1/*
2 * Copyright (C) 2010 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 */
31
32#include "config.h"
33#include "PingLoader.h"
34
35#include "Document.h"
36#include "FormData.h"
37#include "Frame.h"
38#include "FrameLoader.h"
39#include "FrameLoaderClient.h"
40#include "InspectorInstrumentation.h"
41#include "Page.h"
42#include "ProgressTracker.h"
43#include "ResourceHandle.h"
44#include "ResourceRequest.h"
45#include "ResourceResponse.h"
46#include "SecurityOrigin.h"
47#include "SecurityPolicy.h"
48#include <wtf/OwnPtr.h>
49#include <wtf/text/CString.h>
50
51namespace WebCore {
52
53void PingLoader::loadImage(Frame* frame, const KURL& url)
54{
55    if (!frame->document()->securityOrigin()->canDisplay(url)) {
56        FrameLoader::reportLocalLoadFailed(frame, url);
57        return;
58    }
59
60    ResourceRequest request(url);
61#if PLATFORM(BLACKBERRY)
62    request.setTargetType(ResourceRequest::TargetIsImage);
63#endif
64    request.setHTTPHeaderField("Cache-Control", "max-age=0");
65    String referrer = SecurityPolicy::generateReferrerHeader(frame->document()->referrerPolicy(), request.url(), frame->loader()->outgoingReferrer());
66    if (!referrer.isEmpty())
67        request.setHTTPReferrer(referrer);
68    frame->loader()->addExtraFieldsToSubresourceRequest(request);
69    OwnPtr<PingLoader> pingLoader = adoptPtr(new PingLoader(frame, request));
70
71    // Leak the ping loader, since it will kill itself as soon as it receives a response.
72    PingLoader* leakedPingLoader = pingLoader.leakPtr();
73    UNUSED_PARAM(leakedPingLoader);
74}
75
76// http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#hyperlink-auditing
77void PingLoader::sendPing(Frame* frame, const KURL& pingURL, const KURL& destinationURL)
78{
79    ResourceRequest request(pingURL);
80#if PLATFORM(BLACKBERRY)
81    request.setTargetType(ResourceRequest::TargetIsSubresource);
82#endif
83    request.setHTTPMethod("POST");
84    request.setHTTPContentType("text/ping");
85    request.setHTTPBody(FormData::create("PING"));
86    request.setHTTPHeaderField("Cache-Control", "max-age=0");
87    frame->loader()->addExtraFieldsToSubresourceRequest(request);
88
89    SecurityOrigin* sourceOrigin = frame->document()->securityOrigin();
90    RefPtr<SecurityOrigin> pingOrigin = SecurityOrigin::create(pingURL);
91    FrameLoader::addHTTPOriginIfNeeded(request, sourceOrigin->toString());
92    request.setHTTPHeaderField("Ping-To", destinationURL);
93    if (!SecurityPolicy::shouldHideReferrer(pingURL, frame->loader()->outgoingReferrer())) {
94      request.setHTTPHeaderField("Ping-From", frame->document()->url());
95      if (!sourceOrigin->isSameSchemeHostPort(pingOrigin.get())) {
96          String referrer = SecurityPolicy::generateReferrerHeader(frame->document()->referrerPolicy(), pingURL, frame->loader()->outgoingReferrer());
97          if (!referrer.isEmpty())
98              request.setHTTPReferrer(referrer);
99      }
100    }
101    OwnPtr<PingLoader> pingLoader = adoptPtr(new PingLoader(frame, request));
102
103    // Leak the ping loader, since it will kill itself as soon as it receives a response.
104    PingLoader* leakedPingLoader = pingLoader.leakPtr();
105    UNUSED_PARAM(leakedPingLoader);
106}
107
108void PingLoader::sendViolationReport(Frame* frame, const KURL& reportURL, PassRefPtr<FormData> report)
109{
110    ResourceRequest request(reportURL);
111#if PLATFORM(BLACKBERRY)
112    request.setTargetType(ResourceRequest::TargetIsSubresource);
113#endif
114    request.setHTTPMethod("POST");
115    request.setHTTPContentType("application/json");
116    request.setHTTPBody(report);
117    frame->loader()->addExtraFieldsToSubresourceRequest(request);
118
119    String referrer = SecurityPolicy::generateReferrerHeader(frame->document()->referrerPolicy(), reportURL, frame->loader()->outgoingReferrer());
120    if (!referrer.isEmpty())
121        request.setHTTPReferrer(referrer);
122    OwnPtr<PingLoader> pingLoader = adoptPtr(new PingLoader(frame, request));
123
124    // Leak the ping loader, since it will kill itself as soon as it receives a response.
125    PingLoader* leakedPingLoader = pingLoader.leakPtr();
126    UNUSED_PARAM(leakedPingLoader);
127}
128
129PingLoader::PingLoader(Frame* frame, ResourceRequest& request)
130    : m_timeout(this, &PingLoader::timeout)
131{
132    unsigned long identifier = frame->page()->progress()->createUniqueIdentifier();
133    // FIXME: Why activeDocumentLoader? I would have expected documentLoader().
134    // Itseems like the PingLoader should be associated with the current
135    // Document in the Frame, but the activeDocumentLoader will be associated
136    // with the provisional DocumentLoader if there is a provisional
137    // DocumentLoader.
138    m_shouldUseCredentialStorage = frame->loader()->client()->shouldUseCredentialStorage(frame->loader()->activeDocumentLoader(), identifier);
139    m_handle = ResourceHandle::create(frame->loader()->networkingContext(), request, this, false, false);
140
141    InspectorInstrumentation::continueAfterPingLoader(frame, identifier, frame->loader()->activeDocumentLoader(), request, ResourceResponse());
142
143    // If the server never responds, FrameLoader won't be able to cancel this load and
144    // we'll sit here waiting forever. Set a very generous timeout, just in case.
145    m_timeout.startOneShot(60000);
146}
147
148PingLoader::~PingLoader()
149{
150    if (m_handle)
151        m_handle->cancel();
152}
153
154}
155