aboutsummaryrefslogtreecommitdiff
path: root/NK_C_API.cc
blob: 9a8ac3c3ff273a2f03321eb44fb008296020ce31 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
/*
 * Copyright (c) 2015-2018 Nitrokey UG
 *
 * This file is part of libnitrokey.
 *
 * libnitrokey is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * any later version.
 *
 * libnitrokey is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with libnitrokey. If not, see <http://www.gnu.org/licenses/>.
 *
 * SPDX-License-Identifier: LGPL-3.0
 */

#include "NK_C_API.h"
#include <iostream>
#include <tuple>
#include "libnitrokey/NitrokeyManager.h"
#include <cstring>
#include "libnitrokey/LibraryException.h"
#include "libnitrokey/cxx_semantics.h"
#include "libnitrokey/stick20_commands.h"
#include "libnitrokey/device_proto.h"
#include "version.h"

#ifdef _MSC_VER
#ifdef _WIN32
#pragma message "Using own strndup"
char * strndup(const char* str, size_t maxlen) {
	size_t len = strnlen(str, maxlen);
	char* dup = (char *)malloc(len + 1);
	memcpy(dup, str, len);
	dup[len] = 0;
	return dup;
}
#endif
#endif

using namespace nitrokey;

const uint8_t NK_PWS_SLOT_COUNT = PWS_SLOT_COUNT;
static uint8_t NK_last_command_status = 0;
static const int max_string_field_length = 100;

template <typename T>
T* duplicate_vector_and_clear(std::vector<T> &v){
    auto d = new T[v.size()];
    std::copy(v.begin(), v.end(), d);
    std::fill(v.begin(), v.end(), 0);
    return d;
}

template <typename R, typename T>
std::tuple<int, R> get_with_status(T func, R fallback) {
    NK_last_command_status = 0;
    try {
        return std::make_tuple(0, func());
    }
    catch (CommandFailedException & commandFailedException){
        NK_last_command_status = commandFailedException.last_command_status;
    }
    catch (LibraryException & libraryException){
        NK_last_command_status = libraryException.exception_id();
    }
    catch (const DeviceCommunicationException &deviceException){
      NK_last_command_status = 256-deviceException.getType();
    }
    return std::make_tuple(NK_last_command_status, fallback);
}

template <typename T>
uint8_t * get_with_array_result(T func){
    return std::get<1>(get_with_status<uint8_t*>(func, nullptr));
}

template <typename T>
char* get_with_string_result(T func){
    auto result = std::get<1>(get_with_status<char*>(func, nullptr));
    if (result == nullptr) {
        return strndup("", MAXIMUM_STR_REPLY_LENGTH);
    }
    return result;
}

template <typename T>
auto get_with_result(T func){
    return std::get<1>(get_with_status(func, static_cast<decltype(func())>(0)));
}

template <typename T>
uint8_t get_without_result(T func){
    NK_last_command_status = 0;
    try {
        func();
        return 0;
    }
    catch (CommandFailedException & commandFailedException){
        NK_last_command_status = commandFailedException.last_command_status;
    }
    catch (LibraryException & libraryException){
        NK_last_command_status = libraryException.exception_id();
    }
    catch (const InvalidCRCReceived &invalidCRCException){
      ;
    }
    catch (const DeviceCommunicationException &deviceException){
        NK_last_command_status = 256-deviceException.getType();
    }
    return NK_last_command_status;
}


#ifdef __cplusplus
extern "C" {
#endif

	NK_C_API uint8_t NK_get_last_command_status() {
		auto _copy = NK_last_command_status;
		NK_last_command_status = 0;
		return _copy;
	}

	NK_C_API int NK_login(const char *device_model) {
		auto m = NitrokeyManager::instance();
		try {
			NK_last_command_status = 0;
			return m->connect(device_model);
		}
		catch (CommandFailedException & commandFailedException) {
			NK_last_command_status = commandFailedException.last_command_status;
			return commandFailedException.last_command_status;
		}
    catch (const DeviceCommunicationException &deviceException){
      NK_last_command_status = 256-deviceException.getType();
      cerr << deviceException.what() << endl;
      return 0;
    }
		catch (std::runtime_error &e) {
			cerr << e.what() << endl;
			return 0;
		}
		return 0;
	}

