NetBSD/usr.bin/groups/groups.c

106 lines
3.0 KiB
C

/*
* Copyright (c) 1980 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980 Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)groups.c 5.4 (Berkeley) 6/1/90";
#endif /* not lint */
/*
* groups
*/
#include <sys/param.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
int groups[NGROUPS];
main(argc, argv)
int argc;
char *argv[];
{
int ngroups, i;
char *sep = "";
struct group *gr;
if (argc > 1)
showgroups(argv[1]);
ngroups = getgroups(NGROUPS, groups);
for (i = 0; i < ngroups; i++) {
gr = getgrgid(groups[i]);
if (gr == NULL)
printf("%s%d", sep, groups[i]);
else
printf("%s%s", sep, gr->gr_name);
sep = " ";
}
printf("\n");
exit(0);
}
showgroups(user)
register char *user;
{
register struct group *gr;
register struct passwd *pw;
register char **cp;
char *sep = "";
if ((pw = getpwnam(user)) == NULL) {
fprintf(stderr, "groups: no such user.\n");
exit(1);
}
while (gr = getgrent()) {
if (pw->pw_gid == gr->gr_gid) {
printf("%s%s", sep, gr->gr_name);
sep = " ";
continue;
}
for (cp = gr->gr_mem; cp && *cp; cp++)
if (strcmp(*cp, user) == 0) {
printf("%s%s", sep, gr->gr_name);
sep = " ";
break;
}
}
printf("\n");
exit(0);
}