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      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 COMPUTER, 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 COMPUTER, 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 #include "HTTPParsers.h"
     30 #include "MIMETypeRegistry.h"
     31 #include <CFNetwork/CFURLResponsePriv.h>
     32 #include <wtf/RetainPtr.h>
     33 
     34 using namespace std;
     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 
     41 namespace WebCore {
     42 
     43 CFURLResponseRef ResourceResponse::cfURLResponse() const
     44 {
     45     return m_cfResponse.get();
     46 }
     47 
     48 static inline bool filenameHasSaneExtension(const String& filename)
     49 {
     50     int dot = filename.find('.');
     51 
     52     // The dot can't be the first or last character in the filename.
     53     int length = filename.length();
     54     return dot > 0 && dot < length - 1;
     55 }
     56 
     57 static time_t toTimeT(CFAbsoluteTime time)
     58 {
     59     static const double maxTimeAsDouble = std::numeric_limits<time_t>::max();
     60     static const double minTimeAsDouble = std::numeric_limits<time_t>::min();
     61     return min(max(minTimeAsDouble, time + kCFAbsoluteTimeIntervalSince1970), maxTimeAsDouble);
     62 }
     63 
     64 void ResourceResponse::platformLazyInit()
     65 {
     66     if (m_isUpToDate)
     67         return;
     68     m_isUpToDate = true;
     69 
     70     if (m_isNull) {
     71         ASSERT(!m_cfResponse.get());
     72         return;
     73     }
     74 
     75     // FIXME: We may need to do MIME type sniffing here (unless that is done in CFURLResponseGetMIMEType).
     76 
     77     m_url = CFURLResponseGetURL(m_cfResponse.get());
     78     m_mimeType = CFURLResponseGetMIMEType(m_cfResponse.get());
     79     m_expectedContentLength = CFURLResponseGetExpectedContentLength(m_cfResponse.get());
     80     m_textEncodingName = CFURLResponseGetTextEncodingName(m_cfResponse.get());
     81 
     82     m_lastModifiedDate = toTimeT(CFURLResponseGetLastModifiedDate(m_cfResponse.get()));
     83 
     84     RetainPtr<CFStringRef> suggestedFilename(AdoptCF, CFURLResponseCopySuggestedFilename(m_cfResponse.get()));
     85     m_suggestedFilename = suggestedFilename.get();
     86 
     87     CFHTTPMessageRef httpResponse = CFURLResponseGetHTTPResponse(m_cfResponse.get());
     88     if (httpResponse) {
     89         m_httpStatusCode = CFHTTPMessageGetResponseStatusCode(httpResponse);
     90 
     91         RetainPtr<CFStringRef> statusLine(AdoptCF, CFHTTPMessageCopyResponseStatusLine(httpResponse));
     92         String statusText(statusLine.get());
     93         int spacePos = statusText.find(' ');
     94         // Remove the status code from the status text.
     95         spacePos = statusText.find(' ', spacePos + 1);
     96         statusText = statusText.substring(spacePos + 1);
     97 
     98         m_httpStatusText = statusText;
     99 
    100         RetainPtr<CFDictionaryRef> headers(AdoptCF, CFHTTPMessageCopyAllHeaderFields(httpResponse));
    101         CFIndex headerCount = CFDictionaryGetCount(headers.get());
    102         Vector<const void*, 128> keys(headerCount);
    103         Vector<const void*, 128> values(headerCount);
    104         CFDictionaryGetKeysAndValues(headers.get(), keys.data(), values.data());
    105         for (int i = 0; i < headerCount; ++i)
    106             m_httpHeaderFields.set((CFStringRef)keys[i], (CFStringRef)values[i]);
    107     } else
    108         m_httpStatusCode = 0;
    109 }
    110 
    111 bool ResourceResponse::platformCompare(const ResourceResponse& a, const ResourceResponse& b)
    112 {
    113     return CFEqual(a.cfURLResponse(), b.cfURLResponse());
    114 }
    115 
    116 
    117 }
    118