548 lines
23 KiB
Java
548 lines
23 KiB
Java
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package eu.siacs.conversations.utils;
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import android.content.Context;
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import android.net.Uri;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.URL;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Properties;
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import eu.siacs.conversations.entities.Transferable;
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/**
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* Utilities for dealing with MIME types.
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* Used to implement java.net.URLConnection and android.webkit.MimeTypeMap.
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*/
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public final class MimeUtils {
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private static final Map<String, String> mimeTypeToExtensionMap = new HashMap<>();
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private static final Map<String, String> extensionToMimeTypeMap = new HashMap<>();
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static {
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// The following table is based on /etc/mime.types data minus
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// chemical/* MIME types and MIME types that don't map to any
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// file extensions. We also exclude top-level domain names to
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// deal with cases like:
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//
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// mail.google.com/a/google.com
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//
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// and "active" MIME types (due to potential security issues).
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// Note that this list is _not_ in alphabetical order and must not be sorted.
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// The "most popular" extension must come first, so that it's the one returned
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// by guessExtensionFromMimeType.
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add("application/andrew-inset", "ez");
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add("application/dsptype", "tsp");
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add("application/hta", "hta");
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add("application/mac-binhex40", "hqx");
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add("application/mathematica", "nb");
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add("application/msaccess", "mdb");
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add("application/oda", "oda");
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add("application/ogg", "ogg");
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add("application/pdf", "pdf");
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add("application/pgp-keys", "key");
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add("application/pgp-signature", "pgp");
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add("application/pics-rules", "prf");
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add("application/pkix-cert", "cer");
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add("application/rar", "rar");
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add("application/rdf+xml", "rdf");
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add("application/rss+xml", "rss");
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add("application/zip", "zip");
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add("application/vnd.android.package-archive", "apk");
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add("application/vnd.cinderella", "cdy");
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add("application/vnd.ms-pki.stl", "stl");
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add("application/vnd.oasis.opendocument.database", "odb");
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add("application/vnd.oasis.opendocument.formula", "odf");
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add("application/vnd.oasis.opendocument.graphics", "odg");
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add("application/vnd.oasis.opendocument.graphics-template", "otg");
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add("application/vnd.oasis.opendocument.image", "odi");
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add("application/vnd.oasis.opendocument.spreadsheet", "ods");
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add("application/vnd.oasis.opendocument.spreadsheet-template", "ots");
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add("application/vnd.oasis.opendocument.text", "odt");
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add("application/vnd.oasis.opendocument.text-master", "odm");
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add("application/vnd.oasis.opendocument.text-template", "ott");
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add("application/vnd.oasis.opendocument.text-web", "oth");
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add("application/vnd.google-earth.kml+xml", "kml");
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add("application/vnd.google-earth.kmz", "kmz");
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add("application/msword", "doc");
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add("application/msword", "dot");
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add("application/vnd.openxmlformats-officedocument.wordprocessingml.document", "docx");
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add("application/vnd.openxmlformats-officedocument.wordprocessingml.template", "dotx");
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add("application/vnd.ms-excel", "xls");
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add("application/vnd.ms-excel", "xlt");
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add("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "xlsx");
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add("application/vnd.openxmlformats-officedocument.spreadsheetml.template", "xltx");
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add("application/vnd.ms-powerpoint", "ppt");
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add("application/vnd.ms-powerpoint", "pot");
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add("application/vnd.ms-powerpoint", "pps");
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add("application/vnd.openxmlformats-officedocument.presentationml.presentation", "pptx");
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add("application/vnd.openxmlformats-officedocument.presentationml.template", "potx");
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add("application/vnd.openxmlformats-officedocument.presentationml.slideshow", "ppsx");
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add("application/vnd.rim.cod", "cod");
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add("application/vnd.smaf", "mmf");
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add("application/vnd.stardivision.calc", "sdc");
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add("application/vnd.stardivision.draw", "sda");
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add("application/vnd.stardivision.impress", "sdd");
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add("application/vnd.stardivision.impress", "sdp");
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add("application/vnd.stardivision.math", "smf");
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add("application/vnd.stardivision.writer", "sdw");
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add("application/vnd.stardivision.writer", "vor");
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add("application/vnd.stardivision.writer-global", "sgl");
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add("application/vnd.sun.xml.calc", "sxc");
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add("application/vnd.sun.xml.calc.template", "stc");
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add("application/vnd.sun.xml.draw", "sxd");
