Minor rfkill refactorization

Testing whether transmission is blocked at all is now possible through

    [[ -n $(rf_status "$Interface" "$RFKill") ]]

src/lib/connections/wireless

@@ -19,7 +19,7 @@ wireless_up() {
     : ${TimeoutWPA:=15}
 
     if [[ $RFKill ]]; then
-        enable_rf "$Interface" "$RFKill" || return 1
+        rf_enable "$Interface" "$RFKill" || return 1
     fi
 
     # Kill any lingering WPA supplicants
@@ -73,7 +73,7 @@ wireless_down() {
     wpa_stop "$Interface"
     bring_interface_down "$Interface" || return 1
     if [[ $RFKill ]]; then
-        disable_rf "$Interface" "$RFKill"
+        rf_disable "$Interface" "$RFKill"
     fi
 }
 

src/lib/rfkill

@@ -4,7 +4,7 @@
 ## Determine the system interface of an rfkill device
 # $1: interface name
 # $2: rfkill name
-get_rf_path() {
+rf_get_path() {
     local interface=$1 rfkill_name=${2:-auto} path
 
     if [[ $rfkill_name == "auto" ]]; then
@@ -26,33 +26,44 @@ get_rf_path() {
     return 1
 }
 
-## Unblock transmission through a wireless device
+## Determine the blocking status of an rfkill device
 # $1: interface name
 # $2: rfkill name
-enable_rf() {
-    local interface=$1 rfkill=$2 path hard soft
+rf_status() {
+    local path
+    path=$(rf_get_path "$@") || return 1
 
-    path=$(get_rf_path "$interface" "$rfkill") || return 1
-    read hard < "$path/hard"
-    read soft < "$path/soft"
+    if (( $(< "$path/hard" ) )); then
+        echo "hard"
+    elif (( $(< "$path/soft" ) )); then
+        echo "soft"
+    fi
+}
 
-    if (( hard )); then
+## Unblock transmission through a wireless device
+# $1: interface name
+# $2: rfkill name
+rf_enable() {
+    case $(rf_status "$@") in
+      hard)
         report_error "Transmission is hard-blocked on interface '$interface'"
         return 1
-    elif (( soft )); then
+      ;;
+      soft)
         report_debug "$FUNCNAME: echo 0 > '$path/soft'"
         echo 0 > "$path/soft"
         timeout_wait 1 '(( ! $(< "$path/soft") ))'
-    fi
+      ;;
+    esac
 }
 
 ## Block transmission through a wireless device
 # $1: interface name
 # $2: rfkill name
-disable_rf() {
-    local interface=$1 rfkill=$2 path
+rf_disable() {
+    local path
+    path=$(rf_get_path "$@") || return 1
 
-    path=$(get_rf_path "$interface" "$rfkill") || return 1
     report_debug "$FUNCNAME: echo 1 > '$path/soft'"
     echo 1 > "$path/soft"
     timeout_wait 1 '(( $(< "$path/soft") ))'

src/netctl-auto

@@ -177,7 +177,7 @@ start() {
         source "$PROFILE_DIR/interfaces/$interface"
     fi
     if [[ $RFKill ]]; then
-        enable_rf "$interface" "$RFKill" || return 1
+        rf_enable "$interface" "$RFKill" || return 1
     fi
 
 
@@ -227,7 +227,7 @@ stop() {
     fi
     timeout_wait 1 '! wpa_is_active "$interface"' || wpa_stop "$interface"
     ip link set dev "$interface" down
-    [[ $RFKill ]] && disable_rf "$interface" "$RFKill"
+    [[ $RFKill ]] && rf_disable "$interface" "$RFKill"
     return 0
 }