1 /* $OpenBSD: crypto_init.c,v 1.12 2023/11/19 15:46:09 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 OpenSSL_add_all_ciphers(); 48 OpenSSL_add_all_digests(); 49 } 50 51 int 52 OPENSSL_init_crypto(uint64_t opts, const void *settings) 53 { 54 if (crypto_init_cleaned_up) { 55 CRYPTOerror(ERR_R_INIT_FAIL); 56 return 0; 57 } 58 59 if (pthread_equal(pthread_self(), crypto_init_thread)) 60 return 1; /* don't recurse */ 61 62 if (pthread_once(&crypto_init_once, OPENSSL_init_crypto_internal) != 0) 63 return 0; 64 65 if ((opts & OPENSSL_INIT_NO_LOAD_CONFIG) && 66 (OpenSSL_no_config() == 0)) 67 return 0; 68 69 if ((opts & OPENSSL_INIT_LOAD_CONFIG) && 70 (OpenSSL_config(NULL) == 0)) 71 return 0; 72 73 return 1; 74 } 75 LCRYPTO_ALIAS(OPENSSL_init_crypto); 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 EVP_cleanup(); 85 86 ASN1_STRING_TABLE_cleanup(); 87 X509V3_EXT_cleanup(); 88 X509_PURPOSE_cleanup(); 89 X509_TRUST_cleanup(); 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