59177427 |
1 | <?php |
2ba13803 |
2 | |
35586184 |
3 | /** |
4 | * mime.php |
5 | * |
15e6162e |
6 | * Copyright (c) 1999-2002 The SquirrelMail Project Team |
35586184 |
7 | * Licensed under the GNU GPL. For full terms see the file COPYING. |
8 | * |
9 | * This contains the functions necessary to detect and decode MIME |
10 | * messages. |
11 | * |
12 | * $Id$ |
13 | */ |
b74ba498 |
14 | |
35586184 |
15 | /*****************************************************************/ |
16 | /*** THIS FILE NEEDS TO HAVE ITS FORMATTING FIXED!!! ***/ |
17 | /*** PLEASE DO SO AND REMOVE THIS COMMENT SECTION. ***/ |
18 | /*** + Base level indent should begin at left margin, as ***/ |
19 | /*** the require_once below. ***/ |
20 | /*** + All identation should consist of four space blocks ***/ |
21 | /*** + Tab characters are evil. ***/ |
22 | /*** + all comments should use "slash-star ... star-slash" ***/ |
23 | /*** style -- no pound characters, no slash-slash style ***/ |
24 | /*** + FLOW CONTROL STATEMENTS (if, while, etc) SHOULD ***/ |
25 | /*** ALWAYS USE { AND } CHARACTERS!!! ***/ |
26 | /*** + Please use ' instead of ", when possible. Note " ***/ |
27 | /*** should always be used in _( ) function calls. ***/ |
28 | /*** Thank you for your help making the SM code more readable. ***/ |
29 | /*****************************************************************/ |
8beafbbc |
30 | |
35586184 |
31 | require_once('../functions/imap.php'); |
32 | require_once('../functions/attachment_common.php'); |
8beafbbc |
33 | |
35586184 |
34 | /** Setting up the objects that have the structure for the message **/ |
35 | class msg_header { |
36 | /** msg_header contains generic variables for values that **/ |
37 | /** could be in a header. **/ |
b74ba498 |
38 | |
35586184 |
39 | var $type0 = '', $type1 = '', $boundary = '', $charset = ''; |
40 | var $encoding = '', $size = 0, $to = array(), $from = '', $date = ''; |
41 | var $cc = array(), $bcc = array(), $reply_to = '', $subject = ''; |
42 | var $id = 0, $mailbox = '', $description = '', $filename = ''; |
43 | var $entity_id = 0, $message_id = 0, $name = ''; |
44 | // var $priority = ""; |
45 | } |
b74ba498 |
46 | |
8beafbbc |
47 | class message { |
48 | /** message is the object that contains messages. It is a recursive |
b74ba498 |
49 | object in that through the $entities variable, it can contain |
8beafbbc |
50 | more objects of type message. See documentation in mime.txt for |
51 | a better description of how this works. |
b74ba498 |
52 | **/ |
61423189 |
53 | var $header = ''; |
2df6ca53 |
54 | var $entities = array(); |
b74ba498 |
55 | |
8beafbbc |
56 | function addEntity ($msg) { |
61423189 |
57 | $this->entities[] = $msg; |
8beafbbc |
58 | } |
59 | } |
1fd97780 |
60 | |
8beafbbc |
61 | /* --------------------------------------------------------------------------------- */ |
62 | /* MIME DECODING */ |
63 | /* --------------------------------------------------------------------------------- */ |
b74ba498 |
64 | |
cbcf32f6 |
65 | // This function gets the structure of a message and stores it in the "message" class. |
66 | // It will return this object for use with all relevant header information and |
67 | // fully parsed into the standard "message" object format. |
8beafbbc |
68 | function mime_structure ($imap_stream, $header) { |
b74ba498 |
69 | |
70 | sqimap_messages_flag ($imap_stream, $header->id, $header->id, 'Seen'); |
71 | $ssid = sqimap_session_id(); |
72 | $lsid = strlen( $ssid ); |
8beafbbc |
73 | $id = $header->id; |
b74ba498 |
74 | fputs ($imap_stream, "$ssid FETCH $id BODYSTRUCTURE\r\n"); |
245a6892 |
75 | // |
76 | // This should use sqimap_read_data instead of reading it itself |
77 | // |
e79bed1b |
78 | $read = fgets ($imap_stream, 10000); |
b74ba498 |
79 | $bodystructure = ''; |
80 | while( substr($read, 0, $lsid) <> $ssid && |
81 | !feof( $imap_stream ) ) { |
3e1266ef |
82 | $bodystructure .= $read; |
254925d1 |
83 | $read = fgets ($imap_stream, 10000); |
254925d1 |
84 | } |
22ef7536 |
85 | $read = $bodystructure; |
8beafbbc |
86 | |
8beafbbc |
87 | // isolate the body structure and remove beginning and end parenthesis |
b74ba498 |
88 | $read = trim(substr ($read, strpos(strtolower($read), 'bodystructure') + 13)); |
ea48eb25 |
89 | $read = trim(substr ($read, 0, -1)); |
90 | $end = mime_match_parenthesis(0, $read); |
91 | while ($end == strlen($read)-1) { |
92 | $read = trim(substr ($read, 0, -1)); |
93 | $read = trim(substr ($read, 1)); |
94 | $end = mime_match_parenthesis(0, $read); |
95 | } |
8beafbbc |
96 | |
85daa3ad |
97 | $msg = mime_parse_structure ($read, 0); |
8beafbbc |
98 | $msg->header = $header; |
99 | return $msg; |
100 | } |
101 | |
cbcf32f6 |
102 | // this starts the parsing of a particular structure. It is called recursively, |
103 | // so it can be passed different structures. It returns an object of type |
104 | // $message. |
105 | // First, it checks to see if it is a multipart message. If it is, then it |
106 | // handles that as it sees is necessary. If it is just a regular entity, |
107 | // then it parses it and adds the necessary header information (by calling out |
108 | // to mime_get_elements() |
8beafbbc |
109 | function mime_parse_structure ($structure, $ent_id) { |
b74ba498 |
110 | |
8beafbbc |
111 | $msg = new message(); |
b74ba498 |
112 | if ($structure{0} == '(') { |
8beafbbc |
113 | $ent_id = mime_new_element_level($ent_id); |
114 | $start = $end = -1; |
115 | do { |
8beafbbc |
116 | $start = $end+1; |
117 | $end = mime_match_parenthesis ($start, $structure); |
b74ba498 |
118 | |
