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/inc/ -> functions_massmail.php (source)

   1  <?php
   2  /**
   3   * MyBB 1.8
   4   * Copyright 2014 MyBB Group, All Rights Reserved
   5   *
   6   * Website: http://www.mybb.com
   7   * License: http://www.mybb.com/about/license
   8   *
   9   */
  10  
  11  /**
  12   * Build the mass email SQL query for the specified conditions.
  13   *
  14   * @param array $conditions Array of conditions to match users against.
  15   * @return string The generated search SQL
  16   */
  17  function build_mass_mail_query($conditions)
  18  {
  19      global $db;
  20  
  21      if(!is_array($conditions))
  22      {
  23          return '';
  24      }
  25  
  26      $search_sql = 'u.allownotices=1';
  27  
  28      // List of valid LIKE search fields
  29      $user_like_fields = array("username", "email");
  30      foreach($user_like_fields as $search_field)
  31      {
  32          if($conditions[$search_field])
  33          {
  34              $search_sql .= " AND u.{$search_field} LIKE '%".$db->escape_string_like($conditions[$search_field])."%'";
  35          }
  36      }
  37  
  38      // LESS THAN or GREATER THAN
  39      $direction_fields = array("postnum");
  40      foreach($direction_fields as $search_field)
  41      {
  42          $direction_field = $search_field."_dir";
  43          if(!empty($conditions[$search_field]) && $conditions[$direction_field])
  44          {
  45              switch($conditions[$direction_field])
  46              {
  47                  case "greater_than":
  48                      $direction = ">";
  49                      break;
  50                  case "less_than":
  51                      $direction = "<";
  52                      break;
  53                  default:
  54                      $direction = "=";
  55              }
  56              $search_sql .= " AND u.{$search_field}{$direction}'".(int)$conditions[$search_field]."'";
  57          }
  58      }
  59  
  60      // Time-based search fields
  61      $time_fields = array("regdate", "lastactive");
  62      foreach($time_fields as $search_field)
  63      {
  64          $time_field = $search_field."_date";
  65          $direction_field = $search_field."_dir";
  66          if(!empty($conditions[$search_field]) && $conditions[$time_field] && $conditions[$direction_field])
  67          {
  68              switch($conditions[$time_field])
  69              {
  70                  case "hours":
  71                      $date = $conditions[$search_field]*60*60;
  72                      break;
  73                  case "days":
  74                      $date = $conditions[$search_field]*60*60*24;
  75                      break;
  76                  case "weeks":
  77                      $date = $conditions[$search_field]*60*60*24*7;
  78                      break;
  79                  case "months":
  80                      $date = $conditions[$search_field]*60*60*24*30;
  81                      break;
  82                  case "years":
  83                      $date = $conditions[$search_field]*60*60*24*365;
  84                      break;
  85                  default:
  86                      $date = $conditions[$search_field]*60*60*24;
  87              }
  88  
  89              switch($conditions[$direction_field])
  90              {
  91                  case "less_than":
  92                      $direction = ">";
  93                      break;
  94                  case "more_than":
  95                      $direction = "<";
  96                      break;
  97                  default:
  98                      $direction = "<";
  99              }
 100              $search_sql .= " AND u.{$search_field}{$direction}'".(TIME_NOW-$date)."'";
 101          }
 102      }
 103  
 104      // Usergroup based searching
 105      if(!empty($conditions['usergroup']))
 106      {
 107          if(!is_array($conditions['usergroup']))
 108          {
 109              $conditions['usergroup'] = array($conditions['usergroup']);
 110          }
 111  
 112          $conditions['usergroup'] = array_map('intval', $conditions['usergroup']);
 113  
 114          $additional_sql = '';
 115          foreach($conditions['usergroup'] as $usergroup)
 116          {
 117              switch($db->type)
 118              {
 119                  case "pgsql":
 120                  case "sqlite":
 121                      $additional_sql .= " OR ','||additionalgroups||',' LIKE '%,{$usergroup},%'";
 122                      break;
 123                  default:
 124                      $additional_sql .= " OR CONCAT(',',additionalgroups,',') LIKE '%,{$usergroup},%'";
 125              }
 126          }
 127          $search_sql .= " AND (u.usergroup IN (".implode(",", $conditions['usergroup']).") {$additional_sql})";
 128      }
 129  
 130      return $search_sql;
 131  }
 132  
 133  /**
 134   * Create a text based version of a HTML mass email.
 135   *
 136   * @param string $message The HTML version.
 137   * @return string The generated text based version.
 138   */
 139  function create_text_message($message)
 140  {
 141      // Cut out all current line breaks
 142      // Makes links CONTENT (link)
 143      $message = make_pretty_links($message);
 144      $message = str_replace(array("\r\n", "\n"), "\n", $message);
 145      $message = preg_replace("#</p>#i", "\n\n", $message);
 146      $message = preg_replace("#<br( \/?)>#i", "\n", $message);
 147      $message = preg_replace("#<p[^>]*?>#i", "", $message);
 148      $message = preg_replace("#<hr[^>]*?>\s*#i", "-----------\n", $message);
 149      $message = html_entity_decode($message);
 150      $message = str_replace("\t", "", $message);
 151      do
 152      {
 153          $message = str_replace("  ", " ", $message);
 154      }
 155      while(strpos($message, "  ") !== false);
 156  
 157      $search = array('@<script[^>]*?>.*?</script>@si',  // Strip out javascript
 158                     '@<style[^>]*?>.*?</style>@siU',    // Strip style tags properly
 159                     '@<title[^>]*?>.*?</title>@siU',    // Strip title tags
 160                     '@<[\/\!]*?[^<>]*?>@si',            // Strip out HTML tags
 161                     '@<![\s\S]*?--[ \t\n\r]*>@'        // Strip multi-line comments including CDATA
 162      );
 163      $message = preg_replace($search, '', $message);
 164      $message = preg_replace("#\n\n+#", "\n\n", $message);
 165      $message = preg_replace("#^\s+#is", "", $message);
 166      return $message;
 167  }
 168  
 169  /**
 170   * Generates friendly links for a text based version of a mass email from the HTML version.
 171   *
 172   * @param string $message_html The HTML version.
 173   * @return string The version with the friendly links and all <a> tags stripped.
 174   */
 175  function make_pretty_links($message_html)
 176  {
 177      do
 178      {
 179          $start = stripos($message_html, "<a");
 180          if($start === false)
 181          {
 182              break;
 183          }
 184          $end = stripos($message_html, "</a>", $start);
 185          if($end === false)
 186          {
 187              break;
 188          }
 189  
 190          $a_href = substr($message_html, $start, ($end-$start));
 191  
 192          preg_match("#href=\"?([^\"> ]+)\"?#i", $a_href, $href_matches);
 193          if(!$href_matches[1])
 194          {
 195              continue;
 196          }
 197          $link = $href_matches[1];
 198  
 199          $contents = strip_tags($a_href);
 200          if(!$contents)
 201          {
 202              preg_match("#alt=\"?([^\">]+)\"?#i", $a_href, $matches2);
 203              if($matches2[1])
 204              {
 205                  $contents = $matches2[1];
 206              }
 207              if(!$contents)
 208              {
 209                  preg_match("#title=\"?([^\">]+)\"?#i", $a_href, $matches2);
 210                  if($matches2[1])
 211                  {
 212                      $contents = $matches2[1];
 213                  }
 214              }
 215          }
 216  
 217          $replaced_link = $contents." ({$link}) ";
 218  
 219          $message_html = substr_replace($message_html, $replaced_link, $start, ($end-$start));
 220      } while(true);
 221      return $message_html;
 222  }


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