8.2.x/modules/m_userhost.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2017 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_userhost.c
 * \brief Includes required functions for processing the USERHOST command.
 * \version $Id$
 */

#include "stdinc.h"
#include "client.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "irc_string.h"
#include "parse.h"
#include "modules.h"


/*! \brief USERHOST 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] = space-separated list of up to 5 nicknames
 */
static int
m_userhost(struct Client *source_p, int parc, char *parv[])
{
  struct Client *target_p;
  char buf[IRCD_BUFSIZE];
  char response[NICKLEN*2+USERLEN+HOSTLEN+30];
  char *t = NULL, *p = NULL, *nick = NULL;
  int i = 0;
  int cur_len;
  int rl;

  cur_len = snprintf(buf, sizeof(buf), numeric_form(RPL_USERHOST), me.name, source_p->name, "");
  t = buf + cur_len;

  for (nick = strtok_r(parv[1], " ", &p); nick && i++ < 5;
       nick = strtok_r(NULL,    " ", &p))
  {
    if ((target_p = find_person(source_p, nick)))
    {
      /*
       * Show real IP address for USERHOST on yourself.
       * This is needed for things like mIRC, which do a server-based
       * lookup (USERHOST) to figure out what the clients' local IP
       * is. Useful for things like NAT, and dynamic dial-up users.
       */
      if (MyConnect(target_p) && (target_p == source_p))
      {
        rl = snprintf(response, sizeof(response), "%s%s=%c%s@%s ",
                      target_p->name,
                      HasUMode(target_p, UMODE_OPER) ? "*" : "",
                      (target_p->away[0]) ? '-' : '+',
                      target_p->username,
                      target_p->sockhost);
      }
      else
      {
        rl = snprintf(response, sizeof(response), "%s%s=%c%s@%s ",
                      target_p->name, (HasUMode(target_p, UMODE_OPER) &&
                                       (!HasUMode(target_p, UMODE_HIDDEN) ||
                                         HasUMode(source_p, UMODE_OPER))) ? "*" : "",
                      (target_p->away[0]) ? '-' : '+',
                      target_p->username,
                      target_p->host);
      }

      if ((rl + cur_len) < (IRCD_BUFSIZE - 10))
      {
        sprintf(t, "%s", response);
        t += rl;
        cur_len += rl;
      }
      else
        break;
    }
  }

  sendto_one(source_p, "%s", buf);
  return 0;
}

static struct Message userhost_msgtab =
{
  .cmd = "USERHOST",
  .args_min = 2,
  .args_max = 1,
  .handlers[UNREGISTERED_HANDLER] = m_unregistered,
  .handlers[CLIENT_HANDLER] = m_userhost,
  .handlers[SERVER_HANDLER] = m_ignore,
  .handlers[ENCAP_HANDLER] = m_ignore,
  .handlers[OPER_HANDLER] = m_userhost
};

