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/phpbb/auth/ -> auth.php (source)

   1  <?php
   2  /**
   3  *
   4  * This file is part of the phpBB Forum Software package.
   5  *
   6  * @copyright (c) phpBB Limited <https://www.phpbb.com>
   7  * @license GNU General Public License, version 2 (GPL-2.0)
   8  *
   9  * For full copyright and license information, please see
  10  * the docs/CREDITS.txt file.
  11  *
  12  */
  13  
  14  namespace phpbb\auth;
  15  
  16  /**
  17  * Permission/Auth class
  18  */
  19  class auth
  20  {
  21      var $acl = array();
  22      var $cache = array();
  23      var $acl_options = array();
  24      var $acl_forum_ids = false;
  25  
  26      /**
  27      * Init permissions
  28      */
  29  	function acl(&$userdata)
  30      {
  31          global $db, $cache;
  32  
  33          $this->acl = $this->cache = $this->acl_options = array();
  34          $this->acl_forum_ids = false;
  35  
  36          if (($this->acl_options = $cache->get('_acl_options')) === false)
  37          {
  38              $sql = 'SELECT auth_option_id, auth_option, is_global, is_local
  39                  FROM ' . ACL_OPTIONS_TABLE . '
  40                  ORDER BY auth_option_id';
  41              $result = $db->sql_query($sql);
  42  
  43              $global = $local = 0;
  44              $this->acl_options = array();
  45              while ($row = $db->sql_fetchrow($result))
  46              {
  47                  if ($row['is_global'])
  48                  {
  49                      $this->acl_options['global'][$row['auth_option']] = $global++;
  50                  }
  51  
  52                  if ($row['is_local'])
  53                  {
  54                      $this->acl_options['local'][$row['auth_option']] = $local++;
  55                  }
  56  
  57                  $this->acl_options['id'][$row['auth_option']] = (int) $row['auth_option_id'];
  58                  $this->acl_options['option'][(int) $row['auth_option_id']] = $row['auth_option'];
  59              }
  60              $db->sql_freeresult($result);
  61  
  62              $cache->put('_acl_options', $this->acl_options);
  63          }
  64  
  65          if (!trim($userdata['user_permissions']))
  66          {
  67              $this->acl_cache($userdata);
  68          }
  69  
  70          // Fill ACL array
  71          $this->_fill_acl($userdata['user_permissions']);
  72  
  73          // Verify bitstring length with options provided...
  74          $renew = false;
  75          $global_length = count($this->acl_options['global']);
  76          $local_length = count($this->acl_options['local']);
  77  
  78          // Specify comparing length (bitstring is padded to 31 bits)
  79          $global_length = ($global_length % 31) ? ($global_length - ($global_length % 31) + 31) : $global_length;
  80          $local_length = ($local_length % 31) ? ($local_length - ($local_length % 31) + 31) : $local_length;
  81  
  82          // You thought we are finished now? Noooo... now compare them.
  83          foreach ($this->acl as $forum_id => $bitstring)
  84          {
  85              if (($forum_id && strlen($bitstring) != $local_length) || (!$forum_id && strlen($bitstring) != $global_length))
  86              {
  87                  $renew = true;
  88                  break;
  89              }
  90          }
  91  
  92          // If a bitstring within the list does not match the options, we have a user with incorrect permissions set and need to renew them
  93          if ($renew)
  94          {
  95              $this->acl_cache($userdata);
  96              $this->_fill_acl($userdata['user_permissions']);
  97          }
  98  
  99          return;
 100      }
 101  
 102      /**
 103      * Retrieves data wanted by acl function from the database for the
 104      * specified user.
 105      *
 106      * @param int $user_id User ID
 107      * @return array User attributes
 108      */
 109  	public function obtain_user_data($user_id)
 110      {
 111          global $db;
 112  
 113          $sql = 'SELECT user_id, username, user_permissions, user_type
 114              FROM ' . USERS_TABLE . '
 115              WHERE user_id = ' . $user_id;
 116          $result = $db->sql_query($sql);
 117          $user_data = $db->sql_fetchrow($result);
 118          $db->sql_freeresult($result);
 119          return $user_data;
 120      }
 121  
 122      /**
 123      * Fill ACL array with relevant bitstrings from user_permissions column
 124      * @access private
 125      */
 126  	function _fill_acl($user_permissions)
 127      {
 128          $seq_cache = array();
 129          $this->acl = array();
 130          $user_permissions = explode("\n", $user_permissions);
 131  
 132          foreach ($user_permissions as $f => $seq)
 133          {
 134              if ($seq)
 135              {
 136                  $i = 0;
 137  
 138                  if (!isset($this->acl[$f]))
 139                  {
 140                      $this->acl[$f] = '';
 141                  }
 142  
 143                  while ($subseq = substr($seq, $i, 6))
 144                  {
 145                      if (isset($seq_cache[$subseq]))
 146                      {
 147                          $converted = $seq_cache[$subseq];
 148                      }
 149                      else
 150                      {
 151                          $converted = $seq_cache[$subseq] = str_pad(base_convert($subseq, 36, 2), 31, 0, STR_PAD_LEFT);
 152                      }
 153  
 154                      // We put the original bitstring into the acl array
 155                      $this->acl[$f] .= $converted;
 156                      $i += 6;
 157                  }
 158              }
 159          }
 160      }
 161  
 162      /**
 163      * Look up an option
 164      * if the option is prefixed with !, then the result becomes negated
 165      *
 166      * If a forum id is specified the local option will be combined with a global option if one exist.
 167      * If a forum id is not specified, only the global option will be checked.
