From 217283caeaf5fc19e671a56547610ceb42e2ea7b Mon Sep 17 00:00:00 2001
From: Timo Sirainen <cras@irssi.org>
Date: Tue, 20 Jan 2004 10:57:57 +0000
Subject: isupport patch by David Leadbeater

git-svn-id: http://svn.irssi.org/repos/irssi/trunk@3211 dbcabf3a-b0e7-0310-adc4-f8d773084564
---
 src/core/channels.c                   |   4 +-
 src/core/chat-commands.c              |   3 +-
 src/core/nick-rec.h                   |   1 +
 src/core/nicklist.c                   |   9 +-
 src/core/server-rec.h                 |   4 +-
 src/core/session.c                    |   5 +
 src/fe-common/core/fe-channels.c      |   4 +-
 src/fe-common/core/fe-messages.c      |   7 ++
 src/fe-common/irc/fe-events-numeric.c |   2 +
 src/fe-common/irc/fe-netjoin.c        |   2 +-
 src/irc/core/irc-commands.c           |  43 +++++---
 src/irc/core/irc-expandos.c           |  11 +-
 src/irc/core/irc-nicklist.c           |  54 ++++++++--
 src/irc/core/irc-nicklist.h           |   7 ++
 src/irc/core/irc-queries.c            |  15 +++
 src/irc/core/irc-queries.h            |   3 +-
 src/irc/core/irc-servers.c            | 147 +++++++++++++++++++++++++-
 src/irc/core/irc-servers.h            |   8 ++
 src/irc/core/irc-session.c            |  41 ++++++++
 src/irc/core/irc.h                    |   5 +-
 src/irc/core/modes.c                  | 192 +++++++++++++++++++++-------------
 src/irc/core/modes.h                  |  41 ++++++--
 src/irc/core/netsplit.c               |   1 +
 src/irc/core/netsplit.h               |   1 +
 src/irc/proxy/dump.c                  |  22 +++-
 src/perl/common/Server.xs             |   4 +-
 src/perl/irc/Irc.xs                   |   1 +
 src/perl/irc/Modes.xs                 |   5 +-
 src/perl/irc/Server.xs                |  10 ++
 src/perl/perl-common.c                |   1 +
 30 files changed, 520 insertions(+), 133 deletions(-)

diff --git a/src/core/channels.c b/src/core/channels.c
index 9a92b896..08142f8b 100644
--- a/src/core/channels.c
+++ b/src/core/channels.c
@@ -219,7 +219,7 @@ static void event_connected(SERVER_REC *server)
 
 static int match_nick_flags(SERVER_REC *server, NICK_REC *nick, char flag)
 {
-	const char *flags = server->get_nick_flags();
+	const char *flags = server->get_nick_flags(server);
 
 	return strchr(flags, flag) == NULL ||
 		(flag == flags[0] && nick->op) ||
@@ -259,7 +259,7 @@ void channel_send_autocommands(CHANNEL_REC *channel)
                         continue;
 
 		nick = nicklist_find_mask(channel,
-					  channel->server->isnickflag(*botnick) ?
+					  channel->server->isnickflag(channel->server, *botnick) ?
 					  botnick+1 : botnick);
 		if (nick != NULL &&
 		    match_nick_flags(channel->server, nick, *botnick)) {
diff --git a/src/core/chat-commands.c b/src/core/chat-commands.c
index e991f6fc..f3197520 100644
--- a/src/core/chat-commands.c
+++ b/src/core/chat-commands.c
@@ -345,7 +345,7 @@ static void cmd_msg(const char *data, SERVER_REC *server, WI_ITEM_REC *item)
 	GHashTable *optlist;
 	char *target, *origtarget, *msg;
 	void *free_arg;
-	int free_ret, target_type;
+	int free_ret, target_type = SEND_TARGET_NICK;
 
 	g_return_if_fail(data != NULL);
 
@@ -398,7 +398,6 @@ static void cmd_msg(const char *data, SERVER_REC *server, WI_ITEM_REC *item)
 
 	if (target != NULL)
 		server->send_message(server, target, msg, target_type);
-
 	signal_emit(target != NULL && target_type == SEND_TARGET_CHANNEL ?
 		    "message own_public" : "message own_private", 4,
 		    server, msg, target, origtarget);
diff --git a/src/core/nick-rec.h b/src/core/nick-rec.h
index d0dbce3d..8e641222 100644
--- a/src/core/nick-rec.h
+++ b/src/core/nick-rec.h
@@ -19,6 +19,7 @@ unsigned int send_massjoin:1; /* Waiting to be sent in massjoin signal */
 unsigned int op:1;
 unsigned int halfop:1;
 unsigned int voice:1;
+unsigned int other:7;
 
 /*GHashTable *module_data;*/
 
diff --git a/src/core/nicklist.c b/src/core/nicklist.c
index 7b97cb8e..3d557987 100644
--- a/src/core/nicklist.c
+++ b/src/core/nicklist.c
@@ -369,7 +369,10 @@ int nicklist_compare(NICK_REC *p1, NICK_REC *p2)
 	 * returns :-)
 	 * -- yath */
 
-	if (p1->op)
+	/* Treat others as highest - should really use order in 005 numeric */
+	if (p1->other)
+		status1 = 5;
+	else if (p1->op)
 		status1 = 4;
 	else if (p1->halfop)
 		status1 = 3;
@@ -378,7 +381,9 @@ int nicklist_compare(NICK_REC *p1, NICK_REC *p2)
 	else
 		status1 = 1;
 
-	if (p2->op)
+	if (p2->other)
+		status2 = 5;
+	else if (p2->op)
 		status2 = 4;
 	else if (p2->halfop)
 		status2 = 3;
diff --git a/src/core/server-rec.h b/src/core/server-rec.h
index 0003f698..bc8124dc 100644
--- a/src/core/server-rec.h
+++ b/src/core/server-rec.h
@@ -53,12 +53,12 @@ GSList *queries;
    channel keys etc. */
 void (*channels_join)(SERVER_REC *server, const char *data, int automatic);
 /* returns true if `flag' indicates a nick flag (op/voice/halfop) */
-int (*isnickflag)(char flag);
+int (*isnickflag)(SERVER_REC *server, char flag);
 /* returns true if `data' indicates a channel */
 int (*ischannel)(SERVER_REC *server, const char *data);
 /* returns all nick flag characters in order op, voice, halfop. If some
    of them aren't supported '\0' can be used. */
-const char *(*get_nick_flags)(void);
+const char *(*get_nick_flags)(SERVER_REC *server);
 /* send public or private message to server */
 void (*send_message)(SERVER_REC *server, const char *target,
 		     const char *msg, int target_type);
diff --git a/src/core/session.c b/src/core/session.c
index ec589d70..2355df78 100644
--- a/src/core/session.c
+++ b/src/core/session.c
@@ -118,12 +118,17 @@ static void cmd_upgrade(const char *data)
 static void session_save_nick(CHANNEL_REC *channel, NICK_REC *nick,
 			      CONFIG_REC *config, CONFIG_NODE *node)
 {
+	static char other[2];
 	node = config_node_section(node, NULL, NODE_TYPE_BLOCK);
 
 	config_node_set_str(config, node, "nick", nick->nick);
 	config_node_set_bool(config, node, "op", nick->op);
 	config_node_set_bool(config, node, "halfop", nick->halfop);
 	config_node_set_bool(config, node, "voice", nick->voice);
+	
+	other[0] = nick->other;
+	other[1] = '\0';
+	config_node_set_str(config, node, "other", other);
 
 	signal_emit("session save nick", 4, channel, nick, config, node);
 }
diff --git a/src/fe-common/core/fe-channels.c b/src/fe-common/core/fe-channels.c
index 4ce5abeb..63d262fb 100644
--- a/src/fe-common/core/fe-channels.c
+++ b/src/fe-common/core/fe-channels.c
@@ -399,7 +399,9 @@ static void display_sorted_nicks(CHANNEL_REC *channel, GSList *nicklist)
 	for (tmp = nicklist; tmp != NULL; tmp = tmp->next) {
 		NICK_REC *rec = tmp->data;
 
