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   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  /**
  15  * @ignore
  16  */
  17  if (!defined('IN_PHPBB'))
  18  {
  19      exit;
  20  }
  21  
  22  /**
  23  * gen_sort_selects()
  24  * make_jumpbox()
  25  * bump_topic_allowed()
  26  * get_context()
  27  * phpbb_clean_search_string()
  28  * decode_message()
  29  * strip_bbcode()
  30  * generate_text_for_display()
  31  * generate_text_for_storage()
  32  * generate_text_for_edit()
  33  * make_clickable_callback()
  34  * make_clickable()
  35  * censor_text()
  36  * bbcode_nl2br()
  37  * smiley_text()
  38  * parse_attachments()
  39  * extension_allowed()
  40  * truncate_string()
  41  * get_username_string()
  42  * class bitfield
  43  */
  44  
  45  /**
  46  * Generate sort selection fields
  47  */
  48  function gen_sort_selects(&$limit_days, &$sort_by_text, &$sort_days, &$sort_key, &$sort_dir, &$s_limit_days, &$s_sort_key, &$s_sort_dir, &$u_sort_param, $def_st = false, $def_sk = false, $def_sd = false)
  49  {
  50      global $user, $phpbb_dispatcher;
  51  
  52      $sort_dir_text = array('a' => $user->lang['ASCENDING'], 'd' => $user->lang['DESCENDING']);
  53  
  54      $sorts = array(
  55          'st'    => array(
  56              'key'        => 'sort_days',
  57              'default'    => $def_st,
  58              'options'    => $limit_days,
  59              'output'    => &$s_limit_days,
  60          ),
  61  
  62          'sk'    => array(
  63              'key'        => 'sort_key',
  64              'default'    => $def_sk,
  65              'options'    => $sort_by_text,
  66              'output'    => &$s_sort_key,
  67          ),
  68  
  69          'sd'    => array(
  70              'key'        => 'sort_dir',
  71              'default'    => $def_sd,
  72              'options'    => $sort_dir_text,
  73              'output'    => &$s_sort_dir,
  74          ),
  75      );
  76      $u_sort_param  = '';
  77  
  78      foreach ($sorts as $name => $sort_ary)
  79      {
  80          $key = $sort_ary['key'];
  81          $selected = ${$sort_ary['key']};
  82  
  83          // Check if the key is selectable. If not, we reset to the default or first key found.
  84          // This ensures the values are always valid. We also set $sort_dir/sort_key/etc. to the
  85          // correct value, else the protection is void. ;)
  86          if (!isset($sort_ary['options'][$selected]))
  87          {
  88              if ($sort_ary['default'] !== false)
  89              {
  90                  $selected = ${$key} = $sort_ary['default'];
  91              }
  92              else
  93              {
  94                  @reset($sort_ary['options']);
  95                  $selected = ${$key} = key($sort_ary['options']);
  96              }
  97          }
  98  
  99          $sort_ary['output'] = '<select name="' . $name . '" id="' . $name . '">';
 100          foreach ($sort_ary['options'] as $option => $text)
 101          {
 102              $sort_ary['output'] .= '<option value="' . $option . '"' . (($selected == $option) ? ' selected="selected"' : '') . '>' . $text . '</option>';
 103          }
 104          $sort_ary['output'] .= '</select>';
 105  
 106          $u_sort_param .= ($selected !== $sort_ary['default']) ? ((strlen($u_sort_param)) ? '&amp;' : '') . "{$name}={$selected}" : '';
 107      }
 108  
 109      /**
 110       * Run code before generated sort selects are returned
 111       *
 112       * @event core.gen_sort_selects_after
 113       * @var    int      limit_days     Days limit
 114       * @var    array    sort_by_text   Sort by text options
 115       * @var    int      sort_days      Sort by days flag
 116       * @var    string   sort_key       Sort key
 117       * @var    string   sort_dir       Sort dir
 118       * @var    string   s_limit_days   String of days limit
 119       * @var    string   s_sort_key     String of sort key
 120       * @var    string   s_sort_dir     String of sort dir
 121       * @var    string   u_sort_param   Sort URL params
 122       * @var    bool     def_st         Default sort days
 123       * @var    bool     def_sk         Default sort key
 124       * @var    bool     def_sd         Default sort dir
 125       * @var    array    sorts          Sorts
 126       * @since 3.1.9-RC1
 127       */
 128      $vars = array(
 129          'limit_days',
 130          'sort_by_text',
 131          'sort_days',
 132          'sort_key',
 133          'sort_dir',
 134          's_limit_days',
 135          's_sort_key',
 136          's_sort_dir',
 137          'u_sort_param',
 138          'def_st',
 139          'def_sk',
 140          'def_sd',
 141          'sorts',
 142      );
 143      extract($phpbb_dispatcher->trigger_event('core.gen_sort_selects_after', compact($vars)));
 144  
 145      return;
 146  }
 147  
 148  /**
 149  * Generate Jumpbox
 150  */
 151  function make_jumpbox($action, $forum_id = false, $select_all = false, $acl_list = false, $force_display = false)
 152  {
 153      global $config, $auth, $template, $user, $db, $phpbb_path_helper, $phpbb_dispatcher;
 154  
 155      // We only return if the jumpbox is not forced to be displayed (in case it is needed for functionality)
 156      if (!$config['load_jumpbox'] && $force_display === false)
 157      {
 158          return;
 159      }
 160  
 161      $sql = 'SELECT forum_id, forum_name, parent_id, forum_type, left_id, right_id
 162          FROM ' . FORUMS_TABLE . '
 163          ORDER BY left_id ASC';
 164      $result = $db->sql_query($sql, 600);
 165  
 166      $rowset = array();
 167      while ($row = $db->sql_fetchrow($result))
 168      {
 169          $rowset[(int) $row['forum_id']] = $row;
 170      }
 171      $db->sql_freeresult($result);
 172  
 173      $right = $padding = 0;
 174      $padding_store = array('0' => 0);
 175      $display_jumpbox = false;
 176      $iteration = 0;
 177  
 178      /**
 179      * Modify the jumpbox forum list data
 180      *
 181      * @event core.make_jumpbox_modify_forum_list
 182      * @var    array    rowset    Array with the forums list data
 183      * @since 3.1.10-RC1
 184      */
 185      $vars = array('rowset');
 186      extract($phpbb_dispatcher->trigger_event('core.make_jumpbox_modify_forum_list', compact($vars)));
 187  
 188      // Sometimes it could happen that forums will be displayed here not be displayed within the index page
 189      // This is the result of forums not displayed at index, having list permissions and a parent of a forum with no permissions.
 190      // If this happens, the padding could be "broken"
 191  
 192      foreach ($rowset as $row)
 193      {
 194          if ($row['left_id'] < $right)
 195          {
 196              $padding++;
 197              $padding_store[$row['parent_id']] = $padding;
 198          }
 199          else if ($row['left_id'] > $right + 1)
 200          {
 201              // Ok, if the $padding_store for this parent is empty there is something wrong. For now we will skip over it.
 202              // @todo digging deep to find out "how" this can happen.
