ircd-hybrid/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 "numeric.h"
#include "s_conf.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, 0, MFLG_SLOW, 0,
  { m_unregistered, m_not_oper, ms_connect, m_ignore, mo_connect, m_ignore }
};

#ifndef STATIC_MODULES
void
_modinit(void)
{
  mod_add_cmd(&connect_msgtab);
}

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

const char *_version = "$Revision$";
#endif

/*! \brief CONNECT command handler (called for operators only)
 *
 * \param client_p Pointer to allocated Client struct with physical connection
 *                 to this server, i.e. with an open socket connected.
 * \param source_p Pointer to allocated Client struct from which the message
 *                 originally comes from.  This can be a local or remote client.
 * \param parc     Integer holding the number of supplied arguments.
 * \param parv     Argument vector where parv[0] .. parv[parc-1] are non-NULL
 *                 pointers.
 * \note Valid arguments for this command are:
 *      - 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 = 0;
  struct ConfItem *conf = NULL;
  struct AccessItem *aconf = NULL;
  struct Client *target_p = NULL;

  /* 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, "connect");
    return;
  }

  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 = 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 = &conf->conf.AccessItem;
  else if ((conf = find_matching_name_conf(SERVER_TYPE,
                                           NULL, NULL, parv[1], 0)) != NULL)
    aconf = &conf->conf.AccessItem;
  
  if (conf == 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 from configuration structure.
   */
  port = aconf->port;

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

  if (port <= 0 || port > 0xFFFF)
  {
    sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal or 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] : "");

  /*
   * At this point we should be calling connect_server with a valid
   * connect{} and a valid port in the connect{}
   */
  if (serv_connect(aconf, source_p, port))
  {
    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, port);
    else
      sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
                 me.name, source_p->name, conf->name, port);
  }
  else
  {
    sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
               me.name, source_p->name, conf->name, port);
  }

  /*
   * Client is either connecting with all the data it needs or has been
   * destroyed
   */
}

/*! \brief CONNECT command handler (called for remote clients only)
 *
 * \param client_p Pointer to allocated Client struct with physical connection
 *                 to this server, i.e. with an open socket connected.
 * \param source_p Pointer to allocated Client struct from which the message
 *                 originally comes from.  This can be a local or remote client.
 * \param parc     Integer holding the number of supplied arguments.
 * \param parv     Argument vector where parv[0] .. parv[parc-1] are non-NULL
 *                 pointers.
 * \note Valid arguments for this command are:
 *      - 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 = 0;
  struct ConfItem *conf = NULL;
  struct AccessItem *aconf = NULL;
  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 = 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 = &conf->conf.AccessItem;
  else if ((conf = find_matching_name_conf(SERVER_TYPE,
                                           NULL, NULL, parv[1], 0)) != NULL)
    aconf = &conf->conf.AccessItem;

  if (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;
  }

  assert(aconf != NULL);

  /*
   * Get port number from user, if given. If not specified,
   * use the default from configuration structure.
   */
  port = aconf->port;

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

    /* if someone sends port 0, use the config port instead */
    if (port == 0)
      port = aconf->port;
  }

  if (port <= 0 || port > 0xFFFF)
  {
    sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal or 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, NULL, NOCAPS, NOCAPS, NOFLAGS,
                ":%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);

  /*
   * At this point we should be calling connect_server with a valid
   * connect{} and a valid port in the connect{}
   */
  if (serv_connect(aconf, source_p, port))
    sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
               me.name, source_p->name, conf->name, port);
  else
    sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
               me.name, source_p->name, conf->name, port);

