19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.webkit; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.io.UnsupportedEncodingException; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.regex.Matcher; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.regex.Pattern; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.net.Uri; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.net.ParseException; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.net.WebAddress; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.Log; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic final class URLUtil { 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final String LOGTAG = "webkit"; 31bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba 32bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba // to refer to bar.png under your package's asset/foo/ directory, use 33bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba // "file:///android_asset/foo/bar.png". 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final String ASSET_BASE = "file:///android_asset/"; 35bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba // to refer to bar.png under your package's res/drawable/ directory, use 36bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba // "file:///android_res/drawable/bar.png". Use "drawable" to refer to 37bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba // "drawable-hdpi" directory as well. 38bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba static final String RESOURCE_BASE = "file:///android_res/"; 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final String FILE_BASE = "file://"; 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final String PROXY_BASE = "file:///cookieless_proxy/"; 410fa72ef10e08e35c28176837c733bd085b17e0ffJonathan Dixon static final String CONTENT_BASE = "content:"; 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Cleans up (if possible) user-entered web addresses 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static String guessUrl(String inUrl) { 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String retVal = inUrl; 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project WebAddress webAddress; 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 512c2d72a7fd3efae0daae9696643cf8c3f069b248Jeff Hamilton if (DebugFlags.URL_UTIL) Log.v(LOGTAG, "guessURL before queueRequest: " + inUrl); 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (inUrl.length() == 0) return inUrl; 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (inUrl.startsWith("about:")) return inUrl; 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Do not try to interpret data scheme URLs 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (inUrl.startsWith("data:")) return inUrl; 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Do not try to interpret file scheme URLs 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (inUrl.startsWith("file:")) return inUrl; 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Do not try to interpret javascript scheme URLs 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (inUrl.startsWith("javascript:")) return inUrl; 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // bug 762454: strip period off end of url 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (inUrl.endsWith(".") == true) { 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project inUrl = inUrl.substring(0, inUrl.length() - 1); 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project webAddress = new WebAddress(inUrl); 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (ParseException ex) { 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 712e5c150e746647a1ce5c10e1708debbf06c45ea7Derek Sollenberger if (DebugFlags.URL_UTIL) { 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(LOGTAG, "smartUrlFilter: failed to parse url = " + inUrl); 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return retVal; 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check host 78eb8be973c7982fe3ece0aeaeca379c3b3cdced0cBjorn Bringert if (webAddress.getHost().indexOf('.') == -1) { 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // no dot: user probably entered a bare domain. try .com 80eb8be973c7982fe3ece0aeaeca379c3b3cdced0cBjorn Bringert webAddress.setHost("www." + webAddress.getHost() + ".com"); 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return webAddress.toString(); 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static String composeSearchUrl(String inQuery, String template, 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String queryPlaceHolder) { 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int placeHolderIndex = template.indexOf(queryPlaceHolder); 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (placeHolderIndex < 0) { 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String query; 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project StringBuilder buffer = new StringBuilder(); 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project buffer.append(template.substring(0, placeHolderIndex)); 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project query = java.net.URLEncoder.encode(inQuery, "utf-8"); 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project buffer.append(query); 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (UnsupportedEncodingException ex) { 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project buffer.append(template.substring( 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project placeHolderIndex + queryPlaceHolder.length())); 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return buffer.toString(); 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static byte[] decode(byte[] url) throws IllegalArgumentException { 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (url.length == 0) { 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new byte[0]; 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Create a new byte array with the same length to ensure capacity 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project byte[] tempData = new byte[url.length]; 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int tempCount = 0; 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < url.length; i++) { 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project byte b = url[i]; 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (b == '%') { 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (url.length - i > 2) { 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project b = (byte) (parseHex(url[i + 1]) * 16 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + parseHex(url[i + 2])); 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += 2; 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("Invalid format"); 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project tempData[tempCount++] = b; 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project byte[] retData = new byte[tempCount]; 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project System.arraycopy(tempData, 0, retData, 0, tempCount); 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return retData; 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 136758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba /** 137758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba * @return True iff the url is correctly URL encoded 138758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba */ 139758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba static boolean verifyURLEncoding(String url) { 140758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba int count = url.length(); 141758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba if (count == 0) { 142758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba return false; 143758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } 144758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba 145758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba int index = url.indexOf('%'); 146758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba while (index >= 0 && index < count) { 147758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba if (index < count - 2) { 148758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba try { 149758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba parseHex((byte) url.charAt(++index)); 150758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba parseHex((byte) url.charAt(++index)); 151758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } catch (IllegalArgumentException e) { 152758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba return false; 153758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } 154758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } else { 155758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba return false; 156758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } 157758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba index = url.indexOf('%', index + 1); 158758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } 159758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba return true; 160758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } 161758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static int parseHex(byte b) { 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (b >= '0' && b <= '9') return (b - '0'); 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (b >= 'A' && b <= 'F') return (b - 'A' + 10); 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (b >= 'a' && b <= 'f') return (b - 'a' + 10); 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("Invalid hex char '" + b + "'"); 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is an asset file. 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isAssetUrl(String url) { 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && url.startsWith(ASSET_BASE); 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 176bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba 177bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba /** 178bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba * @return True iff the url is a resource file. 179bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba * @hide 180bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba */ 181bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba public static boolean isResourceUrl(String url) { 182bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba return (null != url) && url.startsWith(RESOURCE_BASE); 183bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba } 184bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 186f76a50ce8fdc6aea22cabc77b2977a1a15a79630Ken Wakasa * @return True iff the url is a proxy url to allow cookieless network 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * requests from a file url. 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @deprecated Cookieless proxy is no longer supported. 1899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1904a51c20ce607c74914f90fd897f04080121ac13bDianne Hackborn @Deprecated 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isCookielessProxyUrl(String url) { 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && url.startsWith(PROXY_BASE); 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is a local file. 