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annotate forum/Sources/Security.php @ 76:e3e11437ecea website

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Add forum code
author Chris Cannam
date Sun, 07 Jul 2013 11:25:48 +0200
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Chris@76 1 <?php
Chris@76 2
Chris@76 3 /**
Chris@76 4 * Simple Machines Forum (SMF)
Chris@76 5 *
Chris@76 6 * @package SMF
Chris@76 7 * @author Simple Machines http://www.simplemachines.org
Chris@76 8 * @copyright 2011 Simple Machines
Chris@76 9 * @license http://www.simplemachines.org/about/smf/license.php BSD
Chris@76 10 *
Chris@76 11 * @version 2.0.3
Chris@76 12 */
Chris@76 13
Chris@76 14 if (!defined('SMF'))
Chris@76 15 die('Hacking attempt...');
Chris@76 16
Chris@76 17 /* This file has the very important job of insuring forum security. This
Chris@76 18 task includes banning and permissions, namely. It does this by providing
Chris@76 19 the following functions:
Chris@76 20
Chris@76 21 void validateSession()
Chris@76 22 - makes sure the user is who they claim to be by requiring a
Chris@76 23 password to be typed in every hour.
Chris@76 24 - is turned on and off by the securityDisable setting.
Chris@76 25 - uses the adminLogin() function of Subs-Auth.php if they need to
Chris@76 26 login, which saves all request (post and get) data.
Chris@76 27
Chris@76 28 void is_not_guest(string message = '')
Chris@76 29 - checks if the user is currently a guest, and if so asks them to
Chris@76 30 login with a message telling them why.
Chris@76 31 - message is what to tell them when asking them to login.
Chris@76 32
Chris@76 33 void is_not_banned(bool force_check = false)
Chris@76 34 - checks if the user is banned, and if so dies with an error.
Chris@76 35 - caches this information for optimization purposes.
Chris@76 36 - forces a recheck if force_check is true.
Chris@76 37
Chris@76 38 void banPermissions()
Chris@76 39 - applies any states of banning by removing permissions the user
Chris@76 40 cannot have.
Chris@76 41
Chris@76 42 void log_ban(array ban_ids = array(), string email = null)
Chris@76 43 - log the current user in the ban logs.
Chris@76 44 - increment the hit counters for the specified ban ID's (if any.)
Chris@76 45
Chris@76 46 void isBannedEmail(string email, string restriction, string error)
Chris@76 47 - check if a given email is banned.
Chris@76 48 - performs an immediate ban if the turns turns out positive.
Chris@76 49
Chris@76 50 string checkSession(string type = 'post', string from_action = none,
Chris@76 51 is_fatal = true)
Chris@76 52 - checks the current session, verifying that the person is who he or
Chris@76 53 she should be.
Chris@76 54 - also checks the referrer to make sure they didn't get sent here.
Chris@76 55 - depends on the disableCheckUA setting, which is usually missing.
Chris@76 56 - will check GET, POST, or REQUEST depending on the passed type.
Chris@76 57 - also optionally checks the referring action if passed. (note that
Chris@76 58 the referring action must be by GET.)
Chris@76 59 - returns the error message if is_fatal is false.
Chris@76 60
Chris@76 61 bool checkSubmitOnce(string action, bool is_fatal = true)
Chris@76 62 - registers a sequence number for a form.
Chris@76 63 - checks whether a submitted sequence number is registered in the
Chris@76 64 current session.
Chris@76 65 - depending on the value of is_fatal shows an error or returns true or
Chris@76 66 false.
Chris@76 67 - frees a sequence number from the stack after it's been checked.
Chris@76 68 - frees a sequence number without checking if action == 'free'.
Chris@76 69
Chris@76 70 bool allowedTo(string permission, array boards = current)
Chris@76 71 - checks whether the user is allowed to do permission. (ie. post_new.)
Chris@76 72 - if boards is specified, checks those boards instead of the current
Chris@76 73 one.
Chris@76 74 - always returns true if the user is an administrator.
Chris@76 75 - returns true if he or she can do it, false otherwise.
Chris@76 76
Chris@76 77 void isAllowedTo(string permission, array boards = current)
Chris@76 78 - uses allowedTo() to check if the user is allowed to do permission.
Chris@76 79 - checks the passed boards or current board for the permission.
Chris@76 80 - if they are not, it loads the Errors language file and shows an
Chris@76 81 error using $txt['cannot_' . $permission].
Chris@76 82 - if they are a guest and cannot do it, this calls is_not_guest().
Chris@76 83
Chris@76 84 array boardsAllowedTo(string permission, bool check_access = false)
Chris@76 85 - returns a list of boards on which the user is allowed to do the
Chris@76 86 specified permission.
Chris@76 87 - returns an array with only a 0 in it if the user has permission
Chris@76 88 to do this on every board.
Chris@76 89 - returns an empty array if he or she cannot do this on any board.
Chris@76 90 - if check_access is true will also make sure the group has proper access to that board.
Chris@76 91
Chris@76 92 string showEmailAddress(string userProfile_hideEmail, int userProfile_id)
Chris@76 93 - returns whether an email address should be shown and how.
Chris@76 94 - possible outcomes are
Chris@76 95 'yes': show the full email address
Chris@76 96 'yes_permission_override': show the full email address, either you
Chris@76 97 are a moderator or it's your own email address.
Chris@76 98 'no_through_forum': don't show the email address, but do allow
Chris@76 99 things to be mailed using the built-in forum mailer.
Chris@76 100 'no': keep the email address hidden.
Chris@76 101 */
Chris@76 102
Chris@76 103 // Check if the user is who he/she says he is
Chris@76 104 function validateSession()
Chris@76 105 {
Chris@76 106 global $modSettings, $sourcedir, $user_info, $sc, $user_settings;
Chris@76 107
Chris@76 108 // We don't care if the option is off, because Guests should NEVER get past here.
Chris@76 109 is_not_guest();
Chris@76 110
Chris@76 111 // If we're using XML give an additional ten minutes grace as an admin can't log on in XML mode.
Chris@76 112 $refreshTime = isset($_GET['xml']) ? 4200 : 3600;
Chris@76 113
Chris@76 114 // Is the security option off? Or are they already logged in?
Chris@76 115 if (!empty($modSettings['securityDisable']) || (!empty($_SESSION['admin_time']) && $_SESSION['admin_time'] + $refreshTime >= time()))
Chris@76 116 return;
Chris@76 117
Chris@76 118 require_once($sourcedir . '/Subs-Auth.php');
Chris@76 119
Chris@76 120 // Hashed password, ahoy!
Chris@76 121 if (isset($_POST['admin_hash_pass']) && strlen($_POST['admin_hash_pass']) == 40)
Chris@76 122 {
Chris@76 123 checkSession();
Chris@76 124
Chris@76 125 $good_password = in_array(true, call_integration_hook('integrate_verify_password', array($user_info['username'], $_POST['admin_hash_pass'], true)), true);
Chris@76 126
Chris@76 127 if ($good_password || $_POST['admin_hash_pass'] == sha1($user_info['passwd'] . $sc))
Chris@76 128 {
Chris@76 129 $_SESSION['admin_time'] = time();
Chris@76 130 unset($_SESSION['request_referer']);
Chris@76 131 return;
Chris@76 132 }
Chris@76 133 }
Chris@76 134 // Posting the password... check it.
