> > What is the back-end for your UNIX system account lookups: is this > > LDAP, files, or something else? This weekend there was a thread > > about getpwnam_r() not returning errors when an LDAP server was > > down. Now we have getpwnam_r() returing errors for non-error lookups. > > If this is the same LDAP driver then it badly needs fixing. > > Below is a small C program. Save as getpwnam_r_test.c, build with > "make getpwnam_r_test", and run as "./getpwnam_r_test username". > > This is the correct result: > > $ ./getpwnam_r_test wietse > wietse: no error: uid=304252 (Wietse Venema) > $ ./getpwnam_r_test +bar > +bar: no error: not found > $ ./getpwnam_r_test doesnotexist > doesnotexist: no error: not found > $ ./getpwnam_r_test '' > : no error: not found > > As you see, there is no error for non-existent users, even if the > name is spelled in a funny manner.
Bingo! :-) On old MTA (Debian sqeeze) your demo program works well meanwhile on the new one (Debian jessie) it fails: $ ./getpwnam_r_test +Trash +Trash: error: No such file or directory $ Unfortunately the situation is bit complicated. /etc/nsswitch.conf: passwd: files ldap And nsdc also plays in the background. There are several potentially buggy code everywhere. Many thanks for your help. :-) I consult my colleagues what to do. Cheers Gabor
