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/*
channels-query.c : irssi
Copyright (C) 1999-2000 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
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/*
How the thing works:
- After channel is joined and NAMES list is got, send "channel joined" signal
- "channel joined" : add channel to server->queries lists
loop:
- Wait for NAMES list from all channels before doing anything else..
- After got the last NAMES list, start sending the queries ..
- find the query to send, check where server->queries list isn't NULL
(mode, who, banlist, ban exceptions, invite list)
- if not found anything -> all channels are synced
- send "command #chan1,#chan2,#chan3,.." command to server
- wait for reply from server, then check if it was last query to be sent to
channel. If it was, send "channel sync" signal
- check if the reply was for last channel in the command list. If so,
goto loop
*/
#include "module.h"
#include "misc.h"
#include "signals.h"
#include "settings.h"
#include "modes.h"
#include "mode-lists.h"
#include "nicklist.h"
#include "irc-servers.h"
#include "irc-channels.h"
#include "servers-redirect.h"
enum {
CHANNEL_QUERY_MODE,
CHANNEL_QUERY_WHO,
CHANNEL_QUERY_BMODE,
CHANNEL_QUERIES
};
#define CHANNEL_IS_MODE_QUERY(a) ((a) != CHANNEL_QUERY_WHO)
typedef struct {
int current_query_type; /* query type that is currently being asked */
GSList *current_queries; /* All channels that are currently being queried */
GSList *queries[CHANNEL_QUERIES]; /* All queries that need to be asked from server */
} SERVER_QUERY_REC;
static void sig_connected(IRC_SERVER_REC *server)
{
SERVER_QUERY_REC *rec;
g_return_if_fail(server != NULL);
if (!IS_IRC_SERVER(server))
return;
rec = g_new0(SERVER_QUERY_REC, 1);
server->chanqueries = rec;
}
static void sig_disconnected(IRC_SERVER_REC *server)
{
SERVER_QUERY_REC *rec;
int n;
g_return_if_fail(server != NULL);
if (!IS_IRC_SERVER(server))
return;
rec = server->chanqueries;
g_return_if_fail(rec != NULL);
for (n = 0; n < CHANNEL_QUERIES; n++)
g_slist_free(rec->queries[n]);
g_slist_free(rec->current_queries);
g_free(rec);
server->chanqueries = NULL;
}
/* Add channel to query list */
static void query_add_channel(IRC_CHANNEL_REC *channel, int query_type)
{
SERVER_QUERY_REC *rec;
g_return_if_fail(channel != NULL);
rec = channel->server->chanqueries;
rec->queries[query_type] =
g_slist_append(rec->queries[query_type], channel);
}
static void query_check(IRC_SERVER_REC *server);
static void query_remove_all(IRC_CHANNEL_REC *channel)
{
SERVER_QUERY_REC *rec;
int n;
rec = channel->server->chanqueries;
/* remove channel from query lists */
for (n = 0; n < CHANNEL_QUERIES; n++)
rec->queries[n] = g_slist_remove(rec->queries[n], channel);
rec->current_queries = g_slist_remove(rec->current_queries, channel);
query_check(channel->server);
}
static void sig_channel_destroyed(IRC_CHANNEL_REC *channel)
{
g_return_if_fail(channel != NULL);
if (IS_IRC_CHANNEL(channel) && !channel->server->disconnected &&
!channel->synced)
query_remove_all(channel);
}
static int channels_have_all_names(IRC_SERVER_REC *server)
{
GSList *tmp;
for (tmp = server->channels; tmp != NULL; tmp = tmp->next) {
IRC_CHANNEL_REC *rec = tmp->data;
if (IS_IRC_CHANNEL(rec) && !rec->names_got)
return 0;
}
return 1;
}
static int query_find_next(SERVER_QUERY_REC *server)
{
int n;
for (n = 0; n < CHANNEL_QUERIES; n++) {
if (server->queries[n] != NULL)
return n;
}
return -1;
}
static void query_send(IRC_SERVER_REC *server, int query)
{
SERVER_QUERY_REC *rec;
IRC_CHANNEL_REC *chanrec;
GSList *chans;
char *cmd, *chanstr_commas, *chanstr;
int onlyone, count;
rec = server->chanqueries;
/* get the list of channels to query */
onlyone = (server->no_multi_who && query == CHANNEL_QUERY_WHO) ||
(server->no_multi_mode && CHANNEL_IS_MODE_QUERY(query));
if (onlyone) {
chans = rec->queries[query];
rec->queries[query] =
g_slist_remove_link(rec->queries[query], chans);
chanrec = chans->data;
chanstr_commas = g_strdup(chanrec->name);
chanstr = g_strdup(chanrec->name);
count = 1;
} else {
char *chanstr_spaces;
chans = rec->queries[query];
