Coverage Report

Created: 2022-01-17 10:46

/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
5.14k
{
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5.14k
        es256_pk_t *authkey = arg;
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14
5.14k
        if (cbor_isa_uint(key) == false ||
15
5.14k
            cbor_int_get_width(key) != CBOR_INT_8 ||
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5.14k
            cbor_get_uint8(key) != 1) {
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511
                fido_log_debug("%s: cbor type", __func__);
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511
                return (0); /* ignore */
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511
        }
20
21
4.63k
        return (es256_pk_decode(val, authkey));
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4.63k
}
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static int
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fido_dev_authkey_tx(fido_dev_t *dev, int *ms)
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8.13k
{
27
8.13k
        fido_blob_t      f;
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8.13k
        cbor_item_t     *argv[2];
29
8.13k
        int              r;
30
31
8.13k
        fido_log_debug("%s: dev=%p", __func__, (void *)dev);
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8.13k
        memset(&f, 0, sizeof(f));
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8.13k
        memset(argv, 0, sizeof(argv));
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        /* add command parameters */
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8.13k
        if ((argv[0] = cbor_encode_pin_opt(dev)) == NULL ||
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8.13k
            (argv[1] = cbor_build_uint8(2)) == NULL) {
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2.44k
                fido_log_debug("%s: cbor_build", __func__);
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2.44k
                r = FIDO_ERR_INTERNAL;
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2.44k
                goto fail;
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2.44k
        }
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        /* frame and transmit */
45
5.69k
        if (cbor_build_frame(CTAP_CBOR_CLIENT_PIN, argv, nitems(argv),
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5.69k
            &f) < 0 || fido_tx(dev, CTAP_CMD_CBOR, f.ptr, f.len, ms) < 0) {
47
84
                fido_log_debug("%s: fido_tx", __func__);
48
84
                r = FIDO_ERR_TX;
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84
                goto fail;
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84
        }
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5.60k
        r = FIDO_OK;
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8.13k
fail:
54
8.13k
        cbor_vector_free(argv, nitems(argv));
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8.13k
        free(f.ptr);
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57
8.13k
        return (r);
58
5.60k
}
59
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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
5.60k
{
63
5.60k
        unsigned char   reply[FIDO_MAXMSG];
64
5.60k
        int             reply_len;
65
66
5.60k
        fido_log_debug("%s: dev=%p, authkey=%p, ms=%d", __func__, (void *)dev,
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5.60k
            (void *)authkey, *ms);
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5.60k
        memset(authkey, 0, sizeof(*authkey));
70
71
5.60k
        if ((reply_len = fido_rx(dev, CTAP_CMD_CBOR, &reply, sizeof(reply),
72
5.60k
            ms)) < 0) {
73
732
                fido_log_debug("%s: fido_rx", __func__);
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732
                return (FIDO_ERR_RX);
75
732
        }
76
77
4.87k
        return (cbor_parse_reply(reply, (size_t)reply_len, authkey,
78
4.87k
            parse_authkey));
79
4.87k
}
80
81
static int
82
fido_dev_authkey_wait(fido_dev_t *dev, es256_pk_t *authkey, int *ms)
83
8.13k
{
84
8.13k
        int r;
85
86
8.13k
        if ((r = fido_dev_authkey_tx(dev, ms)) != FIDO_OK ||
87
8.13k
            (r = fido_dev_authkey_rx(dev, authkey, ms)) != FIDO_OK)
88
8.13k
                return (r);
89
90
4.58k
        return (FIDO_OK);
91
4.58k
}
92
93
int
94
fido_dev_authkey(fido_dev_t *dev, es256_pk_t *authkey, int *ms)
95
8.13k
{
96
8.13k
        return (fido_dev_authkey_wait(dev, authkey, ms));
97
8.13k
}