/*
	ICQ Corporate protocol plugin for Miranda IM.
	Copyright (C) 2003-2005 Eugene Tarasenko <zlyden13@inbox.ru>

	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, write to the Free Software
	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
	*/

#include "stdafx.h"

ICQ icq;

///////////////////////////////////////////////////////////////////////////////

unsigned short toIcqStatus(unsigned short status)
{
	switch (status) {
	case ID_STATUS_OFFLINE: return ICQ_STATUS_OFFLINE;
	case ID_STATUS_ONLINE: return ICQ_STATUS_ONLINE;
	case ID_STATUS_AWAY: return ICQ_STATUS_AWAY;
	case ID_STATUS_DND: return ICQ_STATUS_DND;
	case ID_STATUS_NA: return ICQ_STATUS_NA;
	case ID_STATUS_OCCUPIED: return ICQ_STATUS_OCCUPIED;
	case ID_STATUS_FREECHAT: return ICQ_STATUS_FREECHAT;
	case ID_STATUS_INVISIBLE: return ICQ_STATUS_PRIVATE;
	}
	return ICQ_STATUS_ONLINE;
}

///////////////////////////////////////////////////////////////////////////////

unsigned short toIdStatus(unsigned short status)
{
	switch (status) {
	case ICQ_STATUS_OFFLINE: return ID_STATUS_OFFLINE;
	case ICQ_STATUS_ONLINE: return ID_STATUS_ONLINE;
	case ICQ_STATUS_AWAY: return ID_STATUS_AWAY;
	case ICQ_STATUS_DND: return ID_STATUS_DND;
	case ICQ_STATUS_NA: return ID_STATUS_NA;
	case ICQ_STATUS_OCCUPIED: return ID_STATUS_OCCUPIED;
	case ICQ_STATUS_FREECHAT: return ID_STATUS_FREECHAT;
	case ICQ_STATUS_PRIVATE: return ID_STATUS_INVISIBLE;
	}
	return ID_STATUS_ONLINE;
}

///////////////////////////////////////////////////////////////////////////////

LRESULT WINAPI messageWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	SOCKET hSocket = (SOCKET)wParam;
	unsigned short netEvents = LOWORD(lParam);
	unsigned long result;

	switch (msg) {
	case WM_NETEVENT_SERVER:
		if (hSocket == icq.udpSocket.handleVal) {
			if (netEvents & FD_READ)
				icq.recvUDP(0);
			break;
		}
		break;

	case WM_NETEVENT_CONNECTION:
		if (hSocket == icq.tcpSocket.handleVal) {
			if (netEvents & FD_ACCEPT)
				icq.recvNewTCP(0);
			break;
		}
		break;

	case WM_NETEVENT_USER:
		if (netEvents & FD_READ) {
			ioctlsocket(hSocket, FIONREAD, &result);
			if (result > 0) icq.recvTCP(hSocket);
		}
		if (netEvents & FD_CLOSE) {
			unsigned int i;
			for (i = 0; i < icqUsers.size(); i++) {
				if (hSocket == icqUsers[i]->socket.handleVal) {
					Netlib_Logf(hNetlibUser, "[tcp] user %d is aborted connection\n", icqUsers[i]->dwUIN);
					icqUsers[i]->socket.closeConnection();
					break;
				}
			}
		}
		break;

	case WM_NETEVENT_TRANSFER:
		if (netEvents & FD_READ) {
			ioctlsocket(hSocket, FIONREAD, &result);
			if (result > 0)
				icq.recvTransferTCP(hSocket);
		}
		if (netEvents & FD_CLOSE) {
			for (size_t i = 0; i < icqTransfers.size(); i++) {
				if (hSocket == icqTransfers[i]->socket.handleVal) {
					Netlib_Logf(hNetlibUser, "[tcp] user %d is aborted file connection\n", icqTransfers[i]->uin);
					ProtoBroadcastAck(protoName, icqTransfers[i]->hContact, ACKTYPE_FILE, ACKRESULT_FAILED, icqTransfers[i], 0);
					delete icqTransfers[i];
					icqTransfers[i] = icqTransfers[icqTransfers.size() - 1];
					icqTransfers.pop_back();
					break;
				}
			}
		}
		break;

	default:
		return DefWindowProc(hWnd, msg, wParam, lParam);
	}

	return 0;
}

///////////////////////////////////////////////////////////////////////////////

void WINAPI pingTimerProc(HWND, UINT, UINT_PTR, DWORD)
{
	icq.ping();
}

///////////////////////////////////////////////////////////////////////////////
//
//  ICQ
//
///////////////////////////////////////////////////////////////////////////////

ICQ::ICQ()
	: tcpSocket(WM_NETEVENT_CONNECTION),
	udpSocket(WM_NETEVENT_SERVER)
{}

///////////////////////////////////////////////////////////////////////////////

bool ICQ::load()
{
	WSADATA data;

	if (WSAStartup(MAKEWORD(2, 2), &data)) {
		MessageBox(nullptr, TranslateT("ICQ Corporate plugin used only WinSock v2.2 or later."), _A2T(protoName), MB_ICONWARNING | MB_OK);
		return false;
	}

	statusVal = ID_STATUS_OFFLINE;
	searchSequenceVal = 0;
	tcpSequenceVal = 0xFFFFFFFE;

	awayMessage = new char[1];
	awayMessage[0] = 0;

	WNDCLASSA wc = { 0, messageWndProc, 0, 0, g_plugin.getInst(), nullptr, nullptr, nullptr, nullptr, protoName };
	if (!RegisterClassA(&wc))
		return false;

	hWnd = CreateWindowExA(0, protoName, nullptr, 0, 0, 0, 0, 0, HWND_MESSAGE, nullptr, g_plugin.getInst(), nullptr);
	if (hWnd == nullptr)
		return false;

	return true;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::unload()
{
	if (statusVal != ID_STATUS_OFFLINE) logoff(false);

	KillTimer(nullptr, pingTimer);
	pingTimer = NULL;

	delete[] awayMessage;

	WSACleanup();

	DestroyWindow(hWnd);
	UnregisterClassA(protoName, g_plugin.getInst());
}

///////////////////////////////////////////////////////////////////////////////

bool ICQ::logon(unsigned short logonStatus)
{
	DBVARIANT dbv;
	char str[128];

	if (!g_plugin.getString("Server", &dbv)) {
		lstrcpyA(str, dbv.pszVal);
		db_free(&dbv);
	}
	else {
		MessageBox(nullptr, TranslateT("You need specify ICQ Corporate login server."), _A2T(protoName), MB_ICONWARNING | MB_OK);
		return false;
	}

	if (!tcpSocket.connected() && !tcpSocket.startServer())
		return false;

	if (!udpSocket.connected()) {
		if (!udpSocket.setDestination(str, db_get_w(0, protoName, "Port", 4000)))
			return false;
		udpSocket.openConnection();
	}

	if (pingTimer == NULL)
		pingTimer = SetTimer(nullptr, 0, PING_FREQUENCY, pingTimerProc);

	updateContactList();

	dwUIN = g_plugin.getDword("UIN", 0);
	if (!g_plugin.getString("Password", &dbv)) {
		lstrcpyA(str, dbv.pszVal);
		db_free(&dbv);
	}

	timeStampLastMessage = 0;
	sequenceVal = 1;

	Packet loginPacket;
	loginPacket << ICQ_VERSION
		<< ICQ_CMDxSND_LOGON
		<< sequenceVal
		<< sequenceVal
		<< dwUIN
		<< (unsigned int)0x00
		<< tcpSocket.localPortVal
		<< str
		<< (unsigned short)0x7A
		<< (unsigned short)0x02
		//				<< LOCALHOST
		<< udpSocket.localIPVal
		<< (unsigned char)0x04
		<< (unsigned int)toIcqStatus(logonStatus)
		<< (unsigned int)0x02
		<< (unsigned int)0x00
		<< (unsigned short)0x13
		<< (unsigned short)0x7A;

	Netlib_Logf(hNetlibUser, "[udp] requesting logon (%d)...\n", sequenceVal);
	sendICQ(udpSocket, loginPacket, ICQ_CMDxSND_LOGON, sequenceVal);

	desiredStatus = logonStatus;
	statusVal = ID_STATUS_CONNECTING;
	ProtoBroadcastAck(protoName, NULL, ACKTYPE_STATUS, ACKRESULT_SUCCESS, (HANDLE)ID_STATUS_OFFLINE, statusVal);

	return true;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::logoff(bool reconnect)
{
	unsigned int i;

	// if not connected then don't both logging off
	if (udpSocket.connected()) {
		Packet logoffPacket;
		logoffPacket << ICQ_VERSION
			<< ICQ_CMDxSND_LOGOFF
			<< (unsigned int)0x00
			<< dwUIN
			<< (unsigned int)0x00
			<< "B_USER_DISCONNECTED"
			<< (unsigned short)0x0005;

