2021-10-01 23:52:55 +00:00
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/*
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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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2023-04-26 16:37:20 +00:00
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#define MAXRPID 64
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2021-10-01 23:52:55 +00:00
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struct param {
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char pin1[MAXSTR];
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char pin2[MAXSTR];
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struct blob reset_wire_data;
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struct blob info_wire_data;
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struct blob set_pin_wire_data;
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struct blob change_pin_wire_data;
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struct blob retry_wire_data;
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struct blob config_wire_data;
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int seed;
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};
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static const uint8_t dummy_reset_wire_data[] = {
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WIREDATA_CTAP_INIT,
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WIREDATA_CTAP_CBOR_INFO,
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WIREDATA_CTAP_KEEPALIVE,
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WIREDATA_CTAP_KEEPALIVE,
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WIREDATA_CTAP_KEEPALIVE,
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WIREDATA_CTAP_CBOR_STATUS,
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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_INFO,
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};
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static const uint8_t dummy_set_pin_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_STATUS,
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};
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static const uint8_t dummy_change_pin_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_STATUS,
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};
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static const uint8_t dummy_retry_wire_data[] = {
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WIREDATA_CTAP_INIT,
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WIREDATA_CTAP_CBOR_INFO,
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WIREDATA_CTAP_CBOR_RETRIES,
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};
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static const uint8_t dummy_config_wire_data[] = {
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WIREDATA_CTAP_INIT,
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WIREDATA_CTAP_CBOR_INFO,
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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->pin1) < 0 ||
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unpack_string(v[2], p->pin2) < 0 ||
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unpack_blob(v[3], &p->reset_wire_data) < 0 ||
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unpack_blob(v[4], &p->info_wire_data) < 0 ||
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unpack_blob(v[5], &p->set_pin_wire_data) < 0 ||
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unpack_blob(v[6], &p->change_pin_wire_data) < 0 ||
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unpack_blob(v[7], &p->retry_wire_data) < 0 ||
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unpack_blob(v[8], &p->config_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->pin1)) == NULL ||
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(argv[2] = pack_string(p->pin2)) == NULL ||
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(argv[3] = pack_blob(&p->reset_wire_data)) == NULL ||
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(argv[4] = pack_blob(&p->info_wire_data)) == NULL ||
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(argv[5] = pack_blob(&p->set_pin_wire_data)) == NULL ||
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(argv[6] = pack_blob(&p->change_pin_wire_data)) == NULL ||
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(argv[7] = pack_blob(&p->retry_wire_data)) == NULL ||
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(argv[8] = pack_blob(&p->config_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.pin1, dummy_pin1, sizeof(dummy.pin1));
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strlcpy(dummy.pin2, dummy_pin2, sizeof(dummy.pin2));
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dummy.reset_wire_data.len = sizeof(dummy_reset_wire_data);
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dummy.info_wire_data.len = sizeof(dummy_info_wire_data);
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dummy.set_pin_wire_data.len = sizeof(dummy_set_pin_wire_data);
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dummy.change_pin_wire_data.len = sizeof(dummy_change_pin_wire_data);
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dummy.retry_wire_data.len = sizeof(dummy_retry_wire_data);
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dummy.config_wire_data.len = sizeof(dummy_config_wire_data);
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memcpy(&dummy.reset_wire_data.body, &dummy_reset_wire_data,
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dummy.reset_wire_data.len);
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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.set_pin_wire_data.body, &dummy_set_pin_wire_data,
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dummy.set_pin_wire_data.len);
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memcpy(&dummy.change_pin_wire_data.body, &dummy_change_pin_wire_data,
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dummy.change_pin_wire_data.len);
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memcpy(&dummy.retry_wire_data.body, &dummy_retry_wire_data,
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dummy.retry_wire_data.len);
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memcpy(&dummy.config_wire_data.body, &dummy_config_wire_data,
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dummy.config_wire_data.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 void
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dev_reset(const struct param *p)
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{
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fido_dev_t *dev;
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set_wire_data(p->reset_wire_data.body, p->reset_wire_data.len);
