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ddns-scripts: implements usage of nsupdate to direct update DNS servers

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* new service "bind-nsupdate" using nsupdate to directly updates a PowerDNS or Bind server via nsupdate.
  suggested by Jan Riechers (Pull #957) many thanks!
* updated tld-names.dat

Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>
This commit is contained in:
Christian Schoenebeck
2015-02-28 16:43:02 +01:00
parent 137744a742
commit fad616a4cc
3 changed files with 171 additions and 40 deletions
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46
net/ddns-scripts/files/update_nsupdate.sh Normal file
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#
#.Distributed under the terms of the GNU General Public License (GPL) version 2.0
#
# The script directly updates a PowerDNS (or maybe bind server) via nsupdate from bind-client package.
#.based on github request #957 by Jan Riechers <de at r-jan dot de>
#.2015 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
#
# This script is parsed by dynamic_dns_functions.sh inside send_update() function
#
# using following options from /etc/config/ddns
# option username - keyname
# option password - shared secret (base64 encoded)
# option domain - full qualified domain to update
# option dns_server - DNS server to update
#
# variable __IP already defined with the ip-address to use for update
#
local __TTL=600 #.preset DNS TTL (in seconds)
local __RRTYPE __PW __TCP
[ -x /usr/bin/nsupdate ] || write_log 14 "'nsupdate' not installed or not executable !"
[ -z "$username" ] && write_log 14 "Service section not configured correctly! Missing 'username'"
[ -z "$password" ] && write_log 14 "Service section not configured correctly! Missing 'password'"
[ -z "$dns_server" ] && write_log 14 "Service section not configured correctly! Missing 'dns_server'"
[ $use_ipv6 -ne 0 ] && __RRTYPE="AAAA" || __RRTYPE="A"
[ $force_dnstcp -ne 0 ] && __TCP="-v" || __TCP=""
# create command file
cat >$DATFILE <<-EOF
server $dns_server
key $username $password
update del $domain $__RRTYPE
update add $domain $__TTL $__RRTYPE $__IP
show
send
quit
EOF
/usr/bin/nsupdate -d $__TCP $DATFILE >$ERRFILE 2>&1
# nsupdate always return success
write_log 7 "nsupdate reports:\n$(cat $ERRFILE)"
return 0