1 // Copyright (c) 2012 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.
10 #include "base/containers/hash_tables.h"
11 #include "base/lazy_instance.h"
12 #include "base/logging.h"
13 #include "base/stl_util.h"
14 #include "base/strings/string_number_conversions.h"
15 #include "base/strings/string_split.h"
16 #include "base/strings/string_util.h"
17 #include "base/strings/utf_string_conversions.h"
18 #include "net/base/mime_util.h"
19 #include "net/base/platform_mime_util.h"
20 #include "net/http/http_util.h"
22 #if defined(OS_ANDROID)
23 #include "base/android/build_info.h"
32 const char matcher[13];
35 static const MediaType kIanaMediaTypes[] = {
36 { "application", "application/" },
37 { "audio", "audio/" },
38 { "example", "example/" },
39 { "image", "image/" },
40 { "message", "message/" },
41 { "model", "model/" },
42 { "multipart", "multipart/" },
44 { "video", "video/" },
51 // Singleton utility class for mime types.
52 class MimeUtil : public PlatformMimeUtil {
73 bool GetMimeTypeFromExtension(const base::FilePath::StringType& ext,
74 std::string* mime_type) const;
76 bool GetMimeTypeFromFile(const base::FilePath& file_path,
77 std::string* mime_type) const;
79 bool GetWellKnownMimeTypeFromExtension(const base::FilePath::StringType& ext,
80 std::string* mime_type) const;
82 bool IsSupportedImageMimeType(const std::string& mime_type) const;
83 bool IsSupportedMediaMimeType(const std::string& mime_type) const;
84 bool IsSupportedNonImageMimeType(const std::string& mime_type) const;
85 bool IsUnsupportedTextMimeType(const std::string& mime_type) const;
86 bool IsSupportedJavascriptMimeType(const std::string& mime_type) const;
88 bool IsSupportedMimeType(const std::string& mime_type) const;
90 bool MatchesMimeType(const std::string &mime_type_pattern,
91 const std::string &mime_type) const;
93 bool ParseMimeTypeWithoutParameter(const std::string& type_string,
94 std::string* top_level_type,
95 std::string* subtype) const;
97 bool IsValidTopLevelMimeType(const std::string& type_string) const;
99 bool AreSupportedMediaCodecs(const std::vector<std::string>& codecs) const;
101 void ParseCodecString(const std::string& codecs,
102 std::vector<std::string>* codecs_out,
105 bool IsStrictMediaMimeType(const std::string& mime_type) const;
106 SupportsType IsSupportedStrictMediaMimeType(
107 const std::string& mime_type,
108 const std::vector<std::string>& codecs) const;
110 void RemoveProprietaryMediaTypesAndCodecsForTests();
113 friend struct base::DefaultLazyInstanceTraits<MimeUtil>;
115 typedef base::hash_set<std::string> MimeMappings;
117 typedef base::hash_set<int> CodecSet;
118 typedef std::map<std::string, CodecSet> StrictMappings;
120 CodecEntry() : codec(INVALID_CODEC), is_ambiguous(true) {}
121 CodecEntry(Codec c, bool ambiguous) : codec(c), is_ambiguous(ambiguous) {}
125 typedef std::map<std::string, CodecEntry> StringToCodecMappings;
129 // Returns IsSupported if all codec IDs in |codecs| are unambiguous
130 // and are supported by the platform. MayBeSupported is returned if
131 // at least one codec ID in |codecs| is ambiguous but all the codecs
132 // are supported by the platform. IsNotSupported is returned if at
133 // least one codec ID is not supported by the platform.
134 SupportsType AreSupportedCodecs(
135 const CodecSet& supported_codecs,
136 const std::vector<std::string>& codecs) const;
138 // For faster lookup, keep hash sets.
139 void InitializeMimeTypeMaps();
141 bool GetMimeTypeFromExtensionHelper(const base::FilePath::StringType& ext,
142 bool include_platform_types,
143 std::string* mime_type) const;
145 // Converts a codec ID into an Codec enum value and indicates
146 // whether the conversion was ambiguous.
147 // Returns true if this method was able to map |codec_id| to a specific
148 // Codec enum value. |codec| and |is_ambiguous| are only valid if true
149 // is returned. Otherwise their value is undefined after the call.
150 // |is_ambiguous| is true if |codec_id| did not have enough information to
151 // unambiguously determine the proper Codec enum value. If |is_ambiguous|
152 // is true |codec| contains the best guess for the intended Codec enum value.
153 bool StringToCodec(const std::string& codec_id,
155 bool* is_ambiguous) const;
157 // Returns true if |codec| is supported by the platform.
158 // Note: This method will return false if the platform supports proprietary
159 // codecs but |allow_proprietary_codecs_| is set to false.
160 bool IsCodecSupported(Codec codec) const;
162 // Returns true if |codec| refers to a proprietary codec.
163 bool IsCodecProprietary(Codec codec) const;
165 // Returns true and sets |*default_codec| if |mime_type| has a
166 // default codec associated with it.
167 // Returns false otherwise and the value of |*default_codec| is undefined.
168 bool GetDefaultCodec(const std::string& mime_type,
169 Codec* default_codec) const;
171 // Returns true if |mime_type| has a default codec associated with it
172 // and IsCodecSupported() returns true for that particular codec.
173 bool IsDefaultCodecSupported(const std::string& mime_type) const;
175 MimeMappings image_map_;
176 MimeMappings media_map_;
177 MimeMappings non_image_map_;
178 MimeMappings unsupported_text_map_;
179 MimeMappings javascript_map_;
181 // A map of mime_types and hash map of the supported codecs for the mime_type.
182 StrictMappings strict_format_map_;
184 // Keeps track of whether proprietary codec support should be
185 // advertised to callers.
