functions/smtp.php

   1 <?
   2    /** smtp.php
   3     **
   4     ** This contains all the functions needed to send messages through
   5     ** an smtp server or sendmail.
   6     **/
   7
   8    $smtp_php = true;
   9
  10    // Returns true only if this message is multipart
  11    function isMultipart () {
  12       global $attachments;
  13
  14       if (count($attachments)>0)
  15          return true;
  16       else
  17          return false;
  18    }
  19
  20    // Attach the files that are due to be attached
  21    function attachFiles ($fp) {
  22       global $attachments, $attachment_dir;
  23
  24       $length = 0;
  25
  26       if (isMultipart()) {
  27          reset($attachments);
  28          while (list($localname, $remotename) = each($attachments)) {
  29             // This is to make sure noone is giving a filename in another
  30             // directory
  31             $localname = ereg_replace ("\\/", "", $localname);
  32
  33             $fileinfo = fopen ($attachment_dir.$localname.".info", "r");
  34             $filetype = fgets ($fileinfo, 8192);
  35             fclose ($fileinfo);
  36             $filetype = trim ($filetype);
  37             if ($filetype=="")
  38                $filetype = "application/octet-stream";
  39
  40             $header = "--".mimeBoundary()."\r\n";
  41             $header .= "Content-Type: $filetype\n";
  42             $header .= "Content-Disposition: attachment; filename=\"$remotename\"\r\n";
  43             $header .= "Content-Transfer-Encoding: base64\r\n\r\n";
  44             fputs ($fp, $header);
  45             $length += strlen($header);
  46
  47             $file = fopen ($attachment_dir.$localname, "r");
  48             while ($tmp = fread($file, 570)) {
  49                $encoded = chunk_split(base64_encode($tmp));
  50                $length += strlen($encoded);
  51                fputs ($fp, $encoded);
  52             }
  53             fclose ($file);
  54          }
  55       }
  56
  57       return $length;
  58    }
  59
  60    // Delete files that are uploaded for attaching
  61    function deleteAttachments() {
  62       global $attachments, $attachment_dir;
  63
  64       if (isMultipart()) {
  65          reset($attachments);
  66          while (list($localname, $remotename) = each($attachments)) {
  67             if (!ereg ("\\/", $localname)) {
  68                unlink ($attachment_dir.$localname);
  69                unlink ($attachment_dir.$localname.".info");
  70             }
  71          }
  72       }
  73    }
  74
  75    // Return a nice MIME-boundary
  76    function mimeBoundary () {
  77       global $version, $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT;
  78
  79       static $mimeBoundaryString;
  80
  81       if ($mimeBoundaryString == "") {
  82          $temp = "SquirrelMail".$version.$REMOTE_ADDR.$SERVER_NAME.
  83             $REMOTE_PORT;
  84          $mimeBoundaryString = "=-_+".substr(md5($temp),1,20);
  85       }
  86
  87       return $mimeBoundaryString;
  88    }
  89
  90    /* Time offset for correct timezone */
  91    function timezone () {
  92       $diff_second = date("Z");
  93       if ($diff_second > 0)
  94          $sign = "+";
  95       else
  96          $sign = "-";
  97
  98       $diff_second = abs($diff_second);
  99
 100       $diff_hour = floor ($diff_second / 3600);
 101       $diff_minute = floor (($diff_second-3600*$diff_hour) / 60);
 102
 103       $zonename = "(".strftime("%Z").")";
 104       $result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute, $zonename);
 105       return ($result);
 106    }
 107
 108    /* Print all the needed RFC822 headers */
 109    function write822Header ($fp, $t, $c, $b, $subject) {
 110       global $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT;
 111       global $data_dir, $username, $domain, $version, $useSendmail;
 112
 113       // Storing the header to make sure the header is the same
 114       // everytime the header is printed.
