pegasus/unrealircd
1
0
Fork 0
mirror of https://github.com/unrealircd/unrealircd.git synced 2026-06-25 21:06:37 +02:00
Code Activity
Files
2eef007c8a45919cf7b4ece402efb600c13a492f
unrealircd/src/ircd.c
T

1503 lines
37 KiB
C
Raw Blame History

/************************************************************************
* Unreal Internet Relay Chat Daemon, src/ircd.c
* Copyright (C) 1990 Jarkko Oikarinen and
* University of Oulu, Computing Center
*
* 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef CLEAN_COMPILE
static char sccsid[] =
"@(#)ircd.c 2.48 3/9/94 (C) 1988 University of Oulu, \
Computing Center and Jarkko Oikarinen";
#endif
#include "config.h"
#include "struct.h"
#include "common.h"
#include "sys.h"
#include "numeric.h"
#include "msg.h"
#include <sys/stat.h>
#include <signal.h>
#include <fcntl.h>
#include <sys/types.h>
#ifndef _WIN32
#include <sys/file.h>
#include <pwd.h>
#include <sys/time.h>
#else
#include <io.h>
#include <direct.h>
#endif
#ifdef HPUX
#define _KERNEL /* HPUX has the world's worst headers... */
#endif
#ifndef _WIN32
#include <sys/resource.h>
#endif
#ifdef HPUX
#undef _KERNEL
#endif
#include <errno.h>
#ifdef HAVE_PSSTRINGS
#include <sys/exec.h>
#endif
#ifdef HAVE_PSTAT
#include <sys/pstat.h>
#endif
#include "h.h"
#ifndef NO_FDLIST
#include "fdlist.h"
#endif
#ifdef STRIPBADWORDS
#include "badwords.h"
#endif
#include "version.h"
#include "proto.h"
#ifdef _WIN32
extern BOOL IsService;
#endif
ID_Copyright
("(C) 1988 University of Oulu, Computing Center and Jarkko Oikarinen");
ID_Notes("2.48 3/9/94");
#ifdef __FreeBSD__
char *malloc_options = "h" MALLOC_FLAGS_EXTRA;
#endif
time_t TSoffset = 0;
#ifndef _WIN32
extern char unreallogo[];
#endif
int SVSNOOP = 0;
extern char *buildid;
time_t timeofday = 0;
int tainted = 0;
LoopStruct loop;
extern aMotd *opermotd;
extern aMotd *svsmotd;
extern aMotd *motd;
extern aMotd *rules;
extern aMotd *botmotd;
MemoryInfo StatsZ;
int R_do_dns, R_fin_dns, R_fin_dnsc, R_fail_dns, R_do_id, R_fin_id, R_fail_id;
char REPORT_DO_DNS[128], REPORT_FIN_DNS[128], REPORT_FIN_DNSC[128],
REPORT_FAIL_DNS[128], REPORT_DO_ID[128], REPORT_FIN_ID[128],
REPORT_FAIL_ID[128];
extern ircstats IRCstats;
aClient me; /* That's me */
char *me_hash;
aClient *client = &me; /* Pointer to beginning of Client list */
extern char backupbuf[8192];
#ifdef _WIN32
extern void CleanUpSegv(int sig);
#endif
#ifndef NO_FDLIST
fdlist default_fdlist;
fdlist busycli_fdlist;
fdlist serv_fdlist;
fdlist oper_fdlist;
fdlist unknown_fdlist;
float currentrate;
float currentrate2; /* outgoing */
float highest_rate = 0;
float highest_rate2 = 0;
int lifesux = 0;
int LRV = LOADRECV;
TS LCF = LOADCFREQ;
int currlife = 0;
int HTMLOCK = 0;
int noisy_htm = 1;
long lastrecvK = 0;
long lastsendK = 0;
TS check_fdlists();
#endif
unsigned char conf_debuglevel = 0;
void save_stats(void)
{
FILE *stats = fopen("ircd.stats", "w");
if (!stats)
return;
fprintf(stats, "%i\n", IRCstats.clients);
fprintf(stats, "%i\n", IRCstats.invisible);
fprintf(stats, "%i\n", IRCstats.servers);
fprintf(stats, "%i\n", IRCstats.operators);
fprintf(stats, "%i\n", IRCstats.unknown);
fprintf(stats, "%i\n", IRCstats.me_clients);
fprintf(stats, "%i\n", IRCstats.me_servers);
fprintf(stats, "%i\n", IRCstats.me_max);
fprintf(stats, "%i\n", IRCstats.global_max);
fclose(stats);
}
void server_reboot(char *);
void restart(char *);
static void open_debugfile(), setup_signals();
extern void init_glines(void);
TS last_garbage_collect = 0;
char **myargv;
int portnum = -1; /* Server port number, listening this */
char *configfile = CONFIGFILE; /* Server configuration file */
int debuglevel = 10; /* Server debug level */
int bootopt = 0; /* Server boot option flags */
char *debugmode = ""; /* -"- -"- -"- */
char *sbrk0; /* initial sbrk(0) */
static int dorehash = 0;
static char *dpath = DPATH;
int booted = FALSE;
TS nextconnect = 1; /* time for next try_connections call */
TS nextping = 1; /* same as above for check_pings() */
TS nextdnscheck = 0; /* next time to poll dns to force timeouts */
TS nextexpire = 1; /* next expire run on the dns cache */
TS lastlucheck = 0;
