| 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 | require_once('../functions/imap.php'); |
| 16 | require_once('../functions/attachment_common.php'); |
| 8beafbbc |
17 | |
| 35586184 |
18 | /** Setting up the objects that have the structure for the message **/ |
| 19 | class msg_header { |
| 20 | /** msg_header contains generic variables for values that **/ |
| 21 | /** could be in a header. **/ |
| b74ba498 |
22 | |
| 88cb1b4d |
23 | var $type0 = '', $type1 = '', $boundary = '', $charset = '', |
| 24 | $encoding = '', $size = 0, $to = array(), $from = '', $date = '', |
| 25 | $cc = array(), $bcc = array(), $reply_to = '', $subject = '', |
| 26 | $id = 0, $mailbox = '', $description = '', $filename = '', |
| c9d78ab4 |
27 | $entity_id = 0, $message_id = 0, $name = '', $priority = 3, $type = ''; |
| 35586184 |
28 | } |
| b74ba498 |
29 | |
| 451f74a2 |
30 | class message { |
| 31 | /** message is the object that contains messages. It is a recursive |
| 32 | object in that through the $entities variable, it can contain |
| 33 | more objects of type message. See documentation in mime.txt for |
| 34 | a better description of how this works. |
| 35 | **/ |
| 77b88425 |
36 | var $header = '', $entities = array(); |
| 37 | |
| 451f74a2 |
38 | function addEntity ($msg) { |
| 39 | $this->entities[] = $msg; |
| 40 | } |
| 41 | } |
| 8beafbbc |
42 | |
| 451f74a2 |
43 | /* --------------------------------------------------------------------------------- */ |
| 44 | /* MIME DECODING */ |
| 45 | /* --------------------------------------------------------------------------------- */ |
| b74ba498 |
46 | |
| 451f74a2 |
47 | /* This function gets the structure of a message and stores it in the "message" class. |
| 48 | * It will return this object for use with all relevant header information and |
| 49 | * fully parsed into the standard "message" object format. |
| 50 | */ |
| 51 | function mime_structure ($imap_stream, $header) { |
| 52 | |
| 451f74a2 |
53 | $ssid = sqimap_session_id(); |
| 54 | $lsid = strlen( $ssid ); |
| 55 | $id = $header->id; |
| 56 | fputs ($imap_stream, "$ssid FETCH $id BODYSTRUCTURE\r\n"); |
| 57 | // |
| 58 | // This should use sqimap_read_data instead of reading it itself |
| 59 | // |
| 77b88425 |
60 | $read = fgets ($imap_stream, 9216); |
| 451f74a2 |
61 | $bodystructure = ''; |
| 62 | while ( substr($read, 0, $lsid) <> $ssid && |
| 63 | !feof( $imap_stream ) ) { |
| 64 | $bodystructure .= $read; |
| 77b88425 |
65 | $read = fgets ($imap_stream, 9216); |
| 451f74a2 |
66 | } |
| 67 | $read = $bodystructure; |
| 77b88425 |
68 | |
| 451f74a2 |
69 | // isolate the body structure and remove beginning and end parenthesis |
| 70 | $read = trim(substr ($read, strpos(strtolower($read), 'bodystructure') + 13)); |
| c9d78ab4 |
71 | |
| 451f74a2 |
72 | $read = trim(substr ($read, 0, -1)); |
| 73 | $end = mime_match_parenthesis(0, $read); |
| 74 | while ($end == strlen($read)-1) { |
| 75 | $read = trim(substr ($read, 0, -1)); |
| 76 | $read = trim(substr ($read, 1)); |
| 77 | $end = mime_match_parenthesis(0, $read); |
| 78 | } |
| 77b88425 |
79 | |
| 451f74a2 |
80 | $msg = mime_parse_structure ($read, 0); |
| 81 | $msg->header = $header; |
| 77b88425 |
82 | |
| 451f74a2 |
83 | return( $msg ); |
| 84 | } |
| b74ba498 |
85 | |
| 451f74a2 |
86 | /* this starts the parsing of a particular structure. It is called recursively, |
| 87 | * so it can be passed different structures. It returns an object of type |
| 88 | * $message. |
| 89 | * First, it checks to see if it is a multipart message. If it is, then it |
| 90 | * handles that as it sees is necessary. If it is just a regular entity, |
| 91 | * then it parses it and adds the necessary header information (by calling out |
| 92 | * to mime_get_elements() |
| 93 | */ |
| 94 | function mime_parse_structure ($structure, $ent_id) { |
| 164800ad |
95 | global $mailbox; |
| c9d78ab4 |
96 | $properties = array(); |
| 451f74a2 |
97 | $msg = new message(); |
| 98 | if ($structure{0} == '(') { |
| c9d78ab4 |
99 | $old_ent_id = $ent_id; |
| 451f74a2 |
100 | $ent_id = mime_new_element_level($ent_id); |
| 101 | $start = $end = -1; |
| 102 | do { |
| 103 | $start = $end+1; |
| 104 | $end = mime_match_parenthesis ($start, $structure); |
| 164800ad |
105 | |
| 106 | /* check if we are dealing with a new entity-level */ |
| 107 | $i = strrpos($ent_id,'.'); |
| 108 | if ($i>0) { |
| 109 | $ent = substr($ent_id, $i+1); |
| 110 | } else { |
| 111 | $ent = ''; |
| 112 | } |
| c9d78ab4 |
113 | /* add "forgotten" parent entities (alternative and relative) */ |
| 164800ad |
114 | if ($ent == '0') { |
| 115 | /* new entity levels have information about the type (type1) and |
| 116 | * the properties. This information is situated at the end of the |
| 117 | * structure string like for example (example between the brackets) |
| 118 | * [ "RELATED" ("BOUNDARY" "myboundary" "TYPE" "plain/html") ] |
| 119 | */ |
| 120 | |
| 121 | /* get the involved properties for parsing to mime_get_properties */ |
| 122 | $startprop = strrpos($structure,'('); |
| 123 | $properties_str = substr($structure,$startprop); |
| 124 | $endprop = mime_match_parenthesis ($startprop, $structure); |
| 125 | $propstr = substr($structure, $startprop + 1, ($endprop - $startprop)-1); |
| 126 | /* cut off the used properties */ |
| 127 | if ($startprop) { |
| 128 | $structure_end = substr($structure, $endprop+2); |
| 129 | $structure = trim(substr($structure,0,$startprop)); |
| 130 | } |
| 164800ad |
131 | /* get type1 */ |
| 132 | $pos = strrpos($structure,' '); |
| 008989da |
133 | if ($structure{$pos+1} =='(') $pos++; |
| 134 | |
| 164800ad |
135 | $type1 = strtolower(substr($structure, $pos+2, (count($structure)-2))); |
| 164800ad |
136 | /* cut off type1 */ |
| 137 | if ($pos && $startprop) { |
| 138 | $structure = trim(substr($structure, 0, $pos)); |
| 139 | } |
| 140 | |
| 141 | /* process the found information */ |
| 142 | $properties = mime_get_props($properties, $properties_str); |
| c9d78ab4 |
143 | if (count($properties)>0) { |
| 144 | $msg->header->entity_id = $old_ent_id; |
| 145 | $msg->header->type0 = 'multipart'; |
| 146 | $msg->header->type1 = $type1; |
| 164800ad |
147 | for ($i=0; $i < count($properties); $i++) { |
| 148 | $msg->header->{$properties[$i]['name']} = $properties[$i]['value']; |
| 149 | } |
| c9d78ab4 |
150 | } |
| 164800ad |
151 | $structure = $structure . ' ' . $structure_end; |
| 152 | } |
| 153 | $element = substr($structure, $start+1, ($end - $start)-1); |
| 154 | $ent_id = mime_increment_id ($ent_id); |
| 155 | $newmsg = mime_parse_structure ($element, $ent_id); |
| 156 | /* set mailbox in case of message/rfc822 entities */ |
| 157 | if (isset($newmsg->header->type0) && isset($newmsg->header->type1)) { |
| 158 | if ($newmsg->header->type0 == 'message' && $newmsg->header->type1 == 'rfc822') { |
| 159 | $newmsg->header->mailbox=$mailbox; |
| c9d78ab4 |
160 | } |
| 161 | } |
| 164800ad |
162 | $msg->addEntity ($newmsg); |
| 451f74a2 |
163 | |
| 451f74a2 |
164 | } while ($structure{$end+1} == '('); |
| 165 | } else { |
| 166 | // parse the elements |
| c9d78ab4 |
167 | $msg = mime_get_element ($structure, $msg, $ent_id); |
| 451f74a2 |
168 | } |
| 169 | return $msg; |
| 170 | } |
| e4a256af |
171 | |
| 164800ad |
172 | |
| 451f74a2 |
173 | /* Increments the element ID. An element id can look like any of |
| 174 | * the following: 1, 1.2, 4.3.2.4.1, etc. This function increments |
| 175 | * the last number of the element id, changing 1.2 to 1.3. |
| 176 | */ |
| 177 | function mime_increment_id ($id) { |
| 178 | |
| 77b88425 |
179 | if (strpos($id, '.')) { |
| 180 | $first = substr($id, 0, strrpos($id, '.')); |
| 181 | $last = substr($id, strrpos($id, '.')+1); |
| 451f74a2 |
182 | $last++; |
| 77b88425 |
183 | $new = $first . '.' .$last; |
| 451f74a2 |
184 | } else { |
| 185 | $new = $id + 1; |
| 186 | } |
| 77b88425 |
187 | |
| 451f74a2 |
188 | return $new; |
| 189 | } |
| 190 | |
| 191 | /* |
| 192 | * See comment for mime_increment_id(). |
| 193 | * This adds another level on to the entity_id changing 1.3 to 1.3.0 |
| 194 | * NOTE: 1.3.0 is not a valid element ID. It MUST be incremented |
| 195 | * before it can be used. I left it this way so as not to have |
| 196 | * to make a special case if it is the first entity_id. It |
| 197 | * always increments it, and that works fine. |
| 198 | */ |
| 199 | function mime_new_element_level ($id) { |
| 200 | |
| 77b88425 |
201 | if (!$id) { |
| 202 | $id = 0; |
| 203 | } else { |
| 204 | $id = $id . '.0'; |
| 205 | } |
| 451f74a2 |
206 | |
| 77b88425 |
207 | return( $id ); |
| 451f74a2 |
208 | } |
| 209 | |
| 210 | function mime_get_element (&$structure, $msg, $ent_id) { |
| 211 | |
| 212 | $elem_num = 1; |
| 213 | $msg->header = new msg_header(); |
| 214 | $msg->header->entity_id = $ent_id; |
| 215 | $properties = array(); |
| 451f74a2 |
216 | while (strlen($structure) > 0) { |
| 217 | $structure = trim($structure); |
| 218 | $char = $structure{0}; |
| 219 | |
| 220 | if (strtolower(substr($structure, 0, 3)) == 'nil') { |
| 221 | $text = ''; |
| 222 | $structure = substr($structure, 3); |
| 223 | } else if ($char == '"') { |
| 224 | // loop through until we find the matching quote, and return that as a string |
| 225 | $pos = 1; |
| 226 | $text = ''; |
| 227 | while ( ($char = $structure{$pos} ) <> '"' && $pos < strlen($structure)) { |
| 228 | $text .= $char; |
| 229 | $pos++; |
| 230 | } |
| 231 | $structure = substr($structure, strlen($text) + 2); |
| 795d42e2 |
232 | } else if ($char == '{') { |
| 233 | /** |
| 234 | * loop through until we find the matching quote, |
| 235 | * and return that as a string |
| 236 | */ |
| 237 | $pos = 1; |
| 238 | $len = ''; |
| 239 | while (($char = $structure{$pos}) != '}' |
| 240 | && $pos < strlen($structure)) { |
| 241 | $len .= $char; |
| 242 | $pos++; |
| 243 | } |
| 244 | $structure = substr($structure, strlen($len) + 4); |
| 245 | $text = substr($structure, 0, $len); |
| 246 | $structure = substr($structure, $len + 1); |
| 451f74a2 |
247 | } else if ($char == '(') { |
| 248 | // comment me |
| 249 | $end = mime_match_parenthesis (0, $structure); |
| 250 | $sub = substr($structure, 1, $end-1); |
| 251 | $properties = mime_get_props($properties, $sub); |
| 252 | $structure = substr($structure, strlen($sub) + 2); |
| 253 | } else { |
| 254 | // loop through until we find a space or an end parenthesis |
