rename gssapi/ntlm/digest.c to kdc.c since that is what its talking too
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@25292 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
438
lib/gssapi/ntlm/kdc.c
Normal file
438
lib/gssapi/ntlm/kdc.c
Normal file
@@ -0,0 +1,438 @@
|
||||
/*
|
||||
* Copyright (c) 2006 - 2007 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 "ntlm.h"
|
||||
|
||||
#ifdef DIGEST
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
struct ntlmkrb5 {
|
||||
krb5_context context;
|
||||
krb5_ntlm ntlm;
|
||||
krb5_realm kerberos_realm;
|
||||
krb5_ccache id;
|
||||
krb5_data opaque;
|
||||
int destroy;
|
||||
OM_uint32 flags;
|
||||
struct ntlm_buf key;
|
||||
krb5_data sessionkey;
|
||||
};
|
||||
|
||||
static OM_uint32 kdc_destroy(OM_uint32 *, void *);
|
||||
|
||||
/*
|
||||
* Get credential cache that the ntlm code can use to talk to the KDC
|
||||
* using the digest API.
|
||||
*/
|
||||
|
||||
static krb5_error_code
|
||||
get_ccache(krb5_context context, int *destroy, krb5_ccache *id)
|
||||
{
|
||||
krb5_principal principal = NULL;
|
||||
krb5_error_code ret;
|
||||
krb5_keytab kt = NULL;
|
||||
|
||||
*id = NULL;
|
||||
|
||||
if (!issuid()) {
|
||||
const char *cache;
|
||||
|
||||
cache = getenv("NTLM_ACCEPTOR_CCACHE");
|
||||
if (cache) {
|
||||
ret = krb5_cc_resolve(context, cache, id);
|
||||
if (ret)
|
||||
goto out;
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
ret = krb5_sname_to_principal(context, NULL, "host",
|
||||
KRB5_NT_SRV_HST, &principal);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
ret = krb5_cc_cache_match(context, principal, id);
|
||||
if (ret == 0)
|
||||
return 0;
|
||||
|
||||
/* did not find in default credcache, lets try default keytab */
|
||||
ret = krb5_kt_default(context, &kt);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
/* XXX check in keytab */
|
||||
{
|
||||
krb5_get_init_creds_opt *opt;
|
||||
krb5_creds cred;
|
||||
|
||||
memset(&cred, 0, sizeof(cred));
|
||||
|
||||
ret = krb5_cc_new_unique(context, "MEMORY", NULL, id);
|
||||
if (ret)
|
||||
goto out;
|
||||
*destroy = 1;
|
||||
ret = krb5_get_init_creds_opt_alloc(context, &opt);
|
||||
if (ret)
|
||||
goto out;
|
||||
ret = krb5_get_init_creds_keytab (context,
|
||||
&cred,
|
||||
principal,
|
||||
kt,
|
||||
0,
|
||||
NULL,
|
||||
opt);
|
||||
krb5_get_init_creds_opt_free(context, opt);
|
||||
if (ret)
|
||||
goto out;
|
||||
ret = krb5_cc_initialize (context, *id, cred.client);
|
||||
if (ret) {
|
||||
krb5_free_cred_contents (context, &cred);
|
||||
goto out;
|
||||
}
|
||||
ret = krb5_cc_store_cred (context, *id, &cred);
|
||||
krb5_free_cred_contents (context, &cred);
|
||||
if (ret)
|
||||
goto out;
|
||||
}
|
||||
|
||||
krb5_kt_close(context, kt);
|
||||
|
||||
