/*
* IRC - Internet Relay Chat, ircd/s_serv.c (formerly ircd/s_msg.c)
* Copyright (C) 1990 Jarkko Oikarinen and
* University of Oulu, Computing Center
*
* See file AUTHORS in IRC package for additional names of
* the programmers.
*
* 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.
*
* $Id: s_serv.c 1601 2006-06-04 16:10:04Z sirvulcan $
*/
#include "config.h"
#include "s_serv.h"
#include "IPcheck.h"
#include "channel.h"
#include "client.h"
#include "gline.h"
#include "hash.h"
#include "ircd.h"
#include "ircd_alloc.h"
#include "ircd_reply.h"
#include "ircd_string.h"
#include "ircd_snprintf.h"
#include "ircd_struct.h"
#include "ircd_xopen.h"
#include "jupe.h"
#include "list.h"
#include "map.h"
#include "mark.h"
#include "match.h"
#include "msg.h"
#include "msgq.h"
#include "numeric.h"
#include "numnicks.h"
#include "parse.h"
#include "querycmds.h"
#include "s_bsd.h"
#include "s_conf.h"
#include "s_debug.h"
#include "s_misc.h"
#include "s_user.h"
#include "send.h"
#include "shun.h"
#include "ircd_struct.h"
#include "support.h"
#include "sys.h"
#include "userload.h"
#include <assert.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
unsigned int max_connection_count = 0;
unsigned int max_client_count = 0;
int exit_new_server(struct Client *cptr, struct Client *sptr, const char *host,
time_t timestamp, const char *pattern, ...)
{
struct VarData vd;
int retval = 0;
vd.vd_format = pattern;
va_start(vd.vd_args, pattern);
if (!IsServer(sptr))
retval = vexit_client_msg(cptr, cptr, &me, pattern, vd.vd_args);
else
sendcmdto_one(&me, CMD_SQUIT, cptr, "%s %Tu :%v", host, timestamp, &vd);
va_end(vd.vd_args);
return retval;
}
int a_kills_b_too(struct Client *a, struct Client *b)
{
for (; b != a && b != &me; b = cli_serv(b)->up);
return (a == b ? 1 : 0);
}
/*
* server_estab
*
* May only be called after a SERVER was received from cptr,
* and thus make_server was called, and serv->prot set. --Run
*/
int server_estab(struct Client *cptr, struct ConfItem *aconf)
{
struct Client* acptr = 0;
const char* inpath;
int i;
struct dnsblexempts *dnsblexempts;
assert(0 != cptr);
assert(0 != cli_local(cptr));
inpath = cli_name(cptr);
if (IsUnknown(cptr)) {
if (aconf->passwd[0])
sendrawto_one(cptr, MSG_PASS " :%s", aconf->passwd);
/*
* Pass my info to the new server
*/
sendrawto_one(cptr, MSG_SERVER " %s 1 %Tu %Tu J%s %s%s +%s :%s",
cli_name(&me), cli_serv(&me)->timestamp,
cli_serv(cptr)->timestamp, MAJOR_PROTOCOL, NumServCap(&me),
feature_bool(FEAT_HUB) ? "h" : "",
*(cli_info(&me)) ? cli_info(&me) : "IRCers United");
/*
* Don't charge this IP# for connecting
* XXX - if this comes from a server port, it will not have been added
* to the IP check registry, see add_connection in s_bsd.c
*/
IPcheck_connect_fail(cli_ip(cptr));
}
det_confs_butmask(cptr, CONF_LEAF | CONF_HUB | CONF_SERVER | CONF_UWORLD);
if (!IsHandshake(cptr))
hAddClient(cptr);
SetServer(cptr);
cli_handler(cptr) = SERVER_HANDLER;
Count_unknownbecomesserver(UserStats);
release_dns_reply(cptr);
SetBurst(cptr);
/* nextping = CurrentTime; */
/*
* NOTE: check for acptr->user == cptr->serv->user is necessary to insure
* that we got the same one... bleah
*/
if (cli_serv(cptr)->user && *(cli_serv(cptr))->by &&
(acptr = findNUser(cli_serv(cptr)->by))) {
if (cli_user(acptr) == cli_serv(cptr)->user) {
sendcmdto_one(&me, CMD_NOTICE, acptr, "%C :Link with %s established.",
acptr, inpath);
}
else {
/*
* if not the same client, set by to empty string
*/
acptr = 0;
*(cli_serv(cptr))->by = '\0';
}
}
sendto_opmask_butone(acptr, SNO_OLDSNO, "Link with %s established.", inpath);
cli_serv(cptr)->up = &me;
cli_serv(cptr)->updown = add_dlink(&(cli_serv(&me))->down, cptr);
map_update(cptr);
sendto_opmask_butone(0, SNO_NETWORK, "Net junction: %s %s", cli_name(&me),
cli_name(cptr));
SetJunction(cptr);
/*
* Old sendto_serv_but_one() call removed because we now
* need to send different names to different servers
* (domain name matching) Send new server to other servers.