#ifdef UNREAL_DEBUG
#undef CHROOTDIR
#define CHROOT
#endif
TS NOW;
#if defined(PROFIL) && !defined(_WIN32)
extern etext();
VOIDSIG s_monitor(void)
{
static int mon = 0;
#ifdef POSIX_SIGNALS
struct sigaction act;
#endif
(void)moncontrol(mon);
mon = 1 - mon;
#ifdef POSIX_SIGNALS
act.sa_handler = s_rehash;
act.sa_flags = 0;
(void)sigemptyset(&act.sa_mask);
(void)sigaddset(&act.sa_mask, SIGUSR1);
(void)sigaction(SIGUSR1, &act, NULL);
#else
(void)signal(SIGUSR1, s_monitor);
#endif
}
#endif
VOIDSIG s_die()
{
#ifdef _WIN32
int i;
aClient *cptr;
#endif
unload_all_modules();
#ifndef _WIN32
flush_connections(&me);
#else
for (i = LastSlot; i >= 0; i--)
if ((cptr = local[i]) && DBufLength(&cptr->sendQ) > 0)
(void)send_queued(cptr);
if (!IsService)
#endif
exit(-1);
#ifdef _WIN32
else {
SERVICE_STATUS status;
SC_HANDLE hSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
SC_HANDLE hService = OpenService(hSCManager, "UnrealIRCd", SERVICE_STOP);
ControlService(hService, SERVICE_CONTROL_STOP, &status);
}
#endif
}
#ifndef _WIN32
static VOIDSIG s_rehash()
#else
VOIDSIG s_rehash()
#endif
{
#ifdef POSIX_SIGNALS
struct sigaction act;
#endif
dorehash = 1;
#ifdef POSIX_SIGNALS
act.sa_handler = s_rehash;
act.sa_flags = 0;
(void)sigemptyset(&act.sa_mask);
(void)sigaddset(&act.sa_mask, SIGHUP);
(void)sigaction(SIGHUP, &act, NULL);
#else
# ifndef _WIN32
(void)signal(SIGHUP, s_rehash); /* sysV -argv */
# endif
#endif
}
void restart(char *mesg)
{
server_reboot(mesg);
}
VOIDSIG s_restart()
{
static int restarting = 0;
if (restarting == 0) {
/*
* Send (or attempt to) a dying scream to oper if present
*/
restarting = 1;
server_reboot("SIGINT");
}
}
#ifndef _WIN32
VOIDSIG dummy()
{
#ifndef HAVE_RELIABLE_SIGNALS
(void)signal(SIGALRM, dummy);
(void)signal(SIGPIPE, dummy);
#ifndef HPUX /* Only 9k/800 series require this, but don't know how to.. */
# ifdef SIGWINCH
(void)signal(SIGWINCH, dummy);
# endif
#endif
#else
# ifdef POSIX_SIGNALS
struct sigaction act;
act.sa_handler = dummy;
act.sa_flags = 0;
(void)sigemptyset(&act.sa_mask);
(void)sigaddset(&act.sa_mask, SIGALRM);
(void)sigaddset(&act.sa_mask, SIGPIPE);
# ifdef SIGWINCH
(void)sigaddset(&act.sa_mask, SIGWINCH);
# endif
(void)sigaction(SIGALRM, &act, (struct sigaction *)NULL);
(void)sigaction(SIGPIPE, &act, (struct sigaction *)NULL);
# ifdef SIGWINCH
(void)sigaction(SIGWINCH, &act, (struct sigaction *)NULL);
# endif
# endif
#endif
}
#endif /* _WIN32 */
void server_reboot(char *mesg)
{
int i;
#ifdef _WIN32
aClient *cptr;
#endif
sendto_realops("Aieeeee!!! Restarting server... %s", mesg);
Debug((DEBUG_NOTICE, "Restarting server... %s", mesg));
#ifndef _WIN32
flush_connections(&me);
#else
for (i = LastSlot; i >= 0; i--)
if ((cptr = local[i]) && DBufLength(&cptr->sendQ) > 0)
(void)send_queued(cptr);
#endif
/*
* ** fd 0 must be 'preserved' if either the -d or -i options have
* ** been passed to us before restarting.
*/
#ifdef HAVE_SYSLOG
(void)closelog();
#endif
#ifndef _WIN32
for (i = 3; i < MAXCONNECTIONS; i++)
(void)close(i);
if (!(bootopt & (BOOT_TTY | BOOT_DEBUG)))
(void)close(2);
(void)close(1);
if ((bootopt & BOOT_CONSOLE) || isatty(0))
(void)close(0);
(void)execv(MYNAME, myargv);
#else
close_connections();
CleanUp();
(void)execv(myargv[0], myargv);
#endif
#ifndef _WIN32
Debug((DEBUG_FATAL, "Couldn't restart server: %s", strerror(errno)));
#else
Debug((DEBUG_FATAL, "Couldn't restart server: %s",
strerror(GetLastError())));
#endif
unload_all_modules();
exit(-1);
}
char *areason;
EVENT(loop_event)
{
if (loop.do_garbage_collect == 1) {
garbage_collect(NULL);
}
}
EVENT(garbage_collect)
{
extern int freelinks;
extern Link *freelink;
Link p;
int ii;
if (loop.do_garbage_collect == 1)
sendto_realops("Doing garbage collection ..");
if (freelinks > HOW_MANY_FREELINKS_ALLOWED) {
ii = freelinks;
while (freelink && (freelinks > HOW_MANY_FREELINKS_ALLOWED)) {
freelinks--;
p.next = freelink;
freelink = freelink->next;
MyFree(p.next);
}
if (loop.do_garbage_collect == 1) {
loop.do_garbage_collect = 0;
sendto_realops
("Cleaned up %i garbage blocks", (ii - freelinks));
}
}
if (loop.do_garbage_collect == 1)
loop.do_garbage_collect = 0;
