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[squirrelmail.git] / class / mime / Message.class.php
1 <?php
2
3 /**
4 * Message.class.php
5 *
6 * This file contains functions needed to handle mime messages.
7 *
8 * @copyright 2003-2018 The SquirrelMail Project Team
9 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
10 * @version $Id$
11 * @package squirrelmail
12 * @subpackage mime
13 * @since 1.3.2
14 */
15
16 /**
17 * The object that contains a message.
18 *
19 * message is the object that contains messages. It is a recursive object in
20 * that through the $entities variable, it can contain more objects of type
21 * message. See documentation in mime.txt for a better description of how this
22 * works.
23 * @package squirrelmail
24 * @subpackage mime
25 * @since 1.3.0
26 */
27 class Message {
28 /**
29 * rfc822header object
30 * @var object
31 */
32 var $rfc822_header = '';
33 /**
34 * MessageHeader object
35 * @var object
36 */
37 var $mime_header = '';
38 /**
39 * @var mixed
40 */
41 var $flags = '';
42 /**
43 * Media type
44 * @var string
45 */
46 var $type0='';
47 /**
48 * Media subtype
49 * @var string
50 */
51 var $type1='';
52 /**
53 * Nested mime parts
54 * @var array
55 */
56 var $entities = array();
57 /**
58 * Message part id
59 * @var string
60 */
61 var $entity_id = '';
62 /**
63 * Parent message part id
64 * @var string
65 */
66 var $parent_ent;
67 /**
68 * @var mixed
69 */
70 var $entity;
71 /**
72 * @var mixed
73 */
74 var $parent = '';
75 /**
76 * @var string
77 */
78 var $decoded_body='';
79 /**
80 * Message \seen status
81 * @var boolean
82 */
83 var $is_seen = 0;
84 /**
85 * Message \answered status
86 * @var boolean
87 */
88 var $is_answered = 0;
89 /**
90 * Message forward status
91 * @var boolean
92 */
93 var $is_forwarded = 0;
94 /**
95 * Message \deleted status
96 * @var boolean
97 */
98 var $is_deleted = 0;
99 /**
100 * Message \flagged status
101 * @var boolean
102 */
103 var $is_flagged = 0;
104 /**
105 * Message mdn status
106 * @var boolean
107 */
108 var $is_mdnsent = 0;
109 /**
110 * Message text body
111 * @var string
112 */
113 var $body_part = '';
114 /**
115 * Message part offset
116 * for fetching body parts out of raw messages
117 * @var integer
118 */
119 var $offset = 0;
120 /**
121 * Message part length
122 * for fetching body parts out of raw messages
123 * @var integer
124 */
125 var $length = 0;
126 /**
127 * Local attachment filename location where the tempory attachment is
128 * stored. For use in delivery class.
129 * @var string
130 */
131 var $att_local_name = '';
132
133 /**
134 * @param string $ent entity id
135 */
136 function setEnt($ent) {
137 $this->entity_id= $ent;
138 }
139
140 /**
141 * Add nested message part
142 * @param object $msg
143 */
144 function addEntity ($msg) {
145 $this->entities[] = $msg;
146 }
147
148 /**
149 * Get file name used for mime part
150 * @return string file name
151 * @since 1.3.2
152 */
153 function getFilename() {
154 $filename = '';
155 $header = $this->header;
156 if (is_object($header->disposition)) {
157 $filename = $header->disposition->getProperty('filename');
158 if (trim($filename) == '') {
159 $name = decodeHeader($header->disposition->getProperty('name'));
160 if (!trim($name)) {
161 $name = $header->getParameter('name');
162 if(!trim($name)) {
163 if (!trim( $header->id )) {
164 $filename = 'untitled-[' . $this->entity_id . ']' . '.' . strtolower($header->type1);
165 } else {
166 $filename = 'cid: ' . $header->id . '.' . strtolower($header->type1);
167 }
168 } else {
169 $filename = $name;
170 }
171 } else {
172 $filename = $name;
173 }
174 }
175 } else {
176 $filename = $header->getParameter('filename');
177 if (!trim($filename)) {
178 $filename = $header->getParameter('name');
179 if (!trim($filename)) {
180 if (!trim( $header->id )) {
181 $filename = 'untitled-[' . $this->entity_id . ']' . '.' . strtolower($header->type1);
182 } else {
183 $filename = 'cid: ' . $header->id . '.' . strtolower($header->type1);
184 }
185 }
186 }
187 }
188 return $filename;
189 }
190
191 /**
192 * Add header object to message object.
193 * WARNING: Unfinished code. Don't expect it to work in older sm versions.
194 * @param mixed $read array or string with message headers
195 * @todo FIXME: rfc822header->parseHeader() does not return rfc822header object
196 */
197 function addRFC822Header($read) {
198 $header = new Rfc822Header();
199 $this->rfc822_header = $header->parseHeader($read);
200 }
201
202 /**
203 * @param string $ent
204 * @return mixed (object or string?)
