Hi Mick. Here's the python code to do cookie auth: https://gitweb.torproject.org/pytorctl.git/blob/HEAD:/TorCtl.py#l936

It's using the hex representation of the file contents. -Damian

On Mon, Jul 18, 2011 at 12:42 PM, mick mbm@rlogin.net wrote:

Hi Guys

I use munin to monitor a bunch of stuff (including tor) on my servers. The long run munin stats are quite useful.

I checked my stats today and noticed that there were no entries for tor on one machine going back a couple of weeks. Now I know I rebooted the machine in question about 12 days ago and I /think/ I upgraded tor at that time. Certainly the restart will have caused a regeneration of the cookie file anyway.

Checking my logs, I see the following from munin:

"Unable to connect to Tor ControlPort (515 Authentication failed: Wrong length on authentication cookie"

and similarly in the tor log: " Got authentication cookie with wrong length (16)"

Now I can see that the cookie file is 32 characters long, so I'm guessing that the file contains a control character that is screwing up the munin php plugin line "$cookie = file_get_contents($cookiepath);"

Anyone else seen this before? Any ideas for fixing it? - short of restarting tor again (I've done that and I'm reluctant to keep on stopping and starting what should be a stable server),

Thanks

Mick

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The text file for RFC 854 contains exactly 854 lines. Do you think there is any cosmic significance in this?

Douglas E Comer - Internetworking with TCP/IP Volume 1

http://www.ietf.org/rfc/rfc854.txt

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