1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package eu.siacs.conversations.utils;
17import android.content.Context;
18import android.net.Uri;
19import android.os.Build;
20import android.util.Log;
21
22import java.io.File;
23import java.io.FileInputStream;
24import java.io.IOException;
25import java.io.InputStream;
26import java.net.URL;
27import java.util.HashMap;
28import java.util.Map;
29import java.util.Properties;
30
31import eu.siacs.conversations.Config;
32import eu.siacs.conversations.entities.Transferable;
33import eu.siacs.conversations.services.ExportBackupService;
34
35/**
36 * Utilities for dealing with MIME types.
37 * Used to implement java.net.URLConnection and android.webkit.MimeTypeMap.
38 */
39public final class MimeUtils {
40 private static final Map<String, String> mimeTypeToExtensionMap = new HashMap<>();
41 private static final Map<String, String> extensionToMimeTypeMap = new HashMap<>();
42 static {
43 // The following table is based on /etc/mime.types data minus
44 // chemical/* MIME types and MIME types that don't map to any
45 // file extensions. We also exclude top-level domain names to
46 // deal with cases like:
47 //
48 // mail.google.com/a/google.com
49 //
50 // and "active" MIME types (due to potential security issues).
51 // Note that this list is _not_ in alphabetical order and must not be sorted.
52 // The "most popular" extension must come first, so that it's the one returned
53 // by guessExtensionFromMimeType.
54 add("application/andrew-inset", "ez");
55 add("application/dsptype", "tsp");
56 add("application/epub+zip","epub");
57 add("application/hta", "hta");
58 add("application/mac-binhex40", "hqx");
59 add("application/mathematica", "nb");
60 add("application/msaccess", "mdb");
61 add("application/oda", "oda");
62 add("application/ogg", "ogg");
63 add("application/pdf", "pdf");
64 add("application/pgp-keys", "key");
65 add("application/pgp-signature", "pgp");
66 add("application/pics-rules", "prf");
67 add("application/pkix-cert", "cer");
68 add("application/rar", "rar");
69 add("application/rdf+xml", "rdf");
70 add("application/rss+xml", "rss");
71 add("application/zip", "zip");
72 add("application/vnd.amazon.mobi8-ebook","azw3");
73 add("application/vnd.amazon.mobi8-ebook","azw");
74 add("application/vnd.amazon.mobi8-ebook","kfx");
75 add("application/vnd.android.package-archive", "apk");
76 add("application/vnd.cinderella", "cdy");
77 add(ExportBackupService.MIME_TYPE, "ceb");
78 add("application/vnd.ms-pki.stl", "stl");
79 add("application/vnd.oasis.opendocument.database", "odb");
80 add("application/vnd.oasis.opendocument.formula", "odf");
81 add("application/vnd.oasis.opendocument.graphics", "odg");
82 add("application/vnd.oasis.opendocument.graphics-template", "otg");
83 add("application/vnd.oasis.opendocument.image", "odi");
84 add("application/vnd.oasis.opendocument.spreadsheet", "ods");
85 add("application/vnd.oasis.opendocument.spreadsheet-template", "ots");
86 add("application/vnd.oasis.opendocument.text", "odt");
87 add("application/vnd.oasis.opendocument.text-master", "odm");
88 add("application/vnd.oasis.opendocument.text-template", "ott");
89 add("application/vnd.oasis.opendocument.text-web", "oth");
90 add("application/vnd.google-earth.kml+xml", "kml");
91 add("application/vnd.google-earth.kmz", "kmz");
92 add("application/msword", "doc");
93 add("application/msword", "dot");
94 add("application/vnd.openxmlformats-officedocument.wordprocessingml.document", "docx");
95 add("application/vnd.openxmlformats-officedocument.wordprocessingml.template", "dotx");
96 add("application/vnd.ms-excel", "xls");
