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_mgmt.c | 529 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 529 insertions(+) create mode 100644 fuzz/fuzz_mgmt.c (limited to 'fuzz/fuzz_mgmt.c') diff --git a/fuzz/fuzz_mgmt.c b/fuzz/fuzz_mgmt.c new file mode 100644 index 0000000..741b375 --- /dev/null +++ b/fuzz/fuzz_mgmt.c @@ -0,0 +1,529 @@ +/* + * 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 "../openbsd-compat/openbsd-compat.h" + +#define TAG_PIN1 0x01 +#define TAG_PIN2 0x02 +#define TAG_RESET_WIRE_DATA 0x03 +#define TAG_INFO_WIRE_DATA 0x04 +#define TAG_SET_PIN_WIRE_DATA 0x05 +#define TAG_CHANGE_PIN_WIRE_DATA 0x06 +#define TAG_RETRY_WIRE_DATA 0x07 +#define TAG_SEED 0x08 + +struct param { + char pin1[MAXSTR]; + char pin2[MAXSTR]; + struct blob reset_wire_data; + struct blob info_wire_data; + struct blob set_pin_wire_data; + struct blob change_pin_wire_data; + struct blob retry_wire_data; + int seed; +}; + +/* Example parameters. */ +static const char dummy_pin1[] = "skepp cg0u3;Y.."; +static const char dummy_pin2[] = "bastilha 6rJrfQZI."; + +static const uint8_t dummy_reset_wire_data[] = { + 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0x91, + 0xef, 0xbe, 0x74, 0x39, 0x1a, 0x1c, 0x4a, 0x00, + 0x22, 0x00, 0x01, 0x02, 0x05, 0x02, 0x01, 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, 0x22, 0x00, 0x01, 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, 0x22, 0x00, 0x01, 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, 0x22, 0x00, 0x01, 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, 0x22, 0x00, 0x01, 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, 0x22, 0x00, 0x01, 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, 0x22, 0x00, 0x01, 0xbb, 0x00, 0x01, 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, 0x22, 0x00, 0x01, 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 +}; + +static const uint8_t dummy_info_wire_data[] = { + 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0x80, + 0x43, 0x56, 0x40, 0xb1, 0x4e, 0xd9, 0x2d, 0x00, + 0x22, 0x00, 0x02, 0x02, 0x05, 0x02, 0x01, 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, 0x22, 0x00, 0x02, 0x90, 0x00, 0xb9, 0x00, + 0xa9, 0x01, 0x83, 0x66, 0x55, 0x32, 0x46, 0x5f, + 0x56, 0x32, 0x68, 0x46, 0x49, 0x44, 0x4f, 0x5f, + 0x32, 0x5f, 0x30, 0x6c, 0x46, 0x49, 0x44, 0x4f, + 0x5f, 0x32, 0x5f, 0x31, 0x5f, 0x50, 0x52, 0x45, + 0x02, 0x82, 0x6b, 0x63, 0x72, 0x65, 0x64, 0x50, + 0x72, 0x6f, 0x74, 0x65, 0x63, 0x74, 0x6b, 0x68, + 0x6d, 0x61, 0x63, 0x2d, 0x73, 0x65, 0x63, 0x72, + 0x00, 0x22, 0x00, 0x02, 0x00, 0x65, 0x74, 0x03, + 0x50, 0x19, 0x56, 0xe5, 0xbd, 0xa3, 0x74, 0x45, + 0xf1, 0xa8, 0x14, 0x35, 0x64, 0x03, 0xfd, 0xbc, + 0x18, 0x04, 0xa5, 0x62, 0x72, 0x6b, 0xf5, 0x62, + 0x75, 0x70, 0xf5, 0x64, 0x70, 0x6c, 0x61, 0x74, + 0xf4, 0x69, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, + 