205 */
206 function getEntity($ent) {
207 $cur_ent = $this->entity_id;
208 $msg = $this;
209 if (($cur_ent == '') || ($cur_ent == '0')) {
210 $cur_ent_a = array();
211 } else {
212 $cur_ent_a = explode('.', $this->entity_id);
213 }
214 $ent_a = explode('.', $ent);
215
216 for ($i = 0,$entCount = count($ent_a) - 1; $i < $entCount; ++$i) {
217 if (isset($cur_ent_a[$i]) && ($cur_ent_a[$i] != $ent_a[$i])) {
218 $msg = $msg->parent;
219 $cur_ent_a = explode('.', $msg->entity_id);
220 --$i;
221 } else if (!isset($cur_ent_a[$i])) {
222 if (isset($msg->entities[($ent_a[$i]-1)])) {
223 $msg = $msg->entities[($ent_a[$i]-1)];
224 } else {
225 $msg = $msg->entities[0];
226 }
227 }
228 if (($msg->type0 == 'message') && ($msg->type1 == 'rfc822')) {
229 /*this is a header for a message/rfc822 entity */
230 $msg = $msg->entities[0];
231 }
232 }
233
234 if (($msg->type0 == 'message') && ($msg->type1 == 'rfc822')) {
235 /*this is a header for a message/rfc822 entity */
236 $msg = $msg->entities[0];
237 }
238
239 if (isset($msg->entities[($ent_a[$entCount])-1])) {
240 if (is_object($msg->entities[($ent_a[$entCount])-1])) {
241 $msg = $msg->entities[($ent_a[$entCount]-1)];
242 }
243 }
244
245 return $msg;
246 }
247
248 /**
249 * Set message body
250 * @param string $s message body
251 */
252 function setBody($s) {
253 $this->body_part = $s;
254 }
255
256 /**
257 * Clean message object
258 */
259 function clean_up() {
260 $msg = $this;
261 $msg->body_part = '';
262
263 foreach ($msg->entities as $m) {
264 $m->clean_up();
265 }
266 }
267
268 /**
269 * @return string
270 */
271 function getMailbox() {
272 $msg = $this;
273 while (is_object($msg->parent)) {
274 $msg = $msg->parent;
275 }
276 return $msg->mailbox;
277 }
278
279 /*
280 * Bodystructure parser, a recursive function for generating the
281 * entity-tree with all the mime-parts.
282 *
283 * It follows RFC2060 and stores all the described fields in the
284 * message object.
285 *
286 * Question/Bugs:
287 *
288 * Ask for me (Marc Groot Koerkamp, stekkel@users.sourceforge.net)
289 * @param string $read
290 * @param integer $i
291 * @param mixed $sub_msg
292 * @return object Message object
293 * @todo define argument and return types
294 */
295 static function parseStructure($read, &$i, $sub_msg = '') {
296 $msg = Message::parseBodyStructure($read, $i, $sub_msg);
297 if($msg) $msg->setEntIds($msg,false,0);
298 return $msg;
299 }
300
301 /**
302 * @param object $msg
303 * @param mixed $init
304 * @param integer $i
305 * @todo document me
306 * @since 1.4.0
307 */
308 function setEntIds(&$msg,$init=false,$i=0) {
309 $iCnt = count($msg->entities);
310 if ($init !==false) {
311 $iEntSub = $i+1;
312 if ($msg->parent->type0 == 'message' &&
313 $msg->parent->type1 == 'rfc822' &&
314 $msg->type0 == 'multipart') {
315 $iEntSub = '0';
316 }
317 if ($init) {
318 $msg->entity_id = "$init.$iEntSub";
319 } else {
320 $msg->entity_id = $iEntSub;
321 }
322 } else if ($iCnt) {
323 $msg->entity_id='0';
324 } else {
325 $msg->entity_id='1';
326 }
327 for ($i=0;$i<$iCnt;++$i) {
328 $msg->entities[$i]->parent =& $msg;
329 if (strrchr($msg->entity_id, '.') != '.0') {
330 $msg->entities[$i]->setEntIds($msg->entities[$i],$msg->entity_id,$i);
331 } else {
332 $msg->entities[$i]->setEntIds($msg->entities[$i],$msg->parent->entity_id,$i);
333 }
334 }
335 }
336
337 /**
338 * @param string $read
339 * @param integer $i
340 * @param mixed $sub_msg
341 * @return object Message object
342 * @todo document me
343 * @since 1.4.0 (code was part of parseStructure() in 1.3.x)
344 */
345 static function parseBodyStructure($read, &$i, $sub_msg = '') {
346 $arg_no = 0;
347 $arg_a = array();
348 if ($sub_msg) {
349 $message = $sub_msg;
350 } else {
351 $message = new Message();
352 }
353
354 for ($cnt = strlen($read); $i < $cnt; ++$i) {
355 $char = strtoupper($read{$i});
356 switch ($char) {
357 case '(':
358 switch($arg_no) {
359 case 0:
360 if (!isset($msg)) {
361 $msg = new Message();
362 $hdr = new MessageHeader();
363 $hdr->type0 = 'text';
364 $hdr->type1 = 'plain';
