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", $checkdot = false) {
 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                     if ($checkdot) {
 156                         $checkdot_begin=true;
 157                     } else {
 158                         $checkdot_begin=false;
 159                     }
 160                     while ($tmp = fgets($file, 4096)) {
 161                         $tmp = str_replace("\r\n", "\n", $tmp);
 162                         $tmp = str_replace("\r", "\n", $tmp);
 163                         /* In order to remove the problem of users not able to create
 164                          * messages with "." on a blank line, RFC821 has made provision
 165                          * in section 4.5.2 (Transparency).
 166                          */
 167                         if ($tmp{0} == '.' && $checkdot_begin) {
 168                             $tmp = '.' . $tmp;
 169                         }
 170                         if ($checkdot) {
 171                             $tmp = str_replace("\n.","\n..",$tmp);
 172                         }
 173
 174                         if ($rn == "\r\n"){
 175                             $tmp = str_replace("\n", "\r\n", $tmp);
 176                         }
 177                         $tmp_length = strlen($tmp);
 178                         if ($tmp{$tmp_length-1} == "\n" && $checkdot) {
 179                             $checkdot_begin = true;
 180                         } else {
 181                             $checkdot_begin = false;
 182                         }
 183                         if ($fp) {
 184                            fputs($fp, $tmp);
 185                         }
 186                         $length += strlen($tmp_length);
 187                     }
 188
 189                     if (substr($tmp, strlen($tmp) - strlen($rn), strlen($rn)) != $rn) {
 190                         if ($fp) {
 191                             fputs($fp, $rn);
 192                         }
 193                     }
 194                 } else {
 195                     $header .= "Content-Transfer-Encoding: base64"
 196                         . "$rn" . "$rn";
 197                     if ($fp) fputs ($fp, $header);
 198                     $length += strlen($header);
 199                     while ($tmp = fread($file, 570)) {
 200                         $encoded = chunk_split(base64_encode($tmp));
 201                         $length += strlen($encoded);
 202                         if ($fp) fputs ($fp, $encoded);
 203                     }
 204                 }
 205                 fclose ($file);
 206             }
 207         }
 208     }
 209     return $length;
 210 }
 211
 212 /* Delete files that are uploaded for attaching
 213  */
 214 function deleteAttachments($session) {
 215     global $username, $attachments, $attachment_dir, $data_dir;
 216     $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
 217
 218     $rem_attachments = array();
 219     foreach ($attachments as $info) {
 220         if ($info['session'] == $session) {
 221             $attached_file = "$hashed_attachment_dir/$info[localfilename]";
 222             if (file_exists($attached_file)) {
 223                 unlink($attached_file);
 224             }
 225         } else {
 226             $rem_attachments[] = $info;
 227         }
 228     }
 229     $attachments = $rem_attachments;
 230     setPref($data_dir, $username, 'attachments', serialize($attachments));
 231 }
 232
 233 /* Return a nice MIME-boundary
 234  */
 235 function mimeBoundary () {
 236     static $mimeBoundaryString;
 237
 238     if ( !isset( $mimeBoundaryString ) ||
 239          $mimeBoundaryString == '') {
 240         $mimeBoundaryString = '----=_' . date( 'YmdHis' ) . '_' .
 241             mt_rand( 10000, 99999 );
 242     }
 243
 244     return $mimeBoundaryString;
 245 }
 246
 247 /* Time offset for correct timezone */
 248 function timezone () {
 249     global $invert_time;
 250
 251     $diff_second = date('Z');
 252     if ($invert_time) {
 253         $diff_second = - $diff_second;
 254     }
 255     if ($diff_second > 0) {
 256         $sign = '+';
 257     }
 258     else {
 259         $sign = '-';
 260     }
 261
 262     $diff_second = abs($diff_second);
 263
 264     $diff_hour = floor ($diff_second / 3600);
 265     $diff_minute = floor (($diff_second-3600*$diff_hour) / 60);
 266
 267     $zonename = '('.strftime('%Z').')';
 268     $result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute,
 269                        $zonename);
 270     return ($result);
 271 }
 272
 273 /* Print all the needed RFC822 headers */
 274 function write822Header ($fp, $t, $c, $b, $subject, $body, $more_headers, $session, $rn="\r\n") {
 275     global $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT;
 276     global $data_dir, $username, $popuser, $domain, $version, $useSendmail;
 277     global $default_charset, $HTTP_VIA, $HTTP_X_FORWARDED_FOR;
 278     global $REMOTE_HOST, $identity;
 279
 280     /* Storing the header to make sure the header is the same
 281      * everytime the header is printed.
