1 /* $OpenBSD: crypto_init.c,v 1.8 2023/05/08 13:53:26 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 #include <openssl/engine.h> 25 #include <openssl/err.h> 26 #include <openssl/evp.h> 27 #include <openssl/objects.h> 28 29 #include "cryptlib.h" 30 #include "x509_issuer_cache.h" 31 32 int OpenSSL_config(const char *); 33 int OpenSSL_no_config(void); 34 35 static pthread_once_t crypto_init_once = PTHREAD_ONCE_INIT; 36 static pthread_t crypto_init_thread; 37 static int crypto_init_cleaned_up; 38 39 static void 40 OPENSSL_init_crypto_internal(void) 41 { 42 crypto_init_thread = pthread_self(); 43 44 OPENSSL_cpuid_setup(); 45 ERR_load_crypto_strings(); 46 OpenSSL_add_all_ciphers(); 47 OpenSSL_add_all_digests(); 48 } 49 50 int 51 OPENSSL_init_crypto(uint64_t opts, const void *settings) 52 { 53 if (crypto_init_cleaned_up) { 54 CRYPTOerror(ERR_R_INIT_FAIL); 55 return 0; 56 } 57 58 if (pthread_equal(pthread_self(), crypto_init_thread)) 59 return 1; /* don't recurse */ 60 61 if (pthread_once(&crypto_init_once, OPENSSL_init_crypto_internal) != 0) 62 return 0; 63 64 if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) && 65 (OpenSSL_no_config() == 0)) 66 return 0; 67 68 if ((opts & OPENSSL_INIT_LOAD_CONFIG) && 69 (OpenSSL_config(NULL) == 0)) 70 return 0; 71 72 return 1; 73 } 74 75 void 76 OPENSSL_cleanup(void) 77 { 78 /* This currently calls init... */ 79 ERR_free_strings(); 80 81 CRYPTO_cleanup_all_ex_data(); 82 ENGINE_cleanup(); 83 EVP_cleanup(); 84 x509_issuer_cache_free(); 85 86 crypto_init_cleaned_up = 1; 87 } 88