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add("application/vnd.sun.xml.draw.template", "std");
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add("application/vnd.sun.xml.impress", "sxi");
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add("application/vnd.sun.xml.impress.template", "sti");
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add("application/vnd.sun.xml.math", "sxm");
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add("application/vnd.sun.xml.writer", "sxw");
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add("application/vnd.sun.xml.writer.global", "sxg");
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add("application/vnd.sun.xml.writer.template", "stw");
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add("application/vnd.visio", "vsd");
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add("application/x-abiword", "abw");
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add("application/x-apple-diskimage", "dmg");
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add("application/x-bcpio", "bcpio");
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add("application/x-bittorrent", "torrent");
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add("application/x-cdf", "cdf");
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add("application/x-cdlink", "vcd");
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add("application/x-chess-pgn", "pgn");
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add("application/x-cpio", "cpio");
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add("application/x-debian-package", "deb");
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add("application/x-debian-package", "udeb");
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add("application/x-director", "dcr");
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add("application/x-director", "dir");
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add("application/x-director", "dxr");
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add("application/x-dms", "dms");
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add("application/x-doom", "wad");
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add("application/x-dvi", "dvi");
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add("application/x-font", "pfa");
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add("application/x-font", "pfb");
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add("application/x-font", "gsf");
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add("application/x-font", "pcf");
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add("application/x-font", "pcf.Z");
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add("application/x-freemind", "mm");
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// application/futuresplash isn't IANA, so application/x-futuresplash should come first.
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add("application/x-futuresplash", "spl");
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add("application/futuresplash", "spl");
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add("application/x-gnumeric", "gnumeric");
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add("application/x-go-sgf", "sgf");
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add("application/x-graphing-calculator", "gcf");
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add("application/x-gtar", "tgz");
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add("application/x-gtar", "gtar");
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add("application/x-gtar", "taz");
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add("application/x-hdf", "hdf");
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add("application/x-ica", "ica");
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add("application/x-internet-signup", "ins");
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add("application/x-internet-signup", "isp");
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add("application/x-iphone", "iii");
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add("application/x-iso9660-image", "iso");
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add("application/x-jmol", "jmz");
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add("application/x-kchart", "chrt");
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add("application/x-killustrator", "kil");
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add("application/x-koan", "skp");
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add("application/x-koan", "skd");
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add("application/x-koan", "skt");
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add("application/x-koan", "skm");
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add("application/x-kpresenter", "kpr");
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add("application/x-kpresenter", "kpt");
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add("application/x-kspread", "ksp");
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add("application/x-kword", "kwd");
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add("application/x-kword", "kwt");
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add("application/x-latex", "latex");
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add("application/x-lha", "lha");
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add("application/x-lzh", "lzh");
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add("application/x-lzx", "lzx");
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add("application/x-maker", "frm");
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add("application/x-maker", "maker");
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add("application/x-maker", "frame");
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add("application/x-maker", "fb");
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add("application/x-maker", "book");
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add("application/x-maker", "fbdoc");
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add("application/x-mif", "mif");
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add("application/x-ms-wmd", "wmd");
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add("application/x-ms-wmz", "wmz");
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add("application/x-msi", "msi");
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add("application/x-ns-proxy-autoconfig", "pac");
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add("application/x-nwc", "nwc");
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add("application/x-object", "o");
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add("application/x-oz-application", "oza");
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add("application/x-pem-file", "pem");
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add("application/x-pkcs12", "p12");
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add("application/x-pkcs12", "pfx");
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add("application/x-pkcs7-certreqresp", "p7r");
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add("application/x-pkcs7-crl", "crl");
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add("application/x-quicktimeplayer", "qtl");
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add("application/x-shar", "shar");
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add("application/x-shockwave-flash", "swf");
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add("application/x-stuffit", "sit");
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add("application/x-sv4cpio", "sv4cpio");
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add("application/x-sv4crc", "sv4crc");
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add("application/x-tar", "tar");
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add("application/x-texinfo", "texinfo");
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add("application/x-texinfo", "texi");
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add("application/x-troff", "t");
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add("application/x-troff", "roff");
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add("application/x-troff-man", "man");
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add("application/x-ustar", "ustar");
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add("application/x-wais-source", "src");