97 add("application/vnd.ms-excel", "xlt");
98 add("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "xlsx");
99 add("application/vnd.openxmlformats-officedocument.spreadsheetml.template", "xltx");
100 add("application/vnd.ms-powerpoint", "ppt");
101 add("application/vnd.ms-powerpoint", "pot");
102 add("application/vnd.ms-powerpoint", "pps");
103 add("application/vnd.openxmlformats-officedocument.presentationml.presentation", "pptx");
104 add("application/vnd.openxmlformats-officedocument.presentationml.template", "potx");
105 add("application/vnd.openxmlformats-officedocument.presentationml.slideshow", "ppsx");
106 add("application/vnd.rim.cod", "cod");
107 add("application/vnd.smaf", "mmf");
108 add("application/vnd.stardivision.calc", "sdc");
109 add("application/vnd.stardivision.draw", "sda");
110 add("application/vnd.stardivision.impress", "sdd");
111 add("application/vnd.stardivision.impress", "sdp");
112 add("application/vnd.stardivision.math", "smf");
113 add("application/vnd.stardivision.writer", "sdw");
114 add("application/vnd.stardivision.writer", "vor");
115 add("application/vnd.stardivision.writer-global", "sgl");
116 add("application/vnd.sun.xml.calc", "sxc");
117 add("application/vnd.sun.xml.calc.template", "stc");
118 add("application/vnd.sun.xml.draw", "sxd");
119 add("application/vnd.sun.xml.draw.template", "std");
120 add("application/vnd.sun.xml.impress", "sxi");
121 add("application/vnd.sun.xml.impress.template", "sti");
122 add("application/vnd.sun.xml.math", "sxm");
123 add("application/vnd.sun.xml.writer", "sxw");
124 add("application/vnd.sun.xml.writer.global", "sxg");
125 add("application/vnd.sun.xml.writer.template", "stw");
126 add("application/vnd.visio", "vsd");
127 add("application/x-abiword", "abw");
128 add("application/x-apple-diskimage", "dmg");
129 add("application/x-bcpio", "bcpio");
130 add("application/x-bittorrent", "torrent");
131 add("application/x-cdf", "cdf");
132 add("application/x-cdlink", "vcd");
133 add("application/x-chess-pgn", "pgn");
134 add("application/x-cpio", "cpio");
135 add("application/x-debian-package", "deb");
136 add("application/x-debian-package", "udeb");
137 add("application/x-director", "dcr");
138 add("application/x-director", "dir");
139 add("application/x-director", "dxr");
140 add("application/x-dms", "dms");
141 add("application/x-doom", "wad");
142 add("application/x-dvi", "dvi");
143 add("application/x-font", "pfa");
144 add("application/x-font", "pfb");
145 add("application/x-font", "gsf");
146 add("application/x-font", "pcf");
147 add("application/x-font", "pcf.Z");
148 add("application/x-freemind", "mm");
149 // application/futuresplash isn't IANA, so application/x-futuresplash should come first.
150 add("application/x-futuresplash", "spl");
151 add("application/futuresplash", "spl");
152 add("application/x-gnumeric", "gnumeric");
153 add("application/x-go-sgf", "sgf");
154 add("application/x-graphing-calculator", "gcf");
155 add("application/x-gtar", "tgz");
156 add("application/x-gtar", "gtar");
157 add("application/x-gtar", "taz");
158 add("application/x-hdf", "hdf");
159 add("application/x-ica", "ica");
160 add("application/x-internet-signup", "ins");
161 add("application/x-internet-signup", "isp");
162 add("application/x-iphone", "iii");
163 add("application/x-iso9660-image", "iso");
164 add("application/x-jmol", "jmz");
165 add("application/x-kchart", "chrt");
166 add("application/x-killustrator", "kil");
167 add("application/x-koan", "skp");
168 add("application/x-koan", "skd");
169 add("application/x-koan", "skt");
170 add("application/x-koan", "skm");
