X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd-alex.git;a=blobdiff_plain;f=src%2Fngircd%2Firc-info.c;h=54f83170e3bceea94828acb1baf83de868a43261;hp=22c65aa2a426cd6a36aba7d42d853391db6f984c;hb=48326e061aacd954e24f76c53ded10448cbc28eb;hpb=fa8b83e69b0d7edcfdcf8f0a4496c79f9c5ec161

diff --git a/src/ngircd/irc-info.c b/src/ngircd/irc-info.c
index 22c65aa2..54f83170 100644
--- a/src/ngircd/irc-info.c
+++ b/src/ngircd/irc-info.c
@@ -1,6 +1,6 @@
 /*
  * ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2011 Alexander Barton (alex@barton.de) and Contributors.
+ * Copyright (c)2001-2012 Alexander Barton (alex@barton.de) and Contributors.
  *
  * 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
@@ -28,14 +28,18 @@
 #include "conn-func.h"
 #include "conn-zip.h"
 #include "channel.h"
+#include "class.h"
 #include "conf.h"
 #include "defines.h"
+#include "lists.h"
 #include "log.h"
 #include "messages.h"
 #include "match.h"
 #include "tool.h"
 #include "parse.h"
+#include "irc.h"
 #include "irc-write.h"
+#include "client-cap.h"
 
 #include "exp.h"
 #include "irc-info.h"
@@ -113,7 +117,7 @@ IRC_INFO(CLIENT * Client, REQUEST * Req)
 		target = Client_Search(Req->argv[0]);
 	else
 		target = Client_ThisServer();
-	
+
 	/* Make sure that the target is a server */
 	if (target && Client_Type(target) != CLIENT_SERVER)
 		target = Client_Introducer(target);
@@ -152,6 +156,15 @@ IRC_INFO(CLIENT * Client, REQUEST * Req)
 } /* IRC_INFO */
 
 
+/**
+ * Handler for the IRC "ISON" command.
+ *
+ * See RFC 2812, 4.9 "Ison message".
+ *
+ * @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_ISON( CLIENT *Client, REQUEST *Req )
 {
@@ -160,80 +173,103 @@ IRC_ISON( CLIENT *Client, REQUEST *Req )
 	char *ptr;
 	int i;
 
-	assert( Client != NULL );
-	assert( Req != NULL );
+	assert(Client != NULL);
+	assert(Req != NULL);
 
-	/* Falsche Anzahl Parameter? */
-	if(( Req->argc < 1 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+	/* Bad number of arguments? */
+	if (Req->argc < 1)
+		return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+					  Client_ID(Client), Req->command);
 
-	strlcpy( rpl, RPL_ISON_MSG, sizeof rpl );
-	for( i = 0; i < Req->argc; i++ )
-	{
-		ptr = strtok( Req->argv[i], " " );
-		while( ptr )
-		{
-			ngt_TrimStr( ptr );
-			c = Client_Search( ptr );
-			if( c && ( Client_Type( c ) == CLIENT_USER ))
-			{
-				/* Dieser Nick ist "online" */
-				strlcat( rpl, ptr, sizeof( rpl ));
-				strlcat( rpl, " ", sizeof( rpl ));
+	strlcpy(rpl, RPL_ISON_MSG, sizeof rpl);
+	for (i = 0; i < Req->argc; i++) {
+		/* "All" ircd even parse ":<x> <y> ..." arguments and split
+		 * them up; so we do the same ... */
+		ptr = strtok(Req->argv[i], " ");
+		while (ptr) {
+			ngt_TrimStr(ptr);
+			c = Client_Search(ptr);
+			if (c && Client_Type(c) == CLIENT_USER) {
+				strlcat(rpl, Client_ID(c), sizeof(rpl));
+				strlcat(rpl, " ", sizeof(rpl));
 			}
-			ptr = strtok( NULL, " " );
+			ptr = strtok(NULL, " ");
 		}
 	}
 	ngt_TrimLastChr(rpl, ' ');
 
-	return IRC_WriteStrClient( Client, rpl, Client_ID( Client ) );
+	return IRC_WriteStrClient(Client, rpl, Client_ID(Client));
 } /* IRC_ISON */
 
 
+/**
+ * Handler for the IRC "LINKS" command.
+ *
+ * See RFC 2812, 3.4.5 "Links message".
+ *
+ * @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_LINKS( CLIENT *Client, REQUEST *Req )
+IRC_LINKS(CLIENT *Client, REQUEST *Req)
 {
 	CLIENT *target, *from, *c;
 	char *mask;
 
-	assert( Client != NULL );
-	assert( Req != NULL );
+	assert(Client != NULL);
+	assert(Req != NULL);
 
-	if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+	IRC_SetPenalty(Client, 1);
 
-	/* Server-Mask ermitteln */
-	if( Req->argc > 0 ) mask = Req->argv[Req->argc - 1];
-	else mask = "*";
+	if (Req->argc > 2)
+		return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+					  Client_ID(Client), Req->command);
 
-	/* Absender ermitteln */
-	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 );
+	/* Get pointer to server mask or "*", if none given */
+	if (Req->argc > 0)
+		mask = Req->argv[Req->argc - 1];
+	else
+		mask = "*";
 
