예제 #1
0
파일: irc.c 프로젝트: mguindin/ngircd
static bool
Send_Message(CLIENT * Client, REQUEST * Req, int ForceType, bool SendErrors)
{
	CLIENT *cl, *from;
	CL2CHAN *cl2chan;
	CHANNEL *chan;
	char *currentTarget = Req->argv[0];
	char *lastCurrentTarget = NULL;

	assert(Client != NULL);
	assert(Req != NULL);

	if (Req->argc == 0) {
		if (!SendErrors)
			return CONNECTED;
		return IRC_WriteStrClient(Client, ERR_NORECIPIENT_MSG,
					  Client_ID(Client), Req->command);
	}
	if (Req->argc == 1) {
		if (!SendErrors)
			return CONNECTED;
		return IRC_WriteStrClient(Client, ERR_NOTEXTTOSEND_MSG,
					  Client_ID(Client));
	}
	if (Req->argc > 2) {
		if (!SendErrors)
			return CONNECTED;
		return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
					  Client_ID(Client), Req->command);
	}

	if (Client_Type(Client) == CLIENT_SERVER)
		from = Client_Search(Req->prefix);
	else
		from = Client;
	if (!from)
		return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
					  Client_ID(Client), Req->prefix);

	/* handle msgtarget = msgto *("," msgto) */
	currentTarget = strtok_r(currentTarget, ",", &lastCurrentTarget);
	ngt_UpperStr(Req->command);

	while (currentTarget) {
		/* Check for and handle valid <msgto> of form:
		 * RFC 2812 2.3.1:
		 *   msgto =  channel / ( user [ "%" host ] "@" servername )
		 *   msgto =/ ( user "%" host ) / targetmask
		 *   msgto =/ nickname / ( nickname "!" user "@" host )
		 */
		if (strchr(currentTarget, '!') == NULL)
			/* nickname */
			cl = Client_Search(currentTarget);
		else
			cl = NULL;

		if (cl == NULL) {
			/* If currentTarget isn't a nickname check for:
			 * user ["%" host] "@" servername
			 * user "%" host
			 * nickname "!" user "@" host
			 */
			char target[COMMAND_LEN];
			char * nick = NULL;
			char * user = NULL;
			char * host = NULL;
			char * server = NULL;

			strlcpy(target, currentTarget, COMMAND_LEN);
			server = strchr(target, '@');
			if (server) {
				*server = '\0';
				server++;
			}
			host = strchr(target, '%');
			if (host) {
				*host = '\0';
				host++;
			}
			user = strchr(target, '!');
			if (user) {
				/* msgto form: nick!user@host */
				*user = '******';
				user++;
				nick = target;
				host = server; /* not "@server" but "@host" */
			} else {
				user = target;
			}

			for (cl = Client_First(); cl != NULL; cl = Client_Next(cl)) {
				if (Client_Type(cl) != CLIENT_USER &&
				    Client_Type(cl) != CLIENT_SERVICE)
					continue;
				if (nick != NULL && host != NULL) {
					if (strcasecmp(nick, Client_ID(cl)) == 0 &&
					    strcasecmp(user, Client_User(cl)) == 0 &&
					    strcasecmp(host, Client_HostnameCloaked(cl)) == 0)
						break;
					else
						continue;
				}
				if (strcasecmp(user, Client_User(cl)) != 0)
					continue;
				if (host != NULL && strcasecmp(host,
						Client_HostnameCloaked(cl)) != 0)
					continue;
				if (server != NULL && strcasecmp(server,
						Client_ID(Client_Introducer(cl))) != 0)
					continue;
				break;
			}
		}

		if (cl) {
			/* Target is a user, enforce type */
#ifndef STRICT_RFC
			if (Client_Type(cl) != ForceType &&
			    !(ForceType == CLIENT_USER &&
			      (Client_Type(cl) == CLIENT_USER ||
			       Client_Type(cl) == CLIENT_SERVICE))) {
#else
			if (Client_Type(cl) != ForceType) {
#endif
				if (SendErrors && !IRC_WriteStrClient(
				    from, ERR_NOSUCHNICK_MSG,Client_ID(from),
				    currentTarget))
					return DISCONNECTED;
				goto send_next_target;
			}