8beafbbc |
119 | $element = substr($structure, $start+1, ($end - $start)-1); |
ea48eb25 |
120 | $ent_id = mime_increment_id ($ent_id); |
8beafbbc |
121 | $newmsg = mime_parse_structure ($element, $ent_id); |
122 | $msg->addEntity ($newmsg); |
b74ba498 |
123 | } while ($structure{$end+1} == '('); |
8beafbbc |
124 | } else { |
125 | // parse the elements |
090595e1 |
126 | $msg = mime_get_element ($structure, $msg, $ent_id); |
8beafbbc |
127 | } |
bc64f471 |
128 | return $msg; |
8beafbbc |
129 | } |
130 | |
131 | // Increments the element ID. An element id can look like any of |
132 | // the following: 1, 1.2, 4.3.2.4.1, etc. This function increments |
133 | // the last number of the element id, changing 1.2 to 1.3. |
134 | function mime_increment_id ($id) { |
b74ba498 |
135 | |
8beafbbc |
136 | if (strpos($id, ".")) { |
137 | $first = substr($id, 0, strrpos($id, ".")); |
ea48eb25 |
138 | $last = substr($id, strrpos($id, ".")+1); |
8beafbbc |
139 | $last++; |
ea48eb25 |
140 | $new = $first . "." .$last; |
8beafbbc |
141 | } else { |
142 | $new = $id + 1; |
143 | } |
b74ba498 |
144 | |
8beafbbc |
145 | return $new; |
146 | } |
147 | |
148 | // See comment for mime_increment_id(). |
149 | // This adds another level on to the entity_id changing 1.3 to 1.3.0 |
b74ba498 |
150 | // NOTE: 1.3.0 is not a valid element ID. It MUST be incremented |
8beafbbc |
151 | // before it can be used. I left it this way so as not to have |
152 | // to make a special case if it is the first entity_id. It |
153 | // always increments it, and that works fine. |
154 | function mime_new_element_level ($id) { |
ea48eb25 |
155 | |
b74ba498 |
156 | if (!$id) { |
157 | $id = 0; |
158 | } else { |
159 | $id = $id . '.0'; |
160 | } |
161 | |
162 | return( $id ); |
8beafbbc |
163 | } |
164 | |
ea48eb25 |
165 | function mime_get_element (&$structure, $msg, $ent_id) { |
b74ba498 |
166 | |
8beafbbc |
167 | $elem_num = 1; |
ea48eb25 |
168 | $msg->header = new msg_header(); |
169 | $msg->header->entity_id = $ent_id; |
4bbe6ccc |
170 | $properties = array(); |
b74ba498 |
171 | |
8beafbbc |
172 | while (strlen($structure) > 0) { |
173 | $structure = trim($structure); |
b74ba498 |
174 | $char = $structure{0}; |
8beafbbc |
175 | |
b74ba498 |
176 | if (strtolower(substr($structure, 0, 3)) == 'nil') { |
177 | $text = ''; |
8beafbbc |
178 | $structure = substr($structure, 3); |
b74ba498 |
179 | } else if ($char == '"') { |
8beafbbc |
180 | // loop through until we find the matching quote, and return that as a string |
181 | $pos = 1; |
b74ba498 |
182 | $text = ''; |
183 | while ( ($char = $structure{$pos} ) <> '"' && $pos < strlen($structure)) { |
8beafbbc |
184 | $text .= $char; |
185 | $pos++; |
b74ba498 |
186 | } |
8beafbbc |
187 | $structure = substr($structure, strlen($text) + 2); |
b74ba498 |
188 | } else if ($char == '(') { |
8beafbbc |
189 | // comment me |
190 | $end = mime_match_parenthesis (0, $structure); |
191 | $sub = substr($structure, 1, $end-1); |
192 | $properties = mime_get_props($properties, $sub); |
193 | $structure = substr($structure, strlen($sub) + 2); |
194 | } else { |
195 | // loop through until we find a space or an end parenthesis |
196 | $pos = 0; |
b74ba498 |
197 | $char = $structure{$pos}; |
198 | $text = ''; |
199 | while ($char != ' ' && $char != ')' && $pos < strlen($structure)) { |
8beafbbc |
200 | $text .= $char; |
201 | $pos++; |
b74ba498 |
202 | $char = $structure{$pos}; |
aceb0d5c |
203 | } |
8beafbbc |
204 | $structure = substr($structure, strlen($text)); |
aceb0d5c |
205 | } |
8beafbbc |
206 | |
207 | // This is where all the text parts get put into the header |
208 | switch ($elem_num) { |
b74ba498 |
209 | case 1: |
22ef7536 |
210 | $msg->header->type0 = strtolower($text); |
8beafbbc |
211 | break; |
b74ba498 |
212 | case 2: |
22ef7536 |
213 | $msg->header->type1 = strtolower($text); |
8beafbbc |
214 | break; |
b74ba498 |
215 | case 4: // Id |
216 | // Invisimail enclose images with <> |
217 | $msg->header->id = str_replace( '<', '', str_replace( '>', '', $text ) ); |
218 | break; |
ea48eb25 |
219 | case 5: |
220 | $msg->header->description = $text; |
ea48eb25 |
221 | break; |
8beafbbc |
222 | case 6: |
22ef7536 |
223 | $msg->header->encoding = strtolower($text); |
8beafbbc |
224 | break; |
225 | case 7: |
ea48eb25 |
226 | $msg->header->size = $text; |
8beafbbc |
227 | break; |
228 | default: |
b74ba498 |
229 | if ($msg->header->type0 == 'text' && $elem_num == 8) { |
cbcf32f6 |
230 | // This is a plain text message, so lets get the number of lines |
231 | // that it contains. |
ea48eb25 |
232 | $msg->header->num_lines = $text; |
cbcf32f6 |
233 | |
b74ba498 |
234 | } else if ($msg->header->type0 == 'message' && $msg->header->type1 == 'rfc822' && $elem_num == 8) { |
235 | // This is an encapsulated message, so lets start all over again and |
ea48eb25 |
236 | // parse this message adding it on to the existing one. |
237 | $structure = trim($structure); |
b74ba498 |
238 | if ( $structure{0} == '(' ) { |
ea48eb25 |
239 | $e = mime_match_parenthesis (0, $structure); |
240 | $structure = substr($structure, 0, $e); |
241 | $structure = substr($structure, 1); |
242 | $m = mime_parse_structure($structure, $msg->header->entity_id); |
b74ba498 |
243 | |
cbcf32f6 |
244 | // the following conditional is there to correct a bug that wasn't |
245 | // incrementing the entity IDs correctly because of the special case |
246 | // that message/rfc822 is. This fixes it fine. |
b74ba498 |
247 | if (substr($structure, 1, 1) != '(') |
ea48eb25 |
