trunk/modules/m_connect.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_connect.c: Connects to a remote IRC server.
 *
 *  Copyright (C) 2002 by the past and present ircd coders, and others.
 *
 *  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
 *
 *  $Id$
 */

#include "stdinc.h"
#include "client.h"
#include "ircd.h"
#include "irc_string.h"
#include "numeric.h"
#include "fdlist.h"
#include "s_bsd.h"
#include "conf.h"
#include "log.h"
#include "s_serv.h"
#include "send.h"
#include "parse.h"
#include "hash.h"
#include "modules.h"


/*
 * mo_connect - CONNECT command handler
 * 
 * Added by Jto 11 Feb 1989
 *
 * m_connect
 *      parv[0] = sender prefix
 *      parv[1] = servername
 *      parv[2] = port number
 *      parv[3] = remote server
 */
static void
mo_connect(struct Client *client_p, struct Client *source_p,
           int parc, char *parv[])
{
  int port;
  int tmpport;
  struct MaskItem *conf = NULL;
  const struct Client *target_p = NULL;

  if (EmptyString(parv[1]))
  {
    sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
               me.name, source_p->name, "CONNECT");
    return;
  }

  if (parc > 3)
  {
    if (!HasOFlag(source_p, OPER_FLAG_REMOTE))
    {
      sendto_one(source_p, form_str(ERR_NOPRIVS),
                 me.name, source_p->name, "connect");
      return;
    }

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

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

  /*
   * try to find the name, then host, if both fail notify ops and bail
   */
  if ((conf = find_matching_name_conf(CONF_SERVER, parv[1], NULL, NULL, 0)))
    ;
  else if  ((conf = find_matching_name_conf(CONF_SERVER,  NULL, NULL, parv[1], 0)))
    ;
 
  if (!conf)
  {
    sendto_one(source_p,
               ":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
               me.name, source_p->name, parv[1]);
    return;
  }

  /* 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 = conf->port;

  if (parc > 2 && !EmptyString(parv[2]))
  {
    if ((port = atoi(parv[2])) <= 0)
    {
      sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal port number",
                 me.name, source_p->name);
      return;
    }
  }
  else if (port <= 0 && (port = PORTNUM) <= 0)
  {
    sendto_one(source_p, ":%s NOTICE %s :Connect: missing port number",
               me.name, source_p->name);
    return;
  }

  if (find_servconn_in_progress(conf->name))
  {
    sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
               "is already in progress.", me.name, source_p->name, conf->name);
    return;
  }

  /*
   * Notify all operators about remote connect requests
   */
  ilog(LOG_TYPE_IRCD, "CONNECT From %s : %s %s", 
       source_p->name, parv[1], parv[2] ? parv[2] : "");

  conf->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(conf, source_p))
  {
    if (!ConfigServerHide.hide_server_ips && HasUMode(source_p, UMODE_ADMIN))
      sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s[%s].%d",
                 me.name, source_p->name, conf->host,
                 conf->name, conf->port);
    else
      sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
                 me.name, source_p->name, conf->name, conf->port);
  }
  else
  {
    sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
               me.name, source_p->name, conf->name, conf->port);
  }

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

/*
 * ms_connect - CONNECT command handler
 * 
 * Added by Jto 11 Feb 1989
 *
 * m_connect
 *      parv[0] = sender prefix
 *      parv[1] = servername
 *      parv[2] = port number
 *      parv[3] = remote server
 */
static void
ms_connect(struct Client *client_p, struct Client *source_p,
           int parc, char *parv[])
{
  int port;
  int tmpport;
  struct MaskItem *conf = NULL;
  const struct Client *target_p = NULL;

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

  if (EmptyString(parv[1]))
  {
    sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
               me.name, source_p->name, "CONNECT");
    return;
  }

