+/**
+ * Replaces TinyMCE's emoticon images with plain-text representation
+ *
+ * @param string HTML content
+ * @return string HTML content
+ */
+function rcmail_replace_emoticons($html)
+{
+ $emoticons = array(
+ '8-)' => 'smiley-cool',
+ ':-#' => 'smiley-foot-in-mouth',
+ ':-*' => 'smiley-kiss',
+ ':-X' => 'smiley-sealed',
+ ':-P' => 'smiley-tongue-out',
+ ':-@' => 'smiley-yell',
+ ":'(" => 'smiley-cry',
+ ':-(' => 'smiley-frown',
+ ':-D' => 'smiley-laughing',
+ ':-)' => 'smiley-smile',
+ ':-S' => 'smiley-undecided',
+ ':-$' => 'smiley-embarassed',
+ 'O:-)' => 'smiley-innocent',
+ ':-|' => 'smiley-money-mouth',
+ ':-O' => 'smiley-surprised',
+ ';-)' => 'smiley-wink',
+ );
+
+ foreach ($emoticons as $idx => $file) {
+ // <img title="Cry" src="http://.../program/js/tiny_mce/plugins/emotions/img/smiley-cry.gif" border="0" alt="Cry" />
+ $search[] = '/<img title="[a-z ]+" src="https?:\/\/[a-z0-9_.\/-]+\/tiny_mce\/plugins\/emotions\/img\/'.$file.'.gif"[^>]+\/>/i';
+ $replace[] = $idx;
+ }
+
+ return preg_replace($search, $replace, $html);
+}
+
+
+/**
+ * Send the given message using the configured method
+ *
+ * @param object $message Reference to Mail_MIME object
+ * @param string $from Sender address string
+ * @param array $mailto Array of recipient address strings
+ * @param array $smtp_error SMTP error array (reference)
+ * @param string $body_file Location of file with saved message body (reference),
+ * used when delay_file_io is enabled
+ * @param array $smtp_opts SMTP options (e.g. DSN request)
+ *
+ * @return boolean Send status.
+ */
+function rcmail_deliver_message(&$message, $from, $mailto, &$smtp_error, &$body_file=null, $smtp_opts=null)
+{
+ global $CONFIG, $RCMAIL;
+
+ $headers = $message->headers();
+
+ // send thru SMTP server using custom SMTP library
+ if ($CONFIG['smtp_server']) {
+ // generate list of recipients
+ $a_recipients = array($mailto);
+
+ if (strlen($headers['Cc']))
+ $a_recipients[] = $headers['Cc'];
+ if (strlen($headers['Bcc']))
+ $a_recipients[] = $headers['Bcc'];
+
+ // clean Bcc from header for recipients
+ $send_headers = $headers;
+ unset($send_headers['Bcc']);
+ // here too, it because txtHeaders() below use $message->_headers not only $send_headers
+ unset($message->_headers['Bcc']);
+
+ $smtp_headers = $message->txtHeaders($send_headers, true);
+
+ if ($message->getParam('delay_file_io')) {
+ // use common temp dir
+ $temp_dir = $RCMAIL->config->get('temp_dir');
+ $body_file = tempnam($temp_dir, 'rcmMsg');
+ if (PEAR::isError($mime_result = $message->saveMessageBody($body_file))) {
+ raise_error(array('code' => 650, 'type' => 'php',
+ 'file' => __FILE__, 'line' => __LINE__,
+ 'message' => "Could not create message: ".$mime_result->getMessage()),
+ TRUE, FALSE);
+ return false;
+ }
+ $msg_body = fopen($body_file, 'r');
+ } else {
+ $msg_body = $message->get();
+ }
+
+ // send message
+ if (!is_object($RCMAIL->smtp))
+ $RCMAIL->smtp_init(true);
+
+ $sent = $RCMAIL->smtp->send_mail($from, $a_recipients, $smtp_headers, $msg_body, $smtp_opts);
+ $smtp_response = $RCMAIL->smtp->get_response();
+ $smtp_error = $RCMAIL->smtp->get_error();
+
+ // log error
+ if (!$sent)
+ raise_error(array('code' => 800, 'type' => 'smtp', 'line' => __LINE__, 'file' => __FILE__,
+ 'message' => "SMTP error: ".join("\n", $smtp_response)), TRUE, FALSE);
+ }
+ // send mail using PHP's mail() function
+ else {
+ // unset some headers because they will be added by the mail() function
+ $headers_enc = $message->headers($headers);
+ $headers_php = $message->_headers;
+ unset($headers_php['To'], $headers_php['Subject']);
+
+ // reset stored headers and overwrite
+ $message->_headers = array();
+ $header_str = $message->txtHeaders($headers_php);
