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<?php
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/**
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 *
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 * @category        backend
5
 * @package         login
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 * @author          WebsiteBaker Project
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 * @copyright       2004-2009, Ryan Djurovich
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 * @copyright       2009-2010, Website Baker Org. e.V.
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 * @link			http://www.websitebaker2.org/
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 * @license         http://www.gnu.org/licenses/gpl.html
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 * @platform        WebsiteBaker 2.8.x
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 * @requirements    PHP 4.3.4 and higher
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 * @version         $Id$
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 * @filesource		$HeadURL$
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 * @lastmodified    $Date$
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 *
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 */
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19
// Stop this file from being accessed directly
20
if(!defined('WB_URL')) {
21
	header('Location: ../index.php');
22
	exit(0);
23
}
24
25
define('LOGIN_CLASS_LOADED', true);
26
27
// Load the other required class files if they are not already loaded
28
require_once(WB_PATH."/framework/class.admin.php");
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// Get WB version
30
require_once(ADMIN_PATH.'/interface/version.php');
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32
class login extends admin {
33
	function login($config_array) {
34
		// Get language vars
35
		global $MESSAGE;
36
		$this->wb();
37
		// Get configuration values
38
		$this->USERS_TABLE = $config_array['USERS_TABLE'];
39
		$this->GROUPS_TABLE = $config_array['GROUPS_TABLE'];
40
		$this->username_fieldname = $config_array['USERNAME_FIELDNAME'];
41
		$this->password_fieldname = $config_array['PASSWORD_FIELDNAME'];
42
		$this->remember_me_option = $config_array['REMEMBER_ME_OPTION'];
43
		$this->max_attemps = $config_array['MAX_ATTEMPS'];
44
		$this->warning_url = $config_array['WARNING_URL'];
45
		$this->login_url = $config_array['LOGIN_URL'];
46
		$this->template_dir = $config_array['TEMPLATE_DIR'];
47
		$this->template_file = $config_array['TEMPLATE_FILE'];
48
		$this->frontend = $config_array['FRONTEND'];
49
		$this->forgotten_details_app = $config_array['FORGOTTEN_DETAILS_APP'];
50
		$this->max_username_len = $config_array['MAX_USERNAME_LEN'];
51
		$this->max_password_len = $config_array['MAX_PASSWORD_LEN'];
52
		if (array_key_exists('REDIRECT_URL',$config_array))
53
			$this->redirect_url = $config_array['REDIRECT_URL'];
54
		else
55
			$this->redirect_url = '';
56
		// Get the supplied username and password
57
		if ($this->get_post('username_fieldname') != ''){
58
			$username_fieldname = $this->get_post('username_fieldname');
59
			$password_fieldname = $this->get_post('password_fieldname');
60
		} else {
61
			$username_fieldname = 'username';
62
			$password_fieldname = 'password';
63
		}
64
		$this->username = $this->add_slashes(strtolower($this->get_post($username_fieldname)));
65
		$this->password = $this->get_post($password_fieldname);
66
		// Figure out if the "remember me" option has been checked
67
		if($this->get_post('remember') == 'true') {
68