}
/*
** try_connections
**
** Scan through configuration and try new connections.
** Returns the calendar time when the next call to this
** function should be made latest. (No harm done if this
** is called earlier or later...)
*/
static TS try_connections(TS currenttime)
{
ConfigItem_link *aconf;
ConfigItem_deny_link *deny;
aClient *cptr;
int connecting, confrq;
TS next = 0;
ConfigItem_class *cltmp;
connecting = FALSE;
Debug((DEBUG_NOTICE, "Connection check at : %s",
myctime(currenttime)));
for (aconf = conf_link; aconf; aconf = (ConfigItem_link *) aconf->next) {
/*
* Also when already connecting! (update holdtimes) --SRB
*/
if (!(aconf->options & CONNECT_AUTO))
continue;
cltmp = aconf->class;
/*
* ** Skip this entry if the use of it is still on hold until
* ** future. Otherwise handle this entry (and set it on hold
* ** until next time). Will reset only hold times, if already
* ** made one successfull connection... [this algorithm is
* ** a bit fuzzy... -- msa >;) ]
*/
if ((aconf->hold > currenttime)) {
if ((next > aconf->hold) || (next == 0))
next = aconf->hold;
continue;
}
confrq = cltmp->connfreq;
aconf->hold = currenttime + confrq;
/*
* ** Found a CONNECT config with port specified, scan clients
* ** and see if this server is already connected?
*/
cptr = find_name(aconf->servername, (aClient *)NULL);
if (!cptr && (cltmp->clients < cltmp->maxclients)) {
/*
* Check connect rules to see if we're allowed to try
*/
for (deny = conf_deny_link; deny;
deny = (ConfigItem_deny_link *) deny->next)
if (!match(deny->mask, aconf->servername)
&& crule_eval(deny->rule))
break;
if (connect_server(aconf, (aClient *)NULL,
(struct hostent *)NULL) == 0)
sendto_realops
("Connection to %s[%s] activated.",
aconf->servername, aconf->hostname);
}
if ((next > aconf->hold) || (next == 0))
next = aconf->hold;
}
Debug((DEBUG_NOTICE, "Next connection check : %s", myctime(next)));
return (next);
}
/* Now find_kill is only called when a kline-related command is used:
AKILL/RAKILL/KLINE/UNKLINE/REHASH. Very significant CPU usage decrease.
-- Barubary */
extern TS check_pings(TS currenttime)
{
aClient *cptr = NULL;
ConfigItem_ban *bconf = NULL;
char killflag = 0;
int i = 0;
char banbuf[1024];
int ping = 0;
for (i = 0; i <= LastSlot; i++) {
/*
* If something we should not touch ..
*/
if (!(cptr = local[i]) || IsMe(cptr) || IsLog(cptr))
continue;
/*
* ** Note: No need to notify opers here. It's
* ** already done when "FLAGS_DEADSOCKET" is set.
*/
if (cptr->flags & FLAGS_DEADSOCKET) {
(void)exit_client(cptr, cptr, &me, "Dead socket");
continue;
}
killflag = 0;
/*
* Check if user is banned
*/
if (loop.do_bancheck) {
if (find_tkline_match(cptr, 0) < 0) {
/*
* Client exited
*/
continue;
}
if (!killflag && IsPerson(cptr)) {
/*
* If it's a user, we check for CONF_BAN_USER
*/
bconf =
Find_ban(make_user_host(cptr->
user ? cptr->user->username : cptr->
username,
cptr->user ? cptr->user->realhost : cptr->
sockhost), CONF_BAN_USER);
if (bconf)
killflag++;
if (!killflag && !IsAnOper(cptr) &&
(bconf =
Find_ban(cptr->info, CONF_BAN_REALNAME))) {
killflag++;
}
}
/*
* If no cookie, we search for Z:lines
*/
if (!killflag)
if ((bconf =
Find_ban(Inet_ia2p(&cptr->ip),
CONF_BAN_IP)))
killflag++;
if (killflag) {
if (IsPerson(cptr))
sendto_realops("Ban active for %s (%s)",
get_client_name(cptr, FALSE),
bconf->reason ? bconf->
reason : "no reason");
if (IsServer(cptr))
sendto_realops
("Ban active for server %s (%s)",
get_client_name(cptr, FALSE),
bconf->reason ? bconf->
reason : "no reason");
if (bconf->reason) {
if (IsPerson(cptr))
snprintf(banbuf,
sizeof banbuf - 1,
"User has been banned (%s)",
bconf->reason);
snprintf(banbuf, sizeof banbuf - 1,
"Banned (%s)", bconf->reason);
(void)exit_client(cptr, cptr, &me,
banbuf);
} else {
if (IsPerson(cptr))
(void)exit_client(cptr, cptr,
&me,
"User has been banned");
else
(void)exit_client(cptr, cptr,
&me, "Banned");
}
continue;
}
}
/*
* We go into ping phase
*/
ping =
IsRegistered(cptr) ? (cptr->class ? cptr->
class->pingfreq : CONNECTTIMEOUT) : CONNECTTIMEOUT;
Debug((DEBUG_DEBUG, "c(%s)=%d p %d k %d a %d", cptr->name,
cptr->status, ping, killflag,
currenttime - cptr->lasttime));
/* If ping is less than or equal to the last time we received a command from them */
