From: ts <decoux@...>
Date: 2001-11-30T00:28:41+09:00
Subject: [ruby-talk:26911] Re: Fixed ... partly ... maybe a bug?

>>>>> "H" == Harry Ohlsen <harryo@zipworld.com.au> writes:

H> OK. I discovered that I needed to do a "require 'etc.so'" and then it
H> worked fine.

 ruby must give an error message in this case

pigeon% ruby -e 'Etc.getpwnam("ts")'
-e:1: uninitialized constant Etc (NameError)
pigeon% 


H> However, I found a couple of problems.  One is that I accidentally sent
H> it something like "harryo/xyz" and it again hung, even with the necessary
H> require of "etc.so".  I'm always reluctant to say this, but that feels like a
H> bug.

 Try this program and see if it hung

pigeon% cat a.c
#include <stdio.h>
#include <pwd.h>
#include <sys/types.h>

main()
{
    struct passwd *pwd = getpwnam("harryo/xyz");
    if (pwd != NULL)
        printf("%s\n", pwd->pw_name);
}
pigeon% 

 then try it with a valid uid

H> The passwd field in the object it returns contains "x", which is what's
H> in /etc/passwd to indicate that the password can be found in /etc/shadow.

H> Maybe the code needs to be changed to understand shadow password files.

 why ? you want to try to crack the passwords ? :-)))))


Guy Decoux