365 $hdr->encoding = '7bit';
366 $msg->header = $hdr;
367 } else {
368 $msg->header->type0 = 'multipart';
369 $msg->type0 = 'multipart';
370 while ($read{$i} == '(') {
371 $msg->addEntity($msg->parseBodyStructure($read, $i, $msg));
372 }
373 }
374 break;
375 case 1:
376 /* multipart properties */
377 ++$i;
378 $arg_a[] = $msg->parseProperties($read, $i);
379 ++$arg_no;
380 break;
381 case 2:
382 if (isset($msg->type0) && ($msg->type0 == 'multipart')) {
383 ++$i;
384 $arg_a[] = $msg->parseDisposition($read, $i);
385 } else { /* properties */
386 $arg_a[] = $msg->parseProperties($read, $i);
387 }
388 ++$arg_no;
389 break;
390 case 3:
391 if (isset($msg->type0) && ($msg->type0 == 'multipart')) {
392 ++$i;
393 $arg_a[]= $msg->parseLanguage($read, $i);
394 }
395 case 7:
396 if (($arg_a[0] == 'message') && ($arg_a[1] == 'rfc822')) {
397 $msg->header->type0 = $arg_a[0];
398 $msg->header->type1 = $arg_a[1];
399 $msg->type0 = $arg_a[0];
400 $msg->type1 = $arg_a[1];
401 $rfc822_hdr = new Rfc822Header();
402 $msg->rfc822_header = $msg->parseEnvelope($read, $i, $rfc822_hdr);
403 while (($i < $cnt) && ($read{$i} != '(')) {
404 ++$i;
405 }
406 $msg->addEntity($msg->parseBodyStructure($read, $i,$msg));
407 }
408 break;
409 case 8:
410 ++$i;
411 $arg_a[] = $msg->parseDisposition($read, $i);
412 ++$arg_no;
413 break;
414 case 9:
415 ++$i;
416 if (($arg_a[0] == 'text') || (($arg_a[0] == 'message') && ($arg_a[1] == 'rfc822'))) {
417 $arg_a[] = $msg->parseDisposition($read, $i);
418 } else {
419 $arg_a[] = $msg->parseLanguage($read, $i);
420 }
421 ++$arg_no;
422 break;
423 case 10:
424 if (($arg_a[0] == 'text') || (($arg_a[0] == 'message') && ($arg_a[1] == 'rfc822'))) {
425 ++$i;
426 $arg_a[] = $msg->parseLanguage($read, $i);
427 } else {
428 $i = $msg->parseParenthesis($read, $i);
429 $arg_a[] = ''; /* not yet described in rfc2060 */
430 }
431 ++$arg_no;
432 break;
433 default:
434 /* unknown argument, skip this part */
435 $i = $msg->parseParenthesis($read, $i);
436 $arg_a[] = '';
437 ++$arg_no;
438 break;
439 } /* switch */
440 break;
441 case '"':
442 /* inside an entity -> start processing */
443 $arg_s = $msg->parseQuote($read, $i);
444 ++$arg_no;
445 if ($arg_no < 3) {
446 $arg_s = strtolower($arg_s); /* type0 and type1 */
447 }
448 $arg_a[] = $arg_s;
449 break;
450 case 'n':
451 case 'N':
452 /* probably NIL argument */
453 $tmpnil = strtoupper(substr($read, $i, 4));
454 if ($tmpnil == 'NIL ' || $tmpnil == 'NIL)') {
455 $arg_a[] = '';
456 ++$arg_no;
457 $i += 2;
458 }
459 break;
460 case '{':
461 /* process the literal value */
462 $arg_a[] = $msg->parseLiteral($read, $i);
463 ++$arg_no;
464 break;
465 case '0':
466 case is_numeric($read{$i}):
467 /* process integers */
468 if ($read{$i} == ' ') { break; }
469 ++$arg_no;
470 if (preg_match('/^([0-9]+).*/',substr($read,$i), $regs)) {
471 $i += strlen($regs[1])-1;
472 $arg_a[] = $regs[1];
473 } else {
474 $arg_a[] = 0;
475 }
476 break;
477 case ')':
478 $multipart = (isset($msg->type0) && ($msg->type0 == 'multipart'));
479 if (!$multipart) {
480 $shifted_args = (($arg_a[0] == 'text') || (($arg_a[0] == 'message') && ($arg_a[1] == 'rfc822')));
481 $hdr->type0 = $arg_a[0];
482 $hdr->type1 = $arg_a[1];
483
484 $msg->type0 = $arg_a[0];
485 $msg->type1 = $arg_a[1];
486 $arr = $arg_a[2];
487 if (is_array($arr)) {
488 $hdr->parameters = $arg_a[2];
489 }
490 $hdr->id = str_replace('<', '', str_replace('>', '', $arg_a[3]));
491 $hdr->description = $arg_a[4];
492 $hdr->encoding = strtolower($arg_a[5]);
493 $hdr->entity_id = $msg->entity_id;
494 $hdr->size = $arg_a[6];
495 if ($shifted_args) {
496 $hdr->lines = $arg_a[7];
497 $s = 1;
498 } else {
499 $s = 0;
500 }
501 $hdr->md5 = (isset($arg_a[7+$s]) ? $arg_a[7+$s] : $hdr->md5);
502 $hdr->disposition = (isset($arg_a[8+$s]) ? $arg_a[8+$s] : $hdr->disposition);
503 $hdr->language = (isset($arg_a[9+$s]) ? $arg_a[9+$s] : $hdr->language);
504 $msg->header = $hdr;
505 } else {
506 $hdr->type0 = 'multipart';
507 $hdr->type1 = $arg_a[0];
508 $msg->type0 = 'multipart';
509 $msg->type1 = $arg_a[0];
