mirror of
https://github.com/matrix-construct/construct
synced 2024-08-20 00:24:44 +02:00
1276 lines
34 KiB
C
1276 lines
34 KiB
C
/*
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* ircd-ratbox: A slightly useful ircd.
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* s_serv.c: Server related functions.
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*
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* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2005 ircd-ratbox development team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*
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* $Id: s_serv.c 3550 2007-08-09 06:47:26Z nenolod $
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*/
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#include "stdinc.h"
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#ifdef HAVE_LIBCRYPTO
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#include <openssl/rsa.h>
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#endif
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#include "s_serv.h"
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#include "class.h"
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#include "client.h"
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#include "common.h"
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#include "hash.h"
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#include "match.h"
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#include "ircd.h"
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#include "ircd_defs.h"
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#include "numeric.h"
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#include "packet.h"
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#include "s_conf.h"
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#include "s_newconf.h"
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#include "logger.h"
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#include "s_stats.h"
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#include "s_user.h"
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#include "scache.h"
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#include "send.h"
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#include "client.h"
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#include "channel.h" /* chcap_usage_counts stuff... */
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#include "hook.h"
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#include "msg.h"
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#include "reject.h"
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#include "sslproc.h"
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#include "capability.h"
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#include "s_assert.h"
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#ifndef INADDR_NONE
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#define INADDR_NONE ((unsigned int) 0xffffffff)
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#endif
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int MaxConnectionCount = 1;
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int MaxClientCount = 1;
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int refresh_user_links = 0;
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static char buf[BUFSIZE];
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/*
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* list of recognized server capabilities. "TS" is not on the list
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* because all servers that we talk to already do TS, and the kludged
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* extra argument to "PASS" takes care of checking that. -orabidoo
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*/
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struct CapabilityIndex *serv_capindex = NULL;
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unsigned int CAP_CAP;
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unsigned int CAP_QS;
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unsigned int CAP_EX;
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unsigned int CAP_CHW;
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unsigned int CAP_IE;
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unsigned int CAP_KLN;
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unsigned int CAP_ZIP;
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unsigned int CAP_KNOCK;
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unsigned int CAP_TB;
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unsigned int CAP_UNKLN;
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unsigned int CAP_CLUSTER;
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unsigned int CAP_ENCAP;
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unsigned int CAP_TS6;
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unsigned int CAP_SERVICE;
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unsigned int CAP_RSFNC;
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unsigned int CAP_SAVE;
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unsigned int CAP_EUID;
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unsigned int CAP_EOPMOD;
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unsigned int CAP_BAN;
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unsigned int CAP_MLOCK;
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/*
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* initialize our builtin capability table. --nenolod
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*/
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void
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init_builtin_capabs(void)
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{
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serv_capindex = capability_index_create("server capabilities");
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/* These two are not set via CAPAB/GCAP keywords. */
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CAP_CAP = capability_put_anonymous(serv_capindex);
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CAP_TS6 = capability_put_anonymous(serv_capindex);
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CAP_QS = capability_put(serv_capindex, "QS");
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CAP_EX = capability_put(serv_capindex, "EX");
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CAP_CHW = capability_put(serv_capindex, "CHW");
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CAP_IE = capability_put(serv_capindex, "IE");
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CAP_KLN = capability_put(serv_capindex, "KLN");
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CAP_KNOCK = capability_put(serv_capindex, "KNOCK");
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CAP_ZIP = capability_put(serv_capindex, "ZIP");
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CAP_TB = capability_put(serv_capindex, "TB");
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CAP_UNKLN = capability_put(serv_capindex, "UNKLN");
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CAP_CLUSTER = capability_put(serv_capindex, "CLUSTER");
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CAP_ENCAP = capability_put(serv_capindex, "ENCAP");
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CAP_SERVICE = capability_put(serv_capindex, "SERVICES");
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CAP_RSFNC = capability_put(serv_capindex, "RSFNC");
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CAP_SAVE = capability_put(serv_capindex, "SAVE");
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CAP_EUID = capability_put(serv_capindex, "EUID");
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CAP_EOPMOD = capability_put(serv_capindex, "EOPMOD");
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CAP_BAN = capability_put(serv_capindex, "BAN");
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CAP_MLOCK = capability_put(serv_capindex, "MLOCK");
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capability_require(serv_capindex, "QS");
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capability_require(serv_capindex, "EX");
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capability_require(serv_capindex, "IE");
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capability_require(serv_capindex, "ENCAP");
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}
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static CNCB serv_connect_callback;
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static CNCB serv_connect_ssl_callback;
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/*
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* hunt_server - Do the basic thing in delivering the message (command)
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* across the relays to the specific server (server) for
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* actions.
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*
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* Note: The command is a format string and *MUST* be
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* of prefixed style (e.g. ":%s COMMAND %s ...").
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* Command can have only max 8 parameters.
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*
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* server parv[server] is the parameter identifying the
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* target server.
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*
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* *WARNING*
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* parv[server] is replaced with the pointer to the
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* real servername from the matched client (I'm lazy
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* now --msa).
