[Buildbot-devel] Cannot get sendchange to work

[Brian Warner]

> I get these two lines:
> 
> 2007/10/31 15:51 EDT [Broker,8,127.0.0.1] Peer will receive following PB 
> traceback:
> 2007/10/31 15:51 EDT [Broker,8,127.0.0.1] Failure: 
> twisted.cred.error.UnauthorizedLogin:
> 
> Sendchange doesn't take a password.

That's right, sendchange uses the same access path as buildslaves do, with a
fixed username/password of "change"/"changepw". (one day, maybe when we move
to Foolscap, all of this will be properly secure, but at the moment attackers
can submit bogus changes and trick you into doing spurious rebuilds of pre-existing
code).

However, the error message is suggesting exactly a login problem. If there
weren't a PBChangeSource registered, that might be how it would look. It would also
look like that if the sendchange process were connecting to the wrong port,
like, say, the PBListener status port.

I think we have exactly two PB ports being used:

 c['slaveport'] : used for all buildslaves, the PBChangeSource, c['debugpw']

 PBListener(port=) : used for status port


Could you double-check that you're passing a --master argument to 'buildbot
sendchange' that references the slaveport instead of a PBListener port?

If so, there might be a bug in the way the PBChangeSource is being set up,
but I think it's been working ok for me. What are the versions of your
buildmaster and your 'buildbot sendchange' code?

> Is there some kind of whitelisting I need to do?

Nope.

puzzled,
 -Brian