1 /* $OpenBSD: crypto_init.c,v 1.18 2024/01/25 12:22:31 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/asn1.h> 24 #include <openssl/conf.h> 25 #include <openssl/err.h> 26 #include <openssl/evp.h> 27 #include <openssl/objects.h> 28 #include <openssl/x509v3.h> 29 30 #include "cryptlib.h" 31 #include "x509_issuer_cache.h" 32 33 int OpenSSL_config(const char *); 34 int OpenSSL_no_config(void); 35 36 static pthread_once_t crypto_init_once = PTHREAD_ONCE_INIT; 37 static pthread_t crypto_init_thread; 38 static int crypto_init_cleaned_up; 39 40 static void 41 OPENSSL_init_crypto_internal(void) 42 { 43 crypto_init_thread = pthread_self(); 44 45 OPENSSL_cpuid_setup(); 46 ERR_load_crypto_strings(); 47 } 48 49 int 50 OPENSSL_init_crypto(uint64_t opts, const void *settings) 51 { 52 if (crypto_init_cleaned_up) { 53 CRYPTOerror(ERR_R_INIT_FAIL); 54 return 0; 55 } 56 57 if (pthread_equal(pthread_self(), crypto_init_thread)) 58 return 1; /* don't recurse */ 59 60 if (pthread_once(&crypto_init_once, OPENSSL_init_crypto_internal) != 0) 61 return 0; 62 63 if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) && 64 (OpenSSL_no_config() == 0)) 65 return 0; 66 67 if ((opts & OPENSSL_INIT_LOAD_CONFIG) && 68 (OpenSSL_config(NULL) == 0)) 69 return 0; 70 71 return 1; 72 } 73 LCRYPTO_ALIAS(OPENSSL_init_crypto); 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 EVP_cleanup(); 83 84 X509_VERIFY_PARAM_table_cleanup(); 85 86 x509_issuer_cache_free(); 87 88 crypto_init_cleaned_up = 1; 89 } 90 LCRYPTO_ALIAS(OPENSSL_cleanup); 91 92 void 93 OpenSSL_add_all_ciphers(void) 94 { 95 } 96 97 void 98 OpenSSL_add_all_digests(void) 99 { 100 } 101 102 void 103 OPENSSL_add_all_algorithms_noconf(void) 104 { 105 } 106 107 void 108 OPENSSL_add_all_algorithms_conf(void) 109 { 110 OPENSSL_config(NULL); 111 } 112