functions/smtp.php

   1 <?php
   2
   3 /**
   4  * smtp.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  * an smtp server or sendmail.
  11  *
  12  * $Id$
  13  */
  14
  15 require_once('../functions/addressbook.php');
  16 require_once('../functions/plugin.php');
  17 require_once('../functions/prefs.php');
  18
  19 global $username, $popuser, $domain;
  20
  21 /* This should most probably go to some initialization... */
  22 if (ereg("^([^@%/]+)[@%/](.+)$", $username, $usernamedata)) {
  23     $popuser = $usernamedata[1];
  24     $domain  = $usernamedata[2];
  25     unset($usernamedata);
  26 } else {
  27     $popuser = $username;
  28 }
  29 /* We need domain for smtp */
  30 if (!$domain) {
  31     $domain = getenv('HOSTNAME');
  32 }
  33
  34 /* Returns true only if this message is multipart */
  35 function isMultipart ($session) {
  36     global $attachments;
  37
  38     foreach ($attachments as $info) {
  39         if ($info['session'] == $session) {
  40             return true;
  41         }
  42     }
  43     return false;
  44 }
  45
  46 /* looks up aliases in the addressbook and expands them to
  47  * the full address.
  48  *
  49  * Adds @$domain if it wasn't in the address book and if it
  50  * doesn't have an @ symbol in it
  51  */
  52 function expandAddrs ($array) {
  53     global $domain;
  54
  55     /* don't show errors -- kinda critical that we don't see
  56      * them here since the redirect won't work if we do show them
  57      */
  58     $abook = addressbook_init(false, true);
  59     for ($i=0; $i < count($array); $i++) {
  60         $result = $abook->lookup($array[$i]);
  61         $ret = "";
  62         if (isset($result['email'])) {
  63             if (isset($result['name'])) {
  64                 $ret = '"'.$result['name'].'" ';
  65             }
  66             $ret .= '<'.$result['email'].'>';
  67             $array[$i] = $ret;
  68         }
  69         else
  70         {
  71             if (strpos($array[$i], '@') === false) {
  72                 $array[$i] .= '@' . $domain;
  73             }
  74             $array[$i] = '<' . $array[$i] . '>';
  75         }
  76     }
  77     return $array;
  78 }
  79
  80
  81 /* looks up aliases in the addressbook and expands them to
  82  * the RFC 821 valid RCPT address. ie <user@example.com>
  83  * Adds @$domain if it wasn't in the address book and if it
  84  * doesn't have an @ symbol in it
  85  */
  86 function expandRcptAddrs ($array) {
  87     global $domain;
  88
  89     /* don't show errors -- kinda critical that we don't see
  90      * them here since the redirect won't work if we do show them
  91      */
  92     $abook = addressbook_init(false, true);
  93     for ($i=0; $i < count($array); $i++) {
  94         $result = $abook->lookup($array[$i]);
  95         $ret = "";
  96         if (isset($result['email'])) {
  97             $ret = '<'.$result['email'].'>';
  98             $array[$i] = $ret;
  99         }
 100         else {
 101             if (strpos($array[$i], '@') === false) {
 102                 $array[$i] .= '@' . $domain;
 103             }
 104             $array[$i] = '<' . $array[$i] . '>';
 105         }
 106     }
 107     return $array;
 108 }
 109
 110
 111 /* Attach the files that are due to be attached
 112  */
 113 function attachFiles ($fp, $session, $rn="\r\n") {
 114     global $attachments, $attachment_dir, $username;
 115
 116     $length = 0;
 117
 118     $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
 119     if (isMultipart($session)) {
 120         foreach ($attachments as $info) {
 121             if ($info['session'] == $session) {
 122                 if (isset($info['type'])) {
 123                     $filetype = $info['type'];
 124                 }
 125                 else {
 126                     $filetype = 'application/octet-stream';
 127                 }
 128
 129                 $header = '--' . mimeBoundary() . "$rn";
 130                 if ( isset($info['remotefilename'])
 131                      && $info['remotefilename'] != '') {
 132                     $header .= "Content-Type: $filetype; name=\"" .
