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/*
* pg_id.c
*
* A crippled id utility for use in various shell scripts in use by PostgreSQL
* (in particular initdb)
*
* Copyright (C) 2000 by PostgreSQL Global Development Group
*
* $Header: /cvsroot/pgsql/src/bin/pg_id/Attic/pg_id.c,v 1.13 2000/02/16 13:15:25 momjian Exp $
*/
#include <postgres.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
int main(int argc, char * argv[])
{
int c;
int nameflag = 0,
realflag = 0,
userflag = 0;
const char * username = NULL;
struct passwd * pw;
while ((c = getopt(argc, argv, "nru")) != -1)
{
switch(c)
{
case 'n':
nameflag = 1;
break;
case 'r':
realflag = 1;
break;
case 'u':
userflag = 1;
break;
default:
fprintf(stderr, "Usage: %s [-n] [-r] [-u] [username]\n", argv[0]);
exit(1);
}
}
if (argc - optind >= 1)
username = argv[optind];
if (nameflag && !userflag)
{
fprintf(stderr, "%s: -n must be used together with -u\n", argv[0]);
exit(1);
}
if (username && realflag)
{
fprintf(stderr, "%s: -r cannot be used when a user name is given\n", argv[0]);
exit(1);
}
if (username)
{
pw = getpwnam(username);
if (!pw)
{
fprintf(stderr, "%s: %s: no such user\n", argv[0], username);
exit(1);
}
}
else if (realflag)
pw = getpwuid(getuid());
else
pw = getpwuid(geteuid());
if (!pw)
{
perror(argv[0]);
exit(1);
}
if (!userflag)
printf("uid=%d(%s)\n", (int)pw->pw_uid, pw->pw_name);
else if (nameflag)
puts(pw->pw_name);
else
printf("%d\n", (int)pw->pw_uid);
return 0;
}
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