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add("application/x-wingz", "wz");
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add("application/x-webarchive", "webarchive");
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add("application/x-webarchive-xml", "webarchivexml");
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add("application/x-x509-ca-cert", "crt");
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add("application/x-x509-user-cert", "crt");
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add("application/x-x509-server-cert", "crt");
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add("application/x-xcf", "xcf");
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add("application/x-xfig", "fig");
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add("application/xhtml+xml", "xhtml");
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add("audio/3gpp", "3gpp");
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add("audio/aac", "aac");
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add("audio/aac-adts", "aac");
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add("audio/amr", "amr");
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add("audio/amr-wb", "awb");
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add("audio/basic", "snd");
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add("audio/flac", "flac");
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add("application/x-flac", "flac");
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add("audio/imelody", "imy");
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add("audio/midi", "mid");
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add("audio/midi", "midi");
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add("audio/midi", "ota");
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add("audio/midi", "kar");
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add("audio/midi", "rtttl");
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add("audio/midi", "xmf");
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add("audio/mobile-xmf", "mxmf");
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// add ".mp3" first so it will be the default for guessExtensionFromMimeType
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add("audio/mpeg", "mp3");
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add("audio/mpeg", "mpga");
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add("audio/mpeg", "mpega");
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add("audio/mpeg", "mp2");
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add("audio/mpeg", "m4a");
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add("audio/mpegurl", "m3u");
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add("audio/ogg","oga");
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add("audio/prs.sid", "sid");
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add("audio/x-aiff", "aif");
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add("audio/x-aiff", "aiff");
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add("audio/x-aiff", "aifc");
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add("audio/x-gsm", "gsm");
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add("audio/x-matroska", "mka");
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add("audio/x-mpegurl", "m3u");
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add("audio/x-ms-wma", "wma");
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add("audio/x-ms-wax", "wax");
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add("audio/x-pn-realaudio", "ra");
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add("audio/x-pn-realaudio", "rm");
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add("audio/x-pn-realaudio", "ram");
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add("audio/x-realaudio", "ra");
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add("audio/x-scpls", "pls");
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add("audio/x-sd2", "sd2");
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add("audio/x-wav", "wav");
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// image/bmp isn't IANA, so image/x-ms-bmp should come first.
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add("image/x-ms-bmp", "bmp");
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add("image/bmp", "bmp");
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add("image/gif", "gif");
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// image/ico isn't IANA, so image/x-icon should come first.
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add("image/x-icon", "ico");
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add("image/ico", "cur");
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add("image/ico", "ico");
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add("image/ief", "ief");
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// add ".jpg" first so it will be the default for guessExtensionFromMimeType
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add("image/jpeg", "jpg");
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add("image/jpeg", "jpeg");
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add("image/jpeg", "jpe");
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add("image/pcx", "pcx");
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add("image/png", "png");
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add("image/svg+xml", "svg");
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add("image/svg+xml", "svgz");
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add("image/tiff", "tiff");
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add("image/tiff", "tif");
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add("image/vnd.djvu", "djvu");
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add("image/vnd.djvu", "djv");
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add("image/vnd.wap.wbmp", "wbmp");
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add("image/webp", "webp");
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add("image/x-cmu-raster", "ras");
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add("image/x-coreldraw", "cdr");
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add("image/x-coreldrawpattern", "pat");
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add("image/x-coreldrawtemplate", "cdt");
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add("image/x-corelphotopaint", "cpt");
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add("image/x-jg", "art");
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add("image/x-jng", "jng");
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add("image/x-photoshop", "psd");
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add("image/x-portable-anymap", "pnm");
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add("image/x-portable-bitmap", "pbm");
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add("image/x-portable-graymap", "pgm");
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add("image/x-portable-pixmap", "ppm");
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add("image/x-rgb", "rgb");
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add("image/x-xbitmap", "xbm");
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add("image/x-xpixmap", "xpm");
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add("image/x-xwindowdump", "xwd");
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add("model/iges", "igs");
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add("model/iges", "iges");
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add("model/mesh", "msh");
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add("model/mesh", "mesh");
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add("model/mesh", "silo");
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add("text/calendar", "ics");
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add("text/calendar", "icz");
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add("text/comma-separated-values", "csv");
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add("text/css", "css");
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add("text/html", "htm");
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add("text/html", "html");
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add("text/h323", "323");
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add("text/iuls", "uls");
