[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
 */

#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 const char connect_desc[] =
	"Provides the CONNECT command to introduce servers to the network";

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, 0,
	{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_AV2(connect, NULL, NULL, connect_clist, NULL, NULL, NULL, NULL, connect_desc);

/*
 * 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.
	 */
	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] : "");

	tmpport = server_p->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, so reset it back to the configured settings
	 */
	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
212380e3 AC	23	*/
	24
	25	#include "stdinc.h"
	26	#include "client.h"
	27	#include "ircd.h"
4562c604	28	#include "match.h"
212380e3	29	#include "numeric.h"
212380e3 AC	30	#include "s_conf.h"
212380e3 AC	31	#include "s_newconf.h"
4016731b	32	#include "logger.h"
212380e3 AC	33	#include "s_serv.h"
	34	#include "send.h"
	35	#include "msg.h"
	36	#include "parse.h"
	37	#include "hash.h"
	38	#include "modules.h"
f6f5f9c2	39	#include "sslproc.h"
212380e3	40
eeabf33a EM	41	static const char connect_desc[] =
	42	"Provides the CONNECT command to introduce servers to the network";
	43
428ca87b AC	44	static int mo_connect(struct MsgBuf , struct Client , struct Client , int, const char *);
428ca87b AC	45	static int ms_connect(struct MsgBuf , struct Client , struct Client , int, const char *);
212380e3 AC	46
212380e3 AC	47	struct Message connect_msgtab = {
7baa37a9	48	"CONNECT", 0, 0, 0, 0,
212380e3 AC	49	{mg_unreg, mg_not_oper, {ms_connect, 4}, {ms_connect, 4}, mg_ignore, {mo_connect, 2}}
	50	};
	51
	52	mapi_clist_av1 connect_clist[] = { &connect_msgtab, NULL };
5544da98	53
5544da98	54	DECLARE_MODULE_AV2(connect, NULL, NULL, connect_clist, NULL, NULL, NULL, NULL, connect_desc);
212380e3 AC	55
	56	/*
	57	* mo_connect - CONNECT command handler
55abcbb2	58	*
212380e3 AC	59	* Added by Jto 11 Feb 1989
	60	*
	61	* m_connect
212380e3 AC	62	* parv[1] = servername
	63	* parv[2] = port number
	64	* parv[3] = remote server
	65	*/
	66	static int
428ca87b	67	mo_connect(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	68	{
	69	int port;
	70	int tmpport;
	71	struct server_conf *server_p;
	72	struct Client *target_p;
	73
	74	/* always privileged with handlers */
	75
	76	if(MyConnect(source_p) && !IsOperRemote(source_p) && parc > 3)
	77	{
	78	sendto_one(source_p, form_str(ERR_NOPRIVS),
	79	me.name, source_p->name, "remote");
	80	return 0;
	81	}
	82
	83	if(hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
	84	return 0;
	85
	86	if((target_p = find_server(source_p, parv[1])))
	87	{
55abcbb2	88	sendto_one_notice(source_p, ":Connect: Server %s already exists from %s.", parv[1],
5366977b	89	target_p->from->name);
212380e3 AC	90	return 0;
	91	}
	92
	93	/*
	94	* try to find the name, then host, if both fail notify ops and bail
	95	*/
	96	if((server_p = find_server_conf(parv[1])) == NULL)
	97	{
5366977b	98	sendto_one_notice(source_p, ":Connect: Host %s not listed in ircd.conf", parv[1]);
212380e3 AC	99	return 0;
	100	}
	101
8bd5767b JT	102	if(ServerConfSSL(server_p) && (!ssl_ok \|\| !get_ssld_count()))
	103	{
	104	sendto_one_notice(source_p,
	105	":Connect: Server %s is set to use SSL/TLS but SSL/TLS is not configured.",
	106	parv[1]);
	107	return 0;
c6d72037 VY	108	}
c6d72037 VY	109
212380e3 AC	110	/*
	111	* Get port number from user, if given. If not specified,
	112	* use the default form configuration structure. If missing
	113	* from there, then use the precompiled default.
	114	*/
08e43ffb	115	port = 0;
212380e3	116	if(parc > 2 && !EmptyString(parv[2]))
abad2c5d AC	117	port = atoi(parv[2]);
	118	if(port == 0 && server_p->port)
	119	port = server_p->port;
	120	else if(port <= 0)
212380e3	121	{
abad2c5d	122	sendto_one_notice(source_p, ":Connect: illegal port number");
