XMLHttpRequest.cpp [plain text]
#include "config.h"
#include "XMLHttpRequest.h"
#include "Blob.h"
#include "BlobData.h"
#include "ContentSecurityPolicy.h"
#include "ContextFeatures.h"
#include "CrossOriginAccessControl.h"
#include "DOMFormData.h"
#include "DOMImplementation.h"
#include "Event.h"
#include "EventException.h"
#include "EventListener.h"
#include "EventNames.h"
#include "ExceptionCode.h"
#include "File.h"
#include "HTMLDocument.h"
#include "HTTPParsers.h"
#include "HistogramSupport.h"
#include "InspectorInstrumentation.h"
#include "JSDOMBinding.h"
#include "JSDOMWindow.h"
#include "MemoryCache.h"
#include "ParsedContentType.h"
#include "ResourceError.h"
#include "ResourceRequest.h"
#include "ScriptCallStack.h"
#include "ScriptController.h"
#include "ScriptProfile.h"
#include "Settings.h"
#include "SharedBuffer.h"
#include "TextResourceDecoder.h"
#include "ThreadableLoader.h"
#include "XMLHttpRequestException.h"
#include "XMLHttpRequestProgressEvent.h"
#include "XMLHttpRequestUpload.h"
#include "markup.h"
#include <heap/Strong.h>
#include <runtime/JSLock.h>
#include <runtime/Operations.h>
#include <wtf/ArrayBuffer.h>
#include <wtf/ArrayBufferView.h>
#include <wtf/RefCountedLeakCounter.h>
#include <wtf/StdLibExtras.h>
#include <wtf/text/CString.h>
#if ENABLE(RESOURCE_TIMING)
#include "CachedResourceRequestInitiators.h"
#endif
namespace WebCore {
DEFINE_DEBUG_ONLY_GLOBAL(WTF::RefCountedLeakCounter, xmlHttpRequestCounter, ("XMLHttpRequest"));
enum XMLHttpRequestSendArrayBufferOrView {
XMLHttpRequestSendArrayBuffer,
XMLHttpRequestSendArrayBufferView,
XMLHttpRequestSendArrayBufferOrViewMax,
};
struct XMLHttpRequestStaticData {
WTF_MAKE_NONCOPYABLE(XMLHttpRequestStaticData); WTF_MAKE_FAST_ALLOCATED;
public:
XMLHttpRequestStaticData();
String m_proxyHeaderPrefix;
String m_secHeaderPrefix;
HashSet<String, CaseFoldingHash> m_forbiddenRequestHeaders;
};
XMLHttpRequestStaticData::XMLHttpRequestStaticData()
: m_proxyHeaderPrefix("proxy-")
, m_secHeaderPrefix("sec-")
{
m_forbiddenRequestHeaders.add("accept-charset");
m_forbiddenRequestHeaders.add("accept-encoding");
m_forbiddenRequestHeaders.add("access-control-request-headers");
m_forbiddenRequestHeaders.add("access-control-request-method");
m_forbiddenRequestHeaders.add("connection");
m_forbiddenRequestHeaders.add("content-length");
m_forbiddenRequestHeaders.add("content-transfer-encoding");
m_forbiddenRequestHeaders.add("cookie");
m_forbiddenRequestHeaders.add("cookie2");
m_forbiddenRequestHeaders.add("date");
m_forbiddenRequestHeaders.add("expect");
m_forbiddenRequestHeaders.add("host");
m_forbiddenRequestHeaders.add("keep-alive");
m_forbiddenRequestHeaders.add("origin");
m_forbiddenRequestHeaders.add("referer");
m_forbiddenRequestHeaders.add("te");
m_forbiddenRequestHeaders.add("trailer");
m_forbiddenRequestHeaders.add("transfer-encoding");
m_forbiddenRequestHeaders.add("upgrade");
m_forbiddenRequestHeaders.add("user-agent");
m_forbiddenRequestHeaders.add("via");
}
static bool isSetCookieHeader(const AtomicString& name)
{
return equalIgnoringCase(name, "set-cookie") || equalIgnoringCase(name, "set-cookie2");
}
static void replaceCharsetInMediaType(String& mediaType, const String& charsetValue)
{
unsigned int pos = 0, len = 0;
findCharsetInMediaType(mediaType, pos, len);
if (!len) {
return;
}
while (len) {
mediaType.replace(pos, len, charsetValue);
unsigned int start = pos + charsetValue.length();
findCharsetInMediaType(mediaType, pos, len, start);
}
}
static const XMLHttpRequestStaticData* staticData = 0;
static const XMLHttpRequestStaticData* createXMLHttpRequestStaticData()
{
staticData = new XMLHttpRequestStaticData;
return staticData;
}
static const XMLHttpRequestStaticData* initializeXMLHttpRequestStaticData()
{
AtomicallyInitializedStatic(const XMLHttpRequestStaticData*, dummy = createXMLHttpRequestStaticData());
return dummy;
}
static void logConsoleError(ScriptExecutionContext* context, const String& message)
{
if (!context)
return;
context->addConsoleMessage(JSMessageSource, ErrorMessageLevel, message);
}
