Some highlights from NEWS: ** Added OpenSSL 3.0 compatibility. ** Removed OpenSSL 1.0 compatibility. ** Support for FIDO 2.1 "minPinLength" extension. ** Support for COSE_EDDSA, COSE_ES256, and COSE_RS1 attestation. ** Support for TPM 2.0 attestation. ** Support for device timeouts; see fido_dev_set_timeout(). ** New API calls: - es256_pk_from_EVP_PKEY; - fido_cred_attstmt_len; - fido_cred_attstmt_ptr; - fido_cred_pin_minlen; - fido_cred_set_attstmt; - fido_cred_set_pin_minlen; - fido_dev_set_pin_minlen_rpid; - fido_dev_set_timeout; - rs256_pk_from_EVP_PKEY. ** Reliability and portability fixes. ** Better handling of HID devices without identification strings; gh#381. Relnotes: Yes Sponsored by: The FreeBSD Foundation
442 lines
10 KiB
C
442 lines
10 KiB
C
/*
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* Copyright (c) 2019 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 <assert.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "mutator_aux.h"
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#include "wiredata_fido2.h"
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#include "dummy.h"
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#include "../openbsd-compat/openbsd-compat.h"
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/* Parameter set defining a FIDO2 credential management operation. */
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struct param {
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char pin[MAXSTR];
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char name[MAXSTR];
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int seed;
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struct blob id;
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struct blob info_wire_data;
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struct blob enroll_wire_data;
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struct blob list_wire_data;
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struct blob set_name_wire_data;
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struct blob remove_wire_data;
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};
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/*
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* Collection of HID reports from an authenticator issued with a FIDO2
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* 'getFingerprintSensorInfo' bio enrollment command.
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*/
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static const uint8_t dummy_info_wire_data[] = {
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WIREDATA_CTAP_INIT,
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WIREDATA_CTAP_CBOR_INFO,
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WIREDATA_CTAP_CBOR_BIO_INFO,
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};
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/*
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* Collection of HID reports from an authenticator issued with FIDO2
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* 'enrollBegin' + 'enrollCaptureNextSample' bio enrollment commands.
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*/
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static const uint8_t dummy_enroll_wire_data[] = {
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WIREDATA_CTAP_INIT,
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WIREDATA_CTAP_CBOR_INFO,
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WIREDATA_CTAP_CBOR_AUTHKEY,
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WIREDATA_CTAP_CBOR_PINTOKEN,
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WIREDATA_CTAP_CBOR_BIO_ENROLL,
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};
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/*
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* Collection of HID reports from an authenticator issued with a FIDO2
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* 'enumerateEnrollments' bio enrollment command.
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*/
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static const uint8_t dummy_list_wire_data[] = {
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WIREDATA_CTAP_INIT,
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WIREDATA_CTAP_CBOR_INFO,
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WIREDATA_CTAP_CBOR_AUTHKEY,
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WIREDATA_CTAP_CBOR_PINTOKEN,
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WIREDATA_CTAP_CBOR_BIO_ENUM,
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};
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/*
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* Collection of HID reports from an authenticator issued with a FIDO2
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* 'setFriendlyName' bio enrollment command.
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*/
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static const uint8_t dummy_set_name_wire_data[] = {
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WIREDATA_CTAP_INIT,
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WIREDATA_CTAP_CBOR_INFO,
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WIREDATA_CTAP_CBOR_AUTHKEY,
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WIREDATA_CTAP_CBOR_PINTOKEN,
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WIREDATA_CTAP_CBOR_STATUS,
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};
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/*
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* Collection of HID reports from an authenticator issued with a FIDO2
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* 'removeEnrollment' bio enrollment command.