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add("text/mathml", "mml");
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// add ".txt" first so it will be the default for guessExtensionFromMimeType
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add("text/plain", "txt");
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add("text/plain", "asc");
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add("text/plain", "text");
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add("text/plain", "diff");
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add("text/plain", "po"); // reserve "pot" for vnd.ms-powerpoint
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add("text/richtext", "rtx");
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add("text/rtf", "rtf");
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add("text/text", "phps");
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add("text/tab-separated-values", "tsv");
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add("text/xml", "xml");
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add("text/x-bibtex", "bib");
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add("text/x-boo", "boo");
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add("text/x-c++hdr", "hpp");
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add("text/x-c++hdr", "h++");
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add("text/x-c++hdr", "hxx");
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add("text/x-c++hdr", "hh");
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add("text/x-c++src", "cpp");
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add("text/x-c++src", "c++");
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add("text/x-c++src", "cc");
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add("text/x-c++src", "cxx");
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add("text/x-chdr", "h");
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add("text/x-component", "htc");
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add("text/x-csh", "csh");
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add("text/x-csrc", "c");
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add("text/x-dsrc", "d");
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add("text/x-haskell", "hs");
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add("text/x-java", "java");
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add("text/x-literate-haskell", "lhs");
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add("text/x-moc", "moc");
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add("text/x-pascal", "p");
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add("text/x-pascal", "pas");
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add("text/x-pcs-gcd", "gcd");
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add("text/x-setext", "etx");
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add("text/x-tcl", "tcl");
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add("text/x-tex", "tex");
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add("text/x-tex", "ltx");
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add("text/x-tex", "sty");
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add("text/x-tex", "cls");
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add("text/x-vcalendar", "vcs");
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add("text/x-vcard", "vcf");
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add("video/3gpp", "3gpp");
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add("video/3gpp", "3gp");
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add("video/3gpp2", "3gpp2");
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add("video/3gpp2", "3g2");
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add("video/avi", "avi");
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add("video/dl", "dl");
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add("video/dv", "dif");
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add("video/dv", "dv");
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add("video/fli", "fli");
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add("video/m4v", "m4v");
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add("video/mp2ts", "ts");
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add("video/ogg","ogv");
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add("video/mpeg", "mpeg");
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add("video/mpeg", "mpg");
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add("video/mpeg", "mpe");
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add("video/mp4", "mp4");
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add("video/mpeg", "VOB");
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add("video/quicktime", "qt");
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add("video/quicktime", "mov");
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add("video/vnd.mpegurl", "mxu");
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add("video/webm", "webm");
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add("video/x-la-asf", "lsf");
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add("video/x-la-asf", "lsx");
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add("video/x-matroska", "mkv");
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add("video/x-mng", "mng");
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add("video/x-ms-asf", "asf");
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add("video/x-ms-asf", "asx");
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add("video/x-ms-wm", "wm");
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add("video/x-ms-wmv", "wmv");
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add("video/x-ms-wmx", "wmx");
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add("video/x-ms-wvx", "wvx");
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add("video/x-sgi-movie", "movie");
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add("video/x-webex", "wrf");
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add("x-conference/x-cooltalk", "ice");
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add("x-epoc/x-sisx-app", "sisx");
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applyOverrides();
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}
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private static void add(String mimeType, String extension) {
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// If we have an existing x -> y mapping, we do not want to
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// override it with another mapping x -> y2.
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// If a mime type maps to several extensions
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// the first extension added is considered the most popular
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// so we do not want to overwrite it later.
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if (!mimeTypeToExtensionMap.containsKey(mimeType)) {
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mimeTypeToExtensionMap.put(mimeType, extension);
|
|
}
|
|
if (!extensionToMimeTypeMap.containsKey(extension)) {
|
|
extensionToMimeTypeMap.put(extension, mimeType);
|
|
}
|
|
}
|
|
private static InputStream getContentTypesPropertiesStream() {
|
|
// User override?
|
|
String userTable = System.getProperty("content.types.user.table");
|
|
if (userTable != null) {
|
|
File f = new File(userTable);
|
|
if (f.exists()) {
|
|
try {
|
|
return new FileInputStream(f);
|
|
} catch (IOException ignored) {
|
|
}
|
|
}
|
|
}
|
|
// Standard location?
|
|
File f = new File(System.getProperty("java.home"), "lib" + File.separator + "content-types.properties");
|
|
if (f.exists()) {
|
|
try {
|
|
return new FileInputStream(f);
|
|
} catch (IOException ignored) {
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
/**
|
|
* This isn't what the RI does. The RI doesn't have hard-coded defaults, so supplying your
|
|
* own "content.types.user.table" means you don't get any of the built-ins, and the built-ins
|
|
* come from "$JAVA_HOME/lib/content-types.properties".
|
|
*/
|
|
private static void applyOverrides() {
|
|
// Get the appropriate InputStream to read overrides from, if any.
|
|
InputStream stream = getContentTypesPropertiesStream();
|
|
if (stream == null) {
|
|
return;
|
|
}
|
|
try {
|
|
try {
|
|
// Read the properties file...
