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 <stdio.h>
11#include <stdlib.h>
12#include <string.h>
13#include "apps.h"
14#include "progs.h"
15#include <openssl/bio.h>
16#include <openssl/err.h>
17#include <openssl/ssl.h>
18
19typedef enum OPTION_choice {
20    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP
21} OPTION_CHOICE;
22
23const OPTIONS errstr_options[] = {
24    {OPT_HELP_STR, 1, '-', "Usage: %s [options] errnum...\n"},
25    {OPT_HELP_STR, 1, '-', "  errnum  Error number\n"},
26    {"help", OPT_HELP, '-', "Display this summary"},
27    {NULL}
28};
29
30int errstr_main(int argc, char **argv)
31{
32    OPTION_CHOICE o;
33    char buf[256], *prog;
34    int ret = 1;
35    unsigned long l;
36
37    prog = opt_init(argc, argv, errstr_options);
38    while ((o = opt_next()) != OPT_EOF) {
39        switch (o) {
40        case OPT_EOF:
41        case OPT_ERR:
42            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
43            goto end;
44        case OPT_HELP:
45            opt_help(errstr_options);
46            ret = 0;
47            goto end;
48        }
49    }
50
51    ret = 0;
52    for (argv = opt_rest(); *argv; argv++) {
53        if (sscanf(*argv, "%lx", &l) == 0) {
54            ret++;
55        } else {
56            /* We're not really an SSL application so this won't auto-init, but
57             * we're still interested in SSL error strings
58             */
59            OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
60                             | OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
61            ERR_error_string_n(l, buf, sizeof(buf));
62            BIO_printf(bio_out, "%s\n", buf);
63        }
64    }
65 end:
66    return ret;
67}
68