-		if (rec->op)
+		if (rec->other)
+			nickmode[0] = rec->other;
+		else if (rec->op)
 			nickmode[0] = '@';
 		else if (rec->halfop)
 			nickmode[0] = '%';
diff --git a/src/fe-common/core/fe-messages.c b/src/fe-common/core/fe-messages.c
index 2ae6c0e1..f0015f20 100644
--- a/src/fe-common/core/fe-messages.c
+++ b/src/fe-common/core/fe-messages.c
@@ -116,12 +116,19 @@ char *expand_emphasis(WI_ITEM_REC *item, const char *text)
 static char *channel_get_nickmode_rec(NICK_REC *nickrec)
 {
         char *emptystr;
+	static char nickmode[2]; /* FIXME: bad */
 
 	if (!settings_get_bool("show_nickmode"))
                 return "";
 
         emptystr = settings_get_bool("show_nickmode_empty") ? " " : "";
 
+	if (nickrec != NULL && nickrec->other) {
+		nickmode[0] = nickrec->other;
+		nickmode[1] = '\0';
+		return nickmode;
+	}
+
 	return nickrec == NULL ? emptystr :
 		nickrec->op ? "@" :
 		nickrec->halfop ? "%" :
diff --git a/src/fe-common/irc/fe-events-numeric.c b/src/fe-common/irc/fe-events-numeric.c
index 242866e6..67f84d2a 100644
--- a/src/fe-common/irc/fe-events-numeric.c
+++ b/src/fe-common/irc/fe-events-numeric.c
@@ -945,6 +945,7 @@ void fe_events_numeric_init(void)
         signal_add("default event numeric", (SIGNAL_FUNC) event_numeric);
 	signal_add("event 001", (SIGNAL_FUNC) event_received);
 	signal_add("event 004", (SIGNAL_FUNC) event_received);
+	signal_add("event 005", (SIGNAL_FUNC) event_received);
 	signal_add("event 254", (SIGNAL_FUNC) event_received);
 	signal_add("event 364", (SIGNAL_FUNC) event_received);
 	signal_add("event 365", (SIGNAL_FUNC) event_received);
@@ -1033,6 +1034,7 @@ void fe_events_numeric_deinit(void)
         signal_remove("default event numeric", (SIGNAL_FUNC) event_numeric);
 	signal_remove("event 001", (SIGNAL_FUNC) event_received);
 	signal_remove("event 004", (SIGNAL_FUNC) event_received);
+	signal_remove("event 005", (SIGNAL_FUNC) event_received);
 	signal_remove("event 254", (SIGNAL_FUNC) event_received);
 	signal_remove("event 364", (SIGNAL_FUNC) event_received);
 	signal_remove("event 365", (SIGNAL_FUNC) event_received);
diff --git a/src/fe-common/irc/fe-netjoin.c b/src/fe-common/irc/fe-netjoin.c
index ec1b745d..2629d462 100644
--- a/src/fe-common/irc/fe-netjoin.c
+++ b/src/fe-common/irc/fe-netjoin.c
@@ -387,7 +387,7 @@ static void msg_mode(IRC_SERVER_REC *server, const char *channel,
 				show = TRUE;
                         nick++;
 		} else {
-			if (HAS_MODE_ARG(type, *mode) && *nick != NULL)
+			if (HAS_MODE_ARG(server, type, *mode) && *nick != NULL)
 				nick++;
 			show = TRUE;
 		}
diff --git a/src/irc/core/irc-commands.c b/src/irc/core/irc-commands.c
index 9ac6ca66..f760d234 100644
--- a/src/irc/core/irc-commands.c
+++ b/src/irc/core/irc-commands.c
@@ -623,28 +623,39 @@ static void cmd_wall(const char *data, IRC_SERVER_REC *server, WI_ITEM_REC *item
 	chanrec = irc_channel_find(server, channame);
 	if (chanrec == NULL) cmd_param_error(CMDERR_CHAN_NOT_FOUND);
 
-	/* send notice to all ops */
-	nicks = NULL;
-	g_hash_table_foreach(chanrec->nicks, (GHFunc) cmd_wall_hash, &nicks);
-
-	args = g_strconcat(chanrec->name, " ", msg, NULL);
-	msg = parse_special_string(settings_get_str("wall_format"),
-				   SERVER(server), item, args, NULL, 0);
-	g_free(args);
-
-	for (tmp = nicks; tmp != NULL; tmp = tmp->next) {
-		NICK_REC *rec = tmp->data;
-
-		if (rec != chanrec->ownnick)
-			irc_send_cmdv(server, "NOTICE %s :%s", rec->nick, msg);
+	/* See if the server has advertised support of wallchops */
+	if (g_hash_table_lookup(chanrec->server->isupport, "statusmsg") ||
+	    g_hash_table_lookup(chanrec->server->isupport, "wallchops"))
+		irc_send_cmdv(server, "NOTICE @%s :%s", chanrec->name, msg);
+	else {
+		/* Fall back to manually noticing each op */
+		nicks = NULL;
+		g_hash_table_foreach(chanrec->nicks,
+				     (GHFunc) cmd_wall_hash, &nicks);
+
+		args = g_strconcat(chanrec->name, " ", msg, NULL);
+		msg = parse_special_string(settings_get_str("wall_format"),
+					   SERVER(server), item, args, NULL, 0);
+		g_free(args);
+
+		for (tmp = nicks; tmp != NULL; tmp = tmp->next) {
+			NICK_REC *rec = tmp->data;
+
+			if (rec != chanrec->ownnick) {
+				irc_send_cmdv(server, "NOTICE %s :%s",
+					      rec->nick, msg);
+			}
+		}
+		g_free(msg);
+		g_slist_free(nicks);
 	}
-	g_free(msg);
-	g_slist_free(nicks);
 
 	cmd_params_free(free_arg);
 }
 
 /* SYNTAX: WALLCHOPS <channel> <message> */
+/* ircu is the only major server i can see which supports this 
+   and it supports NOTICE @#channel anyway */
 static void cmd_wallchops(const char *data, IRC_SERVER_REC *server, WI_ITEM_REC *item)
 {
 	char *channame, *msg;
diff --git a/src/irc/core/irc-expandos.c b/src/irc/core/irc-expandos.c
index 6acfed73..589b0620 100644
--- a/src/irc/core/irc-expandos.c
+++ b/src/irc/core/irc-expandos.c
@@ -82,10 +82,19 @@ static char *expando_usermode(SERVER_REC *server, void *item, int *free_ret)
 	return IS_IRC_SERVER(server) ? IRC_SERVER(server)->usermode : "";
 }
 
-/* expands to your usermode on channel, op '@', halfop '%', "+" voice */
+/* expands to your usermode on channel, op '@', halfop '%', "+" voice or other */
 static char *expando_cumode(SERVER_REC *server, void *item, int *free_ret)
 {
 	if (IS_IRC_CHANNEL(item) && CHANNEL(item)->ownnick) {
+		char other = NICK(CHANNEL(item)->ownnick)->other;
+		if (other != '\0') {
+			char *cumode = g_malloc(2);
+			cumode[0] = other;
+			cumode[1] = '\0';
+			*free_ret = TRUE;
+			return cumode;
+		}
+
 		return NICK(CHANNEL(item)->ownnick)->op ? "@" :
 		       NICK(CHANNEL(item)->ownnick)->halfop ? "%" :
 		       NICK(CHANNEL(item)->ownnick)->voice ? "+" : "";
diff --git a/src/irc/core/irc-nicklist.c b/src/irc/core/irc-nicklist.c
index eb3aaeca..e5d25d5c 100644
--- a/src/irc/core/irc-nicklist.c
+++ b/src/irc/core/irc-nicklist.c
@@ -74,11 +74,32 @@ char *irc_nick_strip(const char *nick)
 	return stripped;
 }
 