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

  /*
   * try to find the name, then host, if both fail notify ops and bail
   */

  if ((conf = find_matching_name_conf(CONF_SERVER, parv[1], NULL, NULL, 0)))
    ;
  else if  ((conf = find_matching_name_conf(CONF_SERVER,  NULL, NULL, parv[1], 0)))
    ;

  if (!conf)
  {
    sendto_one(source_p,
               ":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
               me.name, source_p->name, parv[1]);
    return;
  }

  /* 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 = conf->port;

  if (parc > 2 && !EmptyString(parv[2]))
  {
    port = atoi(parv[2]);

    /* if someone sends port 0, and we have a config port.. use it */
    if (port == 0 && conf->port)
      port = conf->port;
    else if (port <= 0)
    {
      sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal port number",
                 me.name, source_p->name);
      return;
    }
  }
  else if (port <= 0 && (port = PORTNUM) <= 0)
  {
    sendto_one(source_p, ":%s NOTICE %s :Connect: missing port number",
               me.name, source_p->name);
    return;
  }

  if (find_servconn_in_progress(conf->name))
  {
    sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
               "is already in progress.", me.name, source_p->name, conf->name);
    return;
  }

  /*
   * 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, NOCAPS, CAP_TS6,
                ":%s WALLOPS :Remote CONNECT %s %d from %s",
                me.name, parv[1], port, source_p->name);
  sendto_server(NULL, CAP_TS6, NOCAPS,
                ":%s WALLOPS :Remote CONNECT %s %d from %s",
                me.id, parv[1], port, source_p->name);

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

  conf->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(conf, source_p))
    sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
               me.name, source_p->name, conf->name, conf->port);
  else
    sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
               me.name, source_p->name, conf->name, conf->port);
  /*
   * Client is either connecting with all the data it needs or has been
   * destroyed
   */
  conf->port = tmpport;
}

static struct Message connect_msgtab = {
  "CONNECT", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
  { m_unregistered, m_not_oper, ms_connect, m_ignore, mo_connect, m_ignore }
};