		Netlib_Logf(hNetlibUser, "[udp] logging off.\n");
		udpSocket.sendPacket(logoffPacket);
		//		udpSocket.closeConnection();

		// close all open events
		for (i = 0; i < icqEvents.size(); i++) delete icqEvents[i];
		icqEvents.clear();
	}

	statusVal = ID_STATUS_OFFLINE;

	if (reconnect) logon(desiredStatus);
	else {
		udpSocket.closeConnection();
		tcpSocket.closeConnection();

		updateContactList();
		ProtoBroadcastAck(protoName, NULL, ACKTYPE_STATUS, ACKRESULT_SUCCESS, (HANDLE)ID_STATUS_ONLINE, statusVal);
	}
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::ping()
{
	if (statusVal > ID_STATUS_OFFLINE) {
		Packet pingPacket;
		pingPacket << ICQ_VERSION
			<< ICQ_CMDxSND_PING
			<< sequenceVal
			<< (unsigned short)0x00
			<< dwUIN
			<< (unsigned int)0x00;

		Netlib_Logf(hNetlibUser, "[udp] keep alive (%d)\n", sequenceVal);
		sendICQ(udpSocket, pingPacket, ICQ_CMDxSND_PING, sequenceVal);
	}

	if (statusVal == ID_STATUS_OFFLINE && desiredStatus != ID_STATUS_OFFLINE) logoff(true);
}

///////////////////////////////////////////////////////////////////////////////

ICQEvent *ICQ::sendICQ(Socket &socket, Packet &packet, unsigned short cmd, unsigned long sequence,
	unsigned long _uin, unsigned short subCmd, int reply)
{
	ICQEvent *result;

	if (!socket.connected())
		return nullptr;

	if (cmd != ICQ_CMDxTCP_START)
		sequenceVal++;

	icqEvents.push_back(result = new ICQEvent(cmd, subCmd, sequence, _uin, &socket, &packet, reply));
	if (!result->start()) {
		cancelEvent(result);
		return nullptr;
	}
	return result;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::doneEvent(bool gotAck, int hSocket, int sequence)
{
	unsigned int i;
	ICQEvent *e = nullptr;

	for (i = 0; i < icqEvents.size(); i++) {
		e = icqEvents[i];
		if (e->isEvent(hSocket, sequence))
			break;
	}
	if (i == icqEvents.size())
		return;

	e->stop();
	if (!gotAck || e->reply == 0) {
		icqEvents[i] = icqEvents[icqEvents.size() - 1];
		icqEvents.pop_back();
	}

	if (!gotAck) Netlib_Logf(hNetlibUser, "[   ] sending failed (%d)\n", sequence);

	switch (e->cmd) {
	case ICQ_CMDxTCP_START:
		doneUserFcn(gotAck, e);
		break;
	case ICQ_CMDxSND_THRUxSERVER:
		doneUserFcn(gotAck, e);
		break;
	case ICQ_CMDxSND_USERxGETxINFO:
		//emit doneUserInfo(true, e->uin);
		break;
	case ICQ_CMDxSND_SETxSTATUS:
		if (gotAck) {
			int oldStatus = statusVal;
			statusVal = desiredStatus;
			ProtoBroadcastAck(protoName, NULL, ACKTYPE_STATUS, ACKRESULT_SUCCESS, (HANDLE)oldStatus, statusVal);
		}
		break;
	case ICQ_CMDxSND_PING:
		//if (!gotAck) emit doneOwnerFcn(false, cmd);
		break;
	case ICQ_CMDxSND_USERxADD:
		//if (!gotAck) emit doneOwnerFcn(false, cmd);
		break;
	case ICQ_CMDxSND_AUTHORIZE:
		//emit doneOwnerFcn(gotAck, cmd);
		break;
	case ICQ_CMDxSND_LOGON:
		if (!gotAck) {
			logoff(false);
			//emit doneOwnerFcn(false, cmd);
		}
		break;
	case ICQ_CMDxSND_USERxLIST:
		//if (!gotAck) emit doneOwnerFcn(false, cmd);
		break;
	case ICQ_CMDxSND_VISxLIST:
		//if (!gotAck) emit doneOwnerFcn(false, cmd);
		break;
	case ICQ_CMDxSND_SYSxMSGxREQ:
		//if (!gotAck) emit doneOwnerFcn(false, cmd);
		break;
	case ICQ_CMDxSND_SYSxMSGxDONExACK:
		//if (!gotAck) emit doneOwnerFcn(false, cmd);
		break;
	}

	if (!gotAck && e->cmd != ICQ_CMDxTCP_START && e->cmd != ICQ_CMDxSND_LOGON)
		logoff(true);

	if (!gotAck || e->reply == 0)
		delete e;
	else
		e->reply--;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::cancelEvent(ICQEvent *&e)
{
	unsigned int i;

	for (i = 0; i < icqEvents.size(); i++) if (icqEvents[i] == e)
		break;
	if (i == icqEvents.size())
		return;

	e->stop();

	icqEvents[i] = icqEvents[icqEvents.size() - 1];
	icqEvents.pop_back();

	delete e;
	e = nullptr;
}

///////////////////////////////////////////////////////////////////////////////

unsigned short ICQ::processUdpPacket(Packet &packet)
{
	unsigned short version, command, newCommand, theSequence, theSequence1, searchSequence, junkShort;
	unsigned int checkUin, userIP, realIP, junkl, newStatus, userPort, timedataStamp;
	unsigned char junkChar;
	char *message = nullptr;
	ICQUser *u;
	ICQEvent *e;

	// read in the standard UDP header info
	packet >> version
		>> command
		>> theSequence
		>> theSequence1
		>> checkUin
		>> junkl;

	if (version != ICQ_VERSION) {
		Netlib_Logf(hNetlibUser, "[udp] bad version number %d\n", version);
		return 0xFFFF;
	}

	switch (command) {
	case ICQ_CMDxRCV_LOGIN_ERR:
		Netlib_Logf(hNetlibUser, "[udp] error loging to server.\n");
		ackUDP(theSequence);

		packet >> message;

		Netlib_Logf(hNetlibUser, "%s\n", message);
		MessageBoxA(nullptr, message, protoName, MB_ICONERROR | MB_OK);
		delete[] message;
		break;

	case ICQ_CMDxRCV_USERxONLINE: // initial user status packet
		packet >> checkUin;

		Netlib_Logf(hNetlibUser, "[udp] user %d is online\n", checkUin);
		ackUDP(theSequence);

		if ((u = getUserByUIN(checkUin, false)) == nullptr) break;

		packet >> userIP
			>> userPort
			>> realIP
			>> junkChar
			>> newStatus;

		u->socket.closeConnection();
		u->socket.setDestination(userIP, userPort);
		u->setStatus(toIdStatus(newStatus));
		u->setInfo("IP", (unsigned int)ntohl(userIP));
		u->setInfo("Port", (unsigned short)userPort);
		u->setInfo("RealIP", (unsigned int)ntohl(realIP));
		break;

	case ICQ_CMDxRCV_USERxOFFLINE: // user just went offline packet
		packet >> checkUin;

		Netlib_Logf(hNetlibUser, "[udp] user %d is offline\n", checkUin);
		ackUDP(theSequence);

		if ((u = getUserByUIN(checkUin, false)) == nullptr) break;

		u->setStatus(ID_STATUS_OFFLINE);
		u->socket.closeConnection();
		break;

	case ICQ_CMDxRCV_USERxBASICxINFO:
	case ICQ_CMDxRCV_USERxINFO:
	case ICQ_CMDxRCV_USERxWORKxINFO:
	case ICQ_CMDxRCV_USERxWORKxPAGE:
	case ICQ_CMDxRCV_USERxHOMExINFO:
	case ICQ_CMDxRCV_USERxHOMExPAGE:
		Netlib_Logf(hNetlibUser, "[udp] user information packet (%d)\n", theSequence);
		ackUDP(theSequence);

		if ((e = getEvent(udpSocket.handleVal, theSequence1)) == nullptr) break;
		checkUin = e->uin;
		if ((u = getUserByUIN(checkUin, false)) == nullptr) break;

		char *buffer;
		buffer = new char[1024];

		switch (command) {
		case ICQ_CMDxRCV_USERxBASICxINFO:
		case ICQ_CMDxRCV_USERxINFO:
			packet >> buffer;
			u->setInfo("Nick", buffer);
			packet >> buffer;
			u->setInfo("FirstName", buffer);
			packet >> buffer;
			u->setInfo("LastName", buffer);
			packet >> buffer;
			u->setInfo("e-mail", buffer);
			break;

