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Automated build for v0.01

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Fmstrat
2019-03-22 10:17:29 -04:00
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plugins/auth_ldap/init.php Normal file
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<?php
/**
* Tiny Tiny RSS plugin for LDAP authentication
* @author tsmgeek (tsmgeek@gmail.com)
* @author hydrian (ben.tyger@tygerclan.net)
* @copyright GPL2
* Requires php-ldap
* @version 2.00
*/
/**
* Configuration
* Put the following options in config.php and customize them for your environment
*
* define('LDAP_AUTH_SERVER_URI', 'ldaps://LDAPServerHostname:port/');
* define('LDAP_AUTH_USETLS', FALSE); // Enable TLS Support for ldaps://
* define('LDAP_AUTH_ALLOW_UNTRUSTED_CERT', TRUE); // Allows untrusted certificate
* define('LDAP_AUTH_BASEDN', 'dc=example,dc=com');
* define('LDAP_AUTH_ANONYMOUSBEFOREBIND', FALSE);
* // ??? will be replaced with the entered username(escaped) at login
* define('LDAP_AUTH_SEARCHFILTER', '(&(objectClass=person)(uid=???))');
* // Optional configuration
* define('LDAP_AUTH_BINDDN', 'cn=serviceaccount,dc=example,dc=com');
* define('LDAP_AUTH_BINDPW', 'ServiceAccountsPassword');
* define('LDAP_AUTH_LOGIN_ATTRIB', 'uid');
* define('LDAP_AUTH_LOG_ATTEMPTS', FALSE);
* Enable Debug Logging
* define('LDAP_AUTH_DEBUG', FALSE);
*
*
*
*/
/**
* Notes -
* LDAP search does not support follow ldap referals. Referals are disabled to
* allow proper login. This is particular to Active Directory.
*
* Also group membership can be supported if the user object contains the
* the group membership via attributes. The following LDAP servers can
* support this.
* * Active Directory
* * OpenLDAP support with MemberOf Overlay
*
*/
class Auth_Ldap extends Plugin implements IAuthModule {
private $link;
private $host;
private $base;
private $logClass;
private $ldapObj = NULL;
private $_debugMode;
private $_serviceBindDN;
private $_serviceBindPass;
private $_baseDN;
private $_useTLS;
private $_host;
private $_port;
private $_scheme;
private $_schemaCacheEnabled;
private $_anonBeforeBind;
private $_allowUntrustedCerts;
private $_ldapLoginAttrib;
function about() {
return array(0.05,
"Authenticates against an LDAP server (configured in config.php)",
"hydrian",
true);
}
function init($host) {
$this->link = $host->get_link();
$this->host = $host;
$this->base = new Auth_Base($this->link);
$host->add_hook($host::HOOK_AUTH_USER, $this);
}
private function _log($msg, $level = E_USER_NOTICE, $file = '', $line = 0, $context = '') {
$loggerFunction = Logger::get();
if (is_object($loggerFunction)) {
$loggerFunction->log_error($level, $msg, $file, $line, $context);
} else {
trigger_error($msg, $level);
}
}
/**
* Logs login attempts
* @param string $username Given username that attempts to log in to TTRSS
* @param string $result "Logging message for type of result. (Success / Fail)"
* @return boolean
* @deprecated
*
* Now that _log support syslog and log levels and graceful fallback user.
*/
private function _logAttempt($username, $result) {
return trigger_error('TT-RSS Login Attempt: user ' . (string) $username .
' attempted to login (' . (string) $result . ') from ' . (string) $ip, E_USER_NOTICE
);
}
/**
* @param string $subject The subject string
* @param string $ignore Set of characters to leave untouched
* @param int $flags Any combination of LDAP_ESCAPE_* flags to indicate the
* set(s) of characters to escape.
