freebsd-skq/eBones/usr.sbin/kdb_util/kdb_util.c
Geoff Rehmet 60643d379b Initial import of eBones.
(Including all changes for FreeBSD - importing the original eBones distribution
would be too complex at this stage, since I don't have access to Piero's 
CVS.)
(If you want to include eBones in your system, don't forget to include
MAKE_EBONES in /etc/make.conf.)
(This stuff is now also suppable from braae.ru.ac.za.)

Bones originally from MIT SIPB.
Original port to FreeBSD 1.x  by Piero Serini.
Moved to FreeBSD 2.0 by Doug Rabson and Geoff Rehmet.
Nice bug fixes from Doug Rabson.
1994-09-30 14:50:09 +00:00

507 lines
13 KiB
C

/*
* Copyright 1987, 1988 by the Massachusetts Institute of Technology.
* For copying and distribution information, please see the file
* <Copyright.MIT>.
*
* Kerberos database manipulation utility. This program allows you to
* dump a kerberos database to an ascii readable file and load this
* file into the database. Read locking of the database is done during a
* dump operation. NO LOCKING is done during a load operation. Loads
* should happen with other processes shutdown.
*
* Written July 9, 1987 by Jeffrey I. Schiller
*
* from: kdb_util.c,v 4.4 90/01/09 15:57:20 raeburn Exp $
* $Id: kdb_util.c,v 1.3 1994/09/24 14:04:21 g89r4222 Exp $
*/
#ifndef lint
static char rcsid[] =
"$Id: kdb_util.c,v 1.3 1994/09/24 14:04:21 g89r4222 Exp $";
#endif lint
#include <stdio.h>
#include <sys/types.h>
#include <netinet/in.h>
#include "time.h"
#include <strings.h>
#include <des.h>
#include <krb.h>
#include <sys/file.h>
#include <krb_db.h>
#define TRUE 1
Principal aprinc;
static des_cblock master_key, new_master_key;
static des_key_schedule master_key_schedule, new_master_key_schedule;
#define zaptime(foo) bzero((char *)(foo), sizeof(*(foo)))
extern long kdb_get_master_key(), kdb_verify_master_key();
extern char *malloc();
extern int errno;
char * progname;
main(argc, argv)
int argc;
char **argv;
{
FILE *file;
enum {
OP_LOAD,
OP_DUMP,
OP_SLAVE_DUMP,
OP_NEW_MASTER,
OP_CONVERT_OLD_DB,
} op;
char *file_name;
char *prog = argv[0];
char *db_name;
progname = prog;
if (argc != 3 && argc != 4) {
fprintf(stderr, "Usage: %s operation file-name [database name].\n",
argv[0]);
exit(1);
}
if (argc == 3)
db_name = DBM_FILE;
else
db_name = argv[3];
if (kerb_db_set_name (db_name) != 0) {
perror("Can't open database");
exit(1);
}
if (!strcmp(argv[1], "load"))
op = OP_LOAD;
else if (!strcmp(argv[1], "dump"))
op = OP_DUMP;
else if (!strcmp(argv[1], "slave_dump"))
op = OP_SLAVE_DUMP;
else if (!strcmp(argv[1], "new_master_key"))
op = OP_NEW_MASTER;
else if (!strcmp(argv[1], "convert_old_db"))
op = OP_CONVERT_OLD_DB;
else {
fprintf(stderr,
"%s: %s is an invalid operation.\n", prog, argv[1]);
fprintf(stderr,
"%s: Valid operations are \"dump\", \"slave_dump\",", argv[0]);
fprintf(stderr,
"\"load\", \"new_master_key\", and \"convert_old_db\".\n");
exit(1);
}
file_name = argv[2];
file = fopen(file_name, op == OP_LOAD ? "r" : "w");
if (file == NULL) {
fprintf(stderr, "%s: Unable to open %s\n", prog, argv[2]);
(void) fflush(stderr);
perror("open");
exit(1);
}
switch (op) {
case OP_DUMP:
if ((dump_db (db_name, file, (void (*)()) 0) == EOF) ||