248 | $m->header->entity_id = mime_increment_id(mime_new_element_level($ent_id)); |
b74ba498 |
249 | |
cbcf32f6 |
250 | // Now we'll go through and reformat the results. |
ea48eb25 |
251 | if ($m->entities) { |
252 | for ($i=0; $i < count($m->entities); $i++) { |
ea48eb25 |
253 | $msg->addEntity($m->entities[$i]); |
254 | } |
255 | } else { |
ea48eb25 |
256 | $msg->addEntity($m); |
257 | } |
b74ba498 |
258 | $structure = ""; |
ea48eb25 |
259 | } |
8beafbbc |
260 | } |
261 | break; |
262 | } |
263 | $elem_num++; |
264 | $text = ""; |
265 | } |
266 | // loop through the additional properties and put those in the various headers |
b74ba498 |
267 | if ($msg->header->type0 != 'message') { |
cbcf32f6 |
268 | for ($i=0; $i < count($properties); $i++) { |
b74ba498 |
269 | $msg->header->{$properties[$i]['name']} = $properties[$i]['value']; |
cbcf32f6 |
270 | } |
ea48eb25 |
271 | } |
e4a256af |
272 | |
ea48eb25 |
273 | return $msg; |
8beafbbc |
274 | } |
275 | |
276 | // I did most of the MIME stuff yesterday (June 20, 2000), but I couldn't |
277 | // figure out how to do this part, so I decided to go to bed. I woke up |
278 | // in the morning and had a flash of insight. I went to the white-board |
279 | // and scribbled it out, then spent a bit programming it, and this is the |
280 | // result. Nothing complicated, but I think my brain was fried yesterday. |
cbcf32f6 |
281 | // Funny how that happens some times. |
8beafbbc |
282 | // |
283 | // This gets properties in a nested parenthesisized list. For example, |
284 | // this would get passed something like: ("attachment" ("filename" "luke.tar.gz")) |
285 | // This returns an array called $props with all paired up properties. |
b74ba498 |
286 | // It ignores the "attachment" for now, maybe that should change later |
8beafbbc |
287 | // down the road. In this case, what is returned is: |
288 | // $props[0]["name"] = "filename"; |
289 | // $props[0]["value"] = "luke.tar.gz"; |
290 | function mime_get_props ($props, $structure) { |
b74ba498 |
291 | |
8beafbbc |
292 | while (strlen($structure) > 0) { |
293 | $structure = trim($structure); |
b74ba498 |
294 | $char = $structure{0}; |
8beafbbc |
295 | |
b74ba498 |
296 | if ($char == '"') { |
8beafbbc |
297 | $pos = 1; |
b74ba498 |
298 | $tmp = ''; |
299 | while ( ( $char = $structure{$pos} ) != '"' && |
300 | $pos < strlen($structure)) { |
8beafbbc |
301 | $tmp .= $char; |
302 | $pos++; |
b74ba498 |
303 | } |
8beafbbc |
304 | $structure = trim(substr($structure, strlen($tmp) + 2)); |
b74ba498 |
305 | $char = $structure{0}; |
8beafbbc |
306 | |
b74ba498 |
307 | if ($char == '"') { |
8beafbbc |
308 | $pos = 1; |
b74ba498 |
309 | $value = ''; |
310 | while ( ( $char = $structure{$pos} ) != '"' && |
311 | $pos < strlen($structure) ) { |
8beafbbc |
312 | $value .= $char; |
313 | $pos++; |
b74ba498 |
314 | } |
8beafbbc |
315 | $structure = trim(substr($structure, strlen($tmp) + 2)); |
b74ba498 |
316 | |
8beafbbc |
317 | $k = count($props); |
b74ba498 |
318 | $props[$k]['name'] = strtolower($tmp); |
319 | $props[$k]['value'] = $value; |
320 | } else if ($char == '(') { |
8beafbbc |
321 | $end = mime_match_parenthesis (0, $structure); |
322 | $sub = substr($structure, 1, $end-1); |
b74ba498 |
323 | if (! isset($props)) |
324 | $props = array(); |
8beafbbc |
325 | $props = mime_get_props($props, $sub); |
326 | $structure = substr($structure, strlen($sub) + 2); |
327 | } |
328 | return $props; |
b74ba498 |
329 | } else if ($char == '(') { |
8beafbbc |
330 | $end = mime_match_parenthesis (0, $structure); |
331 | $sub = substr($structure, 1, $end-1); |
332 | $props = mime_get_props($props, $sub); |
333 | $structure = substr($structure, strlen($sub) + 2); |
ea48eb25 |
334 | return $props; |
8beafbbc |
335 | } else { |
336 | return $props; |
7831268e |
337 | } |
8beafbbc |
338 | } |
339 | } |
7831268e |
340 | |
8beafbbc |
341 | // Matches parenthesis. It will return the position of the matching |
342 | // parenthesis in $structure. For instance, if $structure was: |
343 | // ("text" "plain" ("val1name", "1") nil ... ) |
344 | // x x |
345 | // then this would return 42 to match up those two. |
346 | function mime_match_parenthesis ($pos, $structure) { |
b74ba498 |
347 | |
348 | $j = strlen( $structure ); |
8beafbbc |
349 | |
350 | // ignore all extra characters |
5ffe5a7e |
351 | // If inside of a string, skip string -- Boundary IDs and other |
352 | // things can have ) in them. |
b74ba498 |
353 | if( $structure{$pos} != '(' ) |
354 | return( $j ); |
355 | |
356 | while( $pos < $j ) { |
8beafbbc |
357 | $pos++; |
b74ba498 |
358 | if ($structure{$pos} == ')') { |
8beafbbc |
359 | return $pos; |
b74ba498 |
360 | } elseif ($structure{$pos} == '"') { |
361 | $pos++; |
362 | while( $structure{$pos} != '"' && |
363 | $pos < $j ) { |
364 | if (substr($structure, $pos, 2) == '\\"') |
365 | $pos++; |
366 | elseif (substr($structure, $pos, 2) == '\\\\') |
367 | $pos++; |
368 | $pos++; |
5ffe5a7e |
369 | } |
b74ba498 |
370 | } elseif ( $structure{$pos} == '(' ) { |
8beafbbc |
371 | $pos = mime_match_parenthesis ($pos, $structure); |
372 | } |
d4467150 |
373 | } |
377a40b2 |
374 | echo "Error decoding mime structure. Report this as a bug!<br>\n"; |
b74ba498 |
375 | return( $pos ); |
8beafbbc |
376 | } |
d4467150 |
377 | |
a3daaaf3 |
378 | function mime_fetch_body ($imap_stream, $id, $ent_id ) { |
379 | // do a bit of error correction. If we couldn't find the entity id, just guess |
380 | // that it is the first one. That is usually the case anyway. |
381 | if (!$ent_id) |
382 | $ent_id = 1; |
383 | $sid = sqimap_session_id(); |