 282      */
 283     static $header, $headerlength, $headerrn;
 284
 285     if ($header == '') {
 286                 $headerrn = $rn;
 287         $to = expandAddrs(parseAddrs($t));
 288         $cc = expandAddrs(parseAddrs($c));
 289         $bcc = expandAddrs(parseAddrs($b));
 290         if (isset($identity) && $identity != 'default') {
 291             $reply_to = getPref($data_dir, $username, 'reply_to' . $identity);
 292             $from = getPref($data_dir, $username, 'full_name' . $identity);
 293             $from_addr = getFrom();
 294         } else {
 295             $reply_to = getPref($data_dir, $username, 'reply_to');
 296             $from = getPref($data_dir, $username, 'full_name');
 297             $from_addr = getFrom();
 298         }
 299
 300         $to_list = getLineOfAddrs($to);
 301         $cc_list = getLineOfAddrs($cc);
 302         $bcc_list = getLineOfAddrs($bcc);
 303
 304         /* Encoding 8-bit characters and making from line */
 305         $subject = encodeHeader($subject);
 306         if ($from == '') {
 307             $from = "<$from_addr>";
 308         }
 309         else {
 310             $from = '"' . encodeHeader($from) . "\" <$from_addr>";
 311         }
 312
 313         /* This creates an RFC 822 date */
 314         $date = date("D, j M Y H:i:s ", mktime()) . timezone();
 315
 316         /* Create a message-id */
 317         $message_id = '<' . $REMOTE_PORT . '.' . $REMOTE_ADDR . '.';
 318         $message_id .= time() . '.squirrel@' . $SERVER_NAME .'>';
 319
 320         /* Make an RFC822 Received: line */
 321         if (isset($REMOTE_HOST)) {
 322             $received_from = "$REMOTE_HOST ([$REMOTE_ADDR])";
 323         }
 324         else {
 325             $received_from = $REMOTE_ADDR;
 326         }
 327
 328         if (isset($HTTP_VIA) || isset ($HTTP_X_FORWARDED_FOR)) {
 329             if ($HTTP_X_FORWARDED_FOR == '') {
 330                 $HTTP_X_FORWARDED_FOR = 'unknown';
 331             }
 332             $received_from .= " (proxying for $HTTP_X_FORWARDED_FOR)";
 333         }
 334
 335         $header  = "Received: from $received_from" . $rn;
 336         $header .= "        (SquirrelMail authenticated user $username)" . $rn;
 337         $header .= "        by $SERVER_NAME with HTTP;" . $rn;
 338         $header .= "        $date" . $rn;
 339
 340         /* Insert the rest of the header fields */
 341         $header .= "Message-ID: $message_id" . $rn;
 342         $header .= "Date: $date" . $rn;
 343         $header .= "Subject: $subject" . $rn;
 344         $header .= "From: $from" . $rn;
 345         $header .= "To: $to_list" . $rn;    // Who it's TO
 346
 347         if (isset($more_headers["Content-Type"])) {
 348             $contentType = $more_headers["Content-Type"];
 349             unset($more_headers["Content-Type"]);
 350         }
 351         else {
 352             if (isMultipart($session)) {
 353                 $contentType = "multipart/mixed;";
 354             }
 355             else {
 356                 if ($default_charset != '') {
 357                     $contentType = 'text/plain; charset='.$default_charset;
 358                 }
 359                 else {
 360                     $contentType = 'text/plain;';
 361                 }
 362             }
 363         }
 364
 365         /* Insert headers from the $more_headers array */
 366         if(is_array($more_headers)) {
 367             reset($more_headers);
 368             while(list($h_name, $h_val) = each($more_headers)) {
 369                 if ($h_name == 'References') {
 370                     $h_val = str_replace(' ', "$rn        ", $h_val);
 371                 }
 372                 $header .= sprintf("%s: %s%s", $h_name, $h_val, $rn);
 373             }
 374         }
 375
 376         if ($cc_list) {
 377             $header .= "Cc: $cc_list" . $rn; // Who the CCs are
 378         }
 379
 380         if ($reply_to != '') {
 381             $header .= "Reply-To: $reply_to" . $rn;
 382         }
 383
 384         if ($useSendmail) {
 385             if ($bcc_list) {
 386                 // BCCs is removed from header by sendmail
