1069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project/* 2069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/conn/ssl/AbstractVerifier.java $ 3069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * $Revision: 653041 $ 4069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * $Date: 2008-05-03 03:39:28 -0700 (Sat, 03 May 2008) $ 5069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 6069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * ==================================================================== 7069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Licensed to the Apache Software Foundation (ASF) under one 8069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * or more contributor license agreements. See the NOTICE file 9069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * distributed with this work for additional information 10069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * regarding copyright ownership. The ASF licenses this file 11069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * to you under the Apache License, Version 2.0 (the 12069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * "License"); you may not use this file except in compliance 13069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * with the License. You may obtain a copy of the License at 14069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 15069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 16069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 17069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Unless required by applicable law or agreed to in writing, 18069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * software distributed under the License is distributed on an 19069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 20069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * KIND, either express or implied. See the License for the 21069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * specific language governing permissions and limitations 22069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * under the License. 23069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * ==================================================================== 24069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 25069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * This software consists of voluntary contributions made by many 26069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * individuals on behalf of the Apache Software Foundation. For more 27069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * information on the Apache Software Foundation, please see 28069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * <http://www.apache.org/>. 29069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 30069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 31069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 32069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectpackage org.apache.http.conn.ssl; 33069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 34069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport org.apache.http.conn.util.InetAddressUtils; 35069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 36069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.io.IOException; 37069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.io.InputStream; 38069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.security.cert.Certificate; 39069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.security.cert.CertificateParsingException; 40069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.security.cert.X509Certificate; 41069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.util.Arrays; 42069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.util.Collection; 43069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.util.Iterator; 44069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.util.LinkedList; 45069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.util.List; 46069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.util.Locale; 47069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.util.logging.Logger; 48069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport java.util.logging.Level; 49069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 50ec8c48dd748c81ba2cce518bf83cb9f236c30baeAlex Klyubinimport javax.net.ssl.DistinguishedNameParser; 51069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport javax.net.ssl.SSLException; 52069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport javax.net.ssl.SSLSession; 53069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectimport javax.net.ssl.SSLSocket; 54069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 55069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project/** 56069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Abstract base class for all standard {@link X509HostnameVerifier} 57069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * implementations. 58069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 59069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @author Julius Davies 60069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 61069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectpublic abstract class AbstractVerifier implements X509HostnameVerifier { 62069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 63069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project /** 64069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * This contains a list of 2nd-level domains that aren't allowed to 65069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * have wildcards when combined with country-codes. 66069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * For example: [*.co.uk]. 67069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * <p/> 68069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * The [*.co.uk] problem is an interesting one. Should we just hope 69069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * that CA's would never foolishly allow such a certificate to happen? 70069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Looks like we're the only implementation guarding against this. 71069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Firefox, Curl, Sun Java 1.4, 5, 6 don't bother with this check. 72069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 73069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project private final static String[] BAD_COUNTRY_2LDS = 74069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project { "ac", "co", "com", "ed", "edu", "go", "gouv", "gov", "info", 75069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project "lg", "ne", "net", "or", "org" }; 76069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 77069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project static { 78069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // Just in case developer forgot to manually sort the array. :-) 79069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project Arrays.sort(BAD_COUNTRY_2LDS); 80069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 81069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 82069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public AbstractVerifier() { 83069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project super(); 84069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 85069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 86069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public final void verify(String host, SSLSocket ssl) 87069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throws IOException { 88069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(host == null) { 89069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throw new NullPointerException("host to verify is null"); 90069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 91069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 92069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project SSLSession session = ssl.getSession(); 93069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project Certificate[] certs = session.getPeerCertificates(); 94069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project X509Certificate x509 = (X509Certificate) certs[0]; 95069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project verify(host, x509); 96069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 97069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 98069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public final boolean verify(String host, SSLSession session) { 99069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project try { 100069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project Certificate[] certs = session.getPeerCertificates(); 101069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project X509Certificate x509 = (X509Certificate) certs[0]; 102069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project verify(host, x509); 103069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return true; 104069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 105069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project catch(SSLException e) { 106069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return false; 107069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 108069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 109069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 110069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public final void verify(String host, X509Certificate cert) 111069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throws SSLException { 112069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project String[] cns = getCNs(cert); 113069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project String[] subjectAlts = getDNSSubjectAlts(cert); 114069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project verify(host, cns, subjectAlts); 115069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 116069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 117069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public final void verify(final String host, final String[] cns, 118069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final String[] subjectAlts, 119069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project final boolean strictWithSubDomains) 120069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throws SSLException { 121069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 122069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // Build the list of names we're going to check. Our DEFAULT and 123069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // STRICT implementations of the HostnameVerifier only use the 124069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // first CN provided. All other CNs are ignored. 125069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // (Firefox, wget, curl, Sun Java 1.4, 5, 6 all work this way). 126069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project LinkedList<String> names = new LinkedList<String>(); 127069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(cns != null && cns.length > 0 && cns[0] != null) { 128069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project names.add(cns[0]); 129069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 130069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(subjectAlts != null) { 131069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project for (String subjectAlt : subjectAlts) { 132069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (subjectAlt != null) { 133069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project names.add(subjectAlt); 134069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 135069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 136069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 137069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 138069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(names.isEmpty()) { 139069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project String msg = "Certificate for <" + host + "> doesn't contain CN or DNS subjectAlt"; 140069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throw new SSLException(msg); 141069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 142069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 143069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // StringBuffer for building the error message. 