Correct value of undefined hostname
[squirrelmail.git] / class / deliver / Deliver.class.php
CommitLineData
4960ec8e 1<?php
4b4abf93 2
69298c28 3/**
4 * Deliver.class.php
5 *
69298c28 6 * This contains all the functions needed to send messages through
7 * a delivery backend.
8 *
4b4abf93 9 * @author Marc Groot Koerkamp
4b5049de 10 * @copyright &copy; 1999-2007 The SquirrelMail Project Team
4b4abf93 11 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
883d9cd3 12 * @version $Id$
72b004e6 13 * @package squirrelmail
69298c28 14 */
15
72b004e6 16/**
17 * Deliver Class - called to actually deliver the message
18 *
19 * This class is called by compose.php and other code that needs
20 * to send messages. All delivery functionality should be centralized
21 * in this class.
22 *
23 * Do not place UI code in this class, as UI code should be placed in templates
24 * going forward.
25 *
26 * @author Marc Groot Koerkamp
27 * @package squirrelmail
28 */
4960ec8e 29class Deliver {
30
72b004e6 31 /**
b67d61ee 32 * Most recently calculated Message-ID
33 * External code should NEVER access this directly!
34 * @var string
35 */
36 var $message_id;
37
38 /**
72b004e6 39 * function mail - send the message parts to the SMTP stream
40 *
0fdb0aa1 41 * @param Message $message Message object to send
42 * @param resource $stream Handle to the SMTP stream
e2ccf284 43 * (when FALSE, nothing will be
44 * written to the stream; this can
45 * be used to determine the actual
46 * number of bytes that will be
47 * written to the stream)
0fdb0aa1 48 * @param string $reply_id Identifies message being replied to
49 * (OPTIONAL; caller should ONLY specify
50 * a value for this when the message
51 * being sent is a reply)
52 * @param string $reply_ent_id Identifies message being replied to
53 * in the case it was an embedded/attached
54 * message inside another (OPTIONAL; caller
55 * should ONLY specify a value for this
56 * when the message being sent is a reply)
e2ccf284 57 * @param mixed $extra Any implementation-specific variables
58 * can be passed in here and used in
59 * an overloaded version of this method
60 * if needed.
72b004e6 61 *
b67d61ee 62 * @return array An array containing at least these elements in this order:
63 * - The number of bytes written (or that would have been
64 * written) to the output stream
65 * - The message ID (WARNING: if $stream is FALSE, this
66 * may not be supplied, or may not be accurate)
67 *
72b004e6 68 */
e2ccf284 69 function mail($message, $stream=false, $reply_id=0, $reply_ent_id=0,
70 $extra=NULL) {
71
78f39e78 72 $rfc822_header = $message->rfc822_header;
73 if (count($message->entities)) {
74 $boundary = $this->mimeBoundary();
75 $rfc822_header->content_type->properties['boundary']='"'.$boundary.'"';
76 } else {
77 $boundary='';
78 }
79 $raw_length = 0;
0fdb0aa1 80
81
82 // calculate reply header if needed
83 //
84 if ($reply_id) {
85 global $imapConnection, $username, $imapServerAddress,
86 $imapPort, $mailbox;
e2ccf284 87
88 if (!is_resource($imapConnection))
0fdb0aa1 89 $imapConnection = sqimap_login($username, FALSE,
90 $imapServerAddress, $imapPort, 0);
91
92 sqimap_mailbox_select($imapConnection, $mailbox);
93 $reply_message = sqimap_get_message($imapConnection, $reply_id, $mailbox);
94
95 if ($reply_ent_id) {
96 /* redefine the messsage in case of message/rfc822 */
97 $reply_message = $message->getEntity($reply_ent_id);
98 /* message is an entity which contains the envelope and type0=message
99 * and type1=rfc822. The actual entities are childs from
100 * $reply_message->entities[0]. That's where the encoding and is located
101 */
102
103 $orig_header = $reply_message->rfc822_header; /* here is the envelope located */
104
105 } else {
106 $orig_header = $reply_message->rfc822_header;
107 }
08e33475 108 $message->reply_rfc822_header = $orig_header;
0fdb0aa1 109 }
0fdb0aa1 110
111
72b004e6 112 $reply_rfc822_header = (isset($message->reply_rfc822_header)
78f39e78 113 ? $message->reply_rfc822_header : '');
114 $header = $this->prepareRFC822_Header($rfc822_header, $reply_rfc822_header, $raw_length);
75b14a70 115
e2ccf284 116 $this->send_mail($message, $header, $boundary, $stream, $raw_length, $extra);
117
b67d61ee 118 return array($raw_length, $this->message_id);
e2ccf284 119 }
120
121 /**
122 * function send_mail - send the message parts to the IMAP stream
123 *
124 * @param Message $message Message object to send
125 * @param string $header Headers ready to send
126 * @param string $boundary Message parts boundary
127 * @param resource $stream Handle to the SMTP stream
128 * (when FALSE, nothing will be
129 * written to the stream; this can
130 * be used to determine the actual
131 * number of bytes that will be
132 * written to the stream)
133 * @param int &$raw_length The number of bytes written (or that
134 * would have been written) to the
135 * output stream - NOTE that this is
136 * passed by reference
137 * @param mixed $extra Any implementation-specific variables
138 * can be passed in here and used in
139 * an overloaded version of this method
140 * if needed.