PassRefPtr<XMLHttpRequest> XMLHttpRequest::create(ScriptExecutionContext* context)
{
RefPtr<XMLHttpRequest> xmlHttpRequest(adoptRef(new XMLHttpRequest(context)));
xmlHttpRequest->suspendIfNeeded();
return xmlHttpRequest.release();
}
XMLHttpRequest::XMLHttpRequest(ScriptExecutionContext* context)
: ActiveDOMObject(context)
, m_async(true)
, m_includeCredentials(false)
#if ENABLE(XHR_TIMEOUT)
, m_timeoutMilliseconds(0)
#endif
, m_state(UNSENT)
, m_createdDocument(false)
, m_error(false)
, m_uploadEventsAllowed(true)
, m_uploadComplete(false)
, m_sameOriginRequest(true)
, m_receivedLength(0)
, m_lastSendLineNumber(0)
, m_exceptionCode(0)
, m_progressEventThrottle(this)
, m_responseTypeCode(ResponseTypeDefault)
{
initializeXMLHttpRequestStaticData();
#ifndef NDEBUG
xmlHttpRequestCounter.increment();
#endif
}
XMLHttpRequest::~XMLHttpRequest()
{
#ifndef NDEBUG
xmlHttpRequestCounter.decrement();
#endif
}
Document* XMLHttpRequest::document() const
{
ASSERT(scriptExecutionContext()->isDocument());
return static_cast<Document*>(scriptExecutionContext());
}
SecurityOrigin* XMLHttpRequest::securityOrigin() const
{
return scriptExecutionContext()->securityOrigin();
}
#if ENABLE(DASHBOARD_SUPPORT)
bool XMLHttpRequest::usesDashboardBackwardCompatibilityMode() const
{
if (scriptExecutionContext()->isWorkerContext())
return false;
Settings* settings = document()->settings();
return settings && settings->usesDashboardBackwardCompatibilityMode();
}
#endif
XMLHttpRequest::State XMLHttpRequest::readyState() const
{
return m_state;
}
String XMLHttpRequest::responseText(ExceptionCode& ec)
{
if (m_responseTypeCode != ResponseTypeDefault && m_responseTypeCode != ResponseTypeText) {
ec = INVALID_STATE_ERR;
return "";
}
return m_responseBuilder.toStringPreserveCapacity();
}
Document* XMLHttpRequest::responseXML(ExceptionCode& ec)
{
if (m_responseTypeCode != ResponseTypeDefault && m_responseTypeCode != ResponseTypeDocument) {
ec = INVALID_STATE_ERR;
return 0;
}
if (m_error || m_state != DONE)
return 0;
if (!m_createdDocument) {
bool isHTML = equalIgnoringCase(responseMIMEType(), "text/html");
if ((m_response.isHTTP() && !responseIsXML() && !isHTML)
|| (isHTML && m_responseTypeCode == ResponseTypeDefault)
|| scriptExecutionContext()->isWorkerContext()) {
m_responseDocument = 0;
} else {
if (isHTML)
m_responseDocument = HTMLDocument::create(0, m_url);
else
m_responseDocument = Document::create(0, m_url);
m_responseDocument->setContent(m_responseBuilder.toStringPreserveCapacity());
m_responseDocument->setSecurityOrigin(securityOrigin());
m_responseDocument->setContextFeatures(document()->contextFeatures());
if (!m_responseDocument->wellFormed())
m_responseDocument = 0;
}
m_createdDocument = true;
}
return m_responseDocument.get();
}
Blob* XMLHttpRequest::responseBlob(ExceptionCode& ec)
{
if (m_responseTypeCode != ResponseTypeBlob) {
ec = INVALID_STATE_ERR;
return 0;
}
if (m_state != DONE)
return 0;
if (!m_responseBlob) {
OwnPtr<BlobData> blobData = BlobData::create();
size_t size = 0;
if (m_binaryResponseBuilder) {
RefPtr<RawData> rawData = RawData::create();
size = m_binaryResponseBuilder->size();
rawData->mutableData()->append(m_binaryResponseBuilder->data(), size);
blobData->appendData(rawData, 0, BlobDataItem::toEndOfFile);
String normalizedContentType = Blob::normalizedContentType(responseMIMEType());
blobData->setContentType(normalizedContentType); m_binaryResponseBuilder.clear();
}
m_responseBlob = Blob::create(blobData.release(), size);
}
return m_responseBlob.get();
}
ArrayBuffer* XMLHttpRequest::responseArrayBuffer(ExceptionCode& ec)
{
if (m_responseTypeCode != ResponseTypeArrayBuffer) {
ec = INVALID_STATE_ERR;
return 0;
}
if (m_state != DONE)
return 0;
if (!m_responseArrayBuffer.get() && m_binaryResponseBuilder.get() && m_binaryResponseBuilder->size() > 0) {
m_responseArrayBuffer = ArrayBuffer::create(const_cast<char*>(m_binaryResponseBuilder->data()), static_cast<unsigned>(m_binaryResponseBuilder->size()));
m_binaryResponseBuilder.clear();
}
return m_responseArrayBuffer.get();
}
#if ENABLE(XHR_TIMEOUT)