0x50, 0x69, 0x6e, 0xf4, 0x75, 0x63, 0x72, 0x65, + 0x64, 0x65, 0x6e, 0x74, 0x69, 0x61, 0x6c, 0x4d, + 0x00, 0x22, 0x00, 0x02, 0x01, 0x67, 0x6d, 0x74, + 0x50, 0x72, 0x65, 0x76, 0x69, 0x65, 0x77, 0xf5, + 0x05, 0x19, 0x04, 0xb0, 0x06, 0x81, 0x01, 0x07, + 0x08, 0x08, 0x18, 0x80, 0x0a, 0x82, 0xa2, 0x63, + 0x61, 0x6c, 0x67, 0x26, 0x64, 0x74, 0x79, 0x70, + 0x65, 0x6a, 0x70, 0x75, 0x62, 0x6c, 0x69, 0x63, + 0x2d, 0x6b, 0x65, 0x79, 0xa2, 0x63, 0x61, 0x6c, + 0x67, 0x27, 0x64, 0x74, 0x79, 0x70, 0x65, 0x6a, + 0x00, 0x22, 0x00, 0x02, 0x02, 0x70, 0x75, 0x62, + 0x6c, 0x69, 0x63, 0x2d, 0x6b, 0x65, 0x79, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; + +static const uint8_t dummy_set_pin_wire_data[] = { + 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0x59, + 0x50, 0x8c, 0x27, 0x14, 0x83, 0x43, 0xd5, 0x00, + 0x22, 0x00, 0x03, 0x02, 0x05, 0x02, 0x01, 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, 0x22, 0x00, 0x03, 0x90, 0x00, 0x51, 0x00, + 0xa1, 0x01, 0xa5, 0x01, 0x02, 0x03, 0x38, 0x18, + 0x20, 0x01, 0x21, 0x58, 0x20, 0x2a, 0xb8, 0x2d, + 0x36, 0x69, 0xab, 0x30, 0x9d, 0xe3, 0x5e, 0x9b, + 0xfb, 0x94, 0xfc, 0x1d, 0x92, 0x95, 0xaf, 0x01, + 0x47, 0xfe, 0x4b, 0x87, 0xe5, 0xcf, 0x3f, 0x05, + 0x0b, 0x39, 0xda, 0x17, 0x49, 0x22, 0x58, 0x20, + 0x15, 0x1b, 0xbe, 0x08, 0x78, 0x60, 0x4d, 0x3c, + 0x00, 0x22, 0x00, 0x03, 0x00, 0x3f, 0xf1, 0x60, + 0xa6, 0xd8, 0xf8, 0xed, 0xce, 0x4a, 0x30, 0x5d, + 0x1a, 0xaf, 0x80, 0xc4, 0x0a, 0xd2, 0x6f, 0x77, + 0x38, 0x12, 0x97, 0xaa, 0xbd, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x22, 0x00, 0x03, 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 +}; + +static const uint8_t dummy_change_pin_wire_data[] = { + 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0x48, + 0xfd, 0xf9, 0xde, 0x28, 0x21, 0x99, 0xd5, 0x00, + 0x22, 0x00, 0x04, 0x02, 0x05, 0x02, 0x01, 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, 0x22, 0x00, 0x04, 0x90, 0x00, 0x51, 0x00, + 0xa1, 0x01, 0xa5, 0x01, 0x02, 0x03, 0x38, 0x18, + 0x20, 0x01, 0x21, 0x58, 0x20, 0x2a, 0xb8, 0x2d, + 0x36, 0x69, 0xab, 0x30, 0x9d, 0xe3, 0x5e, 0x9b, + 0xfb, 0x94, 0xfc, 0x1d, 0x92, 0x95, 0xaf, 0x01, + 0x47, 0xfe, 0x4b, 0x87, 0xe5, 0xcf, 0x3f, 0x05, + 0x0b, 0x39, 0xda, 0x17, 0x49, 0x22, 0x58, 0x20, + 0x15, 0x1b, 0xbe, 0x08, 0x78, 0x60, 0x4d, 0x3c, + 0x00, 0x22, 0x00, 0x04, 0x00, 0x3f, 0xf1, 0x60, + 0xa6, 0xd8, 0xf8, 0xed, 0xce, 0x4a, 0x30, 0x5d, + 0x1a, 0xaf, 0x80, 0xc4, 0x0a, 0xd2, 0x6f, 0x77, + 0x38, 0x12, 0x97, 0xaa, 0xbd, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x22, 0x00, 0x04, 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 +}; + +static const uint8_t dummy_retry_wire_data[] = { + 0xff, 0xff, 0xff, 0xff, 0x86, 0x00, 0x11, 0x7f, + 0xaa, 0x73, 0x3e, 0x95, 0x98, 0xa8, 0x60, 0x00, + 0x22, 0x00, 0x05, 0x02, 0x05, 0x02, 0x01, 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, 