Messed up cast.
[java-idp.git] / src / edu / internet2 / middleware / shibboleth / common / provider / ShibbolethTrust.java
index 8a97602..f0175e2 100644 (file)
@@ -1,31 +1,23 @@
 /*
- * The Shibboleth License, Version 1. Copyright (c) 2002 University Corporation for Advanced Internet Development, Inc.
- * All rights reserved Redistribution and use in source and binary forms, with or without modification, are permitted
- * provided that the following conditions are met: Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials
- * provided with the distribution, if any, must include the following acknowledgment: "This product includes software
- * developed by the University Corporation for Advanced Internet Development <http://www.ucaid.edu> Internet2 Project.
- * Alternately, this acknowledegement may appear in the software itself, if and wherever such third-party
- * acknowledgments normally appear. Neither the name of Shibboleth nor the names of its contributors, nor Internet2, nor
- * the University Corporation for Advanced Internet Development, Inc., nor UCAID may be used to endorse or promote
- * products derived from this software without specific prior written permission. For written permission, please contact
- * shibboleth@shibboleth.org Products derived from this software may not be called Shibboleth, Internet2, UCAID, or the
- * University Corporation for Advanced Internet Development, nor may Shibboleth appear in their name, without prior
- * written permission of the University Corporation for Advanced Internet Development. THIS SOFTWARE IS PROVIDED BY THE
- * COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND WITH ALL FAULTS. ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT ARE
- * DISCLAIMED AND THE ENTIRE RISK OF SATISFACTORY QUALITY, PERFORMANCE, ACCURACY, AND EFFORT IS WITH LICENSEE. IN NO
- * EVENT SHALL THE COPYRIGHT OWNER, CONTRIBUTORS OR THE UNIVERSITY CORPORATION FOR ADVANCED INTERNET DEVELOPMENT, INC.
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
- * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * Copyright [2005] [University Corporation for Advanced Internet Development, Inc.]
+ *
+ * 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 edu.internet2.middleware.shibboleth.common.provider;
 
 import java.io.ByteArrayInputStream;
+import java.io.IOException;
 import java.security.GeneralSecurityException;
 import java.security.cert.CertPathBuilder;
 import java.security.cert.CertPathValidator;
@@ -48,8 +40,6 @@ import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
 
 import javax.security.auth.x500.X500Principal;
 
@@ -60,9 +50,19 @@ import org.apache.xml.security.keys.content.KeyName;
 import org.apache.xml.security.keys.content.X509Data;
 import org.apache.xml.security.keys.content.x509.XMLX509CRL;
 import org.apache.xml.security.keys.content.x509.XMLX509Certificate;
+import org.apache.xmlbeans.XmlException;
+import org.bouncycastle.asn1.ASN1InputStream;
+import org.bouncycastle.asn1.DERObject;
+import org.bouncycastle.asn1.DERObjectIdentifier;
+import org.bouncycastle.asn1.DERSequence;
+import org.bouncycastle.asn1.DERSet;
+import org.bouncycastle.asn1.DERString;
 import org.opensaml.SAMLException;
 import org.opensaml.SAMLSignedObject;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
 
+import edu.internet2.middleware.shibboleth.common.ShibbolethConfigurationException;
 import edu.internet2.middleware.shibboleth.common.Trust;
 import edu.internet2.middleware.shibboleth.metadata.EntitiesDescriptor;
 import edu.internet2.middleware.shibboleth.metadata.EntityDescriptor;
@@ -71,6 +71,7 @@ import edu.internet2.middleware.shibboleth.metadata.ExtendedEntityDescriptor;
 import edu.internet2.middleware.shibboleth.metadata.KeyAuthority;
 import edu.internet2.middleware.shibboleth.metadata.KeyDescriptor;
 import edu.internet2.middleware.shibboleth.metadata.RoleDescriptor;
+import edu.internet2.middleware.shibboleth.serviceprovider.PluggableConfigurationComponent;
 
 /**
  * <code>Trust</code> implementation that does PKIX validation against key authorities included in shibboleth-specific
@@ -78,10 +79,10 @@ import edu.internet2.middleware.shibboleth.metadata.RoleDescriptor;
  * 
  * @author Walter Hoehn
  */
-public class ShibbolethTrust extends BasicTrust implements Trust {
+public class ShibbolethTrust extends BasicTrust implements Trust, PluggableConfigurationComponent {
 
        private static Logger log = Logger.getLogger(ShibbolethTrust.class.getName());
-       private static Pattern regex = Pattern.compile(".*?CN=([^,/]+).*");
+       private static final String CN_OID = "2.5.4.3";
 
        /*
         * @see edu.internet2.middleware.shibboleth.common.Trust#validate(java.security.cert.X509Certificate,
@@ -366,6 +367,30 @@ public class ShibbolethTrust extends BasicTrust implements Trust {
                return false;
        }
 