Chris@76 135 if (isset($_POST['admin_pass']))
Chris@76 136 {
Chris@76 137 checkSession();
Chris@76 138
Chris@76 139 $good_password = in_array(true, call_integration_hook('integrate_verify_password', array($user_info['username'], $_POST['admin_pass'], false)), true);
Chris@76 140
Chris@76 141 // Password correct?
Chris@76 142 if ($good_password || sha1(strtolower($user_info['username']) . $_POST['admin_pass']) == $user_info['passwd'])
Chris@76 143 {
Chris@76 144 $_SESSION['admin_time'] = time();
Chris@76 145 unset($_SESSION['request_referer']);
Chris@76 146 return;
Chris@76 147 }
Chris@76 148 }
Chris@76 149 // OpenID?
Chris@76 150 if (!empty($user_settings['openid_uri']))
Chris@76 151 {
Chris@76 152 require_once($sourcedir . '/Subs-OpenID.php');
Chris@76 153 smf_openID_revalidate();
Chris@76 154
Chris@76 155 $_SESSION['admin_time'] = time();
Chris@76 156 unset($_SESSION['request_referer']);
Chris@76 157 return;
Chris@76 158 }
Chris@76 159
Chris@76 160 // Better be sure to remember the real referer
Chris@76 161 if (empty($_SESSION['request_referer']))
Chris@76 162 $_SESSION['request_referer'] = isset($_SERVER['HTTP_REFERER']) ? @parse_url($_SERVER['HTTP_REFERER']) : array();
Chris@76 163 elseif (empty($_POST))
Chris@76 164 unset($_SESSION['request_referer']);
Chris@76 165 // Need to type in a password for that, man.
Chris@76 166 adminLogin();
Chris@76 167 }
Chris@76 168
Chris@76 169 // Require a user who is logged in. (not a guest.)
Chris@76 170 function is_not_guest($message = '')
Chris@76 171 {
Chris@76 172 global $user_info, $txt, $context, $scripturl;
Chris@76 173
Chris@76 174 // Luckily, this person isn't a guest.
Chris@76 175 if (!$user_info['is_guest'])
Chris@76 176 return;
Chris@76 177
Chris@76 178 // People always worry when they see people doing things they aren't actually doing...
Chris@76 179 $_GET['action'] = '';
Chris@76 180 $_GET['board'] = '';
Chris@76 181 $_GET['topic'] = '';
Chris@76 182 writeLog(true);
Chris@76 183
Chris@76 184 // Just die.
Chris@76 185 if (isset($_REQUEST['xml']))
Chris@76 186 obExit(false);
Chris@76 187
Chris@76 188 // Attempt to detect if they came from dlattach.
Chris@76 189 if (!WIRELESS && SMF != 'SSI' && empty($context['theme_loaded']))
Chris@76 190 loadTheme();
Chris@76 191
Chris@76 192 // Never redirect to an attachment
Chris@76 193 if (strpos($_SERVER['REQUEST_URL'], 'dlattach') === false)
Chris@76 194 $_SESSION['login_url'] = $_SERVER['REQUEST_URL'];
Chris@76 195
Chris@76 196 // Load the Login template and language file.
Chris@76 197 loadLanguage('Login');
Chris@76 198
Chris@76 199 // Are we in wireless mode?
Chris@76 200 if (WIRELESS)
Chris@76 201 {
Chris@76 202 $context['login_error'] = $message ? $message : $txt['only_members_can_access'];
Chris@76 203 $context['sub_template'] = WIRELESS_PROTOCOL . '_login';
Chris@76 204 }
Chris@76 205 // Apparently we're not in a position to handle this now. Let's go to a safer location for now.
Chris@76 206 elseif (empty($context['template_layers']))
Chris@76 207 {
Chris@76 208 $_SESSION['login_url'] = $scripturl . '?' . $_SERVER['QUERY_STRING'];
Chris@76 209 redirectexit('action=login');
Chris@76 210 }
Chris@76 211 else
Chris@76 212 {
Chris@76 213 loadTemplate('Login');
Chris@76 214 $context['sub_template'] = 'kick_guest';
Chris@76 215 $context['robot_no_index'] = true;
Chris@76 216 }
Chris@76 217
Chris@76 218 // Use the kick_guest sub template...
Chris@76 219 $context['kick_message'] = $message;
Chris@76 220 $context['page_title'] = $txt['login'];
Chris@76 221
Chris@76 222 obExit();
Chris@76 223
Chris@76 224 // We should never get to this point, but if we did we wouldn't know the user isn't a guest.
Chris@76 225 trigger_error('Hacking attempt...', E_USER_ERROR);
Chris@76 226 }
Chris@76 227
Chris@76 228 // Do banning related stuff. (ie. disallow access....)
Chris@76 229 function is_not_banned($forceCheck = false)
Chris@76 230 {
Chris@76 231 global $txt, $modSettings, $context, $user_info;
Chris@76 232 global $sourcedir, $cookiename, $user_settings, $smcFunc;
Chris@76 233
Chris@76 234 // You cannot be banned if you are an admin - doesn't help if you log out.
Chris@76 235 if ($user_info['is_admin'])
Chris@76 236 return;
Chris@76 237
Chris@76 238 // Only check the ban every so often. (to reduce load.)
Chris@76 239 if ($forceCheck || !isset($_SESSION['ban']) || empty($modSettings['banLastUpdated']) || ($_SESSION['ban']['last_checked'] < $modSettings['banLastUpdated']) || $_SESSION['ban']['id_member'] != $user_info['id'] || $_SESSION['ban']['ip'] != $user_info['ip'] || $_SESSION['ban']['ip2'] != $user_info['ip2'] || (isset($user_info['email'], $_SESSION['ban']['email']) && $_SESSION['ban']['email'] != $user_info['email']))
Chris@76 240 {
Chris@76 241 // Innocent until proven guilty. (but we know you are! :P)
Chris@76 242 $_SESSION['ban'] = array(
Chris@76 243 'last_checked' => time(),
Chris@76 244 'id_member' => $user_info['id'],
Chris@76 245 'ip' => $user_info['ip'],
Chris@76 246 'ip2' => $user_info['ip2'],
Chris@76 247 'email' => $user_info['email'],
Chris@76 248 );
Chris@76 249
Chris@76 250 $ban_query = array();
Chris@76 251 $ban_query_vars = array('current_time' => time());
Chris@76 252 $flag_is_activated = false;
Chris@76 253
Chris@76 254 // Check both IP addresses.
Chris@76 255 foreach (array('ip', 'ip2') as $ip_number)
Chris@76 256 {
Chris@76 257 // Check if we have a valid IP address.
Chris@76 258 if (preg_match('/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/', $user_info[$ip_number], $ip_parts) == 1)
Chris@76 259 {
Chris@76 260 $ban_query[] = '((' . $ip_parts[1] . ' BETWEEN bi.ip_low1 AND bi.ip_high1)
Chris@76 261 AND (' . $ip_parts[2] . ' BETWEEN bi.ip_low2 AND bi.ip_high2)
Chris@76 262 AND (' . $ip_parts[3] . ' BETWEEN bi.ip_low3 AND bi.ip_high3)
Chris@76 263 AND (' . $ip_parts[4] . ' BETWEEN bi.ip_low4 AND bi.ip_high4))';
Chris@76 264
Chris@76 265 // IP was valid, maybe there's also a hostname...
