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

/*
 * 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;
  struct Client *target_p;

  /* 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 = (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)
  {
    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 && IsAdmin(source_p))
      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;
  struct Client *target_p;

  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 = (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 (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 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, 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);

  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;
}

Revision:	69
Committed:	Tue Oct 4 16:09:51 2005 UTC (20 years, 10 months ago) by adx
Content type:	text/x-csrc
File size:	8804 byte(s)
Log Message:	- splitted ircd/libio, all headers connected with libio sources have been moved for internal use only. To use libio interface, include "libio.h" (which is already done in "stdinc.h")
#	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			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			#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			/*
63			* mo_connect - CONNECT command handler
64			*
65			* Added by Jto 11 Feb 1989
66			*
67			* m_connect
68			* parv[0] = sender prefix
69			* parv[1] = servername
70			* parv[2] = port number
71			* parv[3] = remote server
72			*/
73			static void
74			mo_connect(struct Client* client_p, struct Client* source_p,
75			int parc, char* parv[])
76			{
77			int port;
78			int tmpport;
79			struct ConfItem *conf = NULL;
80			struct AccessItem *aconf = NULL;
81			struct Client *target_p;
82
83			/* always privileged with handlers */
84			if (MyConnect(source_p) && !IsOperRemote(source_p) && parc > 3)
85			{
86			sendto_one(source_p, form_str(ERR_NOPRIVS),
87			me.name, source_p->name, "connect");
88			return;
89			}
90
91			if (hunt_server(client_p, source_p,
92			":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
93			return;
94
95			if (*parv[1] == '\0')
96			{
97			sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
98			me.name, source_p->name, "CONNECT");
99			return;
100			}
101
102			if ((target_p = find_server(parv[1])))
103			{
104			sendto_one(source_p,
105			":%s NOTICE %s :Connect: Server %s already exists from %s.",
106			me.name, source_p->name, parv[1], target_p->from->name);
107			return;
108			}
109
110			/*
111			* try to find the name, then host, if both fail notify ops and bail
112			*/
113			if ((conf = find_matching_name_conf(SERVER_TYPE,
114			parv[1], NULL, NULL, 0)) != NULL)
115			aconf = (struct AccessItem *)map_to_conf(conf);
116			else if ((conf = find_matching_name_conf(SERVER_TYPE,
117			NULL, NULL, parv[1], 0)) != NULL)
118			aconf = (struct AccessItem *)map_to_conf(conf);
119
120			if (conf == NULL)
121			{
122			sendto_one(source_p,
123			":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
124			me.name, source_p->name, parv[1]);
125			return;
126			}
127
128			/* Get port number from user, if given. If not specified,
129			* use the default form configuration structure. If missing
130			* from there, then use the precompiled default.
131			*/
132			tmpport = port = aconf->port;
133
134			if (parc > 2 && !EmptyString(parv[2]))
135			{
136			if ((port = atoi(parv[2])) <= 0)
137			{
138			sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal port number",
139			me.name, source_p->name);
140			return;
141			}
142			}
143			else if (port <= 0 && (port = PORTNUM) <= 0)
144			{
145			sendto_one(source_p, ":%s NOTICE %s :Connect: missing port number",
146			me.name, source_p->name);
147			return;
148			}
149
150			if (find_servconn_in_progress(conf->name))
151			{
152			sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
153			"is already in progress.", me.name, source_p->name, conf->name);
154			return;
155			}
156
157			/*
158			* Notify all operators about remote connect requests
159			*/
160			ilog(L_TRACE, "CONNECT From %s : %s %s",
161			source_p->name, parv[1], parv[2] ? parv[2] : "");
162
163			aconf->port = port;
164
165			/* at this point we should be calling connect_server with a valid
166			* C:line and a valid port in the C:line
167			*/
168			if (serv_connect(aconf, source_p))
169			{
