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   1  <?php
   2  /***************************************************************************
   3                                  emailer.php
   4                               -------------------
   5      begin                : Sunday Aug. 12, 2001
   6      copyright            : (C) 2001 The phpBB Group
   7      email                : support@phpbb.com
   8  
   9      $Id: emailer.php 5261 2005-10-05 17:42:04Z grahamje $
  10  
  11  ***************************************************************************/
  12  
  13  /***************************************************************************
  14   *
  15   *   This program is free software; you can redistribute it and/or modify
  16   *   it under the terms of the GNU General Public License as published by
  17   *   the Free Software Foundation; either version 2 of the License, or
  18   *   (at your option) any later version.
  19   *
  20   ***************************************************************************/
  21  
  22  //
  23  // The emailer class has support for attaching files, that isn't implemented
  24  // in the 2.0 release but we can probable find some way of using it in a future
  25  // release
  26  //
  27  class emailer
  28  {
  29      var $msg, $subject, $extra_headers;
  30      var $addresses, $reply_to, $from;
  31      var $use_smtp;
  32  
  33      var $tpl_msg = array();
  34  
  35  	function emailer($use_smtp)
  36      {
  37          $this->reset();
  38          $this->use_smtp = $use_smtp;
  39          $this->reply_to = $this->from = '';
  40      }
  41  
  42      // Resets all the data (address, template file, etc etc to default
  43  	function reset()
  44      {
  45          $this->addresses = array();
  46          $this->vars = $this->msg = $this->extra_headers = '';
  47      }
  48  
  49      // Sets an email address to send to
  50  	function email_address($address)
  51      {
  52          $this->addresses['to'] = trim($address);
  53      }
  54  
  55      function cc($address)
  56      {
  57          $this->addresses['cc'][] = trim($address);
  58      }
  59  
  60  	function bcc($address)
  61      {
  62          $this->addresses['bcc'][] = trim($address);
  63      }
  64  
  65  	function replyto($address)
  66      {
  67          $this->reply_to = trim($address);
  68      }
  69  
  70  	function from($address)
  71      {
  72          $this->from = trim($address);
  73      }
  74  
  75      // set up subject for mail
  76  	function set_subject($subject = '')
  77      {
  78          $this->subject = trim(preg_replace('#[\n\r]+#s', '', $subject));
  79      }
  80  
  81      // set up extra mail headers
  82  	function extra_headers($headers)
  83      {
  84          $this->extra_headers .= trim($headers) . "\n";
  85      }
  86  
  87  	function use_template($template_file, $template_lang = '')
  88      {
  89          global $board_config, $phpbb_root_path;
  90  
  91          if (trim($template_file) == '')
  92          {
  93              message_die(GENERAL_ERROR, 'No template file set', '', __LINE__, __FILE__);
  94          }
  95  
  96          if (trim($template_lang) == '')
  97          {
  98              $template_lang = $board_config['default_lang'];
  99          }
 100  
 101          if (empty($this->tpl_msg[$template_lang . $template_file]))
 102          {
 103              $tpl_file = $phpbb_root_path . 'language/lang_' . $template_lang . '/email/' . $template_file . '.tpl';
 104  
 105              if (!@file_exists(@phpbb_realpath($tpl_file)))
 106              {
 107                  $tpl_file = $phpbb_root_path . 'language/lang_' . $board_config['default_lang'] . '/email/' . $template_file . '.tpl';
 108  
 109                  if (!@file_exists(@phpbb_realpath($tpl_file)))
 110                  {
 111                      message_die(GENERAL_ERROR, 'Could not find email template file :: ' . $template_file, '', __LINE__, __FILE__);
 112                  }
 113              }
 114  
 115              if (!($fd = @fopen($tpl_file, 'r')))
 116              {
 117                  message_die(GENERAL_ERROR, 'Failed opening template file :: ' . $tpl_file, '', __LINE__, __FILE__);
 118              }
 119  
 120              $this->tpl_msg[$template_lang . $template_file] = fread($fd, filesize($tpl_file));
 121              fclose($fd);
 122          }
 123  
 124          $this->msg = $this->tpl_msg[$template_lang . $template_file];
 125  
 126          return true;
 127      }
 128  
 129      // assign variables
 130  	function assign_vars($vars)
 131      {
 132          $this->vars = (empty($this->vars)) ? $vars : $this->vars . $vars;
 133      }
 134  
 135      // Send the mail out to the recipients set previously in var $this->address
 136  	function send()
 137      {
 138          global $board_config, $lang, $phpEx, $phpbb_root_path, $db;
 139  
 140          // Escape all quotes, else the eval will fail.