384 | fputs ($imap_stream, "$sid FETCH $id BODY[$ent_id]\r\n"); |
385 | $data = sqimap_read_data ($imap_stream, $sid, true, $response, $message); |
386 | $topline = array_shift($data); |
387 | while (! ereg('\\* [0-9]+ FETCH ', $topline) && $data) |
388 | $topline = array_shift($data); |
389 | $wholemessage = implode('', $data); |
390 | if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) { |
391 | $ret = substr( $wholemessage, 0, $regs[1] ); |
392 | /* |
393 | There is some information in the content info header that could be important |
394 | in order to parse html messages. Let's get them here. |
395 | */ |
396 | if( $ret{0} == '<' ) { |
397 | fputs ($imap_stream, "$sid FETCH $id BODY[$ent_id.MIME]\r\n"); |
398 | $data = sqimap_read_data ($imap_stream, $sid, true, $response, $message); |
399 | $base = ''; |
400 | $k = 10; |
401 | foreach( $data as $d ) { |
402 | if( substr( $d, 0, 13 ) == 'Content-Base:' ) { |
403 | $j = strlen( $d ); |
404 | $i = 13; |
405 | $base = ''; |
406 | while( $i < $j && |
407 | ( !isNoSep( $d{$i} ) || $d{$i} == '"' ) ) |
408 | $i++; |
409 | while( $i < $j ) { |
410 | if( isNoSep( $d{$i} ) ) |
411 | $base .= $d{$i}; |
412 | $i++; |
413 | } |
414 | $k = 0; |
415 | } elseif( $k == 1 && !isnosep( $d{0} ) ) { |
416 | $base .= substr( $d, 1 ); |
417 | } |
418 | $k++; |
419 | } |
420 | if( $base <> '' ) |
421 | $ret = "<base href=\"$base\">" . $ret; |
422 | } |
423 | } else if (ereg('"([^"]*)"', $topline, $regs)) { |
424 | $ret = $regs[1]; |
425 | } else { |
a019eeb8 |
426 | global $where, $what, $mailbox, $passed_id, $startMessage; |
427 | $par = "mailbox=".urlencode($mailbox)."&passed_id=$passed_id"; |
428 | if (isset($where) && isset($what)) { |
429 | $par .= "&where=".urlencode($where)."&what=".urlencode($what); |
430 | } else { |
431 | $par .= "&startMessage=$startMessage&show_more=0"; |
a3daaaf3 |
432 | } |
a019eeb8 |
433 | $par .= '&response='.urlencode($response).'&message='.urlencode($message). |
434 | '&topline='.urlencode($topline); |
435 | |
436 | echo '<b><font color=$color[2]>Body retrieval error. The reason for this is most probably that<BR> ' . |
437 | 'the message is malformed. Please help us making future versions<BR> ' . |
438 | "better by submitting this message to the developers knowledgebase!<BR>\n" . |
439 | "<A HREF=\"../src/retrievalerror.php?$par\">Submit message</A><BR>" . |
440 | |
441 | "<tt>Response: $response<BR>" . |
442 | "Message: $message<BR>" . |
443 | "FETCH line: $topline<BR></tt></font></b>"; |
444 | |
445 | fputs ($imap_stream, "$sid FETCH $passed_id BODY[]\r\n"); |
446 | $data = sqimap_read_data ($imap_stream, $sid, true, $response, $message); |
447 | array_shift($data); |
448 | $wholemessage = implode('', $data); |
449 | |
450 | $ret = "---------------\n$wholemessage"; |
451 | |
a3daaaf3 |
452 | } |
453 | return( $ret ); |
454 | } |
d4467150 |
455 | |
beb9e459 |
456 | function mime_print_body_lines ($imap_stream, $id, $ent_id, $encoding) { |
457 | // do a bit of error correction. If we couldn't find the entity id, just guess |
458 | // that it is the first one. That is usually the case anyway. |
459 | if (!$ent_id) $ent_id = 1; |
b74ba498 |
460 | $sid = sqimap_session_id(); |
1d1e02f4 |
461 | // Don't kill the connection if the browser is over a dialup |
462 | // and it would take over 30 seconds to download it. |
463 | set_time_limit(0); |
464 | |
b74ba498 |
465 | fputs ($imap_stream, "$sid FETCH $id BODY[$ent_id]\r\n"); |
466 | $cnt = 0; |
467 | $continue = true; |
468 | $read = fgets ($imap_stream,4096); |
469 | // This could be bad -- if the section has sqimap_session_id() . ' OK' |
470 | // or similar, it will kill the download. |
471 | while (!ereg("^".$sid." (OK|BAD|NO)(.*)$", $read, $regs)) { |
472 | if (trim($read) == ')==') { |
473 | $read1 = $read; |
474 | $read = fgets ($imap_stream,4096); |
475 | if (ereg("^".$sid." (OK|BAD|NO)(.*)$", $read, $regs)) { |
476 | return; |
477 | } else { |
478 | echo decodeBody($read1, $encoding) . |
479 | decodeBody($read, $encoding); |
480 | } |
481 | } else if ($cnt) { |
482 | echo decodeBody($read, $encoding); |
483 | } |
484 | $read = fgets ($imap_stream,4096); |
485 | $cnt++; |
486 | } |
beb9e459 |
487 | } |
488 | |
8beafbbc |
489 | /* -[ END MIME DECODING ]----------------------------------------------------------- */ |
d4467150 |
490 | |
aceb0d5c |
491 | |
d4467150 |
492 | |
8beafbbc |
493 | /** This is the first function called. It decides if this is a multipart |
494 | message or if it should be handled as a single entity |
4809f489 |
495 | **/ |
090595e1 |
496 | function decodeMime ($imap_stream, &$header) { |
8beafbbc |
497 | global $username, $key, $imapServerAddress, $imapPort; |
8d8ab69a |
498 | return mime_structure ($imap_stream, $header); |
8beafbbc |
499 | } |
b1dadc61 |
500 | |
cbcf32f6 |
501 | // This is here for debugging purposese. It will print out a list |
502 | // of all the entity IDs that are in the $message object. |
b74ba498 |
503 | /* |
ea48eb25 |
504 | function listEntities ($message) { |
505 | if ($message) { |
cbcf32f6 |
506 | if ($message->header->entity_id) |
b74ba498 |
507 | echo "<tt>" . $message->header->entity_id . ' : ' . $message->header->type0 . '/' . $message->header->type1 . '<br>'; |
cbcf32f6 |
508 | for ($i = 0; $message->entities[$i]; $i++) { |
509 | $msg = listEntities($message->entities[$i], $ent_id); |
510 | if ($msg) |
511 | return $msg; |
512 | } |
ea48eb25 |
513 | } |
514 | } |
b74ba498 |
515 | */ |
ea48eb25 |
516 | |
cbcf32f6 |
517 | // returns a $message object for a particular entity id |
8beafbbc |
