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| 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. | |
| 4 | |
| 5 #include <algorithm> | |
| 6 #include <iterator> | |
| 7 #include <map> | |
| 8 #include <string> | |
| 9 | |
| 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" | |
| 21 | |
| 22 #if defined(OS_ANDROID) | |
| 23 #include "base/android/build_info.h" | |
| 24 #endif | |
| 25 | |
| 26 using std::string; | |
| 27 | |
| 28 namespace net { | |
| 29 | |
| 30 // Singleton utility class for mime types. | |
| 31 class MimeUtil : public PlatformMimeUtil { | |
| 32 public: | |
| 33 enum Codec { | |
| 34 INVALID_CODEC, | |
| 35 PCM, | |
| 36 MP3, | |
| 37 MPEG2_AAC_LC, | |
| 38 MPEG2_AAC_MAIN, | |
| 39 MPEG2_AAC_SSR, | |
| 40 MPEG4_AAC_LC, | |
| 41 MPEG4_AAC_SBR_v1, | |
| 42 MPEG4_AAC_SBR_PS_v2, | |
| 43 VORBIS, | |
| 44 OPUS, | |
| 45 H264_BASELINE, | |
| 46 H264_MAIN, | |
| 47 H264_HIGH, | |
| 48 VP8, | |
| 49 VP9, | |
| 50 THEORA | |
| 51 }; | |
| 52 | |
| 53 bool GetMimeTypeFromExtension(const base::FilePath::StringType& ext, | |
| 54 std::string* mime_type) const; | |
| 55 | |
| 56 bool GetMimeTypeFromFile(const base::FilePath& file_path, | |
| 57 std::string* mime_type) const; | |
| 58 | |
| 59 bool GetWellKnownMimeTypeFromExtension(const base::FilePath::StringType& ext, | |
| 60 std::string* mime_type) const; | |
| 61 | |
| 62 bool IsSupportedImageMimeType(const std::string& mime_type) const; | |
| 63 bool IsSupportedMediaMimeType(const std::string& mime_type) const; | |
| 64 bool IsSupportedNonImageMimeType(const std::string& mime_type) const; | |
| 65 bool IsUnsupportedTextMimeType(const std::string& mime_type) const; | |
| 66 bool IsSupportedJavascriptMimeType(const std::string& mime_type) const; | |
| 67 | |
| 68 bool IsSupportedMimeType(const std::string& mime_type) const; | |
| 69 | |
| 70 bool MatchesMimeType(const std::string &mime_type_pattern, | |
| 71 const std::string &mime_type) const; | |
| 72 | |
| 73 bool ParseMimeTypeWithoutParameter(const std::string& type_string, | |
| 74 std::string* top_level_type, | |
| 75 std::string* subtype) const; | |
| 76 | |
| 77 bool IsValidTopLevelMimeType(const std::string& type_string) const; | |
| 78 | |
| 79 bool AreSupportedMediaCodecs(const std::vector<std::string>& codecs) const; | |
| 80 | |
| 81 void ParseCodecString(const std::string& codecs, | |
| 82 std::vector<std::string>* codecs_out, | |
| 83 bool strip); | |
| 84 | |
| 85 bool IsStrictMediaMimeType(const std::string& mime_type) const; | |
| 86 SupportsType IsSupportedStrictMediaMimeType( | |
| 87 const std::string& mime_type, | |
| 88 const std::vector<std::string>& codecs) const; | |
| 89 | |
| 90 void RemoveProprietaryMediaTypesAndCodecsForTests(); | |
| 91 | |
| 92 private: | |
| 93 friend struct base::DefaultLazyInstanceTraits<MimeUtil>; | |
| 94 | |
| 95 typedef base::hash_set<std::string> MimeMappings; | |
| 96 | |
| 97 typedef base::hash_set<int> CodecSet; | |
| 98 typedef std::map<std::string, CodecSet> StrictMappings; | |
| 99 struct CodecEntry { | |
| 100 CodecEntry() : codec(INVALID_CODEC), is_ambiguous(true) {} | |
| 101 CodecEntry(Codec c, bool ambiguous) : codec(c), is_ambiguous(ambiguous) {} | |
| 102 Codec codec; | |
| 103 bool is_ambiguous; | |
| 104 }; | |
| 105 typedef std::map<std::string, CodecEntry> StringToCodecMappings; | |
| 106 | |
| 107 MimeUtil(); | |
| 108 | |
| 109 // Returns IsSupported if all codec IDs in |codecs| are unambiguous | |
| 110 // and are supported by the platform. MayBeSupported is returned if | |
| 111 // at least one codec ID in |codecs| is ambiguous but all the codecs | |
| 112 // are supported by the platform. IsNotSupported is returned if at | |
| 113 // least one codec ID is not supported by the platform. | |
| 114 SupportsType AreSupportedCodecs( | |
| 115 const CodecSet& supported_codecs, | |
| 116 const std::vector<std::string>& codecs) const; | |
| 117 | |
| 118 // For faster lookup, keep hash sets. | |
| 119 void InitializeMimeTypeMaps(); | |
| 120 | |
| 121 bool GetMimeTypeFromExtensionHelper(const base::FilePath::StringType& ext, | |
| 122 bool include_platform_types, | |
| 123 std::string* mime_type) const; | |
| 124 | |
| 125 // Converts a codec ID into an Codec enum value and indicates | |
| 126 // whether the conversion was ambiguous. | |
| 127 // Returns true if this method was able to map |codec_id| to a specific | |
| 128 // Codec enum value. |codec| and |is_ambiguous| are only valid if true | |
| 129 // is returned. Otherwise their value is undefined after the call. | |
| 130 // |is_ambiguous| is true if |codec_id| did not have enough information to | |
| 131 // unambiguously determine the proper Codec enum value. If |is_ambiguous| | |
| 132 // is true |codec| contains the best guess for the intended Codec enum value. | |
| 133 bool StringToCodec(const std::string& codec_id, | |
| 134 Codec* codec, | |
| 135 bool* is_ambiguous) const; | |
| 136 | |
| 137 // Returns true if |codec| is supported by the platform. | |
| 138 // Note: This method will return false if the platform supports proprietary | |
| 139 // codecs but |allow_proprietary_codecs_| is set to false. | |
| 140 bool IsCodecSupported(Codec codec) const; | |
| 141 | |
| 142 // Returns true if |codec| refers to a proprietary codec. | |
| 143 bool IsCodecProprietary(Codec codec) const; | |
| 144 | |
| 145 // Returns true and sets |*default_codec| if |mime_type| has a default codec | |
| 146 // associated with it. Returns false otherwise and the value of | |
| 147 // |*default_codec| is undefined. | |
| 148 bool GetDefaultCodecLowerCase(const std::string& mime_type_lower_case, | |
| 149 Codec* default_codec) const; | |
| 150 | |
| 151 // Returns true if |mime_type_lower_case| has a default codec associated with | |
| 152 // it and IsCodecSupported() returns true for that particular codec. | |
| 153 bool IsDefaultCodecSupportedLowerCase( | |
| 154 const std::string& mime_type_lower_case) const; | |
| 155 | |
| 156 MimeMappings image_map_; | |
| 157 MimeMappings media_map_; | |
| 158 MimeMappings non_image_map_; | |
| 159 MimeMappings unsupported_text_map_; | |
| 160 MimeMappings javascript_map_; | |
| 161 | |
| 162 // A map of mime_types and hash map of the supported codecs for the mime_type. | |
| 163 StrictMappings strict_format_map_; | |
| 164 | |
| 165 // Keeps track of whether proprietary codec support should be | |
| 166 // advertised to callers. | |
| 167 bool allow_proprietary_codecs_; | |
| 168 | |
| 169 // Lookup table for string compare based string -> Codec mappings. | |
| 170 StringToCodecMappings string_to_codec_map_; | |
| 171 }; // class MimeUtil | |
| 172 | |
| 173 // This variable is Leaky because we need to access it from WorkerPool threads. | |
| 174 static base::LazyInstance<MimeUtil>::Leaky g_mime_util = | |
| 175 LAZY_INSTANCE_INITIALIZER; | |
| 176 | |
| 177 struct MimeInfo { | |
| 178 const char* const mime_type; | |
| 179 const char* const extensions; // comma separated list | |
| 180 }; | |
| 181 | |
| 182 static const MimeInfo primary_mappings[] = { | |
| 183 { "text/html", "html,htm,shtml,shtm" }, | |