 141          $this->msg = str_replace ("'", "\'", $this->msg);
 142          $this->msg = preg_replace('#\{([a-z0-9\-_]*?)\}#is', "' . $\\1 . '", $this->msg);
 143  
 144          // Set vars
 145          reset ($this->vars);
 146          while (list($key, $val) = each($this->vars)) 
 147          {
 148              $$key = $val;
 149          }
 150  
 151          eval("\$this->msg = '$this->msg';");
 152  
 153          // Clear vars
 154          reset ($this->vars);
 155          while (list($key, $val) = each($this->vars)) 
 156          {
 157              unset($$key);
 158          }
 159  
 160          // We now try and pull a subject from the email body ... if it exists,
 161          // do this here because the subject may contain a variable
 162          $drop_header = '';
 163          $match = array();
 164          if (preg_match('#^(Subject:(.*?))$#m', $this->msg, $match))
 165          {
 166              $this->subject = (trim($match[2]) != '') ? trim($match[2]) : (($this->subject != '') ? $this->subject : 'No Subject');
 167              $drop_header .= '[\r\n]*?' . preg_quote($match[1], '#');
 168          }
 169          else
 170          {
 171              $this->subject = (($this->subject != '') ? $this->subject : 'No Subject');
 172          }
 173  
 174          if (preg_match('#^(Charset:(.*?))$#m', $this->msg, $match))
 175          {
 176              $this->encoding = (trim($match[2]) != '') ? trim($match[2]) : trim($lang['ENCODING']);
 177              $drop_header .= '[\r\n]*?' . preg_quote($match[1], '#');
 178          }
 179          else
 180          {
 181              $this->encoding = trim($lang['ENCODING']);
 182          }
 183  
 184          if ($drop_header != '')
 185          {
 186              $this->msg = trim(preg_replace('#' . $drop_header . '#s', '', $this->msg));
 187          }
 188  
 189          $to = $this->addresses['to'];
 190  
 191          $cc = (count($this->addresses['cc'])) ? implode(', ', $this->addresses['cc']) : '';
 192          $bcc = (count($this->addresses['bcc'])) ? implode(', ', $this->addresses['bcc']) : '';
 193  
 194          // Build header
 195          $this->extra_headers = (($this->reply_to != '') ? "Reply-to: $this->reply_to\n" : '') . (($this->from != '') ? "From: $this->from\n" : "From: " . $board_config['board_email'] . "\n") . "Return-Path: " . $board_config['board_email'] . "\nMessage-ID: <" . md5(uniqid(time())) . "@" . $board_config['server_name'] . ">\nMIME-Version: 1.0\nContent-type: text/plain; charset=" . $this->encoding . "\nContent-transfer-encoding: 8bit\nDate: " . date('r', time()) . "\nX-Priority: 3\nX-MSMail-Priority: Normal\nX-Mailer: PHP\nX-MimeOLE: Produced By phpBB2\n" . $this->extra_headers . (($cc != '') ? "Cc: $cc\n" : '')  . (($bcc != '') ? "Bcc: $bcc\n" : ''); 
 196  
 197          // Send message ... removed $this->encode() from subject for time being
 198          if ( $this->use_smtp )
 199          {
 200              if ( !defined('SMTP_INCLUDED') ) 
 201              {
 202                  include($phpbb_root_path . 'includes/smtp.' . $phpEx);
 203              }
 204  
 205              $result = smtpmail($to, $this->subject, $this->msg, $this->extra_headers);
 206          }
 207          else
 208          {
 209              $empty_to_header = ($to == '') ? TRUE : FALSE;
 210              $to = ($to == '') ? (($board_config['sendmail_fix']) ? ' ' : 'Undisclosed-recipients:;') : $to;
 211      
 212              $result = @mail($to, $this->subject, preg_replace("#(?<!\r)\n#s", "\n", $this->msg), $this->extra_headers);
 213              
 214              if (!$result && !$board_config['sendmail_fix'] && $empty_to_header)
 215              {
 216                  $to = ' ';
 217  
 218                  $sql = "UPDATE " . CONFIG_TABLE . " 
 219                      SET config_value = '1'
 220                      WHERE config_name = 'sendmail_fix'";
 221                  if (!$db->sql_query($sql))
 222                  {
 223                      message_die(GENERAL_ERROR, 'Unable to update config table', '', __LINE__, __FILE__, $sql);
 224                  }
 225  
 226                  $board_config['sendmail_fix'] = 1;
 227                  $result = @mail($to, $this->subject, preg_replace("#(?<!\r)\n#s", "\n", $this->msg), $this->extra_headers);
 228              }
 229          }
 230  
 231          // Did it work?