			$this->remember = $this->get_post('remember');
69
		} else {
70
			$this->remember = false;
71
		}
72
		// Get the length of the supplied username and password
73
		if($this->get_post($username_fieldname) != '') {
74
			$this->username_len = strlen($this->username);
75
			$this->password_len = strlen($this->password);
76
		}
77
		// If the url is blank, set it to the default url
78
		$this->url = $this->get_post('url');
79
		if ($this->redirect_url!='') {
80
			$this->url = $this->redirect_url;
81
		}
82
		if(strlen($this->url) < 2) {
83
			$this->url = $config_array['DEFAULT_URL'];
84
		}
85
		if($this->is_authenticated() == true) {
86
			// User already logged-in, so redirect to default url
87
			header('Location: '.$this->url);
88
			exit();
89
		} elseif($this->is_remembered() == true) {
90
			// User has been "remembered"
91
			// Get the users password
92
			$database = new database();
93
			$query_details = $database->query("SELECT * FROM ".$this->USERS_TABLE." WHERE user_id = '".$this->get_safe_remember_key()."' LIMIT 1");
94
			$fetch_details = $query_details->fetchRow();
95
			$this->username = $fetch_details['username'];
96
			$this->password = $fetch_details['password'];
97
			// Check if the user exists (authenticate them)
98
			if($this->authenticate()) {
99
				// Authentication successful
100
				header("Location: ".$this->url);
101
				exit(0);
102
			} else {
103
				$this->message = $MESSAGE['LOGIN']['AUTHENTICATION_FAILED'];
104
				$this->increase_attemps();
105
			}
106
		} elseif($this->username == '' AND $this->password == '') {
107
			$this->message = $MESSAGE['LOGIN']['BOTH_BLANK'];
108
			$this->increase_attemps();
109
		} elseif($this->username == '') {
110
			$this->message = $MESSAGE['LOGIN']['USERNAME_BLANK'];
111
			$this->increase_attemps();
112
		} elseif($this->password == '') {
113
			$this->message = $MESSAGE['LOGIN']['PASSWORD_BLANK'];
114
			$this->increase_attemps();
115
		} elseif($this->username_len < $config_array['MIN_USERNAME_LEN']) {
116
			$this->message = $MESSAGE['LOGIN']['USERNAME_TOO_SHORT'];
117
			$this->increase_attemps();
118
		} elseif($this->password_len < $config_array['MIN_PASSWORD_LEN']) {
119
			$this->message = $MESSAGE['LOGIN']['PASSWORD_TOO_SHORT'];
120
			$this->increase_attemps();
121
		} elseif($this->username_len > $config_array['MAX_USERNAME_LEN']) {
122
			$this->message = $MESSAGE['LOGIN']['USERNAME_TOO_LONG'];
123
			$this->increase_attemps();
124
		} elseif($this->password_len > $config_array['MAX_PASSWORD_LEN']) {
125
			$this->message = $MESSAGE['LOGIN']['PASSWORD_TOO_LONG'];
126
			$this->increase_attemps();
127
		} else {
128
			// Check if the user exists (authenticate them)
129
			$this->password = md5($this->password);
130
			if($this->authenticate()) {
131
				// Authentication successful
132
				//echo $this->url;exit();
133
				header("Location: ".$this->url);
134
				exit(0);
135
			} else {
136
				$this->message = $MESSAGE['LOGIN']['AUTHENTICATION_FAILED'];
137
				$this->increase_attemps();
138
			}
139
		}
140
	}
141
142
	// Authenticate the user (check if they exist in the database)
143
	function authenticate() {
144
		// Get user information
145
		$database = new database();
146
		$query = "SELECT * FROM ".$this->USERS_TABLE." WHERE username = '".$this->username."' AND password = '".$this->password."' AND active = '1'";
147
		$results = $database->query($query);
148
		$results_array = $results->fetchRow();
149
		$num_rows = $results->numRows();
150
		if($num_rows) {
151
			$user_id = $results_array['user_id'];
152
			$this->user_id = $user_id;
153
			$_SESSION['USER_ID'] = $user_id;
154
			$_SESSION['GROUP_ID'] = $results_array['group_id'];