518 | function getEntity ($message, $ent_id) { |
519 | if ($message) { |
ea48eb25 |
520 | if ($message->header->entity_id == $ent_id && strlen($ent_id) == strlen($message->header->entity_id)) { |
8beafbbc |
521 | return $message; |
b1dadc61 |
522 | } else { |
cd928157 |
523 | for ($i = 0; isset($message->entities[$i]); $i++) { |
8beafbbc |
524 | $msg = getEntity ($message->entities[$i], $ent_id); |
525 | if ($msg) |
526 | return $msg; |
b1dadc61 |
527 | } |
b74ba498 |
528 | } |
8beafbbc |
529 | } |
530 | } |
531 | |
a3daaaf3 |
532 | // figures out what entity to display and returns the $message object |
533 | // for that entity. |
534 | function findDisplayEntity ($message, $textOnly = 1) { |
535 | global $show_html_default; |
536 | |
537 | $entity = 0; |
538 | |
539 | if ($message) { |
540 | if ( $message->header->type0 == 'multipart' && |
541 | ( $message->header->type1 == 'alternative' || |
542 | $message->header->type1 == 'related' ) && |
543 | $show_html_default && ! $textOnly ) { |
544 | $entity = findDisplayEntityHTML($message); |
545 | } |
546 | |
547 | // Show text/plain or text/html -- the first one we find. |
548 | if ( $entity == 0 && |
549 | $message->header->type0 == 'text' && |
550 | ( $message->header->type1 == 'plain' || |
551 | $message->header->type1 == 'html' ) && |
552 | isset($message->header->entity_id) ) { |
553 | $entity = $message->header->entity_id; |
554 | } |
555 | |
556 | $i = 0; |
557 | while ($entity == 0 && isset($message->entities[$i]) ) { |
558 | $entity = findDisplayEntity($message->entities[$i], $textOnly); |
559 | $i++; |
560 | } |
561 | } |
562 | |
563 | return( $entity ); |
564 | } |
b74ba498 |
565 | |
c3a80dac |
566 | // Shows the HTML version |
567 | function findDisplayEntityHTML ($message) { |
b74ba498 |
568 | if ($message->header->type0 == 'text' && |
c3a80dac |
569 | $message->header->type1 == 'html' && |
b74ba498 |
570 | isset($message->header->entity_id)) |
571 | return $message->header->entity_id; |
c3a80dac |
572 | for ($i = 0; isset($message->entities[$i]); $i ++) { |
573 | $entity = findDisplayEntityHTML($message->entities[$i]); |
b74ba498 |
574 | if ($entity != 0) |
575 | return $entity; |
c3a80dac |
576 | } |
e2ab93e5 |
577 | return 0; |
b1dadc61 |
578 | } |
8405ee35 |
579 | |
d068c0ec |
580 | /** This returns a parsed string called $body. That string can then |
581 | be displayed as the actual message in the HTML. It contains |
582 | everything needed, including HTML Tags, Attachments at the |
583 | bottom, etc. |
4809f489 |
584 | **/ |
8d8ab69a |
585 | function formatBody($imap_stream, $message, $color, $wrap_at) { |
cbcf32f6 |
586 | // this if statement checks for the entity to show as the |
587 | // primary message. To add more of them, just put them in the |
588 | // order that is their priority. |
5f1c529a |
589 | global $startMessage, $username, $key, $imapServerAddress, $imapPort, |
590 | $show_html_default; |
8beafbbc |
591 | |
8beafbbc |
592 | $id = $message->header->id; |
593 | $urlmailbox = urlencode($message->header->mailbox); |
594 | |
e4a256af |
595 | // Get the right entity and redefine message to be this entity |
3ae6e629 |
596 | // Pass the 0 to mean that we want the 'best' viewable one |
597 | $ent_num = findDisplayEntity ($message, 0); |
2c252f5a |
598 | $body_message = getEntity($message, $ent_num); |
b74ba498 |
599 | if (($body_message->header->type0 == 'text') || |
600 | ($body_message->header->type0 == 'rfc822')) { |
601 | |
d51894be |
602 | $body = mime_fetch_body ($imap_stream, $id, $ent_num); |
d4ff4d67 |
603 | $body = decodeBody($body, $body_message->header->encoding); |
b74ba498 |
604 | $hookResults = do_hook("message_body", $body); |
605 | $body = $hookResults[1]; |
b36d403c |
606 | |
d4ff4d67 |
607 | // If there are other types that shouldn't be formatted, add |
b74ba498 |
608 | // them here |
a3daaaf3 |
609 | if ($body_message->header->type1 == 'html') { |
610 | if( $show_html_default <> 1 ) { |
611 | $body = strip_tags( $body ); |
612 | translateText($body, $wrap_at, $body_message->header->charset); |
613 | } else { |
614 | $body = MagicHTML( $body, $id ); |
615 | } |
616 | } else { |
9eea179c |
617 | translateText($body, $wrap_at, $body_message->header->charset); |
b74ba498 |
618 | } |
619 | |
7b9592dc |
620 | $body .= "<SMALL><CENTER><A HREF=\"../src/download.php?absolute_dl=true&passed_id=$id&passed_ent_id=$ent_num&mailbox=$urlmailbox&showHeaders=1\">". _("Download this as a file") ."</A></CENTER><BR></SMALL>"; |
b74ba498 |
621 | |
d4ff4d67 |
622 | /** Display the ATTACHMENTS: message if there's more than one part **/ |
dd389be5 |
623 | $body .= "</TD></TR></TABLE>"; |
719534f2 |
624 | if (isset($message->entities[0])) { |
d4ff4d67 |
625 | $body .= formatAttachments ($message, $ent_num, $message->header->mailbox, $id); |
d4ff4d67 |
626 | } |
b74ba498 |
627 | $body .= "</TD></TR></TABLE>"; |
d4ff4d67 |
628 | } else { |
cba164a0 |
629 | $body = formatAttachments ($message, -1, $message->header->mailbox, $id); |
8405ee35 |
630 | } |
0606ca1f |
631 | return ($body); |
d4467150 |
632 | } |
633 | |
8beafbbc |
634 | // A recursive function that returns a list of attachments with links |
635 | // to where to download these attachments |
636 | function formatAttachments ($message, $ent_id, $mailbox, $id) { |
f4991a86 |
637 | global $where, $what; |
dd389be5 |
638 | global $startMessage, $color; |
719534f2 |
639 | static $ShownHTML = 0; |
b74ba498 |
640 | |
641 | $body = ""; |
642 | if ($ShownHTML == 0) { |
dd389be5 |
643 | $ShownHTML = 1; |
b74ba498 |
644 | |
