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/*
* Copyright (c) 1997 - 2001, 2003 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "gssapi_locl.h"
RCSID("$Id: init.c,v 1.7 2003/07/22 19:50:11 lha Exp $");
static HEIMDAL_MUTEX gssapi_krb5_context_mutex = HEIMDAL_MUTEX_INITIALIZER;
static int created_key;
static HEIMDAL_thread_key gssapi_context_key;
static void
gssapi_destroy_thread_context(void *ptr)
{
struct gssapi_thr_context *ctx = ptr;
if (ctx == NULL)
return;
if (ctx->error_string)
free(ctx->error_string);
HEIMDAL_MUTEX_destroy(&ctx->mutex);
free(ctx);
}
struct gssapi_thr_context *
gssapi_get_thread_context(int createp)
{
struct gssapi_thr_context *ctx;
int ret;
HEIMDAL_MUTEX_lock(&gssapi_krb5_context_mutex);
if (!created_key)
abort();
ctx = HEIMDAL_getspecific(gssapi_context_key);
if (ctx == NULL) {
if (!createp)
goto fail;
ctx = malloc(sizeof(*ctx));
if (ctx == NULL)
goto fail;
ctx->error_string = NULL;
HEIMDAL_MUTEX_init(&ctx->mutex);
HEIMDAL_setspecific(gssapi_context_key, ctx, ret);
if (ret)
goto fail;
}
HEIMDAL_MUTEX_unlock(&gssapi_krb5_context_mutex);
return ctx;
fail:
HEIMDAL_MUTEX_unlock(&gssapi_krb5_context_mutex);
if (ctx)
free(ctx);
return NULL;
}
krb5_error_code
gssapi_krb5_init (void)
{
krb5_error_code ret = 0;
HEIMDAL_MUTEX_lock(&gssapi_krb5_context_mutex);
if(gssapi_krb5_context == NULL)
ret = krb5_init_context (&gssapi_krb5_context);
if (ret == 0 && !created_key) {
HEIMDAL_key_create(&gssapi_context_key,
gssapi_destroy_thread_context,
ret);
if (ret) {
krb5_free_context(gssapi_krb5_context);
gssapi_krb5_context = NULL;
} else
created_key = 1;
}
HEIMDAL_MUTEX_unlock(&gssapi_krb5_context_mutex);
return ret;
}
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