#ifndef STRICT_RFC
			if (ForceType == CLIENT_SERVICE &&
			    (Conn_Options(Client_Conn(Client_NextHop(cl)))
			     & CONN_RFC1459)) {
				/* SQUERY command but RFC 1459 link: convert
				 * request to PRIVMSG command */
				Req->command = "PRIVMSG";
			}
#endif

			if (Client_HasMode(cl, 'C')) {
				cl2chan = Channel_FirstChannelOf(cl);
				while (cl2chan) {
					chan = Channel_GetChannel(cl2chan);
					if (Channel_IsMemberOf(chan, from))
						break;
					cl2chan = Channel_NextChannelOf(cl, cl2chan);
				}
				if (!cl2chan) {
					if (SendErrors && !IRC_WriteStrClient(
					    from, ERR_NOTONSAMECHANNEL_MSG,
					    Client_ID(from), Client_ID(cl)))
						return DISCONNECTED;
					goto send_next_target;
				}
			}

			if (SendErrors && (Client_Type(Client) != CLIENT_SERVER)
			    && strchr(Client_Modes(cl), 'a')) {
				/* Target is away */
				if (!IRC_WriteStrClient(from, RPL_AWAY_MSG,
							Client_ID(from),
							Client_ID(cl),
							Client_Away(cl)))
					return DISCONNECTED;
			}
			if (Client_Conn(from) > NONE) {
				Conn_UpdateIdle(Client_Conn(from));
			}
			if (!IRC_WriteStrClientPrefix(cl, from, "%s %s :%s",
						      Req->command, Client_ID(cl),
						      Req->argv[1]))
				return DISCONNECTED;
		} else if (ForceType != CLIENT_SERVICE
			   && (chan = Channel_Search(currentTarget))) {
			if (!Channel_Write(chan, from, Client, Req->command,
					   SendErrors, Req->argv[1]))
					return DISCONNECTED;
		} else if (ForceType != CLIENT_SERVICE
			/* $#: server/target mask, RFC 2812, sec. 3.3.1 */
			   && strchr("$#", currentTarget[0])
			   && strchr(currentTarget, '.')) {
			/* targetmask */
			if (!Send_Message_Mask(from, Req->command, currentTarget,
					       Req->argv[1], SendErrors))
				return DISCONNECTED;
		} else {
			if (!SendErrors)
				return CONNECTED;
			if (!IRC_WriteStrClient(from, ERR_NOSUCHNICK_MSG,
						Client_ID(from), currentTarget))
				return DISCONNECTED;
		}

	send_next_target:
		currentTarget = strtok_r(NULL, ",", &lastCurrentTarget);
		if (currentTarget)
			Conn_SetPenalty(Client_Conn(Client), 1);
	}

	return CONNECTED;
} /* Send_Message */


static bool
Send_Message_Mask(CLIENT * from, char * command, char * targetMask,
		  char * message, bool SendErrors)
{
	CLIENT *cl;
	bool client_match;
	char *mask = targetMask + 1;
	const char *check_wildcards;

	cl = NULL;

	if (strchr(Client_Modes(from), 'o') == NULL) {
		if (!SendErrors)
			return true;
		return IRC_WriteStrClient(from, ERR_NOPRIVILEGES_MSG,
					  Client_ID(from));
	}

	/*
	 * RFC 2812, sec. 3.3.1 requires that targetMask have at least one
	 * dot (".") and no wildcards ("*", "?") following the last one.
	 */
	check_wildcards = strrchr(targetMask, '.');
	assert(check_wildcards != NULL);
	if (check_wildcards &&
		check_wildcards[strcspn(check_wildcards, "*?")])
	{
		if (!SendErrors)
			return true;
		return IRC_WriteStrClient(from, ERR_WILDTOPLEVEL, targetMask);
	}

	/* #: hostmask, see RFC 2812, sec. 3.3.1 */
	if (targetMask[0] == '#') {
		for (cl = Client_First(); cl != NULL; cl = Client_Next(cl)) {
			if (Client_Type(cl) != CLIENT_USER)
				continue;
			client_match = MatchCaseInsensitive(mask, Client_Hostname(cl));
			if (client_match)
				if (!IRC_WriteStrClientPrefix(cl, from, "%s %s :%s",
						command, Client_ID(cl), message))
					return false;
		}
	} else {
		assert(targetMask[0] == '$'); /* $: server mask, see RFC 2812, sec. 3.3.1 */
		for (cl = Client_First(); cl != NULL; cl = Client_Next(cl)) {
			if (Client_Type(cl) != CLIENT_USER)
				continue;
			client_match = MatchCaseInsensitive(mask,
					Client_ID(Client_Introducer(cl)));
			if (client_match)
				if (!IRC_WriteStrClientPrefix(cl, from, "%s %s :%s",
						command, Client_ID(cl), message))
					return false;
		}
	}
	return CONNECTED;
} /* Send_Message_Mask */
예제 #2
0
파일: irc.c 프로젝트: mguindin/ngircd
GLOBAL bool
IRC_TRACE( CLIENT *Client, REQUEST *Req )
{
	CLIENT *from, *target, *c;
	CONN_ID idx, idx2;
	char user[CLIENT_USER_LEN];