 133                          encodeHeader(charset_encode_japanese($info['remotefilename'])) . "\"$rn";
 134                     $header .= "Content-Disposition: attachment; filename=\""
 135                          . encodeHeader(charset_encode_japanese($info['remotefilename'])) . "\"$rn";
 136                 } else {
 137                     $header .= "Content-Type: $filetype$rn";
 138                 }
 139
 140
 141                 /* Use 'rb' for NT systems -- read binary
 142                  * Unix doesn't care -- everything's binary!  :-)
 143                  */
 144
 145                 $filename = $hashed_attachment_dir . '/'
 146                     . $info['localfilename'];
 147                 $file = fopen ($filename, 'rb');
 148                 if (substr($filetype, 0, 5) == 'text/' ||
 149                     substr($filetype, 0, 8) == 'message/' ) {
 150                     $header .= $rn;
 151                                         if ($fp) {
 152                                             fputs ($fp, $header);
 153                                         }
 154                     $length += strlen($header);
 155                     while ($tmp = fgets($file, 4096)) {
 156                         $tmp = str_replace("\r\n", "\n", $tmp);
 157                         $tmp = str_replace("\r", "\n", $tmp);
 158                         if ($rn == "\r\n"){
 159                             $tmp = str_replace("\n", "\r\n", $tmp);
 160                         }
 161                         if ($fp) {
 162                             fputs($fp, $tmp);
 163                         }
 164                         $length += strlen($tmp);
 165                     }
 166                     if (substr($tmp, strlen($tmp) - strlen($rn), strlen($rn)) != $rn) {
 167                         if ($fp) {
 168                             fputs($fp, $rn);
 169                         }
 170                     }
 171                 } else {
 172                     $header .= "Content-Transfer-Encoding: base64"
 173                         . "$rn" . "$rn";
 174                     if ($fp) fputs ($fp, $header);
 175                     $length += strlen($header);
 176                     while ($tmp = fread($file, 570)) {
 177                         $encoded = chunk_split(base64_encode($tmp));
 178                         $length += strlen($encoded);
 179                         if ($fp) fputs ($fp, $encoded);
 180                     }
 181                 }
 182                 fclose ($file);
 183             }
 184         }
 185     }
 186     return $length;
 187 }
 188
 189 /* Delete files that are uploaded for attaching
 190  */
 191 function deleteAttachments($session) {
 192     global $username, $attachments, $attachment_dir, $data_dir;
 193     $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
 194
 195     $rem_attachments = array();
 196     foreach ($attachments as $info) {
 197         if ($info['session'] == $session) {
 198             $attached_file = "$hashed_attachment_dir/$info[localfilename]";
 199             if (file_exists($attached_file)) {
 200                 unlink($attached_file);
 201             }
 202         } else {
 203             $rem_attachments[] = $info;
 204         }
 205     }
 206     $attachments = $rem_attachments;
 207     setPref($data_dir, $username, 'attachments', serialize($attachments));
 208 }
 209
 210 /* Return a nice MIME-boundary
 211  */
 212 function mimeBoundary () {
 213     static $mimeBoundaryString;
 214
 215     if ( !isset( $mimeBoundaryString ) ||
 216          $mimeBoundaryString == '') {
 217         $mimeBoundaryString = '----=_' . date( 'YmdHis' ) . '_' .
 218             mt_rand( 10000, 99999 );
 219     }
 220
 221     return $mimeBoundaryString;
 222 }
 223
 224 /* Time offset for correct timezone */
 225 function timezone () {
 226     global $invert_time;
 227
 228     $diff_second = date('Z');
 229     if ($invert_time) {
 230         $diff_second = - $diff_second;
 231     }
 232     if ($diff_second > 0) {
 233         $sign = '+';
 234     }
 235     else {
 236         $sign = '-';
 237     }
 238
 239     $diff_second = abs($diff_second);
 240
 241     $diff_hour = floor ($diff_second / 3600);
 242     $diff_minute = floor (($diff_second-3600*$diff_hour) / 60);
 243
 244     $zonename = '('.strftime('%Z').')';
 245     $result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute,
 246                        $zonename);
 247     return ($result);
 248 }
 249
 250 /* Print all the needed RFC822 headers */
 251 function write822Header ($fp, $t, $c, $b, $subject, $body, $more_headers, $session, $rn="\r\n") {
 252     global $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT;
 253     global $data_dir, $username, $popuser, $domain, $version, $useSendmail;
 254     global $default_charset, $HTTP_VIA, $HTTP_X_FORWARDED_FOR;
 255     global $REMOTE_HOST, $identity;
 256
 257     /* Storing the header to make sure the header is the same
 258      * everytime the header is printed.
