## Coverage Report

#### Created: 2023-09-23 17:42

    /libfido2/src/extern.h

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    1
    /*
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     * Copyright (c) 2018-2022 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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     * SPDX-License-Identifier: BSD-2-Clause
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     */
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    8
    #ifndef _EXTERN_H
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    #define _EXTERN_H
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    11
    #ifdef __MINGW32__
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    #include <sys/types.h>
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    #endif
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    15
    #ifdef HAVE_SIGNAL_H
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    #include <signal.h>
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    #endif
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    #include <stdint.h>
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    #include "fido/types.h"
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    #include "blob.h"
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    24
    #ifdef __cplusplus
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    extern "C" {
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    #endif /* __cplusplus */
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    /* aes256 */
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    int aes256_cbc_dec(const fido_dev_t *dev, const fido_blob_t *,
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        const fido_blob_t *, fido_blob_t *);
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    int aes256_cbc_enc(const fido_dev_t *dev, const fido_blob_t *,
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        const fido_blob_t *, fido_blob_t *);
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    int aes256_gcm_dec(const fido_blob_t *, const fido_blob_t *,
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        const fido_blob_t *, const fido_blob_t *, fido_blob_t *);
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    int aes256_gcm_enc(const fido_blob_t *, const fido_blob_t *,
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        const fido_blob_t *, const fido_blob_t *, fido_blob_t *);
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    38
    /* cbor encoding functions */
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    cbor_item_t *cbor_build_uint(const uint64_t);
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    cbor_item_t *cbor_flatten_vector(cbor_item_t **, size_t);
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    cbor_item_t *cbor_encode_assert_opt(fido_opt_t, fido_opt_t);
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    cbor_item_t *cbor_encode_change_pin_auth(const fido_dev_t *,
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        const fido_blob_t *, const fido_blob_t *, const fido_blob_t *);
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    cbor_item_t *cbor_encode_cred_ext(const fido_cred_ext_t *, const fido_blob_t *);
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    cbor_item_t *cbor_encode_assert_ext(fido_dev_t *,
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        const fido_assert_ext_t *, const fido_blob_t *, const es256_pk_t *);
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    cbor_item_t *cbor_encode_cred_opt(fido_opt_t, fido_opt_t);
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    cbor_item_t *cbor_encode_pin_auth(const fido_dev_t *, const fido_blob_t *,
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        const fido_blob_t *);
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    cbor_item_t *cbor_encode_pin_opt(const fido_dev_t *);
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    cbor_item_t *cbor_encode_pubkey(const fido_blob_t *);
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    cbor_item_t *cbor_encode_pubkey_list(const fido_blob_array_t *);
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    cbor_item_t *cbor_encode_pubkey_param(int);
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    cbor_item_t *cbor_encode_rp_entity(const fido_rp_t *);
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    cbor_item_t *cbor_encode_str_array(const fido_str_array_t *);
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    cbor_item_t *cbor_encode_user_entity(const fido_user_t *);
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    cbor_item_t *es256_pk_encode(const es256_pk_t *, int);
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    59
    /* cbor decoding functions */
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    int cbor_decode_attstmt(const cbor_item_t *, fido_attstmt_t *);
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    int cbor_decode_bool(const cbor_item_t *, bool *);
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    int cbor_decode_cred_authdata(const cbor_item_t *, int, fido_blob_t *,
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        fido_authdata_t *, fido_attcred_t *, fido_cred_ext_t *);
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    int cbor_decode_assert_authdata(const cbor_item_t *, fido_blob_t *,
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        fido_authdata_t *, fido_assert_extattr_t *);
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    int cbor_decode_cred_id(const cbor_item_t *, fido_blob_t *);
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    int cbor_decode_fmt(const cbor_item_t *, char **);
