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lib/net.sh: add net_netmask_to_prefix

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tv 2015-05-20 22:05:38 +02:00
parent 3cc354008a
commit 1cc154e1a2
2 changed files with 12 additions and 13 deletions
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9
lib/net.sh Normal file
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@ -0,0 +1,9 @@
net_netmask_to_prefix() {(
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
)}

16
networking-configuration
View File

@ -5,6 +5,7 @@
set -euf
. ./lib/cac.sh
. ./lib/net.sh
cac_servername=$1
hostname=$2
@ -31,7 +32,7 @@ print_networking_configuraton() {
gateway=$(echo $server | jq -r .gateway)
nameserver=8.8.8.8
netmask=$(echo $server | jq -r .netmask)
prefixLength=$(netmaskToPrefixLengh $netmask)
prefix=$(net_netmask_to_prefix $netmask)
# TODO generate all config and put it into a temp dir, then rsync that
#
@ -43,7 +44,7 @@ print_networking_configuraton() {
printf ' networking.interfaces.enp2s1.ip4 = [\n'
printf ' {\n'
printf ' address = "%s";\n' $address
printf ' prefixLength = %d;\n' $prefixLength
printf ' prefixLength = %d;\n' $prefix
printf ' }\n'
printf ' ];\n'
printf ' networking.defaultGateway = "%s";\n' $gateway
@ -53,15 +54,4 @@ print_networking_configuraton() {
printf '}\n'
}
netmaskToPrefixLengh() {
binaryNetmask=$(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 $binaryPrefix | tr -d 0 | wc -c
}
main "$@"