 203              $padding = (isset($padding_store[$row['parent_id']])) ? $padding_store[$row['parent_id']] : $padding;
 204          }
 205  
 206          $right = $row['right_id'];
 207  
 208          if ($row['forum_type'] == FORUM_CAT && ($row['left_id'] + 1 == $row['right_id']))
 209          {
 210              // Non-postable forum with no subforums, don't display
 211              continue;
 212          }
 213  
 214          if (!$auth->acl_get('f_list', $row['forum_id']))
 215          {
 216              // if the user does not have permissions to list this forum skip
 217              continue;
 218          }
 219  
 220          if ($acl_list && !$auth->acl_gets($acl_list, $row['forum_id']))
 221          {
 222              continue;
 223          }
 224  
 225          $tpl_ary = array();
 226          if (!$display_jumpbox)
 227          {
 228              $tpl_ary[] = array(
 229                  'FORUM_ID'        => ($select_all) ? 0 : -1,
 230                  'FORUM_NAME'    => ($select_all) ? $user->lang['ALL_FORUMS'] : $user->lang['SELECT_FORUM'],
 231                  'S_FORUM_COUNT'    => $iteration,
 232                  'LINK'            => $phpbb_path_helper->append_url_params($action, array('f' => $forum_id)),
 233              );
 234  
 235              $iteration++;
 236              $display_jumpbox = true;
 237          }
 238  
 239          $tpl_ary[] = array(
 240              'FORUM_ID'        => $row['forum_id'],
 241              'FORUM_NAME'    => $row['forum_name'],
 242              'SELECTED'        => ($row['forum_id'] == $forum_id) ? ' selected="selected"' : '',
 243              'S_FORUM_COUNT'    => $iteration,
 244              'S_IS_CAT'        => ($row['forum_type'] == FORUM_CAT) ? true : false,
 245              'S_IS_LINK'        => ($row['forum_type'] == FORUM_LINK) ? true : false,
 246              'S_IS_POST'        => ($row['forum_type'] == FORUM_POST) ? true : false,
 247              'LINK'            => $phpbb_path_helper->append_url_params($action, array('f' => $row['forum_id'])),
 248          );
 249  
 250          /**
 251           * Modify the jumpbox before it is assigned to the template
 252           *
 253           * @event core.make_jumpbox_modify_tpl_ary
 254           * @var    array    row                The data of the forum
 255           * @var    array    tpl_ary            Template data of the forum
 256           * @since 3.1.10-RC1
 257           */
 258          $vars = array(
 259              'row',
 260              'tpl_ary',
 261          );
 262          extract($phpbb_dispatcher->trigger_event('core.make_jumpbox_modify_tpl_ary', compact($vars)));
 263  
 264          $template->assign_block_vars_array('jumpbox_forums', $tpl_ary);
 265  
 266          unset($tpl_ary);
 267  
 268          for ($i = 0; $i < $padding; $i++)
 269          {
 270              $template->assign_block_vars('jumpbox_forums.level', array());
 271          }
 272          $iteration++;
 273      }
 274      unset($padding_store, $rowset);
 275  
 276      $url_parts = $phpbb_path_helper->get_url_parts($action);
 277  
 278      $template->assign_vars(array(
 279          'S_DISPLAY_JUMPBOX'            => $display_jumpbox,
 280          'S_JUMPBOX_ACTION'            => $action,
 281          'HIDDEN_FIELDS_FOR_JUMPBOX'    => build_hidden_fields($url_parts['params']),
 282      ));
 283  
 284      return;
 285  }
 286  
 287  /**
 288  * Bump Topic Check - used by posting and viewtopic
 289  */
 290  function bump_topic_allowed($forum_id, $topic_bumped, $last_post_time, $topic_poster, $last_topic_poster)
 291  {
 292      global $config, $auth, $user;
 293  
 294      // Check permission and make sure the last post was not already bumped
 295      if (!$auth->acl_get('f_bump', $forum_id) || $topic_bumped)
 296      {
 297          return false;
 298      }
 299  
 300      // Check bump time range, is the user really allowed to bump the topic at this time?
 301      $bump_time = ($config['bump_type'] == 'm') ? $config['bump_interval'] * 60 : (($config['bump_type'] == 'h') ? $config['bump_interval'] * 3600 : $config['bump_interval'] * 86400);
 302  
 303      // Check bump time
 304      if ($last_post_time + $bump_time > time())
 305      {
 306          return false;
 307      }
 308  
 309      // Check bumper, only topic poster and last poster are allowed to bump
 310      if ($topic_poster != $user->data['user_id'] && $last_topic_poster != $user->data['user_id'])
 311      {
 312          return false;
 313      }
 314  
 315      // A bump time of 0 will completely disable the bump feature... not intended but might be useful.
 316      return $bump_time;
 317  }
 318  
 319  /**
 320  * Generates a text with approx. the specified length which contains the specified words and their context
 321  *
 322  * @param    string    $text    The full text from which context shall be extracted
 323  * @param    string    $words    An array of words which should be contained in the result, has to be a valid part of a PCRE pattern (escape with preg_quote!)
 324  * @param    int        $length    The desired length of the resulting text, however the result might be shorter or longer than this value
 325  *
 326  * @return    string            Context of the specified words separated by "..."
 327  */
 328  function get_context($text, $words, $length = 400)
 329  {
 330      // first replace all whitespaces with single spaces
 331      $text = preg_replace('/ +/', ' ', strtr($text, "\t\n\r\x0C ", '     '));
 332  
 333      // we need to turn the entities back into their original form, to not cut the message in between them
 334      $entities = array('&lt;', '&gt;', '&#91;', '&#93;', '&#46;', '&#58;', '&#058;');
 335      $characters = array('<', '>', '[', ']', '.', ':', ':');
 336      $text = str_replace($entities, $characters, $text);
 337  
 338      $word_indizes = array();
 339      if (sizeof($words))
 340      {
 341          $match = '';
 342          // find the starting indizes of all words
 343          foreach ($words as $word)
 344          {
 345              if ($word)
 346              {
 347                  if (preg_match('#(?:[^\w]|^)(' . $word . ')(?:[^\w]|$)#i', $text, $match))
 348                  {
 349                      if (empty($match[1]))
 350                      {
 351                          continue;
 352                      }
 353  
 354                      $pos = utf8_strpos($text, $match[1]);
 355                      if ($pos !== false)
 356                      {
 357                          $word_indizes[] = $pos;
 358                      }
 359                  }
 360              }
 361          }
 362          unset($match);
 363  
 364          if (sizeof($word_indizes))
 365          {
 366              $word_indizes = array_unique($word_indizes);
 367              sort($word_indizes);
 368  
 369              $wordnum = sizeof($word_indizes);
 370              // number of characters on the right and left side of each word
 371              $sequence_length = (int) ($length / (2 * $wordnum)) - 2;
 372              $final_text = '';
 373              $word = $j = 0;
 374              $final_text_index = -1;
 375  
 376              // cycle through every character in the original text
 377              for ($i = $word_indizes[$word], $n = utf8_strlen($text); $i < $n; $i++)
 378              {
 379                  // if the current position is the start of one of the words then append $sequence_length characters to the final text
 380                  if (isset($word_indizes[$word]) && ($i == $word_indizes[$word]))
 381                  {
 382                      if ($final_text_index < $i - $sequence_length - 1)
 383                      {
 384                          $final_text .= '... ' . preg_replace('#^([^ ]*)#', '', utf8_substr($text, $i - $sequence_length, $sequence_length));
 385                      }
 386                      else
 387                      {
 388                          // if the final text is already nearer to the current word than $sequence_length we only append the text
 389                          // from its current index on and distribute the unused length to all other sequenes
 390                          $sequence_length += (int) (($final_text_index - $i + $sequence_length + 1) / (2 * $wordnum));
 391                          $final_text .= utf8_substr($text, $final_text_index + 1, $i - $final_text_index - 1);
 392                      }
 393                      $final_text_index = $i - 1;
 394  
 395                      // add the following characters to the final text (see below)
 396                      $word++;
 397                      $j = 1;
 398                  }
 399  
 400                  if ($j > 0)
 401                  {
 402                      // add the character to the final text and increment the sequence counter
 403                      $final_text .= utf8_substr($text, $i, 1);
 404                      $final_text_index++;
 405                      $j++;
 406  
 407                      // if this is a whitespace then check whether we are done with this sequence
 408                      if (utf8_substr($text, $i, 1) == ' ')
 409                      {
 410                          // only check whether we have to exit the context generation completely if we haven't already reached the end anyway
 411                          if ($i + 4 < $n)
 412                          {
 413                              if (($j > $sequence_length && $word >= $wordnum) || utf8_strlen($final_text) > $length)
 414                              {
 415                                  $final_text .= ' ...';
 416                                  break;
 417                              }
 418                          }
 419                          else
 420                          {
 421                              // make sure the text really reaches the end
 422                              $j -= 4;
 423                          }
 424  
 425                          // stop context generation and wait for the next word
 426                          if ($j > $sequence_length)
 427                          {
 428                              $j = 0;
 429                          }
 430                      }
 431                  }
 432              }
 433              return str_replace($characters, $entities, $final_text);
 434          }
 435      }
 436  
 437      if (!sizeof($words) || !sizeof($word_indizes))
 438      {
 439          return str_replace($characters, $entities, ((utf8_strlen($text) >= $length + 3) ? utf8_substr($text, 0, $length) . '...' : $text));
 440      }
 441  }
 442  
 443  /**
 444  * Cleans a search string by removing single wildcards from it and replacing multiple spaces with a single one.