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if ((dev = open_dev(0)) == NULL)
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return;
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fido_dev_reset(dev);
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fido_dev_close(dev);
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fido_dev_free(&dev);
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}
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static void
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dev_get_cbor_info(const struct param *p)
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{
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fido_dev_t *dev;
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fido_cbor_info_t *ci;
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uint64_t n;
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uint8_t proto, major, minor, build, flags;
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set_wire_data(p->info_wire_data.body, p->info_wire_data.len);
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if ((dev = open_dev(0)) == NULL)
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return;
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proto = fido_dev_protocol(dev);
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major = fido_dev_major(dev);
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minor = fido_dev_minor(dev);
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build = fido_dev_build(dev);
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flags = fido_dev_flags(dev);
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consume(&proto, sizeof(proto));
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consume(&major, sizeof(major));
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consume(&minor, sizeof(minor));
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consume(&build, sizeof(build));
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consume(&flags, sizeof(flags));
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if ((ci = fido_cbor_info_new()) == NULL)
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goto out;
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fido_dev_get_cbor_info(dev, ci);
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for (size_t i = 0; i < fido_cbor_info_versions_len(ci); i++) {
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char * const *sa = fido_cbor_info_versions_ptr(ci);
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consume(sa[i], strlen(sa[i]));
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}
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for (size_t i = 0; i < fido_cbor_info_extensions_len(ci); i++) {
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char * const *sa = fido_cbor_info_extensions_ptr(ci);
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consume(sa[i], strlen(sa[i]));
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}
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for (size_t i = 0; i < fido_cbor_info_transports_len(ci); i++) {
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char * const *sa = fido_cbor_info_transports_ptr(ci);
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consume(sa[i], strlen(sa[i]));
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}
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for (size_t i = 0; i < fido_cbor_info_options_len(ci); i++) {
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char * const *sa = fido_cbor_info_options_name_ptr(ci);
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const bool *va = fido_cbor_info_options_value_ptr(ci);
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consume(sa[i], strlen(sa[i]));
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consume(&va[i], sizeof(va[i]));
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}
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/* +1 on purpose */
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for (size_t i = 0; i <= fido_cbor_info_algorithm_count(ci); i++) {
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const char *type = fido_cbor_info_algorithm_type(ci, i);
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int cose = fido_cbor_info_algorithm_cose(ci, i);
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consume_str(type);
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consume(&cose, sizeof(cose));
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}
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n = fido_cbor_info_maxmsgsiz(ci);
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consume(&n, sizeof(n));
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n = fido_cbor_info_maxcredbloblen(ci);
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consume(&n, sizeof(n));
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n = fido_cbor_info_maxcredcntlst(ci);
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consume(&n, sizeof(n));
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n = fido_cbor_info_maxcredidlen(ci);
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consume(&n, sizeof(n));
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n = fido_cbor_info_fwversion(ci);
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consume(&n, sizeof(n));
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consume(fido_cbor_info_aaguid_ptr(ci), fido_cbor_info_aaguid_len(ci));
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consume(fido_cbor_info_protocols_ptr(ci),
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fido_cbor_info_protocols_len(ci));
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out:
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fido_dev_close(dev);
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fido_dev_free(&dev);
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fido_cbor_info_free(&ci);
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}
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static void
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dev_set_pin(const struct param *p)
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{
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fido_dev_t *dev;
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set_wire_data(p->set_pin_wire_data.body, p->set_pin_wire_data.len);
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if ((dev = open_dev(0)) == NULL)
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return;
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fido_dev_set_pin(dev, p->pin1, NULL);
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fido_dev_close(dev);
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fido_dev_free(&dev);
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}
