g_accept_sec_context.c revision a6d402a05cacff19c90312f907f076a1cf67870e
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* glue routine for gss_accept_sec_context
*/
#include <mechglueP.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <string.h>
#include <errno.h>
OM_uint32
gss_accept_sec_context(minor_status,
context_handle,
verifier_cred_handle,
input_token_buffer,
input_chan_bindings,
src_name,
mech_type,
output_token,
ret_flags,
time_rec,
d_cred)
OM_uint32 *minor_status;
gss_ctx_id_t *context_handle;
const gss_cred_id_t verifier_cred_handle;
const gss_buffer_t input_token_buffer;
const gss_channel_bindings_t input_chan_bindings;
gss_name_t *src_name;
gss_OID *mech_type;
gss_buffer_t output_token;
OM_uint32 *ret_flags;
OM_uint32 *time_rec;
gss_cred_id_t *d_cred; /* delegated cred handle */
{
OM_uint32 status, temp_status, t_minstat;
gss_union_ctx_id_t union_ctx_id;
gss_union_cred_t union_cred;
gss_cred_id_t input_cred_handle = GSS_C_NO_CREDENTIAL;
gss_cred_id_t tmp_d_cred = GSS_C_NO_CREDENTIAL;
gss_name_t internal_name = GSS_C_NO_NAME;
gss_name_t tmp_src_name = GSS_C_NO_NAME;
gss_OID_desc token_mech_type_desc;
gss_OID token_mech_type = &token_mech_type_desc;
gss_OID actual_mech = GSS_C_NO_OID;
OM_uint32 flags;
gss_mechanism mech;
/* check parameters first */
if (minor_status == NULL)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
*minor_status = 0;
if (context_handle == NULL || output_token == NULL)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
/* clear optional fields */
output_token->value = NULL;
output_token->length = 0;
if (src_name)
*src_name = NULL;
if (mech_type)
*mech_type = NULL;
if (d_cred)
*d_cred = NULL;
/*
* if context_handle is GSS_C_NO_CONTEXT, allocate a union context
* descriptor to hold the mech type information as well as the
* underlying mechanism context handle. Otherwise, cast the
* value of *context_handle to the union context variable.
*/
if (*context_handle == GSS_C_NO_CONTEXT) {
if (GSS_EMPTY_BUFFER(input_token_buffer))
return (GSS_S_CALL_INACCESSIBLE_READ);
/* Get the token mech type */
status = __gss_get_mech_type(token_mech_type,
input_token_buffer);
if (status)
return (status);
status = GSS_S_FAILURE;
union_ctx_id = (gss_union_ctx_id_t)
malloc(sizeof (gss_union_ctx_id_desc));
if (!union_ctx_id)
return (GSS_S_FAILURE);
union_ctx_id->internal_ctx_id = GSS_C_NO_CONTEXT;
status = generic_gss_copy_oid(&t_minstat,
token_mech_type,
&union_ctx_id->mech_type);
if (status != GSS_S_COMPLETE) {
free(union_ctx_id);
return (status);
}
/* set the new context handle to caller's data */
*context_handle = (gss_ctx_id_t)union_ctx_id;
} else {
union_ctx_id = (gss_union_ctx_id_t)*context_handle;
token_mech_type = union_ctx_id->mech_type;
}
/*
* get the appropriate cred handle from the union cred struct.
* defaults to GSS_C_NO_CREDENTIAL if there is no cred, which will
* use the default credential.
*/
union_cred = (gss_union_cred_t)verifier_cred_handle;
input_cred_handle = __gss_get_mechanism_cred(union_cred,
token_mech_type);
/*
* now select the approprate underlying mechanism routine and
* call it.
