mirror of
https://github.com/melonDS-emu/melonDS.git
synced 2025-03-06 21:00:31 +01:00
415 lines
8.3 KiB
C++
415 lines
8.3 KiB
C++
/*
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Copyright 2016-2020 Arisotura
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This file is part of melonDS.
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melonDS is free software: you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with melonDS. If not, see http://www.gnu.org/licenses/.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <QStandardPaths>
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#include <QDir>
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#include <QThread>
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#include <QSemaphore>
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#include <QOpenGLContext>
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#include "Platform.h"
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#include "PlatformConfig.h"
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#include "LAN_Socket.h"
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#include "LAN_PCap.h"
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#include <string>
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#ifdef __WIN32__
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#define NTDDI_VERSION 0x06000000 // GROSS FUCKING HACK
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#include <windows.h>
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//#include <knownfolders.h> // FUCK THAT SHIT
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#include <shlobj.h>
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#include <io.h>
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#define dup _dup
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#define socket_t SOCKET
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#define sockaddr_t SOCKADDR
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#else
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#include <unistd.h>
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#include <netinet/in.h>
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#include <sys/select.h>
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#include <sys/socket.h>
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#define socket_t int
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#define sockaddr_t struct sockaddr
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#define closesocket close
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#endif
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#ifndef INVALID_SOCKET
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#define INVALID_SOCKET (socket_t)-1
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#endif
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char* EmuDirectory;
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void emuStop();
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void* oglGetProcAddress(const char* proc);
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namespace Platform
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{
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socket_t MPSocket;
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sockaddr_t MPSendAddr;
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u8 PacketBuffer[2048];
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#define NIFI_VER 1
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void Init(int argc, char** argv)
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{
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#if defined(__WIN32__) || defined(UNIX_PORTABLE)
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if (argc > 0 && strlen(argv[0]) > 0)
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{
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int len = strlen(argv[0]);
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while (len > 0)
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{
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if (argv[0][len] == '/') break;
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if (argv[0][len] == '\\') break;
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len--;
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}
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if (len > 0)
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{
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EmuDirectory = new char[len+1];
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strncpy(EmuDirectory, argv[0], len);
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EmuDirectory[len] = '\0';
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}
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else
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{
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EmuDirectory = new char[2];
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strcpy(EmuDirectory, ".");
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}
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}
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else
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{
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EmuDirectory = new char[2];
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strcpy(EmuDirectory, ".");
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}
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#else
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QString confdir;
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QDir config(QStandardPaths::writableLocation(QStandardPaths::ConfigLocation));
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config.mkdir("melonDS");
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confdir = config.absolutePath() + "/melonDS/";
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EmuDirectory = new char[confdir.length() + 1];
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memcpy(EmuDirectory, confdir.toUtf8().data(), confdir.length());
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EmuDirectory[confdir.length()] = '\0';
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#endif
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}
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void DeInit()
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{
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delete[] EmuDirectory;
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}
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void StopEmu()
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{
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emuStop();
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}
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FILE* OpenFile(const char* path, const char* mode, bool mustexist)
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{
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QFile f(path);
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if (mustexist && !f.exists())
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{
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return nullptr;
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}
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QIODevice::OpenMode qmode;
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if (strlen(mode) > 1 && mode[0] == 'r' && mode[1] == '+') {
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qmode = QIODevice::OpenModeFlag::ReadWrite;
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} else if (strlen(mode) > 1 && mode[0] == 'w' && mode[1] == '+') {
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qmode = QIODevice::OpenModeFlag::Truncate | QIODevice::OpenModeFlag::ReadWrite;
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} else if (mode[0] == 'w') {
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qmode = QIODevice::OpenModeFlag::Truncate | QIODevice::OpenModeFlag::WriteOnly;
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} else {
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qmode = QIODevice::OpenModeFlag::ReadOnly;
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}
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f.open(qmode);
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FILE* file = fdopen(dup(f.handle()), mode);
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f.close();
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return file;
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}
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FILE* OpenLocalFile(const char* path, const char* mode)
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{
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QDir dir(path);
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QString fullpath;
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if (dir.isAbsolute())
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{
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// If it's an absolute path, just open that.
