1 /* 2 * Copyright 2002-2023 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <stdio.h> 11 #include <openssl/crypto.h> 12 #include "internal/cryptlib.h" 13 #include "internal/conf.h" 14 #include <openssl/x509.h> 15 #include <openssl/asn1.h> 16 #include <openssl/engine.h> 17 18 #ifdef _WIN32 19 # define strdup _strdup 20 #endif 21 22 /* 23 * This is the automatic configuration loader: it is called automatically by 24 * OpenSSL when any of a number of standard initialisation functions are 25 * called, unless this is overridden by calling OPENSSL_no_config() 26 */ 27 28 static int openssl_configured = 0; 29 30 #if OPENSSL_API_COMPAT < 0x10100000L 31 void OPENSSL_config(const char *appname) 32 { 33 OPENSSL_INIT_SETTINGS settings; 34 35 memset(&settings, 0, sizeof(settings)); 36 if (appname != NULL) 37 settings.appname = strdup(appname); 38 settings.flags = DEFAULT_CONF_MFLAGS; 39 OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, &settings); 40 } 41 #endif 42 43 int openssl_config_int(const OPENSSL_INIT_SETTINGS *settings) 44 { 45 int ret = 0; 46 #if defined(OPENSSL_INIT_DEBUG) || !defined(OPENSSL_SYS_UEFI) 47 const char *filename; 48 const char *appname; 49 unsigned long flags; 50 #endif 51 52 if (openssl_configured) 53 return 1; 54 #if defined(OPENSSL_INIT_DEBUG) || !defined(OPENSSL_SYS_UEFI) 55 filename = settings ? settings->filename : NULL; 56 appname = settings ? settings->appname : NULL; 57 flags = settings ? settings->flags : DEFAULT_CONF_MFLAGS; 58 #endif 59 60 #ifdef OPENSSL_INIT_DEBUG 61 fprintf(stderr, "OPENSSL_INIT: openssl_config_int(%s, %s, %lu)\n", 62 filename, appname, flags); 63 #endif 64 65 OPENSSL_load_builtin_modules(); 66 #ifndef OPENSSL_NO_ENGINE 67 /* Need to load ENGINEs */ 68 ENGINE_load_builtin_engines(); 69 #endif 70 ERR_clear_error(); 71 #ifndef OPENSSL_SYS_UEFI 72 ret = CONF_modules_load_file(filename, appname, flags); 73 #endif 74 openssl_configured = 1; 75 return ret; 76 } 77 78 void openssl_no_config_int(void) 79 { 80 openssl_configured = 1; 81 } 82