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*/
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static const uint8_t dummy_remove_wire_data[] = {
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WIREDATA_CTAP_INIT,
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WIREDATA_CTAP_CBOR_INFO,
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WIREDATA_CTAP_CBOR_AUTHKEY,
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WIREDATA_CTAP_CBOR_PINTOKEN,
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WIREDATA_CTAP_CBOR_STATUS,
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};
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struct param *
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unpack(const uint8_t *ptr, size_t len)
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{
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cbor_item_t *item = NULL, **v;
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struct cbor_load_result cbor;
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struct param *p;
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int ok = -1;
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if ((p = calloc(1, sizeof(*p))) == NULL ||
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(item = cbor_load(ptr, len, &cbor)) == NULL ||
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cbor.read != len ||
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cbor_isa_array(item) == false ||
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cbor_array_is_definite(item) == false ||
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cbor_array_size(item) != 9 ||
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(v = cbor_array_handle(item)) == NULL)
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goto fail;
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if (unpack_int(v[0], &p->seed) < 0 ||
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unpack_string(v[1], p->pin) < 0 ||
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unpack_string(v[2], p->name) < 0 ||
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unpack_blob(v[3], &p->id) < 0 ||
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unpack_blob(v[4], &p->info_wire_data) < 0 ||
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unpack_blob(v[5], &p->enroll_wire_data) < 0 ||
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unpack_blob(v[6], &p->list_wire_data) < 0 ||
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unpack_blob(v[7], &p->set_name_wire_data) < 0 ||
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unpack_blob(v[8], &p->remove_wire_data) < 0)
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goto fail;
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ok = 0;
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fail:
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if (ok < 0) {
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free(p);
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p = NULL;
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}
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if (item)
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cbor_decref(&item);
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return p;
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}
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size_t
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pack(uint8_t *ptr, size_t len, const struct param *p)
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{
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cbor_item_t *argv[9], *array = NULL;
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size_t cbor_alloc_len, cbor_len = 0;
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unsigned char *cbor = NULL;
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memset(argv, 0, sizeof(argv));
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if ((array = cbor_new_definite_array(9)) == NULL ||
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(argv[0] = pack_int(p->seed)) == NULL ||
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(argv[1] = pack_string(p->pin)) == NULL ||
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(argv[2] = pack_string(p->name)) == NULL ||
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(argv[3] = pack_blob(&p->id)) == NULL ||
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(argv[4] = pack_blob(&p->info_wire_data)) == NULL ||
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(argv[5] = pack_blob(&p->enroll_wire_data)) == NULL ||
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(argv[6] = pack_blob(&p->list_wire_data)) == NULL ||
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(argv[7] = pack_blob(&p->set_name_wire_data)) == NULL ||
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(argv[8] = pack_blob(&p->remove_wire_data)) == NULL)
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goto fail;
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for (size_t i = 0; i < 9; i++)
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if (cbor_array_push(array, argv[i]) == false)
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goto fail;
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if ((cbor_len = cbor_serialize_alloc(array, &cbor,
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&cbor_alloc_len)) > len) {
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cbor_len = 0;
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goto fail;
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}
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memcpy(ptr, cbor, cbor_len);
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fail:
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for (size_t i = 0; i < 9; i++)
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if (argv[i])
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cbor_decref(&argv[i]);
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if (array)
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cbor_decref(&array);
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free(cbor);
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return cbor_len;
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}
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size_t
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pack_dummy(uint8_t *ptr, size_t len)
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{
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struct param dummy;
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uint8_t blob[4096];
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size_t blob_len;
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memset(&dummy, 0, sizeof(dummy));
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strlcpy(dummy.pin, dummy_pin, sizeof(dummy.pin));
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strlcpy(dummy.name, dummy_name, sizeof(dummy.name));
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dummy.info_wire_data.len = sizeof(dummy_info_wire_data);
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dummy.enroll_wire_data.len = sizeof(dummy_enroll_wire_data);
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dummy.list_wire_data.len = sizeof(dummy_list_wire_data);
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dummy.set_name_wire_data.len = sizeof(dummy_set_name_wire_data);
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dummy.remove_wire_data.len = sizeof(dummy_remove_wire_data);
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dummy.id.len = sizeof(dummy_id);
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memcpy(&dummy.info_wire_data.body, &dummy_info_wire_data,
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dummy.info_wire_data.len);
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memcpy(&dummy.enroll_wire_data.body, &dummy_enroll_wire_data,
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dummy.enroll_wire_data.len);
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memcpy(&dummy.list_wire_data.body, &dummy_list_wire_data,
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dummy.list_wire_data.len);
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memcpy(&dummy.set_name_wire_data.body, &dummy_set_name_wire_data,
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dummy.set_name_wire_data.len);
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memcpy(&dummy.remove_wire_data.body, &dummy_remove_wire_data,
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dummy.remove_wire_data.len);
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memcpy(&dummy.id.body, &dummy_id, dummy.id.len);
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assert((blob_len = pack(blob, sizeof(blob), &dummy)) != 0);
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if (blob_len > len) {
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memcpy(ptr, blob, len);
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return len;
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}
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memcpy(ptr, blob, blob_len);
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return blob_len;
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}
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static fido_dev_t *
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prepare_dev(void)
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{
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fido_dev_t *dev;
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bool x;
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if ((dev = open_dev(0)) == NULL)
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return NULL;
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x = fido_dev_is_fido2(dev);
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consume(&x, sizeof(x));
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x = fido_dev_supports_pin(dev);
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consume(&x, sizeof(x));
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x = fido_dev_has_pin(dev);
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consume(&x, sizeof(x));
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x = fido_dev_supports_uv(dev);
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consume(&x, sizeof(x));
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x = fido_dev_has_uv(dev);
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consume(&x, sizeof(x));
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return dev;
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}
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static void
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get_info(const struct param *p)
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{
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fido_dev_t *dev = NULL;
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fido_bio_info_t *i = NULL;
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uint8_t type;
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uint8_t max_samples;
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int r;
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set_wire_data(p->info_wire_data.body, p->info_wire_data.len);
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if ((dev = prepare_dev()) == NULL || (i = fido_bio_info_new()) == NULL)
