[solanum.git] / modules / m_connect.c

/*
 *  ircd-ratbox: A slightly useful ircd.
 *  m_connect.c: Connects to a remote IRC server.
 *
 *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
 *  Copyright (C) 1996-2002 Hybrid Development Team
 *  Copyright (C) 2002-2005 ircd-ratbox development team
 *
 *  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 2 of the License, 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 *
 *  $Id: m_connect.c 3161 2007-01-25 07:23:01Z nenolod $
 */

#include "stdinc.h"
#include "client.h"
#include "ircd.h"
#include "match.h"
#include "numeric.h"
#include "s_conf.h"
#include "s_newconf.h"
#include "logger.h"
#include "s_serv.h"
#include "send.h"
#include "msg.h"
#include "parse.h"
#include "hash.h"
#include "modules.h"
#include "sslproc.h"

static int mo_connect(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static int ms_connect(struct MsgBuf *, struct Client *, struct Client *, int, const char **);

struct Message connect_msgtab = {
	"CONNECT", 0, 0, 0, MFLG_SLOW,
	{mg_unreg, mg_not_oper, {ms_connect, 4}, {ms_connect, 4}, mg_ignore, {mo_connect, 2}}
};

mapi_clist_av1 connect_clist[] = { &connect_msgtab, NULL };
DECLARE_MODULE_AV1(connect, NULL, NULL, connect_clist, NULL, NULL, "$Revision: 3161 $");

/*
 * mo_connect - CONNECT command handler
 *
 * Added by Jto 11 Feb 1989
 *
 * m_connect
 *      parv[1] = servername
 *      parv[2] = port number
 *      parv[3] = remote server
 */
static int
mo_connect(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	int port;
	int tmpport;
	struct server_conf *server_p;
	struct Client *target_p;

	/* always privileged with handlers */

	if(MyConnect(source_p) && !IsOperRemote(source_p) && parc > 3)
	{
		sendto_one(source_p, form_str(ERR_NOPRIVS),
			   me.name, source_p->name, "remote");
		return 0;
	}

	if(hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
		return 0;

	if((target_p = find_server(source_p, parv[1])))
	{
		sendto_one_notice(source_p, ":Connect: Server %s already exists from %s.", parv[1],
			target_p->from->name);
		return 0;
	}

	/*
	 * try to find the name, then host, if both fail notify ops and bail
	 */
	if((server_p = find_server_conf(parv[1])) == NULL)
	{
		sendto_one_notice(source_p, ":Connect: Host %s not listed in ircd.conf", parv[1]);
		return 0;
	}

	if(ServerConfSSL(server_p) && (!ssl_ok || !get_ssld_count()))
	{
		sendto_one_notice(source_p,
				  ":Connect: Server %s is set to use SSL/TLS but SSL/TLS is not configured.",
				  parv[1]);
		return 0;
	}

	/*
	 * Get port number from user, if given. If not specified,
	 * use the default form configuration structure. If missing
	 * from there, then use the precompiled default.
	 */
	tmpport = port = 0;
	if(parc > 2 && !EmptyString(parv[2]))
		port = atoi(parv[2]);
	if(port == 0 && server_p->port)
		port = server_p->port;
	else if(port <= 0)
	{
		sendto_one_notice(source_p, ":Connect: illegal port number");
		return 0;
	}
	
	/*
	 * Notify all operators about remote connect requests
	 */

	ilog(L_SERVER, "CONNECT From %s : %s %s", source_p->name, parv[1], parc > 2 ? parv[2] : "");

	server_p->port = port;
	/*
	 * at this point we should be calling connect_server with a valid
	 * C:line and a valid port in the C:line
	 */
	if(serv_connect(server_p, source_p))
	{
			sendto_one_notice(source_p, ":*** Connecting to %s.%d",
				server_p->name, server_p->port);
	}
	else
	{
		sendto_one_notice(source_p, ":*** Couldn't connect to %s.%d",
			server_p->name, server_p->port);
	}