-	/* An anderen Server forwarden? */
-	if( Req->argc == 2 )
-	{
-		target = Client_Search( Req->argv[0] );
-		if(( ! target ) || ( Client_Type( target ) != CLIENT_SERVER )) return IRC_WriteStrClient( from, ERR_NOSUCHSERVER_MSG, Client_ID( from ), Req->argv[0] );
-		else if( target != Client_ThisServer( )) return IRC_WriteStrClientPrefix( target, from, "LINKS %s %s", Req->argv[0], Req->argv[1] );
-	}
+	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);
 
-	/* Wer ist der Absender? */
-	if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
-	else target = Client;
-	if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
+	/* Forward? */
+	if (Req->argc == 2) {
+		target = Client_Search(Req->argv[0]);
+		if (! target || Client_Type(target) != CLIENT_SERVER)
+			return IRC_WriteStrClient(from, ERR_NOSUCHSERVER_MSG,
+						  Client_ID(from),
+						  Req->argv[0] );
+		else
+			if (target != Client_ThisServer())
+				return IRC_WriteStrClientPrefix(target, from,
+						"LINKS %s %s", Req->argv[0],
+						Req->argv[1]);
+	}
 
-	c = Client_First( );
-	while( c )
-	{
-		if( Client_Type( c ) == CLIENT_SERVER )
-		{
-			if( ! IRC_WriteStrClient( target, RPL_LINKS_MSG, Client_ID( target ), Client_ID( c ), Client_ID( Client_TopServer( c ) ? Client_TopServer( c ) : Client_ThisServer( )), Client_Hops( c ), Client_Info( c ))) return DISCONNECTED;
+	c = Client_First();
+	while (c) {
+		if (Client_Type(c) == CLIENT_SERVER
+		    && MatchCaseInsensitive(mask, Client_ID(c))) {
+			if (!IRC_WriteStrClient(from, RPL_LINKS_MSG,
+					Client_ID(from), Client_ID(c),
+					Client_ID(Client_TopServer(c)
+						  ? Client_TopServer(c)
+						  : Client_ThisServer()),
+					Client_Hops(c), Client_Info(c)))
+				return DISCONNECTED;
 		}
-		c = Client_Next( c );
+		c = Client_Next(c);
 	}
-	
-	IRC_SetPenalty( target, 1 );
-	return IRC_WriteStrClient( target, RPL_ENDOFLINKS_MSG, Client_ID( target ), mask );
+	return IRC_WriteStrClient(from, RPL_ENDOFLINKS_MSG,
+				  Client_ID(from), mask);
 } /* IRC_LINKS */
 
 
@@ -478,6 +514,8 @@ IRC_STATS( CLIENT *Client, REQUEST *Req )
 	COMMAND *cmd;
 	time_t time_now;
 	unsigned int days, hrs, mins;
+	struct list_head *list;
+	struct list_elem *list_item;
 
 	assert(Client != NULL);
 	assert(Req != NULL);
@@ -516,6 +554,28 @@ IRC_STATS( CLIENT *Client, REQUEST *Req )
 		query = '*';
 
 	switch (query) {
+	case 'g':	/* Network-wide bans ("G-Lines") */
+	case 'G':
+	case 'k':	/* Server-local bans ("K-Lines") */
+	case 'K':
+		if (!Client_HasMode(from, 'o'))
+		    return IRC_WriteStrClient(from, ERR_NOPRIVILEGES_MSG,
+					      Client_ID(from));
+		if (query == 'g' || query == 'G')
+			list = Class_GetList(CLASS_GLINE);
+		else
+			list = Class_GetList(CLASS_KLINE);
+			list_item = Lists_GetFirst(list);
+			while (list_item) {
+				if (!IRC_WriteStrClient(from, RPL_STATSXLINE_MSG,
+						Client_ID(from), query,
+						Lists_GetMask(list_item),
+						Lists_GetValidity(list_item),
+						Lists_GetReason(list_item)))
+					return DISCONNECTED;
+				list_item = Lists_GetNext(list_item);
+			}
+		break;
 	case 'l':	/* Link status (servers and own link) */
 	case 'L':
 		time_now = time(NULL);
@@ -589,10 +649,10 @@ IRC_STATS( CLIENT *Client, REQUEST *Req )
  * therefore answers with ERR_SUMMONDISABLED.
  */
 GLOBAL bool
-IRC_SUMMON(CLIENT * Client, REQUEST * Req)
+IRC_SUMMON(CLIENT * Client, UNUSED REQUEST * Req)
 {
 	return IRC_WriteStrClient(Client, ERR_SUMMONDISABLED_MSG,
-				  Client_ID(Client), Req->command);
+				  Client_ID(Client));
 } /* IRC_SUMMON */
 
 
@@ -682,10 +742,10 @@ IRC_USERHOST(CLIENT *Client, REQUEST *Req)
  * See RFC 2812 section 4.6. As suggested there the command is disabled.
  */
 GLOBAL bool
-IRC_USERS(CLIENT * Client, REQUEST * Req)
+IRC_USERS(CLIENT * Client, UNUSED REQUEST * Req)
 {
 	return IRC_WriteStrClient(Client, ERR_USERSDISABLED_MSG,
-				  Client_ID(Client), Req->command);
+				  Client_ID(Client));
 } /* IRC_USERS */
 