        NK_C_API int NK_login_enum(NK_device_model device_model) {
                const char *model_string;
                switch (device_model) {
                    case NK_PRO:
                        model_string = "P";
                        break;
                    case NK_STORAGE:
                        model_string = "S";
                        break;
                    case NK_DISCONNECTED:
                    default:
                        /* no such enum value -- return error code */
                        return 0;
                }
                return NK_login(model_string);
        }

	NK_C_API int NK_logout() {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->disconnect();
		});
	}

	NK_C_API int NK_first_authenticate(const char* admin_password, const char* admin_temporary_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			return m->first_authenticate(admin_password, admin_temporary_password);
		});
	}


	NK_C_API int NK_user_authenticate(const char* user_password, const char* user_temporary_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->user_authenticate(user_password, user_temporary_password);
		});
	}

	NK_C_API int NK_factory_reset(const char* admin_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->factory_reset(admin_password);
		});
	}
	NK_C_API int NK_build_aes_key(const char* admin_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->build_aes_key(admin_password);
		});
	}

	NK_C_API int NK_unlock_user_password(const char *admin_password, const char *new_user_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->unlock_user_password(admin_password, new_user_password);
		});
	}

	NK_C_API int NK_write_config(uint8_t numlock, uint8_t capslock, uint8_t scrolllock, bool enable_user_password,
		bool delete_user_password,
		const char *admin_temporary_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			return m->write_config(numlock, capslock, scrolllock, enable_user_password, delete_user_password, admin_temporary_password);
		});
	}


	NK_C_API uint8_t* NK_read_config() {
		auto m = NitrokeyManager::instance();
		return get_with_array_result([&]() {
			auto v = m->read_config();
			return duplicate_vector_and_clear(v);
		});
	}


	NK_C_API enum NK_device_model NK_get_device_model() {
		auto m = NitrokeyManager::instance();
		try {
			auto model = m->get_connected_device_model();
			switch (model) {
				case DeviceModel::PRO:
				    return NK_PRO;
				case DeviceModel::STORAGE:
				    return NK_STORAGE;
				default:
				    /* unknown or not connected device */
				    return NK_device_model::NK_DISCONNECTED;
			}
		} catch (const DeviceNotConnected& e) {
			return NK_device_model::NK_DISCONNECTED;
		}
}


	void clear_string(std::string &s) {
		std::fill(s.begin(), s.end(), ' ');
	}


	NK_C_API char * NK_status() {
		auto m = NitrokeyManager::instance();
		return get_with_string_result([&]() {
			string && s = m->get_status_as_string();
			char * rs = strndup(s.c_str(), MAXIMUM_STR_REPLY_LENGTH);
			clear_string(s);
			return rs;
		});
	}

	NK_C_API char * NK_device_serial_number() {
		auto m = NitrokeyManager::instance();
		return get_with_string_result([&]() {
			string && s = m->get_serial_number();
			char * rs = strndup(s.c_str(), max_string_field_length);
			clear_string(s);
			return rs;
		});
	}

	NK_C_API char * NK_get_hotp_code(uint8_t slot_number) {
		return NK_get_hotp_code_PIN(slot_number, "");
	}

	NK_C_API char * NK_get_hotp_code_PIN(uint8_t slot_number, const char *user_temporary_password) {
		auto m = NitrokeyManager::instance();
		return get_with_string_result([&]() {
			string && s = m->get_HOTP_code(slot_number, user_temporary_password);
			char * rs = strndup(s.c_str(), max_string_field_length);
			clear_string(s);
			return rs;
		});
	}

	NK_C_API char * NK_get_totp_code(uint8_t slot_number, uint64_t challenge, uint64_t last_totp_time,
		uint8_t last_interval) {
		return NK_get_totp_code_PIN(slot_number, challenge, last_totp_time, last_interval, "");
	}

