Allow to send mail with BCC recipients only + remove some unused vars

CHANGELOG

@@ -4,6 +4,7 @@ CHANGELOG RoundCube Webmail
 2008/02/20 (thomasb)
 ----------
 - Localize folder name in page title (#1484785)
+- Allow to send mail with BCC recipients only
 
 2008/02/12 (estadtherr)
 ----------

program/js/app.js

@@ -1695,11 +1695,14 @@ function rcube_webmail()
     {
     // check input fields
     var input_to = rcube_find_object('_to');
+    var input_cc = rcube_find_object('_cc');
+    var input_bcc = rcube_find_object('_bcc');
     var input_subject = rcube_find_object('_subject');
     var input_message = rcube_find_object('_message');
 
     // check for empty recipient
-    if (input_to && !rcube_check_email(input_to.value.replace(/^\s+/, '').replace(/[\s,;]+$/, ''), true))
+    var recipients = input_to.value ? input_to.value : (input_cc.value ? input_cc.value : input_bcc.value);
+    if (!rcube_check_email(recipients.replace(/^\s+/, '').replace(/[\s,;]+$/, ''), true))
       {
       alert(this.get_label('norecipientwarning'));
       input_to.focus();

program/steps/mail/sendmail.inc

@@ -10,7 +10,7 @@
  |                                                                       |
  | PURPOSE:                                                              |
  |   Compose a new mail message with all headers and attachments         |
- |   and send it using IlohaMail's SMTP methods or with PHP mail()       |
+ |   and send it using the PEAR::Net_SMTP class or with PHP mail()       |
  |                                                                       |
  +-----------------------------------------------------------------------+
  | Author: Thomas Bruederli <roundcube@gmail.com>                        |
@@ -129,7 +129,7 @@ $OUTPUT->framed = TRUE;
 /****** check submission and compose message ********/
 
 
-if (!$savedraft && empty($_POST['_to']) && empty($_POST['_subject']) && $_POST['_message'])
+if (!$savedraft && empty($_POST['_to']) && empty($_POST['_cc']) && empty($_POST['_bcc']) && empty($_POST['_subject']) && $_POST['_message'])
   {
   $OUTPUT->show_message("sendingfailed", 'error');
   $OUTPUT->send('iframe');
@@ -146,13 +146,19 @@ $mailto_replace = array(', ', ', ', '', ',');
 
 // replace new lines and strip ending ', '
 $mailto = preg_replace($mailto_regexp, $mailto_replace, get_input_value('_to', RCUBE_INPUT_POST, TRUE, $message_charset));
+$mailcc = preg_replace($mailto_regexp, $mailto_replace, get_input_value('_cc', RCUBE_INPUT_POST, TRUE, $message_charset));
+$mailbcc = preg_replace($mailto_regexp, $mailto_replace, get_input_value('_bcc', RCUBE_INPUT_POST, TRUE, $message_charset));
 
-// decode address strings
-$to_address_arr = $IMAP->decode_address_list($mailto);
-$identity_arr = rcmail_get_identity(get_input_value('_from', RCUBE_INPUT_POST));
+if (empty($mailto) && !empty($mailcc)) {
+  $mailto = $mailcc;
+  $mailcc = null;
+}
+else if (empty($mailto))
+  $mailto = 'undisclosed-recipients:;';
 
+// get sender name and address
+$identity_arr = rcmail_get_identity(get_input_value('_from', RCUBE_INPUT_POST));
 $from = $identity_arr['mailto'];
-$first_to = is_array($to_address_arr[0]) ? $to_address_arr[0]['mailto'] : $mailto;
 
 if (empty($identity_arr['string']))
   $identity_arr['string'] = $from;
@@ -163,11 +169,11 @@ $headers = array('Date' => date('r'),
                  'To'   => $mailto);
 
 // additional recipients
-if (!empty($_POST['_cc']))
-  $headers['Cc'] = preg_replace($mailto_regexp, $mailto_replace, get_input_value('_cc', RCUBE_INPUT_POST, TRUE, $message_charset));
+if (!empty($mailcc))
+  $headers['Cc'] = $mailcc;
 
-if (!empty($_POST['_bcc']))
-  $headers['Bcc'] = preg_replace($mailto_regexp, $mailto_replace, get_input_value('_bcc', RCUBE_INPUT_POST, TRUE, $message_charset));
+if (!empty($mailbcc))
+  $headers['Bcc'] = $mailbcc;
   
 if (!empty($identity_arr['bcc']))
   $headers['Bcc'] = ($headers['Bcc'] ? $headers['Bcc'].', ' : '') . $identity_arr['bcc'];