+int irc_nickcmp_rfc1459(const char *m, const char *n)
+{
+	while (*m != '\0' && *n != '\0') {
+		if (to_rfc1459(*m) != to_rfc1459(*n))
+			return -1;
+		m++; n++;
+	}
+	return *m == *n ? 0 : 1;
+}
+
+int irc_nickcmp_ascii(const char *m, const char *n)
+{
+	while (*m != '\0' && *n != '\0') {
+		if (to_ascii(*m) != to_ascii(*n))
+			return -1;
+		m++; n++;
+	}
+	return *m == *n ? 0 : 1;
+}
+
 static void event_names_list(IRC_SERVER_REC *server, const char *data)
 {
 	IRC_CHANNEL_REC *chanrec;
+	NICK_REC *rec;
 	char *params, *type, *channel, *names, *ptr;
-        int op, halfop, voice;
+        int op, halfop, voice, other;
 
 	g_return_if_fail(data != NULL);
 
@@ -117,8 +138,8 @@ static void event_names_list(IRC_SERVER_REC *server, const char *data)
 		   showing "@+nick" and since none of these chars are valid
 		   nick chars, just check them until a non-nickflag char is
 		   found. FIXME: we just ignore owner char now. */
-		op = halfop = voice = FALSE;
-		while (isnickflag(*ptr)) {
+		op = halfop = voice = other = FALSE;
+		while (isnickflag(server, *ptr)) {
 			switch (*ptr) {
 			case '@':
                                 op = TRUE;
@@ -129,13 +150,17 @@ static void event_names_list(IRC_SERVER_REC *server, const char *data)
 			case '+':
                                 voice = TRUE;
                                 break;
+			default:
+				other = *ptr;
 			}
                         ptr++;
 		}
 
 		if (nicklist_find((CHANNEL_REC *) chanrec, ptr) == NULL) {
-			irc_nicklist_insert(chanrec, ptr, op, halfop,
-					    voice, FALSE);
+			rec = irc_nicklist_insert(chanrec, ptr, op, halfop,
+						  voice, FALSE);
+			if (other)
+				rec->other = other;
 		}
 	}
 
@@ -376,17 +401,24 @@ static void sig_usermode(SERVER_REC *server)
 	nicklist_update_flags(server, server->nick, server->usermode_away, -1);
 }
 
-static const char *get_nick_flags(void)
+static const char *get_nick_flags(SERVER_REC *server)
 {
-        return "@+%";
+	IRC_SERVER_REC *irc_server = (IRC_SERVER_REC *) server;
+	static char *std = "@%+";
+	char *prefix = g_hash_table_lookup(irc_server->isupport, "prefix");
+
+	if (prefix == NULL)
+		return std;
+	prefix = strchr(prefix, ')');
+	if (prefix != NULL || *++prefix == '\0') /* FIXME: ugly to modify it */
+		return std;
+	return prefix;
 }
 
 static void sig_connected(IRC_SERVER_REC *server)
 {
-	if (IS_IRC_SERVER(server)) {
-		server->get_nick_flags =
-			(const char *(*)(void)) get_nick_flags;
-	}
+	if (IS_IRC_SERVER(server))
+		server->get_nick_flags = get_nick_flags;
 }
 
 void irc_nicklist_init(void)
diff --git a/src/irc/core/irc-nicklist.h b/src/irc/core/irc-nicklist.h
index 0b392c77..f2813ea1 100644
--- a/src/irc/core/irc-nicklist.h
+++ b/src/irc/core/irc-nicklist.h
@@ -10,7 +10,14 @@ NICK_REC *irc_nicklist_insert(IRC_CHANNEL_REC *channel, const char *nick,
 /* Remove all "extra" characters from `nick'. Like _nick_ -> nick */
 char *irc_nick_strip(const char *nick);
 
+int irc_nickcmp_rfc1459(const char *, const char *);
+int irc_nickcmp_ascii(const char *, const char *);
+
 void irc_nicklist_init(void);
 void irc_nicklist_deinit(void);
 
+/* FIXME: to_rfc1459() is missing things */
+#define to_rfc1459(x) ((x) >= 65 && (x) <= 94 ? (x) + 32 : (x))
+#define to_ascii(x) ((x) >= 65 && (x) <= 94 ? (x) + 32 : (x))
+
 #endif
diff --git a/src/irc/core/irc-queries.c b/src/irc/core/irc-queries.c
index 0ca1b94e..a2a545f5 100644
--- a/src/irc/core/irc-queries.c
+++ b/src/irc/core/irc-queries.c
@@ -22,6 +22,7 @@
 #include "signals.h"
 #include "misc.h"
 
+#include "irc-nicklist.h"
 #include "irc-servers.h"
 #include "irc-queries.h"
 
@@ -40,6 +41,20 @@ QUERY_REC *irc_query_create(const char *server_tag,
 	return rec;
 }
 
+QUERY_REC *irc_query_find(IRC_SERVER_REC *server, const char *nick)
+{
+	GSList *tmp;
+
+	for (tmp = server->queries; tmp != NULL; tmp = tmp->next) {
+		QUERY_REC *rec = tmp->data;
+
+		if (server->nick_comp_func(rec->name, nick) == 0)
+			return rec;
+	}
+
+	return NULL;
+}
+
 static void check_query_changes(IRC_SERVER_REC *server, const char *nick,
 				const char *address, const char *target)
 {
diff --git a/src/irc/core/irc-queries.h b/src/irc/core/irc-queries.h
index e95602c1..0a3cc7a5 100644
--- a/src/irc/core/irc-queries.h
+++ b/src/irc/core/irc-queries.h
@@ -14,8 +14,7 @@
 void irc_queries_init(void);
 void irc_queries_deinit(void);
 
-#define irc_query_find(server, name) \
-	query_find(SERVER(server), name)
+QUERY_REC *irc_query_find(IRC_SERVER_REC *server, const char *nick);
 
 QUERY_REC *irc_query_create(const char *server_tag,
 			    const char *nick, int automatic);
diff --git a/src/irc/core/irc-servers.c b/src/irc/core/irc-servers.c
index c6d16b62..6e139c9b 100644
--- a/src/irc/core/irc-servers.c
+++ b/src/irc/core/irc-servers.c
@@ -30,6 +30,8 @@
 #include "channels.h"
 #include "queries.h"
 
+#include "irc-nicklist.h"
+#include "irc-queries.h"
 #include "irc-servers-setup.h"
 #include "irc-servers.h"
 #include "channel-rejoin.h"
@@ -55,9 +57,11 @@ void irc_servers_reconnect_deinit(void);
 
 static int cmd_tag;
 
-static int isnickflag_func(char flag)
+static int isnickflag_func(SERVER_REC *server, char flag)
 {
-	return isnickflag(flag);
+	IRC_SERVER_REC *irc_server = (IRC_SERVER_REC *) server;
+
+	return isnickflag(irc_server, flag);
 }
 
 static int ischannel_func(SERVER_REC *server, const char *data)
@@ -157,6 +161,9 @@ static void server_init(IRC_SERVER_REC *server)
 			      conn->address, conn->port);
 	}
 
