- Add ip library,

- Move ip low level functions to ip library,
- Add libs RPM package.

lib/rx3/ip.bash

@@ -0,0 +1,145 @@
+#!/bin/bash
+#-----------------------------------------------------------------------------------------------------------------------------------
+# 
+# Rx3 IP Library
+# 
+# Copyright (C) 2025-2026 Arnaud G. GIBERT
+# mailto:arnaud@rx3.net
+# 
+# This is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published
+# by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Lesser General Public License for more details.
+# 
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; If not, see
+# <https://www.gnu.org/licenses/>.
+# 
+#-----------------------------------------------------------------------------------------------------------------------------------
+
+if [[ "${RX3_IP_LIB}" != "" ]]
+then
+    return
+else
+    declare -g RX3_IP_LIB=1
+fi
+
+
+
+#-----------------------------------------------------------------------------------------------------------------------------------
+# Includes
+#-----------------------------------------------------------------------------------------------------------------------------------
+
+: "${RX3_LIB_DIR:=/usr/lib/rx3}"
+. "${RX3_LIB_DIR}/base.bash"
+
+
+
+
+
+#-----------------------------------------------------------------------------------------------------------------------------------
+# Global Variable
+#-----------------------------------------------------------------------------------------------------------------------------------
+
+
+
+
+
+#--------------------------------------------------------------------------------------------------------------------------
+# Is Valid Ip
+#--------------------------------------------------------------------------------------------------------------------------
+
+ip_is_valid_ip()
+{
+    local ip=$1
+    local regex='^([0-9]{1,3}\.){3}[0-9]{1,3}$'
+    
+
+    if [[ $ip =~ $regex ]]
+    then
+        IFS='.' read -r o1 o2 o3 o4 <<< "$ip"
+	
+        for octet in $o1 $o2 $o3 $o4
+	do
+            if (( octet < 0 || octet > 255 ))
+	    then
+                return 1
+            fi
+        done
+	
+        return 0
+    else
+        return 1
+    fi
+}
+
+
+
+
+
+#--------------------------------------------------------------------------------------------------------------------------
+# Ip To Num
+#--------------------------------------------------------------------------------------------------------------------------
+
+ip_ip_to_num()
+{
+    local ip="$1"
+    local a
+    local b
+    local c
+    local d
+    
+    IFS=. read -r a b c d <<< "${ip}"
+    
+    echo $(( (a << 24) + (b << 16) + (c << 8) + d ))
+}
+
+
+
+
+
+#--------------------------------------------------------------------------------------------------------------------------
+# Num To Ip
+#--------------------------------------------------------------------------------------------------------------------------
+
+ip_num_to_ip()
+{
+    local num="$1"
+
+    
+    # Optional safety check
+    if (( num < 0 || num > 4294967295 ))
+    then
+        echo_error "num_to_ip: value out of range (0‑4294967295)"
+        return 1
+    fi
+
+    # Extract each byte by shifting and masking
+    local a=$(( (num >> 24) & 255 ))
+    local b=$(( (num >> 16) & 255 ))
+    local c=$(( (num >>  8) & 255 ))
+    local d=$((  num        & 255 ))
+
+    printf '%d.%d.%d.%d\n' "$a" "$b" "$c" "$d"
+}
+
+
+
+
+
+#-----------------------------------------------------------------------------------------------------------------------------------
+# IP Filter
+#-----------------------------------------------------------------------------------------------------------------------------------
+
+ip_ip_filter()
+{
+    grep -E '^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$'
+}
+
+
+