<?php
define('_BASE_DN', 'ou=People,dc=sucs,dc=org');
define('_LDAP_SERVER', 'ldap://silver');

class Members {

private $conn; //LDAP connection

function __construct() 
{
	// Connect and bind to ldap server
	$this->conn = ldap_connect(_LDAP_SERVER);
	ldap_set_option($this->conn, LDAP_OPT_PROTOCOL_VERSION, 3);
	$bind = ldap_bind($this->conn);
}

function getMemberList() 
{
        // Search for certain members and retrieve their username and
        $search = ldap_search($this->conn, _BASE_DN, 'uid=*');
        // Sort By Username
        ldap_sort($this->conn, $search, 'uid');

	return $this->extractMember($search);
}


function memberView($value) 
{
	$search = ldap_search($this->conn, _BASE_DN, '(uid=' . $this->makeSafeUsername($value) . ')');
	return $this->extractMember($search);

}

function memberSearch($value) 
{
	$search = ldap_search($this->conn, _BASE_DN, '(|(uid=*' . $this->makeSafeUsername($value) . '*)(cn=*' . $this->makeSafeRealName($value) . '*))');
	return $this->extractMember($search);
}


private function extractMember($search)
{
        // Produce an array of usernames
        $usernames = array();
        $entryHandler = ldap_first_entry($this->conn, $search);
        while($entryHandler) {
                $username = ldap_get_values($this->conn, $entryHandler, 'uid');
                $realname = ldap_get_values($this->conn, $entryHandler, 'cn');
                $homedir = ldap_get_values($this->conn, $entryHandler, 'homedirectory');
		$usernames[] = array( "uid" => $username[0], "cn" => $realname[0], "homedir" => $homedir[0], "website" => false);
                $entryHandler = ldap_next_entry($this->conn, $entryHandler);
	}
	return $usernames;
}


// Compares two keyed arrays ( array("uid" => ?, "cn" =>) etc)
// by the last word of the "cn" field, which would seem
// to represent the surname
private function cmpSurnames($person1, $person2)
{
        $names1 = explode(' ', $person1['cn']);
        $names2 = explode(' ', $person2['cn']);
        return strcmp(array_pop($names1), array_pop($names2));
}

// Compares two keyed arrays ( array("uid" => ?, "cn" =>) etc)
// by the first word (and onward) of the "cn" field, which would seem
// to represent the name
private function cmpForenames($person1, $person2)
{
        return strcmp($person1['cn'], $person2['cn']);
}

// Converts a given string to something that can
// safely be used as a username to search for (although
// this doesn't necessarily mean it's a valid username).
private function makeSafeUserName($username)
{
        $username = trim(strtolower($username));
        return preg_replace('[^a-z0-9_]', '', $username);
}

// Converts a given string to something that can
// safely be used as a real name to search for
private function makeSafeRealName($username)
{
        $username = trim(strtolower($username));
        return preg_replace('[^a-z0-9_ ]', '', $username);
}


}
?>