if (ping <= (currenttime - cptr->lasttime))
{
if (
/* If we have sent a ping */
((cptr->flags & FLAGS_PINGSENT)
/* And they had 2x ping frequency to respond */
&& ((currenttime - cptr->lasttime) >= (2 * ping)))
||
/* Or isn't registered and time spent is larger than ping .. */
(!IsRegistered(cptr) && (currenttime - cptr->since >= ping))
)
{
/* if it's registered and doing dns/auth, timeout */
if (!IsRegistered(cptr) && (DoingDNS(cptr) || DoingAuth(cptr)))
{
if (cptr->authfd >= 0) {
CLOSE_SOCK(cptr->authfd);
--OpenFiles;
cptr->authfd = -1;
cptr->count = 0;
*cptr->buffer = '\0';
}
if (SHOWCONNECTINFO) {
if (DoingDNS(cptr))
sendto_one(cptr,
REPORT_FAIL_DNS);
else if (DoingAuth(cptr))
sendto_one(cptr,
REPORT_FAIL_ID);
}
Debug((DEBUG_NOTICE,
"DNS/AUTH timeout %s",
get_client_name(cptr, TRUE)));
del_queries((char *)cptr);
ClearAuth(cptr);
ClearDNS(cptr);
SetAccess(cptr);
cptr->firsttime = currenttime;
cptr->lasttime = currenttime;
continue;
}
if (IsServer(cptr) || IsConnecting(cptr) ||
IsHandshake(cptr)
#ifdef USE_SSL
|| IsSSLConnectHandshake(cptr)
#endif
) {
sendto_realops
("No response from %s, closing link",
get_client_name(cptr, FALSE));
sendto_serv_butone(&me,
":%s GLOBOPS :No response from %s, closing link",
me.name, get_client_name(cptr,
FALSE));
}
#ifdef USE_SSL
if (IsSSLAcceptHandshake(cptr))
Debug((DEBUG_DEBUG, "ssl accept handshake timeout: %s (%li-%li > %li)", cptr->sockhost,
currenttime, cptr->since, ping));
#endif
exit_client(cptr, cptr, &me, "Ping timeout");
continue;
}
else if (IsRegistered(cptr) &&
((cptr->flags & FLAGS_PINGSENT) == 0)) {
/*
* if we havent PINGed the connection and we havent
* heard from it in a while, PING it to make sure
* it is still alive.
*/
cptr->flags |= FLAGS_PINGSENT;
/*
* not nice but does the job
*/
cptr->lasttime = currenttime - ping;
sendto_one(cptr, "%s :%s",
IsToken(cptr) ? TOK_PING : MSG_PING,
me.name);
}
}
/*
* Check UNKNOWN connections - if they have been in this state
* for > 100s, close them.
*/
if (IsUnknown(cptr)
#ifdef USE_SSL
|| (IsSSLAcceptHandshake(cptr) || IsSSLConnectHandshake(cptr))
#endif
)
if (cptr->firsttime ? ((currenttime - cptr->firsttime) >
100) : 0)
(void)exit_client(cptr, cptr, &me,
"Connection Timed Out");
}
/*
* EXPLANATION
* * on a server with a large volume of clients, at any given point
* * there may be a client which needs to be pinged the next second,
* * or even right away (a second may have passed while running
* * check_pings). Preserving CPU time is more important than
* * pinging clients out at exact times, IMO. Therefore, I am going to make
* * check_pings always return currenttime + 9. This means that it may take
* * a user up to 9 seconds more than pingfreq to timeout. Oh well.
* * Plus, the number is 9 to 'stagger' our check_pings calls out over
* * time, to avoid doing it and the other tasks ircd does at the same time
* * all the time (which are usually done on intervals of 5 seconds or so).
* * - lucas
* *
*/
if (loop.do_bancheck)
loop.do_bancheck = 0;
Debug((DEBUG_NOTICE, "Next check_ping() call at: %s, %d %d %d",
myctime(currenttime+9), ping, currenttime+9, currenttime));
return currenttime + 9;
}
/*
** bad_command
** This is called when the commandline is not acceptable.
** Give error message and exit without starting anything.
*/
static int bad_command(void)
{
#ifndef _WIN32
#ifdef CMDLINE_CONFIG
#define CMDLINE_CFG "[-f config] "
#else
#define CMDLINE_CFG ""
#endif
(void)printf
("Usage: ircd %s[-h servername] [-p portnumber] [-x loglevel] [-t] [-H]\n",
CMDLINE_CFG);
(void)printf("Server not started\n\n");
#else
if (!IsService) {
MessageBox(NULL,
"Usage: wircd [-h servername] [-p portnumber] [-x loglevel]\n",
"UnrealIRCD/32", MB_OK);
}
#endif
return (-1);
}
char chess[] = {
85, 110, 114, 101, 97, 108, 0
};
#ifndef NO_FDLIST
inline TS check_fdlists(TS now)
{
aClient *cptr;
int pri; /* temp. for priority */
int i, j;
j = 0;
for (i = LastSlot; i >= 0; i--) {
if (!(cptr = local[i]))
continue;
if (IsServer(cptr) || IsListening(cptr)
|| IsOper(cptr) || DoingAuth(cptr)) {
busycli_fdlist.entry[++j] = i;
continue;
}
pri = cptr->priority;
if (cptr->receiveM == cptr->lastrecvM)
pri += 2; /* lower a bit */
else
pri -= 30;
if (pri < 0)
pri = 0;
if (pri > 80)
