250 lines
6.8 KiB
C
250 lines
6.8 KiB
C
/*
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* ircd-ratbox: A slightly useful ircd.
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* m_connect.c: Connects to a remote IRC server.
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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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#include "stdinc.h"
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#include "client.h"
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#include "ircd.h"
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#include "match.h"
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#include "numeric.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_serv.h"
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#include "send.h"
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#include "msg.h"
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#include "parse.h"
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#include "hash.h"
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#include "modules.h"
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#include "sslproc.h"
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static const char connect_desc[] =
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"Provides the CONNECT command to introduce servers to the network";
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static void mo_connect(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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static void ms_connect(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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struct Message connect_msgtab = {
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"CONNECT", 0, 0, 0, 0,
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{mg_unreg, mg_not_oper, {ms_connect, 4}, {ms_connect, 4}, mg_ignore, {mo_connect, 2}}
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};
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mapi_clist_av1 connect_clist[] = { &connect_msgtab, NULL };
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DECLARE_MODULE_AV2(connect, NULL, NULL, connect_clist, NULL, NULL, NULL, NULL, connect_desc);
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/*
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* mo_connect - CONNECT command handler
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*
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* Added by Jto 11 Feb 1989
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*
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* m_connect
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* parv[1] = servername
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* parv[2] = port number
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* parv[3] = remote server
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*/
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static void
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mo_connect(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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int port;
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int tmpport;
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struct server_conf *server_p;
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struct Client *target_p;
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/* always privileged with handlers */
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if(MyConnect(source_p) && !IsOperRemote(source_p) && parc > 3)
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS),
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me.name, source_p->name, "remote");
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return;
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}
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if(hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
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return;
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if((target_p = find_server(source_p, parv[1])))
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{
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sendto_one_notice(source_p, ":Connect: Server %s already exists from %s.", parv[1],
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target_p->from->name);
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return;
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}
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/*
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* try to find the name, then host, if both fail notify ops and bail
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*/
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if((server_p = find_server_conf(parv[1])) == NULL)
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{
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sendto_one_notice(source_p, ":Connect: Host %s not listed in ircd.conf", parv[1]);
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return;
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}
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if(ServerConfSSL(server_p) && (!ircd_ssl_ok || !get_ssld_count()))
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{
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sendto_one_notice(source_p,
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":Connect: Server %s is set to use SSL/TLS but SSL/TLS is not configured.",
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parv[1]);
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return;
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}
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/*
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* Get port number from user, if given. If not specified,
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* use the default form configuration structure. If missing
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* from there, then use the precompiled default.
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*/
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port = 0;
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if(parc > 2 && !EmptyString(parv[2]))
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port = atoi(parv[2]);
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if(port == 0 && server_p->port)
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port = server_p->port;
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else if(port <= 0)
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{
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sendto_one_notice(source_p, ":Connect: illegal port number");
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return;
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}
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/*
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* Notify all operators about remote connect requests
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*/
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ilog(L_SERVER, "CONNECT From %s : %s %s", source_p->name, parv[1], parc > 2 ? parv[2] : "");
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tmpport = server_p->port;
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server_p->port = port;
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/*
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* at this point we should be calling connect_server with a valid
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* C:line and a valid port in the C:line
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*/
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if(serv_connect(server_p, source_p))
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{
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sendto_one_notice(source_p, ":*** Connecting to %s.%d",
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server_p->name, server_p->port);
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}
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else
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{
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sendto_one_notice(source_p, ":*** Couldn't connect to %s.%d",
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server_p->name, server_p->port);
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}
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/*
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* client is either connecting with all the data it needs or has been
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* destroyed, so reset it back to the configured settings
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*/
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server_p->port = tmpport;
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}
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/*
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* ms_connect - CONNECT command handler
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*
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* Added by Jto 11 Feb 1989
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*
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* m_connect
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* parv[1] = servername
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* parv[2] = port number
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* parv[3] = remote server
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*/
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static void
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ms_connect(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
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{
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int port;
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int tmpport;
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struct server_conf *server_p;
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struct Client *target_p;
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if(hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
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return;
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if((target_p = find_server(NULL, parv[1])))
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{
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sendto_one_notice(source_p, ":Connect: Server %s already exists from %s.",
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parv[1], target_p->from->name);
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return;
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}
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/*
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* try to find the name, then host, if both fail notify ops and bail
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*/
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if((server_p = find_server_conf(parv[1])) == NULL)
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{
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sendto_one_notice(source_p, ":Connect: Host %s not listed in ircd.conf",
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parv[1]);
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return;
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}
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if(ServerConfSSL(server_p) && (!ircd_ssl_ok || !get_ssld_count()))
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{
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sendto_one_notice(source_p,
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":Connect: Server %s is set to use SSL/TLS but SSL/TLS is not configured.",
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parv[1]);
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return;
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}
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/*
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* Get port number from user, if given. If not specified,
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* use the default form configuration structure. If missing
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* from there, then use the precompiled default.
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*/
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tmpport = server_p->port;
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port = atoi(parv[2]);
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/* if someone sends port 0, and we have a config port.. use it */
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if(port == 0 && server_p->port)
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port = server_p->port;
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else if(port <= 0)
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{
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sendto_one_notice(source_p, ":Connect: Illegal port number");
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return;
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}
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/*
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* Notify all operators about remote connect requests
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*/
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sendto_wallops_flags(UMODE_WALLOP, &me,
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"Remote CONNECT %s %d from %s",
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parv[1], port, source_p->name);
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sendto_server(NULL, NULL, CAP_TS6, NOCAPS,
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":%s WALLOPS :Remote CONNECT %s %d from %s",
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me.id, parv[1], port, source_p->name);
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ilog(L_SERVER, "CONNECT From %s : %s %d", source_p->name, parv[1], port);
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server_p->port = port;
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/*
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* at this point we should be calling connect_server with a valid
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* C:line and a valid port in the C:line
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*/
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if(serv_connect(server_p, source_p))
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sendto_one_notice(source_p, ":*** Connecting to %s.%d",
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server_p->name, server_p->port);
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else
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sendto_one_notice(source_p, ":*** Couldn't connect to %s.%d",
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server_p->name, server_p->port);
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/*
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* client is either connecting with all the data it needs or has been
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* destroyed
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*/
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server_p->port = tmpport;
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}
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