1/*
2 * Copyright (c) 1997 - 2003 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include "gsskrb5_locl.h"
35
36OM_uint32 GSSAPI_CALLCONV
37_gsskrb5_delete_sec_context(OM_uint32 * minor_status,
38			    gss_ctx_id_t * context_handle,
39			    gss_buffer_t output_token)
40{
41    krb5_context context;
42    gsskrb5_ctx ctx;
43
44    GSSAPI_KRB5_INIT (&context);
45
46    *minor_status = 0;
47
48    if (output_token) {
49	output_token->length = 0;
50	output_token->value  = NULL;
51    }
52
53    if (*context_handle == GSS_C_NO_CONTEXT)
54	return GSS_S_COMPLETE;
55
56    ctx = (gsskrb5_ctx) *context_handle;
57    *context_handle = GSS_C_NO_CONTEXT;
58
59    HEIMDAL_MUTEX_lock(&ctx->ctx_id_mutex);
60
61    if (ctx->ccache) {
62	if (ctx->more_flags & CLOSE_CCACHE)
63	    krb5_cc_close(context, ctx->ccache);
64	else if (ctx->more_flags & DESTROY_CCACHE)
65	    krb5_cc_destroy(context, ctx->ccache);
66    }
67
68    krb5_auth_con_free (context, ctx->auth_context);
69    krb5_auth_con_free (context, ctx->deleg_auth_context);
70    if (ctx->kcred)
71	krb5_free_creds(context, ctx->kcred);
72    if(ctx->source)
73	krb5_free_principal (context, ctx->source);
74    if(ctx->target)
75	krb5_free_principal (context, ctx->target);
76    if (ctx->ticket)
77	krb5_free_ticket (context, ctx->ticket);
78    if(ctx->gk5c.order)
79	_gssapi_msg_order_destroy(&ctx->gk5c.order);
80    if (ctx->service_keyblock)
81	krb5_free_keyblock (context, ctx->service_keyblock);
82    krb5_data_free(&ctx->fwd_data);
83    if (ctx->gk5c.crypto)
84    	krb5_crypto_destroy(context, ctx->gk5c.crypto);
85#ifdef PKINIT
86    if (ctx->cert)
87	hx509_cert_free(ctx->cert);
88    if (ctx->gic_opt)
89	krb5_get_init_creds_opt_free(context, ctx->gic_opt);
90#endif
91    if (ctx->asctx)
92	krb5_init_creds_free(context, ctx->asctx);
93    if (ctx->password) {
94	memset(ctx->password, 0, strlen(ctx->password));
95	free(ctx->password);
96    }
97    if (ctx->cookie)
98	krb5_free_data(context, ctx->cookie);
99    if (ctx->iakerbrealm)
100	free(ctx->iakerbrealm);
101    if (ctx->messages)
102	krb5_storage_free(ctx->messages);
103    if (ctx->friendlyname.length)
104	krb5_data_free(&ctx->friendlyname);
105    if (ctx->lkdchostname.length)
106	krb5_data_free(&ctx->lkdchostname);
107
108    HEIMDAL_MUTEX_unlock(&ctx->ctx_id_mutex);
109    HEIMDAL_MUTEX_destroy(&ctx->ctx_id_mutex);
110    memset(ctx, 0, sizeof(*ctx));
111    free (ctx);
112    return GSS_S_COMPLETE;
113}
114