| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Deliver.class.php |
| 5 | * |
| 6 | * Copyright (c) 1999-2002 The SquirrelMail Project Team |
| 7 | * Licensed under the GNU GPL. For full terms see the file COPYING. |
| 8 | * |
| 9 | * This contains all the functions needed to send messages through |
| 10 | * a delivery backend. |
| 11 | * |
| 12 | * $Id$ |
| 13 | */ |
| 14 | |
| 15 | class Deliver { |
| 16 | |
| 17 | function mail($message, $stream=false) { |
| 18 | $rfc822_header = $message->rfc822_header; |
| 19 | if (count($message->entities)) { |
| 20 | $boundary = $this->mimeBoundary(); |
| 21 | $rfc822_header->content_type->properties['boundary']='"'.$boundary.'"'; |
| 22 | } else { |
| 23 | $boundary=''; |
| 24 | } |
| 25 | $raw_length = 0; |
| 26 | $reply_rfc822_header = (isset($message->reply_rfc822_header) |
| 27 | ? $message->reply_rfc822_header : ''); |
| 28 | $header = $this->prepareRFC822_Header($rfc822_header, $reply_rfc822_header, $raw_length); |
| 29 | |
| 30 | if ($stream) { |
| 31 | $this->preWriteToStream($header); |
| 32 | $this->writeToStream($stream, $header); |
| 33 | } |
| 34 | $this->writeBody($message, $stream, $raw_length, $boundary); |
| 35 | return $raw_length; |
| 36 | } |
| 37 | |
| 38 | function writeBody($message, $stream, &$length_raw, $boundary='') { |
| 39 | if ($boundary && !$message->rfc822_header) { |
| 40 | $s = '--'.$boundary."\r\n"; |
| 41 | $s .= $this->prepareMIME_Header($message, $boundary); |
| 42 | $length_raw += strlen($s); |
| 43 | if ($stream) { |
| 44 | $this->preWriteToStream($s); |
| 45 | $this->writeToStream($stream, $s); |
| 46 | } |
| 47 | } |
| 48 | $this->writeBodyPart($message, $stream, $length_raw); |
| 49 | $boundary_depth = substr_count($message->entity_id,'.'); |
| 50 | if ($boundary_depth) { |
| 51 | $boundary .= '_part'.$boundary_depth; |
| 52 | } |
| 53 | $last = false; |
| 54 | for ($i=0, $entCount=count($message->entities);$i<$entCount;$i++) { |
| 55 | $msg = $this->writeBody($message->entities[$i], $stream, $length_raw, $boundary); |
| 56 | if ($i == $entCount-1) $last = true; |
| 57 | } |
| 58 | if ($boundary && $last) { |
| 59 | $s = "--".$boundary."--\r\n\r\n"; |
| 60 | $length_raw += strlen($s); |
| 61 | if ($stream) { |
| 62 | $this->preWriteToStream($s); |
| 63 | $this->writeToStream($stream, $s); |
| 64 | } |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | function writeBodyPart($message, $stream, &$length) { |
| 69 | if ($message->mime_header) { |
| 70 | $type0 = $message->mime_header->type0; |
| 71 | } else { |
| 72 | $type0 = $message->rfc822_header->content_type->type0; |
| 73 | } |
| 74 | |
| 75 | $body_part_trailing = $last = ''; |
| 76 | switch ($type0) { |
| 77 | case 'text': |
| 78 | case 'message': |
| 79 | if ($message->body_part) { |
| 80 | $body_part = $message->body_part; |
| 81 | $length += $this->clean_crlf($body_part); |
| 82 | if ($stream) { |
| 83 | $this->preWriteToStream($body_part); |
| 84 | $this->writeToStream($stream, $body_part); |
| 85 | } |
| 86 | $last = $body_part; |
| 87 | } elseif ($message->att_local_name) { |
