1/* 2 * Copyright 1995-2018 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 "apps.h" 11#include <openssl/bio.h> 12#include <openssl/err.h> 13#include <openssl/rand.h> 14#include <openssl/conf.h> 15 16static char *save_rand_file; 17 18void app_RAND_load_conf(CONF *c, const char *section) 19{ 20 const char *randfile = NCONF_get_string(c, section, "RANDFILE"); 21 22 if (randfile == NULL) { 23 ERR_clear_error(); 24 return; 25 } 26 if (RAND_load_file(randfile, -1) < 0) { 27 BIO_printf(bio_err, "Can't load %s into RNG\n", randfile); 28 ERR_print_errors(bio_err); 29 } 30 if (save_rand_file == NULL) 31 save_rand_file = OPENSSL_strdup(randfile); 32} 33 34static int loadfiles(char *name) 35{ 36 char *p; 37 int last, ret = 1; 38 39 for ( ; ; ) { 40 last = 0; 41 for (p = name; *p != '\0' && *p != LIST_SEPARATOR_CHAR; p++) 42 continue; 43 if (*p == '\0') 44 last = 1; 45 *p = '\0'; 46 if (RAND_load_file(name, -1) < 0) { 47 BIO_printf(bio_err, "Can't load %s into RNG\n", name); 48 ERR_print_errors(bio_err); 49 ret = 0; 50 } 51 if (last) 52 break; 53 name = p + 1; 54 if (*name == '\0') 55 break; 56 } 57 return ret; 58} 59 60void app_RAND_write(void) 61{ 62 if (save_rand_file == NULL) 63 return; 64 if (RAND_write_file(save_rand_file) == -1) { 65 BIO_printf(bio_err, "Cannot write random bytes:\n"); 66 ERR_print_errors(bio_err); 67 } 68 OPENSSL_free(save_rand_file); 69 save_rand_file = NULL; 70} 71 72 73/* 74 * See comments in opt_verify for explanation of this. 75 */ 76enum r_range { OPT_R_ENUM }; 77 78int opt_rand(int opt) 79{ 80 switch ((enum r_range)opt) { 81 case OPT_R__FIRST: 82 case OPT_R__LAST: 83 break; 84 case OPT_R_RAND: 85 return loadfiles(opt_arg()); 86 break; 87 case OPT_R_WRITERAND: 88 OPENSSL_free(save_rand_file); 89 save_rand_file = OPENSSL_strdup(opt_arg()); 90 break; 91 } 92 return 1; 93} 94