1/*
2 * Copyright (C) 2012 Google Inc. All rights reserved.
3 * Copyright (C) 2012 Intel Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 *     * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *     * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 *     * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include "config.h"
33#include "PerformanceResourceTiming.h"
34
35#if ENABLE(RESOURCE_TIMING)
36
37#include "Document.h"
38#include "DocumentLoadTiming.h"
39#include "DocumentLoader.h"
40#include "KURL.h"
41#include "ResourceRequest.h"
42#include "ResourceResponse.h"
43#include "SecurityOrigin.h"
44#include <wtf/Vector.h>
45
46namespace WebCore {
47
48static double monotonicTimeToDocumentMilliseconds(Document* document, double seconds)
49{
50    ASSERT(seconds >= 0.0);
51    return document->loader()->timing()->monotonicTimeToZeroBasedDocumentTime(seconds) * 1000.0;
52}
53
54static bool passesTimingAllowCheck(const ResourceResponse& response, Document* requestingDocument)
55{
56    AtomicallyInitializedStatic(AtomicString&, timingAllowOrigin = *new AtomicString("timing-allow-origin"));
57
58    RefPtr<SecurityOrigin> resourceOrigin = SecurityOrigin::create(response.url());
59    if (resourceOrigin->isSameSchemeHostPort(requestingDocument->securityOrigin()))
60        return true;
61
62    const String& timingAllowOriginString = response.httpHeaderField(timingAllowOrigin);
63    if (timingAllowOriginString.isEmpty() || equalIgnoringCase(timingAllowOriginString, "null"))
64        return false;
65
66    if (timingAllowOriginString == "*")
67        return true;
68
69    const String& securityOrigin = requestingDocument->securityOrigin()->toString();
70    Vector<String> timingAllowOrigins;
71    timingAllowOriginString.split(" ", timingAllowOrigins);
72    for (size_t i = 0; i < timingAllowOrigins.size(); ++i)
73        if (timingAllowOrigins[i] == securityOrigin)
74            return true;
75
76    return false;
77}
78
79PerformanceResourceTiming::PerformanceResourceTiming(const AtomicString& initiatorType, const ResourceRequest& request, const ResourceResponse& response, double initiationTime, double finishTime, Document* requestingDocument)
80    : PerformanceEntry(request.url().string(), "resource", monotonicTimeToDocumentMilliseconds(requestingDocument, initiationTime), monotonicTimeToDocumentMilliseconds(requestingDocument, finishTime))
81    , m_initiatorType(initiatorType)
82    , m_timing(response.resourceLoadTiming())
83    , m_finishTime(finishTime)
84    , m_didReuseConnection(response.connectionReused())
85    , m_shouldReportDetails(passesTimingAllowCheck(response, requestingDocument))
86    , m_requestingDocument(requestingDocument)
87{
88}
89
90PerformanceResourceTiming::~PerformanceResourceTiming()
91{
92}
93
94AtomicString PerformanceResourceTiming::initiatorType() const
95{
96    return m_initiatorType;
97}
98
99double PerformanceResourceTiming::redirectStart() const
100{
101    // FIXME: Need to track and report redirects for resources.
102    if (!m_shouldReportDetails)
103        return 0.0;
104    return 0;
105}
106
107double PerformanceResourceTiming::redirectEnd() const
108{
109    if (!m_shouldReportDetails)
110        return 0.0;
111    return 0;
112}
113
114double PerformanceResourceTiming::fetchStart() const
115{
116    // FIXME: This should be different depending on redirects.
117    return (startTime());
118}
119
120double PerformanceResourceTiming::domainLookupStart() const
121{
122    if (!m_shouldReportDetails)
123        return 0.0;
124
125    if (!m_timing || m_timing->dnsStart < 0)
126        return fetchStart();
127
128    return resourceTimeToDocumentMilliseconds(m_timing->dnsStart);
129}
130
131double PerformanceResourceTiming::domainLookupEnd() const
132{
133    if (!m_shouldReportDetails)
134        return 0.0;
135
136    if (!m_timing || m_timing->dnsEnd < 0)
137        return domainLookupStart();
138
139    return resourceTimeToDocumentMilliseconds(m_timing->dnsEnd);
140}
141
142double PerformanceResourceTiming::connectStart() const
143{
144    if (!m_shouldReportDetails)
145        return 0.0;
146
147    // connectStart will be -1 when a network request is not made.
148    if (!m_timing || m_timing->connectStart < 0 || m_didReuseConnection)
149        return domainLookupEnd();
150
151    // connectStart includes any DNS time, so we may need to trim that off.
152    int connectStart = m_timing->connectStart;
153    if (m_timing->dnsEnd >= 0)
154        connectStart = m_timing->dnsEnd;
155
156    return resourceTimeToDocumentMilliseconds(connectStart);
157}
158
159double PerformanceResourceTiming::connectEnd() const
160{
161    if (!m_shouldReportDetails)
162        return 0.0;
163
164    // connectStart will be -1 when a network request is not made.
165    if (!m_timing || m_timing->connectEnd < 0 || m_didReuseConnection)
166        return connectStart();
167
168    return resourceTimeToDocumentMilliseconds(m_timing->connectEnd);
169}
170
171double PerformanceResourceTiming::secureConnectionStart() const
172{
173    if (!m_shouldReportDetails)
174        return 0.0;
175
176    if (!m_timing || m_timing->sslStart < 0) // Secure connection not negotiated.
177        return 0.0;
178
179    return resourceTimeToDocumentMilliseconds(m_timing->sslStart);
180}
181
182double PerformanceResourceTiming::requestStart() const
183{
184    if (!m_shouldReportDetails)
185        return 0.0;
186
187    if (!m_timing)
188        return connectEnd();
189
190    return resourceTimeToDocumentMilliseconds(m_timing->sendStart);
191}
192
193double PerformanceResourceTiming::responseStart() const
194{
195    if (!m_shouldReportDetails)
196        return 0.0;
197
198    if (!m_timing)
199        return requestStart();
200    // FIXME: This number isn't exactly correct. See the notes in PerformanceTiming::responseStart().
201    return resourceTimeToDocumentMilliseconds(m_timing->receiveHeadersEnd);
202}
203
204double PerformanceResourceTiming::responseEnd() const
205{
206    if (!m_finishTime)
207        return responseStart();
208
209    return monotonicTimeToDocumentMilliseconds(m_requestingDocument.get(), m_finishTime);
210}
211
212double PerformanceResourceTiming::resourceTimeToDocumentMilliseconds(int deltaMilliseconds) const
213{
214    if (!deltaMilliseconds)
215        return 0.0;
216    return monotonicTimeToDocumentMilliseconds(m_requestingDocument.get(), m_timing->requestTime) + deltaMilliseconds;
217}
218
219} // namespace WebCore
220
221#endif // ENABLE(RESOURCE_TIMING)
222