535 lines
13 KiB
C++
535 lines
13 KiB
C++
#include <std_include.hpp>
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#include "loader/component_loader.hpp"
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#include <utilities/io.hpp>
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#include <utilities/hook.hpp>
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#include <utilities/thread.hpp>
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#include "demonware/servers/lobby_server.hpp"
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#include "demonware/servers/auth3_server.hpp"
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#include "demonware/servers/stun_server.hpp"
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#include "demonware/servers/umbrella_server.hpp"
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#include "demonware/servers/fileshare_server.hpp"
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#include "demonware/server_registry.hpp"
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#define TCP_BLOCKING true
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#define UDP_BLOCKING false
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namespace demonware
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{
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const char* blocked_hosts[] =
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{
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"us.cdn.blizzard.com",
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"us.actual.battle.net",
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"eu.cdn.blizzard.com",
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"eu.actual.battle.net",
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"level3.blizzard.com",
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"blzddist1-a.akamaihd.net",
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"level3.ssl.blizzard.com"
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};
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namespace
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{
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std::atomic_bool exit_server{ false };
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std::thread server_thread{};
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utilities::concurrency::container<std::unordered_map<SOCKET, bool>> blocking_sockets{};
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utilities::concurrency::container<std::unordered_map<SOCKET, tcp_server*>> socket_map{};
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server_registry<tcp_server> tcp_servers{};
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server_registry<udp_server> udp_servers{};
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std::unordered_map<void*, void*> original_imports{};
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tcp_server* find_server(const SOCKET socket)
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{
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return socket_map.access<tcp_server*>([&](const std::unordered_map<SOCKET, tcp_server*>& map) -> tcp_server*
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{
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const auto entry = map.find(socket);
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if (entry == map.end())
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{
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return nullptr;
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}
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return entry->second;
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});
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}
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bool socket_link(const SOCKET socket, const uint32_t address)
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{
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auto* server = tcp_servers.find(address);
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if (!server)
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{
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return false;
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}
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socket_map.access([&](std::unordered_map<SOCKET, tcp_server*>& map)
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{
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map[socket] = server;
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});
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return true;
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}
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void socket_unlink(const SOCKET socket)
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{
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socket_map.access([&](std::unordered_map<SOCKET, tcp_server*>& map)
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{
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const auto entry = map.find(socket);
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if (entry != map.end())
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{
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map.erase(entry);
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}
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});
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}
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bool is_socket_blocking(const SOCKET socket, const bool def)
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{
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return blocking_sockets.access<bool>([&](std::unordered_map<SOCKET, bool>& map)
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{
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const auto entry = map.find(socket);
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if (entry == map.end())
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{
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return def;
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}
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return entry->second;
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});
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}
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void remove_blocking_socket(const SOCKET socket)
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{
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blocking_sockets.access([&](std::unordered_map<SOCKET, bool>& map)
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{
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const auto entry = map.find(socket);
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if (entry != map.end())
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{
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map.erase(entry);
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}
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});
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}
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void add_blocking_socket(const SOCKET socket, const bool block)
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{
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blocking_sockets.access([&](std::unordered_map<SOCKET, bool>& map)
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{
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map[socket] = block;
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});
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}
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void server_main()
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{
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exit_server = false;
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while (!exit_server)
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{
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tcp_servers.frame();
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udp_servers.frame();
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std::this_thread::sleep_for(50ms);
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}
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}
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namespace io
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{
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int getaddrinfo_stub(const char* name, const char* service,
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const addrinfo* hints, addrinfo** res)
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{
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#ifndef NDEBUG
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logger::write(logger::LOG_TYPE_DEBUG, "[ network ]: [getaddrinfo]: \"%s\" \"%s\"", name, service);
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#endif
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for (auto i = 0; i < ARRAYSIZE(blocked_hosts); ++i)
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{
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if (!strcmp(name, blocked_hosts[i]))
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{
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return WSAHOST_NOT_FOUND;
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}
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}
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base_server* server = tcp_servers.find(name);
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if (!server)
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{
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server = udp_servers.find(name);
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}
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if (!server)
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{
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return getaddrinfo(name, service, hints, res);
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}
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const auto address = utilities::memory::get_allocator()->allocate<sockaddr>();
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const auto ai = utilities::memory::get_allocator()->allocate<addrinfo>();
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auto in_addr = reinterpret_cast<sockaddr_in*>(address);
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in_addr->sin_addr.s_addr = server->get_address();
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in_addr->sin_family = AF_INET;
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ai->ai_family = AF_INET;
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ai->ai_socktype = SOCK_STREAM;
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ai->ai_addr = address;
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ai->ai_addrlen = sizeof(sockaddr);
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ai->ai_next = nullptr;
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ai->ai_flags = 0;
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ai->ai_protocol = 0;
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ai->ai_canonname = const_cast<char*>(name);
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*res = ai;
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return 0;
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}
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void freeaddrinfo_stub(addrinfo* ai)
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{
