/* #pragma ident "@(#)g_imp_sec_context.c 1.18 04/02/23 SMI" */
/*
* Copyright 1996 by Sun Microsystems, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appears in all copies and
* that both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of Sun Microsystems not be used
* in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. Sun Microsystems makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
* glue routine gss_export_sec_context
*/
#ifndef LEAN_CLIENT
#include "mglueP.h"
#include <stdio.h>
#include <errno.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include <string.h>
static OM_uint32
val_imp_sec_ctx_args(
OM_uint32 *minor_status,
gss_buffer_t interprocess_token,
gss_ctx_id_t *context_handle)
{
/* Initialize outputs. */
if (minor_status != NULL)
*minor_status = 0;
if (context_handle != NULL)
*context_handle = GSS_C_NO_CONTEXT;
/* Validate arguments. */
if (minor_status == NULL)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
if (context_handle == NULL)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
if (interprocess_token == GSS_C_NO_BUFFER)
return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_DEFECTIVE_TOKEN);
if (GSS_EMPTY_BUFFER(interprocess_token))
return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_DEFECTIVE_TOKEN);
return (GSS_S_COMPLETE);
}
OM_uint32 KRB5_CALLCONV
gss_import_sec_context(minor_status,
interprocess_token,
context_handle)
OM_uint32 * minor_status;
gss_buffer_t interprocess_token;
gss_ctx_id_t * context_handle;
{
OM_uint32 length = 0;
OM_uint32 status;
char *p;
gss_union_ctx_id_t ctx;
gss_ctx_id_t mctx;
gss_buffer_desc token;
gss_OID_desc token_mech;
gss_OID selected_mech = GSS_C_NO_OID;
gss_OID public_mech;
gss_mechanism mech;
status = val_imp_sec_ctx_args(minor_status,
interprocess_token, context_handle);
if (status != GSS_S_COMPLETE)
return (status);
/* Initial value needed below. */
status = GSS_S_FAILURE;
if (interprocess_token->length >= sizeof (OM_uint32)) {
p = interprocess_token->value;
length = (OM_uint32)*p++;
length = (OM_uint32)(length << 8) + *p++;
length = (OM_uint32)(length << 8) + *p++;
length = (OM_uint32)(length << 8) + *p++;
}
if (length == 0 ||
length > (interprocess_token->length - sizeof (OM_uint32))) {
return (GSS_S_CALL_BAD_STRUCTURE | GSS_S_DEFECTIVE_TOKEN);
}
token_mech.length = length;
token_mech.elements = p;
p += length;
token.length = interprocess_token->length - sizeof (OM_uint32) - length;
token.value = p;
/*
* select the approprate underlying mechanism routine and
* call it.
*/
status = gssint_select_mech_type(minor_status, &token_mech,
&selected_mech);
if (status != GSS_S_COMPLETE)
return status;
mech = gssint_get_mechanism(selected_mech);
if (!mech)
return GSS_S_BAD_MECH;
if (!mech->gssspi_import_sec_context_by_mech &&
!mech->gss_import_sec_context)
return GSS_S_UNAVAILABLE;
status = gssint_create_union_context(minor_status, selected_mech, &ctx);
if (status != GSS_S_COMPLETE)
return status;
if (mech->gssspi_import_sec_context_by_mech) {
public_mech = gssint_get_public_oid(selected_mech);
status = mech->gssspi_import_sec_context_by_mech(minor_status,
public_mech,
&token, &mctx);
} else {
status = mech->gss_import_sec_context(minor_status, &token, &mctx);
}
if (status == GSS_S_COMPLETE) {
ctx->internal_ctx_id = mctx;
*context_handle = (gss_ctx_id_t)ctx;
return (GSS_S_COMPLETE);
}
map_error(minor_status, mech);
free(ctx->mech_type->elements);
free(ctx->mech_type);
free(ctx);
return status;
}
#endif /* LEAN_CLIENT */