*/
for (i = 0; i <= HighestFd; i++)
{
if (!(acptr = LocalClientArray[i]) || !IsServer(acptr) ||
acptr == cptr || IsMe(acptr))
continue;
if (!match(cli_name(&me), cli_name(cptr)))
continue;
sendcmdto_one(&me, CMD_SERVER, acptr,
"%s 2 0 %Tu J%02u %s%s +%s%s :%s", cli_name(cptr),
cli_serv(cptr)->timestamp, Protocol(cptr), NumServCap(cptr),
IsHub(cptr) ? "h" : "", IsService(cptr) ? "s" : "",
cli_info(cptr));
}
/* Send these as early as possible so that glined users/juped servers can
* be removed from the network while the remote server is still chewing
* our burst.
*/
gline_burst(cptr);
shun_burst(cptr);
jupe_burst(cptr);
/*
* Pass on my client information to the new server
*
* First, pass only servers (idea is that if the link gets
* cancelled beacause the server was already there,
* there are no NICK's to be cancelled...). Of course,
* if cancellation occurs, all this info is sent anyway,
* and I guess the link dies when a read is attempted...? --msa
*
* Note: Link cancellation to occur at this point means
* that at least two servers from my fragment are building
* up connection this other fragment at the same time, it's
* a race condition, not the normal way of operation...
*/
for (acptr = &me; acptr; acptr = cli_prev(acptr)) {
/* acptr->from == acptr for acptr == cptr */
if (cli_from(acptr) == cptr)
continue;
if (IsServer(acptr)) {
const char* protocol_str;
if (Protocol(acptr) > 9)
protocol_str = IsBurst(acptr) ? "J" : "P";
else
protocol_str = IsBurst(acptr) ? "J0" : "P0";
if (0 == match(cli_name(&me), cli_name(acptr)))
continue;
sendcmdto_one(cli_serv(acptr)->up, CMD_SERVER, cptr,
"%s %d 0 %Tu %s%u %s%s +%s%s :%s", cli_name(acptr),
cli_hopcount(acptr) + 1, cli_serv(acptr)->timestamp,
protocol_str, Protocol(acptr), NumServCap(acptr),
IsHub(acptr) ? "h" : "", IsService(acptr) ? "s" : "",
cli_info(acptr));
}
}
for (dnsblexempts = DNSBLExemptList; dnsblexempts; dnsblexempts = dnsblexempts->next)
sendcmdto_one(&me, CMD_EXEMPT, cptr, "%C +%s %Tu nb", cptr, dnsblexempts->host, dnsblexempts->lastseen);
for (acptr = &me; acptr; acptr = cli_prev(acptr))
{
/* acptr->from == acptr for acptr == cptr */
if (cli_from(acptr) == cptr)
continue;
if (IsUser(acptr))
{
struct SLink *lp, **lpp;
char xxx_buf[8];
char *s = umode_str(acptr);
sendcmdto_one(cli_user(acptr)->server, CMD_NICK, cptr,
"%s %d %Tu %s %s %s%s%s%s %s%s :%s",
cli_name(acptr), cli_hopcount(acptr) + 1, cli_lastnick(acptr),
