1<?php 2/** 3 * MyBB 1.8 4 * Copyright 2014 MyBB Group, All Rights Reserved 5 * 6 * Website: http://www.mybb.com 7 * License: http://www.mybb.com/about/license 8 * 9 */ 10 11class session 12{ 13 /** 14 * @var int 15 */ 16 public $sid = 0; 17 /** 18 * @var int 19 */ 20 public $uid = 0; 21 /** 22 * @var string 23 */ 24 public $ipaddress = ''; 25 /** 26 * @var string 27 */ 28 public $packedip = ''; 29 /** 30 * @var string 31 */ 32 public $useragent = ''; 33 /** 34 * @var bool 35 */ 36 public $is_spider = false; 37 38 /** 39 * Request parameters that are to be ignored for location storage 40 * 41 * @var array 42 */ 43 public $ignore_parameters = array( 44 'my_post_key', 45 'logoutkey', 46 ); 47 48 /** 49 * Initialize a session 50 */ 51 function init() 52 { 53 global $db, $mybb, $cache, $plugins; 54 55 // Get our visitor's IP. 56 $this->ipaddress = get_ip(); 57 $this->packedip = my_inet_pton($this->ipaddress); 58 59 // Find out the user agent. 60 $this->useragent = $_SERVER['HTTP_USER_AGENT']; 61 62 // Attempt to find a session id in the cookies. 63 if(isset($mybb->cookies['sid']) && !defined('IN_UPGRADE')) 64 { 65 $sid = $db->escape_string($mybb->cookies['sid']); 66 67 // Load the session if not using a bot sid 68 if(substr($sid, 3, 1) !== '=') 69 { 70 $query = $db->simple_select("sessions", "*", "sid='{$sid}'"); 71 $session = $db->fetch_array($query); 72 if(!empty($session) && $session['sid']) 73 { 74 $this->sid = $session['sid']; 75 } 76 } 77 } 78 79 if(isset($plugins)) 80 { 81 $plugins->run_hooks('pre_session_load', $this); 82 } 83 84 // If we have a valid session id and user id, load that users session. 85 if(!empty($mybb->cookies['mybbuser'])) 86 { 87 $logon = explode("_", $mybb->cookies['mybbuser'], 2); 88 $this->load_user($logon[0], $logon[1]); 89 } 90 91 // If no user still, then we have a guest. 92 if(!isset($mybb->user['uid'])) 93 { 94 // Detect if this guest is a search engine spider. (bots don't get a cookied session ID so we first see if that's set) 95 if(!$this->sid) 96 { 97 $spiders = $cache->read("spiders"); 98 if(is_array($spiders)) 99 { 100 foreach($spiders as $spider) 101 { 102 if(my_strpos(my_strtolower($this->useragent), my_strtolower($spider['useragent'])) !== false) 103 { 104 $this->load_spider($spider['sid']); 105 } 106 } 107 } 108 } 109 110 // Still nothing? JUST A GUEST! 111 if(!$this->is_spider) 112 { 113 $this->load_guest(); 114 } 115 } 116 117 // As a token of our appreciation for getting this far (and they aren't a spider), give the user a cookie 118 if($this->sid && (!isset($mybb->cookies['sid']) || $mybb->cookies['sid'] != $this->sid) && $this->is_spider != true) 119 { 120 my_setcookie("sid", $this->sid, -1, true); 121 } 122 } 123 124 /** 125 * Load a user via the user credentials. 126 * 127 * @param int $uid The user id. 128 * @param string $loginkey The user's loginkey. 129 * @return bool 130 */ 131 function load_user($uid, $loginkey='') 132 { 133 global $mybb, $db, $time, $lang, $mybbgroups, $cache; 134 135 $uid = (int)$uid; 136 $query = $db->query(" 137 SELECT u.*, f.* 138 FROM ".TABLE_PREFIX."users u 139 LEFT JOIN ".TABLE_PREFIX."userfields f ON (f.ufid=u.uid) 140 WHERE u.uid='$uid' 141 LIMIT 1 142 "); 143 $mybb->user = $db->fetch_array($query); 144 145 // Check the password if we're not using a session 146 if(empty($loginkey) || $loginkey !== $mybb->user['loginkey'] || !