BSD 4_3 release

[unix-history] / usr / src / etc / mkpasswd.c

/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved.  The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/

#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[] = "@(#)mkpasswd.c  5.1 (Berkeley) 5/28/85";
#endif not lint

#include <sys/file.h>
#include <stdio.h>
#include <pwd.h>
#include <ndbm.h>

char    buf[BUFSIZ];

struct  passwd *fgetpwent();

main(argc, argv)
       char *argv[];
{
       DBM *dp;
       datum key, content;
       register char *cp, *tp;
       register struct passwd *pwd;
       int verbose = 0, entries = 0, maxlen = 0;

       if (argc > 1 && strcmp(argv[1], "-v") == 0) {
               verbose++;
               argv++, argc--;
       }
       if (argc != 2) {
               fprintf(stderr, "usage: mkpasswd [ -v ] file\n");
               exit(1);
       }
       if (access(argv[1], R_OK) < 0) {
               fprintf(stderr, "mkpasswd: ");
               perror(argv[1]);
               exit(1);
       }
       umask(0);
       dp = dbm_open(argv[1], O_WRONLY|O_CREAT|O_EXCL, 0644);
       if (dp == NULL) {
               fprintf(stderr, "mkpasswd: ");
               perror(argv[1]);
               exit(1);
       }
       setpwfile(argv[1]);
       while (pwd = getpwent()) {
               cp = buf;
#define COMPACT(e)      tp = pwd->pw_/**/e; while (*cp++ = *tp++);
               COMPACT(name);
               COMPACT(passwd);
               bcopy((char *)&pwd->pw_uid, cp, sizeof (int));
               cp += sizeof (int);
               bcopy((char *)&pwd->pw_gid, cp, sizeof (int));
               cp += sizeof (int);
               bcopy((char *)&pwd->pw_quota, cp, sizeof (int));
               cp += sizeof (int);
               COMPACT(comment);
               COMPACT(gecos);
               COMPACT(dir);
               COMPACT(shell);
               content.dptr = buf;
               content.dsize = cp - buf;
               if (verbose)
                       printf("store %s, uid %d\n", pwd->pw_name, pwd->pw_uid);
               key.dptr = pwd->pw_name;
               key.dsize = strlen(pwd->pw_name);
               if (dbm_store(dp, key, content, DBM_INSERT) < 0) {
                       fprintf(stderr, "mkpasswd: ");
                       perror("dbm_store failed");
                       exit(1);
               }
               key.dptr = (char *)&pwd->pw_uid;
               key.dsize = sizeof (int);
               if (dbm_store(dp, key, content, DBM_INSERT) < 0) {
                       fprintf(stderr, "mkpasswd: ");
                       perror("dbm_store failed");
                       exit(1);
               }
               entries++;
               if (cp - buf > maxlen)
                       maxlen = cp - buf;
       }
       dbm_close(dp);
       printf("%d password entries, maximum length %d\n", entries, maxlen);
       exit(0);
}