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eiwic.c
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eiwic.c
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/******************************************************************************
* eiwic - Extensible Ircbot Written In C
* Copyright (C) Hannes Gr�uler <[email protected]>
*
* eiwic.c: Main eiwic source file - IRC, connection and plugin handling
*****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <netdb.h>
#include <time.h>
#include <arpa/inet.h>
#include <ctype.h>
#include <errno.h>
#include "eiwic.h"
#include "settings.h"
#include "numerics.h"
#include "connections.h"
#include "plugins.h"
#define ARGS "l:v:t:dhn"
extern char *optarg;
extern int optind;
extern int opterr;
extern int optopt;
GLOBAL *e_global;
PLUGIN *plugin;
void sigint();
void sigsegv();
void enter_vvd_section(u_char *);
void irc_login();
void banner(void);
void syntax(char *);
int init(char *);
int launch(void);
int main(int argc, char *argv[])
{
int c,
verbose = 2,
logging = 0,
daemon = 0,
noconnect = 0;
char logfile[128], testtrigger[300];
optarg = NULL;
plugin = NULL;
*logfile = 0;
*testtrigger = '\0';
banner();
while ((c = getopt(argc, argv, ARGS)) != -1)
{
switch (c)
{
case 'h':
syntax(argv[0]);
exit(1);
break;
case 'n':
noconnect = 1;
break;
case 't':
noconnect = 1;
strncpy(testtrigger, optarg, 299);
break;
case 'd':
daemon = 1;
break;
case 'l':
logging = 1;
strncpy(logfile, optarg, 127);
break;
case 'v':
verbose = atoi(optarg);
break;
default:
syntax(argv[0]);
exit(1);
break;
}
}
if (argv[optind] == NULL)
{
syntax(argv[0]);
exit(1);
}
e_global = malloc(sizeof(struct eiwic_glob));
bzero(e_global, sizeof(struct eiwic_glob));
strcpy(e_global->var_logfilename, logfile);
strcpy(e_global->var_testtrigger, testtrigger);
e_global->var_daemon = daemon;
e_global->var_log = logging;
e_global->var_verbose = verbose;
e_global->var_noconnect = noconnect;
if (init(argv[optind]) >= 0)
{
log(LOG_STATUS, "Eiwic is launching.. (%i modules)", e_global->plugins.size);
launch();
}
return 0;
}
#ifdef VV_DEBUG
void enter_vvd_section(u_char *sec)
{
if (sec)
{
strncpy(e_global->vvd_section, sec, 40);
}
else
{
*e_global->vvd_section = 0;
e_global->vvd_param = NULL;
}
}
#endif
int sigrised()
{
e_global->jump_back = 1;
return sigsetjmp(e_global->jmp_past, 1);
}
void sigfall()
{
e_global->jump_back = 0;
}
void test_send_ping(void *t)
{
plug_sendf("PING :%d\r\n", time(NULL));
plug_timer_reg(time(NULL) + 10*60, test_send_ping, NULL);
}
/* from http://www.codeproject.com */
int wildcmp(char *wild, char *string) {
char *cp, *mp;
while ((*string) && (*wild != '*')) {
if ((*wild != *string) && (*wild != '?')) {
return 0;
}
wild++;
string++;
}
while (*string) {
if (*wild == '*') {
if (!*++wild) {
return 1;
}
mp = wild;
cp = string+1;
} else if ((*wild == *string) || (*wild == '?')) {
wild++;
string++;
} else {
wild = mp;
string = cp++;
}
}
while (*wild == '*') {
wild++;
}
return !*wild;
}
void eiwic_trigger_parse(char *line, OUTPUT *out, MSG *ircmsg)
{
char *trigger_str, *trigger_arg;
PLUGIN *plugin, *p;
TRIGGER *trigger;