static void
module_init(void)
{
  mod_add_cmd(&connect_msgtab);
}

static void
module_exit(void)
{
  mod_del_cmd(&connect_msgtab);
}

struct module module_entry = {
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = 0
};
Revision:	1632
Committed:	Sun Nov 4 15:37:10 2012 UTC (12 years, 9 months ago) by michael
Content type:	text/x-csrc
File size:	8682 byte(s)
Log Message:	- Initial rewrite of the configuration subsystem
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_connect.c: Connects to a remote IRC server.
4			*
5			* Copyright (C) 2002 by the past and present ircd coders, and others.
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20			* USA
21			*
22	knight	31	* $Id$
23	adx	30	*/
24
25			#include "stdinc.h"
26			#include "client.h"
27			#include "ircd.h"
28			#include "irc_string.h"
29			#include "numeric.h"
30			#include "fdlist.h"
31			#include "s_bsd.h"
32	michael	1309	#include "conf.h"
33			#include "log.h"
34	adx	30	#include "s_serv.h"
35			#include "send.h"
36			#include "parse.h"
37			#include "hash.h"
38			#include "modules.h"
39
40
41			/*
42			* mo_connect - CONNECT command handler
43			*
44			* Added by Jto 11 Feb 1989
45			*
46			* m_connect
47			* parv[0] = sender prefix
48			* parv[1] = servername
49			* parv[2] = port number
50			* parv[3] = remote server
51			*/
52			static void
53	michael	971	mo_connect(struct Client client_p, struct Client source_p,
54			int parc, char *parv[])
55	adx	30	{
56			int port;
57			int tmpport;
58	michael	1632	struct MaskItem *conf = NULL;
59	michael	971	const struct Client *target_p = NULL;
60	adx	30
61	michael	971	if (EmptyString(parv[1]))
62	adx	30	{
63	michael	971	sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
64			me.name, source_p->name, "CONNECT");
65	adx	30	return;
66			}
67
68	michael	971	if (parc > 3)
69			{
70	michael	1219	if (!HasOFlag(source_p, OPER_FLAG_REMOTE))
71	michael	971	{
72			sendto_one(source_p, form_str(ERR_NOPRIVS),
73			me.name, source_p->name, "connect");
74			return;
75			}
76	adx	30
77	michael	971	if (hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3,
78			parc, parv) != HUNTED_ISME)
79			return;
80	adx	30	}
81
82	michael	1169	if ((target_p = hash_find_server(parv[1])))
83	adx	30	{
84			sendto_one(source_p,
85			":%s NOTICE %s :Connect: Server %s already exists from %s.",
86			me.name, source_p->name, parv[1], target_p->from->name);
87			return;
88			}
89
90			/*
91			* try to find the name, then host, if both fail notify ops and bail
92			*/
93	michael	1632	if ((conf = find_matching_name_conf(CONF_SERVER, parv[1], NULL, NULL, 0)))
94			;
95			else if ((conf = find_matching_name_conf(CONF_SERVER, NULL, NULL, parv[1], 0)))
96			;
97
98			if (!conf)
99	adx	30	{
100			sendto_one(source_p,
101			":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
102			me.name, source_p->name, parv[1]);
103			return;
104			}
105	michael	971
106	adx	30	/* Get port number from user, if given. If not specified,
107			* use the default form configuration structure. If missing
108			* from there, then use the precompiled default.
109			*/
110	michael	1632	tmpport = port = conf->port;
111	adx	30
112			if (parc > 2 && !EmptyString(parv[2]))
113			{
114			if ((port = atoi(parv[2])) <= 0)
115			{
116			sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal port number",
117			me.name, source_p->name);
118			return;
119			}
120			}
121			else if (port <= 0 && (port = PORTNUM) <= 0)
122			{
123			sendto_one(source_p, ":%s NOTICE %s :Connect: missing port number",
124			me.name, source_p->name);
125			return;
126			}
127
128			if (find_servconn_in_progress(conf->name))
129			{
130			sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
131			"is already in progress.", me.name, source_p->name, conf->name);
132			return;
133			}
134
135			/*
136			* Notify all operators about remote connect requests
137			*/
138	michael	1247	ilog(LOG_TYPE_IRCD, "CONNECT From %s : %s %s",
139	adx	30	source_p->name, parv[1], parv[2] ? parv[2] : "");
140
141	michael	1632	conf->port = port;
142	adx	30
143			/* at this point we should be calling connect_server with a valid
144			* C:line and a valid port in the C:line
145			*/
146	michael	1632	if (serv_connect(conf, source_p))
147	adx	30	{
148	michael	1219	if (!ConfigServerHide.hide_server_ips && HasUMode(source_p, UMODE_ADMIN))
149	adx	30	sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s[%s].%d",
150	michael	1632	me.name, source_p->name, conf->host,
151			conf->name, conf->port);
152	adx	30	else
153			sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
154	michael	1632	me.name, source_p->name, conf->name, conf->port);
155	adx	30	}
156			else
157			{
158			sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
159	michael	1632	me.name, source_p->name, conf->name, conf->port);
