package org.apache.maven.wagon.providers.ssh.interactive;

 /*

  * Copyright 2001-2005 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.

  */

 import com.jcraft.jsch.UIKeyboardInteractive;

 import org.apache.maven.wagon.authentication.AuthenticationInfo;

 /**

  * A conservative <code>UIKeyboardInteractive</code> that avoids real

  * user interaction :). This implementation expects only one prompt with the

  * word password in it.

  * <p/>

  * <code>UIKeyboardInteractive</code> are usefull when you don't use user with

  * password authentication with a server that use keyboard-interactive and

  * doesn't allow password method <code>PasswordAuthentication no</code>.

  *

  * @author Juan F. Codagnone

  * @since Sep 21, 2005

  */

 public class TraditionalUIKeyboardInteractive

     implements UIKeyboardInteractive

 {

     private final AuthenticationInfo authInfo;

     public TraditionalUIKeyboardInteractive( AuthenticationInfo authInfo )

     {

         this.authInfo = authInfo;

     }

     /**

      * @see UIKeyboardInteractive#promptKeyboardInteractive(String, String,

      *      String, String[], boolean[])

      */

     public String[] promptKeyboardInteractive( String destination, String name, String instruction, String[] prompt,

                                                boolean[] echo )

     {

         String[] ret;

         if ( prompt.length == echo.length && prompt.length == 1 && !echo[0] &&

             prompt[0].toLowerCase().indexOf( "password" ) > -1 )

         {

             ret = new String[1];

             ret[0] = authInfo.getPassword();

         }

         else

         {

             // jsch-0.1.21/examples/UserAuthKI.java returns null to cancel

             ret = null;

         }

         return ret;

     }

 }