void XMLHttpRequest::setTimeout(unsigned long timeout, ExceptionCode& ec)
{
if (scriptExecutionContext()->isDocument() && !m_async) {
logConsoleError(scriptExecutionContext(), "XMLHttpRequest.timeout cannot be set for synchronous HTTP(S) requests made from the window context.");
ec = INVALID_ACCESS_ERR;
return;
}
m_timeoutMilliseconds = timeout;
}
#endif
void XMLHttpRequest::setResponseType(const String& responseType, ExceptionCode& ec)
{
if (m_state >= LOADING) {
ec = INVALID_STATE_ERR;
return;
}
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.");
ec = INVALID_ACCESS_ERR;
return;
}
if (responseType == "")
m_responseTypeCode = ResponseTypeDefault;
else if (responseType == "text")
m_responseTypeCode = ResponseTypeText;
else if (responseType == "document")
m_responseTypeCode = ResponseTypeDocument;
else if (responseType == "blob")
m_responseTypeCode = ResponseTypeBlob;
else if (responseType == "arraybuffer")
m_responseTypeCode = ResponseTypeArrayBuffer;
else
ASSERT_NOT_REACHED();
}
String XMLHttpRequest::responseType()
{
switch (m_responseTypeCode) {
case ResponseTypeDefault:
return "";
case ResponseTypeText:
return "text";
case ResponseTypeDocument:
return "document";
case ResponseTypeBlob:
return "blob";
case ResponseTypeArrayBuffer:
return "arraybuffer";
}
return "";
}
XMLHttpRequestUpload* XMLHttpRequest::upload()
{
if (!m_upload)
m_upload = XMLHttpRequestUpload::create(this);
return m_upload.get();
}
void XMLHttpRequest::changeState(State newState)
{
if (m_state != newState) {
m_state = newState;
callReadyStateChangeListener();
}
}
void XMLHttpRequest::callReadyStateChangeListener()
{
if (!scriptExecutionContext())
return;
InspectorInstrumentationCookie cookie = InspectorInstrumentation::willDispatchXHRReadyStateChangeEvent(scriptExecutionContext(), this);
if (m_async || (m_state <= OPENED || m_state == DONE))
m_progressEventThrottle.dispatchReadyStateChangeEvent(XMLHttpRequestProgressEvent::create(eventNames().readystatechangeEvent), m_state == DONE ? FlushProgressEvent : DoNotFlushProgressEvent);
InspectorInstrumentation::didDispatchXHRReadyStateChangeEvent(cookie);
if (m_state == DONE && !m_error) {
InspectorInstrumentationCookie cookie = InspectorInstrumentation::willDispatchXHRLoadEvent(scriptExecutionContext(), this);
m_progressEventThrottle.dispatchEvent(XMLHttpRequestProgressEvent::create(eventNames().loadEvent));
InspectorInstrumentation::didDispatchXHRLoadEvent(cookie);
m_progressEventThrottle.dispatchEvent(XMLHttpRequestProgressEvent::create(eventNames().loadendEvent));
}
}
void XMLHttpRequest::setWithCredentials(bool value, ExceptionCode& ec)
{
if (m_state > OPENED || m_loader) {
ec = INVALID_STATE_ERR;
return;
}
m_includeCredentials = value;
}
bool XMLHttpRequest::isAllowedHTTPMethod(const String& method)
{
return !equalIgnoringCase(method, "TRACE")
&& !equalIgnoringCase(method, "TRACK")
&& !equalIgnoringCase(method, "CONNECT");
}
String XMLHttpRequest::uppercaseKnownHTTPMethod(const String& method)
{
if (equalIgnoringCase(method, "COPY") || equalIgnoringCase(method, "DELETE") || equalIgnoringCase(method, "GET")
|| equalIgnoringCase(method, "HEAD") || equalIgnoringCase(method, "INDEX") || equalIgnoringCase(method, "LOCK")
|| equalIgnoringCase(method, "M-POST") || equalIgnoringCase(method, "MKCOL") || equalIgnoringCase(method, "MOVE")
|| equalIgnoringCase(method, "OPTIONS") || equalIgnoringCase(method, "POST") || equalIgnoringCase(method, "PROPFIND")
|| equalIgnoringCase(method, "PROPPATCH") || equalIgnoringCase(method, "PUT") || equalIgnoringCase(method, "UNLOCK")) {
return method.upper();
}
return method;
}
bool XMLHttpRequest::isAllowedHTTPHeader(const String& name)
{
initializeXMLHttpRequestStaticData();
return !staticData->m_forbiddenRequestHeaders.contains(name) && !name.startsWith(staticData->m_proxyHeaderPrefix, false)
&& !name.startsWith(staticData->m_secHeaderPrefix, false);
}
void XMLHttpRequest::open(const String& method, const KURL& url, ExceptionCode& ec)
{
open(method, url, true, ec);
}
void XMLHttpRequest::open(const String& method, const KURL& url, bool async, ExceptionCode& ec)