		case ICQ_CMDxRCV_USERxWORKxINFO:
			packet >> buffer;
			u->setInfo("CompanyStreet", buffer);
			packet >> buffer;
			u->setInfo("CompanyCity", buffer);
			packet >> buffer;
			u->setInfo("CompanyState", buffer);
			packet >> junkShort;
			u->setInfo("CompanyCountry", junkShort);
			packet >> buffer;
			u->setInfo("Company", buffer);
			packet >> buffer;
			u->setInfo("CompanyPosition", buffer);
			packet >> junkl;
			packet >> buffer;
			u->setInfo("CompanyPhone", buffer);
			packet >> buffer;
			u->setInfo("CompanyFax", buffer);
			packet >> buffer;
			packet >> junkl;
			if (junkl && junkl != 0xFFFFFFFF) _itoa(junkl, buffer, 10);
			else buffer[0] = 0;
			u->setInfo("CompanyZIP", buffer);
			break;

		case ICQ_CMDxRCV_USERxWORKxPAGE:
			packet >> buffer;
			u->setInfo("CompanyHomepage", buffer);
			break;

		case ICQ_CMDxRCV_USERxHOMExINFO:
			packet >> buffer;
			u->setInfo("Street", buffer);
			packet >> buffer;
			u->setInfo("City", buffer);
			packet >> buffer;
			u->setInfo("State", buffer);
			packet >> junkShort;
			u->setInfo("Country", junkShort);
			packet >> buffer;
			u->setInfo("Phone", buffer);
			packet >> buffer;
			u->setInfo("Fax", buffer);
			packet >> buffer;
			u->setInfo("Cellular", buffer);
			packet >> junkl;
			if (junkl && junkl != 0xFFFFFFFF) _itoa(junkl, buffer, 10);
			else buffer[0] = 0;
			u->setInfo("ZIP", buffer);
			packet >> junkChar;
			if (junkChar == 1) junkChar = 'F';
			if (junkChar == 2) junkChar = 'M';
			u->setInfo("Gender", junkChar);
			packet >> junkShort;
			u->setInfo("Age", (unsigned char)junkShort);
			packet >> junkChar;
			u->setInfo("BirthDay", junkChar);
			packet >> junkChar;
			u->setInfo("BirthMonth", junkChar);
			packet >> junkShort;
			u->setInfo("BirthYear", junkShort);
			break;

		case ICQ_CMDxRCV_USERxHOMExPAGE:
			packet >> buffer;
			u->setInfo("Homepage", buffer);
			break;
		}

		if (e->reply == 0)
			ProtoBroadcastAck(protoName, u->hContact, ACKTYPE_GETINFO, ACKRESULT_SUCCESS, nullptr, 0);
		doneEvent(true, udpSocket.handleVal, theSequence1);
		delete[] buffer;
		break;

	case ICQ_CMDxRCV_USERxINVALIDxUIN: // not a good uin
		Netlib_Logf(hNetlibUser, "[udp] invalid uin\n");
		ackUDP(theSequence);

		if ((e = getEvent(udpSocket.handleVal, theSequence1)) == nullptr) break;

		checkUin = e->uin;
		Netlib_Logf(hNetlibUser, "invalid uin: %d\n", checkUin);
		break;

	case ICQ_CMDxRCV_USERxSTATUS: // user changed status packet
		packet >> checkUin;

		Netlib_Logf(hNetlibUser, "[udp] user %d changed status\n", checkUin);
		ackUDP(theSequence);

		packet >> newStatus;

		if ((u = getUserByUIN(checkUin, false)) == nullptr) break;
		u->setStatus(toIdStatus(newStatus));
		break;

	case ICQ_CMDxRCV_USERxLISTxDONE: // end of user list
		Netlib_Logf(hNetlibUser, "[udp] end of user list.\n");
		ackUDP(theSequence);
		break;

	case ICQ_CMDxRCV_SEARCHxFOUND: // user found in search
		Netlib_Logf(hNetlibUser, "[udp] search found user\n");
		ackUDP(theSequence);

		char *alias, *firstName, *lastName, *email;
		unsigned char auth;

		alias = nullptr;
		firstName = nullptr;
		lastName = nullptr;
		email = nullptr;
		packet >> checkUin >> alias >> firstName >> lastName >> email >> auth;
		{
			ICQSEARCHRESULT psr = { 0 };
			psr.hdr.cbSize = sizeof(psr);
			psr.hdr.nick.a = alias;
			psr.hdr.firstName.a = firstName;
			psr.hdr.lastName.a = lastName;
			psr.hdr.email.a = email;
			psr.uin = checkUin;
			psr.auth = auth;
			ProtoBroadcastAck(protoName, NULL, ACKTYPE_SEARCH, ACKRESULT_DATA, (HANDLE)1, (LPARAM)&psr);
		}

		delete[] alias;
		delete[] firstName;
		delete[] lastName;
		delete[] email;
		break;

	case ICQ_CMDxRCV_SEARCHxDONE:
		Netlib_Logf(hNetlibUser, "[udp] search finished.\n");
		ackUDP(theSequence);

		packet >> searchSequence;
		searchSequence = theSequence1;

		ProtoBroadcastAck(protoName, NULL, ACKTYPE_SEARCH, ACKRESULT_SUCCESS, (HANDLE)1, 0);
		break;

	case ICQ_CMDxRCV_SYSxMSGxOFFLINE: // offline system message, now have to check the sub-command
		Netlib_Logf(hNetlibUser, "[udp] offline system message\n");
		ackUDP(theSequence);

		packet >> checkUin
			>> timedataStamp
			>> newCommand;

		timeStampLastMessage = timedataStamp;
		timedataStamp = TimeZone_ToLocal(timedataStamp);

		processSystemMessage(packet, checkUin, newCommand, timedataStamp);
		break;

	case ICQ_CMDxRCV_SYSxMSGxONLINE: // online system message, now have to check the sub-command
		Netlib_Logf(hNetlibUser, "[udp] online system message\n");
		ackUDP(theSequence);

		packet >> checkUin
			>> newCommand;

		processSystemMessage(packet, checkUin, newCommand, time(0));
		break;

	case ICQ_CMDxRCV_SYSxMSGxDONE: // end of system messages
		Netlib_Logf(hNetlibUser, "[udp] end of system messages.\n");
		ackUDP(theSequence);

		if (timeStampLastMessage) {
			ackSYS(timeStampLastMessage);
			timeStampLastMessage = 0;
		}
		break;

	case ICQ_CMDxRCV_BROADCASTxMULTI:
		Netlib_Logf(hNetlibUser, "[udp] broadcast multi-packet (%d)\n", theSequence);
		ackUDP(theSequence);

		unsigned int i;
		unsigned char j, frameNo, frameSize;
		bool found;

		packet >> frameNo
			>> frameSize;

		icqEvents.push_back(new ICQEvent(ICQ_CMDxRCV_BROADCASTxMULTI, (unsigned short)frameNo, theSequence1, 0, &udpSocket, &packet, 0));

		{
			Packet multiPacket;

			for (j = 0; j < frameSize; j++) {
				found = false;
				for (i = 0; i < icqEvents.size(); i++) {
					e = icqEvents[i];
					if (e->cmd == ICQ_CMDxRCV_BROADCASTxMULTI && e->subCmd == j && e->isEvent(udpSocket.handleVal, theSequence1)) {
						multiPacket << e->packet;
						found = true;
						break;
					}
				}
				if (!found)
					break;
			}

			if (j == frameSize) {
				for (i = 0; i < icqEvents.size(); i++) {
					e = icqEvents[i];
					if (e->cmd == ICQ_CMDxRCV_BROADCASTxMULTI && e->isEvent(udpSocket.handleVal, theSequence1)) {
						icqEvents[i] = icqEvents[icqEvents.size() - 1];
						icqEvents.pop_back();

						delete e;
					}
				}

				multiPacket.reset();
				processUdpPacket(multiPacket);
			}
		}
		break;

	case ICQ_CMDxRCV_BROADCASTxOFFLINE:
		Netlib_Logf(hNetlibUser, "[udp] offline broadcast message (%d)\n", theSequence);
		ackUDP(theSequence);

		packet >> checkUin
			>> timedataStamp
			>> newCommand;

		g_plugin.setDword("LastBroadcastTime", timedataStamp);
		timedataStamp = TimeZone_ToLocal(timedataStamp);

		processSystemMessage(packet, checkUin, newCommand, timedataStamp);
		break;

	case ICQ_CMDxRCV_BROADCASTxONLINE:
		Netlib_Logf(hNetlibUser, "[udp] online broadcast message (%d)\n", theSequence);
		ackUDP(theSequence);

		packet >> checkUin
			>> newCommand;

		processSystemMessage(packet, checkUin, newCommand, time(0));
		break;

	case ICQ_CMDxRCV_BROADCASTxDONE:
		Netlib_Logf(hNetlibUser, "[udp] end of broadcast messages.\n");
		ackUDP(theSequence);
		break;

	case ICQ_CMDxRCV_SETxOFFLINE: // we got put offline by mirabilis for some reason
		Netlib_Logf(hNetlibUser, "[udp] kicked offline.\n");
		logoff(true);
		break;

	case ICQ_CMDxRCV_ACK: // icq acknowledgement
		Netlib_Logf(hNetlibUser, "[udp] received ack (%d)\n", theSequence);
		doneEvent(true, udpSocket.handleVal, theSequence);
		break;

	case ICQ_CMDxRCV_ERROR: // icq says go away
		Netlib_Logf(hNetlibUser, "[udp] server says bugger off.\n");
		logoff(true);
		break;

	case ICQ_CMDxRCV_HELLO: // hello packet from mirabilis received on logon
		Netlib_Logf(hNetlibUser, "[udp] received hello.\n");
		ackUDP(theSequence);

		int oldStatus;

		requestSystemMsg();
		requestBroadcastMsg();

