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