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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_svinfo.c: Sends TS information for clock & compatibility checks. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | * | |
24 | * $Id: m_svinfo.c 494 2006-01-15 16:08:28Z jilles $ | |
25 | */ | |
26 | #include "stdinc.h" | |
27 | #include "client.h" | |
28 | #include "common.h" /* TRUE bleah */ | |
4562c604 | 29 | #include "match.h" |
212380e3 AC |
30 | #include "ircd.h" |
31 | #include "numeric.h" | |
32 | #include "send.h" | |
33 | #include "s_conf.h" | |
4016731b | 34 | #include "logger.h" |
212380e3 AC |
35 | #include "msg.h" |
36 | #include "parse.h" | |
37 | #include "modules.h" | |
38 | ||
39 | static int ms_svinfo(struct Client *, struct Client *, int, const char **); | |
40 | ||
41 | struct Message svinfo_msgtab = { | |
42 | "SVINFO", 0, 0, 0, MFLG_SLOW, | |
43 | {mg_unreg, mg_ignore, mg_ignore, {ms_svinfo, 5}, mg_ignore, mg_ignore} | |
44 | }; | |
45 | ||
46 | mapi_clist_av1 svinfo_clist[] = { &svinfo_msgtab, NULL }; | |
47 | DECLARE_MODULE_AV1(svinfo, NULL, NULL, svinfo_clist, NULL, NULL, "$Revision: 494 $"); | |
48 | ||
49 | /* | |
50 | * ms_svinfo - SVINFO message handler | |
51 | * parv[0] = sender prefix | |
52 | * parv[1] = TS_CURRENT for the server | |
53 | * parv[2] = TS_MIN for the server | |
54 | * parv[3] = unused, send 0 | |
55 | * parv[4] = server's idea of UTC time | |
56 | */ | |
57 | static int | |
58 | ms_svinfo(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
59 | { | |
60 | signed int deltat; | |
61 | time_t theirtime; | |
62433315 | 62 | char squitreason[120]; |
212380e3 AC |
63 | |
64 | /* SVINFO isnt remote. */ | |
65 | if(source_p != client_p) | |
66 | return 0; | |
67 | ||
68 | if(TS_CURRENT < atoi(parv[2]) || atoi(parv[1]) < TS_MIN) | |
69 | { | |
70 | /* TS version is too low on one of the sides, drop the link */ | |
71 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
72 | "Link %s dropped, wrong TS protocol version (%s,%s)", | |
b3ebc7ab | 73 | source_p->name, parv[1], parv[2]); |
c2f73e5d | 74 | rb_snprintf(squitreason, sizeof squitreason, "Incompatible TS version (%s,%s)", |
62433315 JT |
75 | parv[1], parv[2]); |
76 | exit_client(source_p, source_p, source_p, squitreason); | |
212380e3 AC |
77 | return 0; |
78 | } | |
79 | ||
80 | /* | |
e3354945 | 81 | * since we're here, might as well set rb_current_time() while we're at it |
212380e3 | 82 | */ |
519bd854 | 83 | rb_set_time(); |
212380e3 | 84 | theirtime = atol(parv[4]); |
e3354945 | 85 | deltat = abs(theirtime - rb_current_time()); |
212380e3 AC |
86 | |
87 | if(deltat > ConfigFileEntry.ts_max_delta) | |
88 | { | |
89 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
90 | "Link %s dropped, excessive TS delta" | |
91 | " (my TS=%ld, their TS=%ld, delta=%d)", | |
b3ebc7ab | 92 | source_p->name, |
e3354945 | 93 | (long) rb_current_time(), (long) theirtime, deltat); |
212380e3 AC |
94 | ilog(L_SERVER, |
95 | "Link %s dropped, excessive TS delta" | |
96 | " (my TS=%ld, their TS=%ld, delta=%d)", | |
e3354945 | 97 | log_client_name(source_p, SHOW_IP), (long) rb_current_time(), (long) theirtime, deltat); |
c2f73e5d | 98 | rb_snprintf(squitreason, sizeof squitreason, "Excessive TS delta (my TS=%ld, their TS=%ld, delta=%d)", |
e3354945 | 99 | (long) rb_current_time(), (long) theirtime, deltat); |
62433315 | 100 | exit_client(source_p, source_p, source_p, squitreason); |
212380e3 AC |
101 | return 0; |
102 | } | |
103 | ||
104 | if(deltat > ConfigFileEntry.ts_warn_delta) | |
105 | { | |
34c10ff5 | 106 | sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, |
212380e3 AC |
107 | "Link %s notable TS delta" |
108 | " (my TS=%ld, their TS=%ld, delta=%d)", | |
e3354945 | 109 | source_p->name, (long) rb_current_time(), (long) theirtime, deltat); |
212380e3 AC |
110 | } |
111 | ||
112 | return 0; | |
113 | } | |
114 |