	assert( Client != NULL );
	assert( Req != NULL );

	/* Bad number of arguments? */
	if( Req->argc > 1 ) return IRC_WriteStrClient( Client, ERR_NORECIPIENT_MSG, Client_ID( Client ), Req->command );

	/* Search sender */
	if( Client_Type( Client ) == CLIENT_SERVER ) from = Client_Search( Req->prefix );
	else from = Client;
	if( ! from ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );

	/* Search target */
	if( Req->argc == 1 ) target = Client_Search( Req->argv[0] );
	else target = Client_ThisServer( );
	
	/* Forward command to other server? */
	if( target != Client_ThisServer( ))
	{
		if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );

		/* Send RPL_TRACELINK back to initiator */
		idx = Client_Conn( Client ); assert( idx > NONE );
		idx2 = Client_Conn( Client_NextHop( target )); assert( idx2 > NONE );
		if( ! IRC_WriteStrClient( from, RPL_TRACELINK_MSG, Client_ID( from ), PACKAGE_NAME, PACKAGE_VERSION, Client_ID( target ), Client_ID( Client_NextHop( target )), Option_String( idx2 ), time( NULL ) - Conn_StartTime( idx2 ), Conn_SendQ( idx ), Conn_SendQ( idx2 ))) return DISCONNECTED;

		/* Forward command */
		IRC_WriteStrClientPrefix( target, from, "TRACE %s", Req->argv[0] );
		return CONNECTED;
	}

	/* Infos about all connected servers */
	c = Client_First( );
	while( c )
	{
		if( Client_Conn( c ) > NONE )
		{
			/* Local client */
			if( Client_Type( c ) == CLIENT_SERVER )
			{
				/* Server link */
				strlcpy( user, Client_User( c ), sizeof( user ));
				if( user[0] == '~' ) strlcpy( user, "unknown", sizeof( user ));
				if( ! IRC_WriteStrClient( from, RPL_TRACESERVER_MSG, Client_ID( from ), Client_ID( c ), user, Client_Hostname( c ), Client_Mask( Client_ThisServer( )), Option_String( Client_Conn( c )))) return DISCONNECTED;
			}
			if(( Client_Type( c ) == CLIENT_USER ) && ( strchr( Client_Modes( c ), 'o' )))
			{
				/* IRC Operator */
				if( ! IRC_WriteStrClient( from, RPL_TRACEOPERATOR_MSG, Client_ID( from ), Client_ID( c ))) return DISCONNECTED;
			}
		}
		c = Client_Next( c );
	}

	IRC_SetPenalty( Client, 3 );
	return IRC_WriteStrClient( from, RPL_TRACEEND_MSG, Client_ID( from ), Conf_ServerName, PACKAGE_NAME, PACKAGE_VERSION, NGIRCd_DebugLevel );
} /* IRC_TRACE */
예제 #3
0
파일: irc.c 프로젝트: ngircd/ngircd
/*
 * Handler for the IRC "TRACE" command.
 *
 * @param Client The client from which this command has been received.
 * @param Req Request structure with prefix and all parameters.
 * @return CONNECTED or DISCONNECTED.
 */
 GLOBAL bool
IRC_TRACE(CLIENT *Client, REQUEST *Req)
{
	CLIENT *from, *target, *c;
	CONN_ID idx, idx2;
	char user[CLIENT_USER_LEN];

	assert(Client != NULL);
	assert(Req != NULL);

	_IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
	_IRC_GET_TARGET_SERVER_OR_RETURN_(target, Req, 0, from)

