/* * Copyright (c) 1980, 1983 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that the above copyright notice and this paragraph are * duplicated in all such forms and that any documentation, * advertising materials, and other materials related to such * distribution and use acknowledge that the software was developed * by the University of California, Berkeley. The name of the * University may not be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #ifndef lint char copyright[] = "@(#) Copyright (c) 1980, 1983 Regents of the University of California.\n\ All rights reserved.\n"; #endif /* not lint */ #ifndef lint static char sccsid[] = "@(#)mkpasswd.c 5.3 (Berkeley) 6/18/88"; #endif /* not lint */ #include <sys/file.h> #include <stdio.h> #include <pwd.h> #include <ndbm.h> main(argc, argv) int argc; char *argv[]; { DBM *dp; datum key, content; register char *cp, *tp; register struct passwd *pwd; int verbose = 0, entries = 0, maxlen = 0; char buf[BUFSIZ]; 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); } (void)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->e; while (*cp++ = *tp++); COMPACT(pw_name); COMPACT(pw_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(pw_comment); COMPACT(pw_gecos); COMPACT(pw_dir); COMPACT(pw_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); }