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[squirrelmail.git] / class / deliver / Deliver.class.php
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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 /**
32 * function mail - send the message parts to the SMTP stream
33 *
0fdb0aa1 34 * @param Message $message Message object to send
10adeb76 35 * NOTE that this is passed by
36 * reference and will be modified
37 * upon return with updated
38 * fields such as Message ID, References,
39 * In-Reply-To and Date headers.
40 * @param resource $stream Handle to the outgoing stream
e2ccf284 41 * (when FALSE, nothing will be
42 * written to the stream; this can
43 * be used to determine the actual
44 * number of bytes that will be
45 * written to the stream)
0fdb0aa1 46 * @param string $reply_id Identifies message being replied to
47 * (OPTIONAL; caller should ONLY specify
48 * a value for this when the message
49 * being sent is a reply)
50 * @param string $reply_ent_id Identifies message being replied to
51 * in the case it was an embedded/attached
52 * message inside another (OPTIONAL; caller
53 * should ONLY specify a value for this
54 * when the message being sent is a reply)
69bb88aa 55 * @param resource $imap_stream If there is an open IMAP stream in
56 * the caller's context, it should be
57 * passed in here. This is OPTIONAL,
58 * as one will be created if not given,
59 * but as some IMAP servers may baulk
60 * at opening more than one connection
61 * at a time, the caller should always
62 * abide if possible. Currently, this
63 * stream is only used when $reply_id
64 * is also non-zero, but that is subject
65 * to change.
33f0da43 66 * @param mixed $extra Any implementation-specific variables
67 * can be passed in here and used in
68 * an overloaded version of this method
69 * if needed.
72b004e6 70 *
10adeb76 71 * @return integer The number of bytes written (or that would have been
72 * written) to the output stream.
b67d61ee 73 *
72b004e6 74 */
10adeb76 75 function mail(&$message, $stream=false, $reply_id=0, $reply_ent_id=0,
33f0da43 76 $imap_stream=NULL, $extra=NULL) {
e2ccf284 77
10adeb76 78 $rfc822_header = &$message->rfc822_header;
79
78f39e78 80 if (count($message->entities)) {
81 $boundary = $this->mimeBoundary();
82 $rfc822_header->content_type->properties['boundary']='"'.$boundary.'"';
83 } else {
84 $boundary='';
85 }
86 $raw_length = 0;
0fdb0aa1 87
88
89 // calculate reply header if needed
90 //
91 if ($reply_id) {
92 global $imapConnection, $username, $imapServerAddress,
93 $imapPort, $mailbox;
e2ccf284 94
69bb88aa 95 // try our best to use an existing IMAP handle
96 //
97 $close_imap_stream = FALSE;
98 if (is_resource($imap_stream)) {
99 $my_imap_stream = $imap_stream;
100
101 } else if (is_resource($imapConnection)) {
102 $my_imap_stream = $imapConnection;
103
104 } else {
105 $close_imap_stream = TRUE;
106 $my_imap_stream = sqimap_login($username, FALSE,
0fdb0aa1 107 $imapServerAddress, $imapPort, 0);
69bb88aa 108 }
109
110 sqimap_mailbox_select($my_imap_stream, $mailbox);
111 $reply_message = sqimap_get_message($my_imap_stream, $reply_id, $mailbox);
0fdb0aa1 112
69bb88aa 113 if ($close_imap_stream) {
114 sqimap_logout($my_imap_stream);
115 }
0fdb0aa1 116
117 if ($reply_ent_id) {
118 /* redefine the messsage in case of message/rfc822 */
119 $reply_message = $message->getEntity($reply_ent_id);
120 /* message is an entity which contains the envelope and type0=message
121 * and type1=rfc822. The actual entities are childs from
122 * $reply_message->entities[0]. That's where the encoding and is located
123 */
124
125 $orig_header = $reply_message->rfc822_header; /* here is the envelope located */
126
127 } else {
128 $orig_header = $reply_message->rfc822_header;
129 }
08e33475 130 $message->reply_rfc822_header = $orig_header;
0fdb0aa1 131 }
0fdb0aa1 132
133
72b004e6 134 $reply_rfc822_header = (isset($message->reply_rfc822_header)
78f39e78 135 ? $message->reply_rfc822_header : '');
136 $header = $this->prepareRFC822_Header($rfc822_header, $reply_rfc822_header, $raw_length);
75b14a70 137
e2ccf284 138 $this->send_mail($message, $header, $boundary, $stream, $raw_length, $extra);
139
10adeb76 140 return $raw_length;
e2ccf284 141 }
142
143 /**
144 * function send_mail - send the message parts to the IMAP stream
145 *
146 * @param Message $message Message object to send
147 * @param string $header Headers ready to send
148 * @param string $boundary Message parts boundary
149 * @param resource $stream Handle to the SMTP stream
150 * (when FALSE, nothing will be
151 * written to the stream; this can
152 * be used to determine the actual
153 * number of bytes that will be
154 * written to the stream)
155 * @param int &$raw_length The number of bytes written (or that
156 * would have been written) to the
157 * output stream - NOTE that this is
158 * passed by reference
159 * @param mixed $extra Any implementation-specific variables
160 * can be passed in here and used in
161 * an overloaded version of this method
162 * if needed.
