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/"; 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Cleans up (if possible) user-entered web addresses 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static String guessUrl(String inUrl) { 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String retVal = inUrl; 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project WebAddress webAddress; 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 502c2d72a7fd3efae0daae9696643cf8c3f069b248Jeff Hamilton if (DebugFlags.URL_UTIL) Log.v(LOGTAG, "guessURL before queueRequest: " + inUrl); 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (inUrl.length() == 0) return inUrl; 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (inUrl.startsWith("about:")) return inUrl; 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Do not try to interpret data scheme URLs 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (inUrl.startsWith("data:")) return inUrl; 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Do not try to interpret file scheme URLs 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (inUrl.startsWith("file:")) return inUrl; 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Do not try to interpret javascript scheme URLs 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (inUrl.startsWith("javascript:")) return inUrl; 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // bug 762454: strip period off end of url 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (inUrl.endsWith(".") == true) { 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project inUrl = inUrl.substring(0, inUrl.length() - 1); 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project webAddress = new WebAddress(inUrl); 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (ParseException ex) { 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 702e5c150e746647a1ce5c10e1708debbf06c45ea7Derek Sollenberger if (DebugFlags.URL_UTIL) { 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v(LOGTAG, "smartUrlFilter: failed to parse url = " + inUrl); 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return retVal; 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Check host 77eb8be973c7982fe3ece0aeaeca379c3b3cdced0cBjorn Bringert if (webAddress.getHost().indexOf('.') == -1) { 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // no dot: user probably entered a bare domain. try .com 79eb8be973c7982fe3ece0aeaeca379c3b3cdced0cBjorn Bringert webAddress.setHost("www." + webAddress.getHost() + ".com"); 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return webAddress.toString(); 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static String composeSearchUrl(String inQuery, String template, 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String queryPlaceHolder) { 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int placeHolderIndex = template.indexOf(queryPlaceHolder); 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (placeHolderIndex < 0) { 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String query; 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project StringBuilder buffer = new StringBuilder(); 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project buffer.append(template.substring(0, placeHolderIndex)); 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project query = java.net.URLEncoder.encode(inQuery, "utf-8"); 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project buffer.append(query); 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (UnsupportedEncodingException ex) { 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project buffer.append(template.substring( 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project placeHolderIndex + queryPlaceHolder.length())); 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return buffer.toString(); 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static byte[] decode(byte[] url) throws IllegalArgumentException { 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (url.length == 0) { 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new byte[0]; 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Create a new byte array with the same length to ensure capacity 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project byte[] tempData = new byte[url.length]; 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int tempCount = 0; 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i = 0; i < url.length; i++) { 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project byte b = url[i]; 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (b == '%') { 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (url.length - i > 2) { 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project b = (byte) (parseHex(url[i + 1]) * 16 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + parseHex(url[i + 2])); 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project i += 2; 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("Invalid format"); 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project tempData[tempCount++] = b; 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project byte[] retData = new byte[tempCount]; 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project System.arraycopy(tempData, 0, retData, 0, tempCount); 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return retData; 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 135758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba /** 136758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba * @return True iff the url is correctly URL encoded 137758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba */ 138758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba static boolean verifyURLEncoding(String url) { 139758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba int count = url.length(); 140758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba if (count == 0) { 141758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba return false; 142758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } 143758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba 144758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba int index = url.indexOf('%'); 145758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba while (index >= 0 && index < count) { 146758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba if (index < count - 2) { 147758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba try { 148758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba parseHex((byte) url.charAt(++index)); 149758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba parseHex((byte) url.charAt(++index)); 150758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } catch (IllegalArgumentException e) { 151758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba return false; 152758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } 153758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } else { 154758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba return false; 155758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } 156758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba index = url.indexOf('%', index + 1); 157758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } 158758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba return true; 159758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba } 160758bf410843724d31f4ab48e8d7dd6b7c1240f23Grace Kloba 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static int parseHex(byte b) { 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (b >= '0' && b <= '9') return (b - '0'); 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (b >= 'A' && b <= 'F') return (b - 'A' + 10); 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (b >= 'a' && b <= 'f') return (b - 'a' + 10); 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("Invalid hex char '" + b + "'"); 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is an asset file. 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isAssetUrl(String url) { 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && url.startsWith(ASSET_BASE); 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 175bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba 176bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba /** 177bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba * @return True iff the url is a resource file. 178bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba * @hide 179bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba */ 180bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba public static boolean isResourceUrl(String url) { 181bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba return (null != url) && url.startsWith(RESOURCE_BASE); 182bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba } 183bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is an proxy url to allow cookieless network 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * requests from a file url. 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @deprecated Cookieless proxy is no longer supported. 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1894a51c20ce607c74914f90fd897f04080121ac13bDianne Hackborn @Deprecated 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isCookielessProxyUrl(String url) { 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && url.startsWith(PROXY_BASE); 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is a local file. 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isFileUrl(String url) { 1989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && (url.startsWith(FILE_BASE) && 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project !url.startsWith(ASSET_BASE) && 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project !url.startsWith(PROXY_BASE)); 2019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is an about: url. 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isAboutUrl(String url) { 2079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && url.startsWith("about:"); 2089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is a data: url. 2129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isDataUrl(String url) { 2149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && url.startsWith("data:"); 2159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is a javascript: url. 2199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isJavaScriptUrl(String url) { 2219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && url.startsWith("javascript:"); 2229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is an http: url. 2269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isHttpUrl(String url) { 2289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && 2299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (url.length() > 6) && 2309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project url.substring(0, 7).equalsIgnoreCase("http://"); 2319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is an https: url. 2359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isHttpsUrl(String url) { 2379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && 2389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project (url.length() > 7) && 2399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project url.substring(0, 8).equalsIgnoreCase("https://"); 2409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is a network url. 2449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isNetworkUrl(String url) { 2469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (url == null || url.length() == 0) { 2479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 2489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return isHttpUrl(url) || isHttpsUrl(url); 2509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is a content: url. 2549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isContentUrl(String url) { 2569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (null != url) && url.startsWith("content:"); 2579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return True iff the url is valid. 