pri = 80;
cptr->lastrecvM = cptr->receiveM;
cptr->priority = pri;
if ((pri < 10) || (!lifesux && (pri < 25)))
busycli_fdlist.entry[++j] = i;
}
busycli_fdlist.last_entry = j; /* rest of the fdlist is garbage */
return (now + FDLISTCHKFREQ + lifesux * FDLISTCHKFREQ);
}
EVENT(e_check_fdlists)
{
check_fdlists(TStime());
}
#endif
extern time_t TSoffset;
#ifndef _WIN32
int main(int argc, char *argv[])
#else
int InitwIRCD(int argc, char *argv[])
#endif
{
#ifdef _WIN32
WORD wVersionRequested = MAKEWORD(1, 1);
WSADATA wsaData;
#else
uid_t uid, euid;
TS delay = 0;
#endif
#ifdef HAVE_PSTAT
union pstun pstats;
#endif
int portarg = 0;
#ifdef FORCE_CORE
struct rlimit corelim;
#endif
#ifndef NO_FDLIST
TS nextfdlistcheck = 0; /*end of priority code */
#endif
#ifdef _WIN32
CreateMutex(NULL, FALSE, "UnrealMutex");
#endif
#if !defined(_WIN32) && !defined(_AMIGA)
sbrk0 = (char *)sbrk((size_t)0);
uid = getuid();
euid = geteuid();
# ifdef PROFIL
(void)monstartup(0, etext);
(void)moncontrol(1);
(void)signal(SIGUSR1, s_monitor);
# endif
#endif
#ifdef CHROOTDIR
if (chdir(dpath)) {
perror("chdir");
exit(-1);
}
ircd_res_init();
if (chroot(DPATH)) {
(void)fprintf(stderr, "ERROR: Cannot chdir/chroot\n");
exit(5);
}
#endif /*CHROOTDIR*/
myargv = argv;
#ifndef _WIN32
(void)umask(077); /* better safe than sorry --SRB */
#else
WSAStartup(wVersionRequested, &wsaData);
#endif
bzero((char *)&me, sizeof(me));
bzero(&StatsZ, sizeof(StatsZ));
setup_signals();
init_ircstats();
umode_init();
clear_scache_hash_table();
#ifdef FORCE_CORE
corelim.rlim_cur = corelim.rlim_max = RLIM_INFINITY;
if (setrlimit(RLIMIT_CORE, &corelim))
printf("unlimit core size failed; errno = %d\n", errno);
#endif
/*
* ** All command line parameters have the syntax "-fstring"
* ** or "-f string" (e.g. the space is optional). String may
* ** be empty. Flag characters cannot be concatenated (like
* ** "-fxyz"), it would conflict with the form "-fstring".
*/
while (--argc > 0 && (*++argv)[0] == '-') {
char *p = argv[0] + 1;
int flag = *p++;
if (flag == '\0' || *p == '\0') {
if (argc > 1 && argv[1][0] != '-') {
p = *++argv;
argc -= 1;
} else
p = "";
}
switch (flag) {
#ifndef _WIN32
case 'a':
bootopt |= BOOT_AUTODIE;
break;
case 'c':
bootopt |= BOOT_CONSOLE;
break;
case 'q':
bootopt |= BOOT_QUICK;
break;
case 'd':
(void)setuid((uid_t) uid);
#else
case 'd':
#endif
dpath = p;
break;
case 'F':
bootopt |= BOOT_NOFORK;
break;
#ifndef _WIN32
#ifdef CMDLINE_CONFIG
case 'f':
(void)setuid((uid_t) uid);
configfile = p;
break;
#endif
case 'h':
if (!strchr(p, '.')) {
(void)printf
("ERROR: %s is not valid: Server names must contain at least 1 \".\"\n",
p);
exit(1);
}
strncpyzt(me.name, p, sizeof(me.name));
break;
#endif
#ifndef _WIN32
case 'P':{
short type;
char *result;
srandom(TStime());
if ((type = Auth_FindType(p)) == -1) {
printf("No such auth type %s\n", p);
exit(0);
}
p = *++argv;
argc--;
if (!(result = Auth_Make(type, p))) {
printf("Authentication failed\n");
exit(0);
}
printf("Encrypted password is: %s\n", result);
exit(0);
}
#endif
case 'p':
if ((portarg = atoi(p)) > 0)
portnum = portarg;
break;
case 's':
(void)printf("sizeof(aClient) == %u\n",
sizeof(aClient));
(void)printf("sizeof(aChannel) == %u\n",
sizeof(aChannel));
(void)printf("sizeof(aServer) == %u\n",
sizeof(aServer));
(void)printf("sizeof(Link) == %u\n", sizeof(Link));
(void)printf("sizeof(anUser) == %u\n",
sizeof(anUser));
(void)printf("sizeof(aTKline) == %u\n",
sizeof(aTKline));
(void)printf("sizeof(struct ircstatsx) == %u\n",
sizeof(struct ircstatsx));
(void)printf("aClient remote == %u\n",
CLIENT_REMOTE_SIZE);
exit(0);
break;
#ifndef _WIN32
case 't':
(void)setuid((uid_t) uid);
bootopt |= BOOT_TTY;
break;
case 'v':
(void)printf("%s build %s\n", version, buildid);
#else
case 'v':
if (!IsService) {
MessageBox(NULL, version,
"UnrealIRCD/Win32 version", MB_OK);
}
#endif
exit(0);
case 'W':{
struct IN_ADDR bah;
int bit;
parse_netmask("255.255.255.255/8", &bah, &bit);
printf("%s - %d\n", Inet_ia2p(&bah), bit);
flag_add("m");
flag_del('m');
flag_add("n");
flag_add("m");
flag_del('m');
printf("%s\n", extraflags);
exit(0);
}
case 'C':
config_verbose = atoi(p);
break;
case 'x':
#ifdef DEBUGMODE
# ifndef _WIN32
(void)setuid((uid_t) uid);
# endif
debuglevel = atoi(p);