Chris@76 266 if (empty($modSettings['disableHostnameLookup']))
Chris@76 267 {
Chris@76 268 $hostname = host_from_ip($user_info[$ip_number]);
Chris@76 269 if (strlen($hostname) > 0)
Chris@76 270 {
Chris@76 271 $ban_query[] = '({string:hostname} LIKE bi.hostname)';
Chris@76 272 $ban_query_vars['hostname'] = $hostname;
Chris@76 273 }
Chris@76 274 }
Chris@76 275 }
Chris@76 276 // We use '255.255.255.255' for 'unknown' since it's not valid anyway.
Chris@76 277 elseif ($user_info['ip'] == 'unknown')
Chris@76 278 $ban_query[] = '(bi.ip_low1 = 255 AND bi.ip_high1 = 255
Chris@76 279 AND bi.ip_low2 = 255 AND bi.ip_high2 = 255
Chris@76 280 AND bi.ip_low3 = 255 AND bi.ip_high3 = 255
Chris@76 281 AND bi.ip_low4 = 255 AND bi.ip_high4 = 255)';
Chris@76 282 }
Chris@76 283
Chris@76 284 // Is their email address banned?
Chris@76 285 if (strlen($user_info['email']) != 0)
Chris@76 286 {
Chris@76 287 $ban_query[] = '({string:email} LIKE bi.email_address)';
Chris@76 288 $ban_query_vars['email'] = $user_info['email'];
Chris@76 289 }
Chris@76 290
Chris@76 291 // How about this user?
Chris@76 292 if (!$user_info['is_guest'] && !empty($user_info['id']))
Chris@76 293 {
Chris@76 294 $ban_query[] = 'bi.id_member = {int:id_member}';
Chris@76 295 $ban_query_vars['id_member'] = $user_info['id'];
Chris@76 296 }
Chris@76 297
Chris@76 298 // Check the ban, if there's information.
Chris@76 299 if (!empty($ban_query))
Chris@76 300 {
Chris@76 301 $restrictions = array(
Chris@76 302 'cannot_access',
Chris@76 303 'cannot_login',
Chris@76 304 'cannot_post',
Chris@76 305 'cannot_register',
Chris@76 306 );
Chris@76 307 $request = $smcFunc['db_query']('', '
Chris@76 308 SELECT bi.id_ban, bi.email_address, bi.id_member, bg.cannot_access, bg.cannot_register,
Chris@76 309 bg.cannot_post, bg.cannot_login, bg.reason, IFNULL(bg.expire_time, 0) AS expire_time
Chris@76 310 FROM {db_prefix}ban_items AS bi
Chris@76 311 INNER JOIN {db_prefix}ban_groups AS bg ON (bg.id_ban_group = bi.id_ban_group AND (bg.expire_time IS NULL OR bg.expire_time > {int:current_time}))
Chris@76 312 WHERE
Chris@76 313 (' . implode(' OR ', $ban_query) . ')',
Chris@76 314 $ban_query_vars
Chris@76 315 );
Chris@76 316 // Store every type of ban that applies to you in your session.
Chris@76 317 while ($row = $smcFunc['db_fetch_assoc']($request))
Chris@76 318 {
Chris@76 319 foreach ($restrictions as $restriction)
Chris@76 320 if (!empty($row[$restriction]))
Chris@76 321 {
Chris@76 322 $_SESSION['ban'][$restriction]['reason'] = $row['reason'];
Chris@76 323 $_SESSION['ban'][$restriction]['ids'][] = $row['id_ban'];
Chris@76 324 if (!isset($_SESSION['ban']['expire_time']) || ($_SESSION['ban']['expire_time'] != 0 && ($row['expire_time'] == 0 || $row['expire_time'] > $_SESSION['ban']['expire_time'])))
Chris@76 325 $_SESSION['ban']['expire_time'] = $row['expire_time'];
Chris@76 326
Chris@76 327 if (!$user_info['is_guest'] && $restriction == 'cannot_access' && ($row['id_member'] == $user_info['id'] || $row['email_address'] == $user_info['email']))
Chris@76 328 $flag_is_activated = true;
Chris@76 329 }
Chris@76 330 }
Chris@76 331 $smcFunc['db_free_result']($request);
Chris@76 332 }
Chris@76 333
Chris@76 334 // Mark the cannot_access and cannot_post bans as being 'hit'.
Chris@76 335 if (isset($_SESSION['ban']['cannot_access']) || isset($_SESSION['ban']['cannot_post']) || isset($_SESSION['ban']['cannot_login']))
Chris@76 336 log_ban(array_merge(isset($_SESSION['ban']['cannot_access']) ? $_SESSION['ban']['cannot_access']['ids'] : array(), isset($_SESSION['ban']['cannot_post']) ? $_SESSION['ban']['cannot_post']['ids'] : array(), isset($_SESSION['ban']['cannot_login']) ? $_SESSION['ban']['cannot_login']['ids'] : array()));
Chris@76 337
Chris@76 338 // If for whatever reason the is_activated flag seems wrong, do a little work to clear it up.
Chris@76 339 if ($user_info['id'] && (($user_settings['is_activated'] >= 10 && !$flag_is_activated)
Chris@76 340 || ($user_settings['is_activated'] < 10 && $flag_is_activated)))
Chris@76 341 {
Chris@76 342 require_once($sourcedir . '/ManageBans.php');
Chris@76 343 updateBanMembers();
Chris@76 344 }
Chris@76 345 }
Chris@76 346
Chris@76 347 // Hey, I know you! You're ehm...
Chris@76 348 if (!isset($_SESSION['ban']['cannot_access']) && !empty($_COOKIE[$cookiename . '_']))
Chris@76 349 {
Chris@76 350 $bans = explode(',', $_COOKIE[$cookiename . '_']);
Chris@76 351 foreach ($bans as $key => $value)
Chris@76 352 $bans[$key] = (int) $value;
Chris@76 353 $request = $smcFunc['db_query']('', '
Chris@76 354 SELECT bi.id_ban, bg.reason
Chris@76 355 FROM {db_prefix}ban_items AS bi
Chris@76 356 INNER JOIN {db_prefix}ban_groups AS bg ON (bg.id_ban_group = bi.id_ban_group)
Chris@76 357 WHERE bi.id_ban IN ({array_int:ban_list})
Chris@76 358 AND (bg.expire_time IS NULL OR bg.expire_time > {int:current_time})
Chris@76 359 AND bg.cannot_access = {int:cannot_access}
Chris@76 360 LIMIT ' . count($bans),
Chris@76 361 array(
Chris@76 362 'cannot_access' => 1,
Chris@76 363 'ban_list' => $bans,
Chris@76 364 'current_time' => time(),
Chris@76 365 )
Chris@76 366 );
Chris@76 367 while ($row = $smcFunc['db_fetch_assoc']($request))
Chris@76 368 {
Chris@76 369 $_SESSION['ban']['cannot_access']['ids'][] = $row['id_ban'];
Chris@76 370 $_SESSION['ban']['cannot_access']['reason'] = $row['reason'];
Chris@76 371 }
Chris@76 372 $smcFunc['db_free_result']($request);
Chris@76 373
Chris@76 374 // My mistake. Next time better.