 259      */
 260     static $header, $headerlength, $headerrn;
 261
 262     if ($header == '') {
 263                 $headerrn = $rn;
 264         $to = expandAddrs(parseAddrs($t));
 265         $cc = expandAddrs(parseAddrs($c));
 266         $bcc = expandAddrs(parseAddrs($b));
 267         if (isset($identity) && $identity != 'default') {
 268             $reply_to = getPref($data_dir, $username, 'reply_to' . $identity);
 269             $from = getPref($data_dir, $username, 'full_name' . $identity);
 270             $from_addr = getFrom();
 271         } else {
 272             $reply_to = getPref($data_dir, $username, 'reply_to');
 273             $from = getPref($data_dir, $username, 'full_name');
 274             $from_addr = getFrom();
 275         }
 276
 277         $to_list = getLineOfAddrs($to);
 278         $cc_list = getLineOfAddrs($cc);
 279         $bcc_list = getLineOfAddrs($bcc);
 280
 281         /* Encoding 8-bit characters and making from line */
 282         $subject = encodeHeader($subject);
 283         if ($from == '') {
 284             $from = "<$from_addr>";
 285         }
 286         else {
 287             $from = '"' . encodeHeader($from) . "\" <$from_addr>";
 288         }
 289
 290         /* This creates an RFC 822 date */
 291         $date = date("D, j M Y H:i:s ", mktime()) . timezone();
 292
 293         /* Create a message-id */
 294         $message_id = '<' . $REMOTE_PORT . '.' . $REMOTE_ADDR . '.';
 295         $message_id .= time() . '.squirrel@' . $SERVER_NAME .'>';
 296
 297         /* Make an RFC822 Received: line */
 298         if (isset($REMOTE_HOST)) {
 299             $received_from = "$REMOTE_HOST ([$REMOTE_ADDR])";
 300         }
 301         else {
 302             $received_from = $REMOTE_ADDR;
 303         }
 304
 305         if (isset($HTTP_VIA) || isset ($HTTP_X_FORWARDED_FOR)) {
 306             if ($HTTP_X_FORWARDED_FOR == '') {
 307                 $HTTP_X_FORWARDED_FOR = 'unknown';
 308             }
 309             $received_from .= " (proxying for $HTTP_X_FORWARDED_FOR)";
 310         }
 311
 312         $header  = "Received: from $received_from" . $rn;
 313         $header .= "        (SquirrelMail authenticated user $username)" . $rn;
 314         $header .= "        by $SERVER_NAME with HTTP;" . $rn;
 315         $header .= "        $date" . $rn;
 316
 317         /* Insert the rest of the header fields */
 318         $header .= "Message-ID: $message_id" . $rn;
 319         $header .= "Date: $date" . $rn;
 320         $header .= "Subject: $subject" . $rn;
 321         $header .= "From: $from" . $rn;
 322         $header .= "To: $to_list" . $rn;    // Who it's TO
 323
 324         if (isset($more_headers["Content-Type"])) {
 325             $contentType = $more_headers["Content-Type"];
 326             unset($more_headers["Content-Type"]);
 327         }
 328         else {
 329             if (isMultipart($session)) {
 330                 $contentType = "multipart/mixed;";
 331             }
 332             else {
 333                 if ($default_charset != '') {
 334                     $contentType = 'text/plain; charset='.$default_charset;
 335                 }
 336                 else {
 337                     $contentType = 'text/plain;';
 338                 }
 339             }
 340         }
 341
 342         /* Insert headers from the $more_headers array */
 343         if(is_array($more_headers)) {
 344             reset($more_headers);
 345             while(list($h_name, $h_val) = each($more_headers)) {
 346                 if ($h_name == 'References') {
 347                     $h_val = str_replace(' ', "$rn        ", $h_val);
 348                 }
 349                 $header .= sprintf("%s: %s%s", $h_name, $h_val, $rn);
 350             }
 351         }
 352
 353         if ($cc_list) {
 354             $header .= "Cc: $cc_list" . $rn; // Who the CCs are
 355         }
 356
 357         if ($reply_to != '') {
 358             $header .= "Reply-To: $reply_to" . $rn;
 359         }
 360
 361         if ($useSendmail) {
 362             if ($bcc_list) {
 363                 // BCCs is removed from header by sendmail
 364                 $header .= "Bcc: $bcc_list" . $rn;
 365             }
 366         }
 367
 368         /* Identify SquirrelMail */
 369         $header .= "X-Mailer: SquirrelMail (version $version)" . $rn;
 370
 371         /* Do the MIME-stuff */
 372         $header .= "MIME-Version: 1.0" . $rn;
 373
 374         if (isMultipart($session)) {
 375             $header .= 'Content-Type: '.$contentType.' boundary="';
 376             $header .= mimeBoundary();
 377             $header .= "\"$rn";
 378         } else {
 379             if (strtolower($default_charset) == 'iso-2022-jp') {
 380                 if (mb_detect_encoding($body) == 'ASCII') {
 381                     $header .= 'Content-Type: text/plain; US-ASCII' . $rn;
 382                     $header .= "Content-Transfer-Encoding: 8bit" . $rn;
 383                 } else {
 384                     $header .= 'Content-Type: '.$contentType . $rn;
 385                     $header .= "Content-Transfer-Encoding: 7bit" . $rn;
 386                 }
 387             } else {
 388             $header .= 'Content-Type: ' . $contentType . $rn;
 389             $header .= "Content-Transfer-Encoding: 8bit" . $rn;
 390         }
 391         }
 392         $header .= $rn; // One blank line to separate header and body
 393
 394         $headerlength = strlen($header);
 395     }
 396
 397         if ($headerrn != $rn) {
 398                 $header = str_replace($headerrn, $rn, $header);
 399         $headerlength = strlen($header);
 400                 $headerrn = $rn;
 401         }
 402
 403     /* Write the header */
 404     if ($fp) fputs ($fp, $header);
 405
 406     return $headerlength;
 407 }
 408
 409 /* Send the body
 410  */
 411 function writeBody ($fp, $passedBody, $session, $rn="\r\n") {
 412     global $default_charset;
 413
 414     $attachmentlength = 0;
 415
 416     if (isMultipart($session)) {
 417         $body = '--'.mimeBoundary() . $rn;
 418
 419         if ($default_charset != "") {
 420             $body .= "Content-Type: text/plain; charset=$default_charset".$rn;
 421         }
 422         else {
 423             $body .= "Content-Type: text/plain" . $rn;
 424         }
 425
 426         if (strtolower($default_charset) == 'iso-2022-jp') {
 427             if (mb_detect_encoding($passedBody) == 'ASCII') {
 428                 $body .= "Content-Transfer-Encoding: 8bit" . $rn . $rn .
