usr/src/lib/libgss/g_delete_sec_context.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
  23  */
  24
  25 /*
  26  *  glue routine for gss_delete_sec_context
  27  */
  28
  29 #include <mechglueP.h>
  30 #include "gssapiP_generic.h"
  31 #include <stdio.h>
  32 #ifdef HAVE_STDLIB_H
  33 #include <stdlib.h>
  34 #endif
  35
  36 static OM_uint32
  37 val_del_sec_ctx_args(
  38         OM_uint32 *minor_status,
  39         gss_ctx_id_t *context_handle,
  40         gss_buffer_t output_token)
  41 {
  42
  43         /* Initialize outputs. */
  44
  45         if (minor_status != NULL)
  46                 *minor_status = 0;
  47
  48         if (output_token != GSS_C_NO_BUFFER) {
  49                 output_token->length = 0;
  50                 output_token->value = NULL;
  51         }
  52
  53         /* Validate arguments. */
  54
  55         if (minor_status == NULL)
  56                 return (GSS_S_CALL_INACCESSIBLE_WRITE);
  57
  58         if (context_handle == NULL || *context_handle == GSS_C_NO_CONTEXT)
  59                 return (GSS_S_CALL_INACCESSIBLE_WRITE | GSS_S_NO_CONTEXT);
  60
  61         return (GSS_S_COMPLETE);
  62 }
  63
  64 OM_uint32
  65 gss_delete_sec_context(minor_status,
  66                                 context_handle,
  67                                 output_token)
  68
  69 OM_uint32 *                     minor_status;
  70 gss_ctx_id_t *                  context_handle;
  71 gss_buffer_t                    output_token;
  72
  73 {
  74         OM_uint32               status;
  75         gss_union_ctx_id_t      ctx;
  76
  77         status = val_del_sec_ctx_args(minor_status,
  78                                 context_handle,
  79                                 output_token);
  80         if (status != GSS_S_COMPLETE)
  81                 return (status);
  82
  83         /*
  84          * select the approprate underlying mechanism routine and
  85          * call it.
  86          */
  87
  88         ctx = (gss_union_ctx_id_t) *context_handle;
  89         if (GSSINT_CHK_LOOP(ctx))
  90                 return (GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT);
  91
  92         status = gssint_delete_internal_sec_context(minor_status,
  93                                                     ctx->mech_type,
  94                                                     &ctx->internal_ctx_id,
  95                                                     output_token);
  96         if (status)
  97                 return status;
  98
  99         /* now free up the space for the union context structure */
 100         free(ctx->mech_type->elements);
 101         free(ctx->mech_type);
 102         free(*context_handle);
 103         *context_handle = GSS_C_NO_CONTEXT;
 104
 105         return (GSS_S_COMPLETE);
 106 }