+	server->isupport = g_hash_table_new((GHashFunc) g_istr_hash,
+					  (GCompareFunc) g_istr_equal);
+
 	server->cmdcount = 0;
 }
 
@@ -198,6 +205,8 @@ SERVER_REC *irc_server_init_connect(SERVER_CONNECT_REC *conn)
 		ircconn->max_msgs : DEFAULT_MAX_MSGS;
 	server->connrec->use_ssl = conn->use_ssl;
 
+	modes_server_init(server);
+
         server_connect_init((SERVER_REC *) server);
 	return (SERVER_REC *) server;
 }
@@ -268,6 +277,9 @@ static void sig_connected(IRC_SERVER_REC *server)
 	server->isnickflag = isnickflag_func;
 	server->ischannel = ischannel_func;
 	server->send_message = send_message;
+	server->query_find_func =
+		(QUERY_REC *(*)(SERVER_REC *, const char *)) irc_query_find;
+	server->nick_comp_func = irc_nickcmp_ascii;
 
 	server->splits = g_hash_table_new((GHashFunc) g_istr_hash,
 					  (GCompareFunc) g_istr_equal);
@@ -276,6 +288,12 @@ static void sig_connected(IRC_SERVER_REC *server)
 		server_init(server);
 }
 
+static void isupport_destroy_hash(void *key, void *value)
+{
+	g_free(key);
+	g_free(value);
+}
+
 static void sig_disconnected(IRC_SERVER_REC *server)
 {
 	GSList *tmp;
@@ -291,6 +309,10 @@ static void sig_disconnected(IRC_SERVER_REC *server)
 	g_slist_free(server->cmdqueue);
         server->cmdqueue = NULL;
 
+	g_hash_table_foreach(server->isupport, (GHFunc) isupport_destroy_hash, server);
+	g_hash_table_destroy(server->isupport);
+	server->isupport = NULL;
+
 	g_free_and_null(server->wanted_usermode);
 	g_free_and_null(server->real_address);
 	g_free_and_null(server->usermode);
@@ -452,7 +474,7 @@ static int sig_set_user_mode(IRC_SERVER_REC *server)
 
 	mode = server->connrec->usermode;
 	newmode = server->usermode == NULL ? NULL :
-		modes_join(server->usermode, mode, FALSE);
+		modes_join(NULL, server->usermode, mode, FALSE);
 
 	if (newmode == NULL || strcmp(newmode, server->usermode) != 0) {
 		/* change the user mode. we used to do some trickery to
@@ -521,6 +543,123 @@ static void event_server_info(IRC_SERVER_REC *server, const char *data)
 	g_free(params);
 }
 
+static void parse_chanmodes(IRC_SERVER_REC *server, const char *sptr)
+{
+	mode_func_t *modefuncs[] = {
+		modes_type_a,
+		modes_type_b,
+		modes_type_c,
+		modes_type_d
+	};
+	char **item, **chanmodes;
+	int i;
+
+	chanmodes = g_strsplit(sptr, ",", 5); /* ignore extras */
+
+	for (i = 0, item = chanmodes; *item != NULL && i < 4; item++, i++) {
+		unsigned char *p = *item;
+		while (*p != '\0') {
+			server->modes[(int)*p].func = modefuncs[i];
+			p++;
+		}
+	}
+
+	g_strfreev(chanmodes);
+}
+
+static void parse_prefix(IRC_SERVER_REC *server, const char *sptr)
+{
+	const char *eptr;
+
+	if (*sptr++ != '(')
+		return; /* Unknown prefix format */
+
+	eptr = strchr(sptr, ')');
+	if (eptr == NULL)
+		return;
+
+	eptr++;
+	while (*sptr != '\0' && *eptr != '\0' && *sptr != ')' && *eptr != ' ') {
+		server->modes[(int)(unsigned char) *sptr].func =
+			modes_type_prefix;
+		server->modes[(int)(unsigned char) *sptr].prefix = *eptr;
+		server->prefix[(int)(unsigned char) *eptr] = *sptr;
+		sptr++; eptr++;
+	}
+}
+
+static void event_isupport(IRC_SERVER_REC *server, const char *data)
+{
+	char **item, *sptr, *eptr;
+	char **isupport;
+   
+	g_return_if_fail(server != NULL);
+
+	server->isupport_sent = TRUE;
+
+	sptr = strchr(data, ' ');
+	if (sptr == NULL)
+		return;
+	sptr++;
+
+	isupport = g_strsplit(sptr, " ", -1);
+
+	for(item = isupport; *item != NULL; item++) {
+		int removed = FALSE;
+		gpointer key = NULL, value = NULL;
+
+		if (**item == ':')
+			break;
+
+		sptr = strchr(*item, '=');
+		if (sptr != NULL) {
+			*sptr = '\0';
+			sptr++;
+		}
+
+		eptr = *item;
+		if(*eptr == '-') {
+			removed = TRUE;
+			eptr++;
+		}
+
+		if (!g_hash_table_lookup_extended(server->isupport, eptr,
+						  &key, &value) && removed)
+			continue;
+
+		if (removed)
+			g_hash_table_remove(server->isupport, eptr);
+		else {
+			g_hash_table_insert(server->isupport, g_strdup(eptr),
+					    g_strdup(sptr != NULL ? sptr : ""));
+		}
+
+		g_free(key);
+		g_free(value);
+	}
+	g_strfreev(isupport);
+
+	if ((sptr = g_hash_table_lookup(server->isupport, "CHANMODES")))
+		parse_chanmodes(server, sptr);
+
+	/* This is after chanmode because some servers define modes in both */
+	if ((sptr = g_hash_table_lookup(server->isupport, "PREFIX")))
+		parse_prefix(server, sptr);
+
+	if ((sptr = g_hash_table_lookup(server->isupport, "MODES"))) {
+		server->max_modes_in_cmd = atoi(sptr);
+		if (server->max_modes_in_cmd < 1)
+			server->max_modes_in_cmd = DEFAULT_MAX_MODES;
+	}
+
+	if ((sptr = g_hash_table_lookup(server->isupport, "CASEMAPPING"))) {
+		if (strstr(sptr, "rfc1459") != NULL)
+			server->nick_comp_func = irc_nickcmp_rfc1459;
+		else
+			server->nick_comp_func = irc_nickcmp_ascii;
+	}
+}
+
 static void event_motd(IRC_SERVER_REC *server, const char *data, const char *from)
 {
 	if (server->connected)
@@ -599,6 +738,7 @@ void irc_servers_init(void)
 	signal_add_last("server quit", (SIGNAL_FUNC) sig_server_quit);
 	signal_add("event 001", (SIGNAL_FUNC) event_connected);
 	signal_add("event 004", (SIGNAL_FUNC) event_server_info);
+	signal_add("event 005", (SIGNAL_FUNC) event_isupport);
 	signal_add("event 375", (SIGNAL_FUNC) event_motd);
 	signal_add_last("event 376", (SIGNAL_FUNC) event_end_of_motd);
 	signal_add_last("event 422", (SIGNAL_FUNC) event_end_of_motd); /* no motd */
@@ -623,6 +763,7 @@ void irc_servers_deinit(void)
         signal_remove("server quit", (SIGNAL_FUNC) sig_server_quit);
 	signal_remove("event 001", (SIGNAL_FUNC) event_connected);
 	signal_remove("event 004", (SIGNAL_FUNC) event_server_info);
+	signal_remove("event 005", (SIGNAL_FUNC) event_isupport);
 	signal_remove("event 375", (SIGNAL_FUNC) event_motd);
 	signal_remove("event 376", (SIGNAL_FUNC) event_end_of_motd);
 	signal_remove("event 422", (SIGNAL_FUNC) event_end_of_motd); /* no motd */
diff --git a/src/irc/core/irc-servers.h b/src/irc/core/irc-servers.h
index 1286a15e..c1d1d9f0 100644
--- a/src/irc/core/irc-servers.h
+++ b/src/irc/core/irc-servers.h
@@ -3,6 +3,7 @@
 
