1 /* $OpenBSD: crypto_init.c,v 1.21 2024/04/10 14:51:02 beck 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 void 41 OPENSSL_init(void) 42 { 43 } 44 LCRYPTO_ALIAS(OPENSSL_init); 45 46 static void 47 OPENSSL_init_crypto_internal(void) 48 { 49 crypto_init_thread = pthread_self(); 50 51 OPENSSL_cpuid_setup(); 52 ERR_load_crypto_strings(); 53 } 54 55 int 56 OPENSSL_init_crypto(uint64_t opts, const void *settings) 57 { 58 if (crypto_init_cleaned_up) { 59 CRYPTOerror(ERR_R_INIT_FAIL); 60 return 0; 61 } 62 63 if (pthread_equal(pthread_self(), crypto_init_thread)) 64 return 1; /* don't recurse */ 65 66 if (pthread_once(&crypto_init_once, OPENSSL_init_crypto_internal) != 0) 67 return 0; 68 69 if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) && 70 (OpenSSL_no_config() == 0)) 71 return 0; 72 73 if ((opts & OPENSSL_INIT_LOAD_CONFIG) && 74 (OpenSSL_config(NULL) == 0)) 75 return 0; 76 77 return 1; 78 } 79 LCRYPTO_ALIAS(OPENSSL_init_crypto); 80 81 void 82 OPENSSL_cleanup(void) 83 { 84 /* This currently calls init... */ 85 ERR_free_strings(); 86 87 CRYPTO_cleanup_all_ex_data(); 88 EVP_cleanup(); 89 90 X509_VERIFY_PARAM_table_cleanup(); 91 92 x509_issuer_cache_free(); 93 94 crypto_init_cleaned_up = 1; 95 } 96 LCRYPTO_ALIAS(OPENSSL_cleanup); 97 98 void 99 OpenSSL_add_all_ciphers(void) 100 { 101 } 102 LCRYPTO_ALIAS(OpenSSL_add_all_ciphers); 103 104 void 105 OpenSSL_add_all_digests(void) 106 { 107 } 108 LCRYPTO_ALIAS(OpenSSL_add_all_digests); 109 110 void 111 OPENSSL_add_all_algorithms_noconf(void) 112 { 113 } 114 LCRYPTO_ALIAS(OPENSSL_add_all_algorithms_noconf); 115 116 void 117 OPENSSL_add_all_algorithms_conf(void) 118 { 119 OPENSSL_config(NULL); 120 } 121 LCRYPTO_ALIAS(OPENSSL_add_all_algorithms_conf); 122