ircd-hybrid/modules/m_userhost.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_userhost.c: Shows a user's host.
 *
 *  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_serv.h"
#include "send.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "s_conf.h"


static void m_userhost(struct Client *, struct Client *, int, char *[]);

struct Message userhost_msgtab = {
  "USERHOST", 0, 0, 1, 0, MFLG_SLOW, 0,
  {m_unregistered, m_userhost, m_userhost, m_ignore, m_userhost, m_ignore}
};

#ifndef STATIC_MODULES
void
_modinit(void)
{
  mod_add_cmd(&userhost_msgtab);
}

void
_moddeinit(void)
{
  mod_del_cmd(&userhost_msgtab);
}

const char *_version = "$Revision$";
#endif

/*
 * m_userhost added by Darren Reed 13/8/91 to aid clients and reduce
 * the need for complicated requests like WHOIS. It returns user/host
 * information only (no spurious AWAY labels or channels).
 */
static void
m_userhost(struct Client *client_p, 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;
  int i, n;               /* loop counter */
  int cur_len;
  int rl;

  cur_len = ircsprintf(buf,form_str(RPL_USERHOST),me.name, parv[0], "");
  t = buf + cur_len;

  for (i = 0; i < 5; i++)
  {
    if (parv[i+1] == NULL)
      break;

    if ((target_p = find_person(client_p, parv[i+1])) != NULL)
    {
          /*
           * Show real IP 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 a lazyleaf relayed us this request, we don't know
           * the clients real IP.
           * So, if you're on a lazyleaf, and you send a userhost
           * including your nick and the nick of someone not known to
           * the leaf, you'll get your spoofed IP.  tough.
           */
          if (MyClient(target_p) && (target_p == source_p))
          {
            rl = ircsprintf(response, "%s%s=%c%s@%s ",
                            target_p->name,
                            IsOper(target_p) ? "*" : "",
                            (target_p->away) ? '-' : '+',
                            target_p->username,
                            target_p->sockhost);
          }
          else
          {
            rl = ircsprintf(response, "%s%s=%c%s@%s ",
                            target_p->name,
                            IsOper(target_p) ? "*" : "",
                            (target_p->away) ? '-' : '+',
                            target_p->username,
                            target_p->host);
          }

          if ((rl + cur_len) < (IRCD_BUFSIZE-10))
          {
              ircsprintf(t,"%s",response);
              t += rl;
              cur_len += rl;
          }
          else
            break;
        }
      else if ( !ServerInfo.hub && uplink && IsCapable(uplink, CAP_LL) )
        {
          t = buf;
          for( n = 0; n < 5; n++ )
          {
            if( parv[n+1] )
            {
              rl = ircsprintf(t, "%s ", parv[n+1]);
              t += rl;
            }
            else
              break;
          }
          /* Relay upstream, and let hub reply */
          sendto_one(uplink, ":%s USERHOST %s", parv[0], buf );
          return;
        }
    }

  sendto_one(source_p, "%s", buf);
}
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:	4046 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_userhost.c: Shows a user's host.
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_serv.h"
31			#include "send.h"
32			#include "msg.h"
33			#include "parse.h"
34			#include "modules.h"
35			#include "s_conf.h"
36
37
38			static void m_userhost(struct Client , struct Client , int, char *[]);
39
40			struct Message userhost_msgtab = {
41			"USERHOST", 0, 0, 1, 0, MFLG_SLOW, 0,
42			{m_unregistered, m_userhost, m_userhost, m_ignore, m_userhost, m_ignore}
43			};
44
45			#ifndef STATIC_MODULES
46			void
47			_modinit(void)
48			{
49			mod_add_cmd(&userhost_msgtab);
50			}
51
52			void
53			_moddeinit(void)
54			{
55			mod_del_cmd(&userhost_msgtab);
56			}
57
58	knight	31	const char *_version = "$Revision$";
59	adx	30	#endif
60
61			/*
62			* m_userhost added by Darren Reed 13/8/91 to aid clients and reduce
63			* the need for complicated requests like WHOIS. It returns user/host
64			* information only (no spurious AWAY labels or channels).
65			*/
66			static void
67			m_userhost(struct Client client_p, struct Client source_p,
68			int parc, char *parv[])
69			{
70			struct Client *target_p;
71			char buf[IRCD_BUFSIZE];
72			char response[NICKLEN*2+USERLEN+HOSTLEN+30];
73			char *t;
74			int i, n; /* loop counter */
75			int cur_len;
76			int rl;
77
78			cur_len = ircsprintf(buf,form_str(RPL_USERHOST),me.name, parv[0], "");
79			t = buf + cur_len;
80
81			for (i = 0; i < 5; i++)
82			{
83			if (parv[i+1] == NULL)
84			break;
85
86			if ((target_p = find_person(client_p, parv[i+1])) != NULL)
87			{
88			/*
89			* Show real IP for USERHOST on yourself.
90			* This is needed for things like mIRC, which do a server-based
91			* lookup (USERHOST) to figure out what the clients' local IP
92			* is. Useful for things like NAT, and dynamic dial-up users.
93			*/
94			/*
95			* If a lazyleaf relayed us this request, we don't know
96			* the clients real IP.
97			* So, if you're on a lazyleaf, and you send a userhost
98			* including your nick and the nick of someone not known to
99			* the leaf, you'll get your spoofed IP. tough.
100			*/
101			if (MyClient(target_p) && (target_p == source_p))
102			{
103			rl = ircsprintf(response, "%s%s=%c%s@%s ",
104			target_p->name,
105			IsOper(target_p) ? "*" : "",
106			(target_p->away) ? '-' : '+',
107			target_p->username,
108			target_p->sockhost);
109			}
110			else
111			{
112			rl = ircsprintf(response, "%s%s=%c%s@%s ",
113			target_p->name,
114			IsOper(target_p) ? "*" : "",
115			(target_p->away) ? '-' : '+',
116			target_p->username,
117			target_p->host);
118			}
119
120			if ((rl + cur_len) < (IRCD_BUFSIZE-10))
121			{
122			ircsprintf(t,"%s",response);
123			t += rl;
124			cur_len += rl;
125			}
126			else
127			break;
128			}
129			else if ( !ServerInfo.hub && uplink && IsCapable(uplink, CAP_LL) )
130			{
131			t = buf;
132			for( n = 0; n < 5; n++ )
133			{
134			if( parv[n+1] )
135			{
136			rl = ircsprintf(t, "%s ", parv[n+1]);
137			t += rl;
138			}
139			else
140			break;
141			}
142			/* Relay upstream, and let hub reply */
143			sendto_one(uplink, ":%s USERHOST %s", parv[0], buf );
144			return;
145			}
146			}
147
148			sendto_one(source_p, "%s", buf);
149			}