 429                          $passedBody . $rn . $rn;
 430             } else {
 431                 $body .= "Content-Transfer-Encoding: 7bit\r\n\r\n" .
 432                          mb_convert_encoding($passedBody, 'JIS') . "\r\n\r\n";
 433             }
 434         } else {
 435         $body .= "Content-Transfer-Encoding: 8bit" . $rn . $rn .
 436                  $passedBody . $rn . $rn;
 437         }
 438         if ($fp) {
 439             fputs ($fp, $body);
 440         }
 441
 442         $attachmentlength = attachFiles($fp, $session, $rn);
 443
 444         if (!isset($postbody)) {
 445             $postbody = "";
 446         }
 447         $postbody .= $rn . "--" . mimeBoundary() . "--" . $rn . $rn;
 448         if ($fp) fputs ($fp, $postbody);
 449     } else {
 450         if (strtolower($default_charset) == 'iso-2022-jp') {
 451             $body = mb_convert_encoding($passedBody, 'JIS') . $rn;
 452         } else {
 453             $body = $passedBody . $rn;
 454         }
 455         if ($fp) {
 456             fputs ($fp, $body);
 457         }
 458         $postbody = $rn;
 459         if ($fp) {
 460             fputs ($fp, $postbody);
 461         }
 462     }
 463
 464     return (strlen($body) + strlen($postbody) + $attachmentlength);
 465 }
 466
 467 /* Send mail using the sendmail command
 468  */
 469 function sendSendmail($t, $c, $b, $subject, $body, $more_headers, $session) {
 470     global $sendmail_path, $popuser, $username, $domain;
 471
 472     /* Build envelope sender address. Make sure it doesn't contain
 473      * spaces or other "weird" chars that would allow a user to
 474      * exploit the shell/pipe it is used in.
 475      */
 476     $envelopefrom = getFrom();
 477     $envelopefrom = ereg_replace("[[:blank:]]",'', $envelopefrom);
 478     $envelopefrom = ereg_replace("[[:space:]]",'', $envelopefrom);
 479     $envelopefrom = ereg_replace("[[:cntrl:]]",'', $envelopefrom);
 480
 481     /**
 482      * open pipe to sendmail or qmail-inject
 483      * (qmail-inject doesn't accept -t param)
 484      */
 485     if (strstr($sendmail_path, "qmail-inject")) {
 486         $fp = popen (escapeshellcmd("$sendmail_path -f$envelopefrom"), "w");
 487     } else {
 488         $fp = popen (escapeshellcmd("$sendmail_path -t -f$envelopefrom"), "w");
 489     }
 490
 491     $headerlength = write822Header ($fp, $t, $c, $b, $subject, $body,
 492                                     $more_headers, $session, "\n");
 493     $bodylength = writeBody($fp, $body, $session, "\n");
 494
 495     pclose($fp);
 496
 497     return ($headerlength + $bodylength);
 498 }
 499
 500 function smtpReadData($smtpConnection) {
 501     $read = fgets($smtpConnection, 1024);
 502     $counter = 0;
 503     while ($read) {
 504         echo $read . '<BR>';
 505         $data[$counter] = $read;
 506         $read = fgets($smtpConnection, 1024);
 507         $counter++;
 508     }
 509 }
 510
 511 function sendSMTP($t, $c, $b, $subject, $body, $more_headers, $session) {
 512     global $username, $popuser, $domain, $version, $smtpServerAddress,
 513         $smtpPort, $data_dir, $color, $use_authenticated_smtp, $identity,
 514         $key, $onetimepad;
 515
 516     $to = expandRcptAddrs(parseAddrs($t));
 517     $cc = expandRcptAddrs(parseAddrs($c));
 518     $bcc = expandRcptAddrs(parseAddrs($b));
 519     if (isset($identity) && $identity != 'default') {
 520         $from_addr = getPref($data_dir, $username,
 521                              'email_address' . $identity);
 522     }
 523     else {
 524         $from_addr = getPref($data_dir, $username, 'email_address');
 525     }
 526
 527     if (!$from_addr) {
 528         $from_addr = "$popuser@$domain";
 529     }
 530
 531     /* POP3 BEFORE SMTP CODE HERE */
 532     global $pop_before_smtp;
 533     if (isset($pop_before_smtp) && $pop_before_smtp === true) {
 534         if (!isset($pop_port)) {
 535             $pop_port = 110;
 536         }
 537         if (!isset($pop_server)) {
 538             $pop_server = $smtpServerAddress; /* usually the same host! */
 539         }
 540         $popConnection = fsockopen($pop_server, $pop_port, $err_no, $err_str);
 541         if (!$popConnection) {
