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_CONNECT_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;
  }
  else if (!HasOFlag(source_p, OPER_FLAG_CONNECT))
  {
    sendto_one(source_p, form_str(ERR_NOPRIVS),
               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)))
  {
    if  (!(conf = find_matching_name_conf(CONF_SERVER,  NULL, NULL, parv[1], 0)))
    {
      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)))
  { 
    if  (!(conf = find_matching_name_conf(CONF_SERVER,  NULL, NULL, parv[1], 0)))
    {
      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:	2012
Committed:	Sun May 12 14:47:26 2013 UTC (12 years, 3 months ago) by michael
Content type:	text/x-csrc
File size:	8874 byte(s)
Log Message:	- Removed 'remote', and 'global_kill' oper flags, and added 'connect', 'squit', and 'kill' flags for better fine-tuning instead. Whether or not a specific action is allowed on a remote server can be controlled by appeding the ':remote' flag. For example: 'kill' allows only local clients to be killed, whereas 'kill:remote' allows to issue a KILL for remote clients
#	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 "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	#include "conf.h"
33	#include "log.h"
34	#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	mo_connect(struct Client client_p, struct Client source_p,
54	int parc, char *parv[])
55	{
56	int port;
57	int tmpport;
58	struct MaskItem *conf = NULL;
59	const struct Client *target_p = NULL;
60
61	if (EmptyString(parv[1]))
62	{
63	sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
64	me.name, source_p->name, "CONNECT");
65	return;
66	}
67
68	if (parc > 3)
69	{
70	if (!HasOFlag(source_p, OPER_FLAG_CONNECT_REMOTE))
71	{
72	sendto_one(source_p, form_str(ERR_NOPRIVS),
73	me.name, source_p->name, "connect");
74	return;
75	}
76
77	if (hunt_server(client_p, source_p, ":%s CONNECT %s %s :%s", 3,
78	parc, parv) != HUNTED_ISME)
79	return;
80	}
81	else if (!HasOFlag(source_p, OPER_FLAG_CONNECT))
82	{
83	sendto_one(source_p, form_str(ERR_NOPRIVS),
84	me.name, source_p->name, "connect");
85	return;
86	}
87
88	if ((target_p = hash_find_server(parv[1])))
89	{
90	sendto_one(source_p,
91	":%s NOTICE %s :Connect: Server %s already exists from %s.",
92	me.name, source_p->name, parv[1], target_p->from->name);
93	return;
94	}
95
96	/*
97	* try to find the name, then host, if both fail notify ops and bail
98	*/
99	if (!(conf = find_matching_name_conf(CONF_SERVER, parv[1], NULL, NULL, 0)))
100	{
101	if (!(conf = find_matching_name_conf(CONF_SERVER, NULL, NULL, parv[1], 0)))
102	{
103	sendto_one(source_p,
104	":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
105	me.name, source_p->name, parv[1]);
106	return;
107	}
108	}
109
110	/* Get port number from user, if given. If not specified,
111	* use the default form configuration structure. If missing
112	* from there, then use the precompiled default.
113	*/
114	tmpport = port = conf->port;
115
116	if (parc > 2 && !EmptyString(parv[2]))
117	{
118	if ((port = atoi(parv[2])) <= 0)
119	{
120	sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal port number",
121	me.name, source_p->name);
122	return;
123	}
124	}
125	else if (port <= 0 && (port = PORTNUM) <= 0)
126	{
127	sendto_one(source_p, ":%s NOTICE %s :Connect: missing port number",
128	me.name, source_p->name);
129	return;
130	}
131
132	if (find_servconn_in_progress(conf->name))
133	{
134	sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
135	"is already in progress.", me.name, source_p->name, conf->name);
136	return;
137	}
138
139	/*
140	* Notify all operators about remote connect requests
141	*/
142	ilog(LOG_TYPE_IRCD, "CONNECT From %s : %s %s",
143	source_p->name, parv[1], parv[2] ? parv[2] : "");
144
145	conf->port = port;
146
147	/* at this point we should be calling connect_server with a valid
148	* C:line and a valid port in the C:line
149	*/
150	if (serv_connect(conf, source_p))
151	{
152	if (!ConfigServerHide.hide_server_ips && HasUMode(source_p, UMODE_ADMIN))
153	sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s[%s].%d",
154	me.name, source_p->name, conf->host,
155	conf->name, conf->port);
156	else
157	sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
