[rancid] clogin adding 'exit' command?

[heasley]

Thu, Aug 23, 2018 at 12:32:38PM +0100, Howard Jones:
> Reaping a thread, but I think I finally got this fixed now. The
> bigip.pm overrides TERM with "vt100", always. The prompt is so long
> (70 chars on my test box!) that the command scrolls within its line
> (although without ^H), so the cmds_regexp never matches. Changing the
> TERM line to "screen-w" in bigip.pm resolves it.
> 

what version are you running?  the TERM was changed to vt100-w in rancid
3.3.

> 
> 
> On 8 May 2018 at 16:20, heasley <heas at shrubbery.net> wrote:
> > Tue, May 08, 2018 at 02:39:06PM +0100, Howard Jones:
> >> Definitely something funky going on. The .raw file left behind from
> >> cron is different from the one if I run the same in a subshell.
> >>
> >> The front 9 or so characters of commands are chopped off, which would
> >> explain why I get "missed all commands".
> >> Also, it's trying to send Cisco terminal commands, although those are
> >> just ignored, so probably not the immediate issue.
> >>
> >> I checked with hexdump, and there don't seem to be lots of ^H or
> >> anything like that redrawing the prompt. Although, for those terminal
> >> commands, there's:
> >>
> >>    terminal  ^Hwidth 132^M
> >>
> >> but not in the non-cron version. Nothing else like that further on.
> >>
> >> In the output below, ssh-no-pubkey is a one-liner shellscript to avoid
> >> Cisco Nexus complaining about too many authentication fails, when
> >> pubkeys are loaded:
> >>
> >>    ssh -o PubkeyAuthentication=no $*
> >
> > exec ssh -o PubkeyAuthentication=no $*
> >>
> >> I just checked and from a normal command line, the F5 doesn't scroll
> >> the command horizontally or anything strange.
> >>
> >> Any ideas where I can look next? If it was telnet, I'd capture the
> >> traffic, but it doesn't look like wireshark will do much with the
> >> encrypted part of SSH captures.
> >>
> >> Howard
> >
> > probably the most likely cause is that its assuming the client will
> > have a terminal (TERM) type and it makes further assumptions when it
> > doesnt.  But, it looks like bigip IS setting the term to vt100.  Can
> > you trying setting your interactive TERM to vt100 to see if that
> > reproduces it?
> >
> > Else, it might need other tty intrinsics; so, perhaps try hlogin with
> > it, but it will need that 'quit' patch.
> >
> > is f5 supporting NETCONF?
> >
> >> executing clogin -t 90 -c"modify cli preference pager disabled
> >> display-threshold 0;show sys version;show sys hardware;show sys
> >> license;show /net route static;list all-properties recursive" lb01
> >>
> >> lb01
> >> spawn /opt/rancid/local/ssh-no-pubkey -c aes192-ctr -x -l rancidconfbackup lb01
> >> Password:
> >> Last login: Tue May  8 12:40:30 2018 from 192.168.0.27^M
> >> rancidconfbackup@(lb01)(cfg-sync In Sync)(Active)(/Common)(tmos)#
> >> rancidconfbackup@(lb01)(cfg-sync In Sync)(Active)(/Common)(tmos)#
> >> terminal length 0
> >> Syntax Error: unexpected argument "terminal"
> >> rancidconfbackup@(lb01)(cfg-sync In Sync)(Active)(/Common)(tmos)#
> >> terminal width 132
> >> Syntax Error: unexpected argument "terminal"
> >> rancidconfbackup@(lb01)(cfg-sync In Sync)(Active)(/Common)(tmos)# i
> >> preference pager disabled display-threshold 0
> >> rancidconfbackup@(lb01)(cfg-sync In Sync)(Active)(/Common)(tmos)#version