C++ TreeSocket::DoCollision方法代码示例

CmdResult CommandUID::Handle(const parameterlist &params, User* serversrc)
{
	SpanningTreeUtilities* Utils = ((ModuleSpanningTree*)(Module*)creator)->Utils;
	/** Do we have enough parameters:
	 *      0    1    2    3    4    5        6        7     8        9       (n-1)
	 * UID uuid age nick host dhost ident ip.string signon +modes (modepara) :gecos
	 */
	time_t age_t = ConvToInt(params[1]);
	time_t signon = ConvToInt(params[7]);
	std::string empty;
	const std::string& modestr = params[8];

	TreeServer* remoteserver = Utils->FindServer(serversrc->server);

	if (!remoteserver)
		return CMD_INVALID;
	/* Is this a valid UID, and not misrouted? */
	if (params[0].length() != 9 || params[0].substr(0,3) != serversrc->uuid)
		return CMD_INVALID;
	/* Check parameters for validity before introducing the client, discovered by dmb */
	if (!age_t)
		return CMD_INVALID;
	if (!signon)
		return CMD_INVALID;
	if (modestr[0] != '+')
		return CMD_INVALID;
	TreeSocket* sock = remoteserver->GetRoute()->GetSocket();

	/* check for collision */
	user_hash::iterator iter = ServerInstance->Users->clientlist->find(params[2]);

	if (iter != ServerInstance->Users->clientlist->end())
	{
		/*
		 * Nick collision.
		 */
		int collide = sock->DoCollision(iter->second, age_t, params[5], params[6], params[0]);
		ServerInstance->Logs->Log("m_spanningtree",LOG_DEBUG,"*** Collision on %s, collide=%d", params[2].c_str(), collide);

		if (collide != 1)
		{
			/* remote client lost, make sure we change their nick for the hash too
			 *
			 * This alters the line that will be sent to other servers, which
			 * commands normally shouldn't do; hence the required const_cast.
			 */
			const_cast<parameterlist&>(params)[2] = params[0];
		}
	}

	/* IMPORTANT NOTE: For remote users, we pass the UUID in the constructor. This automatically
	 * sets it up in the UUID hash for us.
	 */
	User* _new = NULL;
	try
	{
		_new = new RemoteUser(params[0], remoteserver->GetName());
	}
	catch (...)
	{
		ServerInstance->Logs->Log("m_spanningtree", LOG_DEFAULT, "Duplicate UUID %s in client introduction", params[0].c_str());
		return CMD_INVALID;
	}
	(*(ServerInstance->Users->clientlist))[params[2]] = _new;
	_new->nick = params[2];
	_new->host = params[3];
	_new->dhost = params[4];
	_new->ident = params[5];
	_new->fullname = params[params.size() - 1];
	_new->registered = REG_ALL;
	_new->signon = signon;
	_new->age = age_t;

	unsigned int paramptr = 9;

	// Accept more '+' chars, for now
	std::string::size_type pos = modestr.find_first_not_of('+');
	for (std::string::const_iterator v = modestr.begin()+pos; v != modestr.end(); ++v)
	{
		/* For each mode thats set, find the mode handler and set it on the new user */
		ModeHandler* mh = ServerInstance->Modes->FindMode(*v, MODETYPE_USER);
		if (!mh)
		{
			ServerInstance->Logs->Log("m_spanningtree", LOG_DEFAULT, "Unrecognised mode '%c' for a user in UID, dropping link", *v);
			return CMD_INVALID;
		}

		if (mh->GetNumParams(true))
		{
			if (paramptr >= params.size() - 1)
				return CMD_INVALID;
			std::string mp = params[paramptr++];
			/* IMPORTANT NOTE:
			 * All modes are assumed to succeed here as they are being set by a remote server.
			 * Modes CANNOT FAIL here. If they DO fail, then the failure is ignored. This is important
			 * to note as all but one modules currently cannot ever fail in this situation, except for
			 * m_servprotect which specifically works this way to prevent the mode being set ANYWHERE
			 * but here, at client introduction. You may safely assume this behaviour is standard and
			 * will not change in future versions if you want to make use of this protective behaviour
			 * yourself.
//.........这里部分代码省略.........