[2009] in athena10
Re: [Debathena] #167: debathena-lert-server binds only to localhost
daemon@ATHENA.MIT.EDU (Debathena Trac)
Fri Apr 3 00:49:56 2009
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From: "Debathena Trac" <debathena@MIT.EDU>
Cc: debathena@mit.edu
To: broder@mit.edu
Date: Fri, 03 Apr 2009 04:49:35 -0000
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#167: debathena-lert-server binds only to localhost---------------------+------------------------------------------------------
Reporter: broder | Owner:
Type: defect | Status: new
Priority: low | Component: --
Resolution: | Keywords: proposed
---------------------+------------------------------------------------------Changes (by broder):
* keywords: => proposed
Old description:
> The debathena-lert-server package exists, and provides the necessary
> binaries, but has a relatively useless configuration.
>
> We should update lert.h to use more sane locations than /var/ops, and
> also provide an initscript.
New description:
debathena-lert-server uses `gethostbyname(uname().nodename)` as the
address to bind to. Unfortunately, on most Ubuntu systems, this works out
to being 127.0.1.1 instead of the actual IP address, thanks to Ubuntu's
`/etc/hosts` hacks.
More fun, the krb4 code needs the destination address of incoming packets
for the encryption of the reply, so we can't simply switch to listening on
`INADDR_ANY` with no other changes.
I see two options:
1. Change the code to use `recvmsg` instead of `recvfrom`, in which case
you can get at the destination address of the incoming packets at the
expense of substantially increased complexity. See
http://tinyurl.com/d79x9r for an example of how to do this.
2. Tear out the krb4 code. The krb5 protocol was introduced in 2002, and
it seems pretty unlikely that krb4 clients are still around. It's already
nicely conditionalized out so that it'll build on squeeze.
--
Comment:
debathena-lert 10.0.2-0debathena1 fixes the paths that debathena-lert-
server uses, and includes an init script. It's going into -proposed with
everything else.
There is one remaining issue, and I've updated the description to document
that.
-- Ticket URL: <http://debathena.mit.edu/trac/ticket/167#comment:2>Debathena <http://debathena.mit.edu/>MIT Debian-Athena Project
