EncryptionActionExecuter.java

package com.extendedencryption.action.executer;
/*
 * Project: Alfresco Encryption Extension Module , part of the Creative Summer
 * This code was developped by a group of 3 students from UET-VNU .
 * License   : GNU General Public License, version 2 (http://www.gnu.org/licenses/gpl-2.0.html)
 */
import java.io.IOException;
import java.util.List;

import com.extendedencryption.util.AES;
import com.extendedencryption.util.Tools;

import org.alfresco.repo.action.executer.ActionExecuterAbstractBase;
import org.alfresco.service.cmr.action.Action;
import org.alfresco.service.cmr.action.ParameterDefinition;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.NodeService;

public class EncryptionActionExecuter extends BaseExecuter {

    public static final String NAME = "encryption-action";
    private NodeService nodeService;

    protected void addParameterDefinitions(List<ParameterDefinition> paramList) {
        super.addParameterDefinitions(paramList);
    }

    public void executeImpl(Action ruleAction, NodeRef actionedUponNodeRef) {
        byte[] key = null;
        String inputPassword = (String) ruleAction.getParameterValue(BaseExecuter.PARAM_PASS);        
        
        if (inputPassword.isEmpty()) {
            inputPassword = "123";
        }
        
        String inputMD5Password = Tools.convertToMD5(inputPassword);
        
        
        try {
            key = inputMD5Password.getBytes();
        } catch (NullPointerException e1) {
            e1.printStackTrace();
        }        
        
        byte[] data = AES.encrypt(super.getNodeContent(actionedUponNodeRef), key);  
        super.write(actionedUponNodeRef, data);
        
        ruleAction.setParameterValue(BaseExecuter.PARAM_ACTIVE, true);
        ruleAction.setParameterValue(BaseExecuter.PARAM_PASS, inputMD5Password);        
        super.executeImpl(ruleAction, actionedUponNodeRef);        
    } // end if isEmpty
}