| 1 | <?php |
|---|
| 2 | |
|---|
| 3 | /* |
|---|
| 4 | +-----------------------------------------------------------------------+ |
|---|
| 5 | | program/include/rcube_message.php | |
|---|
| 6 | | | |
|---|
| 7 | | This file is part of the Roundcube Webmail client | |
|---|
| 8 | | Copyright (C) 2008-2010, Roundcube Dev. - Switzerland | |
|---|
| 9 | | Licensed under the GNU GPL | |
|---|
| 10 | | | |
|---|
| 11 | | PURPOSE: | |
|---|
| 12 | | Logical representation of a mail message with all its data | |
|---|
| 13 | | and related functions | |
|---|
| 14 | +-----------------------------------------------------------------------+ |
|---|
| 15 | | Author: Thomas Bruederli <roundcube@gmail.com> | |
|---|
| 16 | +-----------------------------------------------------------------------+ |
|---|
| 17 | |
|---|
| 18 | $Id$ |
|---|
| 19 | |
|---|
| 20 | */ |
|---|
| 21 | |
|---|
| 22 | |
|---|
| 23 | /** |
|---|
| 24 | * Logical representation of a mail message with all its data |
|---|
| 25 | * and related functions |
|---|
| 26 | * |
|---|
| 27 | * @package Mail |
|---|
| 28 | * @author Thomas Bruederli <roundcube@gmail.com> |
|---|
| 29 | */ |
|---|
| 30 | class rcube_message |
|---|
| 31 | { |
|---|
| 32 | /** |
|---|
| 33 | * Instace of rcmail. |
|---|
| 34 | * |
|---|
| 35 | * @var rcmail |
|---|
| 36 | */ |
|---|
| 37 | private $app; |
|---|
| 38 | |
|---|
| 39 | /** |
|---|
| 40 | * Instance of imap class |
|---|
| 41 | * |
|---|
| 42 | * @var rcube_imap |
|---|
| 43 | */ |
|---|
| 44 | private $imap; |
|---|
| 45 | private $opt = array(); |
|---|
| 46 | private $inline_parts = array(); |
|---|
| 47 | private $parse_alternative = false; |
|---|
| 48 | |
|---|
| 49 | public $uid = null; |
|---|
| 50 | public $headers; |
|---|
| 51 | public $structure; |
|---|
| 52 | public $parts = array(); |
|---|
| 53 | public $mime_parts = array(); |
|---|
| 54 | public $attachments = array(); |
|---|
| 55 | public $subject = ''; |
|---|
| 56 | public $sender = null; |
|---|
| 57 | public $is_safe = false; |
|---|
| 58 | |
|---|
| 59 | |
|---|
| 60 | /** |
|---|
| 61 | * __construct |
|---|
| 62 | * |
|---|
| 63 | * Provide a uid, and parse message structure. |
|---|
| 64 | * |
|---|
| 65 | * @param string $uid The message UID. |
|---|
| 66 | * |
|---|
| 67 | * @uses rcmail::get_instance() |
|---|
| 68 | * @uses rcube_imap::decode_mime_string() |
|---|
| 69 | * @uses self::set_safe() |
|---|
| 70 | * |
|---|
| 71 | * @see self::$app, self::$imap, self::$opt, self::$structure |
|---|
| 72 | */ |
|---|
| 73 | function __construct($uid) |
|---|
| 74 | { |
|---|
| 75 | $this->app = rcmail::get_instance(); |
|---|
| 76 | $this->imap = $this->app->imap; |
|---|
| 77 | $this->imap->get_all_headers = true; |
|---|
| 78 | |
|---|
| 79 | $this->uid = $uid; |
|---|
| 80 | $this->headers = $this->imap->get_headers($uid, NULL, true, true); |
|---|
| 81 | |
|---|
| 82 | if (!$this->headers) |
|---|
| 83 | return; |
|---|
| 84 | |
|---|
| 85 | $this->subject = rcube_imap::decode_mime_string( |
|---|
| 86 | $this->headers->subject, $this->headers->charset); |
|---|
| 87 | list(, $this->sender) = each($this->imap->decode_address_list($this->headers->from)); |
|---|
| 88 | |
|---|
| 89 | $this->set_safe((intval($_GET['_safe']) || $_SESSION['safe_messages'][$uid])); |
|---|
| 90 | $this->opt = array( |
|---|
| 91 | 'safe' => $this->is_safe, |
|---|
| 92 | 'prefer_html' => $this->app->config->get('prefer_html'), |
|---|
| 93 | 'get_url' => rcmail_url('get', array( |
|---|
| 94 | '_mbox' => $this->imap->get_mailbox_name(), '_uid' => $uid)) |
|---|
| 95 | ); |
|---|
| 96 | |
|---|
| 97 | if ($this->structure = $this->imap->get_structure($uid, $this->headers->body_structure)) { |
