Adding BindAuthenticator2 from jenkins@95b0281f5ff1641b43ee2239ee469001b3fba016; ought to have been moved in jenkinsci/jenkins@9b4cd99 or jenkinsci/jenkins@32cba8f

Author: jglick

src/main/java/org/acegisecurity/providers/ldap/authenticator/BindAuthenticator2.java

@@ -0,0 +1,62 @@
+/*
+ * The MIT License
+ *
+ * Copyright (c) 2004-2009, Sun Microsystems, Inc., Kohsuke Kawaguchi
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package org.acegisecurity.providers.ldap.authenticator;
+
+import org.acegisecurity.ldap.InitialDirContextFactory;
+import org.acegisecurity.userdetails.ldap.LdapUserDetails;
+
+import java.util.logging.Logger;
+import java.util.logging.Level;
+
+/**
+ * {@link BindAuthenticator} with improved diagnostics.
+ *
+ * @author Kohsuke Kawaguchi
+ */
+public class BindAuthenticator2 extends BindAuthenticator {
+    /**
+     * If we ever had a successful authentication,
+     */
+    private boolean hadSuccessfulAuthentication;
+
+    public BindAuthenticator2(InitialDirContextFactory initialDirContextFactory) {
+        super(initialDirContextFactory);
+    }
+
+    @Override
+    public LdapUserDetails authenticate(String username, String password) {
+        LdapUserDetails user = super.authenticate(username, password);
+        hadSuccessfulAuthentication = true;
+        return user;
+    }
+
+    @Override
+    void handleBindException(String userDn, String username, Throwable cause) {
+        LOGGER.log(hadSuccessfulAuthentication? Level.FINE : Level.WARNING,
+            "Failed to bind to LDAP: userDn"+userDn+"  username="+username,cause);
+        super.handleBindException(userDn, username, cause);
+    }
+
+    private static final Logger LOGGER = Logger.getLogger(BindAuthenticator2.class.getName());
+}