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if (!utilities::memory::get_allocator()->find(ai))
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{
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return freeaddrinfo(ai);
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}
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utilities::memory::get_allocator()->free(ai->ai_addr);
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utilities::memory::get_allocator()->free(ai);
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}
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int getpeername_stub(const SOCKET s, sockaddr* addr, socklen_t* addrlen)
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{
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auto* server = find_server(s);
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if (server)
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{
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auto in_addr = reinterpret_cast<sockaddr_in*>(addr);
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in_addr->sin_addr.s_addr = server->get_address();
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in_addr->sin_family = AF_INET;
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*addrlen = sizeof(sockaddr);
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return 0;
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}
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return getpeername(s, addr, addrlen);
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}
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int getsockname_stub(const SOCKET s, sockaddr* addr, socklen_t* addrlen)
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{
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auto* server = find_server(s);
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if (server)
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{
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auto in_addr = reinterpret_cast<sockaddr_in*>(addr);
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in_addr->sin_addr.s_addr = server->get_address();
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in_addr->sin_family = AF_INET;
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*addrlen = sizeof(sockaddr);
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return 0;
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}
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return getsockname(s, addr, addrlen);
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}
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hostent* gethostbyname_stub(const char* name)
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{
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#ifndef NDEBUG
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logger::write(logger::LOG_TYPE_DEBUG, "[ network ]: [gethostbyname]: \"%s\"", name);
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#endif
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base_server* server = tcp_servers.find(name);
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if (!server)
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{
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server = udp_servers.find(name);
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}
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if (!server)
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{
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#pragma warning(push)
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#pragma warning(disable: 4996)
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return gethostbyname(name);
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#pragma warning(pop)
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}
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static thread_local in_addr address{};
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address.s_addr = server->get_address();
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static thread_local in_addr* addr_list[2]{};
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addr_list[0] = &address;
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addr_list[1] = nullptr;
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static thread_local hostent host{};
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host.h_name = const_cast<char*>(name);
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host.h_aliases = nullptr;
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host.h_addrtype = AF_INET;
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host.h_length = sizeof(in_addr);
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host.h_addr_list = reinterpret_cast<char**>(addr_list);
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return &host;
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}
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int connect_stub(const SOCKET s, const struct sockaddr* addr, const int len)
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{
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if (len == sizeof(sockaddr_in))
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{
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const auto* in_addr = reinterpret_cast<const sockaddr_in*>(addr);
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if (socket_link(s, in_addr->sin_addr.s_addr)) return 0;
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}
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return connect(s, addr, len);
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}
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int closesocket_stub(const SOCKET s)
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{
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remove_blocking_socket(s);
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socket_unlink(s);
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return closesocket(s);
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}
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int send_stub(const SOCKET s, const char* buf, const int len, const int flags)
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{
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auto* server = find_server(s);
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if (server)
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{
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server->handle_input(buf, len);
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return len;
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}
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return send(s, buf, len, flags);
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}
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int recv_stub(const SOCKET s, char* buf, const int len, const int flags)
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{
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auto* server = find_server(s);
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if (server)
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{
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if (server->pending_data())
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{
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return static_cast<int>(server->handle_output(buf, len));
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}
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else
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{
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WSASetLastError(WSAEWOULDBLOCK);
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return -1;
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}
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}
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return recv(s, buf, len, flags);
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}
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int sendto_stub(const SOCKET s, const char* buf, const int len, const int flags, const sockaddr* to,
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const int tolen)
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{
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const auto* in_addr = reinterpret_cast<const sockaddr_in*>(to);
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auto* server = udp_servers.find(in_addr->sin_addr.s_addr);
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if (server)
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{
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server->handle_input(buf, len, { s, to, tolen });
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return len;
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}
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return sendto(s, buf, len, flags, to, tolen);
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}
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int recvfrom_stub(const SOCKET s, char* buf, const int len, const int flags, struct sockaddr* from,
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int* fromlen)
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{
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// Not supported yet
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if (is_socket_blocking(s, UDP_BLOCKING))
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{
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return recvfrom(s, buf, len, flags, from, fromlen);
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}
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size_t result = 0;
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udp_servers.for_each([&](udp_server& server)
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{
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if (server.pending_data(s))
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{
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result = server.handle_output(
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s, buf, static_cast<size_t>(len), from, fromlen);
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}
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});
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if (result)
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{
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return static_cast<int>(result);
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}
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return recvfrom(s, buf, len, flags, from, fromlen);
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}
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int select_stub(const int nfds, fd_set* readfds, fd_set* writefds, fd_set* exceptfds,
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struct timeval* timeout)
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{
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if (exit_server)
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{
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return select(nfds, readfds, writefds, exceptfds, timeout);
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}
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auto result = 0;
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std::vector<SOCKET> read_sockets;
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std::vector<SOCKET> write_sockets;
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socket_map.access([&](std::unordered_map<SOCKET, tcp_server*>& sockets)
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{