|---|
| 98 | $this->get_mime_numbers($this->structure); |
|---|
| 99 | $this->parse_structure($this->structure); |
|---|
| 100 | } |
|---|
| 101 | else { |
|---|
| 102 | $this->body = $this->imap->get_body($uid); |
|---|
| 103 | } |
|---|
| 104 | |
|---|
| 105 | // notify plugins and let them analyze this structured message object |
|---|
| 106 | $this->app->plugins->exec_hook('message_load', array('object' => $this)); |
|---|
| 107 | } |
|---|
| 108 | |
|---|
| 109 | |
|---|
| 110 | /** |
|---|
| 111 | * Return a (decoded) message header |
|---|
| 112 | * |
|---|
| 113 | * @param string $name Header name |
|---|
| 114 | * @param bool $row Don't mime-decode the value |
|---|
| 115 | * @return string Header value |
|---|
| 116 | */ |
|---|
| 117 | public function get_header($name, $raw = false) |
|---|
| 118 | { |
|---|
| 119 | if ($this->headers->$name) |
|---|
| 120 | $value = $this->headers->$name; |
|---|
| 121 | else if ($this->headers->others[$name]) |
|---|
| 122 | $value = $this->headers->others[$name]; |
|---|
| 123 | |
|---|
| 124 | return $raw ? $value : $this->imap->decode_header($value); |
|---|
| 125 | } |
|---|
| 126 | |
|---|
| 127 | |
|---|
| 128 | /** |
|---|
| 129 | * Set is_safe var and session data |
|---|
| 130 | * |
|---|
| 131 | * @param bool $safe enable/disable |
|---|
| 132 | */ |
|---|
| 133 | public function set_safe($safe = true) |
|---|
| 134 | { |
|---|
| 135 | $this->is_safe = $safe; |
|---|
| 136 | $_SESSION['safe_messages'][$this->uid] = $this->is_safe; |
|---|
| 137 | } |
|---|
| 138 | |
|---|
| 139 | |
|---|
| 140 | /** |
|---|
| 141 | * Compose a valid URL for getting a message part |
|---|
| 142 | * |
|---|
| 143 | * @param string $mime_id Part MIME-ID |
|---|
| 144 | * @return string URL or false if part does not exist |
|---|
| 145 | */ |
|---|
| 146 | public function get_part_url($mime_id) |
|---|
| 147 | { |
|---|
| 148 | if ($this->mime_parts[$mime_id]) |
|---|
| 149 | return $this->opt['get_url'] . '&_part=' . $mime_id; |
|---|
| 150 | else |
|---|
| 151 | return false; |
|---|
| 152 | } |
|---|
| 153 | |
|---|
| 154 | |
|---|
| 155 | /** |
|---|
| 156 | * Get content of a specific part of this message |
|---|
| 157 | * |
|---|
| 158 | * @param string $mime_id Part MIME-ID |
|---|
| 159 | * @param resource $fp File pointer to save the message part |
|---|
| 160 | * @return string Part content |
|---|
| 161 | */ |
|---|
| 162 | public function get_part_content($mime_id, $fp=NULL) |
|---|
| 163 | { |
|---|
| 164 | if ($part = $this->mime_parts[$mime_id]) { |
|---|
| 165 | // stored in message structure (winmail/inline-uuencode) |
|---|
| 166 | if ($part->encoding == 'stream') { |
|---|
| 167 | if ($fp) { |
|---|
| 168 | fwrite($fp, $part->body); |
|---|
| 169 | } |
|---|
| 170 | return $fp ? true : $part->body; |
|---|
| 171 | } |
|---|
| 172 | // get from IMAP |
|---|
| 173 | return $this->imap->get_message_part($this->uid, $mime_id, $part, NULL, $fp); |
|---|
| 174 | } else |
|---|
| 175 | return null; |
|---|
| 176 | } |
|---|
| 177 | |
|---|
| 178 | |
|---|
| 179 | /** |
|---|
| 180 | * Determine if the message contains a HTML part |
|---|
| 181 | * |
|---|
| 182 | * @return bool True if a HTML is available, False if not |
|---|
| 183 | */ |
|---|
| 184 | function has_html_part() |
|---|
| 185 | { |
|---|
| 186 | // check all message parts |
|---|
| 187 | foreach ($this->parts as $pid => $part) { |
|---|
| 188 | $mimetype = strtolower($part->ctype_primary . '/' . $part->ctype_secondary); |
|---|
| 189 | if ($mimetype == 'text/html') |
|---|
| 190 | return true; |
|---|
| 191 | } |
|---|
| 192 | |
|---|
| 193 | return false; |
|---|
| 194 | } |
|---|
| 195 | |
|---|
| 196 | |
|---|
