OpenVPN server improve handling of authmode

Currently if the user is clicking around while they are setting up an OpenVPN server, they can do stuff like this:
a) Select Server Mode - Remote Access (SSL/TLS + User Auth)
b) Select something in Backend for authentication
c) Change their mind and select Server Mode - Peer to Peer (SSL/TLS)
d) Enter the other settings and Save
Now the OpenVPN server config has an 'authmode' key in it.
Probably does no harm, I suspect it will simply not be used when building the server.conf for Peer to Peer, but it looks a bit odd when analysing/diagnosing a config for problems.
Other fields that are mode-specific have tests to only save the values at the end if the appropriate mode is the one finally selected.

While I am here, I also constantly forget to click on "Local Database" authmode when setting up a new server. It gives the validation error message, then I click on "Local Database" again and save. Seems unnecessary - when defining a new OpenVPN server why not default this to have the first entry in the list be the one selected? So I did that. What do you think? 1 place less for many users to need to click.

1 files changed, 6 insertions, 2 deletions

diff --git a/usr/local/www/vpn_openvpn_server.php b/usr/local/www/vpn_openvpn_server.php
index 0777cb6..cb381564 100644
--- a/usr/local/www/vpn_openvpn_server.php
+++ b/usr/local/www/vpn_openvpn_server.php
@@ -370,7 +370,7 @@ if ($_POST) {
 		if ($_POST['disable'] == "yes")
 			$server['disable'] = true;
 		$server['mode'] = $pconfig['mode'];
-		if (!empty($pconfig['authmode']))
+		if (!empty($pconfig['authmode']) && (($pconfig['mode'] == "server_user") || ($pconfig['mode'] == "server_tls_user")))
 			$server['authmode'] = implode(",", $pconfig['authmode']);
 		$server['protocol'] = $pconfig['protocol'];
 		$server['dev_mode'] = $pconfig['dev_mode'];
@@ -798,9 +798,13 @@ if ($savemsg)
 						<td width="22%" valign="top" class="vncellreq"><?=gettext("Backend for authentication");?></td>
 						<td width="78%" class="vtable">
 							<select name='authmode[]' id='authmode' class="formselect" multiple="multiple" size="<?php echo count($auth_servers); ?>">
-							<?php $authmodes = explode(",", $pconfig['authmode']); ?>
 							<?php
+								$authmodes = explode(",", $pconfig['authmode']);
 								$auth_servers = auth_get_authserver_list();
+								// If no authmodes set then default to selecting the first entry in auth_servers
+								if (empty($authmodes[0]) && !empty(key($auth_servers)))
+									$authmodes[0] = key($auth_servers);
+
 								foreach ($auth_servers as $auth_server_key => $auth_server):
 									$selected = "";
 									if (in_array($auth_server_key, $authmodes))