645 | $body .= "<TABLE WIDTH=100% CELLSPACING=0 CELLPADDING=2 BORDER=0 BGCOLOR=\"$color[0]\"><TR>\n" . |
646 | "<TH ALIGN=\"left\" BGCOLOR=\"$color[9]\"><B>\n" . |
647 | _("Attachments") . ':' . |
648 | "</B></TH></TR><TR><TD>\n" . |
649 | "<TABLE CELLSPACING=0 CELLPADDING=1 BORDER=0>\n" . |
650 | formatAttachments ($message, $ent_id, $mailbox, $id) . |
651 | "</TABLE></TD></TR></TABLE>"; |
652 | |
653 | return( $body ); |
dd389be5 |
654 | } |
b74ba498 |
655 | |
8beafbbc |
656 | if ($message) { |
657 | if (!$message->entities) { |
658 | $type0 = strtolower($message->header->type0); |
659 | $type1 = strtolower($message->header->type1); |
66e1a00e |
660 | $name = decodeHeader($message->header->name); |
b74ba498 |
661 | |
8beafbbc |
662 | if ($message->header->entity_id != $ent_id) { |
888c82e2 |
663 | $filename = decodeHeader($message->header->filename); |
b74ba498 |
664 | if (trim($filename) == '') { |
665 | if (trim($name) == '') { |
666 | if( trim( $message->header->id ) == '' ) |
667 | $display_filename = 'untitled-[' . $message->header->entity_id . ']' ; |
668 | else |
669 | $display_filename = 'cid: ' . $message->header->id; |
670 | // $display_filename = 'untitled-[' . $message->header->entity_id . ']' ; |
671 | } else { |
672 | $display_filename = $name; |
673 | $filename = $name; |
674 | } |
8beafbbc |
675 | } else { |
676 | $display_filename = $filename; |
677 | } |
b74ba498 |
678 | |
8beafbbc |
679 | $urlMailbox = urlencode($mailbox); |
680 | $ent = urlencode($message->header->entity_id); |
b74ba498 |
681 | |
682 | $DefaultLink = |
bc104ef3 |
683 | "../src/download.php?startMessage=$startMessage&passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent"; |
dd389be5 |
684 | if ($where && $what) |
685 | $DefaultLink .= '&where=' . urlencode($where) . '&what=' . urlencode($what); |
701c9c6b |
686 | $Links['download link']['text'] = _("download"); |
b74ba498 |
687 | $Links['download link']['href'] = |
bc104ef3 |
688 | "../src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent"; |
dd389be5 |
689 | $ImageURL = ''; |
b74ba498 |
690 | |
dd389be5 |
691 | $HookResults = do_hook("attachment $type0/$type1", $Links, |
b74ba498 |
692 | $startMessage, $id, $urlMailbox, $ent, $DefaultLink, |
ef30bf50 |
693 | $display_filename, $where, $what); |
dd389be5 |
694 | |
695 | $Links = $HookResults[1]; |
696 | $DefaultLink = $HookResults[6]; |
697 | |
b74ba498 |
698 | $body .= '<TR><TD> </TD><TD>' . |
699 | "<A HREF=\"$DefaultLink\">$display_filename</A> </TD>" . |
700 | '<TD><SMALL><b>' . show_readable_size($message->header->size) . |
701 | '</b> </small></TD>' . |
702 | "<TD><SMALL>[ $type0/$type1 ] </SMALL></TD>" . |
703 | '<TD><SMALL>'; |
ea48eb25 |
704 | if ($message->header->description) |
dd389be5 |
705 | $body .= '<b>' . htmlspecialchars($message->header->description) . '</b>'; |
fde32e3f |
706 | $body .= '</SMALL></TD><TD><SMALL> '; |
b74ba498 |
707 | |
708 | |
dd389be5 |
709 | $SkipSpaces = 1; |
b74ba498 |
710 | foreach ($Links as $Val) { |
711 | if ($SkipSpaces) { |
dd389be5 |
712 | $SkipSpaces = 0; |
b74ba498 |
713 | } else { |
fde32e3f |
714 | $body .= ' | '; |
dd389be5 |
715 | } |
fde32e3f |
716 | $body .= '<a href="' . $Val['href'] . '">' . $Val['text'] . '</a>'; |
dd389be5 |
717 | } |
b74ba498 |
718 | |
dd389be5 |
719 | unset($Links); |
b74ba498 |
720 | |
fde32e3f |
721 | $body .= "</SMALL></TD></TR>\n"; |
8beafbbc |
722 | } |
8beafbbc |
723 | } else { |
724 | for ($i = 0; $i < count($message->entities); $i++) { |
725 | $body .= formatAttachments ($message->entities[$i], $ent_id, $mailbox, $id); |
726 | } |
8beafbbc |
727 | } |
b74ba498 |
728 | return( $body ); |
8beafbbc |
729 | } |
730 | } |
4809f489 |
731 | |
732 | |
733 | /** this function decodes the body depending on the encoding type. **/ |
d4467150 |
734 | function decodeBody($body, $encoding) { |
623332f3 |
735 | $body = str_replace("\r\n", "\n", $body); |
d4467150 |
736 | $encoding = strtolower($encoding); |
7831268e |
737 | |
358f007e |
738 | global $show_html_default; |
739 | |
b74ba498 |
740 | if ($encoding == 'quoted-printable') { |
ef3f274f |
741 | $body = quoted_printable_decode($body); |
b74ba498 |
742 | |
743 | |
ef3f274f |
744 | while (ereg("=\n", $body)) |
745 | $body = ereg_replace ("=\n", "", $body); |
c42d0808 |
746 | |
b74ba498 |
747 | } else if ($encoding == 'base64') { |
ef3f274f |
748 | $body = base64_decode($body); |
d4467150 |
749 | } |
b74ba498 |
750 | |
a47b5200 |
751 | // All other encodings are returned raw. |
ef3f274f |
752 | return $body; |
aceb0d5c |
753 | } |
a4c2cd49 |
754 | |
755 | |
b74ba498 |
756 | // This functions decode strings that is encoded according to |
a4c2cd49 |
757 | // RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text). |
2e434774 |
758 | function decodeHeader ($string) { |
b74ba498 |
759 | if (eregi('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=', |
a4c2cd49 |
760 | $string, $res)) { |
1fd97780 |
761 | if (ucfirst($res[2]) == "B") { |
762 | $replace = base64_decode($res[3]); |
a4c2cd49 |
763 | } else { |
1fd97780 |
764 | $replace = ereg_replace("_", " ", $res[3]); |
b74ba498 |
765 | // Convert lowercase Quoted Printable to uppercase for |
766 | // quoted_printable_decode to understand it. |
767 | while (ereg("(=(([0-9][abcdef])|([abcdef][0-9])|([abcdef][abcdef])))", $replace, $res)) { |
768 | $replace = str_replace($res[1], strtoupper($res[1]), $replace); |
769 | } |
a4c2cd49 |
770 | $replace = quoted_printable_decode($replace); |
771 | } |
772 | |
1fd97780 |
773 | $replace = charset_decode ($res[1], $replace); |
a4c2cd49 |
774 | |
9be55c4b |