| 197 | /** |
|---|
| 198 | * Return the first HTML part of this message |
|---|
| 199 | * |
|---|
| 200 | * @return string HTML message part content |
|---|
| 201 | */ |
|---|
| 202 | function first_html_part() |
|---|
| 203 | { |
|---|
| 204 | // check all message parts |
|---|
| 205 | foreach ($this->mime_parts as $mime_id => $part) { |
|---|
| 206 | $mimetype = strtolower($part->ctype_primary . '/' . $part->ctype_secondary); |
|---|
| 207 | if ($mimetype == 'text/html') { |
|---|
| 208 | return $this->imap->get_message_part($this->uid, $mime_id, $part); |
|---|
| 209 | } |
|---|
| 210 | } |
|---|
| 211 | } |
|---|
| 212 | |
|---|
| 213 | |
|---|
| 214 | /** |
|---|
| 215 | * Return the first text part of this message |
|---|
| 216 | * |
|---|
| 217 | * @param rcube_message_part $part Reference to the part if found |
|---|
| 218 | * @return string Plain text message/part content |
|---|
| 219 | */ |
|---|
| 220 | function first_text_part(&$part=null) |
|---|
| 221 | { |
|---|
| 222 | // no message structure, return complete body |
|---|
| 223 | if (empty($this->parts)) |
|---|
| 224 | return $this->body; |
|---|
| 225 | |
|---|
| 226 | // check all message parts |
|---|
| 227 | foreach ($this->mime_parts as $mime_id => $part) { |
|---|
| 228 | $mimetype = $part->ctype_primary . '/' . $part->ctype_secondary; |
|---|
| 229 | |
|---|
| 230 | if ($mimetype == 'text/plain') { |
|---|
| 231 | return $this->imap->get_message_part($this->uid, $mime_id, $part); |
|---|
| 232 | } |
|---|
| 233 | else if ($mimetype == 'text/html') { |
|---|
| 234 | $out = $this->imap->get_message_part($this->uid, $mime_id, $part); |
|---|
| 235 | |
|---|
| 236 | // remove special chars encoding |
|---|
| 237 | $trans = array_flip(get_html_translation_table(HTML_ENTITIES)); |
|---|
| 238 | $out = strtr($out, $trans); |
|---|
| 239 | |
|---|
| 240 | // create instance of html2text class |
|---|
| 241 | $txt = new html2text($out); |
|---|
| 242 | return $txt->get_text(); |
|---|
| 243 | } |
|---|
| 244 | } |
|---|
| 245 | |
|---|
| 246 | $part = null; |
|---|
| 247 | return null; |
|---|
| 248 | } |
|---|
| 249 | |
|---|
| 250 | |
|---|
| 251 | /** |
|---|
| 252 | * Raad the message structure returend by the IMAP server |
|---|
| 253 | * and build flat lists of content parts and attachments |
|---|
| 254 | * |
|---|
| 255 | * @param rcube_message_part $structure Message structure node |
|---|
| 256 | * @param bool $recursive True when called recursively |
|---|
| 257 | */ |
|---|
| 258 | private function parse_structure($structure, $recursive = false) |
|---|
| 259 | { |
|---|
| 260 | // real content-type of message/rfc822 part |
|---|
| 261 | if ($structure->mimetype == 'message/rfc822' && $structure->real_mimetype) |
|---|
| 262 | $mimetype = $structure->real_mimetype; |
|---|
| 263 | else |
|---|
| 264 | $mimetype = $structure->mimetype; |
|---|
| 265 | |
|---|
| 266 | // show message headers |
|---|
| 267 | if ($recursive && is_array($structure->headers) && isset($structure->headers['subject'])) { |
|---|
| 268 | $c = new stdClass; |
|---|
| 269 | $c->type = 'headers'; |
|---|
| 270 | $c->headers = &$structure->headers; |
|---|
| 271 | $this->parts[] = $c; |
|---|
| 272 | } |
|---|
| 273 | |
|---|
| 274 | // Allow plugins to handle message parts |
|---|
| 275 | $plugin = $this->app->plugins->exec_hook('message_part_structure', |
|---|
| 276 | array('object' => $this, 'structure' => $structure, |
|---|
| 277 | 'mimetype' => $mimetype, 'recursive' => $recursive)); |
|---|
| 278 | |
|---|
| 279 | if ($plugin['abort']) |
|---|
| 280 | return; |
|---|
| 281 | |
|---|
| 282 | $structure = $plugin['structure']; |
|---|
| 283 | list($message_ctype_primary, $message_ctype_secondary) = explode('/', $plugin['mimetype']); |
