From 6fceb8493066173c83ace14cadd6daa02666bcfb Mon Sep 17 00:00:00 2001 From: DcruBro Date: Wed, 12 Nov 2025 19:14:44 +0100 Subject: [PATCH] Added basic virtual interface implementation, needs testing. Added Wintun licenses. --- ATTRIBUTIONS.md | 9 +- README.md | 8 + .../common/net/virtual_interface.hpp | 51 +++ include/wintun/wintun.h | 270 ++++++++++++++ src/client/main.cpp | 9 + src/common/virtual_interface.cpp | 131 +++++++ .../wintun/LICENSE_1_0_GPL-2.0-only.txt | 338 ++++++++++++++++++ third_party/wintun/LICENSE_1_0_MIT.txt | 19 + 8 files changed, 834 insertions(+), 1 deletion(-) create mode 100644 include/columnlynx/common/net/virtual_interface.hpp create mode 100644 include/wintun/wintun.h create mode 100644 src/common/virtual_interface.cpp create mode 100644 third_party/wintun/LICENSE_1_0_GPL-2.0-only.txt create mode 100644 third_party/wintun/LICENSE_1_0_MIT.txt diff --git a/ATTRIBUTIONS.md b/ATTRIBUTIONS.md index 06ddd20..9a1efa3 100644 --- a/ATTRIBUTIONS.md +++ b/ATTRIBUTIONS.md @@ -14,4 +14,11 @@ This project uses the standalone version of the ASIO C++ library for asynchronou - **Website:** https://github.com/jarro2783/cxxopts/ - **Copyright:** (c) 2014-2025 Christopher M. Kohlhoff - **License:** MIT License -- **License Text:** See `third_party/cxxopts/LICENSE_1_0.txt` \ No newline at end of file +- **License Text:** See `third_party/cxxopts/LICENSE_1_0.txt` + +## Wintun C++ Library +- **Name:** wintun +- **Website:** https://www.wintun.net/ +- **Copyright:** (c) 2018-2025 WireGuard LLC +- **License:** MIT License OR GPL-2.0 License +- **License Text:** See `third_party/wintun/` \ No newline at end of file diff --git a/README.md b/README.md index b4c93d1..47252e4 100644 --- a/README.md +++ b/README.md @@ -108,6 +108,9 @@ The **Data** is generally just the **raw underlying packet** forwarded to the se | uint64_t | 8 bytes | **Header** - Session ID | The unique and random session identifier for the client | | uint8_t | variable | Data | General data / payload | +## Misc. +Building the binary for Windows requires the Wintun DLL. The include header is pre-packaged. + ## Legal ### Copyright ownership: @@ -152,4 +155,9 @@ along with this program. If not, see . This project includes the [ASIO C++ Library](https://think-async.com/Asio/), distributed under the [Boost Software License, Version 1.0](https://www.boost.org/LICENSE_1_0.txt). +This project includes the CXXOPTS Library +distributed under the MIT License + +This project includes the [Wintun Library](https://www.wintun.net/), distributed under the MIT License or the GPL-2.0 License. + *See **ATTRIBUTIONS.md** for details.* \ No newline at end of file diff --git a/include/columnlynx/common/net/virtual_interface.hpp b/include/columnlynx/common/net/virtual_interface.hpp new file mode 100644 index 0000000..6cdf874 --- /dev/null +++ b/include/columnlynx/common/net/virtual_interface.hpp @@ -0,0 +1,51 @@ +// virtual_interface.hpp - Virtual Interface for Network Communication +// Copyright (C) 2025 DcruBro +// Distributed under the terms of the GNU General Public License, either version 2 only or version 3. See LICENSES/ for details. + +#pragma once + +#include +#include +#include +#include +#include +#include + +#if defined(__linux__) + #include + #include + #include + #include + #include +#elif defined(__APPLE__) + #include + #include + #include + #include + #include + #include +#elif defined(_WIN32) + #include + #include + #pragma comment(lib, "advapi32.lib") +#endif + +namespace ColumnLynx::Net { + class VirtualInterface { + public: + explicit VirtualInterface(const std::string& ifName); + ~VirtualInterface(); + + std::vector readPacket(); + void writePacket(const std::vector& packet); + + const std::string& getName() const; + int getFd() const; // for ASIO integration (on POSIX) + private: + std::string mIfName; + int mFd; // POSIX + #if defined(_WIN32) + HANDLE mHandle; // Windows + #endif + }; +} \ No newline at end of