriptExecutionContext()); |
| } |
| |
| if (m_exceptionCode) |
| return Exception { m_exceptionCode.value() }; |
| if (m_error) |
| return Exception { NetworkError }; |
| return { }; |
| } |
| |
| void XMLHttpRequest::abort() |
| { |
| // internalAbort() calls unsetPendingActivity(this), which may release the last reference. |
| Ref<XMLHttpRequest> protectedThis(*this); |
| |
| m_wasAbortedByClient = true; |
| if (!internalAbort()) |
| return; |
| |
| clearResponseBuffers(); |
| |
| m_requestHeaders.clear(); |
| if ((readyState() == OPENED && m_sendFlag) || readyState() == HEADERS_RECEIVED || readyState() == LOADING) { |
| ASSERT(!m_loader); |
| m_sendFlag = false; |
| changeState(DONE); |
| dispatchErrorEvents(eventNames().abortEvent); |
| } |
| if (readyState() == DONE) |
| m_readyState = static_cast<State>(UNSENT); |
| } |
| |
| bool XMLHttpRequest::internalAbort() |
| { |
| m_error = true; |
| |
| // FIXME: when we add the support for multi-part XHR, we will have to think be careful with this initialization. |
| m_receivedLength = 0; |
| |
| m_decoder = nullptr; |
| |
| m_timeoutTimer.stop(); |
| |
| if (!m_loader) |
| return true; |
| |
| // Cancelling m_loader may trigger a window.onload callback which can call open() on the same xhr. |
| // This would create internalAbort reentrant call. |
| // m_loader is set to null before being cancelled to exit early in any reentrant internalAbort() call. |
| auto loader = WTFMove(m_loader); |
| loader->cancel(); |
| |
| // If window.onload callback calls open() and send() on the same xhr, m_loader is now set to a new value. |
| // The function calling internalAbort() should abort to let the open() and send() calls continue properly. |
| // We ask the function calling internalAbort() to exit by returning false. |
| // Save this information to a local variable since we are going to drop protection. |
| bool newLoadStarted = m_loader; |
| |
| unsetPendingActivity(*this); |
| |
| return !newLoadStarted; |
| } |
| |
| void XMLHttpRequest::clearResponse() |
| { |
| m_response = ResourceResponse(); |
| clearResponseBuffers(); |
| } |
| |
| void XMLHttpRequest::clearResponseBuffers() |
| { |
| m_responseBuilder.clear(); |
| m_responseEncoding = String(); |
| m_createdDocument = false; |
| m_responseDocument = nullptr; |
| m_binaryResponseBuilder = nullptr; |
| m_responseCacheIsValid = false; |
| } |
| |
| void XMLHttpRequest::clearRequest() |
| { |
| m_requestHeaders.clear(); |
| m_requestEntityBody = nullptr; |
| } |
| |
| void XMLHttpRequest::genericError() |
| { |
| clearResponse(); |
| clearRequest(); |
| m_sendFlag = false; |
| m_error = true; |
| |
| changeState(DONE); |
| } |
| |
| void XMLHttpRequest::networkError() |
| { |
| genericError(); |
| dispatchErrorEvents(eventNames().errorEvent); |
| internalAbort(); |
| } |
| |
| void XMLHttpRequest::networkErrorTimerFired() |
| { |
| networkError(); |
| unsetPendingActivity(*this); |
| } |
| |
| void XMLHttpRequest::abortError() |
| { |
| ASSERT(m_wasAbortedByClient); |
| genericError(); |
| dispatchErrorEvents(eventNames().abortEvent); |
| } |
| |
| size_t XMLHttpRequest::memoryCost() const |
| { |
| if (readyState() == DONE) |
| return m_responseBuilder.length() * 2; |
| return 0; |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::overrideMimeType(const String& mimeType) |
| { |
| if (readyState() == LOADING || readyState() == DONE) |
| return Exception { InvalidStateError }; |
| |
| m_mimeTypeOverride = "application/octet-stream"_s; |
| if (isValidContentType(mimeType)) |
| m_mimeTypeOverride = mimeType; |
| |
| return { }; |
| } |
| |
| ExceptionOr<void> XMLHttpRequest::setRequestHeader(const String& name, const String& value) |
| { |
| if (readyState() != OPENED || m_sendFlag) |
| return Exception { InvalidStateError }; |
| |
| String normalizedValue = stripLeadingAndTrailingHTTPSpaces(value); |
| if (!isValidHTTPToken(name) || !isValidHTTPHeaderValue(normalizedValue)) |
| return Exception { SyntaxError }; |
| |
| bool allowUnsafeHeaderField = false; |
