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 "conf/conf.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"

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 }
};

INIT_MODULE(m_connect, "$Revision$")
{
  mod_add_cmd(&connect_msgtab);
}

CLEANUP_MODULE
{
  mod_del_cmd(&connect_msgtab);
}

/*! \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(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 = 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",
       get_oper_name(source_p), 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(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 = 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,
                ":%s WALLOPS :Remote CONNECT %s %d from %s",
                me.name, parv[1], port, source_p->name);

  ilog(L_TRACE, "CONNECT From %s : %s %d", 
       get_oper_name(source_p), 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:	719
Committed:	Sun Jul 16 16:56:58 2006 UTC (20 years ago) by adx
Content type:	text/x-csrc
File size:	9291 byte(s)
Log Message:	+ reworked operator{} blocks to make them independent from oldconf + moved some utilities from s_conf.* to libio + added stub for auth{} blocks
#	Content
1	/*
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	* $Id$
23	*/
24
25	#include "stdinc.h"
26	#include "conf/conf.h"
27	#include "handlers.h"
28	#include "client.h"
29	#include "ircd.h"
30	#include "numeric.h"
31	#include "s_conf.h"
32	#include "s_serv.h"
33	#include "send.h"
34	#include "msg.h"
35	#include "parse.h"
36	#include "hash.h"
37
38	static void mo_connect(struct Client , struct Client , int, char *[]);
39	static void ms_connect(struct Client , struct Client , int, char *[]);
40
41	struct Message connect_msgtab = {
42	"CONNECT", 0, 0, 2, 0, MFLG_SLOW, 0,
43	{ m_unregistered, m_not_oper, ms_connect, m_ignore, mo_connect, m_ignore }
44	};
45
46	INIT_MODULE(m_connect, "$Revision$")
47	{
48	mod_add_cmd(&connect_msgtab);
49	}
50
51	CLEANUP_MODULE
52	{
53	mod_del_cmd(&connect_msgtab);
54	}
55
56	/*! \brief CONNECT command handler (called for operators only)
57	*
58	* \param client_p Pointer to allocated Client struct with physical connection
59	* to this server, i.e. with an open socket connected.
60	* \param source_p Pointer to allocated Client struct from which the message
61	* originally comes from. This can be a local or remote client.
62	* \param parc Integer holding the number of supplied arguments.
63	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
64	* pointers.
65	* \note Valid arguments for this command are:
66	* - parv[0] = sender prefix
67	* - parv[1] = servername
68	* - parv[2] = port number
69	* - parv[3] = remote server
70	*/
71	static void
72	mo_connect(struct Client client_p, struct Client source_p,
73	int parc, char *parv[])
74	{
75	int port = 0;
76	struct ConfItem *conf = NULL;
77	struct AccessItem *aconf = NULL;
78	struct Client *target_p = NULL;
79
80	/* always privileged with handlers */
81	if (MyConnect(source_p) && !IsOperRemote(source_p) && parc > 3)
82	{
83	sendto_one(source_p, form_str(ERR_NOPRIVS),
84	me.name, source_p->name, "connect");
85	return;
86	}
87
88	if (hunt_server(source_p, ":%s CONNECT %s %s :%s", 3,
89	parc, parv) != HUNTED_ISME)
90	return;
91
92	if (EmptyString(parv[1]))
93	{
94	sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
95	me.name, source_p->name, "CONNECT");
96	return;
97	}
98
99	if ((target_p = find_server(parv[1])))
100	{
101	sendto_one(source_p,
102	":%s NOTICE %s :Connect: Server %s already exists from %s.",
103	me.name, source_p->name, parv[1], target_p->from->name);
104	return;
105	}
106
107	/*
108	* Try to find the name, then host, if both fail notify ops and bail
109	*/
110	if ((conf = find_matching_name_conf(SERVER_TYPE,
111	parv[1], NULL, NULL, 0)) != NULL)
112	aconf = &conf->conf.AccessItem;
113	else if ((conf = find_matching_name_conf(SERVER_TYPE,
114	NULL, NULL, parv[1], 0)) != NULL)
115	aconf = &conf->conf.AccessItem;
116
117	if (conf == NULL)
118	{
119	sendto_one(source_p,
120	":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
121	me.name, source_p->name, parv[1]);
122	return;
123	}
124
125	/*
126	* Get port number from user, if given. If not specified,
127	* use the default from configuration structure.
128	*/
129	port = aconf->port;
130
131	if (parc > 2 && !EmptyString(parv[2]))
132	port = atoi(parv[2]);
133
134	if (port <= 0 \|\| port > 0xFFFF)
135	{
136	sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal or missing port number",
137	me.name, source_p->name);
138	return;
139	}
140
141	if (find_servconn_in_progress(conf->name))
142	{
143	sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