	/*
	 * client is either connecting with all the data it needs or has been
	 * destroyed
	 */
	server_p->port = tmpport;
	return 0;
}

/*
 * ms_connect - CONNECT command handler
 *
 * Added by Jto 11 Feb 1989
 *
 * m_connect
 *      parv[1] = servername
 *      parv[2] = port number
 *      parv[3] = remote server
 */
static int
ms_connect(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	int port;
	int tmpport;
	struct server_conf *server_p;
	struct Client *target_p;

	if(hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
		return 0;

	if((target_p = find_server(NULL, parv[1])))
	{
		sendto_one_notice(source_p, ":Connect: Server %s already exists from %s.",
				  parv[1], target_p->from->name);
		return 0;
	}

	/*
	 * try to find the name, then host, if both fail notify ops and bail
	 */
	if((server_p = find_server_conf(parv[1])) == NULL)
	{
		sendto_one_notice(source_p, ":Connect: Host %s not listed in ircd.conf",
				  parv[1]);
		return 0;
	}

	if(ServerConfSSL(server_p) && (!ssl_ok || !get_ssld_count()))
	{
		sendto_one_notice(source_p,
				  ":Connect: Server %s is set to use SSL/TLS but SSL/TLS is not configured.",
				  parv[1]);
		return 0;
	}

	/*
	 * Get port number from user, if given. If not specified,
	 * use the default form configuration structure. If missing
	 * from there, then use the precompiled default.
	 */
	tmpport = server_p->port;

	port = atoi(parv[2]);

	/* if someone sends port 0, and we have a config port.. use it */
	if(port == 0 && server_p->port)
		port = server_p->port;
	else if(port <= 0)
	{
		sendto_one_notice(source_p, ":Connect: Illegal port number");
		return 0;
	}

	/*
	 * Notify all operators about remote connect requests
	 */
	sendto_wallops_flags(UMODE_WALLOP, &me,
			     "Remote CONNECT %s %d from %s",
			     parv[1], port, source_p->name);
	sendto_server(NULL, NULL, CAP_TS6, NOCAPS,
		      ":%s WALLOPS :Remote CONNECT %s %d from %s",
		      me.id, parv[1], port, source_p->name);

	ilog(L_SERVER, "CONNECT From %s : %s %d", source_p->name, parv[1], port);