 445  *
 446  * @param string $search_string The full search string which should be cleaned.
 447  *
 448  * @return string The cleaned search string without any wildcards and multiple spaces.
 449  */
 450  function phpbb_clean_search_string($search_string)
 451  {
 452      // This regular expressions matches every single wildcard.
 453      // That means one after a whitespace or the beginning of the string or one before a whitespace or the end of the string.
 454      $search_string = preg_replace('#(?<=^|\s)\*+(?=\s|$)#', '', $search_string);
 455      $search_string = trim($search_string);
 456      $search_string = preg_replace(array('#\s+#u', '#\*+#u'), array(' ', '*'), $search_string);
 457      return $search_string;
 458  }
 459  
 460  /**
 461  * Decode text whereby text is coming from the db and expected to be pre-parsed content
 462  * We are placing this outside of the message parser because we are often in need of it...
 463  */
 464  function decode_message(&$message, $bbcode_uid = '')
 465  {
 466      global $config, $phpbb_dispatcher;
 467  
 468      if ($bbcode_uid)
 469      {
 470          $match = array('<br />', "[/*:m:$bbcode_uid]", ":u:$bbcode_uid", ":o:$bbcode_uid", ":$bbcode_uid");
 471          $replace = array("\n", '', '', '', '');
 472      }
 473      else
 474      {
 475          $match = array('<br />');
 476          $replace = array("\n");
 477      }
 478  
 479      /**
 480      * Use this event to modify the message before it is decoded
 481      *
 482      * @event core.decode_message_before
 483      * @var string    message_text    The message content
 484      * @var string    bbcode_uid        The message BBCode UID
 485      * @since 3.1.9-RC1
 486      */
 487      $message_text = $message;
 488      $vars = array('message_text', 'bbcode_uid');
 489      extract($phpbb_dispatcher->trigger_event('core.decode_message_before', compact($vars)));
 490      $message = $message_text;
 491  
 492      $message = str_replace($match, $replace, $message);
 493  
 494      $match = get_preg_expression('bbcode_htm');
 495      $replace = array('\1', '\1', '\2', '\1', '', '');
 496  
 497      $message = preg_replace($match, $replace, $message);
 498  
 499      /**
 500      * Use this event to modify the message after it is decoded
 501      *
 502      * @event core.decode_message_after
 503      * @var string    message_text    The message content
 504      * @var string    bbcode_uid        The message BBCode UID
 505      * @since 3.1.9-RC1
 506      */
 507      $message_text = $message;
 508      $vars = array('message_text', 'bbcode_uid');
 509      extract($phpbb_dispatcher->trigger_event('core.decode_message_after', compact($vars)));
 510      $message = $message_text;
 511  }
 512  
 513  /**
 514  * Strips all bbcode from a text and returns the plain content
 515  */
 516  function strip_bbcode(&$text, $uid = '')
 517  {
 518      if (!$uid)
 519      {
 520          $uid = '[0-9a-z]{5,}';
 521      }
 522  
 523      $text = preg_replace("#\[\/?[a-z0-9\*\+\-]+(?:=(?:&quot;.*&quot;|[^\]]*))?(?::[a-z])?(\:$uid)\]#", ' ', $text);
 524  
 525      $match = get_preg_expression('bbcode_htm');
 526      $replace = array('\1', '\1', '\2', '\1', '', '');
 527  
 528      $text = preg_replace($match, $replace, $text);
 529  }
 530  
 531  /**
 532  * For display of custom parsed text on user-facing pages
 533  * Expects $text to be the value directly from the database (stored value)
 534  */
 535  function generate_text_for_display($text, $uid, $bitfield, $flags, $censor_text = true)
 536  {
 537      static $bbcode;
 538      global $phpbb_dispatcher;
 539  
 540      if ($text === '')
 541      {
 542          return '';
 543      }
 544  
 545      /**
 546      * Use this event to modify the text before it is parsed
 547      *
 548      * @event core.modify_text_for_display_before
 549      * @var string    text            The text to parse
 550      * @var string    uid                The BBCode UID
 551      * @var string    bitfield        The BBCode Bitfield
 552      * @var int        flags            The BBCode Flags
 553      * @var bool        censor_text        Whether or not to apply word censors
 554      * @since 3.1.0-a1
 555      */
 556      $vars = array('text', 'uid', 'bitfield', 'flags', 'censor_text');
 557      extract($phpbb_dispatcher->trigger_event('core.modify_text_for_display_before', compact($vars)));
 558  
 559      if ($censor_text)
 560      {
 561          $text = censor_text($text);
 562      }
 563  
 564      // Parse bbcode if bbcode uid stored and bbcode enabled
 565      if ($uid && ($flags & OPTION_FLAG_BBCODE))
 566      {
 567          if (!class_exists('bbcode'))
 568          {
 569              global $phpbb_root_path, $phpEx;
 570              include($phpbb_root_path . 'includes/bbcode.' . $phpEx);
 571          }
 572  
 573          if (empty($bbcode))
 574          {
 575              $bbcode = new bbcode($bitfield);
 576          }
 577          else
 578          {
 579              $bbcode->bbcode($bitfield);
 580          }
 581  
 582          $bbcode->bbcode_second_pass($text, $uid);
 583      }
 584  
 585      $text = bbcode_nl2br($text);
 586      $text = smiley_text($text, !($flags & OPTION_FLAG_SMILIES));
 587  
 588      /**
 589      * Use this event to modify the text after it is parsed
 590      *
 591      * @event core.modify_text_for_display_after
 592      * @var string    text        The text to parse
 593      * @var string    uid            The BBCode UID
 594      * @var string    bitfield    The BBCode Bitfield
 595      * @var int        flags        The BBCode Flags
 596      * @since 3.1.0-a1
 597      */
 598      $vars = array('text', 'uid', 'bitfield', 'flags');
 599      extract($phpbb_dispatcher->trigger_event('core.modify_text_for_display_after', compact($vars)));
 600  
 601      return $text;
 602  }
 603  
 604  /**
 605  * For parsing custom parsed text to be stored within the database.
 606  * This function additionally returns the uid and bitfield that needs to be stored.
 607  * Expects $text to be the value directly from request_var() and in it's non-parsed form
 608  *
 609  * @param string $text The text to be replaced with the parsed one
 610  * @param string $uid The BBCode uid for this parse
 611  * @param string $bitfield The BBCode bitfield for this parse
 612  * @param int $flags The allow_bbcode, allow_urls and allow_smilies compiled into a single integer.
 613  * @param bool $allow_bbcode If BBCode is allowed (i.e. if BBCode is parsed)
 614  * @param bool $allow_urls If urls is allowed
 615  * @param bool $allow_smilies If smilies are allowed
 616  *
 617  * @return array    An array of string with the errors that occurred while parsing
 618  */
 619  function generate_text_for_storage(&$text, &$uid, &$bitfield, &$flags, $allow_bbcode = false, $allow_urls = false, $allow_smilies = false)
 620  {
 621      global $phpbb_root_path, $phpEx, $phpbb_dispatcher;
 622  
 623      /**
 624      * Use this event to modify the text before it is prepared for storage
 625      *
 626      * @event core.modify_text_for_storage_before
 627      * @var string    text            The text to parse
 628      * @var string    uid                The BBCode UID
 629      * @var string    bitfield        The BBCode Bitfield
 630      * @var int        flags            The BBCode Flags
 631      * @var bool        allow_bbcode    Whether or not to parse BBCode
 632      * @var bool        allow_urls        Whether or not to parse URLs
 633      * @var bool        allow_smilies    Whether or not to parse Smilies
 634      * @since 3.1.0-a1
 635      */
 636      $vars = array(
 637          'text',
 638          'uid',
 639          'bitfield',
 640          'flags',
 641          'allow_bbcode',
 642          'allow_urls',
 643          'allow_smilies',
 644      );
 645      extract($phpbb_dispatcher->trigger_event('core.modify_text_for_storage_before', compact($vars)));
 646  
 647      $uid = $bitfield = '';
 648      $flags = (($allow_bbcode) ? OPTION_FLAG_BBCODE : 0) + (($allow_smilies) ? OPTION_FLAG_SMILIES : 0) + (($allow_urls) ? OPTION_FLAG_LINKS : 0);
 649  
 650      if ($text === '')
 651      {
 652          return;
 653      }
 654  
 655      if (!class_exists('parse_message'))
 656      {
 657          include($phpbb_root_path . 'includes/message_parser.' . $phpEx);
 658      }
 659  
 660      $message_parser = new parse_message($text);
 661      $message_parser->parse($allow_bbcode, $allow_urls, $allow_smilies);
 662  
 663      $text = $message_parser->message;
 664      $uid = $message_parser->bbcode_uid;
 665  
 666      // If the bbcode_bitfield is empty, there is no need for the uid to be stored.
 667      if (!$message_parser->bbcode_bitfield)
 668      {
 669          $uid = '';
 670      }
 671  
 672      $bitfield = $message_parser->bbcode_bitfield;
 673  
 674      /**
 675      * Use this event to modify the text after it is prepared for storage
 676      *
 677      * @event core.modify_text_for_storage_after
 678      * @var string    text            The text to parse
 679      * @var string    uid                The BBCode UID
 680      * @var string    bitfield        The BBCode Bitfield
 681      * @var int        flags            The BBCode Flags
 682      * @since 3.1.0-a1
 683      */
 684      $vars = array('text', 'uid', 'bitfield', 'flags');
 685      extract($phpbb_dispatcher->trigger_event('core.modify_text_for_storage_after', compact($vars)));
 686  
 687      return $message_parser->warn_msg;
 688  }
 689  
 690  /**
 691  * For decoding custom parsed text for edits as well as extracting the flags
 692  * Expects $text to be the value directly from the database (pre-parsed content)
 693  */
 694  function generate_text_for_edit($text, $uid, $flags)
 695  {
 696      global $phpbb_root_path, $phpEx, $phpbb_dispatcher;
 697  
 698      /**
 699      * Use this event to modify the text before it is decoded for editing
 700      *
 701      * @event core.modify_text_for_edit_before
 702      * @var string    text            The text to parse
 703      * @var string    uid                The BBCode UID
 704      * @var int        flags            The BBCode Flags
 705      * @since 3.1.0-a1
 706      */
 707      $vars = array('text', 'uid', 'flags');
 708      extract($phpbb_dispatcher->trigger_event('core.modify_text_for_edit_before', compact($vars)));
 709  
 710      decode_message($text, $uid);
 711  
 712      /**
 713      * Use this event to modify the text after it is decoded for editing
 714      *
 715      * @event core.modify_text_for_edit_after
 716      * @var string    text            The text to parse
 717      * @var int        flags            The BBCode Flags
 718      * @since 3.1.0-a1
 719      */
 720      $vars = array('text', 'flags');
 721      extract($phpbb_dispatcher->trigger_event('core.modify_text_for_edit_after', compact($vars)));
 722  
 723      return array(
 724          'allow_bbcode'    => ($flags & OPTION_FLAG_BBCODE) ? 1 : 0,
 725          'allow_smilies'    => ($flags & OPTION_FLAG_SMILIES) ? 1 : 0,
 726          'allow_urls'    => ($flags & OPTION_FLAG_LINKS) ? 1 : 0,
 727          'text'            => $text
 728      );
 729  }
 730  
 731  /**
 732  * A subroutine of make_clickable used with preg_replace
 733  * It places correct HTML around an url, shortens the displayed text
 734  * and makes sure no entities are inside URLs
 735  */
 736  function make_clickable_callback($type, $whitespace, $url, $relative_url, $class)
 737  {
 738      $orig_url        = $url;
 739      $orig_relative    = $relative_url;
 740      $append            = '';
 741      $url            = htmlspecialchars_decode($url);
 742      $relative_url    = htmlspecialchars_decode($relative_url);
 743  
 744      // make sure no HTML entities were matched
 745      $chars = array('<', '>', '"');
 746      $split = false;
 747  
 748      foreach ($chars as $char)
 749      {
 750          $next_split = strpos($url, $char);
 751          if ($next_split !== false)
 752          {
 753              $split = ($split !== false) ? min($split, $next_split) : $next_split;
 754          }
 755      }
 756  
 757      if ($split !== false)
 758      {
 759          // an HTML entity was found, so the URL has to end before it
 760          $append            = substr($url, $split) . $relative_url;
 761          $url            = substr($url, 0, $split);
 762          $relative_url    = '';
 763      }
 764      else if ($relative_url)
 765      {
 766          // same for $relative_url
 767          $split = false;
 768          foreach ($chars as $char)
 769          {
 770              $next_split = strpos($relative_url, $char);
 771              if ($next_split !== false)
 772              {
 773                  $split = ($split !== false) ? min($split, $next_split) : $next_split;
 774              }
 775          }
 776  
 777          if ($split !== false)
 778          {
 779              $append            = substr($relative_url, $split);
 780              $relative_url    = substr($relative_url, 0, $split);
 781          }
 782      }
 783  
 784      // if the last character of the url is a punctuation mark, exclude it from the url
 785      $last_char = ($relative_url) ? $relative_url[strlen($relative_url) - 1] : $url[strlen($url) - 1];
 786  
 787      switch ($last_char)
 788      {
 789          case '.':
 790          case '?':
 791          case '!':
 792          case ':':
 793          case ',':
 794              $append = $last_char;
 795              if ($relative_url)
 796              {
 797                  $relative_url = substr($relative_url, 0, -1);
 798              }
 799              else
 800              {
 801                  $url = substr($url, 0, -1);
 802              }
 803          break;
 804  
 805          // set last_char to empty here, so the variable can be used later to
 806          // check whether a character was removed
 807          default:
 808              $last_char = '';
 809          break;
 810      }
 811  
 812      $short_url = (utf8_strlen($url) > 55) ? utf8_substr($url, 0, 39) . ' ... ' . utf8_substr($url, -10) : $url;
 813  
 814      switch ($type)
 815      {
 816          case MAGIC_URL_LOCAL:
 817              $tag            = 'l';
 818              $relative_url    = preg_replace('/[&?]sid=[0-9a-f]{32}$/', '', preg_replace('/([&?])sid=[0-9a-f]{32}&/', '$1', $relative_url));
 819              $url            = $url . '/' . $relative_url;
 820              $text            = $relative_url;
 821  
 822              // this url goes to http://domain.tld/path/to/board/ which
 823              // would result in an empty link if treated as local so
 824              // don't touch it and let MAGIC_URL_FULL take care of it.
 825              if (!$relative_url)
 826              {
 827                  return $whitespace . $orig_url . '/' . $orig_relative; // slash is taken away by relative url pattern
 828              }
 829          break;
 830  
 831          case MAGIC_URL_FULL:
 832              $tag    = 'm';
 833              $text    = $short_url;
 834          break;
 835  
 836          case MAGIC_URL_WWW:
 837              $tag    = 'w';
 838              $url    = 'http://' . $url;
 839              $text    = $short_url;
 840          break;
 841  
 842          case MAGIC_URL_EMAIL:
 843              $tag    = 'e';
 844              $text    = $short_url;
 845              $url    = 'mailto:' . $url;
 846          break;
 847      }
 848  
 849      $url    = htmlspecialchars($url);
 850      $text    = htmlspecialchars($text);
 851      $append    = htmlspecialchars($append);
 852  
 853      $html    = "$whitespace<!-- $tag --><a$class href=\"$url\">$text</a><!-- $tag -->$append";
 854  
 855      return $html;
 856  }
 857  
 858  /**
 859  * make_clickable function
 860  *
 861  * Replace magic urls of form http://xxx.xxx., www.xxx. and xxx@xxx.xxx.