DListElmt *el;
OUTPUT *put = out;
trigger_str = strtok(line, " ");
if (trigger_str != NULL)
{
trigger_arg = strtok(NULL, "");
FOR_EACH(&e_global->triggers, el)
{
/* log(LOG_VERBOSE_DEBUG, "Bla %s", trigger_arg); */
trigger = el->data;
if (strcasecmp(trigger->trigger, trigger_str) == 0
&& trigger->func != NULL)
{
log(LOG_DEBUG, "Recognized trigger %s.", trigger->trigger);
if (trigger->flags == TRIG_ADMIN && ircmsg != NULL)
{
char smask[600];
sprintf(smask, "%s!%s@%s", ircmsg->nick, ircmsg->username, ircmsg->host);
log(LOG_DEBUG,
"%s: is an ADMIN trigger, checking %s against %s.", trigger->trigger,
set_get_string("admin_mask"), smask);
if (!wildcmp(set_get_string("admin_mask"), smask)) continue;
}
if (put == NULL && ircmsg != NULL)
{
if (ircmsg->channel)
{
log(LOG_DEBUG, "output will be CHANNEL '%s'", ircmsg->channel->name);
put = ircmsg->channel->output;
}
else if (ircmsg->user)
{
if (strcmp(ircmsg->cmd, "notice") == 0) {
log(LOG_DEBUG, "output will be USER '%s' [notice]", ircmsg->user->nick);
if (ircmsg->user->output_notice == NULL)
{
ircmsg->user->output_notice = output_open(OP_NOTICE, ircmsg->user);
}
put = ircmsg->user->output_notice;
}
else {
log(LOG_DEBUG, "output will be USER '%s' [query]", ircmsg->user->nick);
if (ircmsg->user->output == NULL)
{
ircmsg->user->output = output_open(OP_QUERY, ircmsg->user);
}
put = ircmsg->user->output;
}
}
}
else if (put != NULL)
{
log(LOG_DEBUG, "output will be %d", put->op_id);
}
log(LOG_DEBUG, "%s: calling "
"ep_triggers and "
"function from module %s",
trigger->trigger,
(trigger->plugin?
trigger->plugin->name:
NULL));
FOR_EACH_DATA(&e_global->plugins, p)
if (p->ep_trigger != NULL)
{
if (sigrised() == 0)
{
plugin = p;
p->ep_trigger(trigger, put, ircmsg);
plugin = NULL;
}
else
{
sigfall();
SEGWARN(p, "ep_trigger");
}
sigfall();
}
END_DATA
if (sigrised() == 0)
{
plugin = trigger->plugin;
trigger->func(trigger_arg, put, ircmsg);
plugin = NULL;
}
else
{
sigfall();
SEGWARN(trigger->plugin, "e_trigger_f");
}
sigfall();
#ifdef VV_DEBUG
log(LOG_VERBOSE_DEBUG, "ep_trigger and module func finished.");
#endif
}
}
}
/* log(LOG_VERBOSE_DEBUG, "Bla2"); */
}
void eiwic_trigger_parse_this(char *t) {
eiwic_trigger_parse(t, e_global->plugin_output, NULL);
}
void irc_parse(struct eiwic_ircmsg *ircmsg)
{
volatile DListElmt *el;
PLUGIN *plug, *p;
TRIGGER *trigger;
MSG m;
char *trigger_str, *trigger_arg;
memcpy(&m, ircmsg, sizeof(MSG));
#ifdef VV_DEBUG
enter_vvd_section("irc_parse");
if (ircmsg->is_server)
{
if (ircmsg->cmd_num > 0)
log(LOG_DEBUG, "[IRCMSG] (server) %s sends %i to %s: %s",
ircmsg->server, ircmsg->cmd_num, ircmsg->to, ircmsg->args);
else
log(LOG_DEBUG, "[IRCMSG] (server) %s sends %s to %s: %s",
ircmsg->server, ircmsg->cmd, ircmsg->to, ircmsg->args);
}
else
{
if (ircmsg->cmd_num > 0)
log(LOG_DEBUG, "[IRCMSG] %s (%s@%s) sends %i to %s: %s",
ircmsg->nick, ircmsg->username, ircmsg->host, ircmsg->cmd_num, ircmsg->to, ircmsg->args);
else
log(LOG_DEBUG, "[IRCMSG] %s (%s@%s) sends %s to %s: %s",
ircmsg->nick, ircmsg->username, ircmsg->host, ircmsg->cmd, ircmsg->to, ircmsg->args);
}
#endif
