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      1 /*	$NetBSD: delete_sec_context.c,v 1.3 2023/06/19 21:41:43 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997 - 2003 Kungliga Tekniska Hgskolan
      5  * (Royal Institute of Technology, Stockholm, Sweden).
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  *
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  *
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * 3. Neither the name of the Institute nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include "gsskrb5_locl.h"
     37 
     38 OM_uint32 GSSAPI_CALLCONV
     39 _gsskrb5_delete_sec_context(OM_uint32 * minor_status,
     40 			    gss_ctx_id_t * context_handle,
     41 			    gss_buffer_t output_token)
     42 {
     43     krb5_context context;
     44     gsskrb5_ctx ctx;
     45 
     46     GSSAPI_KRB5_INIT (&context);
     47 
     48     *minor_status = 0;
     49 
     50     if (output_token) {
     51 	output_token->length = 0;
     52 	output_token->value  = NULL;
     53     }
     54 
     55     if (*context_handle == GSS_C_NO_CONTEXT)
     56 	return GSS_S_COMPLETE;
     57 
     58     ctx = (gsskrb5_ctx) *context_handle;
     59     *context_handle = GSS_C_NO_CONTEXT;
     60 
     61     HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
     62 
     63     krb5_auth_con_free (context, ctx->auth_context);
     64     krb5_auth_con_free (context, ctx->deleg_auth_context);
     65     if (ctx->kcred)
     66 	krb5_free_creds(context, ctx->kcred);
     67     if(ctx->source)
     68 	krb5_free_principal (context, ctx->source);
     69     if(ctx->target)
     70 	krb5_free_principal (context, ctx->target);
     71     if (ctx->ticket)
     72 	krb5_free_ticket (context, ctx->ticket);
     73     if(ctx->order)
     74 	_gssapi_msg_order_destroy(&ctx->order);
     75     if (ctx->service_keyblock)
     76 	krb5_free_keyblock (context, ctx->service_keyblock);
     77     krb5_data_free(&ctx->fwd_data);
     78     if (ctx->crypto)
     79     	krb5_crypto_destroy(context, ctx->crypto);
     80     if (ctx->ccache && (ctx->more_flags & CLOSE_CCACHE))
     81 	krb5_cc_close(context, ctx->ccache);
     82 
     83     HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
     84     HEIMDAL_MUTEX_destroy(&ctx->ctx_id_mutex);
     85     memset(ctx, 0, sizeof(*ctx));
     86     free (ctx);
     87     return GSS_S_COMPLETE;
     88 }
     89