 232          if (!$result)
 233          {
 234              message_die(GENERAL_ERROR, 'Failed sending email :: ' . (($this->use_smtp) ? 'SMTP' : 'PHP') . ' :: ' . $result, '', __LINE__, __FILE__);
 235          }
 236  
 237          return true;
 238      }
 239  
 240      // Encodes the given string for proper display for this encoding ... nabbed 
 241      // from php.net and modified. There is an alternative encoding method which 
 242      // may produce lesd output but it's questionable as to its worth in this 
 243      // scenario IMO
 244  	function encode($str)
 245      {
 246          if ($this->encoding == '')
 247          {
 248              return $str;
 249          }
 250  
 251          // define start delimimter, end delimiter and spacer
 252          $end = "?=";
 253          $start = "=?$this->encoding?B?";
 254          $spacer = "$end\r\n $start";
 255  
 256          // determine length of encoded text within chunks and ensure length is even
 257          $length = 75 - strlen($start) - strlen($end);
 258          $length = floor($length / 2) * 2;
 259  
 260          // encode the string and split it into chunks with spacers after each chunk
 261          $str = chunk_split(base64_encode($str), $length, $spacer);
 262  
 263          // remove trailing spacer and add start and end delimiters
 264          $str = preg_replace('#' . preg_quote($spacer, '#') . '$#', '', $str);
 265  
 266          return $start . $str . $end;
 267      }
 268  
 269      //
 270      // Attach files via MIME.
 271      //
 272  	function attachFile($filename, $mimetype = "application/octet-stream", $szFromAddress, $szFilenameToDisplay)
 273      {
 274          global $lang;
 275          $mime_boundary = "--==================_846811060==_";
 276  
 277          $this->msg = '--' . $mime_boundary . "\nContent-Type: text/plain;\n\tcharset=\"" . $lang['ENCODING'] . "\"\n\n" . $this->msg;
 278  
 279          if ($mime_filename)
 280          {
 281              $filename = $mime_filename;
 282              $encoded = $this->encode_file($filename);
 283          }
 284  
 285          $fd = fopen($filename, "r");
 286          $contents = fread($fd, filesize($filename));
 287  
 288          $this->mimeOut = "--" . $mime_boundary . "\n";
 289          $this->mimeOut .= "Content-Type: " . $mimetype . ";\n\tname=\"$szFilenameToDisplay\"\n";
 290          $this->mimeOut .= "Content-Transfer-Encoding: quoted-printable\n";
 291          $this->mimeOut .= "Content-Disposition: attachment;\n\tfilename=\"$szFilenameToDisplay\"\n\n";
 292  
 293          if ( $mimetype == "message/rfc822" )
 294          {
 295              $this->mimeOut .= "From: ".$szFromAddress."\n";
 296              $this->mimeOut .= "To: ".$this->emailAddress."\n";
 297              $this->mimeOut .= "Date: ".date("D, d M Y H:i:s") . " UT\n";
 298              $this->mimeOut .= "Reply-To:".$szFromAddress."\n";
 299              $this->mimeOut .= "Subject: ".$this->mailSubject."\n";
 300              $this->mimeOut .= "X-Mailer: PHP/".phpversion()."\n";
 301              $this->mimeOut .= "MIME-Version: 1.0\n";
 302          }
 303  
 304          $this->mimeOut .= $contents."\n";
 305          $this->mimeOut .= "--" . $mime_boundary . "--" . "\n";
 306  
 307          return $out;
 308          // added -- to notify email client attachment is done
 309      }
 310  
 311  	function getMimeHeaders($filename, $mime_filename="")
 312      {
 313          $mime_boundary = "--==================_846811060==_";
 314  
 315          if ($mime_filename)
 316          {
 317              $filename = $mime_filename;
 318          }
 319  
 320          $out = "MIME-Version: 1.0\n";
 321          $out .= "Content-Type: multipart/mixed;\n\tboundary=\"$mime_boundary\"\n\n";
 322          $out .= "This message is in MIME format. Since your mail reader does not understand\n";
 323          $out .= "this format, some or all of this message may not be legible.";
 324  
 325          return $out;
 326      }
 327  
 328      //
 329     // Split string by RFC 2045 semantics (76 chars per line, end with \r\n).
 330      //
 331  	function myChunkSplit($str)
 332      {
 333          $stmp = $str;
 334          $len = strlen($stmp);
 335          $out = "";
 336  
 337          while ($len > 0)
 338          {
 339              if ($len >= 76)
 340              {
 341                  $out .= substr($stmp, 0, 76) . "\r\n";
 342                  $stmp = substr($stmp, 76);
 343                  $len = $len - 76;
 344              }
 345              else
 346              {
 347                  $out .= $stmp . "\r\n";
 348                  $stmp = "";
 349                  $len = 0;
 350              }
 351          }
 352          return $out;
 353      }
 354  
 355      //
 356     // Split the specified file up into a string and return it
 357      //
 358  	function encode_file($sourcefile)
 359      {
 360          if (is_readable(phpbb_realpath($sourcefile)))
 361          {
 362              $fd = fopen($sourcefile, "r");
 363              $contents = fread($fd, filesize($sourcefile));
 364            $encoded = $this->myChunkSplit(base64_encode($contents));
 365            fclose($fd);
 366          }
 367  
 368          return $encoded;
 369      }
 370  
 371  } // class emailer
 372  
 373  ?>