8.2.x/modules/m_connect.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2014 ircd-hybrid development team
 *
 *  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
 */

/*! \file m_connect.c
 * \brief Includes required functions for processing the CONNECT command.
 * \version $Id$
 */

#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 "server.h"
#include "send.h"
#include "parse.h"
#include "hash.h"
#include "modules.h"


/*! \brief CONNECT command handler
 *
 * \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] = command
 *      - parv[1] = target server
 *      - parv[2] = port number
 *      - parv[3] = nickname/servername
 */
static int
mo_connect(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_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "CONNECT");
    return 0;
  }

  if (parc > 3)
  {
    if (!HasOFlag(source_p, OPER_FLAG_CONNECT_REMOTE))
    {
      sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "connect:remote");
      return 0;
    }

    if (hunt_server(source_p, ":%s CONNECT %s %s :%s", 3,
                    parc, parv) != HUNTED_ISME)
      return 0;
  }
  else if (!HasOFlag(source_p, OPER_FLAG_CONNECT))
  {
    sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "connect");
    return 0;
  }

  if ((target_p = hash_find_server(parv[1])))
  {
    sendto_one_notice(source_p, &me, ":Connect: Server %s already exists from %s.",
                      parv[1], target_p->from->name);
    return 0;
  }

  /*
   * 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_notice(source_p, &me, ":Connect: Host %s not listed in ircd.conf", parv[1]);
      return 0;
    }
  }

  /*
   * 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_notice(source_p, &me, ":Connect: Illegal port number");
      return 0;
    }
  }
  else if (port <= 0 && (port = PORTNUM) <= 0)
  {
    sendto_one_notice(source_p, &me, ":Connect: missing port number");
    return 0;
  }

  if (find_servconn_in_progress(conf->name))
  {
    sendto_one_notice(source_p, &me, ":Connect: a connection to %s "
                      "is already in progress.", conf->name);
    return 0;
  }

  /*
   * 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
   * connect{} block and a valid port in the connect{} block
   */
  if (serv_connect(conf, source_p))
  {
    if (!ConfigServerHide.hide_server_ips && HasUMode(source_p, UMODE_ADMIN))
      sendto_one_notice(source_p, &me, ":*** Connecting to %s[%s].%d",
                        conf->host, conf->name, conf->port);
    else
      sendto_one_notice(source_p, &me, ":*** Connecting to %s.%d",
                        conf->name, conf->port);
  }
  else
    sendto_one_notice(source_p, &me, ":*** Couldn't connect to %s.%d",
                      conf->name, conf->port);

  /*
   * Client is either connecting with all the data it needs or has been
   * destroyed
   */
  conf->port = tmpport;
  return 0;
}

/*! \brief CONNECT command handler
 *
 * \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] = command
 *      - parv[1] = target server
 *      - parv[2] = port number
 *      - parv[3] = nickname/servername
 */
static int
ms_connect(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(source_p, ":%s CONNECT %s %s :%s",
                  3, parc, parv) != HUNTED_ISME)
    return 0;

  if (EmptyString(parv[1]))
  {
    sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "CONNECT");
    return 0;
  }

  if ((target_p = hash_find_server(parv[1])))
  {
    sendto_one_notice(source_p, &me, ":Connect: Server %s already exists from %s.",
                      parv[1], target_p->from->name);
    return 0;
  }

  /*
   * 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_notice(source_p, &me, ":Connect: Host %s not listed in ircd.conf", parv[1]);
      return 0;
    }
  }

  /*
   * 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_notice(source_p, &me, ":Connect: Illegal port number");
      return 0;
    }
  }
  else if (port <= 0 && (port = PORTNUM) <= 0)
  {
    sendto_one_notice(source_p, &me, ":Connect: missing port number");
    return 0;
  }

  if (find_servconn_in_progress(conf->name))
  {
    sendto_one_notice(source_p, &me, ":Connect: a connection to %s "
                      "is already in progress.", conf->name);
    return 0;
  }

