ircd-hybrid-8.0.0beta1/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"


/*
 * 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 (!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(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 && HasUMode(source_p, UMODE_ADMIN))
      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;
}

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:	1230
Committed:	Thu Sep 22 19:41:19 2011 UTC (15 years ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-8/modules/m_connect.c*
File size:	8899 byte(s)
Log Message:	- cleanup module loader. Make module api more flexible
#	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
43			/*
44			* mo_connect - CONNECT command handler
45			*
46			* Added by Jto 11 Feb 1989
47			*
48			* m_connect
49			* parv[0] = sender prefix
50			* parv[1] = servername
51			* parv[2] = port number
52			* parv[3] = remote server
53			*/
54			static void
55	michael	971	mo_connect(struct Client client_p, struct Client source_p,
56			int parc, char *parv[])
57	adx	30	{
58			int port;
59			int tmpport;
60			struct ConfItem *conf = NULL;
61			struct AccessItem *aconf = NULL;
62	michael	971	const struct Client *target_p = NULL;
63	adx	30
64	michael	971	if (EmptyString(parv[1]))
65	adx	30	{
66	michael	971	sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
67			me.name, source_p->name, "CONNECT");
68	adx	30	return;
69			}
70
71	michael	971	if (parc > 3)
72			{
73	michael	1219	if (!HasOFlag(source_p, OPER_FLAG_REMOTE))
74	michael	971	{
75			sendto_one(source_p, form_str(ERR_NOPRIVS),
76			me.name, source_p->name, "connect");
77			return;
78			}
79	adx	30
80	michael	971	if (hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3,
81			parc, parv) != HUNTED_ISME)
82			return;
83	adx	30	}
84
85	michael	1169	if ((target_p = hash_find_server(parv[1])))
86	adx	30	{
87			sendto_one(source_p,
88			":%s NOTICE %s :Connect: Server %s already exists from %s.",
89			me.name, source_p->name, parv[1], target_p->from->name);
90			return;
91			}
92
93			/*
94			* try to find the name, then host, if both fail notify ops and bail
95			*/
96			if ((conf = find_matching_name_conf(SERVER_TYPE,
97			parv[1], NULL, NULL, 0)) != NULL)
98			aconf = (struct AccessItem *)map_to_conf(conf);
99			else if ((conf = find_matching_name_conf(SERVER_TYPE,
100			NULL, NULL, parv[1], 0)) != NULL)
101			aconf = (struct AccessItem *)map_to_conf(conf);
102
103	michael	971	if (conf == NULL \|\| aconf == NULL)
104	adx	30	{
105			sendto_one(source_p,
106			":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
107			me.name, source_p->name, parv[1]);
108			return;
109			}
110	michael	971
111	adx	30	/* 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			*/
115			tmpport = port = aconf->port;
116
117			if (parc > 2 && !EmptyString(parv[2]))
118			{
119			if ((port = atoi(parv[2])) <= 0)
120			{
121			sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal port number",
122			me.name, source_p->name);
123			return;
124			}
125			}
126			else if (port <= 0 && (port = PORTNUM) <= 0)
127			{
128			sendto_one(source_p, ":%s NOTICE %s :Connect: missing port number",
129			me.name, source_p->name);
130			return;
131			}
132
133			if (find_servconn_in_progress(conf->name))
134			{
135			sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
136			"is already in progress.", me.name, source_p->name, conf->name);
137			return;
138			}
139
140			/*
141			* Notify all operators about remote connect requests
142			*/
143			ilog(L_TRACE, "CONNECT From %s : %s %s",
144			source_p->name, parv[1], parv[2] ? parv[2] : "");
145
146			aconf->port = port;
147
148			/* at this point we should be calling connect_server with a valid
149			* C:line and a valid port in the C:line
150			*/
151			if (serv_connect(aconf, source_p))
152			{
153	michael	1219	if (!ConfigServerHide.hide_server_ips && HasUMode(source_p, UMODE_ADMIN))
154	adx	30	sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s[%s].%d",
155			me.name, source_p->name, aconf->host,
156			conf->name, aconf->port);
157			else
158			sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
159			me.name, source_p->name, conf->name, aconf->port);
160			}
161			else
162			{
163			sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
164			me.name, source_p->name, conf->name, aconf->port);
165			}
166
167			/* client is either connecting with all the data it needs or has been
168			* destroyed
169			*/
170			aconf->port = tmpport;