163 *
164 * @return void
165 *
166 */
167 function send_mail($message, $header, $boundary, $stream=false,
168 &$raw_length, $extra=NULL) {
169
170
78f39e78 171 if ($stream) {
59387d1c 172 $this->preWriteToStream($header);
173 $this->writeToStream($stream, $header);
78f39e78 174 }
175 $this->writeBody($message, $stream, $raw_length, $boundary);
3b53d87f 176 }
78f39e78 177
72b004e6 178 /**
179 * function writeBody - generate and write the mime boundaries around each part to the stream
180 *
181 * Recursively formats and writes the MIME boundaries of the $message
182 * to the output stream.
183 *
184 * @param Message $message Message object to transform
185 * @param resource $stream SMTP output stream
e2ccf284 186 * (when FALSE, nothing will be
187 * written to the stream; this can
188 * be used to determine the actual
189 * number of bytes that will be
190 * written to the stream)
72b004e6 191 * @param integer &$length_raw raw length of the message (part)
192 * as returned by mail fn
193 * @param string $boundary custom boundary to call, usually for subparts
194 *
3a70ee56 195 * @return void
72b004e6 196 */
3b53d87f 197 function writeBody($message, $stream, &$length_raw, $boundary='') {
caf6a9a4 198 // calculate boundary in case of multidimensional mime structures
199 if ($boundary && $message->entity_id && count($message->entities)) {
200 if (strpos($boundary,'_part_')) {
201 $boundary = substr($boundary,0,strpos($boundary,'_part_'));
ba86230e 202
593d083d 203 // the next four lines use strrev to reverse any nested boundaries
204 // because RFC 2046 (5.1.1) says that if a line starts with the outer
205 // boundary string (doesn't matter what the line ends with), that
206 // can be considered a match for the outer boundary; thus the nested
207 // boundary needs to be unique from the outer one
ba86230e 208 //
209 } else if (strpos($boundary,'_trap_')) {
210 $boundary = substr(strrev($boundary),0,strpos(strrev($boundary),'_part_'));
caf6a9a4 211 }
ba86230e 212 $boundary_new = strrev($boundary . '_part_'.$message->entity_id);
caf6a9a4 213 } else {
214 $boundary_new = $boundary;
215 }
1274f430 216 if ($boundary && !$message->rfc822_header) {
78f39e78 217 $s = '--'.$boundary."\r\n";
caf6a9a4 218 $s .= $this->prepareMIME_Header($message, $boundary_new);
78f39e78 219 $length_raw += strlen($s);
220 if ($stream) {
3b53d87f 221 $this->preWriteToStream($s);
78f39e78 222 $this->writeToStream($stream, $s);
223 }
224 }
225 $this->writeBodyPart($message, $stream, $length_raw);
72b004e6 226
78f39e78 227 $last = false;
228 for ($i=0, $entCount=count($message->entities);$i<$entCount;$i++) {
caf6a9a4 229 $msg = $this->writeBody($message->entities[$i], $stream, $length_raw, $boundary_new);
78f39e78 230 if ($i == $entCount-1) $last = true;
231 }
1274f430 232 if ($boundary && $last) {
dcc5c913 233 $s = "--".$boundary_new."--\r\n\r\n";
78f39e78 234 $length_raw += strlen($s);
235 if ($stream) {
3b53d87f 236 $this->preWriteToStream($s);
78f39e78 237 $this->writeToStream($stream, $s);
238 }
239 }
3b53d87f 240 }
241
72b004e6 242 /**
243 * function writeBodyPart - write each individual mimepart
244 *
245 * Recursively called by WriteBody to write each mime part to the SMTP stream
246 *
247 * @param Message $message Message object to transform
248 * @param resource $stream SMTP output stream
e2ccf284 249 * (when FALSE, nothing will be
250 * written to the stream; this can
251 * be used to determine the actual
252 * number of bytes that will be
253 * written to the stream)
72b004e6 254 * @param integer &$length length of the message part
255 * as returned by mail fn
256 *
3a70ee56 257 * @return void
72b004e6 258 */
3b53d87f 259 function writeBodyPart($message, $stream, &$length) {
1274f430 260 if ($message->mime_header) {
78f39e78 261 $type0 = $message->mime_header->type0;
262 } else {
263 $type0 = $message->rfc822_header->content_type->type0;
264 }
265
266 $body_part_trailing = $last = '';
267 switch ($type0)
268 {
269 case 'text':
270 case 'message':
271 if ($message->body_part) {
272 $body_part = $message->body_part;
4cf85ddd 273 // remove NUL characters
274 $body_part = str_replace("\0",'',$body_part);
78f39e78 275 $length += $this->clean_crlf($body_part);
276 if ($stream) {
72b004e6 277 $this->preWriteToStream($body_part);
78f39e78 278 $this->writeToStream($stream, $body_part);
279 }
280 $last = $body_part;
281 } elseif ($message->att_local_name) {
1f270d3c 282 global $username, $attachment_dir;
283 $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
78f39e78 284 $filename = $message->att_local_name;
1f270d3c 285 $file = fopen ($hashed_attachment_dir . '/' . $filename, 'rb');
78f39e78 286 while ($body_part = fgets($file, 4096)) {
257dea3f 287 // remove NUL characters
288 $body_part = str_replace("\0",'',$body_part);
78f39e78 289 $length += $this->clean_crlf($body_part);
290 if ($stream) {
291 $this->preWriteToStream($body_part);
292 $this->writeToStream($stream, $body_part);
293 }
294 $last = $body_part;
295 }
296 fclose($file);
297 }
298 break;
299 default:
300 if ($message->body_part) {
301 $body_part = $message->body_part;
257dea3f 302 // remove NUL characters
303 $body_part = str_replace("\0",'',$body_part);
78f39e78 304 $length += $this->clean_crlf($body_part);
305 if ($stream) {
306 $this->writeToStream($stream, $body_part);
307 }
308 } elseif ($message->att_local_name) {
1f270d3c 309 global $username, $attachment_dir;
310 $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
78f39e78 311 $filename = $message->att_local_name;
1f270d3c 312 $file = fopen ($hashed_attachment_dir . '/' . $filename, 'rb');
78f39e78 313 while ($tmp = fread($file, 570)) {
27ff4efb 314 $body_part = chunk_split(base64_encode($tmp));
315 // Up to 4.3.10 chunk_split always appends a newline,
316 // while in 4.3.11 it doesn't if the string to split
317 // is shorter than the chunk length.