|---|
| 284 | |
|---|
| 285 | // print body if message doesn't have multiple parts |
|---|
| 286 | if ($message_ctype_primary == 'text' && !$recursive) { |
|---|
| 287 | $structure->type = 'content'; |
|---|
| 288 | $this->parts[] = &$structure; |
|---|
| 289 | |
|---|
| 290 | // Parse simple (plain text) message body |
|---|
| 291 | if ($message_ctype_secondary == 'plain') |
|---|
| 292 | foreach ((array)$this->uu_decode($structure) as $uupart) { |
|---|
| 293 | $this->mime_parts[$uupart->mime_id] = $uupart; |
|---|
| 294 | $this->attachments[] = $uupart; |
|---|
| 295 | } |
|---|
| 296 | } |
|---|
| 297 | // the same for pgp signed messages |
|---|
| 298 | else if ($mimetype == 'application/pgp' && !$recursive) { |
|---|
| 299 | $structure->type = 'content'; |
|---|
| 300 | $this->parts[] = &$structure; |
|---|
| 301 | } |
|---|
| 302 | // message contains alternative parts |
|---|
| 303 | else if ($mimetype == 'multipart/alternative' && is_array($structure->parts)) { |
|---|
| 304 | // get html/plaintext parts |
|---|
| 305 | $plain_part = $html_part = $print_part = $related_part = null; |
|---|
| 306 | |
|---|
| 307 | foreach ($structure->parts as $p => $sub_part) { |
|---|
| 308 | $sub_mimetype = $sub_part->mimetype; |
|---|
| 309 | |
|---|
| 310 | // check if sub part is |
|---|
| 311 | if ($sub_mimetype == 'text/plain') |
|---|
| 312 | $plain_part = $p; |
|---|
| 313 | else if ($sub_mimetype == 'text/html') |
|---|
| 314 | $html_part = $p; |
|---|
| 315 | else if ($sub_mimetype == 'text/enriched') |
|---|
| 316 | $enriched_part = $p; |
|---|
| 317 | else if (in_array($sub_mimetype, array('multipart/related', 'multipart/mixed', 'multipart/alternative'))) |
|---|
| 318 | $related_part = $p; |
|---|
| 319 | } |
|---|
| 320 | |
|---|
| 321 | // parse related part (alternative part could be in here) |
|---|
| 322 | if ($related_part !== null && !$this->parse_alternative) { |
|---|
| 323 | $this->parse_alternative = true; |
|---|
| 324 | $this->parse_structure($structure->parts[$related_part], true); |
|---|
| 325 | $this->parse_alternative = false; |
|---|
| 326 | |
|---|
| 327 | // if plain part was found, we should unset it if html is preferred |
|---|
| 328 | if ($this->opt['prefer_html'] && count($this->parts)) |
|---|
| 329 | $plain_part = null; |
|---|
| 330 | } |
|---|
| 331 | |
|---|
| 332 | // choose html/plain part to print |
|---|
| 333 | if ($html_part !== null && $this->opt['prefer_html']) { |
|---|
| 334 | $print_part = &$structure->parts[$html_part]; |
|---|
| 335 | } |
|---|
| 336 | else if ($enriched_part !== null) { |
|---|
| 337 | $print_part = &$structure->parts[$enriched_part]; |
|---|
| 338 | } |
|---|
| 339 | else if ($plain_part !== null) { |
|---|
| 340 | $print_part = &$structure->parts[$plain_part]; |
|---|
| 341 | } |
|---|
| 342 | |
|---|
| 343 | // add the right message body |
|---|
| 344 | if (is_object($print_part)) { |
|---|
| 345 | $print_part->type = 'content'; |
|---|
| 346 | $this->parts[] = $print_part; |
|---|
| 347 | } |
|---|
| 348 | // show plaintext warning |
|---|
| 349 | else if ($html_part !== null && empty($this->parts)) { |
|---|
| 350 | $c = new stdClass; |
|---|
| 351 | $c->type = 'content'; |
|---|
| 352 | $c->ctype_primary = 'text'; |
|---|
| 353 | $c->ctype_secondary = 'plain'; |
|---|
| 354 | $c->body = rcube_label('htmlmessage'); |
|---|
| 355 | |
|---|
| 356 | $this->parts[] = $c; |
|---|
| 357 | } |
|---|
| 358 | |
|---|
| 359 | // add html part as attachment |
|---|
| 360 | if ($html_part !== null && $structure->parts[$html_part] !== $print_part) { |
|---|
| 361 | $html_part = &$structure->parts[$html_part]; |
|---|