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    int cbor_decode_pubkey(const cbor_item_t *, int *, void *);
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    int cbor_decode_rp_entity(const cbor_item_t *, fido_rp_t *);
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    int cbor_decode_uint64(const cbor_item_t *, uint64_t *);
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    int cbor_decode_user(const cbor_item_t *, fido_user_t *);
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    int es256_pk_decode(const cbor_item_t *, es256_pk_t *);
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    int es384_pk_decode(const cbor_item_t *, es384_pk_t *);
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    int rs256_pk_decode(const cbor_item_t *, rs256_pk_t *);
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    int eddsa_pk_decode(const cbor_item_t *, eddsa_pk_t *);
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    77
    /* auxiliary cbor routines */
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    int cbor_add_bool(cbor_item_t *, const char *, fido_opt_t);
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    int cbor_add_bytestring(cbor_item_t *, const char *, const unsigned char *,
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        size_t);
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    int cbor_add_string(cbor_item_t *, const char *, const char *);
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    int cbor_array_iter(const cbor_item_t *, void *, int(*)(const cbor_item_t *,
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        void *));
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    int cbor_build_frame(uint8_t, cbor_item_t *[], size_t, fido_blob_t *);
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    int cbor_bytestring_copy(const cbor_item_t *, unsigned char **, size_t *);
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    int cbor_map_iter(const cbor_item_t *, void *, int(*)(const cbor_item_t *,
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        const cbor_item_t *, void *));
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    int cbor_string_copy(const cbor_item_t *, char **);
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    int cbor_parse_reply(const unsigned char *, size_t, void *,
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        int(*)(const cbor_item_t *, const cbor_item_t *, void *));
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    int cbor_add_uv_params(fido_dev_t *, uint8_t, const fido_blob_t *,
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        const es256_pk_t *, const fido_blob_t *, const char *, const char *,
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        cbor_item_t **, cbor_item_t **, int *);
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    void cbor_vector_free(cbor_item_t **, size_t);
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    int cbor_array_append(cbor_item_t **, cbor_item_t *);
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    int cbor_array_drop(cbor_item_t **, size_t);
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    98
    /* deflate */
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    int fido_compress(fido_blob_t *, const fido_blob_t *);
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    int fido_uncompress(fido_blob_t *, const fido_blob_t *, size_t);
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    102
    #ifndef nitems
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    51.5k
    #define nitems(_a)      (sizeof((_a)) / sizeof((_a)[0]))
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    #endif
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    /* buf */
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    int fido_buf_read(const unsigned char **, size_t *, void *, size_t);
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    int fido_buf_write(unsigned char **, size_t *, const void *, size_t);
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    110
    /* hid i/o */
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    void *fido_hid_open(const char *);
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    void  fido_hid_close(void *);
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    int fido_hid_read(void *, unsigned char *, size_t, int);
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    int fido_hid_write(void *, const unsigned char *, size_t);
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    int fido_hid_get_usage(const uint8_t *, size_t, uint32_t *);
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    int fido_hid_get_report_len(const uint8_t *, size_t, size_t *, size_t *);
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    int fido_hid_unix_open(const char *);
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    int fido_hid_unix_wait(int, int, const fido_sigset_t *);
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    int fido_hid_set_sigmask(void *, const fido_sigset_t *);
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    size_t fido_hid_report_in_len(void *);
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    size_t fido_hid_report_out_len(void *);
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    123
    /* nfc i/o */
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    bool fido_is_nfc(const char *);
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    bool nfc_is_fido(const char *);
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    void *fido_nfc_open(const char *);
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    void  fido_nfc_close(void *);