		//	pingTimer.start(PING_FREQUENCY * 1000);
		oldStatus = statusVal;
		statusVal = desiredStatus;
		ProtoBroadcastAck(protoName, NULL, ACKTYPE_STATUS, ACKRESULT_SUCCESS, (HANDLE)oldStatus, statusVal);

		updateContactList();
		// sendVisibleList();
		// sendInvisibleList();
		break;

	case ICQ_CMDxRCV_WRONGxPASSWD: // incorrect password sent in logon
		Netlib_Logf(hNetlibUser, "[udp] incorrect password.\n");
		ProtoBroadcastAck(protoName, NULL, ACKTYPE_LOGIN, ACKRESULT_FAILED, nullptr, LOGINERR_WRONGPASSWORD);
		MessageBox(nullptr, TranslateT("Your ICQ Corp number and password combination was rejected by the ICQ Corporate server. Please go to Options -> Network -> ICQCorp and try again."), _A2T(protoName), MB_ICONERROR | MB_OK);
		break;

	case ICQ_CMDxRCV_BUSY: // server too busy to respond
		Netlib_Logf(hNetlibUser, "[udp] server busy, try again in a few minutes.\n");
		break;

	default: // what the heck is this packet?
		Netlib_Logf(hNetlibUser, "[udp] unknown packet:\n%s", packet.print());
		ackUDP(theSequence);
		break;
	}

	return command;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::processSystemMessage(Packet &packet, unsigned long checkUin, unsigned short newCommand, time_t timeSent)
{
	char *message/*, *sysMsg*/;
	ICQUser *u;
	unsigned int i, /*j,*/ messageLen;

	u = getUserByUIN(checkUin);

	message = nullptr;
	packet >> message;

	switch (newCommand) {
	case ICQ_CMDxRCV_SYSxMSG:
		Netlib_Logf(hNetlibUser, "message through server from %d\n", checkUin);
		addMessage(u, message, timeSent);
		break;

	case ICQ_CMDxRCV_SYSxBROADCAST:
		Netlib_Logf(hNetlibUser, "broadcast message from %d\n", checkUin);

		messageLen = (unsigned int)mir_strlen(message);
		for (i = 0; i < messageLen; i++)
			if (message[i] == -2) // 0xFE
				message[i] = '\n';

		addMessage(u, message, timeSent);
		break;
		/*
			case ICQ_CMDxRCV_SYSxAUTHxREQ:  // system message: authorisation request
			// 02 00 04 01 08 00 8F 76 20 00 06 00 41 00 41 70 6F 74 68 65 6F 73 69 73
			// FE 47 72 61 68 61 6D FE 52 6F 66 66 FE 67 72 6F 66 66 40 75 77 61 74 65
			// 72 6C 6F 6F 2E 63 61 FE 31 FE 50 6C 65 61 73 65 20 61 75 74 68 6F 72 69
			// 7A 65 20 6D 65 2E 00
			Netlib_Logf(hNetlibUser, "authorization request from %ld.\n", checkUin);
			packet >> messageLen;
			message = new char[messageLen + 1];
			for (i=0; i<=messageLen; i++)
			{
			packet >> message[i];
			if (message[i] == -2)
			message[i] = '\n';
			}

			sysMsg = new char[messageLen + 128];
			sprintf(sysMsg, "(%s) Authorization request from %ld:\n%s", sm.timeRec(), checkUin, message);
			icqOwner.addMessage(sysMsg, timeSent);
			sprintf(sysMsg, "Authorization request from %ld:\n%s", checkUin, message);
			addToSystemMessageHistory(sysMsg);
			playSound(soundSysMsg);
			delete sysMsg;
			delete message;
			break;

			case ICQ_CMDxRCV_SYSxAUTHxGRANTED: // system message: authorization granted

			outputWindow->wprintf("  (%s) Authorization granted from %ld.", sm.timeRec(), checkUin);
			packet >> messageLen;
			message = new char[messageLen + 1];
			for (i = 0; i <= messageLen; i++)
			{
			packet >> message[i];
			if (message[i] == -2) message[i] = '\n';
			}

			sysMsg = new char[messageLen + 128];
			sprintf(sysMsg, "(%s) Authorization granted from %ld:\n%s", sm.timeRec(), checkUin, message);
			icqOwner.addMessage(sysMsg, timeSent);
			sprintf(sysMsg, "Authorization granted from %ld:\n%s", checkUin, message);
			addToSystemMessageHistory(sysMsg);
			playSound(soundSysMsg);

			delete sysMsg;
			delete message;
			break;
			*/
			/*
				case ICQ_CMDxRCV_SYSxADDED:  // system message: added to a contact list
				outputWindow->wprintf("  %C(%s) user %C%ld%C added you to their contact list.", COLOR_RECEIVE, sm.timeRec(), COLOR_DATA, checkUin, COLOR_RECEIVE);
				sysMsg = new char[128];
				sprintf(sysMsg, "(%s) User %ld added you to their contact list.", sm.timeRec(), checkUin);
				icqOwner.addMessage(sysMsg, timeSent);
				sprintf(sysMsg, "User %ld added you to their contact list.", checkUin);
				addToSystemMessageHistory(sysMsg);
				delete sysMsg;
				playSound(soundSysMsg);
				*/
				/* there is a bunch of info about the given user in the packet but the read routine to get
				  at it is totally broken right now
				  int infoLen, j;
				  packet >> infoLen;

				  // declare all the strings we will need for reading in the user data
				  char *userInfo, *aliasField, *firstNameField, *lastNameField, *emailField;
				  userInfo =	   new char[infoLen];
				  aliasField =	 new char[infoLen];
				  firstNameField = new char[infoLen];
				  lastNameField =  new char[infoLen];
				  emailField =	 new char[infoLen];

				  // read in the user data from the packet
				  for (i = 0; i < infoLen; i++) packet >> userInfo[i];

				  // parse the user info string for the four fields
				  i = j = 0;
				  do { aliasField[j] = userInfo[i];	 i++; j++;} while (userInfo[i] != -2);
				  aliasField[j] = '\0'; j = 0;
				  do { firstNameField[j] = userInfo[i]; i++; j++;} while (userInfo[i] != -2);
				  firstNameField[j] = '\0';  j = 0;
				  do { lastNameField[j] = userInfo[i];  i++; j++;} while (userInfo[i] != -2);
				  lastNameField[j] = '\0';  j = 0;
				  do { emailField[j] = userInfo[i];	 i++; j++;} while (i < infoLen);
				  emailField[j] = '\0';

				  *outputWindow << "  " << aliasField << " (" << firstNameField << " " << lastNameField << "), " << emailField << ".";

				  delete userInfo; delete aliasField; delete firstNameField; delete lastNameField; delete emailField;
				  break;
				  */

	default:
		Netlib_Logf(hNetlibUser, "[udp] unknown system packet:\n%s", packet.print());
		break;
	}

	delete[] message;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::ackUDP(unsigned short theSequence)
{
	Packet packet;
	packet << ICQ_VERSION
		<< ICQ_CMDxSND_ACK
		<< theSequence
		<< (unsigned short)0x00
		<< dwUIN
		<< (unsigned int)0x00;

	Netlib_Logf(hNetlibUser, "[udp] sending ack (%d)\n", theSequence);
	udpSocket.sendPacket(packet);
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::ackSYS(unsigned int timeStamp)
{
	Packet packet;
	packet << ICQ_VERSION
		<< ICQ_CMDxSND_SYSxMSGxDONExACK
		<< sequenceVal
		<< sequenceVal
		<< dwUIN
		<< (unsigned int)0x00
		<< timeStamp;

	Netlib_Logf(hNetlibUser, "[udp] sending system message ack (%d)\n", sequenceVal);
	sendICQ(udpSocket, packet, ICQ_CMDxSND_SYSxMSGxDONExACK, sequenceVal);
}