| 362 | $html_part->filename = rcube_label('htmlmessage'); |
|---|
| 363 | $html_part->mimetype = 'text/html'; |
|---|
| 364 | |
|---|
| 365 | $this->attachments[] = $html_part; |
|---|
| 366 | } |
|---|
| 367 | } |
|---|
| 368 | // this is an ecrypted message -> create a plaintext body with the according message |
|---|
| 369 | else if ($mimetype == 'multipart/encrypted') { |
|---|
| 370 | $p = new stdClass; |
|---|
| 371 | $p->type = 'content'; |
|---|
| 372 | $p->ctype_primary = 'text'; |
|---|
| 373 | $p->ctype_secondary = 'plain'; |
|---|
| 374 | $p->body = rcube_label('encryptedmessage'); |
|---|
| 375 | $p->size = strlen($p->body); |
|---|
| 376 | } |
|---|
| 377 | // message contains multiple parts |
|---|
| 378 | else if (is_array($structure->parts) && !empty($structure->parts)) { |
|---|
| 379 | // iterate over parts |
|---|
| 380 | for ($i=0; $i < count($structure->parts); $i++) { |
|---|
| 381 | $mail_part = &$structure->parts[$i]; |
|---|
| 382 | $primary_type = $mail_part->ctype_primary; |
|---|
| 383 | $secondary_type = $mail_part->ctype_secondary; |
|---|
| 384 | |
|---|
| 385 | // real content-type of message/rfc822 |
|---|
| 386 | if ($mail_part->real_mimetype) { |
|---|
| 387 | $part_orig_mimetype = $mail_part->mimetype; |
|---|
| 388 | $part_mimetype = $mail_part->real_mimetype; |
|---|
| 389 | list($primary_type, $secondary_type) = explode('/', $part_mimetype); |
|---|
| 390 | } |
|---|
| 391 | else |
|---|
| 392 | $part_mimetype = $mail_part->mimetype; |
|---|
| 393 | |
|---|
| 394 | // multipart/alternative |
|---|
| 395 | if ($primary_type == 'multipart') { |
|---|
| 396 | $this->parse_structure($mail_part, true); |
|---|
| 397 | |
|---|
| 398 | // list message/rfc822 as attachment as well (mostly .eml) |
|---|
| 399 | if ($part_orig_mimetype == 'message/rfc822' && !empty($mail_part->filename)) |
|---|
| 400 | $this->attachments[] = $mail_part; |
|---|
| 401 | } |
|---|
| 402 | // part text/[plain|html] or delivery status |
|---|
| 403 | else if ((($part_mimetype == 'text/plain' || $part_mimetype == 'text/html') && $mail_part->disposition != 'attachment') || |
|---|
| 404 | in_array($part_mimetype, array('message/delivery-status', 'text/rfc822-headers', 'message/disposition-notification')) |
|---|
| 405 | ) { |
|---|
| 406 | // Allow plugins to handle also this part |
|---|
| 407 | $plugin = $this->app->plugins->exec_hook('message_part_structure', |
|---|
| 408 | array('object' => $this, 'structure' => $mail_part, |
|---|
| 409 | 'mimetype' => $part_mimetype, 'recursive' => true)); |
|---|
| 410 | |
|---|
| 411 | if ($plugin['abort']) |
|---|
| 412 | continue; |
|---|
| 413 | |
|---|
| 414 | $mail_part = $plugin['structure']; |
|---|
| 415 | list($primary_type, $secondary_type) = explode('/', $plugin['mimetype']); |
|---|
| 416 | |
|---|
| 417 | // add text part if it matches the prefs |
|---|
| 418 | if (!$this->parse_alternative || |
|---|
| 419 | ($secondary_type == 'html' && $this->opt['prefer_html']) || |
|---|
| 420 | ($secondary_type == 'plain' && !$this->opt['prefer_html']) |
|---|
| 421 | ) { |
|---|
| 422 | $mail_part->type = 'content'; |
|---|
| 423 | $this->parts[] = $mail_part; |
|---|
| 424 | } |
|---|
| 425 | |
|---|
| 426 | // list as attachment as well |
|---|
| 427 | if (!empty($mail_part->filename)) |
|---|
| 428 | $this->attachments[] = $mail_part; |
|---|
| 429 | } |
|---|
| 430 | // part message/* |
|---|
| 431 | else if ($primary_type=='message') { |
|---|
| 432 | $this->parse_structure($mail_part, true); |
|---|
| 433 | |
|---|
| 434 | // list as attachment as well (mostly .eml) |
|---|
| 435 | if (!empty($mail_part->filename)) |
|---|
| 436 | $this->attachments[] = $mail_part; |
|---|
| 437 | } |
|---|