| // FIXME: The allowSettingAnyXHRHeaderFromFileURLs setting currently only applies to Documents, not workers. |
| if (securityOrigin()->canLoadLocalResources() && scriptExecutionContext()->isDocument() && document()->settings().allowSettingAnyXHRHeaderFromFileURLs()) |
| allowUnsafeHeaderField = true; |
| if (!allowUnsafeHeaderField && isForbiddenHeaderName(name)) { |
| logConsoleError(scriptExecutionContext(), "Refused to set unsafe header \"" + name + "\""); |
| return { }; |
| } |
| |
| m_requestHeaders.add(name, normalizedValue); |
| return { }; |
| } |
| |
| String XMLHttpRequest::getAllResponseHeaders() const |
| { |
| if (readyState() < HEADERS_RECEIVED || m_error) |
| return emptyString(); |
| |
| if (!m_allResponseHeaders) { |
| Vector<String> headers; |
| headers.reserveInitialCapacity(m_response.httpHeaderFields().size()); |
| |
| for (auto& header : m_response.httpHeaderFields()) { |
| StringBuilder stringBuilder; |
| stringBuilder.append(header.key.convertToASCIILowercase()); |
| stringBuilder.appendLiteral(": "); |
| stringBuilder.append(header.value); |
| stringBuilder.appendLiteral("\r\n"); |
| headers.uncheckedAppend(stringBuilder.toString()); |
| } |
| std::sort(headers.begin(), headers.end(), WTF::codePointCompareLessThan); |
| |
| StringBuilder stringBuilder; |
| for (auto& header : headers) |
| stringBuilder.append(header); |
| m_allResponseHeaders = stringBuilder.toString(); |
| } |
| |
| return m_allResponseHeaders; |
| } |
| |
| String XMLHttpRequest::getResponseHeader(const String& name) const |
| { |
| if (readyState() < HEADERS_RECEIVED || m_error) |
| return String(); |
| |
| return m_response.httpHeaderField(name); |
| } |
| |
| String XMLHttpRequest::responseMIMEType() const |
| { |
| String mimeType = extractMIMETypeFromMediaType(m_mimeTypeOverride); |
| if (mimeType.isEmpty()) { |
| String contentType; |
| if (m_response.isHTTP()) |
| contentType = m_response.httpHeaderField(HTTPHeaderName::ContentType); |
| else |
| contentType = m_response.mimeType(); |
| if (auto parsedContentType = ParsedContentType::create(contentType)) |
| return parsedContentType->mimeType(); |
| return "text/xml"_s; |
| } |
| return mimeType; |
| } |
| |
| bool XMLHttpRequest::responseIsXML() const |
| { |
| return MIMETypeRegistry::isXMLMIMEType(responseMIMEType()); |
| } |
| |
| int XMLHttpRequest::status() const |
| { |
| if (readyState() == UNSENT || readyState() == OPENED || m_error) |
| return 0; |
| |
| return m_response.httpStatusCode(); |
| } |
| |
| String XMLHttpRequest::statusText() const |
| { |
| if (readyState() == UNSENT || readyState() == OPENED || m_error) |
| return String(); |
| |
| return m_response.httpStatusText(); |
| } |
| |
| void XMLHttpRequest::didFail(const ResourceError& error) |
| { |
| // If we are already in an error state, for instance we called abort(), bail out early. |
| if (m_error) |
| return; |
| |
| // The XHR specification says we should only fire an abort event if the cancelation was requested by the client. |
| if (m_wasAbortedByClient && error.isCancellation()) { |
| m_exceptionCode = AbortError; |
| abortError(); |
| return; |
| } |
| |
| // In case of worker sync timeouts. |
| if (error.isTimeout()) { |
| didReachTimeout(); |
| return; |
| } |
| |
| // In case didFail is called synchronously on an asynchronous XHR call, let's dispatch network error asynchronously |
| if (m_async && m_sendFlag && !m_loader) { |
| m_sendFlag = false; |
| setPendingActivity(*this); |
| m_timeoutTimer.stop(); |
| m_networkErrorTimer.startOneShot(0_s); |
| return; |
| } |
| m_exceptionCode = NetworkError; |
| networkError(); |
| } |
| |
| void XMLHttpRequest::didFinishLoading(unsigned long) |
| { |
| if (m_error) |
| return; |
| |
| if (readyState() < HEADERS_RECEIVED) |
| changeState(HEADERS_RECEIVED); |
| |
| if (m_decoder) |
| m_responseBuilder.append(m_decoder->flush()); |
| |
| m_responseBuilder.shrinkToFit(); |
| |
| bool hadLoader = m_loader; |
| m_loader = nullptr; |
| |
| m_sendFlag = false; |
| changeState(DONE); |
| m_responseEncoding = String(); |
| m_decoder = nullptr; |
| |
| m_timeoutTimer.stop(); |