 168      */
 169  	function acl_get($opt, $f = 0)
 170      {
 171          $negate = false;
 172  
 173          if (strpos($opt, '!') === 0)
 174          {
 175              $negate = true;
 176              $opt = substr($opt, 1);
 177          }
 178  
 179          if (!isset($this->cache[$f][$opt]))
 180          {
 181              // We combine the global/local option with an OR because some options are global and local.
 182              // If the user has the global permission the local one is true too and vice versa
 183              $this->cache[$f][$opt] = false;
 184  
 185              // Is this option a global permission setting?
 186              if (isset($this->acl_options['global'][$opt]))
 187              {
 188                  if (isset($this->acl[0]))
 189                  {
 190                      $this->cache[$f][$opt] = $this->acl[0][$this->acl_options['global'][$opt]];
 191                  }
 192              }
 193  
 194              // Is this option a local permission setting?
 195              // But if we check for a global option only, we won't combine the options...
 196              if ($f != 0 && isset($this->acl_options['local'][$opt]))
 197              {
 198                  if (isset($this->acl[$f]) && isset($this->acl[$f][$this->acl_options['local'][$opt]]))
 199                  {
 200                      $this->cache[$f][$opt] |= $this->acl[$f][$this->acl_options['local'][$opt]];
 201                  }
 202              }
 203          }
 204  
 205          // Founder always has all global options set to true...
 206          return ($negate) ? !$this->cache[$f][$opt] : $this->cache[$f][$opt];
 207      }
 208  
 209      /**
 210      * Get forums with the specified permission setting
 211      *
 212      * @param string $opt The permission name to lookup. If prefixed with !, the result is negated.
 213      * @param bool    $clean set to true if only values needs to be returned which are set/unset
 214      *
 215      * @return array Contains the forum ids with the specified permission set to true.
 216                      This is a nested array: array => forum_id => permission => true
 217      */
 218  	function acl_getf($opt, $clean = false)
 219      {
 220          $acl_f = array();
 221          $negate = false;
 222  
 223          if (strpos($opt, '!') === 0)
 224          {
 225              $negate = true;
 226              $opt = substr($opt, 1);
 227          }
 228  
 229          // If we retrieve a list of forums not having permissions in, we need to get every forum_id
 230          if ($negate)
 231          {
 232              if ($this->acl_forum_ids === false)
 233              {
 234                  global $db;
 235  
 236                  $sql = 'SELECT forum_id
 237                      FROM ' . FORUMS_TABLE;
 238  
 239                  if (count($this->acl))
 240                  {
 241                      $sql .= ' WHERE ' . $db->sql_in_set('forum_id', array_keys($this->acl), true);
 242                  }
 243                  $result = $db->sql_query($sql);
 244  
 245                  $this->acl_forum_ids = array();
 246                  while ($row = $db->sql_fetchrow($result))
 247                  {
 248                      $this->acl_forum_ids[] = $row['forum_id'];
 249                  }
 250                  $db->sql_freeresult($result);
 251              }
 252          }
 253  
 254          if (isset($this->acl_options['local'][$opt]))
 255          {
 256              foreach ($this->acl as $f => $bitstring)
 257              {
 258                  // Skip global settings
 259                  if (!$f)
 260                  {
 261                      continue;
 262                  }
 263  
 264                  $allowed = (!isset($this->cache[$f][$opt])) ? $this->acl_get($opt, $f) : $this->cache[$f][$opt];
 265  
 266                  if (!$clean)
 267                  {
 268                      $acl_f[$f][$opt] = ($negate) ? !$allowed : $allowed;
 269                  }
 270                  else
 271                  {
 272                      if (($negate && !$allowed) || (!$negate && $allowed))
 273                      {
 274                          $acl_f[$f][$opt] = 1;
 275                      }
 276                  }
 277              }
 278          }
 279  
 280          // If we get forum_ids not having this permission, we need to fill the remaining parts
 281          if ($negate && count($this->acl_forum_ids))
 282          {
 283              foreach ($this->acl_forum_ids as $f)
 284              {
 285                  $acl_f[$f][$opt] = 1;
 286              }
 287          }
 288  
 289          return $acl_f;
 290      }
 291  
 292      /**
 293      * Get local permission state for any forum.
 294      *
 295      * Returns true if user has the permission in one or more forums, false if in no forum.
 296      * If global option is checked it returns the global state (same as acl_get($opt))
 297      * Local option has precedence...
 298      */
 299  	function acl_getf_global($opt)
 300      {
 301          if (is_array($opt))
 302          {
 303              // evaluates to true as soon as acl_getf_global is true for one option
 304              foreach ($opt as $check_option)
 305              {
 306                  if ($this->acl_getf_global($check_option))
 307                  {
 308                      return true;
 309                  }
 310              }
 311  
 312              return false;
 313          }
 314  
 315          if (isset($this->acl_options['local'][$opt]))
 316          {
 317              foreach ($this->acl as $f => $bitstring)
 318              {
 319                  // Skip global settings
 320                  if (!$f)
 321                  {
 322                      continue;
 323                  }
 324  
 325                  // as soon as the user has any permission we're done so return true
 326                  if ((!isset($this->cache[$f][$opt])) ? $this->acl_get($opt, $f) : $this->cache[$f][$opt])
 327                  {
 328                      return true;
 329                  }
 330              }
 331          }
 332          else if (isset($this->acl_options['global'][$opt]))
 333          {
 334              return $this->acl_get($opt);
 335          }
 336  
 337          return false;
 338      }
 339  
 340      /**
 341      * Get permission settings (more than one)
 342      */
 343  	function acl_gets()
 344      {
 345          $args = func_get_args();
 346          $f = array_pop($args);
 347  
 348          if (!is_numeric($f))
 349          {
 350              $args[] = $f;
 351              $f = 0;
 352          }
 353  
 354          // alternate syntax: acl_gets(array('m_', 'a_'), $forum_id)
 355          if (is_array($args[0]))
 356          {
 357              $args = $args[0];
 358          }
 359  
 360          $acl = 0;
 361          foreach ($args as $opt)
 362          {
 363              $acl |= $this->acl_get($opt, $f);
 364          }
 365  
 366          return $acl;
 367      }
 368  
 369      /**
 370      * Get permission listing based on user_id/options/forum_ids
 371      *
 372      * Be careful when using this function with permissions a_, m_, u_ and f_ !