 862  * Cuts down displayed size of link if over 50 chars, turns absolute links
 863  * into relative versions when the server/script path matches the link
 864  */
 865  function make_clickable($text, $server_url = false, $class = 'postlink')
 866  {
 867      if ($server_url === false)
 868      {
 869          $server_url = generate_board_url();
 870      }
 871  
 872      static $static_class;
 873      static $magic_url_match_args;
 874  
 875      if (!isset($magic_url_match_args[$server_url]) || $static_class != $class)
 876      {
 877          $static_class = $class;
 878          $class = ($static_class) ? ' class="' . $static_class . '"' : '';
 879          $local_class = ($static_class) ? ' class="' . $static_class . '-local"' : '';
 880  
 881          if (!is_array($magic_url_match_args))
 882          {
 883              $magic_url_match_args = array();
 884          }
 885  
 886          // relative urls for this board
 887          $magic_url_match_args[$server_url][] = array(
 888              '#(^|[\n\t (>.])(' . preg_quote($server_url, '#') . ')/(' . get_preg_expression('relative_url_inline') . ')#iu',
 889              MAGIC_URL_LOCAL,
 890              $local_class,
 891          );
 892  
 893          // matches a xxxx://aaaaa.bbb.cccc. ...
 894          $magic_url_match_args[$server_url][] = array(
 895              '#(^|[\n\t (>.])(' . get_preg_expression('url_inline') . ')#iu',
 896              MAGIC_URL_FULL,
 897              $class,
 898          );
 899  
 900          // matches a "www.xxxx.yyyy[/zzzz]" kinda lazy URL thing
 901          $magic_url_match_args[$server_url][] = array(
 902              '#(^|[\n\t (>])(' . get_preg_expression('www_url_inline') . ')#iu',
 903              MAGIC_URL_WWW,
 904              $class,
 905          );
 906  
 907          // matches an email@domain type address at the start of a line, or after a space or after what might be a BBCode.
 908          $magic_url_match_args[$server_url][] = array(
 909              '/(^|[\n\t (>])(' . get_preg_expression('email') . ')/iu',
 910              MAGIC_URL_EMAIL,
 911              '',
 912          );
 913      }
 914  
 915      foreach ($magic_url_match_args[$server_url] as $magic_args)
 916      {
 917          if (preg_match($magic_args[0], $text, $matches))
 918          {
 919              $text = preg_replace_callback($magic_args[0], function($matches) use ($magic_args)
 920              {
 921                  $relative_url = isset($matches[3]) ? $matches[3] : '';
 922                  return make_clickable_callback($magic_args[1], $matches[1], $matches[2], $relative_url, $magic_args[2]);
 923              }, $text);
 924          }
 925      }
 926  
 927      return $text;
 928  }
 929  
 930  /**
 931  * Censoring
 932  */
 933  function censor_text($text)
 934  {
 935      static $censors;
 936  
 937      // Nothing to do?
 938      if ($text === '')
 939      {
 940          return '';
 941      }
 942  
 943      // We moved the word censor checks in here because we call this function quite often - and then only need to do the check once
 944      if (!isset($censors) || !is_array($censors))
 945      {
 946          global $config, $user, $auth, $cache;
 947  
 948          // We check here if the user is having viewing censors disabled (and also allowed to do so).
 949          if (!$user->optionget('viewcensors') && $config['allow_nocensors'] && $auth->acl_get('u_chgcensors'))
 950          {
 951              $censors = array();
 952          }
 953          else
 954          {
 955              $censors = $cache->obtain_word_list();
 956          }
 957      }
 958  
 959      if (sizeof($censors))
 960      {
 961          return preg_replace($censors['match'], $censors['replace'], $text);
 962      }
 963  
 964      return $text;
 965  }
 966  
 967  /**
 968  * custom version of nl2br which takes custom BBCodes into account
 969  */
 970  function bbcode_nl2br($text)
 971  {
 972      // custom BBCodes might contain carriage returns so they
 973      // are not converted into <br /> so now revert that
 974      $text = str_replace(array("\n", "\r"), array('<br />', "\n"), $text);
 975      return $text;
 976  }
 977  
 978  /**
 979  * Smiley processing
 980  */
 981  function smiley_text($text, $force_option = false)
 982  {
 983      global $config, $user, $phpbb_path_helper;
 984  
 985      if ($force_option || !$config['allow_smilies'] || !$user->optionget('viewsmilies'))
 986      {
 987          return preg_replace('#<!\-\- s(.*?) \-\-><img src="\{SMILIES_PATH\}\/.*? \/><!\-\- s\1 \-\->#', '\1', $text);
 988      }
 989      else
 990      {
 991          $root_path = (defined('PHPBB_USE_BOARD_URL_PATH') && PHPBB_USE_BOARD_URL_PATH) ? generate_board_url() . '/' : $phpbb_path_helper->get_web_root_path();
 992          return preg_replace('#<!\-\- s(.*?) \-\-><img src="\{SMILIES_PATH\}\/(.*?) \/><!\-\- s\1 \-\->#', '<img class="smilies" src="' . $root_path . $config['smilies_path'] . '/\2 />', $text);
 993      }
 994  }
 995  
 996  /**
 997  * General attachment parsing
 998  *
 999  * @param mixed $forum_id The forum id the attachments are displayed in (false if in private message)
1000  * @param string &$message The post/private message
1001  * @param array &$attachments The attachments to parse for (inline) display. The attachments array will hold templated data after parsing.
1002  * @param array &$update_count The attachment counts to be updated - will be filled
1003  * @param bool $preview If set to true the attachments are parsed for preview. Within preview mode the comments are fetched from the given $attachments array and not fetched from the database.
1004  */
1005  function parse_attachments($forum_id, &$message, &$attachments, &$update_count, $preview = false)
1006  {
1007      if (!sizeof($attachments))
1008      {
1009          return;
1010      }
1011  
1012      global $template, $cache, $user, $phpbb_dispatcher;
1013      global $extensions, $config, $phpbb_root_path, $phpEx;
1014  
1015      //
1016      $compiled_attachments = array();
1017  
1018      if (!isset($template->filename['attachment_tpl']))
1019      {
1020          $template->set_filenames(array(
1021              'attachment_tpl'    => 'attachment.html')
1022          );
1023      }
1024  
1025      if (empty($extensions) || !is_array($extensions))
1026      {
1027          $extensions = $cache->obtain_attach_extensions($forum_id);
1028      }
1029  
1030      // Look for missing attachment information...
1031      $attach_ids = array();
1032      foreach ($attachments as $pos => $attachment)
1033      {
1034          // If is_orphan is set, we need to retrieve the attachments again...
1035          if (!isset($attachment['extension']) && !isset($attachment['physical_filename']))
1036          {
1037              $attach_ids[(int) $attachment['attach_id']] = $pos;
1038          }
1039      }
1040  
1041      // Grab attachments (security precaution)
1042      if (sizeof($attach_ids))
1043      {
1044          global $db;
1045  
1046          $new_attachment_data = array();
1047  
1048          $sql = 'SELECT *
1049              FROM ' . ATTACHMENTS_TABLE . '
1050              WHERE ' . $db->sql_in_set('attach_id', array_keys($attach_ids));
1051          $result = $db->sql_query($sql);
1052  
1053          while ($row = $db->sql_fetchrow($result))
1054          {
1055              if (!isset($attach_ids[$row['attach_id']]))
1056              {
1057                  continue;
1058              }
1059  
1060              // If we preview attachments we will set some retrieved values here
1061              if ($preview)
1062              {
1063                  $row['attach_comment'] = $attachments[$attach_ids[$row['attach_id']]]['attach_comment'];
1064              }
1065  
1066              $new_attachment_data[$attach_ids[$row['attach_id']]] = $row;
1067          }
1068          $db->sql_freeresult($result);
1069  
1070          $attachments = $new_attachment_data;
1071          unset($new_attachment_data);
1072      }
1073  
1074      // Make sure attachments are properly ordered
1075      ksort($attachments);
1076  
1077      foreach ($attachments as $attachment)
1078      {
1079          if (!sizeof($attachment))
1080          {
1081              continue;
1082          }
1083  
1084          // We need to reset/empty the _file block var, because this function might be called more than once
1085          $template->destroy_block_vars('_file');
1086  
1087          $block_array = array();
1088  
1089          // Some basics...