| 184 { "text/css", "css" }, | |
| 185 { "text/xml", "xml" }, | |
| 186 { "image/gif", "gif" }, | |
| 187 { "image/jpeg", "jpeg,jpg" }, | |
| 188 { "image/webp", "webp" }, | |
| 189 { "image/png", "png" }, | |
| 190 { "video/mp4", "mp4,m4v" }, | |
| 191 { "audio/x-m4a", "m4a" }, | |
| 192 { "audio/mp3", "mp3" }, | |
| 193 { "video/ogg", "ogv,ogm" }, | |
| 194 { "audio/ogg", "ogg,oga,opus" }, | |
| 195 { "video/webm", "webm" }, | |
| 196 { "audio/webm", "webm" }, | |
| 197 { "audio/wav", "wav" }, | |
| 198 { "application/xhtml+xml", "xhtml,xht,xhtm" }, | |
| 199 { "application/x-chrome-extension", "crx" }, | |
| 200 { "multipart/related", "mhtml,mht" } | |
| 201 }; | |
| 202 | |
| 203 static const MimeInfo secondary_mappings[] = { | |
| 204 { "application/octet-stream", "exe,com,bin" }, | |
| 205 { "application/gzip", "gz" }, | |
| 206 { "application/pdf", "pdf" }, | |
| 207 { "application/postscript", "ps,eps,ai" }, | |
| 208 { "application/javascript", "js" }, | |
| 209 { "application/font-woff", "woff" }, | |
| 210 { "image/bmp", "bmp" }, | |
| 211 { "image/x-icon", "ico" }, | |
| 212 { "image/vnd.microsoft.icon", "ico" }, | |
| 213 { "image/jpeg", "jfif,pjpeg,pjp" }, | |
| 214 { "image/tiff", "tiff,tif" }, | |
| 215 { "image/x-xbitmap", "xbm" }, | |
| 216 { "image/svg+xml", "svg,svgz" }, | |
| 217 { "image/x-png", "png"}, | |
| 218 { "message/rfc822", "eml" }, | |
| 219 { "text/plain", "txt,text" }, | |
| 220 { "text/html", "ehtml" }, | |
| 221 { "application/rss+xml", "rss" }, | |
| 222 { "application/rdf+xml", "rdf" }, | |
| 223 { "text/xml", "xsl,xbl,xslt" }, | |
| 224 { "application/vnd.mozilla.xul+xml", "xul" }, | |
| 225 { "application/x-shockwave-flash", "swf,swl" }, | |
| 226 { "application/pkcs7-mime", "p7m,p7c,p7z" }, | |
| 227 { "application/pkcs7-signature", "p7s" }, | |
| 228 { "application/x-mpegurl", "m3u8" }, | |
| 229 }; | |
| 230 | |
| 231 static const char* FindMimeType(const MimeInfo* mappings, | |
| 232 size_t mappings_len, | |
| 233 const char* ext) { | |
| 234 size_t ext_len = strlen(ext); | |
| 235 | |
| 236 for (size_t i = 0; i < mappings_len; ++i) { | |
| 237 const char* extensions = mappings[i].extensions; | |
| 238 for (;;) { | |
| 239 size_t end_pos = strcspn(extensions, ","); | |
| 240 if (end_pos == ext_len && | |
| 241 base::strncasecmp(extensions, ext, ext_len) == 0) | |
| 242 return mappings[i].mime_type; | |
| 243 extensions += end_pos; | |
| 244 if (!*extensions) | |
| 245 break; | |
| 246 extensions += 1; // skip over comma | |
| 247 } | |
| 248 } | |
| 249 return NULL; | |
| 250 } | |
| 251 | |
| 252 bool MimeUtil::GetMimeTypeFromExtension(const base::FilePath::StringType& ext, | |
| 253 string* result) const { | |
| 254 return GetMimeTypeFromExtensionHelper(ext, true, result); | |
| 255 } | |
| 256 | |
| 257 bool MimeUtil::GetWellKnownMimeTypeFromExtension( | |
| 258 const base::FilePath::StringType& ext, | |
| 259 string* result) const { | |
| 260 return GetMimeTypeFromExtensionHelper(ext, false, result); | |
| 261 } | |
| 262 | |
| 263 bool MimeUtil::GetMimeTypeFromFile(const base::FilePath& file_path, | |
| 264 string* result) const { | |
| 265 base::FilePath::StringType file_name_str = file_path.Extension(); | |
| 266 if (file_name_str.empty()) | |
| 267 return false; | |
| 268 return GetMimeTypeFromExtension(file_name_str.substr(1), result); | |
| 269 } | |
| 270 | |
| 271 bool MimeUtil::GetMimeTypeFromExtensionHelper( | |
| 272 const base::FilePath::StringType& ext, | |
| 273 bool include_platform_types, | |
| 274 string* result) const { | |
| 275 // Avoids crash when unable to handle a long file path. See crbug.com/48733. | |
| 276 const unsigned kMaxFilePathSize = 65536; | |
| 277 if (ext.length() > kMaxFilePathSize) | |
| 278 return false; | |
| 279 | |
| 280 // We implement the same algorithm as Mozilla for mapping a file extension to | |
| 281 // a mime type. That is, we first check a hard-coded list (that cannot be | |
| 282 // overridden), and then if not found there, we defer to the system registry. | |
| 283 // Finally, we scan a secondary hard-coded list to catch types that we can | |
| 284 // deduce but that we also want to allow the OS to override. | |
| 285 | |
| 286 base::FilePath path_ext(ext); | |
| 287 const string ext_narrow_str = path_ext.AsUTF8Unsafe(); | |
| 288 const char* mime_type = FindMimeType(primary_mappings, | |
| 289 arraysize(primary_mappings), | |
| 290 ext_narrow_str.c_str()); | |
| 291 if (mime_type) { | |
| 292 *result = mime_type; | |
| 293 return true; | |
| 294 } | |
| 295 | |
| 296 if (include_platform_types && GetPlatformMimeTypeFromExtension(ext, result)) | |
| 297 return true; | |
| 298 | |
| 299 mime_type = FindMimeType(secondary_mappings, arraysize(secondary_mappings), | |
| 300 ext_narrow_str.c_str()); | |
| 301 if (mime_type) { | |
| 302 *result = mime_type; | |
| 303 return true; | |
| 304 } | |
| 305 | |
| 306 return false; | |
| 307 } | |
| 308 | |
| 309 // From WebKit's WebCore/platform/MIMETypeRegistry.cpp: | |
| 310 | |
| 311 static const char* const supported_image_types[] = { | |
| 312 "image/jpeg", | |
| 313 "image/pjpeg", | |
| 314 "image/jpg", | |
| 315 "image/webp", | |
| 316 "image/png", | |
| 317 "image/gif", | |
| 318 "image/bmp", | |
| 319 "image/vnd.microsoft.icon", // ico | |
| 320 "image/x-icon", // ico | |
| 321 "image/x-xbitmap", // xbm | |
| 322 "image/x-png" | |
| 323 }; | |
| 324 | |
| 325 // A list of media types: http://en.wikipedia.org/wiki/Internet_media_type | |
| 326 // A comprehensive mime type list: http://plugindoc.mozdev.org/winmime.php | |
| 327 // This set of codecs is supported by all variations of Chromium. | |
| 328 static const char* const common_media_types[] = { | |
| 329 // Ogg. | |
| 330 "audio/ogg", | |
| 331 "application/ogg", | |
| 332 #if !defined(OS_ANDROID) // Android doesn't support Ogg Theora. | |
| 333 "video/ogg", | |
| 334 #endif | |
| 335 | |
| 336 // WebM. | |
| 337 "video/webm", | |
| 338 "audio/webm", | |
| 339 | |
| 340 // Wav. | |
| 341 "audio/wav", | |
| 342 "audio/x-wav", | |
| 343 | |
| 344 #if defined(OS_ANDROID) | |
| 345 // HLS. Supported by Android ICS and above. | |
| 346 "application/vnd.apple.mpegurl", | |
| 347 "application/x-mpegurl", | |
| 348 #endif | |
| 349 }; | |
| 350 | |
| 351 // List of proprietary types only supported by Google Chrome. | |
| 352 static const char* const proprietary_media_types[] = { | |
| 353 // MPEG-4. | |
| 354 "video/mp4", | |
| 355 "video/x-m4v", | |
| 356 "audio/mp4", | |
| 357 "audio/x-m4a", | |
| 358 | |
| 359 // MP3. | |
| 360 "audio/mp3", | |
| 361 "audio/x-mp3", | |
| 362 "audio/mpeg", | |
| 363 "audio/aac", | |
| 364 | |
| 365 #if defined(ENABLE_MPEG2TS_STREAM_PARSER) | |
| 366 // MPEG-2 TS. | |
| 367 "video/mp2t", | |
| 368 #endif | |
| 369 }; | |
| 370 | |
| 371 // Note: | |
| 372 // - does not include javascript types list (see supported_javascript_types) | |
| 373 // - does not include types starting with "text/" (see | |
| 374 // IsSupportedNonImageMimeType()) | |
| 375 static const char* const supported_non_image_types[] = { | |
| 376 "image/svg+xml", // SVG is text-based XML, even though it has an image/ type | |