141 *
142 * @return void
143 *
144 */
145 function send_mail($message, $header, $boundary, $stream=false,
146 &$raw_length, $extra=NULL) {
147
148
78f39e78 149 if ($stream) {
59387d1c 150 $this->preWriteToStream($header);
151 $this->writeToStream($stream, $header);
78f39e78 152 }
153 $this->writeBody($message, $stream, $raw_length, $boundary);
3b53d87f 154 }
78f39e78 155
72b004e6 156 /**
157 * function writeBody - generate and write the mime boundaries around each part to the stream
158 *
159 * Recursively formats and writes the MIME boundaries of the $message
160 * to the output stream.
161 *
162 * @param Message $message Message object to transform
163 * @param resource $stream SMTP output stream
e2ccf284 164 * (when FALSE, nothing will be
165 * written to the stream; this can
166 * be used to determine the actual
167 * number of bytes that will be
168 * written to the stream)
72b004e6 169 * @param integer &$length_raw raw length of the message (part)
170 * as returned by mail fn
171 * @param string $boundary custom boundary to call, usually for subparts
172 *
3a70ee56 173 * @return void
72b004e6 174 */
3b53d87f 175 function writeBody($message, $stream, &$length_raw, $boundary='') {
caf6a9a4 176 // calculate boundary in case of multidimensional mime structures
177 if ($boundary && $message->entity_id && count($message->entities)) {
178 if (strpos($boundary,'_part_')) {
179 $boundary = substr($boundary,0,strpos($boundary,'_part_'));
ba86230e 180
593d083d 181 // the next four lines use strrev to reverse any nested boundaries
182 // because RFC 2046 (5.1.1) says that if a line starts with the outer
183 // boundary string (doesn't matter what the line ends with), that
184 // can be considered a match for the outer boundary; thus the nested
185 // boundary needs to be unique from the outer one
ba86230e 186 //
187 } else if (strpos($boundary,'_trap_')) {
188 $boundary = substr(strrev($boundary),0,strpos(strrev($boundary),'_part_'));
caf6a9a4 189 }
ba86230e 190 $boundary_new = strrev($boundary . '_part_'.$message->entity_id);
caf6a9a4 191 } else {
192 $boundary_new = $boundary;
193 }
1274f430 194 if ($boundary && !$message->rfc822_header) {
78f39e78 195 $s = '--'.$boundary."\r\n";
caf6a9a4 196 $s .= $this->prepareMIME_Header($message, $boundary_new);
78f39e78 197 $length_raw += strlen($s);
198 if ($stream) {
3b53d87f 199 $this->preWriteToStream($s);
78f39e78 200 $this->writeToStream($stream, $s);
201 }
202 }
203 $this->writeBodyPart($message, $stream, $length_raw);
72b004e6 204
78f39e78 205 $last = false;
206 for ($i=0, $entCount=count($message->entities);$i<$entCount;$i++) {
caf6a9a4 207 $msg = $this->writeBody($message->entities[$i], $stream, $length_raw, $boundary_new);
78f39e78 208 if ($i == $entCount-1) $last = true;
209 }
1274f430 210 if ($boundary && $last) {
dcc5c913 211 $s = "--".$boundary_new."--\r\n\r\n";
78f39e78 212 $length_raw += strlen($s);
213 if ($stream) {
3b53d87f 214 $this->preWriteToStream($s);
78f39e78 215 $this->writeToStream($stream, $s);
216 }
217 }
3b53d87f 218 }
219
72b004e6 220 /**
221 * function writeBodyPart - write each individual mimepart
222 *
223 * Recursively called by WriteBody to write each mime part to the SMTP stream
224 *
225 * @param Message $message Message object to transform
226 * @param resource $stream SMTP output stream
e2ccf284 227 * (when FALSE, nothing will be
228 * written to the stream; this can
229 * be used to determine the actual
230 * number of bytes that will be
231 * written to the stream)
72b004e6 232 * @param integer &$length length of the message part
233 * as returned by mail fn
234 *
3a70ee56 235 * @return void
72b004e6 236 */
3b53d87f 237 function writeBodyPart($message, $stream, &$length) {
1274f430 238 if ($message->mime_header) {
78f39e78 239 $type0 = $message->mime_header->type0;
240 } else {
241 $type0 = $message->rfc822_header->content_type->type0;
242 }
243
244 $body_part_trailing = $last = '';
245 switch ($type0)
246 {
247 case 'text':
248 case 'message':
249 if ($message->body_part) {
250 $body_part = $message->body_part;
4cf85ddd 251 // remove NUL characters
252 $body_part = str_replace("\0",'',$body_part);
78f39e78 253 $length += $this->clean_crlf($body_part);
254 if ($stream) {
72b004e6 255 $this->preWriteToStream($body_part);
78f39e78 256 $this->writeToStream($stream, $body_part);
257 }
258 $last = $body_part;
259 } elseif ($message->att_local_name) {
1f270d3c 260 global $username, $attachment_dir;
261 $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
78f39e78 262 $filename = $message->att_local_name;
1f270d3c 263 $file = fopen ($hashed_attachment_dir . '/' . $filename, 'rb');
78f39e78 264 while ($body_part = fgets($file, 4096)) {
257dea3f 265 // remove NUL characters
266 $body_part = str_replace("\0",'',$body_part);
78f39e78 267 $length += $this->clean_crlf($body_part);
268 if ($stream) {
269 $this->preWriteToStream($body_part);
270 $this->writeToStream($stream, $body_part);
271 }
272 $last = $body_part;
273 }
274 fclose($file);
275 }
276 break;
277 default:
278 if ($message->body_part) {
279 $body_part = $message->body_part;
257dea3f 280 // remove NUL characters
281 $body_part = str_replace("\0",'',$body_part);
78f39e78 282 $length += $this->clean_crlf($body_part);
283 if ($stream) {
284 $this->writeToStream($stream, $body_part);
285 }
286 } elseif ($message->att_local_name) {
1f270d3c 287 global $username, $attachment_dir;
288 $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
78f39e78 289 $filename = $message->att_local_name;
1f270d3c 290 $file = fopen ($hashed_attachment_dir . '/' . $filename, 'rb');
78f39e78 291 while ($tmp = fread($file, 570)) {
27ff4efb 292 $body_part = chunk_split(base64_encode($tmp));
293 // Up to 4.3.10 chunk_split always appends a newline,
294 // while in 4.3.11 it doesn't if the string to split
295 // is shorter than the chunk length.