if (ircmsg->cmd_num == 0)
{
/* TODO: "nick" -> user_nickset */
if (strcmp(ircmsg->cmd, "ping") == 0 && ircmsg->is_server) {
plug_sendf("PONG :%s\r\n", ircmsg->args);
}
else
if (strcmp(ircmsg->cmd, "error") == 0) {
log(LOG_WARNING, "Error from server: %s", ircmsg->args);
}
else
if (strcmp(ircmsg->cmd, "join") == 0) {
if (strcmp(ircmsg->nick, e_global->botnick) == 0)
{
CHANNEL *chan = channel_add(ircmsg->args);
chan->joined = 1;
}
user_add(ircmsg->nick);
}
else
if (strcmp(ircmsg->cmd, "kick") == 0) {
if (strcasecmp(strtok(ircmsg->args, " "), e_global->botnick) == 0)
{
log(LOG_DEBUG, "I was kicked from %s by %s! I hate this mofo!",
ircmsg->to, ircmsg->nick, ircmsg->args);
plug_timer_reg(time(NULL) + set_get_int("rejoin_sleep"), channel_join,
channel_find(ircmsg->to));
}
}
else
if (strcmp(ircmsg->cmd, "privmsg") == 0) {
memcpy(&m, ircmsg, sizeof(struct eiwic_ircmsg));
eiwic_trigger_parse((char *)m.args, NULL, &m);
}
else
if (strcmp(ircmsg->cmd, "notice") == 0) {
memcpy(&m, ircmsg, sizeof(struct eiwic_ircmsg));
eiwic_trigger_parse((char *)m.args, NULL, &m);
}
}
else
switch (ircmsg->cmd_num)
{
case RPL_WELCOME:
strcpy(e_global->botnick, ircmsg->to);
log(LOG_STATUS, "Successfully logged into IRC server");
#ifdef VV_DEBUG
log(LOG_VERBOSE_DEBUG, "----> Server=%s; Nickname=%s", ircmsg->server, e_global->botnick);
#endif
e_global->logged_in = 1;
plug_timer_reg(time(NULL) + 100, test_send_ping, NULL);
/* Join all channels */
channel_update();
break;
case RPL_NAMREPLY:
{
char *chan, *users, *nick;
if ((chan = strtok(ircmsg->args, ":")) == NULL)
break;
if (*chan == '@' || *chan == '+')
chan += 2;
if ((users = strtok(NULL, "")) == NULL)
break;
nick = strtok(users, " ");
if (nick) do
{
if (*nick == '@' ||
*nick == '+' ||
*nick == '%' ||
*nick == '&')
nick++;
user_add(nick);
} while (nick = strtok(NULL, " "));
}
break;
case ERR_NICKNAMEINUSE:
if (e_global->logged_in == 0)
{
/* this sucks but anyway */
char buf[17];
strncpy(buf, set_get_string("nick"), 15);
sprintf(&buf[strlen(buf)>7?7:strlen(buf)], "%i", rand() % 99);
plug_sendf("NICK %s\r\n", buf);
}
break;
}
init_modules();
FOR_EACH(&e_global->plugins, el)
{
plug = el->data;
if (plug->ep_parse == NULL)
continue;
if (sigrised() == 0)
{
plugin = plug;
plugin->ep_parse(ircmsg);
plugin = NULL;
}
else
{
sigfall();
SEGWARN(plugin, "ep_parse");
}
sigfall();
}
/* Post-module-processing parsing... */
if (ircmsg->cmd_num == 0)
{
if (strcmp(ircmsg->cmd, "quit") == 0) {
user_remove(ircmsg->user);
}
else
if (strcmp(ircmsg->cmd, "nick") == 0) {
if (strcmp(ircmsg->user->nick, e_global->botnick) == 0)
{
strcpy(e_global->botnick, ircmsg->args);
}
}
else
if (strcmp(ircmsg->cmd, "part") == 0) {
if (strcmp(ircmsg->nick, e_global->botnick) == 0
&& ircmsg->channel != NULL)
{
ircmsg->channel->joined = 0;
}
}
}
}
void irc_resolve(char *buf, struct eiwic_ircmsg *ircmsg)
{
char *loc,
*from = NULL,
*to =NULL,
*command=NULL,
*args=NULL,
from_nick[40],
from_user[20],
from_host[255],
*edoff;
#ifdef VV_DEBUG
enter_vvd_section("irc_resolve");
e_global->vvd_param = buf;
#endif
bzero(ircmsg, sizeof(MSG));
bzero(from_nick, 40);
