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275 lines
8.3 KiB
PHP
Executable File
275 lines
8.3 KiB
PHP
Executable File
<?php
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/*
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+ ----------------------------------------------------------------------------+
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| e107 website system
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| Steve Dunstan 2001-2002
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| http://e107.org
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| jalist@e107.org
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| Released under the terms and conditions of the
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| GNU General Public License (http://gnu.org).
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| $Source: /cvs_backup/e107_0.8/e107_plugins/alt_auth/ldap_auth.php,v $
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| $Revision: 1.6 $
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| $Date: 2008-12-23 20:31:30 $
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| $Author: e107steved $
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+----------------------------------------------------------------------------+
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*/
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class auth_login
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{
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var $server;
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var $dn;
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var $ou;
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var $usr;
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var $pwd;
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var $serverType;
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var $ldapErrorCode;
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var $ldapErrorText;
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var $ErrorText;
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var $connection;
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var $result;
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var $ldapVersion;
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var $Available;
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var $filter;
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var $copyAttribs; // Any attributes which are to be copied on successful login
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var $copyMethods;
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function auth_login()
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{
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$this->copyAttribs = array();
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$this->copyMethods = array();
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$sql = new db;
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$sql->db_Select("alt_auth", "*", "auth_type = 'ldap' ");
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while ($row = $sql->db_Fetch())
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{
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$ldap[$row['auth_parmname']] = base64_decode(base64_decode($row['auth_parmval']));
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if ((strpos($row['auth_parmname'], 'ldap_xf_') === 0) && $ldap[$row['auth_parmname']]) // Attribute to copy on successful login
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{
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$this->copyAttribs[substr($row['auth_parmname'], strlen('ldap_xf_'))] = $ldap[$row['auth_parmname']]; // Key = LDAP attribute. Value = e107 field name
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}
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elseif ((strpos($row['auth_parmname'], 'ldap_pm_') === 0) && $ldap[$row['auth_parmname']] && ($ldap[$row['auth_parmname']] != 'none')) // Method to use to copy parameter
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{ // Any fields with non-null 'copy' methods
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$this->copyMethods[substr($row['auth_parmname'], strlen('ldap_pm_'))] = $ldap[$row['auth_parmname']]; // Key = e107 field name. Value = copy method
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}
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unset($row['auth_parmname']);
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}
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$this->server = explode(",", $ldap['ldap_server']);
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$this->serverType = $ldap['ldap_servertype'];
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$this->dn = $ldap['ldap_basedn'];
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$this->ou = $ldap['ldap_ou'];
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$this->usr = $ldap['ldap_user'];
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$this->pwd = $ldap['ldap_passwd'];
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$this->ldapVersion = $ldap['ldap_version'];
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$this->filter = (isset($ldap['ldap_edirfilter']) ? $ldap['ldap_edirfilter'] : "");
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if (!function_exists('ldap_connect'))
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{
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$this->Available = false;
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return false;
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}
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if (!$this->connect())
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{
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return AUTH_NOCONNECT;
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}
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}
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function makeErrorText($extra = '')
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{
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$this->ldapErrorCode = ldap_errno($this->connection);
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$this->ldapErrorText = ldap_error($this->connection);
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$this->ErrorText = $extra . ' ' . $this->ldapErrorCode . ': ' . $this->ldapErrorText;
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}
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function connect()
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{
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foreach ($this->server as $key => $host)
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{
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$this->connection = ldap_connect($host);
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if ($this->connection)
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{
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if ($this->ldapVersion == 3 || $this->serverType == "ActiveDirectory")
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{
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@ldap_set_option($this->connection, LDAP_OPT_PROTOCOL_VERSION, 3);
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}
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return true;
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}
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}
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$this->ldapErrorCode = -1;
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$this->ldapErrorText = "Unable to connect to any server";
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$this->ErrorText = $this->ldapErrorCode . ': ' . $this->ldapErrorText;
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return false;
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}
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function close()
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{
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if (!@ldap_close($this->connection))
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{
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$this->makeErrorText(); // Read the error code and explanatory string
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return false;
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}
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else
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{
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return true;
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}
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}
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function login($uname, $pass, &$newvals, $connect_only = false)
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{
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/* Construct the full DN, eg:-
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** "uid=username, ou=People, dc=orgname,dc=com"
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*/
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// echo "Login to server type: {$this->serverType}<br />";
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$current_filter = "";
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if ($this->serverType == "ActiveDirectory")
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{
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$checkDn = $uname . '@' . $this->dn;
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// added by Father Barry Keal
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// $current_filter = "(sAMAccountName={$uname})"; for pre windows 2000
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$current_filter = "(userprincipalname={$uname}@{$this->dn})"; // for 2000 +
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// end add by Father Barry Keal
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}
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else
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{
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if ($this->usr != '' && $this->pwd != '')
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{
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$this->result = ldap_bind($this->connection, $this->usr, $this->pwd);
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}
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else