(fclose(file) == EOF)) {
fprintf(stderr, "error on file %s:", file_name);
perror("");
exit(1);
}
break;
case OP_SLAVE_DUMP:
if ((dump_db (db_name, file, (void (*)()) 0) == EOF) ||
(fclose(file) == EOF)) {
fprintf(stderr, "error on file %s:", file_name);
perror("");
exit(1);
}
update_ok_file (file_name);
break;
case OP_LOAD:
load_db (db_name, file);
break;
case OP_NEW_MASTER:
convert_new_master_key (db_name, file);
printf("Don't forget to do a `kdb_util load %s' to reload the database!\n", file_name);
break;
case OP_CONVERT_OLD_DB:
convert_old_format_db (db_name, file);
printf("Don't forget to do a `kdb_util load %s' to reload the database!\n", file_name);
break;
}
exit(0);
}
clear_secrets ()
{
bzero((char *)master_key, sizeof (des_cblock));
bzero((char *)master_key_schedule, sizeof (Key_schedule));
bzero((char *)new_master_key, sizeof (des_cblock));
bzero((char *)new_master_key_schedule, sizeof (Key_schedule));
}
/* cv_key is a procedure which takes a principle and changes its key,
either for a new method of encrypting the keys, or a new master key.
if cv_key is null no transformation of key is done (other than net byte
order). */
struct callback_args {
void (*cv_key)();
FILE *output_file;
};
static int dump_db_1(arg, principal)
char *arg;
Principal *principal;
{ /* replace null strings with "*" */
struct callback_args *a = (struct callback_args *)arg;
if (principal->instance[0] == '\0') {
principal->instance[0] = '*';
principal->instance[1] = '\0';
}
if (principal->mod_name[0] == '\0') {
principal->mod_name[0] = '*';
principal->mod_name[1] = '\0';
}
if (principal->mod_instance[0] == '\0') {
principal->mod_instance[0] = '*';
principal->mod_instance[1] = '\0';
}
if (a->cv_key != NULL) {
(*a->cv_key) (principal);
}
fprintf(a->output_file, "%s %s %d %d %d %d %x %x",
principal->name,
principal->instance,
principal->max_life,
principal->kdc_key_ver,
principal->key_version,
principal->attributes,
htonl (principal->key_low),
htonl (principal->key_high));
print_time(a->output_file, principal->exp_date);
print_time(a->output_file, principal->mod_date);
fprintf(a->output_file, " %s %s\n",
principal->mod_name,
principal->mod_instance);
return 0;
}
dump_db (db_file, output_file, cv_key)
char *db_file;
FILE *output_file;
void (*cv_key)();
{
struct callback_args a;
a.cv_key = cv_key;
a.output_file = output_file;
kerb_db_iterate (dump_db_1, (char *)&a);
return fflush(output_file);
}
load_db (db_file, input_file)
char *db_file;
FILE *input_file;
{
char exp_date_str[50];
char mod_date_str[50];
int temp1, temp2, temp3;
long time_explode();
int code;
char *temp_db_file;
temp1 = strlen(db_file+2);
temp_db_file = malloc (temp1);
strcpy(temp_db_file, db_file);
strcat(temp_db_file, "~");
/* Create the database */
if ((code = kerb_db_create(temp_db_file)) != 0) {
fprintf(stderr, "Couldn't create temp database %s: %s\n",
temp_db_file, sys_errlist[code]);
exit(1);
}
kerb_db_set_name(temp_db_file);
for (;;) { /* explicit break on eof from fscanf */
bzero((char *)&aprinc, sizeof(aprinc));
if (fscanf(input_file,
"%s %s %d %d %d %hd %x %x %s %s %s %s\n",
aprinc.name,
aprinc.instance,
&temp1,
&temp2,
&temp3,
&aprinc.attributes,
&aprinc.key_low,