318 if( substr($body_part, -1 , 1 ) != "\n" )
319 $body_part .= "\n";
78f39e78 320 $length += $this->clean_crlf($body_part);
321 if ($stream) {
322 $this->writeToStream($stream, $body_part);
323 }
324 }
325 fclose($file);
3b53d87f 326 }
78f39e78 327 break;
328 }
329 $body_part_trailing = '';
330 if ($last && substr($last,-1) != "\n") {
331 $body_part_trailing = "\r\n";
332 }
333 if ($body_part_trailing) {
334 $length += strlen($body_part_trailing);
335 if ($stream) {
336 $this->preWriteToStream($body_part_trailing);
337 $this->writeToStream($stream, $body_part_trailing);
338 }
339 }
3b53d87f 340 }
78f39e78 341
72b004e6 342 /**
343 * function clean_crlf - change linefeeds and newlines to legal characters
344 *
345 * The SMTP format only allows CRLF as line terminators.
346 * This function replaces illegal teminators with the correct terminator.
347 *
348 * @param string &$s string to clean linefeeds on
349 *
3a70ee56 350 * @return void
72b004e6 351 */
69298c28 352 function clean_crlf(&$s) {
3b53d87f 353 $s = str_replace("\r\n", "\n", $s);
354 $s = str_replace("\r", "\n", $s);
355 $s = str_replace("\n", "\r\n", $s);
78f39e78 356 return strlen($s);
3b53d87f 357 }
78f39e78 358
72b004e6 359 /**
360 * function strip_crlf - strip linefeeds and newlines from a string
361 *
362 * The SMTP format only allows CRLF as line terminators.
363 * This function strips all line terminators from the string.
364 *
365 * @param string &$s string to clean linefeeds on
366 *
3a70ee56 367 * @return void
72b004e6 368 */
e4f9307a 369 function strip_crlf(&$s) {
370 $s = str_replace("\r\n ", '', $s);
78f39e78 371 $s = str_replace("\r", '', $s);
372 $s = str_replace("\n", '', $s);
e4f9307a 373 }
3b53d87f 374
72b004e6 375 /**
376 * function preWriteToStream - reserved for extended functionality
377 *
378 * This function is not yet implemented.
379 * Reserved for extended functionality.
380 *
381 * @param string &$s string to operate on
382 *
3a70ee56 383 * @return void
72b004e6 384 */
69298c28 385 function preWriteToStream(&$s) {
3b53d87f 386 }
78f39e78 387
72b004e6 388 /**
389 * function writeToStream - write data to the SMTP stream
390 *
391 * @param resource $stream SMTP output stream
392 * @param string $data string with data to send to the SMTP stream
393 *
3a70ee56 394 * @return void
72b004e6 395 */
3b53d87f 396 function writeToStream($stream, $data) {
78f39e78 397 fputs($stream, $data);
3b53d87f 398 }
78f39e78 399
72b004e6 400 /**
401 * function initStream - reserved for extended functionality
402 *
403 * This function is not yet implemented.
404 * Reserved for extended functionality.
405 *
406 * @param Message $message Message object
407 * @param string $host host name or IP to connect to
408 * @param string $user username to log into the SMTP server with
409 * @param string $pass password to log into the SMTP server with
410 * @param integer $length
411 *
3a70ee56 412 * @return handle $stream file handle resource to SMTP stream
72b004e6 413 */
3b53d87f 414 function initStream($message, $length=0, $host='', $port='', $user='', $pass='') {
78f39e78 415 return $stream;
3b53d87f 416 }
72b004e6 417
418 /**
419 * function getBCC - reserved for extended functionality
420 *
421 * This function is not yet implemented.
422 * Reserved for extended functionality.
423 *
424 */
425 function getBCC() {
78f39e78 426 return false;
59387d1c 427 }
3b53d87f 428
72b004e6 429 /**
430 * function prepareMIME_Header - creates the mime header
431 *
432 * @param Message $message Message object to act on
433 * @param string $boundary mime boundary from fn MimeBoundary
434 *
3a70ee56 435 * @return string $header properly formatted mime header
72b004e6 436 */
3b53d87f 437 function prepareMIME_Header($message, $boundary) {
78f39e78 438 $mime_header = $message->mime_header;
439 $rn="\r\n";
440 $header = array();
1274f430 441
78f39e78 442 $contenttype = 'Content-Type: '. $mime_header->type0 .'/'.
