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 "handlers.h"
#include "client.h"
#include "ircd.h"
#include "irc_string.h"
#include "numeric.h"
#include "fdlist.h"
#include "s_bsd.h"
#include "s_conf.h"
#include "s_log.h"
#include "s_serv.h"
#include "send.h"
#include "msg.h"
#include "parse.h"
#include "hash.h"
#include "modules.h"

static void mo_connect(struct Client *, struct Client *, int, char *[]);
static void ms_connect(struct Client *, struct Client *, int, char *[]);

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 }
};

void
_modinit(void)
{
  mod_add_cmd(&connect_msgtab);
}

void
_moddeinit(void)
{
  mod_del_cmd(&connect_msgtab);
}

const char *_version = "$Revision$";

/*
 * 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 ConfItem *conf = NULL;
  struct AccessItem *aconf = 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 (!IsOperRemote(source_p))
    {
      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(SERVER_TYPE,
                                      parv[1], NULL, NULL, 0)) != NULL)
    aconf = (struct AccessItem *)map_to_conf(conf);
  else if ((conf = find_matching_name_conf(SERVER_TYPE,
                                           NULL, NULL, parv[1], 0)) != NULL)
    aconf = (struct AccessItem *)map_to_conf(conf);
  
  if (conf == NULL || aconf == NULL)
  {
    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 = aconf->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(L_TRACE, "CONNECT From %s : %s %s", 
       source_p->name, parv[1], parv[2] ? parv[2] : "");

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

  /* client is either connecting with all the data it needs or has been
   * destroyed
   */
  aconf->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 ConfItem *conf = NULL;
  struct AccessItem *aconf = 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 (*parv[1] == '\0')
  {
    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(SERVER_TYPE,
                                      parv[1], NULL, NULL, 0)) != NULL)
    aconf = map_to_conf(conf);
  else if ((conf = find_matching_name_conf(SERVER_TYPE,
                                           NULL, NULL, parv[1], 0)) != NULL)
    aconf = map_to_conf(conf);

  if (conf == NULL || aconf == NULL)
  {
    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 = aconf->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 && aconf->port)
      port = aconf->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, NULL, NOCAPS, NOCAPS,
                ":%s WALLOPS :Remote CONNECT %s %d from %s",
                me.name, parv[1], port, source_p->name);

