1/*
2 * Copyright (C) 2006, 2007 Apple 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 "ResourceResponse.h"
28
29#if USE(CFNETWORK)
30
31#include "HTTPParsers.h"
32#include "MIMETypeRegistry.h"
33#include <CFNetwork/CFURLResponsePriv.h>
34#include <wtf/RetainPtr.h>
35
36// We would like a better value for a maximum time_t,
37// but there is no way to do that in C with any certainty.
38// INT_MAX should work well enough for our purposes.
39#define MAX_TIME_T ((time_t)INT_MAX)
40
41namespace WebCore {
42
43static CFStringRef const commonHeaderFields[] = {
44    CFSTR("Age"), CFSTR("Cache-Control"), CFSTR("Content-Type"), CFSTR("Date"), CFSTR("Etag"), CFSTR("Expires"), CFSTR("Last-Modified"), CFSTR("Pragma")
45};
46static const int numCommonHeaderFields = sizeof(commonHeaderFields) / sizeof(CFStringRef);
47
48CFURLResponseRef ResourceResponse::cfURLResponse() const
49{
50    if (!m_cfResponse && !m_isNull) {
51        RetainPtr<CFURLRef> url = m_url.createCFURL();
52
53        // FIXME: This creates a very incomplete CFURLResponse, which does not even have a status code.
54
55        m_cfResponse = adoptCF(CFURLResponseCreate(0, url.get(), m_mimeType.string().createCFString().get(), m_expectedContentLength, m_textEncodingName.string().createCFString().get(), kCFURLCacheStorageAllowed));
56    }
57
58    return m_cfResponse.get();
59}
60
61void ResourceResponse::platformLazyInit(InitLevel initLevel)
62{
63    if (m_initLevel > initLevel)
64        return;
65
66    if (m_isNull || !m_cfResponse.get())
67        return;
68
69    if (m_initLevel < CommonFieldsOnly && initLevel >= CommonFieldsOnly) {
70        m_url = CFURLResponseGetURL(m_cfResponse.get());
71        m_mimeType = CFURLResponseGetMIMEType(m_cfResponse.get());
72        m_expectedContentLength = CFURLResponseGetExpectedContentLength(m_cfResponse.get());
73        m_textEncodingName = CFURLResponseGetTextEncodingName(m_cfResponse.get());
74
75        // Workaround for <rdar://problem/8757088>, can be removed once that is fixed.
76        unsigned textEncodingNameLength = m_textEncodingName.length();
77        if (textEncodingNameLength >= 2 && m_textEncodingName[0U] == '"' && m_textEncodingName[textEncodingNameLength - 1] == '"')
78            m_textEncodingName = m_textEncodingName.string().substring(1, textEncodingNameLength - 2);
79
80        CFHTTPMessageRef httpResponse = CFURLResponseGetHTTPResponse(m_cfResponse.get());
81        if (httpResponse) {
82            m_httpStatusCode = CFHTTPMessageGetResponseStatusCode(httpResponse);
83
84            RetainPtr<CFDictionaryRef> headers = adoptCF(CFHTTPMessageCopyAllHeaderFields(httpResponse));
85
86            for (int i = 0; i < numCommonHeaderFields; i++) {
87                CFStringRef value;
88                if (CFDictionaryGetValueIfPresent(headers.get(), commonHeaderFields[i], (const void **)&value))
89                    m_httpHeaderFields.set(commonHeaderFields[i], value);
90            }
91        } else
92            m_httpStatusCode = 0;
93    }
94
95    if (m_initLevel < CommonAndUncommonFields && initLevel >= CommonAndUncommonFields) {
96        CFHTTPMessageRef httpResponse = CFURLResponseGetHTTPResponse(m_cfResponse.get());
97        if (httpResponse) {
98            RetainPtr<CFStringRef> statusLine = adoptCF(CFHTTPMessageCopyResponseStatusLine(httpResponse));
99            m_httpStatusText = extractReasonPhraseFromHTTPStatusLine(statusLine.get());
100
101            RetainPtr<CFDictionaryRef> headers = adoptCF(CFHTTPMessageCopyAllHeaderFields(httpResponse));
102            CFIndex headerCount = CFDictionaryGetCount(headers.get());
103            Vector<const void*, 128> keys(headerCount);
104            Vector<const void*, 128> values(headerCount);
105            CFDictionaryGetKeysAndValues(headers.get(), keys.data(), values.data());
106            for (int i = 0; i < headerCount; ++i)
107                m_httpHeaderFields.set((CFStringRef)keys[i], (CFStringRef)values[i]);
108        }
109    }
110
111    if (m_initLevel < AllFields && initLevel >= AllFields) {
112        RetainPtr<CFStringRef> suggestedFilename = adoptCF(CFURLResponseCopySuggestedFilename(m_cfResponse.get()));
113        m_suggestedFilename = suggestedFilename.get();
114    }
115
116    m_initLevel = initLevel;
117}
118
119bool ResourceResponse::platformCompare(const ResourceResponse& a, const ResourceResponse& b)
120{
121    // CFEqual crashes if you pass it 0 so do an early check before calling it.
122    if (!a.cfURLResponse() || !b.cfURLResponse())
123        return a.cfURLResponse() == b.cfURLResponse();
124    return CFEqual(a.cfURLResponse(), b.cfURLResponse());
125}
126
127
128} // namespace WebCore
129
130#endif // USE(CFNETWORK)
131