| 255 | $pos = 0; |
| 256 | $char = $structure{$pos}; |
| 257 | $text = ''; |
| 258 | while ($char != ' ' && $char != ')' && $pos < strlen($structure)) { |
| 259 | $text .= $char; |
| 260 | $pos++; |
| 261 | $char = $structure{$pos}; |
| 262 | } |
| 263 | $structure = substr($structure, strlen($text)); |
| 264 | } |
| 265 | |
| 266 | // This is where all the text parts get put into the header |
| 267 | switch ($elem_num) { |
| 268 | case 1: |
| 269 | $msg->header->type0 = strtolower($text); |
| 270 | break; |
| 271 | case 2: |
| 272 | $msg->header->type1 = strtolower($text); |
| 273 | break; |
| 274 | case 4: // Id |
| 275 | // Invisimail enclose images with <> |
| 276 | $msg->header->id = str_replace( '<', '', str_replace( '>', '', $text ) ); |
| 277 | break; |
| 278 | case 5: |
| 279 | $msg->header->description = $text; |
| 280 | break; |
| 281 | case 6: |
| 282 | $msg->header->encoding = strtolower($text); |
| 283 | break; |
| 284 | case 7: |
| 285 | $msg->header->size = $text; |
| 286 | break; |
| 287 | default: |
| 288 | if ($msg->header->type0 == 'text' && $elem_num == 8) { |
| 289 | // This is a plain text message, so lets get the number of lines |
| 290 | // that it contains. |
| 291 | $msg->header->num_lines = $text; |
| 292 | |
| 293 | } else if ($msg->header->type0 == 'message' && $msg->header->type1 == 'rfc822' && $elem_num == 8) { |
| 294 | // This is an encapsulated message, so lets start all over again and |
| 295 | // parse this message adding it on to the existing one. |
| 296 | $structure = trim($structure); |
| 297 | if ( $structure{0} == '(' ) { |
| 298 | $e = mime_match_parenthesis (0, $structure); |
| 299 | $structure = substr($structure, 0, $e); |
| 300 | $structure = substr($structure, 1); |
| 301 | $m = mime_parse_structure($structure, $msg->header->entity_id); |
| 302 | |
| 303 | // the following conditional is there to correct a bug that wasn't |
| 304 | // incrementing the entity IDs correctly because of the special case |
| 305 | // that message/rfc822 is. This fixes it fine. |
| 306 | if (substr($structure, 1, 1) != '(') |
| 307 | $m->header->entity_id = mime_increment_id(mime_new_element_level($ent_id)); |
| 308 | |
| 309 | // Now we'll go through and reformat the results. |
| 310 | if ($m->entities) { |
| 311 | for ($i=0; $i < count($m->entities); $i++) { |
| 312 | $msg->addEntity($m->entities[$i]); |
| 313 | } |
| 314 | } else { |
| 315 | $msg->addEntity($m); |
| 316 | } |
| 317 | $structure = ""; |
| 318 | } |
| 319 | } |
| 320 | break; |
| 321 | } |
| 322 | $elem_num++; |
| 323 | $text = ""; |
| 324 | } |
| 325 | // loop through the additional properties and put those in the various headers |
| c9d78ab4 |
326 | for ($i=0; $i < count($properties); $i++) { |
| 327 | $msg->header->{$properties[$i]['name']} = $properties[$i]['value']; |
| 328 | } |
| 451f74a2 |
329 | |
| 330 | return $msg; |
| 331 | } |
| 332 | |
| 333 | /* |
| 334 | * I did most of the MIME stuff yesterday (June 20, 2000), but I couldn't |
| 335 | * figure out how to do this part, so I decided to go to bed. I woke up |
| 336 | * in the morning and had a flash of insight. I went to the white-board |
| 337 | * and scribbled it out, then spent a bit programming it, and this is the |
| 338 | * result. Nothing complicated, but I think my brain was fried yesterday. |
| 339 | * Funny how that happens some times. |
| 340 | * |
| 341 | * This gets properties in a nested parenthesisized list. For example, |
| 342 | * this would get passed something like: ("attachment" ("filename" "luke.tar.gz")) |
| 343 | * This returns an array called $props with all paired up properties. |
| 344 | * It ignores the "attachment" for now, maybe that should change later |
| 345 | * down the road. In this case, what is returned is: |
| 346 | * $props[0]["name"] = "filename"; |
| 347 | * $props[0]["value"] = "luke.tar.gz"; |
| 348 | */ |
| 349 | function mime_get_props ($props, $structure) { |
| 350 | |
| 351 | while (strlen($structure) > 0) { |
| 352 | $structure = trim($structure); |
| 353 | $char = $structure{0}; |
| 451f74a2 |
354 | if ($char == '"') { |
| 355 | $pos = 1; |
| 356 | $tmp = ''; |
| 357 | while ( ( $char = $structure{$pos} ) != '"' && |
| 358 | $pos < strlen($structure)) { |
| 359 | $tmp .= $char; |
| 360 | $pos++; |
| 361 | } |
| 362 | $structure = trim(substr($structure, strlen($tmp) + 2)); |
| 363 | $char = $structure{0}; |
| 364 | |
| 365 | if ($char == '"') { |
| 366 | $pos = 1; |
| 367 | $value = ''; |
| 368 | while ( ( $char = $structure{$pos} ) != '"' && |
| 369 | $pos < strlen($structure) ) { |
| 370 | $value .= $char; |
| 371 | $pos++; |
| 372 | } |
| c9d78ab4 |
373 | $structure = trim(substr($structure, strlen($value) + 2)); |
| 451f74a2 |
374 | $k = count($props); |
| 375 | $props[$k]['name'] = strtolower($tmp); |
| 376 | $props[$k]['value'] = $value; |
| c9d78ab4 |
377 | if ($structure != '') { |
| 378 | mime_get_props($props, $structure); |
| 379 | } else { |
| 380 | return $props; |
| 381 | } |
| 451f74a2 |
382 | } else if ($char == '(') { |
| 383 | $end = mime_match_parenthesis (0, $structure); |
| 384 | $sub = substr($structure, 1, $end-1); |
| c9d78ab4 |
385 | if (! isset($props)) |
| 386 | $props = array(); |
| 387 | $props = mime_get_props($props, $sub); |
| 388 | $structure = substr($structure, strlen($sub) + 2); |
| 389 | return $props; |
| 451f74a2 |
390 | } |
| 451f74a2 |
391 | } else if ($char == '(') { |
| 392 | $end = mime_match_parenthesis (0, $structure); |
| 393 | $sub = substr($structure, 1, $end-1); |
| 394 | $props = mime_get_props($props, $sub); |
| 395 | $structure = substr($structure, strlen($sub) + 2); |
| 396 | return $props; |
| 397 | } else { |
| 398 | return $props; |
| 399 | } |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | /* |
| 404 | * Matches parenthesis. It will return the position of the matching |
| 405 | * parenthesis in $structure. For instance, if $structure was: |
| 406 | * ("text" "plain" ("val1name", "1") nil ... ) |
| 407 | * x x |
| 408 | * then this would return 42 to match up those two. |
| 409 | */ |
| 410 | function mime_match_parenthesis ($pos, $structure) { |
| 411 | |
| 412 | $j = strlen( $structure ); |
| 413 | |
| ec41cfc7 |
414 | /* |
| 415 | * ignore all extra characters |
| 416 | * If inside of a quoted string or literal, skip it -- Boundary IDs and other |
| 417 | * things can have ) in them. |
| 418 | */ |
| 419 | |
| 451f74a2 |
420 | if ( $structure{$pos} != '(' ) { |
| 421 | return( $j ); |
| 422 | } |
| 423 | |
| 424 | while ( $pos < $j ) { |
| 425 | $pos++; |
| 426 | if ($structure{$pos} == ')') { |
| 8beafbbc |
427 | return $pos; |
| ec41cfc7 |
428 | } elseif ($structure{$pos} == '"') { /* check for quoted string */ |
| b74ba498 |
429 | $pos++; |
| 451f74a2 |
430 | while ( $structure{$pos} != '"' && |
| 431 | $pos < $j ) { |
| 432 | if (substr($structure, $pos, 2) == '\\"') { |
| b74ba498 |
433 | $pos++; |
| 451f74a2 |
434 | } elseif (substr($structure, $pos, 2) == '\\\\') { |
| b74ba498 |
435 | $pos++; |
| 451f74a2 |
436 | } |
| b74ba498 |
437 | $pos++; |
| 5ffe5a7e |
438 | } |
| ec41cfc7 |
439 | } elseif ($structure{$pos} == '{') { /* check for literal */ |
| 440 | $str = substr($structure, $pos); |
| 441 | $pos++; |
| 442 | if (preg_match("/^\{(\d+)\}.*/",$str,$reg)) { |
| 443 | $pos = $pos + strlen($reg[1]) + $reg[1] + 2; |
| 444 | } |
| 451f74a2 |
445 | } elseif ( $structure{$pos} == '(' ) { |
| 8beafbbc |
446 | $pos = mime_match_parenthesis ($pos, $structure); |
| 451f74a2 |
447 | } |
| 448 | } |
| 449 | echo _("Error decoding mime structure. Report this as a bug!") . '<br>'; |
| 450 | return( $pos ); |
| 451 | } |
| 452 | |
| 93f92f03 |
453 | function mime_fetch_body($imap_stream, $id, $ent_id) { |
| 09a4bde3 |
454 | |
| 455 | /* |
| 456 | * do a bit of error correction. If we couldn't find the entity id, just guess |
| 457 | * that it is the first one. That is usually the case anyway. |
| 458 | */ |
| 459 | if (!$ent_id) { |
| 451f74a2 |
460 | $ent_id = 1; |
| 09a4bde3 |
461 | } |
| 6ab1bd9e |
462 | $cmd = "FETCH $id BODY[$ent_id]"; |
| 77b88425 |
463 | |
| 93f92f03 |
464 | $data = sqimap_run_command ($imap_stream, $cmd, true, $response, $message); |
| 77b88425 |
465 | do { |
| e976319c |
466 | $topline = trim(array_shift( $data )); |
| 467 | } while( $topline && $topline[0] == '*' && !preg_match( '/\* [0-9]+ FETCH.*/i', $topline )) ; |
| 451f74a2 |
468 | $wholemessage = implode('', $data); |
| 469 | if (ereg('\\{([^\\}]*)\\}', $topline, $regs)) { |
| 77b88425 |
470 | |
| 451f74a2 |
471 | $ret = substr( $wholemessage, 0, $regs[1] ); |
| 472 | /* |
| 473 | There is some information in the content info header that could be important |
| 474 | in order to parse html messages. Let's get them here. |
| 475 | */ |
| 476 | if ( $ret{0} == '<' ) { |
| 1c72b151 |
477 | $data = sqimap_run_command ($imap_stream, "FETCH $id BODY[$ent_id.MIME]", true, $response, $message); |
| e5ea9327 |
478 | /* BASE within HTML documents is illegal (see w3 spec) |
| 479 | * $base = ''; |
| 480 | * $k = 10; |
| 481 | * foreach( $data as $d ) { |
| 482 | * if ( substr( $d, 0, 13 ) == 'Content-Base:' ) { |
| 483 | * $j = strlen( $d ); |
| 484 | * $i = 13; |
| 485 | * $base = ''; |
| 486 | * while ( $i < $j && |
| 487 | * ( !isNoSep( $d{$i} ) || $d{$i} == '"' ) ) |
| 488 | * $i++; |
| 489 | * while ( $i < $j ) { |
| 490 | * if ( isNoSep( $d{$i} ) ) |
| 491 | * $base .= $d{$i}; |
| 492 | * $i++; |
| 493 | * } |
| 494 | * $k = 0; |
| 495 | * } elseif ( $k == 1 && !isnosep( $d{0} ) ) { |
| 496 | * $base .= substr( $d, 1 ); |
| 497 | * } |
| 498 | * $k++; |
| 499 | * } |
| 500 | * if ( $base <> '' ) { |
| 501 | * $ret = "<base href=\"$base\">" . $ret; |
| 502 | * } |
| 7e235a1a |
503 | * */ |
| 451f74a2 |
504 | } |
| 505 | } else if (ereg('"([^"]*)"', $topline, $regs)) { |
| 506 | $ret = $regs[1]; |
| 507 | } else { |
| 508 | global $where, $what, $mailbox, $passed_id, $startMessage; |
| e5ea9327 |
509 | $par = 'mailbox=' . urlencode($mailbox) . "&passed_id=$passed_id"; |
| 451f74a2 |
510 | if (isset($where) && isset($what)) { |
| e5ea9327 |
511 | $par .= '&where='. urlencode($where) . "&what=" . urlencode($what); |
| a3daaaf3 |
512 | } else { |
| e5ea9327 |
513 | $par .= "&startMessage=$startMessage&show_more=0"; |
| 451f74a2 |
514 | } |
| e5ea9327 |
515 | $par .= '&response=' . urlencode($response) . |
| 516 | '&message=' . urlencode($message). |