 #include "chat-protocols.h"
 #include "servers.h"
+#include "modes.h"
 
 /* returns IRC_SERVER_REC if it's IRC server, NULL if it isn't */
 #define IRC_SERVER(server) \
@@ -61,6 +62,7 @@ struct _IRC_SERVER_REC {
 	unsigned int disable_lag:1; /* Disable lag detection (PING command doesn't exist) */
 	unsigned int nick_collision:1; /* We're just now being killed because of nick collision */
 	unsigned int motd_got:1; /* We've received MOTD */
+	unsigned int isupport_sent:1; /* Server has sent us an isupport reply */
 
 	int max_kicks_in_cmd; /* max. number of people to kick with one /KICK command */
 	int max_modes_in_cmd; /* max. number of mode changes in one /MODE command */
@@ -96,6 +98,12 @@ struct _IRC_SERVER_REC {
 	                            channels go here if they're "temporarily unavailable"
 				    because of netsplits */
 	void *chanqueries;
+
+	GHashTable *isupport;
+	struct modes_type modes[256]; /* Stores the modes sent by a server in an isupport reply */
+	char prefix[256];
+
+	int (*nick_comp_func)(const char *, const char *); /* Function for comparing nicknames on this server */
 };
 
 SERVER_REC *irc_server_init_connect(SERVER_CONNECT_REC *conn);
diff --git a/src/irc/core/irc-session.c b/src/irc/core/irc-session.c
index 3992171d..797e084e 100644
--- a/src/irc/core/irc-session.c
+++ b/src/irc/core/irc-session.c
@@ -22,15 +22,25 @@
 #include "signals.h"
 #include "net-sendbuffer.h"
 #include "lib-config/iconfig.h"
+#include "misc.h"
 
 #include "irc-servers.h"
 #include "irc-channels.h"
 #include "irc-nicklist.h"
 
+struct _isupport_data { CONFIG_REC *config; CONFIG_NODE *node; };
+
+static void session_isupport_foreach(char *key, char *value, struct _isupport_data *data)
+{
+        config_node_set_str(data->config, data->node, key, value);
+}
+
 static void sig_session_save_server(IRC_SERVER_REC *server, CONFIG_REC *config,
 				    CONFIG_NODE *node)
 {
         GSList *tmp;
+	CONFIG_NODE *isupport;
+	struct _isupport_data isupport_data;
 
 	if (!IS_IRC_SERVER(server))
 		return;
@@ -54,11 +64,19 @@ static void sig_session_save_server(IRC_SERVER_REC *server, CONFIG_REC *config,
 	config_node_set_bool(config, node, "usermode_away", server->usermode_away);
 	config_node_set_str(config, node, "away_reason", server->away_reason);
 	config_node_set_bool(config, node, "emode_known", server->emode_known);
+
+        isupport = config_node_section(node, "isupport", NODE_TYPE_BLOCK);
+        isupport_data.config = config;
+        isupport_data.node = isupport;
+		        
+        g_hash_table_foreach(server->isupport, (GHFunc) session_isupport_foreach, &isupport_data);
 }
 
 static void sig_session_restore_server(IRC_SERVER_REC *server,
 				       CONFIG_NODE *node)
 {
+	GSList *tmp;
+
 	if (!IS_IRC_SERVER(server))
 		return;
 
@@ -69,12 +87,33 @@ static void sig_session_restore_server(IRC_SERVER_REC *server,
 	server->usermode_away = config_node_get_bool(node, "usermode_away", FALSE);
 	server->away_reason = g_strdup(config_node_get_str(node, "away_reason", NULL));
 	server->emode_known = config_node_get_bool(node, "emode_known", FALSE);
+
+	if (server->isupport == NULL) {
+		server->isupport = g_hash_table_new((GHashFunc) g_istr_hash,
+						    (GCompareFunc) g_istr_equal);
+	}
+
+	node = config_node_section(node, "isupport", -1);
+	tmp = config_node_first(node->value);
+	if(tmp != NULL)
+		server->isupport_sent = TRUE;
+
+	for (; tmp != NULL; tmp = config_node_next(tmp)) {
+		node = tmp->data;
+		if (node == NULL)
+			break;
+
+		g_hash_table_insert(server->isupport, g_strdup(node->key),
+				    g_strdup(node->value));
+	}
+
 }
 
 static void sig_session_restore_nick(IRC_CHANNEL_REC *channel,
 				     CONFIG_NODE *node)
 {
 	const char *nick;
+	char *other;
         int op, halfop, voice;
         NICK_REC *nickrec;
 
@@ -89,6 +128,8 @@ static void sig_session_restore_nick(IRC_CHANNEL_REC *channel,
         voice = config_node_get_bool(node, "voice", FALSE);
         halfop = config_node_get_bool(node, "halfop", FALSE);
 	nickrec = irc_nicklist_insert(channel, nick, op, halfop, voice, FALSE);
+	other = config_node_get_str(node, "other", FALSE);
+	nickrec->other = other[0];
 }
 
 static void session_restore_channel(IRC_CHANNEL_REC *channel)
diff --git a/src/irc/core/irc.h b/src/irc/core/irc.h
index 77d7dc98..5197f42d 100644
--- a/src/irc/core/irc.h
+++ b/src/irc/core/irc.h
@@ -19,9 +19,8 @@ typedef struct _REDIRECT_REC REDIRECT_REC;
 	((a) == '^' || (a) == '~' || \
 	(a) == '+' || (a) == '=' || (a) == '-')
 
-#define isnickflag(a) \
-	((a) == '@' || (a) == '+' || (a) == '%' || /* op / voice */ \
-	(a) == '%' || (a) == '.' || (a) == '!') /* extensions: half-op / owners */
+#define isnickflag(server, a) \
+	(server->prefix[(int)(unsigned char) a] != '\0')
 
 #define ischannel(a) \
 	((a) == '#' || /* normal */ \
diff --git a/src/irc/core/modes.c b/src/irc/core/modes.c
index ec41889b..159d375c 100644
--- a/src/irc/core/modes.c
+++ b/src/irc/core/modes.c
@@ -32,7 +32,7 @@
 
 /* Change nick's mode in channel */
 static void nick_mode_change(IRC_CHANNEL_REC *channel, const char *nick,
-			     const char mode, int type, const char *setby)
+			     char mode, int type, const char *setby)
 {
 	NICK_REC *nickrec;
 	char modestr[2], typestr[2];
@@ -44,8 +44,10 @@ static void nick_mode_change(IRC_CHANNEL_REC *channel, const char *nick,
 	if (nickrec == NULL) return; /* No /names list got yet */
 
 	if (mode == '@') nickrec->op = type == '+';
-	if (mode == '+') nickrec->voice = type == '+';
-	if (mode == '%') nickrec->halfop = type == '+';
+	else if (mode == '+') nickrec->voice = type == '+';
+	else if (mode == '%') nickrec->halfop = type == '+';
+	else if (channel->server->prefix[(unsigned char) mode] != '\0')
+		nickrec->other = (type == '+' ? mode : '\0');
 
 	modestr[0] = mode; modestr[1] = '\0';
 	typestr[0] = type; typestr[1] = '\0';
@@ -97,13 +99,15 @@ static void mode_add_arg(GString *str, int pos, int updating, const char *arg)
 }
 
