OpenBSD-4.6/kerberosV/src/kdc/mit_dump.c
/*
* Copyright (c) 2000 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "hprop.h"
RCSID("$KTH: mit_dump.c,v 1.5 2005/06/02 09:55:43 lha Exp $");
/*
can have any number of princ stanzas.
format is as follows (only \n indicates newlines)
princ\t%d\t (%d is KRB5_KDB_V1_BASE_LENGTH, always 38)
%d\t (strlen of principal e.g. shadow/foo@ANDREW.CMU.EDU)
%d\t (number of tl_data)
%d\t (number of key data, e.g. how many keys for this user)
%d\t (extra data length)
%s\t (principal name)
%d\t (attributes)
%d\t (max lifetime, seconds)
%d\t (max renewable life, seconds)
%d\t (expiration, seconds since epoch or 2145830400 for never)
%d\t (password expiration, seconds, 0 for never)
%d\t (last successful auth, seconds since epoch)
%d\t (last failed auth, per above)
%d\t (failed auth count)
foreach tl_data 0 to number of tl_data - 1 as above
%d\t%d\t (data type, data length)
foreach tl_data 0 to length-1
%02x (tl data contents[element n])
except if tl_data length is 0
%d (always -1)
\t
foreach key 0 to number of keys - 1 as above
%d\t%d\t (key data version, kvno)
foreach version 0 to key data version - 1 (a key or a salt)
%d\t%d\t(data type for this key, data length for this key)
foreach key data length 0 to length-1
%02x (key data contents[element n])
except if key_data length is 0
%d (always -1)
\t
foreach extra data length 0 to length - 1
%02x (extra data part)
unless no extra data
%d (always -1)
;\n
*/
static int
hex_to_octet_string(const char *ptr, krb5_data *data)
{
int i;
unsigned int v;
for(i = 0; i < data->length; i++) {
if(sscanf(ptr + 2 * i, "%02x", &v) != 1)
return -1;
((unsigned char*)data->data)[i] = v;
}
return 2 * i;
}
static char *
nexttoken(char **p)
{
char *q;
do {
q = strsep(p, " \t");
} while(q && *q == '\0');
return q;
}
static size_t
getdata(char **p, unsigned char *buf, size_t len)
{
size_t i;
int v;
char *q = nexttoken(p);
i = 0;
while(*q && i < len) {
if(sscanf(q, "%02x", &v) != 1)
break;
buf[i++] = v;
q += 2;
}
return i;
}
static int
getint(char **p)
{
int val;
char *q = nexttoken(p);
sscanf(q, "%d", &val);
return val;
}
#include <kadm5/admin.h>
static void
attr_to_flags(unsigned attr, HDBFlags *flags)
{
flags->postdate = !(attr & KRB5_KDB_DISALLOW_POSTDATED);
flags->forwardable = !(attr & KRB5_KDB_DISALLOW_FORWARDABLE);
flags->initial = !!(attr & KRB5_KDB_DISALLOW_TGT_BASED);
flags->renewable = !(attr & KRB5_KDB_DISALLOW_RENEWABLE);
flags->proxiable = !(attr & KRB5_KDB_DISALLOW_PROXIABLE);
/* DUP_SKEY */
flags->invalid = !!(attr & KRB5_KDB_DISALLOW_ALL_TIX);
flags->require_preauth = !!(attr & KRB5_KDB_REQUIRES_PRE_AUTH);
/* HW_AUTH */
flags->server = !(attr & KRB5_KDB_DISALLOW_SVR);
flags->change_pw = !!(attr & KRB5_KDB_PWCHANGE_SERVICE);
flags->client = 1; /* XXX */
}
#define KRB5_KDB_SALTTYPE_NORMAL 0
#define KRB5_KDB_SALTTYPE_V4 1
#define KRB5_KDB_SALTTYPE_NOREALM 2
#define KRB5_KDB_SALTTYPE_ONLYREALM 3
#define KRB5_KDB_SALTTYPE_SPECIAL 4
#define KRB5_KDB_SALTTYPE_AFS3 5
static krb5_error_code
fix_salt(krb5_context context, hdb_entry *ent, int key_num)
{
krb5_error_code ret;
Salt *salt = ent->keys.val[key_num].salt;
/* fix salt type */
switch((int)salt->type) {
case KRB5_KDB_SALTTYPE_NORMAL:
salt->type = KRB5_PADATA_PW_SALT;
break;
case KRB5_KDB_SALTTYPE_V4:
krb5_data_free(&salt->salt);
salt->type = KRB5_PADATA_PW_SALT;
break;
case KRB5_KDB_SALTTYPE_NOREALM:
{
size_t len;
int i;
krb5_error_code ret;
char *p;
len = 0;
for (i = 0; i < ent->principal->name.name_string.len; ++i)
len += strlen(ent->principal->name.name_string.val[i]);
ret = krb5_data_alloc (&salt->salt, len);
if (ret)
return ret;
p = salt->salt.data;
for (i = 0; i < ent->principal->name.name_string.len; ++i) {
memcpy (p,
ent->principal->name.name_string.val[i],
strlen(ent->principal->name.name_string.val[i]));
p += strlen(ent->principal->name.name_string.val[i]);
}
salt->type = KRB5_PADATA_PW_SALT;
break;
}
case KRB5_KDB_SALTTYPE_ONLYREALM:
krb5_data_free(&salt->salt);
ret = krb5_data_copy(&salt->salt,
ent->principal->realm,
strlen(ent->principal->realm));
if(ret)
return ret;
salt->type = KRB5_PADATA_PW_SALT;
break;