cli_user(acptr)->realusername, cli_user(acptr)->realhost,
*s ? "+" : "", s, *s ? " " : "",
inttobase64(xxx_buf, ntohl(cli_ip(acptr).s_addr), 6),
NumNick(acptr), cli_info(acptr));
if (cli_user(acptr)->away)
sendcmdto_one(acptr, CMD_AWAY, cptr, ":%s", cli_user(acptr)->away);
if (cli_user(acptr)->swhois)
sendcmdto_one(cli_user(acptr)->server, CMD_SWHOIS, cptr,
"%C :%s", acptr, cli_user(acptr)->swhois);
if (IsDNSBLMarked(acptr)) /* Burst even if dnsbl is disabled */
{
struct SLink* lp;
char* dnsblhost = cli_user(acptr)->dnsblhost;
if(!dnsblhost[0])
dnsblhost = "notmarked";
sendcmdto_one(cli_user(acptr)->server, CMD_MARK, cptr, "%s %s ma %s", cli_name(acptr), MARK_DNSBL,
dnsblhost);
for (lp = cli_sdnsbls(acptr); lp; lp = lp->next)
sendcmdto_one(cli_user(acptr)->server, CMD_MARK, cptr, "%s %s %s", cli_name(acptr),
MARK_DNSBL_DATA, lp->value.cp);
}
for (lpp = &(cli_user(acptr))->silence, lp = *lpp; lp;) {
sendcmdto_one(cli_user(acptr)->server, CMD_SILENCE, cptr, "%C +%s", acptr, lp->value.cp);
lpp = &lp->next;
lp = *lpp;
}
}
}
/*
* Last, send the BURST.
* (Or for 2.9 servers: pass all channels plus statuses)
*/
{
struct Channel *chptr;
for (chptr = GlobalChannelList; chptr; chptr = chptr->next)
send_channel_modes(cptr, chptr);
}
sendcmdto_one(&me, CMD_END_OF_BURST, cptr, "");
return 0;
}
/*
* m_randquote
* - Ported from Ultimate IRCd
*/
int m_randquote(struct Client *cptr, struct Client *sptr, int parc, char *parv[]) {
int fd, linenum=0, randnum;
char line[300];
char *tmp;
char qfile[1024];
ircd_snprintf(0, qfile, sizeof(qfile), "%s/%s", DPATH,
feature_str(FEAT_QPATH));
fd = open(qfile, O_RDONLY);
if (fd == -1)
return 0;
dgets(-1, NULL, 0);
while (dgets(fd, line, sizeof(line)-1) > 0) {
if ((tmp = (char *)index(line,'\n')))
*tmp = '\0';
if ((tmp = (char *)index(line,'\r')))
*tmp = '\0';
linenum++;
}
/* We have an empty file.. bail */
if (linenum == 0)
return 0;
/* srand(CurrentTime+getpid()+rand() % 9999); */
srandom(CurrentTime); /* may not be the BEST salt, but its close */
randnum = (random() % linenum)-1;
close(fd);
alarm(3);
fd = open(qfile, O_RDONLY);
linenum = 0;
while (dgets(fd, line, sizeof(line)-1) > 0) {
if ((tmp = (char *)index(line,'\n')))
*tmp = '\0';
if ((tmp = (char *)index(line,'\r')))
*tmp = '\0';
linenum++;
if (linenum==randnum)
break;
}
if (line != NULL)
sendcmdto_one(&me, CMD_NOTICE, sptr, "%C \2Quote:\2 %s", sptr, line);
return close(fd);
}
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