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/*
irc-server.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
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "module.h"
#include "net-nonblock.h"
#include "net-sendbuffer.h"
#include "line-split.h"
#include "signals.h"
#include "rawlog.h"
#include "misc.h"
#include "channels.h"
#include "queries.h"
#include "irc.h"
#include "irc-servers-setup.h"
#include "irc-servers.h"
#include "channel-rejoin.h"
#include "server-idle.h"
#include "servers-reconnect.h"
#include "modes.h"
#include "settings.h"
#define DEFAULT_MAX_KICKS 1
#define DEFAULT_MAX_MODES 3
#define DEFAULT_MAX_WHOIS 4
#define DEFAULT_MAX_MSGS 1
#define DEFAULT_USER_MODE "+i"
#define DEFAULT_CMD_QUEUE_SPEED 2200
#define DEFAULT_CMDS_MAX_AT_ONCE 5
#define DEFAULT_MAX_QUERY_CHANS 10
void irc_servers_reconnect_init(void);
void irc_servers_reconnect_deinit(void);
static int cmd_tag;
static void sig_server_connect_free(IRC_SERVER_CONNECT_REC *conn)
{
if (!IS_IRC_SERVER_CONNECT(conn))
return;
g_free_not_null(conn->alternate_nick);
}
static int isnickflag_func(char flag)
{
return isnickflag(flag);
}
static int ischannel_func(char flag)
{
return ischannel(flag);
}
static void send_message(SERVER_REC *server, const char *target,
const char *msg)
{
IRC_SERVER_REC *ircserver;
char *str;
ircserver = IRC_SERVER(server);
g_return_if_fail(ircserver != NULL);
g_return_if_fail(target != NULL);
g_return_if_fail(msg != NULL);
str = g_strdup_printf("PRIVMSG %s :%s", target, msg);
irc_send_cmd_split(ircserver, str, 2, ircserver->max_msgs_in_cmd);
g_free(str);
}
static void sig_server_looking(IRC_SERVER_REC *server)
{
if (!IS_IRC_SERVER(server))
return;
server->isnickflag = isnickflag_func;
server->ischannel = ischannel_func;
server->send_message = send_message;
}
static void server_init(IRC_SERVER_REC *server)
{
IRC_SERVER_CONNECT_REC *conn;
char hostname[100], *address, *ptr;
g_return_if_fail(server != NULL);
conn = server->connrec;
if (conn->proxy_string != NULL)
irc_send_cmdv(server, conn->proxy_string, conn->address, conn->port);
if (conn->password != NULL && *conn->password != '\0') {
/* send password */
server->cmdcount = 0;
irc_send_cmdv(server, "PASS %s", conn->password);
}
/* send nick */
server->cmdcount = 0;
irc_send_cmdv(server, "NICK %s", conn->nick);
/* send user/realname */
server->cmdcount = 0;
if (gethostname(hostname, sizeof(hostname)) != 0 || *hostname == '\0')
strcpy(hostname, "xx");
address = server->connrec->address;
ptr = strrchr(address, ':');
if (ptr != NULL) {
/* IPv6 address .. doesn't work here, use the string after
the last : char */
address = ptr+1;
}
irc_send_cmdv(server, "USER %s %s %s :%s", conn->username, hostname,
address, conn->realname);
server->cmdcount = 0;
}
IRC_SERVER_REC *irc_server_connect(IRC_SERVER_CONNECT_REC *conn)
{
IRC_SERVER_REC *server;
g_return_val_if_fail(IS_IRC_SERVER_CONNECT(conn), NULL);
if (conn->address == NULL || *conn->address == '\0') return NULL;
if (conn->nick == NULL || *conn->nick == '\0') return NULL;
server = g_new0(IRC_SERVER_REC, 1);
server->chat_type = IRC_PROTOCOL;
server->connrec = conn;
if (server->connrec->port <= 0) server->connrec->port = 6667;
server->cmd_queue_speed = conn->cmd_queue_speed > 0 ?
conn->cmd_queue_speed : settings_get_int("cmd_queue_speed");
server->max_cmds_at_once = conn->max_cmds_at_once > 0 ?
conn->max_cmds_at_once : settings_get_int("cmds_max_at_once");
server->max_query_chans = conn->max_query_chans > 0 ?
conn->max_query_chans : DEFAULT_MAX_QUERY_CHANS;
server->max_kicks_in_cmd = conn->max_kicks > 0 ?
conn->max_kicks : DEFAULT_MAX_KICKS;
server->max_modes_in_cmd = conn->max_modes > 0 ?
conn->max_modes : DEFAULT_MAX_MODES;
server->max_whois_in_cmd = conn->max_whois > 0 ?
conn->max_whois : DEFAULT_MAX_WHOIS;
server->max_msgs_in_cmd = conn->max_msgs > 0 ?