	NK_C_API char * NK_get_totp_code_PIN(uint8_t slot_number, uint64_t challenge, uint64_t last_totp_time,
		uint8_t last_interval, const char *user_temporary_password) {
		auto m = NitrokeyManager::instance();
		return get_with_string_result([&]() {
			string && s = m->get_TOTP_code(slot_number, challenge, last_totp_time, last_interval, user_temporary_password);
			char * rs = strndup(s.c_str(), max_string_field_length);
			clear_string(s);
			return rs;
		});
	}

	NK_C_API int NK_erase_hotp_slot(uint8_t slot_number, const char *temporary_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&] {
			m->erase_hotp_slot(slot_number, temporary_password);
		});
	}

	NK_C_API int NK_erase_totp_slot(uint8_t slot_number, const char *temporary_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&] {
			m->erase_totp_slot(slot_number, temporary_password);
		});
	}

	NK_C_API int NK_write_hotp_slot(uint8_t slot_number, const char *slot_name, const char *secret, uint64_t hotp_counter,
		bool use_8_digits, bool use_enter, bool use_tokenID, const char *token_ID,
		const char *temporary_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&] {
			m->write_HOTP_slot(slot_number, slot_name, secret, hotp_counter, use_8_digits, use_enter, use_tokenID, token_ID,
				temporary_password);
		});
	}

	NK_C_API int NK_write_totp_slot(uint8_t slot_number, const char *slot_name, const char *secret, uint16_t time_window,
		bool use_8_digits, bool use_enter, bool use_tokenID, const char *token_ID,
		const char *temporary_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&] {
			m->write_TOTP_slot(slot_number, slot_name, secret, time_window, use_8_digits, use_enter, use_tokenID, token_ID,
				temporary_password);
		});
	}

	NK_C_API char* NK_get_totp_slot_name(uint8_t slot_number) {
		auto m = NitrokeyManager::instance();
		return get_with_string_result([&]() {
			const auto slot_name = m->get_totp_slot_name(slot_number);
			return slot_name;
		});
	}
	NK_C_API char* NK_get_hotp_slot_name(uint8_t slot_number) {
		auto m = NitrokeyManager::instance();
		return get_with_string_result([&]() {
			const auto slot_name = m->get_hotp_slot_name(slot_number);
			return slot_name;
		});
	}

	NK_C_API void NK_set_debug(bool state) {
		auto m = NitrokeyManager::instance();
		m->set_debug(state);
	}


	NK_C_API void NK_set_debug_level(const int level) {
		auto m = NitrokeyManager::instance();
		m->set_loglevel(level);
	}

	NK_C_API unsigned int NK_get_major_library_version() {
		return get_major_library_version();
	}

	NK_C_API unsigned int NK_get_minor_library_version() {
		return get_minor_library_version();
	}

	NK_C_API const char* NK_get_library_version() {
		return get_library_version();
	}

	NK_C_API int NK_totp_set_time(uint64_t time) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->set_time(time);
		});
	}

	NK_C_API int NK_totp_set_time_soft(uint64_t time) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->set_time_soft(time);
		});
        }

	NK_C_API int NK_totp_get_time() {
	  return 0;
	}

	NK_C_API int NK_change_admin_PIN(const char *current_PIN, const char *new_PIN) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->change_admin_PIN(current_PIN, new_PIN);
		});
	}

	NK_C_API int NK_change_user_PIN(const char *current_PIN, const char *new_PIN) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->change_user_PIN(current_PIN, new_PIN);
		});
	}

	NK_C_API int NK_enable_password_safe(const char *user_pin) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->enable_password_safe(user_pin);
		});
	}
	NK_C_API uint8_t * NK_get_password_safe_slot_status() {
		auto m = NitrokeyManager::instance();
		return get_with_array_result([&]() {
			auto slot_status = m->get_password_safe_slot_status();
			return duplicate_vector_and_clear(slot_status);
		});

	}

	NK_C_API uint8_t NK_get_user_retry_count() {
		auto m = NitrokeyManager::instance();
		return get_with_result([&]() {
			return m->get_user_retry_count();
		});
	}