  /*
   * 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, NOCAPS,
                ":%s GLOBOPS :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
   * connect{} block and a valid port in the connect{} block
   */
  if (serv_connect(conf, source_p))
    sendto_one_notice(source_p, &me, ":*** Connecting to %s.%d",
                      conf->name, conf->port);
  else
    sendto_one_notice(source_p, &me, ":*** Couldn't connect to %s.%d",
                      conf->name, conf->port);
  /*
   * Client is either connecting with all the data it needs or has been
   * destroyed
   */
  conf->port = tmpport;
  return 0;
}

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:	3807
Committed:	Tue Jun 3 18:55:28 2014 UTC (11 years, 2 months ago) by michael
Content type:	text/x-csrc
File size:	8815 byte(s)
Log Message:	- m_connect.c:ms_connect(): use GLOBOPS to announce remote connects
#	User	Rev	Content
1	adx	30	/*
2	michael	2820	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	2820	* Copyright (c) 1997-2014 ircd-hybrid development team
5	adx	30	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19			* USA
20			*/
21
22	michael	2820	/*! \file m_connect.c
23			* \brief Includes required functions for processing the CONNECT command.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28			#include "client.h"
29			#include "ircd.h"
30			#include "irc_string.h"
31			#include "numeric.h"
32			#include "fdlist.h"
33			#include "s_bsd.h"
34	michael	1309	#include "conf.h"
35			#include "log.h"
36	michael	3347	#include "server.h"
37	adx	30	#include "send.h"
38			#include "parse.h"
39			#include "hash.h"
40			#include "modules.h"
41
42
43	michael	3300	/*! \brief CONNECT command handler
44	adx	30	*
45	michael	3300	* \param source_p Pointer to allocated Client struct from which the message
46			* originally comes from. This can be a local or remote client.
47			* \param parc Integer holding the number of supplied arguments.
48			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
49			* pointers.
50			* \note Valid arguments for this command are:
51			* - parv[0] = command
52			* - parv[1] = target server
53			* - parv[2] = port number
54			* - parv[3] = nickname/servername
55	adx	30	*/
56	michael	2820	static int
57	michael	3156	mo_connect(struct Client source_p, int parc, char parv[])
58	adx	30	{
59			int port;
60			int tmpport;
61	michael	1632	struct MaskItem *conf = 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	3109	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "CONNECT");
67	michael	2820	return 0;
68	adx	30	}
69
70	michael	971	if (parc > 3)
71			{
72	michael	2012	if (!HasOFlag(source_p, OPER_FLAG_CONNECT_REMOTE))
73	michael	971	{
74	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "connect:remote");
75	michael	2820	return 0;
76	michael	971	}
77	adx	30
78	michael	3156	if (hunt_server(source_p, ":%s CONNECT %s %s :%s", 3,
79	michael	971	parc, parv) != HUNTED_ISME)
80	michael	2820	return 0;
81	adx	30	}
82	michael	2012	else if (!HasOFlag(source_p, OPER_FLAG_CONNECT))
83			{
84	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "connect");
85	michael	2820	return 0;
86	michael	2012	}
87	adx	30
88	michael	1169	if ((target_p = hash_find_server(parv[1])))
89	adx	30	{
90	michael	3110	sendto_one_notice(source_p, &me, ":Connect: Server %s already exists from %s.",
91			parv[1], target_p->from->name);
92	michael	2820	return 0;
93	adx	30	}
94
95			/*
96	michael	2820	* Try to find the name, then host, if both fail notify ops and bail
97	adx	30	*/
98	michael	1636	if (!(conf = find_matching_name_conf(CONF_SERVER, parv[1], NULL, NULL, 0)))
99	adx	30	{
100	michael	3135	if (!(conf = find_matching_name_conf(CONF_SERVER, NULL, NULL, parv[1], 0)))