| 377 "application/xml", | |
| 378 "application/atom+xml", | |
| 379 "application/rss+xml", | |
| 380 "application/xhtml+xml", | |
| 381 "application/json", | |
| 382 "multipart/related", // For MHTML support. | |
| 383 "multipart/x-mixed-replace" | |
| 384 // Note: ADDING a new type here will probably render it AS HTML. This can | |
| 385 // result in cross site scripting. | |
| 386 }; | |
| 387 | |
| 388 // Dictionary of cryptographic file mime types. | |
| 389 struct CertificateMimeTypeInfo { | |
| 390 const char* const mime_type; | |
| 391 CertificateMimeType cert_type; | |
| 392 }; | |
| 393 | |
| 394 static const CertificateMimeTypeInfo supported_certificate_types[] = { | |
| 395 { "application/x-x509-user-cert", | |
| 396 CERTIFICATE_MIME_TYPE_X509_USER_CERT }, | |
| 397 #if defined(OS_ANDROID) | |
| 398 { "application/x-x509-ca-cert", CERTIFICATE_MIME_TYPE_X509_CA_CERT }, | |
| 399 { "application/x-pkcs12", CERTIFICATE_MIME_TYPE_PKCS12_ARCHIVE }, | |
| 400 #endif | |
| 401 }; | |
| 402 | |
| 403 // These types are excluded from the logic that allows all text/ types because | |
| 404 // while they are technically text, it's very unlikely that a user expects to | |
| 405 // see them rendered in text form. | |
| 406 static const char* const unsupported_text_types[] = { | |
| 407 "text/calendar", | |
| 408 "text/x-calendar", | |
| 409 "text/x-vcalendar", | |
| 410 "text/vcalendar", | |
| 411 "text/vcard", | |
| 412 "text/x-vcard", | |
| 413 "text/directory", | |
| 414 "text/ldif", | |
| 415 "text/qif", | |
| 416 "text/x-qif", | |
| 417 "text/x-csv", | |
| 418 "text/x-vcf", | |
| 419 "text/rtf", | |
| 420 "text/comma-separated-values", | |
| 421 "text/csv", | |
| 422 "text/tab-separated-values", | |
| 423 "text/tsv", | |
| 424 "text/ofx", // http://crbug.com/162238 | |
| 425 "text/vnd.sun.j2me.app-descriptor" // http://crbug.com/176450 | |
| 426 }; | |
| 427 | |
| 428 // Mozilla 1.8 and WinIE 7 both accept text/javascript and text/ecmascript. | |
| 429 // Mozilla 1.8 accepts application/javascript, application/ecmascript, and | |
| 430 // application/x-javascript, but WinIE 7 doesn't. | |
| 431 // WinIE 7 accepts text/javascript1.1 - text/javascript1.3, text/jscript, and | |
| 432 // text/livescript, but Mozilla 1.8 doesn't. | |
| 433 // Mozilla 1.8 allows leading and trailing whitespace, but WinIE 7 doesn't. | |
| 434 // Mozilla 1.8 and WinIE 7 both accept the empty string, but neither accept a | |
| 435 // whitespace-only string. | |
| 436 // We want to accept all the values that either of these browsers accept, but | |
| 437 // not other values. | |
| 438 static const char* const supported_javascript_types[] = { | |
| 439 "text/javascript", | |
| 440 "text/ecmascript", | |
| 441 "application/javascript", | |
| 442 "application/ecmascript", | |
| 443 "application/x-javascript", | |
| 444 "text/javascript1.1", | |
| 445 "text/javascript1.2", | |
| 446 "text/javascript1.3", | |
| 447 "text/jscript", | |
| 448 "text/livescript" | |
| 449 }; | |
| 450 | |
| 451 #if defined(OS_ANDROID) | |
| 452 static bool IsCodecSupportedOnAndroid(MimeUtil::Codec codec) { | |
| 453 switch (codec) { | |
| 454 case MimeUtil::INVALID_CODEC: | |
| 455 return false; | |
| 456 | |
| 457 case MimeUtil::PCM: | |
| 458 case MimeUtil::MP3: | |
| 459 case MimeUtil::MPEG4_AAC_LC: | |
| 460 case MimeUtil::MPEG4_AAC_SBR_v1: | |
| 461 case MimeUtil::MPEG4_AAC_SBR_PS_v2: | |
| 462 case MimeUtil::H264_BASELINE: | |
| 463 case MimeUtil::H264_MAIN: | |
| 464 case MimeUtil::H264_HIGH: | |
| 465 case MimeUtil::VP8: | |
| 466 case MimeUtil::VORBIS: | |
| 467 return true; | |
| 468 | |
| 469 case MimeUtil::MPEG2_AAC_LC: | |
| 470 case MimeUtil::MPEG2_AAC_MAIN: | |
| 471 case MimeUtil::MPEG2_AAC_SSR: | |
| 472 // MPEG-2 variants of AAC are not supported on Android. | |
| 473 return false; | |
| 474 | |
| 475 case MimeUtil::VP9: | |
| 476 // VP9 is supported only in KitKat+ (API Level 19). | |
| 477 return base::android::BuildInfo::GetInstance()->sdk_int() >= 19; | |
| 478 | |
| 479 case MimeUtil::OPUS: | |
| 480 // Opus is supported only in Lollipop+ (API Level 21). | |
| 481 return base::android::BuildInfo::GetInstance()->sdk_int() >= 21; | |
| 482 | |
| 483 case MimeUtil::THEORA: | |
| 484 return false; | |
| 485 } | |
| 486 | |
| 487 return false; | |
| 488 } | |
| 489 | |
| 490 static bool IsMimeTypeSupportedOnAndroid(const std::string& mimeType) { | |
| 491 // HLS codecs are supported in ICS and above (API level 14) | |
| 492 if ((!mimeType.compare("application/vnd.apple.mpegurl") || | |
| 493 !mimeType.compare("application/x-mpegurl")) && | |
| 494 base::android::BuildInfo::GetInstance()->sdk_int() < 14) { | |
| 495 return false; | |
| 496 } | |
| 497 return true; | |
| 498 } | |
| 499 #endif | |
| 500 | |
| 501 struct MediaFormatStrict { | |
| 502 const char* const mime_type; | |
| 503 const char* const codecs_list; | |
| 504 }; | |
| 505 | |
| 506 // Following is the list of RFC 6381 compliant codecs: | |
| 507 // mp4a.66 - MPEG-2 AAC MAIN | |
| 508 // mp4a.67 - MPEG-2 AAC LC | |
| 509 // mp4a.68 - MPEG-2 AAC SSR | |
| 510 // mp4a.69 - MPEG-2 extension to MPEG-1 | |
| 511 // mp4a.6B - MPEG-1 audio | |
| 512 // mp4a.40.2 - MPEG-4 AAC LC | |
| 513 // mp4a.40.02 - MPEG-4 AAC LC (leading 0 in aud-oti for compatibility) | |
| 514 // mp4a.40.5 - MPEG-4 HE-AAC v1 (AAC LC + SBR) | |
| 515 // mp4a.40.05 - MPEG-4 HE-AAC v1 (AAC LC + SBR) (leading 0 in aud-oti for | |
| 516 // compatibility) | |
| 517 // mp4a.40.29 - MPEG-4 HE-AAC v2 (AAC LC + SBR + PS) | |
| 518 // | |
| 519 // avc1.42E0xx - H.264 Baseline | |
| 520 // avc1.4D40xx - H.264 Main | |
| 521 // avc1.6400xx - H.264 High | |
| 522 static const char kMP4AudioCodecsExpression[] = | |
| 523 "mp4a.66,mp4a.67,mp4a.68,mp4a.69,mp4a.6B,mp4a.40.2,mp4a.40.02,mp4a.40.5," | |
| 524 "mp4a.40.05,mp4a.40.29"; | |
| 525 static const char kMP4VideoCodecsExpression[] = | |
| 526 "avc1.42E00A,avc1.4D400A,avc1.64000A," | |
| 527 "mp4a.66,mp4a.67,mp4a.68,mp4a.69,mp4a.6B,mp4a.40.2,mp4a.40.02,mp4a.40.5," | |
| 528 "mp4a.40.05,mp4a.40.29"; | |
| 529 | |
| 530 static const MediaFormatStrict format_codec_mappings[] = { | |
| 531 {"video/webm", "opus,vorbis,vp8,vp8.0,vp9,vp9.0"}, | |
| 532 {"audio/webm", "opus,vorbis"}, | |
| 533 {"audio/wav", "1"}, | |
| 534 {"audio/x-wav", "1"}, | |
| 535 // Android does not support Opus in Ogg container. | |
| 536 #if defined(OS_ANDROID) | |
| 537 {"video/ogg", "theora,vorbis"}, | |
| 538 {"audio/ogg", "vorbis"}, | |
| 539 {"application/ogg", "theora,vorbis"}, | |
| 540 #else | |
| 541 {"video/ogg", "opus,theora,vorbis"}, | |
| 542 {"audio/ogg", "opus,vorbis"}, | |
| 543 {"application/ogg", "opus,theora,vorbis"}, | |
| 544 #endif | |
| 545 {"audio/mpeg", "mp3"}, | |
| 546 {"audio/mp3", ""}, | |
| 547 {"audio/x-mp3", ""}, | |
| 548 {"audio/mp4", kMP4AudioCodecsExpression}, | |
| 549 {"audio/x-m4a", kMP4AudioCodecsExpression}, | |
| 550 {"video/mp4", kMP4VideoCodecsExpression}, | |
| 551 {"video/x-m4v", kMP4VideoCodecsExpression}, | |
| 552 {"application/x-mpegurl", kMP4VideoCodecsExpression}, | |
| 553 {"application/vnd.apple.mpegurl", kMP4VideoCodecsExpression}}; | |