775 | // Remove the name of the character set. |
776 | $string = eregi_replace ('=\\?([^?]+)\\?(q|b)\\?([^?]+)\\?=', |
a4c2cd49 |
777 | $replace, $string); |
9be55c4b |
778 | |
2e434774 |
779 | // In case there should be more encoding in the string: recurse |
780 | return (decodeHeader($string)); |
b74ba498 |
781 | } else |
a4c2cd49 |
782 | return ($string); |
783 | } |
784 | |
c3084273 |
785 | // Encode a string according to RFC 1522 for use in headers if it |
bb60fa3f |
786 | // contains 8-bit characters or anything that looks like it should |
787 | // be encoded. |
c3084273 |
788 | function encodeHeader ($string) { |
789 | global $default_charset; |
b74ba498 |
790 | |
f7b3ba37 |
791 | // Encode only if the string contains 8-bit characters or =? |
792 | $j = strlen( $string ); |
793 | $l = FALSE; // Must be encoded ? |
794 | $ret = ''; |
795 | for( $i=0; $i < $j; ++$i) { |
796 | switch( $string{$i} ) { |
797 | case '=': |
b74ba498 |
798 | $ret .= '=3D'; |
799 | break; |
800 | case '?': |
801 | $l = TRUE; |
802 | $ret .= '=3F'; |
803 | break; |
804 | case '_': |
805 | $ret .= '=5F'; |
806 | break; |
807 | case ' ': |
808 | $ret .= '_'; |
809 | break; |
810 | default: |
811 | $k = ord( $string{$i} ); |
812 | if( $k > 126 ) { |
813 | $ret .= sprintf("=%02X", $k); |
814 | $l = TRUE; |
815 | } else |
816 | $ret .= $string{$i}; |
f7b3ba37 |
817 | } |
818 | } |
b74ba498 |
819 | |
f7b3ba37 |
820 | if( $l ) |
821 | $string = "=?$default_charset?Q?$ret?="; |
b74ba498 |
822 | |
f7b3ba37 |
823 | return( $string ); |
824 | } |
c3084273 |
825 | |
a3daaaf3 |
826 | /* |
827 | Strips dangerous tags from html messages. |
828 | */ |
829 | |
830 | function MagicHTML( $body, $id ) { |
831 | |
832 | global $message, $PHP_SELF, $HTTP_SERVER_VARS; |
833 | |
834 | $j = strlen( $body ); // Legnth of the HTML |
835 | $ret = ''; // Returned string |
836 | $bgcolor = '#ffffff'; // Background style color (defaults to white) |
05c7f8f2 |
837 | $textcolor = '#000000'; // Foreground style color (defaults to black) |
a3daaaf3 |
838 | $leftmargin = ''; // Left margin style |
839 | $title = ''; // HTML title if any |
840 | |
841 | $i = 0; |
842 | while( $i < $j ) { |
843 | if( $body{$i} == '<' ) { |
05c7f8f2 |
844 | $pos = $i + 1; |
845 | $tag = ''; |
846 | while ($body{$pos} == ' ' || $body{$pos} == "\t" || |
847 | $body{$pos} == "\n") |
848 | $pos ++; |
849 | while (strlen($tag) < 4 && $body{$pos} != ' ' && |
850 | $body{$pos} != "\t" && $body{$pos} != "\n") { |
851 | $tag .= $body{$pos}; |
852 | $pos ++; |
853 | } |
a3daaaf3 |
854 | switch( strtoupper( $tag ) ) { |
855 | // Strips the entire tag and contents |
856 | case 'APPL': |
857 | case 'EMBB': |
858 | case 'FRAM': |
859 | case 'SCRI': |
860 | case 'OBJE': |
861 | $etg = '/' . $tag; |
862 | while( $body{$i+1}.$body{$i+2}.$body{$i+3}.$body{$i+4}.$body{$i+5} <> $etg && |
863 | $i < $j ) $i++; |
864 | while( $i < $j && $body{++$i} <> '>' ); |
865 | // $ret .= "<!-- $tag removed -->"; |
866 | break; |
867 | // Substitute Title |
868 | case 'TITL': |
869 | $i += 5; |
870 | while( $body{$i} <> '>' && // </title> |
871 | $i < $j ) |
872 | $i++; |
873 | $i++; |
874 | $title = ''; |
875 | while( $body{$i} <> '<' && // </title> |
876 | $i < $j ) { |
877 | $title .= $body{$i}; |
878 | $i++; |
879 | } |
880 | $i += 7; |
881 | break; |
882 | // Destroy these tags |
883 | case 'HTML': |
884 | case 'HEAD': |
885 | case '/HTM': |
886 | case '/HEA': |
887 | case '!DOC': |
888 | case 'META': |
889 | case 'DIV ': |
890 | case '/DIV': |
891 | case '!-- ': |
892 | $i += 4; |
893 | while( $body{$i} <> '>' && |
894 | $i < $j ) |
895 | $i++; |
896 | // $i++; |
897 | break; |
898 | case 'STYL': |
899 | $i += 5; |
900 | while( $body{$i} <> '>' && // </title> |
901 | $i < $j ) |
902 | $i++; |
903 | $i++; |
904 | // We parse the style to look for interesting stuff |
905 | $styleblk = ''; |
906 | while( $body{$i} <> '>' && |
907 | $i < $j ) { |
908 | // First we get the name of the style |
909 | $style = ''; |
910 | while( $body{$i} <> '>' && |
911 | $body{$i} <> '<' && |
912 | $body{$i} <> '{' && |
913 | $i < $j ) { |
914 | if( isnoSep( $body{$i} ) ) |
915 | $style .= $body{$i}; |
916 | $i++; |
917 | } |
5487a8d0 |
918 | stripComments( $i, $j, $body ); |
a3daaaf3 |
919 | $style = strtoupper( trim( $style ) ); |
920 | if( $style == 'BODY' ) { |
921 | // Next we look into the definitions of the body style |
922 | while( $body{$i} <> '>' && |
923 | $body{$i} <> '}' && |
924 | $i < $j ) { |
925 | // We look for the background color if any. |
926 | if( substr( $body, $i, 17 ) == 'BACKGROUND-COLOR:' ) { |
927 | $i += 17; |
928 | $bgcolor = getStyleData( $i, $j, $body ); |
929 | } elseif ( substr( $body, $i, 12 ) == 'MARGIN-LEFT:' ) { |
930 | $i += 12; |
931 | $leftmargin = getStyleData( $i, $j, $body ); |
932 | } |
933 | $i++; |
934 | } |
935 | } else { |
936 | // Other style are mantained |
937 | $styleblk .= "$style "; |
938 | while( $body{$i} <> '>' && |
939 | $body{$i} <> '<' && |
940 | $body{$i} <> '}' && |
941 | $i < $j ) { |
942 | $styleblk .= $body{$i}; |
943 | $i++; |
944 | } |
945 | $styleblk .= $body{$i}; |
946 | } |
5487a8d0 |
947 | stripComments( $i, $j, $body ); |
a3daaaf3 |
948 | if( $body{$i} <> '>' ) |
949 | $i++; |
950 | } |
951 | if( $styleblk <> '' ) |
952 | $ret .= "<style>$styleblk"; |
953 | break; |
954 | case 'BODY': |
955 | if( $title <> '' ) |
956 | $ret .= '<b>' . _("Title:") . " </b>$title<br>\n"; |
957 | $ret .= "<TABLE"; |
958 | $i += 5; |
6dc0e464 |
959 | if (! isset($base)) |
960 | $base = ''; |
961 | $ret .= stripEvent( $i, $j, $body, $id, $base ); |
