Config File

misc/config-file.func

@@ -265,6 +265,7 @@ config_file() {
 
   local ip_cidr_regex='^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})/([0-9]{1,2})$'
   local ip_regex='^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$'
+  ip_range_regex="^([0-9]{1,3}\.){3}[0-9]{1,3}/[0-9]{1,2}-([0-9]{1,3}\.){3}[0-9]{1,3}/[0-9]{1,2}$"
 
   if [[ -n ${NET-} ]]; then
     if [ "$NET" == "dhcp" ]; then
@@ -284,8 +285,41 @@ config_file() {
         msg_error "Gateway IP Address cannot be empty"
         exit
       fi
+    elif [[ "$NET" =~ $ip_range_regex ]]; then
+      base="${BASH_REMATCH[1]}"
+      start="${BASH_REMATCH[2]}"
+      end="${BASH_REMATCH[4]}"
+      cidr="${BASH_REMATCH[3]}"
+
+      msg_info "Checking IPs from $base.$start/$cidr to $base.$end/$cidr"
+
+      for ((i=start; i<=end; i++)); do
+        ip="$base.$i"
+        if ! ping -c 1 -W 1 "$ip" > /dev/null 2>&1; then
+          NET="$ip/$cidr"
+          msg_ok "Selected unused IP: $NET"
+          break
+        fi
+      done
+
+      if [[ ! "$NET" =~ / ]]; then
+        msg_error "No free IP found in range"
+        exit 1
+      fi
+      if [ -n "$GATE" ]; then
+        if [[ "$GATE" =~ $ip_regex ]]; then
+          echo -e "${GATEWAY}${BOLD}${DGN}Gateway IP Address: ${BGN}$GATE${CL}"
+          GATE=",gw=$GATE"
         else
-      msg_error "Invalid IP Address format. Needs to be 0.0.0.0/0, was ${NET}"
+          msg_error "Invalid IP Address format for Gateway. Needs to be 0.0.0.0, was ${GATE}"
+          exit
+        fi
+      else
+        msg_error "Gateway IP Address cannot be empty"
+        exit
+      fi
+    else
+      msg_error "Invalid IP Address format. Needs to be 0.0.0.0/0 or a range like 10.0.0.1/24-10.0.0.10/24, was ${NET}"
       exit
     fi
   else