160	adx	30	}
161
162			/* client is either connecting with all the data it needs or has been
163			* destroyed
164			*/
165	michael	1632	conf->port = tmpport;
166	adx	30	}
167
168			/*
169			* ms_connect - CONNECT command handler
170			*
171			* Added by Jto 11 Feb 1989
172			*
173			* m_connect
174			* parv[0] = sender prefix
175			* parv[1] = servername
176			* parv[2] = port number
177			* parv[3] = remote server
178			*/
179			static void
180			ms_connect(struct Client client_p, struct Client source_p,
181			int parc, char *parv[])
182			{
183			int port;
184			int tmpport;
185	michael	1632	struct MaskItem *conf = NULL;
186	michael	971	const struct Client *target_p = NULL;
187	adx	30
188			if (hunt_server(client_p, source_p,
189			":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
190			return;
191
192	michael	1413	if (EmptyString(parv[1]))
193	adx	30	{
194			sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
195			me.name, source_p->name, "CONNECT");
196			return;
197			}
198
199	michael	1169	if ((target_p = hash_find_server(parv[1])))
200	adx	30	{
201			sendto_one(source_p,
202			":%s NOTICE %s :Connect: Server %s already exists from %s.",
203			me.name, source_p->name, parv[1], target_p->from->name);
204			return;
205			}
206
207			/*
208			* try to find the name, then host, if both fail notify ops and bail
209			*/
210
211	michael	1632	if ((conf = find_matching_name_conf(CONF_SERVER, parv[1], NULL, NULL, 0)))
212			;
213			else if ((conf = find_matching_name_conf(CONF_SERVER, NULL, NULL, parv[1], 0)))
214			;
215
216			if (!conf)
217	adx	30	{
218			sendto_one(source_p,
219			":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
220			me.name, source_p->name, parv[1]);
221			return;
222			}
223
224			/* Get port number from user, if given. If not specified,
225			* use the default form configuration structure. If missing
226			* from there, then use the precompiled default.
227			*/
228	michael	1632	tmpport = port = conf->port;
229	adx	30
230			if (parc > 2 && !EmptyString(parv[2]))
231			{
232			port = atoi(parv[2]);
233
234			/* if someone sends port 0, and we have a config port.. use it */
235	michael	1632	if (port == 0 && conf->port)
236			port = conf->port;
237	adx	30	else if (port <= 0)
238			{
239			sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal port number",
240			me.name, source_p->name);
241			return;
242			}
243			}
244			else if (port <= 0 && (port = PORTNUM) <= 0)
245			{
246			sendto_one(source_p, ":%s NOTICE %s :Connect: missing port number",
247			me.name, source_p->name);
248			return;
249			}
250
251			if (find_servconn_in_progress(conf->name))
252			{
253			sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
254			"is already in progress.", me.name, source_p->name, conf->name);
255			return;
256			}
257
258			/*
259			* Notify all operators about remote connect requests
260			*/
261			sendto_wallops_flags(UMODE_WALLOP, &me, "Remote CONNECT %s %d from %s",
262			parv[1], port, source_p->name);
263	michael	1474	sendto_server(NULL, NOCAPS, CAP_TS6,
264	adx	30	":%s WALLOPS :Remote CONNECT %s %d from %s",
265			me.name, parv[1], port, source_p->name);
266	michael	1474	sendto_server(NULL, CAP_TS6, NOCAPS,
267	michael	1463	":%s WALLOPS :Remote CONNECT %s %d from %s",
268			me.id, parv[1], port, source_p->name);
269	adx	30
270	michael	1247	ilog(LOG_TYPE_IRCD, "CONNECT From %s : %s %d",
271	adx	30	source_p->name, parv[1], port);
272
273	michael	1632	conf->port = port;
274	adx	30
275	michael	885	/*
276			* At this point we should be calling connect_server with a valid
277	adx	30	* C:line and a valid port in the C:line
278			*/
279	michael	1632	if (serv_connect(conf, source_p))
280	adx	30	sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
281	michael	1632	me.name, source_p->name, conf->name, conf->port);
282	adx	30	else
283			sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
284	michael	1632	me.name, source_p->name, conf->name, conf->port);
285	michael	885	/*
286			* Client is either connecting with all the data it needs or has been
287	adx	30	* destroyed
288			*/
289	michael	1632	conf->port = tmpport;
290	adx	30	}
291	michael	1230
292			static struct Message connect_msgtab = {
293			"CONNECT", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
294			{ m_unregistered, m_not_oper, ms_connect, m_ignore, mo_connect, m_ignore }
295			};
296
297			static void
298			module_init(void)
299			{
300			mod_add_cmd(&connect_msgtab);
301			}
302
303			static void
304			module_exit(void)
305			{
306			mod_del_cmd(&connect_msgtab);
307			}
308
309			struct module module_entry = {
310			.node = { NULL, NULL, NULL },
311			.name = NULL,
312			.version = "$Revision$",
313			.handle = NULL,
314			.modinit = module_init,
315			.modexit = module_exit,
316			.flags = 0
317			};