	server_p->port = port;
	/*
	 * at this point we should be calling connect_server with a valid
	 * C:line and a valid port in the C:line
	 */
	if(serv_connect(server_p, source_p))
		sendto_one_notice(source_p, ":*** Connecting to %s.%d",
				  server_p->name, server_p->port);
	else
		sendto_one_notice(source_p, ":*** Couldn't connect to %s.%d",
				  server_p->name, server_p->port);
	/*
	 * client is either connecting with all the data it needs or has been
	 * destroyed
	 */
	server_p->port = tmpport;
	return 0;
}
Commit	Line	Data
212380e3 AC	1	/*
	2	* ircd-ratbox: A slightly useful ircd.
	3	* m_connect.c: Connects to a remote IRC server.
	4	*
	5	* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
	6	* Copyright (C) 1996-2002 Hybrid Development Team
	7	* Copyright (C) 2002-2005 ircd-ratbox development team
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
	22	* USA
	23	*
5366977b	24	* $Id: m_connect.c 3161 2007-01-25 07:23:01Z nenolod $
212380e3 AC	25	*/
	26
	27	#include "stdinc.h"
	28	#include "client.h"
	29	#include "ircd.h"
4562c604	30	#include "match.h"
212380e3	31	#include "numeric.h"
212380e3 AC	32	#include "s_conf.h"
212380e3 AC	33	#include "s_newconf.h"
4016731b	34	#include "logger.h"
212380e3 AC	35	#include "s_serv.h"
	36	#include "send.h"
	37	#include "msg.h"
	38	#include "parse.h"
	39	#include "hash.h"
	40	#include "modules.h"
f6f5f9c2	41	#include "sslproc.h"
212380e3	42
428ca87b AC	43	static int mo_connect(struct MsgBuf , struct Client , struct Client , int, const char *);
428ca87b AC	44	static int ms_connect(struct MsgBuf , struct Client , struct Client , int, const char *);
212380e3 AC	45
	46	struct Message connect_msgtab = {
	47	"CONNECT", 0, 0, 0, MFLG_SLOW,
	48	{mg_unreg, mg_not_oper, {ms_connect, 4}, {ms_connect, 4}, mg_ignore, {mo_connect, 2}}
	49	};
	50
	51	mapi_clist_av1 connect_clist[] = { &connect_msgtab, NULL };
5366977b	52	DECLARE_MODULE_AV1(connect, NULL, NULL, connect_clist, NULL, NULL, "$Revision: 3161 $");
212380e3 AC	53
	54	/*
	55	* mo_connect - CONNECT command handler
55abcbb2	56	*
212380e3 AC	57	* Added by Jto 11 Feb 1989
	58	*
	59	* m_connect
212380e3 AC	60	* parv[1] = servername
	61	* parv[2] = port number
	62	* parv[3] = remote server
	63	*/
	64	static int
428ca87b	65	mo_connect(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	66	{
	67	int port;
	68	int tmpport;
	69	struct server_conf *server_p;
	70	struct Client *target_p;
	71
	72	/* always privileged with handlers */
	73
	74	if(MyConnect(source_p) && !IsOperRemote(source_p) && parc > 3)
	75	{
	76	sendto_one(source_p, form_str(ERR_NOPRIVS),
	77	me.name, source_p->name, "remote");
	78	return 0;
	79	}
	80
	81	if(hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
	82	return 0;
	83
	84	if((target_p = find_server(source_p, parv[1])))
	85	{
55abcbb2	86	sendto_one_notice(source_p, ":Connect: Server %s already exists from %s.", parv[1],
5366977b	87	target_p->from->name);
212380e3 AC	88	return 0;
	89	}
	90
	91	/*
	92	* try to find the name, then host, if both fail notify ops and bail
	93	*/
	94	if((server_p = find_server_conf(parv[1])) == NULL)
	95	{
5366977b	96	sendto_one_notice(source_p, ":Connect: Host %s not listed in ircd.conf", parv[1]);
212380e3 AC	97	return 0;
	98	}
	99
8bd5767b JT	100	if(ServerConfSSL(server_p) && (!ssl_ok \|\| !get_ssld_count()))
	101	{
	102	sendto_one_notice(source_p,
	103	":Connect: Server %s is set to use SSL/TLS but SSL/TLS is not configured.",
	104	parv[1]);
	105	return 0;
c6d72037 VY	106	}
c6d72037 VY	107
212380e3 AC	108	/*
	109	* Get port number from user, if given. If not specified,
	110	* use the default form configuration structure. If missing
	111	* from there, then use the precompiled default.
	112	*/
abad2c5d	113	tmpport = port = 0;
212380e3	114	if(parc > 2 && !EmptyString(parv[2]))
abad2c5d AC	115	port = atoi(parv[2]);
	116	if(port == 0 && server_p->port)
	117	port = server_p->port;
