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/* $OpenBSD: kdb_init.c,v 1.4 1998/02/18 11:53:50 art Exp $ */
/* $KTH: kdb_init.c,v 1.23 1997/03/30 17:45:05 assar Exp $ */
/*-
* Copyright 1987, 1988 by the Student Information Processing Board
* of the Massachusetts Institute of Technology
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for any purpose and without fee is
* hereby granted, provided that the above copyright notice
* appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation,
* and that the names of M.I.T. and the M.I.T. S.I.P.B. not be
* used in advertising or publicity pertaining to distribution
* of the software without specific, written prior permission.
* M.I.T. and the M.I.T. S.I.P.B. make no representations about
* the suitability of this software for any purpose. It is
* provided "as is" without express or implied warranty.
*/
/*
* program to initialize the database, reports error if database file
* already exists.
*/
#include "adm_locl.h"
enum ap_op {
NULL_KEY, /* setup null keys */
MASTER_KEY, /* use master key as new key */
RANDOM_KEY /* choose a random key */
};
static des_cblock master_key;
static des_key_schedule master_key_schedule;
static char progname[]="kdb_init";
/* use a return code to indicate success or failure. check the return */
/* values of the routines called by this routine. */
static int
add_principal(char *name, char *instance, enum ap_op aap_op, int maxlife)
{
Principal principal;
struct tm *tm;
des_cblock new_key;
memset(&principal, 0, sizeof(principal));
strncpy(principal.name, name, ANAME_SZ - 1);
principal.name[ANAME_SZ - 1] = '\0';
strncpy(principal.instance, instance, INST_SZ - 1);
principal.instance[INST_SZ - 1] = '\0';
switch (aap_op) {
case NULL_KEY:
principal.key_low = 0;
principal.key_high = 0;
break;
case RANDOM_KEY:
#ifdef NOENCRYPTION
memset(new_key, 0, sizeof(des_cblock));
new_key[0] = 127;
#else
des_new_random_key(&new_key);
#endif
kdb_encrypt_key (&new_key, &new_key, &master_key, master_key_schedule,
DES_ENCRYPT);
copy_from_key(new_key, &principal.key_low, &principal.key_high);
memset(new_key, 0, sizeof(new_key));
break;
case MASTER_KEY:
memcpy(new_key, master_key, sizeof (des_cblock));
kdb_encrypt_key (&new_key, &new_key, &master_key, master_key_schedule,
DES_ENCRYPT);
copy_from_key(new_key, &principal.key_low, &principal.key_high);
break;
}
principal.exp_date = 946702799; /* Happy new century */
strncpy(principal.exp_date_txt, "12/31/99", DATE_SZ);
principal.mod_date = time(0);
tm = k_localtime(&principal.mod_date);
principal.attributes = 0;
principal.max_life = maxlife;
principal.kdc_key_ver = 1;
principal.key_version = 1;
strncpy(principal.mod_name, "db_creation", ANAME_SZ - 1);
principal.mod_name[ANAME_SZ - 1] = '\0';
strncpy(principal.mod_instance, "", INST_SZ - 1);
principal.mod_instance[INST_SZ - 1] = '\0';
principal.old = 0;
if (kerb_db_put_principal(&principal, 1) != 1)
return -1; /* FAIL */
/* let's play it safe */
memset(new_key, 0, sizeof (des_cblock));
memset(&principal.key_low, 0, 4);
memset(&principal.key_high, 0, 4);
return 0;
}
int
main(int argc, char **argv)
{
char realm[REALM_SZ];
char *cp;
int code;
char *database;
if (argc > 3) {
fprintf(stderr, "Usage: %s [realm-name] [database-name]\n", progname);
return 1;
}
if (argc == 3) {
database = argv[2];
--argc;
} else
database = DBM_FILE;
/* Do this first, it'll fail if the database exists */
if ((code = kerb_db_create(database)) != 0)
err (1, "Couldn't create database %s", database);
kerb_db_set_name(database);
if (argc == 2)
strncpy(realm, argv[1], REALM_SZ);
else {
if (krb_get_lrealm(realm, 1) != KSUCCESS) {
strncpy(realm, KRB_REALM, REALM_SZ - 1);
realm[REALM_SZ - 1] = '\0';
}
fprintf(stderr, "Realm name [default %s ]: ", realm);
if (fgets(realm, sizeof(realm), stdin) == NULL)
errx (1, "\nEOF reading realm");
if ((cp = strchr(realm, '\n')))
*cp = '\0';
if (!*realm) /* no realm given */
if (krb_get_lrealm(realm, 1) != KSUCCESS) {
strncpy(realm, KRB_REALM, REALM_SZ - 1);
realm[REALM_SZ - 1] = '\0';
}
}
if (!k_isrealm(realm))
errx (1, "Bad kerberos realm name \"%s\"", realm);
#ifndef RANDOM_MKEY
printf("You will be prompted for the database Master Password.\n");
printf("It is important that you NOT FORGET this password.\n");
#else
printf("To generate a master key, please enter some random data.\n");
printf("You do not have to remember this.\n");
#endif
fflush(stdout);
if (kdb_get_master_key (KDB_GET_TWICE, &master_key,
master_key_schedule) != 0)
errx (1, "Couldn't read master key.");
#ifdef RANDOM_MKEY
if(kdb_kstash(&master_key, MKEYFILE) < 0)
err (1, "Error writing master key");
fprintf(stderr, "Wrote master key to %s\n", MKEYFILE);
#endif
/* Initialize non shared random sequence */
des_init_random_number_generator(&master_key);
/* Maximum lifetime for changepw.kerberos (kadmin) tickets, 10 minutes */
#define ADMLIFE (1 + (CLOCK_SKEW/(5*60)))
/* Maximum lifetime for ticket granting tickets, 4 days or 21.25h */
#define TGTLIFE ((krb_life_to_time(0, 162) >= 24*60*60) ? 161 : 255)
/* This means that default lifetimes have not been initialized */
#define DEFLIFE 255
#define NOLIFE 0
if (
add_principal(KERB_M_NAME, KERB_M_INST, MASTER_KEY, NOLIFE) ||
add_principal(KERB_DEFAULT_NAME, KERB_DEFAULT_INST, NULL_KEY,DEFLIFE)||
add_principal(KRB_TICKET_GRANTING_TICKET, realm, RANDOM_KEY, TGTLIFE)||
add_principal(PWSERV_NAME, KRB_MASTER, RANDOM_KEY, ADMLIFE)
) {
putc ('\n', stderr);
errx (1, "couldn't initialize database.");
}
/* play it safe */
memset(master_key, 0, sizeof (des_cblock));
memset(master_key_schedule, 0, sizeof (des_key_schedule));
return 0;
}
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