count = g_slist_length(chans);
if (count > server->max_query_chans) {
GSList *lastchan;
lastchan = g_slist_nth(rec->queries[query],
server->max_query_chans-1);
count = server->max_query_chans;
rec->queries[query] = lastchan->next;
lastchan->next = NULL;
} else {
rec->queries[query] = NULL;
}
chanstr_commas = gslistptr_to_string(chans, G_STRUCT_OFFSET(IRC_CHANNEL_REC, name), ",");
chanstr_spaces = gslistptr_to_string(chans, G_STRUCT_OFFSET(IRC_CHANNEL_REC, name), " ");
chanstr = g_strconcat(chanstr_commas, " ", chanstr_spaces, NULL);
g_free(chanstr_spaces);
}
rec->current_query_type = query;
rec->current_queries = chans;
switch (query) {
case CHANNEL_QUERY_MODE:
cmd = g_strdup_printf("MODE %s", chanstr_commas);
/* the stop-event is received once for each channel,
and we want to print 329 event (channel created). */
server_redirect_event(server, "mode channel", count,
chanstr, -1, "chanquery abort",
"event 324", "chanquery mode",
"event 329", "event 329",
"", "chanquery abort", NULL);
break;
case CHANNEL_QUERY_WHO:
cmd = g_strdup_printf("WHO %s", chanstr_commas);
server_redirect_event(server, "who",
server->one_endofwho ? 1 : count,
chanstr, -1,
"chanquery abort",
"event 315", "chanquery who end",
"event 352", "silent event who",
"", "chanquery abort", NULL);
break;
case CHANNEL_QUERY_BMODE:
cmd = g_strdup_printf("MODE %s b", chanstr_commas);
/* check all the multichannel problems with all
mode requests - if channels are joined manually
irssi could ask modes separately but afterwards
join the two b/e/I modes together */
server_redirect_event(server, "mode b", count, chanstr, -1,
"chanquery abort",
"event 367", "chanquery ban",
"event 368", "chanquery ban end",
"", "chanquery abort", NULL);
break;
default:
cmd = NULL;
}
irc_send_cmd(server, cmd);
g_free(chanstr);
g_free(chanstr_commas);
g_free(cmd);
}
static void query_check(IRC_SERVER_REC *server)
{
SERVER_QUERY_REC *rec;
int query;
g_return_if_fail(server != NULL);
rec = server->chanqueries;
if (rec->current_queries != NULL)
return; /* old queries haven't been answered yet */
if (server->max_query_chans > 1 && !server->no_multi_who && !server->no_multi_mode && !channels_have_all_names(server)) {
/* all channels haven't sent /NAMES list yet */
/* only do this if there would be a benefit in combining
* queries -- jilles */
return;
}
query = query_find_next(rec);
if (query == -1) {
/* no queries left */
return;
}
query_send(server, query);
}
/* if there's no more queries in queries in buffer, send the sync signal */
static void channel_checksync(IRC_CHANNEL_REC *channel)
{
SERVER_QUERY_REC *rec;
int n;
g_return_if_fail(channel != NULL);
if (channel->synced)
return; /* already synced */
rec = channel->server->chanqueries;
for (n = 0; n < CHANNEL_QUERIES; n++) {
if (g_slist_find(rec->queries[n], channel))
return;
}
channel->synced = TRUE;
signal_emit("channel sync", 1, channel);
}
/* Error occured when trying to execute query - abort and try again. */
static void query_current_error(IRC_SERVER_REC *server)
{
SERVER_QUERY_REC *rec;
GSList *tmp;
int query, abort_query;
rec = server->chanqueries;
/* fix the thing that went wrong - or if it was already fixed,
then all we can do is abort. */
abort_query = FALSE;
query = rec->current_query_type;
if (query == CHANNEL_QUERY_WHO) {
if (server->no_multi_who)
abort_query = TRUE;
else
server->no_multi_who = TRUE;
} else {
if (server->no_multi_mode)
abort_query = TRUE;
else
server->no_multi_mode = TRUE;
}
if (!abort_query) {
/* move all currently queried channels to main query lists */
for (tmp = rec->current_queries; tmp != NULL; tmp = tmp->next) {
rec->queries[query] =
g_slist_append(rec->queries[query], tmp->data);
}
} else {
/* check if failed channels are synced after this error */
g_slist_foreach(rec->current_queries,
(GFunc) channel_checksync, NULL);
}
g_slist_free(rec->current_queries);
rec->current_queries = NULL;
query_check(server);
}
static void sig_channel_joined(IRC_CHANNEL_REC *channel)
{
if (!IS_IRC_CHANNEL(channel))
return;
if (!settings_get_bool("channel_sync"))
return;
/* Add channel to query lists */
if (!channel->no_modes)
