trunk/modules/m_svinfo.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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 */

/*! \file m_svinfo.c
 * \brief Includes required functions for processing the SVINFO command.
 * \version $Id$
 */

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


/*
 * ms_svinfo - SVINFO message handler
 *      parv[0] = sender prefix
 *      parv[1] = TS_CURRENT for the server
 *      parv[2] = TS_MIN for the server
 *      parv[3] = server is standalone or connected to non-TS only
 *      parv[4] = server's idea of UTC time
 */
static int
ms_svinfo(struct Client *client_p, struct Client *source_p,
          int parc, char *parv[])
{
  time_t deltat;
  time_t theirtime;

  if (MyConnect(source_p) && IsUnknown(source_p))
  {
    exit_client(source_p, source_p, "Need SERVER before SVINFO");
    return 0;
  }

  if (!IsServer(source_p) || !MyConnect(source_p) || parc < 5)
    return 0;

  if (TS_CURRENT < atoi(parv[2]) || atoi(parv[1]) < TS_MIN)
  {
    /*
     * a server with the wrong TS version connected; since we're
     * TS_ONLY we can't fall back to the non-TS protocol so
     * we drop the link  -orabidoo
     */
    sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
            "Link %s dropped, wrong TS protocol version (%s,%s)",
            get_client_name(source_p, SHOW_IP), parv[1], parv[2]);
    sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
                 "Link %s dropped, wrong TS protocol version (%s,%s)",
                 get_client_name(source_p, MASK_IP), parv[1], parv[2]);
    exit_client(source_p, source_p, "Incompatible TS version");
    return 0;
  }

  /*
   * since we're here, might as well set CurrentTime while we're at it
   */
  set_time();
  theirtime = atol(parv[4]);
  deltat = abs(theirtime - CurrentTime);

  if (deltat > ConfigFileEntry.ts_max_delta)
  {
    sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
          "Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
          get_client_name(source_p, SHOW_IP),
          (unsigned long) CurrentTime,
          (unsigned long) theirtime,
          (int) deltat);
    sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
          "Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
           get_client_name(source_p, MASK_IP),
           (unsigned long) CurrentTime,
           (unsigned long) theirtime,
           (int) deltat);
    ilog(LOG_TYPE_IRCD,
         "Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
         get_client_name(source_p, SHOW_IP),
         (unsigned long) CurrentTime,
         (unsigned long) theirtime,
         (int) deltat);
    exit_client(source_p, source_p, "Excessive TS delta");
    return 0;
  }

  if (deltat > ConfigFileEntry.ts_warn_delta)
    sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                "Link %s notable TS delta (my TS=%lu, their TS=%lu, delta=%d)",
                source_p->name,
                (unsigned long) CurrentTime,
                (unsigned long) theirtime,
                (int) deltat);
  return 0;
}

static struct Message svinfo_msgtab =
{
  "SVINFO", 0, 0, 4, MAXPARA, MFLG_SLOW, 0,
  { m_unregistered, m_ignore, ms_svinfo, m_ignore, m_ignore, m_ignore }
};