| 438 | // ignore "virtual" protocol parts |
|---|
| 439 | else if ($primary_type == 'protocol') { |
|---|
| 440 | continue; |
|---|
| 441 | } |
|---|
| 442 | // part is Microsoft Outlook TNEF (winmail.dat) |
|---|
| 443 | else if ($part_mimetype == 'application/ms-tnef') { |
|---|
| 444 | foreach ((array)$this->tnef_decode($mail_part) as $tpart) { |
|---|
| 445 | $this->mime_parts[$tpart->mime_id] = $tpart; |
|---|
| 446 | $this->attachments[] = $tpart; |
|---|
| 447 | } |
|---|
| 448 | } |
|---|
| 449 | // part is a file/attachment |
|---|
| 450 | else if (preg_match('/^(inline|attach)/', $mail_part->disposition) || |
|---|
| 451 | $mail_part->headers['content-id'] || (empty($mail_part->disposition) && $mail_part->filename) |
|---|
| 452 | ) { |
|---|
| 453 | // skip apple resource forks |
|---|
| 454 | if ($message_ctype_secondary == 'appledouble' && $secondary_type == 'applefile') |
|---|
| 455 | continue; |
|---|
| 456 | |
|---|
| 457 | // part belongs to a related message and is linked |
|---|
| 458 | if ($mimetype == 'multipart/related' |
|---|
| 459 | && ($mail_part->headers['content-id'] || $mail_part->headers['content-location'])) { |
|---|
| 460 | if ($mail_part->headers['content-id']) |
|---|
| 461 | $mail_part->content_id = preg_replace(array('/^</', '/>$/'), '', $mail_part->headers['content-id']); |
|---|
| 462 | if ($mail_part->headers['content-location']) |
|---|
| 463 | $mail_part->content_location = $mail_part->headers['content-base'] . $mail_part->headers['content-location']; |
|---|
| 464 | |
|---|
| 465 | $this->inline_parts[] = $mail_part; |
|---|
| 466 | } |
|---|
| 467 | // attachment encapsulated within message/rfc822 part needs further decoding (#1486743) |
|---|
| 468 | else if ($part_orig_mimetype == 'message/rfc822') { |
|---|
| 469 | $this->parse_structure($mail_part, true); |
|---|
| 470 | } |
|---|
| 471 | // is a regular attachment |
|---|
| 472 | else if (preg_match('!^[a-z0-9-.+_]+/[a-z0-9-.+_]+$!i', $part_mimetype)) { |
|---|
| 473 | if (!$mail_part->filename) |
|---|
| 474 | $mail_part->filename = 'Part '.$mail_part->mime_id; |
|---|
| 475 | $this->attachments[] = $mail_part; |
|---|
| 476 | } |
|---|
| 477 | } |
|---|
| 478 | } |
|---|
| 479 | |
|---|
| 480 | // if this was a related part try to resolve references |
|---|
| 481 | if ($mimetype == 'multipart/related' && sizeof($this->inline_parts)) { |
|---|
| 482 | $a_replaces = array(); |
|---|
| 483 | |
|---|
| 484 | foreach ($this->inline_parts as $inline_object) { |
|---|
| 485 | $part_url = $this->get_part_url($inline_object->mime_id); |
|---|
| 486 | if ($inline_object->content_id) |
|---|
| 487 | $a_replaces['cid:'.$inline_object->content_id] = $part_url; |
|---|
| 488 | if ($inline_object->content_location) |
|---|
| 489 | $a_replaces[$inline_object->content_location] = $part_url; |
|---|
| 490 | } |
|---|
| 491 | |
|---|
| 492 | // add replace array to each content part |
|---|
| 493 | // (will be applied later when part body is available) |
|---|
| 494 | foreach ($this->parts as $i => $part) { |
|---|
| 495 | if ($part->type == 'content') |
|---|
| 496 | $this->parts[$i]->replaces = $a_replaces; |
|---|
| 497 | } |
|---|
| 498 | } |
|---|
| 499 | } |
|---|
| 500 | // message is a single part non-text |
|---|
| 501 | else if ($structure->filename) { |
|---|
| 502 | $this->attachments[] = $structure; |
|---|
| 503 | } |
|---|
| 504 | // message is a single part non-text (without filename) |
|---|
| 505 | else if (preg_match('/application\//i', $mimetype)) { |
|---|
| 506 | $structure->filename = 'Part '.$structure->mime_id; |
|---|
| 507 | $this->attachments[] = $structure; |
|---|
| 508 | } |
|---|
| 509 | } |
|---|
| 510 | |
|---|
| 511 | |
|---|
