Verzeichnisstruktur phpBB-3.0.0
- Veröffentlicht
- 12.12.2007
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auth_ldap.php
001 <?php
002 /**
003 *
004 * LDAP auth plug-in for phpBB3
005 *
006 * Authentication plug-ins is largely down to Sergey Kanareykin, our thanks to him.
007 *
008 * @package login
009 * @version $Id$
010 * @copyright (c) 2005 phpBB Group
011 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
012 *
013 */
014
015 /**
016 * @ignore
017 */
018 if (!defined('IN_PHPBB'))
019 {
020 exit;
021 }
022
023 /**
024 * Connect to ldap server
025 * Only allow changing authentication to ldap if we can connect to the ldap server
026 * Called in acp_board while setting authentication plugins
027 */
028 function init_ldap()
029 {
030 global $config, $user;
031
032 if (!@extension_loaded('ldap'))
033 {
034 return $user->lang['LDAP_NO_LDAP_EXTENSION'];
035 }
036
037 $config['ldap_port'] = (int) $config['ldap_port'];
038 if ($config['ldap_port'])
039 {
040 $ldap = @ldap_connect($config['ldap_server'], $config['ldap_port']);
041 }
042 else
043 {
044 $ldap = @ldap_connect($config['ldap_server']);
045 }
046
047 if (!$ldap)
048 {
049 return $user->lang['LDAP_NO_SERVER_CONNECTION'];
050 }
051
052 @ldap_set_option($ldap, LDAP_OPT_PROTOCOL_VERSION, 3);
053 @ldap_set_option($ldap, LDAP_OPT_REFERRALS, 0);
054
055 if ($config['ldap_user'] || $config['ldap_password'])
056 {
057 if (!@ldap_bind($ldap, htmlspecialchars_decode($config['ldap_user']), htmlspecialchars_decode($config['ldap_password'])))
058 {
059 return $user->lang['LDAP_INCORRECT_USER_PASSWORD'];
060 }
061 }
062
063 // ldap_connect only checks whether the specified server is valid, so the connection might still fail
064 $search = @ldap_search(
065 $ldap,
066 $config['ldap_base_dn'],
067 ldap_user_filter($user->data['username']),
068 (empty($config['ldap_email'])) ? array($config['ldap_uid']) : array($config['ldap_uid'], $config['ldap_email']),
069 0,
070 1
071 );
072
073 if ($search === false)
074 {
075 return $user->lang['LDAP_NO_SERVER_CONNECTION'];
076 }
077
078 $result = @ldap_get_entries($ldap, $search);
079
080 @ldap_close($ldap);
081
082
083 if (!is_array($result) || sizeof($result) < 2)
084 {
085 return sprintf($user->lang['LDAP_NO_IDENTITY'], $user->data['username']);
086 }
087
088 if (!empty($config['ldap_email']) && !isset($result[0][$config['ldap_email']]))
089 {
090 return $user->lang['LDAP_NO_EMAIL'];
091 }
092
093 return false;
094 }
095
096 /**
097 * Login function
098 */
099 function login_ldap(&$username, &$password)
100 {
101 global $db, $config, $user;
102
103 // do not allow empty password
104 if (!$password)
105 {
106 return array(
107 'status' => LOGIN_BREAK,
108 'error_msg' => 'NO_PASSWORD_SUPPLIED',
109 );
110 }
111
112 if (!@extension_loaded('ldap'))
113 {
114 return array(
115 'status' => LOGIN_ERROR_EXTERNAL_AUTH,
116 'error_msg' => 'LDAP_NO_LDAP_EXTENSION',
117 'user_row' => array('user_id' => ANONYMOUS),
118 );
119 }
120
121 $config['ldap_port'] = (int) $config['ldap_port'];
122 if ($config['ldap_port'])
123 {
124 $ldap = @ldap_connect($config['ldap_server'], $config['ldap_port']);
125 }
126 else
127 {
128 $ldap = @ldap_connect($config['ldap_server']);
129 }
130
131 if (!$ldap)
132 {
133 return array(
134 'status' => LOGIN_ERROR_EXTERNAL_AUTH,
135 'error_msg' => 'LDAP_NO_SERVER_CONNECTION',
136 'user_row' => array('user_id' => ANONYMOUS),
137 );
138 }
139
140 @ldap_set_option($ldap, LDAP_OPT_PROTOCOL_VERSION, 3);
141 @ldap_set_option($ldap, LDAP_OPT_REFERRALS, 0);
142
143 if ($config['ldap_user'] || $config['ldap_password'])
144 {
145 if (!@ldap_bind($ldap, $config['ldap_user'], htmlspecialchars_decode($config['ldap_password'])))