	NK_C_API uint8_t NK_get_admin_retry_count() {
		auto m = NitrokeyManager::instance();
		return get_with_result([&]() {
			return m->get_admin_retry_count();
		});
	}

	NK_C_API int NK_lock_device() {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->lock_device();
		});
	}

	NK_C_API char *NK_get_password_safe_slot_name(uint8_t slot_number) {
		auto m = NitrokeyManager::instance();
		return get_with_string_result([&]() {
			return m->get_password_safe_slot_name(slot_number);
		});
	}

	NK_C_API char *NK_get_password_safe_slot_login(uint8_t slot_number) {
		auto m = NitrokeyManager::instance();
		return get_with_string_result([&]() {
			return m->get_password_safe_slot_login(slot_number);
		});
	}
	NK_C_API char *NK_get_password_safe_slot_password(uint8_t slot_number) {
		auto m = NitrokeyManager::instance();
		return get_with_string_result([&]() {
			return m->get_password_safe_slot_password(slot_number);
		});
	}
	NK_C_API int NK_write_password_safe_slot(uint8_t slot_number, const char *slot_name, const char *slot_login,
		const char *slot_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->write_password_safe_slot(slot_number, slot_name, slot_login, slot_password);
		});
	}

	NK_C_API int NK_erase_password_safe_slot(uint8_t slot_number) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->erase_password_safe_slot(slot_number);
		});
	}

	NK_C_API int NK_is_AES_supported(const char *user_password) {
		auto m = NitrokeyManager::instance();
		return get_with_result([&]() {
			return (uint8_t)m->is_AES_supported(user_password);
		});
	}

	NK_C_API int NK_login_auto() {
		auto m = NitrokeyManager::instance();
		return get_with_result([&]() {
			return (uint8_t)m->connect();
		});
	}

	// storage commands

	NK_C_API int NK_send_startup(uint64_t seconds_from_epoch) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->send_startup(seconds_from_epoch);
		});
	}

	NK_C_API int NK_unlock_encrypted_volume(const char* user_pin) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->unlock_encrypted_volume(user_pin);
		});
	}

	NK_C_API int NK_lock_encrypted_volume() {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->lock_encrypted_volume();
		});
	}

	NK_C_API int NK_unlock_hidden_volume(const char* hidden_volume_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->unlock_hidden_volume(hidden_volume_password);
		});
	}

	NK_C_API int NK_lock_hidden_volume() {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->lock_hidden_volume();
		});
	}

	NK_C_API int NK_create_hidden_volume(uint8_t slot_nr, uint8_t start_percent, uint8_t end_percent,
		const char *hidden_volume_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->create_hidden_volume(slot_nr, start_percent, end_percent,
				hidden_volume_password);
		});
	}

	NK_C_API int NK_set_unencrypted_read_only(const char *user_pin) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->set_unencrypted_read_only(user_pin);
		});
	}

	NK_C_API int NK_set_unencrypted_read_write(const char *user_pin) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->set_unencrypted_read_write(user_pin);
		});
	}

	NK_C_API int NK_set_unencrypted_read_only_admin(const char *admin_pin) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->set_unencrypted_read_only_admin(admin_pin);
		});
	}

	NK_C_API int NK_set_unencrypted_read_write_admin(const char *admin_pin) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->set_unencrypted_read_write_admin(admin_pin);
		});
	}

	NK_C_API int NK_set_encrypted_read_only(const char* admin_pin) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->set_encrypted_volume_read_only(admin_pin);
		});
	}

	NK_C_API int NK_set_encrypted_read_write(const char* admin_pin) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->set_encrypted_volume_read_write(admin_pin);
		});
	}

	NK_C_API int NK_export_firmware(const char* admin_pin) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->export_firmware(admin_pin);
		});
	}

	NK_C_API int NK_clear_new_sd_card_warning(const char* admin_pin) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->clear_new_sd_card_warning(admin_pin);
		});
	}