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    int fido_nfc_read(void *, unsigned char *, size_t, int);
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    int fido_nfc_write(void *, const unsigned char *, size_t);
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    int fido_nfc_rx(fido_dev_t *, uint8_t, unsigned char *, size_t, int);
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    int fido_nfc_tx(fido_dev_t *, uint8_t, const unsigned char *, size_t);
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    int fido_nfc_set_sigmask(void *, const fido_sigset_t *);
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    int fido_dev_set_nfc(fido_dev_t *);
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    135
    /* pcsc i/o */
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    bool fido_is_pcsc(const char *);
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    void *fido_pcsc_open(const char *);
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    void  fido_pcsc_close(void *);
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    int fido_pcsc_read(void *, unsigned char *, size_t, int);
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    int fido_pcsc_write(void *, const unsigned char *, size_t);
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    int fido_pcsc_rx(fido_dev_t *, uint8_t, unsigned char *, size_t, int);
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    int fido_pcsc_tx(fido_dev_t *, uint8_t, const unsigned char *, size_t);
    143
    int fido_dev_set_pcsc(fido_dev_t *);
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    145
    /* windows hello */
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    int fido_winhello_manifest(fido_dev_info_t *, size_t, size_t *);
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    int fido_winhello_open(fido_dev_t *);
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    int fido_winhello_close(fido_dev_t *);
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    int fido_winhello_cancel(fido_dev_t *);
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    int fido_winhello_get_assert(fido_dev_t *, fido_assert_t *, const char *, int);
    151
    int fido_winhello_get_cbor_info(fido_dev_t *, fido_cbor_info_t *);
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    int fido_winhello_make_cred(fido_dev_t *, fido_cred_t *, const char *, int);
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    154
    /* generic i/o */
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    int fido_rx_cbor_status(fido_dev_t *, int *);
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    int fido_rx(fido_dev_t *, uint8_t, void *, size_t, int *);
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    int fido_tx(fido_dev_t *, uint8_t, const void *, size_t, int *);
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    159
    /* log */
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    #ifdef FIDO_NO_DIAGNOSTIC
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    #define fido_log_init(...)      do { /* nothing */ } while (0)
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    #define fido_log_debug(...)     do { /* nothing */ } while (0)
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    #define fido_log_xxd(...)       do { /* nothing */ } while (0)
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    #define fido_log_error(...)     do { /* nothing */ } while (0)
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    #else
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    #ifdef __GNUC__
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    void fido_log_init(void);
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    void fido_log_debug(const char *, ...)
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        __attribute__((__format__ (printf, 1, 2)));
    170
    void fido_log_xxd(const void *, size_t, const char *, ...)
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        __attribute__((__format__ (printf, 3, 4)));
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    void fido_log_error(int, const char *, ...)
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        __attribute__((__format__ (printf, 2, 3)));
    174
    #else
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    void fido_log_init(void);
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    void fido_log_debug(const char *, ...);
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    void fido_log_xxd(const void *, size_t, const char *, ...);
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    void fido_log_error(int, const char *, ...);
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    #endif /* __GNUC__ */
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    #endif /* FIDO_NO_DIAGNOSTIC */
    181
    182
    /* u2f */
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    int u2f_register(fido_dev_t *, fido_cred_t *, int *);
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    int u2f_authenticate(fido_dev_t *, fido_assert_t *, int *);
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    int u2f_get_touch_begin(fido_dev_t *, int *);
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    int u2f_get_touch_status(fido_dev_t *, int *, int *);
    187
    188
    /* unexposed fido ops */
    189
    uint8_t fido_dev_get_pin_protocol(const fido_dev_t *);
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    int fido_dev_authkey(fido_dev_t *, es256_pk_t *, int *);
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    int fido_dev_get_cbor_info_wait(fido_dev_t *, fido_cbor_info_t *, int *);
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    int fido_dev_get_uv_token(fido_dev_t *, uint8_t, const char *,