	/* Forward command to other server? */
	if (target != Client_ThisServer()) {
		/* Send RPL_TRACELINK back to initiator */
		idx = Client_Conn(Client);
		assert(idx > NONE);
		idx2 = Client_Conn(Client_NextHop(target));
		assert(idx2 > NONE);

		if (!IRC_WriteStrClient(from, RPL_TRACELINK_MSG,
					Client_ID(from), PACKAGE_NAME,
					PACKAGE_VERSION, Client_ID(target),
					Client_ID(Client_NextHop(target)),
					Option_String(idx2),
					(long)(time(NULL) - Conn_StartTime(idx2)),
					Conn_SendQ(idx), Conn_SendQ(idx2)))
			return DISCONNECTED;

		/* Forward command */
		IRC_WriteStrClientPrefix(target, from, "TRACE %s", Req->argv[0]);
		return CONNECTED;
	}

	/* Infos about all connected servers */
	c = Client_First();
	while (c) {
		if (Client_Conn(c) > NONE) {
			/* Local client */
			if (Client_Type(c) == CLIENT_SERVER) {
				/* Server link */
				strlcpy(user, Client_User(c), sizeof(user));
				if (user[0] == '~')
					strlcpy(user, "unknown", sizeof(user));
				if (!IRC_WriteStrClient(from,
						RPL_TRACESERVER_MSG,
						Client_ID(from), Client_ID(c),
						user, Client_Hostname(c),
						Client_Mask(Client_ThisServer()),
						Option_String(Client_Conn(c))))
					return DISCONNECTED;
			}
			if (Client_Type(c) == CLIENT_USER
			    && Client_HasMode(c, 'o')) {
				/* IRC Operator */
				if (!IRC_WriteStrClient(from,
						RPL_TRACEOPERATOR_MSG,
						Client_ID(from), Client_ID(c)))
					return DISCONNECTED;
			}
		}
		c = Client_Next( c );
	}

	return IRC_WriteStrClient(from, RPL_TRACEEND_MSG, Client_ID(from),
				  Conf_ServerName, PACKAGE_NAME,
				  PACKAGE_VERSION, NGIRCd_DebugLevel);
} /* IRC_TRACE */
예제 #4
0
파일: irc.c 프로젝트: ngircd/ngircd
/**
 * Get pointer to a static string representing the connection "options".
 *
 * @param Idx Connection index.
 * @return Pointer to static (global) string buffer.
 */
static char *
#if defined(SSL_SUPPORT) || defined(ZLIB)
Option_String(CONN_ID Idx)
{
	static char option_txt[8];
	UINT16 options;

	assert(Idx != NONE);

	options = Conn_Options(Idx);
	strcpy(option_txt, "F");	/* No idea what this means, but the
					 * original ircd sends it ... */
#ifdef SSL_SUPPORT
	if(options & CONN_SSL)		/* SSL encrypted link */
		strlcat(option_txt, "s", sizeof(option_txt));
#endif
#ifdef ZLIB
	if(options & CONN_ZIP)		/* zlib compression enabled */
		strlcat(option_txt, "z", sizeof(option_txt));
#endif

	return option_txt;
#else
Option_String(UNUSED CONN_ID Idx)
{
	return "";
#endif
} /* Option_String */

/**
 * Send a message to target(s).
 *
 * This function is used by IRC_{PRIVMSG|NOTICE|SQUERY} to actualy
 * send the message(s).
 *
 * @param Client The client from which this command has been received.
 * @param Req Request structure with prefix and all parameters.
 * @param ForceType Required type of the destination of the message(s).
 * @param SendErrors Whether to report errors back to the client or not.
 * @return CONNECTED or DISCONNECTED.
 */
static bool
Send_Message(CLIENT * Client, REQUEST * Req, int ForceType, bool SendErrors)
{
	CLIENT *cl, *from;
	CL2CHAN *cl2chan;
	CHANNEL *chan;
	char *currentTarget = Req->argv[0];
	char *strtok_last = NULL;
	char *message = NULL;
	char *targets[MAX_HNDL_TARGETS];
	int i, target_nr = 0;

	assert(Client != NULL);
	assert(Req != NULL);

	if (Req->argc == 0) {
		if (!SendErrors)
			return CONNECTED;
		return IRC_WriteErrClient(Client, ERR_NORECIPIENT_MSG,
					  Client_ID(Client), Req->command);
	}
	if (Req->argc == 1) {
		if (!SendErrors)
			return CONNECTED;
		return IRC_WriteErrClient(Client, ERR_NOTEXTTOSEND_MSG,
					  Client_ID(Client));
	}
	if (Req->argc > 2) {
		if (!SendErrors)
			return CONNECTED;
		return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
					  Client_ID(Client), Req->command);
	}

	if (Client_Type(Client) == CLIENT_SERVER && Req->prefix)
		from = Client_Search(Req->prefix);
	else
		from = Client;
	if (!from)
		return IRC_WriteErrClient(Client, ERR_NOSUCHNICK_MSG,
					  Client_ID(Client), Req->prefix);

