fix(vpn): handle non-file url on openvpn import

So openvpn import called to_file_path().unwrap(), which panics when the
file picker hands back a non-file:// url (sandboxed portal, etc). the
wireguard branch right above already handles this gracefully, so do the
same: return a Message::Error with a new OpenVpnConfigPath kind instead
of crashing.

Fixes #1896

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Signed-off-by: James A DellaMorte <dellamorte.james@comcast.net>
Co-authored-by: James A DellaMorte <dellamorte.james@comcast.net>

cosmic-settings/src/pages/networking/vpn/mod.rs

@@ -95,6 +95,7 @@ pub enum ErrorKind {
     ConnectionEditor,
     ConnectionSettings,
     DbusConnection,
+    OpenVpnConfigPath,
     UpdatingState,
     WireGuardConfigPath,
     WireGuardDevice,
@@ -109,6 +110,7 @@ impl ErrorKind {
             ErrorKind::ConnectionEditor => fl!("vpn-error", "connection-editor"),
             ErrorKind::ConnectionSettings => fl!("vpn-error", "connection-settings"),
             ErrorKind::DbusConnection => fl!("dbus-connection-error"),
+            ErrorKind::OpenVpnConfigPath => fl!("vpn-error", "openvpn-config-path"),
             ErrorKind::UpdatingState => fl!("vpn-error", "updating-state"),
             ErrorKind::WireGuardConfigPath => fl!("vpn-error", "wireguard-config-path"),
             ErrorKind::WireGuardDevice => fl!("vpn-error", "wireguard-device"),
@@ -1199,8 +1201,14 @@ fn add_network() -> Task<crate::app::Message> {
 
                         return Message::AddWireGuardDevice(device, filename.to_owned(), path);
                     } else {
-                        super::nm_add_vpn_file("openvpn", response.url().to_file_path().unwrap())
-                            .await
+                        let Ok(path) = response.url().to_file_path() else {
+                            return Message::Error(
+                                ErrorKind::OpenVpnConfigPath,
+                                fl!("vpn-error", "openvpn-config-path-desc"),
+                            );
+                        };
+
+                        super::nm_add_vpn_file("openvpn", path).await
                     };
 
                     match result {

i18n/en/cosmic_settings.ftl

@@ -198,6 +198,8 @@ vpn-error = VPN Error
     .connect = Failed to connect to VPN
     .connection-editor = Connection editor failed
     .connection-settings = Failed to get settings for active connections
+    .openvpn-config-path = Invalid file path for OpenVPN config
+    .openvpn-config-path-desc = Chosen file must be on a local file system.
     .updating-state = Failed to update network manager state
     .wireguard-config-path = Invalid file path for WireGuard config
     .wireguard-config-path-desc = Chosen file must be on a local file system.