Chris@76 375 if (!isset($_SESSION['ban']['cannot_access']))
Chris@76 376 {
Chris@76 377 require_once($sourcedir . '/Subs-Auth.php');
Chris@76 378 $cookie_url = url_parts(!empty($modSettings['localCookies']), !empty($modSettings['globalCookies']));
Chris@76 379 setcookie($cookiename . '_', '', time() - 3600, $cookie_url[1], $cookie_url[0], 0);
Chris@76 380 }
Chris@76 381 }
Chris@76 382
Chris@76 383 // If you're fully banned, it's end of the story for you.
Chris@76 384 if (isset($_SESSION['ban']['cannot_access']))
Chris@76 385 {
Chris@76 386 // We don't wanna see you!
Chris@76 387 if (!$user_info['is_guest'])
Chris@76 388 $smcFunc['db_query']('', '
Chris@76 389 DELETE FROM {db_prefix}log_online
Chris@76 390 WHERE id_member = {int:current_member}',
Chris@76 391 array(
Chris@76 392 'current_member' => $user_info['id'],
Chris@76 393 )
Chris@76 394 );
Chris@76 395
Chris@76 396 // 'Log' the user out. Can't have any funny business... (save the name!)
Chris@76 397 $old_name = isset($user_info['name']) && $user_info['name'] != '' ? $user_info['name'] : $txt['guest_title'];
Chris@76 398 $user_info['name'] = '';
Chris@76 399 $user_info['username'] = '';
Chris@76 400 $user_info['is_guest'] = true;
Chris@76 401 $user_info['is_admin'] = false;
Chris@76 402 $user_info['permissions'] = array();
Chris@76 403 $user_info['id'] = 0;
Chris@76 404 $context['user'] = array(
Chris@76 405 'id' => 0,
Chris@76 406 'username' => '',
Chris@76 407 'name' => $txt['guest_title'],
Chris@76 408 'is_guest' => true,
Chris@76 409 'is_logged' => false,
Chris@76 410 'is_admin' => false,
Chris@76 411 'is_mod' => false,
Chris@76 412 'can_mod' => false,
Chris@76 413 'language' => $user_info['language'],
Chris@76 414 );
Chris@76 415
Chris@76 416 // A goodbye present.
Chris@76 417 require_once($sourcedir . '/Subs-Auth.php');
Chris@76 418 $cookie_url = url_parts(!empty($modSettings['localCookies']), !empty($modSettings['globalCookies']));
Chris@76 419 setcookie($cookiename . '_', implode(',', $_SESSION['ban']['cannot_access']['ids']), time() + 3153600, $cookie_url[1], $cookie_url[0], 0);
Chris@76 420
Chris@76 421 // Don't scare anyone, now.
Chris@76 422 $_GET['action'] = '';
Chris@76 423 $_GET['board'] = '';
Chris@76 424 $_GET['topic'] = '';
Chris@76 425 writeLog(true);
Chris@76 426
Chris@76 427 // You banned, sucka!
Chris@76 428 fatal_error(sprintf($txt['your_ban'], $old_name) . (empty($_SESSION['ban']['cannot_access']['reason']) ? '' : '<br />' . $_SESSION['ban']['cannot_access']['reason']) . '<br />' . (!empty($_SESSION['ban']['expire_time']) ? sprintf($txt['your_ban_expires'], timeformat($_SESSION['ban']['expire_time'], false)) : $txt['your_ban_expires_never']), 'user');
Chris@76 429
Chris@76 430 // If we get here, something's gone wrong.... but let's try anyway.
Chris@76 431 trigger_error('Hacking attempt...', E_USER_ERROR);
Chris@76 432 }
Chris@76 433 // You're not allowed to log in but yet you are. Let's fix that.
Chris@76 434 elseif (isset($_SESSION['ban']['cannot_login']) && !$user_info['is_guest'])
Chris@76 435 {
Chris@76 436 // We don't wanna see you!
Chris@76 437 $smcFunc['db_query']('', '
Chris@76 438 DELETE FROM {db_prefix}log_online
Chris@76 439 WHERE id_member = {int:current_member}',
Chris@76 440 array(
Chris@76 441 'current_member' => $user_info['id'],
Chris@76 442 )
Chris@76 443 );
Chris@76 444
Chris@76 445 // 'Log' the user out. Can't have any funny business... (save the name!)
Chris@76 446 $old_name = isset($user_info['name']) && $user_info['name'] != '' ? $user_info['name'] : $txt['guest_title'];
Chris@76 447 $user_info['name'] = '';
Chris@76 448 $user_info['username'] = '';
Chris@76 449 $user_info['is_guest'] = true;
Chris@76 450 $user_info['is_admin'] = false;
Chris@76 451 $user_info['permissions'] = array();
Chris@76 452 $user_info['id'] = 0;
Chris@76 453 $context['user'] = array(
Chris@76 454 'id' => 0,
Chris@76 455 'username' => '',
Chris@76 456 'name' => $txt['guest_title'],
Chris@76 457 'is_guest' => true,
Chris@76 458 'is_logged' => false,
Chris@76 459 'is_admin' => false,
Chris@76 460 'is_mod' => false,
Chris@76 461 'can_mod' => false,
Chris@76 462 'language' => $user_info['language'],
Chris@76 463 );
Chris@76 464
Chris@76 465 // SMF's Wipe 'n Clean(r) erases all traces.
Chris@76 466 $_GET['action'] = '';
Chris@76 467 $_GET['board'] = '';
Chris@76 468 $_GET['topic'] = '';
Chris@76 469 writeLog(true);
Chris@76 470
Chris@76 471 require_once($sourcedir . '/LogInOut.php');
Chris@76 472 Logout(true, false);
Chris@76 473
Chris@76 474 fatal_error(sprintf($txt['your_ban'], $old_name) . (empty($_SESSION['ban']['cannot_login']['reason']) ? '' : '<br />' . $_SESSION['ban']['cannot_login']['reason']) . '<br />' . (!empty($_SESSION['ban']['expire_time']) ? sprintf($txt['your_ban_expires'], timeformat($_SESSION['ban']['expire_time'], false)) : $txt['your_ban_expires_never']) . '<br />' . $txt['ban_continue_browse'], 'user');
Chris@76 475 }
Chris@76 476
Chris@76 477 // Fix up the banning permissions.
Chris@76 478 if (isset($user_info['permissions']))
Chris@76 479 banPermissions();
Chris@76 480 }
Chris@76 481
Chris@76 482 // Fix permissions according to ban status.
Chris@76 483 function banPermissions()
Chris@76 484 {
Chris@76 485 global $user_info, $sourcedir, $modSettings, $context;
Chris@76 486
Chris@76 487 // Somehow they got here, at least take away all permissions...
Chris@76 488 if (isset($_SESSION['ban']['cannot_access']))
Chris@76 489 $user_info['permissions'] = array();
Chris@76 490 // Okay, well, you can watch, but don't touch a thing.