conn->max_msgs : DEFAULT_MAX_MSGS;
if (!server_start_connect((SERVER_REC *) server)) {
server_connect_free(SERVER_CONNECT(conn));
g_free(server);
return NULL;
}
return server;
}
static void sig_server_connect(IRC_SERVER_REC **server,
IRC_SERVER_CONNECT_REC *conn)
{
g_return_if_fail(server != NULL);
if (!IS_IRC_SERVER_CONNECT(conn))
return;
*server = irc_server_connect(conn);
signal_stop();
}
static void sig_connected(IRC_SERVER_REC *server)
{
if (!IS_IRC_SERVER(server))
return;
server->splits = g_hash_table_new((GHashFunc) g_istr_hash, (GCompareFunc) g_istr_equal);
server_init(server);
}
static void sig_disconnected(IRC_SERVER_REC *server)
{
if (!IS_IRC_SERVER(server))
return;
g_slist_foreach(server->cmdqueue, (GFunc) g_free, NULL);
g_slist_free(server->cmdqueue);
g_free_not_null(server->real_address);
g_free_not_null(server->usermode);
g_free_not_null(server->userhost);
g_free_not_null(server->last_invite);
}
static void sig_server_quit(IRC_SERVER_REC *server, const char *msg)
{
char *str;
if (!IS_IRC_SERVER(server) || server->handle == NULL ||
server->buffer == NULL)
return;
str = g_strdup_printf("QUIT :%s", msg);
irc_send_cmd_now(server, str);
g_free(str);
}
static void server_cmd_timeout(IRC_SERVER_REC *server, GTimeVal *now)
{
long usecs;
char *cmd;
int len;
if (!IS_IRC_SERVER(server))
return;
if (server->cmdcount == 0 && server->cmdqueue == NULL)
return;
if (g_timeval_cmp(now, &server->wait_cmd) == -1)
return;
usecs = get_timeval_diff(now, &server->last_cmd);
if (usecs < server->cmd_queue_speed)
return;
server->cmdcount--;
if (server->cmdqueue == NULL) return;
/* send command */
cmd = server->cmdqueue->data;
len = strlen(cmd);
if (net_sendbuffer_send(server->handle, cmd, len) == -1) {
/* something bad happened */
g_warning("net_sendbuffer_send() failed: %s",
g_strerror(errno));
return;
}
server->wait_cmd.tv_sec = 0;
memcpy(&server->last_cmd, now, sizeof(GTimeVal));
/* add to rawlog without CR+LF */
cmd[len-2] = '\0';
rawlog_output(server->rawlog, cmd);
/* remove from queue */
g_free(cmd);
server->cmdqueue = g_slist_remove(server->cmdqueue, cmd);
}
/* check every now and then if there's data to be sent in command buffer */
static int servers_cmd_timeout(void)
{
GTimeVal now;
g_get_current_time(&now);
g_slist_foreach(servers, (GFunc) server_cmd_timeout, &now);
return 1;
}
/* Return a string of all channels (and keys, if any have them) in server,
like "#a,#b,#c,#d x,b_chan_key,x,x" or just "#e,#f,#g" */
char *irc_server_get_channels(IRC_SERVER_REC *server)
{
GSList *tmp;
GString *chans, *keys;
char *ret;
int use_keys;
g_return_val_if_fail(server != NULL, FALSE);
chans = g_string_new(NULL);
keys = g_string_new(NULL);
use_keys = FALSE;
/* get currently joined channels */
for (tmp = server->channels; tmp != NULL; tmp = tmp->next) {
CHANNEL_REC *channel = tmp->data;
g_string_sprintfa(chans, "%s,", channel->name);
g_string_sprintfa(keys, "%s,", channel->key == NULL ? "x" :
channel->key);
if (channel->key != NULL)
use_keys = TRUE;
}
/* get also the channels that are in rejoin list */
for (tmp = server->rejoin_channels; tmp != NULL; tmp = tmp->next) {
REJOIN_REC *rec = tmp->data;
g_string_sprintfa(chans, "%s,", rec->channel);
g_string_sprintfa(keys, "%s,", rec->key == NULL ? "x" :
rec->key);
if (rec->key != NULL) use_keys = TRUE;
}
if (chans->len > 0) {
g_string_truncate(chans, chans->len-1);
g_string_truncate(keys, keys->len-1);
if (use_keys) g_string_sprintfa(chans, " %s", keys->str);
}
ret = chans->str;
g_string_free(chans, FALSE);
g_string_free(keys, TRUE);
return ret;
}
static int sig_set_user_mode(IRC_SERVER_REC *server)
{
const char *mode;
char *newmode;
if (g_slist_find(servers, server) == NULL)
return 0; /* got disconnected */
mode = settings_get_str("usermode");
newmode = server->usermode == NULL ? NULL :
modes_join(server->usermode, mode, FALSE);
if (server->usermode == NULL || strcmp(newmode, server->usermode) != 0)
irc_send_cmdv(server, "MODE %s %s", server->nick, mode);
g_free_not_null(newmode);
return 0;
}
static void event_connected(IRC_SERVER_REC *server, const char *data, const char *from)
{
char *params, *nick;
const char *mode;
g_return_if_fail(server != NULL);
params = event_get_params(data, 1, &nick);
if (strcmp(server->nick, nick) != 0) {
/* nick changed unexpectedly .. connected via proxy, etc. */
g_free(server->nick);
server->nick = g_strdup(nick);
}
if (server->real_address == NULL) {
/* set the server address */
server->real_address = from == NULL ?
