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Diffstat (limited to 'src/org/apache/http/conn/ssl/AbstractVerifier.java')
| -rw-r--r-- | src/org/apache/http/conn/ssl/AbstractVerifier.java | 343 |
1 files changed, 0 insertions, 343 deletions
diff --git a/src/org/apache/http/conn/ssl/AbstractVerifier.java b/src/org/apache/http/conn/ssl/AbstractVerifier.java deleted file mode 100644 index 5195e58..0000000 --- a/src/org/apache/http/conn/ssl/AbstractVerifier.java +++ /dev/null @@ -1,343 +0,0 @@ -/* - * $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 - * <http://www.apache.org/>. - * - */ - -package org.apache.http.conn.ssl; - -import org.apache.http.conn.util.InetAddressUtils; - -import java.io.IOException; -import java.io.InputStream; -import java.security.cert.Certificate; -import java.security.cert.CertificateParsingException; -import java.security.cert.X509Certificate; -import java.util.Arrays; -import java.util.Collection; -import java.util.Iterator; -import java.util.LinkedList; -import java.util.List; -import java.util.Locale; -import java.util.StringTokenizer; -import java.util.logging.Logger; -import java.util.logging.Level; - -import javax.net.ssl.SSLException; -import javax.net.ssl.SSLSession; -import javax.net.ssl.SSLSocket; - -/** - * Abstract base class for all standard {@link X509HostnameVerifier} - * implementations. - * - * @author Julius Davies - */ -public abstract class AbstractVerifier implements X509HostnameVerifier { - - /** - * This contains a list of 2nd-level domains that aren't allowed to - * have wildcards when combined with country-codes. - * For example: [*.co.uk]. - * <p/> - * The [*.co.uk] problem is an interesting one. Should we just hope - * that CA's would never foolishly allow such a certificate to happen? - * Looks like we're the only implementation guarding against this. - * Firefox, Curl, Sun Java 1.4, 5, 6 don't bother with this check. - */ - private final static String[] BAD_COUNTRY_2LDS = - { "ac", "co", "com", "ed", "edu", "go", "gouv", "gov", "info", - "lg", "ne", "net", "or", "org" }; - - static { - // Just in case developer forgot to manually sort the array. :-) - Arrays.sort(BAD_COUNTRY_2LDS); - } - - public AbstractVerifier() { - super(); - } - - public final void verify(String host, SSLSocket ssl) - throws IOException { - if(host == null) { - throw new NullPointerException("host to verify is null"); - } - - ssl.startHandshake(); - SSLSession session = ssl.getSession(); - if(session == null) { - // In our experience this only happens under IBM 1.4.x when - // spurious (unrelated) certificates show up in the server' - // chain. Hopefully this will unearth the real problem: - InputStream in = ssl.getInputStream(); - in.available(); - /* - If you're looking at the 2 lines of code above because - you're running into a problem, you probably have two - options: - - #1. Clean up the certificate chain that your server - is presenting (e.g. edit "/etc/apache2/server.crt" - or wherever it is your server's certificate chain - is defined). - - OR - - #2. Upgrade to an IBM 1.5.x or greater JVM, or switch - to a non-IBM JVM. - */ - - // If ssl.getInputStream().available() didn't cause an - // exception, maybe at least now the session is available? - session = ssl.getSession(); - if(session == null) { - // If it's still null, probably a startHandshake() will - // unearth the real problem. - ssl.startHandshake(); - - // Okay, if we still haven't managed to cause an exception, - // might as well go for the NPE. Or maybe we're okay now? - session = ssl.getSession(); - } - } - - Certificate[] certs = session.getPeerCertificates(); - X509Certificate x509 = (X509Certificate) certs[0]; - verify(host, x509); - } - - public final boolean verify(String host, SSLSession session) { - try { - Certificate[] certs = session.getPeerCertificates(); - X509Certificate x509 = (X509Certificate) certs[0]; - verify(host, x509); - return true; - } - catch(SSLException e) { - return false; - } - } - - public final void verify(String host, X509Certificate cert) - throws SSLException { - String[] cns = getCNs(cert); - String[] subjectAlts = getDNSSubjectAlts(cert); - verify(host, cns, subjectAlts); - } - - public final void verify(final String host, final String[] cns, - final String[] subjectAlts, - final boolean strictWithSubDomains) - throws SSLException { - - // Build the list of names we're going to check. Our DEFAULT and - // STRICT implementations of the HostnameVerifier only use the - // first CN provided. All other CNs are ignored. - // (Firefox, wget, curl, Sun Java 1.4, 5, 6 all work this way). - LinkedList<String> names = new LinkedList<String>(); - 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<String> 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.lastIndexOf('.') >= 0 && - acceptableCountryWildcard(cn) && - !InetAddressUtils.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) { - LinkedList<String> cnList = new LinkedList<String>(); - /* - Sebastian Hauer's original StrictSSLProtocolSocketFactory used - getName() and had the following comment: - - Parses a X.500 distinguished name for the value of the - "Common Name" field. This is done a bit sloppy right - now and should probably be done a bit more according to - <code>RFC 2253</code>. - - I've noticed that toString() seems to do a better job than - getName() on these X500Principal objects, so I'm hoping that - addresses Sebastian's concern. - - For example, getName() gives me this: - 1.2.840.113549.1.9.1=#16166a756c6975736461766965734063756362632e636f6d - - whereas toString() gives me this: - EMAILADDRESS=juliusdavies@cucbc.com - - Looks like toString() even works with non-ascii domain names! - I tested it with "花子.co.jp" and it worked fine. - */ - String subjectPrincipal = cert.getSubjectX500Principal().toString(); - StringTokenizer st = new StringTokenizer(subjectPrincipal, ","); - while(st.hasMoreTokens()) { - String tok = st.nextToken(); - int x = tok.indexOf("CN="); - if(x >= 0) { - cnList.add(tok.substring(x + 3)); - } - } - 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. - * <p/> - * Note: Java doesn't appear able to extract international characters - * from the SubjectAlts. It can only extract international characters - * from the CN field. - * <p/> - * (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<String> subjectAltList = new LinkedList<String>(); - Collection<List<?>> 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; - } - -} |