296 if( substr($body_part, -1 , 1 ) != "\n" )
297 $body_part .= "\n";
78f39e78 298 $length += $this->clean_crlf($body_part);
299 if ($stream) {
300 $this->writeToStream($stream, $body_part);
301 }
302 }
303 fclose($file);
3b53d87f 304 }
78f39e78 305 break;
306 }
307 $body_part_trailing = '';
308 if ($last && substr($last,-1) != "\n") {
309 $body_part_trailing = "\r\n";
310 }
311 if ($body_part_trailing) {
312 $length += strlen($body_part_trailing);
313 if ($stream) {
314 $this->preWriteToStream($body_part_trailing);
315 $this->writeToStream($stream, $body_part_trailing);
316 }
317 }
3b53d87f 318 }
78f39e78 319
72b004e6 320 /**
321 * function clean_crlf - change linefeeds and newlines to legal characters
322 *
323 * The SMTP format only allows CRLF as line terminators.
324 * This function replaces illegal teminators with the correct terminator.
325 *
326 * @param string &$s string to clean linefeeds on
327 *
3a70ee56 328 * @return void
72b004e6 329 */
69298c28 330 function clean_crlf(&$s) {
3b53d87f 331 $s = str_replace("\r\n", "\n", $s);
332 $s = str_replace("\r", "\n", $s);
333 $s = str_replace("\n", "\r\n", $s);
78f39e78 334 return strlen($s);
3b53d87f 335 }
78f39e78 336
72b004e6 337 /**
338 * function strip_crlf - strip linefeeds and newlines from a string
339 *
340 * The SMTP format only allows CRLF as line terminators.
341 * This function strips all line terminators from the string.
342 *
343 * @param string &$s string to clean linefeeds on
344 *
3a70ee56 345 * @return void
72b004e6 346 */
e4f9307a 347 function strip_crlf(&$s) {
348 $s = str_replace("\r\n ", '', $s);
78f39e78 349 $s = str_replace("\r", '', $s);
350 $s = str_replace("\n", '', $s);
e4f9307a 351 }
3b53d87f 352
72b004e6 353 /**
354 * function preWriteToStream - reserved for extended functionality
355 *
356 * This function is not yet implemented.
357 * Reserved for extended functionality.
358 *
359 * @param string &$s string to operate on
360 *
3a70ee56 361 * @return void
72b004e6 362 */
69298c28 363 function preWriteToStream(&$s) {
3b53d87f 364 }
78f39e78 365
72b004e6 366 /**
367 * function writeToStream - write data to the SMTP stream
368 *
369 * @param resource $stream SMTP output stream
370 * @param string $data string with data to send to the SMTP stream
371 *
3a70ee56 372 * @return void
72b004e6 373 */
3b53d87f 374 function writeToStream($stream, $data) {
78f39e78 375 fputs($stream, $data);
3b53d87f 376 }
78f39e78 377
72b004e6 378 /**
379 * function initStream - reserved for extended functionality
380 *
381 * This function is not yet implemented.
382 * Reserved for extended functionality.
383 *
384 * @param Message $message Message object
385 * @param string $host host name or IP to connect to
386 * @param string $user username to log into the SMTP server with
387 * @param string $pass password to log into the SMTP server with
388 * @param integer $length
389 *
3a70ee56 390 * @return handle $stream file handle resource to SMTP stream
72b004e6 391 */
3b53d87f 392 function initStream($message, $length=0, $host='', $port='', $user='', $pass='') {
78f39e78 393 return $stream;
3b53d87f 394 }
72b004e6 395
396 /**
397 * function getBCC - reserved for extended functionality
398 *
399 * This function is not yet implemented.
400 * Reserved for extended functionality.