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*
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* returns: (see #defines)
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*/
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int
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hunt_server(struct Client *client_p, struct Client *source_p,
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const char *command, int server, int parc, const char *parv[])
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{
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struct Client *target_p;
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int wilds;
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rb_dlink_node *ptr;
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const char *old;
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char *new;
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/*
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* Assume it's me, if no server
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*/
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if(parc <= server || EmptyString(parv[server]) ||
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match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0))
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return (HUNTED_ISME);
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new = LOCAL_COPY(parv[server]);
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/*
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* These are to pickup matches that would cause the following
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* message to go in the wrong direction while doing quick fast
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* non-matching lookups.
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*/
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if(MyClient(source_p))
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target_p = find_named_client(new);
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else
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target_p = find_client(new);
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if(target_p)
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if(target_p->from == source_p->from && !MyConnect(target_p))
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target_p = NULL;
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collapse(new);
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wilds = (strchr(new, '?') || strchr(new, '*'));
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/*
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* Again, if there are no wild cards involved in the server
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* name, use the hash lookup
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*/
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if(!target_p && wilds)
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{
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RB_DLINK_FOREACH(ptr, global_serv_list.head)
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{
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if(match(new, ((struct Client *) (ptr->data))->name))
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{
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target_p = ptr->data;
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break;
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}
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}
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}
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if(target_p && !IsRegistered(target_p))
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target_p = NULL;
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if(target_p)
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{
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if(IsMe(target_p) || MyClient(target_p))
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return HUNTED_ISME;
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old = parv[server];
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parv[server] = get_id(target_p, target_p);
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sendto_one(target_p, command, get_id(source_p, target_p),
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parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]);
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parv[server] = old;
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return (HUNTED_PASS);
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}
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if(MyClient(source_p) || !IsDigit(parv[server][0]))
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sendto_one_numeric(source_p, ERR_NOSUCHSERVER,
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form_str(ERR_NOSUCHSERVER), parv[server]);
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return (HUNTED_NOSUCH);
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}
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/*
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* try_connections - scan through configuration and try new connections.
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* Returns the calendar time when the next call to this
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* function should be made latest. (No harm done if this
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* is called earlier or later...)
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*/
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void
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try_connections(void *unused)
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{
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struct Client *client_p;
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struct server_conf *server_p = NULL;
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struct server_conf *tmp_p;
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struct Class *cltmp;
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rb_dlink_node *ptr;
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int connecting = FALSE;
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int confrq = 0;
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time_t next = 0;
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RB_DLINK_FOREACH(ptr, server_conf_list.head)
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{
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tmp_p = ptr->data;
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if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p))
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continue;
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/* don't allow ssl connections if ssl isn't setup */
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if(ServerConfSSL(tmp_p) && (!ssl_ok || !get_ssld_count()))
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continue;
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cltmp = tmp_p->class;
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/*
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* Skip this entry if the use of it is still on hold until
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* future. Otherwise handle this entry (and set it on hold
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* until next time). Will reset only hold times, if already
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* made one successfull connection... [this algorithm is
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* a bit fuzzy... -- msa >;) ]
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*/
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if(tmp_p->hold > rb_current_time())
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{
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if(next > tmp_p->hold || next == 0)
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next = tmp_p->hold;
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continue;
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}
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confrq = get_con_freq(cltmp);
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tmp_p->hold = rb_current_time() + confrq;
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/*
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* Found a CONNECT config with port specified, scan clients
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* and see if this server is already connected?
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*/
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client_p = find_server(NULL, tmp_p->name);
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if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting)
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{
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server_p = tmp_p;
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/* We connect only one at time... */
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connecting = TRUE;
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}
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if((next > tmp_p->hold) || (next == 0))
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next = tmp_p->hold;
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}
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/* TODO: change this to set active flag to 0 when added to event! --Habeeb */
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if(GlobalSetOptions.autoconn == 0)
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return;
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if(!connecting)
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return;
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/* move this connect entry to end.. */
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rb_dlinkDelete(&server_p->node, &server_conf_list);
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rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list);
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/*
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* We used to only print this if serv_connect() actually
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* suceeded, but since rb_tcp_connect() can call the callback
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* immediately if there is an error, we were getting error messages
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* in the wrong order. SO, we just print out the activated line,
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* and let serv_connect() / serv_connect_callback() print an
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* error afterwards if it fails.