{
internalAbort();
State previousState = m_state;
m_state = UNSENT;
m_error = false;
m_uploadComplete = false;
clearResponse();
clearRequest();
ASSERT(m_state == UNSENT);
if (!isValidHTTPToken(method)) {
ec = SYNTAX_ERR;
return;
}
if (!isAllowedHTTPMethod(method)) {
ec = SECURITY_ERR;
return;
}
bool shouldBypassMainWorldContentSecurityPolicy = false;
if (scriptExecutionContext()->isDocument()) {
Document* document = static_cast<Document*>(scriptExecutionContext());
if (document->frame())
shouldBypassMainWorldContentSecurityPolicy = document->frame()->script()->shouldBypassMainWorldContentSecurityPolicy();
}
if (!shouldBypassMainWorldContentSecurityPolicy && !scriptExecutionContext()->contentSecurityPolicy()->allowConnectToSource(url)) {
ec = SECURITY_ERR;
return;
}
if (!async && scriptExecutionContext()->isDocument()) {
if (document()->settings() && !document()->settings()->syncXHRInDocumentsEnabled()) {
logConsoleError(scriptExecutionContext(), "Synchronous XMLHttpRequests are disabled for this page.");
ec = INVALID_ACCESS_ERR;
return;
}
if (url.protocolIsInHTTPFamily() && m_responseTypeCode != ResponseTypeDefault) {
logConsoleError(scriptExecutionContext(), "Synchronous HTTP(S) requests made from the window context cannot have XMLHttpRequest.responseType set.");
ec = INVALID_ACCESS_ERR;
return;
}
#if ENABLE(XHR_TIMEOUT)
if (m_timeoutMilliseconds > 0) {
logConsoleError(scriptExecutionContext(), "Synchronous XMLHttpRequests must not have a timeout value set.");
ec = INVALID_ACCESS_ERR;
return;
}
#endif
}
m_method = uppercaseKnownHTTPMethod(method);
m_url = url;
m_async = async;
ASSERT(!m_loader);
if (previousState != OPENED)
changeState(OPENED);
else
m_state = OPENED;
}
void XMLHttpRequest::open(const String& method, const KURL& url, bool async, const String& user, ExceptionCode& ec)
{
KURL urlWithCredentials(url);
urlWithCredentials.setUser(user);
open(method, urlWithCredentials, async, ec);
}
void XMLHttpRequest::open(const String& method, const KURL& url, bool async, const String& user, const String& password, ExceptionCode& ec)
{
KURL urlWithCredentials(url);
urlWithCredentials.setUser(user);
urlWithCredentials.setPass(password);
open(method, urlWithCredentials, async, ec);
}
bool XMLHttpRequest::initSend(ExceptionCode& ec)
{
if (!scriptExecutionContext())
return false;
if (m_state != OPENED || m_loader) {
ec = INVALID_STATE_ERR;
return false;
}
m_error = false;
return true;
}
void XMLHttpRequest::send(ExceptionCode& ec)
{
send(String(), ec);
}
void XMLHttpRequest::send(Document* document, ExceptionCode& ec)
{
ASSERT(document);
if (!initSend(ec))
return;
if (m_method != "GET" && m_method != "HEAD" && m_url.protocolIsInHTTPFamily()) {
String contentType = getRequestHeader("Content-Type");
if (contentType.isEmpty()) {
#if ENABLE(DASHBOARD_SUPPORT)
if (usesDashboardBackwardCompatibilityMode())
setRequestHeaderInternal("Content-Type", "application/x-www-form-urlencoded");
else
#endif
setRequestHeaderInternal("Content-Type", "application/xml");
}
String body = createMarkup(document);
TextEncoding encoding = UTF8Encoding();
m_requestEntityBody = FormData::create(encoding.encode(body.characters(), body.length(), EntitiesForUnencodables));
if (m_upload)
m_requestEntityBody->setAlwaysStream(true);
}
createRequest(ec);
}
void XMLHttpRequest::send(const String& body, ExceptionCode& ec)
{
if (!initSend(ec))
return;
if (!body.isNull() && m_method != "GET" && m_method != "HEAD" && m_url.protocolIsInHTTPFamily()) {
String contentType = getRequestHeader("Content-Type");
if (contentType.isEmpty()) {
#if ENABLE(DASHBOARD_SUPPORT)
if (usesDashboardBackwardCompatibilityMode())
setRequestHeaderInternal("Content-Type", "application/x-www-form-urlencoded");
else
#endif
setRequestHeaderInternal("Content-Type", "application/xml");
} else {
replaceCharsetInMediaType(contentType, "UTF-8");
m_requestHeaders.set("Content-Type", contentType);
}
m_requestEntityBody = FormData::create(UTF8Encoding().encode(body.characters(), body.length(), EntitiesForUnencodables));
if (m_upload)