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for (auto& s : sockets)
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{
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if (readfds)
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{
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if (FD_ISSET(s.first, readfds))
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{
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if (s.second->pending_data())
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{
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read_sockets.push_back(s.first);
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FD_CLR(s.first, readfds);
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}
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}
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}
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if (writefds)
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{
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if (FD_ISSET(s.first, writefds))
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{
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write_sockets.push_back(s.first);
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FD_CLR(s.first, writefds);
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}
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}
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if (exceptfds)
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{
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if (FD_ISSET(s.first, exceptfds))
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{
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FD_CLR(s.first, exceptfds);
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}
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}
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}
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});
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if ((!readfds || readfds->fd_count == 0) && (!writefds || writefds->fd_count == 0))
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{
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timeout->tv_sec = 0;
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timeout->tv_usec = 0;
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}
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result = select(nfds, readfds, writefds, exceptfds, timeout);
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if (result < 0) result = 0;
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for (const auto& socket : read_sockets)
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{
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if (readfds)
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{
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FD_SET(socket, readfds);
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result++;
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}
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}
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for (const auto& socket : write_sockets)
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{
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if (writefds)
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{
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FD_SET(socket, writefds);
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result++;
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}
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}
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return result;
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}
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int ioctlsocket_stub(const SOCKET s, const long cmd, u_long* argp)
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{
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if (static_cast<unsigned long>(cmd) == (FIONBIO))
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{
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add_blocking_socket(s, *argp == 0);
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}
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return ioctlsocket(s, cmd, argp);
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}
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}
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void register_hook(const std::string& process, void* stub)
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{
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const utilities::nt::library game_module{};
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std::optional<std::pair<void*, void*>> result{};
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if (!result) result = utilities::hook::iat(game_module, "wsock32.dll", process, stub);
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if (!result) result = utilities::hook::iat(game_module, "WS2_32.dll", process, stub);
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if (!result)
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{
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throw std::runtime_error("Failed to hook: " + process);
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}
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original_imports[result->first] = result->second;
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}
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void check_lpc_files()
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{
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if (!utilities::io::file_exists("LPC/.manifest") || !utilities::io::file_exists("LPC/core_ffotd_tu23_639_cf92ecf4a75d3f79.ff") || !utilities::io::file_exists("LPC/core_playlists_tu23_639_cf92ecf4a75d3f79.ff"))
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{
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MessageBoxA(nullptr, "some required LPC files seems to be missing. You need to get and place them manually since this emulator doesnt host and provide those files; read instructions in github documentation for more info.",
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"LPC Files Missing", MB_ICONERROR);
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}
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}
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}
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class component final : public component_interface
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{
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public:
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component()
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{
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udp_servers.create<stun_server>("ops4-stun.us.demonware.net");
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udp_servers.create<stun_server>("ops4-stun.eu.demonware.net");
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udp_servers.create<stun_server>("ops4-stun.jp.demonware.net");
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udp_servers.create<stun_server>("ops4-stun.au.demonware.net");
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tcp_servers.create<auth3_server>("ops4-pc-auth3.prod.demonware.net");
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tcp_servers.create<lobby_server>("ops4-pc-lobby.prod.demonware.net");
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tcp_servers.create<umbrella_server>("prod.umbrella.demonware.net");
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tcp_servers.create<fileshare_server>("ops4-fileshare.prod.schild.net");
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}
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void pre_start() override
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{
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register_hook("send", io::send_stub);
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register_hook("recv", io::recv_stub);
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register_hook("sendto", io::sendto_stub);
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register_hook("recvfrom", io::recvfrom_stub);
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register_hook("connect", io::connect_stub);
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register_hook("select", io::select_stub);
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register_hook("closesocket", io::closesocket_stub);
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register_hook("ioctlsocket", io::ioctlsocket_stub);
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register_hook("gethostbyname", io::gethostbyname_stub);
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register_hook("getaddrinfo", io::getaddrinfo_stub);
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register_hook("freeaddrinfo", io::freeaddrinfo_stub);
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register_hook("getpeername", io::getpeername_stub);
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register_hook("getsockname", io::getsockname_stub);
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check_lpc_files();
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}
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void post_unpack() override
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{
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server_thread = utilities::thread::create_named_thread("Demonware", server_main);
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utilities::hook::set<uint8_t>(0x144508469_g, 0x0); // CURLOPT_SSL_VERIFYPEER
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utilities::hook::set<uint8_t>(0x144508455_g, 0xAF); // CURLOPT_SSL_VERIFYHOST
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utilities::hook::set<uint8_t>(0x144B28D98_g, 0x0); // HTTPS -> HTTP
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utilities::hook::copy_string(0x144A27C70_g, "http://prod.umbrella.demonware.net");
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utilities::hook::copy_string(0x144A2BAA0_g, "http://prod.uno.demonware.net/v1.0");
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utilities::hook::copy_string(0x144A29CB0_g, "http://%s:%d/auth/");
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utilities::hook::set(0x142DD0E10_g, 0xC301B0); // Live_Qos_Finished
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utilities::hook::set(0x1438C2C70_g, 0xC301B0); // Live_Contracts? related to bdUNK125
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}
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void pre_destroy() override
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{
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exit_server = true;
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if (server_thread.joinable())
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{
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server_thread.join();
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}
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for (const auto& import : original_imports)
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{
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utilities::hook::set(import.first, import.second);
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}
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}
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};
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}
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REGISTER_COMPONENT(demonware::component) |