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* -- adrian
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*/
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sendto_realops_snomask(SNO_GENERAL, L_ALL,
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"Connection to %s activated",
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server_p->name);
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serv_connect(server_p, 0);
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}
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int
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check_server(const char *name, struct Client *client_p)
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{
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struct server_conf *server_p = NULL;
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struct server_conf *tmp_p;
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rb_dlink_node *ptr;
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int error = -1;
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const char *encr;
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s_assert(NULL != client_p);
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if(client_p == NULL)
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return error;
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if(!(client_p->localClient->passwd))
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return -2;
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if(strlen(name) > HOSTLEN)
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return -4;
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RB_DLINK_FOREACH(ptr, server_conf_list.head)
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{
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tmp_p = ptr->data;
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if(ServerConfIllegal(tmp_p))
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continue;
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if(!match(tmp_p->name, name))
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continue;
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error = -3;
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/* XXX: Fix me for IPv6 */
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/* XXX sockhost is the IPv4 ip as a string */
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if(match(tmp_p->host, client_p->host) ||
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match(tmp_p->host, client_p->sockhost))
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{
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error = -2;
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if(tmp_p->passwd)
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{
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if(ServerConfEncrypted(tmp_p))
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{
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encr = rb_crypt(client_p->localClient->passwd,
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tmp_p->passwd);
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if(encr != NULL && !strcmp(tmp_p->passwd, encr))
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{
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server_p = tmp_p;
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break;
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}
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else
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continue;
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}
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else if(strcmp(tmp_p->passwd, client_p->localClient->passwd))
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continue;
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}
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if(tmp_p->certfp)
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{
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if(!client_p->certfp || strcasecmp(tmp_p->certfp, client_p->certfp) != 0)
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continue;
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}
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server_p = tmp_p;
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break;
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}
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}
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if(server_p == NULL)
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return error;
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if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL)
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{
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return -5;
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}
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attach_server_conf(client_p, server_p);
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/* clear ZIP/TB if they support but we dont want them */
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#ifdef HAVE_LIBZ
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if(!ServerConfCompressed(server_p))
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#endif
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ClearCap(client_p, CAP_ZIP);
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if(!ServerConfTb(server_p))
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ClearCap(client_p, CAP_TB);
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return 0;
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}
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/*
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* send_capabilities
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*
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* inputs - Client pointer to send to
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* - int flag of capabilities that this server has
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* output - NONE
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* side effects - send the CAPAB line to a server -orabidoo
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*
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*/
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void
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send_capabilities(struct Client *client_p, unsigned int cap_can_send)
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{
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sendto_one(client_p, "CAPAB :%s", capability_index_list(serv_capindex, cap_can_send));
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}
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static void
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burst_ban(struct Client *client_p)
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{
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rb_dlink_node *ptr;
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struct ConfItem *aconf;
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const char *type, *oper;
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/* +5 for !,@,{,} and null */
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char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5];
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char *p;
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size_t melen;
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melen = strlen(me.name);
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RB_DLINK_FOREACH(ptr, prop_bans.head)
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{
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aconf = ptr->data;
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/* Skip expired stuff. */
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if(aconf->lifetime < rb_current_time())
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continue;
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switch(aconf->status & ~CONF_ILLEGAL)
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{
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case CONF_KILL: type = "K"; break;
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case CONF_DLINE: type = "D"; break;
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case CONF_XLINE: type = "X"; break;
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case CONF_RESV_NICK: type = "R"; break;
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case CONF_RESV_CHANNEL: type = "R"; break;
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default:
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continue;
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}
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oper = aconf->info.oper;
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if(aconf->flags & CONF_FLAGS_MYOPER)
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{
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/* Our operator{} names may not be meaningful
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* to other servers, so rewrite to our server
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* name.
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*/
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rb_strlcpy(operbuf, aconf->info.oper, sizeof buf);
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p = strrchr(operbuf, '{');
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if (p != NULL &&
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operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2))
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{
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memcpy(p + 1, me.name, melen);
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p[melen + 1] = '}';
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p[melen + 2] = '\0';
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oper = operbuf;
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}
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}
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sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
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me.id,
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type,
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aconf->user ? aconf->user : "*", aconf->host,
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(unsigned long)aconf->created,
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(int)(aconf->hold - aconf->created),
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(int)(aconf->lifetime - aconf->created),
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oper,
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aconf->passwd,
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aconf->spasswd ? "|" : "",
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aconf->spasswd ? aconf->spasswd : "");
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}
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}
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/* burst_modes_TS6()
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*
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* input - client to burst to, channel name, list to burst, mode flag
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* output -
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* side effects - client is sent a list of +b, +e, or +I modes
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*/
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static void
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burst_modes_TS6(struct Client *client_p, struct Channel *chptr,
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rb_dlink_list *list, char flag)
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{
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rb_dlink_node *ptr;
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struct Ban *banptr;
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char *t;
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int tlen;
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int mlen;
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int cur_len;
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cur_len = mlen = rb_sprintf(buf, ":%s BMASK %ld %s %c :",
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me.id, (long) chptr->channelts, chptr->chname, flag);
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t = buf + mlen;
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RB_DLINK_FOREACH(ptr, list->head)
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{
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banptr = ptr->data;
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tlen = strlen(banptr->banstr) + (banptr->forward ? strlen(banptr->forward) + 1 : 0) + 1;
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|
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/* uh oh */
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if(cur_len + tlen > BUFSIZE - 3)
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{
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/* the one we're trying to send doesnt fit at all! */
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|
if(cur_len == mlen)
|
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{
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s_assert(0);
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continue;
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}
|
|
|
|
/* chop off trailing space and send.. */
|
|
*(t-1) = '\0';
|
|
sendto_one(client_p, "%s", buf);
|
|
cur_len = mlen;
|
|
t = buf + mlen;
|
|
}
|
|
|
|
if (banptr->forward)
|
|
rb_sprintf(t, "%s$%s ", banptr->banstr, banptr->forward);
|
|
else
|
|
rb_sprintf(t, "%s ", banptr->banstr);
|
|
t += tlen;
|
|
cur_len += tlen;
|
|
}
|
|
|
|
/* cant ever exit the loop above without having modified buf,
|
|
* chop off trailing space and send.