///////////////////////////////////////////////////////////////////////////////

ICQUser *ICQ::getUserByUIN(unsigned long _uin, bool allowAdd)
{
	unsigned long i;
	ICQUser *u;

	for (i = 0; i < icqUsers.size(); i++) {
		u = icqUsers[i];
		if (u->dwUIN == _uin)
			return u;
	}

	if (allowAdd) {
		Netlib_Logf(hNetlibUser, "unknown user %d, adding them to your list\n", _uin);
		return addUser(_uin, false);
	}

	Netlib_Logf(hNetlibUser, "ICQ sent unknown user %d\n", _uin);
	return nullptr;
}

///////////////////////////////////////////////////////////////////////////////

ICQUser *ICQ::getUserByContact(MCONTACT hContact)
{
	for (size_t i = 0; i < icqUsers.size(); i++) {
		ICQUser *u = icqUsers[i];
		if (u->hContact == hContact)
			return u;
	}
	return nullptr;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::requestSystemMsg()
{
	// request offline system messages
	// 02 00 4C 04 02 00 50 A5 82 00

	Packet packet;
	packet << ICQ_VERSION
		<< ICQ_CMDxSND_SYSxMSGxREQ
		<< sequenceVal
		<< sequenceVal
		<< dwUIN
		<< (unsigned int)0x00;

	Netlib_Logf(hNetlibUser, "[udp] sending offline system messages request (%d)...\n", sequenceVal);
	sendICQ(udpSocket, packet, ICQ_CMDxSND_SYSxMSGxREQ, sequenceVal);
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::requestBroadcastMsg()
{
	unsigned int timeStamp = g_plugin.getDword("LastBroadcastTime", 0);

	Packet packet;
	packet << ICQ_VERSION
		<< ICQ_CMDxSND_BROADCASTxREQ
		<< sequenceVal
		<< sequenceVal
		<< dwUIN
		<< (unsigned int)0x00
		<< timeStamp
		<< (unsigned int)0x00;

	Netlib_Logf(hNetlibUser, "[udp] sending offline broadcast messages request (%d)...\n", sequenceVal);
	sendICQ(udpSocket, packet, ICQ_CMDxSND_SYSxMSGxREQ, sequenceVal);
}

///////////////////////////////////////////////////////////////////////////////

bool ICQ::setStatus(unsigned short newStatus)
{
	if (!udpSocket.connected())
		return false;

	Packet packet;
	packet << ICQ_VERSION
		<< ICQ_CMDxSND_SETxSTATUS
		<< sequenceVal
		<< sequenceVal
		<< dwUIN
		<< (unsigned int)0x00
		<< toIcqStatus(newStatus);

	Netlib_Logf(hNetlibUser, "[udp] sending set status packet (%d)\n", sequenceVal);
	sendICQ(udpSocket, packet, ICQ_CMDxSND_SETxSTATUS, sequenceVal);

	desiredStatus = newStatus;
	return true;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::updateContactList()
{
	char *proto;
	unsigned int i;
	int userCount;
	//HANDLE hContact;
	ICQUser *u;

	for (auto &hContact : Contacts()) {
		proto = Proto_GetBaseAccountName(hContact);
		if (proto && !mir_strcmp(proto, protoName)) {
			if ((u = getUserByContact(hContact)) == nullptr) {
				u = new ICQUser();
				u->hContact = hContact;
				u->dwUIN = g_plugin.getDword(hContact, "UIN", 0);
				icqUsers.push_back(u);
			}
			if (statusVal <= ID_STATUS_OFFLINE)
				u->setStatus(ID_STATUS_OFFLINE);
			else
				u->statusVal = g_plugin.getWord(hContact, "Status", ID_STATUS_OFFLINE);
		}
	}

	if (statusVal <= ID_STATUS_OFFLINE)
		return;

	// create user info packet
	Packet userPacket;
	for (i = 0; i < icqUsers.size();) {
		userCount = (unsigned int)icqUsers.size() - i;
		if (userCount > 100)
			userCount = 100;

		userPacket.clearPacket();
		userPacket << ICQ_VERSION
			<< ICQ_CMDxSND_USERxLIST
			<< sequenceVal
			<< sequenceVal
			<< dwUIN
			<< (unsigned int)0x00
			<< (unsigned char)userCount;

		for (; userCount > 0; userCount--) userPacket << icqUsers[i++]->dwUIN;

		// send user info packet
		Netlib_Logf(hNetlibUser, "[udp] sending contact list (%d)...\n", sequenceVal);
		sendICQ(udpSocket, userPacket, ICQ_CMDxSND_USERxLIST, sequenceVal);
	}
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::updateUserList(ICQUser* /*u*/, char /*list*/, char /*add*/)
{
	/*
		Packet userPacket;
		userPacket << ICQ_VERSION
		<< ICQ_CMDxSND_UPDATExLIST
		<< sequenceVal
		<< sequenceVal
		<< uin
		<< (unsigned int)0x00
		<< u->uin
		<< list
		<< add;

		Netlib_Logf(hNetlibUser, "[udp] update user list (%d)\n", sequenceVal);
		sendICQ(udpSocket, userPacket, ICQ_CMDxSND_UPDATExLIST, sequenceVal);
		*/
}

///////////////////////////////////////////////////////////////////////////////

ICQUser* ICQ::addUser(unsigned int uin, bool persistent)
{
	unsigned int i;
	ICQUser *u;

	for (i = 0; i < icqUsers.size(); i++) {
		u = icqUsers[i];
		if (u->dwUIN == uin) {
			if (persistent) {
				Contact::PutOnList(u->hContact);
				Contact::Hide(u->hContact, false);
			}
			return u;
		}
	}

	u = new ICQUser();
	u->dwUIN = uin;
	u->hContact = db_add_contact();
	icqUsers.push_back(u);

	Proto_AddToContact(u->hContact, protoName);
	u->setInfo("UIN", uin);

	if (persistent)
		getUserInfo(u, true);
	else {
		Contact::RemoveFromList(u->hContact);
		Contact::Hide(u->hContact);
	}

	updateContactList();
	return u;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::addNewUser(ICQUser*)
{
	/*
		// update the users info from the server
		if (statusVal != ICQ_STATUS_OFFLINE)
		{
		Packet packet;  // alert server to new user

		packet << ICQ_VERSION
		<< ICQ_CMDxSND_USERxADD
		<< sequenceVal
		<< sequenceVal
		<< uin
		<< (unsigned int)0x00
		<< u->uin;

		Netlib_Logf(hNetlibUser, "[udp] alerting server to new user (%d)...\n", sequenceVal);
		sendICQ(udpSocket, packet, ICQ_CMDxSND_USERxADD, sequenceVal);

		//	  getUserInfo(u);
		}
		*/
	updateContactList();
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::removeUser(ICQUser *u)
{
	unsigned int i;

	for (i = 0; i < icqUsers.size(); i++) if (icqUsers[i] == u) break;
	if (i == icqUsers.size()) return;

	icqUsers[i] = icqUsers[icqUsers.size() - 1];
	icqUsers.pop_back();

	delete u;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::startSearch(unsigned char skrit, unsigned char smode, char *sstring, unsigned int s)
{
	Packet packet;
	packet << ICQ_VERSION
		<< ICQ_CMDxSND_SEARCHxSTART
		<< sequenceVal
		<< (unsigned short)s
		//		   << (unsigned short)(icqOwner.sequence1())
		<< dwUIN
		<< (unsigned int)0x00
		<< (unsigned char)0xFF
		<< skrit
		<< (unsigned char)0x00
		<< smode
		<< sstring;

	Netlib_Logf(hNetlibUser, "[udp] starting search for user (%d)...\n", s);
	sendICQ(udpSocket, packet, ICQ_CMDxSND_SEARCHxSTART, sequenceVal);
}

///////////////////////////////////////////////////////////////////////////////

ICQEvent *ICQ::send(ICQUser *u, unsigned short cmd, char *cmdStr, char *m)
{
	ICQEvent *result;

	if (u->statusVal > ID_STATUS_OFFLINE && (result = sendTCP(u, cmd, cmdStr, m)) != nullptr) return result;
	else return sendUDP(u, cmd, cmdStr, m);
}

///////////////////////////////////////////////////////////////////////////////

bool ICQ::openConnection(TCPSocket &socket)
{
	Netlib_Logf(hNetlibUser, "[tcp] connecting to %s on port %d...\n", inet_ntoa(*(in_addr*)&socket.remoteIPVal), socket.remotePortVal);
	socket.openConnection();

	if (!socket.connected()) {
		Netlib_Logf(hNetlibUser, "[tcp] connect failed\n");
		return false;
	}

	Netlib_Logf(hNetlibUser, "[tcp] connection successful\n");

