1/*
2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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
26    OPT_SECTION("General"),
27    {"help", OPT_HELP, '-', "Display this summary"},
28
29    OPT_PARAMETERS(),
30    {"errnum", 0, 0, "Error number(s) to decode"},
31    {NULL}
32};
33
34int errstr_main(int argc, char **argv)
35{
36    OPTION_CHOICE o;
37    char buf[256], *prog;
38    int ret = 1;
39    unsigned long l;
40
41    prog = opt_init(argc, argv, errstr_options);
42    while ((o = opt_next()) != OPT_EOF) {
43        switch (o) {
44        case OPT_EOF:
45        case OPT_ERR:
46            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
47            goto end;
48        case OPT_HELP:
49            opt_help(errstr_options);
50            ret = 0;
51            goto end;
52        }
53    }
54
55    /*
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
62    /* All remaining arg are error code. */
63    ret = 0;
64    for (argv = opt_rest(); *argv != NULL; argv++) {
65        if (sscanf(*argv, "%lx", &l) <= 0) {
66            ret++;
67        } else {
68            ERR_error_string_n(l, buf, sizeof(buf));
69            BIO_printf(bio_out, "%s\n", buf);
70        }
71    }
72 end:
73    return ret;
74}
75