 373      * It may not work correctly. When a user group grants an a_* permission,
 374      * e.g. a_foo, but the user's a_foo permission is set to "Never", then
 375      * the user does not in fact have the a_ permission.
 376      * But the user will still be listed as having the a_ permission.
 377      *
 378      * For more information see: http://tracker.phpbb.com/browse/PHPBB3-10252
 379      */
 380  	function acl_get_list($user_id = false, $opts = false, $forum_id = false)
 381      {
 382          if ($user_id !== false && !is_array($user_id) && $opts === false && $forum_id === false)
 383          {
 384              $hold_ary = array($user_id => $this->acl_raw_data_single_user($user_id));
 385          }
 386          else
 387          {
 388              $hold_ary = $this->acl_raw_data($user_id, $opts, $forum_id);
 389          }
 390  
 391          $auth_ary = array();
 392          foreach ($hold_ary as $user_id => $forum_ary)
 393          {
 394              foreach ($forum_ary as $forum_id => $auth_option_ary)
 395              {
 396                  foreach ($auth_option_ary as $auth_option => $auth_setting)
 397                  {
 398                      if ($auth_setting)
 399                      {
 400                          $auth_ary[$forum_id][$auth_option][] = $user_id;
 401                      }
 402                  }
 403              }
 404          }
 405  
 406          return $auth_ary;
 407      }
 408  
 409      /**
 410      * Cache data to user_permissions row
 411      */
 412  	function acl_cache(&$userdata)
 413      {
 414          global $db;
 415  
 416          // Empty user_permissions
 417          $userdata['user_permissions'] = '';
 418  
 419          $hold_ary = $this->acl_raw_data_single_user($userdata['user_id']);
 420  
 421          // Key 0 in $hold_ary are global options, all others are forum_ids
 422  
 423          // If this user is founder we're going to force fill the admin options ...
 424          if ($userdata['user_type'] == USER_FOUNDER)
 425          {
 426              foreach ($this->acl_options['global'] as $opt => $id)
 427              {
 428                  if (strpos($opt, 'a_') === 0)
 429                  {
 430                      $hold_ary[0][$this->acl_options['id'][$opt]] = ACL_YES;
 431                  }
 432              }
 433          }
 434  
 435          $hold_str = $this->build_bitstring($hold_ary);
 436  
 437          if ($hold_str)
 438          {
 439              $userdata['user_permissions'] = $hold_str;
 440  
 441              $sql = 'UPDATE ' . USERS_TABLE . "
 442                  SET user_permissions = '" . $db->sql_escape($userdata['user_permissions']) . "',
 443                      user_perm_from = 0
 444                  WHERE user_id = " . $userdata['user_id'];
 445              $db->sql_query($sql);
 446          }
 447  
 448          return;
 449      }
 450  
 451      /**
 452      * Build bitstring from permission set
 453      */
 454  	function build_bitstring(&$hold_ary)
 455      {
 456          $hold_str = '';
 457  
 458          if (count($hold_ary))
 459          {
 460              ksort($hold_ary);
 461  
 462              $last_f = 0;
 463  
 464              foreach ($hold_ary as $f => $auth_ary)
 465              {
 466                  $ary_key = (!$f) ? 'global' : 'local';
 467  
 468                  $bitstring = array();
 469                  foreach ($this->acl_options[$ary_key] as $opt => $id)
 470                  {
 471                      if (isset($auth_ary[$this->acl_options['id'][$opt]]))
 472                      {
 473                          $bitstring[$id] = $auth_ary[$this->acl_options['id'][$opt]];
 474  
 475                          $option_key = substr($opt, 0, strpos($opt, '_') + 1);
 476  
 477                          // If one option is allowed, the global permission for this option has to be allowed too
 478                          // example: if the user has the a_ permission this means he has one or more a_* permissions
 479                          if ($auth_ary[$this->acl_options['id'][$opt]] == ACL_YES && (!isset($bitstring[$this->acl_options[$ary_key][$option_key]]) || $bitstring[$this->acl_options[$ary_key][$option_key]] == ACL_NEVER))
 480                          {
 481                              $bitstring[$this->acl_options[$ary_key][$option_key]] = ACL_YES;
 482                          }
 483                      }
 484                      else
 485                      {
 486                          $bitstring[$id] = ACL_NEVER;
 487                      }
 488                  }
 489  
 490                  // Now this bitstring defines the permission setting for the current forum $f (or global setting)
 491                  $bitstring = implode('', $bitstring);
 492  
 493                  // The line number indicates the id, therefore we have to add empty lines for those ids not present
 494                  $hold_str .= str_repeat("\n", $f - $last_f);
 495  
 496                  // Convert bitstring for storage - we do not use binary/bytes because PHP's string functions are not fully binary safe
 497                  for ($i = 0, $bit_length = strlen($bitstring); $i < $bit_length; $i += 31)
 498                  {
