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/* #pragma ident "@(#)g_exp_sec_context.c 1.14 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 for 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_exp_sec_ctx_args(
OM_uint32 *minor_status,
gss_ctx_id_t *context_handle,
gss_buffer_t interprocess_token)
{
/* Initialize outputs. */
if (minor_status != NULL)
*minor_status = 0;
if (interprocess_token != GSS_C_NO_BUFFER) {
interprocess_token->length = 0;
interprocess_token->value = NULL;
}
/* Validate arguments. */
if (minor_status == NULL)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
if (context_handle == NULL || *context_handle == GSS_C_NO_CONTEXT)
return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT);
if (interprocess_token == GSS_C_NO_BUFFER)
return (GSS_S_CALL_INACCESSIBLE_WRITE);
return (GSS_S_COMPLETE);
}
OM_uint32 KRB5_CALLCONV
gss_export_sec_context(minor_status,
context_handle,
interprocess_token)
OM_uint32 * minor_status;
gss_ctx_id_t * context_handle;
gss_buffer_t interprocess_token;
{
OM_uint32 status;
OM_uint32 length;
gss_union_ctx_id_t ctx = NULL;
gss_mechanism mech;
gss_buffer_desc token = GSS_C_EMPTY_BUFFER;
char *buf;
status = val_exp_sec_ctx_args(minor_status,
context_handle, interprocess_token);
if (status != GSS_S_COMPLETE)
return (status);
/*
* select the approprate underlying mechanism routine and
* call it.
*/
ctx = (gss_union_ctx_id_t) *context_handle;
mech = gssint_get_mechanism (ctx->mech_type);
if (!mech)
return GSS_S_BAD_MECH;
if (!mech->gss_export_sec_context)
return (GSS_S_UNAVAILABLE);
status = mech->gss_export_sec_context(minor_status,
&ctx->internal_ctx_id, &token);
if (status != GSS_S_COMPLETE) {
map_error(minor_status, mech);
goto cleanup;
}
length = token.length + 4 + ctx->mech_type->length;
interprocess_token->length = length;
interprocess_token->value = malloc(length);
if (interprocess_token->value == 0) {
*minor_status = ENOMEM;
status = GSS_S_FAILURE;
goto cleanup;
}
buf = interprocess_token->value;
length = ctx->mech_type->length;
buf[3] = (unsigned char) (length & 0xFF);
length >>= 8;
buf[2] = (unsigned char) (length & 0xFF);
length >>= 8;
buf[1] = (unsigned char) (length & 0xFF);
length >>= 8;
buf[0] = (unsigned char) (length & 0xFF);
memcpy(buf+4, ctx->mech_type->elements, (size_t) ctx->mech_type->length);
memcpy(buf+4+ctx->mech_type->length, token.value, token.length);
status = GSS_S_COMPLETE;
cleanup:
(void) gss_release_buffer(minor_status, &token);
if (ctx != NULL && ctx->internal_ctx_id == GSS_C_NO_CONTEXT) {
/* If the mech deleted its context, delete the union context. */
free(ctx->mech_type->elements);
free(ctx->mech_type);
free(ctx);
*context_handle = GSS_C_NO_CONTEXT;
}
return status;
}
#endif /*LEAN_CLIENT */
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