m_requestEntityBody->setAlwaysStream(true);
}
createRequest(ec);
}
void XMLHttpRequest::send(Blob* body, ExceptionCode& ec)
{
if (!initSend(ec))
return;
if (m_method != "GET" && m_method != "HEAD" && m_url.protocolIsInHTTPFamily()) {
const String& contentType = getRequestHeader("Content-Type");
if (contentType.isEmpty()) {
const String& blobType = body->type();
if (!blobType.isEmpty() && isValidContentType(blobType))
setRequestHeaderInternal("Content-Type", blobType);
else {
setRequestHeaderInternal("Content-Type", "");
}
}
m_requestEntityBody = FormData::create();
if (body->isFile())
m_requestEntityBody->appendFile(toFile(body)->path());
#if ENABLE(BLOB)
else
m_requestEntityBody->appendBlob(body->url());
#endif
}
createRequest(ec);
}
void XMLHttpRequest::send(DOMFormData* body, ExceptionCode& ec)
{
if (!initSend(ec))
return;
if (m_method != "GET" && m_method != "HEAD" && m_url.protocolIsInHTTPFamily()) {
m_requestEntityBody = FormData::createMultiPart(*(static_cast<FormDataList*>(body)), body->encoding(), document());
m_requestEntityBody->generateFiles(document());
String contentType = getRequestHeader("Content-Type");
if (contentType.isEmpty()) {
contentType = makeString("multipart/form-data; boundary=", m_requestEntityBody->boundary().data());
setRequestHeaderInternal("Content-Type", contentType);
}
}
createRequest(ec);
}
void XMLHttpRequest::send(ArrayBuffer* body, ExceptionCode& ec)
{
String consoleMessage("ArrayBuffer is deprecated in XMLHttpRequest.send(). Use ArrayBufferView instead.");
scriptExecutionContext()->addConsoleMessage(JSMessageSource, WarningMessageLevel, consoleMessage);
HistogramSupport::histogramEnumeration("WebCore.XHR.send.ArrayBufferOrView", XMLHttpRequestSendArrayBuffer, XMLHttpRequestSendArrayBufferOrViewMax);
sendBytesData(body->data(), body->byteLength(), ec);
}
void XMLHttpRequest::send(ArrayBufferView* body, ExceptionCode& ec)
{
HistogramSupport::histogramEnumeration("WebCore.XHR.send.ArrayBufferOrView", XMLHttpRequestSendArrayBufferView, XMLHttpRequestSendArrayBufferOrViewMax);
sendBytesData(body->baseAddress(), body->byteLength(), ec);
}
void XMLHttpRequest::sendBytesData(const void* data, size_t length, ExceptionCode& ec)
{
if (!initSend(ec))
return;
if (m_method != "GET" && m_method != "HEAD" && m_url.protocolIsInHTTPFamily()) {
m_requestEntityBody = FormData::create(data, length);
if (m_upload)
m_requestEntityBody->setAlwaysStream(true);
}
createRequest(ec);
}
void XMLHttpRequest::sendFromInspector(PassRefPtr<FormData> formData, ExceptionCode& ec)
{
m_requestEntityBody = formData ? formData->deepCopy() : 0;
createRequest(ec);
m_exceptionCode = ec;
}
void XMLHttpRequest::createRequest(ExceptionCode& ec)
{
#if ENABLE(BLOB)
if (m_url.protocolIs("blob") && m_method != "GET") {
ec = XMLHttpRequestException::NETWORK_ERR;
return;
}
#endif
bool uploadEvents = false;
if (m_async) {
m_progressEventThrottle.dispatchEvent(XMLHttpRequestProgressEvent::create(eventNames().loadstartEvent));
if (m_requestEntityBody && m_upload) {
uploadEvents = m_upload->hasEventListeners();
m_upload->dispatchEvent(XMLHttpRequestProgressEvent::create(eventNames().loadstartEvent));
}
}
m_sameOriginRequest = securityOrigin()->canRequest(m_url);
m_uploadEventsAllowed = m_sameOriginRequest || uploadEvents || !isSimpleCrossOriginAccessRequest(m_method, m_requestHeaders);
ResourceRequest request(m_url);
request.setHTTPMethod(m_method);
#if PLATFORM(BLACKBERRY)
request.setTargetType(ResourceRequest::TargetIsXHR);
#endif
InspectorInstrumentation::willLoadXHR(scriptExecutionContext(), this, m_method, m_url, m_async, m_requestEntityBody ? m_requestEntityBody->deepCopy() : 0, m_requestHeaders, m_includeCredentials);
if (m_requestEntityBody) {
ASSERT(m_method != "GET");
ASSERT(m_method != "HEAD");
request.setHTTPBody(m_requestEntityBody.release());
}
if (m_requestHeaders.size() > 0)
request.addHTTPHeaderFields(m_requestHeaders);
ThreadableLoaderOptions options;
options.sendLoadCallbacks = SendCallbacks;
options.sniffContent = DoNotSniffContent;
options.preflightPolicy = uploadEvents ? ForcePreflight : ConsiderPreflight;