debugmode = *p ? p : "0";
bootopt |= BOOT_DEBUG;
break;
#else
# ifndef _WIN32
(void)fprintf(stderr,
"%s: DEBUGMODE must be defined for -x y\n",
myargv[0]);
# else
if (!IsService) {
MessageBox(NULL,
"DEBUGMODE must be defined for -x option",
"UnrealIRCD/32", MB_OK);
}
# endif
exit(0);
#endif
default:
bad_command();
break;
}
}
#ifndef CHROOT
if (chdir(dpath)) {
# ifndef _WIN32
perror("chdir");
# else
if (!IsService) {
MessageBox(NULL, strerror(GetLastError()),
"UnrealIRCD/32: chdir()", MB_OK);
}
# endif
exit(-1);
}
#endif
#ifndef _WIN32
/*
* didn't set debuglevel
*/
/*
* but asked for debugging output to tty
*/
if ((debuglevel < 0) && (bootopt & BOOT_TTY)) {
(void)fprintf(stderr,
"you specified -t without -x. use -x <n>\n");
exit(-1);
}
#endif
if (argc > 0)
return bad_command(); /* This should exit out */
#ifndef _WIN32
fprintf(stderr, "%s", unreallogo);
fprintf(stderr, " v%s\n", VERSIONONLY);
#ifdef USE_SSL
fprintf(stderr, " using %s\n\n", OPENSSL_VERSION_TEXT);
#endif
#endif
clear_client_hash_table();
clear_channel_hash_table();
clear_watch_hash_table();
bzero(&loop, sizeof(loop));
init_CommandHash();
initlists();
initwhowas();
initstats();
booted = FALSE;
/* Hack to stop people from being able to read the config file */
#if !defined(_WIN32) && !defined(_AMIGA) && DEFAULT_PERMISSIONS != 0
chmod(CPATH, DEFAULT_PERMISSIONS);
#endif
init_dynconf();
#ifdef STATIC_LINKING
{
ModuleInfo ModCoreInfo;
ModCoreInfo.size = sizeof(ModuleInfo);
ModCoreInfo.module_load = 0;
ModCoreInfo.handle = NULL;
l_commands_Test(&ModCoreInfo);
}
#endif
/*
* Add default class
*/
default_class =
(ConfigItem_class *) MyMallocEx(sizeof(ConfigItem_class));
default_class->flag.permanent = 1;
default_class->pingfreq = PINGFREQUENCY;
default_class->maxclients = 100;
default_class->sendq = MAXSENDQLENGTH;
default_class->name = "default";
AddListItem(default_class, conf_class);
if (init_conf(configfile, 0) < 0)
{
exit(-1);
}
booted = TRUE;
load_tunefile();
make_umodestr();
make_cmodestr();
if (!find_Command_simple("AWAY") || !find_Command_simple("KILL") ||
!find_Command_simple("OPER") || !find_Command_simple("PING"))
{
config_error("Someone forgot to load modules with proper commands in them. READ THE DOCUMENTATION");
exit(-4);
}
#ifdef USE_SSL
#ifndef _WIN32
fprintf(stderr, "* Initializing SSL.\n");
#endif
init_ssl();
#endif
#ifndef _WIN32
fprintf(stderr,
"* Dynamic configuration initialized .. booting IRCd.\n");
fprintf(stderr,
"---------------------------------------------------------------------\n");
#endif
open_debugfile();
#ifndef NO_FDLIST
init_fdlist(&serv_fdlist);
init_fdlist(&busycli_fdlist);
init_fdlist(&default_fdlist);
init_fdlist(&oper_fdlist);
init_fdlist(&unknown_fdlist);
{
int i;
for (i = MAXCONNECTIONS + 1; i > 0; i--)
default_fdlist.entry[i] = i;
}
#endif
if (portnum < 0)
portnum = PORTNUM;
me.port = portnum;
(void)init_sys();
me.flags = FLAGS_LISTEN;
me.fd = -1;
SetMe(&me);
make_server(&me);
#ifdef HAVE_SYSLOG
openlog("ircd", LOG_PID | LOG_NDELAY, LOG_DAEMON);
#endif
/*
* Put in our info
*/
strncpyzt(me.info, conf_me->info, sizeof(me.info));
strncpyzt(me.name, conf_me->name, sizeof(me.name));
/*
* We accept the first listen record
*/
portnum = conf_listen->port;
/*
* This is completely unneeded-Sts
me.ip.S_ADDR =
*conf_listen->ip != '*' ? inet_addr(conf_listen->ip) : INADDR_ANY;
*/
Debug((DEBUG_ERROR, "Port = %d", portnum));
if (inetport(&me, conf_listen->ip, portnum))
exit(1);
conf_listen->options |= LISTENER_BOUND;
me.umodes = conf_listen->options;
conf_listen->listener = &me;
run_configuration();
botmotd = (aMotd *) read_file(BPATH, &botmotd);
rules = (aMotd *) read_rules(RPATH);
opermotd = (aMotd *) read_file(OPATH, &opermotd);
motd = (aMotd *) read_motd(MPATH);
svsmotd = (aMotd *) read_file(VPATH, &svsmotd);
strncpy(me.sockhost, conf_listen->ip, sizeof(me.sockhost) - 1);
if (me.name[0] == '\0')
strncpyzt(me.name, me.sockhost, sizeof(me.name));
me.hopcount = 0;
me.authfd = -1;
me.next = NULL;
me.user = NULL;
me.from = &me;
me.class = (ConfigItem_class *) conf_listen;
/*
* This listener will never go away
*/
conf_listen->clients++;
me_hash = find_or_add(me.name);
me.serv->up = me_hash;
me.serv->numeric = conf_me->numeric;
add_server_to_table(&me);
timeofday = time(NULL);
