629 lines
No EOL
22 KiB
PHP
629 lines
No EOL
22 KiB
PHP
<?php
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/** smtp.php
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**
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** This contains all the functions needed to send messages through
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** an smtp server or sendmail.
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**
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** $Id$
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**/
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if (defined('smtp_php'))
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return;
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define('smtp_php', true);
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require_once('../functions/addressbook.php');
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require_once('../functions/plugin.php');
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global $username, $popuser, $domain;
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// This should most probably go to some initialization...
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if (ereg("^([^@%/]+)[@%/](.+)$", $username, $usernamedata)) {
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$popuser = $usernamedata[1];
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$domain = $usernamedata[2];
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unset($usernamedata);
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} else {
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$popuser = $username;
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}
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// We need domain for smtp
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if (!$domain)
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$domain = getenv('HOSTNAME');
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// Returns true only if this message is multipart
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function isMultipart () {
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global $attachments;
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if (count($attachments)>0)
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return true;
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else
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return false;
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}
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// looks up aliases in the addressbook and expands them to
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// the full address.
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// Adds @$domain if it wasn't in the address book and if it
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// doesn't have an @ symbol in it
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function expandAddrs ($array) {
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global $domain;
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// don't show errors -- kinda critical that we don't see
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// them here since the redirect won't work if we do show them
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$abook = addressbook_init(false);
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for ($i=0; $i < count($array); $i++) {
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$result = $abook->lookup($array[$i]);
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$ret = "";
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if (isset($result['email'])) {
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if (isset($result['name'])) {
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$ret = '"'.$result['name'].'" ';
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}
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$ret .= '<'.$result['email'].'>';
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$array[$i] = $ret;
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}
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else
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{
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if (strpos($array[$i], '@') === false)
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$array[$i] .= '@' . $domain;
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$array[$i] = '<' . $array[$i] . '>';
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}
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}
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return $array;
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}
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// Attach the files that are due to be attached
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function attachFiles ($fp) {
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global $attachments, $attachment_dir;
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$length = 0;
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if (isMultipart()) {
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foreach ($attachments as $info)
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{
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if (isset($info['type']))
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$filetype = $info['type'];
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else
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$filetype = 'application/octet-stream';
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$header = '--'.mimeBoundary()."\r\n";
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$header .= "Content-Type: $filetype; name=\"" .
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$info['remotefilename'] . "\"\r\n";
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$header .= "Content-Disposition: attachment; filename=\"" .
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$info['remotefilename'] . "\"\r\n";
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// Use 'rb' for NT systems -- read binary
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// Unix doesn't care -- everything's binary! :-)
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$file = fopen ($attachment_dir . $info['localfilename'], 'rb');
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if (substr($filetype, 0, 5) == 'text/' ||
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$filetype == 'message/rfc822') {
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$header .= "\r\n";
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fputs ($fp, $header);
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$length += strlen($header);
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while ($tmp = fgets($file, 4096)) {
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$tmp = str_replace("\r\n", "\n", $tmp);
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$tmp = str_replace("\r", "\n", $tmp);
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$tmp = str_replace("\n", "\r\n", $tmp);
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if (feof($fp) && substr($tmp, -2) != "\r\n")
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$tmp .= "\r\n";
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fputs($fp, $tmp);
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$length += strlen($tmp);
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}
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} else {
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$header .= "Content-Transfer-Encoding: base64\r\n\r\n";
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fputs ($fp, $header);
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$length += strlen($header);
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while ($tmp = fread($file, 570)) {
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$encoded = chunk_split(base64_encode($tmp));
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$length += strlen($encoded);
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fputs ($fp, $encoded);
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}
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}
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fclose ($file);
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}
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}
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return $length;
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}
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// Delete files that are uploaded for attaching
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function deleteAttachments() {
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global $attachments, $attachment_dir;
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if (isMultipart()) {
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reset($attachments);
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while (list($localname, $remotename) = each($attachments)) {
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if (!ereg ("\\/", $localname)) {
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unlink ($attachment_dir.$localname);
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unlink ($attachment_dir.$localname.'.info');
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}
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}
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}
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}
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// Return a nice MIME-boundary
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function mimeBoundary () {
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static $mimeBoundaryString;
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if ($mimeBoundaryString == "") {
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$mimeBoundaryString = "----=_" .