$mybb->user['uid']) 147 { 148 unset($mybb->user); 149 $this->uid = 0; 150 return false; 151 } 152 $this->uid = $mybb->user['uid']; 153 154 // Set the logout key for this user 155 $mybb->user['logoutkey'] = md5($mybb->user['loginkey']); 156 157 // Sort out the private message count for this user. 158 if(($mybb->user['totalpms'] == -1 || $mybb->user['unreadpms'] == -1) && $mybb->settings['enablepms'] != 0) // Forced recount 159 { 160 $update = 0; 161 if($mybb->user['totalpms'] == -1) 162 { 163 $update += 1; 164 } 165 if($mybb->user['unreadpms'] == -1) 166 { 167 $update += 2; 168 } 169 170 require_once MYBB_ROOT."inc/functions_user.php"; 171 $pmcount = update_pm_count('', $update); 172 if(is_array($pmcount)) 173 { 174 $mybb->user = array_merge($mybb->user, $pmcount); 175 } 176 } 177 $mybb->user['pms_total'] = $mybb->user['totalpms']; 178 $mybb->user['pms_unread'] = $mybb->user['unreadpms']; 179 180 if($mybb->user['lastip'] != $this->packedip && array_key_exists('lastip', $mybb->user) && !defined('IN_UPGRADE')) 181 { 182 $lastip_add = ", lastip=".$db->escape_binary($this->packedip); 183 } 184 else 185 { 186 $lastip_add = ''; 187 } 188 189 // If the last visit was over 900 seconds (session time out) ago then update lastvisit. 190 $time = TIME_NOW; 191 if($time - $mybb->user['lastactive'] > 900) 192 { 193 $db->shutdown_query("UPDATE ".TABLE_PREFIX."users SET lastvisit='{$mybb->user['lastactive']}', lastactive='$time'{$lastip_add} WHERE uid='{$mybb->user['uid']}'"); 194 $mybb->user['lastvisit'] = $mybb->user['lastactive']; 195 require_once MYBB_ROOT."inc/functions_user.php"; 196 update_pm_count('', 2); 197 } 198 else 199 { 200 $timespent = TIME_NOW - $mybb->user['lastactive']; 201 $db->shutdown_query("UPDATE ".TABLE_PREFIX."users SET lastactive='$time', timeonline=timeonline+$timespent{$lastip_add} WHERE uid='{$mybb->user['uid']}'"); 202 } 203 204 // Sort out the language and forum preferences. 205 if($mybb->user['language'] && $lang->language_exists($mybb->user['language'])) 206 { 207 $mybb->settings['bblanguage'] = $mybb->user['language']; 208 } 209 if($mybb->user['dateformat'] != 0 && $mybb->user['dateformat'] != '') 210 { 211 global $date_formats; 212 if($date_formats[$mybb->user['dateformat']]) 213 { 214 $mybb->settings['dateformat'] = $date_formats[$mybb->user['dateformat']]; 215 } 216 } 217 218 // Choose time format. 219 if($mybb->user['timeformat'] != 0 && $mybb->user['timeformat'] != '') 220 { 221 global $time_formats; 222 if($time_formats[$mybb->user['timeformat']]) 223 { 224 $mybb->settings['timeformat'] = $time_formats[$mybb->user['timeformat']]; 225 } 226 } 227 228 // Find out the threads per page preference. 229 if($mybb->user['tpp']) 230 { 231 $mybb->settings['threadsperpage'] = $mybb->user['tpp']; 232 } 233 234 // Find out the posts per page preference. 235 if($mybb->user['ppp']) 236 { 237 $mybb->settings['postsperpage'] = $mybb->user['ppp']; 238 } 239 240 // Does this user prefer posts in classic mode? 241 if($mybb->user['classicpostbit']) 242 { 243 $mybb->settings['postlayout'] = 'classic'; 244 } 245 else 246 { 247 $mybb->settings['postlayout'] = 'horizontal'; 248 } 249 250 $usergroups = $cache->read('usergroups'); 251 252 if(!empty($usergroups[$mybb->user['usergroup']]) && $usergroups[$mybb->user['usergroup']]['isbannedgroup'] == 1) 253 { 254 $ban = $db->fetch_array( 255 $db->simple_select('banned', '*', 'uid='.