| 512 | /** |
|---|
| 513 | * Fill aflat array with references to all parts, indexed by part numbers |
|---|
| 514 | * |
|---|
| 515 | * @param rcube_message_part $part Message body structure |
|---|
| 516 | */ |
|---|
| 517 | private function get_mime_numbers(&$part) |
|---|
| 518 | { |
|---|
| 519 | if (strlen($part->mime_id)) |
|---|
| 520 | $this->mime_parts[$part->mime_id] = &$part; |
|---|
| 521 | |
|---|
| 522 | if (is_array($part->parts)) |
|---|
| 523 | for ($i=0; $i<count($part->parts); $i++) |
|---|
| 524 | $this->get_mime_numbers($part->parts[$i]); |
|---|
| 525 | } |
|---|
| 526 | |
|---|
| 527 | |
|---|
| 528 | /** |
|---|
| 529 | * Decode a Microsoft Outlook TNEF part (winmail.dat) |
|---|
| 530 | * |
|---|
| 531 | * @param rcube_message_part $part Message part to decode |
|---|
| 532 | * @return array |
|---|
| 533 | */ |
|---|
| 534 | function tnef_decode(&$part) |
|---|
| 535 | { |
|---|
| 536 | // @TODO: attachment may be huge, hadle it via file |
|---|
| 537 | if (!isset($part->body)) |
|---|
| 538 | $part->body = $this->imap->get_message_part($this->uid, $part->mime_id, $part); |
|---|
| 539 | |
|---|
| 540 | $parts = array(); |
|---|
| 541 | $tnef = new tnef_decoder; |
|---|
| 542 | $tnef_arr = $tnef->decompress($part->body); |
|---|
| 543 | |
|---|
| 544 | foreach ($tnef_arr as $pid => $winatt) { |
|---|
| 545 | $tpart = new rcube_message_part; |
|---|
| 546 | |
|---|
| 547 | $tpart->filename = trim($winatt['name']); |
|---|
| 548 | $tpart->encoding = 'stream'; |
|---|
| 549 | $tpart->ctype_primary = trim(strtolower($winatt['type'])); |
|---|
| 550 | $tpart->ctype_secondary = trim(strtolower($winatt['subtype'])); |
|---|
| 551 | $tpart->mimetype = $tpart->ctype_primary . '/' . $tpart->ctype_secondary; |
|---|
| 552 | $tpart->mime_id = 'winmail.' . $part->mime_id . '.' . $pid; |
|---|
| 553 | $tpart->size = $winatt['size']; |
|---|
| 554 | $tpart->body = $winatt['stream']; |
|---|
| 555 | |
|---|
| 556 | $parts[] = $tpart; |
|---|
| 557 | unset($tnef_arr[$pid]); |
|---|
| 558 | } |
|---|
| 559 | |
|---|
| 560 | return $parts; |
|---|
| 561 | } |
|---|
| 562 | |
|---|
| 563 | |
|---|
| 564 | /** |
|---|
| 565 | * Parse message body for UUencoded attachments bodies |
|---|
| 566 | * |
|---|
| 567 | * @param rcube_message_part $part Message part to decode |
|---|
| 568 | * @return array |
|---|
| 569 | */ |
|---|
| 570 | function uu_decode(&$part) |
|---|
| 571 | { |
|---|
| 572 | // @TODO: messages may be huge, hadle body via file |
|---|
| 573 | if (!isset($part->body)) |
|---|
| 574 | $part->body = $this->imap->get_message_part($this->uid, $part->mime_id, $part); |
|---|
| 575 | |
|---|
| 576 | $parts = array(); |
|---|
| 577 | // FIXME: line length is max.65? |
|---|
| 578 | $uu_regexp = '/begin [0-7]{3,4} ([^\n]+)\n(([\x21-\x7E]{0,65}\n)+)`\nend/s'; |
|---|
| 579 | |
|---|
| 580 | if (preg_match_all($uu_regexp, $part->body, $matches, PREG_SET_ORDER)) { |
|---|
| 581 | // remove attachments bodies from the message body |
|---|
| 582 | $part->body = preg_replace($uu_regexp, '', $part->body); |
|---|
| 583 | // update message content-type |
|---|
| 584 | $part->ctype_primary = 'multipart'; |
|---|
| 585 | $part->ctype_secondary = 'mixed'; |
|---|
| 586 | $part->mimetype = $part->ctype_primary . '/' . $part->ctype_secondary; |
|---|
| 587 | |
|---|
| 588 | // add attachments to the structure |
|---|
| 589 | foreach ($matches as $pid => $att) { |
|---|
| 590 | $uupart = new rcube_message_part; |
|---|
| 591 | |
|---|
| 592 | $uupart->filename = trim($att[1]); |
|---|
| 593 | $uupart->encoding = 'stream'; |
|---|
| 594 | $uupart->body = convert_uudecode($att[2]); |
|---|
| 595 | $uupart->size = strlen($uupart->body); |
