100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
/*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2022 Nathaniel Brough
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
#include <cassert>
|
|
#include <fuzzer/FuzzedDataProvider.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "class/cdc/cdc_device.h"
|
|
#include "class/net/net_device.h"
|
|
#include "fuzz/fuzz.h"
|
|
#include "tusb.h"
|
|
#include <cstdint>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
extern "C" {
|
|
|
|
#define FUZZ_ITERATIONS 500
|
|
|
|
//--------------------------------------------------------------------+
|
|
// MACRO CONSTANT TYPEDEF PROTYPES
|
|
//--------------------------------------------------------------------+
|
|
|
|
void net_task(FuzzedDataProvider *provider);
|
|
|
|
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
|
|
FuzzedDataProvider provider(Data, Size);
|
|
std::vector<uint8_t> callback_data = provider.ConsumeBytes<uint8_t>(
|
|
provider.ConsumeIntegralInRange<size_t>(0, Size));
|
|
fuzz_init(callback_data.data(), callback_data.size());
|
|
// init device stack on configured roothub port
|
|
tud_init(BOARD_TUD_RHPORT);
|
|
|
|
for (int i = 0; i < FUZZ_ITERATIONS; i++) {
|
|
if (provider.remaining_bytes() == 0) {
|
|
return 0;
|
|
}
|
|
tud_int_handler(provider.ConsumeIntegral<uint8_t>());
|
|
tud_task(); // tinyusb device task
|
|
net_task(&provider);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
//--------------------------------------------------------------------+
|
|
// USB CDC
|
|
//--------------------------------------------------------------------+
|
|
enum NetApiFuncs {
|
|
kNetworkRecvRenew,
|
|
kNetworkCanXmit,
|
|
kNetworkXmit,
|
|
kMaxValue,
|
|
};
|
|
|
|
void net_task(FuzzedDataProvider *provider) {
|
|
|
|
assert(provider != NULL);
|
|
switch (provider->ConsumeEnum<NetApiFuncs>()) {
|
|
|
|
case kNetworkRecvRenew:
|
|
tud_network_recv_renew();
|
|
break;
|
|
case kNetworkCanXmit:
|
|
(void)tud_network_can_xmit(provider->ConsumeIntegral<uint16_t>());
|
|
case kNetworkXmit:
|
|
// TODO: Actually pass real values here later.
|
|
tud_network_xmit(NULL, 0);
|
|
|
|
case kMaxValue:
|
|
// Noop.
|
|
break;
|
|
}
|
|
}
|
|
}
|