186 bool allow_proprietary_codecs_;
188 // Lookup table for string compare based string -> Codec mappings.
189 StringToCodecMappings string_to_codec_map_;
192 // This variable is Leaky because we need to access it from WorkerPool threads.
193 static base::LazyInstance<MimeUtil>::Leaky g_mime_util =
194 LAZY_INSTANCE_INITIALIZER;
197 const char* mime_type;
198 const char* extensions; // comma separated list
201 static const MimeInfo primary_mappings[] = {
202 { "text/html", "html,htm,shtml,shtm" },
203 { "text/css", "css" },
204 { "text/xml", "xml" },
205 { "image/gif", "gif" },
206 { "image/jpeg", "jpeg,jpg" },
207 { "image/webp", "webp" },
208 { "image/png", "png" },
209 { "video/mp4", "mp4,m4v" },
210 { "audio/x-m4a", "m4a" },
211 { "audio/mp3", "mp3" },
212 { "video/ogg", "ogv,ogm" },
213 { "audio/ogg", "ogg,oga,opus" },
214 { "video/webm", "webm" },
215 { "audio/webm", "webm" },
216 { "audio/wav", "wav" },
217 { "application/xhtml+xml", "xhtml,xht,xhtm" },
218 { "application/x-chrome-extension", "crx" },
219 { "multipart/related", "mhtml,mht" }
222 static const MimeInfo secondary_mappings[] = {
223 { "application/octet-stream", "exe,com,bin" },
224 { "application/gzip", "gz" },
225 { "application/pdf", "pdf" },
226 { "application/postscript", "ps,eps,ai" },
227 { "application/javascript", "js" },
228 { "application/font-woff", "woff" },
229 { "image/bmp", "bmp" },
230 { "image/x-icon", "ico" },
231 { "image/vnd.microsoft.icon", "ico" },
232 { "image/jpeg", "jfif,pjpeg,pjp" },
233 { "image/tiff", "tiff,tif" },
234 { "image/x-xbitmap", "xbm" },
235 { "image/svg+xml", "svg,svgz" },
236 { "image/x-png", "png"},
237 { "message/rfc822", "eml" },
238 { "text/plain", "txt,text" },
239 { "text/html", "ehtml" },
240 { "application/rss+xml", "rss" },
241 { "application/rdf+xml", "rdf" },
242 { "text/xml", "xsl,xbl,xslt" },
243 { "application/vnd.mozilla.xul+xml", "xul" },
244 { "application/x-shockwave-flash", "swf,swl" },
245 { "application/pkcs7-mime", "p7m,p7c,p7z" },
246 { "application/pkcs7-signature", "p7s" }
249 static const char* FindMimeType(const MimeInfo* mappings,
252 size_t ext_len = strlen(ext);
254 for (size_t i = 0; i < mappings_len; ++i) {
255 const char* extensions = mappings[i].extensions;
257 size_t end_pos = strcspn(extensions, ",");
258 if (end_pos == ext_len &&
259 base::strncasecmp(extensions, ext, ext_len) == 0)
260 return mappings[i].mime_type;
261 extensions += end_pos;
264 extensions += 1; // skip over comma
270 bool MimeUtil::GetMimeTypeFromExtension(const base::FilePath::StringType& ext,
271 string* result) const {
272 return GetMimeTypeFromExtensionHelper(ext, true, result);
275 bool MimeUtil::GetWellKnownMimeTypeFromExtension(
276 const base::FilePath::StringType& ext,
277 string* result) const {
278 return GetMimeTypeFromExtensionHelper(ext, false, result);
281 bool MimeUtil::GetMimeTypeFromFile(const base::FilePath& file_path,
282 string* result) const {
283 base::FilePath::StringType file_name_str = file_path.Extension();
284 if (file_name_str.empty())
286 return GetMimeTypeFromExtension(file_name_str.substr(1), result);
289 bool MimeUtil::GetMimeTypeFromExtensionHelper(
290 const base::FilePath::StringType& ext,
291 bool include_platform_types,
292 string* result) const {
293 // Avoids crash when unable to handle a long file path. See crbug.com/48733.
294 const unsigned kMaxFilePathSize = 65536;
295 if (ext.length() > kMaxFilePathSize)
298 // We implement the same algorithm as Mozilla for mapping a file extension to
299 // a mime type. That is, we first check a hard-coded list (that cannot be
300 // overridden), and then if not found there, we defer to the system registry.
301 // Finally, we scan a secondary hard-coded list to catch types that we can
302 // deduce but that we also want to allow the OS to override.
304 base::FilePath path_ext(ext);
305 const string ext_narrow_str = path_ext.AsUTF8Unsafe();
306 const char* mime_type = FindMimeType(primary_mappings,
307 arraysize(primary_mappings),
308 ext_narrow_str.c_str());
314 if (include_platform_types && GetPlatformMimeTypeFromExtension(ext, result))
317 mime_type = FindMimeType(secondary_mappings, arraysize(secondary_mappings),
318 ext_narrow_str.c_str());
327 // From WebKit's WebCore/platform/MIMETypeRegistry.cpp:
329 static const char* const supported_image_types[] = {
337 "image/vnd.microsoft.icon", // ico
338 "image/x-icon", // ico
339 "image/x-xbitmap", // xbm
343 // A list of media types: http://en.wikipedia.org/wiki/Internet_media_type
344 // A comprehensive mime type list: http://plugindoc.mozdev.org/winmime.php
345 // This set of codecs is supported by all variations of Chromium.
346 static const char* const common_media_types[] = {
350 #if !defined(OS_ANDROID) // Android doesn't support Ogg Theora.