401 *
402 */
403 function getBCC() {
78f39e78 404 return false;
59387d1c 405 }
3b53d87f 406
72b004e6 407 /**
408 * function prepareMIME_Header - creates the mime header
409 *
410 * @param Message $message Message object to act on
411 * @param string $boundary mime boundary from fn MimeBoundary
412 *
3a70ee56 413 * @return string $header properly formatted mime header
72b004e6 414 */
3b53d87f 415 function prepareMIME_Header($message, $boundary) {
78f39e78 416 $mime_header = $message->mime_header;
417 $rn="\r\n";
418 $header = array();
1274f430 419
78f39e78 420 $contenttype = 'Content-Type: '. $mime_header->type0 .'/'.
421 $mime_header->type1;
422 if (count($message->entities)) {
fcce1b3c 423 $contenttype .= ';' . 'boundary="'.$boundary.'"';
78f39e78 424 }
425 if (isset($mime_header->parameters['name'])) {
426 $contenttype .= '; name="'.
427 encodeHeader($mime_header->parameters['name']). '"';
428 }
429 if (isset($mime_header->parameters['charset'])) {
430 $charset = $mime_header->parameters['charset'];
431 $contenttype .= '; charset="'.
432 encodeHeader($charset). '"';
433 }
1274f430 434
78f39e78 435 $header[] = $contenttype . $rn;
436 if ($mime_header->description) {
eb72e151 437 $header[] = 'Content-Description: ' . $mime_header->description . $rn;
78f39e78 438 }
439 if ($mime_header->encoding) {
eb72e151 440 $header[] = 'Content-Transfer-Encoding: ' . $mime_header->encoding . $rn;
78f39e78 441 } else {
442 if ($mime_header->type0 == 'text' || $mime_header->type0 == 'message') {
eb72e151 443 $header[] = 'Content-Transfer-Encoding: 8bit' . $rn;
78f39e78 444 } else {
eb72e151 445 $header[] = 'Content-Transfer-Encoding: base64' . $rn;
78f39e78 446 }
447 }
448 if ($mime_header->id) {
eb72e151 449 $header[] = 'Content-ID: ' . $mime_header->id . $rn;
78f39e78 450 }
451 if ($mime_header->disposition) {
452 $disposition = $mime_header->disposition;
453 $contentdisp = 'Content-Disposition: ' . $disposition->name;
454 if ($disposition->getProperty('filename')) {
455 $contentdisp .= '; filename="'.
456 encodeHeader($disposition->getProperty('filename')). '"';
457 }
72b004e6 458 $header[] = $contentdisp . $rn;
78f39e78 459 }
460 if ($mime_header->md5) {
eb72e151 461 $header[] = 'Content-MD5: ' . $mime_header->md5 . $rn;
78f39e78 462 }
463 if ($mime_header->language) {
eb72e151 464 $header[] = 'Content-Language: ' . $mime_header->language . $rn;
78f39e78 465 }
4960ec8e 466
78f39e78 467 $cnt = count($header);
468 $hdr_s = '';
469 for ($i = 0 ; $i < $cnt ; $i++) {
470 $hdr_s .= $this->foldLine($header[$i], 78,str_pad('',4));
471 }
472 $header = $hdr_s;
473 $header .= $rn; /* One blank line to separate mimeheader and body-entity */
474 return $header;
475 }
4960ec8e 476
72b004e6 477 /**
478 * function prepareRFC822_Header - prepares the RFC822 header string from Rfc822Header object(s)
479 *
480 * This function takes the Rfc822Header object(s) and formats them
481 * into the RFC822Header string to send to the SMTP server as part
482 * of the SMTP message.
483 *
484 * @param Rfc822Header $rfc822_header
485 * @param Rfc822Header $reply_rfc822_header
486 * @param integer &$raw_length length of the message
487 *
3a70ee56 488 * @return string $header
72b004e6 489 */
75b14a70 490 function prepareRFC822_Header($rfc822_header, $reply_rfc822_header, &$raw_length) {
b37e457f 491 global $domain, $username, $encode_header_key,
e930c9fe 492 $edit_identity, $hide_auth_header;
60a46e65 493
49c7f411 494 /* if server var SERVER_NAME not available, or contains
495 ":" (e.g. IPv6) which is illegal in a Message-ID, use $domain */
496 if(!sqGetGlobalVar('SERVER_NAME', $SERVER_NAME, SQ_SERVER) ||
497 strpos($SERVER_NAME,':') !== FALSE) {
60a46e65 498 $SERVER_NAME = $domain;
78f39e78 499 }
60a46e65 500
78f39e78 501 sqGetGlobalVar('REMOTE_ADDR', $REMOTE_ADDR, SQ_SERVER);
502 sqGetGlobalVar('REMOTE_PORT', $REMOTE_PORT, SQ_SERVER);
503 sqGetGlobalVar('REMOTE_HOST', $REMOTE_HOST, SQ_SERVER);
504 sqGetGlobalVar('HTTP_VIA', $HTTP_VIA, SQ_SERVER);
505 sqGetGlobalVar('HTTP_X_FORWARDED_FOR', $HTTP_X_FORWARDED_FOR, SQ_SERVER);
