50 lines
1.2 KiB
Bash
50 lines
1.2 KiB
Bash
# ------------------------------------------------------------------------------
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# Determine if parameter is a valid IPv4 address
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# ------------------------------------------------------------------------------
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isipv4 ()
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{
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# Set up local variables
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local ip=$1
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# Start with a regex format test
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if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
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local old_ifs=$IFS
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IFS="."
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ip=($ip)
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IFS=$old_ifs
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if [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
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&& ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]; then
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if [[ -t 1 ]]; then
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disp "The given IPv4 is valid."
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fi
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return 0
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fi
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fi
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if [[ -t 1 ]]; then
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disp "The given parameter is NOT a valid IPv4."
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fi
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return 1
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}
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export -f isipv4
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# ------------------------------------------------------------------------------
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# Determine if parameter is a valid IPv4 address
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# ------------------------------------------------------------------------------
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isipv6 ()
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{
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local ip="$1"
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local regex='^([0-9a-fA-F]{0,4}:){1,7}[0-9a-fA-F]{0,4}$'
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if [[ $ip =~ $regex ]]; then
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if [[ -t 1 ]]; then
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disp "The given IPv6 is valid."
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fi
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return 0
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fi
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if [[ -t 1 ]]; then
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disp "The given parameter is not a valid IPv6."
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fi
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return 1
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}
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export -f isipv6
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