| 554 | |
| 555 struct CodecIDMappings { | |
| 556 const char* const codec_id; | |
| 557 MimeUtil::Codec codec; | |
| 558 }; | |
| 559 | |
| 560 // List of codec IDs that provide enough information to determine the | |
| 561 // codec and profile being requested. | |
| 562 // | |
| 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.40.02", MimeUtil::MPEG4_AAC_LC}, | |
| 574 {"mp4a.40.5", MimeUtil::MPEG4_AAC_SBR_v1}, | |
| 575 {"mp4a.40.05", MimeUtil::MPEG4_AAC_SBR_v1}, | |
| 576 {"mp4a.40.29", MimeUtil::MPEG4_AAC_SBR_PS_v2}, | |
| 577 {"vorbis", MimeUtil::VORBIS}, | |
| 578 {"opus", MimeUtil::OPUS}, | |
| 579 {"vp8", MimeUtil::VP8}, | |
| 580 {"vp8.0", MimeUtil::VP8}, | |
| 581 {"vp9", MimeUtil::VP9}, | |
| 582 {"vp9.0", MimeUtil::VP9}, | |
| 583 {"theora", MimeUtil::THEORA}}; | |
| 584 | |
| 585 // List of codec IDs that are ambiguous and don't provide | |
| 586 // enough information to determine the codec and profile. | |
| 587 // The codec in these entries indicate the codec and profile | |
| 588 // we assume the user is trying to indicate. | |
| 589 static const CodecIDMappings kAmbiguousCodecIDs[] = { | |
| 590 { "mp4a.40", MimeUtil::MPEG4_AAC_LC }, | |
| 591 { "avc1", MimeUtil::H264_BASELINE }, | |
| 592 { "avc3", MimeUtil::H264_BASELINE }, | |
| 593 }; | |
| 594 | |
| 595 MimeUtil::MimeUtil() : allow_proprietary_codecs_(false) { | |
| 596 InitializeMimeTypeMaps(); | |
| 597 } | |
| 598 | |
| 599 SupportsType MimeUtil::AreSupportedCodecs( | |
| 600 const CodecSet& supported_codecs, | |
| 601 const std::vector<std::string>& codecs) const { | |
| 602 DCHECK(!supported_codecs.empty()); | |
| 603 DCHECK(!codecs.empty()); | |
| 604 | |
| 605 SupportsType result = IsSupported; | |
| 606 for (size_t i = 0; i < codecs.size(); ++i) { | |
| 607 bool is_ambiguous = true; | |
| 608 Codec codec = INVALID_CODEC; | |
| 609 if (!StringToCodec(codecs[i], &codec, &is_ambiguous)) | |
| 610 return IsNotSupported; | |
| 611 | |
| 612 if (!IsCodecSupported(codec) || | |
| 613 supported_codecs.find(codec) == supported_codecs.end()) { | |
| 614 return IsNotSupported; | |
| 615 } | |
| 616 | |
| 617 if (is_ambiguous) | |
| 618 result = MayBeSupported; | |
| 619 } | |
| 620 | |
| 621 return result; | |
| 622 } | |
| 623 | |
| 624 void MimeUtil::InitializeMimeTypeMaps() { | |
| 625 for (size_t i = 0; i < arraysize(supported_image_types); ++i) | |
| 626 image_map_.insert(supported_image_types[i]); | |
| 627 | |
| 628 // Initialize the supported non-image types. | |
| 629 for (size_t i = 0; i < arraysize(supported_non_image_types); ++i) | |
| 630 non_image_map_.insert(supported_non_image_types[i]); | |
| 631 for (size_t i = 0; i < arraysize(supported_certificate_types); ++i) | |
| 632 non_image_map_.insert(supported_certificate_types[i].mime_type); | |
| 633 for (size_t i = 0; i < arraysize(unsupported_text_types); ++i) | |
| 634 unsupported_text_map_.insert(unsupported_text_types[i]); | |
| 635 for (size_t i = 0; i < arraysize(supported_javascript_types); ++i) | |
| 636 non_image_map_.insert(supported_javascript_types[i]); | |
| 637 for (size_t i = 0; i < arraysize(common_media_types); ++i) { | |
| 638 #if defined(OS_ANDROID) | |
| 639 if (!IsMimeTypeSupportedOnAndroid(common_media_types[i])) | |
| 640 continue; | |
| 641 #endif | |
| 642 non_image_map_.insert(common_media_types[i]); | |
| 643 } | |
| 644 #if defined(USE_PROPRIETARY_CODECS) | |
| 645 allow_proprietary_codecs_ = true; | |
| 646 | |
| 647 for (size_t i = 0; i < arraysize(proprietary_media_types); ++i) | |
| 648 non_image_map_.insert(proprietary_media_types[i]); | |
| 649 #endif | |
| 650 | |
| 651 // Initialize the supported media types. | |
| 652 for (size_t i = 0; i < arraysize(common_media_types); ++i) { | |
| 653 #if defined(OS_ANDROID) | |
| 654 if (!IsMimeTypeSupportedOnAndroid(common_media_types[i])) | |
| 655 continue; | |
| 656 #endif | |
| 657 media_map_.insert(common_media_types[i]); | |
| 658 } | |
| 659 #if defined(USE_PROPRIETARY_CODECS) | |
| 660 for (size_t i = 0; i < arraysize(proprietary_media_types); ++i) | |
| 661 media_map_.insert(proprietary_media_types[i]); | |
| 662 #endif | |
| 663 | |
| 664 for (size_t i = 0; i < arraysize(supported_javascript_types); ++i) | |
| 665 javascript_map_.insert(supported_javascript_types[i]); | |
| 666 | |
| 667 for (size_t i = 0; i < arraysize(kUnambiguousCodecIDs); ++i) { | |
| 668 string_to_codec_map_[kUnambiguousCodecIDs[i].codec_id] = | |
| 669 CodecEntry(kUnambiguousCodecIDs[i].codec, false); | |
| 670 } | |
| 671 | |
| 672 for (size_t i = 0; i < arraysize(kAmbiguousCodecIDs); ++i) { | |
| 673 string_to_codec_map_[kAmbiguousCodecIDs[i].codec_id] = | |
| 674 CodecEntry(kAmbiguousCodecIDs[i].codec, true); | |
| 675 } | |
| 676 | |
| 677 // Initialize the strict supported media types. | |
| 678 for (size_t i = 0; i < arraysize(format_codec_mappings); ++i) { | |
| 679 std::vector<std::string> mime_type_codecs; | |
| 680 ParseCodecString(format_codec_mappings[i].codecs_list, | |
| 681 &mime_type_codecs, | |
| 682 false); | |
| 683 | |
| 684 CodecSet codecs; | |
| 685 for (size_t j = 0; j < mime_type_codecs.size(); ++j) { | |
| 686 Codec codec = INVALID_CODEC; | |
| 687 bool is_ambiguous = true; | |
| 688 CHECK(StringToCodec(mime_type_codecs[j], &codec, &is_ambiguous)); | |
| 689 DCHECK(!is_ambiguous); | |
| 690 codecs.insert(codec); | |
| 691 } | |
| 692 | |
| 693 strict_format_map_[format_codec_mappings[i].mime_type] = codecs; | |
| 694 } | |
| 695 } | |
| 696 | |
| 697 bool MimeUtil::IsSupportedImageMimeType(const std::string& mime_type) const { | |
| 698 return image_map_.find(base::StringToLowerASCII(mime_type)) != | |
| 699 image_map_.end(); | |
| 700 } | |
| 701 | |
| 702 bool MimeUtil::IsSupportedMediaMimeType(const std::string& mime_type) const { | |
| 703 return media_map_.find(base::StringToLowerASCII(mime_type)) != | |
| 704 media_map_.end(); | |
| 705 } | |
| 706 | |
| 707 bool MimeUtil::IsSupportedNonImageMimeType(const std::string& mime_type) const { | |
| 708 return non_image_map_.find(base::StringToLowerASCII(mime_type)) != | |
| 709 non_image_map_.end() || | |
| 710 (StartsWithASCII(mime_type, "text/", false /* case insensitive */) && | |
| 711 !IsUnsupportedTextMimeType(mime_type)) || | |
| 712 (StartsWithASCII(mime_type, "application/", false) && | |
| 713 MatchesMimeType("application/*+json", mime_type)); | |
| 714 } | |
| 715 | |
| 716 bool MimeUtil::IsUnsupportedTextMimeType(const std::string& mime_type) const { | |
| 717 return unsupported_text_map_.find(base::StringToLowerASCII(mime_type)) != | |
| 718 unsupported_text_map_.end(); | |
| 719 } | |
| 720 | |
| 721 bool MimeUtil::IsSupportedJavascriptMimeType( | |
| 722 const std::string& mime_type) const { | |
| 723 return javascript_map_.find(mime_type) != javascript_map_.end(); | |
| 724 } | |
| 725 | |
| 726 // Mirrors WebViewImpl::CanShowMIMEType() | |
| 727 bool MimeUtil::IsSupportedMimeType(const std::string& mime_type) const { | |
| 728 return (StartsWithASCII(mime_type, "image/", false) && | |
| 729 IsSupportedImageMimeType(mime_type)) || | |
| 730 IsSupportedNonImageMimeType(mime_type); | |