60a46e65 506
78f39e78 507 $rn = "\r\n";
223872cb 508
78f39e78 509 /* This creates an RFC 822 date */
867fed37 510 $date = date('D, j M Y H:i:s ', time()) . $this->timezone();
49c7f411 511
78f39e78 512 /* Create a message-id */
49c7f411 513 $message_id = '<';
514 /* user-specifc data to decrease collision chance */
515 $seed_data = $username . '.';
516 $seed_data .= (!empty($REMOTE_PORT) ? $REMOTE_PORT . '.' : '');
517 $seed_data .= (!empty($REMOTE_ADDR) ? $REMOTE_ADDR . '.' : '');
518 /* add the current time in milliseconds and randomness */
519 $seed_data .= uniqid(mt_rand(),true);
520 /* put it through one-way hash and add it to the ID */
521 $message_id .= md5($seed_data) . '.squirrel@' . $SERVER_NAME .'>';
b67d61ee 522 $this->message_id = $message_id;
523
78f39e78 524 /* Make an RFC822 Received: line */
525 if (isset($REMOTE_HOST)) {
526 $received_from = "$REMOTE_HOST ([$REMOTE_ADDR])";
527 } else {
528 $received_from = $REMOTE_ADDR;
529 }
530 if (isset($HTTP_VIA) || isset ($HTTP_X_FORWARDED_FOR)) {
531 if (!isset($HTTP_X_FORWARDED_FOR) || $HTTP_X_FORWARDED_FOR == '') {
532 $HTTP_X_FORWARDED_FOR = 'unknown';
533 }
534 $received_from .= " (proxying for $HTTP_X_FORWARDED_FOR)";
535 }
536 $header = array();
432db2fc 537
538 /**
539 * SquirrelMail header
540 *
541 * This Received: header provides information that allows to track
542 * user and machine that was used to send email. Don't remove it
543 * unless you understand all possible forging issues or your
544 * webmail installation does not prevent changes in user's email address.
545 * See SquirrelMail bug tracker #847107 for more details about it.
bb08da84 546 *
547 * Add $hide_squirrelmail_header as a candidate for config_local.php
548 * to allow completely hiding SquirrelMail participation in message
539a323f 549 * processing; This is dangerous, especially if users can modify their
e930c9fe 550 * account information, as it makes mapping a sent message back to the
551 * original sender almost impossible.
432db2fc 552 */
e930c9fe 553 $show_sm_header = ( defined('hide_squirrelmail_header') ? ! hide_squirrelmail_header : 1 );
bb08da84 554
555 if ( $show_sm_header ) {
556 if (isset($encode_header_key) &&
432db2fc 557 trim($encode_header_key)!='') {
558 // use encoded headers, if encryption key is set and not empty
b81efcb4 559 $header[] = 'X-Squirrel-UserHash: '.OneTimePadEncrypt($username,base64_encode($encode_header_key)).$rn;
560 $header[] = 'X-Squirrel-FromHash: '.OneTimePadEncrypt($this->ip2hex($REMOTE_ADDR),base64_encode($encode_header_key)).$rn;
432db2fc 561 if (isset($HTTP_X_FORWARDED_FOR))
b81efcb4 562 $header[] = 'X-Squirrel-ProxyHash:'.OneTimePadEncrypt($this->ip2hex($HTTP_X_FORWARDED_FOR),base64_encode($encode_header_key)).$rn;
bb08da84 563 } else {
432db2fc 564 // use default received headers
565 $header[] = "Received: from $received_from" . $rn;
566 if ($edit_identity || ! isset($hide_auth_header) || ! $hide_auth_header)
567 $header[] = " (SquirrelMail authenticated user $username)" . $rn;
568 $header[] = " by $SERVER_NAME with HTTP;" . $rn;
569 $header[] = " $date" . $rn;
bb08da84 570 }
35aaf666 571 }
432db2fc 572
59387d1c 573 /* Insert the rest of the header fields */
574 $header[] = 'Message-ID: '. $message_id . $rn;
ea87de81 575 if (is_object($reply_rfc822_header) &&
b4316b34 576 isset($reply_rfc822_header->message_id) &&
577 $reply_rfc822_header->message_id) {
78f39e78 578 $rep_message_id = $reply_rfc822_header->message_id;
579 // $this->strip_crlf($message_id);
580 $header[] = 'In-Reply-To: '.$rep_message_id . $rn;
581 $references = $this->calculate_references($reply_rfc822_header);
582 $header[] = 'References: '.$references . $rn;
583 }
584 $header[] = "Date: $date" . $rn;
59387d1c 585 $header[] = 'Subject: '.encodeHeader($rfc822_header->subject) . $rn;
ac47827c 586 $header[] = 'From: '. $rfc822_header->getAddr_s('from',",$rn ",true) . $rn;
587
ea87de81 588 // folding address list [From|To|Cc|Bcc] happens by using ",$rn<space>"
589 // as delimiter
ac47827c 590 // Do not use foldLine for that.
