1 /* $OpenBSD: crypto_init.c,v 1.9 2023/06/19 18:32:05 tb 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/conf.h> 24 #ifndef OPENSSL_NO_ENGINE 25 #include <openssl/engine.h> 26 #endif 27 #include <openssl/err.h> 28 #include <openssl/evp.h> 29 #include <openssl/objects.h> 30 31 #include "cryptlib.h" 32 #include "x509_issuer_cache.h" 33 34 int OpenSSL_config(const char *); 35 int OpenSSL_no_config(void); 36 37 static pthread_once_t crypto_init_once = PTHREAD_ONCE_INIT; 38 static pthread_t crypto_init_thread; 39 static int crypto_init_cleaned_up; 40 41 static void 42 OPENSSL_init_crypto_internal(void) 43 { 44 crypto_init_thread = pthread_self(); 45 46 OPENSSL_cpuid_setup(); 47 ERR_load_crypto_strings(); 48 OpenSSL_add_all_ciphers(); 49 OpenSSL_add_all_digests(); 50 } 51 52 int 53 OPENSSL_init_crypto(uint64_t opts, const void *settings) 54 { 55 if (crypto_init_cleaned_up) { 56 CRYPTOerror(ERR_R_INIT_FAIL); 57 return 0; 58 } 59 60 if (pthread_equal(pthread_self(), crypto_init_thread)) 61 return 1; /* don't recurse */ 62 63 if (pthread_once(&crypto_init_once, OPENSSL_init_crypto_internal) != 0) 64 return 0; 65 66 if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) && 67 (OpenSSL_no_config() == 0)) 68 return 0; 69 70 if ((opts & OPENSSL_INIT_LOAD_CONFIG) && 71 (OpenSSL_config(NULL) == 0)) 72 return 0; 73 74 return 1; 75 } 76 77 void 78 OPENSSL_cleanup(void) 79 { 80 /* This currently calls init... */ 81 ERR_free_strings(); 82 83 CRYPTO_cleanup_all_ex_data(); 84 #ifndef OPENSSL_NO_ENGINE 85 ENGINE_cleanup(); 86 #endif 87 EVP_cleanup(); 88 x509_issuer_cache_free(); 89 90 crypto_init_cleaned_up = 1; 91 } 92