source: trunk/athena/bin/discuss/mclient/create_mtg_dir.c @ 12439

/*
 *
 *      Copyright (C) 1988, 1989 by the Massachusetts Institute of Technology
 *      Developed by the MIT Student Information Processing Board (SIPB).
 *      For copying information, see the file mit-copyright.h in this release.
 *
 */
/*
 * Create a meeting directory; this program should run setuid root.
 * However, it is secure..
 */

#include <stdio.h>
#include <sys/file.h>
#include <sys/param.h>
#include <pwd.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifndef lint
static char rcsid_create_mtg_dir_c[] = "$Id: create_mtg_dir.c,v 1.8 1999-02-02 20:40:32 kcr Exp $";
#endif

main(argc, argv)
        int argc;
        char **argv;
{
        char *dir;
        char *entry;
        struct passwd *pw;

        if (argc != 2) {
                fprintf(stderr, "usage: %s directory\n", argv[0]);
                exit(1);
        }

        if((pw = getpwnam("discuss")) == NULL) {
                fprintf(stderr, "discuss: unknown user\n");
                exit(1);
        }

        dir = argv[1];
        if (dir[0] != '/') {
                fprintf(stderr, "%s: Must be absolute pathname\n", dir);
                exit(1);
        }

        if ((entry = strrchr(dir, '/')) == dir) {
                fprintf(stderr, "%s: Can't create meeting there\n", dir);
                exit(1);
        }
        *entry++ = '\0';

        /*
         *      Access uses real uid, rather than effective uid.
         */
        if (access(dir, W_OK)) {
                perror(dir);
                exit(1);
        }
        if (chdir(dir)) {
                perror(dir);
                exit(1);
        }
        if (!access(entry, 0)) {
                fprintf(stderr, "%s/%s: already exists\n", dir, entry);
                exit(1);
        }
        if (mkdir(entry, 0777)) {
                fprintf(stderr, "Cannot create ");
                perror(entry);
                exit(1);
        }
        if (chown(entry, pw->pw_uid, -1)) {
                fprintf(stderr, "Cannot change ownership for ");
                perror(entry);
                exit(1);
        }
}