| |
| if (hadLoader) |
| unsetPendingActivity(*this); |
| } |
| |
| void XMLHttpRequest::didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent) |
| { |
| if (!m_upload) |
| return; |
| |
| if (m_uploadListenerFlag) |
| m_upload->dispatchProgressEvent(eventNames().progressEvent, bytesSent, totalBytesToBeSent); |
| |
| if (bytesSent == totalBytesToBeSent && !m_uploadComplete) { |
| m_uploadComplete = true; |
| if (m_uploadListenerFlag) { |
| m_upload->dispatchProgressEvent(eventNames().loadEvent, bytesSent, totalBytesToBeSent); |
| m_upload->dispatchProgressEvent(eventNames().loadendEvent, bytesSent, totalBytesToBeSent); |
| } |
| } |
| } |
| |
| void XMLHttpRequest::didReceiveResponse(unsigned long, const ResourceResponse& response) |
| { |
| m_response = response; |
| } |
| |
| static inline bool shouldDecodeResponse(XMLHttpRequest::ResponseType type) |
| { |
| switch (type) { |
| case XMLHttpRequest::ResponseType::EmptyString: |
| case XMLHttpRequest::ResponseType::Document: |
| case XMLHttpRequest::ResponseType::Json: |
| case XMLHttpRequest::ResponseType::Text: |
| return true; |
| case XMLHttpRequest::ResponseType::Arraybuffer: |
| case XMLHttpRequest::ResponseType::Blob: |
| return false; |
| } |
| ASSERT_NOT_REACHED(); |
| return true; |
| } |
| |
| // https://xhr.spec.whatwg.org/#final-charset |
| TextEncoding XMLHttpRequest::finalResponseCharset() const |
| { |
| String label = m_responseEncoding; |
| |
| String overrideResponseCharset = extractCharsetFromMediaType(m_mimeTypeOverride); |
| if (!overrideResponseCharset.isEmpty()) |
| label = overrideResponseCharset; |
| |
| return TextEncoding(label); |
| } |
| |
| Ref<TextResourceDecoder> XMLHttpRequest::createDecoder() const |
| { |
| TextEncoding finalResponseCharset = this->finalResponseCharset(); |
| if (finalResponseCharset.isValid()) |
| return TextResourceDecoder::create("text/plain", finalResponseCharset); |
| |
| switch (responseType()) { |
| case ResponseType::EmptyString: |
| if (responseIsXML()) { |
| auto decoder = TextResourceDecoder::create("application/xml"); |
| // Don't stop on encoding errors, unlike it is done for other kinds of XML resources. This matches the behavior of previous WebKit versions, Firefox and Opera. |
| decoder->useLenientXMLDecoding(); |
| return decoder; |
| } |
| FALLTHROUGH; |
| case ResponseType::Text: |
| case ResponseType::Json: |
| return TextResourceDecoder::create("text/plain", "UTF-8"); |
| case ResponseType::Document: { |
| if (equalLettersIgnoringASCIICase(responseMIMEType(), "text/html")) |
| return TextResourceDecoder::create("text/html", "UTF-8"); |
| auto decoder = TextResourceDecoder::create("application/xml"); |
| // Don't stop on encoding errors, unlike it is done for other kinds of XML resources. This matches the behavior of previous WebKit versions, Firefox and Opera. |
| decoder->useLenientXMLDecoding(); |
| return decoder; |
| } |
| case ResponseType::Arraybuffer: |
| case ResponseType::Blob: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| return TextResourceDecoder::create("text/plain", "UTF-8"); |
| } |
| |
| void XMLHttpRequest::didReceiveData(const char* data, int len) |
| { |
| if (m_error) |
| return; |
| |
| if (readyState() < HEADERS_RECEIVED) |
| changeState(HEADERS_RECEIVED); |
| |
| if (!m_mimeTypeOverride.isEmpty()) |
| m_responseEncoding = extractCharsetFromMediaType(m_mimeTypeOverride); |
| if (m_responseEncoding.isEmpty()) |
| m_responseEncoding = m_response.textEncodingName(); |
| |
| bool useDecoder = shouldDecodeResponse(responseType()); |
| |
| if (useDecoder && !m_decoder) |
| m_decoder = createDecoder(); |
| |
| if (!len) |
| return; |
| |
| if (len == -1) |
| len = strlen(data); |
| |
| if (useDecoder) |
| m_responseBuilder.append(m_decoder->decode(data, len)); |
| else { |
| // Buffer binary data. |
| if (!m_binaryResponseBuilder) |
| m_binaryResponseBuilder = SharedBuffer::create(); |
| m_binaryResponseBuilder->append(data, len); |
| } |
| |
| if (!m_error) { |
| m_receivedLength += len; |
| |
| if (readyState() != LOADING) |
