org.apache.axis.components.net.JSSESocketFactory Maven / Gradle / Ivy
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/*
* Copyright 2001-2004 The Apache Software Foundation.
*
* Licensed 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.
*/
package org.apache.axis.components.net;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.security.cert.Certificate;
import java.security.cert.CertificateParsingException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Locale;
import java.util.regex.Pattern;
import javax.naming.InvalidNameException;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.ldap.LdapName;
import javax.naming.ldap.Rdn;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import org.apache.axis.utils.Messages;
import org.apache.axis.utils.StringUtils;
import org.apache.axis.utils.XMLUtils;
/**
* SSL socket factory. It _requires_ a valid RSA key and
* JSSE. (borrowed code from tomcat)
*
* THIS CODE STILL HAS DEPENDENCIES ON sun.* and com.sun.*
*
* @author Davanum Srinivas ([email protected])
*/
public class JSSESocketFactory extends DefaultSocketFactory implements SecureSocketFactory {
// This is a a sorted list, if you insert new elements do it orderdered.
private final static String[] BAD_COUNTRY_2LDS =
{"ac", "co", "com", "ed", "edu", "go", "gouv", "gov", "info",
"lg", "ne", "net", "or", "org"};
/** Field sslFactory */
protected SSLSocketFactory sslFactory = null;
/**
* Constructor JSSESocketFactory
*
* @param attributes
*/
public JSSESocketFactory(Hashtable attributes) {
super(attributes);
}
/**
* Initialize the SSLSocketFactory
* @throws IOException
*/
protected void initFactory() throws IOException {
sslFactory = (SSLSocketFactory)SSLSocketFactory.getDefault();
}
/**
* creates a secure socket
*
* @param host
* @param port
* @param otherHeaders
* @param useFullURL
*
* @return Socket
* @throws Exception
*/
public Socket create(
String host, int port, StringBuffer otherHeaders, BooleanHolder useFullURL)
throws Exception {
if (sslFactory == null) {
initFactory();
}
if (port == -1) {
port = 443;
}
TransportClientProperties tcp = TransportClientPropertiesFactory.create("https");
boolean hostInNonProxyList = isHostInNonProxyList(host, tcp.getNonProxyHosts());
Socket sslSocket = null;
if (tcp.getProxyHost().length() == 0 || hostInNonProxyList) {
// direct SSL connection
sslSocket = sslFactory.createSocket(host, port);
} else {
// Default proxy port is 80, even for https
int tunnelPort = (tcp.getProxyPort().length() != 0)
? Integer.parseInt(tcp.getProxyPort())
: 80;
if (tunnelPort < 0)
tunnelPort = 80;
// Create the regular socket connection to the proxy
Socket tunnel = new Socket(tcp.getProxyHost(), tunnelPort);
// The tunnel handshake method (condensed and made reflexive)
OutputStream tunnelOutputStream = tunnel.getOutputStream();
PrintWriter out = new PrintWriter(
new BufferedWriter(new OutputStreamWriter(tunnelOutputStream)));
// More secure version... engage later?