 115       static $header, $headerlength;
 116
 117       if ($header == "") {
 118          $to = parseAddrs($t);
 119          $cc = parseAddrs($c);
 120          $bcc = parseAddrs($b);
 121          $reply_to = getPref($data_dir, $username, "reply_to");
 122          $from = getPref($data_dir, $username, "full_name");
 123          $from_addr = getPref($data_dir, $username, "email_address");
 124
 125          if ($from_addr == "")
 126             $from_addr = "$username@$domain";
 127
 128          $to_list = getLineOfAddrs($to);
 129          $cc_list = getLineOfAddrs($cc);
 130          $bcc_list = getLineOfAddrs($bcc);
 131
 132          if ($from == "")
 133             $from = "<$from_addr>";
 134          else
 135             $from = $from . " <$from_addr>";
 136
 137          /* This creates an RFC 822 date */
 138          $date = date("D, j M Y H:i:s ", mktime()) . timezone();
 139
 140          /* Create a message-id */
 141          $message_id = "<" . $REMOTE_PORT . "." . $REMOTE_ADDR . ".";
 142          $message_id .= time() . "@" . $SERVER_NAME .">";
 143
 144          /* Make an RFC822 Received: line */
 145          $header = "Received: from $REMOTE_ADDR by $SERVER_NAME with HTTP; ";
 146          $header .= "$date\n";
 147
 148          /* Insert the rest of the header fields */
 149          $header .= "Message-ID: $message_id\r\n";
 150          $header .= "Date: $date\r\n";
 151          $header .= "Subject: $subject\r\n";
 152          $header .= "From: $from\r\n";
 153          $header .= "To: $to_list \r\n";    // Who it's TO
 154
 155          if ($cc_list) {
 156             $header .= "Cc: $cc_list\r\n"; // Who the CCs are
 157          }
 158
 159          if ($reply_to != "")
 160             $header .= "Reply-To: $reply_to\r\n";
 161
 162          if ($useSendmail) {
 163             if ($bcc_list) {
 164                // BCCs is removed from header by sendmail
 165                $header .= "Bcc: $bcc_list\r\n";
 166             }
 167          }
 168
 169          $header .= "X-Mailer: SquirrelMail (version $version)\r\n"; // Identify SquirrelMail
 170
 171          // Do the MIME-stuff
 172          $header .= "MIME-Version: 1.0\n";
 173
 174          if (isMultipart()) {
 175             $header .= "Content-Type: multipart/mixed; boundary=\"";
 176             $header .= mimeBoundary();
 177             $header .= "\"\r\n";
 178          } else {
 179             $header .= "Content-Type: text/plain; charset=ISO-8859-1\r\n";
 180             $header .= "Content-Transfer-Encoding: 8bit\r\n";
 181          }
 182          $header .= "\r\n"; // One blank line to separate header and body
 183
 184          $headerlength = strlen($header);
 185       }
 186
 187       // Write the header
 188       fputs ($fp, $header);
 189
 190       return $headerlength;
 191    }
 192
 193    // Send the body
 194    function writeBody ($fp, $passedBody) {
 195       $attachmentlength = 0;
 196
 197       if (isMultipart()) {
 198          $body = "--".mimeBoundary()."\r\n";
 199          $body .= "Content-Type: text/plain; charset=iso-8859-1\r\n";
 200          $body .= "Content-Transfer-Encoding: 8bit\r\n\r\n";
 201          $body .= stripslashes($passedBody) . "\r\n";
 202          fputs ($fp, $body);
 203
 204          $attachmentlenght = attachFiles($fp);
 205
 206          $postbody .= "\r\n--".mimeBoundary()."--\r\n\r\n";
 207          fputs ($fp, $postbody);
 208       } else {
 209          $body = stripslashes($passedBody) . "\r\n";
 210          fputs ($fp, $body);
 211          $postbody = "\r\n";
 212          fputs ($fp, $postbody);
 213       }
 214
 215       return (strlen($body) + strlen($postbody) + $attachmentlength);
 216    }
 217
 218    // Send mail using the sendmail command
 219    function sendSendmail($t, $c, $b, $subject, $body) {
 220       global $sendmail_path, $username, $domain;
 221
 222       // open pipe to sendmail
 223       $fp = popen (escapeshellcmd("$sendmail_path -t -f$username@$domain"), "w");
 224
 225       $headerlength = write822Header ($fp, $t, $c, $b, $subject);
 226       $bodylength = writeBody($fp, $body);
 227
 228       pclose($fp);
 229
 230       return ($headerlength + $bodylenght);