| 517 | '&topline=' . urlencode($topline); |
| a019eeb8 |
518 | |
| 346817d4 |
519 | echo '<tt><br>' . |
| 520 | '<table width="80%"><tr>' . |
| 521 | '<tr><td colspan=2>' . |
| 451f74a2 |
522 | _("Body retrieval error. The reason for this is most probably that the message is malformed. Please help us making future versions better by submitting this message to the developers knowledgebase!") . |
| 346817d4 |
523 | " <A HREF=\"../src/retrievalerror.php?$par\"><br>" . |
| 524 | _("Submit message") . '</A><BR> ' . |
| 525 | '</td></tr>' . |
| 526 | '<td><b>' . _("Command:") . "</td><td>$cmd</td></tr>" . |
| 527 | '<td><b>' . _("Response:") . "</td><td>$response</td></tr>" . |
| 528 | '<td><b>' . _("Message:") . "</td><td>$message</td></tr>" . |
| 529 | '<td><b>' . _("FETCH line:") . "</td><td>$topline</td></tr>" . |
| 530 | "</table><BR></tt></font><hr>"; |
| 531 | |
| 1c72b151 |
532 | $data = sqimap_run_command ($imap_stream, "FETCH $passed_id BODY[]", true, $response, $message); |
| 451f74a2 |
533 | array_shift($data); |
| 534 | $wholemessage = implode('', $data); |
| a019eeb8 |
535 | |
| 346817d4 |
536 | $ret = $wholemessage; |
| a3daaaf3 |
537 | } |
| 451f74a2 |
538 | return( $ret ); |
| 539 | } |
| d4467150 |
540 | |
| 451f74a2 |
541 | function mime_print_body_lines ($imap_stream, $id, $ent_id, $encoding) { |
| 542 | // do a bit of error correction. If we couldn't find the entity id, just guess |
| 543 | // that it is the first one. That is usually the case anyway. |
| 544 | if (!$ent_id) { |
| 545 | $ent_id = 1; |
| 546 | } |
| 547 | $sid = sqimap_session_id(); |
| 548 | // Don't kill the connection if the browser is over a dialup |
| 549 | // and it would take over 30 seconds to download it. |
| b7206e1d |
550 | |
| 551 | // don´t call set_time_limit in safe mode. |
| 552 | if (!ini_get("safe_mode")) { |
| 553 | set_time_limit(0); |
| 554 | } |
| 346817d4 |
555 | |
| 451f74a2 |
556 | fputs ($imap_stream, "$sid FETCH $id BODY[$ent_id]\r\n"); |
| 557 | $cnt = 0; |
| 558 | $continue = true; |
| 559 | $read = fgets ($imap_stream,4096); |
| 560 | // This could be bad -- if the section has sqimap_session_id() . ' OK' |
| 561 | // or similar, it will kill the download. |
| 562 | while (!ereg("^".$sid." (OK|BAD|NO)(.*)$", $read, $regs)) { |
| 563 | if (trim($read) == ')==') { |
| 564 | $read1 = $read; |
| b74ba498 |
565 | $read = fgets ($imap_stream,4096); |
| 451f74a2 |
566 | if (ereg("^".$sid." (OK|BAD|NO)(.*)$", $read, $regs)) { |
| 567 | return; |
| 568 | } else { |
| 569 | echo decodeBody($read1, $encoding) . |
| 570 | decodeBody($read, $encoding); |
| 571 | } |
| 572 | } else if ($cnt) { |
| 573 | echo decodeBody($read, $encoding); |
| b74ba498 |
574 | } |
| 451f74a2 |
575 | $read = fgets ($imap_stream,4096); |
| 576 | $cnt++; |
| 577 | } |
| 578 | } |
| beb9e459 |
579 | |
| 451f74a2 |
580 | /* -[ END MIME DECODING ]----------------------------------------------------------- */ |
| d4467150 |
581 | |
| aceb0d5c |
582 | |
| d4467150 |
583 | |
| 451f74a2 |
584 | /* This is the first function called. It decides if this is a multipart |
| 585 | message or if it should be handled as a single entity |
| 586 | */ |
| 587 | function decodeMime ($imap_stream, &$header) { |
| 588 | global $username, $key, $imapServerAddress, $imapPort; |
| 589 | return mime_structure ($imap_stream, $header); |
| 590 | } |
| ea48eb25 |
591 | |
| 451f74a2 |
592 | // This is here for debugging purposese. It will print out a list |
| 593 | // of all the entity IDs that are in the $message object. |
| f0c4dc12 |
594 | |
| 451f74a2 |
595 | function listEntities ($message) { |
| 596 | if ($message) { |
| 597 | if ($message->header->entity_id) |
| 598 | echo "<tt>" . $message->header->entity_id . ' : ' . $message->header->type0 . '/' . $message->header->type1 . '<br>'; |
| 599 | for ($i = 0; $message->entities[$i]; $i++) { |
| 600 | $msg = listEntities($message->entities[$i], $ent_id); |
| 601 | if ($msg) |
| 602 | return $msg; |
| 603 | } |
| 604 | } |
| 605 | } |
| f0c4dc12 |
606 | |
| 451f74a2 |
607 | |
| 608 | /* returns a $message object for a particular entity id */ |
| 609 | function getEntity ($message, $ent_id) { |
| 610 | if ($message) { |
| c9d78ab4 |
611 | if ($message->header->entity_id == $ent_id && strlen($ent_id) == strlen($message->header->entity_id)) |
| 612 | { |
| 8beafbbc |
613 | return $message; |
| 451f74a2 |
614 | } else { |
| cd928157 |
615 | for ($i = 0; isset($message->entities[$i]); $i++) { |
| 451f74a2 |
616 | $msg = getEntity ($message->entities[$i], $ent_id); |
| 617 | if ($msg) { |
| 618 | return $msg; |
| c9d78ab4 |
619 | } |
| b1dadc61 |
620 | } |
| 451f74a2 |
621 | } |
| 622 | } |
| 623 | } |
| 8beafbbc |
624 | |
| 451f74a2 |
625 | /* |
| 626 | * figures out what entity to display and returns the $message object |
| 627 | * for that entity. |
| 628 | */ |
| a0eed05c |
629 | function findDisplayEntity ($msg, $textOnly = true, $entity = array() ) { |
| 451f74a2 |
630 | global $show_html_default; |
| 631 | |
| 93f92f03 |
632 | $found = false; |
| c9d78ab4 |
633 | if ($msg) { |
| 93f92f03 |
634 | $type = $msg->header->type0.'/'.$msg->header->type1; |
| 635 | if ( $type == 'multipart/alternative') { |
| a0eed05c |
636 | $msg = findAlternativeEntity($msg, $textOnly); |
| 93f92f03 |
637 | if (count($msg->entities) == 0) { |
| 638 | $entity[] = $msg->header->entity_id; |
| 639 | } else { |
| 640 | $found = true; |
| 008989da |
641 | $entity =findDisplayEntity($msg,$textOnly, $entity); |
| 93f92f03 |
642 | } |
| 643 | } else if ( $type == 'multipart/related') { |
| 008989da |
644 | $msgs = findRelatedEntity($msg); |
| 645 | for ($i = 0; $i < count($msgs); $i++) { |
| 646 | $msg = $msgs[$i]; |
| 647 | if (count($msg->entities) == 0) { |
| 648 | $entity[] = $msg->header->entity_id; |
| 649 | } else { |
| 650 | $found = true; |
| 651 | $entity =findDisplayEntity($msg,$textOnly, $entity); |
| 652 | } |
| 93f92f03 |
653 | } |
| 654 | } else if ( count($entity) == 0 && |
| c9d78ab4 |
655 | $msg->header->type0 == 'text' && |
| 656 | ( $msg->header->type1 == 'plain' || |
| 657 | $msg->header->type1 == 'html' ) && |
| 658 | isset($msg->header->entity_id) ) { |
| 93f92f03 |
659 | if (count($msg->entities) == 0) { |
| 660 | $entity[] = $msg->header->entity_id; |
| 661 | } |
| 662 | } |
| 663 | $i = 0; |
| 664 | while ( isset($msg->entities[$i]) && count($entity) == 0 && !$found ) { |
| 008989da |
665 | $entity = findDisplayEntity($msg->entities[$i], $textOnly, $entity); |
| 93f92f03 |
666 | $i++; |
| 667 | } |
| 668 | } |
| 669 | if ( !isset($entity[0]) ) { |
| 670 | $entity[]=""; |
| a3daaaf3 |
671 | } |
| 451f74a2 |
672 | return( $entity ); |
| 673 | } |
| b74ba498 |
674 | |
| 451f74a2 |
675 | /* Shows the HTML version */ |
| 676 | function findDisplayEntityHTML ($message) { |
| 8405ee35 |
677 | |
| 451f74a2 |
678 | if ( $message->header->type0 == 'text' && |
| 679 | $message->header->type1 == 'html' && |
| 680 | isset($message->header->entity_id)) { |
| 681 | return $message->header->entity_id; |
| 682 | } |
| 683 | for ($i = 0; isset($message->entities[$i]); $i ++) { |
| f0c4dc12 |
684 | if ( $message->header->type0 == 'message' && |
| 685 | $message->header->type1 == 'rfc822' && |
| 686 | isset($message->header->entity_id)) { |
| 687 | return 0; |
| 688 | } |
| 93f92f03 |
689 | |
| 451f74a2 |
690 | $entity = findDisplayEntityHTML($message->entities[$i]); |
| 691 | if ($entity != 0) { |
| 692 | return $entity; |
| 693 | } |
| 694 | } |
| c9d78ab4 |
695 | |
| 451f74a2 |
696 | return 0; |
| 697 | } |
| 698 | |
| a0eed05c |
699 | function findAlternativeEntity ($message, $textOnly) { |
| 93f92f03 |
700 | global $show_html_default; |
| 701 | /* if we are dealing with alternative parts then we choose the best |
| 702 | * viewable message supported by SM. |
| 703 | */ |
| a0eed05c |
704 | if ($show_html_default && !$textOnly) { |
| 93f92f03 |
705 | $alt_order = array ('text/plain','text/html'); |
| 706 | } else { |
| 707 | $alt_order = array ('text/plain'); |
| 708 | } |
| 709 | $best_view = 0; |
| 008989da |
710 | $ent_id = 0; |
| 93f92f03 |
711 | $k = 0; |
| 712 | for ($i = 0; $i < count($message->entities); $i ++) { |
| 713 | $type = $message->entities[$i]->header->type0.'/'.$message->entities[$i]->header->type1; |
| 714 | if ($type == 'multipart/related') { |
| 715 | $type = $message->entities[$i]->header->type; |
| 716 | } |
| 717 | for ($j = $k; $j < count($alt_order); $j++) { |
| 718 | if ($alt_order[$j] == $type && $j > $best_view) { |
| 719 | $best_view = $j; |
| 008989da |
720 | $ent_id = $i; |
| 93f92f03 |
721 | $k = $j; |
| 722 | } |
| 723 | } |
| 724 | } |
| 008989da |
725 | return $message->entities[$ent_id]; |
| 93f92f03 |
726 | } |
| 727 | |
| 728 | function findRelatedEntity ($message) { |
| 008989da |
729 | $msgs = array(); |
| 93f92f03 |
730 | for ($i = 0; $i < count($message->entities); $i ++) { |
| 731 | $type = $message->entities[$i]->header->type0.'/'.$message->entities[$i]->header->type1; |
| 732 | if ($message->header->type == $type) { |
| 008989da |
733 | $msgs[] = $message->entities[$i]; |
| 93f92f03 |
734 | } |
| 735 | } |
| 008989da |
736 | return $msgs; |
| 93f92f03 |
737 | } |
| 738 | |
| da4c66e8 |
739 | /* |
| 740 | * translateText |
| 741 | * Extracted from strings.php 23/03/2002 |
| 742 | */ |
| 743 | |
| 744 | function translateText(&$body, $wrap_at, $charset) { |
| 745 | global $where, $what; /* from searching */ |
| 746 | global $color; /* color theme */ |
| 747 | |
| 748 | require_once('../functions/url_parser.php'); |
| 749 | |
| 750 | $body_ary = explode("\n", $body); |
| 751 | $PriorQuotes = 0; |
| 752 | for ($i=0; $i < count($body_ary); $i++) { |
| 753 | $line = $body_ary[$i]; |
| 754 | if (strlen($line) - 2 >= $wrap_at) { |
| 755 | sqWordWrap($line, $wrap_at); |
| 756 | } |
| 757 | $line = charset_decode($charset, $line); |
| 758 | $line = str_replace("\t", ' ', $line); |
| 759 | |
| 760 | parseUrl ($line); |
| 761 | |
| 762 | $Quotes = 0; |
| 763 | $pos = 0; |
| 764 | $j = strlen( $line ); |
| 765 | |
| 766 | while ( $pos < $j ) { |
| 767 | if ($line[$pos] == ' ') { |
| 768 | $pos ++; |
| 769 | } else if (strpos($line, '>', $pos) === $pos) { |
| 770 | $pos += 4; |
| 771 | $Quotes ++; |
| 772 | } else { |
| 773 | break; |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | if ($Quotes > 1) { |
| 778 | if (! isset($color[14])) { |
| 779 | $color[14] = '#FF0000'; |
| 780 | } |