file diff --git a/include/wintun/wintun.h b/include/wintun/wintun.h new file mode 100644 index 0000000..55d441f --- /dev/null +++ b/include/wintun/wintun.h @@ -0,0 +1,270 @@ +/* SPDX-License-Identifier: GPL-2.0 OR MIT + * + * Copyright (C) 2018-2021 WireGuard LLC. All Rights Reserved. + */ + +#pragma once + +#include +#include +#include +#include +#include + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef ALIGNED +# if defined(_MSC_VER) +# define ALIGNED(n) __declspec(align(n)) +# elif defined(__GNUC__) +# define ALIGNED(n) __attribute__((aligned(n))) +# else +# error "Unable to define ALIGNED" +# endif +#endif + +/* MinGW is missing this one, unfortunately. */ +#ifndef _Post_maybenull_ +# define _Post_maybenull_ +#endif + +#pragma warning(push) +#pragma warning(disable : 4324) /* structure was padded due to alignment specifier */ + +/** + * A handle representing Wintun adapter + */ +typedef struct _WINTUN_ADAPTER *WINTUN_ADAPTER_HANDLE; + +/** + * Creates a new Wintun adapter. + * + * @param Name The requested name of the adapter. Zero-terminated string of up to MAX_ADAPTER_NAME-1 + * characters. + * + * @param TunnelType Name of the adapter tunnel type. Zero-terminated string of up to MAX_ADAPTER_NAME-1 + * characters. + * + * @param RequestedGUID The GUID of the created network adapter, which then influences NLA generation deterministically. + * If it is set to NULL, the GUID is chosen by the system at random, and hence a new NLA entry is + * created for each new adapter. It is called "requested" GUID because the API it uses is + * completely undocumented, and so there could be minor interesting complications with its usage. + * + * @return If the function succeeds, the return value is the adapter handle. Must be released with + * WintunCloseAdapter. If the function fails, the return value is NULL. To get extended error information, call + * GetLastError. + */ +typedef _Must_inspect_result_ +_Return_type_success_(return != NULL) +_Post_maybenull_ +WINTUN_ADAPTER_HANDLE(WINAPI WINTUN_CREATE_ADAPTER_FUNC) +(_In_z_ LPCWSTR Name, _In_z_ LPCWSTR TunnelType, _In_opt_ const GUID *RequestedGUID); + +/** + * Opens an existing Wintun adapter. + * + * @param Name The requested name of the adapter. Zero-terminated string of up to MAX_ADAPTER_NAME-1 + * characters. + * + * @return If the function succeeds, the return value is the adapter handle. Must be released with + * WintunCloseAdapter. If the function fails, the return value is NULL. To get extended error information, call + * GetLastError. + */ +typedef _Must_inspect_result_ +_Return_type_success_(return != NULL) +_Post_maybenull_ +WINTUN_ADAPTER_HANDLE(WINAPI WINTUN_OPEN_ADAPTER_FUNC)(_In_z_ LPCWSTR Name); + +/** + * Releases Wintun adapter resources and, if adapter was created with WintunCreateAdapter, removes adapter. + * + * @param Adapter Adapter handle obtained with WintunCreateAdapter or WintunOpenAdapter. + */ +typedef VOID(WINAPI WINTUN_CLOSE_ADAPTER_FUNC)(_In_opt_ WINTUN_ADAPTER_HANDLE Adapter); + +/** + * Deletes the Wintun driver if there are no more adapters in use. + * + * @return If the function succeeds, the return value is nonzero. If the function fails, the return value is zero. To + * get extended error information, call GetLastError. + */ +typedef _Return_type_success_(return != FALSE) +BOOL(WINAPI WINTUN_DELETE_DRIVER_FUNC)(VOID); + +/** + * Returns the LUID of the adapter. + * + * @param Adapter Adapter handle obtained with WintunCreateAdapter or WintunOpenAdapter + * + * @param Luid Pointer to LUID to receive adapter LUID. + */ +typedef VOID(WINAPI WINTUN_GET_ADAPTER_LUID_FUNC)(_In_ WINTUN_ADAPTER_HANDLE Adapter, _Out_ NET_LUID *Luid); + +/** + * Determines the version of the Wintun driver currently loaded. + * + * @return If the function succeeds, the return value is the version number. If the function fails, the return value is + * zero. To get extended error information, call GetLastError. Possible errors