| 731 } | |
| 732 | |
| 733 // Tests for MIME parameter equality. Each parameter in the |mime_type_pattern| | |
| 734 // must be matched by a parameter in the |mime_type|. If there are no | |
| 735 // parameters in the pattern, the match is a success. | |
| 736 // | |
| 737 // According rfc2045 keys of parameters are case-insensitive, while values may | |
| 738 // or may not be case-sensitive, but they are usually case-sensitive. So, this | |
| 739 // function matches values in *case-sensitive* manner, however note that this | |
| 740 // may produce some false negatives. | |
| 741 bool MatchesMimeTypeParameters(const std::string& mime_type_pattern, | |
| 742 const std::string& mime_type) { | |
| 743 typedef std::map<std::string, std::string> StringPairMap; | |
| 744 | |
| 745 const std::string::size_type semicolon = mime_type_pattern.find(';'); | |
| 746 const std::string::size_type test_semicolon = mime_type.find(';'); | |
| 747 if (semicolon != std::string::npos) { | |
| 748 if (test_semicolon == std::string::npos) | |
| 749 return false; | |
| 750 | |
| 751 base::StringPairs pattern_parameters; | |
| 752 base::SplitStringIntoKeyValuePairs(mime_type_pattern.substr(semicolon + 1), | |
| 753 '=', ';', &pattern_parameters); | |
| 754 base::StringPairs test_parameters; | |
| 755 base::SplitStringIntoKeyValuePairs(mime_type.substr(test_semicolon + 1), | |
| 756 '=', ';', &test_parameters); | |
| 757 | |
| 758 // Put the parameters to maps with the keys converted to lower case. | |
| 759 StringPairMap pattern_parameter_map; | |
| 760 for (const auto& pair : pattern_parameters) { | |
| 761 pattern_parameter_map[base::StringToLowerASCII(pair.first)] = pair.second; | |
| 762 } | |
| 763 | |
| 764 StringPairMap test_parameter_map; | |
| 765 for (const auto& pair : test_parameters) { | |
| 766 test_parameter_map[base::StringToLowerASCII(pair.first)] = pair.second; | |
| 767 } | |
| 768 | |
| 769 if (pattern_parameter_map.size() > test_parameter_map.size()) | |
| 770 return false; | |
| 771 | |
| 772 for (const auto& parameter_pair : pattern_parameter_map) { | |
| 773 const auto& test_parameter_pair_it = | |
| 774 test_parameter_map.find(parameter_pair.first); | |
| 775 if (test_parameter_pair_it == test_parameter_map.end()) | |
| 776 return false; | |
| 777 if (parameter_pair.second != test_parameter_pair_it->second) | |
| 778 return false; | |
| 779 } | |
| 780 } | |
| 781 | |
| 782 return true; | |
| 783 } | |
| 784 | |
| 785 // This comparison handles absolute maching and also basic | |
| 786 // wildcards. The plugin mime types could be: | |
| 787 // application/x-foo | |
| 788 // application/* | |
| 789 // application/*+xml | |
| 790 // * | |
| 791 // Also tests mime parameters -- all parameters in the pattern must be present | |
| 792 // in the tested type for a match to succeed. | |
| 793 bool MimeUtil::MatchesMimeType(const std::string& mime_type_pattern, | |
| 794 const std::string& mime_type) const { | |
| 795 if (mime_type_pattern.empty()) | |
| 796 return false; | |
| 797 | |
| 798 std::string::size_type semicolon = mime_type_pattern.find(';'); | |
| 799 const std::string base_pattern(mime_type_pattern.substr(0, semicolon)); | |
| 800 semicolon = mime_type.find(';'); | |
| 801 const std::string base_type(mime_type.substr(0, semicolon)); | |
| 802 | |
| 803 if (base_pattern == "*" || base_pattern == "*/*") | |
| 804 return MatchesMimeTypeParameters(mime_type_pattern, mime_type); | |
| 805 | |
| 806 const std::string::size_type star = base_pattern.find('*'); | |
| 807 if (star == std::string::npos) { | |
| 808 if (base_pattern.size() == base_type.size() && | |
| 809 base::strncasecmp(base_pattern.c_str(), base_type.c_str(), | |
| 810 base_pattern.size()) == 0) { | |
| 811 return MatchesMimeTypeParameters(mime_type_pattern, mime_type); | |
| 812 } else { | |
| 813 return false; | |
| 814 } | |
| 815 } | |
| 816 | |
| 817 // Test length to prevent overlap between |left| and |right|. | |
| 818 if (base_type.length() < base_pattern.length() - 1) | |
| 819 return false; | |
| 820 | |
| 821 const std::string left(base_pattern.substr(0, star)); | |
| 822 const std::string right(base_pattern.substr(star + 1)); | |
| 823 | |
| 824 if (!StartsWithASCII(base_type, left, false)) | |
| 825 return false; | |
| 826 | |
| 827 if (!right.empty() && !EndsWith(base_type, right, false)) | |
| 828 return false; | |
| 829 | |
| 830 return MatchesMimeTypeParameters(mime_type_pattern, mime_type); | |
| 831 } | |
| 832 | |
| 833 // See http://www.iana.org/assignments/media-types/media-types.xhtml | |
| 834 static const char* const legal_top_level_types[] = { | |
| 835 "application", | |
| 836 "audio", | |
| 837 "example", | |
| 838 "image", | |
| 839 "message", | |
| 840 "model", | |
| 841 "multipart", | |
| 842 "text", | |
| 843 "video", | |
| 844 }; | |
| 845 | |
| 846 bool MimeUtil::ParseMimeTypeWithoutParameter( | |
| 847 const std::string& type_string, | |
| 848 std::string* top_level_type, | |
| 849 std::string* subtype) const { | |
| 850 std::vector<std::string> components; | |
| 851 base::SplitString(type_string, '/', &components); | |
| 852 if (components.size() != 2 || | |
| 853 !HttpUtil::IsToken(components[0]) || | |
| 854 !HttpUtil::IsToken(components[1])) | |
| 855 return false; | |
| 856 | |
| 857 if (top_level_type) | |
| 858 *top_level_type = components[0]; | |
| 859 if (subtype) | |
| 860 *subtype = components[1]; | |
| 861 return true; | |
| 862 } | |
| 863 | |
| 864 bool MimeUtil::IsValidTopLevelMimeType(const std::string& type_string) const { | |
| 865 std::string lower_type = base::StringToLowerASCII(type_string); | |
| 866 for (size_t i = 0; i < arraysize(legal_top_level_types); ++i) { | |
| 867 if (lower_type.compare(legal_top_level_types[i]) == 0) | |
| 868 return true; | |
| 869 } | |
| 870 | |
| 871 return type_string.size() > 2 && StartsWithASCII(type_string, "x-", false); | |
| 872 } | |
| 873 | |
| 874 bool MimeUtil::AreSupportedMediaCodecs( | |
| 875 const std::vector<std::string>& codecs) const { | |
| 876 for (size_t i = 0; i < codecs.size(); ++i) { | |
| 877 Codec codec = INVALID_CODEC; | |
| 878 bool is_ambiguous = true; | |
| 879 if (!StringToCodec(codecs[i], &codec, &is_ambiguous) || | |
| 880 !IsCodecSupported(codec)) { | |
| 881 return false; | |
| 882 } | |
| 883 } | |
| 884 return true; | |
| 885 } | |
| 886 | |
| 887 void MimeUtil::ParseCodecString(const std::string& codecs, | |
| 888 std::vector<std::string>* codecs_out, | |
| 889 bool strip) { | |
| 890 std::string no_quote_codecs; | |
| 891 base::TrimString(codecs, "\"", &no_quote_codecs); | |
| 892 base::SplitString(no_quote_codecs, ',', codecs_out); | |
| 893 | |
| 894 if (!strip) | |
| 895 return; | |
| 896 | |
| 897 // Strip everything past the first '.' | |
| 898 for (std::vector<std::string>::iterator it = codecs_out->begin(); | |
| 899 it != codecs_out->end(); | |
| 900 ++it) { | |
| 901 size_t found = it->find_first_of('.'); | |
| 902 if (found != std::string::npos) | |
| 903 it->resize(found); | |
| 904 } | |
| 905 } | |
| 906 | |
| 907 bool MimeUtil::IsStrictMediaMimeType(const std::string& mime_type) const { | |
