Line data    Source code

       1             : /*
       2             :  * Copyright (c) 1997 - 2001, 2003, 2006 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             : 
      36             : static HEIMDAL_MUTEX context_mutex = HEIMDAL_MUTEX_INITIALIZER;
      37             : static int created_key;
      38             : static HEIMDAL_thread_key context_key;
      39             : 
      40             : static void
      41           0 : destroy_context(void *ptr)
      42             : {
      43           0 :     krb5_context context = ptr;
      44             : 
      45           0 :     if (context == NULL)
      46           0 :         return;
      47           0 :     krb5_free_context(context);
      48             : }
      49             : 
      50             : krb5_error_code
      51     3901292 : _gsskrb5_init (krb5_context *context)
      52             : {
      53     3901292 :     krb5_error_code ret = 0;
      54             : 
      55             :     HEIMDAL_MUTEX_lock(&context_mutex);
      56             : 
      57     3901292 :     if (!created_key) {
      58       19358 :         HEIMDAL_key_create(&context_key, destroy_context, ret);
      59       18784 :         if (ret) {
      60             :             HEIMDAL_MUTEX_unlock(&context_mutex);
      61           0 :             return ret;
      62             :         }
      63       19358 :         created_key = 1;
      64             :     }
      65             :     HEIMDAL_MUTEX_unlock(&context_mutex);
      66             : 
      67     3901292 :     *context = HEIMDAL_getspecific(context_key);
      68     3901292 :     if (*context == NULL) {
      69             : 
      70       19358 :         ret = krb5_init_context(context);
      71       19358 :         if (ret == 0) {
      72       19358 :             HEIMDAL_setspecific(context_key, *context, ret);
      73       18784 :             if (ret) {
      74           0 :                 krb5_free_context(*context);
      75           0 :                 *context = NULL;
      76             :             }
      77             :         }
      78             :     }
      79             : 
      80     3867796 :     return ret;
      81             : }