962 | $ret .= " bgcolor=$bgcolor width=\"100%\"><tr>"; |
a3daaaf3 |
963 | if( $leftmargin <> '' ) |
964 | $ret .= "<td width=$leftmargin> </td>"; |
965 | $ret .= '<td>'; |
6dc0e464 |
966 | if (strtolower($bgcolor) == 'ffffff' || |
967 | strtolower($bgcolor) == '#ffffff') |
968 | $ret .= '<font color=#000000>'; |
a3daaaf3 |
969 | break; |
970 | case 'BASE': |
971 | $i += 5; |
972 | $base = ''; |
973 | while( !isNoSep( $body{$i} ) && |
974 | $i < $j ) |
975 | $i++; |
976 | if( strcasecmp( substr( $base, 0, 4 ), 'href' ) ) { |
977 | $i += 5; |
978 | while( !isNoSep( $body{$i} ) && |
979 | $i < $j ) |
980 | $i++; |
981 | while( $body{$i} <> '>' && |
982 | $i < $j ) { |
983 | if( $body{$i} <> '"' ) |
984 | $base .= $body{$i}; |
985 | $i++; |
986 | } |
987 | // Debuging $ret .= "<!-- base == $base -->"; |
988 | if( strcasecmp( substr( $base, 0, 4 ), 'file' ) <> 0 ) |
989 | $ret .= "\n<BASE HREF=\"$base\">\n"; |
990 | } |
991 | break; |
992 | case '/BOD': |
05c7f8f2 |
993 | $ret .= '</font></td></tr></TABLE>'; |
a3daaaf3 |
994 | $i += 6; |
995 | break; |
996 | default: |
997 | // Following tags can contain some event handler, lets search it |
998 | stripComments( $i, $j, $body ); |
4aaea201 |
999 | if (! isset($base)) |
1000 | $base = ''; |
a3daaaf3 |
1001 | $ret .= stripEvent( $i, $j, $body, $id, $base ) . '>'; |
1002 | // $ret .= "<!-- $tag detected -->"; |
1003 | } |
1004 | } else { |
1005 | $ret .= $body{$i}; |
1006 | } |
1007 | $i++; |
1008 | } |
1009 | |
1010 | return( "\n\n<!-- HTML Output ahead -->\n" . |
1011 | $ret . |
1012 | "\n<!-- END of HTML Output --><base href=\"". |
1013 | $HTTP_SERVER_VARS["SERVER_NAME"] . substr( $PHP_SELF, 0, strlen( $PHP_SELF ) - 13 ) . |
1014 | "\">\n\n" ); |
1015 | } |
1016 | |
1017 | function isNoSep( $char ) { |
1018 | |
1019 | switch( $char ) { |
1020 | case ' ': |
1021 | case "\n": |
1022 | case "\t": |
1023 | case "\r": |
1024 | case '>': |
1025 | case '"': |
1026 | return( FALSE ); |
1027 | break; |
1028 | default: |
1029 | return( TRUE ); |
1030 | } |
1031 | |
1032 | } |
1033 | |
1034 | /* |
1035 | The following function is usefull to remove extra data that can cause |
1036 | html not to display properly. Especialy with MS stuff. |
1037 | */ |
1038 | |
1039 | function stripComments( &$i, $j, &$body ) { |
1040 | |
1041 | while( $body{$i}.$body{$i+1}.$body{$i+2}.$body{$i+3} == '<!--' && |
1042 | $i < $j ) { |
1043 | $i += 5; |
1044 | while( $body{$i-2}.$body{$i-1}.$body{$i} <> '-->' && |
1045 | $i < $j ) |
1046 | $i++; |
1047 | $i++; |
1048 | } |
1049 | |
1050 | return; |
1051 | |
1052 | } |
1053 | |
1054 | /* Gets the style data of a specific style */ |
1055 | |
1056 | function getStyleData( &$i, $j, &$body ) { |
1057 | |
1058 | // We skip spaces |
1059 | while( $body{$i} <> '>' && !isNoSep( $body{$i} ) && |
1060 | $i < $j ) { |
1061 | $i++; |
1062 | } |
1063 | // And get the color |
1064 | $ret = ''; |
1065 | while( isNoSep( $body{$i} ) && |
1066 | $i < $j ) { |
1067 | $ret .= $body{$i}; |
1068 | $i++; |
1069 | } |
1070 | |
1071 | return( $ret ); |
1072 | } |
1073 | |
1074 | /* |
1075 | Private function for strip_dangerous_tag. Look for event based coded and "remove" it |
1076 | change on with no (onload -> noload) |
1077 | */ |
1078 | |
1079 | function stripEvent( &$i, $j, &$body, $id, $base ) { |
1080 | |
1081 | global $message; |
1082 | |
1083 | $ret = ''; |
1084 | |
1085 | while( $body{$i} <> '>' && |
1086 | $i < $j ) { |
1087 | $etg = strtolower($body{$i}.$body{$i+1}.$body{$i+2}); |
1088 | switch( $etg ) { |
1089 | case '../': |
1090 | // Retrolinks are not allowed without a base because they mess with SM security |
1091 | if( $base == '' ) { |
1092 | $i += 2; |
1093 | } else { |
1094 | $ret .= '.'; |
1095 | } |
1096 | break; |
1097 | case 'cid': |
1098 | // Internal link |
1099 | $k = $i-1; |
1100 | if( $body{$i+3} == ':') { |
1101 | $i +=4; |
1102 | $name = ''; |
1103 | while( isNoSep( $body{$i} ) && |
1104 | $i < $j ) |
1105 | $name .= $body{$i++}; |
1106 | if( $name <> '' ) { |
1107 | $ret .= "../src/download.php?absolute_dl=true&passed_id=$id&mailbox=" . |
1108 | urlencode( $message->header->mailbox ) . |
1109 | "&passed_ent_id=" . find_ent_id( $name, $message ); |
1110 | if( $body{$k} == '"' ) |
1111 | $ret .= '" '; |
1112 | else |
1113 | $ret .= ' '; |
1114 | } |
1115 | if( $body{$i} == '>' ) |
1116 | $i -= 1; |
1117 | } |
1118 | break; |
1119 | case ' on': |
1120 | case "\non": |
1121 | case "\ron": |
1122 | case "\ton": |
1123 | $ret .= ' no'; |
1124 | $i += 2; |
1125 | break; |
1126 | case 'pt:': |
1127 | if( strcasecmp( $body{$i-4}.$body{$i-3}.$body{$i-2}.$body{$i-1}.$body{$i}.$body{$i+1}.$body{$i+2}, 'script:') == 0 ) { |
1128 | $ret .= '_no/'; |
1129 | } else { |
1130 | $ret .= $etg; |
1131 | } |
1132 | $i += 2; |
1133 | break; |
1134 | default: |
1135 | $ret .= $body{$i}; |
1136 | } |
1137 | $i++; |
1138 | } |
1139 | return( $ret ); |
1140 | } |
1141 | |
1142 | |
1143 | /* This function trys to locate the entity_id of a specific mime element */ |
1144 | |
1145 | function find_ent_id( $id, $message ) { |
1146 | |
1147 | $ret = ''; |
1148 | for ($i=0; $ret == '' && $i < count($message->entities); $i++) { |
1149 | |
1150 | if( $message->entities[$i]->header->entity_id == '' ) { |
1151 | $ret = find_ent_id( $id, $message->entities[$i] ); |
1152 | } else { |
1153 | if( strcasecmp( $message->entities[$i]->header->id, $id ) == 0 ) |
1154 | $ret = $message->entities[$i]->header->entity_id; |
1155 | } |
1156 | |
1157 | } |
1158 | |
1159 | return( $ret ); |
1160 | |
1161 | } |
5487a8d0 |
1162 | ?> |