(int)$mybb->user['uid'], array('limit' => 1)) 256 ); 257 258 if($ban) 259 { 260 $mybb->user['banned'] = 1; 261 $mybb->user['bandate'] = $ban['dateline']; 262 $mybb->user['banlifted'] = $ban['lifted']; 263 $mybb->user['banoldgroup'] = $ban['oldgroup']; 264 $mybb->user['banolddisplaygroup'] = $ban['olddisplaygroup']; 265 $mybb->user['banoldadditionalgroups'] = $ban['oldadditionalgroups']; 266 $mybb->user['banreason'] = $ban['reason']; 267 } 268 else 269 { 270 $mybb->user['banned'] = 0; 271 } 272 } 273 274 // Check if this user is currently banned and if we have to lift it. 275 if(!empty($mybb->user['bandate']) && (isset($mybb->user['banlifted']) && !empty($mybb->user['banlifted'])) && $mybb->user['banlifted'] < $time) // hmmm...bad user... how did you get banned =/ 276 { 277 // must have been good.. bans up :D 278 $db->shutdown_query("UPDATE ".TABLE_PREFIX."users SET usergroup='".(int)$mybb->user['banoldgroup']."', additionalgroups='".$db->escape_string($mybb->user['banoldadditionalgroups'])."', displaygroup='".(int)$mybb->user['banolddisplaygroup']."' WHERE uid='".$mybb->user['uid']."'"); 279 $db->shutdown_query("DELETE FROM ".TABLE_PREFIX."banned WHERE uid='".$mybb->user['uid']."'"); 280 // we better do this..otherwise they have dodgy permissions 281 $mybb->user['usergroup'] = $mybb->user['banoldgroup']; 282 $mybb->user['displaygroup'] = $mybb->user['banolddisplaygroup']; 283 $mybb->user['additionalgroups'] = $mybb->user['banoldadditionalgroups']; 284 285 $mybbgroups = $mybb->user['usergroup']; 286 if($mybb->user['additionalgroups']) 287 { 288 $mybbgroups .= ','.$mybb->user['additionalgroups']; 289 } 290 } 291 else if(!empty($mybb->user['bandate']) && (empty($mybb->user['banlifted']) || !empty($mybb->user['banlifted']) && $mybb->user['banlifted'] > $time)) 292 { 293 $mybbgroups = $mybb->user['usergroup']; 294 } 295 else 296 { 297 // Gather a full permission set for this user and the groups they are in. 298 $mybbgroups = $mybb->user['usergroup']; 299 if($mybb->user['additionalgroups']) 300 { 301 $mybbgroups .= ','.$mybb->user['additionalgroups']; 302 } 303 } 304 305 $mybb->usergroup = usergroup_permissions($mybbgroups); 306 if(!$mybb->user['displaygroup']) 307 { 308 $mybb->user['displaygroup'] = $mybb->user['usergroup']; 309 } 310 311 $mydisplaygroup = usergroup_displaygroup($mybb->user['displaygroup']); 312 if(is_array($mydisplaygroup)) 313 { 314 $mybb->usergroup = array_merge($mybb->usergroup, $mydisplaygroup); 315 } 316 317 if(!$mybb->user['usertitle']) 318 { 319 $mybb->user['usertitle'] = $mybb->usergroup['usertitle']; 320 } 321 322 // Update or create the session. 323 if(!defined("NO_ONLINE") && !defined('IN_UPGRADE')) 324 { 325 if(!empty($this->sid)) 326 { 327 $this->update_session($this->sid, $mybb->user['uid']); 328 } 329 else 330 { 331 $this->create_session($mybb->user['uid']); 332 } 333 } 334 return true; 335 } 336 337 /** 338 * Load a guest user. 339 * 340 */ 341 function load_guest() 342 { 343 global $mybb, $time, $db, $lang; 344 345 // Set up some defaults 346 $time = TIME_NOW; 347 $mybb->user['usergroup'] = 1; 348 $mybb->user['additionalgroups'] = ''; 349 $mybb->user['username'] = ''; 350 $mybb->user['uid'] = 0; 351 $mybbgroups = 1; 352 $mybb->user['displaygroup'] = 1; 353 $mybb->user['invisible'] = 0; 354 355 // Has this user visited before? Lastvisit need updating? 