	Packet packet;
	//	packet << ICQ_CMDxTCP_HANDSHAKE3
	packet << (unsigned char)0xFF
		<< (unsigned int)0x02
		<< (unsigned int)0x00
		//		   << (unsigned long)tcpSocket.localPortVal
		<< dwUIN
		<< socket.localIPVal
		<< socket.localIPVal
		<< (unsigned char)0x04
		<< (unsigned int)0x00;
	//		   << (unsigned long)tcpSocket.localPortVal;

	Netlib_Logf(hNetlibUser, "[tcp] sending handshake\n");
	if (!socket.sendPacket(packet)) {
		Netlib_Logf(hNetlibUser, "[tcp] send failed\n");
		return false;
	}

	Netlib_Logf(hNetlibUser, "[tcp] setup completed\n");
	return true;
}

///////////////////////////////////////////////////////////////////////////////

ICQEvent *ICQ::sendTCP(ICQUser *u, unsigned short cmd, char *cmdStr, char *m)
{
	if (!u->socket.connected() && !openConnection(u->socket))
		return nullptr;

	unsigned int status;
	switch (statusVal) {
	case ID_STATUS_ONLINE: status = 0x00100000; break;
	case ID_STATUS_FREECHAT: status = 0x00000000; break;  // ??
	case ID_STATUS_AWAY: status = 0x01100000; break;
	case ID_STATUS_NA: status = 0x00100000; break;
	case ID_STATUS_DND: status = 0x00100000; break;
	case ID_STATUS_OCCUPIED: status = 0x02100000; break;
	case ID_STATUS_INVISIBLE: status = 0x00900000; break;	  // ??
	default: status = 0x00100000; break;
	}

	Packet packet;
	packet << dwUIN
		<< (unsigned short)0x02			// ICQ_VERSION
		<< ICQ_CMDxTCP_START				 // ICQ_CMDxTCP_ACK, ICQ_CMDxTCP_START, ICQ_CMDxTCP_CANCEL
		<< (unsigned short)0x00
		<< dwUIN
		<< cmd
		<< m
		<< udpSocket.localIPVal
		<< udpSocket.localIPVal
		<< tcpSocket.localPortVal
		<< (unsigned char)0x04
		<< status
		<< tcpSequenceVal--;

	Netlib_Logf(hNetlibUser, "[tcp] sending %s (%d)\n", cmdStr, tcpSequenceVal + 1);
	return sendICQ(u->socket, packet, ICQ_CMDxTCP_START, tcpSequenceVal + 1, u->dwUIN, cmd);
}

///////////////////////////////////////////////////////////////////////////////

ICQEvent *ICQ::sendUDP(ICQUser *u, unsigned short cmd, char *cmdStr, char *m)
{
	Packet packet;
	packet << ICQ_VERSION
		<< ICQ_CMDxSND_THRUxSERVER
		<< sequenceVal
		<< sequenceVal
		<< dwUIN
		<< (unsigned int)0x00
		<< u->dwUIN
		<< cmd
		<< m;

	/*  write for offline multi packet, but not work - little architecturial trouble:
		one big packet must divided on several little packets and Miranda use returned ONE event for control process sending,
		but not several events

		if (packet.size() > 450)
		{
		unsigned int i, j = 0;
		unsigned char c, frameNo, frameSize;

		packet.reset();

		frameSize = (packet.size()+449) / 450;
		for (frameNo=0; frameNo<frameSize; frameNo++)
		{
		Packet frame;
		frame << ICQ_VERSION
		<< ICQ_CMDxSND_MULTI
		<< sequenceVal
		<< sequenceVal
		<< uin
		<< (unsigned int)0x00
		<< frameSize
		<< frameNo;

		for (i=0; i<450 && j<packet.size(); i++, j++)
		{
		packet >> c;
		frame << c;
		}

		Netlib_Logf(hNetlibUser, "[udp] sending %s through server, part %d of %d (%d)\n", cmdStr, frameNo, frameSize, sequenceVal);
		sendICQ(udpSocket, packet, ICQ_CMDxSND_THRUxSERVER, sequenceVal, u->uin, cmd);
		}
		}
		else
		*/
	{
		Netlib_Logf(hNetlibUser, "[udp] sending %s through server (%d)\n", cmdStr, sequenceVal);
		return sendICQ(udpSocket, packet, ICQ_CMDxSND_THRUxSERVER, sequenceVal, u->dwUIN, cmd);
	}
}

///////////////////////////////////////////////////////////////////////////////

ICQEvent *ICQ::sendMessage(ICQUser *u, char *m)
{
	return send(u, ICQ_CMDxTCP_MSG, "message", m);
}

///////////////////////////////////////////////////////////////////////////////

ICQEvent *ICQ::sendUrl(ICQUser *u, char *url)
{
	unsigned int nameLen, descriptionLen;
	char *m, *description;
	ICQEvent *result;

	nameLen = (unsigned int)mir_strlen(url);
	description = (char*)url + nameLen + 1;
	descriptionLen = (unsigned int)mir_strlen(description);

	m = new char[nameLen + descriptionLen + 2];
	mir_strcpy(m, description);
	mir_strcpy(m + descriptionLen + 1, url);
	m[descriptionLen] = -2; // 0xFE;

	result = send(u, ICQ_CMDxTCP_URL, "url", m);
	delete[] m;

	return result;
}

///////////////////////////////////////////////////////////////////////////////

ICQEvent *ICQ::sendReadAwayMsg(ICQUser *u)
{
	unsigned short cmd;

	switch (u->statusVal) {
	case ID_STATUS_AWAY: cmd = ICQ_CMDxTCP_READxAWAYxMSG; break;
	case ID_STATUS_DND: cmd = ICQ_CMDxTCP_READxDNDxMSG; break;
	case ID_STATUS_NA: cmd = ICQ_CMDxTCP_READxNAxMSG; break;
	case ID_STATUS_OCCUPIED: cmd = ICQ_CMDxTCP_READxOCCUPIEDxMSG; break;
	case ID_STATUS_FREECHAT: cmd = ICQ_CMDxTCP_READxFREECHATxMSG; break;
	default: return nullptr;
	}

	return sendTCP(u, cmd, "away message request", "");
}

///////////////////////////////////////////////////////////////////////////////

ICQTransfer *ICQ::sendFile(ICQUser *u, char *description, char *filename, unsigned int size, wchar_t **files)
{
	if (!u->socket.connected() && !openConnection(u->socket))
		return nullptr;

	ICQTransfer *transfer = new ICQTransfer(u, tcpSequenceVal);

	int i;
	for (i = 0; files[i]; i++);
	transfer->files = new wchar_t*[i + 1];
	for (i = 0; files[i]; i++)
		transfer->files[i] = _wcsdup(files[i]);
	transfer->files[i] = nullptr;

	transfer->description = _strdup(description);
	transfer->count = i;
	transfer->totalSize = size;

	transfer->path = _wcsdup(transfer->files[0]);
	wchar_t *s = wcsrchr(transfer->path, '\\');
	if (s != nullptr)
		*s = 0;

	icqTransfers.push_back(transfer);
	transfer->ack(ACKRESULT_SENTREQUEST);

	unsigned short cmd = ICQ_CMDxTCP_FILE;
	char *m = description;

	unsigned int status;
	switch (statusVal) {
	case ID_STATUS_ONLINE: status = 0x00100000; break;
	case ID_STATUS_FREECHAT: status = 0x00000000; break;  // ??
	case ID_STATUS_AWAY: status = 0x01100000; break;
	case ID_STATUS_NA: status = 0x00100000; break;
	case ID_STATUS_DND: status = 0x00100000; break;
	case ID_STATUS_OCCUPIED: status = 0x02100000; break;
	case ID_STATUS_INVISIBLE: status = 0x00900000; break;	  // ??
	default: status = 0x00100000; break;
	}

	Packet packet;
	packet << dwUIN
		<< (unsigned short)0x02			// ICQ_VERSION
		<< ICQ_CMDxTCP_START				 // ICQ_CMDxTCP_ACK, ICQ_CMDxTCP_START, ICQ_CMDxTCP_CANCEL
		<< (unsigned short)0x00
		<< dwUIN
		<< cmd
		<< m
		<< udpSocket.localIPVal
		<< udpSocket.localIPVal
		<< tcpSocket.localPortVal
		<< (unsigned char)0x04
		<< status;


	packet << (unsigned int)0x00
		<< filename
		<< size
		<< (unsigned int)0x00;

	packet << tcpSequenceVal--;

