From c79050aa44b8836d836c5dd22a383a073c28b74b Mon Sep 17 00:00:00 2001 From: nicoo Date: Wed, 12 Feb 2020 13:42:22 +0100 Subject: Import upstream release 1.3.0 Closes: #951184 --- fuzz/fuzz_bio.c | 755 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 755 insertions(+) create mode 100644 fuzz/fuzz_bio.c (limited to 'fuzz/fuzz_bio.c') diff --git a/fuzz/fuzz_bio.c b/fuzz/fuzz_bio.c new file mode 100644 index 0000000..f1596a7 --- /dev/null +++ b/fuzz/fuzz_bio.c @@ -0,0 +1,755 @@ +/* + * Copyright (c) 2019 Yubico AB. All rights reserved. + * Use of this source code is governed by a BSD-style + * license that can be found in the LICENSE file. + */ + +#include +#include +#include +#include +#include + +#include "mutator_aux.h" +#include "fido.h" +#include "fido/bio.h" + +#include "../openbsd-compat/openbsd-compat.h" + +#define TAG_PIN 0x01 +#define TAG_NAME 0x02 +#define TAG_SEED 0x03 +#define TAG_ID 0x04 +#define TAG_INFO_WIRE_DATA 0x05 +#define TAG_ENROLL_WIRE_DATA 0x06 +#define TAG_LIST_WIRE_DATA 0x07 +#define TAG_SET_NAME_WIRE_DATA 0x08 +#define TAG_REMOVE_WIRE_DATA 0x09 + +/* Parameter set defining a FIDO2 credential management operation. */ +struct param { + char pin[MAXSTR]; + char name[MAXSTR]; + int seed; + struct blob id; + struct blob info_wire_data; + struct blob enroll_wire_data; + struct blob list_wire_data; + struct blob set_name_wire_data; + struct blob remove_wire_data; +}; + +/* Example parameters. */ +static const uint8_t dummy_id[] = { 0x5e, 0xd2, }; +static const char dummy_pin[] = "3Q;I){TAx"; +static const char dummy_name[] = "finger1"; + +/* + * Collection of HID reports from an authenticator issued with a FIDO2 + * 'getFingerprintSensorInfo' bio enrollment command. + */ +static const uint8_t dummy_info_wire_data[] = { + 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0xf0, + 0x08, 0xc1, 0x8f, 0x76, 0x4b, 0x8f, 0xa9, 0x00, + 0x10, 0x00, 0x04, 0x02, 0x00, 0x04, 0x06, 0x05, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x10, 0x00, 0x04, 0x90, 0x00, 0x06, 0x00, + 0xa2, 0x02, 0x01, 0x03, 0x04, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; + +/* + * Collection of HID reports from an authenticator issued with FIDO2 + * 'enrollBegin' + 'enrollCaptureNextSample' bio enrollment commands. + */ +static const uint8_t dummy_enroll_wire_data[] = { + 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0x06, + 0xb4, 0xba, 0x2e, 0xb3, 0x88, 0x24, 0x38, 0x00, + 0x0a, 0x00, 0x05, 0x02, 0x00, 0x04, 0x06, 0x05, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x0a, 0x00, 0x05, 0x90, 0x00, 0x51, 0x00, + 0xa1, 0x01, 0xa5, 0x01, 0x02, 0x03, 0x38, 0x18, + 0x20, 0x01, 0x21, 0x58, 0x20, 0xc9, 0x12, 0x01, + 0xab, 0x88, 0xd7, 0x0a, 0x24, 0xdd, 0xdc, 0xde, + 0x16, 0x27, 0x50, 0x77, 0x37, 0x06, 0xd3, 0x48, + 0xe6, 0xf9, 0xdb, 0xaa, 0x10, 0x83, 0x81, 0xac, + 0x13, 0x3c, 0xf9, 0x77, 0x2d, 0x22, 0x58, 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0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x0a, 0x00, 0x05, 0xbb, 0x00, 0x01, 0x02, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x0a, 