| 88 | $filename = $message->att_local_name; |
| 89 | $file = fopen ($filename, 'rb'); |
| 90 | while ($body_part = fgets($file, 4096)) { |
| 91 | $length += $this->clean_crlf($body_part); |
| 92 | if ($stream) { |
| 93 | $this->preWriteToStream($body_part); |
| 94 | $this->writeToStream($stream, $body_part); |
| 95 | } |
| 96 | $last = $body_part; |
| 97 | } |
| 98 | fclose($file); |
| 99 | } |
| 100 | break; |
| 101 | default: |
| 102 | if ($message->body_part) { |
| 103 | $body_part = $message->body_part; |
| 104 | $length += $this->clean_crlf($body_part); |
| 105 | if ($stream) { |
| 106 | $this->writeToStream($stream, $body_part); |
| 107 | } |
| 108 | } elseif ($message->att_local_name) { |
| 109 | $filename = $message->att_local_name; |
| 110 | $file = fopen ($filename, 'rb'); |
| 111 | $encoded = ''; |
| 112 | while ($tmp = fread($file, 570)) { |
| 113 | $body_part = chunk_split(base64_encode($tmp)); |
| 114 | $length += $this->clean_crlf($body_part); |
| 115 | if ($stream) { |
| 116 | $this->writeToStream($stream, $body_part); |
| 117 | } |
| 118 | } |
| 119 | fclose($file); |
| 120 | } |
| 121 | break; |
| 122 | } |
| 123 | $body_part_trailing = ''; |
| 124 | if ($last && substr($last,-1) != "\n") { |
| 125 | $body_part_trailing = "\r\n"; |
| 126 | } |
| 127 | if ($body_part_trailing) { |
| 128 | $length += strlen($body_part_trailing); |
| 129 | if ($stream) { |
| 130 | $this->preWriteToStream($body_part_trailing); |
| 131 | $this->writeToStream($stream, $body_part_trailing); |
| 132 | } |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | function clean_crlf(&$s) { |
| 137 | $s = str_replace("\r\n", "\n", $s); |
| 138 | $s = str_replace("\r", "\n", $s); |
| 139 | $s = str_replace("\n", "\r\n", $s); |
| 140 | return strlen($s); |
| 141 | } |
| 142 | |
| 143 | function preWriteToStream(&$s) { |
| 144 | } |
| 145 | |
| 146 | function writeToStream($stream, $data) { |
| 147 | fputs($stream, $data); |
| 148 | } |
| 149 | |
| 150 | function initStream($message, $length=0, $host='', $port='', $user='', $pass='') { |
| 151 | return $stream; |
| 152 | } |
| 153 | |
| 154 | function getBcc() { |
| 155 | return false; |
| 156 | } |
| 157 | |
| 158 | function prepareMIME_Header($message, $boundary) { |
| 159 | $mime_header = $message->mime_header; |
| 160 | $rn="\r\n"; |
| 161 | $header = array(); |
| 162 | |
| 163 | $contenttype = 'Content-Type: '. $mime_header->type0 .'/'. |
| 164 | $mime_header->type1; |
| 165 | if (count($message->entities)) { |
| 166 | $contenttype .= ";\r\n " . 'boundary="'.$boundary.'"'; |
| 167 | } |
| 168 | if (isset($mime_header->parameters['name'])) { |
| 169 | $contenttype .= '; name="'. |
| 170 | encodeHeader($mime_header->parameters['name']). '"'; |
| 171 | } |
| 172 | if (isset($mime_header->parameters['charset'])) { |
| 173 | $charset = $mime_header->parameters['charset']; |
| 174 | $contenttype .= '; charset="'. |
| 175 | encodeHeader($charset). '"'; |
| 176 | } |
| 177 | |
| 178 | |
| 179 | $header[] = $contenttype . $rn; |
| 180 | if ($mime_header->description) { |
| 181 | $header[] .= 'Content-Description: ' . $mime_header->description . $rn; |