 499                      $hold_str .= str_pad(base_convert(str_pad(substr($bitstring, $i, 31), 31, 0, STR_PAD_RIGHT), 2, 36), 6, 0, STR_PAD_LEFT);
 500                  }
 501  
 502                  $last_f = $f;
 503              }
 504              unset($bitstring);
 505  
 506              $hold_str = rtrim($hold_str);
 507          }
 508  
 509          return $hold_str;
 510      }
 511  
 512      /**
 513      * Clear one or all users cached permission settings
 514      */
 515  	function acl_clear_prefetch($user_id = false)
 516      {
 517          global $db, $cache, $phpbb_dispatcher;
 518  
 519          // Rebuild options cache
 520          $cache->destroy('_role_cache');
 521  
 522          $sql = 'SELECT *
 523              FROM ' . ACL_ROLES_DATA_TABLE . '
 524              ORDER BY role_id ASC';
 525          $result = $db->sql_query($sql);
 526  
 527          $this->role_cache = array();
 528          while ($row = $db->sql_fetchrow($result))
 529          {
 530              $this->role_cache[$row['role_id']][$row['auth_option_id']] = (int) $row['auth_setting'];
 531          }
 532          $db->sql_freeresult($result);
 533  
 534          foreach ($this->role_cache as $role_id => $role_options)
 535          {
 536              $this->role_cache[$role_id] = serialize($role_options);
 537          }
 538  
 539          $cache->put('_role_cache', $this->role_cache);
 540  
 541          // Now empty user permissions
 542          $where_sql = '';
 543  
 544          if ($user_id !== false)
 545          {
 546              $user_id = (!is_array($user_id)) ? $user_id = array((int) $user_id) : array_map('intval', $user_id);
 547              $where_sql = ' WHERE ' . $db->sql_in_set('user_id', $user_id);
 548          }
 549  
 550          $sql = 'UPDATE ' . USERS_TABLE . "
 551              SET user_permissions = '',
 552                  user_perm_from = 0
 553              $where_sql";
 554          $db->sql_query($sql);
 555  
 556          /**
 557          * Event is triggered after user(s) permission settings cache has been cleared
 558          *
 559          * @event core.acl_clear_prefetch_after
 560          * @var    mixed    user_id    User ID(s)
 561          * @since 3.1.11-RC1
 562          */
 563          $vars = array('user_id');
 564          extract($phpbb_dispatcher->trigger_event('core.acl_clear_prefetch_after', compact($vars)));
 565  
 566          return;
 567      }
 568  
 569      /**
 570      * Get assigned roles
 571      */
 572  	function acl_role_data($user_type, $role_type, $ug_id = false, $forum_id = false)
 573      {
 574          global $db;
 575  
 576          $roles = array();
 577  
 578          $sql_id = ($user_type == 'user') ? 'user_id' : 'group_id';
 579  
 580          $sql_ug = ($ug_id !== false) ? ((!is_array($ug_id)) ? "AND a.$sql_id = $ug_id" : 'AND ' . $db->sql_in_set("a.$sql_id", $ug_id)) : '';
 581          $sql_forum = ($forum_id !== false) ? ((!is_array($forum_id)) ? "AND a.forum_id = $forum_id" : 'AND ' . $db->sql_in_set('a.forum_id', $forum_id)) : '';
 582  
 583          // Grab assigned roles...
 584          $sql = 'SELECT a.auth_role_id, a.' . $sql_id . ', a.forum_id
 585              FROM ' . (($user_type == 'user') ? ACL_USERS_TABLE : ACL_GROUPS_TABLE) . ' a, ' . ACL_ROLES_TABLE . " r
 586              WHERE a.auth_role_id = r.role_id
 587                  AND r.role_type = '" . $db->sql_escape($role_type) . "'
 588                  $sql_ug
 589                  $sql_forum
 590              ORDER BY r.role_order ASC";
 591          $result = $db->sql_query($sql);
 592  
 593          while ($row = $db->sql_fetchrow($result))
 594          {
 595              $roles[$row[$sql_id]][$row['forum_id']] = $row['auth_role_id'];
 596          }
 597          $db->sql_freeresult($result);
 598  
 599          return $roles;
 600      }
 601  
 602      /**
 603      * Get raw acl data based on user/option/forum
 604      */
 605  	function acl_raw_data($user_id = false, $opts = false, $forum_id = false)
 606      {
 607          global $db;
 608  
 609          $sql_user = ($user_id !== false) ? ((!is_array($user_id)) ? 'user_id = ' . (int) $user_id : $db->sql_in_set('user_id', array_map('intval', $user_id))) : '';
 610          $sql_forum = ($forum_id !== false) ? ((!is_array($forum_id)) ? 'AND a.forum_id = ' . (int) $forum_id : 'AND ' . $db->sql_in_set('a.forum_id', array_map('intval', $forum_id))) : '';
 611  
 612          $sql_opts = $sql_opts_select = $sql_opts_from = '';
 613          $hold_ary = array();
 614  
 615          if ($opts !== false)
 616          {
 617              $sql_opts_select = ', ao.auth_option';
 618              $sql_opts_from = ', ' . ACL_OPTIONS_TABLE . ' ao';
 619              $this->build_auth_option_statement('ao.auth_option', $opts, $sql_opts);
 620          }
 621  
 622          $sql_ary = array();
 623  
 624          // Grab non-role settings - user-specific
 625          $sql_ary[] = 'SELECT a.user_id, a.forum_id, a.auth_setting, a.auth_option_id' . $sql_opts_select . '
 626              FROM ' . ACL_USERS_TABLE . ' a' . $sql_opts_from . '
 627              WHERE a.auth_role_id = 0 ' .
 628                  (($sql_opts_from) ? 'AND a.auth_option_id = ao.auth_option_id ' : '') .
