| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "config.h" |
| #include "modules/beacon/NavigatorBeacon.h" |
| |
| #include "bindings/v8/ExceptionState.h" |
| #include "core/dom/ExceptionCode.h" |
| #include "core/dom/ExecutionContext.h" |
| #include "core/fileapi/Blob.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/frame/Settings.h" |
| #include "core/frame/csp/ContentSecurityPolicy.h" |
| #include "core/html/DOMFormData.h" |
| #include "core/loader/BeaconLoader.h" |
| #include "wtf/ArrayBufferView.h" |
| |
| namespace WebCore { |
| |
| NavigatorBeacon::NavigatorBeacon(Navigator& navigator) |
| : m_transmittedBytes(0) |
| , m_navigator(navigator) |
| { |
| } |
| |
| const char* NavigatorBeacon::supplementName() |
| { |
| return "NavigatorBeacon"; |
| } |
| |
| NavigatorBeacon& NavigatorBeacon::from(Navigator& navigator) |
| { |
| NavigatorBeacon* supplement = static_cast<NavigatorBeacon*>(WillBeHeapSupplement<Navigator>::from(navigator, supplementName())); |
| if (!supplement) { |
| supplement = new NavigatorBeacon(navigator); |
| provideTo(navigator, supplementName(), adoptPtrWillBeNoop(supplement)); |
| } |
| return *supplement; |
| } |
| |
| bool NavigatorBeacon::canSendBeacon(ExecutionContext* context, const KURL& url, ExceptionState& exceptionState) |
| { |
| if (!url.isValid()) { |
| exceptionState.throwDOMException(SyntaxError, "The URL argument is ill-formed or unsupported."); |
| return false; |
| } |
| // For now, only support HTTP and related. |
| if (!url.protocolIsInHTTPFamily()) { |
| exceptionState.throwDOMException(SyntaxError, "Beacons are only supported over HTTP(S)."); |
| return false; |
| } |
| // FIXME: CSP is not enforced on redirects, crbug.com/372197 |
| if (!ContentSecurityPolicy::shouldBypassMainWorld(context) && !context->contentSecurityPolicy()->allowConnectToSource(url)) { |
| // We can safely expose the URL to JavaScript, as these checks happen synchronously before redirection. JavaScript receives no new information. |
| exceptionState.throwSecurityError("Refused to send beacon to '" + url.elidedString() + "' because it violates the document's Content Security Policy."); |
| return false; |
| } |
| |
| // Do not allow sending Beacons over a Navigator that is detached. |
| if (!m_navigator.frame()) |
| return false; |
| |
| return true; |
| } |
| |
| int NavigatorBeacon::maxAllowance() const |
| { |
| const Settings* settings = m_navigator.frame()->settings(); |
| if (settings) { |
| int maxAllowed = settings->maxBeaconTransmission(); |
| if (maxAllowed < m_transmittedBytes) |
| return 0; |
| return maxAllowed - m_transmittedBytes; |
| } |
| return m_transmittedBytes; |
| } |
| |
| void NavigatorBeacon::updateTransmittedBytes(int length) |
| { |
| ASSERT(length >= 0); |
| m_transmittedBytes += length; |
| } |
| |
| bool NavigatorBeacon::sendBeacon(ExecutionContext* context, Navigator& navigator, const String& urlstring, const String& data, ExceptionState& exceptionState) |
| { |
| return NavigatorBeacon::from(navigator).sendBeacon(context, urlstring, data, exceptionState); |
| } |
| |
| bool NavigatorBeacon::sendBeacon(ExecutionContext* context, const String& urlstring, const String& data, ExceptionState& exceptionState) |
| { |
| KURL url = context->completeURL(urlstring); |
| if (!canSendBeacon(context, url, exceptionState)) |
| return false; |
| |
| int bytes = 0; |
| bool result = BeaconLoader::sendBeacon(m_navigator.frame(), maxAllowance(), url, data, bytes); |
| if (result) |
| updateTransmittedBytes(bytes); |
| |
| return result; |
| } |
| |
| bool NavigatorBeacon::sendBeacon(ExecutionContext* context, Navigator& navigator, const String& urlstring, PassRefPtr<ArrayBufferView> data, ExceptionState& exceptionState) |
| { |
| return NavigatorBeacon::from(navigator).sendBeacon(context, urlstring, data, exceptionState); |
| } |
| |
| bool NavigatorBeacon::sendBeacon(ExecutionContext* context, const String& urlstring, PassRefPtr<ArrayBufferView> data, ExceptionState& exceptionState) |
| { |
| KURL url = context->completeURL(urlstring); |
| if (!canSendBeacon(context, url, exceptionState)) |
| return false; |
| |
| int bytes = 0; |
| bool result = BeaconLoader::sendBeacon(m_navigator.frame(), maxAllowance(), url, data, bytes); |
| if (result) |
| updateTransmittedBytes(bytes); |
| |
| return result; |
| } |
| |
| bool NavigatorBeacon::sendBeacon(ExecutionContext* context, Navigator& navigator, const String& urlstring, PassRefPtrWillBeRawPtr<Blob> data, ExceptionState& exceptionState) |
| { |
| return NavigatorBeacon::from(navigator).sendBeacon(context, urlstring, data, exceptionState); |
| } |
| |
| bool NavigatorBeacon::sendBeacon(ExecutionContext* context, const String& urlstring, PassRefPtrWillBeRawPtr<Blob> data, ExceptionState& exceptionState) |
| { |
| KURL url = context->completeURL(urlstring); |
| if (!canSendBeacon(context, url, exceptionState)) |
| return false; |
| |
| int bytes = 0; |
| bool result = BeaconLoader::sendBeacon(m_navigator.frame(), maxAllowance(), url, data, bytes); |
| if (result) |
| updateTransmittedBytes(bytes); |
| |
| return result; |
| } |
| |
| bool NavigatorBeacon::sendBeacon(ExecutionContext* context, Navigator& navigator, const String& urlstring, PassRefPtrWillBeRawPtr<DOMFormData> data, ExceptionState& exceptionState) |
| { |
| return NavigatorBeacon::from(navigator).sendBeacon(context, urlstring, data, exceptionState); |
| } |
| |
| bool NavigatorBeacon::sendBeacon(ExecutionContext* context, const String& urlstring, PassRefPtrWillBeRawPtr<DOMFormData> data, ExceptionState& exceptionState) |
| { |
| KURL url = context->completeURL(urlstring); |
| if (!canSendBeacon(context, url, exceptionState)) |
| return false; |
| |
| int bytes = 0; |
| bool result = BeaconLoader::sendBeacon(m_navigator.frame(), maxAllowance(), url, data, bytes); |
| if (result) |
| updateTransmittedBytes(bytes); |
| |
| return result; |
| } |
| |
| } // namespace WebCore |