trunk/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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 *  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 = 0, tmpport = 0;
  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;
  }

  /*
   * 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)) &&
      !(conf = find_matching_name_conf(CONF_SERVER, NULL, NULL, parv[1], 0)))
  {
    sendto_one_notice(source_p, &me, ":Connect: Host %s not listed in configuration file", parv[1]);
    return 0;
  }

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

  /*
   * Get port number from user, if given. If not specified,
   * use the default from 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 = 0, tmpport = 0;
  struct MaskItem *conf = NULL;
  const struct Client *target_p = NULL;

  if (parc < 4 || EmptyString(parv[3]))
  {
    sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "CONNECT");
    return 0;
  }

  if (hunt_server(source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
    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)) &&
      !(conf = find_matching_name_conf(CONF_SERVER, NULL, NULL, parv[1], 0)))
  {
    sendto_one_notice(source_p, &me, ":Connect: Host %s not listed in configuration file", parv[1]);
    return 0;
  }

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

  /*
   * Get port number from user, if given. If not specified,
   * use the default from 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_realops_flags(UMODE_ALL, L_ALL, SEND_GLOBAL, "from %s: Remote CONNECT %s %d from %s",
                       me.name, 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", NULL, 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:	4689
Committed:	Fri Oct 3 13:05:54 2014 UTC (10 years, 10 months ago) by michael
Content type:	text/x-csrc
File size:	8837 byte(s)
Log Message:	- m_connect.c: whitespace changes
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 1997-2014 ircd-hybrid development team
5	*
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	* USA
20	*/
21
22	/*! \file m_connect.c
23	* \brief Includes required functions for processing the CONNECT command.
24	* \version $Id$
25	*/
26
27	#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	#include "conf.h"
35	#include "log.h"
36	#include "server.h"
37	#include "send.h"
38	#include "parse.h"
39	#include "hash.h"
40	#include "modules.h"
41
42
43	/*! \brief CONNECT command handler
44	*
45	* \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	*/
56	static int
57	mo_connect(struct Client source_p, int parc, char parv[])
58	{
59	int port = 0, tmpport = 0;
60	struct MaskItem *conf = NULL;
61	const struct Client *target_p = NULL;
62
63	if (EmptyString(parv[1]))
64	{
65	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "CONNECT");
66	return 0;
67	}
68
69	if (parc > 3)
70	{
71	if (!HasOFlag(source_p, OPER_FLAG_CONNECT_REMOTE))
72	{
73	sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "connect:remote");
74	return 0;
75	}
76
77	if (hunt_server(source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
78	return 0;
79	}
80	else if (!HasOFlag(source_p, OPER_FLAG_CONNECT))
81	{
82	sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "connect");
83	return 0;
84	}
85
86	/*
87	* Try to find the name, then host, if both fail notify ops and bail
88	*/
89	if (!(conf = find_matching_name_conf(CONF_SERVER, parv[1], NULL, NULL, 0)) &&
90	!(conf = find_matching_name_conf(CONF_SERVER, NULL, NULL, parv[1], 0)))
91	{
92	sendto_one_notice(source_p, &me, ":Connect: Host %s not listed in configuration file", parv[1]);
93	return 0;
94	}
95
96	if ((target_p = hash_find_server(conf->name)))
97	{
98	sendto_one_notice(source_p, &me, ":Connect: Server %s already exists from %s.",
99	target_p->name, target_p->from->name);
100	return 0;
101	}
102
103	/*
104	* Get port number from user, if given. If not specified,
105	* use the default from configuration structure. If missing
106	* from there, then use the precompiled default.
107	*/
108	tmpport = port = conf->port;
109
110	if (parc > 2 && !EmptyString(parv[2]))
111	{
112	if ((port = atoi(parv[2])) <= 0)
113	{
114	sendto_one_notice(source_p, &me, ":Connect: Illegal port number");
115	return 0;
116	}
117	}
118	else if (port <= 0 && (port = PORTNUM) <= 0)
119	{
120	sendto_one_notice(source_p, &me, ":Connect: missing port number");
121	return 0;
122	}
123
124	if (find_servconn_in_progress(conf->name))
125	{
126	sendto_one_notice(source_p, &me, ":Connect: a connection to %s "
127	"is already in progress.", conf->name);
128	return 0;
129	}
130
131	/*
132	* Notify all operators about remote connect requests
133	*/
134	ilog(LOG_TYPE_IRCD, "CONNECT From %s : %s %s",
135	source_p->name, parv[1], parv[2] ? parv[2] : "");
136
137	conf->port = port;
138
139	/*
