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https://git.busybox.net/busybox.git
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90 lines
2.0 KiB
C
90 lines
2.0 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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#include "busybox.h"
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#include <stdio.h>
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#include <unistd.h>
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#include <pwd.h>
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#include <grp.h>
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#include <getopt.h>
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#include <sys/types.h>
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extern int id_main(int argc, char **argv)
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{
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int no_user = 0, no_group = 0, print_real = 0;
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char user[9], group[9];
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long gid;
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long pwnam, grnam;
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int opt;
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gid = 0;
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while ((opt = getopt(argc, argv, "ugr")) > 0) {
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switch (opt) {
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case 'u':
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no_group++;
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break;
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case 'g':
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no_user++;
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break;
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case 'r':
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print_real++;
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break;
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default:
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usage(id_usage);
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}
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}
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if (no_user && no_group) usage(id_usage);
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if (argv[optind] == NULL) {
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if (print_real) {
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my_getpwuid(user, getuid());
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my_getgrgid(group, getgid());
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} else {
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my_getpwuid(user, geteuid());
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my_getgrgid(group, getegid());
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}
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} else {
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strncpy(user, argv[optind], 8);
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user[8] = '\0';
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gid = my_getpwnamegid(user);
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my_getgrgid(group, gid);
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}
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pwnam=my_getpwnam(user);
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grnam=my_getgrnam(group);
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if (gid == -1 || pwnam==-1 || grnam==-1) {
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error_msg_and_die("%s: No such user\n", user);
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}
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if (no_group)
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printf("%ld\n", pwnam);
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else if (no_user)
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printf("%ld\n", grnam);
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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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return(0);
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}
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/* END CODE */
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