510 $hdr->parameters = (isset($arg_a[1]) ? $arg_a[1] : $hdr->parameters);
511 $hdr->disposition = (isset($arg_a[2]) ? $arg_a[2] : $hdr->disposition);
512 $hdr->language = (isset($arg_a[3]) ? $arg_a[3] : $hdr->language);
513 $msg->header = $hdr;
514 }
515 return $msg;
516 default: break;
517 } /* switch */
518 } /* for */
519 } /* parsestructure */
520
521 /**
522 * @param string $read
523 * @param integer $i
524 * @return array
525 */
526 function parseProperties($read, &$i) {
527 $properties = array();
528 $prop_name = '';
529
530 for (; $read{$i} != ')'; ++$i) {
531 $arg_s = '';
532 if ($read{$i} == '"') {
533 $arg_s = $this->parseQuote($read, $i);
534 } else if ($read{$i} == '{') {
535 $arg_s = $this->parseLiteral($read, $i);
536 }
537
538 if ($arg_s != '') {
539 if ($prop_name == '') {
540 $prop_name = strtolower($arg_s);
541 $properties[$prop_name] = '';
542 } else if ($prop_name != '') {
543 $properties[$prop_name] = $arg_s;
544 $prop_name = '';
545 }
546 }
547 }
548 return $this->handleRfc2231($properties);
549 }
550
551 /**
552 * Joins RFC-2231 continuations, converts encoding to RFC-2047 style
553 * @param array $properties
554 * @return array
555 */
556 function handleRfc2231($properties) {
557
558 /* STAGE 1: look for multi-line parameters, convert to the single line
559 form, and normalize values */
560
561 $cont = array();
562 foreach($properties as $key=>$value) {
563 /* Look for parameters followed by "*", a number, and an optional "*"
564 at the end. */
565 if (preg_match('/^(.*\*)(\d+)(|\*)$/', $key, $matches)) {
566 unset($properties[$key]);
567 $prop_name = $matches[1];
568 if (!isset($cont[$prop_name])) $cont[$prop_name] = array();
569
570 /* An asterisk at the end of parameter name indicates that there
571 may be an encoding information present, and the parameter
572 value is percent-hex encoded. If parameter is not encoded, we
573 encode it to simplify further processing.
574 */
575 if ($matches[3] == '') $value = rawurlencode($value);
576 /* Use the number from parameter name as segment index */
577 $cont[$prop_name][$matches[2]] = $value;
578 }
579 }
580 foreach($cont as $key=>$values) {
581 /* Sort segments of multi-line parameters by index number. */
582 ksort($values);
583 /* Join segments. We can do it safely, because:
584 - All segments are encoded.
585 - Per RFC-2231, chapter 4.1 notes.
586 */
587 $value = implode('', $values);
588 /* Add language and character set field delimiters if not present,
589 as required per RFC-2231, chapter 4.1, note #5. */
590 if (strpos($value, "'") === false) $value = "''".$value;
591 $properties[$key] = $value;
592 }
593
594 /* STAGE 2: Convert single line RFC-2231 encoded parameters, and
595 previously converted multi-line parameters, to RFC-2047 encoding */
596
597 foreach($properties as $key=>$value) {
598 if ($idx = strpos($key, '*')) {
599 unset($properties[$key]);
600 /* Extract the charset & language. */
601 $charset = substr($value,0,strpos($value,"'"));
602 $value = substr($value,strlen($charset)+1);
603 $language = substr($value,0,strpos($value,"'"));
604 $value = substr($value,strlen($language)+1);
605 /* No character set defaults to US-ASCII */
606 if (!$charset) $charset = 'US-ASCII';
607 if ($language) $language = '*'.$language;
608 /* Convert to RFC-2047 base64 encoded string. */
609 $properties[substr($key, 0, $idx)] = '=?'.$charset.$language.'?B?'.base64_encode(rawurldecode($value)).'?=';
610 }
611 }
612 return $properties;
613 }
614
615 /**
616 * @param string $read
617 * @param integer $i
618 * @param object $hdr MessageHeader object
619 * @return object MessageHeader object
620 */
621 function parseEnvelope($read, &$i, $hdr) {
622 $arg_no = 0;
623 $arg_a = array();
624 ++$i;
625 for ($cnt = strlen($read); ($i < $cnt) && ($read{$i} != ')'); ++$i) {
626 $char = strtoupper($read{$i});
627 switch ($char) {
628 case '"':
629 $arg_a[] = $this->parseQuote($read, $i);
630 ++$arg_no;
631 break;
632 case '{':
633 $arg_a[] = $this->parseLiteral($read, $i);
634 /* temp bugfix (SM 1.5 will have a working clean version)