362 #if defined(OS_ANDROID)
363 // HLS. Supported by Android ICS and above.
364 "application/vnd.apple.mpegurl",
365 "application/x-mpegurl",
369 // List of proprietary types only supported by Google Chrome.
370 static const char* const proprietary_media_types[] = {
384 // - does not include javascript types list (see supported_javascript_types)
385 // - does not include types starting with "text/" (see
386 // IsSupportedNonImageMimeType())
387 static const char* const supported_non_image_types[] = {
388 "image/svg+xml", // SVG is text-based XML, even though it has an image/ type
390 "application/atom+xml",
391 "application/rss+xml",
392 "application/xhtml+xml",
394 "multipart/related", // For MHTML support.
395 "multipart/x-mixed-replace"
396 // Note: ADDING a new type here will probably render it AS HTML. This can
397 // result in cross site scripting.
400 // Dictionary of cryptographic file mime types.
401 struct CertificateMimeTypeInfo {
402 const char* mime_type;
403 CertificateMimeType cert_type;
406 static const CertificateMimeTypeInfo supported_certificate_types[] = {
407 { "application/x-x509-user-cert",
408 CERTIFICATE_MIME_TYPE_X509_USER_CERT },
409 #if defined(OS_ANDROID)
410 { "application/x-x509-ca-cert", CERTIFICATE_MIME_TYPE_X509_CA_CERT },
411 { "application/x-pkcs12", CERTIFICATE_MIME_TYPE_PKCS12_ARCHIVE },
415 // These types are excluded from the logic that allows all text/ types because
416 // while they are technically text, it's very unlikely that a user expects to
417 // see them rendered in text form.
418 static const char* const unsupported_text_types[] = {
432 "text/comma-separated-values",
434 "text/tab-separated-values",
436 "text/ofx", // http://crbug.com/162238
437 "text/vnd.sun.j2me.app-descriptor" // http://crbug.com/176450
440 // Mozilla 1.8 and WinIE 7 both accept text/javascript and text/ecmascript.
441 // Mozilla 1.8 accepts application/javascript, application/ecmascript, and
442 // application/x-javascript, but WinIE 7 doesn't.
443 // WinIE 7 accepts text/javascript1.1 - text/javascript1.3, text/jscript, and
444 // text/livescript, but Mozilla 1.8 doesn't.
445 // Mozilla 1.8 allows leading and trailing whitespace, but WinIE 7 doesn't.
446 // Mozilla 1.8 and WinIE 7 both accept the empty string, but neither accept a
447 // whitespace-only string.
448 // We want to accept all the values that either of these browsers accept, but
450 static const char* const supported_javascript_types[] = {
453 "application/javascript",
454 "application/ecmascript",
455 "application/x-javascript",
456 "text/javascript1.1",
457 "text/javascript1.2",
458 "text/javascript1.3",
463 #if defined(OS_ANDROID)
464 static bool IsCodecSupportedOnAndroid(MimeUtil::Codec codec) {
466 case MimeUtil::INVALID_CODEC:
471 case MimeUtil::MPEG4_AAC_LC:
472 case MimeUtil::MPEG4_AAC_SBRv1:
473 case MimeUtil::H264_BASELINE:
474 case MimeUtil::H264_MAIN:
475 case MimeUtil::H264_HIGH:
477 case MimeUtil::VORBIS:
480 case MimeUtil::MPEG2_AAC_LC:
481 case MimeUtil::MPEG2_AAC_MAIN:
482 case MimeUtil::MPEG2_AAC_SSR:
483 // MPEG-2 variants of AAC are not supported on Android.
487 // VP9 is supported only in KitKat+ (API Level 19).
488 return base::android::BuildInfo::GetInstance()->sdk_int() >= 19;
491 // TODO(vigneshv): Change this similar to the VP9 check once Opus is
492 // supported on Android (http://crbug.com/318436).
495 case MimeUtil::THEORA:
502 static bool IsMimeTypeSupportedOnAndroid(const std::string& mimeType) {
503 // HLS codecs are supported in ICS and above (API level 14)
504 if ((!mimeType.compare("application/vnd.apple.mpegurl") ||
505 !mimeType.compare("application/x-mpegurl")) &&
506 base::android::BuildInfo::GetInstance()->sdk_int() < 14) {
513 struct MediaFormatStrict {
514 const char* mime_type;
515 const char* codecs_list;
518 // Following is the list of RFC 6381 compliant codecs:
519 // mp4a.66 - MPEG-2 AAC MAIN
520 // mp4a.67 - MPEG-2 AAC LC
521 // mp4a.68 - MPEG-2 AAC SSR
522 // mp4a.69 - MPEG-2 extension to MPEG-1
523 // mp4a.6B - MPEG-1 audio
524 // mp4a.40.2 - MPEG-4 AAC LC
525 // mp4a.40.5 - MPEG-4 AAC SBRv1
527 // avc1.42E0xx - H.264 Baseline
528 // avc1.4D40xx - H.264 Main
529 // avc1.6400xx - H.264 High
530 static const char kMP4AudioCodecsExpression[] =
531 "mp4a.66,mp4a.67,mp4a.68,mp4a.69,mp4a.6B,mp4a.40.2,mp4a.40.5";
532 static const char kMP4VideoCodecsExpression[] =
533 "avc1.42E00A,avc1.4D400A,avc1.64000A," \
534 "mp4a.66,mp4a.67,mp4a.68,mp4a.69,mp4a.6B,mp4a.40.2,mp4a.40.5";
536 static const MediaFormatStrict format_codec_mappings[] = {
537 { "video/webm", "opus,vorbis,vp8,vp8.0,vp9,vp9.0" },
538 { "audio/webm", "opus,vorbis" },
539 { "audio/wav", "1" },
540 { "audio/x-wav", "1" },
541 { "video/ogg", "opus,theora,vorbis" },
542 { "audio/ogg", "opus,vorbis" },
543 { "application/ogg", "opus,theora,vorbis" },
544 { "audio/mpeg", "mp3" },
546 { "audio/x-mp3", "" },
547 { "audio/mp4", kMP4AudioCodecsExpression },
548 { "audio/x-m4a", kMP4AudioCodecsExpression },
549 { "video/mp4", kMP4VideoCodecsExpression },
550 { "video/x-m4v", kMP4VideoCodecsExpression },
551 { "application/x-mpegurl", kMP4VideoCodecsExpression },
552 { "application/vnd.apple.mpegurl", kMP4VideoCodecsExpression }
555 struct CodecIDMappings {
556 const char* const codec_id;
557 MimeUtil::Codec codec;
560 // List of codec IDs that provide enough information to determine the
561 // codec and profile being requested.