0x22, 0x00, 0x05, 0x90, 0x00, 0x04, 0x00, + 0xa1, 0x03, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 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_PIN1, pp, &len, p->pin1) < 0 || + unpack_string(TAG_PIN2, pp, &len, p->pin2) < 0 || + unpack_blob(TAG_RESET_WIRE_DATA, pp, &len, &p->reset_wire_data) < 0 || + unpack_blob(TAG_INFO_WIRE_DATA, pp, &len, &p->info_wire_data) < 0 || + unpack_blob(TAG_SET_PIN_WIRE_DATA, pp, &len, &p->set_pin_wire_data) < 0 || + unpack_blob(TAG_CHANGE_PIN_WIRE_DATA, pp, &len, &p->change_pin_wire_data) < 0 || + unpack_blob(TAG_RETRY_WIRE_DATA, pp, &len, &p->retry_wire_data) < 0 || + unpack_int(TAG_SEED, pp, &len, &p->seed) < 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_PIN1, &ptr, &len, p->pin1) < 0 || + pack_string(TAG_PIN2, &ptr, &len, p->pin2) < 0 || + pack_blob(TAG_RESET_WIRE_DATA, &ptr, &len, &p->reset_wire_data) < 0 || + pack_blob(TAG_INFO_WIRE_DATA, &ptr, &len, &p->info_wire_data) < 0 || + pack_blob(TAG_SET_PIN_WIRE_DATA, &ptr, &len, &p->set_pin_wire_data) < 0 || + pack_blob(TAG_CHANGE_PIN_WIRE_DATA, &ptr, &len, &p->change_pin_wire_data) < 0 || + pack_blob(TAG_RETRY_WIRE_DATA, &ptr, &len, &p->retry_wire_data) < 0 || + pack_int(TAG_SEED, &ptr, &len, p->seed) < 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 +dev_reset(struct param *p) +{ + fido_dev_t *dev; + + set_wire_data(p->reset_wire_data.body, p->reset_wire_data.len); + + if ((dev = prepare_dev()) == NULL) { + return; + } + + fido_dev_reset(dev); + fido_dev_close(dev); + fido_dev_free(&dev); +} + +static void +dev_get_cbor_info(struct param *p) +{ + fido_dev_t *dev; + fido_cbor_info_t *ci; + uint64_t n; + uint8_t proto; + uint8_t major; + uint8_t minor; + uint8_t build; + uint8_t flags; + + set_wire_data(p->info_wire_data.body, p->info_wire_data.len); + + if ((dev = prepare_dev()) == NULL) { + return; + } + + proto = fido_dev_protocol(dev); + major = fido_dev_major(dev); + minor = fido_dev_minor(dev); + build = fido_dev_build(dev); + flags = fido_dev_flags(dev); + + consume(&proto, sizeof(proto)); + consume(&major, sizeof(major)); + consume(&minor, sizeof(minor)); + consume(&build, sizeof(build)); + consume(&flags, sizeof(flags)); + + if ((ci = fido_cbor_info_new()) == NULL) { + fido_dev_close(dev); + fido_dev_free(&dev); + return; + } + + fido_dev_get_cbor_info(dev, ci); + fido_dev_close(dev); + fido_dev_free(&dev); + + for (size_t i = 0; i < fido_cbor_info_versions_len(ci); i++) { + char * const *sa = fido_cbor_info_versions_ptr(ci); + consume(sa[i], strlen(sa[i])); + } + for (size_t i = 0; i < fido_cbor_info_extensions_len(ci); i++) { + char * const *sa = fido_cbor_info_extensions_ptr(ci); + consume(sa[i], strlen(sa[i])); + } + + for (size_t i = 0; i < fido_cbor_info_options_len(ci); i++) { + char * const *sa = fido_cbor_info_options_name_ptr(ci); + const