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/*-------------------------------------------------------------------------
*
* Copyright (c) 2008-2011, PostgreSQL Global Development Group
*
*
*-------------------------------------------------------------------------
*/
package org.postgresql.gss;
import java.io.IOException;
import javax.security.auth.callback.*;
public class GSSCallbackHandler implements CallbackHandler {
private final String user;
private final String password;
public GSSCallbackHandler(String user, String password)
{
this.user = user;
this.password = password;
}
public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException
{
for (int i=0; i<callbacks.length; i++) {
if (callbacks[i] instanceof TextOutputCallback) {
TextOutputCallback toc = (TextOutputCallback)callbacks[i];
switch (toc.getMessageType()) {
case TextOutputCallback.INFORMATION:
System.out.println("INFO: " + toc.getMessage());
break;
case TextOutputCallback.ERROR:
System.out.println("ERROR: " + toc.getMessage());
break;
case TextOutputCallback.WARNING:
System.out.println("WARNING: " + toc.getMessage());
break;
default:
throw new IOException("Unsupported message type: " + toc.getMessageType());
}
} else if (callbacks[i] instanceof NameCallback) {
NameCallback nc = (NameCallback)callbacks[i];
nc.setName(user);
} else if (callbacks[i] instanceof PasswordCallback) {
PasswordCallback pc = (PasswordCallback)callbacks[i];
if (password == null) {
throw new IOException("No cached kerberos ticket found and no password supplied.");
}
pc.setPassword(password.toCharArray());
} else {
throw new UnsupportedCallbackException(callbacks[i], "Unrecognized Callback");
}
}
}
}
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