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

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

Revision:	1178
Committed:	Mon Aug 15 08:11:31 2011 UTC (14 years ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-8/modules/m_connect.c*
File size:	8829 byte(s)
Log Message:	- Cleanup and restore older parts of the irc-command parser. Gives back ability to specify maximum amount of parameters that are processed within a command.
#	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 "handlers.h"
27			#include "client.h"
28			#include "ircd.h"
29			#include "irc_string.h"
30			#include "numeric.h"
31			#include "fdlist.h"
32			#include "s_bsd.h"
33			#include "s_conf.h"
34			#include "s_log.h"
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"
41
42	michael	971	static void mo_connect(struct Client , struct Client , int, char *[]);
43			static void ms_connect(struct Client , struct Client , int, char *[]);
44	adx	30
45			struct Message connect_msgtab = {
46	michael	1178	"CONNECT", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
47	michael	971	{ m_unregistered, m_not_oper, ms_connect, m_ignore, mo_connect, m_ignore }
48	adx	30	};
49
50			void
51			_modinit(void)
52			{
53			mod_add_cmd(&connect_msgtab);
54			}
55
56			void
57			_moddeinit(void)
58			{
59			mod_del_cmd(&connect_msgtab);
60			}
61
62	knight	31	const char *_version = "$Revision$";
63	adx	30
64			/*
65			* mo_connect - CONNECT command handler
66			*
67			* Added by Jto 11 Feb 1989
68			*
69			* m_connect
70			* parv[0] = sender prefix
71			* parv[1] = servername
72			* parv[2] = port number
73			* parv[3] = remote server
74			*/
75			static void
76	michael	971	mo_connect(struct Client client_p, struct Client source_p,
77			int parc, char *parv[])
78	adx	30	{
79			int port;
80			int tmpport;
81			struct ConfItem *conf = NULL;
82			struct AccessItem *aconf = NULL;
83	michael	971	const struct Client *target_p = NULL;
84	adx	30
85	michael	971	if (EmptyString(parv[1]))
86	adx	30	{
87	michael	971	sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
88			me.name, source_p->name, "CONNECT");
89	adx	30	return;
90			}
91
92	michael	971	if (parc > 3)
93			{
94			if (!IsOperRemote(source_p))
95			{
96			sendto_one(source_p, form_str(ERR_NOPRIVS),
97			me.name, source_p->name, "connect");
98			return;
99			}
100	adx	30
101	michael	971	if (hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3,
102			parc, parv) != HUNTED_ISME)
103			return;
104	adx	30	}
105
106	michael	1169	if ((target_p = hash_find_server(parv[1])))
107	adx	30	{
108			sendto_one(source_p,
109			":%s NOTICE %s :Connect: Server %s already exists from %s.",
110			me.name, source_p->name, parv[1], target_p->from->name);
111			return;
112			}
113
114			/*
115			* try to find the name, then host, if both fail notify ops and bail
116			*/
117			if ((conf = find_matching_name_conf(SERVER_TYPE,
118			parv[1], NULL, NULL, 0)) != NULL)
119			aconf = (struct AccessItem *)map_to_conf(conf);
120			else if ((conf = find_matching_name_conf(SERVER_TYPE,
121			NULL, NULL, parv[1], 0)) != NULL)
122			aconf = (struct AccessItem *)map_to_conf(conf);
123
124	michael	971	if (conf == NULL \|\| aconf == NULL)
125	adx	30	{
126			sendto_one(source_p,
127			":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
128			me.name, source_p->name, parv[1]);
129			return;
130			}
131	michael	971
132	adx	30	/* Get port number from user, if given. If not specified,
133			* use the default form configuration structure. If missing
134			* from there, then use the precompiled default.
135			*/
136			tmpport = port = aconf->port;
137
138			if (parc > 2 && !EmptyString(parv[2]))
139			{
140			if ((port = atoi(parv[2])) <= 0)
141			{
142			sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal port number",
143			me.name, source_p->name);
144			return;
145			}
146			}
147			else if (port <= 0 && (port = PORTNUM) <= 0)
148			{
149			sendto_one(source_p, ":%s NOTICE %s :Connect: missing port number",
150			me.name, source_p->name);
151			return;
152			}
153
154			if (find_servconn_in_progress(conf->name))
155			{
156			sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
157			"is already in progress.", me.name, source_p->name, conf->name);
158			return;
159			}
160
161			/*
162			* Notify all operators about remote connect requests
163			*/
164			ilog(L_TRACE, "CONNECT From %s : %s %s",
165			source_p->name, parv[1], parv[2] ? parv[2] : "");
166
167			aconf->port = port;
168
169			/* at this point we should be calling connect_server with a valid
170			* C:line and a valid port in the C:line
171			*/
172			if (serv_connect(aconf, source_p))
173			{
174			if (!ConfigServerHide.hide_server_ips && IsAdmin(source_p))
175			sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s[%s].%d",
176			me.name, source_p->name, aconf->host,
177			conf->name, aconf->port);
178			else
179			sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
180			me.name, source_p->name, conf->name, aconf->port);
181			}
182			else
183			{
184			sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
185			me.name, source_p->name, conf->name, aconf->port);
186			}
187
188			/* client is either connecting with all the data it needs or has been
189			* destroyed
190			*/
191			aconf->port = tmpport;
192			}
193
194			/*
195			* ms_connect - CONNECT command handler
196			*
197			* Added by Jto 11 Feb 1989
198			*
199			* m_connect
200			* parv[0] = sender prefix
201			* parv[1] = servername
202			* parv[2] = port number
203			* parv[3] = remote server
204			*/
205			static void
206			ms_connect(struct Client client_p, struct Client source_p,
207			int parc, char *parv[])
208			{
209			int port;
210			int tmpport;
211			struct ConfItem *conf = NULL;
212			struct AccessItem *aconf = NULL;
213	michael	971	const struct Client *target_p = NULL;
214	adx	30
215			if (hunt_server(client_p, source_p,
216			":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
217			return;
218
219			if (*parv[1] == '\0')
220			{
221			sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
222			me.name, source_p->name, "CONNECT");
223			return;
224			}
225
226	michael	1169	if ((target_p = hash_find_server(parv[1])))
227	adx	30	{
228			sendto_one(source_p,
229			":%s NOTICE %s :Connect: Server %s already exists from %s.",
230			me.name, source_p->name, parv[1], target_p->from->name);
231			return;
232			}
233
234			/*
235			* try to find the name, then host, if both fail notify ops and bail
236			*/
237			if ((conf = find_matching_name_conf(SERVER_TYPE,
238			parv[1], NULL, NULL, 0)) != NULL)
239	michael	971	aconf = map_to_conf(conf);
240	adx	30	else if ((conf = find_matching_name_conf(SERVER_TYPE,
241			NULL, NULL, parv[1], 0)) != NULL)
242	michael	971	aconf = map_to_conf(conf);
243	adx	30
244	michael	971	if (conf == NULL \|\| aconf == NULL)
245	adx	30	{
246			sendto_one(source_p,
247			":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
248			me.name, source_p->name, parv[1]);
249			return;
250			}
251
252			/* Get port number from user, if given. If not specified,
253			* use the default form configuration structure. If missing
254			* from there, then use the precompiled default.
255			*/
256			tmpport = port = aconf->port;
257
258			if (parc > 2 && !EmptyString(parv[2]))
259			{
260			port = atoi(parv[2]);
261
262			/* if someone sends port 0, and we have a config port.. use it */
263			if (port == 0 && aconf->port)
264			port = aconf->port;
265			else if (port <= 0)
266			{
267			sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal port number",
268			me.name, source_p->name);
269			return;
270			}
271			}
272			else if (port <= 0 && (port = PORTNUM) <= 0)
273			{
274			sendto_one(source_p, ":%s NOTICE %s :Connect: missing port number",
275			me.name, source_p->name);
276			return;
277			}
278
279			if (find_servconn_in_progress(conf->name))
280			{
281			sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
282			"is already in progress.", me.name, source_p->name, conf->name);
283			return;
284			}
285
286			/*
287			* Notify all operators about remote connect requests
288			*/
289			sendto_wallops_flags(UMODE_WALLOP, &me, "Remote CONNECT %s %d from %s",
290			parv[1], port, source_p->name);
291	michael	885	sendto_server(NULL, NULL, NOCAPS, NOCAPS,
292	adx	30	":%s WALLOPS :Remote CONNECT %s %d from %s",
293			me.name, parv[1], port, source_p->name);
294
295			ilog(L_TRACE, "CONNECT From %s : %s %d",
296			source_p->name, parv[1], port);
297
298			aconf->port = port;
299
300	michael	885	/*
301			* At this point we should be calling connect_server with a valid
302	adx	30	* C:line and a valid port in the C:line
303			*/
304			if (serv_connect(aconf, source_p))
305			sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
306			me.name, source_p->name, conf->name, aconf->port);
307			else
308			sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
309			me.name, source_p->name, conf->name, aconf->port);
310	michael	885	/*
311			* Client is either connecting with all the data it needs or has been
312	adx	30	* destroyed
313			*/
314			aconf->port = tmpport;
315			}
316