443 $mime_header->type1;
444 if (count($message->entities)) {
fcce1b3c 445 $contenttype .= ';' . 'boundary="'.$boundary.'"';
78f39e78 446 }
447 if (isset($mime_header->parameters['name'])) {
448 $contenttype .= '; name="'.
449 encodeHeader($mime_header->parameters['name']). '"';
450 }
451 if (isset($mime_header->parameters['charset'])) {
452 $charset = $mime_header->parameters['charset'];
453 $contenttype .= '; charset="'.
454 encodeHeader($charset). '"';
455 }
1274f430 456
78f39e78 457 $header[] = $contenttype . $rn;
458 if ($mime_header->description) {
eb72e151 459 $header[] = 'Content-Description: ' . $mime_header->description . $rn;
78f39e78 460 }
461 if ($mime_header->encoding) {
eb72e151 462 $header[] = 'Content-Transfer-Encoding: ' . $mime_header->encoding . $rn;
78f39e78 463 } else {
464 if ($mime_header->type0 == 'text' || $mime_header->type0 == 'message') {
eb72e151 465 $header[] = 'Content-Transfer-Encoding: 8bit' . $rn;
c6dd29ba 466 } else if ($mime_header->type0 == 'multipart' || $mime_header->type0 == 'alternative') {
467 /* no-op; no encoding needed */
78f39e78 468 } else {
eb72e151 469 $header[] = 'Content-Transfer-Encoding: base64' . $rn;
78f39e78 470 }
471 }
472 if ($mime_header->id) {
eb72e151 473 $header[] = 'Content-ID: ' . $mime_header->id . $rn;
78f39e78 474 }
475 if ($mime_header->disposition) {
476 $disposition = $mime_header->disposition;
477 $contentdisp = 'Content-Disposition: ' . $disposition->name;
478 if ($disposition->getProperty('filename')) {
479 $contentdisp .= '; filename="'.
480 encodeHeader($disposition->getProperty('filename')). '"';
481 }
72b004e6 482 $header[] = $contentdisp . $rn;
78f39e78 483 }
484 if ($mime_header->md5) {
eb72e151 485 $header[] = 'Content-MD5: ' . $mime_header->md5 . $rn;
78f39e78 486 }
487 if ($mime_header->language) {
eb72e151 488 $header[] = 'Content-Language: ' . $mime_header->language . $rn;
78f39e78 489 }
4960ec8e 490
78f39e78 491 $cnt = count($header);
492 $hdr_s = '';
493 for ($i = 0 ; $i < $cnt ; $i++) {
494 $hdr_s .= $this->foldLine($header[$i], 78,str_pad('',4));
495 }
496 $header = $hdr_s;
497 $header .= $rn; /* One blank line to separate mimeheader and body-entity */
498 return $header;
499 }
4960ec8e 500
72b004e6 501 /**
502 * function prepareRFC822_Header - prepares the RFC822 header string from Rfc822Header object(s)
503 *
504 * This function takes the Rfc822Header object(s) and formats them
505 * into the RFC822Header string to send to the SMTP server as part
506 * of the SMTP message.
507 *
508 * @param Rfc822Header $rfc822_header
509 * @param Rfc822Header $reply_rfc822_header
510 * @param integer &$raw_length length of the message
511 *
3a70ee56 512 * @return string $header
72b004e6 513 */
10adeb76 514 function prepareRFC822_Header(&$rfc822_header, $reply_rfc822_header, &$raw_length) {
b37e457f 515 global $domain, $username, $encode_header_key,
e930c9fe 516 $edit_identity, $hide_auth_header;
60a46e65 517
49c7f411 518 /* if server var SERVER_NAME not available, or contains
519 ":" (e.g. IPv6) which is illegal in a Message-ID, use $domain */
520 if(!sqGetGlobalVar('SERVER_NAME', $SERVER_NAME, SQ_SERVER) ||
521 strpos($SERVER_NAME,':') !== FALSE) {
60a46e65 522 $SERVER_NAME = $domain;
78f39e78 523 }
60a46e65 524
78f39e78 525 sqGetGlobalVar('REMOTE_ADDR', $REMOTE_ADDR, SQ_SERVER);
526 sqGetGlobalVar('REMOTE_PORT', $REMOTE_PORT, SQ_SERVER);
527 sqGetGlobalVar('REMOTE_HOST', $REMOTE_HOST, SQ_SERVER);
528 sqGetGlobalVar('HTTP_VIA', $HTTP_VIA, SQ_SERVER);
529 sqGetGlobalVar('HTTP_X_FORWARDED_FOR', $HTTP_X_FORWARDED_FOR, SQ_SERVER);
60a46e65 530
78f39e78 531 $rn = "\r\n";
223872cb 532
78f39e78 533 /* This creates an RFC 822 date */
867fed37 534 $date = date('D, j M Y H:i:s ', time()) . $this->timezone();
49c7f411 535
78f39e78 536 /* Create a message-id */
10adeb76 537 $message_id = 'MESSAGE ID GENERATION ERROR! PLEASE CONTACT SQUIRRELMAIL DEVELOPERS';
538 if (empty($rfc822_header->message_id)) {
539 $message_id = '<';
540 /* user-specifc data to decrease collision chance */
541 $seed_data = $username . '.';
542 $seed_data .= (!empty($REMOTE_PORT) ? $REMOTE_PORT . '.' : '');
543 $seed_data .= (!empty($REMOTE_ADDR) ? $REMOTE_ADDR . '.' : '');
544 /* add the current time in milliseconds and randomness */
545 $seed_data .= uniqid(mt_rand(),true);
546 /* put it through one-way hash and add it to the ID */
547 $message_id .= md5($seed_data) . '.squirrel@' . $SERVER_NAME .'>';
548 }
b67d61ee 549
78f39e78 550 /* Make an RFC822 Received: line */
551 if (isset($REMOTE_HOST)) {
552 $received_from = "$REMOTE_HOST ([$REMOTE_ADDR])";
553 } else {
554 $received_from = $REMOTE_ADDR;
555 }
556 if (isset($HTTP_VIA) || isset ($HTTP_X_FORWARDED_FOR)) {
557 if (!isset($HTTP_X_FORWARDED_FOR) || $HTTP_X_FORWARDED_FOR == '') {
558 $HTTP_X_FORWARDED_FOR = 'unknown';
559 }
560 $received_from .= " (proxying for $HTTP_X_FORWARDED_FOR)";
561 }
562 $header = array();
432db2fc 563
564 /**
565 * SquirrelMail header
566 *
567 * This Received: header provides information that allows to track
568 * user and machine that was used to send email. Don't remove it
569 * unless you understand all possible forging issues or your
570 * webmail installation does not prevent changes in user's email address.