155
			$_SESSION['GROUPS_ID'] = $results_array['groups_id'];
156
			$_SESSION['USERNAME'] = $results_array['username'];
157
			$_SESSION['DISPLAY_NAME'] = $results_array['display_name'];
158
			$_SESSION['EMAIL'] = $results_array['email'];
159
			$_SESSION['HOME_FOLDER'] = $results_array['home_folder'];
160
			// Run remember function if needed
161
			if($this->remember == true) {
162
				$this->remember($this->user_id);
163
			}
164
			// Set language
165
			if($results_array['language'] != '') {
166
				$_SESSION['LANGUAGE'] = $results_array['language'];
167
			}
168
			// Set timezone
169
			if($results_array['timezone'] != '-72000') {
170
				$_SESSION['TIMEZONE'] = $results_array['timezone'];
171
			} else {
172
				// Set a session var so apps can tell user is using default tz
173
				$_SESSION['USE_DEFAULT_TIMEZONE'] = true;
174
			}
175
			// Set date format
176
			if($results_array['date_format'] != '') {
177
				$_SESSION['DATE_FORMAT'] = $results_array['date_format'];
178
			} else {
179
				// Set a session var so apps can tell user is using default date format
180
				$_SESSION['USE_DEFAULT_DATE_FORMAT'] = true;
181
			}
182
			// Set time format
183
			if($results_array['time_format'] != '') {
184
				$_SESSION['TIME_FORMAT'] = $results_array['time_format'];
185
			} else {
186
				// Set a session var so apps can tell user is using default time format
187
				$_SESSION['USE_DEFAULT_TIME_FORMAT'] = true;
188
			}
189
			// Get group information
190
//			$query = "SELECT * FROM ".$this->GROUPS_TABLE." WHERE group_id = '".$this->get_session('GROUP_ID')."'";
191
//			$results = $database->query($query);
192
//			$results_array = $results->fetchRow();
193
//			$_SESSION['GROUP_NAME'] = $results_array['name'];
194
//			// Set system permissions
195
//			if($results_array['system_permissions'] != '') {
196
//				$_SESSION['SYSTEM_PERMISSIONS'] = explode(',', $results_array['system_permissions']);
197
//			} else {
198
//				$_SESSION['SYSTEM_PERMISSIONS'] = array();
199
//			}
200
//			// Set module permissions
201
//			if($results_array['module_permissions'] != '') {
202
//				$_SESSION['MODULE_PERMISSIONS'] = explode(',', $results_array['module_permissions']);
203
//			} else {
204
//				$_SESSION['MODULE_PERMISSIONS'] = array();
205
//			}
206
//			// Set template permissions
207
//			if($results_array['template_permissions'] != '') {
208
//				$_SESSION['TEMPLATE_PERMISSIONS'] = explode(',', $results_array['template_permissions']);
209
//			} else {
210
//				$_SESSION['TEMPLATE_PERMISSIONS'] = array();
211
//			}
212
213
			$_SESSION['SYSTEM_PERMISSIONS'] = array();
214
			$_SESSION['MODULE_PERMISSIONS'] = array();
215
			$_SESSION['TEMPLATE_PERMISSIONS'] = array();
216
			$_SESSION['GROUP_NAME'] = array();
217
218
			$first_group = true;
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			foreach (explode(",", $this->get_session('GROUPS_ID')) as $cur_group_id)
220
            {
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				$query = "SELECT * FROM ".$this->GROUPS_TABLE." WHERE group_id = '".$cur_group_id."'";
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				$results = $database->query($query);
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				$results_array = $results->fetchRow();
224
				$_SESSION['GROUP_NAME'][$cur_group_id] = $results_array['name'];
225
				// Set system permissions
226
				if($results_array['system_permissions'] != '') {
227
					$_SESSION['SYSTEM_PERMISSIONS'] = array_merge($_SESSION['SYSTEM_PERMISSIONS'], explode(',', $results_array['system_permissions']));
228
				}
229
				// Set module permissions
230
				if($results_array['module_permissions'] != '') {