include the following: + * ERROR_FILE_NOT_FOUND Wintun not loaded + */ +typedef _Return_type_success_(return != 0) +DWORD(WINAPI WINTUN_GET_RUNNING_DRIVER_VERSION_FUNC)(VOID); + +/** + * Determines the level of logging, passed to WINTUN_LOGGER_CALLBACK. + */ +typedef enum +{ + WINTUN_LOG_INFO, /**< Informational */ + WINTUN_LOG_WARN, /**< Warning */ + WINTUN_LOG_ERR /**< Error */ +} WINTUN_LOGGER_LEVEL; + +/** + * Called by internal logger to report diagnostic messages + * + * @param Level Message level. + * + * @param Timestamp Message timestamp in in 100ns intervals since 1601-01-01 UTC. + * + * @param Message Message text. + */ +typedef VOID(CALLBACK *WINTUN_LOGGER_CALLBACK)( + _In_ WINTUN_LOGGER_LEVEL Level, + _In_ DWORD64 Timestamp, + _In_z_ LPCWSTR Message); + +/** + * Sets logger callback function. + * + * @param NewLogger Pointer to callback function to use as a new global logger. NewLogger may be called from various + * threads concurrently. Should the logging require serialization, you must handle serialization in + * NewLogger. Set to NULL to disable. + */ +typedef VOID(WINAPI WINTUN_SET_LOGGER_FUNC)(_In_ WINTUN_LOGGER_CALLBACK NewLogger); + +/** + * Minimum ring capacity. + */ +#define WINTUN_MIN_RING_CAPACITY 0x20000 /* 128kiB */ + +/** + * Maximum ring capacity. + */ +#define WINTUN_MAX_RING_CAPACITY 0x4000000 /* 64MiB */ + +/** + * A handle representing Wintun session + */ +typedef struct _TUN_SESSION *WINTUN_SESSION_HANDLE; + +/** + * Starts Wintun session. + * + * @param Adapter Adapter handle obtained with WintunOpenAdapter or WintunCreateAdapter + * + * @param Capacity Rings capacity. Must be between WINTUN_MIN_RING_CAPACITY and WINTUN_MAX_RING_CAPACITY (incl.) + * Must be a power of two. + * + * @return Wintun session handle. Must be released with WintunEndSession. If the function fails, the return value is + * NULL. To get extended error information, call GetLastError. + */ +typedef _Must_inspect_result_ +_Return_type_success_(return != NULL) +_Post_maybenull_ +WINTUN_SESSION_HANDLE(WINAPI WINTUN_START_SESSION_FUNC)(_In_ WINTUN_ADAPTER_HANDLE Adapter, _In_ DWORD Capacity); + +/** + * Ends Wintun session. + * + * @param Session Wintun session handle obtained with WintunStartSession + */ +typedef VOID(WINAPI WINTUN_END_SESSION_FUNC)(_In_ WINTUN_SESSION_HANDLE Session); + +/** + * Gets Wintun session's read-wait event handle. + * + * @param Session Wintun session handle obtained with WintunStartSession + * + * @return Pointer to receive event handle to wait for available data when reading. Should + * WintunReceivePackets return ERROR_NO_MORE_ITEMS (after spinning on it for a while under heavy + * load), wait for this event to become signaled before retrying WintunReceivePackets. Do not call + * CloseHandle on this event - it is managed by the session. + */ +typedef HANDLE(WINAPI WINTUN_GET_READ_WAIT_EVENT_FUNC)(_In_ WINTUN_SESSION_HANDLE Session); + +/** + * Maximum IP packet size + */ +#define WINTUN_MAX_IP_PACKET_SIZE 0xFFFF + +/** + * Retrieves one or packet. After the packet content is consumed, call WintunReleaseReceivePacket with Packet returned + * from this function to release internal buffer. This function is thread-safe. + * + * @param Session Wintun session handle obtained with WintunStartSession + * + * @param PacketSize Pointer to receive packet size. + * + * @return Pointer to layer 3 IPv4 or IPv6 packet. Client may modify its content at will. If the function fails, the + * return value is NULL. To get extended error information, call GetLastError. Possible errors include the + * following: + * ERROR_HANDLE_EOF Wintun adapter is terminating; + * ERROR_NO_MORE_ITEMS Wintun buffer is exhausted; + * ERROR_INVALID_DATA Wintun buffer is corrupt + */ +typedef _Must_inspect_result_ +_Return_type_success_(return != NULL) +_Post_maybenull_ +_Post_writable_byte_size_(*PacketSize) +BYTE *(WINAPI WINTUN_RECEIVE_PACKET_FUNC)(_In_ WINTUN_SESSION_HANDLE Session, _Out_ DWORD *PacketSize); + +/** + * Releases internal buffer after the received packet has been processed by the client. This function is thread-safe. + * + * @param Session Wintun session handle obtained with WintunStartSession + * + * @param Packet Packet obtained with WintunReceivePacket + */ +typedef VOID( + WINAPI WINTUN_RELEASE_RECEIVE_PACKET_FUNC)(_In_ WINTUN_SESSION_HANDLE Session, _In_ const BYTE *Packet); + +/** + * Allocates memory for a packet to send. After the memory is filled with packet data, call WintunSendPacket to send + * and release internal buffer. WintunAllocateSendPacket is thread-safe and the WintunAllocateSendPacket order of + * calls define the packet sending order. + * + * @param Session Wintun session handle obtained with WintunStartSession + * + * @param PacketSize Exact packet size. Must be less or equal to WINTUN_MAX_IP_PACKET_SIZE. + * + * @return Returns pointer to memory where to prepare layer 3 IPv4 or IPv6 packet for sending. If the function fails, + * the return value is NULL. To get extended error information, call GetLastError. Possible errors include the + * following: + * ERROR_HANDLE_EOF Wintun adapter is terminating; + * ERROR_BUFFER_OVERFLOW Wintun buffer is full; + */ +typedef _Must_inspect_result_ +_Return_type_success_(return != NULL) +_Post_maybenull_ +_Post_writable_byte_size_(PacketSize) +BYTE *(WINAPI WINTUN_ALLOCATE_SEND_PACKET_FUNC)(_In_ WINTUN_SESSION_HANDLE Session, _In_ DWORD PacketSize); + +/** + * Sends the packet and releases internal buffer. WintunSendPacket is thread-safe, but the WintunAllocateSendPacket + * order of calls define the packet sending order. This means the packet is not guaranteed to be sent in the + * WintunSendPacket yet. + * + * @param Session Wintun session handle obtained with WintunStartSession + * + * @param Packet Packet obtained with WintunAllocateSendPacket + */ +typedef VOID(WINAPI WINTUN_SEND_PACKET_FUNC)(_In_ WINTUN_SESSION_HANDLE Session, _In_ const BYTE *Packet); + +#pragma warning(pop) + +#ifdef __cplusplus +} +#endif diff --git a/src/client/main.cpp b/src/client/main.cpp index d863422..33cf9a2 100644 --- a/src/client/main.cpp +++ b/src/client/main.cpp @@ -10,9 +10,11 @@ #include #include #include +#include using asio::ip::tcp; using namespace ColumnLynx::Utils; +using namespace ColumnLynx::Net; volatile sig_atomic_t done = 0; @@ -56,6 +58,13 @@ int main(int argc, char** argv) { log("ColumnLynx Client, Version " + getVersion()); log("This software is licensed under the GPLv2 only OR the GPLv3. See LICENSES/ for details."); +#if defined(__WIN32__) + WintunInitialize(); +#endif + + VirtualInterface tun("columnlynxtun0"); + log("Using virtual interface: " + tun.getName()); + LibSodiumWrapper sodiumWrapper = LibSodiumWrapper(); std::array aesKey = {0}; // Defualt zeroed state until modified by handshake diff --git a/src/common/virtual_interface.cpp b/src/common/virtual_interface.cpp new file mode 100644 index 0000000..2d43a7b --- /dev/null +++ b/src/common/virtual_interface.cpp @@ -0,0 +1,131 @@ +// virtual_interface.cpp - Virtual Interface for Network Communication +// Copyright (C) 2025 DcruBro +// Distributed under the terms of the GNU General Public License, either version 2 only or version 3. See LICENSES/ for details. + +#include + +namespace ColumnLynx::Net { + // ------------------------------ Constructor ------------------------------ + VirtualInterface::VirtualInterface(const std::string& ifName) + : mIfName(ifName), mFd(-1) + { + #if defined(__linux__) + // ---- Linux: /dev/net/tun ---- + mFd = open("/dev/net/tun", O_RDWR); + if (mFd < 0) + throw std::runtime_error("Failed to open /dev/net/tun: " + std::string(strerror(errno))); + + struct ifreq ifr {}; + ifr.ifr_flags = IFF_TUN | IFF_NO_PI; + std::strncpy(ifr.ifr_name, ifName.c_str(), IFNAMSIZ); + + if (ioctl(mFd, TUNSETIFF, &ifr) < 0) { + close(mFd); + throw std::runtime_error("TUNSETIFF failed: " + std::string(strerror(errno))); + } + + #elif