563 // The "mp4a" strings come from RFC 6381.
564 static const CodecIDMappings kUnambiguousCodecIDs[] = {
565 { "1", MimeUtil::PCM }, // We only allow this for WAV so it isn't ambiguous.
566 { "mp3", MimeUtil::MP3 },
567 { "mp4a.66", MimeUtil::MPEG2_AAC_MAIN },
568 { "mp4a.67", MimeUtil::MPEG2_AAC_LC },
569 { "mp4a.68", MimeUtil::MPEG2_AAC_SSR },
570 { "mp4a.69", MimeUtil::MP3 },
571 { "mp4a.6B", MimeUtil::MP3 },
572 { "mp4a.40.2", MimeUtil::MPEG4_AAC_LC },
573 { "mp4a.40.5", MimeUtil::MPEG4_AAC_SBRv1 },
574 { "vorbis", MimeUtil::VORBIS },
575 { "opus", MimeUtil::OPUS },
576 { "vp8", MimeUtil::VP8 },
577 { "vp8.0", MimeUtil::VP8 },
578 { "vp9", MimeUtil::VP9 },
579 { "vp9.0", MimeUtil::VP9 },
580 { "theora", MimeUtil::THEORA }
583 // List of codec IDs that are ambiguous and don't provide
584 // enough information to determine the codec and profile.
585 // The codec in these entries indicate the codec and profile
586 // we assume the user is trying to indicate.
587 static const CodecIDMappings kAmbiguousCodecIDs[] = {
588 { "mp4a.40", MimeUtil::MPEG4_AAC_LC },
589 { "avc1", MimeUtil::H264_BASELINE },
590 { "avc3", MimeUtil::H264_BASELINE },
593 MimeUtil::MimeUtil() : allow_proprietary_codecs_(false) {
594 InitializeMimeTypeMaps();
597 SupportsType MimeUtil::AreSupportedCodecs(
598 const CodecSet& supported_codecs,
599 const std::vector<std::string>& codecs) const {
600 DCHECK(!supported_codecs.empty());
601 DCHECK(!codecs.empty());
603 SupportsType result = IsSupported;
604 for (size_t i = 0; i < codecs.size(); ++i) {
605 bool is_ambiguous = true;
606 Codec codec = INVALID_CODEC;
607 if (!StringToCodec(codecs[i], &codec, &is_ambiguous))
608 return IsNotSupported;
610 if (!IsCodecSupported(codec) ||
611 supported_codecs.find(codec) == supported_codecs.end()) {
612 return IsNotSupported;
616 result = MayBeSupported;
622 void MimeUtil::InitializeMimeTypeMaps() {
623 for (size_t i = 0; i < arraysize(supported_image_types); ++i)
624 image_map_.insert(supported_image_types[i]);
626 // Initialize the supported non-image types.
627 for (size_t i = 0; i < arraysize(supported_non_image_types); ++i)
628 non_image_map_.insert(supported_non_image_types[i]);
629 for (size_t i = 0; i < arraysize(supported_certificate_types); ++i)
630 non_image_map_.insert(supported_certificate_types[i].mime_type);
631 for (size_t i = 0; i < arraysize(unsupported_text_types); ++i)
632 unsupported_text_map_.insert(unsupported_text_types[i]);
633 for (size_t i = 0; i < arraysize(supported_javascript_types); ++i)
634 non_image_map_.insert(supported_javascript_types[i]);
635 for (size_t i = 0; i < arraysize(common_media_types); ++i) {
636 #if defined(OS_ANDROID)
637 if (!IsMimeTypeSupportedOnAndroid(common_media_types[i]))
640 non_image_map_.insert(common_media_types[i]);
642 #if defined(USE_PROPRIETARY_CODECS)
643 allow_proprietary_codecs_ = true;
645 for (size_t i = 0; i < arraysize(proprietary_media_types); ++i)
646 non_image_map_.insert(proprietary_media_types[i]);
649 // Initialize the supported media types.
650 for (size_t i = 0; i < arraysize(common_media_types); ++i) {
651 #if defined(OS_ANDROID)
652 if (!IsMimeTypeSupportedOnAndroid(common_media_types[i]))
655 media_map_.insert(common_media_types[i]);
657 #if defined(USE_PROPRIETARY_CODECS)
658 for (size_t i = 0; i < arraysize(proprietary_media_types); ++i)
659 media_map_.insert(proprietary_media_types[i]);
662 for (size_t i = 0; i < arraysize(supported_javascript_types); ++i)
663 javascript_map_.insert(supported_javascript_types[i]);
665 for (size_t i = 0; i < arraysize(kUnambiguousCodecIDs); ++i) {
666 string_to_codec_map_[kUnambiguousCodecIDs[i].codec_id] =
667 CodecEntry(kUnambiguousCodecIDs[i].codec, false);
670 for (size_t i = 0; i < arraysize(kAmbiguousCodecIDs); ++i) {
671 string_to_codec_map_[kAmbiguousCodecIDs[i].codec_id] =
672 CodecEntry(kAmbiguousCodecIDs[i].codec, true);
675 // Initialize the strict supported media types.