144	"is already in progress.", me.name, source_p->name, conf->name);
145	return;
146	}
147
148	/*
149	* Notify all operators about remote connect requests
150	*/
151	ilog(L_TRACE, "CONNECT From %s : %s %s",
152	get_oper_name(source_p), parv[1], parv[2] ? parv[2] : "");
153
154	/*
155	* At this point we should be calling connect_server with a valid
156	* connect{} and a valid port in the connect{}
157	*/
158	if (serv_connect(aconf, source_p, port))
159	{
160	if (!ConfigServerHide.hide_server_ips && IsAdmin(source_p))
161	sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s[%s].%d",
162	me.name, source_p->name, aconf->host,
163	conf->name, port);
164	else
165	sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
166	me.name, source_p->name, conf->name, port);
167	}
168	else
169	sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
170	me.name, source_p->name, conf->name, port);
171	/*
172	* Client is either connecting with all the data it needs or has been
173	* destroyed
174	*/
175	}
176
177	/*! \brief CONNECT command handler (called for remote clients only)
178	*
179	* \param client_p Pointer to allocated Client struct with physical connection
180	* to this server, i.e. with an open socket connected.
181	* \param source_p Pointer to allocated Client struct from which the message
182	* originally comes from. This can be a local or remote client.
183	* \param parc Integer holding the number of supplied arguments.
184	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
185	* pointers.
186	* \note Valid arguments for this command are:
187	* - parv[0] = sender prefix
188	* - parv[1] = servername
189	* - parv[2] = port number
190	* - parv[3] = remote server
191	*/
192	static void
193	ms_connect(struct Client client_p, struct Client source_p,
194	int parc, char *parv[])
195	{
196	int port = 0;
197	struct ConfItem *conf = NULL;
198	struct AccessItem *aconf = NULL;
199	struct Client *target_p = NULL;
200
201	if (hunt_server(source_p, ":%s CONNECT %s %s :%s", 3,
202	parc, parv) != HUNTED_ISME)
203	return;
204
205	if (EmptyString(parv[1]))
206	{
207	sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
208	me.name, source_p->name, "CONNECT");
209	return;
210	}
211
212	if ((target_p = find_server(parv[1])))
213	{
214	sendto_one(source_p,
215	":%s NOTICE %s :Connect: Server %s already exists from %s.",
216	me.name, source_p->name, parv[1], target_p->from->name);
217	return;
218	}
219
220	/*
221	* Try to find the name, then host, if both fail notify ops and bail
222	*/
223	if ((conf = find_matching_name_conf(SERVER_TYPE,
224	parv[1], NULL, NULL, 0)) != NULL)
225	aconf = &conf->conf.AccessItem;
226	else if ((conf = find_matching_name_conf(SERVER_TYPE,
227	NULL, NULL, parv[1], 0)) != NULL)
228	aconf = &conf->conf.AccessItem;
229
230	if (aconf == NULL)
231	{
232	sendto_one(source_p,
233	":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
234	me.name, source_p->name, parv[1]);
235	return;
236	}
237
238	assert(aconf != NULL);
239
240	/*
241	* Get port number from user, if given. If not specified,
242	* use the default from configuration structure.
243	*/
244	port = aconf->port;
245
246	if (parc > 2 && !EmptyString(parv[2]))
247	{
248	port = atoi(parv[2]);
249
250	/* if someone sends port 0, use the config port instead */
251	if (port == 0)
252	port = aconf->port;
253	}
254
255	if (port <= 0 \|\| port > 0xFFFF)
256	{
257	sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal or missing port number",
258	me.name, source_p->name);
259	return;
260	}
261
262	if (find_servconn_in_progress(conf->name))
263	{
264	sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
265	"is already in progress.", me.name, source_p->name, conf->name);
266	return;
267	}
268
269	/*
270	* Notify all operators about remote connect requests
271	*/
272	sendto_wallops_flags(UMODE_WALLOP, &me, "Remote CONNECT %s %d from %s",
273	parv[1], port, source_p->name);
274	sendto_server(NULL, NULL, NULL, NOCAPS, NOCAPS,
275	":%s WALLOPS :Remote CONNECT %s %d from %s",
276	me.name, parv[1], port, source_p->name);
277
278	ilog(L_TRACE, "CONNECT From %s : %s %d",
279	get_oper_name(source_p), parv[1], port);
280
281	/*
282	* At this point we should be calling connect_server with a valid
283	* connect{} and a valid port in the connect{}
284	*/
285	if (serv_connect(aconf, source_p, port))
286	sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
287	me.name, source_p->name, conf->name, port);
288	else
289	sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
290	me.name, source_p->name, conf->name, port);
291
292	/*
293	* Client is either connecting with all the data it needs or has been
294	* destroyed
295	*/
296	}