g_strdup(server->connrec->address) : /* shouldn't happen.. */
g_strdup(from);
}
/* last welcome message found - commands can be sent to server now. */
server->connected = 1;
server->real_connect_time = time(NULL);
if (!server->connrec->reconnection) {
/* wait a second and then send the user mode */
mode = settings_get_str("usermode");
if (*mode != '\0')
g_timeout_add(1000, (GSourceFunc) sig_set_user_mode, server);
}
signal_emit("event connected", 1, server);
g_free(params);
}
static void event_server_info(IRC_SERVER_REC *server, const char *data)
{
char *params, *ircd_version, *usermodes, *chanmodes;
g_return_if_fail(server != NULL);
params = event_get_params(data, 5, NULL, NULL, &ircd_version, &usermodes, &chanmodes);
/* check if server understands I and e channel modes */
if (strchr(chanmodes, 'I') && strchr(chanmodes, 'e'))
server->emode_known = TRUE;
/* save server version */
g_free_not_null(server->version);
server->version = g_strdup(ircd_version);
g_free(params);
}
static void event_server_banned(IRC_SERVER_REC *server, const char *data)
{
g_return_if_fail(server != NULL);
server->banned = TRUE;
}
static void event_error(IRC_SERVER_REC *server, const char *data)
{
g_return_if_fail(server != NULL);
if (!server->connected && (stristr(data, "Unauthorized") != NULL ||
stristr(data, "K-lined") != NULL))
server->banned = TRUE;
}
static void event_ping(IRC_SERVER_REC *server, const char *data)
{
char *str;
g_return_if_fail(data != NULL);
str = g_strdup_printf("PONG %s", data);
irc_send_cmd_now(server, str);
g_free(str);
}
static void event_empty(void)
{
}
void irc_servers_init(void)
{
settings_add_str("misc", "usermode", DEFAULT_USER_MODE);
settings_add_int("flood", "cmd_queue_speed", DEFAULT_CMD_QUEUE_SPEED);
settings_add_int("flood", "cmds_max_at_once", DEFAULT_CMDS_MAX_AT_ONCE);
cmd_tag = g_timeout_add(500, (GSourceFunc) servers_cmd_timeout, NULL);
signal_add("server connect free", (SIGNAL_FUNC) sig_server_connect_free);
signal_add("server connect", (SIGNAL_FUNC) sig_server_connect);
signal_add_first("server looking", (SIGNAL_FUNC) sig_server_looking);
signal_add_first("server connected", (SIGNAL_FUNC) sig_connected);
signal_add_last("server disconnected", (SIGNAL_FUNC) sig_disconnected);
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 465", (SIGNAL_FUNC) event_server_banned);
signal_add("event error", (SIGNAL_FUNC) event_error);
signal_add("event ping", (SIGNAL_FUNC) event_ping);
signal_add("event empty", (SIGNAL_FUNC) event_empty);
irc_servers_setup_init();
irc_servers_reconnect_init();
servers_idle_init();
}
void irc_servers_deinit(void)
{
while (servers != NULL)
server_disconnect(servers->data);
while (lookup_servers != NULL)
server_disconnect(lookup_servers->data);
g_source_remove(cmd_tag);
signal_remove("server connect free", (SIGNAL_FUNC) sig_server_connect_free);
signal_remove("server connect", (SIGNAL_FUNC) sig_server_connect);
signal_remove("server looking", (SIGNAL_FUNC) sig_server_looking);
signal_remove("server connected", (SIGNAL_FUNC) sig_connected);
signal_remove("server disconnected", (SIGNAL_FUNC) sig_disconnected);
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 465", (SIGNAL_FUNC) event_server_banned);
signal_remove("event error", (SIGNAL_FUNC) event_error);
signal_remove("event ping", (SIGNAL_FUNC) event_ping);
signal_remove("event empty", (SIGNAL_FUNC) event_empty);
irc_servers_setup_deinit();
irc_servers_reconnect_deinit();
servers_idle_deinit();
}
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