2619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static boolean isValidUrl(String url) { 2639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (url == null || url.length() == 0) { 2649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 2659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return (isAssetUrl(url) || 268bd5c823e28d907d85b8d0867133343ccda014451Grace Kloba isResourceUrl(url) || 2699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project isFileUrl(url) || 2709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project isAboutUrl(url) || 2719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project isHttpUrl(url) || 2729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project isHttpsUrl(url) || 2739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project isJavaScriptUrl(url) || 2749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project isContentUrl(url)); 2759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Strips the url of the anchor. 2799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static String stripAnchor(String url) { 2819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int anchorIndex = url.indexOf('#'); 2829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (anchorIndex != -1) { 2839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return url.substring(0, anchorIndex); 2849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return url; 2869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 2879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 2899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Guesses canonical filename that a download would have, using 2909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the URL and contentDisposition. File extension, if not defined, 2919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is added based on the mimetype 2929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param url Url to the content 2939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param contentDisposition Content-Disposition HTTP header or null 2949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param mimeType Mime-type of the content or null 2959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 2969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @return suggested filename 2979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 2989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final String guessFileName( 2999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String url, 3009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String contentDisposition, 3019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String mimeType) { 3029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String filename = null; 3039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String extension = null; 3049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If we couldn't do anything with the hint, move toward the content disposition 3069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (filename == null && contentDisposition != null) { 3079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filename = parseContentDisposition(contentDisposition); 3089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (filename != null) { 3099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index = filename.lastIndexOf('/') + 1; 3109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index > 0) { 3119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filename = filename.substring(index); 3129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If all the other http-related approaches failed, use the plain uri 3179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (filename == null) { 3189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String decodedUrl = Uri.decode(url); 3199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (decodedUrl != null) { 3209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int queryIndex = decodedUrl.indexOf('?'); 3219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If there is a query string strip it, same as desktop browsers 3229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (queryIndex > 0) { 3239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project decodedUrl = decodedUrl.substring(0, queryIndex); 3249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (!decodedUrl.endsWith("/")) { 3269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int index = decodedUrl.lastIndexOf('/') + 1; 3279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (index > 0) { 3289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filename = decodedUrl.substring(index); 3299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 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 // Finally, if couldn't get filename from URI, get a generic filename 3359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (filename == null) { 3369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filename = "downloadfile"; 3379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Split filename between base and extension 3409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Add an extension if filename does not have one 3419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int dotIndex = filename.indexOf('.'); 3429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (dotIndex < 0) { 3439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mimeType != null) { 3449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mimeType); 3459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (extension != null) { 3469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = "." + extension; 3479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (extension == null) { 3509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mimeType != null && mimeType.toLowerCase().startsWith("text/")) { 3519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mimeType.equalsIgnoreCase("text/html")) { 3529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = ".html"; 3539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = ".txt"; 3559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = ".bin"; 3589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 3619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mimeType != null) { 3629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Compare the last segment of the extension against the mime type. 3639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // If there's a mismatch, discard the entire extension. 3649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int lastDotIndex = filename.lastIndexOf('.'); 3659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project String typeFromExt = MimeTypeMap.getSingleton().getMimeTypeFromExtension( 3669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filename.substring(lastDotIndex + 1)); 3679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (typeFromExt != null && !typeFromExt.equalsIgnoreCase(mimeType)) { 3689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mimeType); 3699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (extension != null) { 3709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = "." + extension; 3719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (extension == null) { 3759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project extension = filename.substring(dotIndex); 3769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project filename = filename.substring(0, dotIndex); 3789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return filename + extension; 3819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 3829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** Regex used to parse content-disposition headers */ 3849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final Pattern CONTENT_DISPOSITION_PATTERN = 385208360b22db7bdd940a7005fd44135e8916742afBen Murdoch Pattern.compile("attachment;\\s*filename\\s*=\\s*(\"?)([^\"]*)\\1\\s*$", 386208360b22db7bdd940a7005fd44135e8916742afBen Murdoch Pattern.CASE_INSENSITIVE); 3879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 3889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 3899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Parse the Content-Disposition HTTP Header. The format of the header 3909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * is defined here: http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html 3919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This header provides a filename for content that is going to be 3929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * downloaded to the file system. We only support the attachment type. 393208360b22db7bdd940a7005fd44135e8916742afBen Murdoch * Note that RFC 2616 specifies the filename value must be double-quoted. 394208360b22db7bdd940a7005fd44135e8916742afBen Murdoch * Unfortunately some servers do not quote the value so to maintain 395208360b22db7bdd940a7005fd44135e8916742afBen Murdoch * consistent behaviour with other browsers, we allow unquoted values too. 3969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 397f8ddc988dc2d9be2f75e0b0d9aa234dad7c8258dGrace Kloba static String parseContentDisposition(String contentDisposition) { 3989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 3999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Matcher m = CONTENT_DISPOSITION_PATTERN.matcher(contentDisposition); 4009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (m.find()) { 401208360b22db7bdd940a7005fd44135e8916742afBen Murdoch return m.group(2); 4029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (IllegalStateException ex) { 4049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // This function is defined as returning null when it can't parse the header 4059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; 4079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 4089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 409