	NK_C_API int NK_fill_SD_card_with_random_data(const char* admin_pin) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->fill_SD_card_with_random_data(admin_pin);
		});
	}

	NK_C_API int NK_change_update_password(const char* current_update_password,
		const char* new_update_password) {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->change_update_password(current_update_password, new_update_password);
		});
	}

	NK_C_API int NK_enable_firmware_update(const char* update_password){
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			m->enable_firmware_update(update_password);
		});
	}

	NK_C_API char* NK_get_status_storage_as_string() {
		auto m = NitrokeyManager::instance();
		return get_with_string_result([&]() {
			return m->get_status_storage_as_string();
		});
	}

	NK_C_API int NK_get_status_storage(NK_storage_status* out) {
		if (out == nullptr) {
			return -1;
		}
		auto m = NitrokeyManager::instance();
		auto result = get_with_status([&]() {
			return m->get_status_storage();
		}, proto::stick20::DeviceConfigurationResponsePacket::ResponsePayload());
		auto error_code = std::get<0>(result);
		if (error_code != 0) {
			return error_code;
		}

		auto status = std::get<1>(result);
		out->unencrypted_volume_read_only = status.ReadWriteFlagUncryptedVolume_u8 != 0;
		out->unencrypted_volume_active = status.VolumeActiceFlag_st.unencrypted;
		out->encrypted_volume_read_only = status.ReadWriteFlagCryptedVolume_u8 != 0;
		out->encrypted_volume_active = status.VolumeActiceFlag_st.encrypted;
		out->hidden_volume_read_only = status.ReadWriteFlagHiddenVolume_u8 != 0;
		out->hidden_volume_active = status.VolumeActiceFlag_st.hidden;
		out->firmware_version_major = status.versionInfo.major;
		out->firmware_version_minor = status.versionInfo.minor;
		out->firmware_locked = status.FirmwareLocked_u8 != 0;
		out->serial_number_sd_card = status.ActiveSD_CardID_u32;
		out->serial_number_smart_card = status.ActiveSmartCardID_u32;
		out->user_retry_count = status.UserPwRetryCount;
		out->admin_retry_count = status.AdminPwRetryCount;
		out->new_sd_card_found = status.NewSDCardFound_st.NewCard;
		out->filled_with_random = (status.SDFillWithRandomChars_u8 & 0x01) != 0;
		out->stick_initialized = status.StickKeysNotInitiated == 0;
		return 0;
	}

  NK_C_API int NK_get_storage_production_info(NK_storage_ProductionTest * out){
    if (out == nullptr) {
      return -1;
    }
    auto m = NitrokeyManager::instance();
    auto result = get_with_status([&]() {
      return m->production_info();
    }, proto::stick20::ProductionTest::ResponsePayload());

		auto error_code = std::get<0>(result);
		if (error_code != 0) {
			return error_code;
		}

		stick20::ProductionTest::ResponsePayload status = std::get<1>(result);
		// Cannot use memcpy without declaring C API struct packed
    // (which is not parsed by Python's CFFI apparently), hence the manual way.
#define a(x) out->x = status.x;
		 a(FirmwareVersion_au8[0]);
		 a(FirmwareVersion_au8[1]);
		 a(FirmwareVersionInternal_u8);
		 a(SD_Card_Size_u8);
		 a(CPU_CardID_u32);
		 a(SmartCardID_u32);
		 a(SD_CardID_u32);
		 a(SC_UserPwRetryCount);
		 a(SC_AdminPwRetryCount);
		 a(SD_Card_ManufacturingYear_u8);
		 a(SD_Card_ManufacturingMonth_u8);
		 a(SD_Card_OEM_u16);
		 a(SD_WriteSpeed_u16);
		 a(SD_Card_Manufacturer_u8);
#undef a
		return 0;
  }

