client.cpp

p2p技术C源代码.rar

/* 
 * Copyright (C) 2001-2003 Jacek Sieka, [e-mail]
 *
 * 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 "stdinc.h"
#include "DCPlusPlus.h"

#include "Socket.h"
#include "Client.h"
#include "ClientManager.h"
#include "SearchManager.h"
#include "ShareManager.h"

Client::Counts Client::counts;

Client::~Client() throw() {
	TimerManager::getInstance()->removeListener(this);
	socket->removeListener(this);
	removeListeners();

	clearUsers();
	updateCounts(true);

	BufferedSocket::putSocket(socket);
	socket = NULL;
};

void Client::updateCounts(bool aRemove) {
	// We always remove the count and then add the correct one if requested...

	if(countType == COUNT_NORMAL) {
		Thread::safeDec(&counts.normal);
	} else if(countType == COUNT_REGISTERED) {
		Thread::safeDec(&counts.registered);
	} else if(countType == COUNT_OP) {
		Thread::safeDec(&counts.op);
	}
	countType = COUNT_UNCOUNTED;

	if(!aRemove) {
		if(op) {
			Thread::safeInc(&counts.op);
			countType = COUNT_OP;
		} else if(registered) {
			Thread::safeInc(&counts.registered);
			countType = COUNT_REGISTERED;
		} else {
			Thread::safeInc(&counts.normal);
			countType = COUNT_NORMAL;
		}
	}
}

void Client::connect(const string& aServer) {
	string tmp;
	port = 411;
	Util::decodeUrl(aServer, server, port, tmp);

	connect();
}

void Client::connect() {
	op = false;
	registered = false;
	reconnect = true;

	if(socket->isConnected()) {
		disconnect();
	}

	state = STATE_LOCK;

	socket->connect(server, port);
}

void Client::refreshUserList(bool unknownOnly /* = false */) {
	Lock l(cs);
	if(unknownOnly) {
		for(User::NickIter i = users.begin(); i != users.end(); ++i) {
			if(i->second->getConnection().empty()) {
				getInfo(i->second);
			}
		}
	} else {
		clearUsers();
		getNickList();
	}
}

void Client::clearUsers() {
	for(User::NickIter i = users.begin(); i != users.end(); ++i) {
		ClientManager::getInstance()->putUserOffline(i->second);		
	}
	users.clear();
}

void Client::onLine(const string& aLine) throw() {
	lastActivity = GET_TICK();

	if(aLine.length() == 0)
		return;
	
	if(aLine[0] != '$') {
		// Check if we're being banned...
		if(state != STATE_CONNECTED) {
			if(Util::findSubString(aLine, "banned") != string::npos) {
				reconnect = false;
			}
		}
		fire(ClientListener::MESSAGE, this, Util::validateMessage(aLine, true));
		return;
	}

	string cmd;
	string param;
	string::size_type x;
	
	if( (x = aLine.find(' ')) == string::npos) {
		cmd = aLine;
	} else {
		cmd = aLine.substr(0, x);
		param = aLine.substr(x+1);
	}

	if(cmd == "$Search") {
		if(state != STATE_CONNECTED) {
			return;
		}
		string::size_type i = 0;
		string::size_type j = param.find(' ', i);
		if(j == string::npos || i == j)
			return;
		string seeker = param.substr(i, j-i);
		i = j + 1;
		
		{
			Lock l(cs);
			u_int32_t tick = GET_TICK();

			seekers.push_back(make_pair(seeker, tick));

			// First, check if it's a flooder
			FloodIter fi;
			for(fi = flooders.begin(); fi != flooders.end(); ++fi) {
				if(fi->first == seeker) {
					return;
				}
			}

			int count = 0;
			for(fi = seekers.begin(); fi != seekers.end(); ++fi) {
				if(fi->first == seeker)
					count++;

				if(count > 7) {
					if(seeker.find("Hub:") != string::npos)
						fire(ClientListener::SEARCH_FLOOD, this, seeker.substr(4));
					else
						fire(ClientListener::SEARCH_FLOOD, this, seeker + STRING(NICK_UNKNOWN));