158	me.name, source_p->name, conf->name, conf->port);
159	}
160	else
161	{
162	sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
163	me.name, source_p->name, conf->name, conf->port);
164	}
165
166	/* client is either connecting with all the data it needs or has been
167	* destroyed
168	*/
169	conf->port = tmpport;
170	}
171
172	/*
173	* ms_connect - CONNECT command handler
174	*
175	* Added by Jto 11 Feb 1989
176	*
177	* m_connect
178	* parv[0] = sender prefix
179	* parv[1] = servername
180	* parv[2] = port number
181	* parv[3] = remote server
182	*/
183	static void
184	ms_connect(struct Client client_p, struct Client source_p,
185	int parc, char *parv[])
186	{
187	int port;
188	int tmpport;
189	struct MaskItem *conf = NULL;
190	const struct Client *target_p = NULL;
191
192	if (hunt_server(client_p, source_p,
193	":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
194	return;
195
196	if (EmptyString(parv[1]))
197	{
198	sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
199	me.name, source_p->name, "CONNECT");
200	return;
201	}
202
203	if ((target_p = hash_find_server(parv[1])))
204	{
205	sendto_one(source_p,
206	":%s NOTICE %s :Connect: Server %s already exists from %s.",
207	me.name, source_p->name, parv[1], target_p->from->name);
208	return;
209	}
210
211	/*
212	* try to find the name, then host, if both fail notify ops and bail
213	*/
214	if (!(conf = find_matching_name_conf(CONF_SERVER, parv[1], NULL, NULL, 0)))
215	{
216	if (!(conf = find_matching_name_conf(CONF_SERVER, NULL, NULL, parv[1], 0)))
217	{
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
225	/* Get port number from user, if given. If not specified,
226	* use the default form configuration structure. If missing
227	* from there, then use the precompiled default.
228	*/
229	tmpport = port = conf->port;
230
231	if (parc > 2 && !EmptyString(parv[2]))
232	{
233	port = atoi(parv[2]);
234
235	/* if someone sends port 0, and we have a config port.. use it */
236	if (port == 0 && conf->port)
237	port = conf->port;
238	else if (port <= 0)
239	{
240	sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal port number",
241	me.name, source_p->name);
242	return;
243	}
244	}
245	else if (port <= 0 && (port = PORTNUM) <= 0)
246	{
247	sendto_one(source_p, ":%s NOTICE %s :Connect: missing port number",
248	me.name, source_p->name);
249	return;
250	}
251
252	if (find_servconn_in_progress(conf->name))
253	{
254	sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
255	"is already in progress.", me.name, source_p->name, conf->name);
256	return;
257	}
258
259	/*
260	* Notify all operators about remote connect requests
261	*/
262	sendto_wallops_flags(UMODE_WALLOP, &me, "Remote CONNECT %s %d from %s",
263	parv[1], port, source_p->name);
264	sendto_server(NULL, NOCAPS, CAP_TS6,
265	":%s WALLOPS :Remote CONNECT %s %d from %s",
266	me.name, parv[1], port, source_p->name);
267	sendto_server(NULL, CAP_TS6, NOCAPS,
268	":%s WALLOPS :Remote CONNECT %s %d from %s",
269	me.id, parv[1], port, source_p->name);
270
271	ilog(LOG_TYPE_IRCD, "CONNECT From %s : %s %d",
272	source_p->name, parv[1], port);
273
274	conf->port = port;
275
276	/*
277	* At this point we should be calling connect_server with a valid
278	* C:line and a valid port in the C:line
279	*/
280	if (serv_connect(conf, source_p))
281	sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
282	me.name, source_p->name, conf->name, conf->port);
283	else
284	sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
285	me.name, source_p->name, conf->name, conf->port);
286	/*
287	* Client is either connecting with all the data it needs or has been
288	* destroyed
289	*/
290	conf->port = tmpport;
291	}
292
293	static struct Message connect_msgtab = {
294	"CONNECT", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
295	{ m_unregistered, m_not_oper, ms_connect, m_ignore, mo_connect, m_ignore }
296	};
297
298	static void
299	module_init(void)
300	{
301	mod_add_cmd(&connect_msgtab);
302	}
303
304	static void
305	module_exit(void)
306	{
307	mod_del_cmd(&connect_msgtab);
308	}
309
310	struct module module_entry = {
311	.node = { NULL, NULL, NULL },
312	.name = NULL,
313	.version = "$Revision$",
314	.handle = NULL,
315	.modinit = module_init,
316	.modexit = module_exit,
317	.flags = 0
318	};