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GenerateRandomString(60, '\'()+,-./:=?_', 7);
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}
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return $mimeBoundaryString;
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}
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/* Time offset for correct timezone */
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function timezone () {
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global $invert_time;
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$diff_second = date('Z');
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if ($invert_time)
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$diff_second = - $diff_second;
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if ($diff_second > 0)
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$sign = '+';
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else
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$sign = '-';
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$diff_second = abs($diff_second);
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$diff_hour = floor ($diff_second / 3600);
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$diff_minute = floor (($diff_second-3600*$diff_hour) / 60);
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$zonename = '('.strftime('%Z').')';
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$result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute, $zonename);
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return ($result);
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}
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/* Print all the needed RFC822 headers */
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function write822Header ($fp, $t, $c, $b, $subject, $more_headers) {
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global $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT;
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global $data_dir, $username, $popuser, $domain, $version, $useSendmail;
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global $default_charset, $HTTP_VIA, $HTTP_X_FORWARDED_FOR;
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global $REMOTE_HOST, $identity;
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// Storing the header to make sure the header is the same
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// everytime the header is printed.
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static $header, $headerlength;
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if ($header == '') {
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$to = expandAddrs(parseAddrs($t));
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$cc = expandAddrs(parseAddrs($c));
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$bcc = expandAddrs(parseAddrs($b));
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if (isset($identity) && $identity != 'default')
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{
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$reply_to = getPref($data_dir, $username, 'reply_to' . $identity);
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$from = getPref($data_dir, $username, 'full_name' . $identity);
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$from_addr = getPref($data_dir, $username, 'email_address' . $identity);
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}
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else
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{
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$reply_to = getPref($data_dir, $username, 'reply_to');
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$from = getPref($data_dir, $username, 'full_name');
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$from_addr = getPref($data_dir, $username, 'email_address');
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}
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if ($from_addr == '')
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$from_addr = $popuser.'@'.$domain;
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$to_list = getLineOfAddrs($to);
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$cc_list = getLineOfAddrs($cc);
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$bcc_list = getLineOfAddrs($bcc);
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/* Encoding 8-bit characters and making from line */
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$subject = encodeHeader($subject);
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if ($from == '')
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$from = "<$from_addr>";
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else
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$from = '"' . encodeHeader($from) . "\" <$from_addr>";
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/* This creates an RFC 822 date */
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$date = date("D, j M Y H:i:s ", mktime()) . timezone();
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/* Create a message-id */
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$message_id = '<' . $REMOTE_PORT . '.' . $REMOTE_ADDR . '.';
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$message_id .= time() . '.squirrel@' . $SERVER_NAME .'>';
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/* Make an RFC822 Received: line */
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if (isset($REMOTE_HOST))
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$received_from = "$REMOTE_HOST ([$REMOTE_ADDR])";
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else
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$received_from = $REMOTE_ADDR;
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if (isset($HTTP_VIA) || isset ($HTTP_X_FORWARDED_FOR)) {
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if ($HTTP_X_FORWARDED_FOR == '')
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$HTTP_X_FORWARDED_FOR = 'unknown';
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$received_from .= " (proxying for $HTTP_X_FORWARDED_FOR)";
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}
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$header = "Received: from $received_from\r\n";
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$header .= " (SquirrelMail authenticated user $username)\r\n";
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$header .= " by $SERVER_NAME with HTTP;\r\n";
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$header .= " $date\r\n";
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/* Insert the rest of the header fields */
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$header .= "Message-ID: $message_id\r\n";
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$header .= "Date: $date\r\n";
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$header .= "Subject: $subject\r\n";
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$header .= "From: $from\r\n";
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$header .= "To: $to_list\r\n"; // Who it's TO
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/* Insert headers from the $more_headers array */