+
+ // #1485779
+ if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
+ if (preg_match_all('/<([^@]+@[^>]+)>/', $headers_enc['To'], $m)) {
+ $headers_enc['To'] = implode(', ', $m[1]);
+ }
+ }
+
+ $msg_body = $message->get();
+
+ if (PEAR::isError($msg_body))
+ raise_error(array('code' => 650, 'type' => 'php',
+ 'file' => __FILE__, 'line' => __LINE__,
+ 'message' => "Could not create message: ".$msg_body->getMessage()),
+ TRUE, FALSE);
+ else {
+ $delim = $RCMAIL->config->header_delimiter();
+ $to = $headers_enc['To'];
+ $subject = $headers_enc['Subject'];
+ $header_str = rtrim($header_str);
+
+ if ($delim != "\r\n") {
+ $header_str = str_replace("\r\n", $delim, $header_str);
+ $msg_body = str_replace("\r\n", $delim, $msg_body);
+ $to = str_replace("\r\n", $delim, $to);
+ $subject = str_replace("\r\n", $delim, $subject);
+ }
+
+ if (ini_get('safe_mode'))
+ $sent = mail($to, $subject, $msg_body, $header_str);
+ else
+ $sent = mail($to, $subject, $msg_body, $header_str, "-f$from");
+ }
+ }
+
+ if ($sent) {
+ $RCMAIL->plugins->exec_hook('message_sent', array('headers' => $headers, 'body' => $msg_body));
+
+ // remove MDN headers after sending
+ unset($headers['Return-Receipt-To'], $headers['Disposition-Notification-To']);
+
+ // get all recipients
+ if ($headers['Cc'])
+ $mailto .= $headers['Cc'];
+ if ($headers['Bcc'])
+ $mailto .= $headers['Bcc'];
+ if (preg_match_all('/<([^@]+@[^>]+)>/', $mailto, $m))
+ $mailto = implode(', ', array_unique($m[1]));
+
+ if ($CONFIG['smtp_log']) {
+ write_log('sendmail', sprintf("User %s [%s]; Message for %s; %s",
+ $RCMAIL->user->get_username(),
+ $_SERVER['REMOTE_ADDR'],
+ $mailto,
+ !empty($smtp_response) ? join('; ', $smtp_response) : ''));
+ }
+ }
+
+ if (is_resource($msg_body)) {
+ fclose($msg_body);
+ }
+
+ $message->_headers = array();
+ $message->headers($headers);
+
+ return $sent;
+}
+
+
+// Returns unique Message-ID
+function rcmail_gen_message_id()
+{
+ global $RCMAIL;
+
+ $local_part = md5(uniqid('rcmail'.mt_rand(),true));
+ $domain_part = $RCMAIL->user->get_username('domain');
+
+ // Try to find FQDN, some spamfilters doesn't like 'localhost' (#1486924)
+ if (!preg_match('/\.[a-z]+$/i', $domain_part)) {
+ if (($host = preg_replace('/:[0-9]+$/', '', $_SERVER['HTTP_HOST']))
+ && preg_match('/\.[a-z]+$/i', $host)) {
+ $domain_part = $host;
+ }
+ else if (($host = preg_replace('/:[0-9]+$/', '', $_SERVER['SERVER_NAME']))
+ && preg_match('/\.[a-z]+$/i', $host)) {
+ $domain_part = $host;
+ }
+ }
+
+ return sprintf('<%s@%s>', $local_part, $domain_part);
+}
+
+
+// Returns RFC2822 formatted current date in user's timezone
+function rcmail_user_date()
+{
+ global $RCMAIL, $CONFIG;
+
+ // get user's timezone
+ $tz = $RCMAIL->config->get_timezone();
+
+ $date = time() + $tz * 60 * 60;
+ $date = gmdate('r', $date);
+ $tz = sprintf('%+05d', intval($tz) * 100 + ($tz - intval($tz)) * 60);
+ $date = preg_replace('/[+-][0-9]{4}$/', $tz, $date);
+
+ return $date;
+}
+
+
+/**
+ * Check if working in SSL mode
+ *
+ * @param integer HTTPS port number
+ * @param boolean Enables 'use_https' option checking
+ * @return boolean
+ */
+function rcube_https_check($port=null, $use_https=true)
+{
+ global $RCMAIL;
+
+ if (!empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) != 'off')
+ return true;
+ if (!empty($_SERVER['HTTP_X_FORWARDED_PROTO']) && strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']) == 'https')
+ return true;
+ if ($port && $_SERVER['SERVER_PORT'] == $port)
+ return true;
+ if ($use_https && isset($RCMAIL) && $RCMAIL->config->get('use_https'))
+ return true;
+
+ return false;
+}
+
+
+/**
+ * For backward compatibility.
+ *
+ * @global rcmail $RCMAIL
+ * @param string $var_name Variable name.
