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A library jar that provides APIs for Applications written for the Google Android Platform.
/*
* $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/module-client/src/main/java/org/apache/http/conn/ssl/AbstractVerifier.java $
* $Revision: 653041 $
* $Date: 2008-05-03 03:39:28 -0700 (Sat, 03 May 2008) $
*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* names = new LinkedList();
if(cns != null && cns.length > 0 && cns[0] != null) {
names.add(cns[0]);
}
if(subjectAlts != null) {
for (String subjectAlt : subjectAlts) {
if (subjectAlt != null) {
names.add(subjectAlt);
}
}
}
if(names.isEmpty()) {
String msg = "Certificate for <" + host + "> doesn't contain CN or DNS subjectAlt";
throw new SSLException(msg);
}
// StringBuffer for building the error message.
StringBuffer buf = new StringBuffer();
// We're can be case-insensitive when comparing the host we used to
// establish the socket to the hostname in the certificate.
String hostName = host.trim().toLowerCase(Locale.ENGLISH);
boolean match = false;
for(Iterator it = names.iterator(); it.hasNext();) {
// Don't trim the CN, though!
String cn = it.next();
cn = cn.toLowerCase(Locale.ENGLISH);
// Store CN in StringBuffer in case we need to report an error.
buf.append(" <");
buf.append(cn);
buf.append('>');
if(it.hasNext()) {
buf.append(" OR");
}
// The CN better have at least two dots if it wants wildcard
// action. It also can't be [*.co.uk] or [*.co.jp] or
// [*.org.uk], etc...
boolean doWildcard = cn.startsWith("*.") &&
cn.indexOf('.', 2) != -1 &&
acceptableCountryWildcard(cn) &&
!isIPv4Address(host);
if(doWildcard) {
match = hostName.endsWith(cn.substring(1));
if(match && strictWithSubDomains) {
// If we're in strict mode, then [*.foo.com] is not
// allowed to match [a.b.foo.com]
match = countDots(hostName) == countDots(cn);
}
} else {
match = hostName.equals(cn);
}
if(match) {
break;
}
}
if(!match) {
throw new SSLException("hostname in certificate didn't match: <" + host + "> !=" + buf);
}
}
public static boolean acceptableCountryWildcard(String cn) {
int cnLen = cn.length();
if(cnLen >= 7 && cnLen <= 9) {
// Look for the '.' in the 3rd-last position:
if(cn.charAt(cnLen - 3) == '.') {
// Trim off the [*.] and the [.XX].
String s = cn.substring(2, cnLen - 3);
// And test against the sorted array of bad 2lds:
int x = Arrays.binarySearch(BAD_COUNTRY_2LDS, s);
return x < 0;
}
}
return true;
}
public static String[] getCNs(X509Certificate cert) {
AndroidDistinguishedNameParser dnParser =
new AndroidDistinguishedNameParser(cert.getSubjectX500Principal());
List cnList = dnParser.getAllMostSpecificFirst("cn");
if(!cnList.isEmpty()) {
String[] cns = new String[cnList.size()];
cnList.toArray(cns);
return cns;
} else {
return null;
}
}
/**
* Extracts the array of SubjectAlt DNS names from an X509Certificate.
* Returns null if there aren't any.
*
* Note: Java doesn't appear able to extract international characters
* from the SubjectAlts. It can only extract international characters
* from the CN field.
*
* (Or maybe the version of OpenSSL I'm using to test isn't storing the
* international characters correctly in the SubjectAlts?).
*
* @param cert X509Certificate
* @return Array of SubjectALT DNS names stored in the certificate.
*/
public static String[] getDNSSubjectAlts(X509Certificate cert) {
LinkedList subjectAltList = new LinkedList();
Collection> c = null;
try {
c = cert.getSubjectAlternativeNames();
}
catch(CertificateParsingException cpe) {
Logger.getLogger(AbstractVerifier.class.getName())
.log(Level.FINE, "Error parsing certificate.", cpe);
}
if(c != null) {
for (List aC : c) {
List list = aC;
int type = ((Integer) list.get(0)).intValue();
// If type is 2, then we've got a dNSName
if (type == 2) {
String s = (String) list.get(1);
subjectAltList.add(s);
}
}
}
if(!subjectAltList.isEmpty()) {
String[] subjectAlts = new String[subjectAltList.size()];
subjectAltList.toArray(subjectAlts);
return subjectAlts;
} else {
return null;
}
}
/**
* Counts the number of dots "." in a string.
* @param s string to count dots from
* @return number of dots
*/
public static int countDots(final String s) {
int count = 0;
for(int i = 0; i < s.length(); i++) {
if(s.charAt(i) == '.') {
count++;
}
}
return count;
}
private static boolean isIPv4Address(final String input) {
return IPV4_PATTERN.matcher(input).matches();
}
}