 387                 $header .= "Bcc: $bcc_list" . $rn;
 388             }
 389         }
 390
 391         /* Identify SquirrelMail */
 392         $header .= "X-Mailer: SquirrelMail (version $version)" . $rn;
 393
 394         /* Do the MIME-stuff */
 395         $header .= "MIME-Version: 1.0" . $rn;
 396
 397         if (isMultipart($session)) {
 398             $header .= 'Content-Type: '.$contentType.' boundary="';
 399             $header .= mimeBoundary();
 400             $header .= "\"$rn";
 401         } else {
 402             if (strtolower($default_charset) == 'iso-2022-jp') {
 403                 if (mb_detect_encoding($body) == 'ASCII') {
 404                     $header .= 'Content-Type: text/plain; US-ASCII' . $rn;
 405                     $header .= "Content-Transfer-Encoding: 8bit" . $rn;
 406                 } else {
 407                     $header .= 'Content-Type: '.$contentType . $rn;
 408                     $header .= "Content-Transfer-Encoding: 7bit" . $rn;
 409                 }
 410             } else {
 411             $header .= 'Content-Type: ' . $contentType . $rn;
 412             $header .= "Content-Transfer-Encoding: 8bit" . $rn;
 413         }
 414         }
 415         $header .= $rn; // One blank line to separate header and body
 416
 417         $headerlength = strlen($header);
 418     }
 419
 420         if ($headerrn != $rn) {
 421                 $header = str_replace($headerrn, $rn, $header);
 422         $headerlength = strlen($header);
 423                 $headerrn = $rn;
 424         }
 425
 426     /* Write the header */
 427     if ($fp) fputs ($fp, $header);
 428
 429     return $headerlength;
 430 }
 431
 432 /* Send the body
 433  */
 434 function writeBody ($fp, $passedBody, $session, $rn="\r\n", $checkdot = false) {
 435     global $default_charset;
 436
 437     $attachmentlength = 0;
 438
 439     if (isMultipart($session)) {
 440         $body = '--'.mimeBoundary() . $rn;
 441
 442         if ($default_charset != "") {
 443             $body .= "Content-Type: text/plain; charset=$default_charset".$rn;
 444         }
 445         else {
 446             $body .= "Content-Type: text/plain" . $rn;
 447         }
 448
 449         if (strtolower($default_charset) == 'iso-2022-jp') {
 450             if (mb_detect_encoding($passedBody) == 'ASCII') {
 451                 $body .= "Content-Transfer-Encoding: 8bit" . $rn . $rn .
 452                          $passedBody . $rn . $rn;
 453             } else {
 454                 $body .= "Content-Transfer-Encoding: 7bit\r\n\r\n" .
 455                          mb_convert_encoding($passedBody, 'JIS') . "\r\n\r\n";
 456             }
 457         } else {
 458         $body .= "Content-Transfer-Encoding: 8bit" . $rn . $rn .
 459                  $passedBody . $rn . $rn;
 460         }
 461         if ($fp) {
 462             fputs ($fp, $body);
 463         }
 464
 465         $attachmentlength = attachFiles($fp, $session, $rn, $checkdot);
 466
 467         if (!isset($postbody)) {
 468             $postbody = "";
 469         }
 470         $postbody .= $rn . "--" . mimeBoundary() . "--" . $rn . $rn;
 471         if ($fp) fputs ($fp, $postbody);
 472     } else {
 473         if (strtolower($default_charset) == 'iso-2022-jp') {
 474             $body = mb_convert_encoding($passedBody, 'JIS') . $rn;
 475         } else {
 476             $body = $passedBody . $rn;
 477         }
 478         if ($fp) {
 479             fputs ($fp, $body);
 480         }
 481         $postbody = $rn;
 482         if ($fp) {
 483             fputs ($fp, $postbody);
 484         }
 485     }
 486
 487     return (strlen($body) + strlen($postbody) + $attachmentlength);
 488 }
 489
 490 /* Send mail using the sendmail command
 491  */
 492 function sendSendmail($t, $c, $b, $subject, $body, $more_headers, $session) {
 493     global $sendmail_path, $popuser, $username, $domain;
 494
 495     /* Build envelope sender address. Make sure it doesn't contain
 496      * spaces or other "weird" chars that would allow a user to
 497      * exploit the shell/pipe it is used in.