635 too much work to implement that version right now */
636 // --$i;
637 ++$arg_no;
638 break;
639 case 'N':
640 /* probably NIL argument */
641 if (strtoupper(substr($read, $i, 3)) == 'NIL') {
642 $arg_a[] = '';
643 ++$arg_no;
644 $i += 2;
645 }
646 break;
647 case '(':
648 /* Address structure (with group support)
649 * Note: Group support is useless on SMTP connections
650 * because the protocol doesn't support it
651 */
652 $addr_a = array();
653 $group = '';
654 $a=0;
655 for (; $i < $cnt && $read{$i} != ')'; ++$i) {
656 if ($read{$i} == '(') {
657 $addr = $this->parseAddress($read, $i);
658 if (($addr->host == '') && ($addr->mailbox != '')) {
659 /* start of group */
660 $group = $addr->mailbox;
661 $group_addr = $addr;
662 $j = $a;
663 } else if ($group && ($addr->host == '') && ($addr->mailbox == '')) {
664 /* end group */
665 if ($a == ($j+1)) { /* no group members */
666 $group_addr->group = $group;
667 $group_addr->mailbox = '';
668 $group_addr->personal = "$group: Undisclosed recipients;";
669 $addr_a[] = $group_addr;
670 $group ='';
671 }
672 } else {
673 $addr->group = $group;
674 $addr_a[] = $addr;
675 }
676 ++$a;
677 }
678 }
679 $arg_a[] = $addr_a;
680 break;
681 default: break;
682 }
683 }
684
685 if (count($arg_a) > 9) {
686 $d = strtr($arg_a[0], array(' ' => ' '));
687 $d_parts = explode(' ', $d);
688 if (!$arg_a[1]) $arg_a[1] = _("(no subject)");
689
690 $hdr->date = getTimeStamp($d_parts); /* argument 1: date */
691 $hdr->date_unparsed = strtr($d,'<>',' '); /* original date */
692 $hdr->subject = $arg_a[1]; /* argument 2: subject */
693 $hdr->from = is_array($arg_a[2]) ? $arg_a[2][0] : ''; /* argument 3: from */
694 $hdr->sender = is_array($arg_a[3]) ? $arg_a[3][0] : ''; /* argument 4: sender */
695 $hdr->reply_to = is_array($arg_a[4]) ? $arg_a[4][0] : ''; /* argument 5: reply-to */
696 $hdr->to = $arg_a[5]; /* argument 6: to */
697 $hdr->cc = $arg_a[6]; /* argument 7: cc */
698 $hdr->bcc = $arg_a[7]; /* argument 8: bcc */
699 $hdr->in_reply_to = $arg_a[8]; /* argument 9: in-reply-to */
700 $hdr->message_id = $arg_a[9]; /* argument 10: message-id */
701 }
702 return $hdr;
703 }
704
705 /**
706 * @param string $read
707 * @param integer $i
708 * @return string
709 * @todo document me
710 */
711 function parseLiteral($read, &$i) {
712 $lit_cnt = '';
713 ++$i;
714 $iPos = strpos($read,'}',$i);
715 if ($iPos) {
716 $lit_cnt = substr($read, $i, $iPos - $i);
717 $i += strlen($lit_cnt) + 3; /* skip } + \r + \n */
718 /* Now read the literal */
719 $s = ($lit_cnt ? substr($read,$i,$lit_cnt): '');
720 $i += $lit_cnt;
721 /* temp bugfix (SM 1.5 will have a working clean version)
722 too much work to implement that version right now */
723 --$i;
724 } else { /* should never happen */
725 $i += 3; /* } + \r + \n */
726 $s = '';
727 }
728 return $s;
729 }
730
731 /**
732 * function parseQuote
733 *
734 * This extract the string value from a quoted string. After the end-quote
735 * character is found it returns the string. The offset $i when calling
736 * this function points to the first double quote. At the end it points to
737 * The ending quote. This function takes care of escaped double quotes.
738 * "some \"string\""
739 * ^ ^
740 * initial $i end position $i
741 *
742 * @param string $read
743 * @param integer $i offset in $read
744 * @return string string inbetween the double quotes
745 * @author Marc Groot Koerkamp
746 */
747 function parseQuote($read, &$i) {
748 $s = '';
749 $iPos = ++$i;
750 $iPosStart = $iPos;
751 while (true) {
752 $iPos = strpos($read,'"',$iPos);
753 if (!$iPos) break;
754 if ($iPos && $read{$iPos -1} != '\\') {
755 $s = substr($read,$i,($iPos-$i));
756 $i = $iPos;
757 break;
758 } else if ($iPos > 1 && $read{$iPos -1} == '\\' && $read{$iPos-2} == '\\') {
759 // This is an unique situation where the fast detection of the string
760 // fails. If the quote string ends with \\ then we need to iterate
761 // through the entire string to make sure we detect the unexcaped
762 // double quotes correctly.