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if(is_array($more_headers)) {
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reset($more_headers);
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while(list($h_name, $h_val) = each($more_headers)) {
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$header .= sprintf("%s: %s\r\n", $h_name, $h_val);
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}
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}
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if ($cc_list) {
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$header .= "Cc: $cc_list\r\n"; // Who the CCs are
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}
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if ($reply_to != '')
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$header .= "Reply-To: $reply_to\r\n";
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if ($useSendmail) {
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if ($bcc_list) {
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// BCCs is removed from header by sendmail
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$header .= "Bcc: $bcc_list\r\n";
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}
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}
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$header .= "X-Mailer: SquirrelMail (version $version)\r\n"; // Identify SquirrelMail
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// Do the MIME-stuff
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$header .= "MIME-Version: 1.0\r\n";
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if (isMultipart()) {
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$header .= 'Content-Type: multipart/mixed; boundary="';
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$header .= mimeBoundary();
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$header .= "\"\r\n";
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} else {
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if ($default_charset != '')
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$header .= "Content-Type: text/plain; charset=$default_charset\r\n";
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else
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$header .= "Content-Type: text/plain;\r\n";
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$header .= "Content-Transfer-Encoding: 8bit\r\n";
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}
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$header .= "\r\n"; // One blank line to separate header and body
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$headerlength = strlen($header);
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}
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// Write the header
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fputs ($fp, $header);
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return $headerlength;
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}
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// Send the body
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function writeBody ($fp, $passedBody) {
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global $default_charset;
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$attachmentlength = 0;
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if (isMultipart()) {
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$body = '--'.mimeBoundary()."\r\n";
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if ($default_charset != "")
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$body .= "Content-Type: text/plain; charset=$default_charset\r\n";
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else
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$body .= "Content-Type: text/plain\r\n";
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$body .= "Content-Transfer-Encoding: 8bit\r\n\r\n";
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$body .= $passedBody . "\r\n\r\n";
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fputs ($fp, $body);
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$attachmentlength = attachFiles($fp);
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if (!isset($postbody)) $postbody = "";
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$postbody .= "\r\n--".mimeBoundary()."--\r\n\r\n";
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fputs ($fp, $postbody);
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} else {
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$body = $passedBody . "\r\n";
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fputs ($fp, $body);
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$postbody = "\r\n";
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fputs ($fp, $postbody);
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}
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return (strlen($body) + strlen($postbody) + $attachmentlength);
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}
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// Send mail using the sendmail command
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function sendSendmail($t, $c, $b, $subject, $body, $more_headers) {
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global $sendmail_path, $popuser, $username, $domain;
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// Build envelope sender address. Make sure it doesn't contain
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// spaces or other "weird" chars that would allow a user to
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// exploit the shell/pipe it is used in.
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$envelopefrom = "$popuser@$domain";
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$envelopefrom = ereg_replace("[[:blank:]]",'', $envelopefrom);
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$envelopefrom = ereg_replace("[[:space:]]",'', $envelopefrom);
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$envelopefrom = ereg_replace("[[:cntrl:]]",'', $envelopefrom);
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// open pipe to sendmail or qmail-inject (qmail-inject doesn't accept -t param)
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if (strstr($sendmail_path, "qmail-inject")) {
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$fp = popen (escapeshellcmd("$sendmail_path -f$envelopefrom"), "w");
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} else {
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$fp = popen (escapeshellcmd("$sendmail_path -t -f$envelopefrom"), "w");
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}
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$headerlength = write822Header ($fp, $t, $c, $b, $subject, $more_headers);
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$bodylength = writeBody($fp, $body);
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pclose($fp);
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return ($headerlength + $bodylength);
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}
