Netsplit printing fixes.

Print multiple identical mode changes in one line
(mode +o nick by nick1, nick2, nick3)


git-svn-id: http://svn.irssi.org/repos/irssi/trunk@906 dbcabf3a-b0e7-0310-adc4-f8d773084564

src/fe-common/irc/fe-modes.c

@@ -0,0 +1,228 @@
+/*
+ fe-modes.c : irssi
+
+    Copyright (C) 2000 Timo Sirainen
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include "module.h"
+#include "module-formats.h"
+#include "signals.h"
+#include "levels.h"
+#include "misc.h"
+#include "settings.h"
+
+#include "irc.h"
+#include "irc-servers.h"
+#include "irc-channels.h"
+#include "modes.h"
+#include "ignore.h"
+
+#include "printtext.h"
+
+#define MODE_WAIT_TIME 3 /* how many seconds to wait for identical modes */
+
+typedef struct {
+	IRC_CHANNEL_REC *channel;
+	char *mode;
+	GSList *nicks;
+	time_t last_mode;
+} MODE_REC;
+
+static int mode_tag, group_multi_mode;
+static GSList *modes;
+
+static MODE_REC *mode_find_channel(IRC_CHANNEL_REC *channel)
+{
+	GSList *tmp;
+
+	g_return_val_if_fail(channel != NULL, NULL);
+
+	for (tmp = modes; tmp != NULL; tmp = tmp->next) {
+		MODE_REC *rec = tmp->data;
+
+		if (rec->channel == channel)
+                        return rec;
+	}
+
+	return NULL;
+}
+
+static void mode_destroy(MODE_REC *mode)
+{
+	g_return_if_fail(mode != NULL);
+
+	modes = g_slist_remove(modes, mode);
+	g_slist_foreach(mode->nicks, (GFunc) g_free, NULL);
+	g_slist_free(mode->nicks);
+	g_free(mode->mode);
+	g_free(mode);
+}
+
+static void print_mode(MODE_REC *rec)
+{
+	GSList *tmp;
+	char *nicks;
+
+	if (g_slist_find(channels, rec->channel) == NULL) {
+		/* channel was destroyed while we were waiting.. */
+		return;
+	}
+
+	tmp = modes; modes = NULL;
+
+	nicks = gslist_to_string(rec->nicks, ", ");
+	printformat(rec->channel->server, rec->channel->name, MSGLEVEL_MODES,
+		    IRCTXT_CHANMODE_CHANGE,
+		    rec->channel->name, rec->mode, nicks);
+	g_free(nicks);
+
+	modes = tmp;
+}
+
+/* something is going to be printed to screen, print our current netsplit
+   message before it. */
+static void sig_print_starting(void)
+{
+	while (modes != NULL) {
+		print_mode(modes->data);
+                mode_destroy(modes->data);
+	}
+}
+
+static int sig_check_modes(void)
+{
+	GSList *tmp, *next;
+
+	if (modes == NULL)
+		return 1;
+
+	for (tmp = modes; tmp != NULL; tmp = next) {
+		MODE_REC *rec = tmp->data;
+
+		next = tmp->next;
+		if (time(NULL)-rec->last_mode >= MODE_WAIT_TIME) {
+			print_mode(rec);
+			mode_destroy(rec);
+		}
+	}
+
+	if (modes == NULL)
+		signal_remove("print starting", (SIGNAL_FUNC) sig_print_starting);
+	return 1;
+}
+
+static void msg_multi_mode(IRC_CHANNEL_REC *channel, const char *sender,
+			   const char *addr, const char *mode)
+{
+	MODE_REC *rec;
+
+	if (modes == NULL)
+		signal_add("print starting", (SIGNAL_FUNC) sig_print_starting);
+
+	rec = mode_find_channel(channel);
+	if (rec != NULL && strcmp(rec->mode, mode) != 0) {
+		/* different mode than last time, show and remove the old */
+		print_mode(rec);
+		mode_destroy(rec);
+		rec = NULL;
+	}
+
+	if (rec == NULL) {
+                /* no previous mode, create new */
+		rec = g_new0(MODE_REC, 1);
+		modes = g_slist_append(modes, rec);
+
+		rec->channel = channel;
+		rec->mode = g_strdup(mode);
+	}
+
+	rec->nicks = g_slist_append(rec->nicks, g_strdup(sender));
+	rec->last_mode = time(NULL);
+
+	signal_stop();
+}
+
+/* FIXME: should be moved to fe-common/core/fe-messages.c.. */
+static void sig_message_mode(IRC_SERVER_REC *server, const char *channel,
+			     const char *nick, const char *addr,
+			     const char *mode)
+{
+	if (nick == NULL) nick = server->real_address;
+
+	if (ignore_check(SERVER(server), nick, addr, channel,
+			 mode, MSGLEVEL_MODES))
+		return;
+
+	if (!ischannel(*channel)) {
+		/* user mode change */
+		printformat(server, NULL, MSGLEVEL_MODES,
+			    IRCTXT_USERMODE_CHANGE, mode, channel);
+	} else if (addr == NULL) {
+		/* channel mode changed by server */
+		printformat(server, channel, MSGLEVEL_MODES,
+			    IRCTXT_SERVER_CHANMODE_CHANGE,
+			    channel, mode, nick);
+	} else {
+		/* channel mode changed by normal user */
+		IRC_CHANNEL_REC *chanrec;
+
+		chanrec = !group_multi_mode ? NULL :
+			irc_channel_find(server, channel);
+
+		if (chanrec != NULL)
+			msg_multi_mode(chanrec, nick, addr, mode);
+		else {
+			printformat(server, channel, MSGLEVEL_MODES,
+				    IRCTXT_CHANMODE_CHANGE,
+				    channel, mode, nick);
+		}
+	}
+}
+
+static void read_settings(void)
+{
+	int old_group;
+
+        old_group = group_multi_mode;
+	group_multi_mode = settings_get_bool("group_multi_mode");
+
+	if (old_group && !group_multi_mode) {
+		g_source_remove(mode_tag);
+		mode_tag = -1;
+	} else if (!old_group && group_multi_mode) {
+		mode_tag = g_timeout_add(1000, (GSourceFunc) sig_check_modes, NULL);
+	}
+}
+
+void fe_modes_init(void)
+{
+	settings_add_bool("misc", "group_multi_mode", TRUE);
+        mode_tag = -1;
+
+	read_settings();
+	signal_add("message mode", (SIGNAL_FUNC) sig_message_mode);
+	signal_add("setup changed", (SIGNAL_FUNC) read_settings);
+}
+
+void fe_modes_deinit(void)
+{
+	if (mode_tag != -1)
+		g_source_remove(mode_tag);
+
+	signal_remove("message mode", (SIGNAL_FUNC) sig_message_mode);
+	signal_remove("setup changed", (SIGNAL_FUNC) read_settings);
+}