me.lasttime = me.since = me.firsttime = TStime();
(void)add_to_client_hash_table(me.name, &me);
#if !defined(_AMIGA) && !defined(_WIN32) && !defined(NO_FORKING)
if (!(bootopt & BOOT_NOFORK))
if (fork())
exit(0);
#endif
(void)ircsprintf(REPORT_DO_DNS, ":%s %s", me.name, BREPORT_DO_DNS);
(void)ircsprintf(REPORT_FIN_DNS, ":%s %s", me.name, BREPORT_FIN_DNS);
(void)ircsprintf(REPORT_FIN_DNSC, ":%s %s", me.name, BREPORT_FIN_DNSC);
(void)ircsprintf(REPORT_FAIL_DNS, ":%s %s", me.name, BREPORT_FAIL_DNS);
(void)ircsprintf(REPORT_DO_ID, ":%s %s", me.name, BREPORT_DO_ID);
(void)ircsprintf(REPORT_FIN_ID, ":%s %s", me.name, BREPORT_FIN_ID);
(void)ircsprintf(REPORT_FAIL_ID, ":%s %s", me.name, BREPORT_FAIL_ID);
R_do_dns = strlen(REPORT_DO_DNS);
R_fin_dns = strlen(REPORT_FIN_DNS);
R_fin_dnsc = strlen(REPORT_FIN_DNSC);
R_fail_dns = strlen(REPORT_FAIL_DNS);
R_do_id = strlen(REPORT_DO_ID);
R_fin_id = strlen(REPORT_FIN_ID);
R_fail_id = strlen(REPORT_FAIL_ID);
write_pidfile();
#if !defined(IRC_UID) && !defined(_WIN32)
if ((uid != euid) && !euid) {
(void)fprintf(stderr,
"ERROR: do not run ircd setuid root. Make it setuid a normal user.\n");
exit(-1);
}
#endif
#if defined(IRC_UID) && defined(IRC_GID)
if ((int)getuid() == 0) {
if ((IRC_UID == 0) || (IRC_GID == 0)) {
(void)fprintf(stderr,
"ERROR: SETUID and SETGID have not been set properly"
"\nPlease read your documentation\n(HINT:SETUID or SETGID can not be 0)\n");
exit(-1);
} else {
/*
* run as a specified user
*/
(void)fprintf(stderr,
"WARNING: ircd invoked as root\n");
(void)fprintf(stderr, " changing to uid %d\n",
IRC_UID);
(void)fprintf(stderr, " changing to gid %d\n",
IRC_GID);
(void)setgid(IRC_GID);
(void)setuid(IRC_UID);
}
}
#endif
Debug((DEBUG_NOTICE, "Server ready..."));
SetupEvents();
loop.do_bancheck = 0;
loop.ircd_booted = 1;
#if defined(HAVE_SETPROCTITLE)
setproctitle("%s", me.name);
#elif defined(HAVE_PSTAT)
pstats.pst_command = me.name;
pstat(PSTAT_SETCMD, pstats, strlen(me.name), 0, 0);
#elif defined(HAVE_PSSTRINGS)
PS_STRINGS->ps_nargvstr = 1;
PS_STRINGS->ps_argvstr = me.name;
#endif
module_loadall(0);
#ifdef STATIC_LINKING
l_commands_Load(0);
#endif
#ifndef NO_FDLIST
check_fdlists(TStime());
#endif
#ifdef _WIN32
return 1;
}
void SocketLoop(void *dummy)
{
TS delay = 0;
static TS lastglinecheck = 0;
TS last_tune;
#ifndef NO_FDLIST
TS nextfdlistcheck = 0; /*end of priority code */
#endif
while (1)
#else
nextping = timeofday;
/*
* Forever drunk .. forever drunk ..
* * (Sorry Alphaville.)
*/
for (;;)
#endif
{
time_t oldtimeofday;
oldtimeofday = timeofday;
timeofday = time(NULL) + TSoffset;
if (timeofday - oldtimeofday < 0) {
sendto_realops("Time running backwards! %i-%i<0",
timeofday, oldtimeofday);
}
LockEventSystem();
DoEvents();
UnlockEventSystem();
/*
* ** Run through the hashes and check lusers every
* ** second
* ** also check for expiring glines
*/
#ifndef NO_FDLIST
lastrecvK = me.receiveK;
lastsendK = me.sendK;
#endif
if (IRCstats.clients > IRCstats.global_max)
IRCstats.global_max = IRCstats.clients;
if (IRCstats.me_clients > IRCstats.me_max)
IRCstats.me_max = IRCstats.me_clients;
/*
* ** We only want to connect if a connection is due,
* ** not every time through. Note, if there are no
* ** active C lines, this call to Tryconnections is
* ** made once only; it will return 0. - avalon
*/
if (nextconnect && timeofday >= nextconnect)
nextconnect = try_connections(timeofday);
/*
* ** DNS checks. One to timeout queries, one for cache expiries.
*/
if (timeofday >= nextdnscheck)
nextdnscheck = timeout_query_list(timeofday);
if (timeofday >= nextexpire)
nextexpire = expire_cache(timeofday);
/*
* ** take the smaller of the two 'timed' event times as
* ** the time of next event (stops us being late :) - avalon
* ** WARNING - nextconnect can return 0!
*/
if (nextconnect)
delay = MIN(nextping, nextconnect);
else
delay = nextping;
delay = MIN(nextdnscheck, delay);
delay = MIN(nextexpire, delay);
delay -= timeofday;
/*
* ** Adjust delay to something reasonable [ad hoc values]
* ** (one might think something more clever here... --msa)
* ** We don't really need to check that often and as long
* ** as we don't delay too long, everything should be ok.
* ** waiting too long can cause things to timeout...