571 * See SquirrelMail bug tracker #847107 for more details about it.
bb08da84 572 *
573 * Add $hide_squirrelmail_header as a candidate for config_local.php
574 * to allow completely hiding SquirrelMail participation in message
539a323f 575 * processing; This is dangerous, especially if users can modify their
e930c9fe 576 * account information, as it makes mapping a sent message back to the
577 * original sender almost impossible.
432db2fc 578 */
e930c9fe 579 $show_sm_header = ( defined('hide_squirrelmail_header') ? ! hide_squirrelmail_header : 1 );
bb08da84 580
10adeb76 581 // FIXME: The following headers may generate slightly differently between the message sent to the destination and that stored in the Sent folder because this code will be called before both actions. This is not necessarily a big problem, but other headers such as Message-ID and Date are preserved between both actions
bb08da84 582 if ( $show_sm_header ) {
583 if (isset($encode_header_key) &&
432db2fc 584 trim($encode_header_key)!='') {
585 // use encoded headers, if encryption key is set and not empty
b81efcb4 586 $header[] = 'X-Squirrel-UserHash: '.OneTimePadEncrypt($username,base64_encode($encode_header_key)).$rn;
587 $header[] = 'X-Squirrel-FromHash: '.OneTimePadEncrypt($this->ip2hex($REMOTE_ADDR),base64_encode($encode_header_key)).$rn;
432db2fc 588 if (isset($HTTP_X_FORWARDED_FOR))
b81efcb4 589 $header[] = 'X-Squirrel-ProxyHash:'.OneTimePadEncrypt($this->ip2hex($HTTP_X_FORWARDED_FOR),base64_encode($encode_header_key)).$rn;
bb08da84 590 } else {
432db2fc 591 // use default received headers
592 $header[] = "Received: from $received_from" . $rn;
593 if ($edit_identity || ! isset($hide_auth_header) || ! $hide_auth_header)
594 $header[] = " (SquirrelMail authenticated user $username)" . $rn;
595 $header[] = " by $SERVER_NAME with HTTP;" . $rn;
596 $header[] = " $date" . $rn;
bb08da84 597 }
35aaf666 598 }
432db2fc 599
59387d1c 600 /* Insert the rest of the header fields */
10adeb76 601
602 if (!empty($rfc822_header->message_id)) {
603 $header[] = 'Message-ID: '. $rfc822_header->message_id . $rn;
604 } else {
605 $header[] = 'Message-ID: '. $message_id . $rn;
606 $rfc822_header->message_id = $message_id;
607 }
608
ea87de81 609 if (is_object($reply_rfc822_header) &&
b4316b34 610 isset($reply_rfc822_header->message_id) &&
611 $reply_rfc822_header->message_id) {
78f39e78 612 $rep_message_id = $reply_rfc822_header->message_id;
78f39e78 613 $header[] = 'In-Reply-To: '.$rep_message_id . $rn;
10adeb76 614 $rfc822_header->in_reply_to = $rep_message_id;
78f39e78 615 $references = $this->calculate_references($reply_rfc822_header);
616 $header[] = 'References: '.$references . $rn;
10adeb76 617 $rfc822_header->references = $references;
78f39e78 618 }
10adeb76 619
620 if (!empty($rfc822_header->date) && $rfc822_header->date != -1) {
621 $header[] = 'Date: '. $rfc822_header->date . $rn;
622 } else {
623 $header[] = "Date: $date" . $rn;
624 $rfc822_header->date = $date;
625 }
626
59387d1c 627 $header[] = 'Subject: '.encodeHeader($rfc822_header->subject) . $rn;
ac47827c 628 $header[] = 'From: '. $rfc822_header->getAddr_s('from',",$rn ",true) . $rn;
629
ea87de81 630 // folding address list [From|To|Cc|Bcc] happens by using ",$rn<space>"
631 // as delimiter
ac47827c 632 // Do not use foldLine for that.