  /*
   * Client is either connecting with all the data it needs or has been
   * destroyed
   */
}
Revision:	374
Committed:	Sat Jan 14 17:57:18 2006 UTC (19 years, 7 months ago) by michael
Content type:	text/x-csrc
File size:	9360 byte(s)
Log Message:	- More m_connect cleanups, I also never liked the idea of temporarily modifying a connect item, so let's do this a bit different now.
#	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 "numeric.h"
30			#include "s_conf.h"
31			#include "s_serv.h"
32			#include "send.h"
33			#include "msg.h"
34			#include "parse.h"
35			#include "hash.h"
36			#include "modules.h"
37
38	michael	348	static void mo_connect(struct Client , struct Client , int, char *[]);
39			static void ms_connect(struct Client , struct Client , int, char *[]);
40	adx	30
41			struct Message connect_msgtab = {
42			"CONNECT", 0, 0, 2, 0, MFLG_SLOW, 0,
43	michael	348	{ m_unregistered, m_not_oper, ms_connect, m_ignore, mo_connect, m_ignore }
44	adx	30	};
45
46			#ifndef STATIC_MODULES
47			void
48			_modinit(void)
49			{
50			mod_add_cmd(&connect_msgtab);
51			}
52
53			void
54			_moddeinit(void)
55			{
56			mod_del_cmd(&connect_msgtab);
57			}
58
59	knight	31	const char *_version = "$Revision$";
60	adx	30	#endif
61
62	michael	348	/*! \brief CONNECT command handler (called for operators only)
63	adx	30	*
64	michael	348	* \param client_p Pointer to allocated Client struct with physical connection
65			* to this server, i.e. with an open socket connected.
66			* \param source_p Pointer to allocated Client struct from which the message
67			* originally comes from. This can be a local or remote client.
68			* \param parc Integer holding the number of supplied arguments.
69			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
70			* pointers.
71			* \note Valid arguments for this command are:
72			* - parv[0] = sender prefix
73			* - parv[1] = servername
74			* - parv[2] = port number
75			* - parv[3] = remote server
76	adx	30	*/
77			static void
78	michael	374	mo_connect(struct Client client_p, struct Client source_p,
79			int parc, char *parv[])
80	adx	30	{
81	michael	374	int port = 0;
82	adx	30	struct ConfItem *conf = NULL;
83			struct AccessItem *aconf = NULL;
84	michael	374	struct Client *target_p = NULL;
85	adx	30
86			/* always privileged with handlers */
87			if (MyConnect(source_p) && !IsOperRemote(source_p) && parc > 3)
88			{
89			sendto_one(source_p, form_str(ERR_NOPRIVS),
90			me.name, source_p->name, "connect");
91			return;
92			}
93
94	michael	348	if (hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3,
95			parc, parv) != HUNTED_ISME)
96	adx	30	return;
97
98			if (*parv[1] == '\0')
99			{
100			sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
101			me.name, source_p->name, "CONNECT");
102			return;
103			}
104
105			if ((target_p = find_server(parv[1])))
106			{
107			sendto_one(source_p,
108	michael	373	":%s NOTICE %s :Connect: Server %s already exists from %s.",
109	adx	30	me.name, source_p->name, parv[1], target_p->from->name);
110			return;
111			}
112
113			/*
114	michael	373	* Try to find the name, then host, if both fail notify ops and bail
115	adx	30	*/
116			if ((conf = find_matching_name_conf(SERVER_TYPE,
117	michael	373	parv[1], NULL, NULL, 0)) != NULL)
118	db	139	aconf = &conf->conf.AccessItem;
119	adx	30	else if ((conf = find_matching_name_conf(SERVER_TYPE,
120	michael	373	NULL, NULL, parv[1], 0)) != NULL)
121	db	139	aconf = &conf->conf.AccessItem;
122	adx	30
123			if (conf == NULL)
124			{
125			sendto_one(source_p,
126	michael	373	":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
127			me.name, source_p->name, parv[1]);
128	adx	30	return;
129			}
130	michael	373
131			/*
132			* Get port number from user, if given. If not specified,
133			* use the default from configuration structure.
134	adx	30	*/
135	michael	374	port = aconf->port;
136	adx	30
137			if (parc > 2 && !EmptyString(parv[2]))
138	michael	374	port = atoi(parv[2]);
139
140			if (port <= 0 \|\| port > 0xFFFF)
141	adx	30	{
142	michael	374	sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal or missing port number",
143	adx	30	me.name, source_p->name);
144			return;
145			}
146
147			if (find_servconn_in_progress(conf->name))
148			{
149			sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
150			"is already in progress.", me.name, source_p->name, conf->name);
151			return;
152			}
153
154			/*
155			* Notify all operators about remote connect requests
156			*/
157			ilog(L_TRACE, "CONNECT From %s : %s %s",
158			source_p->name, parv[1], parv[2] ? parv[2] : "");
159
160	michael	373	/*
161			* At this point we should be calling connect_server with a valid
162			* connect{} and a valid port in the connect{}
163	adx	30	*/
164	michael	374	if (serv_connect(aconf, source_p, port))
165	adx	30	{
