init.c revision 178825
1178825Sdfr/* 2178825Sdfr * Copyright (c) 1997 - 2001, 2003, 2006 Kungliga Tekniska H�gskolan 3178825Sdfr * (Royal Institute of Technology, Stockholm, Sweden). 4178825Sdfr * All rights reserved. 5178825Sdfr * 6178825Sdfr * Redistribution and use in source and binary forms, with or without 7178825Sdfr * modification, are permitted provided that the following conditions 8178825Sdfr * are met: 9178825Sdfr * 10178825Sdfr * 1. Redistributions of source code must retain the above copyright 11178825Sdfr * notice, this list of conditions and the following disclaimer. 12178825Sdfr * 13178825Sdfr * 2. Redistributions in binary form must reproduce the above copyright 14178825Sdfr * notice, this list of conditions and the following disclaimer in the 15178825Sdfr * documentation and/or other materials provided with the distribution. 16178825Sdfr * 17178825Sdfr * 3. Neither the name of the Institute nor the names of its contributors 18178825Sdfr * may be used to endorse or promote products derived from this software 19178825Sdfr * without specific prior written permission. 20178825Sdfr * 21178825Sdfr * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22178825Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23178825Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24178825Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25178825Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26178825Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27178825Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28178825Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29178825Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30178825Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31178825Sdfr * SUCH DAMAGE. 32178825Sdfr */ 33178825Sdfr 34178825Sdfr#include "krb5/gsskrb5_locl.h" 35178825Sdfr 36178825SdfrRCSID("$Id: init.c 19031 2006-11-13 18:02:57Z lha $"); 37178825Sdfr 38178825Sdfrstatic HEIMDAL_MUTEX context_mutex = HEIMDAL_MUTEX_INITIALIZER; 39178825Sdfrstatic int created_key; 40178825Sdfrstatic HEIMDAL_thread_key context_key; 41178825Sdfr 42178825Sdfrstatic void 43178825Sdfrdestroy_context(void *ptr) 44178825Sdfr{ 45178825Sdfr krb5_context context = ptr; 46178825Sdfr 47178825Sdfr if (context == NULL) 48178825Sdfr return; 49178825Sdfr krb5_free_context(context); 50178825Sdfr} 51178825Sdfr 52178825Sdfrkrb5_error_code 53178825Sdfr_gsskrb5_init (krb5_context *context) 54178825Sdfr{ 55178825Sdfr krb5_error_code ret = 0; 56178825Sdfr 57178825Sdfr HEIMDAL_MUTEX_lock(&context_mutex); 58178825Sdfr 59178825Sdfr if (!created_key) { 60178825Sdfr HEIMDAL_key_create(&context_key, destroy_context, ret); 61178825Sdfr if (ret) { 62178825Sdfr HEIMDAL_MUTEX_unlock(&context_mutex); 63178825Sdfr return ret; 64178825Sdfr } 65178825Sdfr created_key = 1; 66178825Sdfr } 67178825Sdfr HEIMDAL_MUTEX_unlock(&context_mutex); 68178825Sdfr 69178825Sdfr *context = HEIMDAL_getspecific(context_key); 70178825Sdfr if (*context == NULL) { 71178825Sdfr 72178825Sdfr ret = krb5_init_context(context); 73178825Sdfr if (ret == 0) { 74178825Sdfr HEIMDAL_setspecific(context_key, *context, ret); 75178825Sdfr if (ret) { 76178825Sdfr krb5_free_context(*context); 77178825Sdfr *context = NULL; 78178825Sdfr } 79178825Sdfr } 80178825Sdfr } 81178825Sdfr 82178825Sdfr return ret; 83178825Sdfr} 84