Last active
January 29, 2020 22:17
-
-
Save rjsocha/b25d5d03533c9226d6cea914093832fb to your computer and use it in GitHub Desktop.
BASH support library
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
function trim-string() { | |
local _var="$1" | |
_var="${_var#"${_var%%[![:space:]]*}"}" # remove leading whitespace characters | |
_var="${_var%"${_var##*[![:space:]]}"}" # remove trailing whitespace characters | |
echo -n "$_var" | |
} | |
function dns-query() { | |
local _r | |
if [[ -n $1 ]] | |
then | |
_r=$(getent hosts $1) || true | |
echo "$(trim-string ${_r% *})" | |
fi | |
} | |
function is_ip() { | |
local _regex="^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$" | |
if [[ $# -eq 1 ]] | |
then | |
if [[ "$1" =~ ${_regex} ]] | |
then | |
return 0 | |
fi | |
fi | |
return 1 | |
} | |
function is_ipv6() { | |
local _regex="^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$" | |
if [[ $# -eq 1 ]] | |
then | |
if [[ "$1" =~ ${_regex} ]] | |
then | |
return 0 | |
fi | |
fi | |
return 1 | |
} | |
function is_ip_with_prefix { | |
regex="^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])/(3[012]|[12]?[0-9])$" | |
[ $# -eq 1 ] && { | |
[[ "$1" =~ $regex ]] && return 0 | |
} | |
return 1 | |
} | |
function is_ipv6_with_prefix { | |
regex="^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))/([0-9]+)$" | |
[ $# -eq 1 ] && { | |
[[ "$1" =~ $regex ]] && return 0 | |
} | |
return 1 | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment