1 files changed, 110 insertions, 0 deletions
diff --git a/bkucommon/src/main/java/at/gv/egiz/bku/accesscontroller/AuthenticationClassifier.java b/bkucommon/src/main/java/at/gv/egiz/bku/accesscontroller/AuthenticationClassifier.java
new file mode 100644
index 00000000..61d3d7a5
--- /dev/null
+++ b/bkucommon/src/main/java/at/gv/egiz/bku/accesscontroller/AuthenticationClassifier.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2008 Federal Chancellery Austria and
+ * Graz University of Technology
+ *
+ * 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 at.gv.egiz.bku.accesscontroller;
+
+import static at.gv.egiz.bku.accesscontroller.AuthenticationClass.ANONYMOUS;
+import static at.gv.egiz.bku.accesscontroller.AuthenticationClass.CERTIFIED;
+import static at.gv.egiz.bku.accesscontroller.AuthenticationClass.CERTIFIED_GOV_AGENCY;
+import static at.gv.egiz.bku.accesscontroller.AuthenticationClass.PSEUDO_ANONYMOUS;
+
+import java.net.URL;
+import java.security.cert.CertificateParsingException;
+import java.security.cert.X509Certificate;
+import java.util.Collection;
+import java.util.List;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+public class AuthenticationClassifier {
+	private static AuthenticationClassifier instance = new AuthenticationClassifier();
+	private static Log log = LogFactory.getLog(AuthenticationClassifier.class);
+	private final static String GOV_DOMAIN = ".gv.at";
+
+	private AuthenticationClassifier() {
+	}
+
+	public static boolean isGovAgency(X509Certificate cert) {
+		String[] rdns = (cert.getSubjectX500Principal().getName()).split(",");
+		for (String rdn : rdns) {
+			if (rdn.startsWith("CN=")) {
+				String dns = rdn.split("=")[1];
+				log.trace("Analyzing cn dn: " + dns);
+				if (dns.endsWith(GOV_DOMAIN)) {
+					return true;
+				}
+			}
+		}
+		try {
+			Collection<List<?>> sanList = cert.getSubjectAlternativeNames();
+			if (sanList != null) {
+				for (List<?> san : sanList) {
+					log.trace("Analyzing subj. alt name: " + san);
+					if ((Integer) san.get(0) == 2) {
+						String dns = (String) san.get(1);
+						if (dns.endsWith(GOV_DOMAIN)) {
+							return true;
+						}
+					}
+				}
+			}
+		} catch (CertificateParsingException e) {
+			log.error(e);
+		}
+		if ((cert.getExtensionValue("1.2.40.0.10.1.1.1") != null)
+        || (cert.getExtensionValue("1.2.40.0.10.1.1.2") != null)) {
+			return true;
+		}
+		return false;
+	}
+
+	/**
+	 * Client Certificates are currently not supported
+	 * 
+	 */
+	protected AuthenticationClass getMyAuthenticationClass(boolean isDataUrl,
+			URL url, X509Certificate cert) {
+		if (isDataUrl) {
+			if (url.getProtocol().equalsIgnoreCase("https")) {
+				if (isGovAgency(cert)) {
+					return CERTIFIED_GOV_AGENCY;
+				}
+				if (cert.getExtensionValue("1.2.40.0.10.1.1.1") != null) {
+					return CERTIFIED_GOV_AGENCY;
+				}
+				return CERTIFIED;
+			} else {
+				return PSEUDO_ANONYMOUS;
+			}
+		} else {
+			return ANONYMOUS;
+		}
+	}
+
+	/**
+	 * 
+	 * @param isDataUrl
+	 * @param url
+	 *          if the url's protocol is https a cert parameter must be provided.
+	 * @param cert
+	 * @return
+	 */
+	public static AuthenticationClass getAuthenticationClass(boolean isDataUrl,
+			URL url, X509Certificate cert) {
+		return instance.getMyAuthenticationClass(isDataUrl, url, cert);
+	}
+}