| 1 | /* |
| 2 | * Copyright (c) 1980 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms are permitted |
| 6 | * provided that the above copyright notice and this paragraph are |
| 7 | * duplicated in all such forms and that any documentation, |
| 8 | * advertising materials, and other materials related to such |
| 9 | * distribution and use acknowledge that the software was developed |
| 10 | * by the University of California, Berkeley. The name of the |
| 11 | * University may not be used to endorse or promote products derived |
| 12 | * from this software without specific prior written permission. |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 16 | */ |
| 17 | |
| 18 | #ifndef lint |
| 19 | char copyright[] = |
| 20 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ |
| 21 | All rights reserved.\n"; |
| 22 | #endif /* not lint */ |
| 23 | |
| 24 | #ifndef lint |
| 25 | static char sccsid[] = "@(#)groups.c 5.3 (Berkeley) %G%"; |
| 26 | #endif /* not lint */ |
| 27 | |
| 28 | /* |
| 29 | * groups |
| 30 | */ |
| 31 | |
| 32 | #include <sys/param.h> |
| 33 | #include <grp.h> |
| 34 | #include <pwd.h> |
| 35 | #include <stdio.h> |
| 36 | |
| 37 | int groups[NGROUPS]; |
| 38 | |
| 39 | main(argc, argv) |
| 40 | int argc; |
| 41 | char *argv[]; |
| 42 | { |
| 43 | int ngroups, i; |
| 44 | char *sep = ""; |
| 45 | struct group *gr; |
| 46 | |
| 47 | if (argc > 1) |
| 48 | showgroups(argv[1]); |
| 49 | ngroups = getgroups(NGROUPS, groups); |
| 50 | for (i = 0; i < ngroups; i++) { |
| 51 | gr = getgrgid(groups[i]); |
| 52 | if (gr == NULL) |
| 53 | printf("%s%d", sep, groups[i]); |
| 54 | else |
| 55 | printf("%s%s", sep, gr->gr_name); |
| 56 | sep = " "; |
| 57 | } |
| 58 | printf("\n"); |
| 59 | exit(0); |
| 60 | } |
| 61 | |
| 62 | showgroups(user) |
| 63 | register char *user; |
| 64 | { |
| 65 | register struct group *gr; |
| 66 | register struct passwd *pw; |
| 67 | register char **cp; |
| 68 | char *sep = ""; |
| 69 | |
| 70 | if ((pw = getpwnam(user)) == NULL) { |
| 71 | fprintf(stderr, "groups: no such user.\n"); |
| 72 | exit(1); |
| 73 | } |
| 74 | while (gr = getgrent()) { |
| 75 | if (pw->pw_gid == gr->gr_gid) { |
| 76 | printf("%s%s", sep, gr->gr_name); |
| 77 | sep = " "; |
| 78 | continue; |
| 79 | } |
| 80 | for (cp = gr->gr_mem; cp && *cp; cp++) |
| 81 | if (strcmp(*cp, user) == 0) { |
| 82 | printf("%s%s", sep, gr->gr_name); |
| 83 | sep = " "; |
| 84 | break; |
| 85 | } |
| 86 | } |
| 87 | printf("\n"); |
| 88 | exit(0); |
| 89 | } |