356 if(isset($mybb->cookies['mybb']['lastvisit'])) 357 { 358 if(!isset($mybb->cookies['mybb']['lastactive'])) 359 { 360 $mybb->user['lastactive'] = $time; 361 $mybb->cookies['mybb']['lastactive'] = $mybb->user['lastactive']; 362 } 363 else 364 { 365 $mybb->user['lastactive'] = (int)$mybb->cookies['mybb']['lastactive']; 366 } 367 if($time - $mybb->cookies['mybb']['lastactive'] > 900) 368 { 369 my_setcookie("mybb[lastvisit]", $mybb->user['lastactive']); 370 $mybb->user['lastvisit'] = $mybb->user['lastactive']; 371 } 372 else 373 { 374 $mybb->user['lastvisit'] = (int)$mybb->cookies['mybb']['lastactive']; 375 } 376 } 377 378 // No last visit cookie, create one. 379 else 380 { 381 my_setcookie("mybb[lastvisit]", $time); 382 $mybb->user['lastvisit'] = $time; 383 } 384 385 // Update last active cookie. 386 my_setcookie("mybb[lastactive]", $time); 387 388 // Gather a full permission set for this guest 389 $mybb->usergroup = usergroup_permissions($mybbgroups); 390 $mydisplaygroup = usergroup_displaygroup($mybb->user['displaygroup']); 391 if(is_array($mydisplaygroup)) 392 { 393 $mybb->usergroup = array_merge($mybb->usergroup, $mydisplaygroup); 394 } 395 396 // Update the online data. 397 if(!defined("NO_ONLINE") && !defined('IN_UPGRADE')) 398 { 399 if(!empty($this->sid)) 400 { 401 $this->update_session($this->sid); 402 } 403 else 404 { 405 $this->create_session(); 406 } 407 } 408 } 409 410 /** 411 * Load a search engine spider. 412 * 413 * @param int $spider_id The ID of the search engine spider 414 */ 415 function load_spider($spider_id) 416 { 417 global $mybb, $time, $db, $lang; 418 419 // Fetch the spider preferences from the database 420 $query = $db->simple_select("spiders", "*", "sid='{$spider_id}'"); 421 $spider = $db->fetch_array($query); 422 423 // Set up some defaults 424 $time = TIME_NOW; 425 $this->is_spider = true; 426 if($spider['usergroup']) 427 { 428 $mybb->user['usergroup'] = $spider['usergroup']; 429 } 430 else 431 { 432 $mybb->user['usergroup'] = 1; 433 } 434 $mybb->user['username'] = ''; 435 $mybb->user['uid'] = 0; 436 $mybb->user['displaygroup'] = $mybb->user['usergroup']; 437 $mybb->user['additionalgroups'] = ''; 438 $mybb->user['invisible'] = 0; 439 440 // Set spider language 441 if($spider['language'] && $lang->language_exists($spider['language'])) 442 { 443 $mybb->settings['bblanguage'] = $spider['language']; 444 } 445 446 // Set spider theme 447 if($spider['theme']) 448 { 449 $mybb->user['style'] = $spider['theme']; 450 } 451 452 // Gather a full permission set for this spider. 453 $mybb->usergroup = usergroup_permissions($mybb->user['usergroup']); 454 $mydisplaygroup = usergroup_displaygroup($mybb->user['displaygroup']); 455 if(is_array($mydisplaygroup)) 456 { 457 $mybb->usergroup = array_merge($mybb->usergroup, $mydisplaygroup); 458 } 459 460 // Update spider last minute (only do so on two minute intervals - decrease load for quick spiders) 461 if($spider['lastvisit'] < TIME_NOW-120) 462 { 463 $updated_spider = array( 464 "lastvisit" => TIME_NOW 465 ); 466 $db->update_query("spiders", $updated_spider, "sid='{$spider_id}'"); 467 } 468 469 // Update the online data. 470 if(!defined("NO_ONLINE") && !defined('IN_UPGRADE')) 471 { 472 $this->sid = "bot=".$spider_id; 473 $this->create_session(); 474 } 475 476 } 477 478 /** 479 * Update a user session. 