					flooders.push_back(make_pair(seeker, tick));
					return;
				}
			}
		}

		int a;
		if(param[i] == 'F') {
			a = SearchManager::SIZE_DONTCARE;
		} else if(param[i+2] == 'F') {
			a = SearchManager::SIZE_ATLEAST;
		} else {
			a = SearchManager::SIZE_ATMOST;
		}
		i += 4;
		j = param.find('?', i);
		if(j == string::npos || i == j)
			return;
		string size = param.substr(i, j-i);
		i = j + 1;
		j = param.find('?', i);
		if(j == string::npos || i == j)
			return;
		int type = Util::toInt(param.substr(i, j-i)) - 1;
		i = j + 1;
		param = param.substr(i);

		if(param.size() > 0) {
			fire(ClientListener::SEARCH, this, seeker, a, size, type, param);
			
			if(seeker.find("Hub:") != string::npos) {
				User::Ptr u;
				{
					Lock l(cs);
					User::NickIter ni = users.find(seeker.substr(4));
					if(ni != users.end() && !ni->second->isSet(User::PASSIVE)) {
						u = ni->second;
						u->setFlag(User::PASSIVE);
					}
				}

				if(u) {
					updated(u);
				}
			}
		}
	} else if(cmd == "$MyINFO") {
		string::size_type i, j;
		i = 5;
		string nick;
		j = param.find(' ', i);
		if( (j == string::npos) || (j == i) )
			return;
		nick = param.substr(i, j-i);
		i = j + 1;
		User::Ptr u;
		dcassert(nick.size() > 0);

		{
			Lock l(cs);
			User::NickIter ni = users.find(nick);
			if(ni == users.end()) {
				u = ClientManager::getInstance()->getUser(nick, this);
				users[nick] = u;
			} else {
				u  = ni->second;
			}
		}
		j = param.find('$', i);
		if(j == string::npos)
			return;
		string tmpDesc = Util::validateMessage(param.substr(i, j-i), true);
		// Look for a tag...
		if(tmpDesc.size() > 0 && tmpDesc[tmpDesc.size()-1] == '>') {
			string::size_type x = tmpDesc.rfind('<');
			if(x != string::npos) {
				// Hm, we have something...
				u->setTag(tmpDesc.substr(x));
				tmpDesc.erase(x);
			}
		}
		u->setDescription(tmpDesc);
		i = j + 3;
		j = param.find('$', i);
		if(j == string::npos)
			return;
		u->setConnection(param.substr(i, j-i-1));
		i = j + 1;
		j = param.find('$', i);
		if(j == string::npos)
			return;
		u->setEmail(Util::validateMessage(param.substr(i, j-i), true));
		i = j + 1;
		j = param.find('$', i);
		if(j == string::npos)
			return;
		u->setBytesShared(param.substr(i, j-i));
		
		fire(ClientListener::MY_INFO, this, u);
	} else if(cmd == "$Quit") {
		if(!param.empty()) {
			User::Ptr u;
			{
				Lock l(cs);
				User::NickIter i = users.find(param);
				if(i == users.end()) {
					dcdebug("C::onLine Quitting user %s not found\n", param.c_str());
					return;
				}
				
				u = i->second;
				users.erase(i);
			}
			
			fire(ClientListener::QUIT, this, u);
			ClientManager::getInstance()->putUserOffline(u, true);
		}
	} else if(cmd == "$ConnectToMe") {
		if(state != STATE_CONNECTED) {
			return;
		}
		string::size_type i = param.find(' ');
		string::size_type j;
		if( (i == string::npos) || ((i + 1) >= param.size()) ) {
			return;
		}
		i++;
		j = param.find(':', i);
		if(j == string::npos) {
			return;
		}
		string server = param.substr(i, j-i);
		if(j+1 >= param.size()) {
			return;
		}
		fire(ClientListener::CONNECT_TO_ME, this, server, param.substr(j+1));

	} else if(cmd == "$RevConnectToMe") {
		if(state != STATE_CONNECTED) {
			return;
		}
		User::Ptr u;
		bool up = false;
		{
			Lock l(cs);
			string::size_type j = param.find(' ');
			if(j == string::npos) {
				return;
			}

			User::NickIter i = users.find(param.substr(0, j));
			if(i == users.end()) {
				return;
			}