4 ** This contains all the functions needed to send messages through
5 ** an smtp server or sendmail.
12 // This should most probably go to some initialization...
13 if (ereg("^([^@%/]+)[@%/](.+)$", $username, $usernamedata)) {
14 $popuser = $usernamedata[1];
15 $domain = $usernamedata[2];
20 // We need domain for smtp
22 $domain = getenv("HOSTNAME");
24 // Returns true only if this message is multipart
25 function isMultipart () {
28 if (count($attachments)>0)
34 // Attach the files that are due to be attached
35 function attachFiles ($fp) {
36 global $attachments, $attachment_dir;
42 while (list($localname, $remotename) = each($attachments)) {
43 // This is to make sure noone is giving a filename in another
45 $localname = ereg_replace ("\\/", "", $localname);
47 $fileinfo = fopen ($attachment_dir.$localname.".info", "r");
48 $filetype = fgets ($fileinfo, 8192);
50 $filetype = trim ($filetype);
52 $filetype = "application/octet-stream";
54 $header = "--".mimeBoundary()."\r\n";
55 $header .= "Content-Type: $filetype;name=\"$remotename\"\r\n";
56 $header .= "Content-Disposition: attachment; filename=\"$remotename\"\r\n";
57 $header .= "Content-Transfer-Encoding: base64\r\n\r\n";
59 $length +
= strlen($header);
61 $file = fopen ($attachment_dir.$localname, "r");
62 while ($tmp = fread($file, 570)) {
63 $encoded = chunk_split(base64_encode($tmp));
64 $length +
= strlen($encoded);
65 fputs ($fp, $encoded);
74 // Delete files that are uploaded for attaching
75 function deleteAttachments() {
76 global $attachments, $attachment_dir;
80 while (list($localname, $remotename) = each($attachments)) {
81 if (!ereg ("\\/", $localname)) {
82 unlink ($attachment_dir.$localname);
83 unlink ($attachment_dir.$localname.".info");
89 // Return a nice MIME-boundary
90 function mimeBoundary () {
91 static $mimeBoundaryString;
93 if ($mimeBoundaryString == "") {
94 $mimeBoundaryString = GenerateRandomString(70, '\'()+,-./:=?_', 7);
97 return $mimeBoundaryString;
100 /* Time offset for correct timezone */
101 function timezone () {
104 $diff_second = date("Z");
106 $diff_second = - $diff_second;
107 if ($diff_second > 0)
112 $diff_second = abs($diff_second);
114 $diff_hour = floor ($diff_second / 3600);
115 $diff_minute = floor (($diff_second-3600*$diff_hour) / 60);
117 $zonename = "(".strftime("%Z").")";
118 $result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute, $zonename);
122 /* Print all the needed RFC822 headers */
123 function write822Header ($fp, $t, $c, $b, $subject, $more_headers) {
124 global $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT;
125 global $data_dir, $username, $popuser, $domain, $version, $useSendmail;
126 global $default_charset, $HTTP_VIA, $HTTP_X_FORWARDED_FOR;
129 // Storing the header to make sure the header is the same
130 // everytime the header is printed.