| 182 | } |
| 183 | if ($mime_header->encoding) { |
| 184 | $encoding = $mime_header->encoding; |
| 185 | $header[] .= 'Content-Transfer-Encoding: ' . $mime_header->encoding . $rn; |
| 186 | } else { |
| 187 | if ($mime_header->type0 == 'text' || $mime_header->type0 == 'message') { |
| 188 | $header[] .= 'Content-Transfer-Encoding: 8bit' . $rn; |
| 189 | } else { |
| 190 | $header[] .= 'Content-Transfer-Encoding: base64' . $rn; |
| 191 | } |
| 192 | } |
| 193 | if ($mime_header->id) { |
| 194 | $header[] .= 'Content-ID: ' . $mime_header->id . $rn; |
| 195 | } |
| 196 | if ($mime_header->disposition) { |
| 197 | $disposition = $mime_header->disposition; |
| 198 | $contentdisp = 'Content-Disposition: ' . $disposition->name; |
| 199 | if ($disposition->getProperty('filename')) { |
| 200 | $contentdisp .= '; filename="'. |
| 201 | encodeHeader($disposition->getProperty('filename')). '"'; |
| 202 | } |
| 203 | $header[] = $contentdisp . $rn; |
| 204 | } |
| 205 | if ($mime_header->md5) { |
| 206 | $header[] .= 'Content-MD5: ' . $mime_header->md5 . $rn; |
| 207 | } |
| 208 | if ($mime_header->language) { |
| 209 | $header[] .= 'Content-Language: ' . $mime_header->language . $rn; |
| 210 | } |
| 211 | |
| 212 | $cnt = count($header); |
| 213 | $hdr_s = ''; |
| 214 | for ($i = 0 ; $i < $cnt ; $i++) { |
| 215 | $hdr_s .= $this->foldLine($header[$i], 78,str_pad('',4)); |
| 216 | } |
| 217 | $header = $hdr_s; |
| 218 | $header .= $rn; /* One blank line to separate mimeheader and body-entity */ |
| 219 | return $header; |
| 220 | } |
| 221 | |
| 222 | function prepareRFC822_Header($rfc822_header, $reply_rfc822_header, &$raw_length) { |
| 223 | global $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT; |
| 224 | global $version, $useSendmail, $username; |
| 225 | global $HTTP_VIA, $HTTP_X_FORWARDED_FOR; |
| 226 | global $REMOTE_HOST; |
| 227 | $rn = "\r\n"; |
| 228 | /* This creates an RFC 822 date */ |
| 229 | $date = date("D, j M Y H:i:s ", mktime()) . $this->timezone(); |
| 230 | /* Create a message-id */ |
| 231 | $message_id = '<' . $REMOTE_PORT . '.' . $REMOTE_ADDR . '.'; |
| 232 | $message_id .= time() . '.squirrel@' . $SERVER_NAME .'>'; |
| 233 | /* Make an RFC822 Received: line */ |
| 234 | if (isset($REMOTE_HOST)) { |
| 235 | $received_from = "$REMOTE_HOST ([$REMOTE_ADDR])"; |
| 236 | } else { |
| 237 | $received_from = $REMOTE_ADDR; |
| 238 | } |
| 239 | if (isset($HTTP_VIA) || isset ($HTTP_X_FORWARDED_FOR)) { |
| 240 | if ($HTTP_X_FORWARDED_FOR == '') { |
| 241 | $HTTP_X_FORWARDED_FOR = 'unknown'; |
| 242 | } |
| 243 | $received_from .= " (proxying for $HTTP_X_FORWARDED_FOR)"; |
| 244 | } |
| 245 | $header = array(); |
| 246 | $header[] = "Received: from $received_from" . $rn; |
| 247 | $header[] = " (SquirrelMail authenticated user $username)" . $rn; |
| 248 | $header[] = " by $SERVER_NAME with HTTP;" . $rn; |
| 249 | $header[] = " $date" . $rn; |
| 250 | /* Insert the rest of the header fields */ |
| 251 | $header[] = 'Message-ID: '. $message_id . $rn; |
| 252 | if ($reply_rfc822_header->message_id) { |