| 781 | $line = '<FONT COLOR="' . $color[14] . '">' . $line . '</FONT>'; |
| 782 | } elseif ($Quotes) { |
| 783 | if (! isset($color[13])) { |
| 784 | $color[13] = '#800000'; |
| 785 | } |
| 786 | $line = '<FONT COLOR="' . $color[13] . '">' . $line . '</FONT>'; |
| 787 | } |
| 788 | |
| 789 | $body_ary[$i] = $line; |
| 790 | } |
| 791 | $body = '<pre>' . implode("\n", $body_ary) . '</pre>'; |
| 792 | } |
| 793 | |
| c9d78ab4 |
794 | /* debugfunction for looping through entities and displaying correct entities */ |
| 795 | function listMyEntities ($message) { |
| 796 | |
| 797 | if ($message) { |
| 798 | if ($message->header->entity_id) { |
| 799 | echo "<tt>" . $message->header->entity_id . ' : ' . $message->header->type0 . '/' . $message->header->type1 . '<br>'; |
| 800 | } |
| 801 | if (!($message->header->type0 == 'message' && $message->header->type1 == 'rfc822')) { |
| 802 | if (isset($message->header->boundary) ) { |
| 803 | $ent_id = $message->header->entity_id; |
| 804 | $var = $message->header->boundary; |
| 805 | if ($var !='') |
| 806 | echo "<b>$ent_id boundary = $var</b><br>"; |
| 807 | } |
| 808 | if (isset($message->header->type) ) { |
| 809 | $var = $message->header->type; |
| 810 | if ($var !='') |
| 811 | echo "<b>$ent_id type = $var</b><br>"; |
| 812 | } |
| 813 | for ($i = 0; $message->entities[$i]; $i++) { |
| 814 | $msg = listMyEntities($message->entities[$i]); |
| 815 | } |
| 816 | |
| 817 | if ($msg ) return $msg; |
| 818 | } |
| 819 | } |
| 820 | |
| 821 | } |
| 822 | |
| 823 | |
| 824 | |
| 451f74a2 |
825 | /* This returns a parsed string called $body. That string can then |
| 826 | be displayed as the actual message in the HTML. It contains |
| 827 | everything needed, including HTML Tags, Attachments at the |
| 828 | bottom, etc. |
| 829 | */ |
| 93f92f03 |
830 | function formatBody($imap_stream, $message, $color, $wrap_at, $ent_num) { |
| 451f74a2 |
831 | // this if statement checks for the entity to show as the |
| 832 | // primary message. To add more of them, just put them in the |
| 833 | // order that is their priority. |
| 008989da |
834 | global $startMessage, $username, $key, $imapServerAddress, $imapPort, |
| d03c24f4 |
835 | $show_html_default, $has_unsafe_images, $view_unsafe_images, $sort; |
| 836 | |
| 837 | $has_unsafe_images = 0; |
| 7e235a1a |
838 | |
| 451f74a2 |
839 | $id = $message->header->id; |
| f0c4dc12 |
840 | |
| 451f74a2 |
841 | $urlmailbox = urlencode($message->header->mailbox); |
| 93f92f03 |
842 | |
| 451f74a2 |
843 | $body_message = getEntity($message, $ent_num); |
| 844 | if (($body_message->header->type0 == 'text') || |
| 845 | ($body_message->header->type0 == 'rfc822')) { |
| 93f92f03 |
846 | $body = mime_fetch_body ($imap_stream, $id, $ent_num); |
| 847 | |
| 451f74a2 |
848 | $body = decodeBody($body, $body_message->header->encoding); |
| 849 | $hookResults = do_hook("message_body", $body); |
| 850 | $body = $hookResults[1]; |
| 451f74a2 |
851 | // If there are other types that shouldn't be formatted, add |
| 852 | // them here |
| 853 | if ($body_message->header->type1 == 'html') { |
| 854 | if ( $show_html_default <> 1 ) { |
| a3daaaf3 |
855 | $body = strip_tags( $body ); |
| 856 | translateText($body, $wrap_at, $body_message->header->charset); |
| 857 | } else { |
| 93f92f03 |
858 | $body = magicHTML( $body, $id, $message ); |
| a3daaaf3 |
859 | } |
| 451f74a2 |
860 | } else { |
| 9eea179c |
861 | translateText($body, $wrap_at, $body_message->header->charset); |
| 451f74a2 |
862 | } |
| e5ea9327 |
863 | $body .= "<CENTER><SMALL><A HREF=\"../src/download.php?absolute_dl=true&passed_id=$id&passed_ent_id=$ent_num&mailbox=$urlmailbox&showHeaders=1\">". _("Download this as a file") ."</A></SMALL></CENTER><BR>"; |
| 7e235a1a |
864 | if ($has_unsafe_images) { |
| 865 | if ($view_unsafe_images) { |
| 3d1c7564 |
866 | $body .= "<CENTER><SMALL><A HREF=\"read_body.php?passed_id=$id&mailbox=$urlmailbox&sort=$sort&startMessage=$startMessage&show_more=0\">". _("Hide Unsafe Images") ."</A></SMALL></CENTER><BR>\n"; |
| d03c24f4 |
867 | } else { |
| 3d1c7564 |
868 | $body .= "<CENTER><SMALL><A HREF=\"read_body.php?passed_id=$id&mailbox=$urlmailbox&sort=$sort&startMessage=$startMessage&show_more=0&view_unsafe_images=1\">". _("View Unsafe Images") ."</A></SMALL></CENTER><BR>\n"; |
| d03c24f4 |
869 | } |
| 7e235a1a |
870 | } |
| 77b88425 |
871 | |
| 451f74a2 |
872 | /** Display the ATTACHMENTS: message if there's more than one part **/ |
| 164800ad |
873 | if (isset($message->entities[1])) { |
| e22815be |
874 | /* Header-type alternative means we choose the best one to display |
| 875 | so don't show the alternatives as attachment. Header-type related |
| 876 | means that the attachments are already part of the related message. |
| 877 | */ |
| 878 | if ($message->header->type1 !='related' && $message->header->type1 !='alternative') { |
| 879 | $body .= formatAttachments ($message, $ent_num, $message->header->mailbox, $id); |
| 880 | } |
| 451f74a2 |
881 | } |
| 451f74a2 |
882 | } else { |
| 883 | $body = formatAttachments ($message, -1, $message->header->mailbox, $id); |
| 884 | } |
| 885 | return ($body); |
| 886 | } |
| b74ba498 |
887 | |
| 451f74a2 |
888 | /* |
| 889 | * A recursive function that returns a list of attachments with links |
| 890 | * to where to download these attachments |
| 891 | */ |
| 77b88425 |
892 | function formatAttachments($message, $ent_id, $mailbox, $id) { |
| 893 | global $where, $what; |
| 894 | global $startMessage, $color; |
| 895 | static $ShownHTML = 0; |
| 451f74a2 |
896 | |
| 77b88425 |
897 | $body = ''; |
| 898 | if ($ShownHTML == 0) { |
| 451f74a2 |
899 | |
| 77b88425 |
900 | $ShownHTML = 1; |
| 451f74a2 |
901 | $body .= "<TABLE WIDTH=\"100%\" CELLSPACING=0 CELLPADDING=2 BORDER=0 BGCOLOR=\"$color[0]\"><TR>\n" . |
| 77b88425 |
902 | "<TH ALIGN=\"left\" BGCOLOR=\"$color[9]\"><B>\n" . |
| 903 | _("Attachments") . ':' . |
| 904 | "</B></TH></TR><TR><TD>\n" . |
| 905 | "<TABLE CELLSPACING=0 CELLPADDING=1 BORDER=0>\n" . |
| 906 | formatAttachments($message, $ent_id, $mailbox, $id) . |
| 907 | "</TABLE></TD></TR></TABLE>"; |
| 908 | |
| 909 | } else if ($message) { |
| f0c4dc12 |
910 | $header = $message->header; |
| 911 | $type0 = strtolower($header->type0); |
| 912 | $type1 = strtolower($header->type1); |
| 2d0476d6 |
913 | $name = ''; |
| 914 | if (isset($header->name)) { |
| 915 | $name = decodeHeader($header->name); |
| 916 | } |
| 1fbbe1d4 |
917 | if ($type0 =='message' && $type1 == 'rfc822') { |
| f0c4dc12 |
918 | |
| 919 | $filename = decodeHeader($message->header->filename); |
| 920 | if (trim($filename) == '') { |
| 921 | if (trim($name) == '') { |
| 922 | $display_filename = 'untitled-[' . $message->header->entity_id . ']' ; |
| 923 | } else { |
| 924 | $display_filename = $name; |
| 925 | $filename = $name; |
| 926 | } |
| 927 | } else { |
| 928 | $display_filename = $filename; |
| 929 | } |
| 930 | |
| 931 | $urlMailbox = urlencode($mailbox); |
| 932 | $ent = urlencode($message->header->entity_id); |
| 933 | |
| 934 | $DefaultLink = |
| 935 | "../src/download.php?startMessage=$startMessage&passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent"; |
| 936 | if ($where && $what) { |
| 937 | $DefaultLink .= '&where=' . urlencode($where) . '&what=' . urlencode($what); |
| 938 | } |
| 939 | $Links['download link']['text'] = _("download"); |
| 940 | $Links['download link']['href'] = |
| 941 | "../src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent"; |
| 942 | $ImageURL = ''; |
| 943 | |
| 944 | /* this executes the attachment hook with a specific MIME-type. |
| 945 | * if that doens't have results, it tries if there's a rule |
| 946 | * for a more generic type. */ |
| 947 | $HookResults = do_hook("attachment $type0/$type1", $Links, |
| 948 | $startMessage, $id, $urlMailbox, $ent, $DefaultLink, $display_filename, $where, $what); |
| 949 | if(count($HookResults[1]) <= 1) { |
| 950 | $HookResults = do_hook("attachment $type0/*", $Links, |
| 951 | $startMessage, $id, $urlMailbox, $ent, $DefaultLink, |
| 952 | $display_filename, $where, $what); |
| 953 | } |
| 954 | |
| 955 | $Links = $HookResults[1]; |
| 956 | $DefaultLink = $HookResults[6]; |
| 957 | |
| 958 | $body .= '<TR><TD> </TD><TD>' . |
| 959 | "<A HREF=\"$DefaultLink\">$display_filename</A> </TD>" . |
| 960 | '<TD><SMALL><b>' . show_readable_size($message->header->size) . |
| 961 | '</b> </small></TD>' . |
| 962 | "<TD><SMALL>[ $type0/$type1 ] </SMALL></TD>" . |
| 963 | '<TD><SMALL>'; |
| 964 | if ($message->header->description) { |
| 965 | $body .= '<b>' . htmlspecialchars(_($message->header->description)) . '</b>'; |
| 966 | } |
| 967 | $body .= '</SMALL></TD><TD><SMALL> '; |
| 968 | |
| 969 | |
| 970 | $SkipSpaces = 1; |
| 971 | foreach ($Links as $Val) { |
| 972 | if ($SkipSpaces) { |
| 973 | $SkipSpaces = 0; |
| 974 | } else { |
| 975 | $body .= ' | '; |
| 976 | } |
| 977 | $body .= '<a href="' . $Val['href'] . '">' . $Val['text'] . '</a>'; |
| 978 | } |
| 979 | |
| 980 | unset($Links); |
| 77b88425 |
981 | |
| f0c4dc12 |
982 | $body .= "</SMALL></TD></TR>\n"; |
| 983 | |
| 984 | return( $body ); |
| 985 | |
| 986 | } elseif (!$message->entities) { |
| 77b88425 |
987 | |
| 988 | $type0 = strtolower($message->header->type0); |
| 989 | $type1 = strtolower($message->header->type1); |
| 990 | $name = decodeHeader($message->header->name); |
| 991 | |
| 992 | if ($message->header->entity_id != $ent_id) { |
| 993 | $filename = decodeHeader($message->header->filename); |
| 994 | if (trim($filename) == '') { |
| 995 | if (trim($name) == '') { |
| 996 | if ( trim( $message->header->id ) == '' ) |
| 997 | $display_filename = 'untitled-[' . $message->header->entity_id . ']' ; |
| 998 | else |
| 999 | $display_filename = 'cid: ' . $message->header->id; |
| 1000 | // $display_filename = 'untitled-[' . $message->header->entity_id . ']' ; |
| 1001 | } else { |
| 1002 | $display_filename = $name; |
| 1003 | $filename = $name; |
| 1004 | } |
| 1005 | } else { |
| 1006 | $display_filename = $filename; |
| 1007 | } |
| 451f74a2 |
1008 | |
| 77b88425 |
1009 | $urlMailbox = urlencode($mailbox); |
| 1010 | $ent = urlencode($message->header->entity_id); |
| 451f74a2 |
1011 | |
| 77b88425 |
1012 | $DefaultLink = |
| e5ea9327 |
1013 | "../src/download.php?startMessage=$startMessage&passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent"; |
| 77b88425 |
1014 | if ($where && $what) { |
