X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.cms%2Fsrc%2Forg%2Fargeo%2Fcms%2Fauth%2FRemoteAuthUtils.java;h=0bb199dfdbfddcf4fb93eda4e4363834f9afa77b;hb=dca2b13e0e3ca3e7a9469e089b980c48c880ad1a;hp=d51997d74fca518340fc5f601e649c7e30dd6480;hpb=4185ff8826f893a4a1f054f61a11b89333c3e85d;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.cms/src/org/argeo/cms/auth/RemoteAuthUtils.java b/org.argeo.cms/src/org/argeo/cms/auth/RemoteAuthUtils.java
index d51997d74..0bb199dfd 100644
--- a/org.argeo.cms/src/org/argeo/cms/auth/RemoteAuthUtils.java
+++ b/org.argeo.cms/src/org/argeo/cms/auth/RemoteAuthUtils.java
@@ -3,19 +3,24 @@ package org.argeo.cms.auth;
 import java.security.AccessControlContext;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
+import java.util.Base64;
 import java.util.function.Supplier;
 
 import javax.security.auth.Subject;
+import javax.security.auth.kerberos.KerberosTicket;
 
 import org.argeo.api.cms.CmsSession;
-import org.argeo.cms.osgi.CmsOsgiUtils;
-import org.osgi.framework.BundleContext;
-import org.osgi.framework.FrameworkUtil;
+import org.argeo.cms.internal.runtime.CmsContextImpl;
+import org.ietf.jgss.GSSContext;
+import org.ietf.jgss.GSSException;
+import org.ietf.jgss.GSSManager;
+import org.ietf.jgss.GSSName;
+import org.ietf.jgss.Oid;
 
 /** Remote authentication utilities. */
 public class RemoteAuthUtils {
 	static final String REMOTE_USER = "org.osgi.service.http.authentication.remote.user";
-	private static BundleContext bundleContext = FrameworkUtil.getBundle(RemoteAuthUtils.class).getBundleContext();
+//	private static BundleContext bundleContext = FrameworkUtil.getBundle(RemoteAuthUtils.class).getBundleContext();
 
 	/**
 	 * Execute this supplier, using the CMS class loader as context classloader.
@@ -58,7 +63,53 @@ public class RemoteAuthUtils {
 	public static CmsSession getCmsSession(RemoteAuthRequest req) {
 		Subject subject = Subject
 				.getSubject((AccessControlContext) req.getAttribute(AccessControlContext.class.getName()));
-		CmsSession cmsSession = CmsOsgiUtils.getCmsSession(bundleContext, subject);
+		CmsSession cmsSession = CmsContextImpl.getCmsContext().getCmsSession(subject);
 		return cmsSession;
 	}
+
+	private final static Oid KERBEROS_OID;
+	static {
+		try {
+			KERBEROS_OID = new Oid("1.3.6.1.5.5.2");
+		} catch (GSSException e) {
+			throw new IllegalStateException("Cannot create Kerberos OID", e);
+		}
+	}
+
+	public static String getGssToken(Subject subject, String serverPrinc) {
+		if (subject.getPrivateCredentials(KerberosTicket.class).isEmpty())
+			throw new IllegalArgumentException("Subject " + subject + " is not GSS authenticated.");
+		return Subject.doAs(subject, (PrivilegedAction<String>) () -> {
+			GSSContext context = null;
+			String tokenStr = null;
+
+			try {
+				// Get service's principal name
+				GSSManager manager = GSSManager.getInstance();
+				GSSName serverName = manager.createName(serverPrinc, GSSName.NT_HOSTBASED_SERVICE, KERBEROS_OID);
+
+				// Get the context for authentication
+				context = manager.createContext(serverName, KERBEROS_OID, null, GSSContext.DEFAULT_LIFETIME);
+				// context.requestMutualAuth(true); // Request mutual authentication
+				// context.requestConf(true); // Request confidentiality
+				context.requestCredDeleg(true);
+
+				byte[] token = new byte[0];
+
+				// token is ignored on the first call
+				token = context.initSecContext(token, 0, token.length);
+
+				// Send a token to the server if one was generated by
+				// initSecContext
+				if (token != null) {
+					tokenStr = Base64.getEncoder().encodeToString(token);
+					// complete=true;
+				}
+				return tokenStr;
+
+			} catch (GSSException e) {
+				throw new IllegalStateException("Cannot authenticate to " + serverPrinc, e);
+			}
+		});
+	}
 }