case KRB5_KDB_SALTTYPE_SPECIAL:
salt->type = KRB5_PADATA_PW_SALT;
break;
case KRB5_KDB_SALTTYPE_AFS3:
krb5_data_free(&salt->salt);
ret = krb5_data_copy(&salt->salt,
ent->principal->realm,
strlen(ent->principal->realm));
if(ret)
return ret;
salt->type = KRB5_PADATA_AFS3_SALT;
break;
default:
abort();
}
return 0;
}
int
mit_prop_dump(void *arg, const char *file)
{
krb5_error_code ret;
char buf [1024];
FILE *f;
int lineno = 0;
struct hdb_entry ent;
struct prop_data *pd = arg;
f = fopen(file, "r");
if(f == NULL)
return errno;
while(fgets(buf, sizeof(buf), f)) {
char *p = buf, *q;
int i;
int num_tl_data;
int num_key_data;
int extra_data_length;
int attributes;
int tmp;
lineno++;
memset(&ent, 0, sizeof(ent));
q = nexttoken(&p);
if(strcmp(q, "kdb5_util") == 0) {
int major;
q = nexttoken(&p); /* load_dump */
if(strcmp(q, "load_dump"))
errx(1, "line %d: unknown version", lineno);
q = nexttoken(&p); /* load_dump */
if(strcmp(q, "version"))
errx(1, "line %d: unknown version", lineno);
q = nexttoken(&p); /* x.0 */
if(sscanf(q, "%d", &major) != 1)
errx(1, "line %d: unknown version", lineno);
if(major != 4)
errx(1, "unknown dump file format, got %d, expected 4", major);
continue;
} else if(strcmp(q, "princ") != 0) {
warnx("line %d: not a principal", lineno);
continue;
}
tmp = getint(&p);
if(tmp != 38) {
warnx("line %d: bad base length %d != 38", lineno, tmp);
continue;
}
q = nexttoken(&p); /* length of principal */
num_tl_data = getint(&p); /* number of tl-data */
num_key_data = getint(&p); /* number of key-data */
extra_data_length = getint(&p); /* length of extra data */
q = nexttoken(&p); /* principal name */
krb5_parse_name(pd->context, q, &ent.principal);
attributes = getint(&p); /* attributes */
attr_to_flags(attributes, &ent.flags);
tmp = getint(&p); /* max life */
if(tmp != 0) {
ALLOC(ent.max_life);
*ent.max_life = tmp;
}
tmp = getint(&p); /* max renewable life */
if(tmp != 0) {
ALLOC(ent.max_renew);
*ent.max_renew = tmp;
}
tmp = getint(&p); /* expiration */
if(tmp != 0 && tmp != 2145830400) {
ALLOC(ent.valid_end);
*ent.valid_end = tmp;
}
tmp = getint(&p); /* pw expiration */
if(tmp != 0) {
ALLOC(ent.pw_end);
*ent.pw_end = tmp;
}
q = nexttoken(&p); /* last auth */
q = nexttoken(&p); /* last failed auth */
q = nexttoken(&p); /* fail auth count */
for(i = 0; i < num_tl_data; i++) {
unsigned long val;
int tl_type, tl_length;
unsigned char *buf;
krb5_principal princ;
tl_type = getint(&p); /* data type */
tl_length = getint(&p); /* data length */
#define mit_KRB5_TL_LAST_PWD_CHANGE 1
#define mit_KRB5_TL_MOD_PRINC 2
switch(tl_type) {
case mit_KRB5_TL_MOD_PRINC:
buf = malloc(tl_length);
getdata(&p, buf, tl_length); /* data itself */
val = buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
ret = krb5_parse_name(pd->context, (char *)buf + 4, &princ);
free(buf);
ALLOC(ent.modified_by);
ent.modified_by->time = val;
ent.modified_by->principal = princ;
break;
default:
nexttoken(&p);
break;
}
}
ALLOC_SEQ(&ent.keys, num_key_data);
for(i = 0; i < num_key_data; i++) {
int key_versions;
key_versions = getint(&p); /* key data version */
ent.kvno = getint(&p); /* XXX kvno */
ALLOC(ent.keys.val[i].mkvno);
*ent.keys.val[i].mkvno = 0;
/* key version 0 -- actual key */
ent.keys.val[i].key.keytype = getint(&p); /* key type */
tmp = getint(&p); /* key length */
/* the first two bytes of the key is the key length --
skip it */
krb5_data_alloc(&ent.keys.val[i].key.keyvalue, tmp - 2);
q = nexttoken(&p); /* key itself */
hex_to_octet_string(q + 4, &ent.keys.val[i].key.keyvalue);
if(key_versions > 1) {
/* key version 1 -- optional salt */
ALLOC(ent.keys.val[i].salt);
ent.keys.val[i].salt->type = getint(&p); /* salt type */
tmp = getint(&p); /* salt length */
if(tmp > 0) {
krb5_data_alloc(&ent.keys.val[i].salt->salt, tmp - 2);
q = nexttoken(&p); /* salt itself */
hex_to_octet_string(q + 4, &ent.keys.val[i].salt->salt);
} else {
ent.keys.val[i].salt->salt.length = 0;
ent.keys.val[i].salt->salt.data = NULL;
tmp = getint(&p); /* -1, if no data. */
}
fix_salt(pd->context, &ent, i);
}
}
q = nexttoken(&p); /* extra data */
v5_prop(pd->context, NULL, &ent, arg);
}
fclose(f);
return 0;
}