171 add("application/x-kpresenter", "kpr");
172 add("application/x-kpresenter", "kpt");
173 add("application/x-kspread", "ksp");
174 add("application/x-kword", "kwd");
175 add("application/x-kword", "kwt");
176 add("application/x-latex", "latex");
177 add("application/x-lha", "lha");
178 add("application/x-lzh", "lzh");
179 add("application/x-lzx", "lzx");
180 add("application/x-maker", "frm");
181 add("application/x-maker", "maker");
182 add("application/x-maker", "frame");
183 add("application/x-maker", "fb");
184 add("application/x-maker", "book");
185 add("application/x-maker", "fbdoc");
186 add("application/x-mif", "mif");
187 add("application/x-mobipocket-ebook","mobi");
188 add("application/x-ms-wmd", "wmd");
189 add("application/x-ms-wmz", "wmz");
190 add("application/x-msi", "msi");
191 add("application/x-ns-proxy-autoconfig", "pac");
192 add("application/x-nwc", "nwc");
193 add("application/x-object", "o");
194 add("application/x-oz-application", "oza");
195 add("application/x-pem-file", "pem");
196 add("application/x-pkcs12", "p12");
197 add("application/x-pkcs12", "pfx");
198 add("application/x-pkcs7-certreqresp", "p7r");
199 add("application/x-pkcs7-crl", "crl");
200 add("application/x-quicktimeplayer", "qtl");
201 add("application/x-shar", "shar");
202 add("application/x-shockwave-flash", "swf");
203 add("application/x-stuffit", "sit");
204 add("application/x-sv4cpio", "sv4cpio");
205 add("application/x-sv4crc", "sv4crc");
206 add("application/x-tar", "tar");
207 add("application/x-texinfo", "texinfo");
208 add("application/x-texinfo", "texi");
209 add("application/x-troff", "t");
210 add("application/x-troff", "roff");
211 add("application/x-troff-man", "man");
212 add("application/x-ustar", "ustar");
213 add("application/x-wais-source", "src");
214 add("application/x-wingz", "wz");
215 add("application/x-webarchive", "webarchive");
216 add("application/x-webarchive-xml", "webarchivexml");
217 add("application/x-x509-ca-cert", "crt");
218 add("application/x-x509-user-cert", "crt");
219 add("application/x-x509-server-cert", "crt");
220 add("application/x-xcf", "xcf");
221 add("application/x-xfig", "fig");
222 add("application/xhtml+xml", "xhtml");
223 add("audio/3gpp", "3gpp");
224 add("audio/aac", "aac");
225 add("audio/aac-adts", "aac");
226 add("audio/amr", "amr");
227 add("audio/amr-wb", "awb");
228 add("audio/basic", "snd");
229 add("audio/flac", "flac");
230 add("application/x-flac", "flac");
231 add("audio/imelody", "imy");
232 add("audio/midi", "mid");
233 add("audio/midi", "midi");
234 add("audio/midi", "ota");
235 add("audio/midi", "kar");
236 add("audio/midi", "rtttl");
237 add("audio/midi", "xmf");
238 add("audio/mobile-xmf", "mxmf");
239 // add ".mp3" first so it will be the default for guessExtensionFromMimeType
240 add("audio/mpeg", "mp3");
241 add("audio/mpeg", "mpga");
242 add("audio/mpeg", "mpega");
243 add("audio/mpeg", "mp2");
244 add("audio/mpeg", "m4a");
245 add("audio/mpegurl", "m3u");
246 add("audio/ogg","oga");
247 add("audio/prs.sid", "sid");
248 add("audio/x-aiff", "aif");
249 add("audio/x-aiff", "aiff");
250 add("audio/x-aiff", "aifc");
251 add("audio/x-gsm", "gsm");
252 add("audio/x-matroska", "mka");
253 add("audio/x-mpegurl", "m3u");
254 add("audio/x-ms-wma", "wma");
255 add("audio/x-ms-wax", "wax");
256 add("audio/x-pn-realaudio", "ra");
257 add("audio/x-pn-realaudio", "rm");
258 add("audio/x-pn-realaudio", "ram");
259 add("audio/x-realaudio", "ra");
260 add("audio/x-scpls", "pls");
261 add("audio/x-sd2", "sd2");
262 add("audio/x-wav", "wav");
263 // image/bmp isn't IANA, so image/x-ms-bmp should come first.