return 0;
|
||||
|
||||
out:
|
||||
if (*id) {
|
||||
if (*destroy)
|
||||
krb5_cc_destroy(context, *id);
|
||||
else
|
||||
krb5_cc_close(context, *id);
|
||||
*id = NULL;
|
||||
}
|
||||
|
||||
if (kt)
|
||||
krb5_kt_close(context, kt);
|
||||
|
||||
if (principal)
|
||||
krb5_free_principal(context, principal);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
static OM_uint32
|
||||
kdc_alloc(OM_uint32 *minor, void **ctx)
|
||||
{
|
||||
krb5_error_code ret;
|
||||
struct ntlmkrb5 *c;
|
||||
OM_uint32 junk;
|
||||
|
||||
c = calloc(1, sizeof(*c));
|
||||
if (c == NULL) {
|
||||
*minor = ENOMEM;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
|
||||
ret = krb5_init_context(&c->context);
|
||||
if (ret) {
|
||||
kdc_destroy(&junk, c);
|
||||
*minor = ret;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
|
||||
ret = get_ccache(c->context, &c->destroy, &c->id);
|
||||
if (ret) {
|
||||
kdc_destroy(&junk, c);
|
||||
*minor = ret;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
|
||||
ret = krb5_ntlm_alloc(c->context, &c->ntlm);
|
||||
if (ret) {
|
||||
kdc_destroy(&junk, c);
|
||||
*minor = ret;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
|
||||
*ctx = c;
|
||||
|
||||
return GSS_S_COMPLETE;
|
||||
}
|
||||
|
||||
static int
|
||||
kdc_probe(OM_uint32 *minor, void *ctx, const char *realm)
|
||||
{
|
||||
struct ntlmkrb5 *c = ctx;
|
||||
krb5_error_code ret;
|
||||
unsigned flags;
|
||||
|
||||
ret = krb5_digest_probe(c->context, rk_UNCONST(realm), c->id, &flags);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if ((flags & (1|2|4)) == 0)
|
||||
return EINVAL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
static OM_uint32
|
||||
kdc_destroy(OM_uint32 *minor, void *ctx)
|
||||
{
|
||||
struct ntlmkrb5 *c = ctx;
|
||||
krb5_data_free(&c->opaque);
|
||||
krb5_data_free(&c->sessionkey);
|
||||
if (c->ntlm)
|
||||
krb5_ntlm_free(c->context, c->ntlm);
|
||||
if (c->id) {
|
||||
if (c->destroy)
|
||||
krb5_cc_destroy(c->context, c->id);
|
||||
else
|
||||
krb5_cc_close(c->context, c->id);
|
||||
}
|
||||
if (c->context)
|
||||
krb5_free_context(c->context);
|
||||
memset(c, 0, sizeof(*c));
|
||||
free(c);
|
||||
|
||||
return GSS_S_COMPLETE;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
static OM_uint32
|
||||
kdc_type2(OM_uint32 *minor_status,
|
||||
void *ctx,
|
||||
uint32_t flags,
|
||||
const char *hostname,
|
||||
const char *domain,
|
||||
uint32_t *ret_flags,
|
||||
struct ntlm_buf *out)
|
||||
{
|
||||
struct ntlmkrb5 *c = ctx;
|
||||
krb5_error_code ret;
|
||||
struct ntlm_type2 type2;
|
||||
krb5_data challange;
|
||||
struct ntlm_buf data;
|
||||
krb5_data ti;
|
||||
|
||||
memset(&type2, 0, sizeof(type2));
|
||||
|
||||
/*
|
||||
* Request data for type 2 packet from the KDC.