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isFileUrl(String url) { 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && (url.startsWith(FILE_BASE) && 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project !url.startsWith(ASSET_BASE) && 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project !url.startsWith(PROXY_BASE)); 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is an about: url. 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isAboutUrl(String url) { 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && url.startsWith("about:"); 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is a data: url. 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isDataUrl(String url) { 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && url.startsWith("data:"); 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is a javascript: url. 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isJavaScriptUrl(String url) { 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && url.startsWith("javascript:"); 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is an http: url. 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isHttpUrl(String url) { 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (url.length() > 6) && 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project url.substring(0, 7).equalsIgnoreCase("http://"); 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is an https: url. 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isHttpsUrl(String url) { 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (url.length() > 7) && 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project url.substring(0, 8).equalsIgnoreCase("https://"); 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is a network url. 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isNetworkUrl(String url) { 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (url == null || url.length() == 0) { 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return isHttpUrl(url) || isHttpsUrl(url); 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is a content: url. 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isContentUrl(String url) { 2570fa72ef10e08e35c28176837c733bd085b17e0ffJonathan Dixon return (null != url) && url.startsWith(CONTENT_BASE); 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is valid. 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isValidUrl(String url) { 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (url == null || url.length() == 0) { 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (isAssetUrl(url) || 269bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba isResourceUrl(url) || 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project isFileUrl(url) || 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project isAboutUrl(url) || 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project isHttpUrl(url) || 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project isHttpsUrl(url) || 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project isJavaScriptUrl(url) || 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project isContentUrl(url)); 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Strips the url of the anchor. 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static String stripAnchor(String url) { 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int anchorIndex = url.indexOf('#'); 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (anchorIndex != -1) { 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return url.substring(0, anchorIndex); 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return url; 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Guesses canonical filename that a download would have, using 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the URL and contentDisposition. File extension, if not defined, 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is added based on the mimetype 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param url Url to the content 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param contentDisposition Content-Disposition HTTP header or null 2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param mimeType Mime-type of the content or null 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return suggested filename 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final String guessFileName( 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String url, 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String contentDisposition, 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String mimeType) { 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String filename = null; 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String extension = null; 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If we couldn't do anything with the hint, move toward the content disposition 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (filename == null && contentDisposition != null) { 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filename = parseContentDisposition(contentDisposition); 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (filename != null) { 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index = filename.lastIndexOf('/') + 1; 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index > 0) { 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filename = filename.substring(index); 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If all the other http-related approaches failed, use the plain uri 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (filename == null) { 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String decodedUrl = Uri.decode(url); 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (decodedUrl != null) { 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int queryIndex = decodedUrl.indexOf('?'); 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If there is a query string strip it, same as desktop browsers 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (queryIndex > 0) { 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project decodedUrl = decodedUrl.substring(0, queryIndex); 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!decodedUrl.endsWith("/")) { 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index = decodedUrl.lastIndexOf('/') + 1; 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index > 0) { 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filename = decodedUrl.substring(index); 3309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Finally, if couldn't get filename from URI, get a generic filename 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (filename == null) { 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filename = "downloadfile"; 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Split filename between base and extension 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add an extension if filename does not have one 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int dotIndex = filename.indexOf('.'); 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (dotIndex < 0) { 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mimeType != null) { 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mimeType); 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (extension != null) { 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = "." + extension; 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (extension == null) { 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mimeType != null && mimeType.toLowerCase().startsWith("text/")) { 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mimeType.equalsIgnoreCase("text/html")) { 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = ".html"; 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = ".txt"; 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = ".bin"; 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mimeType != null) { 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Compare the last segment of the extension against the mime type. 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If there's a mismatch, discard the entire extension. 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastDotIndex = filename.lastIndexOf('.'); 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String typeFromExt = MimeTypeMap.getSingleton().getMimeTypeFromExtension( 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filename.substring(lastDotIndex + 1)); 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (typeFromExt != null && !typeFromExt.equalsIgnoreCase(mimeType)) { 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mimeType); 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (extension != null) { 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = "." + extension; 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (extension == null) { 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = filename.substring(dotIndex); 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filename = filename.substring(0, dotIndex); 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return filename + extension; 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Regex used to parse content-disposition headers */ 3859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final Pattern CONTENT_DISPOSITION_PATTERN = 386208360b22db7bdd940a7005fd44135e8916742afBen Murdoch Pattern.compile("attachment;\\s*filename\\s*=\\s*(\"?)([^\"]*)\\1\\s*$", 387208360b22db7bdd940a7005fd44135e8916742afBen Murdoch Pattern.CASE_INSENSITIVE); 3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Parse the Content-Disposition HTTP Header. The format of the header 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is defined here: http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This header provides a filename for content that is going to be 3939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * downloaded to the file system. We only support the attachment type. 394208360b22db7bdd940a7005fd44135e8916742afBen Murdoch * Note that RFC 2616 specifies the filename value must be double-quoted. 395208360b22db7bdd940a7005fd44135e8916742afBen Murdoch * Unfortunately some servers do not quote the value so to maintain 396208360b22db7bdd940a7005fd44135e8916742afBen Murdoch * consistent behaviour with other browsers, we allow unquoted values too. 3979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 398f8ddc988dc2d9be2f75e0b0d9aa234dad7c8258dGrace Kloba static String parseContentDisposition(String contentDisposition) { 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Matcher m = CONTENT_DISPOSITION_PATTERN.matcher(contentDisposition); 4019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (m.find()) { 402208360b22db7bdd940a7005fd44135e8916742afBen Murdoch return m.group(2); 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IllegalStateException ex) { 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This function is defined as returning null when it can't parse the header 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 410