171			}
172
173			/*
174			* ms_connect - CONNECT command handler
175			*
176			* Added by Jto 11 Feb 1989
177			*
178			* m_connect
179			* parv[0] = sender prefix
180			* parv[1] = servername
181			* parv[2] = port number
182			* parv[3] = remote server
183			*/
184			static void
185			ms_connect(struct Client client_p, struct Client source_p,
186			int parc, char *parv[])
187			{
188			int port;
189			int tmpport;
190			struct ConfItem *conf = NULL;
191			struct AccessItem *aconf = NULL;
192	michael	971	const struct Client *target_p = NULL;
193	adx	30
194			if (hunt_server(client_p, source_p,
195			":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
196			return;
197
198			if (*parv[1] == '\0')
199			{
200			sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
201			me.name, source_p->name, "CONNECT");
202			return;
203			}
204
205	michael	1169	if ((target_p = hash_find_server(parv[1])))
206	adx	30	{
207			sendto_one(source_p,
208			":%s NOTICE %s :Connect: Server %s already exists from %s.",
209			me.name, source_p->name, parv[1], target_p->from->name);
210			return;
211			}
212
213			/*
214			* try to find the name, then host, if both fail notify ops and bail
215			*/
216			if ((conf = find_matching_name_conf(SERVER_TYPE,
217			parv[1], NULL, NULL, 0)) != NULL)
218	michael	971	aconf = map_to_conf(conf);
219	adx	30	else if ((conf = find_matching_name_conf(SERVER_TYPE,
220			NULL, NULL, parv[1], 0)) != NULL)
221	michael	971	aconf = map_to_conf(conf);
222	adx	30
223	michael	971	if (conf == NULL \|\| aconf == NULL)
224	adx	30	{
225			sendto_one(source_p,
226			":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
227			me.name, source_p->name, parv[1]);
228			return;
229			}
230
231			/* Get port number from user, if given. If not specified,
232			* use the default form configuration structure. If missing
233			* from there, then use the precompiled default.
234			*/
235			tmpport = port = aconf->port;
236
237			if (parc > 2 && !EmptyString(parv[2]))
238			{
239			port = atoi(parv[2]);
240
241			/* if someone sends port 0, and we have a config port.. use it */
242			if (port == 0 && aconf->port)
243			port = aconf->port;
244			else if (port <= 0)
245			{
246			sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal port number",
247			me.name, source_p->name);
248			return;
249			}
250			}
251			else if (port <= 0 && (port = PORTNUM) <= 0)
252			{
253			sendto_one(source_p, ":%s NOTICE %s :Connect: missing port number",
254			me.name, source_p->name);
255			return;
256			}
257
258			if (find_servconn_in_progress(conf->name))
259			{
260			sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
261			"is already in progress.", me.name, source_p->name, conf->name);
262			return;
263			}
264
265			/*
266			* Notify all operators about remote connect requests
267			*/
268			sendto_wallops_flags(UMODE_WALLOP, &me, "Remote CONNECT %s %d from %s",
269			parv[1], port, source_p->name);
270	michael	885	sendto_server(NULL, NULL, NOCAPS, NOCAPS,
271	adx	30	":%s WALLOPS :Remote CONNECT %s %d from %s",
272			me.name, parv[1], port, source_p->name);
273
274			ilog(L_TRACE, "CONNECT From %s : %s %d",
275			source_p->name, parv[1], port);
276
277			aconf->port = port;
278
279	michael	885	/*
280			* At this point we should be calling connect_server with a valid
281	adx	30	* C:line and a valid port in the C:line
282			*/
283			if (serv_connect(aconf, source_p))
284			sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
285			me.name, source_p->name, conf->name, aconf->port);
286			else
287			sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
288			me.name, source_p->name, conf->name, aconf->port);
289	michael	885	/*
290			* Client is either connecting with all the data it needs or has been
291	adx	30	* destroyed
292			*/
293			aconf->port = tmpport;
294			}
295	michael	1230
296			static struct Message connect_msgtab = {
297			"CONNECT", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
298			{ m_unregistered, m_not_oper, ms_connect, m_ignore, mo_connect, m_ignore }
299			};
300
301			static void
302			module_init(void)
303			{
304			mod_add_cmd(&connect_msgtab);
305			}
306
307			static void
308			module_exit(void)
309			{
310			mod_del_cmd(&connect_msgtab);
311			}
312
313			struct module module_entry = {
314			.node = { NULL, NULL, NULL },
315			.name = NULL,
316			.version = "$Revision$",
317			.handle = NULL,
318			.modinit = module_init,
319			.modexit = module_exit,
320			.flags = 0
321			};