763 $s = '';
764 $bEscaped = false;
765 $k = 0;
766 for ($j=$iPosStart,$iCnt=strlen($read);$j<$iCnt;++$j) {
767 $cChar = $read{$j};
768 switch ($cChar) {
769 case '\\':
770 $bEscaped = !$bEscaped;
771 $s .= $cChar;
772 break;
773 case '"':
774 if ($bEscaped) {
775 $s .= $cChar;
776 $bEscaped = false;
777 } else {
778 $i = $j;
779 break 3;
780 }
781 break;
782 default:
783 if ($bEscaped) {
784 $bEscaped = false;
785 }
786 $s .= $cChar;
787 break;
788 }
789 }
790 }
791 ++$iPos;
792 if ($iPos > strlen($read)) {
793 break;
794 }
795 }
796 return $s;
797 }
798
799 /**
800 * @param string $read
801 * @param integer $i
802 * @return object AddressStructure object
803 */
804 function parseAddress($read, &$i) {
805 $arg_a = array();
806 for (; $read{$i} != ')'; ++$i) {
807 $char = strtoupper($read{$i});
808 switch ($char) {
809 case '"': $arg_a[] = $this->parseQuote($read, $i); break;
810 case '{': $arg_a[] = $this->parseLiteral($read, $i); break;
811 case 'n':
812 case 'N':
813 if (strtoupper(substr($read, $i, 3)) == 'NIL') {
814 $arg_a[] = '';
815 $i += 2;
816 }
817 break;
818 default: break;
819 }
820 }
821
822 if (count($arg_a) == 4) {
823 $adr = new AddressStructure();
824 $adr->personal = $arg_a[0];
825 $adr->adl = $arg_a[1];
826 $adr->mailbox = $arg_a[2];
827 $adr->host = $arg_a[3];
828 } else {
829 $adr = '';
830 }
831 return $adr;
832 }
833
834 /**
835 * @param string $read
836 * @param integer $i
837 * @param object Disposition object or empty string
838 */
839 function parseDisposition($read, &$i) {
840 $arg_a = array();
841 for (; $read{$i} != ')'; ++$i) {
842 switch ($read{$i}) {
843 case '"': $arg_a[] = $this->parseQuote($read, $i); break;
844 case '{': $arg_a[] = $this->parseLiteral($read, $i); break;
845 case '(': $arg_a[] = $this->parseProperties($read, $i); break;
846 default: break;
847 }
848 }
849
850 if (isset($arg_a[0])) {
851 $disp = new Disposition($arg_a[0]);
852 if (isset($arg_a[1])) {
853 $disp->properties = $arg_a[1];
854 }
855 }
856 return (is_object($disp) ? $disp : '');
857 }
858
859 /**
860 * @param string $read
861 * @param integer $i
862 * @return object Language object or empty string
863 */
864 function parseLanguage($read, &$i) {
865 /* no idea how to process this one without examples */
866 $arg_a = array();
867
868 for (; $read{$i} != ')'; ++$i) {
869 switch ($read{$i}) {
870 case '"': $arg_a[] = $this->parseQuote($read, $i); break;
871 case '{': $arg_a[] = $this->parseLiteral($read, $i); break;
872 case '(': $arg_a[] = $this->parseProperties($read, $i); break;
873 default: break;
874 }
875 }
876
877 if (isset($arg_a[0])) {
878 $lang = new Language($arg_a[0]);
879 if (isset($arg_a[1])) {
880 $lang->properties = $arg_a[1];
881 }
882 }
883 return (is_object($lang) ? $lang : '');
884 }
885
886 /**
887 * Parse message text enclosed in parenthesis
888 * @param string $read
889 * @param integer $i
890 * @return integer
891 */
892 function parseParenthesis($read, $i) {
893 for ($i++; $read{$i} != ')'; ++$i) {
894 switch ($read{$i}) {
895 case '"': $this->parseQuote($read, $i); break;
896 case '{': $this->parseLiteral($read, $i); break;
897 case '(': $this->parseProperties($read, $i); break;
898 default: break;
899 }
900 }
901 return $i;
902 }
903
904 /**
905 * Function to fill the message structure in case the
906 * bodystructure is not available
907 * NOT FINISHED YET
908 * @param string $read
909 * @param string $type0 message part type
910 * @param string $type1 message part subtype
911 * @return string (only when type0 is not message or multipart)
912 */
913 function parseMessage($read, $type0, $type1) {
914 switch ($type0) {
915 case 'message':
916 $rfc822_header = true;
917 $mime_header = false;
918 break;
919 case 'multipart':
920 $rfc822_header = false;
921 $mime_header = true;
922 break;
923 default: return $read;
924 }
925
926 for ($i = 1; $i < $count; ++$i) {
927 $line = trim($body[$i]);
928 if (($mime_header || $rfc822_header) &&
929 (preg_match("/^.*boundary=\"?(.+(?=\")|.+).*/i", $line, $reg))) {
930 $bnd = $reg[1];
931 $bndreg = $bnd;
932 $bndreg = str_replace("\\", "\\\\", $bndreg);
933 $bndreg = str_replace("?", "\\?", $bndreg);
934 $bndreg = str_replace("+", "\\+", $bndreg);
935 $bndreg = str_replace(".", "\\.", $bndreg);
936 $bndreg = str_replace("/", "\\/", $bndreg);
937 $bndreg = str_replace("-", "\\-", $bndreg);
938 $bndreg = str_replace("(", "\\(", $bndreg);
939 $bndreg = str_replace(")", "\\)", $bndreg);
