1/*
2 * Copyright 1999-2018 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 <string.h>
12#include "apps.h"
13#include "progs.h"
14#include <openssl/pem.h>
15#include <openssl/err.h>
16
17typedef enum OPTION_choice {
18    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
19    OPT_TOSEQ, OPT_IN, OPT_OUT
20} OPTION_CHOICE;
21
22const OPTIONS nseq_options[] = {
23    {"help", OPT_HELP, '-', "Display this summary"},
24    {"toseq", OPT_TOSEQ, '-', "Output NS Sequence file"},
25    {"in", OPT_IN, '<', "Input file"},
26    {"out", OPT_OUT, '>', "Output file"},
27    {NULL}
28};
29
30int nseq_main(int argc, char **argv)
31{
32    BIO *in = NULL, *out = NULL;
33    X509 *x509 = NULL;
34    NETSCAPE_CERT_SEQUENCE *seq = NULL;
35    OPTION_CHOICE o;
36    int toseq = 0, ret = 1, i;
37    char *infile = NULL, *outfile = NULL, *prog;
38
39    prog = opt_init(argc, argv, nseq_options);
40    while ((o = opt_next()) != OPT_EOF) {
41        switch (o) {
42        case OPT_EOF:
43        case OPT_ERR:
44 opthelp:
45            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
46            goto end;
47        case OPT_HELP:
48            ret = 0;
49            opt_help(nseq_options);
50            goto end;
51        case OPT_TOSEQ:
52            toseq = 1;
53            break;
54        case OPT_IN:
55            infile = opt_arg();
56            break;
57        case OPT_OUT:
58            outfile = opt_arg();
59            break;
60        }
61    }
62    argc = opt_num_rest();
63    if (argc != 0)
64        goto opthelp;
65
66    in = bio_open_default(infile, 'r', FORMAT_PEM);
67    if (in == NULL)
68        goto end;
69    out = bio_open_default(outfile, 'w', FORMAT_PEM);
70    if (out == NULL)
71        goto end;
72
73    if (toseq) {
74        seq = NETSCAPE_CERT_SEQUENCE_new();
75        if (seq == NULL)
76            goto end;
77        seq->certs = sk_X509_new_null();
78        if (seq->certs == NULL)
79            goto end;
80        while ((x509 = PEM_read_bio_X509(in, NULL, NULL, NULL)))
81            sk_X509_push(seq->certs, x509);
82
83        if (!sk_X509_num(seq->certs)) {
84            BIO_printf(bio_err, "%s: Error reading certs file %s\n",
85                       prog, infile);
86            ERR_print_errors(bio_err);
87            goto end;
88        }
89        PEM_write_bio_NETSCAPE_CERT_SEQUENCE(out, seq);
90        ret = 0;
91        goto end;
92    }
93
94    seq = PEM_read_bio_NETSCAPE_CERT_SEQUENCE(in, NULL, NULL, NULL);
95    if (seq == NULL) {
96        BIO_printf(bio_err, "%s: Error reading sequence file %s\n",
97                   prog, infile);
98        ERR_print_errors(bio_err);
99        goto end;
100    }
101
102    for (i = 0; i < sk_X509_num(seq->certs); i++) {
103        x509 = sk_X509_value(seq->certs, i);
104        dump_cert_text(out, x509);
105        PEM_write_bio_X509(out, x509);
106    }
107    ret = 0;
108 end:
109    BIO_free(in);
110    BIO_free_all(out);
111    NETSCAPE_CERT_SEQUENCE_free(seq);
112
113    return ret;
114}
115