defined(__APPLE__) + // ---- macOS: UTUN (system control socket) ---- + mFd = socket(PF_SYSTEM, SOCK_DGRAM, SYSPROTO_CONTROL); + if (mFd < 0) + throw std::runtime_error("socket(PF_SYSTEM) failed: " + std::string(strerror(errno))); + + struct ctl_info ctlInfo {}; + std::strncpy(ctlInfo.ctl_name, UTUN_CONTROL_NAME, sizeof(ctlInfo.ctl_name)); + if (ioctl(mFd, CTLIOCGINFO, &ctlInfo) == -1) + throw std::runtime_error("ioctl(CTLIOCGINFO) failed: " + std::string(strerror(errno))); + + struct sockaddr_ctl sc {}; + sc.sc_len = sizeof(sc); + sc.sc_family = AF_SYSTEM; + sc.ss_sysaddr = AF_SYS_CONTROL; + sc.sc_id = ctlInfo.ctl_id; + sc.sc_unit = 0; // utun0 (0 = auto-assign) + + if (connect(mFd, (struct sockaddr*)&sc, sizeof(sc)) < 0) + throw std::runtime_error("connect(AF_SYS_CONTROL) failed: " + std::string(strerror(errno))); + + // Retrieve actual utun device name + struct sockaddr_storage addr; + socklen_t addrlen = sizeof(addr); + if (getsockname(mFd, (struct sockaddr*)&addr, &addrlen) == 0) { + const struct sockaddr_ctl* addr_ctl = (const struct sockaddr_ctl*)&addr; + mIfName = "utun" + std::to_string(addr_ctl->sc_unit - 1); + } else { + mIfName = "utunX"; + } + + #elif defined(_WIN32) + // ---- Windows: Wintun (WireGuard virtual adapter) ---- + WINTUN_ADAPTER_HANDLE adapter = + WintunOpenAdapter(L"ColumnLynx", std::wstring(ifName.begin(), ifName.end()).c_str()); + if (!adapter) + throw std::runtime_error("Wintun adapter not found or not installed"); + + WINTUN_SESSION_HANDLE session = + WintunStartSession(adapter, 0x200000); // ring buffer size + if (!session) + throw std::runtime_error("Failed to start Wintun session"); + + mHandle = WintunGetReadWaitEvent(session); + mFd = -1; // not used on Windows + mIfName = ifName; + + #else + throw std::runtime_error("Unsupported platform"); + #endif + } + + // ------------------------------ Destructor ------------------------------ + VirtualInterface::~VirtualInterface() { + #if defined(__linux__) || defined(__APPLE__) + if (mFd >= 0) + close(mFd); + #elif defined(_WIN32) + // Wintun sessions need explicit stop + // (assuming you stored the session handle as member) + // WintunEndSession(mSession); + #endif + } + + // ------------------------------ Read ------------------------------ + std::vector VirtualInterface::readPacket() { + #if defined(__linux__) || defined(__APPLE__) + std::vector buf(4096); + ssize_t n = read(mFd, buf.data(), buf.size()); + if (n < 0) + throw std::runtime_error("read() failed: " + std::string(strerror(errno))); + buf.resize(n); + return buf; + + #elif defined(_WIN32) + WINTUN_PACKET* packet = WintunReceivePacket(mSession, nullptr); + if (!packet) return {}; + std::vector buf(packet->Data, packet->Data + packet->Length); + WintunReleaseReceivePacket(mSession, packet); + return buf; + #else + return {}; + #endif + } + + // ------------------------------ Write ------------------------------ + void VirtualInterface::writePacket(const std::vector& packet) { + #if defined(__linux__) || defined(__APPLE__) + ssize_t n = write(mFd, packet.data(), packet.size()); + if (n < 0) + throw std::runtime_error("write() failed: " + std::string(strerror(errno))); + + #elif defined(_WIN32) + WINTUN_PACKET* tx = WintunAllocateSendPacket(mSession, (DWORD)packet.size()); + if (!tx) throw std::runtime_error("WintunAllocateSendPacket failed"); + memcpy(tx->Data, packet.data(), packet.size()); + WintunSendPacket(mSession, tx); + #endif + } + + // ------------------------------ Accessors ------------------------------ + const std::string& VirtualInterface::getName() const { return mIfName; } + + int VirtualInterface::getFd() const { return mFd; } +} \ No newline at end of file diff --git a/third_party/wintun/LICENSE_1_0_GPL-2.0-only.txt b/third_party/wintun/LICENSE_1_0_GPL-2.0-only.txt new file mode 100644 index 0000000..a66a55f --- /dev/null +++ b/third_party/wintun/LICENSE_1_0_GPL-2.0-only.txt @@ -0,0 +1,338 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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Any attempt +otherwise to copy, modify, sublicense or distribute the Program is +void, and will automatically terminate your rights under this License. +However, parties who have received copies, or rights, from you under +this License will not have their licenses terminated so long as such +parties remain in full compliance. + + 5. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Program or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Program (or any work based on the +Program), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Program or works based on it. + + 6. Each time you redistribute the Program (or any work based on the +Program), the recipient automatically receives a license from the +original licensor to copy, distribute or modify the Program subject to +these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties to +this License. + + 7. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Program at all. For example, if a patent +license would not permit royalty-free redistribution of the Program by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Program. + +If any portion of this section is held invalid or unenforceable under +any particular circumstance, the balance of the section is intended to +apply and the section as a whole is intended to apply in other +circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system, which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + + 8. If the distribution and/or use of the Program is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Program under this License +may add an explicit geographical distribution limitation excluding +those countries, so that distribution is permitted only in or among +countries not thus excluded. In such case, this License incorporates +the limitation as if written in the body of this License. + + 9. The Free Software Foundation may publish revised and/or new versions +of the General Public License from time to time. Such new versions will +be similar in spirit to the present version, but may differ in detail to +address new problems or concerns. + +Each version is given a distinguishing version number. If the Program +specifies a version number of this License which applies to it and "any +later version", you have the option of following the terms and conditions +either of that version or of any later version published by the Free +Software Foundation. If the Program does not specify a version number of +this License, you may choose any version ever published by the Free Software +Foundation. + + 10. If you wish to incorporate parts of the Program into other free +programs whose distribution conditions are different, write to the author +to ask for permission. For software which is copyrighted by the Free +Software Foundation, write to the Free Software Foundation; we sometimes +make exceptions for this. Our decision will be guided by the two goals +of preserving the free status of all derivatives of our free software and +of promoting the sharing and reuse of software generally. + + NO WARRANTY + + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, +REPAIR OR CORRECTION. + + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE +POSSIBILITY OF SUCH DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + 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 2 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 . + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Moe Ghoul, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. \ No newline at end of file diff --git a/third_party/wintun/LICENSE_1_0_MIT.txt b/third_party/wintun/LICENSE_1_0_MIT.txt new file mode 100644 index 0000000..9a18de4 --- /dev/null +++ b/third_party/wintun/LICENSE_1_0_MIT.txt @@ -0,0 +1,19 @@ +Copyright (c) 2018 WireGuard LLC + +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. \ No newline at end of file