212380e3 AC	123	return 0;
212380e3 AC	124	}
5544da98	125
212380e3 AC	126	/*
	127	* Notify all operators about remote connect requests
	128	*/
	129
3dfaa671	130	ilog(L_SERVER, "CONNECT From %s : %s %s", source_p->name, parv[1], parc > 2 ? parv[2] : "");
212380e3	131
08e43ffb	132	tmpport = server_p->port;
212380e3	133	server_p->port = port;
08e43ffb	134
212380e3 AC	135	/*
	136	* at this point we should be calling connect_server with a valid
	137	* C:line and a valid port in the C:line
	138	*/
	139	if(serv_connect(server_p, source_p))
	140	{
5366977b AC	141	sendto_one_notice(source_p, ":*** Connecting to %s.%d",
5366977b AC	142	server_p->name, server_p->port);
212380e3 AC	143	}
	144	else
	145	{
5366977b AC	146	sendto_one_notice(source_p, ":*** Couldn't connect to %s.%d",
5366977b AC	147	server_p->name, server_p->port);
212380e3 AC	148	}
	149
	150	/*
	151	* client is either connecting with all the data it needs or has been
08e43ffb	152	* destroyed, so reset it back to the configured settings
212380e3 AC	153	*/
212380e3 AC	154	server_p->port = tmpport;
08e43ffb	155
212380e3 AC	156	return 0;
	157	}
	158
	159	/*
	160	* ms_connect - CONNECT command handler
55abcbb2	161	*
212380e3 AC	162	* Added by Jto 11 Feb 1989
	163	*
	164	* m_connect
212380e3 AC	165	* parv[1] = servername
	166	* parv[2] = port number
	167	* parv[3] = remote server
	168	*/
	169	static int
428ca87b	170	ms_connect(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	171	{
	172	int port;
	173	int tmpport;
	174	struct server_conf *server_p;
	175	struct Client *target_p;
	176
	177	if(hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
	178	return 0;
	179
	180	if((target_p = find_server(NULL, parv[1])))
	181	{
	182	sendto_one_notice(source_p, ":Connect: Server %s already exists from %s.",
	183	parv[1], target_p->from->name);
	184	return 0;
	185	}
	186
	187	/*
	188	* try to find the name, then host, if both fail notify ops and bail
	189	*/
	190	if((server_p = find_server_conf(parv[1])) == NULL)
	191	{
	192	sendto_one_notice(source_p, ":Connect: Host %s not listed in ircd.conf",
	193	parv[1]);
	194	return 0;
	195	}
	196
8bd5767b JT	197	if(ServerConfSSL(server_p) && (!ssl_ok \|\| !get_ssld_count()))
	198	{
	199	sendto_one_notice(source_p,
	200	":Connect: Server %s is set to use SSL/TLS but SSL/TLS is not configured.",
	201	parv[1]);
	202	return 0;
c6d72037 VY	203	}
c6d72037 VY	204
212380e3 AC	205	/*
	206	* Get port number from user, if given. If not specified,
	207	* use the default form configuration structure. If missing
	208	* from there, then use the precompiled default.
	209	*/
	210	tmpport = server_p->port;
	211
	212	port = atoi(parv[2]);
	213
	214	/* if someone sends port 0, and we have a config port.. use it */
	215	if(port == 0 && server_p->port)
	216	port = server_p->port;
	217	else if(port <= 0)
	218	{
	219	sendto_one_notice(source_p, ":Connect: Illegal port number");
	220	return 0;
	221	}
	222
	223	/*
	224	* Notify all operators about remote connect requests
	225	*/
	226	sendto_wallops_flags(UMODE_WALLOP, &me,
55abcbb2	227	"Remote CONNECT %s %d from %s",
212380e3 AC	228	parv[1], port, source_p->name);
	229	sendto_server(NULL, NULL, CAP_TS6, NOCAPS,
	230	":%s WALLOPS :Remote CONNECT %s %d from %s",
	231	me.id, parv[1], port, source_p->name);
212380e3 AC	232
	233	ilog(L_SERVER, "CONNECT From %s : %s %d", source_p->name, parv[1], port);
	234
	235	server_p->port = port;
	236	/*
	237	* at this point we should be calling connect_server with a valid
	238	* C:line and a valid port in the C:line
	239	*/
	240	if(serv_connect(server_p, source_p))
	241	sendto_one_notice(source_p, ":*** Connecting to %s.%d",
	242	server_p->name, server_p->port);
	243	else
	244	sendto_one_notice(source_p, ":*** Couldn't connect to %s.%d",
	245	server_p->name, server_p->port);
	246	/*
	247	* client is either connecting with all the data it needs or has been
	248	* destroyed
	249	*/
	250	server_p->port = tmpport;
	251	return 0;
	252	}