summaryrefslogtreecommitdiffstats
path: root/apps/spkac.c
blob: f384af6eb60b0bbc82fa9886fefb0ba2c73b01e0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
/*
 * Copyright 1999-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "apps.h"
#include "progs.h"
#include <openssl/bio.h>
#include <openssl/conf.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/pem.h>

typedef enum OPTION_choice {
    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
    OPT_NOOUT, OPT_PUBKEY, OPT_VERIFY, OPT_IN, OPT_OUT,
    OPT_ENGINE, OPT_KEY, OPT_CHALLENGE, OPT_PASSIN, OPT_SPKAC,
    OPT_SPKSECT, OPT_KEYFORM
} OPTION_CHOICE;

const OPTIONS spkac_options[] = {
    {"help", OPT_HELP, '-', "Display this summary"},
    {"in", OPT_IN, '<', "Input file"},
    {"out", OPT_OUT, '>', "Output file"},
    {"key", OPT_KEY, '<', "Create SPKAC using private key"},
    {"keyform", OPT_KEYFORM, 'f', "Private key file format - default PEM (PEM, DER, or ENGINE)"},
    {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
    {"challenge", OPT_CHALLENGE, 's', "Challenge string"},
    {"spkac", OPT_SPKAC, 's', "Alternative SPKAC name"},
    {"noout", OPT_NOOUT, '-', "Don't print SPKAC"},
    {"pubkey", OPT_PUBKEY, '-', "Output public key"},
    {"verify", OPT_VERIFY, '-', "Verify SPKAC signature"},
    {"spksect", OPT_SPKSECT, 's',
     "Specify the name of an SPKAC-dedicated section of configuration"},
#ifndef OPENSSL_NO_ENGINE
    {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
#endif
    {NULL}
};

int spkac_main(int argc, char **argv)
{
    BIO *out = NULL;
    CONF *conf = NULL;
    ENGINE *e = NULL;
    EVP_PKEY *pkey = NULL;
    NETSCAPE_SPKI *spki = NULL;
    char *challenge = NULL, *keyfile = NULL;
    char *infile = NULL, *outfile = NULL, *passinarg = NULL, *passin = NULL;
    char *spkstr = NULL, *prog;
    const char *spkac = "SPKAC", *spksect = "default";
    int i, ret = 1, verify = 0, noout = 0, pubkey = 0;
    int keyformat = FORMAT_PEM;
    OPTION_CHOICE o;

    prog = opt_init(argc, argv, spkac_options);
    while ((o = opt_next()) != OPT_EOF) {
        switch (o) {
        case OPT_EOF:
        case OPT_ERR:
 opthelp:
            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
            goto end;
        case OPT_HELP:
            opt_help(spkac_options);
            ret = 0;
            goto end;
        case OPT_IN:
            infile = opt_arg();
            break;
        case OPT_OUT:
            outfile = opt_arg();
            break;
        case OPT_NOOUT:
            noout = 1;
            break;
        case OPT_PUBKEY:
            pubkey = 1;
            break;
        case OPT_VERIFY:
            verify = 1;
            break;
        case OPT_PASSIN:
            passinarg = opt_arg();
            break;
        case OPT_KEY:
            keyfile = opt_arg();
            break;
        case OPT_KEYFORM:
            if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
                goto opthelp;
            break;
        case OPT_CHALLENGE:
            challenge = opt_arg();
            break;
        case OPT_SPKAC:
            spkac = opt_arg();
            break;
        case OPT_SPKSECT:
            spksect = opt_arg();
            break;
        case OPT_ENGINE:
            e = setup_engine(opt_arg(), 0);
            break;
        }
    }
    argc = opt_num_rest();
    if (argc != 0)
        goto opthelp;

    if (!app_passwd(passinarg, NULL, &passin, NULL)) {
        BIO_printf(bio_err, "Error getting password\n");
        goto end;
    }

    if (keyfile != NULL) {
        pkey = load_key(strcmp(keyfile, "-") ? keyfile : NULL,
                        keyformat, 1, passin, e, "private key");
        if (pkey == NULL)
            goto end;
        spki = NETSCAPE_SPKI_new();
        if (spki == NULL)
            goto end;
        if (challenge != NULL)
            ASN1_STRING_set(spki->spkac->challenge,
                            challenge, (int)strlen(challenge));
        NETSCAPE_SPKI_set_pubkey(spki, pkey);
        NETSCAPE_SPKI_sign(spki, pkey, EVP_md5());
        spkstr = NETSCAPE_SPKI_b64_encode(spki);
        if (spkstr == NULL)
            goto end;

        out = bio_open_default(outfile, 'w', FORMAT_TEXT);
        if (out == NULL) {
            OPENSSL_free(spkstr);
            goto end;
        }
        BIO_printf(out, "SPKAC=%s\n", spkstr);
        OPENSSL_free(spkstr);
        ret = 0;
        goto end;
    }

    if ((conf = app_load_config(infile)) == NULL)
        goto end;

    spkstr = NCONF_get_string(conf, spksect, spkac);

    if (spkstr == NULL) {
        BIO_printf(bio_err, "Can't find SPKAC called \"%s\"\n", spkac);
        ERR_print_errors(bio_err);
        goto end;
    }

    spki = NETSCAPE_SPKI_b64_decode(spkstr, -1);

    if (spki == NULL) {
        BIO_printf(bio_err, "Error loading SPKAC\n");
        ERR_print_errors(bio_err);
        goto end;
    }

    out = bio_open_default(outfile, 'w', FORMAT_TEXT);
    if (out == NULL)
        goto end;

    if (!noout)
        NETSCAPE_SPKI_print(out, spki);
    pkey = NETSCAPE_SPKI_get_pubkey(spki);
    if (verify) {
        i = NETSCAPE_SPKI_verify(spki, pkey);
        if (i > 0) {
            BIO_printf(bio_err, "Signature OK\n");
        } else {
            BIO_printf(bio_err, "Signature Failure\n");
            ERR_print_errors(bio_err);
            goto end;
        }
    }
    if (pubkey)
        PEM_write_bio_PUBKEY(out, pkey);

    ret = 0;

 end:
    NCONF_free(conf);
    NETSCAPE_SPKI_free(spki);
    BIO_free_all(out);
    EVP_PKEY_free(pkey);
    release_engine(e);
    OPENSSL_free(passin);
    return ret;
}