| 1 | /*
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| 2 | * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | *
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| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
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| 5 | * this file except in compliance with the License. You can obtain a copy
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| 6 | * in the file LICENSE in the source distribution or at
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| 7 | * https://www.openssl.org/source/license.html
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| 8 | */
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| 9 |
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| 10 | #include "apps.h"
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| 11 | #include <openssl/bio.h>
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| 12 | #include <openssl/err.h>
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| 13 | #include <openssl/rand.h>
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| 14 | #include <openssl/conf.h>
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| 15 |
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| 16 | static char *save_rand_file;
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| 17 |
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| 18 | void app_RAND_load_conf(CONF *c, const char *section)
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| 19 | {
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| 20 | const char *randfile = NCONF_get_string(c, section, "RANDFILE");
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| 21 |
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| 22 | if (randfile == NULL) {
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| 23 | ERR_clear_error();
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| 24 | return;
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| 25 | }
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| 26 | if (RAND_load_file(randfile, -1) < 0) {
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| 27 | BIO_printf(bio_err, "Can't load %s into RNG\n", randfile);
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| 28 | ERR_print_errors(bio_err);
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| 29 | }
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| 30 | if (save_rand_file == NULL)
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| 31 | save_rand_file = OPENSSL_strdup(randfile);
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| 32 | }
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| 33 |
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| 34 | static int loadfiles(char *name)
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| 35 | {
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| 36 | char *p;
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| 37 | int last, ret = 1;
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| 38 |
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| 39 | for ( ; ; ) {
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| 40 | last = 0;
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| 41 | for (p = name; *p != '\0' && *p != LIST_SEPARATOR_CHAR; p++)
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| 42 | continue;
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| 43 | if (*p == '\0')
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| 44 | last = 1;
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| 45 | *p = '\0';
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| 46 | if (RAND_load_file(name, -1) < 0) {
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| 47 | BIO_printf(bio_err, "Can't load %s into RNG\n", name);
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| 48 | ERR_print_errors(bio_err);
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| 49 | ret = 0;
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| 50 | }
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| 51 | if (last)
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| 52 | break;
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| 53 | name = p + 1;
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| 54 | if (*name == '\0')
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| 55 | break;
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| 56 | }
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| 57 | return ret;
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| 58 | }
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| 59 |
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| 60 | void app_RAND_write(void)
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| 61 | {
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| 62 | if (save_rand_file == NULL)
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| 63 | return;
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| 64 | if (RAND_write_file(save_rand_file) == -1) {
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| 65 | BIO_printf(bio_err, "Cannot write random bytes:\n");
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| 66 | ERR_print_errors(bio_err);
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| 67 | }
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| 68 | OPENSSL_free(save_rand_file);
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| 69 | save_rand_file = NULL;
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| 70 | }
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| 71 |
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| 72 |
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| 73 | /*
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| 74 | * See comments in opt_verify for explanation of this.
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| 75 | */
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| 76 | enum r_range { OPT_R_ENUM };
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| 77 |
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| 78 | int opt_rand(int opt)
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| 79 | {
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| 80 | switch ((enum r_range)opt) {
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| 81 | case OPT_R__FIRST:
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| 82 | case OPT_R__LAST:
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| 83 | break;
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| 84 | case OPT_R_RAND:
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| 85 | return loadfiles(opt_arg());
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| 86 | break;
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| 87 | case OPT_R_WRITERAND:
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| 88 | OPENSSL_free(save_rand_file);
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| 89 | save_rand_file = OPENSSL_strdup(opt_arg());
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| 90 | break;
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| 91 | }
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| 92 | return 1;
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| 93 | }
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