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goto done;
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r = fido_bio_dev_get_info(dev, i);
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consume_str(fido_strerr(r));
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type = fido_bio_info_type(i);
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max_samples = fido_bio_info_max_samples(i);
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consume(&type, sizeof(type));
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consume(&max_samples, sizeof(max_samples));
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done:
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if (dev)
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fido_dev_close(dev);
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fido_dev_free(&dev);
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fido_bio_info_free(&i);
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}
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static void
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consume_template(const fido_bio_template_t *t)
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{
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consume_str(fido_bio_template_name(t));
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consume(fido_bio_template_id_ptr(t), fido_bio_template_id_len(t));
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}
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static void
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consume_enroll(fido_bio_enroll_t *e)
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{
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uint8_t last_status;
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uint8_t remaining_samples;
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last_status = fido_bio_enroll_last_status(e);
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remaining_samples = fido_bio_enroll_remaining_samples(e);
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consume(&last_status, sizeof(last_status));
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consume(&remaining_samples, sizeof(remaining_samples));
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}
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static void
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enroll(const struct param *p)
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{
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fido_dev_t *dev = NULL;
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fido_bio_template_t *t = NULL;
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fido_bio_enroll_t *e = NULL;
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size_t cnt = 0;
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set_wire_data(p->enroll_wire_data.body, p->enroll_wire_data.len);
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if ((dev = prepare_dev()) == NULL ||
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(t = fido_bio_template_new()) == NULL ||
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(e = fido_bio_enroll_new()) == NULL)
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goto done;
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fido_bio_dev_enroll_begin(dev, t, e, (uint32_t)p->seed, p->pin);
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consume_template(t);
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consume_enroll(e);
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while (fido_bio_enroll_remaining_samples(e) > 0 && cnt++ < 5) {
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fido_bio_dev_enroll_continue(dev, t, e, p->seed);
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consume_template(t);
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consume_enroll(e);
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}
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done:
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if (dev)
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fido_dev_close(dev);
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fido_dev_free(&dev);
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fido_bio_template_free(&t);
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fido_bio_enroll_free(&e);
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}
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static void
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list(const struct param *p)
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{
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fido_dev_t *dev = NULL;
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fido_bio_template_array_t *ta = NULL;
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const fido_bio_template_t *t = NULL;
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set_wire_data(p->list_wire_data.body, p->list_wire_data.len);
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if ((dev = prepare_dev()) == NULL ||
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(ta = fido_bio_template_array_new()) == NULL)
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goto done;
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fido_bio_dev_get_template_array(dev, ta, p->pin);
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/* +1 on purpose */
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for (size_t i = 0; i < fido_bio_template_array_count(ta) + 1; i++)
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if ((t = fido_bio_template(ta, i)) != NULL)
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consume_template(t);
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done:
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if (dev)
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fido_dev_close(dev);
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fido_dev_free(&dev);
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fido_bio_template_array_free(&ta);
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}
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static void
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set_name(const struct param *p)
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{
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fido_dev_t *dev = NULL;
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fido_bio_template_t *t = NULL;
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set_wire_data(p->set_name_wire_data.body, p->set_name_wire_data.len);
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if ((dev = prepare_dev()) == NULL ||
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(t = fido_bio_template_new()) == NULL)
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goto done;
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fido_bio_template_set_name(t, p->name);
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fido_bio_template_set_id(t, p->id.body, p->id.len);
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consume_template(t);
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fido_bio_dev_set_template_name(dev, t, p->pin);
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done:
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if (dev)
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fido_dev_close(dev);
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fido_dev_free(&dev);
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fido_bio_template_free(&t);
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}
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static void
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del(const struct param *p)
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{
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fido_dev_t *dev = NULL;
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fido_bio_template_t *t = NULL;
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int r;
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set_wire_data(p->remove_wire_data.body, p->remove_wire_data.len);
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if ((dev = prepare_dev()) == NULL ||
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(t = fido_bio_template_new()) == NULL)
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goto done;
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r = fido_bio_template_set_id(t, p->id.body, p->id.len);
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consume_template(t);
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consume_str(fido_strerr(r));
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fido_bio_dev_enroll_remove(dev, t, p->pin);
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done:
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if (dev)
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fido_dev_close(dev);
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fido_dev_free(&dev);
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fido_bio_template_free(&t);
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}
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void
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test(const struct param *p)
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{
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prng_init((unsigned int)p->seed);
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fuzz_clock_reset();
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fido_init(FIDO_DEBUG);
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fido_set_log_handler(consume_str);
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get_info(p);
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enroll(p);
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list(p);
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set_name(p);
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del(p);
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}
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void
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mutate(struct param *p, unsigned int seed, unsigned int flags) NO_MSAN
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{
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if (flags & MUTATE_SEED)
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p->seed = (int)seed;
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if (flags & MUTATE_PARAM) {
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mutate_blob(&p->id);
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mutate_string(p->pin);
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mutate_string(p->name);
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}
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if (flags & MUTATE_WIREDATA) {
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mutate_blob(&p->info_wire_data);
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mutate_blob(&p->enroll_wire_data);
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mutate_blob(&p->list_wire_data);
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mutate_blob(&p->set_name_wire_data);
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mutate_blob(&p->remove_wire_data);
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}
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}
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