633
634 // RFC2822 if from contains more then 1 address
59387d1c 635 if (count($rfc822_header->from) > 1) {
215de78c 636 $header[] = 'Sender: '. $rfc822_header->getAddr_s('sender',',',true) . $rn;
78f39e78 637 }
638 if (count($rfc822_header->to)) {
ac47827c 639 $header[] = 'To: '. $rfc822_header->getAddr_s('to',",$rn ",true) . $rn;
78f39e78 640 }
641 if (count($rfc822_header->cc)) {
ac47827c 642 $header[] = 'Cc: '. $rfc822_header->getAddr_s('cc',",$rn ",true) . $rn;
78f39e78 643 }
644 if (count($rfc822_header->reply_to)) {
215de78c 645 $header[] = 'Reply-To: '. $rfc822_header->getAddr_s('reply_to',',',true) . $rn;
78f39e78 646 }
647 /* Sendmail should return true. Default = false */
648 $bcc = $this->getBcc();
649 if (count($rfc822_header->bcc)) {
ac47827c 650 $s = 'Bcc: '. $rfc822_header->getAddr_s('bcc',",$rn ",true) . $rn;
78f39e78 651 if (!$bcc) {
78f39e78 652 $raw_length += strlen($s);
653 } else {
654 $header[] = $s;
655 }
656 }
72b004e6 657 /* Identify SquirrelMail */
b37e457f 658 $header[] = 'User-Agent: SquirrelMail/' . SM_VERSION . $rn;
78f39e78 659 /* Do the MIME-stuff */
660 $header[] = 'MIME-Version: 1.0' . $rn;
661 $contenttype = 'Content-Type: '. $rfc822_header->content_type->type0 .'/'.
59387d1c 662 $rfc822_header->content_type->type1;
78f39e78 663 if (count($rfc822_header->content_type->properties)) {
664 foreach ($rfc822_header->content_type->properties as $k => $v) {
665 if ($k && $v) {
72b004e6 666 $contenttype .= ';' .$k.'='.$v;
78f39e78 667 }
668 }
669 }
59387d1c 670 $header[] = $contenttype . $rn;
78f39e78 671 if ($encoding = $rfc822_header->encoding) {
23301b33 672 $header[] = 'Content-Transfer-Encoding: ' . $encoding . $rn;
72b004e6 673 }
539a323f 674 if (isset($rfc822_header->dnt) && $rfc822_header->dnt) {
72b004e6 675 $dnt = $rfc822_header->getAddr_s('dnt');
78f39e78 676 /* Pegasus Mail */
677 $header[] = 'X-Confirm-Reading-To: '.$dnt. $rn;
678 /* RFC 2298 */
679 $header[] = 'Disposition-Notification-To: '.$dnt. $rn;
680 }
681 if ($rfc822_header->priority) {
d1db3699 682 switch($rfc822_header->priority)
78f39e78 683 {
d1db3699 684 case 1:
91e0dccc 685 $header[] = 'X-Priority: 1 (Highest)'.$rn;
686 $header[] = 'Importance: High'. $rn; break;
d1db3699 687 case 5:
91e0dccc 688 $header[] = 'X-Priority: 5 (Lowest)'.$rn;
689 $header[] = 'Importance: Low'. $rn; break;
78f39e78 690 default: break;
691 }
692 }
72b004e6 693 /* Insert headers from the $more_headers array */
78f39e78 694 if(count($rfc822_header->more_headers)) {
695 reset($rfc822_header->more_headers);
696 foreach ($rfc822_header->more_headers as $k => $v) {
697 $header[] = $k.': '.$v .$rn;
698 }
699 }
700 $cnt = count($header);
701 $hdr_s = '';
5d2a7b15 702
78f39e78 703 for ($i = 0 ; $i < $cnt ; $i++) {
5d2a7b15 704 $sKey = substr($header[$i],0,strpos($header[$i],':'));
705 switch ($sKey)
706 {
707 case 'Message-ID':
708 case 'In-Reply_To':
709 $hdr_s .= $header[$i];
710 break;
711 case 'References':
712 $sRefs = substr($header[$i],12);
713 $aRefs = explode(' ',$sRefs);
714 $sLine = 'References:';
715 foreach ($aRefs as $sReference) {
cc201b46 716 if ( trim($sReference) == '' ) {
717 /* Don't add spaces. */
718 } elseif (strlen($sLine)+strlen($sReference) >76) {
5d2a7b15 719 $hdr_s .= $sLine;
720 $sLine = $rn . ' ' . $sReference;
721 } else {
722 $sLine .= ' '. $sReference;
723 }
724 }
725 $hdr_s .= $sLine;
726 break;
ac47827c 727 case 'To':
728 case 'Cc':
729 case 'Bcc':
730 case 'From':
731 $hdr_s .= $header[$i];
732 break;
5d2a7b15 733 default: $hdr_s .= $this->foldLine($header[$i], 78, str_pad('',4)); break;
734 }
78f39e78 735 }
78f39e78 736 $header = $hdr_s;
737 $header .= $rn; /* One blank line to separate header and body */
738 $raw_length += strlen($header);
739 return $header;
4960ec8e 740 }
741
72b004e6 742 /**
743 * function foldLine - for cleanly folding of headerlines
744 *
745 * @param string $line
746 * @param integer $length length to fold the line at
747 * @param string $pre prefix the line with...