170			if (!ConfigServerHide.hide_server_ips && IsAdmin(source_p))
171			sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s[%s].%d",
172			me.name, source_p->name, aconf->host,
173			conf->name, aconf->port);
174			else
175			sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
176			me.name, source_p->name, conf->name, aconf->port);
177			}
178			else
179			{
180			sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
181			me.name, source_p->name, conf->name, aconf->port);
182			}
183
184			/* client is either connecting with all the data it needs or has been
185			* destroyed
186			*/
187			aconf->port = tmpport;
188			}
189
190			/*
191			* ms_connect - CONNECT command handler
192			*
193			* Added by Jto 11 Feb 1989
194			*
195			* m_connect
196			* parv[0] = sender prefix
197			* parv[1] = servername
198			* parv[2] = port number
199			* parv[3] = remote server
200			*/
201			static void
202			ms_connect(struct Client client_p, struct Client source_p,
203			int parc, char *parv[])
204			{
205			int port;
206			int tmpport;
207			struct ConfItem *conf = NULL;
208			struct AccessItem *aconf = NULL;
209			struct Client *target_p;
210
211			if (hunt_server(client_p, source_p,
212			":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
213			return;
214
215			if (*parv[1] == '\0')
216			{
217			sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
218			me.name, source_p->name, "CONNECT");
219			return;
220			}
221
222			if ((target_p = find_server(parv[1])))
223			{
224			sendto_one(source_p,
225			":%s NOTICE %s :Connect: Server %s already exists from %s.",
226			me.name, source_p->name, parv[1], target_p->from->name);
227			return;
228			}
229
230			/*
231			* try to find the name, then host, if both fail notify ops and bail
232			*/
233			if ((conf = find_matching_name_conf(SERVER_TYPE,
234			parv[1], NULL, NULL, 0)) != NULL)
235			aconf = (struct AccessItem *)map_to_conf(conf);
236			else if ((conf = find_matching_name_conf(SERVER_TYPE,
237			NULL, NULL, parv[1], 0)) != NULL)
238			aconf = (struct AccessItem *)map_to_conf(conf);
239
240			if (aconf == NULL)
241			{
242			sendto_one(source_p,
243			":%s NOTICE %s :Connect: Host %s not listed in ircd.conf",
244			me.name, source_p->name, parv[1]);
245			return;
246			}
247
248			assert(aconf != NULL);
249
250			/* Get port number from user, if given. If not specified,
251			* use the default form configuration structure. If missing
252			* from there, then use the precompiled default.
253			*/
254			tmpport = port = aconf->port;
255
256			if (parc > 2 && !EmptyString(parv[2]))
257			{
258			port = atoi(parv[2]);
259
260			/* if someone sends port 0, and we have a config port.. use it */
261			if (port == 0 && aconf->port)
262			port = aconf->port;
263			else if (port <= 0)
264			{
265			sendto_one(source_p, ":%s NOTICE %s :Connect: Illegal port number",
266			me.name, source_p->name);
267			return;
268			}
269			}
270			else if (port <= 0 && (port = PORTNUM) <= 0)
271			{
272			sendto_one(source_p, ":%s NOTICE %s :Connect: missing port number",
273			me.name, source_p->name);
274			return;
275			}
276
277			if (find_servconn_in_progress(conf->name))
278			{
279			sendto_one(source_p, ":%s NOTICE %s :Connect: a connection to %s "
280			"is already in progress.", me.name, source_p->name, conf->name);
281			return;
282			}
283
284			/*
285			* Notify all operators about remote connect requests
286			*/
287			sendto_wallops_flags(UMODE_WALLOP, &me, "Remote CONNECT %s %d from %s",
288			parv[1], port, source_p->name);
289			sendto_server(NULL, NULL, NULL, NOCAPS, NOCAPS, NOFLAGS,
290			":%s WALLOPS :Remote CONNECT %s %d from %s",
291			me.name, parv[1], port, source_p->name);
292
293			ilog(L_TRACE, "CONNECT From %s : %s %d",
294			source_p->name, parv[1], port);
295
296			aconf->port = port;
297
298			/* at this point we should be calling connect_server with a valid
299			* C:line and a valid port in the C:line
300			*/
301			if (serv_connect(aconf, source_p))
302			sendto_one(source_p, ":%s NOTICE %s :*** Connecting to %s.%d",
303			me.name, source_p->name, conf->name, aconf->port);
304			else
305			sendto_one(source_p, ":%s NOTICE %s :*** Couldn't connect to %s.%d",
306			me.name, source_p->name, conf->name, aconf->port);
307			/* client is either connecting with all the data it needs or has been
308			* destroyed
309			*/
310			aconf->port = tmpport;
311			}
312