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function smtpReadData($smtpConnection) {
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$read = fgets($smtpConnection, 1024);
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$counter = 0;
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while ($read) {
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echo $read . '<BR>';
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$data[$counter] = $read;
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$read = fgets($smtpConnection, 1024);
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$counter++;
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}
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}
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function sendSMTP($t, $c, $b, $subject, $body, $more_headers) {
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global $username, $popuser, $domain, $version, $smtpServerAddress,
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$smtpPort, $data_dir, $color, $use_authenticated_smtp, $identity,
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$key, $onetimepad;
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$to = expandAddrs(parseAddrs($t));
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$cc = expandAddrs(parseAddrs($c));
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$bcc = expandAddrs(parseAddrs($b));
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if (isset($identity) && $identity != 'default')
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$from_addr = getPref($data_dir, $username, 'email_address' . $identity);
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else
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$from_addr = getPref($data_dir, $username, 'email_address');
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if (!$from_addr)
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$from_addr = "$popuser@$domain";
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$smtpConnection = fsockopen($smtpServerAddress, $smtpPort, $errorNumber, $errorString);
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if (!$smtpConnection) {
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echo 'Error connecting to SMTP Server.<br>';
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echo "$errorNumber : $errorString<br>";
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exit;
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}
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$tmp = fgets($smtpConnection, 1024);
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if (errorCheck($tmp, $smtpConnection)!=5) return(0);
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$to_list = getLineOfAddrs($to);
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$cc_list = getLineOfAddrs($cc);
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/** Lets introduce ourselves */
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if (! isset ($use_authenticated_smtp) || $use_authenticated_smtp == false) {
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fputs($smtpConnection, "HELO $domain\r\n");
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$tmp = fgets($smtpConnection, 1024);
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if (errorCheck($tmp, $smtpConnection)!=5) return(0);
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} else {
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fputs($smtpConnection, "EHLO $domain\r\n");
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$tmp = fgets($smtpConnection, 1024);
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if (errorCheck($tmp, $smtpConnection)!=5) return(0);
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fputs($smtpConnection, "AUTH LOGIN\r\n");
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$tmp = fgets($smtpConnection, 1024);
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if (errorCheck($tmp, $smtpConnection)!=5) return(0);
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fputs($smtpConnection, base64_encode ($username) . "\r\n");
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$tmp = fgets($smtpConnection, 1024);
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if (errorCheck($tmp, $smtpConnection)!=5) return(0);
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fputs($smtpConnection, base64_encode (OneTimePadDecrypt($key, $onetimepad)) . "\r\n");
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$tmp = fgets($smtpConnection, 1024);
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if (errorCheck($tmp, $smtpConnection)!=5) return(0);
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}
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/** Ok, who is sending the message? */
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fputs($smtpConnection, "MAIL FROM: <$from_addr>\r\n");
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$tmp = fgets($smtpConnection, 1024);
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if (errorCheck($tmp, $smtpConnection)!=5) return(0);
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/** send who the recipients are */
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for ($i = 0; $i < count($to); $i++) {
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fputs($smtpConnection, "RCPT TO: $to[$i]\r\n");
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$tmp = fgets($smtpConnection, 1024);
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if (errorCheck($tmp, $smtpConnection)!=5) return(0);
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}
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for ($i = 0; $i < count($cc); $i++) {
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fputs($smtpConnection, "RCPT TO: $cc[$i]\r\n");
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$tmp = fgets($smtpConnection, 1024);
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if (errorCheck($tmp, $smtpConnection)!=5) return(0);
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}
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for ($i = 0; $i < count($bcc); $i++) {
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fputs($smtpConnection, "RCPT TO: $bcc[$i]\r\n");
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$tmp = fgets($smtpConnection, 1024);
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if (errorCheck($tmp, $smtpConnection)!=5) return(0);
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}
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/** Lets start sending the actual message */
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fputs($smtpConnection, "DATA\r\n");
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$tmp = fgets($smtpConnection, 1024);
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if (errorCheck($tmp, $smtpConnection)!=5) return(0);
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// Send the message
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$headerlength = write822Header ($smtpConnection, $t, $c, $b, $subject, $more_headers);
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$bodylength = writeBody($smtpConnection, $body);
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fputs($smtpConnection, ".\r\n"); // end the DATA part