 
@@ -747,35 +807,80 @@ who_flags_status(const char *client_modes)
 }
 
 
-static const char *
-who_flags_qualifier(const char *chan_user_modes)
+/**
+ * Return channel user mode prefix(es).
+ *
+ * @param Client The client requesting the mode prefixes.
+ * @param chan_user_modes String with channel user modes.
+ * @param str String buffer to which the prefix(es) will be appended.
+ * @param len Size of "str" buffer.
+ * @return Pointer to "str".
+ */
+static char *
+who_flags_qualifier(CLIENT *Client, const char *chan_user_modes,
+		    char *str, size_t len)
 {
-	if (strchr(chan_user_modes, 'o'))
-		return "@";
+	assert(Client != NULL);
+
+	if (Client_Cap(Client) & CLIENT_CAP_MULTI_PREFIX) {
+		if (strchr(chan_user_modes, 'q'))
+			strlcat(str, "~", len);
+		if (strchr(chan_user_modes, 'a'))
+			strlcat(str, "&", len);
+		if (strchr(chan_user_modes, 'o'))
+			strlcat(str, "@", len);
+		if (strchr(chan_user_modes, 'h'))
+			strlcat(str, "%", len);
+		if (strchr(chan_user_modes, 'v'))
+			strlcat(str, "+", len);
+
+		return str;
+	}
+
+	if (strchr(chan_user_modes, 'q'))
+		strlcat(str, "~", len);
+	else if (strchr(chan_user_modes, 'a'))
+		strlcat(str, "&", len);
+	else if (strchr(chan_user_modes, 'o'))
+		strlcat(str, "@", len);
+	else if (strchr(chan_user_modes, 'h'))
+		strlcat(str, "%", len);
 	else if (strchr(chan_user_modes, 'v'))
-		return "+";
-	return "";
+		strlcat(str, "+", len);
+
+	return str;
 }
 
 
+/**
+ * Send WHO reply for a "channel target" ("WHO #channel").
+ *
+ * @param Client Client requesting the information.
+ * @param Chan Channel being requested.
+ * @param OnlyOps Only display IRC operators.
+ * @return CONNECTED or DISCONNECTED.
+ */
 static bool
-IRC_Send_WHO(CLIENT *Client, CHANNEL *Chan, bool OnlyOps)
+IRC_WHO_Channel(CLIENT *Client, CHANNEL *Chan, bool OnlyOps)
 {
 	bool is_visible, is_member, is_ircop;
 	CL2CHAN *cl2chan;
 	const char *client_modes;
-	const char *chan_user_modes;
-	char flags[8];
+	char flags[10];
 	CLIENT *c;
+	int count = 0;
 
 	assert( Client != NULL );
 	assert( Chan != NULL );
 
+	IRC_SetPenalty(Client, 1);
+
 	is_member = Channel_IsMemberOf(Chan, Client);
 
 	/* Secret channel? */
 	if (!is_member && strchr(Channel_Modes(Chan), 's'))
-		return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan));
+		return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG,
+					  Client_ID(Client), Channel_Name(Chan));
 
 	cl2chan = Channel_FirstMember(Chan);
 	for (; cl2chan ; cl2chan = Channel_NextMember(Chan, cl2chan)) {
@@ -792,137 +897,174 @@ IRC_Send_WHO(CLIENT *Client, CHANNEL *Chan, bool OnlyOps)
 			if (is_ircop)
 				strlcat(flags, "*", sizeof(flags));
 
-			chan_user_modes = Channel_UserModes(Chan, c);
-			strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags));
+			who_flags_qualifier(Client, Channel_UserModes(Chan, c),
+					    flags, sizeof(flags));
 
-			if (!write_whoreply(Client, c, Channel_Name(Chan), flags))
+			if (!write_whoreply(Client, c, Channel_Name(Chan),
+					    flags))
 				return DISCONNECTED;
+			count++;
 		}
 	}
-	return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), Channel_Name(Chan));
-} /* IRC_Send_WHO */
-
 
-GLOBAL bool
-IRC_WHO( CLIENT *Client, REQUEST *Req )
-{
-	bool only_ops, have_arg, client_match;
-	const char *channelname, *client_modes, *chan_user_modes;
-	char pattern[COMMAND_LEN];
-	char flags[4];
-	CL2CHAN *cl2chan;
-	CHANNEL *chan, *cn;
-	CLIENT *c;
+	/* If there are a lot of clients, augment penalty a bit */
+	if (count > MAX_RPL_WHO)
+		IRC_SetPenalty(Client, 1);
 
-	assert( Client != NULL );
-	assert( Req != NULL );
+	return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client),
+				  Channel_Name(Chan));
+}
 
-	if (Req->argc > 2)
-		return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
 
-	only_ops = false;
-	have_arg = false;
+/**
+ * Send WHO reply for a "mask target" ("WHO m*sk").
+ *
+ * @param Client Client requesting the information.
+ * @param Mask Mask being requested or NULL for "all" clients.
+ * @param OnlyOps Only display IRC operators.
+ * @return CONNECTED or DISCONNECTED.
+ */
+static bool
+IRC_WHO_Mask(CLIENT *Client, char *Mask, bool OnlyOps)
+{
+	CLIENT *c;
+	CL2CHAN *cl2chan;
+	CHANNEL *chan;
+	bool client_match, is_visible;
+	char flags[4];
+	int count = 0;
 