* @return string
**/
function ldap_escape($subject, $ignore = '', $flags = 0)
{
if (!function_exists('ldap_escape')) {
define('LDAP_ESCAPE_FILTER', 0x01);
define('LDAP_ESCAPE_DN', 0x02);
static $charMaps = array(
LDAP_ESCAPE_FILTER => array('\\', '*', '(', ')', "\x00"),
LDAP_ESCAPE_DN => array('\\', ',', '=', '+', '<', '>', ';', '"', '#'),
);
// Pre-process the char maps on first call
if (!isset($charMaps[0])) {
$charMaps[0] = array();
for ($i = 0; $i < 256; $i++) {
$charMaps[0][chr($i)] = sprintf('\\%02x', $i);;
}
for ($i = 0, $l = count($charMaps[LDAP_ESCAPE_FILTER]); $i < $l; $i++) {
$chr = $charMaps[LDAP_ESCAPE_FILTER][$i];
unset($charMaps[LDAP_ESCAPE_FILTER][$i]);
$charMaps[LDAP_ESCAPE_FILTER][$chr] = $charMaps[0][$chr];
}
for ($i = 0, $l = count($charMaps[LDAP_ESCAPE_DN]); $i < $l; $i++) {
$chr = $charMaps[LDAP_ESCAPE_DN][$i];
unset($charMaps[LDAP_ESCAPE_DN][$i]);
$charMaps[LDAP_ESCAPE_DN][$chr] = $charMaps[0][$chr];
}
}
// Create the base char map to escape
$flags = (int)$flags;
$charMap = array();
if ($flags & LDAP_ESCAPE_FILTER) {
$charMap += $charMaps[LDAP_ESCAPE_FILTER];
}
if ($flags & LDAP_ESCAPE_DN) {
$charMap += $charMaps[LDAP_ESCAPE_DN];
}
if (!$charMap) {
$charMap = $charMaps[0];
}
// Remove any chars to ignore from the list
$ignore = (string)$ignore;
for ($i = 0, $l = strlen($ignore); $i < $l; $i++) {
unset($charMap[$ignore[$i]]);
}
// Do the main replacement
$result = strtr($subject, $charMap);
// Encode leading/trailing spaces if LDAP_ESCAPE_DN is passed
if ($flags & LDAP_ESCAPE_DN) {
if ($result[0] === ' ') {
$result = '\\20' . substr($result, 1);
}
if ($result[strlen($result) - 1] === ' ') {
$result = substr($result, 0, -1) . '\\20';
}
}
return $result;
}else{
return ldap_escape($subject, $ignore, $flags);
}
}
/**
* Finds client's IP address
* @return string
*/
private function _getClientIP() {
if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
//check ip from share internet
$ip = $_SERVER['HTTP_CLIENT_IP'];
} elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
//to check ip is pass from proxy
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
} else {
$ip = $_SERVER['REMOTE_ADDR'];
}
return $ip;
}
private function _getBindDNWord() {
return (strlen($this->_serviceBindDN) > 0 ) ? $this->_serviceBindDN : 'anonymous DN';
}
private function _getTempDir() {
if (!sys_get_temp_dir()) {
$tmpFile = tempnam();
$tmpDir = dirname($tmpFile);
unlink($tmpFile);
unset($tmpFile);
return $tmpDir;
} else {
return sys_get_temp_dir();
}
}
/**
* Main Authentication method
* Required for plugin interface
* @param unknown $login User's username
* @param unknown $password User's password
* @return boolean
*/
function authenticate($login, $password) {
if ($login && $password) {
if (!function_exists('ldap_connect')) {
trigger_error('auth_ldap requires PHP\'s PECL LDAP package installed.');
return FALSE;
}
//Loading configuration
$this->_debugMode = defined('LDAP_AUTH_DEBUG') ?
LDAP_AUTH_DEBUG : FALSE;
$this->_anonBeforeBind = defined('LDAP_AUTH_ANONYMOUSBEFOREBIND') ?
LDAP_AUTH_ANONYMOUSBEFOREBIND : FALSE;
$this->_serviceBindDN = defined('LDAP_AUTH_BINDDN') ? LDAP_AUTH_BINDDN : null;
$this->_serviceBindPass = defined('LDAP_AUTH_BINDPW') ? LDAP_AUTH_BINDPW : null;
$this->_baseDN = defined('LDAP_AUTH_BASEDN') ? LDAP_AUTH_BASEDN : null;
if (!defined('LDAP_AUTH_BASEDN')) {
$this->_log('LDAP_AUTH_BASEDN is required and not defined.', E_USER_ERROR);
return FALSE;
} else {
$this->_baseDN = LDAP_AUTH_BASEDN;
}
$parsedURI = parse_url(LDAP_AUTH_SERVER_URI);
if ($parsedURI === FALSE) {
$this->_log('Could not parse LDAP_AUTH_SERVER_URI in config.php', E_USER_ERROR);
return FALSE;
}
$this->_host = $parsedURI['host'];
$this->_scheme = $parsedURI['scheme'];
if (is_int($parsedURI['port'])) {
$this->_port = $parsedURI['port'];
} else {
$this->_port = ($this->_scheme === 'ldaps') ? 636 : 389;
}
$this->_useTLS = defined('LDAP_AUTH_USETLS') ? LDAP_AUTH_USETLS : FALSE;
$this->_logAttempts = defined('LDAP_AUTH_LOG_ATTEMPTS') ?
LDAP_AUTH_LOG_ATTEMPTS : FALSE;
$this->_ldapLoginAttrib = defined('LDAP_AUTH_LOGIN_ATTRIB') ?
