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Annotation of 43BSDTahoe/etc/mkpasswd.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980, 1983 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, 1983 Regents of the University of California.\n\
        !            21:  All rights reserved.\n";
        !            22: #endif /* not lint */
        !            23: 
        !            24: #ifndef lint
        !            25: static char sccsid[] = "@(#)mkpasswd.c 5.3 (Berkeley) 6/18/88";
        !            26: #endif /* not lint */
        !            27: 
        !            28: #include <sys/file.h>
        !            29: #include <stdio.h>
        !            30: #include <pwd.h>
        !            31: #include <ndbm.h>
        !            32: 
        !            33: main(argc, argv)
        !            34:        int argc;
        !            35:        char *argv[];
        !            36: {
        !            37:        DBM *dp;
        !            38:        datum key, content;
        !            39:        register char *cp, *tp;
        !            40:        register struct passwd *pwd;
        !            41:        int verbose = 0, entries = 0, maxlen = 0;
        !            42:        char buf[BUFSIZ];
        !            43: 
        !            44:        if (argc > 1 && strcmp(argv[1], "-v") == 0) {
        !            45:                verbose++;
        !            46:                argv++, argc--;
        !            47:        }
        !            48:        if (argc != 2) {
        !            49:                fprintf(stderr, "usage: mkpasswd [ -v ] file\n");
        !            50:                exit(1);
        !            51:        }
        !            52:        if (access(argv[1], R_OK) < 0) {
        !            53:                fprintf(stderr, "mkpasswd: ");
        !            54:                perror(argv[1]);
        !            55:                exit(1);
        !            56:        }
        !            57:        (void)umask(0);
        !            58:        dp = dbm_open(argv[1], O_WRONLY|O_CREAT|O_EXCL, 0644);
        !            59:        if (dp == NULL) {
        !            60:                fprintf(stderr, "mkpasswd: ");
        !            61:                perror(argv[1]);
        !            62:                exit(1);
        !            63:        }
        !            64:        setpwfile(argv[1]);
        !            65:        while (pwd = getpwent()) {
        !            66:                cp = buf;
        !            67: #define        COMPACT(e)      tp = pwd->e; while (*cp++ = *tp++);
        !            68:                COMPACT(pw_name);
        !            69:                COMPACT(pw_passwd);
        !            70:                bcopy((char *)&pwd->pw_uid, cp, sizeof (int));
        !            71:                cp += sizeof (int);
        !            72:                bcopy((char *)&pwd->pw_gid, cp, sizeof (int));
        !            73:                cp += sizeof (int);
        !            74:                bcopy((char *)&pwd->pw_quota, cp, sizeof (int));
        !            75:                cp += sizeof (int);
        !            76:                COMPACT(pw_comment);
        !            77:                COMPACT(pw_gecos);
        !            78:                COMPACT(pw_dir);
        !            79:                COMPACT(pw_shell);
        !            80:                content.dptr = buf;
        !            81:                content.dsize = cp - buf;
        !            82:                if (verbose)
        !            83:                        printf("store %s, uid %d\n", pwd->pw_name, pwd->pw_uid);
        !            84:                key.dptr = pwd->pw_name;
        !            85:                key.dsize = strlen(pwd->pw_name);
        !            86:                if (dbm_store(dp, key, content, DBM_INSERT) < 0) {
        !            87:                        fprintf(stderr, "mkpasswd: ");
        !            88:                        perror("dbm_store failed");
        !            89:                        exit(1);
        !            90:                }
        !            91:                key.dptr = (char *)&pwd->pw_uid;
        !            92:                key.dsize = sizeof (int);
        !            93:                if (dbm_store(dp, key, content, DBM_INSERT) < 0) {
        !            94:                        fprintf(stderr, "mkpasswd: ");
        !            95:                        perror("dbm_store failed");
        !            96:                        exit(1);
        !            97:                }
        !            98:                entries++;
        !            99:                if (cp - buf > maxlen)
        !           100:                        maxlen = cp - buf;
        !           101:        }
        !           102:        dbm_close(dp);
        !           103:        printf("%d password entries, maximum length %d\n", entries, maxlen);
        !           104:        exit(0);
        !           105: }

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