591
592 // RFC2822 if from contains more then 1 address
59387d1c 593 if (count($rfc822_header->from) > 1) {
215de78c 594 $header[] = 'Sender: '. $rfc822_header->getAddr_s('sender',',',true) . $rn;
78f39e78 595 }
596 if (count($rfc822_header->to)) {
ac47827c 597 $header[] = 'To: '. $rfc822_header->getAddr_s('to',",$rn ",true) . $rn;
78f39e78 598 }
599 if (count($rfc822_header->cc)) {
ac47827c 600 $header[] = 'Cc: '. $rfc822_header->getAddr_s('cc',",$rn ",true) . $rn;
78f39e78 601 }
602 if (count($rfc822_header->reply_to)) {
215de78c 603 $header[] = 'Reply-To: '. $rfc822_header->getAddr_s('reply_to',',',true) . $rn;
78f39e78 604 }
605 /* Sendmail should return true. Default = false */
606 $bcc = $this->getBcc();
607 if (count($rfc822_header->bcc)) {
ac47827c 608 $s = 'Bcc: '. $rfc822_header->getAddr_s('bcc',",$rn ",true) . $rn;
78f39e78 609 if (!$bcc) {
78f39e78 610 $raw_length += strlen($s);
611 } else {
612 $header[] = $s;
613 }
614 }
72b004e6 615 /* Identify SquirrelMail */
b37e457f 616 $header[] = 'User-Agent: SquirrelMail/' . SM_VERSION . $rn;
78f39e78 617 /* Do the MIME-stuff */
618 $header[] = 'MIME-Version: 1.0' . $rn;
619 $contenttype = 'Content-Type: '. $rfc822_header->content_type->type0 .'/'.
59387d1c 620 $rfc822_header->content_type->type1;
78f39e78 621 if (count($rfc822_header->content_type->properties)) {
622 foreach ($rfc822_header->content_type->properties as $k => $v) {
623 if ($k && $v) {
72b004e6 624 $contenttype .= ';' .$k.'='.$v;
78f39e78 625 }
626 }
627 }
59387d1c 628 $header[] = $contenttype . $rn;
78f39e78 629 if ($encoding = $rfc822_header->encoding) {
23301b33 630 $header[] = 'Content-Transfer-Encoding: ' . $encoding . $rn;
72b004e6 631 }
539a323f 632 if (isset($rfc822_header->dnt) && $rfc822_header->dnt) {
72b004e6 633 $dnt = $rfc822_header->getAddr_s('dnt');
78f39e78 634 /* Pegasus Mail */
635 $header[] = 'X-Confirm-Reading-To: '.$dnt. $rn;
636 /* RFC 2298 */
637 $header[] = 'Disposition-Notification-To: '.$dnt. $rn;
638 }
639 if ($rfc822_header->priority) {
d1db3699 640 switch($rfc822_header->priority)
78f39e78 641 {
d1db3699 642 case 1:
91e0dccc 643 $header[] = 'X-Priority: 1 (Highest)'.$rn;
644 $header[] = 'Importance: High'. $rn; break;
d1db3699 645 case 5:
91e0dccc 646 $header[] = 'X-Priority: 5 (Lowest)'.$rn;
647 $header[] = 'Importance: Low'. $rn; break;
78f39e78 648 default: break;
649 }
650 }
72b004e6 651 /* Insert headers from the $more_headers array */
78f39e78 652 if(count($rfc822_header->more_headers)) {
653 reset($rfc822_header->more_headers);
654 foreach ($rfc822_header->more_headers as $k => $v) {
655 $header[] = $k.': '.$v .$rn;
656 }
657 }
658 $cnt = count($header);
659 $hdr_s = '';
5d2a7b15 660
78f39e78 661 for ($i = 0 ; $i < $cnt ; $i++) {
5d2a7b15 662 $sKey = substr($header[$i],0,strpos($header[$i],':'));
663 switch ($sKey)
664 {
665 case 'Message-ID':
666 case 'In-Reply_To':
667 $hdr_s .= $header[$i];
668 break;
669 case 'References':
670 $sRefs = substr($header[$i],12);
671 $aRefs = explode(' ',$sRefs);
672 $sLine = 'References:';
673 foreach ($aRefs as $sReference) {
cc201b46 674 if ( trim($sReference) == '' ) {
675 /* Don't add spaces. */
676 } elseif (strlen($sLine)+strlen($sReference) >76) {
5d2a7b15 677 $hdr_s .= $sLine;
678 $sLine = $rn . ' ' . $sReference;
679 } else {
680 $sLine .= ' '. $sReference;
681 }
682 }
683 $hdr_s .= $sLine;
684 break;
ac47827c 685 case 'To':
686 case 'Cc':
687 case 'Bcc':
688 case 'From':
689 $hdr_s .= $header[$i];
690 break;
5d2a7b15 691 default: $hdr_s .= $this->foldLine($header[$i], 78, str_pad('',4)); break;
692 }
78f39e78 693 }
78f39e78 694 $header = $hdr_s;
695 $header .= $rn; /* One blank line to separate header and body */
696 $raw_length += strlen($header);
697 return $header;
4960ec8e 698 }
699
72b004e6 700 /**
701 * function foldLine - for cleanly folding of headerlines
702 *
703 * @param string $line
704 * @param integer $length length to fold the line at
705 * @param string $pre prefix the line with...