&aprinc.key_high,
exp_date_str,
mod_date_str,
aprinc.mod_name,
aprinc.mod_instance) == EOF)
break;
aprinc.key_low = ntohl (aprinc.key_low);
aprinc.key_high = ntohl (aprinc.key_high);
aprinc.max_life = (unsigned char) temp1;
aprinc.kdc_key_ver = (unsigned char) temp2;
aprinc.key_version = (unsigned char) temp3;
aprinc.exp_date = time_explode(exp_date_str);
aprinc.mod_date = time_explode(mod_date_str);
if (aprinc.instance[0] == '*')
aprinc.instance[0] = '\0';
if (aprinc.mod_name[0] == '*')
aprinc.mod_name[0] = '\0';
if (aprinc.mod_instance[0] == '*')
aprinc.mod_instance[0] = '\0';
if (kerb_db_put_principal(&aprinc, 1) != 1) {
fprintf(stderr, "Couldn't store %s.%s: %s; load aborted\n",
aprinc.name, aprinc.instance,
sys_errlist[errno]);
exit(1);
};
}
if ((code = kerb_db_rename(temp_db_file, db_file)) != 0)
perror("database rename failed");
(void) fclose(input_file);
free(temp_db_file);
}
print_time(file, timeval)
FILE *file;
unsigned long timeval;
{
struct tm *tm;
struct tm *gmtime();
tm = gmtime((long *)&timeval);
fprintf(file, " %04d%02d%02d%02d%02d",
tm->tm_year < 1900 ? tm->tm_year + 1900: tm->tm_year,
tm->tm_mon + 1,
tm->tm_mday,
tm->tm_hour,
tm->tm_min);
}
/*ARGSUSED*/
update_ok_file (file_name)
char *file_name;
{
/* handle slave locking/failure stuff */
char *file_ok;
int fd;
static char ok[]=".dump_ok";
if ((file_ok = (char *)malloc(strlen(file_name) + strlen(ok) + 1))
== NULL) {
fprintf(stderr, "kdb_util: out of memory.\n");
(void) fflush (stderr);
perror ("malloc");
exit (1);
}
strcpy(file_ok, file_name);
strcat(file_ok, ok);
if ((fd = open(file_ok, O_WRONLY|O_CREAT|O_TRUNC, 0400)) < 0) {
fprintf(stderr, "Error creating 'ok' file, '%s'", file_ok);
perror("");
(void) fflush (stderr);
exit (1);
}
free(file_ok);
close(fd);
}
void
convert_key_new_master (p)
Principal *p;
{
des_cblock key;
/* leave null keys alone */
if ((p->key_low == 0) && (p->key_high == 0)) return;
/* move current key to des_cblock for encryption, special case master key
since that's changing */
if ((strncmp (p->name, KERB_M_NAME, ANAME_SZ) == 0) &&
(strncmp (p->instance, KERB_M_INST, INST_SZ) == 0)) {
bcopy((char *)new_master_key, (char *) key, sizeof (des_cblock));
(p->key_version)++;
} else {
bcopy((char *)&(p->key_low), (char *)key, 4);
bcopy((char *)&(p->key_high), (char *) (((long *) key) + 1), 4);
kdb_encrypt_key (key, key, master_key, master_key_schedule, DECRYPT);
}
kdb_encrypt_key (key, key, new_master_key, new_master_key_schedule, ENCRYPT);
bcopy((char *)key, (char *)&(p->key_low), 4);
bcopy((char *)(((long *) key) + 1), (char *)&(p->key_high), 4);
bzero((char *)key, sizeof (key)); /* a little paranoia ... */
(p->kdc_key_ver)++;
}
convert_new_master_key (db_file, out)
char *db_file;
FILE *out;
{
printf ("\n\nEnter the CURRENT master key.");
if (kdb_get_master_key (TRUE, master_key, master_key_schedule) != 0) {
fprintf (stderr, "%s: Couldn't get master key.\n");
clear_secrets ();
exit (-1);
}
if (kdb_verify_master_key (master_key, master_key_schedule, stderr) < 0) {
clear_secrets ();
exit (-1);
}
printf ("\n\nNow enter the NEW master key. Do not forget it!!");
if (kdb_get_master_key (TRUE, new_master_key, new_master_key_schedule) != 0) {