0x00, 0x05, 0x90, 0x00, 0x06, 0x00, + 0xa2, 0x05, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; + +/* + * Collection of HID reports from an authenticator issued with a FIDO2 + * 'enumerateEnrollments' bio enrollment command. + */ +static const uint8_t dummy_list_wire_data[] = { + 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0xae, + 0x21, 0x88, 0x51, 0x09, 0x6f, 0xd7, 0xbb, 0x00, + 0x10, 0x00, 0x0f, 0x02, 0x00, 0x04, 0x06, 0x05, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x10, 0x00, 0x0f, 0x90, 0x00, 0x51, 0x00, + 0xa1, 0x01, 0xa5, 0x01, 0x02, 0x03, 0x38, 0x18, + 0x20, 0x01, 0x21, 0x58, 0x20, 0x5a, 0x70, 0x63, + 0x11, 0x5b, 0xa6, 0xe1, 0x8e, 0x4a, 0xb0, 0x75, + 0xe7, 0xfd, 0x39, 0x26, 0x29, 0xed, 0x69, 0xb0, + 0xc1, 0x1f, 0xa5, 0x7d, 0xcb, 0x64, 0x1e, 0x7c, + 0x9f, 0x60, 0x5e, 0xb2, 0xf8, 0x22, 0x58, 0x20, + 0xec, 0xe9, 0x1b, 0x11, 0xac, 0x2a, 0x0d, 0xd5, + 0x00, 0x10, 0x00, 0x0f, 0x00, 0x3b, 0x9f, 0xba, + 0x0f, 0x25, 0xd5, 0x24, 0x33, 0x4c, 0x5d, 0x0f, + 0x63, 0xbf, 0xf1, 0xf3, 0x64, 0x55, 0x78, 0x1a, + 0x59, 0x6e, 0x65, 0x59, 0xfc, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x10, 0x00, 0x0f, 0x90, 0x00, 0x14, 0x00, + 0xa1, 0x02, 0x50, 0xb9, 0x31, 0x34, 0xe2, 0x71, + 0x6a, 0x8e, 0xa3, 0x60, 0xec, 0x5e, 0xd2, 0x13, + 0x2e, 0x19, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x10, 0x00, 0x0f, 0x90, 0x00, 0x2e, 0x00, + 0xa1, 0x07, 0x83, 0xa2, 0x01, 0x42, 0xce, 0xa3, + 0x02, 0x67, 0x66, 0x69, 0x6e, 0x67, 0x65, 0x72, + 0x31, 0xa2, 0x01, 0x42, 0xbf, 0x5e, 0x02, 0x67, + 0x66, 0x69, 0x6e, 0x67, 0x65, 0x72, 0x32, 0xa2, + 0x01, 0x42, 0x5e, 0xd2, 0x02, 0x67, 0x66, 0x69, + 0x6e, 0x67, 0x65, 0x72, 0x33, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; + +/* + * Collection of HID reports from an authenticator issued with a FIDO2 + * 'setFriendlyName' bio enrollment command. + */ +static const uint8_t dummy_set_name_wire_data[] = { + 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0xac, + 0x48, 0xfd, 0xbd, 0xdd, 0x36, 0x24, 0x4d, 0x00, + 0x10, 0x00, 0x10, 0x02, 0x00, 0x04, 0x06, 0x05, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x10, 0x00, 0x10, 0x90, 0x00, 0x51, 0x00, + 0xa1, 0x01, 0xa5, 0x01, 0x02, 0x03, 0x38, 0x18, + 0x20, 0x01, 0x21, 0x58, 0x20, 0x5a, 0x70, 0x63, + 0x11, 0x5b, 0xa6, 0xe1, 0x8e, 0x4a, 0xb0, 0x75, + 0xe7, 0xfd, 0x39, 0x26, 0x29, 0xed, 0x69, 0xb0, + 0xc1, 0x1f, 0xa5, 0x7d, 0xcb, 0x64, 0x1e, 0x7c, + 0x9f, 0x60, 0x5e, 0xb2, 0xf8, 0x22, 0x58, 0x20, + 0xec, 0xe9, 0x1b, 0x11, 0xac, 0x2a, 0x0d, 0xd5, + 0x00, 0x10, 0x00, 0x10, 0x00, 0x3b, 0x9f, 0xba, + 0x0f, 0x25, 0xd5, 0x24, 0x33, 0x4c, 0x5d, 0x0f, + 0x63, 0xbf, 0xf1, 0xf3, 0x64, 0x55, 0x78, 0x1a, + 0x59, 0x6e, 0x65, 0x59, 0xfc, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x10, 0x00, 0x10, 0x90, 0x00, 0x14, 0x00, + 0xa1, 0x02, 0x50, 0x40, 0x95, 0xf3, 0xcb, 0xae, + 0xf2, 0x8d, 0xd9, 0xe0, 0xe0, 0x8a, 0xbd, 0xc3, + 0x03, 0x58, 0x49, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x10, 0x00, 0x10, 0x90, 0x00, 0x01, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; + +/* + * Collection of