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
40namespace blink {
41
42String MIMETypeRegistry::getMIMETypeForExtension(const String &ext)
43{
44    return blink::Platform::current()->mimeRegistry()->mimeTypeForExtension(ext);
45}
46
47String 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
53String 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
70bool MIMETypeRegistry::isSupportedImageMIMEType(const String& mimeType)
71{
72    return blink::Platform::current()->mimeRegistry()->supportsImageMIMEType(mimeType.lower())
73        != blink::WebMimeRegistry::IsNotSupported;
74}
75
76bool MIMETypeRegistry::isSupportedImageResourceMIMEType(const String& mimeType)
77{
78    return isSupportedImageMIMEType(mimeType);
79}
80
81bool MIMETypeRegistry::isSupportedImagePrefixedMIMEType(const String& mimeType)
82{
83    return blink::Platform::current()->mimeRegistry()->supportsImagePrefixedMIMEType(mimeType.lower())
84        != blink::WebMimeRegistry::IsNotSupported;
85}
86
87bool MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(const String& mimeType)
88{
89    if (equalIgnoringCase(mimeType, "image/jpeg") || equalIgnoringCase(mimeType, "image/png"))
90        return true;
91    if (equalIgnoringCase(mimeType, "image/webp"))
92        return true;
93    return false;
94}
95
96bool MIMETypeRegistry::isSupportedJavaScriptMIMEType(const String& mimeType)
97{
98    return blink::Platform::current()->mimeRegistry()->supportsJavaScriptMIMEType(mimeType.lower())
99        != blink::WebMimeRegistry::IsNotSupported;
100}
101
102bool MIMETypeRegistry::isSupportedNonImageMIMEType(const String& mimeType)
103{
104    return blink::Platform::current()->mimeRegistry()->supportsNonImageMIMEType(mimeType.lower())
105        != blink::WebMimeRegistry::IsNotSupported;
106}
107
108bool MIMETypeRegistry::isSupportedMediaSourceMIMEType(const String& mimeType, const String& codecs)
109{
110    return !mimeType.isEmpty()
111        && blink::Platform::current()->mimeRegistry()->supportsMediaSourceMIMEType(mimeType.lower(), codecs);
112}
113
114bool MIMETypeRegistry::isSupportedEncryptedMediaMIMEType(const String& keySystem, const String& mimeType, const String& codecs)
115{
116    // Key system names are case-sensitive!
117    return blink::Platform::current()->mimeRegistry()->supportsEncryptedMediaMIMEType(keySystem, mimeType.lower(), codecs);
118}
119
120bool MIMETypeRegistry::isJavaAppletMIMEType(const String& mimeType)
121{
122    // Since this set is very limited and is likely to remain so we won't bother with the overhead
123    // of using a hash set.
124    // Any of the MIME types below may be followed by any number of specific versions of the JVM,
125    // which is why we use startsWith()
126    return mimeType.startsWith("application/x-java-applet", false)
127        || mimeType.startsWith("application/x-java-bean", false)
128        || mimeType.startsWith("application/x-java-vm", false);
129}
130
131} // namespace blink
132