 542             error_log("Error connecting to POP Server ($pop_server:$pop_port)"
 543                   . " $err_no : $err_str");
 544         } else {
 545             $tmp = fgets($popConnection, 1024); /* banner */
 546             if (!eregi("^\+OK", $tmp, $regs)) {
 547                 return(0);
 548             }
 549             fputs($popConnection, "USER $username\r\n");
 550             $tmp = fgets($popConnection, 1024);
 551             if (!eregi("^\+OK", $tmp, $regs)) {
 552                 return(0);
 553             }
 554             fputs($popConnection, 'PASS ' . OneTimePadDecrypt($key, $onetimepad) . "\r\n");
 555             $tmp = fgets($popConnection, 1024);
 556             if (!eregi("^\+OK", $tmp, $regs)) {
 557                 return(0);
 558             }
 559             fputs($popConnection, "QUIT\r\n"); /* log off */
 560             fclose($popConnection);
 561         }
 562     }
 563
 564     $smtpConnection = fsockopen($smtpServerAddress, $smtpPort,
 565                                 $errorNumber, $errorString);
 566     if (!$smtpConnection) {
 567         echo 'Error connecting to SMTP Server.<br>';
 568         echo "$errorNumber : $errorString<br>";
 569         exit;
 570     }
 571     $tmp = fgets($smtpConnection, 1024);
 572     if (errorCheck($tmp, $smtpConnection)!=5) {
 573         return(0);
 574     }
 575
 576     $to_list = getLineOfAddrs($to);
 577     $cc_list = getLineOfAddrs($cc);
 578
 579     /* Lets introduce ourselves */
 580     if (! isset ($use_authenticated_smtp)
 581         || $use_authenticated_smtp == false) {
 582         fputs($smtpConnection, "HELO $domain\r\n");
 583         $tmp = fgets($smtpConnection, 1024);
 584         if (errorCheck($tmp, $smtpConnection)!=5) return(0);
 585     } else {
 586         fputs($smtpConnection, "EHLO $domain\r\n");
 587         $tmp = fgets($smtpConnection, 1024);
 588         if (errorCheck($tmp, $smtpConnection)!=5) return(0);
 589
 590         fputs($smtpConnection, "AUTH LOGIN\r\n");
 591         $tmp = fgets($smtpConnection, 1024);
 592         if (errorCheck($tmp, $smtpConnection)!=5) {
 593             return(0);
 594         }
 595
 596         fputs($smtpConnection, base64_encode ($username) . "\r\n");
 597         $tmp = fgets($smtpConnection, 1024);
 598         if (errorCheck($tmp, $smtpConnection)!=5) {
 599             return(0);
 600         }
 601
 602         fputs($smtpConnection, base64_encode
 603               (OneTimePadDecrypt($key, $onetimepad)) . "\r\n");
 604         $tmp = fgets($smtpConnection, 1024);
 605         if (errorCheck($tmp, $smtpConnection)!=5) {
 606             return(0);
 607         }
 608     }
 609
 610     /* Ok, who is sending the message? */
 611     fputs($smtpConnection, "MAIL FROM: <$from_addr>\r\n");
 612     $tmp = fgets($smtpConnection, 1024);
 613     if (errorCheck($tmp, $smtpConnection)!=5) {
 614         return(0);
 615     }
 616
 617     /* send who the recipients are */
 618     for ($i = 0; $i < count($to); $i++) {
 619         fputs($smtpConnection, "RCPT TO: $to[$i]\r\n");
 620         $tmp = fgets($smtpConnection, 1024);
 621         if (errorCheck($tmp, $smtpConnection)!=5) {
 622             return(0);
 623         }
 624     }
 625     for ($i = 0; $i < count($cc); $i++) {
 626         fputs($smtpConnection, "RCPT TO: $cc[$i]\r\n");
 627         $tmp = fgets($smtpConnection, 1024);
 628         if (errorCheck($tmp, $smtpConnection)!=5) {
 629             return(0);
 630         }
 631     }
 632     for ($i = 0; $i < count($bcc); $i++) {
 633         fputs($smtpConnection, "RCPT TO: $bcc[$i]\r\n");
 634         $tmp = fgets($smtpConnection, 1024);
 635         if (errorCheck($tmp, $smtpConnection)!=5) {
 636             return(0);
 637         }
 638     }
 639
 640     /* Lets start sending the actual message */
 641     fputs($smtpConnection, "DATA\r\n");
 642     $tmp = fgets($smtpConnection, 1024);
 643     if (errorCheck($tmp, $smtpConnection)!=5) {
 644         return(0);
 645     }
 646
 647     /* Send the message */
 648     $headerlength = write822Header ($smtpConnection, $t, $c, $b,
 649                                     $subject, $body, $more_headers, $session);