1090          $attachment['extension'] = strtolower(trim($attachment['extension']));
1091          $filename = $phpbb_root_path . $config['upload_path'] . '/' . utf8_basename($attachment['physical_filename']);
1092          $thumbnail_filename = $phpbb_root_path . $config['upload_path'] . '/thumb_' . utf8_basename($attachment['physical_filename']);
1093  
1094          $upload_icon = '';
1095  
1096          if (isset($extensions[$attachment['extension']]))
1097          {
1098              if ($user->img('icon_topic_attach', '') && !$extensions[$attachment['extension']]['upload_icon'])
1099              {
1100                  $upload_icon = $user->img('icon_topic_attach', '');
1101              }
1102              else if ($extensions[$attachment['extension']]['upload_icon'])
1103              {
1104                  $upload_icon = '<img src="' . $phpbb_root_path . $config['upload_icons_path'] . '/' . trim($extensions[$attachment['extension']]['upload_icon']) . '" alt="" />';
1105              }
1106          }
1107  
1108          $filesize = get_formatted_filesize($attachment['filesize'], false);
1109  
1110          $comment = bbcode_nl2br(censor_text($attachment['attach_comment']));
1111  
1112          $block_array += array(
1113              'UPLOAD_ICON'        => $upload_icon,
1114              'FILESIZE'            => $filesize['value'],
1115              'SIZE_LANG'            => $filesize['unit'],
1116              'DOWNLOAD_NAME'        => utf8_basename($attachment['real_filename']),
1117              'COMMENT'            => $comment,
1118          );
1119  
1120          $denied = false;
1121  
1122          if (!extension_allowed($forum_id, $attachment['extension'], $extensions))
1123          {
1124              $denied = true;
1125  
1126              $block_array += array(
1127                  'S_DENIED'            => true,
1128                  'DENIED_MESSAGE'    => sprintf($user->lang['EXTENSION_DISABLED_AFTER_POSTING'], $attachment['extension'])
1129              );
1130          }
1131  
1132          if (!$denied)
1133          {
1134              $l_downloaded_viewed = $download_link = '';
1135              $display_cat = $extensions[$attachment['extension']]['display_cat'];
1136  
1137              if ($display_cat == ATTACHMENT_CATEGORY_IMAGE)
1138              {
1139                  if ($attachment['thumbnail'])
1140                  {
1141                      $display_cat = ATTACHMENT_CATEGORY_THUMB;
1142                  }
1143                  else
1144                  {
1145                      if ($config['img_display_inlined'])
1146                      {
1147                          if ($config['img_link_width'] || $config['img_link_height'])
1148                          {
1149                              $dimension = @getimagesize($filename);
1150  
1151                              // If the dimensions could not be determined or the image being 0x0 we display it as a link for safety purposes
1152                              if ($dimension === false || empty($dimension[0]) || empty($dimension[1]))
1153                              {
1154                                  $display_cat = ATTACHMENT_CATEGORY_NONE;
1155                              }
1156                              else
1157                              {
1158                                  $display_cat = ($dimension[0] <= $config['img_link_width'] && $dimension[1] <= $config['img_link_height']) ? ATTACHMENT_CATEGORY_IMAGE : ATTACHMENT_CATEGORY_NONE;
1159                              }
1160                          }
1161                      }
1162                      else
1163                      {
1164                          $display_cat = ATTACHMENT_CATEGORY_NONE;
1165                      }
1166                  }
1167              }
1168  
1169              // Make some descisions based on user options being set.
1170              if (($display_cat == ATTACHMENT_CATEGORY_IMAGE || $display_cat == ATTACHMENT_CATEGORY_THUMB) && !$user->optionget('viewimg'))
1171              {
1172                  $display_cat = ATTACHMENT_CATEGORY_NONE;
1173              }
1174  
1175              if ($display_cat == ATTACHMENT_CATEGORY_FLASH && !$user->optionget('viewflash'))
1176              {
1177                  $display_cat = ATTACHMENT_CATEGORY_NONE;
1178              }
1179  
1180              $download_link = append_sid("{$phpbb_root_path}download/file.$phpEx", 'id=' . $attachment['attach_id']);
1181              $l_downloaded_viewed = 'VIEWED_COUNTS';
1182  
1183              switch ($display_cat)
1184              {
1185                  // Images
1186                  case ATTACHMENT_CATEGORY_IMAGE:
1187                      $inline_link = append_sid("{$phpbb_root_path}download/file.$phpEx", 'id=' . $attachment['attach_id']);
1188                      $download_link .= '&amp;mode=view';
1189  
1190                      $block_array += array(
1191                          'S_IMAGE'        => true,
1192                          'U_INLINE_LINK'        => $inline_link,
1193                      );
1194  
1195                      $update_count[] = $attachment['attach_id'];
1196                  break;
1197  
1198                  // Images, but display Thumbnail
1199                  case ATTACHMENT_CATEGORY_THUMB:
1200                      $thumbnail_link = append_sid("{$phpbb_root_path}download/file.$phpEx", 'id=' . $attachment['attach_id'] . '&amp;t=1');
1201                      $download_link .= '&amp;mode=view';
1202  
1203                      $block_array += array(
1204                          'S_THUMBNAIL'        => true,
1205                          'THUMB_IMAGE'        => $thumbnail_link,
1206                      );
1207  
1208                      $update_count[] = $attachment['attach_id'];
1209                  break;
1210  
1211                  // Windows Media Streams
1212                  case ATTACHMENT_CATEGORY_WM:
1213  
1214                      // Giving the filename directly because within the wm object all variables are in local context making it impossible
1215                      // to validate against a valid session (all params can differ)
1216                      // $download_link = $filename;
1217  
1218                      $block_array += array(
1219                          'U_FORUM'        => generate_board_url(),
1220                          'ATTACH_ID'        => $attachment['attach_id'],
1221                          'S_WM_FILE'        => true,
1222                      );
1223  
1224                      // Viewed/Heared File ... update the download count
1225                      $update_count[] = $attachment['attach_id'];
1226                  break;
1227  
1228                  // Real Media Streams
1229                  case ATTACHMENT_CATEGORY_RM:
1230                  case ATTACHMENT_CATEGORY_QUICKTIME:
1231  
1232                      $block_array += array(
1233                          'S_RM_FILE'            => ($display_cat == ATTACHMENT_CATEGORY_RM) ? true : false,
1234                          'S_QUICKTIME_FILE'    => ($display_cat == ATTACHMENT_CATEGORY_QUICKTIME) ? true : false,
1235                          'U_FORUM'            => generate_board_url(),
1236                          'ATTACH_ID'            => $attachment['attach_id'],
1237                      );
1238  
1239                      // Viewed/Heared File ... update the download count
1240                      $update_count[] = $attachment['attach_id'];
1241                  break;
1242  
1243                  // Macromedia Flash Files
1244                  case ATTACHMENT_CATEGORY_FLASH:
1245                      list($width, $height) = @getimagesize($filename);
1246  
1247                      $block_array += array(
1248                          'S_FLASH_FILE'    => true,
1249                          'WIDTH'            => $width,
1250                          'HEIGHT'        => $height,
1251                          'U_VIEW_LINK'    => $download_link . '&amp;view=1',
1252                      );
1253  
1254                      // Viewed/Heared File ... update the download count
1255                      $update_count[] = $attachment['attach_id'];
1256                  break;
1257  
1258                  default:
1259                      $l_downloaded_viewed = 'DOWNLOAD_COUNTS';
1260  
1261                      $block_array += array(
1262                          'S_FILE'        => true,
1263                      );
1264                  break;
1265              }
1266  
1267              if (!isset($attachment['download_count']))
1268              {
1269                  $attachment['download_count'] = 0;
1270              }
1271  
1272              $block_array += array(
1273                  'U_DOWNLOAD_LINK'        => $download_link,
1274                  'L_DOWNLOAD_COUNT'        => $user->lang($l_downloaded_viewed, (int) $attachment['download_count']),
1275              );
1276          }
1277  
1278          /**
1279          * Use this event to modify the attachment template data.