264 add("image/x-ms-bmp", "bmp");
265 add("image/bmp", "bmp");
266 add("image/gif", "gif");
267 // image/ico isn't IANA, so image/x-icon should come first.
268 add("image/x-icon", "ico");
269 add("image/ico", "cur");
270 add("image/ico", "ico");
271 add("image/ief", "ief");
272 add("image/heic","heic");
273 // add ".jpg" first so it will be the default for guessExtensionFromMimeType
274 add("image/jpeg", "jpg");
275 add("image/jpeg", "jpeg");
276 add("image/jpeg", "jpe");
277 add("image/pcx", "pcx");
278 add("image/png", "png");
279 add("image/svg+xml", "svg");
280 add("image/svg+xml", "svgz");
281 add("image/tiff", "tiff");
282 add("image/tiff", "tif");
283 add("image/vnd.djvu", "djvu");
284 add("image/vnd.djvu", "djv");
285 add("image/vnd.wap.wbmp", "wbmp");
286 add("image/webp", "webp");
287 add("image/x-cmu-raster", "ras");
288 add("image/x-coreldraw", "cdr");
289 add("image/x-coreldrawpattern", "pat");
290 add("image/x-coreldrawtemplate", "cdt");
291 add("image/x-corelphotopaint", "cpt");
292 add("image/x-jg", "art");
293 add("image/x-jng", "jng");
294 add("image/x-photoshop", "psd");
295 add("image/x-portable-anymap", "pnm");
296 add("image/x-portable-bitmap", "pbm");
297 add("image/x-portable-graymap", "pgm");
298 add("image/x-portable-pixmap", "ppm");
299 add("image/x-rgb", "rgb");
300 add("image/x-xbitmap", "xbm");
301 add("image/x-xpixmap", "xpm");
302 add("image/x-xwindowdump", "xwd");
303 add("model/iges", "igs");
304 add("model/iges", "iges");
305 add("model/mesh", "msh");
306 add("model/mesh", "mesh");
307 add("model/mesh", "silo");
308 add("text/calendar", "ics");
309 add("text/calendar", "icz");
310 add("text/comma-separated-values", "csv");
311 add("text/css", "css");
312 add("text/html", "htm");
313 add("text/html", "html");
314 add("text/h323", "323");
315 add("text/iuls", "uls");
316 add("text/mathml", "mml");
317 // add ".txt" first so it will be the default for guessExtensionFromMimeType
318 add("text/plain", "txt");
319 add("text/plain", "asc");
320 add("text/plain", "text");
321 add("text/plain", "diff");
322 add("text/plain", "po"); // reserve "pot" for vnd.ms-powerpoint
323 add("text/richtext", "rtx");
324 add("text/rtf", "rtf");
325 add("text/text", "phps");
326 add("text/tab-separated-values", "tsv");
327 add("text/xml", "xml");
328 add("text/x-bibtex", "bib");
329 add("text/x-boo", "boo");
330 add("text/x-c++hdr", "hpp");
331 add("text/x-c++hdr", "h++");
332 add("text/x-c++hdr", "hxx");
333 add("text/x-c++hdr", "hh");
334 add("text/x-c++src", "cpp");
335 add("text/x-c++src", "c++");
336 add("text/x-c++src", "cc");
337 add("text/x-c++src", "cxx");
338 add("text/x-chdr", "h");
339 add("text/x-component", "htc");
340 add("text/x-csh", "csh");
341 add("text/x-csrc", "c");
342 add("text/x-dsrc", "d");
343 add("text/x-haskell", "hs");
344 add("text/x-java", "java");
345 add("text/x-literate-haskell", "lhs");
346 add("text/x-moc", "moc");
347 add("text/x-pascal", "p");
348 add("text/x-pascal", "pas");
349 add("text/x-pcs-gcd", "gcd");
350 add("text/x-setext", "etx");
351 add("text/x-tcl", "tcl");
352 add("text/x-tex", "tex");
353 add("text/x-tex", "ltx");
354 add("text/x-tex", "sty");
355 add("text/x-tex", "cls");
356 add("text/x-vcalendar", "vcs");
357 add("text/x-vcard", "vcf");
358 add("video/3gpp", "3gpp");
359 add("video/3gpp", "3gp");