676 for (size_t i = 0; i < arraysize(format_codec_mappings); ++i) {
677 std::vector<std::string> mime_type_codecs;
678 ParseCodecString(format_codec_mappings[i].codecs_list,
683 for (size_t j = 0; j < mime_type_codecs.size(); ++j) {
684 Codec codec = INVALID_CODEC;
685 bool is_ambiguous = true;
686 CHECK(StringToCodec(mime_type_codecs[j], &codec, &is_ambiguous));
687 DCHECK(!is_ambiguous);
688 codecs.insert(codec);
691 strict_format_map_[format_codec_mappings[i].mime_type] = codecs;
695 bool MimeUtil::IsSupportedImageMimeType(const std::string& mime_type) const {
696 return image_map_.find(mime_type) != image_map_.end();
699 bool MimeUtil::IsSupportedMediaMimeType(const std::string& mime_type) const {
700 return media_map_.find(mime_type) != media_map_.end();
703 bool MimeUtil::IsSupportedNonImageMimeType(const std::string& mime_type) const {
704 return non_image_map_.find(mime_type) != non_image_map_.end() ||
705 (mime_type.compare(0, 5, "text/") == 0 &&
706 !IsUnsupportedTextMimeType(mime_type)) ||
707 (mime_type.compare(0, 12, "application/") == 0 &&
708 MatchesMimeType("application/*+json", mime_type));
711 bool MimeUtil::IsUnsupportedTextMimeType(const std::string& mime_type) const {
712 return unsupported_text_map_.find(mime_type) != unsupported_text_map_.end();
715 bool MimeUtil::IsSupportedJavascriptMimeType(
716 const std::string& mime_type) const {
717 return javascript_map_.find(mime_type) != javascript_map_.end();
720 // Mirrors WebViewImpl::CanShowMIMEType()
721 bool MimeUtil::IsSupportedMimeType(const std::string& mime_type) const {
722 return (mime_type.compare(0, 6, "image/") == 0 &&
723 IsSupportedImageMimeType(mime_type)) ||
724 IsSupportedNonImageMimeType(mime_type);
727 // Tests for MIME parameter equality. Each parameter in the |mime_type_pattern|
728 // must be matched by a parameter in the |mime_type|. If there are no
729 // parameters in the pattern, the match is a success.
730 bool MatchesMimeTypeParameters(const std::string& mime_type_pattern,
731 const std::string& mime_type) {
732 const std::string::size_type semicolon = mime_type_pattern.find(';');
733 const std::string::size_type test_semicolon = mime_type.find(';');
734 if (semicolon != std::string::npos) {
735 if (test_semicolon == std::string::npos)
738 std::vector<std::string> pattern_parameters;
739 base::SplitString(mime_type_pattern.substr(semicolon + 1),
740 ';', &pattern_parameters);
742 std::vector<std::string> test_parameters;
743 base::SplitString(mime_type.substr(test_semicolon + 1),
744 ';', &test_parameters);
746 sort(pattern_parameters.begin(), pattern_parameters.end());
747 sort(test_parameters.begin(), test_parameters.end());
748 std::vector<std::string> difference =
749 base::STLSetDifference<std::vector<std::string> >(pattern_parameters,
751 return difference.size() == 0;
756 // This comparison handles absolute maching and also basic
757 // wildcards. The plugin mime types could be:
762 // Also tests mime parameters -- all parameters in the pattern must be present
763 // in the tested type for a match to succeed.
764 bool MimeUtil::MatchesMimeType(const std::string& mime_type_pattern,
765 const std::string& mime_type) const {
766 // Verify caller is passing lowercase strings.
767 DCHECK_EQ(base::StringToLowerASCII(mime_type_pattern), mime_type_pattern);
768 DCHECK_EQ(base::StringToLowerASCII(mime_type), mime_type);
770 if (mime_type_pattern.empty())
773 std::string::size_type semicolon = mime_type_pattern.find(';');
774 const std::string base_pattern(mime_type_pattern.substr(0, semicolon));
775 semicolon = mime_type.find(';');
776 const std::string base_type(mime_type.substr(0, semicolon));
778 if (base_pattern == "*" || base_pattern == "*/*")
779 return MatchesMimeTypeParameters(mime_type_pattern, mime_type);
781 const std::string::size_type star = base_pattern.find('*');
782 if (star == std::string::npos) {
783 if (base_pattern == base_type)
784 return MatchesMimeTypeParameters(mime_type_pattern, mime_type);
789 // Test length to prevent overlap between |left| and |right|.