#ifdef ICONV
	if (Client_Conn(Client) > NONE)
		message = Conn_EncodingFrom(Client_Conn(Client), Req->argv[1]);
	else
#endif
		message = Req->argv[1];

	/* handle msgtarget = msgto *("," msgto) */
	currentTarget = strtok_r(currentTarget, ",", &strtok_last);
	ngt_UpperStr(Req->command);

	/* Please note that "currentTarget" is NULL when the target contains
	 * the separator character only, e. g. "," or ",,,," etc.! */
	while (currentTarget) {
		/* Make sure that there hasn't been such a target already: */
		targets[target_nr++] = currentTarget;
		for(i = 0; i < target_nr - 1; i++) {
			if (strcasecmp(currentTarget, targets[i]) == 0)
				goto send_next_target;
		}

		/* Check for and handle valid <msgto> of form:
		 * RFC 2812 2.3.1:
		 *   msgto =  channel / ( user [ "%" host ] "@" servername )
		 *   msgto =/ ( user "%" host ) / targetmask
		 *   msgto =/ nickname / ( nickname "!" user "@" host )
		 */
		if (strchr(currentTarget, '!') == NULL)
			/* nickname */
			cl = Client_Search(currentTarget);
		else
			cl = NULL;

		if (cl == NULL) {
			/* If currentTarget isn't a nickname check for:
			 * user ["%" host] "@" servername
			 * user "%" host
			 * nickname "!" user "@" host
			 */
			char target[COMMAND_LEN];
			char * nick = NULL;
			char * user = NULL;
			char * host = NULL;
			char * server = NULL;

			strlcpy(target, currentTarget, COMMAND_LEN);
			server = strchr(target, '@');
			if (server) {
				*server = '\0';
				server++;
			}
			host = strchr(target, '%');
			if (host) {
				*host = '\0';
				host++;
			}
			user = strchr(target, '!');
			if (user) {
				/* msgto form: nick!user@host */
				*user = '******';
				user++;
				nick = target;
				host = server; /* not "@server" but "@host" */
			} else {
				user = target;
			}

			for (cl = Client_First(); cl != NULL; cl = Client_Next(cl)) {
				if (Client_Type(cl) != CLIENT_USER &&
				    Client_Type(cl) != CLIENT_SERVICE)
					continue;
				if (nick != NULL && host != NULL) {
					if (strcasecmp(nick, Client_ID(cl)) == 0 &&
					    strcasecmp(user, Client_User(cl)) == 0 &&
					    strcasecmp(host, Client_HostnameDisplayed(cl)) == 0)
						break;
					else
						continue;
				}
				if (strcasecmp(user, Client_User(cl)) != 0)
					continue;
				if (host != NULL && strcasecmp(host,
						Client_HostnameDisplayed(cl)) != 0)
					continue;
				if (server != NULL && strcasecmp(server,
						Client_ID(Client_Introducer(cl))) != 0)
					continue;
				break;
			}
		}

		if (cl) {
			/* Target is a user, enforce type */
#ifndef STRICT_RFC
			if (Client_Type(cl) != ForceType &&
			    !(ForceType == CLIENT_USER &&
			      (Client_Type(cl) == CLIENT_USER ||
			       Client_Type(cl) == CLIENT_SERVICE))) {
#else
			if (Client_Type(cl) != ForceType) {
#endif
				if (SendErrors && !IRC_WriteErrClient(
				    from, ERR_NOSUCHNICK_MSG,Client_ID(from),
				    currentTarget))
					return DISCONNECTED;
				goto send_next_target;
			}