131 static $header, $headerlength;
134 $to = parseAddrs($t);
135 $cc = parseAddrs($c);
136 $bcc = parseAddrs($b);
137 $reply_to = getPref($data_dir, $username, "reply_to");
138 $from = getPref($data_dir, $username, "full_name");
139 $from_addr = getPref($data_dir, $username, "email_address");
141 if ($from_addr == "")
142 $from_addr = $popuser."@".$domain;
144 $to_list = getLineOfAddrs($to);
145 $cc_list = getLineOfAddrs($cc);
146 $bcc_list = getLineOfAddrs($bcc);
148 /* Encoding 8-bit characters and making from line */
149 $subject = sqStripSlashes(encodeHeader($subject));
151 $from = "<$from_addr>";
153 $from = "\"" . encodeHeader($from) . "\" <$from_addr>";
155 /* This creates an RFC 822 date */
156 $date = date("D, j M Y H:i:s ", mktime()) . timezone();
158 /* Create a message-id */
159 $message_id = "<" . $REMOTE_PORT . "." . $REMOTE_ADDR . ".";
160 $message_id .= time() . ".squirrel@" . $SERVER_NAME .">";
162 /* Make an RFC822 Received: line */
163 if (isset($REMOTE_HOST))
164 $received_from = "$REMOTE_HOST ([$REMOTE_ADDR])";
166 $received_from = $REMOTE_ADDR;
168 if (isset($HTTP_VIA) ||
isset ($HTTP_X_FORWARDED_FOR)) {
169 if ($HTTP_X_FORWARDED_FOR == "")
170 $HTTP_X_FORWARDED_FOR = "unknown";
171 $received_from .= " (proxying for $HTTP_X_FORWARDED_FOR)";
174 $header = "Received: from $received_from\r\n";
175 $header .= " (SquirrelMail authenticated user $username)\r\n";
176 $header .= " by $SERVER_NAME with HTTP;\r\n";
177 $header .= " $date\r\n";
179 /* Insert the rest of the header fields */
180 $header .= "Message-ID: $message_id\r\n";
181 $header .= "Date: $date\r\n";
182 $header .= "Subject: $subject\r\n";
183 $header .= "From: $from\r\n";
184 $header .= "To: $to_list \r\n"; // Who it's TO
186 /* Insert headers from the $more_headers array */
187 if(is_array($more_headers)) {
188 reset($more_headers);
189 while(list($h_name, $h_val) = each($more_headers)) {
190 $header .= sprintf("%s: %s\r\n", $h_name, $h_val);
195 $header .= "Cc: $cc_list\r\n"; // Who the CCs are
199 $header .= "Reply-To: $reply_to\r\n";
203 // BCCs is removed from header by sendmail
204 $header .= "Bcc: $bcc_list\r\n";
208 $header .= "X-Mailer: SquirrelMail (version $version)\r\n"; // Identify SquirrelMail
211 $header .= "MIME-Version: 1.0\r\n";
214 $header .= "Content-Type: multipart/mixed; boundary=\"";
215 $header .= mimeBoundary();
218 if ($default_charset != "")
219 $header .= "Content-Type: text/plain; charset=$default_charset\r\n";
221 $header .= "Content-Type: text/plain;\r\n";
222 $header .= "Content-Transfer-Encoding: 8bit\r\n";
224 $header .= "\r\n"; // One blank line to separate header and body
226 $headerlength = strlen($header);
230 fputs ($fp, $header);
232 return $headerlength;
236 function writeBody ($fp, $passedBody) {
237 global $default_charset;
239 $attachmentlength = 0;
242 $body = "--".mimeBoundary()."\r\n";
244 if ($default_charset != "")
245 $body .= "Content-Type: text/plain; charset=$default_charset\r\n";
247 $body .= "Content-Type: text/plain\r\n";
249 $body .= "Content-Transfer-Encoding: 8bit\r\n\r\n";
250 $body .= sqStripSlashes($passedBody) . "\r\n\r\n";
253 $attachmentlength = attachFiles($fp);
255 $postbody .= "\r\n--".mimeBoundary()."--\r\n\r\n";
256 fputs ($fp, $postbody);
258 $body = sqStripSlashes($passedBody) . "\r\n";
261 fputs ($fp, $postbody);
264 return (strlen($body) +
strlen($postbody) +
$attachmentlength);
267 // Send mail using the sendmail command
268 function sendSendmail($t, $c, $b, $subject, $body, $more_headers) {
269 global $sendmail_path, $popuser, $username, $domain;
271 // Build envelope sender address. Make sure it doesn't contain
272 // spaces or other "weird" chars that would allow a user to
273 // exploit the shell/pipe it is used in.
