8.2.x/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] = command
 *      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 *source_p, int parc, char *parv[])
{
  time_t deltat = 0, theirtime = 0;

  if (!IsServer(source_p) || !MyConnect(source_p))
    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, "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, "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, 5, 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:	3172
Committed:	Sun Mar 16 12:24:25 2014 UTC (11 years, 5 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid/trunk/modules/m_svinfo.c*
File size:	4270 byte(s)
Log Message:	- m_svinfo.c: minimum required argument count is 5. Remove redundant test on parc in ms_svinfo()
#	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	michael	3096	* parv[0] = command
41	adx	30	* 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	michael	3156	ms_svinfo(struct Client source_p, int parc, char parv[])
48	adx	30	{
49	michael	3171	time_t deltat = 0, theirtime = 0;
50	adx	30
51	michael	3172	if (!IsServer(source_p) \|\| !MyConnect(source_p))
52	michael	2820	return 0;
53	adx	30
54			if (TS_CURRENT < atoi(parv[2]) \|\| atoi(parv[1]) < TS_MIN)
55	michael	1298	{
56			/*
57			* a server with the wrong TS version connected; since we're
58			* TS_ONLY we can't fall back to the non-TS protocol so
59			* we drop the link -orabidoo
60			*/
61	michael	1618	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
62	adx	30	"Link %s dropped, wrong TS protocol version (%s,%s)",
63			get_client_name(source_p, SHOW_IP), parv[1], parv[2]);
64	michael	1618	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
65	adx	30	"Link %s dropped, wrong TS protocol version (%s,%s)",
66			get_client_name(source_p, MASK_IP), parv[1], parv[2]);
67	michael	3171	exit_client(source_p, "Incompatible TS version");
68	michael	2820	return 0;
69	michael	1298	}
70	adx	30
71			/*
72			* since we're here, might as well set CurrentTime while we're at it
73			*/
74	michael	2820	set_time();
75	adx	30	theirtime = atol(parv[4]);
76			deltat = abs(theirtime - CurrentTime);
77
78			if (deltat > ConfigFileEntry.ts_max_delta)
79	michael	1298	{
80	michael	1618	sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE,
81	adx	30	"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
82			get_client_name(source_p, SHOW_IP),
83			(unsigned long) CurrentTime,
84			(unsigned long) theirtime,
85			(int) deltat);
86	michael	1618	sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE,
87	adx	30	"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
88			get_client_name(source_p, MASK_IP),
89			(unsigned long) CurrentTime,
90			(unsigned long) theirtime,
91			(int) deltat);
92	michael	1298	ilog(LOG_TYPE_IRCD,
93			"Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
94			get_client_name(source_p, SHOW_IP),
95			(unsigned long) CurrentTime,
96			(unsigned long) theirtime,
97			(int) deltat);
98	michael	3171	exit_client(source_p, "Excessive TS delta");
99	michael	2820	return 0;
100	michael	1298	}
101	adx	30
102			if (deltat > ConfigFileEntry.ts_warn_delta)
103	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
104	adx	30	"Link %s notable TS delta (my TS=%lu, their TS=%lu, delta=%d)",
105			source_p->name,
106			(unsigned long) CurrentTime,
107			(unsigned long) theirtime,
108			(int) deltat);
109	michael	2820	return 0;
110	adx	30	}
111	michael	1230
112	michael	2820	static struct Message svinfo_msgtab =
113			{
114	michael	3172	"SVINFO", 0, 0, 5, MAXPARA, MFLG_SLOW, 0,
115	michael	2820	{ m_unregistered, m_ignore, ms_svinfo, m_ignore, m_ignore, m_ignore }
116	michael	1230	};
117
118			static void
119			module_init(void)
120			{
121			mod_add_cmd(&svinfo_msgtab);
122			}
123
124			static void
125			module_exit(void)
126			{
127			mod_del_cmd(&svinfo_msgtab);
128			}
129
130	michael	2820	struct module module_entry =
131			{
132	michael	1230	.node = { NULL, NULL, NULL },
133			.name = NULL,
134			.version = "$Revision$",
135			.handle = NULL,
136			.modinit = module_init,
137			.modexit = module_exit,
138			.flags = 0
139			};