static void
module_init(void)
{
  mod_add_cmd(&userhost_msgtab);
}

static void
module_exit(void)
{
  mod_del_cmd(&userhost_msgtab);
}

struct module module_entry =
{
  .version = "$Revision$",
  .modinit = module_init,
  .modexit = module_exit,
};
Revision:	7925
Committed:	Sat Dec 31 13:57:24 2016 UTC (9 years, 6 months ago) by michael
Content type:	text/x-csrc
File size:	4130 byte(s)
Log Message:	- Update copyright years
#	User	Rev	Content
1	adx	30	/*
2	michael	2820	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	7925	* Copyright (c) 1997-2017 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	michael	4564	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	adx	30	* USA
20			*/
21
22	michael	2820	/*! \file m_userhost.c
23			* \brief Includes required functions for processing the USERHOST command.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28			#include "client.h"
29			#include "ircd.h"
30			#include "numeric.h"
31			#include "send.h"
32			#include "irc_string.h"
33			#include "parse.h"
34			#include "modules.h"
35
36
37	michael	3299	/*! \brief USERHOST command handler
38			*
39			* \param source_p Pointer to allocated Client struct from which the message
40			* originally comes from. This can be a local or remote client.
41			* \param parc Integer holding the number of supplied arguments.
42			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
43			* pointers.
44			* \note Valid arguments for this command are:
45			* - parv[0] = command
46			* - parv[1] = space-separated list of up to 5 nicknames
47	adx	30	*/
48	michael	2820	static int
49	michael	3156	m_userhost(struct Client source_p, int parc, char parv[])
50	adx	30	{
51			struct Client *target_p;
52			char buf[IRCD_BUFSIZE];
53			char response[NICKLEN*2+USERLEN+HOSTLEN+30];
54	michael	1178	char t = NULL, p = NULL, *nick = NULL;
55	michael	3299	int i = 0;
56	adx	30	int cur_len;
57			int rl;
58
59	michael	3109	cur_len = snprintf(buf, sizeof(buf), numeric_form(RPL_USERHOST), me.name, source_p->name, "");
60	adx	30	t = buf + cur_len;
61
62	michael	6545	for (nick = strtok_r(parv[1], " ", &p); nick && i++ < 5;
63			nick = strtok_r(NULL, " ", &p))
64	adx	30	{
65	michael	3246	if ((target_p = find_person(source_p, nick)))
66	adx	30	{
67	adx	268	/*
68	michael	6626	* Show real IP address for USERHOST on yourself.
69	michael	885	* This is needed for things like mIRC, which do a server-based
70			* lookup (USERHOST) to figure out what the clients' local IP
71	michael	3299	* is. Useful for things like NAT, and dynamic dial-up users.
72	adx	268	*/
73	michael	7047	if (MyConnect(target_p) && (target_p == source_p))
74	michael	885	{
75	michael	4827	rl = snprintf(response, sizeof(response), "%s%s=%c%s@%s ",
76			target_p->name,
77			HasUMode(target_p, UMODE_OPER) ? "*" : "",
78			(target_p->away[0]) ? '-' : '+',
79			target_p->username,
80			target_p->sockhost);
81	michael	885	}
82	adx	268	else
83	michael	885	{
84	michael	4827	rl = snprintf(response, sizeof(response), "%s%s=%c%s@%s ",
85			target_p->name, (HasUMode(target_p, UMODE_OPER) &&
86			(!HasUMode(target_p, UMODE_HIDDEN) \|\|
87			HasUMode(source_p, UMODE_OPER))) ? "*" : "",
88			(target_p->away[0]) ? '-' : '+',
89			target_p->username,
90			target_p->host);
91	michael	885	}
92	adx	30
93	michael	885	if ((rl + cur_len) < (IRCD_BUFSIZE - 10))
94	adx	268	{
95	michael	1793	sprintf(t, "%s", response);
96	adx	268	t += rl;
97			cur_len += rl;
98			}
99	michael	885	else
100			break;
101	adx	30	}
102	adx	268	}
103	adx	30
104			sendto_one(source_p, "%s", buf);
105	michael	2820	return 0;
106	adx	30	}
107	michael	1230
108	michael	2820	static struct Message userhost_msgtab =
109			{
110	michael	5880	.cmd = "USERHOST",
111			.args_min = 2,
112			.args_max = 1,
113			.handlers[UNREGISTERED_HANDLER] = m_unregistered,
114			.handlers[CLIENT_HANDLER] = m_userhost,
115			.handlers[SERVER_HANDLER] = m_ignore,
116			.handlers[ENCAP_HANDLER] = m_ignore,
117			.handlers[OPER_HANDLER] = m_userhost
118	michael	1230	};
119
120			static void
121			module_init(void)
122			{
123			mod_add_cmd(&userhost_msgtab);
124			}
125
126			static void
127			module_exit(void)
128			{
129			mod_del_cmd(&userhost_msgtab);
130			}
131
132	michael	2820	struct module module_entry =
133			{
134	michael	1230	.version = "$Revision$",
135			.modinit = module_init,
136			.modexit = module_exit,
137			};