| 253 | $header[] = 'In-Reply-To: '.$reply_rfc822_header->message_id . $rn; |
| 254 | $references = $this->calculate_references($reply_rfc822_header); |
| 255 | $header[] = 'References: '.$references . $rn; |
| 256 | } |
| 257 | $header[] = "Date: $date" . $rn; |
| 258 | $header[] = 'Subject: '.encodeHeader($rfc822_header->subject) . $rn; |
| 259 | $header[] = 'From: '. encodeHeader($rfc822_header->getAddr_s('from')) . $rn; |
| 260 | /* RFC2822 if from contains more then 1 address */ |
| 261 | if (count($rfc822_header->from) > 1) { |
| 262 | $header[] = 'Sender: '. encodeHeader($rfc822_header->getAddr_s('sender')) . $rn; |
| 263 | } |
| 264 | if (count($rfc822_header->to)) { |
| 265 | $header[] = 'To: '. encodeHeader($rfc822_header->getAddr_s('to')) . $rn; |
| 266 | } |
| 267 | if (count($rfc822_header->cc)) { |
| 268 | $header[] = 'Cc: '. encodeHeader($rfc822_header->getAddr_s('cc')) . $rn; |
| 269 | } |
| 270 | if (count($rfc822_header->reply_to)) { |
| 271 | $header[] = 'Reply-To: '. encodeHeader($rfc822_header->getAddr_s('reply_to')) . $rn; |
| 272 | } |
| 273 | /* Sendmail should return true. Default = false */ |
| 274 | $bcc = $this->getBcc(); |
| 275 | if (count($rfc822_header->bcc)) { |
| 276 | $s = 'Bcc: '. encodeHeader($rfc822_header->getAddr_s('bcc')) . $rn; |
| 277 | if (!$bcc) { |
| 278 | $s = $this->foldLine($s, 78, str_pad('',4)); |
| 279 | $raw_length += strlen($s); |
| 280 | } else { |
| 281 | $header[] = $s; |
| 282 | } |
| 283 | } |
| 284 | /* Identify SquirrelMail */ |
| 285 | $header[] = "X-Mailer: SquirrelMail (version $version)" . $rn; |
| 286 | /* Do the MIME-stuff */ |
| 287 | $header[] = "MIME-Version: 1.0" . $rn; |
| 288 | $contenttype = 'Content-Type: '. $rfc822_header->content_type->type0 .'/'. |
| 289 | $rfc822_header->content_type->type1; |
| 290 | if (count($rfc822_header->content_type->properties)) { |
| 291 | foreach ($rfc822_header->content_type->properties as $k => $v) { |
| 292 | if ($k && $v) { |
| 293 | $contenttype .= ';' .$k.'='.$v; |
| 294 | } |
| 295 | } |
| 296 | } |
| 297 | $header[] = $contenttype . $rn; |
| 298 | if ($rfc822_header->dnt) { |
| 299 | $dnt = $rfc822_header->getAddr_s('dnt'); |
| 300 | /* Pegasus Mail */ |
| 301 | $header[] = 'X-Confirm-Reading-To: '.$dnt. $rn; |
| 302 | /* RFC 2298 */ |
| 303 | $header[] = 'Disposition-Notification-To: '.$dnt. $rn; |
| 304 | } |
| 305 | if ($rfc822_header->priority) { |
| 306 | $prio = $rfc822_header->priority; |
| 307 | $header[] = 'X-Priority: '.$prio. $rn; |
| 308 | switch($prio) { |
| 309 | case 1: $header[] = 'Importance: High'. $rn; break; |
| 310 | case 3: $header[] = 'Importance: Normal'. $rn; break; |
| 311 | case 5: $header[] = 'Importance: Low'. $rn; break; |
| 312 | default: break; |
| 313 | } |
| 314 | } |
| 315 | /* Insert headers from the $more_headers array */ |
| 316 | if(count($rfc822_header->more_headers)) { |
| 317 | reset($rfc822_header->more_headers); |
| 318 | foreach ($rfc822_header->more_headers as $k => $v) { |
| 319 | $header[] = $k.': '.$v .$rn; |
| 320 | } |
| 321 | } |
| 322 | $cnt = count($header); |
| 323 | $hdr_s = ''; |