706 *
3a70ee56 707 * @return string $line folded line with trailing CRLF
72b004e6 708 */
1274f430 709 function foldLine($line, $length, $pre='') {
e4f9307a 710 $line = substr($line,0, -2);
fb1d6cb6 711 $length -= 2; /* do not fold between \r and \n */
712 $cnt = strlen($line);
713 if ($cnt > $length) { /* try folding */
714 $fold_string = "\r\n " . $pre;
715 $bFirstFold = false;
716 $aFoldLine = array();
717 while (strlen($line) > $length) {
718 $fold = false;
719 /* handle encoded parts */
7060c7f0 720 if (preg_match('/(=\?([^?]*)\?(Q|B)\?([^?]*)\?=)(\s+|.*)/Ui',$line,$regs)) {
fb1d6cb6 721 $fold_tmp = $regs[1];
7060c7f0 722 if (!trim($regs[5])) {
723 $fold_tmp .= $regs[5];
724 }
fb1d6cb6 725 $iPosEnc = strpos($line,$fold_tmp);
726 $iLengthEnc = strlen($fold_tmp);
c422e824 727 $iPosEncEnd = $iPosEnc+$iLengthEnc;
728 if ($iPosEnc < $length && (($iPosEncEnd) > $length)) {
fb1d6cb6 729 $fold = true;
730 /* fold just before the start of the encoded string */
7060c7f0 731 if ($iPosEnc) {
732 $aFoldLine[] = substr($line,0,$iPosEnc);
733 }
fb1d6cb6 734 $line = substr($line,$iPosEnc);
735 if (!$bFirstFold) {
736 $bFirstFold = true;
737 $length -= strlen($fold_string);
738 }
739 if ($iLengthEnc > $length) { /* place the encoded
740 string on a separate line and do not fold inside it*/
223872cb 741 /* minimize foldstring */
742 $fold_string = "\r\n ";
743 $aFoldLine[] = substr($line,0,$iLengthEnc);
744 $line = substr($line,$iLengthEnc);
72b004e6 745 }
c422e824 746 } else if ($iPosEnc < $length) { /* the encoded string fits into the foldlength */
fb1d6cb6 747 /*remainder */
fb1d6cb6 748 $sLineRem = substr($line,$iPosEncEnd,$length - $iPosEncEnd);
c422e824 749 if (preg_match('/^(=\?([^?]*)\?(Q|B)\?([^?]*)\?=)(.*)/Ui',$sLineRem) || !preg_match('/[=,;\s]/',$sLineRem)) {
fb1d6cb6 750 /*impossible to fold clean in the next part -> fold after the enc string */
7060c7f0 751 $aFoldLine[] = substr($line,0,$iPosEncEnd);
752 $line = substr($line,$iPosEncEnd);
fb1d6cb6 753 $fold = true;
754 if (!$bFirstFold) {
755 $bFirstFold = true;
756 $length -= strlen($fold_string);
757 }
72b004e6 758 }
fb1d6cb6 759 }
760 }
761 if (!$fold) {
762 $line_tmp = substr($line,0,$length);
763 $iFoldPos = false;
764 /* try to fold at logical places */
765 switch (true)
766 {
767 case ($iFoldPos = strrpos($line_tmp,',')): break;
768 case ($iFoldPos = strrpos($line_tmp,';')): break;
769 case ($iFoldPos = strrpos($line_tmp,' ')): break;
770 case ($iFoldPos = strrpos($line_tmp,'=')): break;
771 default: break;
772 }
72b004e6 773
fb1d6cb6 774 if (!$iFoldPos) { /* clean folding didn't work */
775 $iFoldPos = $length;
776 }
777 $aFoldLine[] = substr($line,0,$iFoldPos+1);
778 $line = substr($line,$iFoldPos+1);
779 if (!$bFirstFold) {
780 $bFirstFold = true;
781 $length -= strlen($fold_string);
782 }
783 }
784 }
785 /*$reconstruct the line */
786 if ($line) {
787 $aFoldLine[] = $line;
788 }
789 $line = implode($fold_string,$aFoldLine);
790 }
791 return $line."\r\n";
792 }
3b53d87f 793
72b004e6 794 /**
795 * function mimeBoundary - calculates the mime boundary to use
796 *
797 * This function will generate a random mime boundary base part
798 * for the message if the boundary has not already been set.
799 *
3a70ee56 800 * @return string $mimeBoundaryString random mime boundary string
72b004e6 801 */
59387d1c 802 function mimeBoundary () {
78f39e78 803 static $mimeBoundaryString;
3b53d87f 804
78f39e78 805 if ( !isset( $mimeBoundaryString ) ||
806 $mimeBoundaryString == '') {
807 $mimeBoundaryString = '----=_' . date( 'YmdHis' ) . '_' .