790 if (base_type.length() < base_pattern.length() - 1)
793 const std::string left(base_pattern.substr(0, star));
794 const std::string right(base_pattern.substr(star + 1));
796 if (base_type.find(left) != 0)
799 if (!right.empty() &&
800 base_type.rfind(right) != base_type.length() - right.length())
803 return MatchesMimeTypeParameters(mime_type_pattern, mime_type);
806 // See http://www.iana.org/assignments/media-types/media-types.xhtml
807 static const char* legal_top_level_types[] = {
819 bool MimeUtil::ParseMimeTypeWithoutParameter(
820 const std::string& type_string,
821 std::string* top_level_type,
822 std::string* subtype) const {
823 std::vector<std::string> components;
824 base::SplitString(type_string, '/', &components);
825 if (components.size() != 2 ||
826 !HttpUtil::IsToken(components[0]) ||
827 !HttpUtil::IsToken(components[1]))
831 *top_level_type = components[0];
833 *subtype = components[1];
837 bool MimeUtil::IsValidTopLevelMimeType(const std::string& type_string) const {
838 std::string lower_type = base::StringToLowerASCII(type_string);
839 for (size_t i = 0; i < arraysize(legal_top_level_types); ++i) {
840 if (lower_type.compare(legal_top_level_types[i]) == 0)
844 return type_string.size() > 2 && StartsWithASCII(type_string, "x-", false);
847 bool MimeUtil::AreSupportedMediaCodecs(
848 const std::vector<std::string>& codecs) const {
849 for (size_t i = 0; i < codecs.size(); ++i) {
850 Codec codec = INVALID_CODEC;
851 bool is_ambiguous = true;
852 if (!StringToCodec(codecs[i], &codec, &is_ambiguous) ||
853 !IsCodecSupported(codec)) {
860 void MimeUtil::ParseCodecString(const std::string& codecs,
861 std::vector<std::string>* codecs_out,
863 std::string no_quote_codecs;
864 base::TrimString(codecs, "\"", &no_quote_codecs);
865 base::SplitString(no_quote_codecs, ',', codecs_out);
870 // Strip everything past the first '.'
871 for (std::vector<std::string>::iterator it = codecs_out->begin();
872 it != codecs_out->end();
874 size_t found = it->find_first_of('.');
875 if (found != std::string::npos)
880 bool MimeUtil::IsStrictMediaMimeType(const std::string& mime_type) const {
881 return strict_format_map_.find(mime_type) != strict_format_map_.end();
884 SupportsType MimeUtil::IsSupportedStrictMediaMimeType(
885 const std::string& mime_type,
886 const std::vector<std::string>& codecs) const {
887 StrictMappings::const_iterator it_strict_map =
888 strict_format_map_.find(mime_type);
889 if (it_strict_map == strict_format_map_.end())
890 return codecs.empty() ? MayBeSupported : IsNotSupported;
892 if (it_strict_map->second.empty()) {
893 // We get here if the mimetype does not expect a codecs parameter.
894 return (codecs.empty() && IsDefaultCodecSupported(mime_type)) ?
895 IsSupported : IsNotSupported;
898 if (codecs.empty()) {
899 // We get here if the mimetype expects to get a codecs parameter,
900 // but didn't get one. If |mime_type| does not have a default codec
901 // the best we can do is say "maybe" because we don't have enough
903 Codec default_codec = INVALID_CODEC;
904 if (!GetDefaultCodec(mime_type, &default_codec))
905 return MayBeSupported;
907 return IsCodecSupported(default_codec) ? IsSupported : IsNotSupported;
910 return AreSupportedCodecs(it_strict_map->second, codecs);
913 void MimeUtil::RemoveProprietaryMediaTypesAndCodecsForTests() {
914 for (size_t i = 0; i < arraysize(proprietary_media_types); ++i) {
915 non_image_map_.erase(proprietary_media_types[i]);
916 media_map_.erase(proprietary_media_types[i]);
918 allow_proprietary_codecs_ = false;
921 static bool IsValidH264Level(const std::string& level_str) {
923 if (level_str.size() != 2 || !base::HexStringToUInt(level_str, &level))
926 // Valid levels taken from Table A-1 in ISO-14496-10.
927 // Essentially |level_str| is toHex(10 * level).
928 return ((level >= 10 && level <= 13) ||
929 (level >= 20 && level <= 22) ||
930 (level >= 30 && level <= 32) ||
931 (level >= 40 && level <= 42) ||
932 (level >= 50 && level <= 51));
935 // Handle parsing H.264 codec IDs as outlined in RFC 6381
936 // avc1.42E0xx - H.264 Baseline
937 // avc1.4D40xx - H.264 Main
938 // avc1.6400xx - H.264 High
940 // avc1.xxxxxx & avc3.xxxxxx are considered ambiguous forms that
941 // are trying to signal H.264 Baseline.
942 static bool ParseH264CodecID(const std::string& codec_id,
943 MimeUtil::Codec* codec,
944 bool* is_ambiguous) {
945 // Make sure we have avc1.xxxxxx or avc3.xxxxxx
946 if (codec_id.size() != 11 ||
947 (!StartsWithASCII(codec_id, "avc1.", true) &&
948 !StartsWithASCII(codec_id, "avc3.", true))) {
952 std::string profile = StringToUpperASCII(codec_id.substr(5, 4));
953 if (profile == "42E0") {
954 *codec = MimeUtil::H264_BASELINE;
955 } else if (profile == "4D40") {
956 *codec = MimeUtil::H264_MAIN;
957 } else if (profile == "6400") {
958 *codec = MimeUtil::H264_HIGH;
960 *codec = MimeUtil::H264_BASELINE;
961 *is_ambiguous = true;
965 *is_ambiguous = !IsValidH264Level(StringToUpperASCII(codec_id.substr(9)));
969 bool MimeUtil::StringToCodec(const std::string& codec_id,
971 bool* is_ambiguous) const {
972 StringToCodecMappings::const_iterator itr =
973 string_to_codec_map_.find(codec_id);
974 if (itr != string_to_codec_map_.end()) {
975 *codec = itr->second.codec;
976 *is_ambiguous = itr->second.is_ambiguous;
980 // If |codec_id| is not in |string_to_codec_map_|, then we assume that it is
981 // an H.264 codec ID because currently those are the only ones that can't be
982 // stored in the |string_to_codec_map_| and require parsing.
