init.c revision 303975
1196239Simp/* 2196239Simp * Copyright (c) 1997 - 2001, 2003, 2006 Kungliga Tekniska H��gskolan 3196239Simp * (Royal Institute of Technology, Stockholm, Sweden). 4196239Simp * All rights reserved. 5196239Simp * 6196239Simp * Redistribution and use in source and binary forms, with or without 7196239Simp * modification, are permitted provided that the following conditions 8196239Simp * are met: 9196239Simp * 10196239Simp * 1. Redistributions of source code must retain the above copyright 11196239Simp * notice, this list of conditions and the following disclaimer. 12196239Simp * 13196239Simp * 2. Redistributions in binary form must reproduce the above copyright 14196239Simp * notice, this list of conditions and the following disclaimer in the 15196239Simp * documentation and/or other materials provided with the distribution. 16196239Simp * 17196239Simp * 3. Neither the name of the Institute nor the names of its contributors 18196239Simp * may be used to endorse or promote products derived from this software 19196239Simp * without specific prior written permission. 20196239Simp * 21196239Simp * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22196239Simp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23196239Simp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24196239Simp * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25196239Simp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26196239Simp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27196239Simp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28196239Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29196239Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30196239Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31196239Simp * SUCH DAMAGE. 32196239Simp */ 33196239Simp 34196239Simp#include "gsskrb5_locl.h" 35196239Simp 36196239Simpstatic HEIMDAL_MUTEX context_mutex = HEIMDAL_MUTEX_INITIALIZER; 37196239Simpstatic int created_key; 38196239Simpstatic HEIMDAL_thread_key context_key; 39196239Simp 40196239Simpstatic void 41196239Simpdestroy_context(void *ptr) 42196239Simp{ 43196239Simp krb5_context context = ptr; 44196239Simp 45196239Simp if (context == NULL) 46197003Simp return; 47196239Simp krb5_free_context(context); 48196239Simp} 49196239Simp 50196239Simpkrb5_error_code 51196239Simp_gsskrb5_init (krb5_context *context) 52196239Simp{ 53196239Simp krb5_error_code ret = 0; 54196239Simp 55196239Simp HEIMDAL_MUTEX_lock(&context_mutex); 56196239Simp 57196239Simp if (!created_key) { 58196239Simp HEIMDAL_key_create(&context_key, destroy_context, ret); 59196239Simp if (ret) { 60196239Simp HEIMDAL_MUTEX_unlock(&context_mutex); 61196239Simp return ret; 62196239Simp } 63196239Simp created_key = 1; 64196239Simp } 65196239Simp HEIMDAL_MUTEX_unlock(&context_mutex); 66196239Simp 67196239Simp *context = HEIMDAL_getspecific(context_key); 68196239Simp if (*context == NULL) { 69196239Simp 70196239Simp ret = krb5_init_context(context); 71196239Simp if (ret == 0) { 72196239Simp HEIMDAL_setspecific(context_key, *context, ret); 73196239Simp if (ret) { 74196239Simp krb5_free_context(*context); 75196239Simp *context = NULL; 76196239Simp } 77196239Simp } 78196239Simp } 79196239Simp 80196239Simp return ret; 81196239Simp} 82196239Simp