|---|
| 596 | $uupart->mime_id = 'uu.' . $part->mime_id . '.' . $pid; |
|---|
| 597 | |
|---|
| 598 | $ctype = rc_mime_content_type($uupart->body, $uupart->filename, 'application/octet-stream', true); |
|---|
| 599 | $uupart->mimetype = $ctype; |
|---|
| 600 | list($uupart->ctype_primary, $uupart->ctype_secondary) = explode('/', $ctype); |
|---|
| 601 | |
|---|
| 602 | $parts[] = $uupart; |
|---|
| 603 | unset($matches[$pid]); |
|---|
| 604 | } |
|---|
| 605 | } |
|---|
| 606 | |
|---|
| 607 | return $parts; |
|---|
| 608 | } |
|---|
| 609 | |
|---|
| 610 | |
|---|
| 611 | /** |
|---|
| 612 | * Interpret a format=flowed message body according to RFC 2646 |
|---|
| 613 | * |
|---|
| 614 | * @param string $text Raw body formatted as flowed text |
|---|
| 615 | * @return string Interpreted text with unwrapped lines and stuffed space removed |
|---|
| 616 | */ |
|---|
| 617 | public static function unfold_flowed($text) |
|---|
| 618 | { |
|---|
| 619 | $text = preg_split('/\r?\n/', $text); |
|---|
| 620 | $last = -1; |
|---|
| 621 | $q_level = 0; |
|---|
| 622 | |
|---|
| 623 | foreach ($text as $idx => $line) { |
|---|
| 624 | if ($line[0] == '>' && preg_match('/^(>+\s*)/', $line, $regs)) { |
|---|
| 625 | $q = strlen(str_replace(' ', '', $regs[0])); |
|---|
| 626 | $line = substr($line, strlen($regs[0])); |
|---|
| 627 | |
|---|
| 628 | if ($q == $q_level && $line |
|---|
| 629 | && isset($text[$last]) |
|---|
| 630 | && $text[$last][strlen($text[$last])-1] == ' ' |
|---|
| 631 | ) { |
|---|
| 632 | $text[$last] .= $line; |
|---|
| 633 | unset($text[$idx]); |
|---|
| 634 | } |
|---|
| 635 | else { |
|---|
| 636 | $last = $idx; |
|---|
| 637 | } |
|---|
| 638 | } |
|---|
| 639 | else { |
|---|
| 640 | $q = 0; |
|---|
| 641 | if ($line == '-- ') { |
|---|
| 642 | $last = $idx; |
|---|
| 643 | } |
|---|
| 644 | else { |
|---|
| 645 | // remove space-stuffing |
|---|
| 646 | $line = preg_replace('/^\s/', '', $line); |
|---|
| 647 | |
|---|
| 648 | if (isset($text[$last]) && $line |
|---|
| 649 | && $text[$last] != '-- ' |
|---|
| 650 | && $text[$last][strlen($text[$last])-1] == ' ' |
|---|
| 651 | ) { |
|---|
| 652 | $text[$last] .= $line; |
|---|
| 653 | unset($text[$idx]); |
|---|
| 654 | } |
|---|
| 655 | else { |
|---|
| 656 | $text[$idx] = $line; |
|---|
| 657 | $last = $idx; |
|---|
| 658 | } |
|---|
| 659 | } |
|---|
| 660 | } |
|---|
| 661 | $q_level = $q; |
|---|
| 662 | } |
|---|
| 663 | |
|---|
| 664 | return implode("\r\n", $text); |
|---|
| 665 | } |
|---|
| 666 | |
|---|
| 667 | |
|---|
| 668 | /** |
|---|
| 669 | * Wrap the given text to comply with RFC 2646 |
|---|
| 670 | * |
|---|
| 671 | * @param string $text Text to wrap |
|---|
| 672 | * @param int $length Length |
|---|
| 673 | * @return string Wrapped text |
|---|
| 674 | */ |
|---|
| 675 | public static function format_flowed($text, $length = 72) |
|---|
| 676 | { |
|---|
| 677 | $text = preg_split('/\r?\n/', $text); |
|---|
| 678 | |
|---|
| 679 | foreach ($text as $idx => $line) { |
|---|
| 680 | if ($line != '-- ') { |
|---|
| 681 | if ($line[0] == '>' && preg_match('/^(>+)/', $line, $regs)) { |
|---|
| 682 | $prefix = $regs[0]; |
|---|
| 683 | $level = strlen($prefix); |
|---|
| 684 | $line = rtrim(substr($line, $level)); |
|---|
| 685 | $line = $prefix . rc_wordwrap($line, $length - $level - 2, " \r\n$prefix "); |
|---|
| 686 | } |
|---|
| 687 | else if ($line) { |
|---|
| 688 | $line = ' ' . rc_wordwrap(rtrim($line), $length - 2, " \r\n "); |
|---|
| 689 | } |
|---|
| 690 | |
|---|
| 691 | $text[$idx] = $line; |
|---|
| 692 | } |
|---|
| 693 | } |
|---|
| 694 | |
|---|
| 695 | return implode("\r\n", $text); |
|---|
| 696 | } |
|---|
| 697 | |
|---|
| 698 | } |
|---|