748 *
3a70ee56 749 * @return string $line folded line with trailing CRLF
72b004e6 750 */
1274f430 751 function foldLine($line, $length, $pre='') {
e4f9307a 752 $line = substr($line,0, -2);
fb1d6cb6 753 $length -= 2; /* do not fold between \r and \n */
754 $cnt = strlen($line);
755 if ($cnt > $length) { /* try folding */
756 $fold_string = "\r\n " . $pre;
757 $bFirstFold = false;
758 $aFoldLine = array();
759 while (strlen($line) > $length) {
760 $fold = false;
761 /* handle encoded parts */
7060c7f0 762 if (preg_match('/(=\?([^?]*)\?(Q|B)\?([^?]*)\?=)(\s+|.*)/Ui',$line,$regs)) {
fb1d6cb6 763 $fold_tmp = $regs[1];
7060c7f0 764 if (!trim($regs[5])) {
765 $fold_tmp .= $regs[5];
766 }
fb1d6cb6 767 $iPosEnc = strpos($line,$fold_tmp);
768 $iLengthEnc = strlen($fold_tmp);
c422e824 769 $iPosEncEnd = $iPosEnc+$iLengthEnc;
770 if ($iPosEnc < $length && (($iPosEncEnd) > $length)) {
fb1d6cb6 771 $fold = true;
772 /* fold just before the start of the encoded string */
7060c7f0 773 if ($iPosEnc) {
774 $aFoldLine[] = substr($line,0,$iPosEnc);
775 }
fb1d6cb6 776 $line = substr($line,$iPosEnc);
777 if (!$bFirstFold) {
778 $bFirstFold = true;
779 $length -= strlen($fold_string);
780 }
781 if ($iLengthEnc > $length) { /* place the encoded
782 string on a separate line and do not fold inside it*/
223872cb 783 /* minimize foldstring */
784 $fold_string = "\r\n ";
785 $aFoldLine[] = substr($line,0,$iLengthEnc);
786 $line = substr($line,$iLengthEnc);
72b004e6 787 }
c422e824 788 } else if ($iPosEnc < $length) { /* the encoded string fits into the foldlength */
fb1d6cb6 789 /*remainder */
fb1d6cb6 790 $sLineRem = substr($line,$iPosEncEnd,$length - $iPosEncEnd);
c422e824 791 if (preg_match('/^(=\?([^?]*)\?(Q|B)\?([^?]*)\?=)(.*)/Ui',$sLineRem) || !preg_match('/[=,;\s]/',$sLineRem)) {
fb1d6cb6 792 /*impossible to fold clean in the next part -> fold after the enc string */
7060c7f0 793 $aFoldLine[] = substr($line,0,$iPosEncEnd);
794 $line = substr($line,$iPosEncEnd);
fb1d6cb6 795 $fold = true;
796 if (!$bFirstFold) {
797 $bFirstFold = true;
798 $length -= strlen($fold_string);
799 }
72b004e6 800 }
fb1d6cb6 801 }
802 }
803 if (!$fold) {
804 $line_tmp = substr($line,0,$length);
805 $iFoldPos = false;
806 /* try to fold at logical places */
807 switch (true)
808 {
809 case ($iFoldPos = strrpos($line_tmp,',')): break;
810 case ($iFoldPos = strrpos($line_tmp,';')): break;
811 case ($iFoldPos = strrpos($line_tmp,' ')): break;
812 case ($iFoldPos = strrpos($line_tmp,'=')): break;
813 default: break;
814 }
72b004e6 815
fb1d6cb6 816 if (!$iFoldPos) { /* clean folding didn't work */
817 $iFoldPos = $length;
818 }
819 $aFoldLine[] = substr($line,0,$iFoldPos+1);
820 $line = substr($line,$iFoldPos+1);
821 if (!$bFirstFold) {
822 $bFirstFold = true;
823 $length -= strlen($fold_string);
824 }
825 }
826 }
827 /*$reconstruct the line */
828 if ($line) {
829 $aFoldLine[] = $line;
830 }
831 $line = implode($fold_string,$aFoldLine);
832 }
833 return $line."\r\n";
834 }
3b53d87f 835
72b004e6 836 /**
837 * function mimeBoundary - calculates the mime boundary to use
838 *
839 * This function will generate a random mime boundary base part
840 * for the message if the boundary has not already been set.
841 *
3a70ee56 842 * @return string $mimeBoundaryString random mime boundary string
72b004e6 843 */
59387d1c 844 function mimeBoundary () {
78f39e78 845 static $mimeBoundaryString;
3b53d87f 846
78f39e78 847 if ( !isset( $mimeBoundaryString ) ||
848 $mimeBoundaryString == '') {
849 $mimeBoundaryString = '----=_' . date( 'YmdHis' ) . '_' .