 231    }
 232
 233    function smtpReadData($smtpConnection) {
 234       $read = fgets($smtpConnection, 1024);
 235       $counter = 0;
 236       while ($read) {
 237          echo $read . "<BR>";
 238          $data[$counter] = $read;
 239          $read = fgets($smtpConnection, 1024);
 240          $counter++;
 241       }
 242    }
 243
 244    function sendSMTP($t, $c, $b, $subject, $body) {
 245       global $username, $domain, $version, $smtpServerAddress, $smtpPort,
 246          $data_dir;
 247
 248       $to = parseAddrs($t);
 249       $cc = parseAddrs($c);
 250       $bcc = parseAddrs($b);
 251       $from_addr = getPref($data_dir, $username, "email_address");
 252
 253       if ($from_addr == "")
 254          $from_addr = "$username@$domain";
 255
 256       $smtpConnection = fsockopen($smtpServerAddress, $smtpPort, $errorNumber, $errorString);
 257       if (!$smtpConnection) {
 258          echo "Error connecting to SMTP Server.<br>";
 259          echo "$errorNumber : $errorString<br>";
 260          exit;
 261       }
 262       $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024)));
 263       errorCheck($tmp);
 264
 265       $to_list = getLineOfAddrs($to);
 266       $cc_list = getLineOfAddrs($cc);
 267
 268       /** Lets introduce ourselves */
 269       fputs($smtpConnection, "HELO $domain\r\n");
 270       $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024)));
 271       errorCheck($tmp);
 272
 273       /** Ok, who is sending the message? */
 274       fputs($smtpConnection, "MAIL FROM:<$from_addr>\r\n");
 275       $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024)));
 276       errorCheck($tmp);
 277
 278       /** send who the recipients are */
 279       for ($i = 0; $i < count($to); $i++) {
 280          fputs($smtpConnection, "RCPT TO:<$to[$i]>\r\n");
 281          $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024)));
 282          errorCheck($tmp);
 283       }
 284       for ($i = 0; $i < count($cc); $i++) {
 285          fputs($smtpConnection, "RCPT TO:<$cc[$i]>\r\n");
 286          $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024)));
 287          errorCheck($tmp);
 288       }
 289       for ($i = 0; $i < count($bcc); $i++) {
 290          fputs($smtpConnection, "RCPT TO:<$bcc[$i]>\r\n");
 291          $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024)));
 292          errorCheck($tmp);
 293       }
 294
 295       /** Lets start sending the actual message */
 296       fputs($smtpConnection, "DATA\r\n");
 297       $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024)));
 298       errorCheck($tmp);
 299
 300       // Send the message
 301       $headerlength = write822Header ($smtpConnection, $t, $c, $b, $subject);
 302       $bodylength = writeBody($smtpConnection, $body);
 303
 304       fputs($smtpConnection, ".\r\n"); // end the DATA part
 305       $tmp = nl2br(htmlspecialchars(fgets($smtpConnection, 1024)));
 306       $num = errorCheck($tmp);
 307       if ($num != 250) {
 308          echo "<HTML><BODY BGCOLOR=FFFFFF>ERROR<BR>Message not sent!<BR>Reason given: $tmp<BR></BODY></HTML>";
 309       }
 310
 311       fputs($smtpConnection, "QUIT\r\n"); // log off
 312
 313       fclose($smtpConnection);
 314
 315       return ($headerlength + $bodylength);
 316    }
 317
 318
 319    function errorCheck($line) {
 320       // Status:  0 = fatal
 321       //          5 = ok
 322
 323       $err_num = substr($line, 0, strpos($line, " "));
 324       switch ($err_num) {
 325          case 500:   $message = "Syntax error; command not recognized";
 326                      $status = 0;
 327                      break;
 328          case 501:   $message = "Syntax error in parameters or arguments";
 329                      $status = 0;
 330                      break;
 331          case 502:   $message = "Command not implemented";
 332                      $status = 0;
 333                      break;
 334          case 503:   $message = "Bad sequence of commands";
 335                      $status = 0;
 336                      break;
 337          case 504:   $message = "Command parameter not implemented";
 338                      $status = 0;
