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/*-
* Copyright (c) 2005 Doug Rabson
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#include <gssapi/gssapi.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "mech_switch.h"
#include "name.h"
#include "cred.h"
#include "context.h"
#include "utils.h"
static gss_cred_id_t
_gss_mech_cred_find(gss_cred_id_t cred_handle, gss_OID mech_type)
{
struct _gss_cred *cred = (struct _gss_cred *)cred_handle;
struct _gss_mechanism_cred *mc;
if (cred == NULL)
return GSS_C_NO_CREDENTIAL;
SLIST_FOREACH(mc, &cred->gc_mc, gmc_link) {
if (gss_oid_equal(mech_type, mc->gmc_mech_oid))
return mc->gmc_cred;
}
return GSS_C_NO_CREDENTIAL;
}
OM_uint32
gss_init_sec_context(OM_uint32 * minor_status,
const gss_cred_id_t initiator_cred_handle,
gss_ctx_id_t * context_handle,
const gss_name_t target_name,
const gss_OID input_mech_type,
OM_uint32 req_flags,
OM_uint32 time_req,
const gss_channel_bindings_t input_chan_bindings,
const gss_buffer_t input_token,
gss_OID * actual_mech_type,
gss_buffer_t output_token,
OM_uint32 * ret_flags,
OM_uint32 * time_rec)
{
OM_uint32 major_status;
struct _gss_mech_switch *m;
struct _gss_name *name = (struct _gss_name *) target_name;
struct _gss_mechanism_name *mn;
struct _gss_context *ctx = (struct _gss_context *) *context_handle;
gss_cred_id_t cred_handle;
int allocated_ctx;
gss_OID mech_type = input_mech_type;
*minor_status = 0;
_gss_buffer_zero(output_token);
if (actual_mech_type)
*actual_mech_type = GSS_C_NO_OID;
if (ret_flags)
*ret_flags = 0;
if (time_rec)
*time_rec = 0;
/*
* If we haven't allocated a context yet, do so now and lookup
* the mechanism switch table. If we have one already, make
* sure we use the same mechanism switch as before.
*/
if (!ctx) {
if (mech_type == GSS_C_NO_OID) {
_gss_load_mech();
if (_gss_mech_oids == GSS_C_NO_OID_SET
|| _gss_mech_oids->count == 0)
return (GSS_S_BAD_MECH);
mech_type = &_gss_mech_oids->elements[0];
}
ctx = malloc(sizeof(struct _gss_context));
if (!ctx) {
*minor_status = ENOMEM;
return (GSS_S_FAILURE);
}
memset(ctx, 0, sizeof(struct _gss_context));
m = ctx->gc_mech = _gss_find_mech_switch(mech_type);
if (!m) {
free(ctx);
return (GSS_S_BAD_MECH);
}
allocated_ctx = 1;
} else {
m = ctx->gc_mech;
mech_type = &ctx->gc_mech->gm_mech_oid;
allocated_ctx = 0;
}
/*
* Find the MN for this mechanism.
*/
major_status = _gss_find_mn(minor_status, name, mech_type, &mn);
if (major_status != GSS_S_COMPLETE) {
if (allocated_ctx)
free(ctx);
return (major_status);
}
/*
* If we have a cred, find the cred for this mechanism.
*/
cred_handle = _gss_mech_cred_find(initiator_cred_handle, mech_type);
major_status = m->gm_init_sec_context(minor_status,
cred_handle,
&ctx->gc_ctx,
mn->gmn_name,
mech_type,
req_flags,
time_req,
input_chan_bindings,
input_token,
actual_mech_type,
output_token,
ret_flags,
time_rec);
if (major_status != GSS_S_COMPLETE
&& major_status != GSS_S_CONTINUE_NEEDED) {
if (allocated_ctx)
free(ctx);
_gss_buffer_zero(output_token);
_gss_mg_error(m, major_status, *minor_status);
} else {
*context_handle = (gss_ctx_id_t) ctx;
}
return (major_status);
}
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