Chris@76 491 elseif (isset($_SESSION['ban']['cannot_post']) || (!empty($modSettings['warning_mute']) && $modSettings['warning_mute'] <= $user_info['warning']))
Chris@76 492 {
Chris@76 493 $denied_permissions = array(
Chris@76 494 'pm_send',
Chris@76 495 'calendar_post', 'calendar_edit_own', 'calendar_edit_any',
Chris@76 496 'poll_post',
Chris@76 497 'poll_add_own', 'poll_add_any',
Chris@76 498 'poll_edit_own', 'poll_edit_any',
Chris@76 499 'poll_lock_own', 'poll_lock_any',
Chris@76 500 'poll_remove_own', 'poll_remove_any',
Chris@76 501 'manage_attachments', 'manage_smileys', 'manage_boards', 'admin_forum', 'manage_permissions',
Chris@76 502 'moderate_forum', 'manage_membergroups', 'manage_bans', 'send_mail', 'edit_news',
Chris@76 503 'profile_identity_any', 'profile_extra_any', 'profile_title_any',
Chris@76 504 'post_new', 'post_reply_own', 'post_reply_any',
Chris@76 505 'delete_own', 'delete_any', 'delete_replies',
Chris@76 506 'make_sticky',
Chris@76 507 'merge_any', 'split_any',
Chris@76 508 'modify_own', 'modify_any', 'modify_replies',
Chris@76 509 'move_any',
Chris@76 510 'send_topic',
Chris@76 511 'lock_own', 'lock_any',
Chris@76 512 'remove_own', 'remove_any',
Chris@76 513 'post_unapproved_topics', 'post_unapproved_replies_own', 'post_unapproved_replies_any',
Chris@76 514 );
Chris@76 515 $user_info['permissions'] = array_diff($user_info['permissions'], $denied_permissions);
Chris@76 516 }
Chris@76 517 // Are they absolutely under moderation?
Chris@76 518 elseif (!empty($modSettings['warning_moderate']) && $modSettings['warning_moderate'] <= $user_info['warning'])
Chris@76 519 {
Chris@76 520 // Work out what permissions should change...
Chris@76 521 $permission_change = array(
Chris@76 522 'post_new' => 'post_unapproved_topics',
Chris@76 523 'post_reply_own' => 'post_unapproved_replies_own',
Chris@76 524 'post_reply_any' => 'post_unapproved_replies_any',
Chris@76 525 'post_attachment' => 'post_unapproved_attachments',
Chris@76 526 );
Chris@76 527 foreach ($permission_change as $old => $new)
Chris@76 528 {
Chris@76 529 if (!in_array($old, $user_info['permissions']))
Chris@76 530 unset($permission_change[$old]);
Chris@76 531 else
Chris@76 532 $user_info['permissions'][] = $new;
Chris@76 533 }
Chris@76 534 $user_info['permissions'] = array_diff($user_info['permissions'], array_keys($permission_change));
Chris@76 535 }
Chris@76 536
Chris@76 537 //!!! Find a better place to call this? Needs to be after permissions loaded!
Chris@76 538 // Finally, some bits we cache in the session because it saves queries.
Chris@76 539 if (isset($_SESSION['mc']) && $_SESSION['mc']['time'] > $modSettings['settings_updated'] && $_SESSION['mc']['id'] == $user_info['id'])
Chris@76 540 $user_info['mod_cache'] = $_SESSION['mc'];
Chris@76 541 else
Chris@76 542 {
Chris@76 543 require_once($sourcedir . '/Subs-Auth.php');
Chris@76 544 rebuildModCache();
Chris@76 545 }
Chris@76 546
Chris@76 547 // Now that we have the mod cache taken care of lets setup a cache for the number of mod reports still open
Chris@76 548 if (isset($_SESSION['rc']) && $_SESSION['rc']['time'] > $modSettings['last_mod_report_action'] && $_SESSION['rc']['id'] == $user_info['id'])
Chris@76 549 $context['open_mod_reports'] = $_SESSION['rc']['reports'];
Chris@76 550 elseif ($_SESSION['mc']['bq'] != '0=1')
Chris@76 551 {
Chris@76 552 require_once($sourcedir . '/ModerationCenter.php');
Chris@76 553 recountOpenReports();
Chris@76 554 }
Chris@76 555 else
Chris@76 556 $context['open_mod_reports'] = 0;
Chris@76 557 }
Chris@76 558
Chris@76 559 // Log a ban in the database.
Chris@76 560 function log_ban($ban_ids = array(), $email = null)
Chris@76 561 {
Chris@76 562 global $user_info, $smcFunc;
Chris@76 563
Chris@76 564 // Don't log web accelerators, it's very confusing...
Chris@76 565 if (isset($_SERVER['HTTP_X_MOZ']) && $_SERVER['HTTP_X_MOZ'] == 'prefetch')
Chris@76 566 return;
Chris@76 567
Chris@76 568 $smcFunc['db_insert']('',
Chris@76 569 '{db_prefix}log_banned',
Chris@76 570 array('id_member' => 'int', 'ip' => 'string-16', 'email' => 'string', 'log_time' => 'int'),
Chris@76 571 array($user_info['id'], $user_info['ip'], ($email === null ? ($user_info['is_guest'] ? '' : $user_info['email']) : $email), time()),
Chris@76 572 array('id_ban_log')
Chris@76 573 );
Chris@76 574
Chris@76 575 // One extra point for these bans.
Chris@76 576 if (!empty($ban_ids))
Chris@76 577 $smcFunc['db_query']('', '
Chris@76 578 UPDATE {db_prefix}ban_items
Chris@76 579 SET hits = hits + 1
Chris@76 580 WHERE id_ban IN ({array_int:ban_ids})',
Chris@76 581 array(
Chris@76 582 'ban_ids' => $ban_ids,
Chris@76 583 )
Chris@76 584 );
Chris@76 585 }
Chris@76 586
Chris@76 587 // Checks if a given email address might be banned.
Chris@76 588 function isBannedEmail($email, $restriction, $error)
Chris@76 589 {
Chris@76 590 global $txt, $smcFunc;
Chris@76 591
Chris@76 592 // Can't ban an empty email
Chris@76 593 if (empty($email) || trim($email) == '')
Chris@76 594 return;
Chris@76 595
Chris@76 596 // Let's start with the bans based on your IP/hostname/memberID...
Chris@76 597 $ban_ids = isset($_SESSION['ban'][$restriction]) ? $_SESSION['ban'][$restriction]['ids'] : array();
Chris@76 598 $ban_reason = isset($_SESSION['ban'][$restriction]) ? $_SESSION['ban'][$restriction]['reason'] : '';
Chris@76 599
Chris@76 600 // ...and add to that the email address you're trying to register.