#ifndef STRICT_RFC
			if (ForceType == CLIENT_SERVICE &&
			    (Conn_Options(Client_Conn(Client_NextHop(cl)))
			     & CONN_RFC1459)) {
				/* SQUERY command but RFC 1459 link: convert
				 * request to PRIVMSG command */
				Req->command = "PRIVMSG";
			}
#endif
			if (Client_HasMode(cl, 'b') &&
			    !Client_HasMode(from, 'R') &&
			    !Client_HasMode(from, 'o') &&
			    !(Client_Type(from) == CLIENT_SERVER) &&
			    !(Client_Type(from) == CLIENT_SERVICE)) {
				if (SendErrors && !IRC_WriteErrClient(from,
						ERR_NONONREG_MSG,
						Client_ID(from), Client_ID(cl)))
					return DISCONNECTED;
				goto send_next_target;
			}

			if (Client_HasMode(cl, 'C') &&
			    !Client_HasMode(from, 'o') &&
			    !(Client_Type(from) == CLIENT_SERVER) &&
			    !(Client_Type(from) == CLIENT_SERVICE)) {
				cl2chan = Channel_FirstChannelOf(cl);
				while (cl2chan) {
					chan = Channel_GetChannel(cl2chan);
					if (Channel_IsMemberOf(chan, from))
						break;
					cl2chan = Channel_NextChannelOf(cl, cl2chan);
				}
				if (!cl2chan) {
					if (SendErrors && !IRC_WriteErrClient(
					    from, ERR_NOTONSAMECHANNEL_MSG,
					    Client_ID(from), Client_ID(cl)))
						return DISCONNECTED;
					goto send_next_target;
				}
			}

			if (SendErrors && (Client_Type(Client) != CLIENT_SERVER)
			    && Client_HasMode(cl, 'a')) {
				/* Target is away */
				if (!IRC_WriteStrClient(from, RPL_AWAY_MSG,
							Client_ID(from),
							Client_ID(cl),
							Client_Away(cl)))
					return DISCONNECTED;
			}
			if (Client_Conn(from) > NONE) {
				Conn_UpdateIdle(Client_Conn(from));
			}
			if (!IRC_WriteStrClientPrefix(cl, from, "%s %s :%s",
						      Req->command, Client_ID(cl),
						      message))
				return DISCONNECTED;
		} else if (ForceType != CLIENT_SERVICE
			   && (chan = Channel_Search(currentTarget))) {
			/* Target is a channel */
			if (!Channel_Write(chan, from, Client, Req->command,
					   SendErrors, message))
					return DISCONNECTED;
		} else if (ForceType != CLIENT_SERVICE
			   && strchr("$#", currentTarget[0])
			   && strchr(currentTarget, '.')) {
			/* $#: server/host mask, RFC 2812, sec. 3.3.1 */
			if (!Send_Message_Mask(from, Req->command, currentTarget,
					       message, SendErrors))
				return DISCONNECTED;
		} else {
			if (!SendErrors)
				return CONNECTED;
			if (!IRC_WriteErrClient(from, ERR_NOSUCHNICK_MSG,
						Client_ID(from), currentTarget))
				return DISCONNECTED;
		}

	send_next_target:
		currentTarget = strtok_r(NULL, ",", &strtok_last);
		if (!currentTarget)
			break;

		Conn_SetPenalty(Client_Conn(Client), 1);

		if (target_nr >= MAX_HNDL_TARGETS) {
			/* Too many targets given! */
			return IRC_WriteErrClient(Client,
						  ERR_TOOMANYTARGETS_MSG,
						  currentTarget);
		}
	}

	return CONNECTED;
} /* Send_Message */

/**
 * Send a message to "target mask" target(s).
 *
 * See RFC 2812, sec. 3.3.1 for details.
 *
 * @param from The client from which this command has been received.
 * @param command The command to use (PRIVMSG, NOTICE, ...).
 * @param targetMask The "target mask" (will be verified by this function).
 * @param message The message to send.
 * @param SendErrors Whether to report errors back to the client or not.
 * @return CONNECTED or DISCONNECTED.
 */
static bool
Send_Message_Mask(CLIENT * from, char * command, char * targetMask,
		  char * message, bool SendErrors)
{
	CLIENT *cl;
	bool client_match;
	char *mask = targetMask + 1;
	const char *check_wildcards;

	cl = NULL;

	if (!Client_HasMode(from, 'o')) {
		if (!SendErrors)
			return true;
		return IRC_WriteErrClient(from, ERR_NOPRIVILEGES_MSG,
					  Client_ID(from));
	}