fprintf (stderr, "%s: Couldn't get new master key.\n");
clear_secrets ();
exit (-1);
}
dump_db (db_file, out, convert_key_new_master);
}
void
convert_key_old_db (p)
Principal *p;
{
des_cblock key;
/* leave null keys alone */
if ((p->key_low == 0) && (p->key_high == 0)) return;
bcopy((char *)&(p->key_low), (char *)key, 4);
bcopy((char *)&(p->key_high), (char *)(((long *) key) + 1), 4);
#ifndef NOENCRYPTION
des_pcbc_encrypt((des_cblock *)key,(des_cblock *)key,
(long)sizeof(des_cblock),master_key_schedule,
(des_cblock *)master_key_schedule,DECRYPT);
#endif
/* make new key, new style */
kdb_encrypt_key (key, key, master_key, master_key_schedule, ENCRYPT);
bcopy((char *)key, (char *)&(p->key_low), 4);
bcopy((char *)(((long *) key) + 1), (char *)&(p->key_high), 4);
bzero((char *)key, sizeof (key)); /* a little paranoia ... */
}
convert_old_format_db (db_file, out)
char *db_file;
FILE *out;
{
des_cblock key_from_db;
Principal principal_data[1];
int n, more;
if (kdb_get_master_key (TRUE, master_key, master_key_schedule) != 0L) {
fprintf (stderr, "%s: Couldn't get master key.\n");
clear_secrets();
exit (-1);
}
/* can't call kdb_verify_master_key because this is an old style db */
/* lookup the master key version */
n = kerb_get_principal(KERB_M_NAME, KERB_M_INST, principal_data,
1 /* only one please */, &more);
if ((n != 1) || more) {
fprintf(stderr, "verify_master_key: ",
"Kerberos error on master key lookup, %d found.\n",
n);
exit (-1);
}
/* set up the master key */
fprintf(stderr, "Current Kerberos master key version is %d.\n",
principal_data[0].kdc_key_ver);
/*
* now use the master key to decrypt (old style) the key in the db, had better
* be the same!
*/
bcopy((char *)&principal_data[0].key_low, (char *)key_from_db, 4);
bcopy((char *)&principal_data[0].key_high,
(char *)(((long *) key_from_db) + 1), 4);
#ifndef NOENCRYPTION
des_pcbc_encrypt(key_from_db,key_from_db,(long)sizeof(key_from_db),
master_key_schedule,(des_cblock *)master_key_schedule,DECRYPT);
#endif
/* the decrypted database key had better equal the master key */
n = bcmp((char *) master_key, (char *) key_from_db,
sizeof(master_key));
bzero((char *)key_from_db, sizeof(key_from_db));
if (n) {
fprintf(stderr, "\n\07\07%verify_master_key: Invalid master key, ");
fprintf(stderr, "does not match database.\n");
exit (-1);
}
fprintf(stderr, "Master key verified.\n");
(void) fflush(stderr);
dump_db (db_file, out, convert_key_old_db);
}
long
time_explode(cp)
register char *cp;
{
char wbuf[5];
struct tm tp;
long maketime();
int local;
zaptime(&tp); /* clear out the struct */
if (strlen(cp) > 10) { /* new format */
(void) strncpy(wbuf, cp, 4);
wbuf[4] = 0;
tp.tm_year = atoi(wbuf);
cp += 4; /* step over the year */
local = 0; /* GMT */
} else { /* old format: local time,
year is 2 digits, assuming 19xx */
wbuf[0] = *cp++;
wbuf[1] = *cp++;
wbuf[2] = 0;
tp.tm_year = 1900 + atoi(wbuf);
local = 1; /* local */
}
wbuf[0] = *cp++;
wbuf[1] = *cp++;
wbuf[2] = 0;
tp.tm_mon = atoi(wbuf)-1;
wbuf[0] = *cp++;
wbuf[1] = *cp++;
tp.tm_mday = atoi(wbuf);
wbuf[0] = *cp++;
wbuf[1] = *cp++;
tp.tm_hour = atoi(wbuf);
wbuf[0] = *cp++;
wbuf[1] = *cp++;
tp.tm_min = atoi(wbuf);
return(maketime(&tp, local));
}