|
|
*/
|
|
*(t-1) = '\0';
|
|
sendto_one(client_p, "%s", buf);
|
|
}
|
|
|
|
/*
|
|
* burst_TS6
|
|
*
|
|
* inputs - client (server) to send nick towards
|
|
* - client to send nick for
|
|
* output - NONE
|
|
* side effects - NICK message is sent towards given client_p
|
|
*/
|
|
static void
|
|
burst_TS6(struct Client *client_p)
|
|
{
|
|
char ubuf[BUFSIZE];
|
|
struct Client *target_p;
|
|
struct Channel *chptr;
|
|
struct membership *msptr;
|
|
hook_data_client hclientinfo;
|
|
hook_data_channel hchaninfo;
|
|
rb_dlink_node *ptr;
|
|
rb_dlink_node *uptr;
|
|
char *t;
|
|
int tlen, mlen;
|
|
int cur_len = 0;
|
|
|
|
hclientinfo.client = hchaninfo.client = client_p;
|
|
|
|
RB_DLINK_FOREACH(ptr, global_client_list.head)
|
|
{
|
|
target_p = ptr->data;
|
|
|
|
if(!IsPerson(target_p))
|
|
continue;
|
|
|
|
send_umode(NULL, target_p, 0, ubuf);
|
|
if(!*ubuf)
|
|
{
|
|
ubuf[0] = '+';
|
|
ubuf[1] = '\0';
|
|
}
|
|
|
|
if(IsCapable(client_p, CAP_EUID))
|
|
sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s",
|
|
target_p->servptr->id, target_p->name,
|
|
target_p->hopcount + 1,
|
|
(long) target_p->tsinfo, ubuf,
|
|
target_p->username, target_p->host,
|
|
IsIPSpoof(target_p) ? "0" : target_p->sockhost,
|
|
target_p->id,
|
|
IsDynSpoof(target_p) ? target_p->orighost : "*",
|
|
EmptyString(target_p->user->suser) ? "*" : target_p->user->suser,
|
|
target_p->info);
|
|
else
|
|
sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s",
|
|
target_p->servptr->id, target_p->name,
|
|
target_p->hopcount + 1,
|
|
(long) target_p->tsinfo, ubuf,
|
|
target_p->username, target_p->host,
|
|
IsIPSpoof(target_p) ? "0" : target_p->sockhost,
|
|
target_p->id, target_p->info);
|
|
|
|
if(!EmptyString(target_p->certfp))
|
|
sendto_one(client_p, ":%s ENCAP * CERTFP :%s",
|
|
use_id(target_p), target_p->certfp);
|
|
|
|
if(!IsCapable(client_p, CAP_EUID))
|
|
{
|
|
if(IsDynSpoof(target_p))
|
|
sendto_one(client_p, ":%s ENCAP * REALHOST %s",
|
|
use_id(target_p), target_p->orighost);
|
|
if(!EmptyString(target_p->user->suser))
|
|
sendto_one(client_p, ":%s ENCAP * LOGIN %s",
|
|
use_id(target_p), target_p->user->suser);
|
|
}
|
|
|
|
if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away))
|
|
sendto_one(client_p, ":%s AWAY :%s",
|
|
use_id(target_p),
|
|
target_p->user->away);
|
|
|
|
hclientinfo.target = target_p;
|
|
call_hook(h_burst_client, &hclientinfo);
|
|
}
|
|
|
|
RB_DLINK_FOREACH(ptr, global_channel_list.head)
|
|
{
|
|
chptr = ptr->data;
|
|
|
|
if(*chptr->chname != '#')
|
|
continue;
|
|
|
|
cur_len = mlen = rb_sprintf(buf, ":%s SJOIN %ld %s %s :", me.id,
|
|
(long) chptr->channelts, chptr->chname,
|
|
channel_modes(chptr, client_p));
|
|
|
|
t = buf + mlen;
|
|
|
|
RB_DLINK_FOREACH(uptr, chptr->members.head)
|
|
{
|
|
msptr = uptr->data;
|
|
|
|
tlen = strlen(use_id(msptr->client_p)) + 1;
|
|
if(is_chanop(msptr))
|
|
tlen++;
|
|
if(is_voiced(msptr))
|
|
tlen++;
|
|
|
|
if(cur_len + tlen >= BUFSIZE - 3)
|
|
{
|
|
*(t-1) = '\0';
|
|
sendto_one(client_p, "%s", buf);
|
|
cur_len = mlen;
|
|
t = buf + mlen;
|
|
}
|
|
|
|
rb_sprintf(t, "%s%s ", find_channel_status(msptr, 1),
|
|
use_id(msptr->client_p));
|
|
|
|
cur_len += tlen;
|
|
t += tlen;
|
|
}
|
|
|
|
if (rb_dlink_list_length(&chptr->members) > 0)
|
|
{
|
|
/* remove trailing space */
|
|
*(t-1) = '\0';
|
|
}
|
|
sendto_one(client_p, "%s", buf);
|
|
|
|
if(rb_dlink_list_length(&chptr->banlist) > 0)
|
|
burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b');
|
|
|
|
if(IsCapable(client_p, CAP_EX) &&
|
|
rb_dlink_list_length(&chptr->exceptlist) > 0)
|
|
burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e');
|
|
|
|
if(IsCapable(client_p, CAP_IE) &&
|
|
rb_dlink_list_length(&chptr->invexlist) > 0)
|
|
burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I');
|
|
|
|
if(rb_dlink_list_length(&chptr->quietlist) > 0)
|
|
burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q');
|
|
|
|
if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL)
|
|
sendto_one(client_p, ":%s TB %s %ld %s%s:%s",
|
|
me.id, chptr->chname, (long) chptr->topic_time,
|
|
ConfigChannel.burst_topicwho ? chptr->topic_info : "",
|
|
ConfigChannel.burst_topicwho ? " " : "",
|
|
chptr->topic);
|
|
|
|
if(IsCapable(client_p, CAP_MLOCK))
|
|
sendto_one(client_p, ":%s MLOCK %ld %s :%s",
|
|
me.id, (long) chptr->channelts, chptr->chname,
|
|
EmptyString(chptr->mode_lock) ? "" : chptr->mode_lock);
|
|
|
|
hchaninfo.chptr = chptr;
|
|
call_hook(h_burst_channel, &hchaninfo);
|
|
}
|
|
|
|
hclientinfo.target = NULL;
|
|
call_hook(h_burst_finished, &hclientinfo);
|
|
}
|
|
|
|
/*
|
|
* show_capabilities - show current server capabilities
|
|
*
|
|
* inputs - pointer to an struct Client
|
|
* output - pointer to static string
|
|
* side effects - build up string representing capabilities of server listed