query_add_channel(channel, CHANNEL_QUERY_MODE);
if (g_hash_table_size(channel->nicks) <
settings_get_int("channel_max_who_sync"))
query_add_channel(channel, CHANNEL_QUERY_WHO);
if (!channel->no_modes)
query_add_channel(channel, CHANNEL_QUERY_BMODE);
query_check(channel->server);
}
static void channel_got_query(IRC_CHANNEL_REC *chanrec, int query_type)
{
SERVER_QUERY_REC *rec;
g_return_if_fail(chanrec != NULL);
rec = chanrec->server->chanqueries;
if (query_type != rec->current_query_type)
return; /* shouldn't happen */
/* got the query for channel.. */
rec->current_queries =
g_slist_remove(rec->current_queries, chanrec);
channel_checksync(chanrec);
/* check if we need to send another query.. */
query_check(chanrec->server);
}
static void event_channel_mode(IRC_SERVER_REC *server, const char *data,
const char *nick)
{
IRC_CHANNEL_REC *chanrec;
char *params, *channel, *mode;
g_return_if_fail(data != NULL);
params = event_get_params(data, 3 | PARAM_FLAG_GETREST,
NULL, &channel, &mode);
chanrec = irc_channel_find(server, channel);
if (chanrec != NULL) {
if (chanrec->key != NULL && strchr(mode, 'k') == NULL) {
/* we joined the channel with a key,
but it didn't have +k mode.. */
parse_channel_modes(chanrec, NULL, "-k", TRUE);
}
parse_channel_modes(chanrec, nick, mode, FALSE);
channel_got_query(chanrec, CHANNEL_QUERY_MODE);
}
g_free(params);
}
static void event_end_of_who(IRC_SERVER_REC *server, const char *data)
{
SERVER_QUERY_REC *rec;
GSList *tmp, *next;
char *params, *channel, **channels;
int failed, multiple;
g_return_if_fail(data != NULL);
params = event_get_params(data, 2, NULL, &channel);
multiple = strchr(channel, ',') != NULL;
channels = g_strsplit(channel, ",", -1);
failed = FALSE;
rec = server->chanqueries;
for (tmp = rec->current_queries; tmp != NULL; tmp = next) {
IRC_CHANNEL_REC *chanrec = tmp->data;
next = tmp->next;
if (strarray_find(channels, chanrec->name) == -1)
continue;
if (chanrec->ownnick->host == NULL && multiple &&
!server->one_endofwho) {
/* we should receive our own host for each channel.
However, some servers really are stupid enough
not to reply anything to /WHO requests.. */
failed = TRUE;
} else {
chanrec->wholist = TRUE;
signal_emit("channel wholist", 1, chanrec);
channel_got_query(chanrec, CHANNEL_QUERY_WHO);
}
}
g_strfreev(channels);
if (multiple)
server->one_endofwho = TRUE;
if (failed) {
/* server didn't understand multiple WHO replies,
send them again separately */
query_current_error(server);
}
g_free(params);
}
static void event_end_of_banlist(IRC_SERVER_REC *server, const char *data)
{
IRC_CHANNEL_REC *chanrec;
char *params, *channel;
g_return_if_fail(data != NULL);
params = event_get_params(data, 2, NULL, &channel);
chanrec = irc_channel_find(server, channel);
if (chanrec != NULL)
channel_got_query(chanrec, CHANNEL_QUERY_BMODE);
g_free(params);
}
void channels_query_init(void)
{
settings_add_bool("misc", "channel_sync", TRUE);
settings_add_int("misc", "channel_max_who_sync", 1000);
signal_add("server connected", (SIGNAL_FUNC) sig_connected);
signal_add("server disconnected", (SIGNAL_FUNC) sig_disconnected);
signal_add("channel joined", (SIGNAL_FUNC) sig_channel_joined);
signal_add("channel destroyed", (SIGNAL_FUNC) sig_channel_destroyed);
signal_add("chanquery mode", (SIGNAL_FUNC) event_channel_mode);
signal_add("chanquery who end", (SIGNAL_FUNC) event_end_of_who);
signal_add("chanquery ban end", (SIGNAL_FUNC) event_end_of_banlist);
signal_add("chanquery abort", (SIGNAL_FUNC) query_current_error);
}
void channels_query_deinit(void)
{
signal_remove("server connected", (SIGNAL_FUNC) sig_connected);
signal_remove("server disconnected", (SIGNAL_FUNC) sig_disconnected);
signal_remove("channel joined", (SIGNAL_FUNC) sig_channel_joined);
signal_remove("channel destroyed", (SIGNAL_FUNC) sig_channel_destroyed);
signal_remove("chanquery mode", (SIGNAL_FUNC) event_channel_mode);
signal_remove("chanquery who end", (SIGNAL_FUNC) event_end_of_who);
signal_remove("chanquery ban end", (SIGNAL_FUNC) event_end_of_banlist);
signal_remove("chanquery abort", (SIGNAL_FUNC) query_current_error);
}
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