 /* Add mode character to list sorted alphabetically */
-static void mode_add_sorted(GString *str, char mode, const char *arg)
+static void mode_add_sorted(IRC_SERVER_REC *server, GString *str,
+			    char mode, const char *arg, int user)
 {
 	char *p;
 	int updating, argpos = 0;
 
 	/* check that mode isn't already set */
-	if (!HAS_MODE_ARG_SET(mode) && mode_is_set(str->str, mode))
+	if ((!user && !HAS_MODE_ARG_SET(server, mode)) &&
+	    mode_is_set(str->str, mode))
 		return;
 
 	updating = FALSE;
@@ -114,7 +118,7 @@ static void mode_add_sorted(GString *str, char mode, const char *arg)
                         updating = TRUE;
 			break;
 		}
-		if (HAS_MODE_ARG_SET(*p))
+		if (!user && HAS_MODE_ARG_SET(server, *p))
 			argpos++;
 	}
 
@@ -154,7 +158,7 @@ static void node_remove_arg(GString *str, int pos)
 }
 
 /* remove mode (and it's argument) from string */
-static void mode_remove(GString *str, char mode)
+static void mode_remove(IRC_SERVER_REC *server, GString *str, char mode, int user)
 {
 	char *p;
 	int argpos = 0;
@@ -162,34 +166,91 @@ static void mode_remove(GString *str, char mode)
 	for (p = str->str; *p != '\0' && *p != ' '; p++) {
 		if (mode == *p) {
 			g_string_erase(str, (int) (p-str->str), 1);
-			if (HAS_MODE_ARG_SET(mode))
+			if (!user && HAS_MODE_ARG_SET(server, mode))
                                 node_remove_arg(str, argpos);
 			break;
 		}
-		if (HAS_MODE_ARG_SET(*p))
+		if (!user && HAS_MODE_ARG_SET(server, *p))
 			argpos++;
 	}
 }
 
-static void mode_set(GString *str, char type, char mode)
+static void mode_set(IRC_SERVER_REC *server, GString *str,
+		     char type, char mode, int user)
 {
 	g_return_if_fail(str != NULL);
 
 	if (type == '-')
-		mode_remove(str, mode);
+		mode_remove(server, str, mode, user);
         else
-		mode_add_sorted(str, mode, NULL);
+		mode_add_sorted(server, str, mode, NULL, user);
 }
 
-static void mode_set_arg(GString *str, char type, char mode, const char *arg)
+static void mode_set_arg(IRC_SERVER_REC *server, GString *str,
+			 char type, char mode, const char *arg)
 {
 	g_return_if_fail(str != NULL);
 	g_return_if_fail(type == '-' || arg != NULL);
 
 	if (type == '-')
-		mode_remove(str, mode);
+		mode_remove(server, str, mode, TRUE);
         else
-		mode_add_sorted(str, mode, arg);
+		mode_add_sorted(server, str, mode, arg, TRUE);
+}
+
+/* Mode that needs a parameter of a mask for both setting and removing (eg: bans) */
+void modes_type_a(IRC_CHANNEL_REC *channel, const char *setby, char type,
+		  char mode, char *arg, GString *newmode)
+{
+	/* Currently only +b is dealt with */
+	if (mode == 'b') {
+		if (type == '+')
+			banlist_add(channel, arg, setby, time(NULL));
+		else
+			banlist_remove(channel, arg);
+	}
+}
+
+/* Mode that needs parameter for both setting and removing (eg: +k) */
+void modes_type_b(IRC_CHANNEL_REC *channel, const char *setby, char type,
+	char mode, char *arg, GString *newmode)
+{
+	if (mode == 'k') {
+		if (*arg == '\0' && type == '+')
+			arg = channel->key != NULL ? channel->key : "???";
+		mode_set_arg(channel->server, newmode, type, 'k', arg);
+
+		if (arg != channel->key) {
+			g_free_and_null(channel->key);
+			if (type == '+')
+				channel->key = g_strdup(arg);
+		}
+	}
+}
+
+/* Mode that needs parameter only for adding */
+void modes_type_c(IRC_CHANNEL_REC *channel, const char *setby,
+		  char type, char mode, char *arg, GString *newmode)
+{
+	if (mode == 'l') {
+		mode_set_arg(channel->server, newmode, type, 'l', arg);
+		channel->limit = type == '-' ? 0 : atoi(arg);
+	}
+}
+
+/* Mode that takes no parameter */
+void modes_type_d(IRC_CHANNEL_REC *channel, const char *setby,
+		  char type, char mode, char *arg, GString *newmode)
+{
+	mode_set(channel->server, newmode, type, mode, FALSE);
+}
+
+void modes_type_prefix(IRC_CHANNEL_REC *channel, const char *setby,
+		       char type, char mode, char *arg, GString *newmode)
+{
+	int umode = (unsigned char) mode;
+	nick_mode_change(channel, arg, channel->server->modes[umode].prefix,
+			 type, setby);
 }
 
 int channel_mode_is_set(IRC_CHANNEL_REC *channel, char mode)
@@ -204,8 +265,10 @@ int channel_mode_is_set(IRC_CHANNEL_REC *channel, char mode)
 void parse_channel_modes(IRC_CHANNEL_REC *channel, const char *setby,
 			 const char *mode, int update_key)
 {
+	IRC_SERVER_REC *server = channel->server;
         GString *newmode;
 	char *dup, *modestr, *arg, *curmode, type;
+	int umode;
 
 	g_return_if_fail(IS_IRC_CHANNEL(channel));
 	g_return_if_fail(mode != NULL);
@@ -216,7 +279,7 @@ void parse_channel_modes(IRC_CHANNEL_REC *channel, const char *setby,
 	dup = modestr = g_strdup(mode);
 	curmode = cmd_get_param(&modestr);
 	while (*curmode != '\0') {
-		if (HAS_MODE_ARG(type, *curmode)) {
+		if (HAS_MODE_ARG(server, type, *curmode)) {
 			/* get the argument for the mode. NOTE: We don't
 			   get the +k's argument when joining to channel. */
 			arg = cmd_get_param(&modestr);
@@ -229,54 +292,17 @@ void parse_channel_modes(IRC_CHANNEL_REC *channel, const char *setby,
 		case '-':
 			type = *curmode;
 			break;
-
-		case 'b':
-			if (type == '+')
-				banlist_add(channel, arg, setby, time(NULL));
-			else
-				banlist_remove(channel, arg);
-			break;
-		case 'o':
-		case 'O': /* channel owner in !channels */
-			if (g_strcasecmp(channel->server->nick, arg) == 0)
-				channel->chanop = type == '+';
-			nick_mode_change(channel, arg, '@', type, setby);
-			break;
-		case 'h':
-			nick_mode_change(channel, arg, '%', type, setby);
-			break;
-		case 'v':
-			nick_mode_change(channel, arg, '+', type, setby);
-			break;
-
-		case 'l':
-			mode_set_arg(newmode, type, 'l', arg);
-			channel->limit = type == '-' ? 0 : atoi(arg);
-			break;
-		case 'k':
-			if ((*arg == '\0' && type == '+') ||
-			    (channel->key != NULL && !update_key)) {
-				arg = channel->key != NULL ? channel->key :
-					"???";
-			}
-			mode_set_arg(newmode, type, 'k', arg);
-
-			if (arg != channel->key) {
-				g_free_and_null(channel->key);
-				if (type == '+')
-					channel->key = g_strdup(arg);
-			}
-			break;
-		case 'e':
-		case 'I':
-		case 'q':
-		case 'd':
-			/* Don't set it as channel mode */
-			break;
-
 		default:
-                        mode_set(newmode, type, *curmode);
-			break;
+			umode = (unsigned char) *curmode;
+			if (server->modes[umode].func != NULL) {
+				server->modes[umode].func(channel, setby,
+							  type, *curmode, arg,
+							  newmode);
+			} else {
+				/* Treat unknown modes as ones without params */
+				modes_type_d(channel, setby, type, *curmode,
+					     arg, newmode);
+			}
 		}
 
 		curmode++;
@@ -305,7 +331,8 @@ void parse_channel_modes(IRC_CHANNEL_REC *channel, const char *setby,
 /* add `mode' to `old' - return newly allocated mode.
    `channel' specifies if we're parsing channel mode and we should try
    to join mode arguments too. */
-char *modes_join(const char *old, const char *mode, int channel)
+char *modes_join(IRC_SERVER_REC *server, const char *old,
+		 const char *mode, int channel)
 {
 	GString *newmode;
 	char *dup, *modestr, *curmode, type;
@@ -324,10 +351,10 @@ char *modes_join(const char *old, const char *mode, int channel)
 			continue;
 		}
 