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$tmp = fgets($smtpConnection, 1024);
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$num = errorCheck($tmp, $smtpConnection, true);
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if ($num != 250) {
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$tmp = nl2br(htmlspecialchars($tmp));
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displayPageHeader($color, 'None');
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include_once('../functions/display_messages.php');
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$msg = "Message not sent!<br>\nReason given: $tmp";
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plain_error_message($msg, $color);
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return(0);
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}
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fputs($smtpConnection, "QUIT\r\n"); // log off
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fclose($smtpConnection);
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return ($headerlength + $bodylength);
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}
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function errorCheck($line, $smtpConnection, $verbose = false) {
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global $color;
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|
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// Read new lines on a multiline response
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$lines = $line;
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while(ereg("^[0-9]+-", $line)) {
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$line = fgets($smtpConnection, 1024);
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$lines .= $line;
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}
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// Status: 0 = fatal
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// 5 = ok
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$err_num = substr($line, 0, strpos($line, " "));
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switch ($err_num) {
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case 500: $message = 'Syntax error; command not recognized';
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$status = 0;
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break;
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case 501: $message = 'Syntax error in parameters or arguments';
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$status = 0;
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break;
|
|
case 502: $message = 'Command not implemented';
|
|
$status = 0;
|
|
break;
|
|
case 503: $message = 'Bad sequence of commands';
|
|
$status = 0;
|
|
break;
|
|
case 504: $message = 'Command parameter not implemented';
|
|
$status = 0;
|
|
break;
|
|
|
|
|
|
case 211: $message = 'System status, or system help reply';
|
|
$status = 5;
|
|
break;
|
|
case 214: $message = 'Help message';
|
|
$status = 5;
|
|
break;
|
|
|
|
|
|
case 220: $message = 'Service ready';
|
|
$status = 5;
|
|
break;
|
|
case 221: $message = 'Service closing transmission channel';
|
|
$status = 5;
|
|
break;
|
|
case 421: $message = 'Service not available, closing chanel';
|
|
$status = 0;
|
|
break;
|
|
|
|
case 235: return(5); break;
|
|
case 250: $message = 'Requested mail action okay, completed';
|
|
$status = 5;
|
|
break;
|
|
case 251: $message = 'User not local; will forward';
|
|
$status = 5;
|
|
break;
|
|
case 334: return(5); break;
|
|
case 450: $message = 'Requested mail action not taken: mailbox unavailable';
|
|
$status = 0;
|
|
break;
|
|
case 550: $message = 'Requested action not taken: mailbox unavailable';
|
|
$status = 0;
|
|
break;
|
|
case 451: $message = 'Requested action aborted: error in processing';
|
|
$status = 0;
|
|
break;
|
|
case 551: $message = 'User not local; please try forwarding';
|
|
$status = 0;
|
|
break;
|
|
case 452: $message = 'Requested action not taken: insufficient system storage';
|
|
$status = 0;
|
|
break;
|
|
case 552: $message = 'Requested mail action aborted: exceeding storage allocation';
|
|
$status = 0;
|
|
break;
|
|
case 553: $message = 'Requested action not taken: mailbox name not allowed';
|
|
$status = 0;
|
|
break;
|
|
case 354: $message = 'Start mail input; end with .';
|
|
$status = 5;
|
|
break;
|
|
case 554: $message = 'Transaction failed';
|
|
$status = 0;
|
|
break;
|
|
default: $message = 'Unknown response: '. nl2br(htmlspecialchars($lines));
|
|
$status = 0;
|
|
$error_num = '001';
|
|
break;
|
|
}
|
|
|
|
if ($status == 0) {
|
|
include_once('../functions/page_header.php');
|
|
displayPageHeader($color, 'None');
|
|
include_once('../functions/display_messages.php');
|
|
$lines = nl2br(htmlspecialchars($lines));
|
|
$msg = $message . "<br>\nServer replied: $lines";
|
|
plain_error_message($msg, $color);
|
|
}
|
|
if (! $verbose) return $status;
|
|
return $err_num;
|
|
}
|
|
|
|
function sendMessage($t, $c, $b, $subject, $body, $reply_id) {
|
|
global $useSendmail, $msg_id, $is_reply, $mailbox, $onetimepad;
|
|
global $data_dir, $username, $domain, $key, $version, $sent_folder, $imapServerAddress, $imapPort;
|
|
global $more_headers;
|
|
$more_headers = Array();
|
|
|
|
do_hook("smtp_send");
|
|
|
|
$imap_stream = sqimap_login($username, $key, $imapServerAddress, $imapPort, 1);
|
|
|
|
if (isset($reply_id) && $reply_id) {
|
|
sqimap_mailbox_select ($imap_stream, $mailbox);
|
|
sqimap_messages_flag ($imap_stream, $reply_id, $reply_id, 'Answered');
|
|
|
|
// Insert In-Reply-To and References headers if the
|
|
// message-id of the message we reply to is set (longer than "<>")
|
|
// The References header should really be the old Referenced header
|
|
// with the message ID appended, but it can be only the message ID too.
|
|
$hdr = sqimap_get_small_header ($imap_stream, $reply_id, false);
|
|
if(strlen($hdr->message_id) > 2) {
|
|
$more_headers['In-Reply-To'] = $hdr->message_id;
|
|
$more_headers['References'] = $hdr->message_id;
|
|
}
|
|
}
|
|
|
|
// In order to remove the problem of users not able to create
|
|
// messages with "." on a blank line, RFC821 has made provision
|
|
// in section 4.5.2 (Transparency).
|
|
$body = ereg_replace("\n\\.", "\n..", $body);
|
|
$body = ereg_replace("^\\.", "..", $body);
|
|
|
|
// this is to catch all plain \n instances and
|
|
// replace them with \r\n. All newlines were converted
|
|
// into just \n inside the compose.php file.
|
|
$body = ereg_replace("\n", "\r\n", $body);
|
|
|
|
if ($useSendmail) {
|
|
$length = sendSendmail($t, $c, $b, $subject, $body, $more_headers);
|
|
} else {
|
|
$length = sendSMTP($t, $c, $b, $subject, $body, $more_headers);
|
|
}
|
|
|
|
if (sqimap_mailbox_exists ($imap_stream, $sent_folder)) {
|
|
sqimap_append ($imap_stream, $sent_folder, $length);
|
|
write822Header ($imap_stream, $t, $c, $b, $subject, $more_headers);
|
|
writeBody ($imap_stream, $body);
|
|
sqimap_append_done ($imap_stream);
|
|
}
|
|
sqimap_logout($imap_stream);
|
|
// Delete the files uploaded for attaching (if any).
|
|
// only if $length != 0 (if there was no error)
|
|
if ($length)
|
|
ClearAttachments();
|
|
|
|
return $length;
|
|
}
|
|
|
|
?>
|