-	if (Req->argc == 2) {
-		if (strcmp(Req->argv[1], "o") == 0)
-			only_ops = true;
-#ifdef STRICT_RFC
-		else return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG, Client_ID(Client), Req->command);
-#endif
-	}
+	assert (Client != NULL);
 
-	IRC_SetPenalty(Client, 1);
-	if (Req->argc >= 1) { /* Channel or Mask. */
-		chan = Channel_Search(Req->argv[0]);
-		if (chan)
-			return IRC_Send_WHO(Client, chan, only_ops);
-		if (strcmp(Req->argv[0], "0") != 0) { /* RFC stupidity, same as no arguments */
-			have_arg = true;
-			strlcpy(pattern, Req->argv[0], sizeof(pattern));
-			ngt_LowerStr(pattern);
-			IRC_SetPenalty(Client, 3);
-		}
-	}
+	if (Mask)
+		ngt_LowerStr(Mask);
 
+	IRC_SetPenalty(Client, 3);
 	for (c = Client_First(); c != NULL; c = Client_Next(c)) {
 		if (Client_Type(c) != CLIENT_USER)
 			continue;
-		 /*
-		  * RFC 2812, 3.6.1:
-		  * In the absence of the parameter, all visible (users who aren't
-		  * invisible (user mode +i) and who don't have a common channel
-		  * with the requesting client) are listed.
-		  *
-		  * The same result can be achieved by using a [sic] of "0"
-		  * or any wildcard which will end up matching every visible user.
-		  *
-		  * The [sic] passed to WHO is matched against users' host, server, real name and
-		  * nickname if the channel cannot be found.
-		  */
-		client_modes = Client_Modes(c);
-		if (strchr(client_modes, 'i'))
-			continue;
 
-		if (only_ops && !strchr(client_modes, 'o'))
+		if (OnlyOps && !Client_HasMode(c, 'o'))
 			continue;
 
-		if (have_arg) { /* match pattern against user host/server/name/nick */
-			client_match = MatchCaseInsensitive(pattern, Client_Hostname(c)); /* user's host */
+		if (Mask) {
+			/* Match pattern against user host/server/name/nick */
+			client_match = MatchCaseInsensitive(Mask,
+						Client_Hostname(c));
 			if (!client_match)
-				client_match = MatchCaseInsensitive(pattern, Client_ID(Client_Introducer(c))); /* server */
+				client_match = MatchCaseInsensitive(Mask,
+						Client_ID(Client_Introducer(c)));
 			if (!client_match)
-				client_match = Match(Req->argv[0], Client_Info(c)); /* realname */
+				client_match = MatchCaseInsensitive(Mask,
+						Client_Info(c));
 			if (!client_match)
-				client_match = MatchCaseInsensitive(pattern, Client_ID(c)); /* nick name */
-
-			if (!client_match) /* This isn't the client you're looking for */
-				continue;
+				client_match = MatchCaseInsensitive(Mask,
+						Client_ID(c));
+			if (!client_match)
+				continue;	/* no match: skip this client */
 		}
 
-		strcpy(flags, who_flags_status(client_modes));
+		is_visible = !Client_HasMode(c, 'i');
 
-		if (strchr(client_modes, 'o')) /* this client is an operator */
-			strlcat(flags, "*", sizeof(flags));
+		/* Target client is invisible, but mask matches exactly? */
+		if (!is_visible && Mask && strcasecmp(Client_ID(c), Mask) == 0)
+			is_visible = true;
 
-		/* Search suitable channel */
-		cl2chan = Channel_FirstChannelOf(c);
-		while (cl2chan) {
-			cn = Channel_GetChannel(cl2chan);
-			if (Channel_IsMemberOf(cn, Client) ||
-				    !strchr(Channel_Modes(cn), 's'))
-			{
-				channelname = Channel_Name(cn);
-				break;
+		/* Target still invisible, but are both on the same channel? */
+		if (!is_visible) {
+			cl2chan = Channel_FirstChannelOf(Client);
+			while (cl2chan && !is_visible) {
+				chan = Channel_GetChannel(cl2chan);
+				if (Channel_IsMemberOf(chan, c))
+					is_visible = true;
+				cl2chan = Channel_NextChannelOf(Client, cl2chan);
 			}
-			cl2chan = Channel_NextChannelOf(c, cl2chan);
 		}
-		if (cl2chan) {
-			chan = Channel_GetChannel(cl2chan);
-			chan_user_modes = Channel_UserModes(chan, c);
-			strlcat(flags, who_flags_qualifier(chan_user_modes), sizeof(flags));
-		} else
-			channelname = "*";
-
-		if (!write_whoreply(Client, c, channelname, flags))
+
+		if (!is_visible)	/* target user is not visible */
+			continue;
+
+		if (IRC_CheckListTooBig(Client, count, MAX_RPL_WHO, "WHO"))
+			break;
+
+		strcpy(flags, who_flags_status(Client_Modes(c)));
+		if (strchr(Client_Modes(c), 'o'))
+			strlcat(flags, "*", sizeof(flags));
+
+		if (!write_whoreply(Client, c, "*", flags))
 			return DISCONNECTED;
+		count++;
 	}
 
