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/* vi: set sw=4 ts=4: */
/*
* Mini id implementation for busybox
*
* Copyright (C) 2000 by Randolph Chung <tausq@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/* BB_AUDIT SUSv3 _NOT_ compliant -- option -G is not currently supported. */
#include "busybox.h"
#include <stdio.h>
#include <unistd.h>
#include <getopt.h>
#include <string.h>
#include <sys/types.h>
#define NO_GROUP 1
#define NO_USER 2
#define PRINT_REAL 4
#define NAME_NOT_NUMBER 8
extern int id_main(int argc, char **argv)
{
char user[9], group[9];
long pwnam, grnam;
int uid, gid;
int flags;
flags = bb_getopt_ulflags(argc, argv, "ugrn");
if (((flags & (NO_USER | NO_GROUP)) == (NO_USER | NO_GROUP))
|| (argc > optind + 1)
) {
bb_show_usage();
}
if (argv[optind] == NULL) {
if (flags & PRINT_REAL) {
uid = getuid();
gid = getgid();
} else {
uid = geteuid();
gid = getegid();
}
my_getpwuid(user, uid);
} else {
safe_strncpy(user, argv[optind], sizeof(user));
gid = my_getpwnamegid(user);
}
my_getgrgid(group, gid);
pwnam=my_getpwnam(user);
grnam=my_getgrnam(group);
if (flags & (NO_GROUP | NO_USER)) {
char *s = group;
if (flags & NO_GROUP) {
s = user;
grnam = pwnam;
}
if (flags & NAME_NOT_NUMBER) {
puts(s);
} else {
printf("%ld\n", grnam);
}
} else {
printf("uid=%ld(%s) gid=%ld(%s)\n", pwnam, user, grnam, group);
}
bb_fflush_stdout_and_exit(0);
}
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