2 ##############################################################################
4 # This program is free software; you can redistribute it and/or modify
5 # it under the terms of the GNU General Public License version 2 as
6 # published by the Free Software Foundation.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # Copyright (C) 2016 Eric Luehrsen
15 ##############################################################################
17 # This script facilitates alternate installation of Unbound+odhcpd and no
18 # need for dnsmasq. There are some limitations, but it works and is small.
19 # The lease file is parsed to make "zone-data:" and "local-data:" entries.
21 # config odhcpd 'odhcpd'
22 # option leasetrigger '/usr/lib/unbound/odhcpd.sh'
24 ##############################################################################
27 . /usr/lib/unbound/defaults.sh
29 ##############################################################################
32 local longconf dateconf
33 local dns_ls_add=$UB_VARDIR/dhcp_dns.add
34 local dns_ls_del=$UB_VARDIR/dhcp_dns.del
35 local dhcp_ls_new=$UB_VARDIR/dhcp_lease.new
36 local dhcp_ls_old=$UB_VARDIR/dhcp_lease.old
37 local dhcp_ls_add=$UB_VARDIR/dhcp_lease.add
38 local dhcp_ls_del=$UB_VARDIR/dhcp_lease.del
40 local dhcp_link=$( uci_get unbound.@unbound[0].dhcp_link )
41 local dhcp4_slaac6=$( uci_get unbound.@unbound[0].dhcp4_slaac6 )
42 local dhcp_domain=$( uci_get unbound.@unbound[0].domain )
43 local dhcp_origin=$( uci_get dhcp.@odhcpd[0].leasefile )
46 if [ -f "$UB_TOTAL_CONF" -a -f "$dhcp_origin" \
47 -a "$dhcp_link" = "odhcpd" -a -n "$dhcp_domain" ] ; then
48 # Capture the lease file which could be changing often
49 sort $dhcp_origin > $dhcp_ls_new
52 if [ ! -f $UB_DHCP_CONF -o ! -f $dhcp_ls_old ] ; then
56 dateconf=$(( $( date +%s ) - $( date -r $UB_DHCP_CONF +%s ) ))
59 if [ $dateconf > 150 ] ; then
67 if [ $longconf -gt 0 ] ; then
68 # Go through the messy business of coding up A, AAAA, and PTR records
69 # This static conf will be available if Unbound restarts asynchronously
70 awk -v hostfile=$UB_DHCP_CONF -v domain=$dhcp_domain \
71 -v bslaac=$dhcp4_slaac6 -v bisolt=0 -v bconf=1 \
72 -f /usr/lib/unbound/odhcpd.awk $dhcp_ls_new
76 if [ $longconf -lt 2 ] ; then
77 # Deleting and adding all records into Unbound can be a burden in a
78 # high density environment. Use unbound-control incrementally.
79 sort $dhcp_ls_old $dhcp_ls_new $dhcp_ls_new | uniq -u > $dhcp_ls_del
80 awk -v hostfile=$dns_ls_del -v domain=$dhcp_domain \
81 -v bslaac=$dhcp4_slaac6 -v bisolt=0 -v bconf=0 \
82 -f /usr/lib/unbound/odhcpd.awk $dhcp_ls_del
84 sort $dhcp_ls_new $dhcp_ls_old $dhcp_ls_old | uniq -u > $dhcp_ls_add
85 awk -v hostfile=$dns_ls_add -v domain=$dhcp_domain \
86 -v bslaac=$dhcp4_slaac6 -v bisolt=0 -v bconf=0 \
87 -f /usr/lib/unbound/odhcpd.awk $dhcp_ls_add
90 awk -v hostfile=$dns_ls_add -v domain=$dhcp_domain \
91 -v bslaac=$dhcp4_slaac6 -v bisolt=0 -v bconf=0 \
92 -f /usr/lib/unbound/odhcpd.awk $dhcp_ls_new
96 if [ -f "$dns_ls_del" ] ; then
97 cat $dns_ls_del | $UB_CONTROL_CFG local_datas_remove
101 if [ -f "$dns_ls_add" ] ; then
102 cat $dns_ls_add | $UB_CONTROL_CFG local_datas
107 mv $dhcp_ls_new $dhcp_ls_old
108 rm -f $dns_ls_del $dns_ls_add $dhcp_ls_del $dhcp_ls_add
112 ##############################################################################
116 ##############################################################################