News Group Posts

chpass c.code

Subject: Re: expiration of accounts
References: <bpcm0e$kg8$03$1@news.t-online.com>
<3fbc0bc4$0$1096$8eec23a@newsreader.tycho.net>
<bphtao$ej6$03$1@news.t-online.com> 
From: spcecdt@deeptht.armory.com (John DuBois)
Date: 20 Nov 2003 23:38:57 GMT

In article <bphtao$ej6$03$1@news.t-online.com>,
Daniel Voelkel  <daniel.voelkel.NG@gmx.net> wrote:
>The sourcecode of "chpass" is as follows:

After an account is created with useradd, it can't be logged into until the
protected password database indicates that the password has been set.  The
program you're using sets the password, but fails to set the time the password
was set, which indicates to the login process that the password still has never
been set.

In the following code, the only change made is to add this line:

     p->ufld.fd_schange = time(NULL);

I've include the entire program here for the sake of future readers.

        John

#include <sys/types.h>
#include <sys/security.h>
#include <sys/audit.h>
#include <prot.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <time.h>

/**  Global variables  **/
static struct pr_passwd *p;

int main(argc, argv)
int   argc;
char *argv[];
{
     char salt[3], *passwd, *newpasswd;
     set_auth_parameters(argc, argv);
     if ((argc < 3) && (argc > 4))
     {  return (1);
     }

     if ((p = getprpwnam(argv[1])) == NULL)
     {  return (1);
     }

     if (argc == 4)
     {   salt[0] = p->ufld.fd_encrypt[0];
         salt[1] = p->ufld.fd_encrypt[1];
         salt[2] = '\0';

         if (strcmp(bigcrypt(argv[2], salt), p->ufld.fd_encrypt) != 0 )

            return(2);
     }

     sprintf(salt,"%2.2d",(time((time_t *)NULL) % 100));
     strcpy(p->ufld.fd_encrypt, bigcrypt(argv[argc - 1], salt));
     p->ufld.fd_schange = time(NULL);
     return (putprpwnam(argv[1], p) ? 0 : 1);
}
-- 
John DuBois  spcecdt@armory.com  KC6QKZ/AE  http://www.armory.com/~spcecdt/

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