HID reports from an authenticator issued with a FIDO2 + * 'removeEnrollment' bio enrollment command. + */ +static const uint8_t dummy_remove_wire_data[] = { + 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0x4b, + 0x24, 0xde, 0xd9, 0x06, 0x57, 0x1a, 0xbd, 0x00, + 0x10, 0x00, 0x15, 0x02, 0x00, 0x04, 0x06, 0x05, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x10, 0x00, 0x15, 0x90, 0x00, 0x51, 0x00, + 0xa1, 0x01, 0xa5, 0x01, 0x02, 0x03, 0x38, 0x18, + 0x20, 0x01, 0x21, 0x58, 0x20, 0x5a, 0x70, 0x63, + 0x11, 0x5b, 0xa6, 0xe1, 0x8e, 0x4a, 0xb0, 0x75, + 0xe7, 0xfd, 0x39, 0x26, 0x29, 0xed, 0x69, 0xb0, + 0xc1, 0x1f, 0xa5, 0x7d, 0xcb, 0x64, 0x1e, 0x7c, + 0x9f, 0x60, 0x5e, 0xb2, 0xf8, 0x22, 0x58, 0x20, + 0xec, 0xe9, 0x1b, 0x11, 0xac, 0x2a, 0x0d, 0xd5, + 0x00, 0x10, 0x00, 0x15, 0x00, 0x3b, 0x9f, 0xba, + 0x0f, 0x25, 0xd5, 0x24, 0x33, 0x4c, 0x5d, 0x0f, + 0x63, 0xbf, 0xf1, 0xf3, 0x64, 0x55, 0x78, 0x1a, + 0x59, 0x6e, 0x65, 0x59, 0xfc, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x10, 0x00, 0x15, 0x90, 0x00, 0x14, 0x00, + 0xa1, 0x02, 0x50, 0xb0, 0xd0, 0x71, 0x2f, 0xa7, + 0x8b, 0x89, 0xbd, 0xca, 0xa4, 0x1e, 0x6c, 0x43, + 0xa1, 0x71, 0x48, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x10, 0x00, 0x15, 0x90, 0x00, 0x01, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, +}; + +int LLVMFuzzerTestOneInput(const uint8_t *, size_t); +size_t LLVMFuzzerCustomMutator(uint8_t *, size_t, size_t, unsigned int); + +static int +unpack(const uint8_t *ptr, size_t len, struct param *p) NO_MSAN +{ + uint8_t **pp = (void *)&ptr; + + if (unpack_string(TAG_PIN, pp, &len, p->pin) < 0 || + unpack_string(TAG_NAME, pp, &len, p->name) < 0 || + unpack_int(TAG_SEED, pp, &len, &p->seed) < 0 || + unpack_blob(TAG_ID, pp, &len, &p->id) < 0 || + unpack_blob(TAG_INFO_WIRE_DATA, pp, &len, &p->info_wire_data) < 0 || + unpack_blob(TAG_ENROLL_WIRE_DATA, pp, &len, &p->enroll_wire_data) < 0 || + unpack_blob(TAG_LIST_WIRE_DATA, pp, &len, &p->list_wire_data) < 0 || + unpack_blob(TAG_SET_NAME_WIRE_DATA, pp, &len, &p->set_name_wire_data) < 0 || + unpack_blob(TAG_REMOVE_WIRE_DATA, pp, &len, &p->remove_wire_data) < 0) + return (-1); + + return (0); +} + +static size_t +pack(uint8_t *ptr, size_t len, const struct param *p) +{ + const size_t max = len; + + if (pack_string(TAG_PIN, &ptr, &len, p->pin) < 0 || + pack_string(TAG_NAME, &ptr, &len, p->name) < 0 || + pack_int(TAG_SEED, &ptr, &len, p->seed) < 0 || + pack_blob(TAG_ID, &ptr, &len, &p->id) < 0 || + pack_blob(TAG_INFO_WIRE_DATA, &ptr, &len, &p->info_wire_data) < 0 || + pack_blob(TAG_ENROLL_WIRE_DATA, &ptr, &len, &p->enroll_wire_data) < 0 || + pack_blob(TAG_LIST_WIRE_DATA, &ptr, &len, &p->list_wire_data) < 0 || + pack_blob(TAG_SET_NAME_WIRE_DATA, &ptr, &len, &p->set_name_wire_data) < 0 || + pack_blob(TAG_REMOVE_WIRE_DATA, &ptr, &len, &p->remove_wire_data) < 0) + return (0); + + return (max - len); +} + +static fido_dev_t * +prepare_dev() +{ + fido_dev_t *dev; + fido_dev_io_t io; + + io.open = dev_open; + io.close = dev_close; + io.read = dev_read; + io.write = dev_write; + + if ((dev = fido_dev_new()) == NULL || fido_dev_set_io_functions(dev, + &io) != FIDO_OK || fido_dev_open(dev, "nodev") != FIDO_OK) { + fido_dev_free(&dev); + return (NULL); + } + + return (dev); +} + +static void +get_info(struct param *p) +{ + fido_dev_t *dev = NULL; + fido_bio_info_t *i = NULL; + uint8_t type; + uint8_t max_samples; + + set_wire_data(p->info_wire_data.body, p->info_wire_data.len); + + if ((dev = prepare_dev()) == NULL || (i = fido_bio_info_new()) == NULL) + goto done; + + fido_bio_dev_get_info(dev, i); + + type = fido_bio_info_type(i); + max_samples = fido_bio_info_max_samples(i); + consume(&type, sizeof(type)); + consume(&max_samples, sizeof(max_samples)); + +done: + if (dev) + fido_dev_close(dev); + + fido_dev_free(&dev); + fido_bio_info_free(&i); +} + +static void +consume_template(const fido_bio_template_t *t) +{ + consume(fido_bio_template_name(t), xstrlen(fido_bio_template_name(t))); + consume(fido_bio_template_id_ptr(t), fido_bio_template_id_len(t)); +} + +static void +consume_enroll(fido_bio_enroll_t *e) +{ + uint8_t last_status; + uint8_t remaining_samples; + + last_status = fido_bio_enroll_last_status(e); + remaining_samples = fido_bio_enroll_remaining_samples(e); + consume(&last_status, sizeof(last_status)); + consume(&remaining_samples, sizeof(remaining_samples)); +} + +static void +enroll(struct param *p) +{ + fido_dev_t *dev = NULL; + fido_bio_template_t *t = NULL; + fido_bio_enroll_t *e = NULL; + size_t cnt = 0; + + set_wire_data(p->enroll_wire_data.body, p->enroll_wire_data.len); + + if ((dev = prepare_dev()) == NULL || + (t = fido_bio_template_new()) == NULL || + (e = fido_bio_enroll_new()) == NULL) + goto done; + + fido_bio_dev_enroll_begin(dev, t, e, p->seed, p->pin); + + consume_template(t); + consume_enroll(e); + + while (fido_bio_enroll_remaining_samples(e) > 0 && cnt++ < 5) { + fido_bio_dev_enroll_continue(dev, t, e, p->seed); + consume_template(t); + consume_enroll(e); + } + +done: + if (dev) + fido_dev_close(dev); + + fido_dev_free(&dev); + fido_bio_template_free(&t); + fido_bio_enroll_free(&e); +} + +static void +list(struct param *p) +{ + fido_dev_t *dev = NULL; + fido_bio_template_array_t *ta = NULL; + const fido_bio_template_t *t = NULL; + + set_wire_data(p->list_wire_data.body, p->list_wire_data.len); + + if ((dev = prepare_dev()) == NULL || + (ta = fido_bio_template_array_new()) == NULL) + goto done; + + fido_bio_dev_get_template_array(dev, ta, p->pin); + + /* +1 on purpose */ + for (size_t i = 0; i < fido_bio_template_array_count(ta) + 1; i++) + if ((t = fido_bio_template(ta, i)) != NULL) + consume_template(t); + +done: + if (dev) + fido_dev_close(dev); + + fido_dev_free(&dev); + fido_bio_template_array_free(&ta); +} + +static void +set_name(struct param *p) +{ + fido_dev_t *dev = NULL; + fido_bio_template_t *t = NULL; + + set_wire_data(p->set_name_wire_data.body, p->set_name_wire_data.len); + + if ((dev = prepare_dev()) == NULL || + (t = fido_bio_template_new()) == NULL) + goto