| ed268948 |
1015 | $DefaultLink = '&where='. urlencode($where).'&what='.urlencode($what); |
| 77b88425 |
1016 | } |
| 1017 | $Links['download link']['text'] = _("download"); |
| 1018 | $Links['download link']['href'] = |
| e5ea9327 |
1019 | "../src/download.php?absolute_dl=true&passed_id=$id&mailbox=$urlMailbox&passed_ent_id=$ent"; |
| 77b88425 |
1020 | $ImageURL = ''; |
| 1021 | |
| 1022 | /* this executes the attachment hook with a specific MIME-type. |
| 1023 | * if that doens't have results, it tries if there's a rule |
| 1024 | * for a more generic type. */ |
| 1025 | $HookResults = do_hook("attachment $type0/$type1", $Links, |
| 1026 | $startMessage, $id, $urlMailbox, $ent, $DefaultLink, |
| 1027 | $display_filename, $where, $what); |
| 1028 | if(count($HookResults[1]) <= 1) { |
| 1029 | $HookResults = do_hook("attachment $type0/*", $Links, |
| 1030 | $startMessage, $id, $urlMailbox, $ent, $DefaultLink, |
| 1031 | $display_filename, $where, $what); |
| 1032 | } |
| 451f74a2 |
1033 | |
| 77b88425 |
1034 | $Links = $HookResults[1]; |
| 1035 | $DefaultLink = $HookResults[6]; |
| 1036 | |
| 1037 | $body .= '<TR><TD> </TD><TD>' . |
| 1038 | "<A HREF=\"$DefaultLink\">$display_filename</A> </TD>" . |
| 1039 | '<TD><SMALL><b>' . show_readable_size($message->header->size) . |
| 1040 | '</b> </small></TD>' . |
| 1041 | "<TD><SMALL>[ $type0/$type1 ] </SMALL></TD>" . |
| 1042 | '<TD><SMALL>'; |
| 1043 | if ($message->header->description) { |
| 1044 | $body .= '<b>' . htmlspecialchars(_($message->header->description)) . '</b>'; |
| 1045 | } |
| 1046 | $body .= '</SMALL></TD><TD><SMALL> '; |
| b74ba498 |
1047 | |
| b74ba498 |
1048 | |
| 77b88425 |
1049 | $SkipSpaces = 1; |
| 1050 | foreach ($Links as $Val) { |
| 1051 | if ($SkipSpaces) { |
| 1052 | $SkipSpaces = 0; |
| 1053 | } else { |
| 1054 | $body .= ' | '; |
| 1055 | } |
| 1056 | $body .= '<a href="' . $Val['href'] . '">' . $Val['text'] . '</a>'; |
| 1057 | } |
| 1058 | |
| 1059 | unset($Links); |
| 1060 | |
| 1061 | $body .= "</SMALL></TD></TR>\n"; |
| 1062 | } |
| 1063 | } else { |
| 1064 | for ($i = 0; $i < count($message->entities); $i++) { |
| 1065 | $body .= formatAttachments($message->entities[$i], $ent_id, $mailbox, $id); |
| 1066 | } |
| 451f74a2 |
1067 | } |
| 77b88425 |
1068 | } |
| 1069 | return( $body ); |
| 451f74a2 |
1070 | } |
| b74ba498 |
1071 | |
| b74ba498 |
1072 | |
| 451f74a2 |
1073 | /** this function decodes the body depending on the encoding type. **/ |
| 1074 | function decodeBody($body, $encoding) { |
| 1075 | $body = str_replace("\r\n", "\n", $body); |
| 1076 | $encoding = strtolower($encoding); |
| b74ba498 |
1077 | |
| 451f74a2 |
1078 | global $show_html_default; |
| 4809f489 |
1079 | |
| 56c094f5 |
1080 | if ($encoding == 'quoted-printable' || |
| 1081 | $encoding == 'quoted_printable') { |
| 451f74a2 |
1082 | $body = quoted_printable_decode($body); |
| 4809f489 |
1083 | |
| 7831268e |
1084 | |
| 451f74a2 |
1085 | while (ereg("=\n", $body)) |
| 1086 | $body = ereg_replace ("=\n", "", $body); |
| 358f007e |
1087 | |
| 451f74a2 |
1088 | } else if ($encoding == 'base64') { |
| 1089 | $body = base64_decode($body); |
| 1090 | } |
| b74ba498 |
1091 | |
| 451f74a2 |
1092 | // All other encodings are returned raw. |
| 1093 | return $body; |
| 1094 | } |
| 1095 | |
| 1096 | /* |
| 1097 | * This functions decode strings that is encoded according to |
| 1098 | * RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text). |
| 79e07c7e |
1099 | * Patched by Christian Schmidt <christian@ostenfeld.dk> 23/03/2002 |
| 451f74a2 |
1100 | */ |
| 1101 | function decodeHeader ($string, $utfencode=true) { |
| 79e07c7e |
1102 | if (is_array($string)) { |
| 1103 | $string = implode("\n", $string); |
| 1104 | } |
| 1105 | $i = 0; |
| 1106 | while (preg_match('/^(.{' . $i . '})(.*)=\?([^?]*)\?(Q|B)\?([^?]*)\?=/Ui', |
| 1107 | $string, $res)) { |
| 1108 | $prefix = $res[1]; |
| 1109 | // Ignore white-space between consecutive encoded-words |
| 1110 | if (strspn($res[2], " \t") != strlen($res[2])) { |
| 1111 | $prefix .= $res[2]; |
| 1112 | } |
| 18aa168e |
1113 | |
| 79e07c7e |
1114 | if (ucfirst($res[4]) == 'B') { |
| 1115 | $replace = base64_decode($res[5]); |
| 1116 | } else { |
| 1117 | $replace = str_replace('_', ' ', $res[5]); |
| 1118 | $replace = preg_replace('/=([0-9a-f]{2})/ie', 'chr(hexdec("\1"))', |
| 1119 | $replace); |
| 1120 | /* Only encode into entities by default. Some places |
| 1121 | don't need the encoding, like the compose form. */ |
| 1122 | if ($utfencode) { |
| 1123 | $replace = charset_decode($res[3], $replace); |
| 1124 | } |
| 18aa168e |
1125 | } |
| 79e07c7e |
1126 | $string = $prefix . $replace . substr($string, strlen($res[0])); |
| 1127 | $i = strlen($prefix) + strlen($replace); |
| 18aa168e |
1128 | } |
| 79e07c7e |
1129 | return( $string ); |
| 451f74a2 |
1130 | } |
| 1131 | |
| 1132 | /* |
| 1133 | * Encode a string according to RFC 1522 for use in headers if it |
| 1134 | * contains 8-bit characters or anything that looks like it should |
| 1135 | * be encoded. |
| 1136 | */ |
| 1137 | function encodeHeader ($string) { |
| 1138 | global $default_charset; |
| 793cc001 |
1139 | |
| 451f74a2 |
1140 | // Encode only if the string contains 8-bit characters or =? |
| 1141 | $j = strlen( $string ); |
| 1142 | $l = strstr($string, '=?'); // Must be encoded ? |
| 1143 | $ret = ''; |
| 1144 | for( $i=0; $i < $j; ++$i) { |
| f7b3ba37 |
1145 | switch( $string{$i} ) { |
| 1146 | case '=': |
| b74ba498 |
1147 | $ret .= '=3D'; |
| 1148 | break; |
| 451f74a2 |
1149 | case '?': |
| b74ba498 |
1150 | $ret .= '=3F'; |
| 1151 | break; |
| 451f74a2 |
1152 | case '_': |
| b74ba498 |
1153 | $ret .= '=5F'; |
| 1154 | break; |
| 451f74a2 |
1155 | case ' ': |
| b74ba498 |
1156 | $ret .= '_'; |
| 1157 | break; |
| 451f74a2 |
1158 | default: |
| b74ba498 |
1159 | $k = ord( $string{$i} ); |
| 451f74a2 |
1160 | if ( $k > 126 ) { |
| b74ba498 |
1161 | $ret .= sprintf("=%02X", $k); |
| 1162 | $l = TRUE; |
| 1163 | } else |
| 1164 | $ret .= $string{$i}; |
| f7b3ba37 |
1165 | } |
| 451f74a2 |
1166 | } |
| 793cc001 |
1167 | |
| 451f74a2 |
1168 | if ( $l ) { |
| f7b3ba37 |
1169 | $string = "=?$default_charset?Q?$ret?="; |
| 451f74a2 |
1170 | } |
| 346817d4 |
1171 | |
| 451f74a2 |
1172 | return( $string ); |
| 1173 | } |
| b74ba498 |
1174 | |
| 691a2d25 |
1175 | /* This function trys to locate the entity_id of a specific mime element */ |
| 451f74a2 |
1176 | |
| 691a2d25 |
1177 | function find_ent_id( $id, $message ) { |
| 1178 | $ret = ''; |
| 1179 | for ($i=0; $ret == '' && $i < count($message->entities); $i++) { |
| 164800ad |
1180 | if (( $message->entities[$i]->header->type1 == 'alternative') || |
| 1181 | ( $message->entities[$i]->header->type1 == 'related') || |
| 1182 | ( $message->entities[$i]->header->type1 == 'mixed')) { |
| 1183 | $ret = find_ent_id( $id, $message->entities[$i] ); |
| 451f74a2 |
1184 | } else { |
| 691a2d25 |
1185 | if ( strcasecmp( $message->entities[$i]->header->id, $id ) == 0 ) |
| 1186 | $ret = $message->entities[$i]->header->entity_id; |
| a3daaaf3 |
1187 | } |
| 691a2d25 |
1188 | |
| 451f74a2 |
1189 | } |
| 691a2d25 |
1190 | return( $ret ); |
| 451f74a2 |
1191 | } |
| a3daaaf3 |
1192 | |
| 691a2d25 |
1193 | /** |
| 1194 | ** HTMLFILTER ROUTINES |
| 1195 | */ |
| 451f74a2 |
1196 | |
| 691a2d25 |
1197 | /** |
| 1198 | * This function returns the final tag out of the tag name, an array |
| 1199 | * of attributes, and the type of the tag. This function is called by |
| 1200 | * sq_sanitize internally. |
| 1201 | * |
| 1202 | * @param $tagname the name of the tag. |
| 1203 | * @param $attary the array of attributes and their values |
| 1204 | * @param $tagtype The type of the tag (see in comments). |
| 1205 | * @return a string with the final tag representation. |
| 1206 | */ |
| 1207 | function sq_tagprint($tagname, $attary, $tagtype){ |
| 1208 | $me = "sq_tagprint"; |
| 1209 | if ($tagtype == 2){ |
| 1210 | $fulltag = '</' . $tagname . '>'; |
| 1211 | } else { |
| 1212 | $fulltag = '<' . $tagname; |
| 1213 | if (is_array($attary) && sizeof($attary)){ |
| 1214 | $atts = Array(); |
| 1215 | while (list($attname, $attvalue) = each($attary)){ |
| 1216 | array_push($atts, "$attname=$attvalue"); |
| 1217 | } |
| 1218 | $fulltag .= ' ' . join(" ", $atts); |
| 1219 | } |
| 1220 | if ($tagtype == 3){ |
| 1221 | $fulltag .= " /"; |
| 1222 | } |
| 1223 | $fulltag .= ">"; |
| 451f74a2 |
1224 | } |
| 691a2d25 |
1225 | return $fulltag; |
| 451f74a2 |
1226 | } |
| a3daaaf3 |
1227 | |
| 691a2d25 |
1228 | /** |
| 1229 | * A small helper function to use with array_walk. Modifies a by-ref |
| 1230 | * value and makes it lowercase. |
| 1231 | * |
| 1232 | * @param $val a value passed by-ref. |
| 1233 | * @return void since it modifies a by-ref value. |
| 1234 | */ |
| 1235 | function sq_casenormalize(&$val){ |
| 1236 | $val = strtolower($val); |
| 1237 | } |
| 451f74a2 |
1238 | |
| 691a2d25 |
1239 | /** |
| 1240 | * This function skips any whitespace from the current position within |
| 1241 | * a string and to the next non-whitespace value. |
| 1242 | * |
| 1243 | * @param $body the string |
| 1244 | * @param $offset the offset within the string where we should start |
| 1245 | * looking for the next non-whitespace character. |
| 1246 | * @return the location within the $body where the next |
| 1247 | * non-whitespace char is located. |
| 1248 | */ |
| 1249 | function sq_skipspace($body, $offset){ |
| 1250 | $me = "sq_skipspace"; |
| 1251 | preg_match("/^(\s*)/s", substr($body, $offset), $matches); |
| 1252 | if (sizeof($matches{1})){ |
| 1253 | $count = strlen($matches{1}); |
| 1254 | $offset += $count; |
| 451f74a2 |
1255 | } |
| 691a2d25 |
1256 | return $offset; |
| 451f74a2 |
1257 | } |
| a3daaaf3 |
1258 | |
| 691a2d25 |
1259 | /** |
| 1260 | * This function looks for the next character within a string. It's |
| 1261 | * really just a glorified "strpos", except it catches if failures |
| 1262 | * nicely. |
| 1263 | * |
| 1264 | * @param $body The string to look for needle in. |
| 1265 | * @param $offset Start looking from this position. |
| 1266 | * @param $needle The character/string to look for. |
| 1267 | * @return location of the next occurance of the needle, or |
| 1268 | * strlen($body) if needle wasn't found. |
| 1269 | */ |
| 1270 | function sq_findnxstr($body, $offset, $needle){ |
| 1271 | $me = "sq_findnxstr"; |
