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U2FDevice/IO.hpp

38 lines
1.2 KiB
C++

/*
U2FDevice - A program to allow Raspberry Pi Zeros to act as U2F tokens
Copyright (C) 2018 Michael Kuc
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <cstddef>
#include <cstdint>
#include <vector>
#ifdef DEBUG_STREAMS
extern std::string cacheDirectory;
#endif
#ifdef HID_SOCKET
extern std::string clientSocket;
#endif
// Returns either the number of bytes specified,
// or returns empty vector without discarding bytes from HID stream
std::vector<uint8_t> readNonBlock(const size_t count);
// Blocking write to HID stream - shouldn't block for too long
void write(const std::vector<uint8_t>& data);