/**
* Copyright 2011 Google Inc.
*
* 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 org.waveprotocol.box.server.robots.agent;
import com.google.wave.api.Blip;
import org.waveprotocol.box.server.account.HumanAccountDataImpl;
import org.waveprotocol.box.server.authentication.PasswordDigest;
import org.waveprotocol.box.server.persistence.AccountStore;
import org.waveprotocol.box.server.persistence.PersistenceException;
import org.waveprotocol.wave.model.wave.ParticipantId;
import javax.annotation.Nullable;
/**
* Util methods for the robot agents.
*
* @author yurize@apache.org (Yuri Zelikov)
*/
public class RobotAgentUtil {
public static final String CANNOT_CHANGE_PASSWORD_FOR_USER = "Cannot change password for user: ";
public static final String CANNOT_CREATE_USER = "Cannot create user: ";
private RobotAgentUtil() {
}
/**
* Appends a message followed by a new line to the end of the blip.
*
* @param blip the blip.
* @param msg the message.
*/
public static void appendLine(Blip blip, String msg) {
blip.at(blip.getContent().length()).insert(msg + "\n");
}
/**
* Returns the last line of the content if it ends with "\n" or null
* otherwise.
*/
public static String lastEnteredLineOf(@Nullable String blipContent) {
if (blipContent == null || blipContent.isEmpty() || !blipContent.endsWith("\n")) {
return null;
}
blipContent = blipContent.trim();
String[] split = blipContent.split("\n");
return split[split.length - 1];
}
/**
* Changes the user password.
*
* @param newPassword the new password of the user.
* @param participantId the user wave address.
* @param accountStore the account store with user accounts.
* @throws PersistenceException if the persistence layer fails.
* @throws IllegalArgumentException if the user doesn't exist.
*/
public static void changeUserPassword(String newPassword, ParticipantId participantId,
AccountStore accountStore) throws PersistenceException, IllegalArgumentException {
PasswordDigest newPasswordDigest = new PasswordDigest(newPassword.toCharArray());
HumanAccountDataImpl account = new HumanAccountDataImpl(participantId, newPasswordDigest);
if (accountStore.getAccount(participantId) != null) {
accountStore.removeAccount(participantId);
accountStore.putAccount(account);
} else {
throw new IllegalArgumentException(String.format("User %s does not exist on this domain.",
participantId.getAddress()));
}
}
/**
* Creates a new user.
*
* @param accountStore the account store with user accounts.
* @param participantId requested user wave address.
* @param password requested user password
* @throws PersistenceException if the persistence layer fails.
* @throws IllegalArgumentException if the userId is already in use.
*/
public static void createUser(AccountStore accountStore, ParticipantId participantId, String password)
throws PersistenceException, IllegalArgumentException {
if (accountStore.getAccount(participantId) != null) {
throw new IllegalArgumentException(String.format("User %s already exists on this domain.", participantId.getAddress()));
}
HumanAccountDataImpl account = new HumanAccountDataImpl(participantId, new PasswordDigest(password.toCharArray()));
accountStore.putAccount(account);
}
}