101	michael	1636	{
102	michael	3110	sendto_one_notice(source_p, &me, ":Connect: Host %s not listed in ircd.conf", parv[1]);
103	michael	2820	return 0;
104	michael	1636	}
105	adx	30	}
106	michael	971
107	michael	2345	/*
108			* Get port number from user, if given. If not specified,
109	adx	30	* use the default form configuration structure. If missing
110			* from there, then use the precompiled default.
111			*/
112	michael	1632	tmpport = port = conf->port;
113	adx	30
114			if (parc > 2 && !EmptyString(parv[2]))
115			{
116			if ((port = atoi(parv[2])) <= 0)
117			{
118	michael	3110	sendto_one_notice(source_p, &me, ":Connect: Illegal port number");
119	michael	2820	return 0;
120	adx	30	}
121			}
122			else if (port <= 0 && (port = PORTNUM) <= 0)
123			{
124	michael	3110	sendto_one_notice(source_p, &me, ":Connect: missing port number");
125	michael	2820	return 0;
126	adx	30	}
127
128			if (find_servconn_in_progress(conf->name))
129			{
130	michael	3110	sendto_one_notice(source_p, &me, ":Connect: a connection to %s "
131			"is already in progress.", conf->name);
132	michael	2820	return 0;
133	adx	30	}
134
135			/*
136			* Notify all operators about remote connect requests
137			*/
138	michael	3795	ilog(LOG_TYPE_IRCD, "CONNECT From %s : %s %s",
139	adx	30	source_p->name, parv[1], parv[2] ? parv[2] : "");
140
141	michael	1632	conf->port = port;
142	adx	30
143	michael	2345	/*
144	michael	2820	* At this point we should be calling connect_server with a valid
145	michael	3300	* connect{} block and a valid port in the connect{} block
146	adx	30	*/
147	michael	1632	if (serv_connect(conf, source_p))
148	adx	30	{
149	michael	1219	if (!ConfigServerHide.hide_server_ips && HasUMode(source_p, UMODE_ADMIN))
150	michael	3110	sendto_one_notice(source_p, &me, ":*** Connecting to %s[%s].%d",
151			conf->host, conf->name, conf->port);
152	adx	30	else
153	michael	3110	sendto_one_notice(source_p, &me, ":*** Connecting to %s.%d",
154			conf->name, conf->port);
155	adx	30	}
156			else
157	michael	3110	sendto_one_notice(source_p, &me, ":*** Couldn't connect to %s.%d",
158			conf->name, conf->port);
159	adx	30
160	michael	2345	/*
161			* Client is either connecting with all the data it needs or has been
162	adx	30	* destroyed
163			*/
164	michael	1632	conf->port = tmpport;
165	michael	2820	return 0;
166	adx	30	}
167
168	michael	3300	/*! \brief CONNECT command handler
169	adx	30	*
170	michael	3300	* \param source_p Pointer to allocated Client struct from which the message
171			* originally comes from. This can be a local or remote client.
172			* \param parc Integer holding the number of supplied arguments.
173			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
174			* pointers.
175			* \note Valid arguments for this command are:
176			* - parv[0] = command
177			* - parv[1] = target server
178			* - parv[2] = port number
179			* - parv[3] = nickname/servername
180	adx	30	*/
181	michael	2820	static int
182	michael	3156	ms_connect(struct Client source_p, int parc, char parv[])
183	adx	30	{
184			int port;
185			int tmpport;
186	michael	1632	struct MaskItem *conf = NULL;
187	michael	971	const struct Client *target_p = NULL;
188	adx	30
189	michael	3156	if (hunt_server(source_p, ":%s CONNECT %s %s :%s",
190	michael	2345	3, parc, parv) != HUNTED_ISME)
191	michael	2820	return 0;
192	adx	30
193	michael	1413	if (EmptyString(parv[1]))
194	adx	30	{
195	michael	3109	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "CONNECT");
196	michael	2820	return 0;
197	adx	30	}
198
199	michael	1169	if ((target_p = hash_find_server(parv[1])))
200	adx	30	{
201	michael	3110	sendto_one_notice(source_p, &me, ":Connect: Server %s already exists from %s.",
