Coverage Report

Created: 2021-07-20 18:14

/libfido2/src/authkey.c
Line
Count
Source
1
/*
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 * Copyright (c) 2018 Yubico AB. All rights reserved.
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 * Use of this source code is governed by a BSD-style
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 * license that can be found in the LICENSE file.
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 */
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#include "fido.h"
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9
static int
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parse_authkey(const cbor_item_t *key, const cbor_item_t *val, void *arg)
11
4.56k
{
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4.56k
        es256_pk_t *authkey = arg;
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4.56k
14
4.56k
        if (cbor_isa_uint(key) == false ||
15
4.56k
            cbor_int_get_width(key) != CBOR_INT_8 ||
16
4.56k
            cbor_get_uint8(key) != 1) {
17
413
                fido_log_debug("%s: cbor type", __func__);
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413
                return (0); /* ignore */
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413
        }
20
4.15k
21
4.15k
        return (es256_pk_decode(val, authkey));
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4.15k
}
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static int
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fido_dev_authkey_tx(fido_dev_t *dev)
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6.52k
{
27
6.52k
        fido_blob_t      f;
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6.52k
        cbor_item_t     *argv[2];
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6.52k
        int              r;
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6.52k
31
6.52k
        fido_log_debug("%s: dev=%p", __func__, (void *)dev);
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6.52k
33
6.52k
        memset(&f, 0, sizeof(f));
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6.52k
        memset(argv, 0, sizeof(argv));
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6.52k
36
6.52k
        /* add command parameters */
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6.52k
        if ((argv[0] = cbor_encode_pin_opt(dev)) == NULL ||
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6.52k
            (argv[1] = cbor_build_uint8(2)) == NULL) {
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1.78k
                fido_log_debug("%s: cbor_build", __func__);
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1.78k
                r = FIDO_ERR_INTERNAL;
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1.78k
                goto fail;
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1.78k
        }
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4.74k
44
4.74k
        /* frame and transmit */
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4.74k
        if (cbor_build_frame(CTAP_CBOR_CLIENT_PIN, argv, nitems(argv),
46
4.74k
            &f) < 0 || fido_tx(dev, CTAP_CMD_CBOR, f.ptr, f.len) < 0) {
47
56
                fido_log_debug("%s: fido_tx", __func__);
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56
                r = FIDO_ERR_TX;
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56
                goto fail;
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56
        }
51
4.68k
52
4.68k
        r = FIDO_OK;
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6.52k
fail:
54
6.52k
        cbor_vector_free(argv, nitems(argv));
55
6.52k
        free(f.ptr);
56
6.52k
57
6.52k
        return (r);
58
4.68k
}
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static int
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fido_dev_authkey_rx(fido_dev_t *dev, es256_pk_t *authkey, int ms)
62
4.68k
{
63
4.68k
        unsigned char   reply[FIDO_MAXMSG];
64
4.68k
        int             reply_len;
65
4.68k
66
4.68k
        fido_log_debug("%s: dev=%p, authkey=%p, ms=%d", __func__, (void *)dev,
67
4.68k
            (void *)authkey, ms);
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4.68k
69
4.68k
        memset(authkey, 0, sizeof(*authkey));
70
4.68k
71
4.68k
        if ((reply_len = fido_rx(dev, CTAP_CMD_CBOR, &reply, sizeof(reply),
72
4.68k
            ms)) < 0) {
73
302
                fido_log_debug("%s: fido_rx", __func__);
74
302
                return (FIDO_ERR_RX);
75
302
        }
76
4.38k
77
4.38k
        return (cbor_parse_reply(reply, (size_t)reply_len, authkey,
78
4.38k
            parse_authkey));
79
4.38k
}
80
81
static int
82
fido_dev_authkey_wait(fido_dev_t *dev, es256_pk_t *authkey, int ms)
83
6.52k
{
84
6.52k
        int r;
85
6.52k
86
6.52k
        if ((r = fido_dev_authkey_tx(dev)) != FIDO_OK ||
87
6.52k
            (r = fido_dev_authkey_rx(dev, authkey, ms)) != FIDO_OK)
88
6.52k
                return (r);
89
4.06k
90
4.06k
        return (FIDO_OK);
91
4.06k
}
92
93
int
94
fido_dev_authkey(fido_dev_t *dev, es256_pk_t *authkey)
95
6.52k
{
96
6.52k
        return (fido_dev_authkey_wait(dev, authkey, -1));
97
6.52k
}