// PasswordAuthentication pa =
// Authenticator.requestPasswordAuthentication(
// InetAddress.getByName(tunnelHost),
// tunnelPort, "SOCK", "Proxy","HTTP");
// if(pa == null){
// printDebug("No Authenticator set.");
// }else{
// printDebug("Using Authenticator.");
// tunnelUser = pa.getUserName();
// tunnelPassword = new String(pa.getPassword());
// }
out.print("CONNECT " + host + ":" + port + " HTTP/1.0\r\n"
+ "User-Agent: AxisClient");
if (tcp.getProxyUser().length() != 0 &&
tcp.getProxyPassword().length() != 0) {
// add basic authentication header for the proxy
String encodedPassword = XMLUtils.base64encode((tcp.getProxyUser()
+ ":"
+ tcp.getProxyPassword()).getBytes());
out.print("\nProxy-Authorization: Basic " + encodedPassword);
}
out.print("\nContent-Length: 0");
out.print("\nPragma: no-cache");
out.print("\r\n\r\n");
out.flush();
InputStream tunnelInputStream = tunnel.getInputStream();
if (log.isDebugEnabled()) {
log.debug(Messages.getMessage("isNull00", "tunnelInputStream",
"" + (tunnelInputStream
== null)));
}
String replyStr = "";
// Make sure to read all the response from the proxy to prevent SSL negotiation failure
// Response message terminated by two sequential newlines
int newlinesSeen = 0;
boolean headerDone = false; /* Done on first newline */
while (newlinesSeen < 2) {
int i = tunnelInputStream.read();
if (i < 0) {
throw new IOException("Unexpected EOF from proxy");
}
if (i == '\n') {
headerDone = true;
++newlinesSeen;
} else if (i != '\r') {
newlinesSeen = 0;
if (!headerDone) {
replyStr += String.valueOf((char) i);
}
}
}
if (StringUtils.startsWithIgnoreWhitespaces("HTTP/1.0 200", replyStr) &&
StringUtils.startsWithIgnoreWhitespaces("HTTP/1.1 200", replyStr)) {
throw new IOException(Messages.getMessage("cantTunnel00",
new String[]{
tcp.getProxyHost(),
"" + tunnelPort,
replyStr}));
}
// End of condensed reflective tunnel handshake method
sslSocket = sslFactory.createSocket(tunnel, host, port, true);
if (log.isDebugEnabled()) {
log.debug(Messages.getMessage("setupTunnel00",
tcp.getProxyHost(),
"" + tunnelPort));
}
}
((SSLSocket) sslSocket).startHandshake();
if (log.isDebugEnabled()) {
log.debug(Messages.getMessage("createdSSL00"));
}
verifyHostName(host, (SSLSocket) sslSocket);
return sslSocket;
}
/**
* Verifies that the given hostname in certicifate is the hostname we are trying to connect to.
* This resolves CVE-2012-5784 and CVE-2014-3596
* @param host
* @param ssl
* @throws IOException
*/
private static void verifyHostName(String host, SSLSocket ssl)
throws IOException {
if (host == null) {
throw new IllegalArgumentException("host to verify was null");
}
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's 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();
verifyHostName(host.trim().toLowerCase(Locale.US), (X509Certificate) certs[0]);
}
/**
* Extract the names from the certificate and tests host matches one of them
* @param host
* @param cert
* @throws SSLException
*/
private static void verifyHostName(final String host, X509Certificate cert)
throws SSLException {
// I'm okay with being case-insensitive when comparing the host we used
// to establish the socket to the hostname in the certificate.
// Don't trim the CN, though.
String[] cns = getCNs(cert);
String[] subjectAlts = getDNSSubjectAlts(cert);
verifyHostName(host, cns, subjectAlts);
}
/**
* Extract all alternative names from a certificate.
* @param cert
* @return
*/
private static String[] getDNSSubjectAlts(X509Certificate cert) {
LinkedList subjectAltList = new LinkedList();
Collection c = null;
try {
c = cert.getSubjectAlternativeNames();
} catch (CertificateParsingException cpe) {
// Should probably log.debug() this?
