[tor-relays] control_auth_cookie problem

[Damian Johnson]

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