| 1272 | $pos = strpos($body, $needle, $offset); |
| 1273 | if ($pos === FALSE){ |
| 1274 | $pos = strlen($body); |
| 451f74a2 |
1275 | } |
| 691a2d25 |
1276 | return $pos; |
| 451f74a2 |
1277 | } |
| a3daaaf3 |
1278 | |
| 691a2d25 |
1279 | /** |
| 1280 | * This function takes a PCRE-style regexp and tries to match it |
| 1281 | * within the string. |
| 1282 | * |
| 1283 | * @param $body The string to look for needle in. |
| 1284 | * @param $offset Start looking from here. |
| 1285 | * @param $reg A PCRE-style regex to match. |
| 1286 | * @return Returns a false if no matches found, or an array |
| 1287 | * with the following members: |
| 1288 | * - integer with the location of the match within $body |
| 1289 | * - string with whatever content between offset and the match |
| 1290 | * - string with whatever it is we matched |
| 1291 | */ |
| 1292 | function sq_findnxreg($body, $offset, $reg){ |
| 1293 | $me = "sq_findnxreg"; |
| 1294 | $matches = Array(); |
| 1295 | $retarr = Array(); |
| 1296 | preg_match("%^(.*?)($reg)%s", substr($body, $offset), $matches); |
| 1297 | if (!$matches{0}){ |
| 1298 | $retarr = false; |
| 1299 | } else { |
| 1300 | $retarr{0} = $offset + strlen($matches{1}); |
| 1301 | $retarr{1} = $matches{1}; |
| 1302 | $retarr{2} = $matches{2}; |
| 1303 | } |
| 1304 | return $retarr; |
| 1305 | } |
| a3daaaf3 |
1306 | |
| 691a2d25 |
1307 | /** |
| 1308 | * This function looks for the next tag. |
| 1309 | * |
| 1310 | * @param $body String where to look for the next tag. |
| 1311 | * @param $offset Start looking from here. |
| 1312 | * @return false if no more tags exist in the body, or |
| 1313 | * an array with the following members: |
| 1314 | * - string with the name of the tag |
| 1315 | * - array with attributes and their values |
| 1316 | * - integer with tag type (1, 2, or 3) |
| 1317 | * - integer where the tag starts (starting "<") |
| 1318 | * - integer where the tag ends (ending ">") |
| 1319 | * first three members will be false, if the tag is invalid. |
| 1320 | */ |
| 1321 | function sq_getnxtag($body, $offset){ |
| 1322 | $me = "sq_getnxtag"; |
| 1323 | if ($offset > strlen($body)){ |
| 1324 | return false; |
| 1325 | } |
| 1326 | $lt = sq_findnxstr($body, $offset, "<"); |
| 1327 | if ($lt == strlen($body)){ |
| 1328 | return false; |
| 1329 | } |
| 1330 | /** |
| 1331 | * We are here: |
| 1332 | * blah blah <tag attribute="value"> |
| 1333 | * \---------^ |
| 1334 | */ |
| 1335 | $pos = sq_skipspace($body, $lt+1); |
| 1336 | if ($pos >= strlen($body)){ |
| 1337 | return Array(false, false, false, $lt, strlen($body)); |
| 1338 | } |
| 1339 | /** |
| 1340 | * There are 3 kinds of tags: |
| 1341 | * 1. Opening tag, e.g.: |
| 1342 | * <a href="blah"> |
| 1343 | * 2. Closing tag, e.g.: |
| 1344 | * </a> |
| 1345 | * 3. XHTML-style content-less tag, e.g.: |
| 1346 | * <img src="blah"/> |
| 1347 | */ |
| 1348 | $tagtype = false; |
| 1349 | switch (substr($body, $pos, 1)){ |
| 1350 | case "/": |
| 1351 | $tagtype = 2; |
| 1352 | $pos++; |
| 1353 | break; |
| 1354 | case "!": |
| 1355 | /** |
| 1356 | * A comment or an SGML declaration. |
| 1357 | */ |
| 1358 | if (substr($body, $pos+1, 2) == "--"){ |
| bb8d0799 |
1359 | $gt = strpos($body, "-->", $pos); |
| 691a2d25 |
1360 | if ($gt === false){ |
| 1361 | $gt = strlen($body); |
| bb8d0799 |
1362 | } else { |
| 1363 | $gt += 2; |
| 1364 | } |
| 691a2d25 |
1365 | return Array(false, false, false, $lt, $gt); |
| 1366 | } else { |
| 1367 | $gt = sq_findnxstr($body, $pos, ">"); |
| 1368 | return Array(false, false, false, $lt, $gt); |
| 1369 | } |
| 1370 | break; |
| 1371 | default: |
| 1372 | /** |
| 1373 | * Assume tagtype 1 for now. If it's type 3, we'll switch values |
| 1374 | * later. |
| 1375 | */ |
| 1376 | $tagtype = 1; |
| 1377 | break; |
| 1378 | } |
| a3daaaf3 |
1379 | |
| 691a2d25 |
1380 | $tag_start = $pos; |
| 1381 | $tagname = ''; |
| 1382 | /** |
| 1383 | * Look for next [\W-_], which will indicate the end of the tag name. |
| 1384 | */ |
| 1385 | $regary = sq_findnxreg($body, $pos, "[^\w\-_]"); |
| 1386 | if ($regary == false){ |
| 1387 | return Array(false, false, false, $lt, strlen($body)); |
| 1388 | } |
| 1389 | list($pos, $tagname, $match) = $regary; |
| 1390 | $tagname = strtolower($tagname); |
| 1391 | |
| 1392 | /** |
| 1393 | * $match can be either of these: |
| 1394 | * '>' indicating the end of the tag entirely. |
| 1395 | * '\s' indicating the end of the tag name. |
| 1396 | * '/' indicating that this is type-3 xhtml tag. |
| 1397 | * |
| 1398 | * Whatever else we find there indicates an invalid tag. |
| 1399 | */ |
| 1400 | switch ($match){ |
| 1401 | case "/": |
| 1402 | /** |
| 1403 | * This is an xhtml-style tag with a closing / at the |
| 1404 | * end, like so: <img src="blah"/>. Check if it's followed |
| 1405 | * by the closing bracket. If not, then this tag is invalid |
| 1406 | */ |
| 1407 | if (substr($body, $pos, 2) == "/>"){ |
| 1408 | $pos++; |
| 1409 | $tagtype = 3; |
| 1410 | } else { |
| 1411 | $gt = sq_findnxstr($body, $pos, ">"); |
| 1412 | $retary = Array(false, false, false, $lt, $gt); |
| 1413 | return $retary; |
| 1414 | } |
| 1415 | case ">": |
| 1416 | return Array($tagname, false, $tagtype, $lt, $pos); |
| 1417 | break; |
| 1418 | default: |
| 1419 | /** |
| 1420 | * Check if it's whitespace |
| 1421 | */ |
| 1422 | if (preg_match("/\s/", $match)){ |
| 1423 | } else { |
| 1424 | /** |
| 1425 | * This is an invalid tag! Look for the next closing ">". |
| 1426 | */ |
| 1427 | $gt = sq_findnxstr($body, $offset, ">"); |
| 1428 | return Array(false, false, false, $lt, $gt); |
| 1429 | } |
| 1430 | } |
| 1431 | |
| 1432 | /** |
| 1433 | * At this point we're here: |
| 1434 | * <tagname attribute='blah'> |
| 1435 | * \-------^ |
| 1436 | * |
| 1437 | * At this point we loop in order to find all attributes. |
| 1438 | */ |
| 1439 | $attname = ''; |
| 1440 | $atttype = false; |
| 1441 | $attary = Array(); |
| 1442 | |
| 1443 | while ($pos <= strlen($body)){ |
| 1444 | $pos = sq_skipspace($body, $pos); |
| 1445 | if ($pos == strlen($body)){ |
| 1446 | /** |
| 1447 | * Non-closed tag. |
| 1448 | */ |
| 1449 | return Array(false, false, false, $lt, $pos); |
| 1450 | } |
| 1451 | /** |
| 1452 | * See if we arrived at a ">" or "/>", which means that we reached |
| 1453 | * the end of the tag. |
| 1454 | */ |
| 1455 | $matches = Array(); |
| 164800ad |
1456 | if (preg_match("%^(\s*)(>|/>)%s", substr($body, $pos), $matches)) { |
| c828931c |
1457 | /** |
| 1458 | * Yep. So we did. |
| 1459 | */ |
| 1460 | $pos += strlen($matches{1}); |
| 1461 | if ($matches{2} == "/>"){ |
| 1462 | $tagtype = 3; |
| 1463 | $pos++; |
| 1464 | } |
| 1465 | return Array($tagname, $attary, $tagtype, $lt, $pos); |
| 1466 | } |
| a3daaaf3 |
1467 | |
| cca46357 |
1468 | /** |
| 691a2d25 |
1469 | * There are several types of attributes, with optional |
| 1470 | * [:space:] between members. |
| 1471 | * Type 1: |
| 1472 | * attrname[:space:]=[:space:]'CDATA' |
| 1473 | * Type 2: |
| 1474 | * attrname[:space:]=[:space:]"CDATA" |
| 1475 | * Type 3: |
| 1476 | * attr[:space:]=[:space:]CDATA |
| 1477 | * Type 4: |
| 1478 | * attrname |
| cca46357 |
1479 | * |
| 691a2d25 |
1480 | * We leave types 1 and 2 the same, type 3 we check for |
| 1481 | * '"' and convert to """ if needed, then wrap in |
| 1482 | * double quotes. Type 4 we convert into: |
| 1483 | * attrname="yes". |
| cca46357 |
1484 | */ |
| 691a2d25 |
1485 | $regary = sq_findnxreg($body, $pos, "[^\w\-_]"); |
| 1486 | if ($regary == false){ |
| 1487 | /** |
| 1488 | * Looks like body ended before the end of tag. |
| 1489 | */ |
| 1490 | return Array(false, false, false, $lt, strlen($body)); |
| cca46357 |
1491 | } |
| 691a2d25 |
1492 | list($pos, $attname, $match) = $regary; |
| 1493 | $attname = strtolower($attname); |
| 1494 | /** |
| 1495 | * We arrived at the end of attribute name. Several things possible |
| 1496 | * here: |
| 1497 | * '>' means the end of the tag and this is attribute type 4 |
| 1498 | * '/' if followed by '>' means the same thing as above |
| 1499 | * '\s' means a lot of things -- look what it's followed by. |
| 1500 | * anything else means the attribute is invalid. |
| 1501 | */ |
| 1502 | switch($match){ |
| 1503 | case "/": |
| 1504 | /** |
| 1505 | * This is an xhtml-style tag with a closing / at the |
| 1506 | * end, like so: <img src="blah"/>. Check if it's followed |
| 1507 | * by the closing bracket. If not, then this tag is invalid |
| 1508 | */ |
| 1509 | if (substr($body, $pos, 2) == "/>"){ |
| 1510 | $pos++; |
| 1511 | $tagtype = 3; |
| 1512 | } else { |
| 50ab7972 |
1513 | $gt = sq_findnxstr($body, $pos, ">"); |
| 691a2d25 |
1514 | $retary = Array(false, false, false, $lt, $gt); |
| 1515 | return $retary; |
| 451f74a2 |
1516 | } |
| 691a2d25 |
1517 | case ">": |
| 1518 | $attary{$attname} = '"yes"'; |
| 1519 | return Array($tagname, $attary, $tagtype, $lt, $pos); |
| 1520 | break; |
| 1521 | default: |
| 1522 | /** |
| 1523 | * Skip whitespace and see what we arrive at. |
| 1524 | */ |
| 1525 | $pos = sq_skipspace($body, $pos); |
| 1526 | $char = substr($body, $pos, 1); |
| 1527 | /** |
| 1528 | * Two things are valid here: |
| 1529 | * '=' means this is attribute type 1 2 or 3. |
| 1530 | * \w means this was attribute type 4. |
| 1531 | * anything else we ignore and re-loop. End of tag and |
| 1532 | * invalid stuff will be caught by our checks at the beginning |
| 1533 | * of the loop. |
| 1534 | */ |
| 1535 | if ($char == "="){ |
| 1536 | $pos++; |
| 1537 | $pos = sq_skipspace($body, $pos); |
| 1538 | /** |
| 1539 | * Here are 3 possibilities: |
| 1540 | * "'" attribute type 1 |
| 1541 | * '"' attribute type 2 |
| 1542 | * everything else is the content of tag type 3 |
| 1543 | */ |
| 1544 | $quot = substr($body, $pos, 1); |
| 1545 | if ($quot == "'"){ |
| 1546 | $regary = sq_findnxreg($body, $pos+1, "\'"); |
| 1547 | if ($regary == false){ |
| 1548 | return Array(false, false, false, $lt, strlen($body)); |
| 1549 | } |
| 1550 | list($pos, $attval, $match) = $regary; |
| 1551 | $pos++; |
| 1552 | $attary{$attname} = "'" . $attval . "'"; |
| 1553 | } else if ($quot == '"'){ |
| 1554 | $regary = sq_findnxreg($body, $pos+1, '\"'); |
| 1555 | if ($regary == false){ |
| 1556 | return Array(false, false, false, $lt, strlen($body)); |
| 1557 | } |
| 1558 | list($pos, $attval, $match) = $regary; |
| 1559 | $pos++; |
| 1560 | $attary{$attname} = '"' . $attval . '"'; |
