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Annotation of 43BSDTahoe/ucb/groups.c, revision 1.1.1.1

1.1       root        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) 6/29/88";
                     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: }

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