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48 lines
1.7 KiB
48 lines
1.7 KiB
#
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#.Distributed under the terms of the GNU General Public License (GPL) version 2.0
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#
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# The script directly updates a PowerDNS (or maybe bind server) via nsupdate from bind-client package.
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#.based on github request #957 by Jan Riechers <de at r-jan dot de>
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#.2015 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
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#
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# This script is parsed by dynamic_dns_functions.sh inside send_update() function
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#
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# using following options from /etc/config/ddns
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# option username - keyname
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# option password - shared secret (base64 encoded)
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# option domain - full qualified domain to update
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# option dns_server - DNS server to update
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#
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# variable __IP already defined with the ip-address to use for update
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#
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local __TTL=600 #.preset DNS TTL (in seconds)
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local __RRTYPE __PW __TCP
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local __PROG=$(command -v nsupdate) # BIND nsupdate ?
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[ -z "$__PROG" ] && __PROG=$(command -v knsupdate) # Knot nsupdate ?
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[ -z "$__PROG" ] && write_log 14 "'nsupdate' or 'knsupdate' not installed !"
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[ -z "$username" ] && write_log 14 "Service section not configured correctly! Missing 'username'"
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[ -z "$password" ] && write_log 14 "Service section not configured correctly! Missing 'password'"
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[ -z "$dns_server" ] && write_log 14 "Service section not configured correctly! Missing 'dns_server'"
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[ $use_ipv6 -ne 0 ] && __RRTYPE="AAAA" || __RRTYPE="A"
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[ $force_dnstcp -ne 0 ] && __TCP="-v" || __TCP=""
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# create command file
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cat >$DATFILE <<-EOF
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server $dns_server
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key $username $password
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update del $domain $__RRTYPE
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update add $domain $__TTL $__RRTYPE $__IP
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show
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send
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answer
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quit
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EOF
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$__PROG -d $__TCP $DATFILE >$ERRFILE 2>&1
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# nsupdate always return success
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write_log 7 "(k)nsupdate reports:${N}$(cat $ERRFILE)"
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return 0
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