options.allowCredentials = (m_sameOriginRequest || m_includeCredentials) ? AllowStoredCredentials : DoNotAllowStoredCredentials;
options.crossOriginRequestPolicy = UseAccessControl;
options.securityOrigin = securityOrigin();
#if ENABLE(RESOURCE_TIMING)
options.initiator = cachedResourceRequestInitiators().xmlhttprequest;
#endif
#if ENABLE(XHR_TIMEOUT)
if (m_timeoutMilliseconds)
request.setTimeoutInterval(m_timeoutMilliseconds / 1000.0);
#endif
m_exceptionCode = 0;
m_error = false;
if (m_async) {
if (m_upload)
request.setReportUploadProgress(true);
m_loader = ThreadableLoader::create(scriptExecutionContext(), this, request, options);
if (m_loader) {
setPendingActivity(this);
}
} else {
InspectorInstrumentation::willLoadXHRSynchronously(scriptExecutionContext());
ThreadableLoader::loadResourceSynchronously(scriptExecutionContext(), request, *this, options);
InspectorInstrumentation::didLoadXHRSynchronously(scriptExecutionContext());
}
if (!m_exceptionCode && m_error)
m_exceptionCode = XMLHttpRequestException::NETWORK_ERR;
ec = m_exceptionCode;
}
void XMLHttpRequest::abort()
{
RefPtr<XMLHttpRequest> protect(this);
bool sendFlag = m_loader;
internalAbort();
clearResponseBuffers();
m_requestHeaders.clear();
if ((m_state <= OPENED && !sendFlag) || m_state == DONE)
m_state = UNSENT;
else {
ASSERT(!m_loader);
changeState(DONE);
m_state = UNSENT;
}
m_progressEventThrottle.dispatchEventAndLoadEnd(XMLHttpRequestProgressEvent::create(eventNames().abortEvent));
if (!m_uploadComplete) {
m_uploadComplete = true;
if (m_upload && m_uploadEventsAllowed)
m_upload->dispatchEventAndLoadEnd(XMLHttpRequestProgressEvent::create(eventNames().abortEvent));
}
}
void XMLHttpRequest::internalAbort()
{
bool hadLoader = m_loader;
m_error = true;
m_receivedLength = 0;
if (hadLoader) {
m_loader->cancel();
m_loader = 0;
}
m_decoder = 0;
InspectorInstrumentation::didFailXHRLoading(scriptExecutionContext(), this);
if (hadLoader)
dropProtection();
}
void XMLHttpRequest::clearResponse()
{
m_response = ResourceResponse();
clearResponseBuffers();
}
void XMLHttpRequest::clearResponseBuffers()
{
m_responseBuilder.clear();
m_responseEncoding = String();
m_createdDocument = false;
m_responseDocument = 0;
m_responseBlob = 0;
m_binaryResponseBuilder.clear();
m_responseArrayBuffer.clear();
}
void XMLHttpRequest::clearRequest()
{
m_requestHeaders.clear();
m_requestEntityBody = 0;
}
void XMLHttpRequest::genericError()
{
clearResponse();
clearRequest();
m_error = true;
changeState(DONE);
}
void XMLHttpRequest::networkError()
{
genericError();
m_progressEventThrottle.dispatchEventAndLoadEnd(XMLHttpRequestProgressEvent::create(eventNames().errorEvent));
if (!m_uploadComplete) {
m_uploadComplete = true;
if (m_upload && m_uploadEventsAllowed)
m_upload->dispatchEventAndLoadEnd(XMLHttpRequestProgressEvent::create(eventNames().errorEvent));
}
internalAbort();
}
void XMLHttpRequest::abortError()
{
genericError();
m_progressEventThrottle.dispatchEventAndLoadEnd(XMLHttpRequestProgressEvent::create(eventNames().abortEvent));
if (!m_uploadComplete) {
m_uploadComplete = true;
if (m_upload && m_uploadEventsAllowed)
m_upload->dispatchEventAndLoadEnd(XMLHttpRequestProgressEvent::create(eventNames().abortEvent));
}
}
void XMLHttpRequest::dropProtection()
{
JSC::VM* vm = scriptExecutionContext()->vm();
JSC::JSLockHolder lock(vm);
vm->heap.reportExtraMemoryCost(m_responseBuilder.length() * 2);
unsetPendingActivity(this);
}
void XMLHttpRequest::overrideMimeType(const String& override)
{
m_mimeTypeOverride = override;
}
void XMLHttpRequest::setRequestHeader(const AtomicString& name, const String& value, ExceptionCode& ec)
{
if (m_state != OPENED || m_loader) {
#if ENABLE(DASHBOARD_SUPPORT)
if (usesDashboardBackwardCompatibilityMode())
return;
#endif
ec = INVALID_STATE_ERR;
return;
}
if (!isValidHTTPToken(name) || !isValidHTTPHeaderValue(value)) {
ec = SYNTAX_ERR;
return;
}
if (!securityOrigin()->canLoadLocalResources() && !isAllowedHTTPHeader(name)) {
logConsoleError(scriptExecutionContext(), "Refused to set unsafe header \"" + name + "\"");