146 {
147 return $user->lang['LDAP_NO_SERVER_CONNECTION'];
148 }
149 }
150
151 $search = @ldap_search(
152 $ldap,
153 $config['ldap_base_dn'],
154 ldap_user_filter($username),
155 (empty($config['ldap_email'])) ? array($config['ldap_uid']) : array($config['ldap_uid'], $config['ldap_email']),
156 0,
157 1
158 );
159
160 $ldap_result = @ldap_get_entries($ldap, $search);
161
162 if (is_array($ldap_result) && sizeof($ldap_result) > 1)
163 {
164 if (@ldap_bind($ldap, $ldap_result[0]['dn'], htmlspecialchars_decode($password)))
165 {
166 @ldap_close($ldap);
167
168 $sql ='SELECT user_id, username, user_password, user_passchg, user_email, user_type
169 FROM ' . USERS_TABLE . "
170 WHERE username_clean = '" . $db->sql_escape(utf8_clean_string($username)) . "'";
171 $result = $db->sql_query($sql);
172 $row = $db->sql_fetchrow($result);
173 $db->sql_freeresult($result);
174
175 if ($row)
176 {
177 unset($ldap_result);
178
179 // User inactive...
180 if ($row['user_type'] == USER_INACTIVE || $row['user_type'] == USER_IGNORE)
181 {
182 return array(
183 'status' => LOGIN_ERROR_ACTIVE,
184 'error_msg' => 'ACTIVE_ERROR',
185 'user_row' => $row,
186 );
187 }
188
189 // Successful login... set user_login_attempts to zero...
190 return array(
191 'status' => LOGIN_SUCCESS,
192 'error_msg' => false,
193 'user_row' => $row,
194 );
195 }
196 else
197 {
198 // retrieve default group id
199 $sql = 'SELECT group_id
200 FROM ' . GROUPS_TABLE . "
201 WHERE group_name = '" . $db->sql_escape('REGISTERED') . "'
202 AND group_type = " . GROUP_SPECIAL;
203 $result = $db->sql_query($sql);
204 $row = $db->sql_fetchrow($result);
205 $db->sql_freeresult($result);
206
207 if (!$row)
208 {
209 trigger_error('NO_GROUP');
210 }
211
212 // generate user account data
213 $ldap_user_row = array(
214 'username' => $username,
215 'user_password' => phpbb_hash($password),
216 'user_email' => (!empty($config['ldap_email'])) ? $ldap_result[0][$config['ldap_email']][0] : '',
217 'group_id' => (int) $row['group_id'],
218 'user_type' => USER_NORMAL,
219 'user_ip' => $user->ip,
220 );
221
222 unset($ldap_result);
223
224 // this is the user's first login so create an empty profile
225 return array(
226 'status' => LOGIN_SUCCESS_CREATE_PROFILE,
227 'error_msg' => false,
228 'user_row' => $ldap_user_row,
229 );
230 }
231 }
232 else
233 {
234 unset($ldap_result);
235 @ldap_close($ldap);
236
237 // Give status about wrong password...
238 return array(
239 'status' => LOGIN_ERROR_PASSWORD,
240 'error_msg' => 'LOGIN_ERROR_PASSWORD',
241 'user_row' => array('user_id' => ANONYMOUS),
242 );
243 }
244 }
245
246 @ldap_close($ldap);
247
248 return array(
249 'status' => LOGIN_ERROR_USERNAME,
250 'error_msg' => 'LOGIN_ERROR_USERNAME',
251 'user_row' => array('user_id' => ANONYMOUS),
252 );
253 }
254
255 /**
256 * Generates a filter string for ldap_search to find a user
257 *
258 * @param $username string Username identifying the searched user
259 *
260 * @return string A filter string for ldap_search
261 */
262 function ldap_user_filter($username)
263 {
264 global $config;
265
266 $filter = '(' . $config['ldap_uid'] . '=' . ldap_escape(htmlspecialchars_decode($username)) . ')';
267 if ($config['ldap_user_filter'])
268 {
269 $filter = "(&$filter({$config['ldap_user_filter']}))";
270 }
271 return $filter;
272 }
273
274 /**
275 * Escapes an LDAP AttributeValue
276 */
277 function ldap_escape($string)
278 {
279 return str_replace(array('*', '\\', '(', ')'), array('\\*', '\\\\', '\\(', '\\)'), $string);
280 }
281
282 /**
283 * This function is used to output any required fields in the authentication
284 * admin panel. It also defines any required configuration table fields.