-	if (Req->argc > 0)
-		channelname = Req->argv[0];
-	else
-		channelname = "*";
+	return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client),
+				  Mask ? Mask : "*");
+}
+
+
+/**
+ * Handler for the IRC "WHO" command.
+ *
+ * See RFC 2812, 3.6.1 "Who query".
+ *
+ * @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_WHO(CLIENT *Client, REQUEST *Req)
+{
+	bool only_ops;
+	CHANNEL *chan;
+
+	assert (Client != NULL);
+	assert (Req != NULL);
 
-	return IRC_WriteStrClient(Client, RPL_ENDOFWHO_MSG, Client_ID(Client), channelname);
+	if (Req->argc > 2)
+		return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+					  Client_ID(Client), Req->command);
+
+	only_ops = false;
+
+	if (Req->argc == 2) {
+		if (strcmp(Req->argv[1], "o") == 0)
+			only_ops = true;
+#ifdef STRICT_RFC
+		else
+			return IRC_WriteStrClient(Client,
+						  ERR_NEEDMOREPARAMS_MSG,
+						  Client_ID(Client),
+						  Req->command);
+#endif
+	}
+
+	IRC_SetPenalty(Client, 1);
+	if (Req->argc >= 1) {
+		/* Channel or mask given */
+		chan = Channel_Search(Req->argv[0]);
+		if (chan) {
+			/* Members of a channel have been requested */
+			return IRC_WHO_Channel(Client, chan, only_ops);
+		}
+		if (strcmp(Req->argv[0], "0") != 0) {
+			/* A mask has been given. But please note this RFC
+			 * stupidity: "0" is same as no arguments ... */
+			return IRC_WHO_Mask(Client, Req->argv[0], only_ops);
+		}
+	}
+
+	/* No channel or (valid) mask given */
+	IRC_SetPenalty(Client, 2);
+	return IRC_WHO_Mask(Client, NULL, only_ops);
 } /* IRC_WHO */
 
 
 /**
  * Generate WHOIS reply of one actual client.
  *
- * @param Client	The client from which this command has been received.
- * @param from		The client requesting the information ("originator").
- * @param c		The client of which information should be returned.
- * @returns		CONNECTED or DISCONNECTED.
+ * @param Client The client from which this command has been received.
+ * @param from The client requesting the information ("originator").
+ * @param c The client of which information should be returned.
+ * @return CONNECTED or DISCONNECTED.
  */
 static bool
 IRC_WHOIS_SendReply(CLIENT *Client, CLIENT *from, CLIENT *c)
@@ -931,6 +1073,10 @@ IRC_WHOIS_SendReply(CLIENT *Client, CLIENT *from, CLIENT *c)
 	CL2CHAN *cl2chan;
 	CHANNEL *chan;
 
+	assert(Client != NULL);
+	assert(from != NULL);
+	assert(c != NULL);
+
 	/* Nick, user, hostname and client info */
 	if (!IRC_WriteStrClient(from, RPL_WHOISUSER_MSG, Client_ID(from),
 				Client_ID(c), Client_User(c),
@@ -968,8 +1114,8 @@ IRC_WHOIS_SendReply(CLIENT *Client, CLIENT *from, CLIENT *c)
 		if (str[strlen(str) - 1] != ':')
 			strlcat(str, " ", sizeof(str));
 
-		strlcat(str, who_flags_qualifier(Channel_UserModes(chan, c)),
-						 sizeof(str));
+		who_flags_qualifier(Client, Channel_UserModes(chan, c),
+				    str, sizeof(str));
 		strlcat(str, Channel_Name(chan), sizeof(str));
 
 		if (strlen(str) > (LINE_LEN - CHANNEL_NAME_LEN - 4)) {
@@ -988,33 +1134,57 @@ IRC_WHOIS_SendReply(CLIENT *Client, CLIENT *from, CLIENT *c)
 
 	/* IRC-Operator? */
 	if (Client_HasMode(c, 'o') &&
-		!IRC_WriteStrClient(from, RPL_WHOISOPERATOR_MSG,
-				    Client_ID(from), Client_ID(c)))
-			return DISCONNECTED;
+	    !IRC_WriteStrClient(from, RPL_WHOISOPERATOR_MSG,
+				Client_ID(from), Client_ID(c)))
+		return DISCONNECTED;
+
+	/* IRC-Bot? */
+	if (Client_HasMode(c, 'B') &&
+	    !IRC_WriteStrClient(from, RPL_WHOISBOT_MSG,
+				Client_ID(from), Client_ID(c)))
+		return DISCONNECTED;
 
 	/* Connected using SSL? */
 	if (Conn_UsesSSL(Client_Conn(c)) &&
-		!IRC_WriteStrClient(from, RPL_WHOISSSL_MSG,
-				    Client_ID(from), Client_ID(c)))
-			return DISCONNECTED;
+	    !IRC_WriteStrClient(from, RPL_WHOISSSL_MSG, Client_ID(from),
+				Client_ID(c)))
+		return DISCONNECTED;
 