bzero(from_user, 20);
bzero(from_host, 255);
loc = (char *)malloc(strlen(buf) + 1);
strcpy(loc, buf);
if (loc[0] == ':')
{
#ifdef VV_DEBUG
enter_vvd_section("irc_resolve:chk1");
#endif
from = strtok(loc, " ") + 1;
command = strtok(NULL, " ");
to = strtok(NULL, "\r\n");
if (*to == ':')
{
args = to + 1;
to = NULL;
}
else
{
if ((args = strchr(to, ' ')) != NULL)
{
*args = 0;
args++;
if (*args == ':') args++;
}
else args = "";
}
#ifdef VV_DEBUG
enter_vvd_section("irc_resolve:chk2");
#endif
strncpy(from_nick, from, sizeof(from_nick)-1);
edoff = strchr(from_nick, '!');
if (edoff)
{
*edoff=0;
strncpy(from_user, strchr(from, '!') + 1,
sizeof(from_user)-1);
edoff = strchr(from_user, '@');
*edoff=0;
strcpy(from_host, strchr(from, '@') + 1);
}
}
else
{
args = strchr(loc, ' ') + 1;
if (args)
{
if (args[0] == ':') args++;
command = strtok(loc, " ");
strtok(args, "\r\n");
}
else
{
command = loc;
}
}
#ifdef VV_DEBUG
enter_vvd_section("irc_resolve:chk3");
#endif
if (command) ircmsg->cmd_num = atoi(command);
if (command) strcpy(ircmsg->cmd, command);
if (to)
{
CHANNEL *c;
strcpy(ircmsg->to, to);
if (c = channel_find(ircmsg->to))
{
ircmsg->channel = c;
}
}
if (args) strcpy(ircmsg->args, args);
if (strlen(from_user) == 0)
{
ircmsg->is_server = 1;
strcpy(ircmsg->server, from_nick);
}
else
{
ircmsg->is_server = 0;
strcpy(ircmsg->nick, from_nick);
strcpy(ircmsg->username, from_user);
strcpy(ircmsg->host, from_host);
ircmsg->user = user_add(ircmsg->nick);
}
strtolower(ircmsg->cmd);
free(loc);
}
void eiwic_test_trigger()
{
}
int proxy_login()
{
char buf[2048], *s;
int len, x;
sprintf(buf, "CONNECT %s:%i HTTP/1.0\r\n\r\n",
e_global->server->host, e_global->server->port);
send(e_global->var_socket, buf, strlen(buf), 0);
*buf = 0;
x = 0;
while ((len = recv(e_global->var_socket, &buf[x], 512, 0)) > 0)
{
buf[x + len] = 0;
if (strstr(buf, "\r\n\r\n"))
{
#ifdef VV_DEBUG
log(LOG_DEBUG, "%s", buf);
#endif
if (strtok(buf, " "))
{
s = strtok(NULL, " ");
if (s)
if (atoi(s) == 200)
{
return 1;
}
}
close(e_global->var_socket);
return -1;
}
x = strlen(buf);
}
close(e_global->var_socket);
return -1;
}
void irc_login()
{
plug_sendf("USER %s eiwic eiwic :%s\r\n",
set_get_string("username"),
set_get_string("realname"));
plug_sendf("NICK %s\r\n", set_get_string("nick"));
}
void eiwic_exit(int i) /* exit() wrapper */
{
CONN *conn;
log(LOG_STATUS, "Shutting down sockets and closing connections..", i);
del_conn:
FOR_EACH_DATA(&e_global->connections, conn)
{
conn_close(conn);
goto del_conn;
}
END_DATA;
log(LOG_STATUS, "Eiwic quitting (%d)..", i);
exit(i);
}
void sigsegv()
{
if (e_global->jump_back == 1)
{
plugin = NULL;
siglongjmp(e_global->jmp_past, 0);
}
log(LOG_ERROR, "Segmentation fault. Quitting.");
#ifdef VV_DEBUG
log(LOG_DEBUG, "Segfault in vvd_section: %s", e_global->vvd_section);
if (e_global->vvd_param)
log(LOG_DEBUG, "Segfault w/ vvv_param: %s", e_global->vvd_param);
#endif
eiwic_exit(1);
}
void sigint()
{
/* By pressing Ctrl-C one time, the bot will try
to disconnect from the server and quit. If the
disconnect doesn't succeed, another Ctrl-C will
make the program exit directly.