360 add("video/3gpp2", "3gpp2");
361 add("video/3gpp2", "3g2");
362 add("video/avi", "avi");
363 add("video/dl", "dl");
364 add("video/dv", "dif");
365 add("video/dv", "dv");
366 add("video/fli", "fli");
367 add("video/m4v", "m4v");
368 add("video/mp2ts", "ts");
369 add("video/ogg","ogv");
370 add("video/mpeg", "mpeg");
371 add("video/mpeg", "mpg");
372 add("video/mpeg", "mpe");
373 add("video/mp4", "mp4");
374 add("video/mpeg", "VOB");
375 add("video/quicktime", "qt");
376 add("video/quicktime", "mov");
377 add("video/vnd.mpegurl", "mxu");
378 add("video/webm", "webm");
379 add("video/x-la-asf", "lsf");
380 add("video/x-la-asf", "lsx");
381 add("video/x-matroska", "mkv");
382 add("video/x-mng", "mng");
383 add("video/x-ms-asf", "asf");
384 add("video/x-ms-asf", "asx");
385 add("video/x-ms-wm", "wm");
386 add("video/x-ms-wmv", "wmv");
387 add("video/x-ms-wmx", "wmx");
388 add("video/x-ms-wvx", "wvx");
389 add("video/x-sgi-movie", "movie");
390 add("video/x-webex", "wrf");
391 add("x-conference/x-cooltalk", "ice");
392 add("x-epoc/x-sisx-app", "sisx");
393 applyOverrides();
394 }
395 private static void add(String mimeType, String extension) {
396 // If we have an existing x -> y mapping, we do not want to
397 // override it with another mapping x -> y2.
398 // If a mime type maps to several extensions
399 // the first extension added is considered the most popular
400 // so we do not want to overwrite it later.
401 if (!mimeTypeToExtensionMap.containsKey(mimeType)) {
402 mimeTypeToExtensionMap.put(mimeType, extension);
403 }
404 if (!extensionToMimeTypeMap.containsKey(extension)) {
405 extensionToMimeTypeMap.put(extension, mimeType);
406 }
407 }
408 private static InputStream getContentTypesPropertiesStream() {
409 // User override?
410 String userTable = System.getProperty("content.types.user.table");
411 if (userTable != null) {
412 File f = new File(userTable);
413 if (f.exists()) {
414 try {
415 return new FileInputStream(f);
416 } catch (IOException ignored) {
417 }
418 }
419 }
420 // Standard location?
421 File f = new File(System.getProperty("java.home"), "lib" + File.separator + "content-types.properties");
422 if (f.exists()) {
423 try {
424 return new FileInputStream(f);
425 } catch (IOException ignored) {
426 }
427 }
428 return null;
429 }
430 /**
431 * This isn't what the RI does. The RI doesn't have hard-coded defaults, so supplying your
432 * own "content.types.user.table" means you don't get any of the built-ins, and the built-ins
433 * come from "$JAVA_HOME/lib/content-types.properties".
434 */
435 private static void applyOverrides() {
436 // Get the appropriate InputStream to read overrides from, if any.
437 InputStream stream = getContentTypesPropertiesStream();
438 if (stream == null) {
439 return;
440 }
441 try {
442 try {
443 // Read the properties file...
444 Properties overrides = new Properties();
445 overrides.load(stream);
446 // And translate its mapping to ours...
447 for (Map.Entry<Object, Object> entry : overrides.entrySet()) {
448 String extension = (String) entry.getKey();
449 String mimeType = (String) entry.getValue();
450 add(mimeType, extension);
451 }
452 } finally {
453 stream.close();
454 }
455 } catch (IOException ignored) {
456 }
457 }
458 private MimeUtils() {
459 }
460 /**
461 * Returns true if the given MIME type has an entry in the map.