| 908 return strict_format_map_.find(base::StringToLowerASCII(mime_type)) != | |
| 909 strict_format_map_.end(); | |
| 910 } | |
| 911 | |
| 912 SupportsType MimeUtil::IsSupportedStrictMediaMimeType( | |
| 913 const std::string& mime_type, | |
| 914 const std::vector<std::string>& codecs) const { | |
| 915 const std::string mime_type_lower_case = base::StringToLowerASCII(mime_type); | |
| 916 StrictMappings::const_iterator it_strict_map = | |
| 917 strict_format_map_.find(mime_type_lower_case); | |
| 918 if (it_strict_map == strict_format_map_.end()) | |
| 919 return codecs.empty() ? MayBeSupported : IsNotSupported; | |
| 920 | |
| 921 if (it_strict_map->second.empty()) { | |
| 922 // We get here if the mimetype does not expect a codecs parameter. | |
| 923 return (codecs.empty() && | |
| 924 IsDefaultCodecSupportedLowerCase(mime_type_lower_case)) | |
| 925 ? IsSupported | |
| 926 : IsNotSupported; | |
| 927 } | |
| 928 | |
| 929 if (codecs.empty()) { | |
| 930 // We get here if the mimetype expects to get a codecs parameter, | |
| 931 // but didn't get one. If |mime_type_lower_case| does not have a default | |
| 932 // codec the best we can do is say "maybe" because we don't have enough | |
| 933 // information. | |
| 934 Codec default_codec = INVALID_CODEC; | |
| 935 if (!GetDefaultCodecLowerCase(mime_type_lower_case, &default_codec)) | |
| 936 return MayBeSupported; | |
| 937 | |
| 938 return IsCodecSupported(default_codec) ? IsSupported : IsNotSupported; | |
| 939 } | |
| 940 | |
| 941 return AreSupportedCodecs(it_strict_map->second, codecs); | |
| 942 } | |
| 943 | |
| 944 void MimeUtil::RemoveProprietaryMediaTypesAndCodecsForTests() { | |
| 945 for (size_t i = 0; i < arraysize(proprietary_media_types); ++i) { | |
| 946 non_image_map_.erase(proprietary_media_types[i]); | |
| 947 media_map_.erase(proprietary_media_types[i]); | |
| 948 } | |
| 949 allow_proprietary_codecs_ = false; | |
| 950 } | |
| 951 | |
| 952 // Returns true iff |profile_str| conforms to hex string "42y0", where y is one | |
| 953 // of [8..F]. Requiring constraint_set0_flag be set and profile_idc be 0x42 is | |
| 954 // taken from ISO-14496-10 7.3.2.1, 7.4.2.1, and Annex A.2.1. | |
| 955 // | |
| 956 // |profile_str| is the first four characters of the H.264 suffix string | |
| 957 // (ignoring the last 2 characters of the full 6 character suffix that are | |
| 958 // level_idc). From ISO-14496-10 7.3.2.1, it consists of: | |
| 959 // 8 bits: profile_idc: required to be 0x42 here. | |
| 960 // 1 bit: constraint_set0_flag : required to be true here. | |
| 961 // 1 bit: constraint_set1_flag : ignored here. | |
| 962 // 1 bit: constraint_set2_flag : ignored here. | |
| 963 // 1 bit: constraint_set3_flag : ignored here. | |
| 964 // 4 bits: reserved : required to be 0 here. | |
| 965 // | |
| 966 // The spec indicates other ways, not implemented here, that a |profile_str| | |
| 967 // can indicate a baseline conforming decoder is sufficient for decode in Annex | |
| 968 // A.2.1: "[profile_idc not necessarily 0x42] with constraint_set0_flag set and | |
| 969 // in which level_idc and constraint_set3_flag represent a level less than or | |
| 970 // equal to the specified level." | |
| 971 static bool IsValidH264BaselineProfile(const std::string& profile_str) { | |
| 972 uint32 constraint_set_bits; | |
| 973 if (profile_str.size() != 4 || | |
| 974 profile_str[0] != '4' || | |
| 975 profile_str[1] != '2' || | |
| 976 profile_str[3] != '0' || | |
| 977 !base::HexStringToUInt(base::StringPiece(profile_str.c_str() + 2, 1), | |
| 978 &constraint_set_bits)) { | |
| 979 return false; | |
| 980 } | |
| 981 | |
| 982 return constraint_set_bits >= 8; | |
| 983 } | |
| 984 | |
| 985 static bool IsValidH264Level(const std::string& level_str) { | |
| 986 uint32 level; | |
| 987 if (level_str.size() != 2 || !base::HexStringToUInt(level_str, &level)) | |
| 988 return false; | |
| 989 | |
| 990 // Valid levels taken from Table A-1 in ISO-14496-10. | |
| 991 // Essentially |level_str| is toHex(10 * level). | |
| 992 return ((level >= 10 && level <= 13) || | |
| 993 (level >= 20 && level <= 22) || | |
| 994 (level >= 30 && level <= 32) || | |
| 995 (level >= 40 && level <= 42) || | |
| 996 (level >= 50 && level <= 51)); | |
| 997 } | |
| 998 | |
| 999 // Handle parsing H.264 codec IDs as outlined in RFC 6381 and ISO-14496-10. | |
| 1000 // avc1.42y0xx, y >= 8 - H.264 Baseline | |
| 1001 // avc1.4D40xx - H.264 Main | |
| 1002 // avc1.6400xx - H.264 High | |
| 1003 // | |
| 1004 // avc1.xxxxxx & avc3.xxxxxx are considered ambiguous forms that are trying to | |
| 1005 // signal H.264 Baseline. For example, the idc_level, profile_idc and | |
| 1006 // constraint_set3_flag pieces may explicitly require decoder to conform to | |
| 1007 // baseline profile at the specified level (see Annex A and constraint_set0 in | |
| 1008 // ISO-14496-10). | |
| 1009 static bool ParseH264CodecID(const std::string& codec_id, | |
| 1010 MimeUtil::Codec* codec, | |
| 1011 bool* is_ambiguous) { | |
| 1012 // Make sure we have avc1.xxxxxx or avc3.xxxxxx | |
| 1013 if (codec_id.size() != 11 || | |
| 1014 (!StartsWithASCII(codec_id, "avc1.", true) && | |
| 1015 !StartsWithASCII(codec_id, "avc3.", true))) { | |
| 1016 return false; | |
| 1017 } | |
| 1018 | |
| 1019 std::string profile = StringToUpperASCII(codec_id.substr(5, 4)); | |
| 1020 if (IsValidH264BaselineProfile(profile)) { | |
| 1021 *codec = MimeUtil::H264_BASELINE; | |
| 1022 } else if (profile == "4D40") { | |
| 1023 *codec = MimeUtil::H264_MAIN; | |
| 1024 } else if (profile == "6400") { | |
| 1025 *codec = MimeUtil::H264_HIGH; | |
| 1026 } else { | |
| 1027 *codec = MimeUtil::H264_BASELINE; | |
| 1028 *is_ambiguous = true; | |
| 1029 return true; | |
| 1030 } | |
| 1031 | |
| 1032 *is_ambiguous = !IsValidH264Level(StringToUpperASCII(codec_id.substr(9))); | |
| 1033 return true; | |
| 1034 } | |
| 1035 | |
| 1036 bool MimeUtil::StringToCodec(const std::string& codec_id, | |
| 1037 Codec* codec, | |
| 1038 bool* is_ambiguous) const { | |
| 1039 StringToCodecMappings::const_iterator itr = | |
| 1040 string_to_codec_map_.find(codec_id); | |
| 1041 if (itr != string_to_codec_map_.end()) { | |
| 1042 *codec = itr->second.codec; | |
| 1043 *is_ambiguous = itr->second.is_ambiguous; | |
| 1044 return true; | |
| 1045 } | |
| 1046 | |
| 1047 // If |codec_id| is not in |string_to_codec_map_|, then we assume that it is | |
| 1048 // an H.264 codec ID because currently those are the only ones that can't be | |
| 1049 // stored in the |string_to_codec_map_| and require parsing. | |
| 1050 return ParseH264CodecID(codec_id, codec, is_ambiguous); | |
| 1051 } | |
| 1052 | |
| 1053 bool MimeUtil::IsCodecSupported(Codec codec) const { | |
| 1054 DCHECK_NE(codec, INVALID_CODEC); | |
| 1055 | |
| 1056 #if defined(OS_ANDROID) | |
| 1057 if (!IsCodecSupportedOnAndroid(codec)) | |
| 1058 return false; | |
| 1059 #endif | |
| 1060 | |
| 1061 return allow_proprietary_codecs_ || !IsCodecProprietary(codec); | |
| 1062 } | |
| 1063 | |
| 1064 bool MimeUtil::IsCodecProprietary(Codec codec) const { | |