 650     $bodylength = writeBody($smtpConnection, $body, $session);
 651
 652     fputs($smtpConnection, ".\r\n"); /* end the DATA part */
 653     $tmp = fgets($smtpConnection, 1024);
 654     $num = errorCheck($tmp, $smtpConnection, true);
 655     if ($num != 250) {
 656         return(0);
 657     }
 658
 659     fputs($smtpConnection, "QUIT\r\n"); /* log off */
 660
 661     fclose($smtpConnection);
 662
 663     return ($headerlength + $bodylength);
 664 }
 665
 666
 667 function errorCheck($line, $smtpConnection, $verbose = false) {
 668     global $color, $compose_new_win;
 669
 670     /* Read new lines on a multiline response */
 671     $lines = $line;
 672     while(ereg("^[0-9]+-", $line)) {
 673         $line = fgets($smtpConnection, 1024);
 674         $lines .= $line;
 675     }
 676
 677     /* Status:  0 = fatal
 678      *          5 = ok
 679      */
 680     $err_num = substr($line, 0, strpos($line, " "));
 681     switch ($err_num) {
 682     case 500:   $message = 'Syntax error; command not recognized';
 683         $status = 0;
 684         break;
 685     case 501:   $message = 'Syntax error in parameters or arguments';
 686         $status = 0;
 687         break;
 688     case 502:   $message = 'Command not implemented';
 689         $status = 0;
 690         break;
 691     case 503:   $message = 'Bad sequence of commands';
 692         $status = 0;
 693         break;
 694     case 504:   $message = 'Command parameter not implemented';
 695         $status = 0;
 696         break;
 697
 698     case 211:   $message = 'System status, or system help reply';
 699         $status = 5;
 700         break;
 701     case 214:   $message = 'Help message';
 702         $status = 5;
 703         break;
 704
 705     case 220:   $message = 'Service ready';
 706         $status = 5;
 707         break;
 708     case 221:   $message = 'Service closing transmission channel';
 709         $status = 5;
 710         break;
 711
 712     case 421:   $message = 'Service not available, closing chanel';
 713         $status = 0;
 714         break;
 715
 716     case 235:   return(5);
 717         break;
 718     case 250:   $message = 'Requested mail action okay, completed';
 719         $status = 5;
 720         break;
 721     case 251:   $message = 'User not local; will forward';
 722         $status = 5;
 723         break;
 724     case 334:   return(5); break;
 725     case 450:   $message = 'Requested mail action not taken:  mailbox unavailable';
 726         $status = 0;
 727         break;
 728     case 550:   $message = 'Requested action not taken:  mailbox unavailable';
 729         $status = 0;
 730         break;
 731     case 451:   $message = 'Requested action aborted:  error in processing';
 732         $status = 0;
 733         break;
 734     case 551:   $message = 'User not local; please try forwarding';
 735         $status = 0;
 736         break;
 737     case 452:   $message = 'Requested action not taken:  insufficient system storage';
 738         $status = 0;
 739         break;
 740     case 552:   $message = 'Requested mail action aborted:  exceeding storage allocation';
 741         $status = 0;
 742         break;
 743     case 553:   $message = 'Requested action not taken: mailbox name not allowed';
 744         $status = 0;
 745         break;
 746     case 354:   $message = 'Start mail input; end with .';
 747         $status = 5;
 748         break;
 749     case 554:   $message = 'Transaction failed';
 750         $status = 0;
 751         break;
 752     default:    $message = 'Unknown response: '. nl2br(htmlspecialchars($lines));
 753         $status = 0;
 754         $error_num = '001';
 755         break;
 756     }
 757
 758     if ($status == 0) {
 759         include_once('../functions/page_header.php');
 760         if ($compose_new_win == '1') {
 761             compose_Header($color, 'None');
 762         }
 763         else {
 764             displayPageHeader($color, 'None');
 765         }
 766         include_once('../functions/display_messages.php');
 767         $lines = nl2br(htmlspecialchars($lines));
 768         $msg  = $message . "<br>\nServer replied: $lines";
 769         plain_error_message($msg, $color);