|
||||
*/
|
||||
ret = krb5_ntlm_init_request(c->context,
|
||||
c->ntlm,
|
||||
NULL,
|
||||
c->id,
|
||||
flags,
|
||||
hostname,
|
||||
domain);
|
||||
if (ret) {
|
||||
*minor_status = ret;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
ret = krb5_ntlm_init_get_opaque(c->context, c->ntlm, &c->opaque);
|
||||
if (ret) {
|
||||
*minor_status = ret;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
ret = krb5_ntlm_init_get_flags(c->context, c->ntlm, &type2.flags);
|
||||
if (ret) {
|
||||
*minor_status = ret;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
*ret_flags = type2.flags;
|
||||
|
||||
ret = krb5_ntlm_init_get_challange(c->context, c->ntlm, &challange);
|
||||
if (ret) {
|
||||
*minor_status = ret;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
|
||||
if (challange.length != sizeof(type2.challange)) {
|
||||
*minor_status = EINVAL;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
memcpy(type2.challange, challange.data, sizeof(type2.challange));
|
||||
krb5_data_free(&challange);
|
||||
|
||||
ret = krb5_ntlm_init_get_targetname(c->context, c->ntlm,
|
||||
&type2.targetname);
|
||||
if (ret) {
|
||||
*minor_status = ret;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
|
||||
ret = krb5_ntlm_init_get_targetinfo(c->context, c->ntlm, &ti);
|
||||
if (ret) {
|
||||
free(type2.targetname);
|
||||
*minor_status = ret;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
|
||||
type2.targetinfo.data = ti.data;
|
||||
type2.targetinfo.length = ti.length;
|
||||
|
||||
ret = heim_ntlm_encode_type2(&type2, &data);
|
||||
free(type2.targetname);
|
||||
krb5_data_free(&ti);
|
||||
if (ret) {
|
||||
*minor_status = ret;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
|
||||
out->data = data.data;
|
||||
out->length = data.length;
|
||||
|
||||
return GSS_S_COMPLETE;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
static OM_uint32
|
||||
kdc_type3(OM_uint32 *minor_status,
|
||||
void *ctx,
|
||||
const struct ntlm_type3 *type3,
|
||||
struct ntlm_buf *sessionkey)
|
||||
{
|
||||
struct ntlmkrb5 *c = ctx;
|
||||
krb5_error_code ret;
|
||||
|
||||
sessionkey->data = NULL;
|
||||
sessionkey->length = 0;
|
||||
|
||||
ret = krb5_ntlm_req_set_flags(c->context, c->ntlm, type3->flags);
|
||||
if (ret) goto out;
|
||||
ret = krb5_ntlm_req_set_username(c->context, c->ntlm, type3->username);
|
||||
if (ret) goto out;
|
||||
ret = krb5_ntlm_req_set_targetname(c->context, c->ntlm,
|
||||
type3->targetname);
|
||||
if (ret) goto out;
|
||||
ret = krb5_ntlm_req_set_lm(c->context, c->ntlm,
|
||||
type3->lm.data, type3->lm.length);
|
||||
if (ret) goto out;
|
||||
ret = krb5_ntlm_req_set_ntlm(c->context, c->ntlm,
|
||||
type3->ntlm.data, type3->ntlm.length);
|
||||
if (ret) goto out;
|
||||
ret = krb5_ntlm_req_set_opaque(c->context, c->ntlm, &c->opaque);
|
||||
if (ret) goto out;
|
||||
|
||||
if (type3->sessionkey.length) {
|
||||
ret = krb5_ntlm_req_set_session(c->context, c->ntlm,
|
||||
type3->sessionkey.data,
|
||||
type3->sessionkey.length);
|
||||
if (ret) goto out;
|
||||
}
|
||||
|
||||
/*
|
||||
* Verify with the KDC the type3 packet is ok
|
||||
*/
|
||||
ret = krb5_ntlm_request(c->context,
|
||||
c->ntlm,
|
||||
NULL,
|
||||
c->id);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
if (krb5_ntlm_rep_get_status(c->context, c->ntlm) != TRUE) {
|
||||
ret = EINVAL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (type3->sessionkey.length) {
|
||||
ret = krb5_ntlm_rep_get_sessionkey(c->context,
|
||||
c->ntlm,
|
||||
&c->sessionkey);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
sessionkey->data = c->sessionkey.data;
|
||||
sessionkey->length = c->sessionkey.length;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
out:
|
||||
*minor_status = ret;
|
||||
return GSS_S_FAILURE;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
static void
|
||||
kdc_free_buffer(struct ntlm_buf *sessionkey)
|
||||
{
|
||||
if (sessionkey->data)
|
||||
free(sessionkey->data);
|
||||
sessionkey->data = NULL;
|
||||
sessionkey->length = 0;
|
||||
}
|
||||
|
||||
/*
|
||||
*
|
||||
*/
|
||||
|
||||
struct ntlm_server_interface ntlmsspi_kdc_digest = {
|
||||
kdc_alloc,
|
||||
kdc_destroy,
|
||||
kdc_probe,
|
||||
kdc_type2,
|
||||
kdc_type3,
|
||||
kdc_free_buffer
|
||||
};
|
||||
|
||||
#endif /* DIGEST */
|
||||
Reference in New Issue
Block a user