1280          *
1281          * This event is triggered once per attachment.
1282          *
1283          * @event core.parse_attachments_modify_template_data
1284          * @var array    attachment        Array with attachment data
1285          * @var array    block_array        Template data of the attachment
1286          * @var int        display_cat        Attachment category data
1287          * @var string    download_link    Attachment download link
1288          * @var array    extensions        Array with attachment extensions data
1289          * @var mixed     forum_id         The forum id the attachments are displayed in (false if in private message)
1290          * @var bool        preview            Flag indicating if we are in post preview mode
1291          * @var array    update_count    Array with attachment ids to update download count
1292          * @since 3.1.0-RC5
1293          */
1294          $vars = array(
1295              'attachment',
1296              'block_array',
1297              'display_cat',
1298              'download_link',
1299              'extensions',
1300              'forum_id',
1301              'preview',
1302              'update_count',
1303          );
1304          extract($phpbb_dispatcher->trigger_event('core.parse_attachments_modify_template_data', compact($vars)));
1305  
1306          $template->assign_block_vars('_file', $block_array);
1307  
1308          $compiled_attachments[] = $template->assign_display('attachment_tpl');
1309      }
1310  
1311      $attachments = $compiled_attachments;
1312      unset($compiled_attachments);
1313  
1314      $unset_tpl = array();
1315  
1316      preg_match_all('#<!\-\- ia([0-9]+) \-\->(.*?)<!\-\- ia\1 \-\->#', $message, $matches, PREG_PATTERN_ORDER);
1317  
1318      $replace = array();
1319      foreach ($matches[0] as $num => $capture)
1320      {
1321          $index = $matches[1][$num];
1322  
1323          $replace['from'][] = $matches[0][$num];
1324          $replace['to'][] = (isset($attachments[$index])) ? $attachments[$index] : sprintf($user->lang['MISSING_INLINE_ATTACHMENT'], $matches[2][array_search($index, $matches[1])]);
1325  
1326          $unset_tpl[] = $index;
1327      }
1328  
1329      if (isset($replace['from']))
1330      {
1331          $message = str_replace($replace['from'], $replace['to'], $message);
1332      }
1333  
1334      $unset_tpl = array_unique($unset_tpl);
1335  
1336      // Sort correctly
1337      if ($config['display_order'])
1338      {
1339          // Ascending sort
1340          krsort($attachments);
1341      }
1342      else
1343      {
1344          // Descending sort
1345          ksort($attachments);
1346      }
1347  
1348      // Needed to let not display the inlined attachments at the end of the post again
1349      foreach ($unset_tpl as $index)
1350      {
1351          unset($attachments[$index]);
1352      }
1353  }
1354  
1355  /**
1356  * Check if extension is allowed to be posted.
1357  *
1358  * @param mixed $forum_id The forum id to check or false if private message
1359  * @param string $extension The extension to check, for example zip.
1360  * @param array &$extensions The extension array holding the information from the cache (will be obtained if empty)
1361  *
1362  * @return bool False if the extension is not allowed to be posted, else true.
1363  */
1364  function extension_allowed($forum_id, $extension, &$extensions)
1365  {
1366      if (empty($extensions))
1367      {
1368          global $cache;
1369          $extensions = $cache->obtain_attach_extensions($forum_id);
1370      }
1371  
1372      return (!isset($extensions['_allowed_'][$extension])) ? false : true;
1373  }
1374  
1375  /**
1376  * Truncates string while retaining special characters if going over the max length
1377  * The default max length is 60 at the moment
1378  * The maximum storage length is there to fit the string within the given length. The string may be further truncated due to html entities.
1379  * For example: string given is 'a "quote"' (length: 9), would be a stored as 'a &quot;quote&quot;' (length: 19)
1380  *
1381  * @param string $string The text to truncate to the given length. String is specialchared.
1382  * @param int $max_length Maximum length of string (multibyte character count as 1 char / Html entity count as 1 char)
1383  * @param int $max_store_length Maximum character length of string (multibyte character count as 1 char / Html entity count as entity chars).
1384  * @param bool $allow_reply Allow Re: in front of string
1385  *     NOTE: This parameter can cause undesired behavior (returning strings longer than $max_store_length) and is deprecated.
1386  * @param string $append String to be appended
1387  */
1388  function truncate_string($string, $max_length = 60, $max_store_length = 255, $allow_reply = false, $append = '')
1389  {
1390      $chars = array();
1391  
1392      $strip_reply = false;
1393      $stripped = false;
1394      if ($allow_reply && strpos($string, 'Re: ') === 0)
1395      {
1396          $strip_reply = true;
1397          $string = substr($string, 4);
1398      }
1399  
1400      $_chars = utf8_str_split(htmlspecialchars_decode($string));
1401      $chars = array_map('utf8_htmlspecialchars', $_chars);
1402  
1403      // Now check the length ;)
1404      if (sizeof($chars) > $max_length)
1405      {
1406          // Cut off the last elements from the array
1407          $string = implode('', array_slice($chars, 0, $max_length - utf8_strlen($append)));
1408          $stripped = true;
1409      }
1410  
1411      // Due to specialchars, we may not be able to store the string...
1412      if (utf8_strlen($string) > $max_store_length)
1413      {
1414          // let's split again, we do not want half-baked strings where entities are split
1415          $_chars = utf8_str_split(htmlspecialchars_decode($string));
1416          $chars = array_map('utf8_htmlspecialchars', $_chars);
1417  
1418          do
1419          {
1420              array_pop($chars);
1421              $string = implode('', $chars);
1422          }
1423          while (!empty($chars) && utf8_strlen($string) > $max_store_length);
1424      }
1425  
1426      if ($strip_reply)
1427      {
1428          $string = 'Re: ' . $string;
1429      }
1430  
1431      if ($append != '' && $stripped)
1432      {
1433          $string = $string . $append;
1434      }
1435  
1436      return $string;
1437  }
1438  
1439  /**
1440  * Get username details for placing into templates.
1441  * This function caches all modes on first call, except for no_profile and anonymous user - determined by $user_id.
1442  *
1443  * @param string $mode Can be profile (for getting an url to the profile), username (for obtaining the username), colour (for obtaining the user colour), full (for obtaining a html string representing a coloured link to the users profile) or no_profile (the same as full but forcing no profile link)
1444  * @param int $user_id The users id
1445  * @param string $username The users name
1446  * @param string $username_colour The users colour
1447  * @param string $guest_username optional parameter to specify the guest username. It will be used in favor of the GUEST language variable then.
1448  * @param string $custom_profile_url optional parameter to specify a profile url. The user id get appended to this url as &amp;u={user_id}
1449  *
1450  * @return string A string consisting of what is wanted based on $mode.