*/
mech = __gss_get_mechanism(token_mech_type);
if (mech && mech->gss_accept_sec_context) {
status = mech->gss_accept_sec_context(
mech->context,
minor_status,
&union_ctx_id->internal_ctx_id,
input_cred_handle,
input_token_buffer,
input_chan_bindings,
&internal_name,
&actual_mech,
output_token,
&flags,
time_rec,
d_cred ? &tmp_d_cred : NULL);
/* If there's more work to do, keep going... */
if (status == GSS_S_CONTINUE_NEEDED)
return (GSS_S_CONTINUE_NEEDED);
/* if the call failed, return with failure */
if (status != GSS_S_COMPLETE)
goto error_out;
if (mech_type != NULL)
*mech_type = actual_mech;
/*
* if src_name is non-NULL,
* convert internal_name into a union name equivalent
* First call the mechanism specific display_name()
* then call gss_import_name() to create
* the union name struct cast to src_name
*/
if (internal_name != NULL) {
temp_status = __gss_convert_name_to_union_name(
&t_minstat, mech,
internal_name, &tmp_src_name);
if (temp_status != GSS_S_COMPLETE) {
*minor_status = t_minstat;
if (output_token->length)
(void) gss_release_buffer(
&t_minstat,
output_token);
if (internal_name != GSS_C_NO_NAME)
mech->gss_release_name(
mech->context,
&t_minstat,
&internal_name);
return (temp_status);
}
if (src_name != NULL) {
*src_name = tmp_src_name;
}
} else if (src_name != NULL) {
*src_name = GSS_C_NO_NAME;
}
/* Ensure we're returning correct creds format */
if ((flags & GSS_C_DELEG_FLAG) &&
tmp_d_cred != GSS_C_NO_CREDENTIAL) {
/*
* If we got back an OID different from the original
* token OID, assume the delegated_cred is already
* a proper union_cred and just return it. Don't
* try to re-wrap it. This is for SPNEGO or other
* pseudo-mechanisms.
*/
if (actual_mech != GSS_C_NO_OID &&
token_mech_type != GSS_C_NO_OID &&
!g_OID_equal(actual_mech, token_mech_type)) {
*d_cred = tmp_d_cred;
} else {
gss_union_cred_t d_u_cred = NULL;
d_u_cred = malloc(sizeof (gss_union_cred_desc));
if (d_u_cred == NULL) {
status = GSS_S_FAILURE;
goto error_out;
}
(void) memset(d_u_cred, 0,
sizeof (gss_union_cred_desc));
d_u_cred->count = 1;
status = generic_gss_copy_oid(
&t_minstat,
actual_mech,
&d_u_cred->mechs_array);
if (status != GSS_S_COMPLETE) {
free(d_u_cred);
goto error_out;
}
d_u_cred->cred_array = malloc(
sizeof (gss_cred_id_t));
if (d_u_cred->cred_array != NULL) {
d_u_cred->cred_array[0] = tmp_d_cred;
} else {
free(d_u_cred);
status = GSS_S_FAILURE;
goto error_out;
}
if (status != GSS_S_COMPLETE) {
free(d_u_cred->cred_array);
free(d_u_cred);
goto error_out;
}
internal_name = GSS_C_NO_NAME;
d_u_cred->auxinfo.creation_time = time(0);
d_u_cred->auxinfo.time_rec = 0;
if (mech->gss_inquire_cred) {
status = mech->gss_inquire_cred(
mech->context,
minor_status,
tmp_d_cred,
&internal_name,
&d_u_cred->auxinfo.time_rec,
&d_u_cred->auxinfo.cred_usage,
NULL);
}
if (internal_name != NULL) {
temp_status =
__gss_convert_name_to_union_name(
&t_minstat, mech,
internal_name, &tmp_src_name);
if (temp_status != GSS_S_COMPLETE) {
*minor_status = t_minstat;
if (output_token->length)
(void) gss_release_buffer(
&t_minstat,
output_token);
free(d_u_cred->cred_array);
free(d_u_cred);
return (temp_status);
}
}
if (tmp_src_name != NULL) {
status = gss_display_name(
&t_minstat,
tmp_src_name,
&d_u_cred->auxinfo.name,
&d_u_cred->auxinfo.name_type);
}
*d_cred = (gss_cred_id_t)d_u_cred;
}
}
if (ret_flags != NULL) {
*ret_flags = flags;
}
if (src_name == NULL && tmp_src_name != NULL)
(void) gss_release_name(&t_minstat,
&tmp_src_name);
return (status);
} else {
status = GSS_S_BAD_MECH;
}
error_out:
if (union_ctx_id) {
if (union_ctx_id->mech_type) {
if (union_ctx_id->mech_type->elements)
free(union_ctx_id->mech_type->elements);
free(union_ctx_id->mech_type);
}
free(union_ctx_id);
*context_handle = GSS_C_NO_CONTEXT;
}
if (output_token->length)
(void) gss_release_buffer(&t_minstat, output_token);
if (src_name)
*src_name = GSS_C_NO_NAME;
if (tmp_src_name != GSS_C_NO_NAME)
(void) gss_release_buffer(&t_minstat,
(gss_buffer_t)tmp_src_name);
return (status);
}