480 * 481 * @param int $sid The session id. 482 * @param int $uid The user id. 483 */ 484 function update_session($sid, $uid=0) 485 { 486 global $db; 487 488 // Find out what the special locations are. 489 $speciallocs = $this->get_special_locations(); 490 if($uid) 491 { 492 $onlinedata['uid'] = $uid; 493 } 494 else 495 { 496 $onlinedata['uid'] = 0; 497 } 498 $onlinedata['time'] = TIME_NOW; 499 500 $onlinedata['location'] = $db->escape_string(substr(get_current_location(false, $this->ignore_parameters), 0, 150)); 501 $onlinedata['useragent'] = $db->escape_string(my_substr($this->useragent, 0, 200)); 502 503 $onlinedata['location1'] = (int)$speciallocs['1']; 504 $onlinedata['location2'] = (int)$speciallocs['2']; 505 $onlinedata['nopermission'] = 0; 506 $sid = $db->escape_string($sid); 507 508 $db->update_query("sessions", $onlinedata, "sid='{$sid}'"); 509 } 510 511 /** 512 * Create a new session. 513 * 514 * @param int $uid The user id to bind the session to. 515 */ 516 function create_session($uid=0) 517 { 518 global $db; 519 $speciallocs = $this->get_special_locations(); 520 521 // If there is a proper uid, delete by uid. 522 if($uid > 0) 523 { 524 $db->delete_query("sessions", "uid='{$uid}'"); 525 $onlinedata['uid'] = $uid; 526 } 527 else 528 { 529 // Is a spider - delete all other spider references 530 if($this->is_spider == true) 531 { 532 $db->delete_query("sessions", "sid='{$this->sid}'"); 533 } 534 535 $onlinedata['uid'] = 0; 536 } 537 538 // If the user is a search enginge spider, ... 539 if($this->is_spider == true) 540 { 541 $onlinedata['sid'] = $this->sid; 542 } 543 else 544 { 545 $onlinedata['sid'] = md5(random_str(50)); 546 } 547 $onlinedata['time'] = TIME_NOW; 548 $onlinedata['ip'] = $db->escape_binary($this->packedip); 549 550 $onlinedata['location'] = $db->escape_string(substr(get_current_location(false, $this->ignore_parameters), 0, 150)); 551 $onlinedata['useragent'] = $db->escape_string(my_substr($this->useragent, 0, 200)); 552 553 $onlinedata['location1'] = (int)$speciallocs['1']; 554 $onlinedata['location2'] = (int)$speciallocs['2']; 555 $onlinedata['nopermission'] = 0; 556 $db->replace_query("sessions", $onlinedata, "sid", false); 557 $this->sid = $onlinedata['sid']; 558 $this->uid = $onlinedata['uid']; 559 } 560 561 /** 562 * Find out the special locations. 563 * 564 * @return array Special locations array. 565 */ 566 function get_special_locations() 567 { 568 global $mybb; 569 $array = array('1' => '', '2' => ''); 570 if(preg_match("#forumdisplay.php#", $_SERVER['PHP_SELF']) && $mybb->get_input('fid', MyBB::INPUT_INT) > 0 && $mybb->get_input('fid', MyBB::INPUT_INT) < 4294967296) 571 { 572 $array[1] = $mybb->get_input('fid', MyBB::INPUT_INT); 573 $array[2] = ''; 574 } 575 elseif(preg_match("#showthread.php#", $_SERVER['PHP_SELF'])) 576 { 577 global $db; 578 579 if($mybb->get_input('tid', MyBB::INPUT_INT) > 0 && $mybb->get_input('tid', MyBB::INPUT_INT) < 4294967296) 580 { 581 $array[2] = $mybb->get_input('tid', MyBB::INPUT_INT); 582 } 583 584 // If there is no tid but a pid, trick the system into thinking there was a tid anyway. 585 elseif(isset($mybb->input['pid']) && !empty($mybb->input['pid'])) 586 { 587 $options = array( 588 "limit" => 1 589 ); 590 $query = $db->simple_select("posts", "tid", "pid=".$mybb->get_input('pid', MyBB::INPUT_INT), $options); 591 $post = $db->fetch_array($query); 592 $array[2] = $post['tid']; 593 } 594 595 $thread = get_thread($array[2]); 596 $array[1] = $thread['fid']; 597 } 598 return $array; 599 } 600} 601