Fix incompatibility introduced in PR #4.

Closes #88.

composer.json

@@ -8,7 +8,7 @@
     "authors": [
         {
             "name": "Boris Gulay",
-            "email": "boris@boressoft.ru",
+            "email": "boris@gulay.name",
             "role": "Developer"
         }
     ],

ident_switch.php

@@ -4,7 +4,7 @@
  *
  * This plugin allows fast switching between accounts.
  *
- * @version 1.0
+ * @version 4.4.2
  * @author Boris Gulay
  * @url 
  */
@@ -69,7 +69,7 @@ class ident_switch extends rcube_plugin
 		{
 			$defaultKey = $type . '_mbox_default' . self::MY_POSTFIX;
 			$otherKey = $type . '_mbox' . self::MY_POSTFIX;
-			$val = $_SESSION[$otherKey] ? $_SESSION[$otherKey] : $_SESSION[$defaultKey];
+			$val = isset($_SESSION[$otherKey]) ? $_SESSION[$otherKey] : $_SESSION[$defaultKey];
 			$rc->config->set($type . '_mbox', $val);
 		}
 
@@ -107,7 +107,7 @@ class ident_switch extends rcube_plugin
 		elseif (ctype_digit($iid_s))
 			$iid = intval($iid_s);
 		
-		$accNames = array($_SESSION['global_alias'] ? $_SESSION['global_alias'] : $rc->user->data['username']);
+		$accNames = array(isset($_SESSION['global_alias']) ? $_SESSION['global_alias'] : $rc->user->data['username']);
 		$accValues = array(-1);
 		$accSelected = -1;
 
@@ -159,7 +159,20 @@ class ident_switch extends rcube_plugin
 	{
 		$iid = $_SESSION['iid' . self::MY_POSTFIX];
 		if (!is_numeric($iid) || $iid == -1)
+		{
+			self::write_log('no identity switch is selected... trying to find related smtp server from the from header');
+			$requestFrom = rcube_utils::get_input_value('_from', rcube_utils::INPUT_POST);
+			if (empty($requestFrom)) {
+				self::write_log('no _from post parameter found... falling back to original default config');
 				return $args;
+			} else {
+				$iid = intval($requestFrom);
+				if ($iid == 0) {
+					self::write_log('falling back to original default config as _from post field is no integer: ' . $_POST['_from']); 
+					return $args;
+				}
+			}
+		}
 
 		$rc = rcmail::get_instance();
 
@@ -179,16 +192,32 @@ class ident_switch extends rcube_plugin
 
 			$args['smtp_user'] = $r['username'];
 			$args['smtp_pass'] = $r['smtp_auth'] == self::SMTP_AUTH_IMAP ? $rc->decrypt($r['password']) : '';
-			$args['smtp_server'] = $r['smtp_host'] ? $r['smtp_host'] : 'localhost'; // Default SMTP host here
-			$args['smtp_port'] = $r['smtp_port'] ? $r['smtp_port'] : 587; // Default SMTP port here
+
+			# In 1.6 smtp_server was renamed to smtp_host and includes port. smtp_port was depricated.
+			$verParts = explode('.', RCMAIL_VERSION, 3);
+			$paramSmtpHost = 'smtp_host';
+			$paramSmtpPort = null;
+			if (intval($verParts[0]) <= 1 && intval($verParts[1]) < 6)
+			{
+				$paramSmtpHost = 'smtp_server';
+				$paramSmtpPort = 'smtp_port';
+			}
+
+			$args[$paramSmtpHost] = $r['smtp_host'] ? $r['smtp_host'] : 'localhost'; // Default SMTP host here
 
 			if ($r['flags'] & self::DB_SECURE_IMAP_TLS)
 			{
-				if (strpos($args['smtp_server'], ':') !== false)
+				if (strpos($args[$paramSmtpHost], ':') !== false)
 					self::write_log('SMTP server already contains protocol, ignoring TLS flag.');
 				else
-					$args['smtp_server'] = 'tls://' . $args['smtp_server'];
+					$args[$paramSmtpHost] = 'tls://' . $args[$paramSmtpHost];
 			}
+
+			$smtpPort = $r['smtp_port'] ? $r['smtp_port'] : 587; // Default SMTP port here
+			if ($paramSmtpPort)
+				$args[$paramSmtpPort] = $smtpPort;
+			else
+				$args[$paramSmtpHost] .= ':' . $smtpPort;
 		}
 
 		return $args;
@@ -658,6 +687,8 @@ class ident_switch extends rcube_plugin
 					$rc->session->remove($k);
 				}
 			}
+			$delimiter = isset($config['imap_delimiter']) ? $config['imap_delimiter']:'.';
+            $_SESSION['imap_delimiter'] = $delimiter;
 			$_SESSION['username'] = $rc->user->data['username'];
 			$_SESSION['password'] = $_SESSION['password' . self::MY_POSTFIX];
 			$_SESSION['iid' . self::MY_POSTFIX] = -1;
@@ -665,7 +696,7 @@ class ident_switch extends rcube_plugin
 			foreach (rcube_storage::$folder_types as $type)
 			{
 				$otherKey = $type . '_mbox' . self::MY_POSTFIX;
-				if ($_SESSION[$otherKey])
+				if (isset($_SESSION[$otherKey]))
 					$rc->session->remove($otherKey);
 			}
 		}
@@ -693,7 +724,7 @@ class ident_switch extends rcube_plugin
 					{
 						if (strncasecmp($k, 'storage', 7) === 0 && substr_compare($k, self::MY_POSTFIX, -$my_postfix_len, $my_postfix_len) !== 0)
 						{
-							if (!$_SESSION[$k . self::MY_POSTFIX])
+							if (!isset($_SESSION[$k . self::MY_POSTFIX]))
 								$_SESSION[$k . self::MY_POSTFIX] = $_SESSION[$k];
 
 							$rc->session->remove($k);
@@ -703,7 +734,7 @@ class ident_switch extends rcube_plugin
 					$moreToSave = array('password', 'imap_delimiter');
 					foreach ($moreToSave as $k)
 					{
-						if (!$_SESSION[$k . self::MY_POSTFIX])
+						if (!isset($_SESSION[$k . self::MY_POSTFIX]))
 							$_SESSION[$k . self::MY_POSTFIX] = $_SESSION[$k];
 
 						$rc->session->remove($k);
@@ -724,7 +755,7 @@ class ident_switch extends rcube_plugin
 				if ($ssl && strncasecmp($host, $hostProtocol, strlen($hostProtocol)) !== 0)
 					$host = $hostProtocol . $host;
 
-				$delimiter = $r['imap_delimiter'] ? $r['imap_delimiter'] : '.'; // Default delimiter here
+				$delimiter = isset($r['imap_delimiter']) ? $r['imap_delimiter'] : '.'; // Default delimiter here
 
 				$_SESSION['storage_host'] = $host;
 				$_SESSION['storage_ssl'] = $ssl;
@@ -736,7 +767,7 @@ class ident_switch extends rcube_plugin
 
 				foreach (rcube_storage::$folder_types as $type)
 				{
-					if ($r[$type . '_mbox']) {
+					if (isset($r[$type . '_mbox'])) {
 						$otherKey = $type . '_mbox' . self::MY_POSTFIX;
 						$_SESSION[$otherKey] = $r[$type . '_mbox'];
 					}