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C:/xampp/php5/PEAR/adodb/pear/Auth/Container/_[ Writable ]

File:C:/xampp/php5/PEAR/adodb/pear/Auth/Container/ADOdb.php

<?php
/* 
V5.11 5 May 2010   (c) 2000-2010 John Lim (jlim#natsoft.com). All rights reserved.
  Released under both BSD license and Lesser GPL library license. 
  Whenever there is any discrepancy between the two licenses, 
  the BSD license will take precedence. See License.txt. 
  Set tabs to 4 for best viewing.
  
  Latest version is available at http://adodb.sourceforge.net
  
	Original Authors: Martin Jansen <mj#php.net>
	Richard Tango-Lowy <richtl#arscognita.com>                          
*/

require_once 'Auth/Container.php';
require_once 'adodb.inc.php';
require_once 'adodb-pear.inc.php';
require_once 'adodb-errorpear.inc.php';

/**
 * Storage driver for fetching login data from a database using ADOdb-PHP.
 *
 * This storage driver can use all databases which are supported
 * by the ADBdb DB abstraction layer to fetch login data.
 * See http://php.weblogs.com/adodb for information on ADOdb.
 * NOTE: The ADOdb directory MUST be in your PHP include_path!
 *
 * @author   Richard Tango-Lowy <richtl@arscognita.com>
 * @package  Auth
 * @version  $Revision: 1.3 $
 */
class Auth_Container_ADOdb extends Auth_Container
{

    /**
     * Additional options for the storage container
     * @var array
     */
    var $options = array();

    /**
     * DB object
     * @var object
     */
    var $db = null;
    var $dsn = '';
	
    /**
     * User that is currently selected from the DB.
     * @var string
     */
    var $activeUser = '';

    // {{{ Constructor

    /**
     * Constructor of the container class
     *
     * Initate connection to the database via PEAR::ADOdb
     *
     * @param  string Connection data or DB object
     * @return object Returns an error object if something went wrong
     */
    function Auth_Container_ADOdb($dsn)
    {
        $this->_setDefaults();
		
        if (is_array($dsn)) {
            $this->_parseOptions($dsn);

            if (empty($this->options['dsn'])) {
                PEAR::raiseError('No connection parameters specified!');
            }
        } else {
        	// Extract db_type from dsn string.
            $this->options['dsn'] = $dsn;
        }
    }

    // }}}
    // {{{ _connect()

    /**
     * Connect to database by using the given DSN string
     *
     * @access private
     * @param  string DSN string
     * @return mixed  Object on error, otherwise bool
     */
     function _connect($dsn)
    {
        if (is_string($dsn) || is_array($dsn)) {
        	if(!$this->db) {
	        	$this->db = ADONewConnection($dsn);
	    		if( $err = ADODB_Pear_error() ) {
	   	    		return PEAR::raiseError($err);
	    		}
        	}
        	
        } else {
            return PEAR::raiseError('The given dsn was not valid in file ' . __FILE__ . ' at line ' . __LINE__,
                                    41,
                                    PEAR_ERROR_RETURN,
                                    null,
                                    null
                                    );
        }
        
        if(!$this->db) {
        	return PEAR::raiseError(ADODB_Pear_error());
        } else {
        	return true;
        }
    }

    // }}}
    // {{{ _prepare()

    /**
     * Prepare database connection
     *
     * This function checks if we have already opened a connection to
     * the database. If that's not the case, a new connection is opened.
     *
     * @access private
     * @return mixed True or a DB error object.
     */
    function _prepare()
    {
    	if(!$this->db) {
    		$res = $this->_connect($this->options['dsn']);  		
    	}
        return true;
    }

    // }}}
    // {{{ query()

    /**
     * Prepare query to the database
     *
     * This function checks if we have already opened a connection to
     * the database. If that's not the case, a new connection is opened.
     * After that the query is passed to the database.
     *
     * @access public
     * @param  string Query string
     * @return mixed  a DB_result object or DB_OK on success, a DB
     *                or PEAR error on failure
     */
    function query($query)
    {
        $err = $this->_prepare();
        if ($err !== true) {
            return $err;
        }
        return $this->db->query($query);
    }

    // }}}
    // {{{ _setDefaults()

    /**
     * Set some default options
     *
     * @access private
     * @return void
     */
    function _setDefaults()
    {
    	$this->options['db_type']	= 'mysql';
        $this->options['table']       = 'auth';
        $this->options['usernamecol'] = 'username';
        $this->options['passwordcol'] = 'password';
        $this->options['dsn']         = '';
        $this->options['db_fields']   = '';
        $this->options['cryptType']   = 'md5';
    }

    // }}}
    // {{{ _parseOptions()

    /**
     * Parse options passed to the container class
     *
     * @access private
     * @param  array
     */
    function _parseOptions($array)
    {
        foreach ($array as $key => $value) {
            if (isset($this->options[$key])) {
                $this->options[$key] = $value;
            }
        }

        /* Include additional fields if they exist */
        if(!empty($this->options['db_fields'])){
            if(is_array($this->options['db_fields'])){
                $this->options['db_fields'] = join($this->options['db_fields'], ', ');
            }
            $this->options['db_fields'] = ', '.$this->options['db_fields'];
        }
    }

