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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "config.h" |
| 6 #include "modules/beacon/NavigatorBeacon.h" |
| 7 |
| 8 #include "bindings/v8/ExceptionState.h" |
| 9 #include "core/dom/ExceptionCode.h" |
| 10 #include "core/dom/ExecutionContext.h" |
| 11 #include "core/fileapi/Blob.h" |
| 12 #include "core/frame/LocalFrame.h" |
| 13 #include "core/frame/Settings.h" |
| 14 #include "core/frame/csp/ContentSecurityPolicy.h" |
| 15 #include "core/html/DOMFormData.h" |
| 16 #include "core/loader/BeaconLoader.h" |
| 17 #include "wtf/ArrayBufferView.h" |
| 18 |
| 19 namespace WebCore { |
| 20 |
| 21 NavigatorBeacon::NavigatorBeacon(Navigator& navigator) |
| 22 : m_transmittedBytes(0) |
| 23 , m_navigator(navigator) |
| 24 { |
| 25 } |
| 26 |
| 27 const char* NavigatorBeacon::supplementName() |
| 28 { |
| 29 return "NavigatorBeacon"; |
| 30 } |
| 31 |
| 32 NavigatorBeacon& NavigatorBeacon::from(Navigator& navigator) |
| 33 { |
| 34 NavigatorBeacon* supplement = static_cast<NavigatorBeacon*>(WillBeHeapSupple
ment<Navigator>::from(navigator, supplementName())); |
| 35 if (!supplement) { |
| 36 supplement = new NavigatorBeacon(navigator); |
| 37 provideTo(navigator, supplementName(), adoptPtrWillBeNoop(supplement)); |
| 38 } |
| 39 return *supplement; |
| 40 } |
| 41 |
| 42 bool NavigatorBeacon::canSendBeacon(ExecutionContext* context, const KURL& url,
ExceptionState& exceptionState) |
| 43 { |
| 44 if (!url.isValid()) { |
| 45 exceptionState.throwDOMException(SyntaxError, "The URL argument is ill-f
ormed or unsupported."); |
| 46 return false; |
| 47 } |
| 48 // For now, only support HTTP and related. |
| 49 if (!url.protocolIsInHTTPFamily()) { |
| 50 exceptionState.throwDOMException(SyntaxError, "Beacons are only supporte
d over HTTP(S)."); |
| 51 return false; |
| 52 } |
| 53 // FIXME: CSP is not enforced on redirects, crbug.com/372197 |
| 54 if (!ContentSecurityPolicy::shouldBypassMainWorld(context) && !context->cont
entSecurityPolicy()->allowConnectToSource(url)) { |
| 55 // We can safely expose the URL to JavaScript, as these checks happen sy
nchronously before redirection. JavaScript receives no new information. |
| 56 exceptionState.throwSecurityError("Refused to send beacon to '" + url.el
idedString() + "' because it violates the document's Content Security Policy."); |
| 57 return false; |
| 58 } |
| 59 |
| 60 // Do not allow sending Beacons over a Navigator that is detached. |
| 61 if (!m_navigator.frame()) |
| 62 return false; |
| 63 |
| 64 return true; |
| 65 } |
| 66 |
| 67 int NavigatorBeacon::maxAllowance() const |
| 68 { |
| 69 const Settings* settings = m_navigator.frame()->settings(); |
| 70 if (settings) { |
| 71 int maxAllowed = settings->maxBeaconTransmission(); |
| 72 if (maxAllowed < m_transmittedBytes) |
| 73 return 0; |
| 74 return maxAllowed - m_transmittedBytes; |
| 75 } |
| 76 return m_transmittedBytes; |
| 77 } |
| 78 |
| 79 void NavigatorBeacon::updateTransmittedBytes(int length) |
| 80 { |
| 81 ASSERT(length >= 0); |
| 82 m_transmittedBytes += length; |
| 83 } |
| 84 |
| 85 bool NavigatorBeacon::sendBeacon(ExecutionContext* context, Navigator& navigator
, const String& urlstring, const String& data, ExceptionState& exceptionState) |
| 86 { |