1451  */
1452  function get_username_string($mode, $user_id, $username, $username_colour = '', $guest_username = false, $custom_profile_url = false)
1453  {
1454      static $_profile_cache;
1455      global $phpbb_dispatcher;
1456  
1457      // We cache some common variables we need within this function
1458      if (empty($_profile_cache))
1459      {
1460          global $phpbb_root_path, $phpEx;
1461  
1462          $_profile_cache['base_url'] = append_sid("{$phpbb_root_path}memberlist.$phpEx", 'mode=viewprofile&amp;u={USER_ID}');
1463          $_profile_cache['tpl_noprofile'] = '<span class="username">{USERNAME}</span>';
1464          $_profile_cache['tpl_noprofile_colour'] = '<span style="color: {USERNAME_COLOUR};" class="username-coloured">{USERNAME}</span>';
1465          $_profile_cache['tpl_profile'] = '<a href="{PROFILE_URL}" class="username">{USERNAME}</a>';
1466          $_profile_cache['tpl_profile_colour'] = '<a href="{PROFILE_URL}" style="color: {USERNAME_COLOUR};" class="username-coloured">{USERNAME}</a>';
1467      }
1468  
1469      global $user, $auth;
1470  
1471      // This switch makes sure we only run code required for the mode
1472      switch ($mode)
1473      {
1474          case 'full':
1475          case 'no_profile':
1476          case 'colour':
1477  
1478              // Build correct username colour
1479              $username_colour = ($username_colour) ? '#' . $username_colour : '';
1480  
1481              // Return colour
1482              if ($mode == 'colour')
1483              {
1484                  $username_string = $username_colour;
1485                  break;
1486              }
1487  
1488          // no break;
1489  
1490          case 'username':
1491  
1492              // Build correct username
1493              if ($guest_username === false)
1494              {
1495                  $username = ($username) ? $username : $user->lang['GUEST'];
1496              }
1497              else
1498              {
1499                  $username = ($user_id && $user_id != ANONYMOUS) ? $username : ((!empty($guest_username)) ? $guest_username : $user->lang['GUEST']);
1500              }
1501  
1502              // Return username
1503              if ($mode == 'username')
1504              {
1505                  $username_string = $username;
1506                  break;
1507              }
1508  
1509          // no break;
1510  
1511          case 'profile':
1512  
1513              // Build correct profile url - only show if not anonymous and permission to view profile if registered user
1514              // For anonymous the link leads to a login page.
1515              if ($user_id && $user_id != ANONYMOUS && ($user->data['user_id'] == ANONYMOUS || $auth->acl_get('u_viewprofile')))
1516              {
1517                  $profile_url = ($custom_profile_url !== false) ? $custom_profile_url . '&amp;u=' . (int) $user_id : str_replace(array('={USER_ID}', '=%7BUSER_ID%7D'), '=' . (int) $user_id, $_profile_cache['base_url']);
1518              }
1519              else
1520              {
1521                  $profile_url = '';
1522              }
1523  
1524              // Return profile
1525              if ($mode == 'profile')
1526              {
1527                  $username_string = $profile_url;
1528                  break;
1529              }
1530  
1531          // no break;
1532      }
1533  
1534      if (!isset($username_string))
1535      {
1536          if (($mode == 'full' && !$profile_url) || $mode == 'no_profile')
1537          {
1538              $username_string = str_replace(array('{USERNAME_COLOUR}', '{USERNAME}'), array($username_colour, $username), (!$username_colour) ? $_profile_cache['tpl_noprofile'] : $_profile_cache['tpl_noprofile_colour']);
1539          }
1540          else
1541          {
1542              $username_string = str_replace(array('{PROFILE_URL}', '{USERNAME_COLOUR}', '{USERNAME}'), array($profile_url, $username_colour, $username), (!$username_colour) ? $_profile_cache['tpl_profile'] : $_profile_cache['tpl_profile_colour']);
1543          }
1544      }
1545  
1546      /**
1547      * Use this event to change the output of get_username_string()
1548      *
1549      * @event core.modify_username_string
1550      * @var string mode                profile|username|colour|full|no_profile
1551      * @var int user_id                String or array of additional url
1552      *                                parameters
1553      * @var string username            The user's username
1554      * @var string username_colour    The user's colour
1555      * @var string guest_username    Optional parameter to specify the
1556      *                                guest username.
1557      * @var string custom_profile_url Optional parameter to specify a
1558      *                                profile url.
1559      * @var string username_string    The string that has been generated
1560      * @var array _profile_cache        Array of original return templates
1561      * @since 3.1.0-a1
1562      */
1563      $vars = array(
1564          'mode',
1565          'user_id',
1566          'username',
1567          'username_colour',
1568          'guest_username',
1569          'custom_profile_url',
1570          'username_string',
1571          '_profile_cache',
1572      );
1573      extract($phpbb_dispatcher->trigger_event('core.modify_username_string', compact($vars)));
1574  
1575      return $username_string;
1576  }
1577  
1578  /**
1579   * Add an option to the quick-mod tools.
1580   *
1581   * @param string $url The recepting URL for the quickmod actions.
1582   * @param string $option The language key for the value of the option.
1583   * @param string $lang_string The language string to use.
1584   */
1585  function phpbb_add_quickmod_option($url, $option, $lang_string)
1586  {
1587      global $template, $user, $phpbb_path_helper;
1588  
1589      $lang_string = $user->lang($lang_string);
1590      $template->assign_block_vars('quickmod', array(
1591          'VALUE'        => $option,
1592          'TITLE'        => $lang_string,
1593          'LINK'        => $phpbb_path_helper->append_url_params($url, array('action' => $option)),
1594      ));
1595  }
1596  
1597  /**
1598  * Concatenate an array into a string list.
1599  *
1600  * @param array $items Array of items to concatenate
1601  * @param object $user The phpBB $user object.
1602  *
1603  * @return string String list. Examples: "A"; "A and B"; "A, B, and C"
1604  */
1605  function phpbb_generate_string_list($items, $user)
1606  {
1607      if (empty($items))
1608      {
1609          return '';
1610      }
1611  
1612      $count = sizeof($items);
1613      $last_item = array_pop($items);
1614      $lang_key = 'STRING_LIST_MULTI';
1615  
1616      if ($count == 1)
1617      {
1618          return $last_item;
1619      }
1620      else if ($count == 2)
1621      {
1622          $lang_key = 'STRING_LIST_SIMPLE';
1623      }
1624      $list = implode($user->lang['COMMA_SEPARATOR'], $items);
1625  
1626      return $user->lang($lang_key, $list, $last_item);
1627  }
1628  
1629  class bitfield
1630  {
1631      var $data;
1632  
1633  	function bitfield($bitfield = '')
1634      {
1635          $this->data = base64_decode($bitfield);
1636      }
1637  
1638      /**
1639      */
1640  	function get($n)
1641      {
1642          // Get the ($n / 8)th char
1643          $byte = $n >> 3;
1644  
1645          if (strlen($this->data) >= $byte + 1)
1646          {
1647              $c = $this->data[$byte];
1648  
1649              // Lookup the ($n % 8)th bit of the byte
1650              $bit = 7 - ($n & 7);
1651              return (bool) (ord($c) & (1 << $bit));
1652          }
1653          else
1654          {
1655              return false;
1656          }
1657      }
1658  
1659  	function set($n)
1660      {
1661          $byte = $n >> 3;
1662          $bit = 7 - ($n & 7);
1663  
1664          if (strlen($this->data) >= $byte + 1)
1665          {
1666              $this->data[$byte] = $this->data[$byte] | chr(1 << $bit);
1667          }
1668          else
1669          {
1670              $this->data .= str_repeat("\0", $byte - strlen($this->data));
1671              $this->data .= chr(1 << $bit);
1672          }
1673      }
1674  
1675  	function clear($n)
1676      {
1677          $byte = $n >> 3;
1678  
1679          if (strlen($this->data) >= $byte + 1)
1680          {
1681              $bit = 7 - ($n & 7);
1682              $this->data[$byte] = $this->data[$byte] &~ chr(1 << $bit);
1683          }
1684      }
1685  
1686  	function get_blob()
1687      {
1688          return $this->data;
1689      }
1690  
1691  	function get_base64()
1692      {
1693          return base64_encode($this->data);
1694      }
1695  
1696  	function get_bin()
1697      {
1698          $bin = '';
1699          $len = strlen($this->data);
1700  
1701          for ($i = 0; $i < $len; ++$i)
1702          {
1703              $bin .= str_pad(decbin(ord($this->data[$i])), 8, '0', STR_PAD_LEFT);
1704          }
1705  
1706          return $bin;
1707      }
1708  
1709  	function get_all_set()
1710      {
1711          return array_keys(array_filter(str_split($this->get_bin())));
1712      }
1713  
1714  	function merge($bitfield)
1715      {
1716          $this->data = $this->data | $bitfield->get_blob();
1717      }
1718  }


Generated: Sun Feb 19 19:52:41 2017 Cross-referenced by PHPXref 0.7.1