| 324 | for ($i = 0 ; $i < $cnt ; $i++) { |
| 325 | $hdr_s .= $this->foldLine($header[$i], 78, str_pad('',4)); |
| 326 | } |
| 327 | $header = $hdr_s; |
| 328 | $header .= $rn; /* One blank line to separate header and body */ |
| 329 | $raw_length += strlen($header); |
| 330 | return $header; |
| 331 | } |
| 332 | |
| 333 | /* |
| 334 | * function for cleanly folding of headerlines |
| 335 | */ |
| 336 | function foldLine($line, $length, $pre='') { |
| 337 | $cnt = strlen($line); |
| 338 | $res = ''; |
| 339 | if ($cnt > $length) { |
| 340 | $fold_string = "\r\n " . $pre; |
| 341 | $length -=strlen($fold_string); |
| 342 | for ($i=0;$i<($cnt-$length);$i++) { |
| 343 | $fold_pos = 0; |
| 344 | /* first try to fold at delimiters */ |
| 345 | for ($j=($i+$length); $j>$i; --$j) { |
| 346 | switch ($line{$j}) { |
| 347 | case (','): |
| 348 | case (';'): $fold_pos = $i = $j; break; |
| 349 | default: break; |
| 350 | } |
| 351 | } |
| 352 | if (!$fold_pos) { /* not succeed yet so we try at spaces & = */ |
| 353 | for ($j=($i+$length); $j>$i; $j--) { |
| 354 | switch ($line{$j}) { |
| 355 | case (' '): |
| 356 | case ('='): $fold_pos = $i = $j; break; |
| 357 | default: break; |
| 358 | } |
| 359 | } |
| 360 | } |
| 361 | if (!$fold_pos) { /* clean folding didn't work */ |
| 362 | $i = $j = $fold_pos = $i+$length; |
| 363 | } |
| 364 | $line = substr_replace($line,$line{$fold_pos}.$fold_string, |
| 365 | $fold_pos,1); |
| 366 | $cnt += strlen($fold_string); |
| 367 | $i = $j + strlen($fold_string); |
| 368 | } |
| 369 | } |
| 370 | return $line; |
| 371 | } |
| 372 | |
| 373 | |
| 374 | function mimeBoundary () { |
| 375 | static $mimeBoundaryString; |
| 376 | |
| 377 | if ( !isset( $mimeBoundaryString ) || |
| 378 | $mimeBoundaryString == '') { |
| 379 | $mimeBoundaryString = '----=_' . date( 'YmdHis' ) . '_' . |
| 380 | mt_rand( 10000, 99999 ); |
| 381 | } |
| 382 | return $mimeBoundaryString; |
| 383 | } |
| 384 | |
| 385 | /* Time offset for correct timezone */ |
| 386 | function timezone () { |
| 387 | global $invert_time; |
| 388 | |
| 389 | $diff_second = date('Z'); |
| 390 | if ($invert_time) { |
| 391 | $diff_second = - $diff_second; |
| 392 | } |
| 393 | if ($diff_second > 0) { |
| 394 | $sign = '+'; |
| 395 | } else { |
| 396 | $sign = '-'; |
| 397 | } |
| 398 | $diff_second = abs($diff_second); |
| 399 | $diff_hour = floor ($diff_second / 3600); |
| 400 | $diff_minute = floor (($diff_second-3600*$diff_hour) / 60); |
| 401 | $zonename = '('.strftime('%Z').')'; |
| 402 | $result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute, |
| 403 | $zonename); |
| 404 | return ($result); |
| 405 | } |
| 406 | |
| 407 | function calculate_references($hdr) { |
| 408 | $refer = $hdr->references; |
| 409 | if (strlen($refer) > 2) { |
| 410 | $refer .= ' ' . $hdr->message_id; |
| 411 | } else { |
| 412 | if ($hdr->in_reply_to) { |
| 413 | $refer .= $hdr->in_reply_to . ' ' . $hdr->message_id; |
| 414 | } else { |
| 415 | $refer .= $hdr->message_id; |
| 416 | } |
| 417 | } |
| 418 | trim($refer); |
| 419 | return $refer; |
| 420 | } |
| 421 | } |
| 422 | ?> |