850 mt_rand( 10000, 99999 );
851 }
852 return $mimeBoundaryString;
3b53d87f 853 }
854
72b004e6 855 /**
856 * function timezone - Time offset for correct timezone
857 *
3a70ee56 858 * @return string $result with timezone and offset
72b004e6 859 */
59387d1c 860 function timezone () {
78f39e78 861 global $invert_time;
862
863 $diff_second = date('Z');
864 if ($invert_time) {
865 $diff_second = - $diff_second;
866 }
867 if ($diff_second > 0) {
868 $sign = '+';
869 } else {
870 $sign = '-';
871 }
872 $diff_second = abs($diff_second);
873 $diff_hour = floor ($diff_second / 3600);
874 $diff_minute = floor (($diff_second-3600*$diff_hour) / 60);
875 $zonename = '('.strftime('%Z').')';
72b004e6 876 $result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute,
3b53d87f 877 $zonename);
78f39e78 878 return ($result);
59387d1c 879 }
3b53d87f 880
72b004e6 881 /**
f2ac3325 882 * function calculate_references - calculate correct References string
883 * Adds the current message ID, and makes sure it doesn't grow forever,
884 * to that extent it drops message-ID's in a smart way until the string
885 * length is under the recommended value of 1000 ("References: <986>\r\n").
886 * It always keeps the first and the last three ID's.
72b004e6 887 *
888 * @param Rfc822Header $hdr message header to calculate from
889 *
f2ac3325 890 * @return string $refer concatenated and trimmed References string
72b004e6 891 */
1274f430 892 function calculate_references($hdr) {
f2ac3325 893 $aReferences = preg_split('/\s+/', $hdr->references);
78f39e78 894 $message_id = $hdr->message_id;
895 $in_reply_to = $hdr->in_reply_to;
539a323f 896
f2ac3325 897 // if References already exists, add the current message ID at the end.
898 // no References exists; if we know a IRT, add that aswell
899 if (count($aReferences) == 0 && $in_reply_to) {
900 $aReferences[] = $in_reply_to;
901 }
902 $aReferences[] = $message_id;
903
904 // sanitize the array: trim whitespace, remove dupes
86e6a9eb 905 array_walk($aReferences, 'sq_trim_value');
f2ac3325 906 $aReferences = array_unique($aReferences);
907
908 while ( count($aReferences) > 4 && strlen(implode(' ', $aReferences)) >= 986 ) {
909 $aReferences = array_merge(array_slice($aReferences,0,1),array_slice($aReferences,2));
78f39e78 910 }
f2ac3325 911 return implode(' ', $aReferences);
912 }
913
432db2fc 914 /**
915 * Converts ip address to hexadecimal string
916 *
917 * Function is used to convert ipv4 and ipv6 addresses to hex strings.
918 * It removes all delimiter symbols from ip addresses, converts decimal
919 * ipv4 numbers to hex and pads strings in order to present full length
ea87de81 920 * address. ipv4 addresses are represented as 8 byte strings, ipv6 addresses
432db2fc 921 * are represented as 32 byte string.
922 *
923 * If function fails to detect address format, it returns unprocessed string.
924 * @param string $string ip address string
925 * @return string processed ip address string
94511d23 926 * @since 1.5.1 and 1.4.5
432db2fc 927 */
928 function ip2hex($string) {
929 if (preg_match("/^(\d+)\.(\d+)\.(\d+)\.(\d+)$/",$string,$match)) {
930 // ipv4 address
931 $ret = str_pad(dechex($match[1]),2,'0',STR_PAD_LEFT)
932 . str_pad(dechex($match[2]),2,'0',STR_PAD_LEFT)
933 . str_pad(dechex($match[3]),2,'0',STR_PAD_LEFT)
934 . str_pad(dechex($match[4]),2,'0',STR_PAD_LEFT);
935 } elseif (preg_match("/^([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)\:([0-9a-h]+)$/i",$string,$match)) {
936 // full ipv6 address
937 $ret = str_pad($match[1],4,'0',STR_PAD_LEFT)
938 . str_pad($match[2],4,'0',STR_PAD_LEFT)
939 . str_pad($match[3],4,'0',STR_PAD_LEFT)
940 . str_pad($match[4],4,'0',STR_PAD_LEFT)
941 . str_pad($match[5],4,'0',STR_PAD_LEFT)
942 . str_pad($match[6],4,'0',STR_PAD_LEFT)
943 . str_pad($match[7],4,'0',STR_PAD_LEFT)
944 . str_pad($match[8],4,'0',STR_PAD_LEFT);
945 } elseif (preg_match("/^\:\:([0-9a-h\:]+)$/i",$string,$match)) {
946 // short ipv6 with all starting symbols nulled
947 $aAddr=explode(':',$match[1]);
948 $ret='';
949 foreach ($aAddr as $addr) {
950 $ret.=str_pad($addr,4,'0',STR_PAD_LEFT);
951 }
952 $ret=str_pad($ret,32,'0',STR_PAD_LEFT);
953 } elseif (preg_match("/^([0-9a-h\:]+)::([0-9a-h\:]+)$/i",$string,$match)) {
954 // short ipv6 with middle part nulled
955 $aStart=explode(':',$match[1]);
956 $sStart='';
957 foreach($aStart as $addr) {
958 $sStart.=str_pad($addr,4,'0',STR_PAD_LEFT);
959 }
960 $aEnd = explode(':',$match[2]);
961 $sEnd='';
962 foreach($aEnd as $addr) {
963 $sEnd.=str_pad($addr,4,'0',STR_PAD_LEFT);
964 }
965 $ret = $sStart
966 . str_pad('',(32 - strlen($sStart . $sEnd)),'0',STR_PAD_LEFT)
967 . $sEnd;
968 } else {
969 // unknown addressing
970 $ret = $string;
971 }
972 return $ret;
973 }
59387d1c 974}
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