+       public static String[] getCredentialNames(X509Certificate certificate) {
+               ArrayList names = new ArrayList();
+               names.add(certificate.getSubjectX500Principal().getName(X500Principal.RFC2253));
+               try {
+                       Collection altNames = certificate.getSubjectAlternativeNames();
+                       if (altNames != null) {
+                               for (Iterator nameIterator = altNames.iterator(); nameIterator.hasNext();) {
+                                       List altName = (List) nameIterator.next();
+                                       if (altName.get(0).equals(new Integer(2))) { // 2 is DNS
+                                               names.add(altName.get(1));
+                                       }
+                                       else if (altName.get(0).equals(new Integer(6))) { // 6 is URI
+                                               names.add(altName.get(1));
+                                       }
+                               }
+                       }
+               } catch (CertificateParsingException e1) {
+                       log.error("Encountered an problem trying to extract Subject Alternate "
+                                       + "Name from supplied certificate: " + e1);
+               }
+               names.add(getHostNameFromDN(certificate.getSubjectX500Principal()));
+               return (String[]) names.toArray(new String[1]);
+       }
+       
        private static boolean matchProviderId(X509Certificate certificate, String id) {
 
                // Try matching against URI Subject Alt Names
@@ -375,7 +400,7 @@ public class ShibbolethTrust extends BasicTrust implements Trust {
                                for (Iterator nameIterator = altNames.iterator(); nameIterator.hasNext();) {
                                        List altName = (List) nameIterator.next();
                                        if (altName.get(0).equals(new Integer(6))) { // 6 is URI
-                                               if (altName.get(0).equals(id)) {
+                                               if (altName.get(1).equals(id)) {
                                                        log.debug("Entity ID matched against SubjectAltName.");
                                                        return true;
                                                }
@@ -397,14 +422,61 @@ public class ShibbolethTrust extends BasicTrust implements Trust {
                return false;
        }
 
-       private static String getHostNameFromDN(X500Principal dn) {
+       public static String getHostNameFromDN(X500Principal dn) {
+
+               // Parse the ASN.1 representation of the dn and grab the last CN component that we find
+               // We used to do this with the dn string, but the JDK's default parsing caused problems with some DNs
+               try {
+                       ASN1InputStream asn1Stream = new ASN1InputStream(dn.getEncoded());
+                       DERObject parent = asn1Stream.readObject();
+
+                       if (!(parent instanceof DERSequence)) {
+                               log.error("Unable to extract host name name from certificate subject DN: incorrect ASN.1 encoding.");
+                               return null;
+                       }
+
+                       String cn = null;
+                       for (int i = 0; i < ((DERSequence) parent).size(); i++) {
+                               DERObject dnComponent = ((DERSequence) parent).getObjectAt(i).getDERObject();
+                               if (!(dnComponent instanceof DERSet)) {
+                                       log.debug("No DN components.");
+                                       continue;
+                               }
+
+                               // Each DN component is a set
+                               for (int j = 0; j < ((DERSet) dnComponent).size(); j++) {
+                                       DERObject grandChild = ((DERSet) dnComponent).getObjectAt(j).getDERObject();
+
+                                       if (((DERSequence) grandChild).getObjectAt(0) != null
+                                                       && ((DERSequence) grandChild).getObjectAt(0).getDERObject() instanceof DERObjectIdentifier) {
+                                               DERObjectIdentifier componentId = (DERObjectIdentifier) ((DERSequence) grandChild).getObjectAt(
+                                                               0).getDERObject();
+
+                                               if (CN_OID.equals(componentId.getId())) {
+                                                       // OK, this dn component is actually a cn attribute
+                                                       if (((DERSequence) grandChild).getObjectAt(1) != null
+                                                                       && ((DERSequence) grandChild).getObjectAt(1).getDERObject() instanceof DERString) {
+                                                               cn = ((DERString) ((DERSequence) grandChild).getObjectAt(1).getDERObject()).getString();
+                                                       }
+                                               }
+                                       }
+                               }
+                       }
+                       asn1Stream.close();
+                       return cn;
 
-               Matcher matches = regex.matcher(dn.getName(X500Principal.RFC2253));
-               if (!matches.find() || matches.groupCount() > 1) {
-                       log.error("Unable to extract host name name from certificate subject DN.");
+               } catch (IOException e) {
+                       log.error("Unable to extract host name name from certificate subject DN: ASN.1 parsing failed: " + e);
                        return null;
                }
-               return matches.group(1);
+       }
+
+       public void initialize(Node dom) throws XmlException, ShibbolethConfigurationException {
+               
+       }
+
+       public void initialize(Element dom) throws SAMLException, XmlException, ShibbolethConfigurationException {
+               
        }
 
 }
\ No newline at end of file