| 1561 | } else { |
| 1562 | /** |
| 1563 | * These are hateful. Look for \s, or >. |
| 1564 | */ |
| 1565 | $regary = sq_findnxreg($body, $pos, "[\s>]"); |
| 1566 | if ($regary == false){ |
| 1567 | return Array(false, false, false, $lt, strlen($body)); |
| 7e235a1a |
1568 | } |
| 691a2d25 |
1569 | list($pos, $attval, $match) = $regary; |
| 1570 | /** |
| 1571 | * If it's ">" it will be caught at the top. |
| 1572 | */ |
| 1573 | $attval = preg_replace("/\"/s", """, $attval); |
| 1574 | $attary{$attname} = '"' . $attval . '"'; |
| 451f74a2 |
1575 | } |
| 691a2d25 |
1576 | } else if (preg_match("|[\w/>]|", $char)) { |
| 1577 | /** |
| 1578 | * That was attribute type 4. |
| 1579 | */ |
| 1580 | $attary{$attname} = '"yes"'; |
| 451f74a2 |
1581 | } else { |
| 691a2d25 |
1582 | /** |
| 1583 | * An illegal character. Find next '>' and return. |
| 1584 | */ |
| 1585 | $gt = sq_findnxstr($body, $pos, ">"); |
| 1586 | return Array(false, false, false, $lt, $gt); |
| 451f74a2 |
1587 | } |
| 691a2d25 |
1588 | } |
| 1589 | } |
| 1590 | /** |
| 1591 | * The fact that we got here indicates that the tag end was never |
| 1592 | * found. Return invalid tag indication so it gets stripped. |
| 1593 | */ |
| 1594 | return Array(false, false, false, $lt, strlen($body)); |
| 1595 | } |
| 1596 | |
| 1597 | /** |
| 1598 | * This function checks attribute values for entity-encoded values |
| 1599 | * and returns them translated into 8-bit strings so we can run |
| 1600 | * checks on them. |
| 1601 | * |
| 1602 | * @param $attvalue A string to run entity check against. |
| 1603 | * @return Translated value. |
| 1604 | */ |
| 1605 | function sq_deent($attvalue){ |
| 1606 | $me="sq_deent"; |
| 1607 | /** |
| 1608 | * See if we have to run the checks first. All entities must start |
| 1609 | * with "&". |
| 1610 | */ |
| 1611 | if (strpos($attvalue, "&") === false){ |
| 1612 | return $attvalue; |
| 1613 | } |
| 1614 | /** |
| 1615 | * Check named entities first. |
| 1616 | */ |
| 1617 | $trans = get_html_translation_table(HTML_ENTITIES); |
| 1618 | /** |
| 1619 | * Leave " in, as it can mess us up. |
| 1620 | */ |
| 1621 | $trans = array_flip($trans); |
| 1622 | unset($trans{"""}); |
| 1623 | while (list($ent, $val) = each($trans)){ |
| 1624 | $attvalue = preg_replace("/$ent*(\W)/si", "$val\\1", $attvalue); |
| 1625 | } |
| 1626 | /** |
| 1627 | * Now translate numbered entities from 1 to 255 if needed. |
| 1628 | */ |
| 1629 | if (strpos($attvalue, "#") !== false){ |
| 1630 | $omit = Array(34, 39); |
| 1631 | for ($asc=1; $asc<256; $asc++){ |
| 1632 | if (!in_array($asc, $omit)){ |
| 1633 | $chr = chr($asc); |
| 1634 | $attvalue = preg_replace("/\�*$asc;*(\D)/si", "$chr\\1", |
| 1635 | $attvalue); |
| 1636 | $attvalue = preg_replace("/\�*".dechex($asc).";*(\W)/si", |
| 1637 | "$chr\\1", $attvalue); |
| a3daaaf3 |
1638 | } |
| 691a2d25 |
1639 | } |
| 1640 | } |
| 1641 | return $attvalue; |
| 1642 | } |
| 1643 | |
| 1644 | /** |
| 1645 | * This function runs various checks against the attributes. |
| 1646 | * |
| 1647 | * @param $tagname String with the name of the tag. |
| 1648 | * @param $attary Array with all tag attributes. |
| 1649 | * @param $rm_attnames See description for sq_sanitize |
| 1650 | * @param $bad_attvals See description for sq_sanitize |
| 1651 | * @param $add_attr_to_tag See description for sq_sanitize |
| 1652 | * @param $message message object |
| 1653 | * @param $id message id |
| 1654 | * @return Array with modified attributes. |
| 1655 | */ |
| 1656 | function sq_fixatts($tagname, |
| 1657 | $attary, |
| 1658 | $rm_attnames, |
| 1659 | $bad_attvals, |
| 1660 | $add_attr_to_tag, |
| 1661 | $message, |
| 1662 | $id |
| 1663 | ){ |
| 1664 | $me = "sq_fixatts"; |
| 1665 | while (list($attname, $attvalue) = each($attary)){ |
| 1666 | /** |
| 1667 | * See if this attribute should be removed. |
| 1668 | */ |
| 1669 | foreach ($rm_attnames as $matchtag=>$matchattrs){ |
| 1670 | if (preg_match($matchtag, $tagname)){ |
| 1671 | foreach ($matchattrs as $matchattr){ |
| 1672 | if (preg_match($matchattr, $attname)){ |
| 1673 | unset($attary{$attname}); |
| 1674 | continue; |
| 1675 | } |
| 451f74a2 |
1676 | } |
| 451f74a2 |
1677 | } |
| 691a2d25 |
1678 | } |
| 1679 | /** |
| 1680 | * Remove any entities. |
| 1681 | */ |
| 1682 | $attvalue = sq_deent($attvalue); |
| 1683 | |
| 1684 | /** |
| 1685 | * Now let's run checks on the attvalues. |
| 1686 | * I don't expect anyone to comprehend this. If you do, |
| 1687 | * get in touch with me so I can drive to where you live and |
| 1688 | * shake your hand personally. :) |
| 1689 | */ |
| 1690 | foreach ($bad_attvals as $matchtag=>$matchattrs){ |
| 1691 | if (preg_match($matchtag, $tagname)){ |
| 1692 | foreach ($matchattrs as $matchattr=>$valary){ |
| 1693 | if (preg_match($matchattr, $attname)){ |
| 1694 | /** |
| 1695 | * There are two arrays in valary. |
| 1696 | * First is matches. |
| 1697 | * Second one is replacements |
| 1698 | */ |
| 1699 | list($valmatch, $valrepl) = $valary; |
| 1700 | $newvalue = |
| 1701 | preg_replace($valmatch, $valrepl, $attvalue); |
| 1702 | if ($newvalue != $attvalue){ |
| 1703 | $attary{$attname} = $newvalue; |
| 1704 | } |
| 1705 | } |
| 1706 | } |
| 451f74a2 |
1707 | } |
| a3daaaf3 |
1708 | } |
| 691a2d25 |
1709 | /** |
| 1710 | * Turn cid: urls into http-friendly ones. |
| 1711 | */ |
| 1712 | if (preg_match("/^[\'\"]\s*cid:/si", $attvalue)){ |
| 1713 | $attary{$attname} = sq_cid2http($message, $id, $attvalue); |
| 1714 | } |
| a3daaaf3 |
1715 | } |
| 691a2d25 |
1716 | /** |
| 1717 | * See if we need to append any attributes to this tag. |
| 1718 | */ |
| 1719 | foreach ($add_attr_to_tag as $matchtag=>$addattary){ |
| 1720 | if (preg_match($matchtag, $tagname)){ |
| 1721 | $attary = array_merge($attary, $addattary); |
| 1722 | } |
| 1723 | } |
| 1724 | return $attary; |
| 451f74a2 |
1725 | } |
| a3daaaf3 |
1726 | |
| 691a2d25 |
1727 | /** |
| 1728 | * This function edits the style definition to make them friendly and |
| 1729 | * usable in squirrelmail. |
| 1730 | * |
| 1731 | * @param $message the message object |
| 1732 | * @param $id the message id |
| 1733 | * @param $content a string with whatever is between <style> and </style> |
| 1734 | * @return a string with edited content. |
| 1735 | */ |
| 1736 | function sq_fixstyle($message, $id, $content){ |
| 1737 | global $view_unsafe_images; |
| 1738 | $me = "sq_fixstyle"; |
| 1739 | /** |
| 1740 | * First look for general BODY style declaration, which would be |
| 1741 | * like so: |
| 1742 | * body {background: blah-blah} |
| 1743 | * and change it to .bodyclass so we can just assign it to a <div> |
| 1744 | */ |
| 1745 | $content = preg_replace("|body(\s*\{.*?\})|si", ".bodyclass\\1", $content); |
| 1746 | $secremoveimg = "../images/" . _("sec_remove_eng.png"); |
| 1747 | /** |
| 1748 | * Fix url('blah') declarations. |
| 1749 | */ |
| 1750 | $content = preg_replace("|url\(([\'\"])\s*\S+script\s*:.*?([\'\"])\)|si", |
| 1751 | "url(\\1$secremoveimg\\2)", $content); |
| 1752 | /** |
| 1753 | * Fix url('https*://.*) declarations but only if $view_unsafe_images |
| 1754 | * is false. |
| 1755 | */ |
| 1756 | if (!$view_unsafe_images){ |
| 1757 | $content = preg_replace("|url\(([\'\"])\s*https*:.*?([\'\"])\)|si", |
| 1758 | "url(\\1$secremoveimg\\2)", $content); |
| 1759 | } |
| 1760 | |
| 1761 | /** |
| 1762 | * Fix urls that refer to cid: |
| 1763 | */ |
| 1764 | while (preg_match("|url\(([\'\"]\s*cid:.*?[\'\"])\)|si", $content, |
| 1765 | $matches)){ |
| 1766 | $cidurl = $matches{1}; |
| 1767 | $httpurl = sq_cid2http($message, $id, $cidurl); |
| 1768 | $content = preg_replace("|url\($cidurl\)|si", |
| 1769 | "url($httpurl)", $content); |
| 1770 | } |
| a3daaaf3 |
1771 | |
| 691a2d25 |
1772 | /** |
| bb8d0799 |
1773 | * Fix stupid css declarations which lead to vulnerabilities |
| 691a2d25 |
1774 | * in IE. |
| 1775 | */ |
| bb8d0799 |
1776 | $match = Array('/expression/si', |
| 1777 | '/behaviou*r/si', |
| 1778 | '/binding/si'); |
| 1779 | $replace = Array('idiocy', 'idiocy', 'idiocy'); |
| 1780 | $content = preg_replace($match, $replace, $content); |
| 691a2d25 |
1781 | return $content; |
| 1782 | } |
| a3daaaf3 |
1783 | |
| 691a2d25 |
1784 | /** |
| 1785 | * This function converts cid: url's into the ones that can be viewed in |
| 1786 | * the browser. |
| 1787 | * |
| 1788 | * @param $message the message object |
| 1789 | * @param $id the message id |
| 1790 | * @param $cidurl the cid: url. |
| 1791 | * @return a string with a http-friendly url |
| 1792 | */ |
| 1793 | function sq_cid2http($message, $id, $cidurl){ |
| 1794 | /** |
| 1795 | * Get rid of quotes. |
| 1796 | */ |
| 1797 | $quotchar = substr($cidurl, 0, 1); |
| 1798 | $cidurl = str_replace($quotchar, "", $cidurl); |
| 1799 | $cidurl = substr(trim($cidurl), 4); |
| 1800 | $httpurl = $quotchar . "../src/download.php?absolute_dl=true&" . |
| 1801 | "passed_id=$id&mailbox=" . urlencode($message->header->mailbox) . |
| 1802 | "&passed_ent_id=" . find_ent_id($cidurl, $message) . $quotchar; |
| 1803 | return $httpurl; |
| 1804 | } |
| 1805 | |
| 1806 | /** |
| 1807 | * This function changes the <body> tag into a <div> tag since we |
| 1808 | * can't really have a body-within-body. |
| 1809 | * |
| 1810 | * @param $attary an array of attributes and values of <body> |
| 1811 | * @return a modified array of attributes to be set for <div> |
| 1812 | */ |
| 1813 | function sq_body2div($attary){ |
| 1814 | $me = "sq_body2div"; |
| 1815 | $divattary = Array("class"=>"'bodyclass'"); |
| 1816 | $bgcolor="#ffffff"; |
| 1817 | $text="#000000"; |
| 1818 | $styledef=""; |
| 1819 | if (is_array($attary) && sizeof($attary) > 0){ |
| 1820 | foreach ($attary as $attname=>$attvalue){ |
| 1821 | $quotchar = substr($attvalue, 0, 1); |
| 1822 | $attvalue = str_replace($quotchar, "", $attvalue); |
| 1823 | switch ($attname){ |
| 1824 | case "background": |
| 1825 | $styledef .= "background-image: url('$attvalue'); "; |
| 1826 | break; |
| 1827 | case "bgcolor": |
| 1828 | $styledef .= "background-color: $attvalue; "; |
| 1829 | break; |
| 1830 | case "text": |
| 1831 | $styledef .= "color: $attvalue; "; |
| 1832 | } |
| a3daaaf3 |
1833 | } |
| 691a2d25 |
1834 | if (strlen($styledef) > 0){ |
| 1835 | $divattary{"style"} = "\"$styledef\""; |
| 1836 | } |
| 1837 | } |
| 1838 | return $divattary; |
| 1839 | } |
| a3daaaf3 |
1840 | |
| 691a2d25 |