274 $envelopefrom = "$popuser@$domain";
275 $envelopefrom = ereg_replace("[[:blank:]]","", $envelopefrom);
276 $envelopefrom = ereg_replace("[[:space:]]","", $envelopefrom);
277 $envelopefrom = ereg_replace("[[:cntrl:]]","", $envelopefrom);
279 // open pipe to sendmail
280 $fp = popen (escapeshellcmd("$sendmail_path -t -f$envelopefrom"), "w");
282 $headerlength = write822Header ($fp, $t, $c, $b, $subject, $more_headers);
283 $bodylength = writeBody($fp, $body);
287 return ($headerlength +
$bodylength);
290 function smtpReadData($smtpConnection) {
291 $read = fgets($smtpConnection, 1024);
295 $data[$counter] = $read;
296 $read = fgets($smtpConnection, 1024);
301 function sendSMTP($t, $c, $b, $subject, $body, $more_headers) {
302 global $username, $popuser, $domain, $version, $smtpServerAddress, $smtpPort,
305 $to = parseAddrs($t);
306 $cc = parseAddrs($c);
307 $bcc = parseAddrs($b);
308 $from_addr = getPref($data_dir, $username, "email_address");
311 $from_addr = "$popuser@$domain";
313 $smtpConnection = fsockopen($smtpServerAddress, $smtpPort, $errorNumber, $errorString);
314 if (!$smtpConnection) {
315 echo "Error connecting to SMTP Server.<br>";
316 echo "$errorNumber : $errorString<br>";
319 $tmp = fgets($smtpConnection, 1024);
320 errorCheck($tmp, $smtpConnection);
322 $to_list = getLineOfAddrs($to);
323 $cc_list = getLineOfAddrs($cc);
325 /** Lets introduce ourselves */
326 fputs($smtpConnection, "HELO $domain\r\n");
327 $tmp = fgets($smtpConnection, 1024);
328 errorCheck($tmp, $smtpConnection);
330 /** Ok, who is sending the message? */
331 fputs($smtpConnection, "MAIL FROM:<$from_addr>\r\n");
332 $tmp = fgets($smtpConnection, 1024);
333 errorCheck($tmp, $smtpConnection);
335 /** send who the recipients are */
336 for ($i = 0; $i < count($to); $i++
) {
337 fputs($smtpConnection, "RCPT TO:<$to[$i]>\r\n");
338 $tmp = fgets($smtpConnection, 1024);
339 errorCheck($tmp, $smtpConnection);
341 for ($i = 0; $i < count($cc); $i++
) {
342 fputs($smtpConnection, "RCPT TO:<$cc[$i]>\r\n");
343 $tmp = fgets($smtpConnection, 1024);
344 errorCheck($tmp, $smtpConnection);
346 for ($i = 0; $i < count($bcc); $i++
) {
347 fputs($smtpConnection, "RCPT TO:<$bcc[$i]>\r\n");
348 $tmp = fgets($smtpConnection, 1024);
349 errorCheck($tmp, $smtpConnection);
352 /** Lets start sending the actual message */
353 fputs($smtpConnection, "DATA\r\n");
354 $tmp = fgets($smtpConnection, 1024);
355 errorCheck($tmp, $smtpConnection);
358 $headerlength = write822Header ($smtpConnection, $t, $c, $b, $subject, $more_headers);
359 $bodylength = writeBody($smtpConnection, $body);
361 fputs($smtpConnection, ".\r\n"); // end the DATA part
362 $tmp = fgets($smtpConnection, 1024);
363 $num = errorCheck($tmp, $smtpConnection);
365 $tmp = nl2br(htmlspecialchars($tmp));
366 echo "ERROR<BR>Message not sent!<BR>Reason given: $tmp<BR></BODY></HTML>";
369 fputs($smtpConnection, "QUIT\r\n"); // log off
371 fclose($smtpConnection);
373 return ($headerlength +
$bodylength);
377 function errorCheck($line, $smtpConnection) {
378 global $page_header_php;
380 if (!isset($page_header_php)) {
381 include "../functions/page_header.php";
384 // Read new lines on a multiline response
386 while(ereg("^[0-9]+-", $line)) {
387 $line = fgets($smtpConnection, 1024);
394 $err_num = substr($line, 0, strpos($line, " "));
396 case 500: $message = "Syntax error; command not recognized";
399 case 501: $message = "Syntax error in parameters or arguments";
402 case 502: $message = "Command not implemented";