Chris@76 601 $request = $smcFunc['db_query']('', '
Chris@76 602 SELECT bi.id_ban, bg.' . $restriction . ', bg.cannot_access, bg.reason
Chris@76 603 FROM {db_prefix}ban_items AS bi
Chris@76 604 INNER JOIN {db_prefix}ban_groups AS bg ON (bg.id_ban_group = bi.id_ban_group)
Chris@76 605 WHERE {string:email} LIKE bi.email_address
Chris@76 606 AND (bg.' . $restriction . ' = {int:cannot_access} OR bg.cannot_access = {int:cannot_access})
Chris@76 607 AND (bg.expire_time IS NULL OR bg.expire_time >= {int:now})',
Chris@76 608 array(
Chris@76 609 'email' => $email,
Chris@76 610 'cannot_access' => 1,
Chris@76 611 'now' => time(),
Chris@76 612 )
Chris@76 613 );
Chris@76 614 while ($row = $smcFunc['db_fetch_assoc']($request))
Chris@76 615 {
Chris@76 616 if (!empty($row['cannot_access']))
Chris@76 617 {
Chris@76 618 $_SESSION['ban']['cannot_access']['ids'][] = $row['id_ban'];
Chris@76 619 $_SESSION['ban']['cannot_access']['reason'] = $row['reason'];
Chris@76 620 }
Chris@76 621 if (!empty($row[$restriction]))
Chris@76 622 {
Chris@76 623 $ban_ids[] = $row['id_ban'];
Chris@76 624 $ban_reason = $row['reason'];
Chris@76 625 }
Chris@76 626 }
Chris@76 627 $smcFunc['db_free_result']($request);
Chris@76 628
Chris@76 629 // You're in biiig trouble. Banned for the rest of this session!
Chris@76 630 if (isset($_SESSION['ban']['cannot_access']))
Chris@76 631 {
Chris@76 632 log_ban($_SESSION['ban']['cannot_access']['ids']);
Chris@76 633 $_SESSION['ban']['last_checked'] = time();
Chris@76 634
Chris@76 635 fatal_error(sprintf($txt['your_ban'], $txt['guest_title']) . $_SESSION['ban']['cannot_access']['reason'], false);
Chris@76 636 }
Chris@76 637
Chris@76 638 if (!empty($ban_ids))
Chris@76 639 {
Chris@76 640 // Log this ban for future reference.
Chris@76 641 log_ban($ban_ids, $email);
Chris@76 642 fatal_error($error . $ban_reason, false);
Chris@76 643 }
Chris@76 644 }
Chris@76 645
Chris@76 646 // Make sure the user's correct session was passed, and they came from here. (type can be post, get, or request.)
Chris@76 647 function checkSession($type = 'post', $from_action = '', $is_fatal = true)
Chris@76 648 {
Chris@76 649 global $sc, $modSettings, $boardurl;
Chris@76 650
Chris@76 651 // Is it in as $_POST['sc']?
Chris@76 652 if ($type == 'post')
Chris@76 653 {
Chris@76 654 $check = isset($_POST[$_SESSION['session_var']]) ? $_POST[$_SESSION['session_var']] : (empty($modSettings['strictSessionCheck']) && isset($_POST['sc']) ? $_POST['sc'] : null);
Chris@76 655 if ($check !== $sc)
Chris@76 656 $error = 'session_timeout';
Chris@76 657 }
Chris@76 658
Chris@76 659 // How about $_GET['sesc']?
Chris@76 660 elseif ($type == 'get')
Chris@76 661 {
Chris@76 662 $check = isset($_GET[$_SESSION['session_var']]) ? $_GET[$_SESSION['session_var']] : (empty($modSettings['strictSessionCheck']) && isset($_GET['sesc']) ? $_GET['sesc'] : null);
Chris@76 663 if ($check !== $sc)
Chris@76 664 $error = 'session_verify_fail';
Chris@76 665 }
Chris@76 666
Chris@76 667 // Or can it be in either?
Chris@76 668 elseif ($type == 'request')
Chris@76 669 {
Chris@76 670 $check = isset($_GET[$_SESSION['session_var']]) ? $_GET[$_SESSION['session_var']] : (empty($modSettings['strictSessionCheck']) && isset($_GET['sesc']) ? $_GET['sesc'] : (isset($_POST[$_SESSION['session_var']]) ? $_POST[$_SESSION['session_var']] : (empty($modSettings['strictSessionCheck']) && isset($_POST['sc']) ? $_POST['sc'] : null)));
Chris@76 671
Chris@76 672 if ($check !== $sc)
Chris@76 673 $error = 'session_verify_fail';
Chris@76 674 }
Chris@76 675
Chris@76 676 // Verify that they aren't changing user agents on us - that could be bad.
Chris@76 677 if ((!isset($_SESSION['USER_AGENT']) || $_SESSION['USER_AGENT'] != $_SERVER['HTTP_USER_AGENT']) && empty($modSettings['disableCheckUA']))
Chris@76 678 $error = 'session_verify_fail';
Chris@76 679
Chris@76 680 // Make sure a page with session check requirement is not being prefetched.
Chris@76 681 if (isset($_SERVER['HTTP_X_MOZ']) && $_SERVER['HTTP_X_MOZ'] == 'prefetch')
Chris@76 682 {
Chris@76 683 ob_end_clean();
Chris@76 684 header('HTTP/1.1 403 Forbidden');
Chris@76 685 die;
Chris@76 686 }
Chris@76 687
Chris@76 688 // Check the referring site - it should be the same server at least!
Chris@76 689 if (isset($_SESSION['request_referer']))
Chris@76 690 $referrer = $_SESSION['request_referer'];
Chris@76 691 else
Chris@76 692 $referrer = isset($_SERVER['HTTP_REFERER']) ? @parse_url($_SERVER['HTTP_REFERER']) : array();
Chris@76 693 if (!empty($referrer['host']))
Chris@76 694 {
Chris@76 695 if (strpos($_SERVER['HTTP_HOST'], ':') !== false)
Chris@76 696 $real_host = substr($_SERVER['HTTP_HOST'], 0, strpos($_SERVER['HTTP_HOST'], ':'));
Chris@76 697 else
Chris@76 698 $real_host = $_SERVER['HTTP_HOST'];
Chris@76 699
Chris@76 700 $parsed_url = parse_url($boardurl);
Chris@76 701
Chris@76 702 // Are global cookies on? If so, let's check them ;).
Chris@76 703 if (!empty($modSettings['globalCookies']))
Chris@76 704 {
Chris@76 705 if (preg_match('~(?:[^\.]+\.)?([^\.]{3,}\..+)\z~i', $parsed_url['host'], $parts) == 1)
Chris@76 706 $parsed_url['host'] = $parts[1];
Chris@76 707
Chris@76 708 if (preg_match('~(?:[^\.]+\.)?([^\.]{3,}\..+)\z~i', $referrer['host'], $parts) == 1)
Chris@76 709 $referrer['host'] = $parts[1];
Chris@76 710
Chris@76 711 if (preg_match('~(?:[^\.]+\.)?([^\.]{3,}\..+)\z~i', $real_host, $parts) == 1)
Chris@76 712 $real_host = $parts[1];
Chris@76 713 }
Chris@76 714
Chris@76 715 // Okay: referrer must either match parsed_url or real_host.
Chris@76 716 if (isset($parsed_url['host']) && strtolower($referrer['host']) != strtolower($parsed_url['host']) && strtolower($referrer['host']) != strtolower($real_host))
Chris@76 717 {
Chris@76 718 $error = 'verify_url_fail';
Chris@76 719 $log_error = true;
Chris@76 720 }
Chris@76 721 }
Chris@76 722
Chris@76 723 // Well, first of all, if a from_action is specified you'd better have an old_url.
