jahiausermanagerprovider.java

java 写的一个新闻发布系统

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//            __   .____|    |       \   |    +----+       \
//    _______|  /--|    |    |    -   \  _    |    :    -   \_________
//   \\______: :---|    :    :           |    :    |         \________>
//           |__\---\_____________:______:    :____|____:_____\
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//                 . . . i n   j a h i a   w e   t r u s t . . .
//

package org.jahia.services.usermanager;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Properties;
import java.util.Vector;
import java.util.Set;
import org.jahia.data.JahiaDOMObject;
import org.jahia.exceptions.JahiaException;
import org.jahia.services.JahiaService;
import org.jahia.utils.Base64;


/**
 * The user manager is responsible to manage all the users in the Jahia
 * environment.
 *
 * blablabla .. sait pas quoi dire ....
 *
 * @author  Fulco Houkes
 * @version 2.0
 */
public abstract class JahiaUserManagerProvider extends JahiaService
{
    /** Guest user unique identification name.
     *  Each usermanager should create this special user, who is assigned
     *  automatically for each anonymous session internally in Jahia.
     */
    public static final String  GUEST_USERNAME = "guest";


    //-------------------------------------------------------------------------
    /**
     * This is the method that creates a new user in the system, with all the
     * specified attributes.
     *
     * @param  username    User identification name.
     * @param  password    User password
     * @param  attributes  User additional parameters. If the user has no additional
     *                     attributes, give a NULL pointer to this parameter.
     */
    public abstract JahiaUser createUser (String name, String password, String userKey, int siteID,
            Properties properties);


    //-------------------------------------------------------------------------
    /**
     * This method removes a user from the system. All the user's attributes are
     * remove, and also all the related objects belonging to the user. On success,
     * true is returned and the user parameter is not longer valid. Return false
     * on any failure.
     *
     * @param  user  reference on the user to be deleted.
     */
    public abstract boolean deleteUser (JahiaUser user);


    /**
     * Performs a login of the specified user.
     * @param userKey the user identifier defined in this service properties
     * @param userPassword the password of the user
     * @return boolean true if the login succeeded, false otherwise
     */
    public abstract boolean login(String userKey, String userPassword);

    //-------------------------------------------------------------------------
    /**
     * Load all the user data and attributes. On success a reference on the user
     * is returned, otherwise NULL is returned.
     *
     * @param  int 		 site id
     * @param  username  User's identification name.
     * @return Return a reference on a new created jahiaUser object.
     */
    public abstract JahiaUser lookupUser (int siteID, String name);


    //-------------------------------------------------------------------------
    /**
     * Load all the user data and attributes. On success a reference on the user
     * is returned, otherwise NULL is returned.
     *
     * @return Return a reference on a new created jahiaUser object.
     */
    public abstract JahiaUser lookupUser (String userKey);


    //-------------------------------------------------------------------------
    /**
     * This function checks into the system if the username has already been
     * assigned to another user.
     *
     * @param   username User login name.
     * @return  Return true if the specified username has not been assigned yet,
     *          return false on any failure.
     */
    public abstract boolean userExists (int siteID, String name);

    //-------------------------------------------------------------------------
    /**
     * This method returns the list of all the user names registed into the system.
     *
     * @return Return a vector of strings holding the user identification names.
     */
    public abstract Vector getUsernameList (int siteID);



    //-------------------------------------------------------------------------
    /**
     * This method returns the list of this site's users' keys.
     *
     * @return Return a vector of strings holding the user identification key .
     */
    public abstract Vector getUserList (int siteID);

    //-------------------------------------------------------------------------
    /**
     * This method return all users' keys in the system.
     *
     * @return Return a vector of strings holding the user identification key .
     */
    public abstract Vector getUserList ();


    /**
     * Find users according to a table of name=value properties. If the left
     * side value is "*" for a property then it will be tested against all the
     * properties. ie *=test* will match every property that starts with "test"
     * @param siteID site identifier
     * @param searchCriterias a Properties object that contains search criterias
     * in the format name,value (for example "*"="*" or "username"="*test*") or
     * null to search without criterias
     * @return Set a set of JahiaUser elements that correspond to those
     * search criterias
     */
    public abstract Set searchUsers(int siteID, Properties searchCriterias);


    //--------------------------------------------------------------------------
    // FH       29 Mar. 2001
    //          Initial implementation
    //
    /**
     * Encrypt the specified password using the SHA algorithm.
     *
     * @param   password
     *      String representation of a password.
     *
     * @return
     *      Return a String representation of the password encryption. Return
     *      null on any failure.
     */
    public static String encryptPassword (String password) {

        if (password == null) {
            return null;
        }

        if (password.length() == 0) {
            return null;
        }

        String result = null;

        try {
            MessageDigest md = MessageDigest.getInstance ("SHA-1");
            if (md != null)
            {
                md.reset ();
                md.update (password.getBytes());
                result = new String(Base64.encode (md.digest()));
            }
            md = null;
        }
        catch (NoSuchAlgorithmException ex) {
            result = null;
        }

        return result;
    }


    //-------------------------------------------------------------------------
    /**
     * Return the number of user in the system.
     *
     * @return
     *      Return the number of users in the system.
     */
    public abstract int getNbUsers ()
        throws  JahiaException;

    //-------------------------------------------------------------------------
    /**
     * Return the number of user for a gived site
     *
     * @return
     *      Return the number of users in the system.
     */
    public abstract int getNbUsers (int siteID)
        throws  JahiaException;


    //--------------------------------------------------------------------------
    /**
     * return a DOM document of all users of a site
     *
     * @param int the site id
     *
     * @return JahiaDOMObject a DOM representation of this object
     *
     * @author NK
     */
    public abstract JahiaDOMObject getUsersAsDOM( int siteID )
    throws JahiaException;


    //--------------------------------------------------------------------------
    /**
     * return a DOM document of all user props of a site
     *
     * @param int the site id
     *
     * @return JahiaDOMObject a DOM representation of this object
     *
     * @author NK
     */
    public abstract JahiaDOMObject getUserPropsAsDOM( int siteID )
    throws JahiaException;

    //--------------------------------------------------------------------------
    /**
     * return a DOM document of all user group access for a site
     *
     * @param int the site id
     *
     * @return JahiaDOMObject a DOM representation of this object
     *
     * @author NK
     */
    public abstract JahiaDOMObject getUserGroupAccessAsDOM( int siteID )
    throws JahiaException;


}