|
|
*/
|
|
const char *
|
|
show_capabilities(struct Client *target_p)
|
|
{
|
|
static char msgbuf[BUFSIZE];
|
|
|
|
*msgbuf = '\0';
|
|
|
|
if(has_id(target_p))
|
|
rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf));
|
|
|
|
if(IsSSL(target_p))
|
|
rb_strlcat(msgbuf, " SSL", sizeof(msgbuf));
|
|
|
|
if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */
|
|
return msgbuf + 1;
|
|
|
|
rb_strlcat(msgbuf, " ", sizeof(msgbuf));
|
|
rb_strlcat(msgbuf, capability_index_list(serv_capindex, target_p->serv->caps), sizeof(msgbuf));
|
|
|
|
return msgbuf + 1;
|
|
}
|
|
|
|
/*
|
|
* server_estab
|
|
*
|
|
* inputs - pointer to a struct Client
|
|
* output -
|
|
* side effects -
|
|
*/
|
|
int
|
|
server_estab(struct Client *client_p)
|
|
{
|
|
struct Client *target_p;
|
|
struct server_conf *server_p;
|
|
hook_data_client hdata;
|
|
char *host;
|
|
rb_dlink_node *ptr;
|
|
char note[HOSTLEN + 15];
|
|
|
|
s_assert(NULL != client_p);
|
|
if(client_p == NULL)
|
|
return -1;
|
|
|
|
host = client_p->name;
|
|
|
|
if((server_p = client_p->localClient->att_sconf) == NULL)
|
|
{
|
|
/* This shouldn't happen, better tell the ops... -A1kmm */
|
|
sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL,
|
|
"Warning: Lost connect{} block for server %s!", host);
|
|
return exit_client(client_p, client_p, client_p, "Lost connect{} block!");
|
|
}
|
|
|
|
/* We shouldn't have to check this, it should already done before
|
|
* server_estab is called. -A1kmm
|
|
*/
|
|
if(client_p->localClient->passwd)
|
|
{
|
|
memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd));
|
|
rb_free(client_p->localClient->passwd);
|
|
client_p->localClient->passwd = NULL;
|
|
}
|
|
|
|
/* Its got identd , since its a server */
|
|
SetGotId(client_p);
|
|
|
|
/* If there is something in the serv_list, it might be this
|
|
* connecting server..
|
|
*/
|
|
if(!ServerInfo.hub && serv_list.head)
|
|
{
|
|
if(client_p != serv_list.head->data || serv_list.head->next)
|
|
{
|
|
ServerStats.is_ref++;
|
|
sendto_one(client_p, "ERROR :I'm a leaf not a hub");
|
|
return exit_client(client_p, client_p, client_p, "I'm a leaf");
|
|
}
|
|
}
|
|
|
|
if(IsUnknown(client_p))
|
|
{
|
|
/* the server may be linking based on certificate fingerprint now. --nenolod */
|
|
sendto_one(client_p, "PASS %s TS %d :%s",
|
|
EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id);
|
|
|
|
/* pass info to new server */
|
|
send_capabilities(client_p, default_server_capabs
|
|
| (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0)
|
|
| (ServerConfTb(server_p) ? CAP_TB : 0));
|
|
|
|
sendto_one(client_p, "SERVER %s 1 :%s%s",
|
|
me.name,
|
|
ConfigServerHide.hidden ? "(H) " : "",
|
|
(me.info[0]) ? (me.info) : "IRCers United");
|
|
}
|
|
|
|
if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE))
|
|
ilog_error("rb_set_buffers failed for server");
|
|
|
|
/* Enable compression now */
|
|
if(IsCapable(client_p, CAP_ZIP))
|
|
{
|
|
start_zlib_session(client_p);
|
|
}
|
|
sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time());
|
|
|
|
client_p->servptr = &me;
|
|
|
|
if(IsAnyDead(client_p))
|
|
return CLIENT_EXITED;
|
|
|
|
SetServer(client_p);
|
|
|
|
rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers);
|
|
rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list);
|
|
rb_dlinkAddTailAlloc(client_p, &global_serv_list);
|
|
|
|
if(has_id(client_p))
|
|
add_to_id_hash(client_p->id, client_p);
|
|
|
|
add_to_client_hash(client_p->name, client_p);
|
|
/* doesnt duplicate client_p->serv if allocated this struct already */
|
|
make_server(client_p);
|
|
|
|
client_p->serv->caps = client_p->localClient->caps;
|
|
|
|
if(client_p->localClient->fullcaps)
|
|
{
|
|
client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps);
|
|
rb_free(client_p->localClient->fullcaps);
|
|
client_p->localClient->fullcaps = NULL;
|
|
}
|
|
|
|
client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p));
|
|
client_p->localClient->firsttime = rb_current_time();
|
|
/* fixing eob timings.. -gnp */
|
|
|
|
if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) >
|
|
(unsigned long)MaxConnectionCount)
|
|
MaxConnectionCount = rb_dlink_list_length(&lclient_list) +
|
|
rb_dlink_list_length(&serv_list);
|
|
|
|
/* Show the real host/IP to admins */
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"Link with %s established: (%s) link",
|
|
client_p->name,
|
|
show_capabilities(client_p));
|
|
|
|
ilog(L_SERVER, "Link with %s established: (%s) link",
|
|
log_client_name(client_p, SHOW_IP), show_capabilities(client_p));
|
|
|
|
hdata.client = &me;
|
|
hdata.target = client_p;
|
|
call_hook(h_server_introduced, &hdata);
|
|
|
|
rb_snprintf(note, sizeof(note), "Server: %s", client_p->name);
|
|
rb_note(client_p->localClient->F, note);
