Coverage Report

Created: 2020-12-02 17:02

/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 <string.h>
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#include "fido.h"
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static int
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parse_authkey(const cbor_item_t *key, const cbor_item_t *val, void *arg)
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3.81k
{
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3.81k
        es256_pk_t *authkey = arg;
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3.81k
15
3.81k
        if (cbor_isa_uint(key) == false ||
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3.81k
            cbor_int_get_width(key) != CBOR_INT_8 ||
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3.81k
            cbor_get_uint8(key) != 1) {
18
421
                fido_log_debug("%s: cbor type", __func__);
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421
                return (0); /* ignore */
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421
        }
21
3.39k
22
3.39k
        return (es256_pk_decode(val, authkey));
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3.39k
}
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static int
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fido_dev_authkey_tx(fido_dev_t *dev)
27
4.62k
{
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4.62k
        fido_blob_t      f;
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4.62k
        cbor_item_t     *argv[2];
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4.62k
        int              r;
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4.62k
32
4.62k
        fido_log_debug("%s: dev=%p", __func__, (void *)dev);
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4.62k
34
4.62k
        memset(&f, 0, sizeof(f));
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4.62k
        memset(argv, 0, sizeof(argv));
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4.62k
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4.62k
        /* add command parameters */
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4.62k
        if ((argv[0] = cbor_build_uint8(1)) == NULL ||
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4.62k
            (argv[1] = cbor_build_uint8(2)) == NULL) {
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                fido_log_debug("%s: cbor_build", __func__);
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                r = FIDO_ERR_INTERNAL;
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                goto fail;
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38
        }
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4.58k
45
4.58k
        /* frame and transmit */
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4.58k
        if (cbor_build_frame(CTAP_CBOR_CLIENT_PIN, argv, nitems(argv),
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4.58k
            &f) < 0 || fido_tx(dev, CTAP_CMD_CBOR, f.ptr, f.len) < 0) {
48
129
                fido_log_debug("%s: fido_tx", __func__);
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129
                r = FIDO_ERR_TX;
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129
                goto fail;
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129
        }
52
4.45k
53
4.45k
        r = FIDO_OK;
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4.62k
fail:
55
4.62k
        cbor_vector_free(argv, nitems(argv));
56
4.62k
        free(f.ptr);
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4.62k
58
4.62k
        return (r);
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4.45k
}
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static int
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fido_dev_authkey_rx(fido_dev_t *dev, es256_pk_t *authkey, int ms)
63
4.45k
{
64
4.45k
        unsigned char   reply[FIDO_MAXMSG];
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4.45k
        int             reply_len;
66
4.45k
67
4.45k
        fido_log_debug("%s: dev=%p, authkey=%p, ms=%d", __func__, (void *)dev,
68
4.45k
            (void *)authkey, ms);
69
4.45k
70
4.45k
        memset(authkey, 0, sizeof(*authkey));
71
4.45k
72
4.45k
        if ((reply_len = fido_rx(dev, CTAP_CMD_CBOR, &reply, sizeof(reply),
73
4.45k
            ms)) < 0) {
74
753
                fido_log_debug("%s: fido_rx", __func__);
75
753
                return (FIDO_ERR_RX);
76
753
        }
77
3.70k
78
3.70k
        return (cbor_parse_reply(reply, (size_t)reply_len, authkey,
79
3.70k
            parse_authkey));
80
3.70k
}
81
82
static int
83
fido_dev_authkey_wait(fido_dev_t *dev, es256_pk_t *authkey, int ms)
84
4.62k
{
85
4.62k
        int r;
86
4.62k
87
4.62k
        if ((r = fido_dev_authkey_tx(dev)) != FIDO_OK ||
88
4.62k
            (r = fido_dev_authkey_rx(dev, authkey, ms)) != FIDO_OK)
89
4.62k
                return (r);
90
3.29k
91
3.29k
        return (FIDO_OK);
92
3.29k
}
93
94
int
95
fido_dev_authkey(fido_dev_t *dev, es256_pk_t *authkey)
96
4.62k
{
97
4.62k
        return (fido_dev_authkey_wait(dev, authkey, -1));
98
4.62k
}