+ * @return void
+ */
+function rcube_sess_unset($var_name=null)
+{
+ global $RCMAIL;
+
+ $RCMAIL->session->remove($var_name);
+}
+
+
+/**
+ * Replaces hostname variables
+ *
+ * @param string $name Hostname
+ * @param string $host Optional IMAP hostname
+ * @return string
+ */
+function rcube_parse_host($name, $host='')
+{
+ // %n - host
+ $n = preg_replace('/:\d+$/', '', $_SERVER['SERVER_NAME']);
+ // %d - domain name without first part, e.g. %n=mail.domain.tld, %d=domain.tld
+ $d = preg_replace('/^[^\.]+\./', '', $n);
+ // %h - IMAP host
+ $h = $_SESSION['imap_host'] ? $_SESSION['imap_host'] : $host;
+ // %z - IMAP domain without first part, e.g. %h=imap.domain.tld, %z=domain.tld
+ $z = preg_replace('/^[^\.]+\./', '', $h);
+ // %s - domain name after the '@' from e-mail address provided at login screen. Returns FALSE if an invalid email is provided
+ if ( strpos($name, '%s') !== false ){
+ $user_email = rcube_idn_convert(get_input_value('_user', RCUBE_INPUT_POST), true);
+ if ( preg_match('/(.*)@([a-z0-9\.\-\[\]\:]+)/i', $user_email, $s) < 1 || filter_var($s[1]."@".$s[2], FILTER_VALIDATE_EMAIL) === false )
+ return false;
+ }
+
+ $name = str_replace(array('%n', '%d', '%h', '%z', '%s'), array($n, $d, $h, $z, $s[2]), $name);
+ return $name;
+}
+
+
+/**
+ * E-mail address validation
+ *
+ * @param string $email Email address
+ * @param boolean $dns_check True to check dns
+ * @return boolean
+ */
+function check_email($email, $dns_check=true)
+{
+ // Check for invalid characters
+ if (preg_match('/[\x00-\x1F\x7F-\xFF]/', $email))
+ return false;
+
+ // Check for length limit specified by RFC 5321 (#1486453)
+ if (strlen($email) > 254)
+ return false;
+
+ $email_array = explode('@', $email);
+
+ // Check that there's one @ symbol
+ if (count($email_array) < 2)
+ return false;
+
+ $domain_part = array_pop($email_array);
+ $local_part = implode('@', $email_array);
+
+ // from PEAR::Validate
+ $regexp = '&^(?:
+ ("\s*(?:[^"\f\n\r\t\v\b\s]+\s*)+")| #1 quoted name
+ ([-\w!\#\$%\&\'*+~/^`|{}=]+(?:\.[-\w!\#\$%\&\'*+~/^`|{}=]+)*)) #2 OR dot-atom (RFC5322)
+ $&xi';
+
+ if (!preg_match($regexp, $local_part))
+ return false;
+
+ // Check domain part
+ if (preg_match('/^\[*(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}\]*$/', $domain_part))
+ return true; // IP address
+ else {
+ // If not an IP address
+ $domain_array = explode('.', $domain_part);
+ if (sizeof($domain_array) < 2)
+ return false; // Not enough parts to be a valid domain
+
+ foreach ($domain_array as $part)
+ if (!preg_match('/^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])|([A-Za-z0-9]))$/', $part))
+ return false;
+
+ if (!$dns_check || !rcmail::get_instance()->config->get('email_dns_check'))
+ return true;
+
+ if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN' && version_compare(PHP_VERSION, '5.3.0', '<')) {
+ $lookup = array();
+ @exec("nslookup -type=MX " . escapeshellarg($domain_part) . " 2>&1", $lookup);
+ foreach ($lookup as $line) {
+ if (strpos($line, 'MX preference'))
+ return true;
+ }
+ return false;
+ }
+
+ // find MX record(s)
+ if (getmxrr($domain_part, $mx_records))
+ return true;
+
+ // find any DNS record
+ if (checkdnsrr($domain_part, 'ANY'))
+ return true;
+ }
+
+ return false;
+}
+
+/*
+ * Idn_to_ascii wrapper.
+ * Intl/Idn modules version of this function doesn't work with e-mail address
+ */
+function rcube_idn_to_ascii($str)
+{
+ return rcube_idn_convert($str, true);
+}
+
+/*
+ * Idn_to_ascii wrapper.
+ * Intl/Idn modules version of this function doesn't work with e-mail address
+ */
+function rcube_idn_to_utf8($str)
+{
+ return rcube_idn_convert($str, false);
+}
+
+function rcube_idn_convert($input, $is_utf=false)
+{
+ if ($at = strpos($input, '@')) {
+ $user = substr($input, 0, $at);
+ $domain = substr($input, $at+1);
+ }
+ else {
+ $domain = $input;
+ }
+
+ $domain = $is_utf ? idn_to_ascii($domain) : idn_to_utf8($domain);
+
+ if ($domain === false) {
+ return '';
+ }
+
+ return $at ? $user . '@' . $domain : $domain;
+}
+