Chris@76 724 if (!empty($from_action) && (!isset($_SESSION['old_url']) || preg_match('~[?;&]action=' . $from_action . '([;&]|$)~', $_SESSION['old_url']) == 0))
Chris@76 725 {
Chris@76 726 $error = 'verify_url_fail';
Chris@76 727 $log_error = true;
Chris@76 728 }
Chris@76 729
Chris@76 730 if (strtolower($_SERVER['HTTP_USER_AGENT']) == 'hacker')
Chris@76 731 fatal_error('Sound the alarm! It\'s a hacker! Close the castle gates!!', false);
Chris@76 732
Chris@76 733 // Everything is ok, return an empty string.
Chris@76 734 if (!isset($error))
Chris@76 735 return '';
Chris@76 736 // A session error occurred, show the error.
Chris@76 737 elseif ($is_fatal)
Chris@76 738 {
Chris@76 739 if (isset($_GET['xml']))
Chris@76 740 {
Chris@76 741 ob_end_clean();
Chris@76 742 header('HTTP/1.1 403 Forbidden - Session timeout');
Chris@76 743 die;
Chris@76 744 }
Chris@76 745 else
Chris@76 746 fatal_lang_error($error, isset($log_error) ? 'user' : false);
Chris@76 747 }
Chris@76 748 // A session error occurred, return the error to the calling function.
Chris@76 749 else
Chris@76 750 return $error;
Chris@76 751
Chris@76 752 // We really should never fall through here, for very important reasons. Let's make sure.
Chris@76 753 trigger_error('Hacking attempt...', E_USER_ERROR);
Chris@76 754 }
Chris@76 755
Chris@76 756 // Check if a specific confirm parameter was given.
Chris@76 757 function checkConfirm($action)
Chris@76 758 {
Chris@76 759 global $modSettings;
Chris@76 760
Chris@76 761 if (isset($_GET['confirm']) && isset($_SESSION['confirm_' . $action]) && md5($_GET['confirm'] . $_SERVER['HTTP_USER_AGENT']) == $_SESSION['confirm_' . $action])
Chris@76 762 return true;
Chris@76 763
Chris@76 764 else
Chris@76 765 {
Chris@76 766 $token = md5(mt_rand() . session_id() . (string) microtime() . $modSettings['rand_seed']);
Chris@76 767 $_SESSION['confirm_' . $action] = md5($token . $_SERVER['HTTP_USER_AGENT']);
Chris@76 768
Chris@76 769 return $token;
Chris@76 770 }
Chris@76 771 }
Chris@76 772
Chris@76 773 // Check whether a form has been submitted twice.
Chris@76 774 function checkSubmitOnce($action, $is_fatal = true)
Chris@76 775 {
Chris@76 776 global $context;
Chris@76 777
Chris@76 778 if (!isset($_SESSION['forms']))
Chris@76 779 $_SESSION['forms'] = array();
Chris@76 780
Chris@76 781 // Register a form number and store it in the session stack. (use this on the page that has the form.)
Chris@76 782 if ($action == 'register')
Chris@76 783 {
Chris@76 784 $context['form_sequence_number'] = 0;
Chris@76 785 while (empty($context['form_sequence_number']) || in_array($context['form_sequence_number'], $_SESSION['forms']))
Chris@76 786 $context['form_sequence_number'] = mt_rand(1, 16000000);
Chris@76 787 }
Chris@76 788 // Check whether the submitted number can be found in the session.
Chris@76 789 elseif ($action == 'check')
Chris@76 790 {
Chris@76 791 if (!isset($_REQUEST['seqnum']))
Chris@76 792 return true;
Chris@76 793 elseif (!in_array($_REQUEST['seqnum'], $_SESSION['forms']))
Chris@76 794 {
Chris@76 795 $_SESSION['forms'][] = (int) $_REQUEST['seqnum'];
Chris@76 796 return true;
Chris@76 797 }
Chris@76 798 elseif ($is_fatal)
Chris@76 799 fatal_lang_error('error_form_already_submitted', false);
Chris@76 800 else
Chris@76 801 return false;
Chris@76 802 }
Chris@76 803 // Don't check, just free the stack number.
Chris@76 804 elseif ($action == 'free' && isset($_REQUEST['seqnum']) && in_array($_REQUEST['seqnum'], $_SESSION['forms']))
Chris@76 805 $_SESSION['forms'] = array_diff($_SESSION['forms'], array($_REQUEST['seqnum']));
Chris@76 806 elseif ($action != 'free')
Chris@76 807 trigger_error('checkSubmitOnce(): Invalid action \'' . $action . '\'', E_USER_WARNING);
Chris@76 808 }
Chris@76 809
Chris@76 810 // Check the user's permissions.
Chris@76 811 function allowedTo($permission, $boards = null)
Chris@76 812 {
Chris@76 813 global $user_info, $modSettings, $smcFunc;
Chris@76 814
Chris@76 815 // You're always allowed to do nothing. (unless you're a working man, MR. LAZY :P!)
Chris@76 816 if (empty($permission))
Chris@76 817 return true;
Chris@76 818
Chris@76 819 // You're never allowed to do something if your data hasn't been loaded yet!
Chris@76 820 if (empty($user_info))
Chris@76 821 return false;
Chris@76 822
Chris@76 823 // Administrators are supermen :P.
Chris@76 824 if ($user_info['is_admin'])
Chris@76 825 return true;
Chris@76 826
Chris@76 827 // Are we checking the _current_ board, or some other boards?
Chris@76 828 if ($boards === null)
Chris@76 829 {
Chris@76 830 // Check if they can do it.
Chris@76 831 if (!is_array($permission) && in_array($permission, $user_info['permissions']))
Chris@76 832 return true;
Chris@76 833 // Search for any of a list of permissions.
Chris@76 834 elseif (is_array($permission) && count(array_intersect($permission, $user_info['permissions'])) != 0)
Chris@76 835 return true;
Chris@76 836 // You aren't allowed, by default.
Chris@76 837 else
Chris@76 838 return false;
Chris@76 839 }
Chris@76 840 elseif (!is_array($boards))
Chris@76 841 $boards = array($boards);
Chris@76 842
Chris@76 843 $request = $smcFunc['db_query']('', '
Chris@76 844 SELECT MIN(bp.add_deny) AS add_deny
Chris@76 845 FROM {db_prefix}boards AS b
Chris@76 846 INNER JOIN {db_prefix}board_permissions AS bp ON (bp.id_profile = b.id_profile)
Chris@76 847 LEFT JOIN {db_prefix}moderators AS mods ON (mods.id_board = b.id_board AND mods.id_member = {int:current_member})
Chris@76 848 WHERE b.id_board IN ({array_int:board_list})
Chris@76 849 AND bp.id_group IN ({array_int:group_list}, {int:moderator_group})
Chris@76 850 AND bp.permission {raw:permission_list}
Chris@76 851 AND (mods.id_member IS NOT NULL OR bp.id_group != {int:moderator_group})
Chris@76 852 GROUP BY b.id_board',
Chris@76 853 array(
Chris@76 854 'current_member' => $user_info['id'],
Chris@76 855 'board_list' => $boards,
Chris@76 856 'group_list' => $user_info['groups'],
Chris@76 857 'moderator_group' => 3,
Chris@76 858 'permission_list' => (is_array($permission) ? 'IN (\'' . implode('\', \'', $permission) . '\')' : ' = \'' . $permission . '\''),
Chris@76 859 )
Chris@76 860 );
Chris@76 861
Chris@76 862 // Make sure they can do it on all of the boards.