*/
if (e_global->quit == 1)
{
eiwic_exit(1);
}
else
{
e_global->quit = 1;
plug_send("QUIT :SIGINT\r\n");
plug_send(NULL);
}
}
void banner(void)
{
}
void syntax(char *argv0)
{
fprintf(stdout, "usage: %s [options] <configfile>\n", argv0);
fprintf(stdout, "options:\n");
fprintf(stdout, " -h show help\n");
fprintf(stdout, " -t '!trig' use this for testing triggers offline\n");
fprintf(stdout, " -d daemon mode, fork into background\n");
fprintf(stdout, " -l file message log into a file (if file is \"-\", it will be\n");
fprintf(stdout, " printed to stdout)\n");
fprintf(stdout, " -v level verbosity level to log messages, default = 1\n");
fprintf(stdout, " 0 = only log errors\n");
fprintf(stdout, " 1 = also log warnings\n");
fprintf(stdout, " 2 = also log normal status messages\n");
fprintf(stdout, " 3 = also log debug messages\n");
fprintf(stdout, " 4 = also log debug messages for initialization\n");
fprintf(stdout, " 5 = also log very verbose debug messages\n");
fprintf(stdout, " ('./configure --vv-debug' required)\n\n");
fprintf(stdout, "examples:\n");
fprintf(stdout, "1) Interesting output to stdout:\n");
fprintf(stdout, " %s -l - -v 2 bot.conf\n", argv0);
fprintf(stdout, "2) Background mode with logfile:\n");
fprintf(stdout, " %s -l eiwic_error.log -d bot.conf\n", argv0);
fprintf(stdout, "3) Debug bot:\n");
fprintf(stdout, " %s -l - -v 10 bot.conf\n", argv0);
fprintf(stdout, "4) Debug your trigger without connecting to a server:\n");
fprintf(stdout, " %s -l - -v 3 bot.conf -t '!say rockn roll'\n", argv0);
fprintf(stdout, "5) Spit out nothing else then the trigger output:\n");
fprintf(stdout, " %s -l - -v 0 bot.conf -t '!say rockn roll'\n", argv0);
fflush(stdout);
}
int init_modules()
{
int err = 0;
PLUGIN *p;
DListElmt *el;
if (e_global->mod_need_init == 1)
{
log(LOG_STATUS, "Initializing modules..");
FOR_EACH(&e_global->plugins, el)
{
p = el->data;
if (p->ep_init && p->inited == 0)
{
e_global->jump_back = 1;
if (sigsetjmp(e_global->jmp_past, 1) == 0)
{
#ifdef VV_DEBUG
log(LOG_VERBOSE_DEBUG, "module(%s) %i,%i", p->name, p, p->ep_init);
#endif
plugin = p;
if (p->ep_init(e_global, p, p->init_out) == 0)
{
log(LOG_ERROR, "Initialization of %s failed.", p->name);
err++;
plugin = NULL;
/* todo: unload modul */
break;
}
p->inited = 1;
plugin = NULL;
}
else
{
e_global->jump_back = 0;
SEGWARN(p, "ep_init");
/* todo: unload modul */
}
e_global->jump_back = 0;
}
}
}
e_global->mod_need_init = 0;
}
int init(char *conf)
{
int err = 0;
PLUGIN *p;
DListElmt *el;
MODLINK *link;
#ifdef VV_DEBUG
enter_vvd_section("init");
#endif
srand(time(NULL));
signal(SIGHUP,SIG_IGN);
signal(SIGPIPE,SIG_IGN);
signal(SIGINT, sigint);
signal(SIGSEGV, sigsegv);
if (e_global->var_log)
{
if (strcmp(e_global->var_logfilename, "-") == 0)
{
strcpy(e_global->var_logfilename, "stdout");
e_global->var_logfile = stdout;
}
else
{
e_global->var_logfile = fopen(e_global->var_logfilename, "a");
}
if (e_global->var_logfile == NULL)
{
err++;
perror("Unable to open log file");
goto abort;
}
}
log(LOG_STATUS, "Initializing eiwic..");
dlist_init(&e_global->plugins, plug_destroy);
dlist_init(&e_global->triggers, plug_trigger_destroy);
dlist_init(&e_global->timers, plug_timer_destroy);
dlist_init(&e_global->connections, conn_destroy);