	/*
	 * RFC 2812, sec. 3.3.1 requires that targetMask have at least one
	 * dot (".") and no wildcards ("*", "?") following the last one.
	 */
	check_wildcards = strrchr(targetMask, '.');
	if (!check_wildcards || check_wildcards[strcspn(check_wildcards, "*?")]) {
		if (!SendErrors)
			return true;
		return IRC_WriteErrClient(from, ERR_WILDTOPLEVEL_MSG,
					  targetMask);
	}

	if (targetMask[0] == '#') {
		/* #: hostmask, see RFC 2812, sec. 3.3.1 */
		for (cl = Client_First(); cl != NULL; cl = Client_Next(cl)) {
			if (Client_Type(cl) != CLIENT_USER)
				continue;
			client_match = MatchCaseInsensitive(mask, Client_Hostname(cl));
			if (client_match)
				if (!IRC_WriteStrClientPrefix(cl, from, "%s %s :%s",
						command, Client_ID(cl), message))
					return false;
		}
	} else {
		/* $: server mask, see RFC 2812, sec. 3.3.1 */
		assert(targetMask[0] == '$');
		for (cl = Client_First(); cl != NULL; cl = Client_Next(cl)) {
			if (Client_Type(cl) != CLIENT_USER)
				continue;
			client_match = MatchCaseInsensitive(mask,
					Client_ID(Client_Introducer(cl)));
			if (client_match)
				if (!IRC_WriteStrClientPrefix(cl, from, "%s %s :%s",
						command, Client_ID(cl), message))
					return false;
		}
	}
	return CONNECTED;
} /* Send_Message_Mask */
예제 #5
0
파일: numeric.c 프로젝트: LucentW/ngircd
/**
 * Handle ENDOFMOTD (376) numeric and login remote server.
 * The peer is either an IRC server (no IRC+ protocol), or we got the
 * ENDOFMOTD numeric from an IRC+ server. We have to register the new server.
 */
GLOBAL bool
IRC_Num_ENDOFMOTD(CLIENT * Client, UNUSED REQUEST * Req)
{
	int max_hops, i;
	CLIENT *c;
	CHANNEL *chan;

	Client_SetType(Client, CLIENT_SERVER);

	Log(LOG_NOTICE | LOG_snotice,
	    "Server \"%s\" registered (connection %d, 1 hop - direct link).",
	    Client_ID(Client), Client_Conn(Client));

	/* Get highest hop count */
	max_hops = 0;
	c = Client_First();
	while (c) {
		if (Client_Hops(c) > max_hops)
			max_hops = Client_Hops(c);
		c = Client_Next(c);
	}

	/* Inform the new server about all other servers, and announce the
	 * new server to all the already registered ones. Important: we have
	 * to do this "in order" and can't introduce servers of which the
	 * "toplevel server" isn't known already. */
	for (i = 0; i < (max_hops + 1); i++) {
		for (c = Client_First(); c != NULL; c = Client_Next(c)) {
			if (Client_Type(c) != CLIENT_SERVER)
				continue;	/* not a server */
			if (Client_Hops(c) != i)
				continue;	/* not actual "nesting level" */
			if (c == Client || c == Client_ThisServer())
				continue;	/* that's us or the peer! */

			if (!Announce_Server(Client, c))
				return DISCONNECTED;
		}
	}

	/* Announce all the users to the new server */
	c = Client_First();
	while (c) {
		if (Client_Type(c) == CLIENT_USER ||
		    Client_Type(c) == CLIENT_SERVICE) {
			if (!Client_Announce(Client, Client_ThisServer(), c))
				return DISCONNECTED;
		}
		c = Client_Next(c);
	}

	/* Announce all channels to the new server */
	chan = Channel_First();
	while (chan) {
		if (Channel_IsLocal(chan)) {
			chan = Channel_Next(chan);
			continue;
		}
#ifdef IRCPLUS
		/* Send CHANINFO if the peer supports it */
		if (Client_HasFlag(Client, 'C')) {
			if (!Send_CHANINFO(Client, chan))
				return DISCONNECTED;
		}
#endif

		if (!Announce_Channel(Client, chan))
			return DISCONNECTED;

		/* Get next channel ... */
		chan = Channel_Next(chan);
	}

#ifdef IRCPLUS
	if (Client_HasFlag(Client, 'L')) {
		LogDebug("Synchronizing INVITE- and BAN-lists ...");
		if (!Synchronize_Lists(Client))
			return DISCONNECTED;
	}
#endif

	if (!IRC_WriteStrClient(Client, "PING :%s",
	    Client_ID(Client_ThisServer())))
		return DISCONNECTED;

	return CONNECTED;
} /* IRC_Num_ENDOFMOTD */