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https://github.com/RfidResearchGroup/proxmark3.git
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63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
//-----------------------------------------------------------------------------
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// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// See LICENSE.txt for the text of the license.
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//-----------------------------------------------------------------------------
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// TCP relay socket abstraction layer
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//-----------------------------------------------------------------------------
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#ifndef RELAY_H__
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#define RELAY_H__
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#include "common.h"
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#ifdef _WIN32
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#include <winsock2.h>
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typedef SOCKET relay_socket_t;
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#define RELAY_SOCKET_INVALID INVALID_SOCKET
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#else
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typedef int relay_socket_t;
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#define RELAY_SOCKET_INVALID (-1)
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#endif
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// Initialize relay subsystem (call once at startup).
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// On Win32 this calls WSAStartup; on POSIX it is a no-op.
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int relay_init(void);
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// Tear down relay subsystem (call once at shutdown).
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// On Win32 this calls WSACleanup; on POSIX it is a no-op.
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void relay_cleanup(void);
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// Create a TCP server socket bound to INADDR_ANY:<port>, listen, and
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// block until one client connects. Returns the *client* fd/SOCKET.
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// On error, returns RELAY_SOCKET_INVALID. Caller owns both sockets;
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// the listening socket is written to *listen_sock so it can be closed.
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relay_socket_t relay_listen_accept(uint16_t port, relay_socket_t *listen_sock);
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// Connect to a TCP server at ip:port.
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// Returns the connected socket or RELAY_SOCKET_INVALID on error.
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relay_socket_t relay_connect(const char *ip, uint16_t port);
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// Send exactly `len` bytes from `buf`.
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// Returns 0 on success, -1 on error.
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int relay_send_all(relay_socket_t sock, const void *buf, uint32_t len);
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// Receive exactly `len` bytes into `buf`.
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// Returns number of bytes received, or -1 on error / disconnect.
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int relay_recv_all(relay_socket_t sock, void *buf, uint32_t len);
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// Close a relay socket.
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void relay_close(relay_socket_t sock);
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#endif // RELAY_H__
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