202			parv[1], target_p->from->name);
203	michael	2820	return 0;
204	adx	30	}
205
206			/*
207	michael	2820	* Try to find the name, then host, if both fail notify ops and bail
208	adx	30	*/
209	michael	1636	if (!(conf = find_matching_name_conf(CONF_SERVER, parv[1], NULL, NULL, 0)))
210	michael	3795	{
211	michael	3135	if (!(conf = find_matching_name_conf(CONF_SERVER, NULL, NULL, parv[1], 0)))
212	michael	1636	{
213	michael	3110	sendto_one_notice(source_p, &me, ":Connect: Host %s not listed in ircd.conf", parv[1]);
214	michael	2820	return 0;
215	michael	1636	}
216	adx	30	}
217
218	michael	2345	/*
219			* Get port number from user, if given. If not specified,
220	adx	30	* use the default form configuration structure. If missing
221			* from there, then use the precompiled default.
222			*/
223	michael	1632	tmpport = port = conf->port;
224	adx	30
225			if (parc > 2 && !EmptyString(parv[2]))
226			{
227			port = atoi(parv[2]);
228
229	michael	2345	/*
230	michael	2820	* If someone sends port 0, and we have a config port.. use it
231	michael	2345	*/
232	michael	1632	if (port == 0 && conf->port)
233			port = conf->port;
234	adx	30	else if (port <= 0)
235			{
236	michael	3110	sendto_one_notice(source_p, &me, ":Connect: Illegal port number");
237	michael	2820	return 0;
238	adx	30	}
239			}
240			else if (port <= 0 && (port = PORTNUM) <= 0)
241			{
242	michael	3110	sendto_one_notice(source_p, &me, ":Connect: missing port number");
243	michael	2820	return 0;
244	adx	30	}
245
246			if (find_servconn_in_progress(conf->name))
247			{
248	michael	3110	sendto_one_notice(source_p, &me, ":Connect: a connection to %s "
249			"is already in progress.", conf->name);
250	michael	2820	return 0;
251	adx	30	}
252
253			/*
254			* Notify all operators about remote connect requests
255			*/
256			sendto_wallops_flags(UMODE_WALLOP, &me, "Remote CONNECT %s %d from %s",
257			parv[1], port, source_p->name);
258	michael	3135	sendto_server(NULL, NOCAPS, NOCAPS,
259	michael	3807	":%s GLOBOPS :Remote CONNECT %s %d from %s",
260	michael	1463	me.id, parv[1], port, source_p->name);
261	adx	30
262	michael	3795	ilog(LOG_TYPE_IRCD, "CONNECT From %s : %s %d",
263	adx	30	source_p->name, parv[1], port);
264
265	michael	1632	conf->port = port;
266	adx	30
267	michael	885	/*
268			* At this point we should be calling connect_server with a valid
269	michael	3300	* connect{} block and a valid port in the connect{} block
270	adx	30	*/
271	michael	1632	if (serv_connect(conf, source_p))
272	michael	3110	sendto_one_notice(source_p, &me, ":*** Connecting to %s.%d",
273			conf->name, conf->port);
274	adx	30	else
275	michael	3110	sendto_one_notice(source_p, &me, ":*** Couldn't connect to %s.%d",
276			conf->name, conf->port);
277	michael	885	/*
278			* Client is either connecting with all the data it needs or has been
279	adx	30	* destroyed
280			*/
281	michael	1632	conf->port = tmpport;
282	michael	2820	return 0;
283	adx	30	}
284	michael	1230
285	michael	2820	static struct Message connect_msgtab =
286			{
287	michael	1230	"CONNECT", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
288			{ m_unregistered, m_not_oper, ms_connect, m_ignore, mo_connect, m_ignore }
289			};
290
291			static void
292			module_init(void)
293			{
294			mod_add_cmd(&connect_msgtab);
295			}
296
297			static void
298			module_exit(void)
299			{
300			mod_del_cmd(&connect_msgtab);
301			}
302
303	michael	2820	struct module module_entry =
304			{
305	michael	1230	.node = { NULL, NULL, NULL },
306			.name = NULL,
307			.version = "$Revision$",
308			.handle = NULL,
309			.modinit = module_init,
310			.modexit = module_exit,
311			.flags = 0
312			};