| 87 return NavigatorBeacon::from(navigator).sendBeacon(context, urlstring, data,
exceptionState); |
| 88 } |
| 89 |
| 90 bool NavigatorBeacon::sendBeacon(ExecutionContext* context, const String& urlstr
ing, const String& data, ExceptionState& exceptionState) |
| 91 { |
| 92 KURL url = context->completeURL(urlstring); |
| 93 if (!canSendBeacon(context, url, exceptionState)) |
| 94 return false; |
| 95 |
| 96 int bytes = 0; |
| 97 bool result = BeaconLoader::sendBeacon(m_navigator.frame(), maxAllowance(),
url, data, bytes); |
| 98 if (result) |
| 99 updateTransmittedBytes(bytes); |
| 100 |
| 101 return result; |
| 102 } |
| 103 |
| 104 bool NavigatorBeacon::sendBeacon(ExecutionContext* context, Navigator& navigator
, const String& urlstring, PassRefPtr<ArrayBufferView> data, ExceptionState& exc
eptionState) |
| 105 { |
| 106 return NavigatorBeacon::from(navigator).sendBeacon(context, urlstring, data,
exceptionState); |
| 107 } |
| 108 |
| 109 bool NavigatorBeacon::sendBeacon(ExecutionContext* context, const String& urlstr
ing, PassRefPtr<ArrayBufferView> data, ExceptionState& exceptionState) |
| 110 { |
| 111 KURL url = context->completeURL(urlstring); |
| 112 if (!canSendBeacon(context, url, exceptionState)) |
| 113 return false; |
| 114 |
| 115 int bytes = 0; |
| 116 bool result = BeaconLoader::sendBeacon(m_navigator.frame(), maxAllowance(),
url, data, bytes); |
| 117 if (result) |
| 118 updateTransmittedBytes(bytes); |
| 119 |
| 120 return result; |
| 121 } |
| 122 |
| 123 bool NavigatorBeacon::sendBeacon(ExecutionContext* context, Navigator& navigator
, const String& urlstring, PassRefPtrWillBeRawPtr<Blob> data, ExceptionState& ex
ceptionState) |
| 124 { |
| 125 return NavigatorBeacon::from(navigator).sendBeacon(context, urlstring, data,
exceptionState); |
| 126 } |
| 127 |
| 128 bool NavigatorBeacon::sendBeacon(ExecutionContext* context, const String& urlstr
ing, PassRefPtrWillBeRawPtr<Blob> data, ExceptionState& exceptionState) |
| 129 { |
| 130 KURL url = context->completeURL(urlstring); |
| 131 if (!canSendBeacon(context, url, exceptionState)) |
| 132 return false; |
| 133 |
| 134 int bytes = 0; |
| 135 bool result = BeaconLoader::sendBeacon(m_navigator.frame(), maxAllowance(),
url, data, bytes); |
| 136 if (result) |
| 137 updateTransmittedBytes(bytes); |
| 138 |
| 139 return result; |
| 140 } |
| 141 |
| 142 bool NavigatorBeacon::sendBeacon(ExecutionContext* context, Navigator& navigator
, const String& urlstring, PassRefPtrWillBeRawPtr<DOMFormData> data, ExceptionSt
ate& exceptionState) |
| 143 { |
| 144 return NavigatorBeacon::from(navigator).sendBeacon(context, urlstring, data,
exceptionState); |
| 145 } |
| 146 |
| 147 bool NavigatorBeacon::sendBeacon(ExecutionContext* context, const String& urlstr
ing, PassRefPtrWillBeRawPtr<DOMFormData> data, ExceptionState& exceptionState) |
| 148 { |
| 149 KURL url = context->completeURL(urlstring); |
| 150 if (!canSendBeacon(context, url, exceptionState)) |
| 151 return false; |
| 152 |
| 153 int bytes = 0; |
| 154 bool result = BeaconLoader::sendBeacon(m_navigator.frame(), maxAllowance(),
url, data, bytes); |
| 155 if (result) |
| 156 updateTransmittedBytes(bytes); |
| 157 |
| 158 return result; |
| 159 } |
| 160 |
| 161 } // namespace WebCore |
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