trunk/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: m_userhost.c,v 1.44 2005/08/17 16:02:51 michael Exp $
 */

#include "stdinc.h"
#include "handlers.h"
#include "client.h"
#include "ircd.h"
#include "numeric.h"
#include "s_serv.h"
#include "send.h"
#include "irc_string.h"
#include "sprintf_irc.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: 1.44 $";
#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:	30
Committed:	Sun Oct 2 20:03:27 2005 UTC (19 years, 11 months ago) by adx
Content type:	text/x-csrc
Original Path:	*ircd-hybrid/modules/m_userhost.c*
File size:	4156 byte(s)
Log Message:	- imported sources - can be moved later according to the directory/branching scheme, but we need the svn up
#	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			* $Id: m_userhost.c,v 1.44 2005/08/17 16:02:51 michael Exp $
23			*/
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 "irc_string.h"
33			#include "sprintf_irc.h"
34			#include "msg.h"
35			#include "parse.h"
36			#include "modules.h"
37			#include "s_conf.h"
38
39
40			static void m_userhost(struct Client , struct Client , int, char *[]);
41
42			struct Message userhost_msgtab = {
43			"USERHOST", 0, 0, 1, 0, MFLG_SLOW, 0,
44			{m_unregistered, m_userhost, m_userhost, m_ignore, m_userhost, m_ignore}
45			};
46
47			#ifndef STATIC_MODULES
48			void
49			_modinit(void)
50			{
51			mod_add_cmd(&userhost_msgtab);
52			}
53
54			void
55			_moddeinit(void)
56			{
57			mod_del_cmd(&userhost_msgtab);
58			}
59
60			const char *_version = "$Revision: 1.44 $";
61			#endif
62
63			/*
64			* m_userhost added by Darren Reed 13/8/91 to aid clients and reduce
65			* the need for complicated requests like WHOIS. It returns user/host
66			* information only (no spurious AWAY labels or channels).
67			*/
68			static void
69			m_userhost(struct Client client_p, struct Client source_p,
70			int parc, char *parv[])
71			{
72			struct Client *target_p;
73			char buf[IRCD_BUFSIZE];
74			char response[NICKLEN*2+USERLEN+HOSTLEN+30];
75			char *t;
76			int i, n; /* loop counter */
77			int cur_len;
78			int rl;
79
80			cur_len = ircsprintf(buf,form_str(RPL_USERHOST),me.name, parv[0], "");
81			t = buf + cur_len;
82
83			for (i = 0; i < 5; i++)
84			{
85			if (parv[i+1] == NULL)
86			break;
87
88			if ((target_p = find_person(client_p, parv[i+1])) != NULL)
89			{
90			/*
91			* Show real IP for USERHOST on yourself.
92			* This is needed for things like mIRC, which do a server-based
93			* lookup (USERHOST) to figure out what the clients' local IP
94			* is. Useful for things like NAT, and dynamic dial-up users.
95			*/
96			/*
97			* If a lazyleaf relayed us this request, we don't know
98			* the clients real IP.
99			* So, if you're on a lazyleaf, and you send a userhost
100			* including your nick and the nick of someone not known to
101			* the leaf, you'll get your spoofed IP. tough.
102			*/
103			if (MyClient(target_p) && (target_p == source_p))
104			{
105			rl = ircsprintf(response, "%s%s=%c%s@%s ",
106			target_p->name,
107			IsOper(target_p) ? "*" : "",
108			(target_p->away) ? '-' : '+',
109			target_p->username,
110			target_p->sockhost);
111			}
112			else
113			{
114			rl = ircsprintf(response, "%s%s=%c%s@%s ",
115			target_p->name,
116			IsOper(target_p) ? "*" : "",
117			(target_p->away) ? '-' : '+',
118			target_p->username,
119			target_p->host);
120			}
121
122			if ((rl + cur_len) < (IRCD_BUFSIZE-10))
123			{
124			ircsprintf(t,"%s",response);
125			t += rl;
126			cur_len += rl;
127			}
128			else
129			break;
130			}
131			else if ( !ServerInfo.hub && uplink && IsCapable(uplink, CAP_LL) )
132			{
133			t = buf;
134			for( n = 0; n < 5; n++ )
135			{
136			if( parv[n+1] )
137			{
138			rl = ircsprintf(t, "%s ", parv[n+1]);
139			t += rl;
140			}
141			else
142			break;
143			}
144			/* Relay upstream, and let hub reply */
145			sendto_one(uplink, ":%s USERHOST %s", parv[0], buf );
146			return;
147			}
148			}
149
150			sendto_one(source_p, "%s", buf);
151			}