	118	else if(port <= 0)
212380e3	119	{
abad2c5d	120	sendto_one_notice(source_p, ":Connect: illegal port number");
212380e3 AC	121	return 0;
212380e3 AC	122	}
abad2c5d	123
212380e3 AC	124	/*
	125	* Notify all operators about remote connect requests
	126	*/
	127
3dfaa671	128	ilog(L_SERVER, "CONNECT From %s : %s %s", source_p->name, parv[1], parc > 2 ? parv[2] : "");
212380e3 AC	129
	130	server_p->port = port;
	131	/*
	132	* at this point we should be calling connect_server with a valid
	133	* C:line and a valid port in the C:line
	134	*/
	135	if(serv_connect(server_p, source_p))
	136	{
5366977b AC	137	sendto_one_notice(source_p, ":*** Connecting to %s.%d",
5366977b AC	138	server_p->name, server_p->port);
212380e3 AC	139	}
	140	else
	141	{
5366977b AC	142	sendto_one_notice(source_p, ":*** Couldn't connect to %s.%d",
5366977b AC	143	server_p->name, server_p->port);
212380e3 AC	144	}
	145
	146	/*
	147	* client is either connecting with all the data it needs or has been
	148	* destroyed
	149	*/
	150	server_p->port = tmpport;
	151	return 0;
	152	}
	153
	154	/*
	155	* ms_connect - CONNECT command handler
55abcbb2	156	*
212380e3 AC	157	* Added by Jto 11 Feb 1989
	158	*
	159	* m_connect
212380e3 AC	160	* parv[1] = servername
	161	* parv[2] = port number
	162	* parv[3] = remote server
	163	*/
	164	static int
428ca87b	165	ms_connect(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	166	{
	167	int port;
	168	int tmpport;
	169	struct server_conf *server_p;
	170	struct Client *target_p;
	171
	172	if(hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
	173	return 0;
	174
	175	if((target_p = find_server(NULL, parv[1])))
	176	{
	177	sendto_one_notice(source_p, ":Connect: Server %s already exists from %s.",
	178	parv[1], target_p->from->name);
	179	return 0;
	180	}
	181
	182	/*
	183	* try to find the name, then host, if both fail notify ops and bail
	184	*/
	185	if((server_p = find_server_conf(parv[1])) == NULL)
	186	{
	187	sendto_one_notice(source_p, ":Connect: Host %s not listed in ircd.conf",
	188	parv[1]);
	189	return 0;
	190	}
	191
8bd5767b JT	192	if(ServerConfSSL(server_p) && (!ssl_ok \|\| !get_ssld_count()))
	193	{
	194	sendto_one_notice(source_p,
	195	":Connect: Server %s is set to use SSL/TLS but SSL/TLS is not configured.",
	196	parv[1]);
	197	return 0;
c6d72037 VY	198	}
c6d72037 VY	199
212380e3 AC	200	/*
	201	* Get port number from user, if given. If not specified,
	202	* use the default form configuration structure. If missing
	203	* from there, then use the precompiled default.
	204	*/
	205	tmpport = server_p->port;
	206
	207	port = atoi(parv[2]);
	208
	209	/* if someone sends port 0, and we have a config port.. use it */
	210	if(port == 0 && server_p->port)
	211	port = server_p->port;
	212	else if(port <= 0)
	213	{
	214	sendto_one_notice(source_p, ":Connect: Illegal port number");
	215	return 0;
	216	}
	217
	218	/*
	219	* Notify all operators about remote connect requests
	220	*/
	221	sendto_wallops_flags(UMODE_WALLOP, &me,
55abcbb2	222	"Remote CONNECT %s %d from %s",
212380e3 AC	223	parv[1], port, source_p->name);
	224	sendto_server(NULL, NULL, CAP_TS6, NOCAPS,
	225	":%s WALLOPS :Remote CONNECT %s %d from %s",
	226	me.id, parv[1], port, source_p->name);
212380e3 AC	227
	228	ilog(L_SERVER, "CONNECT From %s : %s %d", source_p->name, parv[1], port);
	229
	230	server_p->port = port;
	231	/*
	232	* at this point we should be calling connect_server with a valid
	233	* C:line and a valid port in the C:line
	234	*/
	235	if(serv_connect(server_p, source_p))
	236	sendto_one_notice(source_p, ":*** Connecting to %s.%d",
	237	server_p->name, server_p->port);
	238	else
	239	sendto_one_notice(source_p, ":*** Couldn't connect to %s.%d",
	240	server_p->name, server_p->port);
	241	/*
	242	* client is either connecting with all the data it needs or has been
	243	* destroyed
	244	*/
	245	server_p->port = tmpport;
	246	return 0;
	247	}