- Add support for IMAP proxy authentication (#1486690)

CHANGELOG

@@ -44,7 +44,8 @@ CHANGELOG Roundcube Webmail
 - Add SASL-IR support in IMAP (RFC 4959)
 - Add LOGINDISABLED support (RFC 2595)
 - Add support for AUTH=PLAIN in IMAP authentication
-- Re-implemented SMTP proxy authorization support
+- Re-implemented SMTP proxy authentication support
+- Add support for IMAP proxy authentication (#1486690)
 
 RELEASE 0.4.2
 -------------

config/main.inc.php.dist

@@ -87,6 +87,12 @@ $rcmail_config['imap_force_caps'] = false;
 // IMAP connection timeout, in seconds. Default: 0 (no limit)
 $rcmail_config['imap_timeout'] = 0;
 
+// Optional IMAP authentication identifier to be used as authorization proxy
+$rcmail_config['imap_auth_cid'] = null;
+
+// Optional IMAP authentication password to be used for imap_auth_cid
+$rcmail_config['imap_auth_pw'] = null;
+
 // ----------------------------------
 // SMTP
 // ----------------------------------
@@ -120,7 +126,7 @@ $rcmail_config['smtp_auth_type'] = '';
 // Optional SMTP authentication identifier to be used as authorization proxy
 $rcmail_config['smtp_auth_cid'] = null;
 
-// Optional SMTP authorization password to be used for smtp_auth_cid
+// Optional SMTP authentication password to be used for smtp_auth_cid
 $rcmail_config['smtp_auth_pw'] = null;
 
 // SMTP HELO host 

program/include/rcmail.php

@@ -501,6 +501,8 @@ class rcmail
     // can save time detecting them using NAMESPACE and LIST
     $options = array(
       'auth_method' => $this->config->get('imap_auth_type', 'check'),
+      'auth_cid'    => $this->config->get('imap_auth_cid'),
+      'auth_pw'     => $this->config->get('imap_auth_pw'),
       'delimiter'   => isset($_SESSION['imap_delimiter']) ? $_SESSION['imap_delimiter'] : $this->config->get('imap_delimiter'),
       'rootdir'     => isset($_SESSION['imap_root']) ? $_SESSION['imap_root'] : $this->config->get('imap_root'),
       'debug_mode'  => (bool) $this->config->get('imap_debug', 0),

program/include/rcube_imap_generic.php

@@ -420,7 +420,16 @@ class rcube_imap_generic
             }
         }
         else { // PLAIN
-            $reply = base64_encode($user . chr(0) . $user . chr(0) . $pass);
+            // proxy authentication
+            if (!empty($this->prefs['auth_cid'])) {
+                $authc = $this->prefs['auth_cid'];
+                $pass  = $this->prefs['auth_pw'];
+            }
+            else {
+                $authc = $user;
+            }
+
+            $reply = base64_encode($user . chr(0) . $authc . chr(0) . $pass);
 
             // RFC 4959 (SASL-IR): save one round trip
             if ($this->getCapability('SASL-IR')) {