Nonexistent user, continued

[Matt Johnston]

On Tue, Oct 25, 2005 at 07:07:25AM -0700, Yan Seiner wrote:
> OK, I've checked everything I can think of; no joy.  I have /dev/pts...
> 
> I recompiled dropbear with debug, and it's failing in checkusername.
> 
> Looking at the source, ses.authstate.pw == NULL so the check fails.
> 
> Where is ses.authstate.pw loaded?  scanning the source code didn't make 
> anything jump out at me....

ses.authstate.pw gets loaded a few lines before
at svr-auth.c:213, from the call to getpwnam().

> I tried running strace, but when dropbear forks to handle the 
> connection, the trace stops.  How do I get strace to trace the child?  
> strace -f -F dropbear -F -E -v didn't help.

That's strange - tracing here I see the child process fine.

To simplify things, try compiling and running (and
straceing) the attached program with
gcc -o getpwnamroot getpwnamroot.c

Running it here (Debian testing iirc), I see it looking at
/etc/nsswitch.conf - is that all that stuff set up right?

Send me the strace output if you want and I'll have a look.

Matt