LDAP_AUTH_LOGIN_ATTRIB : null;
/**
Building LDAP connection
* */
$ldapConnParams = array(
'host' => $this->_host,
'basedn' => $this->_baseDN,
'port' => $this->_port,
'starttls' => $this->_useTLS
);
if ($this->_debugMode)
$this->_log(print_r($ldapConnParams, TRUE), E_USER_NOTICE);
$ldapConn = @ldap_connect($this->_host, $this->_port);
if ($ldapConn === FALSE) {
$this->_log('Could not connect to LDAP Server: \'' . $this->_host . '\'', E_USER_ERROR);
return false;
}
/* Enable LDAP protocol version 3. */
if (!@ldap_set_option($ldapConn, LDAP_OPT_PROTOCOL_VERSION, 3)) {
$this->_log('Failed to set LDAP Protocol version (LDAP_OPT_PROTOCOL_VERSION) to 3', E_USER_ERROR);
return false;
}
/* Set referral option */
if (!@ldap_set_option($ldapConn, LDAP_OPT_REFERRALS, FALSE)) {
$this->_log('Failed to set LDAP Referrals (LDAP_OPT_REFERRALS) to TRUE', E_USER_ERROR);
return false;
}
if (stripos($this->_host, "ldaps:") === FALSE and $this->_useTLS) {
if (!@ldap_start_tls($ldapConn)) {
$this->_log('Unable to force TLS', E_USER_ERROR);
return false;
}
}
$error = @ldap_bind($ldapConn, $this->_serviceBindDN, $this->_serviceBindPass);
if ($error === FALSE) {
$this->_log(
'LDAP bind(): Bind failed (' . $error . ')with DN ' . $this->_serviceBindDN, E_USER_ERROR
);
return FALSE;
} else {
$this->_log(
'Connected to LDAP Server: ' . LDAP_AUTH_SERVER_URI . ' with ' . $this->_getBindDNWord());
}
// Bind with service account if orignal connexion was anonymous
/* if (($this->_anonBeforeBind) && (strlen($this->_bindDN > 0))) {
$binding=$this->ldapObj->bind($this->_serviceBindDN, $this->_serviceBindPass);
if (get_class($binding) !== 'Net_LDAP2') {
$this->_log(
'Cound not bind service account: '.$binding->getMessage(),E_USER_ERROR);
return FALSE;
} else {
$this->_log('Bind with '.$this->_serviceBindDN.' successful.',E_USER_NOTICE);
}
} */
//Searching for user
$filterObj = str_replace('???', $this->ldap_escape($login), LDAP_AUTH_SEARCHFILTER);
$searchResults = @ldap_search($ldapConn, $this->_baseDN, $filterObj, array('displayName', 'title', 'sAMAccountName', $this->_ldapLoginAttrib), 0, 0, 0);
if ($searchResults === FALSE) {
$this->_log('LDAP Search Failed on base \'' . $this->_baseDN . '\' for \'' . $filterObj . '\'', E_USER_ERROR);
return FALSE;
}
$count = @ldap_count_entries($ldapConn, $searchResults);
if ($count === FALSE) {
} elseif ($count > 1) {
$this->_log('Multiple DNs found for username ' . (string) $login, E_USER_WARNING);
return FALSE;
} elseif ($count === 0) {
$this->_log((string) $login, 'Unknown User', E_USER_NOTICE);
return FALSE;
}
//Getting user's DN from search
$userEntry = @ldap_first_entry($ldapConn, $searchResults);
if ($userEntry === FALSE) {
$this->_log('LDAP search(): Unable to retrieve result after searching base \'' . $this->_baseDN . '\' for \'' . $filterObj . '\'', E_USER_WARNING);
return false;
}
$userAttributes = @ldap_get_attributes($ldapConn, $userEntry);
$userDN = @ldap_get_dn($ldapConn, $userEntry);
if ($userDN == FALSE) {
$this->_log('LDAP search(): Unable to get DN after searching base \'' . $this->_baseDN . '\' for \'' . $filterObj . '\'', E_USER_WARNING);
return false;
}
//Binding with user's DN.
if ($this->_debugMode)
$this->_log('Try to bind with user\'s DN: ' . $userDN);
$loginAttempt = @ldap_bind($ldapConn, $userDN, $password);
if ($loginAttempt === TRUE) {
$this->_log('User: ' . (string) $login . ' authentication successful');
if (strlen($this->_ldapLoginAttrib) > 0) {
if ($this->_debugMode)
$this->_log('Looking up TT-RSS username attribute in ' . $this->_ldapLoginAttrib);
$ttrssUsername = $userAttributes[$this->_ldapLoginAttrib][0];
;
@ldap_close($ldapConn);
if (!is_string($ttrssUsername)) {
$this->_log('Could not find user name attribute ' . $this->_ldapLoginAttrib . ' in LDAP entry', E_USER_WARNING);
return FALSE;
}
return $this->base->auto_create_user($ttrssUsername);
} else {
@ldap_close($ldapConn);
return $this->base->auto_create_user($login);
}
} else {
@ldap_close($ldapConn);
$this->_log('User: ' . (string) $login . ' authentication failed');
return FALSE;
}
}
return false;
}
/**
* Returns plugin API version
* Required for plugin interface
* @return number
*/
function api_version() {
return 2;
}
}
?>