Coverage Report

Created: 2025-03-01 02:43

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/libfido2/src/authkey.c
Line
Count
Source
1
/*
2
 * Copyright (c) 2018-2022 Yubico AB. All rights reserved.
3
 * Use of this source code is governed by a BSD-style
4
 * license that can be found in the LICENSE file.
5
 * SPDX-License-Identifier: BSD-2-Clause
6
 */
7
8
#include "fido.h"
9
10
static int
11
parse_authkey(const cbor_item_t *key, const cbor_item_t *val, void *arg)
12
31.6k
{
13
31.6k
        es256_pk_t *authkey = arg;
14
15
31.6k
        if (cbor_isa_uint(key) == false ||
16
31.6k
            cbor_int_get_width(key) != CBOR_INT_8 ||
17
31.6k
            cbor_get_uint8(key) != 1) {
18
2.87k
                fido_log_debug("%s: cbor type", __func__);
19
2.87k
                return (0); /* ignore */
20
2.87k
        }
21
22
28.7k
        return (es256_pk_decode(val, authkey));
23
31.6k
}
24
25
static int
26
fido_dev_authkey_tx(fido_dev_t *dev, int *ms)
27
102k
{
28
102k
        fido_blob_t      f;
29
102k
        cbor_item_t     *argv[2];
30
102k
        int              r;
31
32
102k
        fido_log_debug("%s: dev=%p", __func__, (void *)dev);
33
34
102k
        memset(&f, 0, sizeof(f));
35
102k
        memset(argv, 0, sizeof(argv));
36
37
        /* add command parameters */
38
102k
        if ((argv[0] = cbor_encode_pin_opt(dev)) == NULL ||
39
102k
            (argv[1] = cbor_build_uint8(2)) == NULL) {
40
41.6k
                fido_log_debug("%s: cbor_build", __func__);
41
41.6k
                r = FIDO_ERR_INTERNAL;
42
41.6k
                goto fail;
43
41.6k
        }
44
45
        /* frame and transmit */
46
60.7k
        if (cbor_build_frame(CTAP_CBOR_CLIENT_PIN, argv, nitems(argv),
47
60.7k
            &f) < 0 || fido_tx(dev, CTAP_CMD_CBOR, f.ptr, f.len, ms) < 0) {
48
679
                fido_log_debug("%s: fido_tx", __func__);
49
679
                r = FIDO_ERR_TX;
50
679
                goto fail;
51
679
        }
52
53
60.0k
        r = FIDO_OK;
54
102k
fail:
55
102k
        cbor_vector_free(argv, nitems(argv));
56
102k
        free(f.ptr);
57
58
102k
        return (r);
59
60.0k
}
60
61
static int
62
fido_dev_authkey_rx(fido_dev_t *dev, es256_pk_t *authkey, int *ms)
63
60.0k
{
64
60.0k
        unsigned char   *msg;
65
60.0k
        int              msglen;
66
60.0k
        int              r;
67
68
60.0k
        fido_log_debug("%s: dev=%p, authkey=%p, ms=%d", __func__, (void *)dev,
69
60.0k
            (void *)authkey, *ms);
70
71
60.0k
        memset(authkey, 0, sizeof(*authkey));
72
73
60.0k
        if ((msg = malloc(FIDO_MAXMSG)) == NULL) {
74
173
                r = FIDO_ERR_INTERNAL;
75
173
                goto out;
76
173
        }
77
78
59.9k
        if ((msglen = fido_rx(dev, CTAP_CMD_CBOR, msg, FIDO_MAXMSG, ms)) < 0) {
79
28.1k
                fido_log_debug("%s: fido_rx", __func__);
80
28.1k
                r = FIDO_ERR_RX;
81
28.1k
                goto out;
82
28.1k
        }
83
84
31.7k
        r = cbor_parse_reply(msg, (size_t)msglen, authkey, parse_authkey);
85
60.0k
out:
86
60.0k
        freezero(msg, FIDO_MAXMSG);
87
88
60.0k
        return (r);
89
31.7k
}
90
91
static int
92
fido_dev_authkey_wait(fido_dev_t *dev, es256_pk_t *authkey, int *ms)
93
102k
{
94
102k
        int r;
95
96
102k
        if ((r = fido_dev_authkey_tx(dev, ms)) != FIDO_OK ||
97
102k
            (r = fido_dev_authkey_rx(dev, authkey, ms)) != FIDO_OK)
98
74.3k
                return (r);
99
100
28.0k
        return (FIDO_OK);
101
102k
}
102
103
int
104
fido_dev_authkey(fido_dev_t *dev, es256_pk_t *authkey, int *ms)
105
102k
{
106
102k
        return (fido_dev_authkey_wait(dev, authkey, ms));
107
102k
}