144069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project StringBuffer buf = new StringBuffer(); 145069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 146069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // We're can be case-insensitive when comparing the host we used to 147069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // establish the socket to the hostname in the certificate. 148069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project String hostName = host.trim().toLowerCase(Locale.ENGLISH); 149069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project boolean match = false; 150069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project for(Iterator<String> it = names.iterator(); it.hasNext();) { 151069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // Don't trim the CN, though! 152069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project String cn = it.next(); 153069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project cn = cn.toLowerCase(Locale.ENGLISH); 154069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // Store CN in StringBuffer in case we need to report an error. 155069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project buf.append(" <"); 156069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project buf.append(cn); 157069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project buf.append('>'); 158069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(it.hasNext()) { 159069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project buf.append(" OR"); 160069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 161069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 162069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // The CN better have at least two dots if it wants wildcard 163069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // action. It also can't be [*.co.uk] or [*.co.jp] or 164069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // [*.org.uk], etc... 165069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project boolean doWildcard = cn.startsWith("*.") && 166177cd647c9fa02329fb9800f71282b233170f986Brian Carlstrom cn.indexOf('.', 2) != -1 && 167069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project acceptableCountryWildcard(cn) && 168069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project !InetAddressUtils.isIPv4Address(host); 169069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 170069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(doWildcard) { 171069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project match = hostName.endsWith(cn.substring(1)); 172069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(match && strictWithSubDomains) { 173069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // If we're in strict mode, then [*.foo.com] is not 174069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // allowed to match [a.b.foo.com] 175069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project match = countDots(hostName) == countDots(cn); 176069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 177069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } else { 178069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project match = hostName.equals(cn); 179069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 180069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(match) { 181069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project break; 182069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 183069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 184069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(!match) { 185069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throw new SSLException("hostname in certificate didn't match: <" + host + "> !=" + buf); 186069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 187069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 188069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 189069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public static boolean acceptableCountryWildcard(String cn) { 190069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project int cnLen = cn.length(); 191069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(cnLen >= 7 && cnLen <= 9) { 192069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // Look for the '.' in the 3rd-last position: 193069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(cn.charAt(cnLen - 3) == '.') { 194069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // Trim off the [*.] and the [.XX]. 195069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project String s = cn.substring(2, cnLen - 3); 196069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // And test against the sorted array of bad 2lds: 197069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project int x = Arrays.binarySearch(BAD_COUNTRY_2LDS, s); 198069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return x < 0; 199069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 200069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 201069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return true; 202069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 203069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 204069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public static String[] getCNs(X509Certificate cert) { 205ec8c48dd748c81ba2cce518bf83cb9f236c30baeAlex Klyubin DistinguishedNameParser dnParser = 206ec8c48dd748c81ba2cce518bf83cb9f236c30baeAlex Klyubin new DistinguishedNameParser(cert.getSubjectX500Principal()); 207ec8c48dd748c81ba2cce518bf83cb9f236c30baeAlex Klyubin List<String> cnList = dnParser.getAllMostSpecificFirst("cn"); 208ec8c48dd748c81ba2cce518bf83cb9f236c30baeAlex Klyubin 209069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(!cnList.isEmpty()) { 210069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project String[] cns = new String[cnList.size()]; 211069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project cnList.toArray(cns); 212069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return cns; 213069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } else { 214069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return null; 215069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 216069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 217069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 218069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 219069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project /** 220069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Extracts the array of SubjectAlt DNS names from an X509Certificate. 221069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Returns null if there aren't any. 222069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * <p/> 223069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Note: Java doesn't appear able to extract international characters 224069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * from the SubjectAlts. It can only extract international characters 225069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * from the CN field. 226069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * <p/> 227069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * (Or maybe the version of OpenSSL I'm using to test isn't storing the 228069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * international characters correctly in the SubjectAlts?). 229069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 230069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @param cert X509Certificate 231069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @return Array of SubjectALT DNS names stored in the certificate. 232069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 233069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public static String[] getDNSSubjectAlts(X509Certificate cert) { 234069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project LinkedList<String> subjectAltList = new LinkedList<String>(); 235069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project Collection<List<?>> c = null; 236069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project try { 237069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project c = cert.getSubjectAlternativeNames(); 238069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 239069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project catch(CertificateParsingException cpe) { 240069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project Logger.getLogger(AbstractVerifier.class.getName()) 241069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project .log(Level.FINE, "Error parsing certificate.", cpe); 242069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 243069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(c != null) { 244069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project for (List<?> aC : c) { 245069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project List<?> list = aC; 246069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project int type = ((Integer) list.get(0)).intValue(); 247069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project // If type is 2, then we've got a dNSName 248069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (type == 2) { 249069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project String s = (String) list.get(1); 250069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project subjectAltList.add(s); 251069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 252069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 253069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 254069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(!subjectAltList.isEmpty()) { 255069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project String[] subjectAlts = new String[subjectAltList.size()]; 256069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project subjectAltList.toArray(subjectAlts); 257069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return subjectAlts; 258069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } else { 259069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return null; 260069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 261069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 262069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 263069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project /** 264069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Counts the number of dots "." in a string. 265069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @param s string to count dots from 266069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @return number of dots 267069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 268069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public static int countDots(final String s) { 269069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project int count = 0; 270069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project for(int i = 0; i < s.length(); i++) { 271069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if(s.charAt(i) == '.') { 272069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project count++; 273069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 274069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 275069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return count; 276069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 277069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 278069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project} 279