|
|
|
|
/*
|
|
** 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.
|
|
*/
|
|
RB_DLINK_FOREACH(ptr, serv_list.head)
|
|
{
|
|
target_p = ptr->data;
|
|
|
|
if(target_p == client_p)
|
|
continue;
|
|
|
|
if(has_id(target_p) && has_id(client_p))
|
|
{
|
|
sendto_one(target_p, ":%s SID %s 2 %s :%s%s",
|
|
me.id, client_p->name, client_p->id,
|
|
IsHidden(client_p) ? "(H) " : "", client_p->info);
|
|
|
|
if(!EmptyString(client_p->serv->fullcaps))
|
|
sendto_one(target_p, ":%s ENCAP * GCAP :%s",
|
|
client_p->id, client_p->serv->fullcaps);
|
|
}
|
|
else
|
|
{
|
|
sendto_one(target_p, ":%s SERVER %s 2 :%s%s",
|
|
me.name, client_p->name,
|
|
IsHidden(client_p) ? "(H) " : "", client_p->info);
|
|
|
|
if(!EmptyString(client_p->serv->fullcaps))
|
|
sendto_one(target_p, ":%s ENCAP * GCAP :%s",
|
|
client_p->name, client_p->serv->fullcaps);
|
|
}
|
|
}
|
|
|
|
/*
|
|
** 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...
|
|
**
|
|
** ALSO NOTE: using the get_client_name for server names--
|
|
** see previous *WARNING*!!! (Also, original inpath
|
|
** is destroyed...)
|
|
*/
|
|
RB_DLINK_FOREACH(ptr, global_serv_list.head)
|
|
{
|
|
target_p = ptr->data;
|
|
|
|
/* target_p->from == target_p for target_p == client_p */
|
|
if(IsMe(target_p) || target_p->from == client_p)
|
|
continue;
|
|
|
|
/* presumption, if target has an id, so does its uplink */
|
|
if(has_id(client_p) && has_id(target_p))
|
|
sendto_one(client_p, ":%s SID %s %d %s :%s%s",
|
|
target_p->servptr->id, target_p->name,
|
|
target_p->hopcount + 1, target_p->id,
|
|
IsHidden(target_p) ? "(H) " : "", target_p->info);
|
|
else
|
|
sendto_one(client_p, ":%s SERVER %s %d :%s%s",
|
|
target_p->servptr->name,
|
|
target_p->name, target_p->hopcount + 1,
|
|
IsHidden(target_p) ? "(H) " : "", target_p->info);
|
|
|
|
if(!EmptyString(target_p->serv->fullcaps))
|
|
sendto_one(client_p, ":%s ENCAP * GCAP :%s",
|
|
get_id(target_p, client_p),
|
|
target_p->serv->fullcaps);
|
|
}
|
|
|
|
if(IsCapable(client_p, CAP_BAN))
|
|
burst_ban(client_p);
|
|
|
|
burst_TS6(client_p);
|
|
|
|
/* Always send a PING after connect burst is done */
|
|
sendto_one(client_p, "PING :%s", get_id(&me, client_p));
|
|
|
|
free_pre_client(client_p);
|
|
|
|
send_pop_queue(client_p);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* New server connection code
|
|
* Based upon the stuff floating about in s_bsd.c
|
|
* -- adrian
|
|
*/
|
|
|
|
/*
|
|
* serv_connect() - initiate a server connection
|
|
*
|
|
* inputs - pointer to conf
|
|
* - pointer to client doing the connet
|
|
* output -
|
|
* side effects -
|
|
*
|
|
* This code initiates a connection to a server. It first checks to make
|
|
* sure the given server exists. If this is the case, it creates a socket,
|
|
* creates a client, saves the socket information in the client, and
|
|
* initiates a connection to the server through rb_connect_tcp(). The
|
|
* completion of this goes through serv_completed_connection().
|
|
*
|
|
* We return 1 if the connection is attempted, since we don't know whether
|
|
* it suceeded or not, and 0 if it fails in here somewhere.