Chris@76 863 if ($smcFunc['db_num_rows']($request) != count($boards))
Chris@76 864 return false;
Chris@76 865
Chris@76 866 $result = true;
Chris@76 867 while ($row = $smcFunc['db_fetch_assoc']($request))
Chris@76 868 $result &= !empty($row['add_deny']);
Chris@76 869 $smcFunc['db_free_result']($request);
Chris@76 870
Chris@76 871 // If the query returned 1, they can do it... otherwise, they can't.
Chris@76 872 return $result;
Chris@76 873 }
Chris@76 874
Chris@76 875 // Fatal error if they cannot...
Chris@76 876 function isAllowedTo($permission, $boards = null)
Chris@76 877 {
Chris@76 878 global $user_info, $txt;
Chris@76 879
Chris@76 880 static $heavy_permissions = array(
Chris@76 881 'admin_forum',
Chris@76 882 'manage_attachments',
Chris@76 883 'manage_smileys',
Chris@76 884 'manage_boards',
Chris@76 885 'edit_news',
Chris@76 886 'moderate_forum',
Chris@76 887 'manage_bans',
Chris@76 888 'manage_membergroups',
Chris@76 889 'manage_permissions',
Chris@76 890 );
Chris@76 891
Chris@76 892 // Make it an array, even if a string was passed.
Chris@76 893 $permission = is_array($permission) ? $permission : array($permission);
Chris@76 894
Chris@76 895 // Check the permission and return an error...
Chris@76 896 if (!allowedTo($permission, $boards))
Chris@76 897 {
Chris@76 898 // Pick the last array entry as the permission shown as the error.
Chris@76 899 $error_permission = array_shift($permission);
Chris@76 900
Chris@76 901 // If they are a guest, show a login. (because the error might be gone if they do!)
Chris@76 902 if ($user_info['is_guest'])
Chris@76 903 {
Chris@76 904 loadLanguage('Errors');
Chris@76 905 is_not_guest($txt['cannot_' . $error_permission]);
Chris@76 906 }
Chris@76 907
Chris@76 908 // Clear the action because they aren't really doing that!
Chris@76 909 $_GET['action'] = '';
Chris@76 910 $_GET['board'] = '';
Chris@76 911 $_GET['topic'] = '';
Chris@76 912 writeLog(true);
Chris@76 913
Chris@76 914 fatal_lang_error('cannot_' . $error_permission, false);
Chris@76 915
Chris@76 916 // Getting this far is a really big problem, but let's try our best to prevent any cases...
Chris@76 917 trigger_error('Hacking attempt...', E_USER_ERROR);
Chris@76 918 }
Chris@76 919
Chris@76 920 // If you're doing something on behalf of some "heavy" permissions, validate your session.
Chris@76 921 // (take out the heavy permissions, and if you can't do anything but those, you need a validated session.)
Chris@76 922 if (!allowedTo(array_diff($permission, $heavy_permissions), $boards))
Chris@76 923 validateSession();
Chris@76 924 }
Chris@76 925
Chris@76 926 // Return the boards a user has a certain (board) permission on. (array(0) if all.)
Chris@76 927 function boardsAllowedTo($permissions, $check_access = true)
Chris@76 928 {
Chris@76 929 global $user_info, $modSettings, $smcFunc;
Chris@76 930
Chris@76 931 // Administrators are all powerful, sorry.
Chris@76 932 if ($user_info['is_admin'])
Chris@76 933 return array(0);
Chris@76 934
Chris@76 935 // Arrays are nice, most of the time.
Chris@76 936 if (!is_array($permissions))
Chris@76 937 $permissions = array($permissions);
Chris@76 938
Chris@76 939 // All groups the user is in except 'moderator'.
Chris@76 940 $groups = array_diff($user_info['groups'], array(3));
Chris@76 941
Chris@76 942 $request = $smcFunc['db_query']('', '
Chris@76 943 SELECT b.id_board, bp.add_deny
Chris@76 944 FROM {db_prefix}board_permissions AS bp
Chris@76 945 INNER JOIN {db_prefix}boards AS b ON (b.id_profile = bp.id_profile)
Chris@76 946 LEFT JOIN {db_prefix}moderators AS mods ON (mods.id_board = b.id_board AND mods.id_member = {int:current_member})
Chris@76 947 WHERE bp.id_group IN ({array_int:group_list}, {int:moderator_group})
Chris@76 948 AND bp.permission IN ({array_string:permissions})
Chris@76 949 AND (mods.id_member IS NOT NULL OR bp.id_group != {int:moderator_group})' .
Chris@76 950 ($check_access ? ' AND {query_see_board}' : ''),
Chris@76 951 array(
Chris@76 952 'current_member' => $user_info['id'],
Chris@76 953 'group_list' => $groups,
Chris@76 954 'moderator_group' => 3,
Chris@76 955 'permissions' => $permissions,
Chris@76 956 )
Chris@76 957 );
Chris@76 958 $boards = array();
Chris@76 959 $deny_boards = array();
Chris@76 960 while ($row = $smcFunc['db_fetch_assoc']($request))
Chris@76 961 {
Chris@76 962 if (empty($row['add_deny']))
Chris@76 963 $deny_boards[] = $row['id_board'];
Chris@76 964 else
Chris@76 965 $boards[] = $row['id_board'];
Chris@76 966 }
Chris@76 967 $smcFunc['db_free_result']($request);
Chris@76 968
Chris@76 969 $boards = array_unique(array_values(array_diff($boards, $deny_boards)));
Chris@76 970
Chris@76 971 return $boards;
Chris@76 972 }
Chris@76 973
Chris@76 974 function showEmailAddress($userProfile_hideEmail, $userProfile_id)
Chris@76 975 {
Chris@76 976 global $modSettings, $user_info;
Chris@76 977
Chris@76 978 // Should this users email address be shown?
Chris@76 979 // If you're guest and the forum is set to hide email for guests: no.
Chris@76 980 // If the user is post-banned: no.
Chris@76 981 // If it's your own profile and you've set your address hidden: yes_permission_override.
Chris@76 982 // If you're a moderator with sufficient permissions: yes_permission_override.
Chris@76 983 // If the user has set their email address to be hidden: no.
Chris@76 984 // If the forum is set to show full email addresses: yes.
Chris@76 985 // Otherwise: no_through_forum.
Chris@76 986
Chris@76 987 return (!empty($modSettings['guest_hideContacts']) && $user_info['is_guest']) || isset($_SESSION['ban']['cannot_post']) ? 'no' : ((!$user_info['is_guest'] && $user_info['id'] == $userProfile_id && !$userProfile_hideEmail) || allowedTo('moderate_forum') ? 'yes_permission_override' : ($userProfile_hideEmail ? 'no' : (!empty($modSettings['make_email_viewable']) ? 'yes' : 'no_through_forum')));
Chris@76 988 }
Chris@76 989
Chris@76 990 ?>