| 1065 switch (codec) { | |
| 1066 case INVALID_CODEC: | |
| 1067 case MP3: | |
| 1068 case MPEG2_AAC_LC: | |
| 1069 case MPEG2_AAC_MAIN: | |
| 1070 case MPEG2_AAC_SSR: | |
| 1071 case MPEG4_AAC_LC: | |
| 1072 case MPEG4_AAC_SBR_v1: | |
| 1073 case MPEG4_AAC_SBR_PS_v2: | |
| 1074 case H264_BASELINE: | |
| 1075 case H264_MAIN: | |
| 1076 case H264_HIGH: | |
| 1077 return true; | |
| 1078 | |
| 1079 case PCM: | |
| 1080 case VORBIS: | |
| 1081 case OPUS: | |
| 1082 case VP8: | |
| 1083 case VP9: | |
| 1084 case THEORA: | |
| 1085 return false; | |
| 1086 } | |
| 1087 | |
| 1088 return true; | |
| 1089 } | |
| 1090 | |
| 1091 bool MimeUtil::GetDefaultCodecLowerCase(const std::string& mime_type_lower_case, | |
| 1092 Codec* default_codec) const { | |
| 1093 if (mime_type_lower_case == "audio/mpeg" || | |
| 1094 mime_type_lower_case == "audio/mp3" || | |
| 1095 mime_type_lower_case == "audio/x-mp3") { | |
| 1096 *default_codec = MimeUtil::MP3; | |
| 1097 return true; | |
| 1098 } | |
| 1099 | |
| 1100 return false; | |
| 1101 } | |
| 1102 | |
| 1103 bool MimeUtil::IsDefaultCodecSupportedLowerCase( | |
| 1104 const std::string& mime_type_lower_case) const { | |
| 1105 Codec default_codec = Codec::INVALID_CODEC; | |
| 1106 if (!GetDefaultCodecLowerCase(mime_type_lower_case, &default_codec)) | |
| 1107 return false; | |
| 1108 return IsCodecSupported(default_codec); | |
| 1109 } | |
| 1110 | |
| 1111 //---------------------------------------------------------------------------- | |
| 1112 // Wrappers for the singleton | |
| 1113 //---------------------------------------------------------------------------- | |
| 1114 | |
| 1115 bool GetMimeTypeFromExtension(const base::FilePath::StringType& ext, | |
| 1116 std::string* mime_type) { | |
| 1117 return g_mime_util.Get().GetMimeTypeFromExtension(ext, mime_type); | |
| 1118 } | |
| 1119 | |
| 1120 bool GetMimeTypeFromFile(const base::FilePath& file_path, | |
| 1121 std::string* mime_type) { | |
| 1122 return g_mime_util.Get().GetMimeTypeFromFile(file_path, mime_type); | |
| 1123 } | |
| 1124 | |
| 1125 bool GetWellKnownMimeTypeFromExtension(const base::FilePath::StringType& ext, | |
| 1126 std::string* mime_type) { | |
| 1127 return g_mime_util.Get().GetWellKnownMimeTypeFromExtension(ext, mime_type); | |
| 1128 } | |
| 1129 | |
| 1130 bool GetPreferredExtensionForMimeType(const std::string& mime_type, | |
| 1131 base::FilePath::StringType* extension) { | |
| 1132 return g_mime_util.Get().GetPreferredExtensionForMimeType(mime_type, | |
| 1133 extension); | |
| 1134 } | |
| 1135 | |
| 1136 bool IsSupportedImageMimeType(const std::string& mime_type) { | |
| 1137 return g_mime_util.Get().IsSupportedImageMimeType(mime_type); | |
| 1138 } | |
| 1139 | |
| 1140 bool IsSupportedMediaMimeType(const std::string& mime_type) { | |
| 1141 return g_mime_util.Get().IsSupportedMediaMimeType(mime_type); | |
| 1142 } | |
| 1143 | |
| 1144 bool IsSupportedNonImageMimeType(const std::string& mime_type) { | |
| 1145 return g_mime_util.Get().IsSupportedNonImageMimeType(mime_type); | |
| 1146 } | |
| 1147 | |
| 1148 bool IsUnsupportedTextMimeType(const std::string& mime_type) { | |
| 1149 return g_mime_util.Get().IsUnsupportedTextMimeType(mime_type); | |
| 1150 } | |
| 1151 | |
| 1152 bool IsSupportedJavascriptMimeType(const std::string& mime_type) { | |
| 1153 return g_mime_util.Get().IsSupportedJavascriptMimeType(mime_type); | |
| 1154 } | |
| 1155 | |
| 1156 bool IsSupportedMimeType(const std::string& mime_type) { | |
| 1157 return g_mime_util.Get().IsSupportedMimeType(mime_type); | |
| 1158 } | |
| 1159 | |
| 1160 bool MatchesMimeType(const std::string& mime_type_pattern, | |
| 1161 const std::string& mime_type) { | |
| 1162 return g_mime_util.Get().MatchesMimeType(mime_type_pattern, mime_type); | |
| 1163 } | |
| 1164 | |
| 1165 bool ParseMimeTypeWithoutParameter(const std::string& type_string, | |
| 1166 std::string* top_level_type, | |
| 1167 std::string* subtype) { | |
| 1168 return g_mime_util.Get().ParseMimeTypeWithoutParameter( | |
| 1169 type_string, top_level_type, subtype); | |
| 1170 } | |
| 1171 | |
| 1172 bool IsValidTopLevelMimeType(const std::string& type_string) { | |
| 1173 return g_mime_util.Get().IsValidTopLevelMimeType(type_string); | |
| 1174 } | |
| 1175 | |
| 1176 bool AreSupportedMediaCodecs(const std::vector<std::string>& codecs) { | |
| 1177 return g_mime_util.Get().AreSupportedMediaCodecs(codecs); | |
| 1178 } | |
| 1179 | |
| 1180 bool IsStrictMediaMimeType(const std::string& mime_type) { | |
| 1181 return g_mime_util.Get().IsStrictMediaMimeType(mime_type); | |
| 1182 } | |
| 1183 | |
| 1184 SupportsType IsSupportedStrictMediaMimeType( | |
| 1185 const std::string& mime_type, | |
| 1186 const std::vector<std::string>& codecs) { | |
| 1187 return g_mime_util.Get().IsSupportedStrictMediaMimeType(mime_type, codecs); | |
| 1188 } | |
| 1189 | |
| 1190 void ParseCodecString(const std::string& codecs, | |
| 1191 std::vector<std::string>* codecs_out, | |
| 1192 const bool strip) { | |
| 1193 g_mime_util.Get().ParseCodecString(codecs, codecs_out, strip); | |
| 1194 } | |
| 1195 | |
| 1196 namespace { | |
| 1197 | |
| 1198 // From http://www.w3schools.com/media/media_mimeref.asp and | |
| 1199 // http://plugindoc.mozdev.org/winmime.php | |
| 1200 static const char* const kStandardImageTypes[] = { | |
| 1201 "image/bmp", | |
| 1202 "image/cis-cod", | |
| 1203 "image/gif", | |
| 1204 "image/ief", | |
| 1205 "image/jpeg", | |
| 1206 "image/webp", | |
| 1207 "image/pict", | |
| 1208 "image/pipeg", | |
| 1209 "image/png", | |
| 1210 "image/svg+xml", | |
| 1211 "image/tiff", | |
| 1212 "image/vnd.microsoft.icon", | |
| 1213 "image/x-cmu-raster", | |
| 1214 "image/x-cmx", | |
| 1215 "image/x-icon", | |
| 1216 "image/x-portable-anymap", | |
| 1217 "image/x-portable-bitmap", | |
| 1218 "image/x-portable-graymap", | |
| 1219 "image/x-portable-pixmap", | |
| 1220 "image/x-rgb", | |
| 1221 "image/x-xbitmap", | |
| 1222 "image/x-xpixmap", | |
| 1223 "image/x-xwindowdump" | |
| 1224 }; | |
| 1225 static const char* const kStandardAudioTypes[] = { | |
| 1226 "audio/aac", | |
| 1227 "audio/aiff", | |
| 1228 "audio/amr", | |
| 1229 "audio/basic", | |
| 1230 "audio/midi", | |
| 1231 "audio/mp3", | |
| 1232 "audio/mp4", | |
| 1233 "audio/mpeg", | |
| 1234 "audio/mpeg3", | |
| 1235 "audio/ogg", | |
| 1236 "audio/vorbis", | |
| 1237 "audio/wav", | |
| 1238 "audio/webm", | |
| 1239 "audio/x-m4a", | |
| 1240 "audio/x-ms-wma", | |
| 1241 "audio/vnd.rn-realaudio", | |
| 1242 "audio/vnd.wave" | |
| 1243 }; | |
| 1244 static const char* const kStandardVideoTypes[] = { | |
| 1245 "video/avi", | |
| 1246 "video/divx", | |
| 1247 "video/flc", | |
| 1248 "video/mp4", | |
| 1249 "video/mpeg", | |
| 1250 "video/ogg", | |
| 1251 "video/quicktime", | |
| 1252 "video/sd-video", | |
| 1253 "video/webm", | |
| 1254 "video/x-dv", | |
| 1255 "video/x-m4v", | |
| 1256 "video/x-mpeg", | |
| 1257 "video/x-ms-asf", | |
| 1258 "video/x-ms-wmv" | |
| 1259 }; | |
| 1260 | |
| 1261 struct StandardType { | |
| 1262 const char* const leading_mime_type; | |
| 1263 const char* const* standard_types; | |