462 * @param mimeType A MIME type (i.e. text/plain)
463 * @return True iff there is a mimeType entry in the map.
464 */
465 public static boolean hasMimeType(String mimeType) {
466 if (mimeType == null || mimeType.isEmpty()) {
467 return false;
468 }
469 return mimeTypeToExtensionMap.containsKey(mimeType);
470 }
471 /**
472 * Returns the MIME type for the given extension.
473 * @param extension A file extension without the leading '.'
474 * @return The MIME type for the given extension or null iff there is none.
475 */
476 public static String guessMimeTypeFromExtension(String extension) {
477 if (extension == null || extension.isEmpty()) {
478 return null;
479 }
480 return extensionToMimeTypeMap.get(extension.toLowerCase());
481 }
482 /**
483 * Returns true if the given extension has a registered MIME type.
484 * @param extension A file extension without the leading '.'
485 * @return True iff there is an extension entry in the map.
486 */
487 public static boolean hasExtension(String extension) {
488 if (extension == null || extension.isEmpty()) {
489 return false;
490 }
491 return extensionToMimeTypeMap.containsKey(extension);
492 }
493 /**
494 * Returns the registered extension for the given MIME type. Note that some
495 * MIME types map to multiple extensions. This call will return the most
496 * common extension for the given MIME type.
497 * @param mimeType A MIME type (i.e. text/plain)
498 * @return The extension for the given MIME type or null iff there is none.
499 */
500 public static String guessExtensionFromMimeType(String mimeType) {
501 if (mimeType == null || mimeType.isEmpty()) {
502 return null;
503 }
504 return mimeTypeToExtensionMap.get(mimeType.split(";")[0]);
505 }
506
507 public static String guessMimeTypeFromUriAndMime(final Context context, final Uri uri, final String mime) {
508 Log.d(Config.LOGTAG,"guessMimeTypeFromUriAndMime "+uri+" and mime="+mime);
509 if (mime == null || mime.equals("application/octet-stream")) {
510 final String guess = guessMimeTypeFromUri(context, uri);
511 if (guess != null) {
512 return guess;
513 } else {
514 return mime;
515 }
516 }
517 return guessMimeTypeFromUri(context ,uri);
518 }
519
520 public static String guessMimeTypeFromUri(Context context, Uri uri) {
521 // try the content resolver
522 String mimeType;
523 try {
524 mimeType = context.getContentResolver().getType(uri);
525 } catch (Throwable throwable) {
526 mimeType = null;
527 }
528 // try the extension
529 if ((mimeType == null || mimeType.equals("application/octet-stream")) && uri.getPath() != null) {
530 String path = uri.getPath();
531 int start = path.lastIndexOf('.') + 1;
532 if (start < path.length()) {
533 final String guess = MimeUtils.guessMimeTypeFromExtension(path.substring(start));
534 if (guess != null) {
535 mimeType = guess;
536 }
537 }
538 }
539 // sometimes this works (as with the commit content api)
540 if (mimeType == null) {
541 mimeType = uri.getQueryParameter("mimeType");
542 }
543 return mimeType;
544 }
545
546 public static String extractRelevantExtension(URL url) {
547 String path = url.getPath();
548 return extractRelevantExtension(path, true);
549 }
550
551 public static String extractRelevantExtension(final String path) {
552 return extractRelevantExtension(path, false);
553 }
554
555 public static String extractRelevantExtension(final String path, final boolean ignoreCryptoExtension) {
556 if (path == null || path.isEmpty()) {
557 return null;
558 }
559
560 String filename = path.substring(path.lastIndexOf('/') + 1).toLowerCase();
561 int dotPosition = filename.lastIndexOf(".");
562
563 if (dotPosition != -1) {
564 String extension = filename.substring(dotPosition + 1);
565 // we want the real file extension, not the crypto one
566 if (ignoreCryptoExtension && Transferable.VALID_CRYPTO_EXTENSIONS.contains(extension)) {
567 return extractRelevantExtension(filename.substring(0,dotPosition));
568 } else {
569 return extension;
570 }
571 }
572 return null;
573 }
574}