1841 | /** |
| 1842 | * This is the main function and the one you should actually be calling. |
| 1843 | * There are several variables you should be aware of an which need |
| 1844 | * special description. |
| 1845 | * |
| 1846 | * Since the description is quite lengthy, see it here: |
| 1847 | * http://www.mricon.com/html/phpfilter.html |
| 1848 | * |
| 1849 | * @param $body the string with HTML you wish to filter |
| 1850 | * @param $tag_list see description above |
| 1851 | * @param $rm_tags_with_content see description above |
| 1852 | * @param $self_closing_tags see description above |
| 1853 | * @param $force_tag_closing see description above |
| 1854 | * @param $rm_attnames see description above |
| 1855 | * @param $bad_attvals see description above |
| 1856 | * @param $add_attr_to_tag see description above |
| 1857 | * @param $message message object |
| 1858 | * @param $id message id |
| 1859 | * @return sanitized html safe to show on your pages. |
| 1860 | */ |
| 1861 | function sq_sanitize($body, |
| 1862 | $tag_list, |
| 1863 | $rm_tags_with_content, |
| 1864 | $self_closing_tags, |
| 1865 | $force_tag_closing, |
| 1866 | $rm_attnames, |
| 1867 | $bad_attvals, |
| 1868 | $add_attr_to_tag, |
| 1869 | $message, |
| 1870 | $id |
| 1871 | ){ |
| 1872 | $me = "sq_sanitize"; |
| 1873 | /** |
| 1874 | * Normalize rm_tags and rm_tags_with_content. |
| 1875 | */ |
| 1876 | @array_walk($rm_tags, 'sq_casenormalize'); |
| 1877 | @array_walk($rm_tags_with_content, 'sq_casenormalize'); |
| 1878 | @array_walk($self_closing_tags, 'sq_casenormalize'); |
| 1879 | /** |
| 1880 | * See if tag_list is of tags to remove or tags to allow. |
| 1881 | * false means remove these tags |
| 1882 | * true means allow these tags |
| 1883 | */ |
| 1884 | $rm_tags = array_shift($tag_list); |
| 1885 | $curpos = 0; |
| 1886 | $open_tags = Array(); |
| 1887 | $trusted = "<!-- begin sanitized html -->\n"; |
| 1888 | $skip_content = false; |
| bb8d0799 |
1889 | /** |
| 1890 | * Take care of netscape's stupid javascript entities like |
| 1891 | * &{alert('boo')}; |
| 1892 | */ |
| 1893 | $body = preg_replace("/&(\{.*?\};)/si", "&\\1", $body); |
| 691a2d25 |
1894 | |
| 1895 | while (($curtag=sq_getnxtag($body, $curpos)) != FALSE){ |
| 1896 | list($tagname, $attary, $tagtype, $lt, $gt) = $curtag; |
| 1897 | $free_content = substr($body, $curpos, $lt-$curpos); |
| 1898 | /** |
| 1899 | * Take care of <style> |
| 1900 | */ |
| 1901 | if ($tagname == "style" && $tagtype == 2){ |
| 1902 | /** |
| 1903 | * This is a closing </style>. Edit the |
| 1904 | * content before we apply it. |
| 1905 | */ |
| 1906 | $free_content = sq_fixstyle($message, $id, $free_content); |
| 691a2d25 |
1907 | } |
| 1908 | if ($skip_content == false){ |
| 1909 | $trusted .= $free_content; |
| 1910 | } else { |
| 1911 | } |
| 1912 | if ($tagname != FALSE){ |
| 1913 | if ($tagtype == 2){ |
| 1914 | if ($skip_content == $tagname){ |
| 1915 | /** |
| 1916 | * Got to the end of tag we needed to remove. |
| 1917 | */ |
| 1918 | $tagname = false; |
| 1919 | $skip_content = false; |
| 1920 | } else { |
| 1921 | if ($skip_content == false){ |
| c828931c |
1922 | if ($tagname == "body"){ |
| 1923 | $tagname = "div"; |
| 691a2d25 |
1924 | } else { |
| c828931c |
1925 | if (isset($open_tags{$tagname}) && |
| 1926 | $open_tags{$tagname} > 0){ |
| 1927 | $open_tags{$tagname}--; |
| 1928 | } else { |
| 1929 | $tagname = false; |
| 1930 | } |
| 691a2d25 |
1931 | } |
| 1932 | } else { |
| 1933 | } |
| 1934 | } |
| 1935 | } else { |
| 1936 | /** |
| 1937 | * $rm_tags_with_content |
| 1938 | */ |
| 1939 | if ($skip_content == false){ |
| 1940 | /** |
| 1941 | * See if this is a self-closing type and change |
| 1942 | * tagtype appropriately. |
| 1943 | */ |
| 1944 | if ($tagtype == 1 |
| 1945 | && in_array($tagname, $self_closing_tags)){ |
| 1946 | $tagtype=3; |
| 1947 | } |
| 1948 | /** |
| 1949 | * See if we should skip this tag and any content |
| 1950 | * inside it. |
| 1951 | */ |
| 1952 | if ($tagtype == 1 && |
| 1953 | in_array($tagname, $rm_tags_with_content)){ |
| 1954 | $skip_content = $tagname; |
| 1955 | } else { |
| 1956 | if (($rm_tags == false |
| 1957 | && in_array($tagname, $tag_list)) || |
| 1958 | ($rm_tags == true && |
| 1959 | !in_array($tagname, $tag_list))){ |
| 1960 | $tagname = false; |
| 1961 | } else { |
| 1962 | if ($tagtype == 1){ |
| 1963 | if (isset($open_tags{$tagname})){ |
| 1964 | $open_tags{$tagname}++; |
| 1965 | } else { |
| 1966 | $open_tags{$tagname}=1; |
| 1967 | } |
| 1968 | } |
| 1969 | /** |
| 1970 | * This is where we run other checks. |
| 1971 | */ |
| 1972 | if (is_array($attary) && sizeof($attary) > 0){ |
| 1973 | $attary = sq_fixatts($tagname, |
| 1974 | $attary, |
| 1975 | $rm_attnames, |
| 1976 | $bad_attvals, |
| 1977 | $add_attr_to_tag, |
| 1978 | $message, |
| 1979 | $id |
| 1980 | ); |
| 1981 | } |
| c828931c |
1982 | /** |
| 1983 | * Convert body into div. |
| 1984 | */ |
| 1985 | if ($tagname == "body"){ |
| 1986 | $tagname = "div"; |
| 1987 | $attary = sq_body2div($attary, $message, $id); |
| 1988 | } |
| 691a2d25 |
1989 | } |
| 1990 | } |
| 1991 | } else { |
| 1992 | } |
| 1993 | } |
| 1994 | if ($tagname != false && $skip_content == false){ |
| 1995 | $trusted .= sq_tagprint($tagname, $attary, $tagtype); |
| 1996 | } |
| 1997 | } else { |
| 1998 | } |
| 1999 | $curpos = $gt+1; |
| a3daaaf3 |
2000 | } |
| 691a2d25 |
2001 | $trusted .= substr($body, $curpos, strlen($body)-$curpos); |
| 2002 | if ($force_tag_closing == true){ |
| 2003 | foreach ($open_tags as $tagname=>$opentimes){ |
| 2004 | while ($opentimes > 0){ |
| 2005 | $trusted .= '</' . $tagname . '>'; |
| 2006 | $opentimes--; |
| 2007 | } |
| 2008 | } |
| 2009 | $trusted .= "\n"; |
| 2010 | } |
| 2011 | $trusted .= "<!-- end sanitized html -->\n"; |
| 2012 | return $trusted; |
| 2013 | } |
| 451f74a2 |
2014 | |
| 691a2d25 |
2015 | /** |
| 2016 | * This is a wrapper function to call html sanitizing routines. |
| 2017 | * |
| 2018 | * @param $body the body of the message |
| 2019 | * @param $id the id of the message |
| 2020 | * @return a string with html safe to display in the browser. |
| 2021 | */ |
| 0b331da5 |
2022 | function magicHTML($body, $id, $message){ |
| 691a2d25 |
2023 | global $attachment_common_show_images, $view_unsafe_images, |
| 794b2d0a |
2024 | $has_unsafe_images; |
| 691a2d25 |
2025 | /** |
| 2026 | * Don't display attached images in HTML mode. |
| 2027 | */ |
| 2028 | $attachment_common_show_images = false; |
| 2029 | $tag_list = Array( |
| 2030 | false, |
| 2031 | "object", |
| 2032 | "meta", |
| 2033 | "html", |
| 2034 | "head", |
| 2035 | "base" |
| 2036 | ); |
| 2037 | |
| 2038 | $rm_tags_with_content = Array( |
| 2039 | "script", |
| 2040 | "applet", |
| 2041 | "embed", |
| 2042 | "title" |
| 2043 | ); |
| 2044 | |
| 2045 | $self_closing_tags = Array( |
| 2046 | "img", |
| 2047 | "br", |
| 2048 | "hr", |
| 2049 | "input" |
| 2050 | ); |
| 2051 | |
| 2052 | $force_tag_closing = false; |
| 2053 | |
| 2054 | $rm_attnames = Array( |
| 2055 | "/.*/" => |
| 2056 | Array( |
| 2057 | "/target/si", |
| bb8d0799 |
2058 | "/^on.*/si", |
| 2059 | "/^dynsrc/si", |
| 2060 | "/^data.*/si" |
| 691a2d25 |
2061 | ) |
| 2062 | ); |
| 2063 | |
| 2064 | $secremoveimg = "../images/" . _("sec_remove_eng.png"); |
| 2065 | $bad_attvals = Array( |
| 2066 | "/.*/" => |
| 2067 | Array( |
| 0a6ec9b5 |
2068 | "/^src|background/i" => |
| 691a2d25 |
2069 | Array( |
| 2070 | Array( |
| 2071 | "|^([\'\"])\s*\.\./.*([\'\"])|si", |
| bb8d0799 |
2072 | "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si", |
| b6f2416e |
2073 | "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si", |
| 2074 | "/^([\'\"])\s*about\s*:.*([\'\"])/si" |
| 691a2d25 |
2075 | ), |
| 2076 | Array( |
| 2077 | "\\1$secremoveimg\\2", |
| bb8d0799 |
2078 | "\\1$secremoveimg\\2", |
| 2079 | "\\1$secremoveimg\\2", |
| 2080 | "\\1$secremoveimg\\2" |
| 691a2d25 |
2081 | ) |
| 2082 | ), |
| 0a6ec9b5 |
2083 | "/^href|action/i" => |
| 2084 | Array( |
| 2085 | Array( |
| 2086 | "|^([\'\"])\s*\.\./.*([\'\"])|si", |
| 2087 | "/^([\'\"])\s*\S+script\s*:.*([\'\"])/si", |
| 2088 | "/^([\'\"])\s*mocha\s*:*.*([\'\"])/si", |
| 2089 | "/^([\'\"])\s*about\s*:.*([\'\"])/si" |
| 2090 | ), |
| 2091 | Array( |
| 2092 | "\\1#\\2", |
| 2093 | "\\1#\\2", |
| 2094 | "\\1#\\2", |
| 2095 | "\\1#\\2" |
| 2096 | ) |
| 2097 | ), |
| 691a2d25 |
2098 | "/^style/si" => |
| 2099 | Array( |
| 2100 | Array( |
| bb8d0799 |
2101 | "/expression/si", |
| 2102 | "/binding/si", |
| 2103 | "/behaviou*r/si", |
| 691a2d25 |
2104 | "|url\(([\'\"])\s*\.\./.*([\'\"])\)|si", |
| 0a6ec9b5 |
2105 | "/url\(([\'\"])\s*\S+script\s*:.*([\'\"])\)/si", |
| 2106 | "/url\(([\'\"])\s*mocha\s*:.*([\'\"])\)/si", |
| 2107 | "/url\(([\'\"])\s*about\s*:.*([\'\"])\)/si" |
| 691a2d25 |
2108 | ), |
| 2109 | Array( |
| bb8d0799 |
2110 | "idiocy", |
| 2111 | "idiocy", |
| 2112 | "idiocy", |
| 0a6ec9b5 |
2113 | "url(\\1#\\2)", |
| 2114 | "url(\\1#\\2)", |
| 2115 | "url(\\1#\\2)", |
| 2116 | "url(\\1#\\2)" |
| 691a2d25 |
2117 | ) |
| 2118 | ) |
| 2119 | ) |
| 2120 | ); |
| 2121 | if (!$view_unsafe_images){ |
| 2122 | /** |
| 2123 | * Remove any references to http/https if view_unsafe_images set |
| 2124 | * to false. |
| 2125 | */ |
| 0a6ec9b5 |
2126 | array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[0], |
| 43d678b6 |
2127 | '/^([\'\"])\s*https*:.*([\'\"])/si'); |
| 0a6ec9b5 |
2128 | array_push($bad_attvals{'/.*/'}{'/^src|background/i'}[1], |
| 43d678b6 |
2129 | "\\1$secremoveimg\\2"); |
| 2130 | array_push($bad_attvals{'/.*/'}{'/^style/si'}[0], |
| 2131 | '/url\(([\'\"])\s*https*:.*([\'\"])\)/si'); |
| 2132 | array_push($bad_attvals{'/.*/'}{'/^style/si'}[1], |
| 2133 | "url(\\1$secremoveimg\\2)"); |
| 691a2d25 |
2134 | } |
| 451f74a2 |
2135 | |
| 691a2d25 |
2136 | $add_attr_to_tag = Array( |
| 2137 | "/^a$/si" => Array('target'=>'"_new"') |
| 2138 | ); |
| 2139 | $trusted = sq_sanitize($body, |
| 2140 | $tag_list, |
| 2141 | $rm_tags_with_content, |
| 2142 | $self_closing_tags, |
| 2143 | $force_tag_closing, |
| 2144 | $rm_attnames, |
| 2145 | $bad_attvals, |
| 2146 | $add_attr_to_tag, |
| 2147 | $message, |
| 2148 | $id |
| 2149 | ); |
| 2150 | if (preg_match("|$secremoveimg|si", $trusted)){ |
| 2151 | $has_unsafe_images = true; |
| 2152 | } |
| 2153 | return $trusted; |
| 451f74a2 |
2154 | } |
| 691a2d25 |
2155 | ?> |
projects / squirrelmail.git / blame