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        const fido_blob_t *, const es256_pk_t *, const char *, fido_blob_t *,
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        int *);
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    uint64_t fido_dev_maxmsgsize(const fido_dev_t *);
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    int fido_do_ecdh(fido_dev_t *, es256_pk_t **, fido_blob_t **, int *);
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    198
    /* types */
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    void fido_algo_array_free(fido_algo_array_t *);
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    void fido_byte_array_free(fido_byte_array_t *);
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    void fido_cert_array_free(fido_cert_array_t *);
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    void fido_opt_array_free(fido_opt_array_t *);
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    void fido_str_array_free(fido_str_array_t *);
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    void fido_algo_free(fido_algo_t *);
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    int fido_str_array_pack(fido_str_array_t *, const char * const *, size_t);
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    207
    /* misc */
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    void fido_assert_reset_rx(fido_assert_t *);
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    void fido_assert_reset_tx(fido_assert_t *);
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    void fido_cred_reset_rx(fido_cred_t *);
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    void fido_cred_reset_tx(fido_cred_t *);
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    void fido_cbor_info_reset(fido_cbor_info_t *);
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    int fido_blob_serialise(fido_blob_t *, const cbor_item_t *);
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    int fido_check_flags(uint8_t, fido_opt_t, fido_opt_t);
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    int fido_check_rp_id(const char *, const unsigned char *);
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    int fido_get_random(void *, size_t);
    217
    int fido_sha256(fido_blob_t *, const u_char *, size_t);
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    int fido_time_now(struct timespec *);
    219
    int fido_time_delta(const struct timespec *, int *);
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    int fido_to_uint64(const char *, int, uint64_t *);
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    222
    /* crypto */
    223
    int es256_verify_sig(const fido_blob_t *, EVP_PKEY *, const fido_blob_t *);
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    int es384_verify_sig(const fido_blob_t *, EVP_PKEY *, const fido_blob_t *);
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    int rs256_verify_sig(const fido_blob_t *, EVP_PKEY *, const fido_blob_t *);
    226
    int eddsa_verify_sig(const fido_blob_t *, EVP_PKEY *, const fido_blob_t *);
    227
    int rs1_verify_sig(const fido_blob_t *, EVP_PKEY *, const fido_blob_t *);
    228
    int es256_pk_verify_sig(const fido_blob_t *, const es256_pk_t *,
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        const fido_blob_t *);
    230
    int es384_pk_verify_sig(const fido_blob_t *, const es384_pk_t *,
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        const fido_blob_t *);
    232
    int rs256_pk_verify_sig(const fido_blob_t *, const rs256_pk_t *,
    233
        const fido_blob_t *);
    234
    int eddsa_pk_verify_sig(const fido_blob_t *, const eddsa_pk_t *,
    235
        const fido_blob_t *);
    236
    int fido_get_signed_hash(int, fido_blob_t *, const fido_blob_t *,
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        const fido_blob_t *);
    238
    int fido_get_signed_hash_tpm(fido_blob_t *, const fido_blob_t *,
    239
        const fido_blob_t *, const fido_attstmt_t *, const fido_attcred_t *);
    240
    241
    /* device manifest functions */
    242
    int fido_hid_manifest(fido_dev_info_t *, size_t, size_t *);
    243
    int fido_nfc_manifest(fido_dev_info_t *, size_t, size_t *);
    244
    int fido_pcsc_manifest(fido_dev_info_t *, size_t, size_t *);
    245
    246
    /* fuzzing instrumentation */
    247
    #ifdef FIDO_FUZZ
    248
    uint32_t uniform_random(uint32_t);
    249
    #endif
    250
    251
    /* internal device capability flags */
    252
    5.88k
    #define FIDO_DEV_PIN_SET        0x001
    253
    9.13k
    #define FIDO_DEV_PIN_UNSET      0x002
    254
    7.15k
    #define FIDO_DEV_CRED_PROT      0x004
    255
    6.49k
    #define FIDO_DEV_CREDMAN        0x008
    256
    26.1k
    #define FIDO_DEV_PIN_PROTOCOL1  0x010
    257
    24.3k
    #define FIDO_DEV_PIN_PROTOCOL2  0x020
    258
    5.91k
    #define FIDO_DEV_UV_SET         0x040
    259
    3.10k
    #define FIDO_DEV_UV_UNSET       0x080
    260
    6.39k
    #define FIDO_DEV_TOKEN_PERMS    0x100
    261
    0
    #define FIDO_DEV_WINHELLO       0x200
    262
    263
    /* miscellanea */
    264
    3.78k
    #define FIDO_DUMMY_CLIENTDATA   ""
    265
    2.00k
    #define FIDO_DUMMY_RP_ID        "localhost"
    266
    207
    #define FIDO_DUMMY_USER_NAME    "dummy"
    267
    1.98k
    #define FIDO_DUMMY_USER_ID      1
    268
    #define FIDO_WINHELLO_PATH      "windows://hello"
    269
    3.44M
    #define FIDO_NFC_PREFIX         "nfc:"
    270
    1.24M
    #define FIDO_PCSC_PREFIX        "pcsc:"
    271
    272
    #ifdef __cplusplus
    273
    } /* extern "C" */
    274
    #endif /* __cplusplus */
    275
    276
    #endif /* !_EXTERN_H */