bool *va = fido_cbor_info_options_value_ptr(ci); + consume(sa[i], strlen(sa[i])); + consume(&va[i], sizeof(va[i])); + } + + n = fido_cbor_info_maxmsgsiz(ci); + consume(&n, sizeof(n)); + + consume(fido_cbor_info_aaguid_ptr(ci), fido_cbor_info_aaguid_len(ci)); + consume(fido_cbor_info_protocols_ptr(ci), + fido_cbor_info_protocols_len(ci)); + + fido_cbor_info_free(&ci); +} + +static void +dev_set_pin(struct param *p) +{ + fido_dev_t *dev; + + set_wire_data(p->set_pin_wire_data.body, p->set_pin_wire_data.len); + + if ((dev = prepare_dev()) == NULL) { + return; + } + + fido_dev_set_pin(dev, p->pin1, NULL); + fido_dev_close(dev); + fido_dev_free(&dev); +} + +static void +dev_change_pin(struct param *p) +{ + fido_dev_t *dev; + + set_wire_data(p->change_pin_wire_data.body, p->change_pin_wire_data.len); + + if ((dev = prepare_dev()) == NULL) { + return; + } + + fido_dev_set_pin(dev, p->pin2, p->pin1); + fido_dev_close(dev); + fido_dev_free(&dev); +} + +static void +dev_get_retry_count(struct param *p) +{ + fido_dev_t *dev; + int n; + + set_wire_data(p->retry_wire_data.body, p->retry_wire_data.len); + + if ((dev = prepare_dev()) == NULL) { + return; + } + + fido_dev_get_retry_count(dev, &n); + consume(&n, sizeof(n)); + fido_dev_close(dev); + fido_dev_free(&dev); +} + +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); + + dev_reset(&p); + dev_get_cbor_info(&p); + dev_set_pin(&p); + dev_change_pin(&p); + dev_get_retry_count(&p); + + return (0); +} + +static size_t +pack_dummy(uint8_t *ptr, size_t len) +{ + struct param dummy; + uint8_t blob[16384]; + size_t blob_len; + + memset(&dummy, 0, sizeof(dummy)); + + strlcpy(dummy.pin1, dummy_pin1, sizeof(dummy.pin1)); + strlcpy(dummy.pin2, dummy_pin2, sizeof(dummy.pin2)); + + dummy.reset_wire_data.len = sizeof(dummy_reset_wire_data); + dummy.info_wire_data.len = sizeof(dummy_info_wire_data); + dummy.set_pin_wire_data.len = sizeof(dummy_set_pin_wire_data); + dummy.change_pin_wire_data.len = sizeof(dummy_change_pin_wire_data); + dummy.retry_wire_data.len = sizeof(dummy_retry_wire_data); + + memcpy(&dummy.reset_wire_data.body, &dummy_reset_wire_data, + dummy.reset_wire_data.len); + memcpy(&dummy.info_wire_data.body, &dummy_info_wire_data, + dummy.info_wire_data.len); + memcpy(&dummy.set_pin_wire_data.body, &dummy_set_pin_wire_data, + dummy.set_pin_wire_data.len); + memcpy(&dummy.change_pin_wire_data.body, &dummy_change_pin_wire_data, + dummy.change_pin_wire_data.len); + memcpy(&dummy.retry_wire_data.body, &dummy_retry_wire_data, + dummy.retry_wire_data.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) +{ + 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_string(p.pin1); + mutate_string(p.pin2); + + 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); + + 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