bind8: master/slave asymetry, SRV records, allow-update

[Kenneth P. <sh...@we...>]

I just noticed that webmin doesn't handle SRV records, so I started to
look at what would be needed to add support for them. I grepped all the
files in the module for "HINFO" to see where changes would need to be
made, and noticed a slight asymetry in the edit_{master,slave}.cgi
files. Observe the region where @rcodes is getting populated, and the
variations in the two scripts. This section just begs for factoring out
the common logic into a library routine to avoid the common logic
getting out of sync between the two files.

I'm trying to figure out where to hook in dynamic updates, but for now
I'd recommend NOT writing a zone file for an existing zone that has
allow-update in its options. I figure if this option is present for the
zone, the record-editing scripts should invoke nsupdate instead of
writing a new zone file. Updating the reverse zone complicates this, as
either or both zones could be dynamic. For instance, my DHCP server
updates both a forward and reverse zone in my DNS. In this case I'd
need to populate the webmin zone display from a zone transfer, not from
a file, because the file is likely to be out-of-date with respect to
the DNS server's internal state. So I'll have to hook in some code to
use named-xfer if allow-update is present.

Ken
mailto:sh...@we...
http://www.sewingwitch.com/ken/
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