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      1 /*
      2  * Copyright (c) 2008, 2009, 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 #include "config.h"
     32 #include "platform/MIMETypeRegistry.h"
     33 
     34 #include "platform/plugins/PluginData.h"
     35 
     36 #include "public/platform/Platform.h"
     37 #include "public/platform/WebMimeRegistry.h"
     38 #include "wtf/text/CString.h"
     39 
     40 namespace WebCore {
     41 
     42 String MIMETypeRegistry::getMIMETypeForExtension(const String &ext)
     43 {
     44     return blink::Platform::current()->mimeRegistry()->mimeTypeForExtension(ext);
     45 }
     46 
     47 String MIMETypeRegistry::getWellKnownMIMETypeForExtension(const String &ext)
     48 {
     49     // This method must be thread safe and should not consult the OS/registry.
     50     return blink::Platform::current()->mimeRegistry()->wellKnownMimeTypeForExtension(ext);
     51 }
     52 
     53 String MIMETypeRegistry::getMIMETypeForPath(const String& path)
     54 {
     55     int pos = path.reverseFind('.');
     56     if (pos < 0)
     57         return "application/octet-stream";
     58     String extension = path.substring(pos + 1);
     59     String mimeType = getMIMETypeForExtension(extension);
     60     if (mimeType.isEmpty()) {
     61         // If there's no mimetype registered for the extension, check to see
     62         // if a plugin can handle the extension.
     63         mimeType = getPluginMimeTypeFromExtension(extension);
     64     }
     65     if (mimeType.isEmpty())
     66         return "application/octet-stream";
     67     return mimeType;
     68 }
     69 
     70 bool MIMETypeRegistry::isSupportedImageMIMEType(const String& mimeType)
     71 {
     72     return blink::Platform::current()->mimeRegistry()->supportsImageMIMEType(mimeType)
     73         != blink::WebMimeRegistry::IsNotSupported;
     74 }
     75 
     76 bool MIMETypeRegistry::isSupportedImageResourceMIMEType(const String& mimeType)
     77 {
     78     return isSupportedImageMIMEType(mimeType);
     79 }
     80 
     81 bool MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(const String& mimeType)
     82 {
     83     if (mimeType == "image/jpeg" || mimeType == "image/png")
     84         return true;
     85     if (mimeType == "image/webp")
     86         return true;
     87     return false;
     88 }
     89 
     90 bool MIMETypeRegistry::isSupportedJavaScriptMIMEType(const String& mimeType)
     91 {
     92     return blink::Platform::current()->mimeRegistry()->supportsJavaScriptMIMEType(mimeType)
     93         != blink::WebMimeRegistry::IsNotSupported;
     94 }
     95 
     96 bool MIMETypeRegistry::isSupportedNonImageMIMEType(const String& mimeType)
     97 {
     98     return blink::Platform::current()->mimeRegistry()->supportsNonImageMIMEType(mimeType)
     99         != blink::WebMimeRegistry::IsNotSupported;
    100 }
    101 
    102 bool MIMETypeRegistry::isSupportedMediaSourceMIMEType(const String& mimeType, const String& codecs)
    103 {
    104     return !mimeType.isEmpty()
    105         && blink::Platform::current()->mimeRegistry()->supportsMediaSourceMIMEType(mimeType, codecs);
    106 }
    107 
    108 bool MIMETypeRegistry::isJavaAppletMIMEType(const String& mimeType)
    109 {
    110     // Since this set is very limited and is likely to remain so we won't bother with the overhead
    111     // of using a hash set.
    112     // Any of the MIME types below may be followed by any number of specific versions of the JVM,
    113     // which is why we use startsWith()
    114     return mimeType.startsWith("application/x-java-applet", false)
    115         || mimeType.startsWith("application/x-java-bean", false)
    116         || mimeType.startsWith("application/x-java-vm", false);
    117 }
    118 
    119 } // namespace WebCore
    120