* ** i.e. PINGS -> a disconnection :(
* ** - avalon
*/
if (delay < 1)
delay = 1;
else
delay = MIN(delay, TIMESEC);
#ifdef NO_FDLIST
(void)read_message(delay);
timeofday = time(NULL) + TSoffset;
#else
(void)read_message(0, &serv_fdlist); /* servers */
(void)read_message(1, &busycli_fdlist); /* busy clients */
if (lifesux) {
static time_t alllasttime = 0;
(void)read_message(1, &serv_fdlist);
/*
* read servs more often
*/
if (lifesux > 9) { /* life really sucks */
(void)read_message(1, &busycli_fdlist);
(void)read_message(1, &serv_fdlist);
}
flush_fdlist_connections(&serv_fdlist);
timeofday = time(NULL) + TSoffset;
if ((alllasttime + (lifesux + 1)) > timeofday) {
read_message(delay, NULL); /* check everything */
alllasttime = timeofday;
}
} else {
read_message(delay, NULL); /* check everything */
timeofday = time(NULL) + TSoffset;
}
#endif
/*
* Debug((DEBUG_DEBUG, "Got message(s)"));
*/
/*
* ** ...perhaps should not do these loops every time,
* ** but only if there is some chance of something
* ** happening (but, note that conf->hold times may
* ** be changed elsewhere--so precomputed next event
* ** time might be too far away... (similarly with
* ** ping times) --msa
*/
#ifdef NO_FDLIST
if (timeofday >= nextping || loop.do_bancheck)
#else
if ((timeofday >= nextping && !lifesux) || loop.do_bancheck)
#endif
nextping = check_pings(timeofday);
if (dorehash) {
(void)rehash(&me, &me, 1);
dorehash = 0;
}
/*
* ** Flush output buffers on all connections timeofday if they
* ** have data in them (or at least try to flush)
* ** -avalon
*/
#ifndef NO_FDLIST
/*
* check which clients are active
*/
if (timeofday > nextfdlistcheck)
nextfdlistcheck = check_fdlists(timeofday);
#endif
flush_connections(&me);
}
}
/*
* open_debugfile
*
* If the -t option is not given on the command line when the server is
* started, all debugging output is sent to the file set by LPATH in config.h
* Here we just open that file and make sure it is opened to fd 2 so that
* any fprintf's to stderr also goto the logfile. If the debuglevel is not
* set from the command line by -x, use /dev/null as the dummy logfile as long
* as DEBUGMODE has been defined, else dont waste the fd.
*/
static void open_debugfile(void)
{
#ifdef DEBUGMODE
int fd;
aClient *cptr;
if (debuglevel >= 0) {
cptr = make_client(NULL, NULL);
cptr->fd = 2;
SetLog(cptr);
cptr->port = debuglevel;
cptr->flags = 0;
cptr->listener = cptr;
/*
* local[2] = cptr; winlocal
*/
(void)strlcpy(cptr->sockhost, me.sockhost,
sizeof cptr->sockhost);
# ifndef _WIN32
(void)printf("isatty = %d ttyname = %#x\n",
isatty(2), (u_int)ttyname(2));
if (!(bootopt & BOOT_TTY)) { /* leave debugging output on fd 2 */
(void)truncate(LOGFILE, 0);
if ((fd = open(LOGFILE, O_WRONLY | O_CREAT, 0600)) < 0)
if ((fd = open("/dev/null", O_WRONLY)) < 0)
exit(-1);
if (fd != 2) {
(void)dup2(fd, 2);
(void)close(fd);
}
strncpyzt(cptr->name, LOGFILE, sizeof(cptr->name));
} else if (isatty(2) && ttyname(2))
strncpyzt(cptr->name, ttyname(2), sizeof(cptr->name));
else
# endif
(void)strcpy(cptr->name, "FD2-Pipe");
Debug((DEBUG_FATAL,
"Debug: File <%s> Level: %d at %s", cptr->name,
cptr->port, myctime(time(NULL))));
} else
/*
* local[2] = NULL; winlocal
*/
#endif
return;
}
static void setup_signals()
{
#ifndef _WIN32
#ifdef POSIX_SIGNALS
struct sigaction act;
act.sa_handler = SIG_IGN;
act.sa_flags = 0;
(void)sigemptyset(&act.sa_mask);
(void)sigaddset(&act.sa_mask, SIGPIPE);
(void)sigaddset(&act.sa_mask, SIGALRM);
# ifdef SIGWINCH
(void)sigaddset(&act.sa_mask, SIGWINCH);
(void)sigaction(SIGWINCH, &act, NULL);
# endif
(void)sigaction(SIGPIPE, &act, NULL);
act.sa_handler = dummy;
(void)sigaction(SIGALRM, &act, NULL);
act.sa_handler = s_rehash;
(void)sigemptyset(&act.sa_mask);
(void)sigaddset(&act.sa_mask, SIGHUP);
(void)sigaction(SIGHUP, &act, NULL);
act.sa_handler = s_restart;
(void)sigaddset(&act.sa_mask, SIGINT);
(void)sigaction(SIGINT, &act, NULL);
act.sa_handler = s_die;
(void)sigaddset(&act.sa_mask, SIGTERM);
(void)sigaction(SIGTERM, &act, NULL);
#else
# ifndef HAVE_RELIABLE_SIGNALS
(void)signal(SIGPIPE, dummy);
# ifdef SIGWINCH
(void)signal(SIGWINCH, dummy);
# endif
# else
# ifdef SIGWINCH
(void)signal(SIGWINCH, SIG_IGN);
# endif
(void)signal(SIGPIPE, SIG_IGN);
# endif
(void)signal(SIGALRM, dummy);
(void)signal(SIGHUP, s_rehash);
(void)signal(SIGTERM, s_die);
(void)signal(SIGINT, s_restart);
#endif
#ifdef RESTARTING_SYSTEMCALLS
/*
* ** At least on Apollo sr10.1 it seems continuing system calls
* ** after signal is the default. The following 'siginterrupt'
* ** should change that default to interrupting calls.
*/
(void)siginterrupt(SIGALRM, 1);
#endif
#else
(void)signal(SIGSEGV, CleanUpSegv);
#endif
}
View Git Blame Copy Permalink