 629                  (($sql_user) ? 'AND a.' . $sql_user : '') . "
 630                  $sql_forum
 631                  $sql_opts";
 632  
 633          // Now the role settings - user-specific
 634          $sql_ary[] = 'SELECT a.user_id, a.forum_id, r.auth_option_id, r.auth_setting, r.auth_option_id' . $sql_opts_select . '
 635              FROM ' . ACL_USERS_TABLE . ' a, ' . ACL_ROLES_DATA_TABLE . ' r' . $sql_opts_from . '
 636              WHERE a.auth_role_id = r.role_id ' .
 637                  (($sql_opts_from) ? 'AND r.auth_option_id = ao.auth_option_id ' : '') .
 638                  (($sql_user) ? 'AND a.' . $sql_user : '') . "
 639                  $sql_forum
 640                  $sql_opts";
 641  
 642          foreach ($sql_ary as $sql)
 643          {
 644              $result = $db->sql_query($sql);
 645  
 646              while ($row = $db->sql_fetchrow($result))
 647              {
 648                  $option = ($sql_opts_select) ? $row['auth_option'] : $this->acl_options['option'][$row['auth_option_id']];
 649                  $hold_ary[$row['user_id']][$row['forum_id']][$option] = $row['auth_setting'];
 650              }
 651              $db->sql_freeresult($result);
 652          }
 653  
 654          $sql_ary = array();
 655  
 656          // Now grab group settings - non-role specific...
 657          $sql_ary[] = 'SELECT ug.user_id, a.forum_id, a.auth_setting, a.auth_option_id' . $sql_opts_select . '
 658              FROM ' . ACL_GROUPS_TABLE . ' a, ' . USER_GROUP_TABLE . ' ug, ' . GROUPS_TABLE . ' g' . $sql_opts_from . '
 659              WHERE a.auth_role_id = 0 ' .
 660                  (($sql_opts_from) ? 'AND a.auth_option_id = ao.auth_option_id ' : '') . '
 661                  AND a.group_id = ug.group_id
 662                  AND g.group_id = ug.group_id
 663                  AND ug.user_pending = 0
 664                  AND NOT (ug.group_leader = 1 AND g.group_skip_auth = 1)
 665                  ' . (($sql_user) ? 'AND ug.' . $sql_user : '') . "
 666                  $sql_forum
 667                  $sql_opts";
 668  
 669          // Now grab group settings - role specific...
 670          $sql_ary[] = 'SELECT ug.user_id, a.forum_id, r.auth_setting, r.auth_option_id' . $sql_opts_select . '
 671              FROM ' . ACL_GROUPS_TABLE . ' a, ' . USER_GROUP_TABLE . ' ug, ' . GROUPS_TABLE . ' g, ' . ACL_ROLES_DATA_TABLE . ' r' . $sql_opts_from . '
 672              WHERE a.auth_role_id = r.role_id ' .
 673                  (($sql_opts_from) ? 'AND r.auth_option_id = ao.auth_option_id ' : '') . '
 674                  AND a.group_id = ug.group_id
 675                  AND g.group_id = ug.group_id
 676                  AND ug.user_pending = 0
 677                  AND NOT (ug.group_leader = 1 AND g.group_skip_auth = 1)
 678                  ' . (($sql_user) ? 'AND ug.' . $sql_user : '') . "
 679                  $sql_forum
 680                  $sql_opts";
 681  
 682          foreach ($sql_ary as $sql)
 683          {
 684              $result = $db->sql_query($sql);
 685  
 686              while ($row = $db->sql_fetchrow($result))
 687              {
 688                  $option = ($sql_opts_select) ? $row['auth_option'] : $this->acl_options['option'][$row['auth_option_id']];
 689  
 690                  if (!isset($hold_ary[$row['user_id']][$row['forum_id']][$option]) || (isset($hold_ary[$row['user_id']][$row['forum_id']][$option]) && $hold_ary[$row['user_id']][$row['forum_id']][$option] != ACL_NEVER))
 691                  {
 692                      $hold_ary[$row['user_id']][$row['forum_id']][$option] = $row['auth_setting'];
 693  
 694                      // If we detect ACL_NEVER, we will unset the flag option (within building the bitstring it is correctly set again)
 695                      if ($row['auth_setting'] == ACL_NEVER)
 696                      {
 697                          $flag = substr($option, 0, strpos($option, '_') + 1);
 698  
 699                          if (isset($hold_ary[$row['user_id']][$row['forum_id']][$flag]) && $hold_ary[$row['user_id']][$row['forum_id']][$flag] == ACL_YES)
 700                          {
 701                              unset($hold_ary[$row['user_id']][$row['forum_id']][$flag]);
 702  
 703  /*                            if (in_array(ACL_YES, $hold_ary[$row['user_id']][$row['forum_id']]))
 704                              {
 705                                  $hold_ary[$row['user_id']][$row['forum_id']][$flag] = ACL_YES;
 706                              }
 707  */
 708                          }
 709                      }
 710                  }
 711              }
 712              $db->sql_freeresult($result);
 713          }
 714  
 715          return $hold_ary;
 716      }
 717  
 718      /**
 719      * Get raw user based permission settings
 720      */
 721  	function acl_user_raw_data($user_id = false, $opts = false, $forum_id = false)
 722      {
 723          global $db;
 724  
 725          $sql_user = ($user_id !== false) ? ((!is_array($user_id)) ? 'user_id = ' . (int) $user_id : $db->sql_in_set('user_id', array_map('intval', $user_id))) : '';
 726          $sql_forum = ($forum_id !== false) ? ((!is_array($forum_id)) ? 'AND a.forum_id = ' . (int) $forum_id : 'AND ' . $db->sql_in_set('a.forum_id', array_map('intval', $forum_id))) : '';
 727  
 728          $sql_opts = '';
 729          $hold_ary = $sql_ary = array();
 730  
 731          if ($opts !== false)
 732          {
 733              $this->build_auth_option_statement('ao.auth_option', $opts, $sql_opts);
 734          }
 735  
 736          // Grab user settings - non-role specific...
