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|
#! /bin/sh
#
# usage: with cac ./generate-networking-configuration c838-828 cd
#
set -euf
cac_servername=$1
hostname=$2
# This is somewhat required because cloudatcost requires whitelisting
# of hosts. If you whitelist your localhost, then leave this empty.
# cac_via=
#
# cac_key=
# cac_login=
# cac_servername=
# hostname=
main() {
listservers=$(cac_listservers)
listserversstatus=$(echo $listservers | jq -r .status)
case $listserversstatus in
ok) : ;;
*)
echo $0: bad listservers status: $listserversstatus >&2
exit 1
esac
config=$(echo $listservers \
| jq -r ".data|map(select(.servername == \"$cac_servername\"))[]")
serverstatus=$(echo $config | jq -r .status)
case $serverstatus in
'Powered On') : ;;
*)
echo $0: bad server status: $serverstatus >&2
exit 2
esac
print_networking_configuraton "$config"
}
cac_listservers() {
if test -z "${cac_via-}"; then
curl -fsS \
"https://panel.cloudatcost.com/api/v1/listservers.php?key=$cac_key\&login=$cac_login"
else
ssh -q $cac_via -t curl -fsS \
"https://panel.cloudatcost.com/api/v1/listservers.php?key=$cac_key\\&login=$cac_login"
fi
}
print_networking_configuraton() {
config=$1
address=$(echo $config | jq -r .ip)
gateway=$(echo $config | jq -r .gateway)
nameserver=8.8.8.8
netmask=$(echo $config | jq -r .netmask)
prefixLength=$(netmaskToPrefixLengh $netmask)
# TODO generate all config and put it into a temp dir, then rsync that
#
# upload configuration (to /root)
#
printf '{...}:\n'
printf '{\n'
printf ' networking.hostName = "%s";\n' $hostname
printf ' networking.interfaces.enp2s1.ip4 = [\n'
printf ' {\n'
printf ' address = "%s";\n' $address
printf ' prefixLength = %d;\n' $prefixLength
printf ' }\n'
printf ' ];\n'
printf ' networking.defaultGateway = "%s";\n' $gateway
printf ' networking.nameservers = [\n'
printf ' "%s"\n' $nameserver
printf ' ];\n'
printf '}\n'
}
netmaskToPrefixLengh() {
binaryNetmask=$(echo $1 | sed 's/^/obase=2;/;s/\./;/g' | bc | tr -d \\n)
binaryPrefix=$(echo $binaryNetmask | sed -n 's/^\(1*\)0*$/\1/p')
if ! echo $binaryPrefix | grep -q .; then
echo $0: bad netmask: $netmask >&2
exit 4
fi
printf %s $binaryPrefix | tr -d 0 | wc -c
}
main "$@"
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