fake-mac-address v1.1-rc3

* dev:
  Checks if configuration parameters are set.
  Removes shebang from main body.
  Fixes unbound variables.
  Fixes fma::flow::linux::preflight_checks().

fake-mac-address

@@ -91,8 +91,6 @@ fi
 
 # -- main program -------------------------------------------------------------
 
-#! /usr/bin/env bash
-
 fma::flow::preflight_checks
 
 fma::flow::fake_mac_address

libs/flow

@@ -4,6 +4,9 @@ function fma::flow::preflight_checks() {
     echo
     echo "Pre-flight checks"
 
+    echo "› checking configuration"
+    fma::flow::check_configuration
+
     echo "› checking interface ${affected_interface}"
     fma::network::interface_exists "${affected_interface}"
 
@@ -28,4 +31,14 @@ function fma::flow::fake_mac_address() {
     fma::network::check_mac_address_after "${affected_interface}" "${fake_mac_address}"
 }
 
+function fma::flow::check_configuration() {
+    if [[ -z "${affected_interface+x}" ]]; then
+        fma::utils::terminate "Configuration parametr [affected_interface] is not set."
+    fi
+
+    if [[ -z "${fake_mac_address+x}" ]]; then
+        fma::utils::terminate "Configuration parametr [fake_mac_address] is not set."
+    fi
 
+    fma::utils::success "Configuration is set."
+}

libs/flow.linux

@@ -3,7 +3,7 @@
 function fma::flow::linux::preflight_checks() {
     echo "› checking installed dependencies "
 
-    if ! fma::utils::is_installed "macchanger"; then
+    if fma::utils::is_installed "macchanger"; then
         fma::utils::success "macchanger is installed"
     else
         fma::utils::fail "macchanger is not installed"

libs/network

@@ -50,15 +50,15 @@ function fma::network::start_affected_interface() {
 
     sudo ifconfig "${interface_to_start}" up
 
-    fma::utils::report_status "starting interface ${interface_to_restart}"
+    fma::utils::report_status "starting interface ${interface_to_start}"
 }
 
 function fma::network::stop_affected_interface() {
     local interface_to_stop="${1}"
 
     sudo ifconfig "${interface_to_stop}" down
 
-    fma::utils::report_status "stopping interface ${interface_to_restart}"
+    fma::utils::report_status "stopping interface ${interface_to_stop}"
 }
 
 function fma::network::restart_affected_interface() {