 737          $sql_ary[] = 'SELECT a.user_id, a.forum_id, a.auth_setting, a.auth_option_id, ao.auth_option
 738              FROM ' . ACL_USERS_TABLE . ' a, ' . ACL_OPTIONS_TABLE . ' ao
 739              WHERE a.auth_role_id = 0
 740                  AND a.auth_option_id = ao.auth_option_id ' .
 741                  (($sql_user) ? 'AND a.' . $sql_user : '') . "
 742                  $sql_forum
 743                  $sql_opts
 744              ORDER BY a.forum_id, ao.auth_option";
 745  
 746          // Now the role settings - user-specific
 747          $sql_ary[] = 'SELECT a.user_id, a.forum_id, r.auth_option_id, r.auth_setting, r.auth_option_id, ao.auth_option
 748              FROM ' . ACL_USERS_TABLE . ' a, ' . ACL_ROLES_DATA_TABLE . ' r, ' . ACL_OPTIONS_TABLE . ' ao
 749              WHERE a.auth_role_id = r.role_id
 750                  AND r.auth_option_id = ao.auth_option_id ' .
 751                  (($sql_user) ? 'AND a.' . $sql_user : '') . "
 752                  $sql_forum
 753                  $sql_opts
 754              ORDER BY a.forum_id, ao.auth_option";
 755  
 756          foreach ($sql_ary as $sql)
 757          {
 758              $result = $db->sql_query($sql);
 759  
 760              while ($row = $db->sql_fetchrow($result))
 761              {
 762                  $hold_ary[$row['user_id']][$row['forum_id']][$row['auth_option']] = $row['auth_setting'];
 763              }
 764              $db->sql_freeresult($result);
 765          }
 766  
 767          return $hold_ary;
 768      }
 769  
 770      /**
 771      * Get raw group based permission settings
 772      */
 773  	function acl_group_raw_data($group_id = false, $opts = false, $forum_id = false)
 774      {
 775          global $db;
 776  
 777          $sql_group = ($group_id !== false) ? ((!is_array($group_id)) ? 'group_id = ' . (int) $group_id : $db->sql_in_set('group_id', array_map('intval', $group_id))) : '';
 778          $sql_forum = ($forum_id !== false) ? ((!is_array($forum_id)) ? 'AND a.forum_id = ' . (int) $forum_id : 'AND ' . $db->sql_in_set('a.forum_id', array_map('intval', $forum_id))) : '';
 779  
 780          $sql_opts = '';
 781          $hold_ary = $sql_ary = array();
 782  
 783          if ($opts !== false)
 784          {
 785              $this->build_auth_option_statement('ao.auth_option', $opts, $sql_opts);
 786          }
 787  
 788          // Grab group settings - non-role specific...
 789          $sql_ary[] = 'SELECT a.group_id, a.forum_id, a.auth_setting, a.auth_option_id, ao.auth_option
 790              FROM ' . ACL_GROUPS_TABLE . ' a, ' . ACL_OPTIONS_TABLE . ' ao
 791              WHERE a.auth_role_id = 0
 792                  AND a.auth_option_id = ao.auth_option_id ' .
 793                  (($sql_group) ? 'AND a.' . $sql_group : '') . "
 794                  $sql_forum
 795                  $sql_opts
 796              ORDER BY a.forum_id, ao.auth_option";
 797  
 798          // Now grab group settings - role specific...
 799          $sql_ary[] = 'SELECT a.group_id, a.forum_id, r.auth_setting, r.auth_option_id, ao.auth_option
 800              FROM ' . ACL_GROUPS_TABLE . ' a, ' . ACL_ROLES_DATA_TABLE . ' r, ' . ACL_OPTIONS_TABLE . ' ao
 801              WHERE a.auth_role_id = r.role_id
 802                  AND r.auth_option_id = ao.auth_option_id ' .
 803                  (($sql_group) ? 'AND a.' . $sql_group : '') . "
 804                  $sql_forum
 805                  $sql_opts
 806              ORDER BY a.forum_id, ao.auth_option";
 807  
 808          foreach ($sql_ary as $sql)
 809          {
 810              $result = $db->sql_query($sql);
 811  
 812              while ($row = $db->sql_fetchrow($result))
 813              {
 814                  $hold_ary[$row['group_id']][$row['forum_id']][$row['auth_option']] = $row['auth_setting'];
 815              }
 816              $db->sql_freeresult($result);
 817          }
 818  
 819          return $hold_ary;
 820      }
 821  
 822      /**
 823      * Get raw acl data based on user for caching user_permissions
 824      * This function returns the same data as acl_raw_data(), but without the user id as the first key within the array.