return;
}
setRequestHeaderInternal(name, value);
}
void XMLHttpRequest::setRequestHeaderInternal(const AtomicString& name, const String& value)
{
HTTPHeaderMap::AddResult result = m_requestHeaders.add(name, value);
if (!result.isNewEntry)
result.iterator->value.append(", " + value);
}
String XMLHttpRequest::getRequestHeader(const AtomicString& name) const
{
return m_requestHeaders.get(name);
}
String XMLHttpRequest::getAllResponseHeaders(ExceptionCode& ec) const
{
if (m_state < HEADERS_RECEIVED) {
ec = INVALID_STATE_ERR;
return "";
}
StringBuilder stringBuilder;
HTTPHeaderSet accessControlExposeHeaderSet;
parseAccessControlExposeHeadersAllowList(m_response.httpHeaderField("Access-Control-Expose-Headers"), accessControlExposeHeaderSet);
HTTPHeaderMap::const_iterator end = m_response.httpHeaderFields().end();
for (HTTPHeaderMap::const_iterator it = m_response.httpHeaderFields().begin(); it!= end; ++it) {
if (isSetCookieHeader(it->key) && !securityOrigin()->canLoadLocalResources())
continue;
if (!m_sameOriginRequest && !isOnAccessControlResponseHeaderWhitelist(it->key) && !accessControlExposeHeaderSet.contains(it->key))
continue;
stringBuilder.append(it->key);
stringBuilder.append(':');
stringBuilder.append(' ');
stringBuilder.append(it->value);
stringBuilder.append('\r');
stringBuilder.append('\n');
}
return stringBuilder.toString();
}
String XMLHttpRequest::getResponseHeader(const AtomicString& name, ExceptionCode& ec) const
{
if (m_state < HEADERS_RECEIVED) {
ec = INVALID_STATE_ERR;
return String();
}
if (isSetCookieHeader(name) && !securityOrigin()->canLoadLocalResources()) {
logConsoleError(scriptExecutionContext(), "Refused to get unsafe header \"" + name + "\"");
return String();
}
HTTPHeaderSet accessControlExposeHeaderSet;
parseAccessControlExposeHeadersAllowList(m_response.httpHeaderField("Access-Control-Expose-Headers"), accessControlExposeHeaderSet);
if (!m_sameOriginRequest && !isOnAccessControlResponseHeaderWhitelist(name) && !accessControlExposeHeaderSet.contains(name)) {
logConsoleError(scriptExecutionContext(), "Refused to get unsafe header \"" + name + "\"");
return String();
}
return m_response.httpHeaderField(name);
}
String XMLHttpRequest::responseMIMEType() const
{
String mimeType = extractMIMETypeFromMediaType(m_mimeTypeOverride);
if (mimeType.isEmpty()) {
if (m_response.isHTTP())
mimeType = extractMIMETypeFromMediaType(m_response.httpHeaderField("Content-Type"));
else
mimeType = m_response.mimeType();
}
if (mimeType.isEmpty())
mimeType = "text/xml";
return mimeType;
}
bool XMLHttpRequest::responseIsXML() const
{
return DOMImplementation::isXMLMIMEType(responseMIMEType().lower());
}
int XMLHttpRequest::status(ExceptionCode& ec) const
{
if (m_response.httpStatusCode())
return m_response.httpStatusCode();
if (m_state == OPENED) {
ec = INVALID_STATE_ERR;
}
return 0;
}
String XMLHttpRequest::statusText(ExceptionCode& ec) const
{
if (!m_response.httpStatusText().isNull())
return m_response.httpStatusText();
if (m_state == OPENED) {
ec = INVALID_STATE_ERR;
}
return String();
}
void XMLHttpRequest::didFail(const ResourceError& error)
{
if (m_error)
return;
if (error.isCancellation()) {
m_exceptionCode = XMLHttpRequestException::ABORT_ERR;
abortError();
return;
}
#if ENABLE(XHR_TIMEOUT)
if (error.isTimeout()) {
didTimeout();
return;
}
#endif
if (error.domain() == errorDomainWebKitInternal)
logConsoleError(scriptExecutionContext(), "XMLHttpRequest cannot load " + error.failingURL() + ". " + error.localizedDescription());
m_exceptionCode = XMLHttpRequestException::NETWORK_ERR;
networkError();
}
void XMLHttpRequest::didFailRedirectCheck()
{
networkError();
}
void XMLHttpRequest::didFinishLoading(unsigned long identifier, double)
{
if (m_error)
return;
if (m_state < HEADERS_RECEIVED)
changeState(HEADERS_RECEIVED);
if (m_decoder)
m_responseBuilder.append(m_decoder->flush());
m_responseBuilder.shrinkToFit();
InspectorInstrumentation::didFinishXHRLoading(scriptExecutionContext(), this, identifier, m_responseBuilder.toStringPreserveCapacity(), m_url, m_lastSendURL, m_lastSendLineNumber);