285 */
286 function acp_ldap(&$new)
287 {
288 global $user;
289
290 $tpl = '
291
292 <dl>
293 <dt><label for="ldap_server">' . $user->lang['LDAP_SERVER'] . ':</label><br /><span>' . $user->lang['LDAP_SERVER_EXPLAIN'] . '</span></dt>
294 <dd><input type="text" id="ldap_server" size="40" name="config[ldap_server]" value="' . $new['ldap_server'] . '" /></dd>
295 </dl>
296 <dl>
297 <dt><label for="ldap_port">' . $user->lang['LDAP_PORT'] . ':</label><br /><span>' . $user->lang['LDAP_PORT_EXPLAIN'] . '</span></dt>
298 <dd><input type="text" id="ldap_port" size="40" name="config[ldap_port]" value="' . $new['ldap_port'] . '" /></dd>
299 </dl>
300 <dl>
301 <dt><label for="ldap_dn">' . $user->lang['LDAP_DN'] . ':</label><br /><span>' . $user->lang['LDAP_DN_EXPLAIN'] . '</span></dt>
302 <dd><input type="text" id="ldap_dn" size="40" name="config[ldap_base_dn]" value="' . $new['ldap_base_dn'] . '" /></dd>
303 </dl>
304 <dl>
305 <dt><label for="ldap_uid">' . $user->lang['LDAP_UID'] . ':</label><br /><span>' . $user->lang['LDAP_UID_EXPLAIN'] . '</span></dt>
306 <dd><input type="text" id="ldap_uid" size="40" name="config[ldap_uid]" value="' . $new['ldap_uid'] . '" /></dd>
307 </dl>
308 <dl>
309 <dt><label for="ldap_user_filter">' . $user->lang['LDAP_USER_FILTER'] . ':</label><br /><span>' . $user->lang['LDAP_USER_FILTER_EXPLAIN'] . '</span></dt>
310 <dd><input type="text" id="ldap_user_filter" size="40" name="config[ldap_user_filter]" value="' . $new['ldap_user_filter'] . '" /></dd>
311 </dl>
312 <dl>
313 <dt><label for="ldap_email">' . $user->lang['LDAP_EMAIL'] . ':</label><br /><span>' . $user->lang['LDAP_EMAIL_EXPLAIN'] . '</span></dt>
314 <dd><input type="text" id="ldap_email" size="40" name="config[ldap_email]" value="' . $new['ldap_email'] . '" /></dd>
315 </dl>
316 <dl>
317 <dt><label for="ldap_user">' . $user->lang['LDAP_USER'] . ':</label><br /><span>' . $user->lang['LDAP_USER_EXPLAIN'] . '</span></dt>
318 <dd><input type="text" id="ldap_user" size="40" name="config[ldap_user]" value="' . $new['ldap_user'] . '" /></dd>
319 </dl>
320 <dl>
321 <dt><label for="ldap_password">' . $user->lang['LDAP_PASSWORD'] . ':</label><br /><span>' . $user->lang['LDAP_PASSWORD_EXPLAIN'] . '</span></dt>
322 <dd><input type="password" id="ldap_password" size="40" name="config[ldap_password]" value="' . $new['ldap_password'] . '" /></dd>
323 </dl>
324 ';
325
326 // These are fields required in the config table
327 return array(
328 'tpl' => $tpl,
329 'config' => array('ldap_server', 'ldap_port', 'ldap_base_dn', 'ldap_uid', 'ldap_user_filter', 'ldap_email', 'ldap_user', 'ldap_password')
330 );
331 }
332
333 ?>