-	/* Idle and signon time (local clients only!) */
+	/* Registered nickname? */
+	if (Client_HasMode(c, 'R') &&
+	    !IRC_WriteStrClient(from, RPL_WHOISREGNICK_MSG,
+				Client_ID(from), Client_ID(c)))
+		return DISCONNECTED;
+
+	/* Local client and requester is the user itself or an IRC Op? */
 	if (Client_Conn(c) > NONE &&
-		!IRC_WriteStrClient(from, RPL_WHOISIDLE_MSG,
-				    Client_ID(from), Client_ID(c),
-				    (unsigned long)Conn_GetIdle(Client_Conn(c)),
-				    (unsigned long)Conn_GetSignon(Client_Conn(c))))
+	    (from == c || (!Conf_MorePrivacy && Client_HasMode(from, 'o')))) {
+		/* Client hostname */
+		if (!IRC_WriteStrClient(from, RPL_WHOISHOST_MSG,
+		    Client_ID(from), Client_ID(c), Client_Hostname(c),
+		    Conn_GetIPAInfo(Client_Conn(c))))
+			return DISCONNECTED;
+		/* Client modes */
+		if (!IRC_WriteStrClient(from, RPL_WHOISMODES_MSG,
+		    Client_ID(from), Client_ID(c), Client_Modes(c)))
 			return DISCONNECTED;
+	}
+
+	/* Idle and signon time (local clients only!) */
+	if (!Conf_MorePrivacy && Client_Conn(c) > NONE &&
+	    !IRC_WriteStrClient(from, RPL_WHOISIDLE_MSG,
+				Client_ID(from), Client_ID(c),
+				(unsigned long)Conn_GetIdle(Client_Conn(c)),
+				(unsigned long)Conn_GetSignon(Client_Conn(c))))
+		return DISCONNECTED;
 
 	/* Away? */
 	if (Client_HasMode(c, 'a') &&
-		!IRC_WriteStrClient(from, RPL_AWAY_MSG,
-				    Client_ID(from), Client_ID(c),
-				    Client_Away(c)))
-			return DISCONNECTED;
+	    !IRC_WriteStrClient(from, RPL_AWAY_MSG,
+				Client_ID(from), Client_ID(c), Client_Away(c)))
+		return DISCONNECTED;
 
-	return IRC_WriteStrClient(from, RPL_ENDOFWHOIS_MSG,
-				  Client_ID(from), Client_ID(c));
+	return CONNECTED;
 } /* IRC_WHOIS_SendReply */
 
 
@@ -1034,7 +1204,7 @@ IRC_WHOIS( CLIENT *Client, REQUEST *Req )
 	unsigned int match_count = 0, found = 0;
 	bool has_wildcards, is_remote;
 	bool got_wildcard = false;
-	const char *query;
+	char mask[COMMAND_LEN], *query;
 
 	assert( Client != NULL );
 	assert( Req != NULL );
@@ -1058,7 +1228,7 @@ IRC_WHOIS( CLIENT *Client, REQUEST *Req )
 	/* Get target server for this command */
 	if (Req->argc > 1) {
 		/* Search the target server, which can be specified as a
-		 * nick name on that server as well: */
+		 * nickname on that server as well: */
 		target = Client_Search(Req->argv[0]);
 		if (!target)
 			return IRC_WriteStrClient(from, ERR_NOSUCHSERVER_MSG,
@@ -1075,7 +1245,8 @@ IRC_WHOIS( CLIENT *Client, REQUEST *Req )
 						Req->argv[0], Req->argv[1]);
 
 	is_remote = Client_Conn(from) < 0;
-	for (query = strtok(Req->argv[Req->argc - 1], ",");
+	strlcpy(mask, Req->argv[Req->argc - 1], sizeof(mask));
+	for (query = strtok(ngt_LowerStr(mask), ",");
 			query && found < 3;
 			query = strtok(NULL, ","), found++)
 	{
@@ -1086,11 +1257,11 @@ IRC_WHOIS( CLIENT *Client, REQUEST *Req )
 		 *  - no wildcards for remote clients
 		 *  - only one wildcard target per local client
 		 *
-		 *  also, at most ten matches are returned.
+		 *  Also, at most MAX_RPL_WHOIS matches are returned.
 		 */
 		if (!has_wildcards || is_remote) {
 			c = Client_Search(query);
-			if (c) {
+			if (c && Client_Type(c) == CLIENT_USER) {
 				if (!IRC_WHOIS_SendReply(Client, from, c))
 					return DISCONNECTED;
 			} else {
@@ -1112,21 +1283,28 @@ IRC_WHOIS( CLIENT *Client, REQUEST *Req )
 		got_wildcard = true;
 		IRC_SetPenalty(Client, 3);
 
-		for (c = Client_First(); c && match_count < 10; c = Client_Next(c)) {
+		for (c = Client_First(); c; c = Client_Next(c)) {
+			if (IRC_CheckListTooBig(Client, match_count,
+					    MAX_RPL_WHOIS, "WHOIS"))
+				break;
+
 			if (Client_Type(c) != CLIENT_USER)
 				continue;
 			if (!MatchCaseInsensitive(query, Client_ID(c)))
 				continue;
 			if (!IRC_WHOIS_SendReply(Client, from, c))
 				return DISCONNECTED;
+
 			match_count++;
 		}
 
 		if (match_count == 0)
-			return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
-				Client_ID(Client), Req->argv[Req->argc - 1]);
+			IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
+					   Client_ID(Client),
+					   Req->argv[Req->argc - 1]);
 	}
-	return CONNECTED;
+	return IRC_WriteStrClient(from, RPL_ENDOFWHOIS_MSG,
+				  Client_ID(from), Req->argv[Req->argc - 1]);
 } /* IRC_WHOIS */
 