 498      */
 499     $envelopefrom = getFrom();
 500     $envelopefrom = ereg_replace("[[:blank:]]",'', $envelopefrom);
 501     $envelopefrom = ereg_replace("[[:space:]]",'', $envelopefrom);
 502     $envelopefrom = ereg_replace("[[:cntrl:]]",'', $envelopefrom);
 503
 504     /**
 505      * open pipe to sendmail or qmail-inject
 506      * (qmail-inject doesn't accept -t param)
 507      */
 508     if (strstr($sendmail_path, "qmail-inject")) {
 509         $fp = popen (escapeshellcmd("$sendmail_path -f$envelopefrom"), "w");
 510     } else {
 511         $fp = popen (escapeshellcmd("$sendmail_path -t -f$envelopefrom"), "w");
 512     }
 513
 514     $headerlength = write822Header ($fp, $t, $c, $b, $subject, $body,
 515                                     $more_headers, $session, "\n");
 516     $bodylength = writeBody($fp, $body, $session, "\n", true);
 517
 518     pclose($fp);
 519
 520     return ($headerlength + $bodylength);
 521 }
 522
 523 function smtpReadData($smtpConnection) {
 524     $read = fgets($smtpConnection, 1024);
 525     $counter = 0;
 526     while ($read) {
 527         echo $read . '<BR>';
 528         $data[$counter] = $read;
 529         $read = fgets($smtpConnection, 1024);
 530         $counter++;
 531     }
 532 }
 533
 534 function sendSMTP($t, $c, $b, $subject, $body, $more_headers, $session) {
 535     global $username, $popuser, $domain, $version, $smtpServerAddress,
 536         $smtpPort, $data_dir, $color, $use_authenticated_smtp, $identity,
 537         $key, $onetimepad;
 538
 539     $to = expandRcptAddrs(parseAddrs($t));
 540     $cc = expandRcptAddrs(parseAddrs($c));
 541     $bcc = expandRcptAddrs(parseAddrs($b));
 542     if (isset($identity) && $identity != 'default') {
 543         $from_addr = getPref($data_dir, $username,
 544                              'email_address' . $identity);
 545     }
 546     else {
 547         $from_addr = getPref($data_dir, $username, 'email_address');
 548     }
 549
 550     if (!$from_addr) {
 551         $from_addr = "$popuser@$domain";
 552     }
 553
 554     /* POP3 BEFORE SMTP CODE HERE */
 555     global $pop_before_smtp;
 556     if (isset($pop_before_smtp) && $pop_before_smtp === true) {
 557         if (!isset($pop_port)) {
 558             $pop_port = 110;
 559         }
 560         if (!isset($pop_server)) {
 561             $pop_server = $smtpServerAddress; /* usually the same host! */
 562         }
 563         $popConnection = fsockopen($pop_server, $pop_port, $err_no, $err_str);
 564         if (!$popConnection) {
 565             error_log("Error connecting to POP Server ($pop_server:$pop_port)"
 566                   . " $err_no : $err_str");
 567         } else {
 568             $tmp = fgets($popConnection, 1024); /* banner */
 569             if (!eregi("^\+OK", $tmp, $regs)) {
 570                 return(0);
 571             }
 572             fputs($popConnection, "USER $username\r\n");
 573             $tmp = fgets($popConnection, 1024);
 574             if (!eregi("^\+OK", $tmp, $regs)) {
 575                 return(0);
 576             }
 577             fputs($popConnection, 'PASS ' . OneTimePadDecrypt($key, $onetimepad) . "\r\n");
 578             $tmp = fgets($popConnection, 1024);
 579             if (!eregi("^\+OK", $tmp, $regs)) {
 580                 return(0);
 581             }
 582             fputs($popConnection, "QUIT\r\n"); /* log off */
 583             fclose($popConnection);
 584         }
 585     }
 586
 587     $smtpConnection = fsockopen($smtpServerAddress, $smtpPort,
 588                                 $errorNumber, $errorString);
 589     if (!$smtpConnection) {
 590         echo 'Error connecting to SMTP Server.<br>';
 591         echo "$errorNumber : $errorString<br>";
 592         exit;
 593     }
 594     $tmp = fgets($smtpConnection, 1024);
 595     if (errorCheck($tmp, $smtpConnection)!=5) {
 596         return(0);
 597     }
 598
 599     $to_list = getLineOfAddrs($to);
 600     $cc_list = getLineOfAddrs($cc);
 601
 602     /* Lets introduce ourselves */
 603     if (! isset ($use_authenticated_smtp)