	Netlib_Logf(hNetlibUser, "[tcp] sending file request (%d)\n", tcpSequenceVal + 1);
	sendICQ(u->socket, packet, ICQ_CMDxTCP_START, tcpSequenceVal + 1, u->dwUIN, cmd);
	return transfer;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::acceptFile(ICQUser *u, unsigned long hTransfer, char*)
{
	unsigned int theSequence = hTransfer;
	unsigned short cmd = ICQ_CMDxTCP_FILE;
	char m[1] = { 0 };

	unsigned long status;
	switch (statusVal) {
	case ID_STATUS_ONLINE: status = 0x00100000; break;
	case ID_STATUS_FREECHAT: status = 0x00000000; break;  // ??
	case ID_STATUS_AWAY: status = 0x01100000; break;
	case ID_STATUS_NA: status = 0x00100000; break;
	case ID_STATUS_DND: status = 0x00100000; break;
	case ID_STATUS_OCCUPIED: status = 0x02100000; break;
	case ID_STATUS_INVISIBLE: status = 0x00900000; break;	  // ??
	default: status = 0x00100000; break;
	}

	Packet packet;
	packet << dwUIN
		<< (unsigned short)0x02			// ICQ_VERSION
		<< ICQ_CMDxTCP_ACK				 // ICQ_CMDxTCP_ACK, ICQ_CMDxTCP_START, ICQ_CMDxTCP_CANCEL
		<< (unsigned short)0x00
		<< dwUIN
		<< cmd
		<< m
		<< udpSocket.localIPVal
		<< udpSocket.localIPVal
		<< tcpSocket.localPortVal
		<< (unsigned char)0x04
		<< (unsigned int)0x00;

	packet << (unsigned int)htons(tcpSocket.localPortVal)
		<< m
		<< (unsigned int)0x00
		<< tcpSocket.localPortVal;

	packet << theSequence;

	Netlib_Logf(hNetlibUser, "[tcp] sending accept file ack (%d)\n", theSequence);
	u->socket.sendPacket(packet);
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::refuseFile(ICQUser *u, unsigned long hTransfer, char *reason)
{
	unsigned int theSequence = hTransfer;
	unsigned short cmd = ICQ_CMDxTCP_FILE;
	char m[1] = { 0 };

	unsigned int status;
	switch (statusVal) {
	case ID_STATUS_ONLINE: status = 0x00100000; break;
	case ID_STATUS_FREECHAT: status = 0x00000000; break;  // ??
	case ID_STATUS_AWAY: status = 0x01100000; break;
	case ID_STATUS_NA: status = 0x00100000; break;
	case ID_STATUS_DND: status = 0x00100000; break;
	case ID_STATUS_OCCUPIED: status = 0x02100000; break;
	case ID_STATUS_INVISIBLE: status = 0x00900000; break;	  // ??
	default: status = 0x00100000; break;
	}

	Packet packet;
	packet << dwUIN
		<< (unsigned short)0x02			// ICQ_VERSION
		<< ICQ_CMDxTCP_ACK				   // ICQ_CMDxTCP_ACK, ICQ_CMDxTCP_START, ICQ_CMDxTCP_CANCEL
		<< (unsigned short)0x00
		<< dwUIN
		<< cmd
		<< reason
		<< udpSocket.localIPVal
		<< udpSocket.localIPVal
		<< tcpSocket.localPortVal
		<< (unsigned char)0x04
		<< (unsigned int)0x00000001;

	packet << (unsigned int)0x00
		<< m
		<< (unsigned int)0x00
		<< (unsigned int)0x00;

	packet << theSequence;

	Netlib_Logf(hNetlibUser, "[tcp] sending refuse file ack (%d)\n", theSequence);
	u->socket.sendPacket(packet);
}

///////////////////////////////////////////////////////////////////////////////

bool ICQ::getUserInfo(ICQUser *u, bool basicInfo)
{
	unsigned short cmd = basicInfo ? ICQ_CMDxSND_USERxGETxBASICxINFO : ICQ_CMDxSND_USERxGETxINFO;

	Packet request;
	request << ICQ_VERSION
		<< cmd
		<< sequenceVal
		<< sequenceVal
		<< dwUIN
		<< (unsigned int)0x00
		<< u->dwUIN;

	Netlib_Logf(hNetlibUser, "[udp] sending user %s info request (%d)...\n", basicInfo ? "basic" : "details", sequenceVal);
	sendICQ(udpSocket, request, cmd, sequenceVal, u->dwUIN, 0, basicInfo ? 1 : 5);
	return true;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::authorize(unsigned int uinToAuthorize)
{
	Packet packet;
	packet << ICQ_VERSION
		<< ICQ_CMDxSND_AUTHORIZE
		<< sequenceVal
		<< sequenceVal
		<< dwUIN
		<< (unsigned int)0x00
		<< uinToAuthorize
		<< (unsigned int)0x00010008   // who knows, seems to be constant
		<< (unsigned char)0x00;

	Netlib_Logf(hNetlibUser, "[udp] sending authorization (%d)\n", sequenceVal);
	sendICQ(udpSocket, packet, ICQ_CMDxSND_AUTHORIZE, sequenceVal);
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::processTcpPacket(Packet &packet, unsigned int hSocket)
{
	unsigned int i, checkUin, senderIp, localIp, userStatus, senderPort, junkLong, thePort, theTCPSequence = 0;
	unsigned short version, command, junkShort, newCommand, /*messageLen,*/ cicqVersion;
	unsigned char cicqChar, junkChar;
	char *message = nullptr;
	ICQUser *u;
	static unsigned int chatUin, chatSequence;

	packet >> checkUin
		>> version
		>> command	  // so far either message stuff or message ack
		>> junkShort	// 00 00 to fill in the MSB of the command long int which is read in as a short
		>> checkUin
		>> newCommand   // if a message then what type, message/chat/read away message/...
		>> message
		>> senderIp
		>> localIp
		>> senderPort
		>> junkChar
		>> userStatus;

	u = getUserByUIN(checkUin);
	switch (command) {
	case ICQ_CMDxTCP_START: // incoming tcp packet containing one of many possible things
		switch (newCommand) { // do a switch on what it could be
		case ICQ_CMDxTCP_MSG:  // straight message from a user
			Netlib_Logf(hNetlibUser, "[tcp] message from %d.\n", checkUin);

			packet >> theTCPSequence;

			ackTCP(packet, u, newCommand, theTCPSequence);
			addMessage(u, message, time(0));
			break;

		case ICQ_CMDxTCP_CHAT:
			Netlib_Logf(hNetlibUser, "[tcp] chat request from %d.\n", checkUin);

			packet >> junkLong
				>> junkLong
				>> junkShort
				>> junkChar
				>> theTCPSequence
				>> cicqChar
				>> cicqVersion;
			break;

		case ICQ_CMDxTCP_FILE:
			unsigned int size;
			char *fileName;

			fileName = nullptr;
			packet >> junkLong
				>> fileName
				>> size
				>> junkLong
				>> theTCPSequence;

			Netlib_Logf(hNetlibUser, "[tcp] file transfer request from %d (%d)\n", checkUin, theTCPSequence);

			addFileReq(u, message, fileName, size, theTCPSequence, time(0));
			delete[] fileName;
			break;

		case ICQ_CMDxTCP_READxAWAYxMSG: // read away message
		case ICQ_CMDxTCP_READxOCCUPIEDxMSG:
		case ICQ_CMDxTCP_READxNAxMSG:
		case ICQ_CMDxTCP_READxDNDxMSG:
		case ICQ_CMDxTCP_READxFREECHATxMSG:
			Netlib_Logf(hNetlibUser, "[tcp] %d requested read of away message.\n", checkUin);

			packet >> theTCPSequence;
			ackTCP(packet, u, newCommand, theTCPSequence);
			break;
		}
		break;

	case ICQ_CMDxTCP_ACK:  // message received packet
		switch (newCommand) {
		case ICQ_CMDxTCP_MSG:
			packet >> theTCPSequence;
			break;

		case ICQ_CMDxTCP_CHAT:
			packet >> junkShort
				>> junkChar
				>> junkLong   // port backwards
				>> thePort	// port to connect to for chat
				>> theTCPSequence;

			if (chatSequence != theTCPSequence || chatUin != checkUin) { // only if this is the first chat ack packet
				chatSequence = theTCPSequence;
				chatUin = checkUin;
				// emit eventResult(u, ICQ_CMDxTCP_CHAT, userStatus == 0x0000 ? true : false, thePort);
			}
			break;

		case ICQ_CMDxTCP_URL:
			packet >> theTCPSequence;
			break;

		case ICQ_CMDxTCP_FILE:
			packet >> junkLong
				>> junkShort
				>> junkChar
				>> junkLong
				>> thePort
				>> theTCPSequence;

			Netlib_Logf(hNetlibUser, "[tcp] file transfer ack from %d (%d)\n", u->dwUIN, theTCPSequence);

