1 /*
2 * Copyright (C) 2013 Google, Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "core/html/parser/XSSAuditorDelegate.h"
28
29 #include "core/dom/Document.h"
30 #include "core/frame/LocalFrame.h"
31 #include "core/inspector/ConsoleMessage.h"
32 #include "core/loader/DocumentLoader.h"
33 #include "core/loader/FrameLoader.h"
34 #include "core/loader/FrameLoaderClient.h"
35 #include "core/loader/PingLoader.h"
36 #include "platform/JSONValues.h"
37 #include "platform/network/FormData.h"
38 #include "platform/weborigin/SecurityOrigin.h"
39 #include "wtf/text/StringBuilder.h"
40
41 namespace blink {
42
buildConsoleError() const43 String XSSInfo::buildConsoleError() const
44 {
45 StringBuilder message;
46 message.appendLiteral("The XSS Auditor ");
47 message.append(m_didBlockEntirePage ? "blocked access to" : "refused to execute a script in");
48 message.appendLiteral(" '");
49 message.append(m_originalURL);
50 message.appendLiteral("' because ");
51 message.append(m_didBlockEntirePage ? "the source code of a script" : "its source code");
52 message.appendLiteral(" was found within the request.");
53
54 if (m_didSendCSPHeader)
55 message.appendLiteral(" The server sent a 'Content-Security-Policy' header requesting this behavior.");
56 else if (m_didSendXSSProtectionHeader)
57 message.appendLiteral(" The server sent an 'X-XSS-Protection' header requesting this behavior.");
58 else
59 message.appendLiteral(" The auditor was enabled as the server sent neither an 'X-XSS-Protection' nor 'Content-Security-Policy' header.");
60
61 return message.toString();
62 }
63
isSafeToSendToAnotherThread() const64 bool XSSInfo::isSafeToSendToAnotherThread() const
65 {
66 return m_originalURL.isSafeToSendToAnotherThread();
67 }
68
XSSAuditorDelegate(Document * document)69 XSSAuditorDelegate::XSSAuditorDelegate(Document* document)
70 : m_document(document)
71 , m_didSendNotifications(false)
72 {
73 ASSERT(isMainThread());
74 ASSERT(m_document);
75 }
76
trace(Visitor * visitor)77 void XSSAuditorDelegate::trace(Visitor* visitor)
78 {
79 visitor->trace(m_document);
80 }
81
generateViolationReport(const XSSInfo & xssInfo)82 PassRefPtr<FormData> XSSAuditorDelegate::generateViolationReport(const XSSInfo& xssInfo)
83 {
84 ASSERT(isMainThread());
85
86 FrameLoader& frameLoader = m_document->frame()->loader();
87 String httpBody;
88 if (frameLoader.documentLoader()) {
89 if (FormData* formData = frameLoader.documentLoader()->originalRequest().httpBody())
90 httpBody = formData->flattenToString();
91 }
92
93 RefPtr<JSONObject> reportDetails = JSONObject::create();
94 reportDetails->setString("request-url", xssInfo.m_originalURL);
95 reportDetails->setString("request-body", httpBody);
96
97 RefPtr<JSONObject> reportObject = JSONObject::create();
98 reportObject->setObject("xss-report", reportDetails.release());
99
100 return FormData::create(reportObject->toJSONString().utf8().data());
101 }
102
didBlockScript(const XSSInfo & xssInfo)103 void XSSAuditorDelegate::didBlockScript(const XSSInfo& xssInfo)
104 {
105 ASSERT(isMainThread());
106
107 m_document->addConsoleMessage(ConsoleMessage::create(JSMessageSource, ErrorMessageLevel, xssInfo.buildConsoleError()));
108
109 // stopAllLoaders can detach the LocalFrame, so protect it.
110 RefPtrWillBeRawPtr<LocalFrame> protect(m_document->frame());
111 FrameLoader& frameLoader = m_document->frame()->loader();
112 if (xssInfo.m_didBlockEntirePage)
113 frameLoader.stopAllLoaders();
114
115 if (!m_didSendNotifications) {
116 m_didSendNotifications = true;
117
118 frameLoader.client()->didDetectXSS(m_document->url(), xssInfo.m_didBlockEntirePage);
119
120 if (!m_reportURL.isEmpty())
121 PingLoader::sendViolationReport(m_document->frame(), m_reportURL, generateViolationReport(xssInfo), PingLoader::XSSAuditorViolationReport);
122 }
123
124 if (xssInfo.m_didBlockEntirePage)
125 m_document->frame()->navigationScheduler().schedulePageBlock(m_document, Referrer());
126 }
127
128 } // namespace blink
129