cpe.printStackTrace();
}
if (c != null) {
Iterator it = c.iterator();
while (it.hasNext()) {
List list = (List) it.next();
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 new String[0];
}
}
/**
* Verifies
* @param host
* @param cn
* @param subjectAlts
* @throws SSLException
*/
private static void verifyHostName(final String host, String[] cns, String[] subjectAlts)throws SSLException{
StringBuffer cnTested = new StringBuffer();
for (int i = 0; i < subjectAlts.length; i++){
String name = subjectAlts[i];
if (name != null) {
name = name.toLowerCase(Locale.US);
if (verifyHostName(host, name)){
return;
}
cnTested.append("/").append(name);
}
}
for (int i = 0; i < cns.length; i++) {
String cn = cns[i];
if (cn != null) {
cn = cn.toLowerCase(Locale.US);
if (verifyHostName(host, cn)) {
return;
}
cnTested.append("/").append(cn);
}
}
throw new SSLException("hostname in certificate didn't match: <"
+ host + "> != <" + cnTested + ">");
}
private static boolean verifyHostName(final String host, final String cn){
if (doWildCard(cn) && !isIPAddress(host)) {
return matchesWildCard(cn, host);
}
return host.equalsIgnoreCase(cn);
}
private static boolean doWildCard(String cn) {
// Contains a wildcard
// wildcard in the first block
// not an ipaddress (ip addres must explicitily be equal)
// not using 2nd level common tld : ex: not for *.co.uk
String parts[] = cn.split("\\.");
return parts.length >= 3 &&
parts[0].endsWith("*") &&
acceptableCountryWildcard(cn) &&
!isIPAddress(cn);
}
private static final Pattern IPV4_PATTERN =
Pattern.compile("^(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)(\\.(25[0-5]|2[0-4]\\d|[0-1]?\\d?\\d)){3}$");
private static final Pattern IPV6_STD_PATTERN =
Pattern.compile("^(?:[0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$");
private static final Pattern IPV6_HEX_COMPRESSED_PATTERN =
Pattern.compile("^((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)::((?:[0-9A-Fa-f]{1,4}(?::[0-9A-Fa-f]{1,4})*)?)$");
private static boolean isIPAddress(final String hostname) {
return hostname != null
&& (
IPV4_PATTERN.matcher(hostname).matches()
|| IPV6_STD_PATTERN.matcher(hostname).matches()
|| IPV6_HEX_COMPRESSED_PATTERN.matcher(hostname).matches()
);
}
private static boolean acceptableCountryWildcard(final String cn) {
// The CN better have at least two dots if it wants wildcard action,
// but can't be [*.co.uk] or [*.co.jp] or [*.org.uk], etc...
// The [*.co.uk] problem is an interesting one. Should we just
// hope that CA's would never foolishly allow such a
// certificate to happen?
String[] parts = cn.split("\\.");
// Only checks for 3 levels, with country code of 2 letters.
if (parts.length > 3 || parts[parts.length - 1].length() != 2) {
return true;
}
String countryCode = parts[parts.length - 2];
return Arrays.binarySearch(BAD_COUNTRY_2LDS, countryCode) < 0;
}
private static boolean matchesWildCard(final String cn,
final String hostName) {
String parts[] = cn.split("\\.");
boolean match = false;
String firstpart = parts[0];
if (firstpart.length() > 1) {
// server∗
// e.g. server
String prefix = firstpart.substring(0, firstpart.length() - 1);
// skipwildcard part from cn
String suffix = cn.substring(firstpart.length());
// skip wildcard part from host
String hostSuffix = hostName.substring(prefix.length());
match = hostName.startsWith(prefix) && hostSuffix.endsWith(suffix);
} else {
match = hostName.endsWith(cn.substring(1));
}
if (match) {
// I f we ’ r e i n s t r i c t mode ,
// [ ∗.foo.com] is not allowed to match [a.b.foo.com]
match = countDots(hostName) == countDots(cn);
}
return match;
}
private static int countDots(final String data) {
int dots = 0;
for (int i = 0; i < data.length(); i++) {
if (data.charAt(i) == '.') {
dots += 1;
}
}
return dots;
}
private static String[] getCNs(X509Certificate cert) {
// Note: toString() seems to do a better job than getName()
//
// For example, getName() gives me this:
// 1.2.840.113549.1.9.1=#16166a756c6975736461766965734063756362632e636f6d
//
// whereas toString() gives me this:
// [email protected]
String subjectPrincipal = cert.getSubjectX500Principal().toString();
return getCNs(subjectPrincipal);
}
private static String[] getCNs(String subjectPrincipal) {
if (subjectPrincipal == null) {
return null;
}
final List cns = new ArrayList();
try {
final LdapName subjectDN = new LdapName(subjectPrincipal);
final List rdns = subjectDN.getRdns();
for (int i = rdns.size() - 1; i >= 0; i--) {
final Rdn rds = (Rdn) rdns.get(i);
final Attributes attributes = rds.toAttributes();
final Attribute cn = attributes.get("cn");
if (cn != null) {
try {
final Object value = cn.get();
if (value != null) {
cns.add(value.toString());
}
}
catch (NamingException ignore) {}
}
}
}
catch (InvalidNameException ignore) { }
return cns.isEmpty() ? null : (String[]) cns.toArray(new String[ cns.size() ]);
}
}
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