940 } else if ($rfc822_header && $line == '') {
941 $rfc822_header = false;
942 if ($msg->type0 == 'multipart') {
943 $mime_header = true;
944 }
945 }
946
947 if ((($line{0} == '-') || $rfc822_header) && isset($boundaries[0])) {
948 $cnt = count($boundaries)-1;
949 $bnd = $boundaries[$cnt]['bnd'];
950 $bndreg = $boundaries[$cnt]['bndreg'];
951
952 $regstr = '/^--'."($bndreg)".".*".'/';
953 if (preg_match($regstr, $line, $reg)) {
954 $bndlen = strlen($reg[1]);
955 $bndend = false;
956 if (strlen($line) > ($bndlen + 3)) {
957 if (($line{$bndlen+2} == '-') && ($line{$bndlen+3} == '-')) {
958 $bndend = true;
959 }
960 }
961 if ($bndend) {
962 /* calc offset and return $msg */
963 //$entStr = CalcEntity("$entStr", -1);
964 array_pop($boundaries);
965 $mime_header = true;
966 $bnd_end = true;
967 } else {
968 $mime_header = true;
969 $bnd_end = false;
970 //$entStr = CalcEntity("$entStr", 0);
971 ++$content_indx;
972 }
973 } else {
974 if ($header) { }
975 }
976 }
977 }
978 }
979
980 /**
981 * @param array $entity
982 * @param array $alt_order
983 * @param boolean $strict
984 * @return array
985 */
986 function findDisplayEntity($entity = array(), $alt_order = array('text/plain', 'text/html'), $strict=false) {
987 $found = false;
988 if ($this->type0 == 'multipart') {
989 if($this->type1 == 'alternative') {
990 $msg = $this->findAlternativeEntity($alt_order);
991 if ( ! is_null($msg) ) {
992 if (count($msg->entities) == 0) {
993 $entity[] = $msg->entity_id;
994 } else {
995 $entity = $msg->findDisplayEntity($entity, $alt_order, $strict);
996 }
997 $found = true;
998 }
999 } else if ($this->type1 == 'related') { /* RFC 2387 */
1000 $msgs = $this->findRelatedEntity();
1001 foreach ($msgs as $msg) {
1002 if (count($msg->entities) == 0) {
1003 $entity[] = $msg->entity_id;
1004 } else {
1005 $entity = $msg->findDisplayEntity($entity, $alt_order, $strict);
1006 }
1007 }
1008 if (count($msgs) > 0) {
1009 $found = true;
1010 }
1011 } else { /* Treat as multipart/mixed */
1012 foreach ($this->entities as $ent) {
1013 if(!(is_object($ent->header->disposition) && strtolower($ent->header->disposition->name) == 'attachment') &&
1014 (!isset($ent->header->parameters['filename'])) &&
1015 (!isset($ent->header->parameters['name'])) &&
1016 (($ent->type0 != 'message') && ($ent->type1 != 'rfc822'))) {
1017 $entity = $ent->findDisplayEntity($entity, $alt_order, $strict);
1018 $found = true;
1019 }
1020 }
1021 }
1022 } else { /* If not multipart, then just compare with each entry from $alt_order */
1023 $type = $this->type0.'/'.$this->type1;
1024 // $alt_order[] = "message/rfc822";
1025 foreach ($alt_order as $alt) {
1026 if( ($alt == $type) && isset($this->entity_id) ) {
1027 if ((count($this->entities) == 0) &&
1028 (!isset($this->header->parameters['filename'])) &&
1029 (!isset($this->header->parameters['name'])) &&
1030 isset($this->header->disposition) && is_object($this->header->disposition) &&
1031 !(is_object($this->header->disposition) && strtolower($this->header->disposition->name) == 'attachment')) {
1032 $entity[] = $this->entity_id;
1033 $found = true;
1034 }
1035 }
1036 }
1037 }
1038 if(!$found) {
1039 foreach ($this->entities as $ent) {
1040 if(!(is_object($ent->header->disposition) && strtolower($ent->header->disposition->name) == 'attachment') &&
1041 (($ent->type0 != 'message') && ($ent->type1 != 'rfc822'))) {
1042 $entity = $ent->findDisplayEntity($entity, $alt_order, $strict);
1043 $found = true;
1044 }
1045 }
1046 }
1047 if(!$strict && !$found) {
1048 if (($this->type0 == 'text') &&
1049 in_array($this->type1, array('plain', 'html', 'message')) &&
1050 isset($this->entity_id)) {
1051 if (count($this->entities) == 0) {
1052 if (!is_object($this->header->disposition) || strtolower($this->header->disposition->name) != 'attachment') {
1053 $entity[] = $this->entity_id;
1054 }
1055 }
1056 }
1057 }
1058 return $entity;
1059 }
1060
1061 /**
1062 * @param array $alt_order
1063 * @return entity
1064 */
1065 function findAlternativeEntity($alt_order) {
1066 /* If we are dealing with alternative parts then we */
1067 /* choose the best viewable message supported by SM. */
1068 $best_view = 0;
1069 $entity = null;
1070 foreach($this->entities as $ent) {
1071 $type = $ent->header->type0 . '/' . $ent->header->type1;
1072 if ($type == 'multipart/related') {
1073 $type = $ent->header->getParameter('type');
1074 // Mozilla bug. Mozilla does not provide the parameter type.