 604         || $use_authenticated_smtp == false) {
 605         fputs($smtpConnection, "HELO $domain\r\n");
 606         $tmp = fgets($smtpConnection, 1024);
 607         if (errorCheck($tmp, $smtpConnection)!=5) return(0);
 608     } else {
 609         fputs($smtpConnection, "EHLO $domain\r\n");
 610         $tmp = fgets($smtpConnection, 1024);
 611         if (errorCheck($tmp, $smtpConnection)!=5) return(0);
 612
 613         fputs($smtpConnection, "AUTH LOGIN\r\n");
 614         $tmp = fgets($smtpConnection, 1024);
 615         if (errorCheck($tmp, $smtpConnection)!=5) {
 616             return(0);
 617         }
 618
 619         fputs($smtpConnection, base64_encode ($username) . "\r\n");
 620         $tmp = fgets($smtpConnection, 1024);
 621         if (errorCheck($tmp, $smtpConnection)!=5) {
 622             return(0);
 623         }
 624
 625         fputs($smtpConnection, base64_encode
 626               (OneTimePadDecrypt($key, $onetimepad)) . "\r\n");
 627         $tmp = fgets($smtpConnection, 1024);
 628         if (errorCheck($tmp, $smtpConnection)!=5) {
 629             return(0);
 630         }
 631     }
 632
 633     /* Ok, who is sending the message? */
 634     fputs($smtpConnection, "MAIL FROM: <$from_addr>\r\n");
 635     $tmp = fgets($smtpConnection, 1024);
 636     if (errorCheck($tmp, $smtpConnection)!=5) {
 637         return(0);
 638     }
 639
 640     /* send who the recipients are */
 641     for ($i = 0; $i < count($to); $i++) {
 642         fputs($smtpConnection, "RCPT TO: $to[$i]\r\n");
 643         $tmp = fgets($smtpConnection, 1024);
 644         if (errorCheck($tmp, $smtpConnection)!=5) {
 645             return(0);
 646         }
 647     }
 648     for ($i = 0; $i < count($cc); $i++) {
 649         fputs($smtpConnection, "RCPT TO: $cc[$i]\r\n");
 650         $tmp = fgets($smtpConnection, 1024);
 651         if (errorCheck($tmp, $smtpConnection)!=5) {
 652             return(0);
 653         }
 654     }
 655     for ($i = 0; $i < count($bcc); $i++) {
 656         fputs($smtpConnection, "RCPT TO: $bcc[$i]\r\n");
 657         $tmp = fgets($smtpConnection, 1024);
 658         if (errorCheck($tmp, $smtpConnection)!=5) {
 659             return(0);
 660         }
 661     }
 662
 663     /* Lets start sending the actual message */
 664     fputs($smtpConnection, "DATA\r\n");
 665     $tmp = fgets($smtpConnection, 1024);
 666     if (errorCheck($tmp, $smtpConnection)!=5) {
 667         return(0);
 668     }
 669
 670     /* Send the message */
 671     $headerlength = write822Header ($smtpConnection, $t, $c, $b,
 672                                     $subject, $body, $more_headers, $session);
 673     $bodylength = writeBody($smtpConnection, $body, $session, "\r\n", true);
 674
 675     fputs($smtpConnection, ".\r\n"); /* end the DATA part */
 676     $tmp = fgets($smtpConnection, 1024);
 677     $num = errorCheck($tmp, $smtpConnection, true);
 678     if ($num != 250) {
 679         return(0);
 680     }
 681
 682     fputs($smtpConnection, "QUIT\r\n"); /* log off */
 683
 684     fclose($smtpConnection);
 685
 686     return ($headerlength + $bodylength);
 687 }
 688
 689
 690 function errorCheck($line, $smtpConnection, $verbose = false) {
 691     global $color, $compose_new_win;
 692
 693     /* Read new lines on a multiline response */
 694     $lines = $line;
 695     while(ereg("^[0-9]+-", $line)) {
 696         $line = fgets($smtpConnection, 1024);
 697         $lines .= $line;
 698     }
 699
 700     /* Status:  0 = fatal
 701      *          5 = ok
 702      */
 703     $err_num = substr($line, 0, strpos($line, " "));
 704     switch ($err_num) {
 705     case 500:   $message = 'Syntax error; command not recognized';
 706         $status = 0;
 707         break;
 708     case 501:   $message = 'Syntax error in parameters or arguments';
 709         $status = 0;
 710         break;
 711     case 502:   $message = 'Command not implemented';
 712         $status = 0;
 713         break;
 714     case 503:   $message = 'Bad sequence of commands';
 715         $status = 0;
 716         break;