808 mt_rand( 10000, 99999 );
809 }
810 return $mimeBoundaryString;
3b53d87f 811 }
812
72b004e6 813 /**
814 * function timezone - Time offset for correct timezone
815 *
3a70ee56 816 * @return string $result with timezone and offset
72b004e6 817 */
59387d1c 818 function timezone () {
78f39e78 819 global $invert_time;
820
821 $diff_second = date('Z');
822 if ($invert_time) {
823 $diff_second = - $diff_second;
824 }
825 if ($diff_second > 0) {
826 $sign = '+';
827 } else {
828 $sign = '-';
829 }
830 $diff_second = abs($diff_second);
831 $diff_hour = floor ($diff_second / 3600);
832 $diff_minute = floor (($diff_second-3600*$diff_hour) / 60);
833 $zonename = '('.strftime('%Z').')';
72b004e6 834 $result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute,
3b53d87f 835 $zonename);
78f39e78 836 return ($result);
59387d1c 837 }
3b53d87f 838
72b004e6 839 /**
f2ac3325 840 * function calculate_references - calculate correct References string
841 * Adds the current message ID, and makes sure it doesn't grow forever,
842 * to that extent it drops message-ID's in a smart way until the string
843 * length is under the recommended value of 1000 ("References: <986>\r\n").
844 * It always keeps the first and the last three ID's.
72b004e6 845 *
846 * @param Rfc822Header $hdr message header to calculate from
847 *
f2ac3325 848 * @return string $refer concatenated and trimmed References string
72b004e6 849 */
1274f430 850 function calculate_references($hdr) {
f2ac3325 851 $aReferences = preg_split('/\s+/', $hdr->references);
78f39e78 852 $message_id = $hdr->message_id;
853 $in_reply_to = $hdr->in_reply_to;
539a323f 854
f2ac3325 855 // if References already exists, add the current message ID at the end.
856 // no References exists; if we know a IRT, add that aswell
857 if (count($aReferences) == 0 && $in_reply_to) {
858 $aReferences[] = $in_reply_to;
859 }
860 $aReferences[] = $message_id;
861
862 // sanitize the array: trim whitespace, remove dupes
86e6a9eb 863 array_walk($aReferences, 'sq_trim_value');
f2ac3325 864 $aReferences = array_unique($aReferences);
865
866 while ( count($aReferences) > 4 && strlen(implode(' ', $aReferences)) >= 986 ) {
867 $aReferences = array_merge(array_slice($aReferences,0,1),array_slice($aReferences,2));
78f39e78 868 }
f2ac3325 869 return implode(' ', $aReferences);
870 }
871
872 /**
432db2fc 873 * Converts ip address to hexadecimal string
874 *
875 * Function is used to convert ipv4 and ipv6 addresses to hex strings.
876 * It removes all delimiter symbols from ip addresses, converts decimal
877 * ipv4 numbers to hex and pads strings in order to present full length
ea87de81 878 * address. ipv4 addresses are represented as 8 byte strings, ipv6 addresses
432db2fc 879 * are represented as 32 byte string.
880 *
881 * If function fails to detect address format, it returns unprocessed string.
882 * @param string $string ip address string
883 * @return string processed ip address string
94511d23 884 * @since 1.5.1 and 1.4.5
432db2fc 885 */
886 function ip2hex($string) {
887 if (preg_match("/^(\d+)\.(\d+)\.(\d+)\.(\d+)$/",$string,$match)) {
888 // ipv4 address
889 $ret = str_pad(dechex($match[1]),2,'0',STR_PAD_LEFT)
890 . str_pad(dechex($match[2]),2,'0',STR_PAD_LEFT)
891 . str_pad(dechex($match[3]),2,'0',STR_PAD_LEFT)
892 . str_pad(dechex($match[4]),2,'0',STR_PAD_LEFT);
893 } elseif (preg_match("/^([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)$/i",$string,$match)) {
894 // full ipv6 address
895 $ret = str_pad($match[1],4,'0',STR_PAD_LEFT)
896 . str_pad($match[2],4,'0',STR_PAD_LEFT)
897 . str_pad($match[3],4,'0',STR_PAD_LEFT)
898 . str_pad($match[4],4,'0',STR_PAD_LEFT)
899 . str_pad($match[5],4,'0',STR_PAD_LEFT)
900 . str_pad($match[6],4,'0',STR_PAD_LEFT)
901 . str_pad($match[7],4,'0',STR_PAD_LEFT)
902 . str_pad($match[8],4,'0',STR_PAD_LEFT);
903 } elseif (preg_match("/^\:\:([0-9a-h\:]+)$/i",$string,$match)) {
904 // short ipv6 with all starting symbols nulled
905 $aAddr=explode(':',$match[1]);
906 $ret='';
907 foreach ($aAddr as $addr) {
908 $ret.=str_pad($addr,4,'0',STR_PAD_LEFT);
909 }
910 $ret=str_pad($ret,32,'0',STR_PAD_LEFT);
911 } elseif (preg_match("/^([0-9a-h\:]+)::([0-9a-h\:]+)$/i",$string,$match)) {
912 // short ipv6 with middle part nulled
913 $aStart=explode(':',$match[1]);
914 $sStart='';
915 foreach($aStart as $addr) {
916 $sStart.=str_pad($addr,4,'0',STR_PAD_LEFT);
917 }
918 $aEnd = explode(':',$match[2]);
919 $sEnd='';
920 foreach($aEnd as $addr) {
921 $sEnd.=str_pad($addr,4,'0',STR_PAD_LEFT);
922 }
923 $ret = $sStart
924 . str_pad('',(32 - strlen($sStart . $sEnd)),'0',STR_PAD_LEFT)
925 . $sEnd;
926 } else {
927 // unknown addressing
928 $ret = $string;
929 }
930 return $ret;
931 }
59387d1c 932}