 
@@ -1163,6 +1341,10 @@ IRC_WHOWAS( CLIENT *Client, REQUEST *Req )
 	assert( Client != NULL );
 	assert( Req != NULL );
 
+	/* Do not reveal any info on disconnected users? */
+	if (Conf_MorePrivacy)
+		return CONNECTED;
+
 	/* Wrong number of parameters? */
 	if (Req->argc > 3)
 		return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
@@ -1204,11 +1386,11 @@ IRC_WHOWAS( CLIENT *Client, REQUEST *Req )
 	if (last < 0)
 		last = 0;
 
-	max = DEFAULT_WHOWAS;
+	max = DEF_RPL_WHOWAS;
 	if (Req->argc > 1) {
 		max = atoi(Req->argv[1]);
 		if (max < 1)
-			max = MAX_WHOWAS;
+			max = MAX_RPL_WHOWAS;
 	}
 
 	/*
@@ -1247,38 +1429,55 @@ IRC_WHOWAS( CLIENT *Client, REQUEST *Req )
 } /* IRC_WHOWAS */
 
 
+/**
+ * Send LUSERS reply to a client.
+ *
+ * @param Client The receipient of the information.
+ * @return CONNECTED or DISCONNECTED.
+ */
 GLOBAL bool
-IRC_Send_LUSERS( CLIENT *Client )
+IRC_Send_LUSERS(CLIENT *Client)
 {
 	unsigned long cnt;
 #ifndef STRICT_RFC
 	unsigned long max;
 #endif
 
-	assert( Client != NULL );
+	assert(Client != NULL);
 
 	/* Users, services and serevers in the network */
-	if( ! IRC_WriteStrClient( Client, RPL_LUSERCLIENT_MSG, Client_ID( Client ), Client_UserCount( ), Client_ServiceCount( ), Client_ServerCount( ))) return DISCONNECTED;
+	if (!IRC_WriteStrClient(Client, RPL_LUSERCLIENT_MSG, Client_ID(Client),
+				Client_UserCount(), Client_ServiceCount(),
+				Client_ServerCount()))
+		return DISCONNECTED;
 
 	/* Number of IRC operators */
 	cnt = Client_OperCount( );
-	if( cnt > 0 )
-	{
-		if( ! IRC_WriteStrClient( Client, RPL_LUSEROP_MSG, Client_ID( Client ), cnt )) return DISCONNECTED;
+	if (cnt > 0) {
+		if (!IRC_WriteStrClient(Client, RPL_LUSEROP_MSG,
+					Client_ID(Client), cnt))
+			return DISCONNECTED;
 	}
 
 	/* Unknown connections */
 	cnt = Client_UnknownCount( );
-	if( cnt > 0 )
-	{
-		if( ! IRC_WriteStrClient( Client, RPL_LUSERUNKNOWN_MSG, Client_ID( Client ), cnt )) return DISCONNECTED;
+	if (cnt > 0) {
+		if (!IRC_WriteStrClient(Client, RPL_LUSERUNKNOWN_MSG,
+					Client_ID(Client), cnt))
+			return DISCONNECTED;
 	}
 
 	/* Number of created channels */
-	if( ! IRC_WriteStrClient( Client, RPL_LUSERCHANNELS_MSG, Client_ID( Client ), Channel_Count( ))) return DISCONNECTED;
+	if (!IRC_WriteStrClient(Client, RPL_LUSERCHANNELS_MSG,
+				Client_ID(Client),
+				Channel_CountVisible(Client)))
+		return DISCONNECTED;
 
 	/* Number of local users, services and servers */
-	if( ! IRC_WriteStrClient( Client, RPL_LUSERME_MSG, Client_ID( Client ), Client_MyUserCount( ), Client_MyServiceCount( ), Client_MyServerCount( ))) return DISCONNECTED;
+	if (!IRC_WriteStrClient(Client, RPL_LUSERME_MSG, Client_ID(Client),
+				Client_MyUserCount(), Client_MyServiceCount(),
+				Client_MyServerCount()))
+		return DISCONNECTED;
 
 #ifndef STRICT_RFC
 	/* Maximum number of local users */
@@ -1298,7 +1497,7 @@ IRC_Send_LUSERS( CLIENT *Client )
 			Conn_CountMax(), Conn_CountAccepted()))
 		return DISCONNECTED;
 #endif
-	
+
 	return CONNECTED;
 } /* IRC_Send_LUSERS */
 
@@ -1319,7 +1518,15 @@ Show_MOTD_Sendline(CLIENT *Client, const char *msg)
 static bool
 Show_MOTD_End(CLIENT *Client)
 {
-	return IRC_WriteStrClient( Client, RPL_ENDOFMOTD_MSG, Client_ID( Client ));
+	if (!IRC_WriteStrClient(Client, RPL_ENDOFMOTD_MSG, Client_ID(Client)))
+		return DISCONNECTED;
+
+	if (*Conf_CloakHost)
+		return IRC_WriteStrClient(Client, RPL_HOSTHIDDEN_MSG,
+					  Client_ID(Client),
+					  Client_Hostname(Client));
+
+	return CONNECTED;
 }
 
