1 /* $OpenBSD: ssl_init.c,v 1.2 2018/03/30 14:59:46 jsing Exp $ */ 2 /* 3 * Copyright (c) 2018 Bob Beck <beck@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 /* OpenSSL style init */ 19 20 #include <pthread.h> 21 #include <stdio.h> 22 23 #include <openssl/objects.h> 24 25 #include "ssl_locl.h" 26 27 static pthread_t ssl_init_thread; 28 29 static void 30 OPENSSL_init_ssl_internal(void) 31 { 32 ssl_init_thread = pthread_self(); 33 SSL_load_error_strings(); 34 SSL_library_init(); 35 } 36 37 int 38 OPENSSL_init_ssl(uint64_t opts, const void *settings) 39 { 40 static pthread_once_t once = PTHREAD_ONCE_INIT; 41 42 if (pthread_equal(pthread_self(), ssl_init_thread)) 43 return 1; /* don't recurse */ 44 45 OPENSSL_init_crypto(opts, settings); 46 47 if (pthread_once(&once, OPENSSL_init_ssl_internal) != 0) 48 return 0; 49 50 return 1; 51 } 52