 825      */
 826  	function acl_raw_data_single_user($user_id)
 827      {
 828          global $db, $cache;
 829  
 830          // Check if the role-cache is there
 831          if (($this->role_cache = $cache->get('_role_cache')) === false)
 832          {
 833              $this->role_cache = array();
 834  
 835              // We pre-fetch roles
 836              $sql = 'SELECT *
 837                  FROM ' . ACL_ROLES_DATA_TABLE . '
 838                  ORDER BY role_id ASC';
 839              $result = $db->sql_query($sql);
 840  
 841              while ($row = $db->sql_fetchrow($result))
 842              {
 843                  $this->role_cache[$row['role_id']][$row['auth_option_id']] = (int) $row['auth_setting'];
 844              }
 845              $db->sql_freeresult($result);
 846  
 847              foreach ($this->role_cache as $role_id => $role_options)
 848              {
 849                  $this->role_cache[$role_id] = serialize($role_options);
 850              }
 851  
 852              $cache->put('_role_cache', $this->role_cache);
 853          }
 854  
 855          $hold_ary = array();
 856  
 857          // Grab user-specific permission settings
 858          $sql = 'SELECT forum_id, auth_option_id, auth_role_id, auth_setting
 859              FROM ' . ACL_USERS_TABLE . '
 860              WHERE user_id = ' . $user_id;
 861          $result = $db->sql_query($sql);
 862  
 863          while ($row = $db->sql_fetchrow($result))
 864          {
 865              // If a role is assigned, assign all options included within this role. Else, only set this one option.
 866              if ($row['auth_role_id'])
 867              {
 868                  $hold_ary[$row['forum_id']] = (empty($hold_ary[$row['forum_id']])) ? unserialize($this->role_cache[$row['auth_role_id']]) : $hold_ary[$row['forum_id']] + unserialize($this->role_cache[$row['auth_role_id']]);
 869              }
 870              else
 871              {
 872                  $hold_ary[$row['forum_id']][$row['auth_option_id']] = $row['auth_setting'];
 873              }
 874          }
 875          $db->sql_freeresult($result);
 876  
 877          // Now grab group-specific permission settings
 878          $sql = 'SELECT a.forum_id, a.auth_option_id, a.auth_role_id, a.auth_setting
 879              FROM ' . ACL_GROUPS_TABLE . ' a, ' . USER_GROUP_TABLE . ' ug, ' . GROUPS_TABLE . ' g
 880              WHERE a.group_id = ug.group_id
 881                  AND g.group_id = ug.group_id
 882                  AND ug.user_pending = 0
 883                  AND NOT (ug.group_leader = 1 AND g.group_skip_auth = 1)
 884                  AND ug.user_id = ' . $user_id;
 885          $result = $db->sql_query($sql);
 886  
 887          while ($row = $db->sql_fetchrow($result))
 888          {
 889              if (!$row['auth_role_id'])
 890              {
 891                  $this->_set_group_hold_ary($hold_ary[$row['forum_id']], $row['auth_option_id'], $row['auth_setting']);
 892              }
 893              else if (!empty($this->role_cache[$row['auth_role_id']]))
 894              {
 895                  foreach (unserialize($this->role_cache[$row['auth_role_id']]) as $option_id => $setting)
 896                  {
 897                      $this->_set_group_hold_ary($hold_ary[$row['forum_id']], $option_id, $setting);
 898                  }
 899              }
 900          }
 901          $db->sql_freeresult($result);
 902  
 903          return $hold_ary;
 904      }
 905  
 906      /**
 907      * Private function snippet for setting a specific piece of the hold_ary
 908      */
 909  	function _set_group_hold_ary(&$hold_ary, $option_id, $setting)
 910      {
 911          if (!isset($hold_ary[$option_id]) || (isset($hold_ary[$option_id]) && $hold_ary[$option_id] != ACL_NEVER))
 912          {
 913              $hold_ary[$option_id] = $setting;
 914  
 915              // If we detect ACL_NEVER, we will unset the flag option (within building the bitstring it is correctly set again)
 916              if ($setting == ACL_NEVER)
 917              {
 918                  $flag = substr($this->acl_options['option'][$option_id], 0, strpos($this->acl_options['option'][$option_id], '_') + 1);
 919                  $flag = (int) $this->acl_options['id'][$flag];
 920  
 921                  if (isset($hold_ary[$flag]) && $hold_ary[$flag] == ACL_YES)
 922                  {
 923                      unset($hold_ary[$flag]);
 924  
 925  /*                    This is uncommented, because i suspect this being slightly wrong due to mixed permission classes being possible
 926                      if (in_array(ACL_YES, $hold_ary))
 927                      {
 928                          $hold_ary[$flag] = ACL_YES;
 929                      }*/
 930                  }
 931              }
 932          }
 933      }
 934  
 935      /**
 936      * Authentication plug-ins is largely down to Sergey Kanareykin, our thanks to him.