231
					if ($first_group) {
232
          	$_SESSION['MODULE_PERMISSIONS'] = explode(',', $results_array['module_permissions']);
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          } else {
234
          	$_SESSION['MODULE_PERMISSIONS'] = array_intersect($_SESSION['MODULE_PERMISSIONS'], explode(',', $results_array['module_permissions']));
235
					}
236
				}
237
				// Set template permissions
238
				if($results_array['template_permissions'] != '') {
239
					if ($first_group) {
240
          	$_SESSION['TEMPLATE_PERMISSIONS'] = explode(',', $results_array['template_permissions']);
241
          } else {
242
          	$_SESSION['TEMPLATE_PERMISSIONS'] = array_intersect($_SESSION['TEMPLATE_PERMISSIONS'], explode(',', $results_array['template_permissions']));
243
					}
244
				}
245
				$first_group = false;
246
			}
247
248
			// Update the users table with current ip and timestamp
249
			$get_ts = time();
250
			$get_ip = $_SERVER['REMOTE_ADDR'];
251
			$query = "UPDATE ".$this->USERS_TABLE." SET login_when = '$get_ts', login_ip = '$get_ip' WHERE user_id = '$user_id'";
252
			$database->query($query);
253
		}
254
		// Return if the user exists or not
255
		return $num_rows;
256
	}
257
258
	// Increase the count for login attemps
259
	function increase_attemps() {
260
		if(!isset($_SESSION['ATTEMPS'])) {
261
			$_SESSION['ATTEMPS'] = 0;
262
		} else {
263
			$_SESSION['ATTEMPS'] = $this->get_session('ATTEMPS')+1;
264
		}
265
		$this->display_login();
266
	}
267
268
	// Function to set a "remembering" cookie for the user
269
	function remember($user_id) {
270
		$remember_key = '';
271
		// Generate user id to append to the remember key
272
		$length = 11-strlen($user_id);
273
		if($length > 0) {
274
			for($i = 1; $i <= $length; $i++) {
275
				$remember_key .= '0';
276
			}
277
		}
278
		// Generate remember key
279
		$remember_key .= $user_id.'_';
280
		$salt = "abchefghjkmnpqrstuvwxyz0123456789";
281
		srand((double)microtime()*1000000);
282
		$i = 0;
283
		while ($i <= 10) {
284
			$num = rand() % 33;
285
			$tmp = substr($salt, $num, 1);
286
			$remember_key = $remember_key . $tmp;
287
			$i++;
288
		}
289
		$remember_key = $remember_key;
290
		// Update the remember key in the db
291
		$database = new database();
292
		$database->query("UPDATE ".$this->USERS_TABLE." SET remember_key = '$remember_key' WHERE user_id = '$user_id' LIMIT 1");
293
		if($database->is_error()) {
294
			return false;
295
		} else {
296
			// Workout options for the cookie
297
			$cookie_name = 'REMEMBER_KEY';
298
			$cookie_value = $remember_key;
299
			$cookie_expire = time()+60*60*24*30;
300
			// Set the cookie
301
			if(setcookie($cookie_name, $cookie_value, $cookie_expire, '/')) {
302
				return true;
303
			} else {
304
				return false;
305
			}
306
		}
307
	}
308
309
	// Function to check if a user has been remembered
310
	function is_remembered() {
311
		if(isset($_COOKIE['REMEMBER_KEY']) AND $_COOKIE['REMEMBER_KEY'] != '') {
312
			// Check if the remember key is correct
313
			$database = new database();
314
			$sql = "SELECT `user_id` FROM `" . $this->USERS_TABLE . "` WHERE `remember_key` = '";
315
			$sql .= $this->get_safe_remember_key() . "' LIMIT 1";
316
			$check_query = $database->query($sql);
317
318
			if($check_query->numRows() > 0) {
319
				$check_fetch = $check_query->fetchRow();
320
				$user_id = $check_fetch['user_id'];
321
				// Check the remember key prefix
322
				$remember_key_prefix = '';
323
				$length = 11-strlen($user_id);
324
				if($length > 0) {
325
					for($i = 1; $i <= $length; $i++) {
326
						$remember_key_prefix .= '0';
327
					}
328
				}
329