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static void
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dev_change_pin(const struct param *p)
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{
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fido_dev_t *dev;
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set_wire_data(p->change_pin_wire_data.body, p->change_pin_wire_data.len);
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if ((dev = open_dev(0)) == NULL)
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return;
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fido_dev_set_pin(dev, p->pin2, p->pin1);
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fido_dev_close(dev);
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fido_dev_free(&dev);
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}
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static void
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dev_get_retry_count(const struct param *p)
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{
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fido_dev_t *dev;
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int n = 0;
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set_wire_data(p->retry_wire_data.body, p->retry_wire_data.len);
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if ((dev = open_dev(0)) == NULL)
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return;
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fido_dev_get_retry_count(dev, &n);
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consume(&n, sizeof(n));
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fido_dev_close(dev);
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fido_dev_free(&dev);
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}
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static void
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dev_get_uv_retry_count(const struct param *p)
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{
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fido_dev_t *dev;
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int n = 0;
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set_wire_data(p->retry_wire_data.body, p->retry_wire_data.len);
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if ((dev = open_dev(0)) == NULL)
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return;
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fido_dev_get_uv_retry_count(dev, &n);
|
|
|
|
consume(&n, sizeof(n));
|
|
|
|
fido_dev_close(dev);
|
|
|
|
fido_dev_free(&dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dev_enable_entattest(const struct param *p)
|
|
|
|
{
|
|
|
|
fido_dev_t *dev;
|
|
|
|
const char *pin;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
set_wire_data(p->config_wire_data.body, p->config_wire_data.len);
|
|
|
|
if ((dev = open_dev(0)) == NULL)
|
|
|
|
return;
|
|
|
|
pin = p->pin1;
|
|
|
|
if (strlen(pin) == 0)
|
|
|
|
pin = NULL;
|
|
|
|
r = fido_dev_enable_entattest(dev, pin);
|
|
|
|
consume_str(fido_strerr(r));
|
|
|
|
fido_dev_close(dev);
|
|
|
|
fido_dev_free(&dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dev_toggle_always_uv(const struct param *p)
|
|
|
|
{
|
|
|
|
fido_dev_t *dev;
|
|
|
|
const char *pin;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
set_wire_data(p->config_wire_data.body, p->config_wire_data.len);
|
|
|
|
if ((dev = open_dev(0)) == NULL)
|
|
|
|
return;
|
|
|
|
pin = p->pin1;
|
|
|
|
if (strlen(pin) == 0)
|
|
|
|
pin = NULL;
|
|
|
|
r = fido_dev_toggle_always_uv(dev, pin);
|
|
|
|
consume_str(fido_strerr(r));
|
|
|
|
fido_dev_close(dev);
|
|
|
|
fido_dev_free(&dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dev_force_pin_change(const struct param *p)
|
|
|
|
{
|
|
|
|
fido_dev_t *dev;
|
|
|
|
const char *pin;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
set_wire_data(p->config_wire_data.body, p->config_wire_data.len);
|
|
|
|
if ((dev = open_dev(0)) == NULL)
|
|
|
|
return;
|
|
|
|
pin = p->pin1;
|
|
|
|
if (strlen(pin) == 0)
|
|
|
|
pin = NULL;
|
|
|
|
r = fido_dev_force_pin_change(dev, pin);
|
|
|
|
consume_str(fido_strerr(r));
|
|
|
|
fido_dev_close(dev);
|
|
|
|
fido_dev_free(&dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dev_set_pin_minlen(const struct param *p)
|
|
|
|
{
|
|
|
|
fido_dev_t *dev;
|
|
|
|
const char *pin;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
set_wire_data(p->config_wire_data.body, p->config_wire_data.len);
|
|
|
|
if ((dev = open_dev(0)) == NULL)
|
|
|
|
return;
|
|
|
|
pin = p->pin1;
|
|
|
|
if (strlen(pin) == 0)
|
|
|
|
pin = NULL;
|
|
|
|
r = fido_dev_set_pin_minlen(dev, strlen(p->pin2), pin);
|
|
|
|
consume_str(fido_strerr(r));
|
|
|
|
fido_dev_close(dev);
|
|
|
|
fido_dev_free(&dev);
|
|
|
|
}
|
|
|
|
|
2023-04-26 16:37:20 +00:00
|
|
|
static void
|
|
|
|
dev_set_pin_minlen_rpid(const struct param *p)
|
|
|
|
{
|
|
|
|
fido_dev_t *dev;
|
|
|
|
const char *rpid[MAXRPID];
|
|
|
|
const char *pin;
|
|
|
|
size_t n;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
set_wire_data(p->config_wire_data.body, p->config_wire_data.len);
|
|
|
|
if ((dev = open_dev(0)) == NULL)
|
|
|
|
return;
|
|
|
|
n = uniform_random(MAXRPID);
|
|
|
|
for (size_t i = 0; i < n; i++)
|
|
|
|
rpid[i] = dummy_rp_id;
|
|
|
|
pin = p->pin1;
|
|
|
|
if (strlen(pin) == 0)
|
|
|
|
pin = NULL;
|
|
|
|
r = fido_dev_set_pin_minlen_rpid(dev, rpid, n, pin);
|
|
|
|
consume_str(fido_strerr(r));
|
|
|
|
fido_dev_close(dev);
|
|
|
|
fido_dev_free(&dev);
|
|
|
|
}
|
|
|
|
|
2021-10-01 23:52:55 +00:00
|
|
|
void
|
|
|
|
test(const struct param *p)
|
|
|
|
{
|
|
|
|
prng_init((unsigned int)p->seed);
|
2023-04-26 16:37:20 +00:00
|
|
|
fuzz_clock_reset();
|
2021-10-01 23:52:55 +00:00
|
|
|
fido_init(FIDO_DEBUG);
|
|
|
|
fido_set_log_handler(consume_str);
|
|
|
|
|
|
|
|
dev_reset(p);
|
|
|
|
dev_get_cbor_info(p);
|
|
|
|
dev_set_pin(p);
|
|
|
|
dev_change_pin(p);
|
|
|
|
dev_get_retry_count(p);
|
|
|
|
dev_get_uv_retry_count(p);
|
|
|
|
dev_enable_entattest(p);
|
|
|
|
dev_toggle_always_uv(p);
|
|
|
|
dev_force_pin_change(p);
|
|
|
|
dev_set_pin_minlen(p);
|
2023-04-26 16:37:20 +00:00
|
|
|
dev_set_pin_minlen_rpid(p);
|
2021-10-01 23:52:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
mutate(struct param *p, unsigned int seed, unsigned int flags) NO_MSAN
|
|
|
|
{
|
|
|
|
if (flags & MUTATE_SEED)
|
|
|
|
p->seed = (int)seed;
|
|
|
|
|
|
|
|
if (flags & MUTATE_PARAM) {
|
|
|
|
mutate_string(p->pin1);
|
|
|
|
mutate_string(p->pin2);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (flags & MUTATE_WIREDATA) {
|
|
|
|
mutate_blob(&p->reset_wire_data);
|
|
|
|
mutate_blob(&p->info_wire_data);
|
|
|
|
mutate_blob(&p->set_pin_wire_data);
|
|
|
|
mutate_blob(&p->change_pin_wire_data);
|
|
|
|
mutate_blob(&p->retry_wire_data);
|
|
|
|
}
|
|
|
|
}
|