 339                      break;
 340
 341
 342          case 211:   $message = "System status, or system help reply";
 343                      $status = 5;
 344                      break;
 345          case 214:   $message = "Help message";
 346                      $status = 5;
 347                      break;
 348
 349
 350          case 220:   $message = "Service ready";
 351                      $status = 5;
 352                      break;
 353          case 221:   $message = "Service closing transmission channel";
 354                      $status = 5;
 355                      break;
 356          case 421:   $message = "Service not available, closing chanel";
 357                      $status = 0;
 358                      break;
 359
 360
 361          case 250:   $message = "Requested mail action okay, completed";
 362                      $status = 5;
 363                      break;
 364          case 251:   $message = "User not local; will forward";
 365                      $status = 5;
 366                      break;
 367          case 450:   $message = "Requested mail action not taken:  mailbox unavailable";
 368                      $status = 0;
 369                      break;
 370          case 550:   $message = "Requested action not taken:  mailbox unavailable";
 371                      $status = 0;
 372                      break;
 373          case 451:   $message = "Requested action aborted:  error in processing";
 374                      $status = 0;
 375                      break;
 376          case 551:   $message = "User not local; please try forwarding";
 377                      $status = 0;
 378                      break;
 379          case 452:   $message = "Requested action not taken:  insufficient system storage";
 380                      $status = 0;
 381                      break;
 382          case 552:   $message = "Requested mail action aborted:  exceeding storage allocation";
 383                      $status = 0;
 384                      break;
 385          case 553:   $message = "Requested action not taken: mailbox name not allowed";
 386                      $status = 0;
 387                      break;
 388          case 354:   $message = "Start mail input; end with .";
 389                      $status = 5;
 390                      break;
 391          case 554:   $message = "Transaction failed";
 392                      $status = 0;
 393                      break;
 394          default:    $message = "Unknown response: $line";
 395                      $status = 0;
 396                      $error_num = "001";
 397                      break;
 398       }
 399
 400       if ($status == 0) {
 401          echo "<HTML><BODY BGCOLOR=FFFFFF>";
 402          echo "<TT>";
 403          echo "<BR><B>ERROR</B><BR><BR>";
 404          echo "&nbsp;&nbsp;&nbsp;<B>Error Number: </B>$err_num<BR>";
 405          echo "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Reason: </B>$message<BR>";
 406          echo "<B>Server Response: </B>$line<BR>";
 407          echo "<BR>MAIL NOT SENT";
 408          echo "</TT></BODY></HTML>";
 409          exit;
 410       }
 411       return $err_num;
 412    }
 413
 414    function sendMessage($t, $c, $b, $subject, $body) {
 415       global $useSendmail;
 416       global $data_dir, $username, $domain, $key, $version, $sent_folder, $imapServerAddress;
 417
 418       if ($useSendmail==true) {
 419          $length = sendSendmail($t, $c, $b, $subject, $body);
 420       } else {
 421          $length = sendSMTP($t, $c, $b, $subject, $body);
 422       }
 423
 424
 425       // This is a proposed interface to save messages in the sent folder
 426       //  -- gustavf
 427       //
 428       // $imap_stream = sqimap_login($username, $key, $imapServerAddress, 1);
 429       // sqimap_append ($imap_stream, $sent_folder, $length);
 430       // write822Header ($imap_stream, .....);
 431       // writeBody ($imap_stream, ....);
 432       // sqimap_append_done($imap_stream);
 433       //
 434       // Or something like that...
 435
 436       // Delete the files uploaded for attaching (if any).
 437       deleteAttachments();
 438
 439    }
 440
 441 ?>