Start the socket file. Add file validation and cleanup

diyvpn.sh

@@ -5,17 +5,33 @@ opdir="${1?Output dir missing}"
 
 : "${HOME?HOME is not set}"
 
+check_file_exists() {
+	if [[ -f "$1" ]]; then
+		return 0
+	fi
+	echo "Warning: File does not exist- $1"
+	return 1
+}
+
 script_dir=$(dirname "$(realpath "$0")")
 common_ssh_cfg_path="${DIYVPN_SSH_CFG:-$script_dir/common_sshconfig}"
 diyvpn_cfg="${DIYVPN_CFG:-$HOME/.config/diyvpn/servers}"
 
+check_file_exists "$common_ssh_cfg_path"
+
 generate() {
 	local cfgpath name server_ssh_cfg idle_timeout listen_address
 	cfgpath="$1"
 	name=$(basename "$cfgpath" | tr -d '[:space:]')
-	server_ssh_cfg="$cfgpath"/ssh_config # TODO validate
 
-	source "$cfgpath/config.rc"
+	server_ssh_cfg="$cfgpath"/ssh_config
+	server_config_rc="$cfgpath"/config.rc
+
+	check_file_exists "$server_ssh_cfg" || return 0
+	check_file_exists "$server_config_rc" || return 0
+
+	# shellcheck disable=SC1091
+	source "server_config_rc"
 
 	idle_timeout="${IDLE_TIMEOUT:-10min}"
 	listen_address="${LISTEN_ADDRESS:?LISTEN_ADDRESS should be set}"