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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
9     $Id: emailer.php,v 1.15.2.34 2003/07/26 11:41:35 acydburn Exp $
11 ***************************************************************************/
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  ***************************************************************************/
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;
33         var $tpl_msg = array();
35         function emailer($use_smtp)
36         {
37                 $this->reset();
38                 $this->use_smtp = $use_smtp;
39                 $this->reply_to = $this->from = '';
40         }
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 = $this->extra_headers = '';
47         }
49         // Sets an email address to send to
50         function email_address($address)
51         {
52                 $this->addresses['to'] = trim($address);
53         }
55         function cc($address)
56         {
57                 $this->addresses['cc'][] = trim($address);
58         }
60         function bcc($address)
61         {
62                 $this->addresses['bcc'][] = trim($address);
63         }
65         function replyto($address)
66         {
67                 $this->reply_to = trim($address);
68         }
70         function from($address)
71         {
72                 $this->from = trim($address);
73         }
75         // set up subject for mail
76         function set_subject($subject = '')
77         {
78                 $this->subject = trim(preg_replace('#[\n\r]+#s', '', $subject));
79         }
81         // set up extra mail headers
82         function extra_headers($headers)
83         {
84                 $this->extra_headers .= trim($headers) . "\n";
85         }
87         function use_template($template_file, $template_lang = '')
88         {
89                 global $board_config, $phpbb_root_path;
91                 if (trim($template_file) == '')
92                 {
93                         message_die(GENERAL_ERROR, 'No template file set', '', __LINE__, __FILE__);
94                 }
96                 if (trim($template_lang) == '')
97                 {
98                         $template_lang = $board_config['default_lang'];
99                 }
101                 if (empty($this->tpl_msg[$template_lang . $template_file]))
102                 {
103                         $tpl_file = $phpbb_root_path . 'language/lang_' . $template_lang . '/email/' . $template_file . '.tpl';
105                         if (!@file_exists(@phpbb_realpath($tpl_file)))
106                         {
107                                 $tpl_file = $phpbb_root_path . 'language/lang_' . $board_config['default_lang'] . '/email/' . $template_file . '.tpl';
109                                 if (!@file_exists(@phpbb_realpath($tpl_file)))
110                                 {
111                                         message_die(GENERAL_ERROR, 'Could not find email template file :: ' . $template_file, '', __LINE__, __FILE__);
112                                 }
113                         }
115                         if (!($fd = @fopen($tpl_file, 'r')))
116                         {
117                                 message_die(GENERAL_ERROR, 'Failed opening template file :: ' . $tpl_file, '', __LINE__, __FILE__);
118                         }
120                         $this->tpl_msg[$template_lang . $template_file] = fread($fd, filesize($tpl_file));
121                         fclose($fd);
122                 }
124                 $this->msg = $this->tpl_msg[$template_lang . $template_file];
126                 return true;
127         }
129         // assign variables
130         function assign_vars($vars)
131         {
132                 $this->vars = (empty($this->vars)) ? $vars : $this->vars . $vars;
133         }
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;
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 . '", $this->msg);
144                 // Set vars
145                 reset ($this->vars);
146                 while (list($key, $val) = each($this->vars)) 
147                 {
148                         $$key = $val;
149                 }
151                 eval("\$this->msg = '$this->msg';");
153                 // Clear vars
154                 reset ($this->vars);
155                 while (list($key, $val) = each($this->vars)) 
156                 {
157                         unset($$key);
158                 }
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                         $drop_header .= '[\r\n]*?' . phpbb_preg_quote($match[1], '#');
168                 }
169                 else
170                 {
171                         $this->subject = (($this->subject != '') ? $this->subject : 'No Subject');
172                 }
174                 if (preg_match('#^(Charset:(.*?))$#m', $this->msg, $match))
175                 {
176                         $this->encoding = (trim($match[2]) != '') ? trim($match[2]) : trim($lang['ENCODING']);
177                         $drop_header .= '[\r\n]*?' . phpbb_preg_quote($match[1], '#');
178                 }
179                 else
180                 {
181                         $this->encoding = trim($lang['ENCODING']);
182                 }
184                 if ($drop_header != '')
185                 {
186                         $this->msg = trim(preg_replace('#' . $drop_header . '#s', '', $this->msg));
187                 }
189                 $to = $this->addresses['to'];
191                 $cc = (count($this->addresses['cc'])) ? implode(', ', $this->addresses['cc']) : '';
192                 $bcc = (count($this->addresses['bcc'])) ? implode(', ', $this->addresses['bcc']) : '';
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" : ''); 
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                         }
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 = ' ';
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                                 }
226                                 $board_config['sendmail_fix'] = 1;
227                                 $result = @mail($to, $this->subject, preg_replace("#(?<!\r)\n#s", "\n", $this->msg), $this->extra_headers);
228                         }
229                 }
231                 // Did it work?
232                 if (!$result)
233                 {
234                         message_die(GENERAL_ERROR, 'Failed sending email :: ' . (($this->use_smtp) ? 'SMTP' : 'PHP') . ' :: ' . $result, '', __LINE__, __FILE__);
235                 }
237                 return true;
238         }
240         // Encodes the given string for proper display for this encoding ... nabbed 
241         // from php.net and modified. There is an alternative encoding method which 
242         // may produce lesd output but it's questionable as to its worth in this 
243         // scenario IMO
244         function encode($str)
245         {
246                 if ($this->encoding == '')
247                 {
248                         return $str;
249                 }
251                 // define start delimimter, end delimiter and spacer
252                 $end = "?=";
253                 $start = "=?$this->encoding?B?";
254                 $spacer = "$end\r\n $start";
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;
260                 // encode the string and split it into chunks with spacers after each chunk
261                 $str = chunk_split(base64_encode($str), $length, $spacer);
263                 // remove trailing spacer and add start and end delimiters
264                 $str = preg_replace('#' . phpbb_preg_quote($spacer, '#') . '$#', '', $str);
266                 return $start . $str . $end;
267         }
269         //
270         // Attach files via MIME.
271         //
272         function attachFile($filename, $mimetype = "application/octet-stream", $szFromAddress, $szFilenameToDisplay)
273         {
274                 global $lang;
275                 $mime_boundary = "--==================_846811060==_";
277                 $this->msg = '--' . $mime_boundary . "\nContent-Type: text/plain;\n\tcharset=\"" . $lang['ENCODING'] . "\"\n\n" . $this->msg;
279                 if ($mime_filename)
280                 {
281                         $filename = $mime_filename;
282                         $encoded = $this->encode_file($filename);
283                 }
285                 $fd = fopen($filename, "r");
286                 $contents = fread($fd, filesize($filename));
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";
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                 }
304                 $this->mimeOut .= $contents."\n";
305                 $this->mimeOut .= "--" . $mime_boundary . "--" . "\n";
307                 return $out;
308                 // added -- to notify email client attachment is done
309         }
311         function getMimeHeaders($filename, $mime_filename="")
312         {
313                 $mime_boundary = "--==================_846811060==_";
315                 if ($mime_filename)
316                 {
317                         $filename = $mime_filename;
318                 }
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.";
325                 return $out;
326         }
328         //
329    // Split string by RFC 2045 semantics (76 chars per line, end with \r\n).
330         //
331         function myChunkSplit($str)
332         {
333                 $stmp = $str;
334                 $len = strlen($stmp);
335                 $out = "";
337                 while ($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 $out;
353         }
355         //
356    // Split the specified file up into a string and return it
357         //
358         function encode_file($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                 }
368                 return $encoded;
369         }
371 } // class emailer
373 ?>