2e732d2ef1
destruction/creation functions for the thread specific storage that the error string handling is using. git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@12493 ec53bebd-3082-4978-b11e-865c3cabbd6b
112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/*
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* Copyright (c) 1997 - 2001, 2003 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "gssapi_locl.h"
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RCSID("$Id$");
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static HEIMDAL_MUTEX gssapi_krb5_context_mutex = HEIMDAL_MUTEX_INITIALIZER;
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static int created_key;
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static HEIMDAL_thread_key gssapi_context_key;
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static void
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gssapi_destroy_thread_context(void *ptr)
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{
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struct gssapi_thr_context *ctx = ptr;
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if (ctx == NULL)
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return;
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if (ctx->error_string)
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free(ctx->error_string);
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HEIMDAL_MUTEX_destroy(&ctx->mutex);
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free(ctx);
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}
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struct gssapi_thr_context *
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gssapi_get_thread_context(int createp)
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{
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struct gssapi_thr_context *ctx;
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int ret;
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HEIMDAL_MUTEX_lock(&gssapi_krb5_context_mutex);
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if (!created_key)
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abort();
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ctx = HEIMDAL_getspecific(gssapi_context_key);
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if (ctx == NULL) {
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if (!createp)
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goto fail;
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ctx = malloc(sizeof(*ctx));
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if (ctx == NULL)
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goto fail;
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ctx->error_string = NULL;
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HEIMDAL_MUTEX_init(&ctx->mutex);
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HEIMDAL_setspecific(gssapi_context_key, ctx, ret);
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if (ret)
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goto fail;
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}
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HEIMDAL_MUTEX_unlock(&gssapi_krb5_context_mutex);
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return ctx;
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fail:
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HEIMDAL_MUTEX_unlock(&gssapi_krb5_context_mutex);
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if (ctx)
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free(ctx);
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return NULL;
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}
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krb5_error_code
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gssapi_krb5_init (void)
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{
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krb5_error_code ret = 0;
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HEIMDAL_MUTEX_lock(&gssapi_krb5_context_mutex);
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if(gssapi_krb5_context == NULL)
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ret = krb5_init_context (&gssapi_krb5_context);
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if (ret == 0 && !created_key) {
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HEIMDAL_key_create(&gssapi_context_key,
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gssapi_destroy_thread_context,
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ret);
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if (ret) {
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krb5_free_context(gssapi_krb5_context);
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gssapi_krb5_context = NULL;
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} else
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created_key = 1;
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}
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HEIMDAL_MUTEX_unlock(&gssapi_krb5_context_mutex);
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return ret;
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}
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