 717     case 504:   $message = 'Command parameter not implemented';
 718         $status = 0;
 719         break;
 720
 721     case 211:   $message = 'System status, or system help reply';
 722         $status = 5;
 723         break;
 724     case 214:   $message = 'Help message';
 725         $status = 5;
 726         break;
 727
 728     case 220:   $message = 'Service ready';
 729         $status = 5;
 730         break;
 731     case 221:   $message = 'Service closing transmission channel';
 732         $status = 5;
 733         break;
 734
 735     case 421:   $message = 'Service not available, closing chanel';
 736         $status = 0;
 737         break;
 738
 739     case 235:   return(5);
 740         break;
 741     case 250:   $message = 'Requested mail action okay, completed';
 742         $status = 5;
 743         break;
 744     case 251:   $message = 'User not local; will forward';
 745         $status = 5;
 746         break;
 747     case 334:   return(5); break;
 748     case 450:   $message = 'Requested mail action not taken:  mailbox unavailable';
 749         $status = 0;
 750         break;
 751     case 550:   $message = 'Requested action not taken:  mailbox unavailable';
 752         $status = 0;
 753         break;
 754     case 451:   $message = 'Requested action aborted:  error in processing';
 755         $status = 0;
 756         break;
 757     case 551:   $message = 'User not local; please try forwarding';
 758         $status = 0;
 759         break;
 760     case 452:   $message = 'Requested action not taken:  insufficient system storage';
 761         $status = 0;
 762         break;
 763     case 552:   $message = 'Requested mail action aborted:  exceeding storage allocation';
 764         $status = 0;
 765         break;
 766     case 553:   $message = 'Requested action not taken: mailbox name not allowed';
 767         $status = 0;
 768         break;
 769     case 354:   $message = 'Start mail input; end with .';
 770         $status = 5;
 771         break;
 772     case 554:   $message = 'Transaction failed';
 773         $status = 0;
 774         break;
 775     default:    $message = 'Unknown response: '. nl2br(htmlspecialchars($lines));
 776         $status = 0;
 777         $error_num = '001';
 778         break;
 779     }
 780
 781     if ($status == 0) {
 782         include_once('../functions/page_header.php');
 783         if ($compose_new_win == '1') {
 784             compose_Header($color, 'None');
 785         }
 786         else {
 787             displayPageHeader($color, 'None');
 788         }
 789         include_once('../functions/display_messages.php');
 790         $lines = nl2br(htmlspecialchars($lines));
 791         $msg  = $message . "<br>\nServer replied: $lines";
 792         plain_error_message($msg, $color);
 793     }
 794     if (! $verbose) return $status;
 795     return $err_num;
 796 }
 797
 798 /* create new reference header per rfc2822 */
 799
 800 function calculate_references($refs, $inreplyto, $old_reply_to) {
 801
 802     $refer = "";
 803     for ($i=1;$i<count($refs[0]);$i++) {
 804         if (!empty($refs[0][$i])) {
 805             if (preg_match("/^References:(.+)$/UA", $refs[0][$i], $regs)) {
 806                 $refer = trim($regs[1]);
 807             }
 808             else {
 809                $refer .= ' ' . trim($refs[0][$i]);
 810             }
 811
 812         }
 813     }
 814     $refer_a = explode(' ', $refer);
 815     $refer = '';
 816     foreach ($refer_a as $ref) {
 817        $ref = trim($ref);
 818        if ($ref{0} == '<' && $ref{(strlen($ref)-1)} == '>') {
 819           $refer .= $ref . ' ';
 820        }
 821     }
 822     $refer = trim($refer);
 823     if (strlen($refer) > 2) {
 824         $refer .= ' ' . $inreplyto;
 825     }
 826     else {
 827         if (!empty($old_reply_to)) {
 828             $refer .= $old_reply_to . ' ' . $inreplyto;
 829         }
 830         else {
 831             $refer .= $inreplyto;
 832         }
 833     }
 834     trim($refer);
 835     return $refer;
 836 }
 837