				$remember_key_prefix .= $user_id.'_';
330
				$length = strlen($remember_key_prefix);
331
				if(substr($_COOKIE['REMEMBER_KEY'], 0, $length) == $remember_key_prefix) {
332
					return true;
333
				} else {
334
					return false;
335
				}
336
			} else {
337
				return false;
338
			}
339
		} else {
340
			return false;
341
		}
342
	}
343
344
	// Display the login screen
345
	function display_login() {
346
		// Get language vars
347
		global $MESSAGE;
348
		global $MENU;
349
		global $TEXT;
350
		// If attemps more than allowed, warn the user
351
		if($this->get_session('ATTEMPS') > $this->max_attemps) {
352
			$this->warn();
353
		}
354
		// Show the login form
355
		if($this->frontend != true) {
356
			require_once(WB_PATH.'/include/phplib/template.inc');
357
			$template = new Template($this->template_dir);
358
			$template->set_file('page', $this->template_file);
359
			$template->set_block('page', 'mainBlock', 'main');
360
			if($this->remember_me_option != true) {
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				$template->set_var('DISPLAY_REMEMBER_ME', 'display: none;');
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			} else {
363
				$template->set_var('DISPLAY_REMEMBER_ME', '');
364
			}
365
			$template->set_var(array(
366
											'ACTION_URL' => $this->login_url,
367
											'ATTEMPS' => $this->get_session('ATTEMPS'),
368
											'USERNAME' => $this->username,
369
											'USERNAME_FIELDNAME' => $this->username_fieldname,
370
											'PASSWORD_FIELDNAME' => $this->password_fieldname,
371
											'MESSAGE' => $this->message,
372
											'INTERFACE_DIR_URL' =>  ADMIN_URL.'/interface',
373
											'MAX_USERNAME_LEN' => $this->max_username_len,
374
											'MAX_PASSWORD_LEN' => $this->max_password_len,
375
											'WB_URL' => WB_URL,
376
											'THEME_URL' => THEME_URL,
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                                            'VERSION' => VERSION,
378
                                            'REVISION' => REVISION,
379 1189 Luisehahne
											'LANGUAGE' => strtolower(LANGUAGE),
380
											'FORGOTTEN_DETAILS_APP' => $this->forgotten_details_app,
381
											'TEXT_FORGOTTEN_DETAILS' => $TEXT['FORGOTTEN_DETAILS'],
382
											'TEXT_USERNAME' => $TEXT['USERNAME'],
383
											'TEXT_PASSWORD' => $TEXT['PASSWORD'],
384
											'TEXT_REMEMBER_ME' => $TEXT['REMEMBER_ME'],
385
											'TEXT_LOGIN' => $TEXT['LOGIN'],
386
											'TEXT_HOME' => $TEXT['HOME'],
387
											'PAGES_DIRECTORY' => PAGES_DIRECTORY,
388
											'SECTION_LOGIN' => $MENU['LOGIN']
389
											)
390
									);
391
			if(defined('DEFAULT_CHARSET')) {
392
				$charset=DEFAULT_CHARSET;
393
			} else {
394
				$charset='utf-8';
395
			}
396
397
			$template->set_var('CHARSET', $charset);
398
399
400
			$template->parse('main', 'mainBlock', false);
401
			$template->pparse('output', 'page');
402
		}
403
	}
404
405
	// sanities the REMEMBER_KEY cookie to avoid SQL injection
406
	function get_safe_remember_key() {
407
		if (!((strlen($_COOKIE['REMEMBER_KEY']) == 23) && (substr($_COOKIE['REMEMBER_KEY'], 11, 1) == '_'))) return '';
408
		// create a clean cookie (XXXXXXXXXXX_YYYYYYYYYYY) where X:= numeric, Y:= hash
409
		$clean_cookie = sprintf('%011d', (int) substr($_COOKIE['REMEMBER_KEY'], 0, 11)) . substr($_COOKIE['REMEMBER_KEY'], 11);
410
		return ($clean_cookie == $_COOKIE['REMEMBER_KEY']) ? $this->add_slashes($clean_cookie) : '';
411
	}
412
413
	// Warn user that they have had to many login attemps
414
	function warn() {
415
		header('Location: '.$this->warning_url);
416
		exit(0);
417
	}
418
419
}
420
421 239 stefan
?>