983 return ParseH264CodecID(codec_id, codec, is_ambiguous);
986 bool MimeUtil::IsCodecSupported(Codec codec) const {
987 DCHECK_NE(codec, INVALID_CODEC);
989 #if defined(OS_ANDROID)
990 if (!IsCodecSupportedOnAndroid(codec))
994 return allow_proprietary_codecs_ || !IsCodecProprietary(codec);
997 bool MimeUtil::IsCodecProprietary(Codec codec) const {
1002 case MPEG2_AAC_MAIN:
1005 case MPEG4_AAC_SBRv1:
1023 bool MimeUtil::GetDefaultCodec(const std::string& mime_type,
1024 Codec* default_codec) const {
1025 if (mime_type == "audio/mpeg" ||
1026 mime_type == "audio/mp3" ||
1027 mime_type == "audio/x-mp3") {
1028 *default_codec = MimeUtil::MP3;
1036 bool MimeUtil::IsDefaultCodecSupported(const std::string& mime_type) const {
1037 Codec default_codec = Codec::INVALID_CODEC;
1038 if (!GetDefaultCodec(mime_type, &default_codec))
1040 return IsCodecSupported(default_codec);
1043 //----------------------------------------------------------------------------
1044 // Wrappers for the singleton
1045 //----------------------------------------------------------------------------
1047 bool GetMimeTypeFromExtension(const base::FilePath::StringType& ext,
1048 std::string* mime_type) {
1049 return g_mime_util.Get().GetMimeTypeFromExtension(ext, mime_type);
1052 bool GetMimeTypeFromFile(const base::FilePath& file_path,
1053 std::string* mime_type) {
1054 return g_mime_util.Get().GetMimeTypeFromFile(file_path, mime_type);
1057 bool GetWellKnownMimeTypeFromExtension(const base::FilePath::StringType& ext,
1058 std::string* mime_type) {
1059 return g_mime_util.Get().GetWellKnownMimeTypeFromExtension(ext, mime_type);
1062 bool GetPreferredExtensionForMimeType(const std::string& mime_type,
1063 base::FilePath::StringType* extension) {
1064 return g_mime_util.Get().GetPreferredExtensionForMimeType(mime_type,
1068 bool IsSupportedImageMimeType(const std::string& mime_type) {
1069 return g_mime_util.Get().IsSupportedImageMimeType(mime_type);
1072 bool IsSupportedMediaMimeType(const std::string& mime_type) {
1073 return g_mime_util.Get().IsSupportedMediaMimeType(mime_type);
1076 bool IsSupportedNonImageMimeType(const std::string& mime_type) {
1077 return g_mime_util.Get().IsSupportedNonImageMimeType(mime_type);
1080 bool IsUnsupportedTextMimeType(const std::string& mime_type) {
1081 return g_mime_util.Get().IsUnsupportedTextMimeType(mime_type);
1084 bool IsSupportedJavascriptMimeType(const std::string& mime_type) {
1085 return g_mime_util.Get().IsSupportedJavascriptMimeType(mime_type);
1088 bool IsSupportedMimeType(const std::string& mime_type) {
1089 return g_mime_util.Get().IsSupportedMimeType(mime_type);
1092 bool MatchesMimeType(const std::string& mime_type_pattern,
1093 const std::string& mime_type) {
1094 return g_mime_util.Get().MatchesMimeType(mime_type_pattern, mime_type);
1097 bool ParseMimeTypeWithoutParameter(const std::string& type_string,
1098 std::string* top_level_type,
1099 std::string* subtype) {
1100 return g_mime_util.Get().ParseMimeTypeWithoutParameter(
1101 type_string, top_level_type, subtype);
1104 bool IsValidTopLevelMimeType(const std::string& type_string) {
1105 return g_mime_util.Get().IsValidTopLevelMimeType(type_string);
1108 bool AreSupportedMediaCodecs(const std::vector<std::string>& codecs) {
1109 return g_mime_util.Get().AreSupportedMediaCodecs(codecs);
1112 bool IsStrictMediaMimeType(const std::string& mime_type) {
1113 return g_mime_util.Get().IsStrictMediaMimeType(mime_type);
1116 SupportsType IsSupportedStrictMediaMimeType(
1117 const std::string& mime_type,
1118 const std::vector<std::string>& codecs) {
1119 return g_mime_util.Get().IsSupportedStrictMediaMimeType(mime_type, codecs);
1122 void ParseCodecString(const std::string& codecs,
1123 std::vector<std::string>* codecs_out,
1125 g_mime_util.Get().ParseCodecString(codecs, codecs_out, strip);
1130 // From http://www.w3schools.com/media/media_mimeref.asp and
1131 // http://plugindoc.mozdev.org/winmime.php
1132 static const char* const kStandardImageTypes[] = {
1144 "image/vnd.microsoft.icon",
1145 "image/x-cmu-raster",
1148 "image/x-portable-anymap",
1149 "image/x-portable-bitmap",
1150 "image/x-portable-graymap",
1151 "image/x-portable-pixmap",
1155 "image/x-xwindowdump"
1157 static const char* const kStandardAudioTypes[] = {
1173 "audio/vnd.rn-realaudio",
1176 static const char* const kStandardVideoTypes[] = {
1193 struct StandardType {
1194 const char* leading_mime_type;
1195 const char* const* standard_types;
1196 size_t standard_types_len;
1198 static const StandardType kStandardTypes[] = {
1199 { "image/", kStandardImageTypes, arraysize(kStandardImageTypes) },
1200 { "audio/", kStandardAudioTypes, arraysize(kStandardAudioTypes) },
1201 { "video/", kStandardVideoTypes, arraysize(kStandardVideoTypes) },
1205 void GetExtensionsFromHardCodedMappings(
1206 const MimeInfo* mappings,
1207 size_t mappings_len,
1208 const std::string& leading_mime_type,
1209 base::hash_set<base::FilePath::StringType>* extensions) {
1210 base::FilePath::StringType extension;
1211 for (size_t i = 0; i < mappings_len; ++i) {
1212 if (StartsWithASCII(mappings[i].mime_type, leading_mime_type, false)) {
1213 std::vector<string> this_extensions;
1214 base::SplitString(mappings[i].extensions, ',', &this_extensions);
1215 for (size_t j = 0; j < this_extensions.size(); ++j) {
1217 base::FilePath::StringType extension(
1218 base::UTF8ToWide(this_extensions[j]));
1220 base::FilePath::StringType extension(this_extensions[j]);
1222 extensions->insert(extension);
1228 void GetExtensionsHelper(
1229 const char* const* standard_types,
1230 size_t standard_types_len,
1231 const std::string& leading_mime_type,
1232 base::hash_set<base::FilePath::StringType>* extensions) {
1233 for (size_t i = 0; i < standard_types_len; ++i) {
1234 g_mime_util.Get().GetPlatformExtensionsForMimeType(standard_types[i],
1238 // Also look up the extensions from hard-coded mappings in case that some
1239 // supported extensions are not registered in the system registry, like ogg.