			ICQTransfer *t;
			for (i = 0; i < icqTransfers.size(); i++) {
				t = icqTransfers[i];
				if (t->uin == checkUin && !t->socket.connected()) {
					if (userStatus != 0) {
						Netlib_Logf(hNetlibUser, "[tcp] file transfer denied by %d\n", checkUin);
						ProtoBroadcastAck(protoName, t->hContact, ACKTYPE_FILE, ACKRESULT_DENIED, t, 0);
						delete t;
						icqTransfers[i] = icqTransfers[icqTransfers.size() - 1];
						icqTransfers.pop_back();
						break;
					}

					if (!t->socket.setDestination(u->socket.remoteIPVal, thePort)) {
						Netlib_Logf(hNetlibUser, "[tcp] can't set destination\n");
						break;
					}
					t->ack(ACKRESULT_CONNECTING);
					if (openConnection(t->socket)) {
						t->ack(ACKRESULT_CONNECTED);
						t->sendPacket0x00();
					}
					break;
				}
			}
			break;

		case ICQ_CMDxTCP_READxAWAYxMSG:
		case ICQ_CMDxTCP_READxOCCUPIEDxMSG:
		case ICQ_CMDxTCP_READxNAxMSG:
		case ICQ_CMDxTCP_READxDNDxMSG:
		case ICQ_CMDxTCP_READxFREECHATxMSG:
			packet >> theTCPSequence;
			addAwayMsg(u, message, theTCPSequence, time(0));
			break;
		}

		// output the away message if there is one (ie if user status is not online)
		if (userStatus == 0x0000)
			Netlib_Logf(hNetlibUser, "[tcp] ack from %d (%d).\n", u->dwUIN, theTCPSequence);
		else if (userStatus == 0x0001)
			Netlib_Logf(hNetlibUser, "[tcp] refusal from %d (%d): %s\n", u->dwUIN, theTCPSequence, message);
		else {
			// u->setAwayMessage(message);
			Netlib_Logf(hNetlibUser, "[tcp] ack from %d (%d).\n", u->dwUIN, theTCPSequence);
			// Netlib_Logf(hNetlibUser, "[tcp] ack from %d (%ld): %s\n", u->uin, theTCPSequence, message);
		}

		doneEvent(true, hSocket, theTCPSequence);
		break;

	case ICQ_CMDxTCP_CANCEL:
		switch (newCommand) {
		case ICQ_CMDxTCP_CHAT:
			Netlib_Logf(hNetlibUser, "[tcp] chat request from %d (%d) cancelled.\n", checkUin, theTCPSequence);
			// u->addMessage(chatReq, 0);
			break;

		case ICQ_CMDxTCP_FILE:
			Netlib_Logf(hNetlibUser, "[tcp] file transfer request from %d (%d) cancelled.\n", u->dwUIN, theTCPSequence);
			// u->addMessage(fileReq, 0);
			break;
		}
		break;

	default:
		Netlib_Logf(hNetlibUser, "[tcp] unknown packet:\n%s", packet.print());
		packet.reset();
	}
	delete[] message;
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::ackTCP(Packet &packet, ICQUser *u, unsigned short newCommand, unsigned int theSequence)
{
	unsigned int status;

	switch (statusVal) {
	case ID_STATUS_ONLINE: status = 0x00100000; break;
	case ID_STATUS_FREECHAT: status = 0x00000000; break;	// ??
	case ID_STATUS_AWAY: status = 0x01100000; break;
	case ID_STATUS_NA: status = 0x00100000; break;
	case ID_STATUS_DND: status = 0x00100000; break;
	case ID_STATUS_OCCUPIED: status = 0x02100000; break;
	case ID_STATUS_INVISIBLE: status = 0x00900000; break;   // ??
	default: status = 0x00100000; break;
	}

	packet.clearPacket();
	packet << dwUIN
		<< (unsigned short)0x02
		<< (unsigned short)ICQ_CMDxTCP_ACK // ICQ_CMDxTCP_ACK, ICQ_CMDxTCP_START, ICQ_CMDxTCP_CANCEL
		<< (unsigned short)0x00
		<< dwUIN
		<< newCommand
		<< awayMessage
		<< u->socket.localIPVal
		<< u->socket.localIPVal
		<< u->socket.localPortVal
		<< (unsigned char)0x04
		<< status
		<< theSequence;

	Netlib_Logf(hNetlibUser, "[tcp] sending ack (%d)\n", theSequence);
	u->socket.sendPacket(packet);
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::recvUDP(int)
{
	Packet packet;

	// mirabilis contacts us using udp on this server
	if (udpSocket.receivePacket(packet)) processUdpPacket(packet);
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::recvNewTCP(int)
{
	ICQUser *u;
	Packet handshake;

	// our tcp incoming server
	TCPSocket newSocket(0);
	tcpSocket.receiveConnection(newSocket);
	newSocket.receivePacket(handshake);

	unsigned int ulJunk, newUin, localHost;
	unsigned short command, usJunk;
	unsigned char ucJunk;

	handshake >> command;

	if (command != ICQ_CMDxTCP_HANDSHAKE && command != ICQ_CMDxTCP_HANDSHAKE2 && command != ICQ_CMDxTCP_HANDSHAKE3) {
		Netlib_Logf(hNetlibUser, "[tcp] garbage packet:\n%s", handshake.print());
		handshake.reset();
	}
	else {
		handshake >> ulJunk
			>> usJunk
			>> ucJunk
			>> newUin
			>> localHost
			>> localHost
			>> ulJunk
			>> ucJunk;

		u = getUserByUIN(newUin);
		if (!u->socket.connected()) {
			Netlib_Logf(hNetlibUser, "[tcp] connection from uin %d.\n", newUin);
			u->socket.transferConnectionFrom(newSocket);
		}
		else {
			unsigned int i;
			ICQTransfer *t;

			Netlib_Logf(hNetlibUser, "[tcp] file direct connection from uin %d.\n", newUin);
			for (i = 0; i < icqTransfers.size(); i++) {
				t = icqTransfers[i];
				if (t->uin == newUin && !t->socket.connected())
					t->socket.transferConnectionFrom(newSocket);
			}
		}
	}
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::recvTCP(SOCKET hSocket)
{
	for (size_t i = 0; i < icqUsers.size(); i++) {
		ICQUser *u = icqUsers[i];
		if (u->socket.handleVal == hSocket) {
			Packet packet;
			if (!u->socket.receivePacket(packet)) {
				Netlib_Logf(hNetlibUser, "[tcp] connection to %d lost.\n", u->dwUIN);
				return;
			}
			processTcpPacket(packet, hSocket);
			return;
		}
	}
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::recvTransferTCP(SOCKET hSocket)
{
	for (size_t i = 0; i < icqTransfers.size(); i++) {
		ICQTransfer *transfer = icqTransfers[i];
		if (transfer->socket.handleVal == hSocket) {
			Packet packet;
			if (!transfer->socket.receivePacket(packet)) {
				// Netlib_Logf(hNetlibUser, "[tcp] connection to %d lost.\n", s->uin);
				return;
			}
			transfer->processTcpPacket(packet);
			return;
		}
	}
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::addMessage(ICQUser *u, char *m, time_t t)
{
	Netlib_Logf(hNetlibUser, "message: %s\n", m);

	DB::EventInfo dbei;
	dbei.timestamp = t;
	dbei.pBlob = m;
	ProtoChainRecvMsg(u->hContact, dbei);
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::addAwayMsg(ICQUser *u, char *m, unsigned long theSequence, time_t t)
{
	Netlib_Logf(hNetlibUser, "away msg: %s\n", m);

	DB::EventInfo dbei;
	dbei.timestamp = t;
	dbei.pBlob = m;
	dbei.cbBlob = theSequence;

	CCSDATA ccs = { u->hContact, PSR_AWAYMSG, u->statusVal, (LPARAM)&dbei };
	Proto_ChainRecv(0, &ccs);
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::addFileReq(ICQUser *u, char *m, char *filename, unsigned long size, unsigned long theSequence, time_t t)
{
	ICQTransfer *transfer = new ICQTransfer(u, theSequence);
	transfer->description = _strdup(m);
	transfer->totalSize = size;

	icqTransfers.push_back(transfer);

	// Send chain event
	DB::FILE_BLOB blob(transfer, filename, m);

	DB::EventInfo dbei;
	dbei.timestamp = t;
	blob.write(dbei);

	CCSDATA ccs = { u->hContact, PSR_FILE, 0, (LPARAM)&dbei };
	Proto_ChainRecv(0, &ccs);

	mir_free(dbei.pBlob);
}

///////////////////////////////////////////////////////////////////////////////

void ICQ::doneUserFcn(bool ack, ICQEvent *icqEvent)
{
	unsigned int type = 0;

	if (icqEvent->subCmd == ICQ_CMDxTCP_MSG)
		type = ACKTYPE_MESSAGE;

	ProtoBroadcastAck(protoName, getUserByUIN(icqEvent->uin)->hContact, type, ack ? ACKRESULT_SUCCESS : ACKRESULT_FAILED, (HANDLE)icqEvent->sequence, 0);
}