	NK_C_API int NK_get_SD_usage_data(struct NK_SD_usage_data* out) {
		if (out == nullptr)
			return -1;
		auto m = NitrokeyManager::instance();
		auto result = get_with_status([&]() {
			return m->get_SD_usage_data();
		}, std::make_pair<uint8_t, uint8_t>(0, 0));
		auto error_code = std::get<0>(result);
		if (error_code != 0)
			return error_code;

		auto data = std::get<1>(result);
		out->write_level_min = std::get<0>(data);
		out->write_level_max = std::get<1>(data);

		return 0;
	}

NK_C_API char* NK_get_SD_usage_data_as_string() {
		auto m = NitrokeyManager::instance();
		return get_with_string_result([&]() {
			return m->get_SD_usage_data_as_string();
		});
	}

	NK_C_API int NK_get_progress_bar_value() {
		auto m = NitrokeyManager::instance();
		return std::get<1>(get_with_status([&]() {
			return m->get_progress_bar_value();
		}, -2));
	}

	NK_C_API int NK_get_major_firmware_version() {
		auto m = NitrokeyManager::instance();
		return get_with_result([&]() {
			return m->get_major_firmware_version();
		});
	}

  NK_C_API int NK_get_minor_firmware_version() {
		auto m = NitrokeyManager::instance();
		return get_with_result([&]() {
			return m->get_minor_firmware_version();
		});
	}

  NK_C_API int NK_set_unencrypted_volume_rorw_pin_type_user() {
		auto m = NitrokeyManager::instance();
		return get_with_result([&]() {
			return m->set_unencrypted_volume_rorw_pin_type_user() ? 1 : 0;
		});
	}

	NK_C_API char* NK_list_devices_by_cpuID() {
		auto nm = NitrokeyManager::instance();
		return get_with_string_result([&]() {
			auto v = nm->list_devices_by_cpuID();
			std::string res;
			for (const auto a : v){
				res += a+";";
			}
			if (res.size()>0) res.pop_back(); // remove last delimiter char
			return strndup(res.c_str(), MAXIMUM_STR_REPLY_LENGTH);
		});
	}

	bool copy_device_info(const DeviceInfo& source, NK_device_info* target) {
		switch (source.m_deviceModel) {
		case DeviceModel::PRO:
			target->model = NK_PRO;
			break;
		case DeviceModel::STORAGE:
			target->model = NK_STORAGE;
			break;
		default:
			return false;
		}

		target->path = strndup(source.m_path.c_str(), MAXIMUM_STR_REPLY_LENGTH);
		target->serial_number = strndup(source.m_serialNumber.c_str(), MAXIMUM_STR_REPLY_LENGTH);
		target->next = nullptr;

		return target->path && target->serial_number;
	}

	NK_C_API struct NK_device_info* NK_list_devices() {
		auto nm = NitrokeyManager::instance();
		return get_with_result([&]() -> NK_device_info* {
			auto v = nm->list_devices();
			if (v.empty())
				return nullptr;

			auto result = new NK_device_info();
			auto ptr = result;
			auto first = v.begin();
			if (!copy_device_info(*first, ptr)) {
				NK_free_device_info(result);
				return nullptr;
			}
			v.erase(first);

			for (auto& info : v) {
				ptr->next = new NK_device_info();
				ptr = ptr->next;

				if (!copy_device_info(info, ptr)) {
					NK_free_device_info(result);
					return nullptr;
				}
			}
			return result;
		});
	}

	NK_C_API void NK_free_device_info(struct NK_device_info* device_info) {
		if (!device_info)
			return;

		if (device_info->next)
			NK_free_device_info(device_info->next);

		free(device_info->path);
		free(device_info->serial_number);
		delete device_info;
	}

	NK_C_API int NK_connect_with_ID(const char* id) {
		auto m = NitrokeyManager::instance();
		return get_with_result([&]() {
			return m->connect_with_ID(id) ? 1 : 0;
		});
	}

	NK_C_API int NK_connect_with_path(const char* path) {
		auto m = NitrokeyManager::instance();
		return get_with_result([&]() {
			return m->connect_with_path(path) ? 1 : 0;
		});
	 }


	NK_C_API int NK_wink() {
		auto m = NitrokeyManager::instance();
		return get_without_result([&]() {
			return m->wink();
		});
	}

#ifdef __cplusplus
}
#endif