    // }}}
    // {{{ fetchData()

    /**
     * Get user information from database
     *
     * This function uses the given username to fetch
     * the corresponding login data from the database
     * table. If an account that matches the passed username
     * and password is found, the function returns true.
     * Otherwise it returns false.
     *
     * @param   string Username
     * @param   string Password
     * @return  mixed  Error object or boolean
     */
    function fetchData($username, $password)
    {
        // Prepare for a database query
        $err = $this->_prepare();
        if ($err !== true) {
            return PEAR::raiseError($err->getMessage(), $err->getCode());
        }

        // Find if db_fields contains a *, i so assume all col are selected
        if(strstr($this->options['db_fields'], '*')){
            $sql_from = "*";
        }
        else{
            $sql_from = $this->options['usernamecol'] . ", ".$this->options['passwordcol'].$this->options['db_fields'];
        }
        
        $query = "SELECT ".$sql_from.
                " FROM ".$this->options['table'].
                " WHERE ".$this->options['usernamecol']." = " . $this->db->Quote($username);
        
        $ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
        $rset = $this->db->Execute( $query );
        $res = $rset->fetchRow();

        if (DB::isError($res)) {
            return PEAR::raiseError($res->getMessage(), $res->getCode());
        }
        if (!is_array($res)) {
            $this->activeUser = '';
            return false;
        }
        if ($this->verifyPassword(trim($password, "\r\n"),
                                  trim($res[$this->options['passwordcol']], "\r\n"),
                                  $this->options['cryptType'])) {
            // Store additional field values in the session
            foreach ($res as $key => $value) {
                if ($key == $this->options['passwordcol'] ||
                    $key == $this->options['usernamecol']) {
                    continue;
                }
                // Use reference to the auth object if exists
                // This is because the auth session variable can change so a static call to setAuthData does not make sence
                if(is_object($this->_auth_obj)){
                    $this->_auth_obj->setAuthData($key, $value);
                } else {
                    Auth::setAuthData($key, $value);
                }
            }

            return true;
        }

        $this->activeUser = $res[$this->options['usernamecol']];
        return false;
    }

    // }}}
    // {{{ listUsers()

    function listUsers()
    {
        $err = $this->_prepare();
        if ($err !== true) {
            return PEAR::raiseError($err->getMessage(), $err->getCode());
        }

        $retVal = array();

        // Find if db_fileds contains a *, i so assume all col are selected
        if(strstr($this->options['db_fields'], '*')){
            $sql_from = "*";
        }
        else{
            $sql_from = $this->options['usernamecol'] . ", ".$this->options['passwordcol'].$this->options['db_fields'];
        }

        $query = sprintf("SELECT %s FROM %s",
                         $sql_from,
                         $this->options['table']
                         );
        $res = $this->db->getAll($query, null, DB_FETCHMODE_ASSOC);

        if (DB::isError($res)) {
            return PEAR::raiseError($res->getMessage(), $res->getCode());
        } else {
            foreach ($res as $user) {
                $user['username'] = $user[$this->options['usernamecol']];
                $retVal[] = $user;
            }
        }
        return $retVal;
    }

    // }}}
    // {{{ addUser()

    /**
     * Add user to the storage container
     *
     * @access public
     * @param  string Username
     * @param  string Password
     * @param  mixed  Additional information that are stored in the DB
     *
     * @return mixed True on success, otherwise error object
     */
    function addUser($username, $password, $additional = "")
    {
        if (function_exists($this->options['cryptType'])) {
            $cryptFunction = $this->options['cryptType'];
        } else {
            $cryptFunction = 'md5';
        }

        $additional_key   = '';
        $additional_value = '';

        if (is_array($additional)) {
            foreach ($additional as $key => $value) {
                $additional_key .= ', ' . $key;
                $additional_value .= ", '" . $value . "'";
            }
        }

        $query = sprintf("INSERT INTO %s (%s, %s%s) VALUES ('%s', '%s'%s)",
                         $this->options['table'],
                         $this->options['usernamecol'],
                         $this->options['passwordcol'],
                         $additional_key,
                         $username,
                         $cryptFunction($password),
                         $additional_value
                         );

        $res = $this->query($query);

        if (DB::isError($res)) {
           return PEAR::raiseError($res->getMessage(), $res->getCode());
        } else {
          return true;
        }
    }

    // }}}
    // {{{ removeUser()

    /**
     * Remove user from the storage container
     *
     * @access public
     * @param  string Username
     *
     * @return mixed True on success, otherwise error object
     */
    function removeUser($username)
    {
        $query = sprintf("DELETE FROM %s WHERE %s = '%s'",
                         $this->options['table'],
                         $this->options['usernamecol'],
                         $username
                         );

        $res = $this->query($query);

        if (DB::isError($res)) {
           return PEAR::raiseError($res->getMessage(), $res->getCode());
        } else {
          return true;
        }
    }

    // }}}
}

function showDbg( $string ) {
	print "
-- $string</P>";
}
function dump( $var, $str, $vardump = false ) {
	print "<H4>$str</H4><pre>";
	( !$vardump ) ? ( print_r( $var )) : ( var_dump( $var ));
	print "</pre>";
}
?>

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