| 1 |
/* |
| 2 |
* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
| 3 |
* |
| 4 |
* Copyright (c) 1997-2014 ircd-hybrid development team |
| 5 |
* |
| 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 |
|
| 22 |
/*! \file m_svinfo.c |
| 23 |
* \brief Includes required functions for processing the SVINFO command. |
| 24 |
* \version $Id$ |
| 25 |
*/ |
| 26 |
|
| 27 |
#include "stdinc.h" |
| 28 |
#include "client.h" |
| 29 |
#include "irc_string.h" |
| 30 |
#include "ircd.h" |
| 31 |
#include "send.h" |
| 32 |
#include "conf.h" |
| 33 |
#include "log.h" |
| 34 |
#include "parse.h" |
| 35 |
#include "modules.h" |
| 36 |
|
| 37 |
|
| 38 |
/*! \brief SVINFO command handler |
| 39 |
* |
| 40 |
* \param source_p Pointer to allocated Client struct from which the message |
| 41 |
* originally comes from. This can be a local or remote client. |
| 42 |
* \param parc Integer holding the number of supplied arguments. |
| 43 |
* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL |
| 44 |
* pointers. |
| 45 |
* \note Valid arguments for this command are: |
| 46 |
* - parv[0] = command |
| 47 |
* - parv[1] = TS_CURRENT for the server |
| 48 |
* - parv[2] = TS_MIN for the server |
| 49 |
* - parv[3] = server is standalone or connected to non-TS only |
| 50 |
* - parv[4] = server's idea of UTC time |
| 51 |
*/ |
| 52 |
static int |
| 53 |
ms_svinfo(struct Client *source_p, int parc, char *parv[]) |
| 54 |
{ |
| 55 |
time_t deltat = 0, theirtime = 0; |
| 56 |
|
| 57 |
if (!IsServer(source_p) || !MyConnect(source_p)) |
| 58 |
return 0; |
| 59 |
|
| 60 |
if (TS_CURRENT < atoi(parv[2]) || atoi(parv[1]) < TS_MIN) |
| 61 |
{ |
| 62 |
/* |
| 63 |
* A server with the wrong TS version connected; since we're |
| 64 |
* TS_ONLY we can't fall back to the non-TS protocol so |
| 65 |
* we drop the link -orabidoo |
| 66 |
*/ |
| 67 |
sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE, |
| 68 |
"Link %s dropped, wrong TS protocol version (%s,%s)", |
| 69 |
get_client_name(source_p, SHOW_IP), parv[1], parv[2]); |
| 70 |
sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE, |
| 71 |
"Link %s dropped, wrong TS protocol version (%s,%s)", |
| 72 |
get_client_name(source_p, MASK_IP), parv[1], parv[2]); |
| 73 |
exit_client(source_p, "Incompatible TS version"); |
| 74 |
return 0; |
| 75 |
} |
| 76 |
|
| 77 |
/* |
| 78 |
* Since we're here, might as well set CurrentTime while we're at it |
| 79 |
*/ |
| 80 |
set_time(); |
| 81 |
|
| 82 |
theirtime = atol(parv[4]); |
| 83 |
deltat = abs(theirtime - CurrentTime); |
| 84 |
|
| 85 |
if (deltat > ConfigFileEntry.ts_max_delta) |
| 86 |
{ |
| 87 |
sendto_realops_flags(UMODE_ALL, L_ADMIN, SEND_NOTICE, |
| 88 |
"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 |
sendto_realops_flags(UMODE_ALL, L_OPER, SEND_NOTICE, |
| 94 |
"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 |
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, "Excessive TS delta"); |
| 106 |
return 0; |
| 107 |
} |
| 108 |
|
| 109 |
if (deltat > ConfigFileEntry.ts_warn_delta) |
| 110 |
sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE, |
| 111 |
"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 |
return 0; |
| 117 |
} |
| 118 |
|
| 119 |
static struct Message svinfo_msgtab = |
| 120 |
{ |
| 121 |
"SVINFO", 0, 0, 5, MAXPARA, MFLG_SLOW, 0, |
| 122 |
{ m_unregistered, m_ignore, ms_svinfo, m_ignore, m_ignore, m_ignore } |
| 123 |
}; |
| 124 |
|
| 125 |
static void |
| 126 |
module_init(void) |
| 127 |
{ |
| 128 |
mod_add_cmd(&svinfo_msgtab); |
| 129 |
} |
| 130 |
|
| 131 |
static void |
| 132 |
module_exit(void) |
| 133 |
{ |
| 134 |
mod_del_cmd(&svinfo_msgtab); |
| 135 |
} |
| 136 |
|
| 137 |
struct module module_entry = |
| 138 |
{ |
| 139 |
.node = { NULL, NULL, NULL }, |
| 140 |
.name = NULL, |
| 141 |
.version = "$Revision$", |
| 142 |
.handle = NULL, |
| 143 |
.modinit = module_init, |
| 144 |
.modexit = module_exit, |
| 145 |
.flags = 0 |
| 146 |
}; |
