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expand valid_ip to allow for custom ports

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Signed-off-by: Adam Warner <me@adamwarner.co.uk>
This commit is contained in:
Adam Warner 2020-06-13 20:30:03 +01:00
parent 4b59287683
commit 95f4c632f7
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GPG key ID: 872950F3ECF2B173
1 changed files with 13 additions and 5 deletions
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18
automated install/basic-install.sh
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@ -1017,21 +1017,29 @@ valid_ip() {
local ip=${1}
local stat=1
# If the IP matches the format xxx.xxx.xxx.xxx,
if [[ "${ip}" =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
# If the IP matches the format xxx.xxx.xxx.xxx (optional port of range #0-65536), also ensure string ends with 0-9
if [[ "${ip}" =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}#{0,1}[0-9]{0,5}$ && "${ip}" =~ ^.*[0-9]$ ]]; then
# Save the old Internal Field Separator in a variable
OIFS=$IFS
# and set the new one to a dot (period)
IFS='.'
IFS='.#'
# Put the IP into an array
read -r -a ip <<< "${ip}"
# Restore the IFS to what it was
IFS=${OIFS}
## Evaluate each octet by checking if it's less than or equal to 255 (the max for each octet)
[[ "${ip[0]}" -le 255 && "${ip[1]}" -le 255 \
&& "${ip[2]}" -le 255 && "${ip[3]}" -le 255 ]]
[[ "${ip[0]}" -le 255 && "${ip[1]}" -le 255 && "${ip[2]}" -le 255 && "${ip[3]}" -le 255 ]]
# Save the exit code
stat=$?
# If there is a 5th part to the array, then it is a port number - check it is between 1 and 65536
if [[ "${ip[4]}" ]]; then
[[ "${ip[4]}" -ge 1 && "${ip[4]}" -le 65536 ]]
# Save the exit code
stat=$?
fi
fi
# Return the exit code
return "${stat}"