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

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

struct module module_entry =
{
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = 0
};
Revision:	2820
Committed:	Wed Jan 15 23:10:26 2014 UTC (12 years, 6 months ago) by michael
Content type:	text/x-csrc
File size:	4483 byte(s)
Log Message:	- Clean up all files in modules/ (fixed indentation, removed whitespaces/tabs) - Fixed copyright years - Made module handlers int type for later use
#	User	Rev	Content
1	adx	30	/*
2	michael	2820	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	2820	* Copyright (c) 1997-2014 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			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19			* USA
20			*/
21	michael	1230
22	michael	2820	/*! \file m_svinfo.c
23			* \brief Includes required functions for processing the SVINFO command.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28			#include "client.h"
29			#include "irc_string.h"
30			#include "ircd.h"
31			#include "send.h"
32	michael	1309	#include "conf.h"
33			#include "log.h"
34	adx	30	#include "parse.h"
35			#include "modules.h"
36
37
38			/*
39			* ms_svinfo - SVINFO message handler
40			* parv[0] = sender prefix
41			* parv[1] = TS_CURRENT for the server
42			* parv[2] = TS_MIN for the server
43			* parv[3] = server is standalone or connected to non-TS only
44			* parv[4] = server's idea of UTC time
45			*/
46	michael	2820	static int
47	adx	30	ms_svinfo(struct Client client_p, struct Client source_p,
48	michael	1309	int parc, char *parv[])
49	adx	30	{
50			time_t deltat;
51			time_t theirtime;
52
53			if (MyConnect(source_p) && IsUnknown(source_p))
54			{
55			exit_client(source_p, source_p, "Need SERVER before SVINFO");
56	michael	2820	return 0;
57	adx	30	}
58
59			if (!IsServer(source_p) \|\| !MyConnect(source_p) \|\| parc < 5)
60	michael	2820	return 0;
61	adx	30
62			if (TS_CURRENT < atoi(parv[2]) \|\| atoi(parv[1]) < TS_MIN)
63	michael	1298	{
64			/*
65			* a server with the wrong TS version connected; since we're
66			* TS_ONLY we can't fall back to the non-TS protocol so
67			* we drop the link -orabidoo
68			*/
69	michael	1618	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
70	adx	30	"Link %s dropped, wrong TS protocol version (%s,%s)",
71			get_client_name(source_p, SHOW_IP), parv[1], parv[2]);
72	michael	1618	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
73	adx	30	"Link %s dropped, wrong TS protocol version (%s,%s)",
74			get_client_name(source_p, MASK_IP), parv[1], parv[2]);
75	michael	1298	exit_client(source_p, source_p, "Incompatible TS version");
76	michael	2820	return 0;
77	michael	1298	}
78	adx	30
79			/*
80			* since we're here, might as well set CurrentTime while we're at it
81			*/
82	michael	2820	set_time();
83	adx	30	theirtime = atol(parv[4]);
84			deltat = abs(theirtime - CurrentTime);
85
86			if (deltat > ConfigFileEntry.ts_max_delta)
87	michael	1298	{
88	michael	1618	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
89	adx	30	"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
90			get_client_name(source_p, SHOW_IP),
91			(unsigned long) CurrentTime,
92			(unsigned long) theirtime,
93			(int) deltat);
94	michael	1618	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
95	adx	30	"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
96			get_client_name(source_p, MASK_IP),
97			(unsigned long) CurrentTime,
98			(unsigned long) theirtime,
99			(int) deltat);
100	michael	1298	ilog(LOG_TYPE_IRCD,
101			"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
102			get_client_name(source_p, SHOW_IP),
103			(unsigned long) CurrentTime,
104			(unsigned long) theirtime,
105			(int) deltat);
106			exit_client(source_p, source_p, "Excessive TS delta");
107	michael	2820	return 0;
108	michael	1298	}
109	adx	30
110			if (deltat > ConfigFileEntry.ts_warn_delta)
111	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
112	adx	30	"Link %s notable TS delta (my TS=%lu, their TS=%lu, delta=%d)",
113			source_p->name,
114			(unsigned long) CurrentTime,
115			(unsigned long) theirtime,
116			(int) deltat);
117	michael	2820	return 0;
118	adx	30	}
119	michael	1230
120	michael	2820	static struct Message svinfo_msgtab =
121			{
122	michael	1230	"SVINFO", 0, 0, 4, MAXPARA, MFLG_SLOW, 0,
123	michael	2820	{ m_unregistered, m_ignore, ms_svinfo, m_ignore, m_ignore, m_ignore }
124	michael	1230	};
125
126			static void
127			module_init(void)
128			{
129			mod_add_cmd(&svinfo_msgtab);
130			}
131
132			static void
133			module_exit(void)
134			{
135			mod_del_cmd(&svinfo_msgtab);
136			}
137
138	michael	2820	struct module module_entry =
139			{
140	michael	1230	.node = { NULL, NULL, NULL },
141			.name = NULL,
142			.version = "$Revision$",
143			.handle = NULL,
144			.modinit = module_init,
145			.modexit = module_exit,
146			.flags = 0
147			};