|
|
*/
|
|
int
|
|
serv_connect(struct server_conf *server_p, struct Client *by)
|
|
{
|
|
struct Client *client_p;
|
|
struct rb_sockaddr_storage myipnum;
|
|
char note[HOSTLEN + 10];
|
|
rb_fde_t *F;
|
|
|
|
s_assert(server_p != NULL);
|
|
if(server_p == NULL)
|
|
return 0;
|
|
|
|
/* log */
|
|
rb_inet_ntop_sock((struct sockaddr *)&server_p->my_ipnum, buf, sizeof(buf));
|
|
ilog(L_SERVER, "Connect to *[%s] @%s", server_p->name, buf);
|
|
|
|
/*
|
|
* Make sure this server isn't already connected
|
|
*/
|
|
if((client_p = find_server(NULL, server_p->name)))
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, L_ALL,
|
|
"Server %s already present from %s",
|
|
server_p->name, client_p->name);
|
|
if(by && IsPerson(by) && !MyClient(by))
|
|
sendto_one_notice(by, ":Server %s already present from %s",
|
|
server_p->name, client_p->name);
|
|
return 0;
|
|
}
|
|
|
|
/* create a socket for the server connection */
|
|
if((F = rb_socket(GET_SS_FAMILY(&server_p->my_ipnum), SOCK_STREAM, 0, NULL)) == NULL)
|
|
{
|
|
ilog_error("opening a stream socket");
|
|
return 0;
|
|
}
|
|
|
|
/* servernames are always guaranteed under HOSTLEN chars */
|
|
rb_snprintf(note, sizeof(note), "Server: %s", server_p->name);
|
|
rb_note(F, note);
|
|
|
|
/* Create a local client */
|
|
client_p = make_client(NULL);
|
|
|
|
/* Copy in the server, hostname, fd */
|
|
rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name));
|
|
rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host));
|
|
rb_strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost));
|
|
client_p->localClient->F = F;
|
|
add_to_cli_connid_hash(client_p);
|
|
/* shove the port number into the sockaddr */
|
|
#ifdef RB_IPV6
|
|
if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6)
|
|
((struct sockaddr_in6 *)&server_p->my_ipnum)->sin6_port = htons(server_p->port);
|
|
else
|
|
#endif
|
|
((struct sockaddr_in *)&server_p->my_ipnum)->sin_port = htons(server_p->port);
|
|
|
|
/*
|
|
* Set up the initial server evilness, ripped straight from
|
|
* connect_server(), so don't blame me for it being evil.
|
|
* -- adrian
|
|
*/
|
|
|
|
if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE))
|
|
{
|
|
ilog_error("setting the buffer size for a server connection");
|
|
}
|
|
|
|
/*
|
|
* Attach config entries to client here rather than in
|
|
* serv_connect_callback(). This to avoid null pointer references.
|
|
*/
|
|
attach_server_conf(client_p, server_p);
|
|
|
|
/*
|
|
* at this point we have a connection in progress and C/N lines
|
|
* attached to the client, the socket info should be saved in the
|
|
* client and it should either be resolved or have a valid address.
|
|
*
|
|
* The socket has been connected or connect is in progress.
|
|
*/
|
|
make_server(client_p);
|
|
if(by && IsClient(by))
|
|
strcpy(client_p->serv->by, by->name);
|
|
else
|
|
strcpy(client_p->serv->by, "AutoConn.");
|
|
|
|
SetConnecting(client_p);
|
|
rb_dlinkAddTail(client_p, &client_p->node, &global_client_list);
|
|
|
|
if(ServerConfVhosted(server_p))
|
|
{
|
|
memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum));
|
|
((struct sockaddr_in *)&myipnum)->sin_port = 0;
|
|
SET_SS_FAMILY(&myipnum, GET_SS_FAMILY(&server_p->my_ipnum));
|
|
|
|
}
|
|
else if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET && ServerInfo.specific_ipv4_vhost)
|
|
{
|
|
memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum));
|
|
((struct sockaddr_in *)&myipnum)->sin_port = 0;
|
|
SET_SS_FAMILY(&myipnum, AF_INET);
|
|
SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in));
|
|
}
|
|
|
|
#ifdef RB_IPV6
|
|
else if((GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6) && ServerInfo.specific_ipv6_vhost)
|
|
{
|
|
memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum));
|
|
((struct sockaddr_in6 *)&myipnum)->sin6_port = 0;
|
|
SET_SS_FAMILY(&myipnum, AF_INET6);
|
|
SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6));
|
|
}
|
|
#endif
|
|
else
|
|
{
|
|
if(ServerConfSSL(server_p))
|
|
{
|
|
rb_connect_tcp(client_p->localClient->F,
|
|
(struct sockaddr *)&server_p->my_ipnum, NULL, 0,
|
|
serv_connect_ssl_callback, client_p,
|
|
ConfigFileEntry.connect_timeout);
|
|
}
|
|
else
|
|
rb_connect_tcp(client_p->localClient->F,
|
|
(struct sockaddr *)&server_p->my_ipnum, NULL, 0,
|
|
serv_connect_callback, client_p,
|
|
ConfigFileEntry.connect_timeout);
|
|
|
|
return 1;
|
|
}
|
|
if(ServerConfSSL(server_p))
|
|
rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum,
|
|
(struct sockaddr *)&myipnum,
|
|
GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p,
|
|
ConfigFileEntry.connect_timeout);
|
|
else
|
|
rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum,
|
|
(struct sockaddr *)&myipnum,
|
|
GET_SS_LEN(&myipnum), serv_connect_callback, client_p,
|
|
ConfigFileEntry.connect_timeout);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
serv_connect_ssl_callback(rb_fde_t *F, int status, void *data)
|
|
{
|
|
struct Client *client_p = data;
|
|
rb_fde_t *xF[2];
|
|
rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip));
|
|
if(status != RB_OK)
|
|
{
|
|
/* Print error message, just like non-SSL. */
|
|
serv_connect_callback(F, status, data);
|
|
return;
|
|
}
|
|
if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1)
|
|
{
|
|
ilog_error("rb_socketpair failed for server");
|
|
serv_connect_callback(F, RB_ERROR, data);
|
|
return;
|
|
|
|
}
|
|
del_from_cli_connid_hash(client_p);
|
|
client_p->localClient->F = xF[0];
|
|
add_to_cli_connid_hash(client_p);
|
|
|
|
client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0]));
|
|
SetSSL(client_p);
|
|
serv_connect_callback(client_p->localClient->F, RB_OK, client_p);
|
|
}
|
|
|
|
/*
|
|
* serv_connect_callback() - complete a server connection.
