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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@17692 ec53bebd-3082-4978-b11e-865c3cabbd6b
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Love Hörnquist Åstrand
2006-06-28 08:34:45 +00:00
parent 057d255d5c
commit 2baa7e7d61
98 changed files with 14146 additions and 0 deletions
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289
lib/gssapi/spnego/compat.c Normal file
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/*
* Copyright (c) 2004, PADL Software Pty Ltd.
* 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 PADL Software 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 PADL SOFTWARE 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 PADL SOFTWARE 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 "spnego_locl.h"
RCSID("$Id$");
/*
* Apparently Microsoft got the OID wrong, and used
* 1.2.840.48018.1.2.2 instead. We need both this and
* the correct Kerberos OID here in order to deal with
* this. Because this is manifest in SPNEGO only I'd
* prefer to deal with this here rather than inside the
* Kerberos mechanism.
*/
static gss_OID_desc gss_mskrb_mechanism_oid_desc =
{9, (void *)"\x2a\x86\x48\x82\xf7\x12\x01\x02\x02"};
static gss_OID_desc gss_krb5_mechanism_oid_desc =
{9, (void *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x02"};
/*
* Allocate a SPNEGO context handle
*/
OM_uint32 _gss_spnego_alloc_sec_context (OM_uint32 * minor_status,
gss_ctx_id_t *context_handle)
{
gss_ctx_id_t ctx;
ctx = malloc(sizeof(gss_ctx_id_t_desc));
if (ctx == NULL) {
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
ctx->initiator_mech_types.len = 0;
ctx->initiator_mech_types.val = NULL;
ctx->preferred_mech_type = NULL;
ctx->negotiated_mech_type = NULL;
ctx->negotiated_ctx_id = GSS_C_NO_CONTEXT;
/*
* Cache these so we can return them before returning
* GSS_S_COMPLETE, even if the mechanism has itself
* completed earlier
*/
ctx->mech_flags = 0;
ctx->mech_time_rec = 0;
ctx->mech_src_name = GSS_C_NO_NAME;
ctx->delegated_cred_id = GSS_C_NO_CREDENTIAL;
ctx->open = 0;
ctx->local = 0;
ctx->require_mic = 0;
ctx->verified_mic = 0;
HEIMDAL_MUTEX_init(&ctx->ctx_id_mutex);
*context_handle = ctx;
return GSS_S_COMPLETE;
}
/*
* Free a SPNEGO context handle. The caller must have acquired
* the lock before this is called.
*/
OM_uint32 _gss_spnego_delete_sec_context
(OM_uint32 *minor_status,
gss_ctx_id_t *context_handle,
gss_buffer_t output_token
)
{
gss_ctx_id_t ctx;
OM_uint32 ret, minor;
*minor_status = 0;
if (context_handle == NULL) {
return GSS_S_NO_CONTEXT;
}
if (output_token != GSS_C_NO_BUFFER) {
output_token->length = 0;
output_token->value = NULL;
}
ctx = *context_handle;
if (ctx == NULL) {
return GSS_S_NO_CONTEXT;
}
if (ctx->initiator_mech_types.val != NULL)
free_MechTypeList(&ctx->initiator_mech_types);
_gss_spnego_release_cred(&minor, &ctx->delegated_cred_id);
gss_release_oid(&minor, &ctx->preferred_mech_type);
gss_release_oid(&minor, &ctx->negotiated_mech_type);
gss_release_name(&minor, &ctx->mech_src_name);
if (ctx->negotiated_ctx_id != GSS_C_NO_CONTEXT) {
ret = gss_delete_sec_context(minor_status,
&ctx->negotiated_ctx_id,
output_token);