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fullpath = path;
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}
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else
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{
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#ifdef PORTABLE
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fullpath = path;
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#else
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// Check user configuration directory
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QDir config(QStandardPaths::writableLocation(QStandardPaths::GenericConfigLocation));
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config.mkdir("melonDS");
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fullpath = config.absolutePath() + "/melonDS/";
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fullpath.append(path);
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#endif
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}
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return OpenFile(fullpath.toUtf8(), mode, mode[0] != 'w');
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}
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void* Thread_Create(void (* func)())
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{
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QThread* t = QThread::create(func);
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t->start();
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return (void*) t;
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}
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void Thread_Free(void* thread)
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{
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QThread* t = (QThread*) thread;
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t->terminate();
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delete t;
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}
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void Thread_Wait(void* thread)
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{
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((QThread*) thread)->wait();
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}
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void* Semaphore_Create()
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{
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return new QSemaphore();
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}
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void Semaphore_Free(void* sema)
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{
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delete (QSemaphore*) sema;
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}
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void Semaphore_Reset(void* sema)
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{
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QSemaphore* s = (QSemaphore*) sema;
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s->acquire(s->available());
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}
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void Semaphore_Wait(void* sema)
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{
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((QSemaphore*) sema)->acquire();
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}
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void Semaphore_Post(void* sema)
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{
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((QSemaphore*) sema)->release();
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}
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void* GL_GetProcAddress(const char* proc)
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{
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return oglGetProcAddress(proc);
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}
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bool MP_Init()
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{
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int opt_true = 1;
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int res;
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#ifdef __WIN32__
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WSADATA wsadata;
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if (WSAStartup(MAKEWORD(2, 2), &wsadata) != 0)
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{
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return false;
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}
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#endif // __WIN32__
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MPSocket = socket(AF_INET, SOCK_DGRAM, 0);
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if (MPSocket < 0)
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{
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return false;
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}
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res = setsockopt(MPSocket, SOL_SOCKET, SO_REUSEADDR, (const char*)&opt_true, sizeof(int));
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if (res < 0)
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{
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closesocket(MPSocket);
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MPSocket = INVALID_SOCKET;
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return false;
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}
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sockaddr_t saddr;
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saddr.sa_family = AF_INET;
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*(u32*)&saddr.sa_data[2] = htonl(Config::SocketBindAnyAddr ? INADDR_ANY : INADDR_LOOPBACK);
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*(u16*)&saddr.sa_data[0] = htons(7064);
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res = bind(MPSocket, &saddr, sizeof(sockaddr_t));
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if (res < 0)
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{
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closesocket(MPSocket);
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MPSocket = INVALID_SOCKET;
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return false;
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}
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res = setsockopt(MPSocket, SOL_SOCKET, SO_BROADCAST, (const char*)&opt_true, sizeof(int));
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if (res < 0)
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{
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closesocket(MPSocket);
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MPSocket = INVALID_SOCKET;
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return false;
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}
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MPSendAddr.sa_family = AF_INET;
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*(u32*)&MPSendAddr.sa_data[2] = htonl(INADDR_BROADCAST);
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*(u16*)&MPSendAddr.sa_data[0] = htons(7064);
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return true;
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}
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void MP_DeInit()
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{
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if (MPSocket >= 0)
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closesocket(MPSocket);
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#ifdef __WIN32__
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WSACleanup();
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#endif // __WIN32__
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}
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int MP_SendPacket(u8* data, int len)
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{
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if (MPSocket < 0)
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return 0;
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if (len > 2048-8)
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{
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printf("MP_SendPacket: error: packet too long (%d)\n", len);
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return 0;
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}
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*(u32*)&PacketBuffer[0] = htonl(0x4946494E); // NIFI
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PacketBuffer[4] = NIFI_VER;
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PacketBuffer[5] = 0;
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*(u16*)&PacketBuffer[6] = htons(len);
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memcpy(&PacketBuffer[8], data, len);
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int slen = sendto(MPSocket, (const char*)PacketBuffer, len+8, 0, &MPSendAddr, sizeof(sockaddr_t));
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if (slen < 8) return 0;
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return slen - 8;
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}
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int MP_RecvPacket(u8* data, bool block)
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{
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if (MPSocket < 0)
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return 0;
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fd_set fd;
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struct timeval tv;
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FD_ZERO(&fd);
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FD_SET(MPSocket, &fd);
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tv.tv_sec = 0;
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tv.tv_usec = block ? 5000 : 0;
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if (!select(MPSocket+1, &fd, 0, 0, &tv))
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{
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return 0;
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}
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sockaddr_t fromAddr;
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socklen_t fromLen = sizeof(sockaddr_t);
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int rlen = recvfrom(MPSocket, (char*)PacketBuffer, 2048, 0, &fromAddr, &fromLen);
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if (rlen < 8+24)
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{
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return 0;
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}
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rlen -= 8;
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if (ntohl(*(u32*)&PacketBuffer[0]) != 0x4946494E)
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{
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return 0;
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}
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if (PacketBuffer[4] != NIFI_VER)
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{
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return 0;
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}
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if (ntohs(*(u16*)&PacketBuffer[6]) != rlen)
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{
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return 0;
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}
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memcpy(data, &PacketBuffer[8], rlen);
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return rlen;
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}
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bool LAN_Init()
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{
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if (Config::DirectLAN)
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{
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if (!LAN_PCap::Init(true))
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return false;
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}
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else
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{
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if (!LAN_Socket::Init())
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return false;
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}
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return true;
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}
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void LAN_DeInit()
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{
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// checkme. blarg
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//if (Config::DirectLAN)
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// LAN_PCap::DeInit();
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//else
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// LAN_Socket::DeInit();
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LAN_PCap::DeInit();
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LAN_Socket::DeInit();
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}
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int LAN_SendPacket(u8* data, int len)
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{
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if (Config::DirectLAN)
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return LAN_PCap::SendPacket(data, len);
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else
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return LAN_Socket::SendPacket(data, len);
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}
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int LAN_RecvPacket(u8* data)
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{
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if (Config::DirectLAN)
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return LAN_PCap::RecvPacket(data);
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else
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return LAN_Socket::RecvPacket(data);
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}
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}
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