-		if (!channel || !HAS_MODE_ARG(type, *curmode))
-			mode_set(newmode, type, *curmode);
+		if (!channel || !HAS_MODE_ARG(server, type, *curmode))
+			mode_set(server, newmode, type, *curmode, !channel);
 		else {
-			mode_set_arg(newmode, type, *curmode,
+			mode_set_arg(server, newmode, type, *curmode,
 				     cmd_get_param(&modestr));
 		}
 
@@ -348,7 +375,7 @@ static void parse_user_mode(IRC_SERVER_REC *server, const char *modestr)
 	g_return_if_fail(IS_IRC_SERVER(server));
 	g_return_if_fail(modestr != NULL);
 
-	newmode = modes_join(server->usermode, modestr, FALSE);
+	newmode = modes_join(NULL, server->usermode, modestr, FALSE);
 	oldmode = server->usermode;
 	server->usermode = newmode;
 	server->server_operator = (strchr(newmode, 'o') != NULL);
@@ -430,7 +457,7 @@ static void sig_req_usermode_change(IRC_SERVER_REC *server, const char *data,
 				  &target, &mode);
 	if (!ischannel(*target)) {
                 /* we requested a user mode change, save this */
-		mode = modes_join(server->wanted_usermode, mode, FALSE);
+		mode = modes_join(NULL, server->wanted_usermode, mode, FALSE);
                 g_free_not_null(server->wanted_usermode);
 		server->wanted_usermode = mode;
 	}
@@ -520,7 +547,7 @@ void channel_set_mode(IRC_SERVER_REC *server, const char *channel,
 		}
 
 		if (count == server->max_modes_in_cmd &&
-		    HAS_MODE_ARG(type, *curmode)) {
+		    HAS_MODE_ARG(chanrec->server, type, *curmode)) {
 			irc_send_cmdv(server, "MODE %s %s%s",
 				      channel, tmode->str, targs->str);
 
@@ -535,7 +562,7 @@ void channel_set_mode(IRC_SERVER_REC *server, const char *channel,
 		}
 		g_string_append_c(tmode, *curmode);
 
-		if (HAS_MODE_ARG(type, *curmode)) {
+		if (HAS_MODE_ARG(chanrec->server, type, *curmode)) {
 			char *arg;
 
 			count++;
@@ -762,6 +789,29 @@ static void cmd_mode(const char *data, IRC_SERVER_REC *server,
 	cmd_params_free(free_arg);
 }
 
+void modes_server_init(IRC_SERVER_REC *server)
+{
+	server->modes['b'].func = modes_type_a;
+	server->modes['e'].func = modes_type_a;
+	server->modes['I'].func = modes_type_a;
+
+	server->modes['h'].func = modes_type_prefix;
+	server->modes['h'].prefix = '%';
+	server->modes['o'].func = modes_type_prefix;
+	server->modes['o'].prefix = '@';
+	server->modes['O'].func = modes_type_prefix;
+	server->modes['O'].prefix = '@';
+	server->modes['v'].func = modes_type_prefix;
+	server->modes['v'].prefix = '+';
+
+	server->prefix['%'] = 'h';
+	server->prefix['@'] = 'o';
+	server->prefix['+'] = 'v';
+
+	server->modes['l'].func = modes_type_b;
+	server->modes['k'].func = modes_type_c;
+}
+
 void modes_init(void)
 {
 	settings_add_str("misc", "opermode", "");
diff --git a/src/irc/core/modes.h b/src/irc/core/modes.h
index 485b176b..d5af8403 100644
--- a/src/irc/core/modes.h
+++ b/src/irc/core/modes.h
@@ -1,30 +1,43 @@
 #ifndef __MODES_H
 #define __MODES_H
 
+#include "irc-channels.h"
+
+typedef void mode_func_t(IRC_CHANNEL_REC *, const char *, char, char,
+			 char *, GString *);
+
+struct modes_type {
+	mode_func_t *func;
+	char prefix;
+};
+
 /* modes that have argument always */
-#define HAS_MODE_ARG_ALWAYS(mode) \
-	((mode) == 'b' || (mode) == 'e' || (mode) == 'I' || (mode) == 'q' || \
-        (mode) == 'd' || (mode) == 'o' || (mode) == 'h' || (mode) == 'v' || \
-        (mode) == 'O' || (mode) == 'k' || (mode) == 'f')
+#define HAS_MODE_ARG_ALWAYS(server, mode) \
+   (server->modes[(int)(unsigned char) mode].func == modes_type_a || \
+    server->modes[(int)(unsigned char) mode].func == modes_type_b || \
+    server->modes[(int)(unsigned char) mode].func == modes_type_prefix)
 
 /* modes that have argument when being set (+) */
-#define HAS_MODE_ARG_SET(mode) \
-	(HAS_MODE_ARG_ALWAYS(mode) || (mode) == 'l')
+#define HAS_MODE_ARG_SET(server, mode) \
+	(HAS_MODE_ARG_ALWAYS(server, mode) || \
+	  server->modes[(int)(unsigned char) mode].func == modes_type_c)
 
 /* modes that have argument when being unset (-) */
-#define HAS_MODE_ARG_UNSET(mode) \
-	HAS_MODE_ARG_ALWAYS(mode)
+#define HAS_MODE_ARG_UNSET(server, mode) \
+	HAS_MODE_ARG_ALWAYS(server, mode)
 
-#define HAS_MODE_ARG(type, mode) \
-	((type) == '+' ? HAS_MODE_ARG_SET(mode) : HAS_MODE_ARG_UNSET(mode))
+#define HAS_MODE_ARG(server, type, mode) \
+	((type) == '+' ? HAS_MODE_ARG_SET(server,mode) : \
+	  HAS_MODE_ARG_UNSET(server, mode))
 
 void modes_init(void);
 void modes_deinit(void);
+void modes_server_init(IRC_SERVER_REC *);
 
 /* add `mode' to `old' - return newly allocated mode.
    `channel' specifies if we're parsing channel mode and we should try
    to join mode arguments too. */
-char *modes_join(const char *old, const char *mode, int channel);
+char *modes_join(IRC_SERVER_REC *server, const char *old, const char *mode, int channel);
 
 int channel_mode_is_set(IRC_CHANNEL_REC *channel, char mode);
 
@@ -36,4 +49,10 @@ void channel_set_singlemode(IRC_CHANNEL_REC *channel, const char *nicks,
 void channel_set_mode(IRC_SERVER_REC *server, const char *channel,
 		      const char *mode);
 