ctx->negotiated_ctx_id = GSS_C_NO_CONTEXT;
} else {
ret = GSS_S_COMPLETE;
}
HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
HEIMDAL_MUTEX_destroy(&ctx->ctx_id_mutex);
free(ctx);
*context_handle = NULL;
return ret;
}
/*
* For compatability with the Windows SPNEGO implementation, the
* default is to ignore the mechListMIC unless CFX is used and
* a non-preferred mechanism was negotiated
*/
OM_uint32
_gss_spnego_require_mechlist_mic(OM_uint32 *minor_status,
gss_ctx_id_t ctx,
int *require_mic)
{
gss_buffer_set_t buffer_set = GSS_C_NO_BUFFER_SET;
OM_uint32 minor;
*minor_status = 0;
*require_mic = 0;
if (ctx == GSS_C_NO_CONTEXT) {
return GSS_S_COMPLETE;
}
if (ctx->require_mic) {
/* Acceptor requested it: mandatory to honour */
*require_mic = 1;
return GSS_S_COMPLETE;
}
/*
* Check whether peer indicated implicit support for updated SPNEGO
* (eg. in the Kerberos case by using CFX)
*/
if (gss_inquire_sec_context_by_oid(&minor, ctx->negotiated_ctx_id,
GSS_C_PEER_HAS_UPDATED_SPNEGO,
&buffer_set) == GSS_S_COMPLETE) {
*require_mic = 1;
gss_release_buffer_set(&minor, &buffer_set);
}
/* Safe-to-omit MIC rules follow */
if (*require_mic) {
if (gss_oid_equal(ctx->negotiated_mech_type, ctx->preferred_mech_type)) {
*require_mic = 0;
} else if (gss_oid_equal(ctx->negotiated_mech_type, &gss_krb5_mechanism_oid_desc) &&
gss_oid_equal(ctx->preferred_mech_type, &gss_mskrb_mechanism_oid_desc)) {
*require_mic = 0;
}
}
return GSS_S_COMPLETE;
}
OM_uint32 gss_spnego_internal_release_oid(OM_uint32 *minor_status, gss_OID *OID)
{
*minor_status = 0;
if (*OID == GSS_SPNEGO_MECHANISM ||
*OID == &gss_mskrb_mechanism_oid_desc ||
*OID == &gss_krb5_mechanism_oid_desc) {
*OID = GSS_C_NO_OID;
return GSS_S_COMPLETE;
}
return GSS_S_FAILURE;
}
int _gss_spnego_add_mech_type(gss_OID mech_type,
int includeMSCompatOID,
MechTypeList *mechtypelist)
{
int ret;
if (gss_oid_equal(mech_type, GSS_SPNEGO_MECHANISM))
return 0;
if (includeMSCompatOID &&
gss_oid_equal(mech_type, &gss_krb5_mechanism_oid_desc)) {
ret = der_get_oid(gss_mskrb_mechanism_oid_desc.elements,
gss_mskrb_mechanism_oid_desc.length,
&mechtypelist->val[mechtypelist->len],
NULL);
if (ret)
return ret;
mechtypelist->len++;
}
ret = der_get_oid(mech_type->elements,
mech_type->length,
&mechtypelist->val[mechtypelist->len],
NULL);
if (ret)
return ret;
mechtypelist->len++;
return 0;
}
OM_uint32
_gss_spnego_select_mech(OM_uint32 *minor_status,
MechType *mechType,
gss_OID *mech_p)
{
char mechbuf[64];
size_t mech_len;
gss_OID_desc oid;
OM_uint32 ret;
gss_mechanism mech;
ret = der_put_oid (mechbuf + sizeof(mechbuf) - 1,
sizeof(mechbuf),
mechType,
&mech_len);
if (ret) {
return GSS_S_DEFECTIVE_TOKEN;
}
oid.length = mech_len;
oid.elements = mechbuf + sizeof(mechbuf) - mech_len;
if (gss_oid_equal(&oid, GSS_SPNEGO_MECHANISM)) {
return GSS_S_BAD_MECH;
}
*minor_status = 0;
/* Translate broken MS Kebreros OID */
if (gss_oid_equal(&oid, &gss_mskrb_mechanism_oid_desc)) {
mech = __gss_get_mechanism(&gss_krb5_mechanism_oid_desc);
if (mech == NULL)
return GSS_S_BAD_MECH;
*mech_p = &gss_mskrb_mechanism_oid_desc;
} else {
mech = __gss_get_mechanism(&oid);
if (mech == NULL)
return GSS_S_BAD_MECH;
*mech_p = &mech->mech_type;
}
return GSS_S_COMPLETE;
}