| 1264 size_t standard_types_len; | |
| 1265 }; | |
| 1266 static const StandardType kStandardTypes[] = { | |
| 1267 { "image/", kStandardImageTypes, arraysize(kStandardImageTypes) }, | |
| 1268 { "audio/", kStandardAudioTypes, arraysize(kStandardAudioTypes) }, | |
| 1269 { "video/", kStandardVideoTypes, arraysize(kStandardVideoTypes) }, | |
| 1270 { NULL, NULL, 0 } | |
| 1271 }; | |
| 1272 | |
| 1273 void GetExtensionsFromHardCodedMappings( | |
| 1274 const MimeInfo* mappings, | |
| 1275 size_t mappings_len, | |
| 1276 const std::string& leading_mime_type, | |
| 1277 base::hash_set<base::FilePath::StringType>* extensions) { | |
| 1278 base::FilePath::StringType extension; | |
| 1279 for (size_t i = 0; i < mappings_len; ++i) { | |
| 1280 if (StartsWithASCII(mappings[i].mime_type, leading_mime_type, false)) { | |
| 1281 std::vector<string> this_extensions; | |
| 1282 base::SplitString(mappings[i].extensions, ',', &this_extensions); | |
| 1283 for (size_t j = 0; j < this_extensions.size(); ++j) { | |
| 1284 #if defined(OS_WIN) | |
| 1285 base::FilePath::StringType extension( | |
| 1286 base::UTF8ToWide(this_extensions[j])); | |
| 1287 #else | |
| 1288 base::FilePath::StringType extension(this_extensions[j]); | |
| 1289 #endif | |
| 1290 extensions->insert(extension); | |
| 1291 } | |
| 1292 } | |
| 1293 } | |
| 1294 } | |
| 1295 | |
| 1296 void GetExtensionsHelper( | |
| 1297 const char* const* standard_types, | |
| 1298 size_t standard_types_len, | |
| 1299 const std::string& leading_mime_type, | |
| 1300 base::hash_set<base::FilePath::StringType>* extensions) { | |
| 1301 for (size_t i = 0; i < standard_types_len; ++i) { | |
| 1302 g_mime_util.Get().GetPlatformExtensionsForMimeType(standard_types[i], | |
| 1303 extensions); | |
| 1304 } | |
| 1305 | |
| 1306 // Also look up the extensions from hard-coded mappings in case that some | |
| 1307 // supported extensions are not registered in the system registry, like ogg. | |
| 1308 GetExtensionsFromHardCodedMappings(primary_mappings, | |
| 1309 arraysize(primary_mappings), | |
| 1310 leading_mime_type, | |
| 1311 extensions); | |
| 1312 | |
| 1313 GetExtensionsFromHardCodedMappings(secondary_mappings, | |
| 1314 arraysize(secondary_mappings), | |
| 1315 leading_mime_type, | |
| 1316 extensions); | |
| 1317 } | |
| 1318 | |
| 1319 // Note that the elements in the source set will be appended to the target | |
| 1320 // vector. | |
| 1321 template<class T> | |
| 1322 void HashSetToVector(base::hash_set<T>* source, std::vector<T>* target) { | |
| 1323 size_t old_target_size = target->size(); | |
| 1324 target->resize(old_target_size + source->size()); | |
| 1325 size_t i = 0; | |
| 1326 for (typename base::hash_set<T>::iterator iter = source->begin(); | |
| 1327 iter != source->end(); ++iter, ++i) | |
| 1328 (*target)[old_target_size + i] = *iter; | |
| 1329 } | |
| 1330 | |
| 1331 } // namespace | |
| 1332 | |
| 1333 void GetExtensionsForMimeType( | |
| 1334 const std::string& unsafe_mime_type, | |
| 1335 std::vector<base::FilePath::StringType>* extensions) { | |
| 1336 if (unsafe_mime_type == "*/*" || unsafe_mime_type == "*") | |
| 1337 return; | |
| 1338 | |
| 1339 const std::string mime_type = base::StringToLowerASCII(unsafe_mime_type); | |
| 1340 base::hash_set<base::FilePath::StringType> unique_extensions; | |
| 1341 | |
| 1342 if (EndsWith(mime_type, "/*", false)) { | |
| 1343 std::string leading_mime_type = mime_type.substr(0, mime_type.length() - 1); | |
| 1344 | |
| 1345 // Find the matching StandardType from within kStandardTypes, or fall | |
| 1346 // through to the last (default) StandardType. | |
| 1347 const StandardType* type = NULL; | |
| 1348 for (size_t i = 0; i < arraysize(kStandardTypes); ++i) { | |
| 1349 type = &(kStandardTypes[i]); | |
| 1350 if (type->leading_mime_type && | |
| 1351 leading_mime_type == type->leading_mime_type) | |
| 1352 break; | |
| 1353 } | |
| 1354 DCHECK(type); | |
| 1355 GetExtensionsHelper(type->standard_types, | |
| 1356 type->standard_types_len, | |
| 1357 leading_mime_type, | |
| 1358 &unique_extensions); | |
| 1359 } else { | |
| 1360 g_mime_util.Get().GetPlatformExtensionsForMimeType(mime_type, | |
| 1361 &unique_extensions); | |
| 1362 | |
| 1363 // Also look up the extensions from hard-coded mappings in case that some | |
| 1364 // supported extensions are not registered in the system registry, like ogg. | |
| 1365 GetExtensionsFromHardCodedMappings(primary_mappings, | |
| 1366 arraysize(primary_mappings), | |
| 1367 mime_type, | |
| 1368 &unique_extensions); | |
| 1369 | |
| 1370 GetExtensionsFromHardCodedMappings(secondary_mappings, | |
| 1371 arraysize(secondary_mappings), | |
| 1372 mime_type, | |
| 1373 &unique_extensions); | |
| 1374 } | |
| 1375 | |
| 1376 HashSetToVector(&unique_extensions, extensions); | |
| 1377 } | |
| 1378 | |
| 1379 void RemoveProprietaryMediaTypesAndCodecsForTests() { | |
| 1380 g_mime_util.Get().RemoveProprietaryMediaTypesAndCodecsForTests(); | |
| 1381 } | |
| 1382 | |
| 1383 CertificateMimeType GetCertificateMimeTypeForMimeType( | |
| 1384 const std::string& mime_type) { | |
| 1385 // Don't create a map, there is only one entry in the table, | |
| 1386 // except on Android. | |
| 1387 for (size_t i = 0; i < arraysize(supported_certificate_types); ++i) { | |
| 1388 if (base::strcasecmp(mime_type.c_str(), | |
| 1389 net::supported_certificate_types[i].mime_type) == 0) { | |
| 1390 return net::supported_certificate_types[i].cert_type; | |
| 1391 } | |
| 1392 } | |
| 1393 return CERTIFICATE_MIME_TYPE_UNKNOWN; | |
| 1394 } | |
| 1395 | |
| 1396 bool IsSupportedCertificateMimeType(const std::string& mime_type) { | |
| 1397 CertificateMimeType file_type = | |
| 1398 GetCertificateMimeTypeForMimeType(mime_type); | |
| 1399 return file_type != CERTIFICATE_MIME_TYPE_UNKNOWN; | |
| 1400 } | |
| 1401 | |
| 1402 void AddMultipartValueForUpload(const std::string& value_name, | |
| 1403 const std::string& value, | |
| 1404 const std::string& mime_boundary, | |
| 1405 const std::string& content_type, | |
| 1406 std::string* post_data) { | |
| 1407 DCHECK(post_data); | |
| 1408 // First line is the boundary. | |
| 1409 post_data->append("--" + mime_boundary + "\r\n"); | |
| 1410 // Next line is the Content-disposition. | |
| 1411 post_data->append("Content-Disposition: form-data; name=\"" + | |
| 1412 value_name + "\"\r\n"); | |
| 1413 if (!content_type.empty()) { | |
| 1414 // If Content-type is specified, the next line is that. | |
| 1415 post_data->append("Content-Type: " + content_type + "\r\n"); | |
| 1416 } | |
| 1417 // Leave an empty line and append the value. | |
| 1418 post_data->append("\r\n" + value + "\r\n"); | |
| 1419 } | |
| 1420 | |
| 1421 void AddMultipartFinalDelimiterForUpload(const std::string& mime_boundary, | |
| 1422 std::string* post_data) { | |
| 1423 DCHECK(post_data); | |
| 1424 post_data->append("--" + mime_boundary + "--\r\n"); | |
| 1425 } | |
| 1426 | |
| 1427 } // namespace net | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 992733002:
Remove //net (except for Android test stuff) and sdch (Closed)
Base URL: git@github.com:domokit/mojo.git@master