+mode_func_t modes_type_a;
+mode_func_t modes_type_b;
+mode_func_t modes_type_c;
+mode_func_t modes_type_d;
+mode_func_t modes_type_prefix;
+
 #endif
diff --git a/src/irc/core/netsplit.c b/src/irc/core/netsplit.c
index 04eb3ff0..0e85b44c 100644
--- a/src/irc/core/netsplit.c
+++ b/src/irc/core/netsplit.c
@@ -135,6 +135,7 @@ static NETSPLIT_REC *netsplit_add(IRC_SERVER_REC *server, const char *nick,
 		splitchan->op = nickrec->op;
 		splitchan->halfop = nickrec->halfop;
 		splitchan->voice = nickrec->voice;
+		splitchan->other = nickrec->other;
 
 		rec->channels = g_slist_append(rec->channels, splitchan);
 	}
diff --git a/src/irc/core/netsplit.h b/src/irc/core/netsplit.h
index 9b28c9c6..23e6d636 100644
--- a/src/irc/core/netsplit.h
+++ b/src/irc/core/netsplit.h
@@ -28,6 +28,7 @@ typedef struct {
 	unsigned int op:1;
 	unsigned int halfop:1;
 	unsigned int voice:1;
+	unsigned int other:7;
 } NETSPLIT_CHAN_REC;
 
 void netsplit_init(void);
diff --git a/src/irc/proxy/dump.c b/src/irc/proxy/dump.c
index c693e953..a567409a 100644
--- a/src/irc/proxy/dump.c
+++ b/src/irc/proxy/dump.c
@@ -177,7 +177,9 @@ static void dump_join(IRC_CHANNEL_REC *channel, CLIENT_REC *client)
 		else
 			g_string_append_c(str, ' ');
 
-		if (nick->op)
+		if (nick->other)
+                        g_string_append_c(str, nick->other);
+		else if (nick->op)
                         g_string_append_c(str, '@');
 		else if (nick->halfop)
                         g_string_append_c(str, '%');
@@ -213,8 +215,15 @@ void proxy_client_reset_nick(CLIENT_REC *client)
 	client->nick = g_strdup(client->server->nick);
 }
 
+static void proxy_dump_data_005(char *key, char *value, GString *output)
+{
+	g_string_sprintfa(output, "%s=%s ", key, value);
+}
+
 void proxy_dump_data(CLIENT_REC *client)
 {
+	GString *isupport_out;
+
         proxy_client_reset_nick(client);
 
 	/* welcome info */
@@ -225,6 +234,17 @@ void proxy_dump_data(CLIENT_REC *client)
 		proxy_outdata(client, ":%s 004 %s %s %s oirw abiklmnopqstv\n", client->proxy_address, client->nick, client->proxy_address, IRSSI_VERSION);
 	else
 		proxy_outdata(client, ":%s 004 %s %s %s oirw abeIiklmnopqstv\n", client->proxy_address, client->nick, client->proxy_address, IRSSI_VERSION);
+
+	if (client->server->isupport_sent) {
+		isupport_out = g_string_new(NULL);
+		g_string_sprintf(isupport_out, ":%s 005 %s ", client->proxy_address, client->nick);
+		/* FIXME: should be limited to 15 params */
+		g_hash_table_foreach(client->server->isupport, proxy_dump_data_005, isupport_out);
+		g_string_sprintfa(isupport_out, ":are supported by this server\n");
+		proxy_outdata(client, "%s", isupport_out->str);
+		g_string_free(isupport_out, TRUE);
+	}
+
 	proxy_outdata(client, ":%s 251 %s :There are 0 users and 0 invisible on 1 servers\n", client->proxy_address, client->nick);
 	proxy_outdata(client, ":%s 255 %s :I have 0 clients, 0 services and 0 servers\n", client->proxy_address, client->nick);
 	proxy_outdata(client, ":%s 422 %s :MOTD File is missing\n", client->proxy_address, client->nick);
diff --git a/src/perl/common/Server.xs b/src/perl/common/Server.xs
index facf1da0..76ea7812 100644
--- a/src/perl/common/Server.xs
+++ b/src/perl/common/Server.xs
@@ -72,7 +72,7 @@ isnickflag(server, flag)
 	Irssi::Server server
 	char flag
 CODE:
-	RETVAL = server->isnickflag(flag);
+	RETVAL = server->isnickflag(server, flag);
 OUTPUT:
 	RETVAL
 
@@ -89,7 +89,7 @@ char *
 get_nick_flags(server)
 	Irssi::Server server
 CODE:
-	RETVAL = (char *) server->get_nick_flags();
+	RETVAL = (char *) server->get_nick_flags(server);
 OUTPUT:
 	RETVAL
 
diff --git a/src/perl/irc/Irc.xs b/src/perl/irc/Irc.xs
index 02ab2c6f..3ccce9aa 100644
--- a/src/perl/irc/Irc.xs
+++ b/src/perl/irc/Irc.xs
@@ -22,6 +22,7 @@ static void perl_irc_server_fill_hash(HV *hv, IRC_SERVER_REC *server)
 	hv_store(hv, "max_msgs_in_cmd", 15, newSViv(server->max_msgs_in_cmd), 0);
 	hv_store(hv, "max_modes_in_cmd", 16, newSViv(server->max_modes_in_cmd), 0);
 	hv_store(hv, "max_whois_in_cmd", 16, newSViv(server->max_whois_in_cmd), 0);
+	hv_store(hv, "isupport_sent", 13, newSViv(server->isupport_sent), 0);
 }
 
 static void perl_ban_fill_hash(HV *hv, BAN_REC *ban)
diff --git a/src/perl/irc/Modes.xs b/src/perl/irc/Modes.xs
index 411b07e8..8b880789 100644
--- a/src/perl/irc/Modes.xs
+++ b/src/perl/irc/Modes.xs
@@ -4,14 +4,15 @@ MODULE = Irssi::Irc::Modes	PACKAGE = Irssi::Irc
 PROTOTYPES: ENABLE
 
 void
-modes_join(old, mode, channel)
+modes_join(server, old, mode, channel)
+	Irssi::Irc::Server server
 	char *old
 	char *mode
         int channel
 PREINIT:
 	char *ret;
 PPCODE:
-	ret = modes_join(old, mode, channel);
+	ret = modes_join(server, old, mode, channel);
 	XPUSHs(sv_2mortal(new_pv(ret)));
 	g_free(ret);
 
diff --git a/src/perl/irc/Server.xs b/src/perl/irc/Server.xs
index bcab6f49..74f7a962 100644
--- a/src/perl/irc/Server.xs
+++ b/src/perl/irc/Server.xs
@@ -129,3 +129,13 @@ CODE:
 	RETVAL = (char *) server_redirect_peek_signal(server, event, args, &redirection);
 OUTPUT:
 	RETVAL
+
+char *
+server_isupport(server, name)
+	Irssi::Irc::Server server
+	char *name
+CODE:
+	RETVAL = (char *) g_hash_table_lookup(server->isupport, name);
+OUTPUT:
+	RETVAL
+
diff --git a/src/perl/perl-common.c b/src/perl/perl-common.c
index 4c0426ae..4ff3b64a 100644
--- a/src/perl/perl-common.c
+++ b/src/perl/perl-common.c
@@ -436,6 +436,7 @@ void perl_nick_fill_hash(HV *hv, NICK_REC *nick)
 	hv_store(hv, "op", 2, newSViv(nick->op), 0);
 	hv_store(hv, "halfop", 6, newSViv(nick->halfop), 0);
 	hv_store(hv, "voice", 5, newSViv(nick->voice), 0);
+	hv_store(hv, "other", 5, newSViv(nick->other), 0);
 
 	hv_store(hv, "last_check", 10, newSViv(nick->last_check), 0);
 	hv_store(hv, "send_massjoin", 13, newSViv(nick->send_massjoin), 0);
-- 
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