|
|
Properties overrides = new Properties();
|
|
overrides.load(stream);
|
|
// And translate its mapping to ours...
|
|
for (Map.Entry<Object, Object> entry : overrides.entrySet()) {
|
|
String extension = (String) entry.getKey();
|
|
String mimeType = (String) entry.getValue();
|
|
add(mimeType, extension);
|
|
}
|
|
} finally {
|
|
stream.close();
|
|
}
|
|
} catch (IOException ignored) {
|
|
}
|
|
}
|
|
private MimeUtils() {
|
|
}
|
|
/**
|
|
* Returns true if the given MIME type has an entry in the map.
|
|
* @param mimeType A MIME type (i.e. text/plain)
|
|
* @return True iff there is a mimeType entry in the map.
|
|
*/
|
|
public static boolean hasMimeType(String mimeType) {
|
|
if (mimeType == null || mimeType.isEmpty()) {
|
|
return false;
|
|
}
|
|
return mimeTypeToExtensionMap.containsKey(mimeType);
|
|
}
|
|
/**
|
|
* Returns the MIME type for the given extension.
|
|
* @param extension A file extension without the leading '.'
|
|
* @return The MIME type for the given extension or null iff there is none.
|
|
*/
|
|
public static String guessMimeTypeFromExtension(String extension) {
|
|
if (extension == null || extension.isEmpty()) {
|
|
return null;
|
|
}
|
|
return extensionToMimeTypeMap.get(extension.toLowerCase());
|
|
}
|
|
/**
|
|
* Returns true if the given extension has a registered MIME type.
|
|
* @param extension A file extension without the leading '.'
|
|
* @return True iff there is an extension entry in the map.
|
|
*/
|
|
public static boolean hasExtension(String extension) {
|
|
if (extension == null || extension.isEmpty()) {
|
|
return false;
|
|
}
|
|
return extensionToMimeTypeMap.containsKey(extension);
|
|
}
|
|
/**
|
|
* Returns the registered extension for the given MIME type. Note that some
|
|
* MIME types map to multiple extensions. This call will return the most
|
|
* common extension for the given MIME type.
|
|
* @param mimeType A MIME type (i.e. text/plain)
|
|
* @return The extension for the given MIME type or null iff there is none.
|
|
*/
|
|
public static String guessExtensionFromMimeType(String mimeType) {
|
|
if (mimeType == null || mimeType.isEmpty()) {
|
|
return null;
|
|
}
|
|
return mimeTypeToExtensionMap.get(mimeType.split(";")[0]);
|
|
}
|
|
|
|
public static String guessMimeTypeFromUri(Context context, Uri uri) {
|
|
// try the content resolver
|
|
String mimeType;
|
|
try {
|
|
mimeType = context.getContentResolver().getType(uri);
|
|
} catch (Throwable throwable) {
|
|
mimeType = null;
|
|
}
|
|
// try the extension
|
|
if (mimeType == null && uri.getPath() != null) {
|
|
String path = uri.getPath();
|
|
int start = path.lastIndexOf('.') + 1;
|
|
if (start < path.length()) {
|
|
mimeType = MimeUtils.guessMimeTypeFromExtension(path.substring(start));
|
|
}
|
|
}
|
|
// sometimes this works (as with the commit content api)
|
|
if (mimeType == null) {
|
|
mimeType = uri.getQueryParameter("mimeType");
|
|
}
|
|
return mimeType;
|
|
}
|
|
|
|
public static String extractRelevantExtension(URL url) {
|
|
String path = url.getPath();
|
|
return extractRelevantExtension(path, true);
|
|
}
|
|
|
|
public static String extractRelevantExtension(final String path) {
|
|
return extractRelevantExtension(path, false);
|
|
}
|
|
|
|
public static String extractRelevantExtension(final String path, final boolean ignoreCryptoExtension) {
|
|
if (path == null || path.isEmpty()) {
|
|
return null;
|
|
}
|
|
|
|
String filename = path.substring(path.lastIndexOf('/') + 1).toLowerCase();
|
|
int dotPosition = filename.lastIndexOf(".");
|
|
|
|
if (dotPosition != -1) {
|
|
String extension = filename.substring(dotPosition + 1);
|
|
// we want the real file extension, not the crypto one
|
|
if (ignoreCryptoExtension && Transferable.VALID_CRYPTO_EXTENSIONS.contains(extension)) {
|
|
return extractRelevantExtension(filename.substring(0,dotPosition));
|
|
} else {
|
|
return extension;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
}
|