 #ifdef SSL_SUPPORT
@@ -1375,56 +1582,70 @@ IRC_Show_MOTD( CLIENT *Client )
 } /* IRC_Show_MOTD */
 
 
+/**
+ * Send NAMES reply for a specific client and channel.
+ *
+ * @param Client The client requesting the NAMES information.
+ * @param Chan The channel
+ * @return CONNECTED or DISCONNECTED.
+ */
 GLOBAL bool
-IRC_Send_NAMES( CLIENT *Client, CHANNEL *Chan )
+IRC_Send_NAMES(CLIENT * Client, CHANNEL * Chan)
 {
 	bool is_visible, is_member;
 	char str[LINE_LEN + 1];
 	CL2CHAN *cl2chan;
 	CLIENT *cl;
 
-	assert( Client != NULL );
-	assert( Chan != NULL );
+	assert(Client != NULL);
+	assert(Chan != NULL);
+
+	if (Channel_IsMemberOf(Chan, Client))
+		is_member = true;
+	else
+		is_member = false;
 
-	if( Channel_IsMemberOf( Chan, Client )) is_member = true;
-	else is_member = false;
+	/* Do not print info on channel memberships to anyone that is not member? */
+	if (Conf_MorePrivacy && !is_member)
+		return CONNECTED;
 
 	/* Secret channel? */
-	if( ! is_member && strchr( Channel_Modes( Chan ), 's' )) return CONNECTED;
+	if (!is_member && strchr(Channel_Modes(Chan), 's'))
+		return CONNECTED;
 
-	/* Alle Mitglieder suchen */
-	snprintf( str, sizeof( str ), RPL_NAMREPLY_MSG, Client_ID( Client ), "=", Channel_Name( Chan ));
-	cl2chan = Channel_FirstMember( Chan );
-	while( cl2chan )
-	{
-		cl = Channel_GetClient( cl2chan );
+	snprintf(str, sizeof(str), RPL_NAMREPLY_MSG, Client_ID(Client), "=",
+		 Channel_Name(Chan));
+	cl2chan = Channel_FirstMember(Chan);
+	while (cl2chan) {
+		cl = Channel_GetClient(cl2chan);
 
-		if( strchr( Client_Modes( cl ), 'i' )) is_visible = false;
-		else is_visible = true;
+		if (strchr(Client_Modes(cl), 'i'))
+			is_visible = false;
+		else
+			is_visible = true;
 
-		if( is_member || is_visible )
-		{
-			/* Nick anhaengen */
-			if( str[strlen( str ) - 1] != ':' ) strlcat( str, " ", sizeof( str ));
-			if( strchr( Channel_UserModes( Chan, cl ), 'o' )) strlcat( str, "@", sizeof( str ));
-			else if( strchr( Channel_UserModes( Chan, cl ), 'v' )) strlcat( str, "+", sizeof( str ));
-			strlcat( str, Client_ID( cl ), sizeof( str ));
+		if (is_member || is_visible) {
+			if (str[strlen(str) - 1] != ':')
+				strlcat(str, " ", sizeof(str));
 
-			if( strlen( str ) > ( LINE_LEN - CLIENT_NICK_LEN - 4 ))
-			{
-				/* Zeile wird zu lang: senden! */
-				if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
-				snprintf( str, sizeof( str ), RPL_NAMREPLY_MSG, Client_ID( Client ), "=", Channel_Name( Chan ));
+			who_flags_qualifier(Client, Channel_UserModes(Chan, cl),
+					    str, sizeof(str));
+			strlcat(str, Client_ID(cl), sizeof(str));
+
+			if (strlen(str) > (LINE_LEN - CLIENT_NICK_LEN - 4)) {
+				if (!IRC_WriteStrClient(Client, "%s", str))
+					return DISCONNECTED;
+				snprintf(str, sizeof(str), RPL_NAMREPLY_MSG,
+					 Client_ID(Client), "=",
+					 Channel_Name(Chan));
 			}
 		}
 
-		/* naechstes Mitglied suchen */
-		cl2chan = Channel_NextMember( Chan, cl2chan );
+		cl2chan = Channel_NextMember(Chan, cl2chan);
 	}
-	if( str[strlen( str ) - 1] != ':')
-	{
-		/* Es sind noch Daten da, die gesendet werden muessen */
-		if( ! IRC_WriteStrClient( Client, "%s", str )) return DISCONNECTED;
+	if (str[strlen(str) - 1] != ':') {
+		if (!IRC_WriteStrClient(Client, "%s", str))
+			return DISCONNECTED;
 	}
 
 	return CONNECTED;
@@ -1445,7 +1666,8 @@ IRC_Send_ISUPPORT(CLIENT * Client)
 	return IRC_WriteStrClient(Client, RPL_ISUPPORT2_MSG, Client_ID(Client),
 				  CHANNEL_NAME_LEN - 1, Conf_MaxNickLength - 1,
 				  COMMAND_LEN - 23, CLIENT_AWAY_LEN - 1,
-				  COMMAND_LEN - 113);
+				  COMMAND_LEN - 113, MAX_HNDL_MODES_ARG,
+				  MAX_HNDL_CHANNEL_LISTS);
 } /* IRC_Send_ISUPPORT */