 770     }
 771     if (! $verbose) return $status;
 772     return $err_num;
 773 }
 774
 775 /* create new reference header per rfc2822 */
 776
 777 function calculate_references($refs, $inreplyto, $old_reply_to) {
 778
 779     $refer = "";
 780     for ($i=1;$i<count($refs[0]);$i++) {
 781         if (!empty($refs[0][$i])) {
 782             if (preg_match("/^References:(.+)$/UA", $refs[0][$i], $regs)) {
 783                 $refer = trim($regs[1]);
 784             }
 785             else {
 786                $refer .= ' ' . trim($refs[0][$i]);
 787             }
 788
 789         }
 790     }
 791     $refer_a = explode(' ', $refer);
 792     $refer = '';
 793     foreach ($refer_a as $ref) {
 794        $ref = trim($ref);
 795        if ($ref{0} == '<' && $ref{(strlen($ref)-1)} == '>') {
 796           $refer .= $ref . ' ';
 797        }
 798     }
 799     $refer = trim($refer);
 800     if (strlen($refer) > 2) {
 801         $refer .= ' ' . $inreplyto;
 802     }
 803     else {
 804         if (!empty($old_reply_to)) {
 805             $refer .= $old_reply_to . ' ' . $inreplyto;
 806         }
 807         else {
 808             $refer .= $inreplyto;
 809         }
 810     }
 811     trim($refer);
 812     return $refer;
 813 }
 814
 815 function sendMessage($t, $c, $b, $subject, $body, $reply_id, $MDN,
 816                      $prio = 3, $session) {
 817     global $useSendmail, $msg_id, $is_reply, $mailbox, $onetimepad,
 818         $data_dir, $username, $domain, $key, $version, $sent_folder,
 819         $imapServerAddress, $imapPort, $default_use_priority, $more_headers,
 820         $request_mdn, $request_dr, $uid_support;
 821
 822     $more_headers = Array();
 823
 824     do_hook('smtp_send');
 825
 826     $imap_stream = sqimap_login($username, $key, $imapServerAddress,
 827                                 $imapPort, 1);
 828
 829     if (isset($reply_id) && $reply_id) {
 830         sqimap_mailbox_select ($imap_stream, $mailbox);
 831         sqimap_messages_flag ($imap_stream, $reply_id, $reply_id, 'Answered', false);
 832
 833         /* Insert In-Reply-To and References headers if the
 834          * message-id of the message we reply to is set (longer than "<>")
 835          * The References header should really be the old Referenced header
 836          * with the message ID appended, and now it is (jmunro)
 837          */
 838         $sid = sqimap_session_id($uid_support);
 839         $query = "$sid FETCH $reply_id (BODY.PEEK[HEADER.FIELDS (Message-Id In-Reply-To)])\r\n";
 840         fputs ($imap_stream, $query);
 841         $read = sqimap_read_data($imap_stream, $sid, true, $response, $message);
 842         $message_id = '';
 843         $in_reply_to = '';
 844
 845         foreach ($read as $r) {
 846                 if (preg_match("/^message-id:(.*)/iA", $r, $regs)) {
 847                     $message_id = trim($regs[1]);
 848                 }
 849                 if (preg_match("/^in-reply-to:(.*)/iA", $r, $regs)) {
 850                     $in_reply_to = trim($regs[1]);
 851                 }
 852         }
 853
 854         if(strlen($message_id) > 2) {
 855             $refs = get_reference_header ($imap_stream, $reply_id);
 856             $inreplyto = $message_id;
 857             $old_reply_to = $in_reply_to;
 858             $refer = calculate_references ($refs, $inreplyto, $old_reply_to);
 859             $more_headers['In-Reply-To'] = $inreplyto;
 860             $more_headers['References']  = $refer;
 861         }
 862
 863     }
 864     if ($default_use_priority) {
 865         $more_headers = array_merge($more_headers, createPriorityHeaders($prio));
 866     }
 867
 868     $requestRecipt = 0;
 869     if (isset($request_dr)) {
 870         $requestRecipt += 1;
 871     }
 872     if (isset($request_mdn)) {
 873         $requestRecipt += 2;
 874     }
 875     if ( $requestRecipt > 0) {
 876         $more_headers = array_merge($more_headers, createReceiptHeaders($requestRecipt));
 877     }
 878
 879     /* In order to remove the problem of users not able to create
 880      * messages with "." on a blank line, RFC821 has made provision
 881      * in section 4.5.2 (Transparency).