 937      */
 938  	function login($username, $password, $autologin = false, $viewonline = 1, $admin = 0)
 939      {
 940          global $db, $user, $phpbb_root_path, $phpEx, $phpbb_container;
 941          global $phpbb_dispatcher;
 942  
 943          /* @var $provider_collection \phpbb\auth\provider_collection */
 944          $provider_collection = $phpbb_container->get('auth.provider_collection');
 945  
 946          $provider = $provider_collection->get_provider();
 947          if ($provider)
 948          {
 949              $login = $provider->login($username, $password);
 950  
 951              // If the auth module wants us to create an empty profile do so and then treat the status as LOGIN_SUCCESS
 952              if ($login['status'] == LOGIN_SUCCESS_CREATE_PROFILE)
 953              {
 954                  // we are going to use the user_add function so include functions_user.php if it wasn't defined yet
 955                  if (!function_exists('user_add'))
 956                  {
 957                      include($phpbb_root_path . 'includes/functions_user.' . $phpEx);
 958                  }
 959  
 960                  user_add($login['user_row'], (isset($login['cp_data'])) ? $login['cp_data'] : false);
 961  
 962                  $sql = 'SELECT user_id, username, user_password, user_passchg, user_email, user_type
 963                      FROM ' . USERS_TABLE . "
 964                      WHERE username_clean = '" . $db->sql_escape(utf8_clean_string($username)) . "'";
 965                  $result = $db->sql_query($sql);
 966                  $row = $db->sql_fetchrow($result);
 967                  $db->sql_freeresult($result);
 968  
 969                  if (!$row)
 970                  {
 971                      return array(
 972                          'status'        => LOGIN_ERROR_EXTERNAL_AUTH,
 973                          'error_msg'        => 'AUTH_NO_PROFILE_CREATED',
 974                          'user_row'        => array('user_id' => ANONYMOUS),
 975                      );
 976                  }
 977  
 978                  $login = array(
 979                      'status'    => LOGIN_SUCCESS,
 980                      'error_msg'    => false,
 981                      'user_row'    => $row,
 982                  );
 983              }
 984  
 985              // If the auth provider wants us to link an empty account do so and redirect
 986              if ($login['status'] == LOGIN_SUCCESS_LINK_PROFILE)
 987              {
 988                  // If this status exists a fourth field is in the $login array called 'redirect_data'
 989                  // This data is passed along as GET data to the next page allow the account to be linked
 990  
 991                  $params = array('mode' => 'login_link');
 992                  $url = append_sid($phpbb_root_path . 'ucp.' . $phpEx, array_merge($params, $login['redirect_data']));
 993  
 994                  redirect($url);
 995              }
 996  
 997              /**
 998               * Event is triggered after checking for valid username and password, and before the actual session creation.
 999               *
1000               * @event core.auth_login_session_create_before
1001               * @var    array    login                Variable containing login array
1002               * @var    bool    admin                Boolean variable whether user is logging into the ACP
1003               * @var    string    username            Username of user to log in
1004               * @var    bool    autologin            Boolean variable signaling whether login is triggered via auto login
1005               * @since 3.1.7-RC1
1006               */
1007              $vars = array(
1008                  'login',
1009                  'admin',
1010                  'username',
1011                  'autologin',
1012              );
1013              extract($phpbb_dispatcher->trigger_event('core.auth_login_session_create_before', compact($vars)));
1014  
1015              // If login succeeded, we will log the user in... else we pass the login array through...
1016              if ($login['status'] == LOGIN_SUCCESS)
1017              {
1018                  $old_session_id = $user->session_id;
1019  
1020                  if ($admin)
1021                  {
1022                      global $SID, $_SID;
1023  
1024                      $cookie_expire = time() - 31536000;
1025                      $user->set_cookie('u', '', $cookie_expire);
1026                      $user->set_cookie('sid', '', $cookie_expire);
1027                      unset($cookie_expire);
1028  
1029                      $SID = '?sid=';
1030                      $user->session_id = $_SID = '';
1031                  }
1032  
1033                  $result = $user->session_create($login['user_row']['user_id'], $admin, $autologin, $viewonline);
1034  
1035                  // Successful session creation
1036                  if ($result === true)
1037                  {
1038                      // If admin re-authentication we remove the old session entry because a new one has been created...
1039                      if ($admin)
1040                      {
1041                          // the login array is used because the user ids do not differ for re-authentication
1042                          $sql = 'DELETE FROM ' . SESSIONS_TABLE . "
1043                              WHERE session_id = '" . $db->sql_escape($old_session_id) . "'
1044                              AND session_user_id = {$login['user_row']['user_id']}";
1045                          $db->sql_query($sql);
1046                      }
1047  
1048                      return array(
1049                          'status'        => LOGIN_SUCCESS,
1050                          'error_msg'        => false,
1051                          'user_row'        => $login['user_row'],
1052                      );
1053                  }
1054  
1055                  return array(
1056                      'status'        => LOGIN_BREAK,
1057                      'error_msg'        => $result,
1058                      'user_row'        => $login['user_row'],
1059                  );
1060              }
1061  
1062              return $login;
1063          }
1064  
1065          trigger_error('Authentication method not found', E_USER_ERROR);
1066      }
1067  
1068      /**
1069      * Fill auth_option statement for later querying based on the supplied options
1070      */
1071  	function build_auth_option_statement($key, $auth_options, &$sql_opts)
1072      {
1073          global $db;
1074  
1075          if (!is_array($auth_options))
1076          {
1077              if (strpos($auth_options, '%') !== false)
1078              {
1079                  $sql_opts = "AND $key " . $db->sql_like_expression(str_replace('%', $db->get_any_char(), $auth_options));
1080              }
1081              else
1082              {
1083                  $sql_opts = "AND $key = '" . $db->sql_escape($auth_options) . "'";
1084              }
1085          }
1086          else
1087          {
1088              $is_like_expression = false;
1089  
1090              foreach ($auth_options as $option)
1091              {
1092                  if (strpos($option, '%') !== false)
1093                  {
1094                      $is_like_expression = true;
1095                  }
1096              }
1097  
1098              if (!$is_like_expression)
1099              {
1100                  $sql_opts = 'AND ' . $db->sql_in_set($key, $auth_options);
1101              }
1102              else
1103              {
1104                  $sql = array();
1105  
1106                  foreach ($auth_options as $option)
1107                  {
1108                      if (strpos($option, '%') !== false)
1109                      {
1110                          $sql[] = $key . ' ' . $db->sql_like_expression(str_replace('%', $db->get_any_char(), $option));
1111                      }
1112                      else
1113                      {
1114                          $sql[] = $key . " = '" . $db->sql_escape($option) . "'";
1115                      }
1116                  }
1117  
1118                  $sql_opts = 'AND (' . implode(' OR ', $sql) . ')';
1119              }
1120          }
1121      }
1122  }


Generated: Sat Oct 26 11:28:42 2019 Cross-referenced by PHPXref 0.7.1