1240 GetExtensionsFromHardCodedMappings(primary_mappings,
1241 arraysize(primary_mappings),
1245 GetExtensionsFromHardCodedMappings(secondary_mappings,
1246 arraysize(secondary_mappings),
1251 // Note that the elements in the source set will be appended to the target
1254 void HashSetToVector(base::hash_set<T>* source, std::vector<T>* target) {
1255 size_t old_target_size = target->size();
1256 target->resize(old_target_size + source->size());
1258 for (typename base::hash_set<T>::iterator iter = source->begin();
1259 iter != source->end(); ++iter, ++i)
1260 (*target)[old_target_size + i] = *iter;
1264 void GetExtensionsForMimeType(
1265 const std::string& unsafe_mime_type,
1266 std::vector<base::FilePath::StringType>* extensions) {
1267 if (unsafe_mime_type == "*/*" || unsafe_mime_type == "*")
1270 const std::string mime_type = base::StringToLowerASCII(unsafe_mime_type);
1271 base::hash_set<base::FilePath::StringType> unique_extensions;
1273 if (EndsWith(mime_type, "/*", true)) {
1274 std::string leading_mime_type = mime_type.substr(0, mime_type.length() - 1);
1276 // Find the matching StandardType from within kStandardTypes, or fall
1277 // through to the last (default) StandardType.
1278 const StandardType* type = NULL;
1279 for (size_t i = 0; i < arraysize(kStandardTypes); ++i) {
1280 type = &(kStandardTypes[i]);
1281 if (type->leading_mime_type &&
1282 leading_mime_type == type->leading_mime_type)
1286 GetExtensionsHelper(type->standard_types,
1287 type->standard_types_len,
1289 &unique_extensions);
1291 g_mime_util.Get().GetPlatformExtensionsForMimeType(mime_type,
1292 &unique_extensions);
1294 // Also look up the extensions from hard-coded mappings in case that some
1295 // supported extensions are not registered in the system registry, like ogg.
1296 GetExtensionsFromHardCodedMappings(primary_mappings,
1297 arraysize(primary_mappings),
1299 &unique_extensions);
1301 GetExtensionsFromHardCodedMappings(secondary_mappings,
1302 arraysize(secondary_mappings),
1304 &unique_extensions);
1307 HashSetToVector(&unique_extensions, extensions);
1310 void RemoveProprietaryMediaTypesAndCodecsForTests() {
1311 g_mime_util.Get().RemoveProprietaryMediaTypesAndCodecsForTests();
1314 const std::string GetIANAMediaType(const std::string& mime_type) {
1315 for (size_t i = 0; i < arraysize(kIanaMediaTypes); ++i) {
1316 if (StartsWithASCII(mime_type, kIanaMediaTypes[i].matcher, true)) {
1317 return kIanaMediaTypes[i].name;
1320 return std::string();
1323 CertificateMimeType GetCertificateMimeTypeForMimeType(
1324 const std::string& mime_type) {
1325 // Don't create a map, there is only one entry in the table,
1326 // except on Android.
1327 for (size_t i = 0; i < arraysize(supported_certificate_types); ++i) {
1328 if (mime_type == net::supported_certificate_types[i].mime_type)
1329 return net::supported_certificate_types[i].cert_type;
1331 return CERTIFICATE_MIME_TYPE_UNKNOWN;
1334 bool IsSupportedCertificateMimeType(const std::string& mime_type) {
1335 CertificateMimeType file_type =
1336 GetCertificateMimeTypeForMimeType(mime_type);
1337 return file_type != CERTIFICATE_MIME_TYPE_UNKNOWN;
1340 void AddMultipartValueForUpload(const std::string& value_name,
1341 const std::string& value,
1342 const std::string& mime_boundary,
1343 const std::string& content_type,
1344 std::string* post_data) {
1346 // First line is the boundary.
1347 post_data->append("--" + mime_boundary + "\r\n");
1348 // Next line is the Content-disposition.
1349 post_data->append("Content-Disposition: form-data; name=\"" +
1350 value_name + "\"\r\n");
1351 if (!content_type.empty()) {
1352 // If Content-type is specified, the next line is that.
1353 post_data->append("Content-Type: " + content_type + "\r\n");
1355 // Leave an empty line and append the value.
1356 post_data->append("\r\n" + value + "\r\n");
1359 void AddMultipartFinalDelimiterForUpload(const std::string& mime_boundary,
1360 std::string* post_data) {
1362 post_data->append("--" + mime_boundary + "--\r\n");