 882      */
 883     $body = ereg_replace("\n\\.", "\n..", $body);
 884     $body = ereg_replace("^\\.", "..", $body);
 885
 886     /* this is to catch all plain \n instances and
 887      * replace them with \r\n.  All newlines were converted
 888      * into just \n inside the compose.php file.
 889      * But only if delimiter is, in fact, \r\n.
 890      */
 891
 892     if ($MDN) {
 893         $more_headers["Content-Type"] = "multipart/report; ".
 894             "report-type=disposition-notification;";
 895     }
 896
 897     if ($useSendmail) {
 898         $length = sendSendmail($t, $c, $b, $subject, $body, $more_headers,
 899                                $session);
 900         $body = ereg_replace("\n", "\r\n", $body);
 901     } else {
 902         $body = ereg_replace("\n", "\r\n", $body);
 903         $length = sendSMTP($t, $c, $b, $subject, $body, $more_headers,
 904                            $session);
 905     }
 906     if (sqimap_mailbox_exists ($imap_stream, $sent_folder)) {
 907                 $headerlength = write822Header (FALSE, $t, $c, $b, $subject, $more_headers, $session, "\r\n");
 908                 $bodylength = writeBody(FALSE, $body, $session, "\r\n");
 909                 $length = $headerlength + $bodylength;
 910
 911         sqimap_append ($imap_stream, $sent_folder, $length);
 912         write822Header ($imap_stream, $t, $c, $b, $subject, $body, $more_headers,
 913                         $session);
 914         writeBody ($imap_stream, $body, $session);
 915         sqimap_append_done ($imap_stream);
 916     }
 917     sqimap_logout($imap_stream);
 918     /* Delete the files uploaded for attaching (if any).
 919      * only if $length != 0 (if there was no error)
 920      */
 921     if ($length) {
 922         ClearAttachments($session);
 923     }
 924
 925     return $length;
 926 }
 927
 928 function createPriorityHeaders($prio) {
 929     $prio_headers = Array();
 930     $prio_headers['X-Priority'] = $prio;
 931
 932     switch($prio) {
 933     case 1: $prio_headers['Importance'] = 'High';
 934         $prio_headers['X-MSMail-Priority'] = 'High';
 935         break;
 936
 937     case 3: $prio_headers['Importance'] = 'Normal';
 938         $prio_headers['X-MSMail-Priority'] = 'Normal';
 939         break;
 940
 941     case 5:
 942         $prio_headers['Importance'] = 'Low';
 943         $prio_headers['X-MSMail-Priority'] = 'Low';
 944         break;
 945     }
 946     return  $prio_headers;
 947 }
 948
 949 function createReceiptHeaders($receipt) {
 950
 951     GLOBAL $data_dir, $username, $identity, $popuser, $domain;
 952
 953     $receipt_headers = Array();
 954     if (isset($identity) && $identity != 'default') {
 955         $from = getPref($data_dir, $username, 'full_name' . $identity);
 956         $from_addr = getPref($data_dir, $username, 'email_address' . $identity);
 957     } else {
 958         $from = getPref($data_dir, $username, 'full_name');
 959         $from_addr = getPref($data_dir, $username, 'email_address');
 960     }
 961     if ($from_addr == '') {
 962         $from_addr = $popuser.'@'.$domain;
 963     }
 964
 965     if ($from == '') {
 966         $from = "<$from_addr>";
 967     }
 968     else {
 969         $from = '"' . encodeHeader($from) . "\" <$from_addr>";
 970     }
 971
 972     /* On Delivery */
 973     if ( $receipt == 1
 974         || $receipt == 3 ) {
 975         $receipt_headers["Return-Receipt-To"] = $from;
 976     }
 977     /* On Read */
 978     if ($receipt == 2
 979         || $receipt == 3 ) {
 980         /* Pegasus Mail */
 981         $receipt_headers["X-Confirm-Reading-To"] = $from;
 982         /* RFC 2298 */
 983         $receipt_headers["Disposition-Notification-To"] = $from;
 984     }
 985     return $receipt_headers;
 986 }
 987
 988 /* Figure out what the 'From:' address is
 989  */
 990
 991 function getFrom() {
 992     global $username, $popuser, $domain, $data_dir, $identity;
 993     if (isset($identity) && $identity != 'default') {
 994         $from_addr = getPref($data_dir, $username,
 995                              'email_address' . $identity);
 996     }
 997     else {
 998         $from_addr = getPref($data_dir, $username, 'email_address');
 999     }
1000
1001     if (!$from_addr) {
1002         $from_addr = "$popuser@$domain";
1003     }
1004     return $from_addr;
1005 }
1006
1007
1008 ?>