 838 function sendMessage($t, $c, $b, $subject, $body, $reply_id, $MDN,
 839                      $prio = 3, $session) {
 840     global $useSendmail, $msg_id, $is_reply, $mailbox, $onetimepad,
 841         $data_dir, $username, $domain, $key, $version, $sent_folder,
 842         $imapServerAddress, $imapPort, $default_use_priority, $more_headers,
 843         $request_mdn, $request_dr, $uid_support;
 844
 845     $more_headers = Array();
 846
 847     do_hook('smtp_send');
 848
 849     $imap_stream = sqimap_login($username, $key, $imapServerAddress,
 850                                 $imapPort, 1);
 851
 852     if (isset($reply_id) && $reply_id) {
 853         sqimap_mailbox_select ($imap_stream, $mailbox);
 854         sqimap_messages_flag ($imap_stream, $reply_id, $reply_id, 'Answered', false);
 855
 856         /* Insert In-Reply-To and References headers if the
 857          * message-id of the message we reply to is set (longer than "<>")
 858          * The References header should really be the old Referenced header
 859          * with the message ID appended, and now it is (jmunro)
 860          */
 861         $sid = sqimap_session_id($uid_support);
 862         $query = "$sid FETCH $reply_id (BODY.PEEK[HEADER.FIELDS (Message-Id In-Reply-To)])\r\n";
 863         fputs ($imap_stream, $query);
 864         $read = sqimap_read_data($imap_stream, $sid, true, $response, $message);
 865         $message_id = '';
 866         $in_reply_to = '';
 867
 868         foreach ($read as $r) {
 869                 if (preg_match("/^message-id:(.*)/iA", $r, $regs)) {
 870                     $message_id = trim($regs[1]);
 871                 }
 872                 if (preg_match("/^in-reply-to:(.*)/iA", $r, $regs)) {
 873                     $in_reply_to = trim($regs[1]);
 874                 }
 875         }
 876
 877         if(strlen($message_id) > 2) {
 878             $refs = get_reference_header ($imap_stream, $reply_id);
 879             $inreplyto = $message_id;
 880             $old_reply_to = $in_reply_to;
 881             $refer = calculate_references ($refs, $inreplyto, $old_reply_to);
 882             $more_headers['In-Reply-To'] = $inreplyto;
 883             $more_headers['References']  = $refer;
 884         }
 885
 886     }
 887     if ($default_use_priority) {
 888         $more_headers = array_merge($more_headers, createPriorityHeaders($prio));
 889     }
 890
 891     $requestRecipt = 0;
 892     if (isset($request_dr)) {
 893         $requestRecipt += 1;
 894     }
 895     if (isset($request_mdn)) {
 896         $requestRecipt += 2;
 897     }
 898     if ( $requestRecipt > 0) {
 899         $more_headers = array_merge($more_headers, createReceiptHeaders($requestRecipt));
 900     }
 901
 902     /* this is to catch all plain \n instances and
 903      * replace them with \r\n.  All newlines were converted
 904      * into just \n inside the compose.php file.
 905      * But only if delimiter is, in fact, \r\n.
 906      */
 907
 908     if ($MDN) {
 909         $more_headers["Content-Type"] = "multipart/report; ".
 910             "report-type=disposition-notification;";
 911     }
 912
 913     if ($useSendmail) {
 914         /* In order to remove the problem of users not able to create
 915          * messages with "." on a blank line, RFC821 has made provision
 916          * in section 4.5.2 (Transparency).
 917          */
 918          $body_sendmail = $body;
 919          if (($body_sendmail{0} == '.')) {
 920              $body_sendmail = '.' . $body_sendmail;
 921          }
 922          $body_sendmail = str_replace("\n.","\n..",$body_sendmail);
 923
 924          $length = sendSendmail($t, $c, $b, $subject, $body_sendmail, $more_headers,
 925                                $session);
 926          $body = ereg_replace("\n", "\r\n", $body);
 927     } else {
 928          $body = ereg_replace("\n", "\r\n", $body);
 929         /* In order to remove the problem of users not able to create
 930          * messages with "." on a blank line, RFC821 has made provision
 931          * in section 4.5.2 (Transparency).