|
|
*
|
|
* This routine is called after the server connection attempt has
|
|
* completed. If unsucessful, an error is sent to ops and the client
|
|
* is closed. If sucessful, it goes through the initialisation/check
|
|
* procedures, the capabilities are sent, and the socket is then
|
|
* marked for reading.
|
|
*/
|
|
static void
|
|
serv_connect_callback(rb_fde_t *F, int status, void *data)
|
|
{
|
|
struct Client *client_p = data;
|
|
struct server_conf *server_p;
|
|
char *errstr;
|
|
|
|
/* First, make sure its a real client! */
|
|
s_assert(client_p != NULL);
|
|
s_assert(client_p->localClient->F == F);
|
|
|
|
if(client_p == NULL)
|
|
return;
|
|
|
|
/* while we were waiting for the callback, its possible this already
|
|
* linked in.. --fl
|
|
*/
|
|
if(find_server(NULL, client_p->name) != NULL)
|
|
{
|
|
exit_client(client_p, client_p, &me, "Server Exists");
|
|
return;
|
|
}
|
|
|
|
if(client_p->localClient->ssl_ctl == NULL)
|
|
rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip));
|
|
|
|
/* Check the status */
|
|
if(status != RB_OK)
|
|
{
|
|
/* COMM_ERR_TIMEOUT wont have an errno associated with it,
|
|
* the others will.. --fl
|
|
*/
|
|
if(status == RB_ERR_TIMEOUT)
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL,
|
|
"Error connecting to %s[%s]: %s",
|
|
client_p->name,
|
|
"255.255.255.255",
|
|
rb_errstr(status));
|
|
ilog(L_SERVER, "Error connecting to %s[%s]: %s",
|
|
client_p->name, client_p->sockhost,
|
|
rb_errstr(status));
|
|
}
|
|
else
|
|
{
|
|
errstr = strerror(rb_get_sockerr(F));
|
|
sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL,
|
|
"Error connecting to %s[%s]: %s (%s)",
|
|
client_p->name,
|
|
"255.255.255.255",
|
|
rb_errstr(status), errstr);
|
|
ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)",
|
|
client_p->name, client_p->sockhost,
|
|
rb_errstr(status), errstr);
|
|
}
|
|
|
|
exit_client(client_p, client_p, &me, rb_errstr(status));
|
|
return;
|
|
}
|
|
|
|
/* COMM_OK, so continue the connection procedure */
|
|
/* Get the C/N lines */
|
|
if((server_p = client_p->localClient->att_sconf) == NULL)
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s",
|
|
client_p->name);
|
|
exit_client(client_p, client_p, &me, "Lost connect{} block");
|
|
return;
|
|
}
|
|
|
|
/* Next, send the initial handshake */
|
|
SetHandshake(client_p);
|
|
|
|
/* the server may be linking based on certificate fingerprint now. --nenolod */
|
|
sendto_one(client_p, "PASS %s TS %d :%s",
|
|
EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id);
|
|
|
|
/* pass my info to the new server */
|
|
send_capabilities(client_p, default_server_capabs
|
|
| (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0)
|
|
| (ServerConfTb(server_p) ? CAP_TB : 0));
|
|
|
|
sendto_one(client_p, "SERVER %s 1 :%s%s",
|
|
me.name,
|
|
ConfigServerHide.hidden ? "(H) " : "", me.info);
|
|
|
|
/*
|
|
* If we've been marked dead because a send failed, just exit
|
|
* here now and save everyone the trouble of us ever existing.
|
|
*/
|
|
if(IsAnyDead(client_p))
|
|
{
|
|
sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL,
|
|
"%s went dead during handshake", client_p->name);
|
|
exit_client(client_p, client_p, &me, "Went dead during handshake");
|
|
return;
|
|
}
|
|
|
|
/* don't move to serv_list yet -- we haven't sent a burst! */
|
|
|
|
/* If we get here, we're ok, so lets start reading some data */
|
|
read_packet(F, client_p);
|
|
}
|