166			if (!ConfigServerHide.hide_server_ips && IsAdmin(source_p))
167			sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s[%s].%d",
168			me.name, source_p->name, aconf->host,
169	michael	374	conf->name, port);
170	adx	30	else
171			sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
172	michael	374	me.name, source_p->name, conf->name, port);
173	adx	30	}
174			else
175			{
176			sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
177	michael	374	me.name, source_p->name, conf->name, port);
178	adx	30	}
179
180	michael	348	/*
181	michael	373	* Client is either connecting with all the data it needs or has been
182	adx	30	* destroyed
183			*/
184			}
185
186	michael	348	/*! \brief CONNECT command handler (called for remote clients only)
187	adx	30	*
188	michael	348	* \param client_p Pointer to allocated Client struct with physical connection
189			* to this server, i.e. with an open socket connected.
190			* \param source_p Pointer to allocated Client struct from which the message
191			* originally comes from. This can be a local or remote client.
192			* \param parc Integer holding the number of supplied arguments.
193			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
194			* pointers.
195			* \note Valid arguments for this command are:
196			* - parv[0] = sender prefix
197			* - parv[1] = servername
198			* - parv[2] = port number
199			* - parv[3] = remote server
200	adx	30	*/
201			static void
202			ms_connect(struct Client client_p, struct Client source_p,
203			int parc, char *parv[])
204			{
205	michael	374	int port = 0;
206	adx	30	struct ConfItem *conf = NULL;
207			struct AccessItem *aconf = NULL;
208	michael	374	struct Client *target_p = NULL;
209	adx	30
210	michael	348	if (hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3,
211			parc, parv) != HUNTED_ISME)
212	adx	30	return;
213
214			if (*parv[1] == '\0')
215			{
216			sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
217			me.name, source_p->name, "CONNECT");
218			return;
219			}
220
221			if ((target_p = find_server(parv[1])))
222			{
223			sendto_one(source_p,
224	michael	373	":%s NOTICE %s :Connect: Server %s already exists from %s.",
225	adx	30	me.name, source_p->name, parv[1], target_p->from->name);
226			return;
227			}
228
229			/*
230	michael	373	* Try to find the name, then host, if both fail notify ops and bail
231	adx	30	*/
232			if ((conf = find_matching_name_conf(SERVER_TYPE,
233	michael	373	parv[1], NULL, NULL, 0)) != NULL)
234	db	139	aconf = &conf->conf.AccessItem;
235	adx	30	else if ((conf = find_matching_name_conf(SERVER_TYPE,
236	michael	373	NULL, NULL, parv[1], 0)) != NULL)
237	db	139	aconf = &conf->conf.AccessItem;
238	adx	30
239			if (aconf == NULL)
240			{
241			sendto_one(source_p,
242	michael	373	":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
243			me.name, source_p->name, parv[1]);
244	adx	30	return;
245			}
246
247			assert(aconf != NULL);
248
249	michael	373	/*
250			* Get port number from user, if given. If not specified,
251			* use the default from configuration structure.
252	adx	30	*/
253	michael	374	port = aconf->port;
254	adx	30
255			if (parc > 2 && !EmptyString(parv[2]))
256			{
257			port = atoi(parv[2]);
258
259	michael	374	/* if someone sends port 0, use the config port instead */
260			if (port == 0)
261	adx	30	port = aconf->port;
262			}
263	michael	374
264			if (port <= 0 \|\| port > 0xFFFF)
265	adx	30	{
266	michael	374	sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal or missing port number",
267	adx	30	me.name, source_p->name);
268			return;
269			}
270
271			if (find_servconn_in_progress(conf->name))
272			{
273			sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
274			"is already in progress.", me.name, source_p->name, conf->name);
275			return;
276			}
277
278			/*
279			* Notify all operators about remote connect requests
280			*/
281			sendto_wallops_flags(UMODE_WALLOP, &me, "Remote CONNECT %s %d from %s",
282			parv[1], port, source_p->name);
283			sendto_server(NULL, NULL, NULL, NOCAPS, NOCAPS, NOFLAGS,
284			":%s WALLOPS :Remote CONNECT %s %d from %s",
285			me.name, parv[1], port, source_p->name);
286
287			ilog(L_TRACE, "CONNECT From %s : %s %d",
288			source_p->name, parv[1], port);
289
290	michael	373	/*
291			* At this point we should be calling connect_server with a valid
292			* connect{} and a valid port in the connect{}
293	adx	30	*/
294	michael	374	if (serv_connect(aconf, source_p, port))
295	adx	30	sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
296	michael	374	me.name, source_p->name, conf->name, port);
297	adx	30	else
298			sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
299	michael	374	me.name, source_p->name, conf->name, port);
300	michael	348
301			/*
302	michael	373	* Client is either connecting with all the data it needs or has been
303	adx	30	* destroyed
304			*/
305			}