72 lines
1.6 KiB
Bash
Executable File
72 lines
1.6 KiB
Bash
Executable File
#! /bin/sh
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#
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# usage: with cac ./networking-configuration c838-828 cd
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#
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set -euf
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. ./lib/cac.sh
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cac_servername=$1
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hostname=$2
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# This is somewhat required because cloudatcost requires whitelisting
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# of hosts. If you whitelist your localhost, then leave this empty.
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# cac_via=
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#
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# cac_key=
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# cac_login=
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# cac_servername=
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# hostname=
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main() {
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listservers=$(cac_listservers)
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config=$(echo $listservers \
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| jq -r ".[]|select(.servername==\"$cac_servername\")")
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print_networking_configuraton "$config"
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}
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print_networking_configuraton() {
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config=$1
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address=$(echo $config | jq -r .ip)
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gateway=$(echo $config | jq -r .gateway)
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nameserver=8.8.8.8
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netmask=$(echo $config | jq -r .netmask)
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prefixLength=$(netmaskToPrefixLengh $netmask)
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# TODO generate all config and put it into a temp dir, then rsync that
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#
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# upload configuration (to /root)
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#
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printf '{...}:\n'
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printf '{\n'
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printf ' networking.hostName = "%s";\n' $hostname
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printf ' networking.interfaces.enp2s1.ip4 = [\n'
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printf ' {\n'
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printf ' address = "%s";\n' $address
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printf ' prefixLength = %d;\n' $prefixLength
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printf ' }\n'
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printf ' ];\n'
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printf ' networking.defaultGateway = "%s";\n' $gateway
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printf ' networking.nameservers = [\n'
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printf ' "%s"\n' $nameserver
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printf ' ];\n'
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printf '}\n'
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}
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netmaskToPrefixLengh() {
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binaryNetmask=$(echo $1 | sed 's/^/obase=2;/;s/\./;/g' | bc | tr -d \\n)
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binaryPrefix=$(echo $binaryNetmask | sed -n 's/^\(1*\)0*$/\1/p')
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if ! echo $binaryPrefix | grep -q .; then
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echo $0: bad netmask: $netmask >&2
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exit 4
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fi
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printf %s $binaryPrefix | tr -d 0 | wc -c
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}
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main "$@"
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