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{
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$this->result = ldap_bind($this->connection);
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}
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if ($this->result === false)
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{
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// echo "LDAP bind failed<br />";
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$this->makeErrorText(); // Read the error code and explanatory string
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return AUTH_NOCONNECT;
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}
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// In ldap_auth.php, should look like this instead for eDirectory
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// $query = ldap_search($this -> connection, $this -> dn, "cn=".$uname);
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if ($this->serverType == "eDirectory")
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{
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$current_filter = "(&(cn={$uname})" . $this->filter . ")";
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}
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else
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{
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$current_filter = "uid=" . $uname;
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}
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// echo "LDAP search: {$this->dn}, {$current_filter}<br />";
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$query = ldap_search($this->connection, $this->dn, $current_filter);
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if ($query === false)
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{
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// Could not perform query to LDAP directory
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echo "LDAP - search for user failed<br />";
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$this->makeErrorText(); // Read the error code and explanatory string
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return AUTH_NOCONNECT;
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}
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else
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{
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$query_result = ldap_get_entries($this->connection, $query);
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if ($query_result["count"] != 1)
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{
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if ($connect_only) return AUTH_SUCCESS;
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else return AUTH_NOUSER;
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}
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else
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{
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$checkDn = $query_result[0]["dn"];
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$this->close();
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$this->connect();
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}
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}
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}
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// Try and connect...
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$this->result = ldap_bind($this->connection, $checkDn, $pass);
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if ($this->result)
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{
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// Connected OK - login credentials are fine!
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// But bind can return success even if no password! Does reject an invalid password, however
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if ($connect_only) return AUTH_SUCCESS;
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if (trim($pass) == '') return AUTH_BADPASSWORD; // Pick up a blank password
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if (count($this->copyAttribs) == 0) return AUTH_SUCCESS; // No attributes required - we're done
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$ldap_attributes = array_values(array_unique($this->copyAttribs));
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if ($this->serverType == "ActiveDirectory")
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{ // If we are using AD then build up the full string from the fqdn
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$altauth_tmp = explode('.', $this->dn);
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$checkDn='';
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foreach($altauth_tmp as $$altauth_dc)
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{
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$checkDn .= ",DC={$altauth_dc}";
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}
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// prefix with the OU
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$checkDn = $this->ou . $checkDn;
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}
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$this->result = ldap_search($this->connection, $checkDn, $current_filter, $ldap_attributes);
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if ($this->result)
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{
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$entries = ldap_get_entries($this->connection, $this->result);
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if (count($entries) == 2) // All OK
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{
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for ($j = 0; $j < $entries[0]['count']; $j++)
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{
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$k = $entries[0][$j]; // LDAP attribute name
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$tlv = $entries[0][$k]; // Array of LDAP data
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if (is_array($tlv) && count($tempKeys = array_keys($this->copyAttribs,$k))) // This bit executed if we've successfully got some data. Key is the attribute name, then array of data
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{
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foreach ($tempKeys as $tk) // Single LDAP attribute may be mapped to several fields
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{
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// $newvals[$tk] = $this->translate($tlv[0]); // Just grab the first value
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$newvals[$tk] = $tlv[0]; // Just grab the first value
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}
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}
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else
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{
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// echo " Unexpected non-array value - Key: {$k} Value: {$tlv}<br />";
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$this->makeErrorText(); // Read the error code and explanatory string
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return AUTH_NOCONNECT; // Not really a suitable return code for this - its an error
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}
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}
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}
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else
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{
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// echo "Got wrong number of entries<br />";
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$this->makeErrorText(); // Read the error code and explanatory string
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return AUTH_NOUSER; // Bit debateable what to return if this happens
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}
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}
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else // Probably a bit strange if we don't get any info back - but possible
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{
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// echo "No results!<br />";
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}
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return AUTH_SUCCESS;
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}
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else
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{
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/* Login failed. Return false, together with the error code and text from
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** the LDAP server. The common error codes and reasons are listed below :
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** (for iPlanet, other servers may differ)
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** 19 - Account locked out (too many invalid login attempts)
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** 32 - User does not exist
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** 49 - Wrong password
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** 53 - Account inactive (manually locked out by administrator)
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*/
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$this->makeErrorText(); // Read the error code and explanatory string
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switch ($this->ldapErrorCode)
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{
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case 32 :
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return AUTH_NOUSER;
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case 49 :
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return AUTH_BADPASSWORD;
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}
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// return error code as if it never connected, maybe change that in the future
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return AUTH_NOCONNECT;
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}
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}
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}
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?>
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