done; + + fido_bio_template_set_name(t, p->name); + fido_bio_template_set_id(t, p->id.body, p->id.len); + consume_template(t); + + fido_bio_dev_set_template_name(dev, t, p->pin); + +done: + if (dev) + fido_dev_close(dev); + + fido_dev_free(&dev); + fido_bio_template_free(&t); +} + +static void +del(struct param *p) +{ + fido_dev_t *dev = NULL; + fido_bio_template_t *t = NULL; + + set_wire_data(p->remove_wire_data.body, p->remove_wire_data.len); + + if ((dev = prepare_dev()) == NULL || + (t = fido_bio_template_new()) == NULL) + goto done; + + fido_bio_template_set_id(t, p->id.body, p->id.len); + consume_template(t); + + fido_bio_dev_enroll_remove(dev, t, p->pin); + +done: + if (dev) + fido_dev_close(dev); + + fido_dev_free(&dev); + fido_bio_template_free(&t); +} + +int +LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) +{ + struct param p; + + memset(&p, 0, sizeof(p)); + + if (unpack(data, size, &p) < 0) + return (0); + + srandom((unsigned int)p.seed); + + fido_init(0); + + get_info(&p); + enroll(&p); + list(&p); + set_name(&p); + del(&p); + + return (0); +} + +static size_t +pack_dummy(uint8_t *ptr, size_t len) +{ + struct param dummy; + uint8_t blob[32768]; + size_t blob_len; + + memset(&dummy, 0, sizeof(dummy)); + + strlcpy(dummy.pin, dummy_pin, sizeof(dummy.pin)); + strlcpy(dummy.name, dummy_name, sizeof(dummy.name)); + + dummy.info_wire_data.len = sizeof(dummy_info_wire_data); + dummy.enroll_wire_data.len = sizeof(dummy_enroll_wire_data); + dummy.list_wire_data.len = sizeof(dummy_list_wire_data); + dummy.set_name_wire_data.len = sizeof(dummy_set_name_wire_data); + dummy.remove_wire_data.len = sizeof(dummy_remove_wire_data); + dummy.id.len = sizeof(dummy_id); + + memcpy(&dummy.info_wire_data.body, &dummy_info_wire_data, + dummy.info_wire_data.len); + memcpy(&dummy.enroll_wire_data.body, &dummy_enroll_wire_data, + dummy.enroll_wire_data.len); + memcpy(&dummy.list_wire_data.body, &dummy_list_wire_data, + dummy.list_wire_data.len); + memcpy(&dummy.set_name_wire_data.body, &dummy_set_name_wire_data, + dummy.set_name_wire_data.len); + memcpy(&dummy.remove_wire_data.body, &dummy_remove_wire_data, + dummy.remove_wire_data.len); + memcpy(&dummy.id.body, &dummy_id, dummy.id.len); + + blob_len = pack(blob, sizeof(blob), &dummy); + assert(blob_len != 0); + + if (blob_len > len) { + memcpy(ptr, blob, len); + return (len); + } + + memcpy(ptr, blob, blob_len); + + return (blob_len); +} + +size_t +LLVMFuzzerCustomMutator(uint8_t *data, size_t size, size_t maxsize, + unsigned int seed) NO_MSAN +{ + struct param p; + uint8_t blob[16384]; + size_t blob_len; + + memset(&p, 0, sizeof(p)); + + if (unpack(data, size, &p) < 0) + return (pack_dummy(data, maxsize)); + + p.seed = (int)seed; + + mutate_blob(&p.id); + mutate_blob(&p.info_wire_data); + mutate_blob(&p.enroll_wire_data); + mutate_blob(&p.list_wire_data); + mutate_blob(&p.set_name_wire_data); + mutate_blob(&p.remove_wire_data); + + mutate_string(p.pin); + mutate_string(p.name); + + blob_len = pack(blob, sizeof(blob), &p); + + if (blob_len == 0 || blob_len > maxsize) + return (0); + + memcpy(data, blob, blob_len); + + return (blob_len); +} -- cgit v1.2.3