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1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include "mojo/services/html_viewer/webmimeregistry_impl.h"
6 
7 #include "base/files/file_path.h"
8 #include "base/strings/string_util.h"
9 #include "base/strings/sys_string_conversions.h"
10 #include "base/strings/utf_string_conversions.h"
11 #include "net/base/mime_util.h"
12 #include "third_party/WebKit/public/platform/WebString.h"
13 
14 namespace mojo {
15 namespace {
16 
ToASCIIOrEmpty(const blink::WebString & string)17 std::string ToASCIIOrEmpty(const blink::WebString& string) {
18   return base::IsStringASCII(string) ? base::UTF16ToASCII(string)
19                                      : std::string();
20 }
21 
22 }  // namespace
23 
supportsMIMEType(const blink::WebString & mime_type)24 blink::WebMimeRegistry::SupportsType WebMimeRegistryImpl::supportsMIMEType(
25     const blink::WebString& mime_type) {
26   return net::IsSupportedMimeType(ToASCIIOrEmpty(mime_type)) ?
27       blink::WebMimeRegistry::IsSupported :
28       blink::WebMimeRegistry::IsNotSupported;
29 }
30 
supportsImageMIMEType(const blink::WebString & mime_type)31 blink::WebMimeRegistry::SupportsType WebMimeRegistryImpl::supportsImageMIMEType(
32     const blink::WebString& mime_type) {
33   return net::IsSupportedImageMimeType(ToASCIIOrEmpty(mime_type)) ?
34       blink::WebMimeRegistry::IsSupported :
35       blink::WebMimeRegistry::IsNotSupported;
36 }
37 
38 blink::WebMimeRegistry::SupportsType
supportsImagePrefixedMIMEType(const blink::WebString & mime_type)39 WebMimeRegistryImpl::supportsImagePrefixedMIMEType(
40     const blink::WebString& mime_type) {
41   std::string ascii_mime_type = ToASCIIOrEmpty(mime_type);
42   return (net::IsSupportedImageMimeType(ascii_mime_type) ||
43           (StartsWithASCII(ascii_mime_type, "image/", true) &&
44            net::IsSupportedNonImageMimeType(ascii_mime_type)))
45              ? WebMimeRegistry::IsSupported
46              : WebMimeRegistry::IsNotSupported;
47 }
48 
49 blink::WebMimeRegistry::SupportsType
supportsJavaScriptMIMEType(const blink::WebString & mime_type)50     WebMimeRegistryImpl::supportsJavaScriptMIMEType(
51     const blink::WebString& mime_type) {
52   return net::IsSupportedJavascriptMimeType(ToASCIIOrEmpty(mime_type)) ?
53       blink::WebMimeRegistry::IsSupported :
54       blink::WebMimeRegistry::IsNotSupported;
55 }
56 
supportsMediaMIMEType(const blink::WebString & mime_type,const blink::WebString & codecs,const blink::WebString & key_system)57 blink::WebMimeRegistry::SupportsType WebMimeRegistryImpl::supportsMediaMIMEType(
58     const blink::WebString& mime_type,
59     const blink::WebString& codecs,
60     const blink::WebString& key_system) {
61   const std::string mime_type_ascii = ToASCIIOrEmpty(mime_type);
62   // Not supporting the container is a flat-out no.
63   if (!net::IsSupportedMediaMimeType(mime_type_ascii))
64     return IsNotSupported;
65 
66   // Mojo does not currently support any key systems.
67   if (!key_system.isEmpty())
68     return IsNotSupported;
69 
70   // Check list of strict codecs to see if it is supported.
71   if (net::IsStrictMediaMimeType(mime_type_ascii)) {
72     // Check if the codecs are a perfect match.
73     std::vector<std::string> strict_codecs;
74     net::ParseCodecString(ToASCIIOrEmpty(codecs), &strict_codecs, false);
75     return static_cast<WebMimeRegistry::SupportsType>(
76         net::IsSupportedStrictMediaMimeType(mime_type_ascii, strict_codecs));
77   }
78 
79   // If we don't recognize the codec, it's possible we support it.
80   std::vector<std::string> parsed_codecs;
81   net::ParseCodecString(ToASCIIOrEmpty(codecs), &parsed_codecs, true);
82   if (!net::AreSupportedMediaCodecs(parsed_codecs))
83     return MayBeSupported;
84 
85   // Otherwise we have a perfect match.
86   return IsSupported;
87 }
88 
supportsMediaSourceMIMEType(const blink::WebString & mime_type,const blink::WebString & codecs)89 bool WebMimeRegistryImpl::supportsMediaSourceMIMEType(
90     const blink::WebString& mime_type,
91     const blink::WebString& codecs) {
92   NOTIMPLEMENTED();
93   return false;
94 }
95 
supportsEncryptedMediaMIMEType(const blink::WebString & key_system,const blink::WebString & mime_type,const blink::WebString & codecs)96 bool WebMimeRegistryImpl::supportsEncryptedMediaMIMEType(
97     const blink::WebString& key_system,
98     const blink::WebString& mime_type,
99     const blink::WebString& codecs) {
100   NOTIMPLEMENTED();
101   return false;
102 }
103 
104 blink::WebMimeRegistry::SupportsType
supportsNonImageMIMEType(const blink::WebString & mime_type)105     WebMimeRegistryImpl::supportsNonImageMIMEType(
106     const blink::WebString& mime_type) {
107   return net::IsSupportedNonImageMimeType(ToASCIIOrEmpty(mime_type)) ?
108       blink::WebMimeRegistry::IsSupported :
109       blink::WebMimeRegistry::IsNotSupported;
110 }
111 
mimeTypeForExtension(const blink::WebString & file_extension)112 blink::WebString WebMimeRegistryImpl::mimeTypeForExtension(
113     const blink::WebString& file_extension) {
114   NOTIMPLEMENTED();
115   return blink::WebString();
116 }
117 
wellKnownMimeTypeForExtension(const blink::WebString & file_extension)118 blink::WebString WebMimeRegistryImpl::wellKnownMimeTypeForExtension(
119     const blink::WebString& file_extension) {
120   NOTIMPLEMENTED();
121   return blink::WebString();
122 }
123 
mimeTypeFromFile(const blink::WebString & file_path)124 blink::WebString WebMimeRegistryImpl::mimeTypeFromFile(
125     const blink::WebString& file_path) {
126   NOTIMPLEMENTED();
127   return blink::WebString();
128 }
129 
130 }  // namespace mojo
131