trunk/modules/m_svinfo.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_svinfo.c: Sends TS information for clock & compatibility checks.
 *
 *  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 "client.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.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 void
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;
  }

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

  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,
            "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,
                 "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;
  }

  /*
   * 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,
          "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,
          "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;
  }

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

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:	1309
Committed:	Sun Mar 25 11:24:18 2012 UTC (14 years, 4 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-8/modules/m_svinfo.c*
File size:	4388 byte(s)
Log Message:	- renaming files: ircd_parser.y -> conf_parser.y ircd_lexer.l -> conf_lexer.l s_conf.c -> conf.c s_conf.h -> conf.h s_log.c -> log.c s_log.h -> log.h
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_svinfo.c: Sends TS information for clock & compatibility checks.
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	michael	1230
25	adx	30	#include "stdinc.h"
26			#include "client.h"
27			#include "irc_string.h"
28			#include "ircd.h"
29			#include "numeric.h"
30			#include "send.h"
31	michael	1309	#include "conf.h"
32			#include "log.h"
33	adx	30	#include "parse.h"
34			#include "modules.h"
35
36
37			/*
38			* ms_svinfo - SVINFO message handler
39			* parv[0] = sender prefix
40			* parv[1] = TS_CURRENT for the server
41			* parv[2] = TS_MIN for the server
42			* parv[3] = server is standalone or connected to non-TS only
43			* parv[4] = server's idea of UTC time
44			*/
45			static void
46			ms_svinfo(struct Client client_p, struct Client source_p,
47	michael	1309	int parc, char *parv[])
48	adx	30	{
49			time_t deltat;
50			time_t theirtime;
51
52			if (MyConnect(source_p) && IsUnknown(source_p))
53			{
54			exit_client(source_p, source_p, "Need SERVER before SVINFO");
55			return;
56			}
57
58			if (!IsServer(source_p) \|\| !MyConnect(source_p) \|\| parc < 5)
59			return;
60
61			if (TS_CURRENT < atoi(parv[2]) \|\| atoi(parv[1]) < TS_MIN)
62	michael	1298	{
63			/*
64			* a server with the wrong TS version connected; since we're
65			* TS_ONLY we can't fall back to the non-TS protocol so
66			* we drop the link -orabidoo
67			*/
68			sendto_realops_flags(UMODE_ALL, L_ADMIN,
69	adx	30	"Link %s dropped, wrong TS protocol version (%s,%s)",
70			get_client_name(source_p, SHOW_IP), parv[1], parv[2]);
71	michael	1298	sendto_realops_flags(UMODE_ALL, L_OPER,
72	adx	30	"Link %s dropped, wrong TS protocol version (%s,%s)",
73			get_client_name(source_p, MASK_IP), parv[1], parv[2]);
74	michael	1298	exit_client(source_p, source_p, "Incompatible TS version");
75			return;
76			}
77	adx	30
78			/*
79			* since we're here, might as well set CurrentTime while we're at it
80			*/
81			set_time();
82			theirtime = atol(parv[4]);
83			deltat = abs(theirtime - CurrentTime);
84
85			if (deltat > ConfigFileEntry.ts_max_delta)
86	michael	1298	{
87			sendto_realops_flags(UMODE_ALL, L_ADMIN,
88	adx	30	"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
89			get_client_name(source_p, SHOW_IP),
90			(unsigned long) CurrentTime,
91			(unsigned long) theirtime,
92			(int) deltat);
93	michael	1298	sendto_realops_flags(UMODE_ALL, L_OPER,
94	adx	30	"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
95			get_client_name(source_p, MASK_IP),
96			(unsigned long) CurrentTime,
97			(unsigned long) theirtime,
98			(int) deltat);
99	michael	1298	ilog(LOG_TYPE_IRCD,
100			"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
101			get_client_name(source_p, SHOW_IP),
102			(unsigned long) CurrentTime,
103			(unsigned long) theirtime,
104			(int) deltat);
105			exit_client(source_p, source_p, "Excessive TS delta");
106			return;
107			}
108	adx	30
109			if (deltat > ConfigFileEntry.ts_warn_delta)
110	michael	1298	sendto_realops_flags(UMODE_ALL, L_ALL,
111	adx	30	"Link %s notable TS delta (my TS=%lu, their TS=%lu, delta=%d)",
112			source_p->name,
113			(unsigned long) CurrentTime,
114			(unsigned long) theirtime,
115			(int) deltat);
116			}
117	michael	1230
118			static struct Message svinfo_msgtab = {
119			"SVINFO", 0, 0, 4, MAXPARA, MFLG_SLOW, 0,
120			{m_unregistered, m_ignore, ms_svinfo, m_ignore, m_ignore, m_ignore}
121			};
122
123			static void
124			module_init(void)
125			{
126			mod_add_cmd(&svinfo_msgtab);
127			}
128
129			static void
130			module_exit(void)
131			{
132			mod_del_cmd(&svinfo_msgtab);
133			}
134
135			struct module module_entry = {
136			.node = { NULL, NULL, NULL },
137			.name = NULL,
138			.version = "$Revision$",
139			.handle = NULL,
140			.modinit = module_init,
141			.modexit = module_exit,
142			.flags = 0
143			};