405 case 503: $message = "Bad sequence of commands";
408 case 504: $message = "Command parameter not implemented";
413 case 211: $message = "System status, or system help reply";
416 case 214: $message = "Help message";
421 case 220: $message = "Service ready";
424 case 221: $message = "Service closing transmission channel";
427 case 421: $message = "Service not available, closing chanel";
432 case 250: $message = "Requested mail action okay, completed";
435 case 251: $message = "User not local; will forward";
438 case 450: $message = "Requested mail action not taken: mailbox unavailable";
441 case 550: $message = "Requested action not taken: mailbox unavailable";
444 case 451: $message = "Requested action aborted: error in processing";
447 case 551: $message = "User not local; please try forwarding";
450 case 452: $message = "Requested action not taken: insufficient system storage";
453 case 552: $message = "Requested mail action aborted: exceeding storage allocation";
456 case 553: $message = "Requested action not taken: mailbox name not allowed";
459 case 354: $message = "Start mail input; end with .";
462 case 554: $message = "Transaction failed";
465 default: $message = "Unknown response: ". nl2br(htmlspecialchars($lines));
472 displayPageHeader($color, "None");
474 echo "<br><b><font color=\"$color[1]\">ERROR</font></b><br><br>";
475 echo " <B>Error Number: </B>$err_num<BR>";
476 echo " <B>Reason: </B>$message<BR>";
477 $lines = nl2br(htmlspecialchars($lines));
478 echo "<B>Server Response: </B>$lines<BR>";
479 echo "<BR>MAIL NOT SENT";
480 echo "</TT></BODY></HTML>";
486 function sendMessage($t, $c, $b, $subject, $body, $reply_id) {
487 global $useSendmail, $msg_id, $is_reply, $mailbox;
488 global $data_dir, $username, $domain, $key, $version, $sent_folder, $imapServerAddress, $imapPort;
489 $more_headers = Array();
491 $imap_stream = sqimap_login($username, $key, $imapServerAddress, $imapPort, 1);
494 sqimap_mailbox_select ($imap_stream, $mailbox);
495 sqimap_messages_flag ($imap_stream, $reply_id, $reply_id, "Answered");
497 // Insert In-Reply-To and References headers if the
498 // message-id of the message we reply to is set (longer than "<>")
499 // The References header should really be the old Referenced header
500 // with the message ID appended, but it can be only the message ID too.
501 $hdr = sqimap_get_small_header ($imap_stream, $reply_id, false);
502 if(strlen($hdr->message_id
) > 2) {
503 $more_headers["In-Reply-To"] = $hdr->message_id
;
504 $more_headers["References"] = $hdr->message_id
;
508 // In order to remove the problem of users not able to create
509 // messages with "." on a blank line, RFC821 has made provision
510 // in section 4.5.2 (Transparency).
511 $body = ereg_replace("\n\.", "\n\.\.", $body);
512 $body = ereg_replace("^\.", "\.\.", $body);
514 // this is to catch all plain \n instances and
515 // replace them with \r\n.
516 $body = ereg_replace("\r\n", "\n", $body);
517 $body = ereg_replace("\n", "\r\n", $body);
520 $length = sendSendmail($t, $c, $b, $subject, $body, $more_headers);
522 $length = sendSMTP($t, $c, $b, $subject, $body, $more_headers);
525 if (sqimap_mailbox_exists ($imap_stream, $sent_folder)) {
526 sqimap_append ($imap_stream, $sent_folder, $length);
527 write822Header ($imap_stream, $t, $c, $b, $subject, $more_headers);
528 writeBody ($imap_stream, $body);
529 sqimap_append_done ($imap_stream);
531 sqimap_logout($imap_stream);
532 // Delete the files uploaded for attaching (if any).