v1.1.3, added IP validation and version compare functions

functions

@@ -2,12 +2,13 @@
 # pyr0ball script functions library
 
 # Initial Vars
-functionsrev=1.1.2
+functionsrev=1.1.3
 scriptname="${0##*/}"
 rundir="${0%/*}"
 rundir_absolute=$(cd `dirname $0` && pwd)
 runuser="$(whoami)"
 pretty_date="$(date +%Y-%m-%d_%H-%M-%S)"
+short_date="$(date +%Y-%m-%d)"
 
 # Escape characters (if your shell uses a different one, you can modify it here)
 # By default this is using the usual bash escape code
@@ -794,4 +795,75 @@ multiselect(){
 #    ((idx++))
 #done
 
+### IP validation function
+valid-ip()
+{
+    local  ip=$1
+    local  stat=1
+
+    if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+        OIFS=$IFS
+        IFS='.'
+        ip=($ip)
+        IFS=$OIFS
+        [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
+            && ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
+        stat=$?
+    fi
+    return $stat
+}
+
+# Version comparison function
+# usage: 
+# vercomp [first version] [second version]
+# output:
+# 0 = 
+# 1 >
+# 2 <
+vercomp() {
+    if [[ $1 == $2 ]]
+    then
+        return 0
+    fi
+    local IFS=.
+    local i ver1=($1) ver2=($2)
+    # fill empty fields in ver1 with zeros
+    for ((i=${#ver1[@]}; i<${#ver2[@]}; i++))
+    do
+        ver1[i]=0
+    done
+    for ((i=0; i<${#ver1[@]}; i++))
+    do
+        if [[ -z ${ver2[i]} ]]
+        then
+            # fill empty fields in ver2 with zeros
+            ver2[i]=0
+        fi
+        if ((10#${ver1[i]} > 10#${ver2[i]}))
+        then
+            return 1
+        fi
+        if ((10#${ver1[i]} < 10#${ver2[i]}))
+        then
+            return 2
+        fi
+    done
+    return 0
+}
+
+compare-versions() {
+    vercomp $1 $2
+    case $? in
+        0) op='=';;
+        1) op='>';;
+        2) op='<';;
+    esac
+    if [[ $op != $3 ]]
+    then
+        echo "Fail: Expected '$3', Actual '$op', Arg1 '$1', Arg2 '$2'"
+    else
+        echo "Pass: '$1 $op $2'"
+    fi
+}
+
 set-boxtype