 932          */
 933          $body_smtp = $body;
 934          if (($body_smtp{0} == '.')) {
 935              $body_smtp = '.' . $body_smtp;
 936          }
 937          $body_smtp = str_replace("\n.","\n..",$body_smtp);
 938
 939
 940          $length = sendSMTP($t, $c, $b, $subject, $body_smtp, $more_headers,
 941                            $session);
 942     }
 943     if (sqimap_mailbox_exists ($imap_stream, $sent_folder)) {
 944                 $headerlength = write822Header (false, $t, $c, $b, $subject, $more_headers, $session, "\r\n");
 945                 $bodylength = writeBody(false, $body, $session, "\r\n");
 946                 $length = $headerlength + $bodylength;
 947
 948         sqimap_append ($imap_stream, $sent_folder, $length);
 949         write822Header ($imap_stream, $t, $c, $b, $subject, $body, $more_headers,
 950                         $session);
 951         writeBody ($imap_stream, $body, $session);
 952         sqimap_append_done ($imap_stream);
 953     }
 954     sqimap_logout($imap_stream);
 955     /* Delete the files uploaded for attaching (if any).
 956      * only if $length != 0 (if there was no error)
 957      */
 958     if ($length) {
 959         ClearAttachments($session);
 960     }
 961
 962     return $length;
 963 }
 964
 965 function createPriorityHeaders($prio) {
 966     $prio_headers = Array();
 967     $prio_headers['X-Priority'] = $prio;
 968
 969     switch($prio) {
 970     case 1: $prio_headers['Importance'] = 'High';
 971         $prio_headers['X-MSMail-Priority'] = 'High';
 972         break;
 973
 974     case 3: $prio_headers['Importance'] = 'Normal';
 975         $prio_headers['X-MSMail-Priority'] = 'Normal';
 976         break;
 977
 978     case 5:
 979         $prio_headers['Importance'] = 'Low';
 980         $prio_headers['X-MSMail-Priority'] = 'Low';
 981         break;
 982     }
 983     return  $prio_headers;
 984 }
 985
 986 function createReceiptHeaders($receipt) {
 987
 988     GLOBAL $data_dir, $username, $identity, $popuser, $domain;
 989
 990     $receipt_headers = Array();
 991     if (isset($identity) && $identity != 'default') {
 992         $from = getPref($data_dir, $username, 'full_name' . $identity);
 993         $from_addr = getPref($data_dir, $username, 'email_address' . $identity);
 994     } else {
 995         $from = getPref($data_dir, $username, 'full_name');
 996         $from_addr = getPref($data_dir, $username, 'email_address');
 997     }
 998     if ($from_addr == '') {
 999         $from_addr = $popuser.'@'.$domain;
1000     }
1001
1002     if ($from == '') {
1003         $from = "<$from_addr>";
1004     }
1005     else {
1006         $from = '"' . encodeHeader($from) . "\" <$from_addr>";
1007     }
1008
1009     /* On Delivery */
1010     if ( $receipt == 1
1011         || $receipt == 3 ) {
1012         $receipt_headers["Return-Receipt-To"] = $from;
1013     }
1014     /* On Read */
1015     if ($receipt == 2
1016         || $receipt == 3 ) {
1017         /* Pegasus Mail */
1018         $receipt_headers["X-Confirm-Reading-To"] = $from;
1019         /* RFC 2298 */
1020         $receipt_headers["Disposition-Notification-To"] = $from;
1021     }
1022     return $receipt_headers;
1023 }
1024
1025 /* Figure out what the 'From:' address is
1026  */
1027
1028 function getFrom() {
1029     global $username, $popuser, $domain, $data_dir, $identity;
1030     if (isset($identity) && $identity != 'default') {
1031         $from_addr = getPref($data_dir, $username,
1032                              'email_address' . $identity);
1033     }
1034     else {
1035         $from_addr = getPref($data_dir, $username, 'email_address');
1036     }
1037
1038     if (!$from_addr) {
1039         $from_addr = "$popuser@$domain";
1040     }
1041     return $from_addr;
1042 }
1043
1044
1045 ?>