bool hadLoader = m_loader;
m_loader = 0;
changeState(DONE);
m_responseEncoding = String();
m_decoder = 0;
if (hadLoader)
dropProtection();
}
void XMLHttpRequest::didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent)
{
if (!m_upload)
return;
if (m_uploadEventsAllowed)
m_upload->dispatchEvent(XMLHttpRequestProgressEvent::create(eventNames().progressEvent, true, bytesSent, totalBytesToBeSent));
if (bytesSent == totalBytesToBeSent && !m_uploadComplete) {
m_uploadComplete = true;
if (m_uploadEventsAllowed)
m_upload->dispatchEventAndLoadEnd(XMLHttpRequestProgressEvent::create(eventNames().loadEvent));
}
}
void XMLHttpRequest::didReceiveResponse(unsigned long identifier, const ResourceResponse& response)
{
InspectorInstrumentation::didReceiveXHRResponse(scriptExecutionContext(), identifier);
m_response = response;
if (!m_mimeTypeOverride.isEmpty()) {
m_response.setHTTPHeaderField("Content-Type", m_mimeTypeOverride);
m_responseEncoding = extractCharsetFromMediaType(m_mimeTypeOverride);
}
if (m_responseEncoding.isEmpty())
m_responseEncoding = response.textEncodingName();
}
void XMLHttpRequest::didReceiveData(const char* data, int len)
{
if (m_error)
return;
if (m_state < HEADERS_RECEIVED)
changeState(HEADERS_RECEIVED);
bool useDecoder = m_responseTypeCode == ResponseTypeDefault || m_responseTypeCode == ResponseTypeText || m_responseTypeCode == ResponseTypeDocument;
if (useDecoder && !m_decoder) {
if (!m_responseEncoding.isEmpty())
m_decoder = TextResourceDecoder::create("text/plain", m_responseEncoding);
else if (responseIsXML()) {
m_decoder = TextResourceDecoder::create("application/xml");
m_decoder->useLenientXMLDecoding();
} else if (equalIgnoringCase(responseMIMEType(), "text/html"))
m_decoder = TextResourceDecoder::create("text/html", "UTF-8");
else
m_decoder = TextResourceDecoder::create("text/plain", "UTF-8");
}
if (!len)
return;
if (len == -1)
len = strlen(data);
if (useDecoder)
m_responseBuilder.append(m_decoder->decode(data, len));
else if (m_responseTypeCode == ResponseTypeArrayBuffer || m_responseTypeCode == ResponseTypeBlob) {
if (!m_binaryResponseBuilder)
m_binaryResponseBuilder = SharedBuffer::create();
m_binaryResponseBuilder->append(data, len);
}
if (!m_error) {
long long expectedLength = m_response.expectedContentLength();
m_receivedLength += len;
if (m_async) {
bool lengthComputable = expectedLength > 0 && m_receivedLength <= expectedLength;
unsigned long long total = lengthComputable ? expectedLength : 0;
m_progressEventThrottle.dispatchProgressEvent(lengthComputable, m_receivedLength, total);
}
if (m_state != LOADING)
changeState(LOADING);
else
callReadyStateChangeListener();
}
}
#if ENABLE(XHR_TIMEOUT)
void XMLHttpRequest::didTimeout()
{
RefPtr<XMLHttpRequest> protect(this);
internalAbort();
clearResponse();
clearRequest();
m_error = true;
m_exceptionCode = XMLHttpRequestException::TIMEOUT_ERR;
if (!m_async) {
m_state = DONE;
m_exceptionCode = TIMEOUT_ERR;
return;
}
changeState(DONE);
if (!m_uploadComplete) {
m_uploadComplete = true;
if (m_upload && m_uploadEventsAllowed)
m_upload->dispatchEventAndLoadEnd(XMLHttpRequestProgressEvent::create(eventNames().timeoutEvent));
}
m_progressEventThrottle.dispatchEventAndLoadEnd(XMLHttpRequestProgressEvent::create(eventNames().timeoutEvent));
}
#endif
bool XMLHttpRequest::canSuspend() const
{
return !m_loader;
}
void XMLHttpRequest::suspend(ReasonForSuspension)
{
m_progressEventThrottle.suspend();
}
void XMLHttpRequest::resume()
{
m_progressEventThrottle.resume();
}
void XMLHttpRequest::stop()
{
internalAbort();
}
void XMLHttpRequest::contextDestroyed()
{
ASSERT(!m_loader);
ActiveDOMObject::contextDestroyed();
}
const AtomicString& XMLHttpRequest::interfaceName() const
{
return eventNames().interfaceForXMLHttpRequest;
}
ScriptExecutionContext* XMLHttpRequest::scriptExecutionContext() const
{
return ActiveDOMObject::scriptExecutionContext();
}
EventTargetData* XMLHttpRequest::eventTargetData()
{
return &m_eventTargetData;
}
EventTargetData* XMLHttpRequest::ensureEventTargetData()
{
return &m_eventTargetData;
}
}