80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
// virtual_interface.hpp - Virtual Interface for Network Communication
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// Copyright (C) 2025 DcruBro
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// Distributed under the terms of the GNU General Public License, either version 2 only or version 3. See LICENSES/ for details.
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#pragma once
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#include <stdexcept>
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#include <cstring>
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#include <cerrno>
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#include <vector>
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#include <iostream>
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#include <columnlynx/common/utils.hpp>
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#if defined(__linux__)
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <linux/if.h>
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#include <linux/if_tun.h>
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#include <arpa/inet.h>
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#elif defined(__APPLE__)
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#include <sys/socket.h>
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#include <sys/kern_control.h>
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#include <sys/sys_domain.h>
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#include <net/if_utun.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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#elif defined(_WIN32)
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#include <windows.h>
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#include <ws2tcpip.h>
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#include <winsock2.h>
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#include <wintun/wintun.h>
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#pragma comment(lib, "advapi32.lib")
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#endif
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namespace ColumnLynx::Net {
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class VirtualInterface {
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public:
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explicit VirtualInterface(const std::string& ifName);
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~VirtualInterface();
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bool configureIP(uint32_t clientIP, uint32_t serverIP,
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uint8_t prefixLen, uint16_t mtu);
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std::vector<uint8_t> readPacket();
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void writePacket(const std::vector<uint8_t>& packet);
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const std::string& getName() const;
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int getFd() const; // For ASIO integration (on POSIX)
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static inline std::string ipv4ToString(uint32_t ip) {
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struct in_addr addr;
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addr.s_addr = htonl(ip);
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char buf[INET_ADDRSTRLEN];
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if (!inet_ntop(AF_INET, &addr, buf, sizeof(buf)))
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return "0.0.0.0";
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return std::string(buf);
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}
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static inline uint32_t prefixLengthToNetmask(uint8_t prefixLen) {
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if (prefixLen == 0) return 0;
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uint32_t mask = (0xFFFFFFFF << (32 - prefixLen)) & 0xFFFFFFFF;
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return htonl(mask); // convert to network byte order
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}
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private:
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bool mApplyLinuxIP(uint32_t clientIP, uint32_t serverIP, uint8_t prefixLen, uint16_t mtu);
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bool mApplyMacOSIP(uint32_t clientIP, uint32_t serverIP, uint8_t prefixLen, uint16_t mtu);
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bool mApplyWindowsIP(uint32_t clientIP, uint32_t serverIP, uint8_t prefixLen, uint16_t mtu);
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std::string mIfName;
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int mFd; // POSIX
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#if defined(_WIN32)
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HANDLE mHandle; // Windows
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#endif
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};
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} |