dlist_init(&e_global->channels, channel_destroy);
dlist_init(&e_global->servers, server_destroy);
dlist_init(&e_global->settings, set_destroy);
dlist_init(&e_global->users, user_destroy);
dlist_init(&e_global->outputs, output_destroy);
e_global->log_output = output_open(OP_LOG, LOG_STATUS);
link = malloc(sizeof(MODLINK));
link->set_add = set_add;
link->set_find = set_find;
link->set_set = set_set;
link->set_is = set_is;
link->set_get_int = set_get_int;
link->set_get_float = set_get_float;
link->set_get_string = set_get_string;
link->set_remove = set_remove;
link->plug_load = plug_load;
link->plug_add = plug_add;
link->plug_unload = plug_unload;
link->plug_remove = plug_remove;
link->plug_destroy = plug_destroy;
link->plug_trigger_reg = plug_trigger_reg;
link->plug_trigger_destroy = plug_trigger_destroy;
link->plug_trigger_unreg = plug_trigger_unreg;
link->plug_timer_reg = plug_timer_reg;
link->plug_timer_destroy = plug_timer_destroy;
link->plug_timer_unreg = plug_timer_unreg;
link->plug_timers = plug_timers;
link->conn_http_get = conn_http_get;
link->conn_unreg = conn_unreg;
link->conn_connect = conn_connect;
link->conn_destroy = conn_destroy;
link->conn_close = conn_close;
link->conn_listen = conn_listen;
link->conn_accept = conn_accept;
link->server_add = server_add;
link->server_destroy = server_destroy;
link->server_remove = server_remove;
link->channel_add = channel_add;
link->channel_remove = channel_remove;
link->channel_destroy = channel_destroy;
link->channel_join = channel_join;
link->channel_find = channel_find;
link->user_add =user_add;
link->user_nickset =user_nickset;
link->user_remove =user_remove;
link->user_destroy =user_destroy;
link->user_find =user_find;
link->output_open = output_open;
link->output_print = output_print;
link->output_tostring = output_tostring;
link->output_printf = output_printf;
link->output_close = output_close;
link->output_destroy = output_destroy;
link->plug_send = plug_send;
link->plug_sendf = plug_sendf;
link->log = log;
link->plog = plog;
link->findip = findip;
#ifdef IPV6
link->findip6 = findip6;
#endif
e_global->modlink = (void *)link;
set_add(SET_STRING, "config_file", conf);
set_add(SET_INT, "connect_sleep", 10);
set_add(SET_INT, "exhaused_sleep", 40);
set_add(SET_INT, "rejoin_sleep", 7);
set_add(SET_STRING, "nick", "");
set_add(SET_STRING, "username", "eiwic");
set_add(SET_STRING, "realname", "the splitrider's bot");
set_add(SET_STRING, "admin_mask", ""); /* no admin by default */
set_add(SET_STRING, "vhost", "");
set_add(SET_STRING, "proxy_host", "");
set_add(SET_INT, "proxy_port", 3128);
set_add(SET_STRING, "module_path", "./");
if (conf_loadfile() == -1)
{
err++;
goto abort;
}
init_modules();
if (set_is("proxy_host"))
{
e_global->proxy = malloc(sizeof(SERVER));
bzero(e_global->proxy, sizeof(SERVER));
strncpy(e_global->proxy->host, set_get_string("proxy_host"), 127);
e_global->proxy->port = set_get_int("proxy_port");
}
else
{
e_global->proxy = NULL;
}
e_global->server_input = output_open(OP_SERVER_INPUT);
if (e_global->plugins.size <= 0)
{
log(LOG_WARNING, "No modules has been added!");
}
if (e_global->channels.size <= 0)
{
log(LOG_WARNING, "No channel has been added!");
}
if (e_global->servers.size <= 0)
{
err++;
log(LOG_ERROR, "No server has been added!");
}