1075 if (!$type) $type = 'text/html';
1076 }
1077 $altCount = count($alt_order);
1078 for ($j = $best_view; $j < $altCount; ++$j) {
1079 if (($alt_order[$j] == $type) && ($j >= $best_view)) {
1080 $best_view = $j;
1081 $entity = $ent;
1082 }
1083 }
1084 }
1085 return $entity;
1086 }
1087
1088 /**
1089 * @return array
1090 */
1091 function findRelatedEntity() {
1092 $msgs = array();
1093 $related_type = $this->header->getParameter('type');
1094 // Mozilla bug. Mozilla does not provide the parameter type.
1095 if (!$related_type) $related_type = 'text/html';
1096 $entCount = count($this->entities);
1097 for ($i = 0; $i < $entCount; ++$i) {
1098 $type = $this->entities[$i]->header->type0.'/'.$this->entities[$i]->header->type1;
1099 if ($related_type == $type) {
1100 $msgs[] = $this->entities[$i];
1101 }
1102 }
1103 return $msgs;
1104 }
1105
1106 /**
1107 * @param array $exclude_id
1108 * @param array $result
1109 * @return array
1110 */
1111 function getAttachments($exclude_id=array(), $result = array()) {
1112 /*
1113 if (($this->type0 == 'message') &&
1114 ($this->type1 == 'rfc822') &&
1115 ($this->entity_id) ) {
1116 $this = $this->entities[0];
1117 }
1118 */
1119 if (count($this->entities)) {
1120 foreach ($this->entities as $entity) {
1121 $exclude = false;
1122 foreach ($exclude_id as $excl) {
1123 if ($entity->entity_id === $excl) {
1124 $exclude = true;
1125 }
1126 }
1127
1128 if (!$exclude) {
1129 if ($entity->type0 == 'multipart') {
1130 $result = $entity->getAttachments($exclude_id, $result);
1131 } else if ($entity->type0 != 'multipart') {
1132 $result[] = $entity;
1133 }
1134 }
1135 }
1136 } else {
1137 $exclude = false;
1138 foreach ($exclude_id as $excl) {
1139 $exclude = $exclude || ($this->entity_id == $excl);
1140 }
1141
1142 if (!$exclude) {
1143 $result[] = $this;
1144 }
1145 }
1146 return $result;
1147 }
1148
1149 /**
1150 * Add attachment to message object
1151 * @param string $type attachment type
1152 * @param string $name attachment name
1153 * @param string $location path to attachment
1154 */
1155 function initAttachment($type, $name, $location) {
1156 $attachment = new Message();
1157 $mime_header = new MessageHeader();
1158 $mime_header->setParameter('name', $name);
1159 // FIXME: duplicate code. see ContentType class
1160 $pos = strpos($type, '/');
1161 if ($pos > 0) {
1162 $mime_header->type0 = substr($type, 0, $pos);
1163 $mime_header->type1 = substr($type, $pos+1);
1164 } else {
1165 $mime_header->type0 = $type;
1166 }
1167 $attachment->att_local_name = $location;
1168 $disposition = new Disposition('attachment');
1169 $disposition->properties['filename'] = $name;
1170 $mime_header->disposition = $disposition;
1171 $attachment->mime_header = $mime_header;
1172 $this->entities[]=$attachment;
1173 }
1174
1175 /**
1176 * Delete all attachments from this object from disk.
1177 * @since 1.5.1
1178 */
1179 function purgeAttachments() {
1180 if ($this->att_local_name) {
1181 global $username, $attachment_dir;
1182 $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
1183 if ( file_exists($hashed_attachment_dir . '/' . $this->att_local_name) ) {
1184 unlink($hashed_attachment_dir . '/' . $this->att_local_name);
1185 }
1186 }
1187 // recursively delete attachments from entities contained in this object
1188 for ($i=0, $entCount=count($this->entities);$i< $entCount; ++$i) {
1189 $this->entities[$i]->purgeAttachments();
1190 }
1191 }
1192 }