/*
* Copyright 2010, 2011 sshj contributors
*
* 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 net.schmizz.sshj.userauth.method;
import net.schmizz.sshj.common.Message;
import net.schmizz.sshj.common.SSHPacket;
import net.schmizz.sshj.transport.TransportException;
import net.schmizz.sshj.userauth.UserAuthException;
import net.schmizz.sshj.userauth.password.AccountResource;
import net.schmizz.sshj.userauth.password.PasswordFinder;
/** Implements the {@code password} authentication method. Password-change request handling is not currently supported. */
public class AuthPassword
extends AbstractAuthMethod {
private final PasswordFinder pwdf;
public AuthPassword(PasswordFinder pwdf) {
super("password");
this.pwdf = pwdf;
}
@Override
public SSHPacket buildReq()
throws UserAuthException {
final AccountResource accountResource = makeAccountResource();
log.info("Requesting password for {}", accountResource);
return super.buildReq() // the generic stuff
.putBoolean(false) // no, we are not responding to a CHANGEREQ
.putSensitiveString(pwdf.reqPassword(accountResource));
}
@Override
public void handle(Message cmd, SSHPacket buf)
throws UserAuthException, TransportException {
if (cmd == Message.USERAUTH_60)
throw new UserAuthException("Password change request received; unsupported operation");
else
super.handle(cmd, buf);
}
/**
* Returns {@code true} if the associated {@link PasswordFinder} tells that we should retry with a new password that
* it will supply.
*/
@Override
public boolean shouldRetry() {
return pwdf.shouldRetry(makeAccountResource());
}
}