7ab9c7ee52
which lets you compile out most of the "--help" output, saving up to 17k. Renamed mnc to nc. -Erik
96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
/* 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
|
|
*
|
|
*/
|
|
|
|
#include "internal.h"
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <pwd.h>
|
|
#include <grp.h>
|
|
#include <sys/types.h>
|
|
|
|
static const char id_usage[] =
|
|
"id [OPTIONS]... [USERNAME]\n"
|
|
#ifndef BB_FEATURE_TRIVIAL_HELP
|
|
"\nPrint information for USERNAME or the current user\n\n"
|
|
"\t-g\tprints only the group ID\n"
|
|
"\t-u\tprints only the user ID\n"
|
|
"\t-r\tprints the real user ID instead of the effective ID (with -ug)\n\n"
|
|
#endif
|
|
;
|
|
|
|
extern int id_main(int argc, char **argv)
|
|
{
|
|
int no_user = 0, no_group = 0, print_real = 0;
|
|
char *cp, *user, *group;
|
|
gid_t gid;
|
|
|
|
cp = user = group = NULL;
|
|
|
|
argc--; argv++;
|
|
|
|
while (argc > 0) {
|
|
cp = *argv;
|
|
if (*cp == '-') {
|
|
switch (*++cp) {
|
|
case 'u': no_group = 1; break;
|
|
case 'g': no_user = 1; break;
|
|
case 'r': print_real = 1; break;
|
|
default: usage(id_usage);
|
|
}
|
|
} else {
|
|
user = cp;
|
|
}
|
|
argc--; argv++;
|
|
}
|
|
|
|
if (no_user && no_group) usage(id_usage);
|
|
|
|
if (user == NULL) {
|
|
user = xmalloc(9);
|
|
group = xmalloc(9);
|
|
if (print_real) {
|
|
my_getpwuid(user, getuid());
|
|
my_getgrgid(group, getgid());
|
|
} else {
|
|
my_getpwuid(user, geteuid());
|
|
my_getgrgid(group, getegid());
|
|
}
|
|
} else {
|
|
group = xmalloc(9);
|
|
gid = my_getpwnamegid(user);
|
|
my_getgrgid(group, gid);
|
|
}
|
|
|
|
if (no_group) printf("%u\n", my_getpwnam(user));
|
|
else if (no_user) printf("%u\n", my_getgrnam(group));
|
|
else
|
|
printf("uid=%u(%s) gid=%u(%s)\n",
|
|
my_getpwnam(user), user, my_getgrnam(group), group);
|
|
|
|
|
|
exit(0);
|
|
}
|
|
|
|
|
|
/* END CODE */
|