| changeState(LOADING); |
| else { |
| // Firefox calls readyStateChanged every time it receives data, 4449442 |
| callReadyStateChangeListener(); |
| } |
| |
| if (m_async) { |
| long long expectedLength = m_response.expectedContentLength(); |
| bool lengthComputable = expectedLength > 0 && m_receivedLength <= expectedLength; |
| unsigned long long total = lengthComputable ? expectedLength : 0; |
| m_progressEventThrottle.dispatchThrottledProgressEvent(lengthComputable, m_receivedLength, total); |
| } |
| } |
| } |
| |
| void XMLHttpRequest::dispatchEvent(Event& event) |
| { |
| if (m_userGestureToken && m_userGestureToken->hasExpired(m_maximumIntervalForUserGestureForwarding)) |
| m_userGestureToken = nullptr; |
| |
| if (readyState() != DONE || !m_userGestureToken || !m_userGestureToken->processingUserGesture()) { |
| EventTarget::dispatchEvent(event); |
| return; |
| } |
| |
| UserGestureIndicator gestureIndicator(m_userGestureToken, UserGestureToken::GestureScope::MediaOnly); |
| EventTarget::dispatchEvent(event); |
| } |
| |
| void XMLHttpRequest::dispatchErrorEvents(const AtomString& type) |
| { |
| if (!m_uploadComplete) { |
| m_uploadComplete = true; |
| if (m_upload && m_uploadListenerFlag) { |
| m_upload->dispatchProgressEvent(type, 0, 0); |
| m_upload->dispatchProgressEvent(eventNames().loadendEvent, 0, 0); |
| } |
| } |
| m_progressEventThrottle.dispatchProgressEvent(type); |
| m_progressEventThrottle.dispatchProgressEvent(eventNames().loadendEvent); |
| } |
| |
| void XMLHttpRequest::didReachTimeout() |
| { |
| // internalAbort() calls unsetPendingActivity(this), which may release the last reference. |
| Ref<XMLHttpRequest> protectedThis(*this); |
| if (!internalAbort()) |
| return; |
| |
| clearResponse(); |
| clearRequest(); |
| |
| m_sendFlag = false; |
| m_error = true; |
| m_exceptionCode = TimeoutError; |
| |
| if (!m_async) { |
| m_readyState = static_cast<State>(DONE); |
| m_exceptionCode = TimeoutError; |
| return; |
| } |
| |
| changeState(DONE); |
| |
| dispatchErrorEvents(eventNames().timeoutEvent); |
| } |
| |
| bool XMLHttpRequest::canSuspendForDocumentSuspension() const |
| { |
| // If the load event has not fired yet, cancelling the load in suspend() may cause |
| // the load event to be fired and arbitrary JS execution, which would be unsafe. |
| // Therefore, we prevent suspending in this case. |
| return !m_loader || document()->loadEventFinished(); |
| } |
| |
| const char* XMLHttpRequest::activeDOMObjectName() const |
| { |
| return "XMLHttpRequest"; |
| } |
| |
| void XMLHttpRequest::suspend(ReasonForSuspension reason) |
| { |
| m_progressEventThrottle.suspend(); |
| |
| if (m_resumeTimer.isActive()) { |
| m_resumeTimer.stop(); |
| m_dispatchErrorOnResuming = true; |
| } |
| |
| if (reason == ReasonForSuspension::PageCache && m_loader) { |
| // Going into PageCache, abort the request and dispatch a network error on resuming. |
| genericError(); |
| m_dispatchErrorOnResuming = true; |
| bool aborted = internalAbort(); |
| // It should not be possible to restart the load when aborting in suspend() because |
| // we are not allowed to execute in JS in suspend(). |
| ASSERT_UNUSED(aborted, aborted); |
| } |
| } |
| |
| void XMLHttpRequest::resume() |
| { |
| m_progressEventThrottle.resume(); |
| |
| // We are not allowed to execute arbitrary JS in resume() so dispatch |
| // the error event in a timer. |
| if (m_dispatchErrorOnResuming && !m_resumeTimer.isActive()) |
| m_resumeTimer.startOneShot(0_s); |
| } |
| |
| void XMLHttpRequest::resumeTimerFired() |
| { |
| ASSERT(m_dispatchErrorOnResuming); |
| m_dispatchErrorOnResuming = false; |
| dispatchErrorEvents(eventNames().errorEvent); |
| } |
| |
| void XMLHttpRequest::stop() |
| { |
| internalAbort(); |
| } |
| |
| void XMLHttpRequest::contextDestroyed() |
| { |
| ASSERT(!m_loader); |
| ActiveDOMObject::contextDestroyed(); |
| } |
| |
| void XMLHttpRequest::setMaximumIntervalForUserGestureForwarding(double interval) |
| { |
| m_maximumIntervalForUserGestureForwarding = Seconds(interval); |
| } |
| |
| } // namespace WebCore |