140	* At this point we should be calling connect_server with a valid
141	* connect{} block and a valid port in the connect{} block
142	*/
143	if (serv_connect(conf, source_p))
144	{
145	if (!ConfigServerHide.hide_server_ips && HasUMode(source_p, UMODE_ADMIN))
146	sendto_one_notice(source_p, &me, ":*** Connecting to %s[%s].%d",
147	conf->host, conf->name, conf->port);
148	else
149	sendto_one_notice(source_p, &me, ":*** Connecting to %s.%d",
150	conf->name, conf->port);
151	}
152	else
153	sendto_one_notice(source_p, &me, ":*** Couldn't connect to %s.%d",
154	conf->name, conf->port);
155
156	/*
157	* Client is either connecting with all the data it needs or has been
158	* destroyed
159	*/
160	conf->port = tmpport;
161	return 0;
162	}
163
164	/*! \brief CONNECT command handler
165	*
166	* \param source_p Pointer to allocated Client struct from which the message
167	* originally comes from. This can be a local or remote client.
168	* \param parc Integer holding the number of supplied arguments.
169	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
170	* pointers.
171	* \note Valid arguments for this command are:
172	* - parv[0] = command
173	* - parv[1] = target server
174	* - parv[2] = port number
175	* - parv[3] = nickname/servername
176	*/
177	static int
178	ms_connect(struct Client source_p, int parc, char parv[])
179	{
180	int port = 0, tmpport = 0;
181	struct MaskItem *conf = NULL;
182	const struct Client *target_p = NULL;
183
184	if (parc < 4 \|\| EmptyString(parv[3]))
185	{
186	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "CONNECT");
187	return 0;
188	}
189
190	if (hunt_server(source_p, ":%s CONNECT %s %s :%s", 3, parc, parv) != HUNTED_ISME)
191	return 0;
192
193	/*
194	* Try to find the name, then host, if both fail notify ops and bail
195	*/
196	if (!(conf = find_matching_name_conf(CONF_SERVER, parv[1], NULL, NULL, 0)) &&
197	!(conf = find_matching_name_conf(CONF_SERVER, NULL, NULL, parv[1], 0)))
198	{
199	sendto_one_notice(source_p, &me, ":Connect: Host %s not listed in configuration file", parv[1]);
200	return 0;
201	}
202
203	if ((target_p = hash_find_server(conf->name)))
204	{
205	sendto_one_notice(source_p, &me, ":Connect: Server %s already exists from %s.",
206	target_p->name, target_p->from->name);
207	return 0;
208	}
209
210	/*
211	* Get port number from user, if given. If not specified,
212	* use the default from configuration structure. If missing
213	* from there, then use the precompiled default.
214	*/
215	tmpport = port = conf->port;
216
217	if (parc > 2 && !EmptyString(parv[2]))
218	{
219	port = atoi(parv[2]);
220
221	/*
222	* If someone sends port 0, and we have a config port.. use it
223	*/
224	if (port == 0 && conf->port)
225	port = conf->port;
226	else if (port <= 0)
227	{
228	sendto_one_notice(source_p, &me, ":Connect: Illegal port number");
229	return 0;
230	}
231	}
232	else if (port <= 0 && (port = PORTNUM) <= 0)
233	{
234	sendto_one_notice(source_p, &me, ":Connect: missing port number");
235	return 0;
236	}
237
238	if (find_servconn_in_progress(conf->name))
239	{
240	sendto_one_notice(source_p, &me, ":Connect: a connection to %s "
241	"is already in progress.", conf->name);
242	return 0;
243	}
244
245	/*
246	* Notify all operators about remote connect requests
247	*/
248	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_GLOBAL, "from %s: Remote CONNECT %s %d from %s",
249	me.name, parv[1], port, source_p->name);
250	sendto_server(NULL, NOCAPS, NOCAPS,
251	":%s GLOBOPS :Remote CONNECT %s %d from %s",
252	me.id, parv[1], port, source_p->name);
253
254	ilog(LOG_TYPE_IRCD, "CONNECT From %s : %s %d",
255	source_p->name, parv[1], port);
256
257	conf->port = port;
258
259	/*
260	* At this point we should be calling connect_server with a valid
261	* connect{} block and a valid port in the connect{} block
262	*/
263	if (serv_connect(conf, source_p))
264	sendto_one_notice(source_p, &me, ":*** Connecting to %s.%d",
265	conf->name, conf->port);
266	else
267	sendto_one_notice(source_p, &me, ":*** Couldn't connect to %s.%d",
268	conf->name, conf->port);
269	/*
270	* Client is either connecting with all the data it needs or has been
271	* destroyed
272	*/
273	conf->port = tmpport;
274	return 0;
275	}
276
277	static struct Message connect_msgtab =
278	{
279	"CONNECT", NULL, 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
280	{ m_unregistered, m_not_oper, ms_connect, m_ignore, mo_connect, m_ignore }
281	};
282
283	static void
284	module_init(void)
285	{
286	mod_add_cmd(&connect_msgtab);
287	}
288
289	static void
290	module_exit(void)
291	{
292	mod_del_cmd(&connect_msgtab);
293	}
294
295	struct module module_entry =
296	{
297	.node = { NULL, NULL, NULL },
298	.name = NULL,
299	.version = "$Revision$",
300	.handle = NULL,
301	.modinit = module_init,
302	.modexit = module_exit,
303	.flags = 0
304	};