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root/svn/ircd-hybrid-8/modules/m_svinfo.c
Revision: 1156
Committed: Tue Aug 9 20:29:20 2011 UTC (12 years, 7 months ago) by michael
Content type: text/x-csrc
File size: 4393 byte(s)
Log Message:
- create ircd-hybrid-8 "branch"

File Contents

# Content
1 /*
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 * $Id$
23 */
24 #include "stdinc.h"
25 #include "handlers.h"
26 #include "client.h"
27 #include "common.h" /* TRUE bleah */
28 #include "irc_string.h"
29 #include "ircd.h"
30 #include "numeric.h"
31 #include "send.h"
32 #include "s_conf.h"
33 #include "s_log.h"
34 #include "msg.h"
35 #include "parse.h"
36 #include "modules.h"
37
38
39 static void ms_svinfo(struct Client *, struct Client *, int, char *[]);
40
41 struct Message svinfo_msgtab = {
42 "SVINFO", 0, 0, 4, 0, MFLG_SLOW, 0,
43 {m_unregistered, m_ignore, ms_svinfo, m_ignore, m_ignore, m_ignore}
44 };
45
46 void
47 _modinit(void)
48 {
49 mod_add_cmd(&svinfo_msgtab);
50 }
51
52 void
53 _moddeinit(void)
54 {
55 mod_del_cmd(&svinfo_msgtab);
56 }
57
58 const char *_version = "$Revision$";
59
60 /*
61 * ms_svinfo - SVINFO message handler
62 * parv[0] = sender prefix
63 * parv[1] = TS_CURRENT for the server
64 * parv[2] = TS_MIN for the server
65 * parv[3] = server is standalone or connected to non-TS only
66 * parv[4] = server's idea of UTC time
67 */
68 static void
69 ms_svinfo(struct Client *client_p, struct Client *source_p,
70 int parc, char *parv[])
71 {
72 time_t deltat;
73 time_t theirtime;
74
75 if (MyConnect(source_p) && IsUnknown(source_p))
76 {
77 exit_client(source_p, source_p, "Need SERVER before SVINFO");
78 return;
79 }
80
81 if (!IsServer(source_p) || !MyConnect(source_p) || parc < 5)
82 return;
83
84 if (TS_CURRENT < atoi(parv[2]) || atoi(parv[1]) < TS_MIN)
85 {
86 /*
87 * a server with the wrong TS version connected; since we're
88 * TS_ONLY we can't fall back to the non-TS protocol so
89 * we drop the link -orabidoo
90 */
91 sendto_realops_flags(UMODE_ALL, L_ADMIN,
92 "Link %s dropped, wrong TS protocol version (%s,%s)",
93 get_client_name(source_p, SHOW_IP), parv[1], parv[2]);
94 sendto_realops_flags(UMODE_ALL, L_OPER,
95 "Link %s dropped, wrong TS protocol version (%s,%s)",
96 get_client_name(source_p, MASK_IP), parv[1], parv[2]);
97 exit_client(source_p, source_p, "Incompatible TS version");
98 return;
99 }
100
101 /*
102 * since we're here, might as well set CurrentTime while we're at it
103 */
104 set_time();
105 theirtime = atol(parv[4]);
106 deltat = abs(theirtime - CurrentTime);
107
108 if (deltat > ConfigFileEntry.ts_max_delta)
109 {
110 sendto_realops_flags(UMODE_ALL, L_ADMIN,
111 "Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
112 get_client_name(source_p, SHOW_IP),
113 (unsigned long) CurrentTime,
114 (unsigned long) theirtime,
115 (int) deltat);
116 sendto_realops_flags(UMODE_ALL, L_OPER,
117 "Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
118 get_client_name(source_p, MASK_IP),
119 (unsigned long) CurrentTime,
120 (unsigned long) theirtime,
121 (int) deltat);
122 ilog(L_NOTICE,
123 "Link %s dropped, excessive TS delta (my TS=%lu, their TS=%lu, delta=%d)",
124 get_client_name(source_p, SHOW_IP),
125 (unsigned long) CurrentTime,
126 (unsigned long) theirtime,
127 (int) deltat);
128 exit_client(source_p, source_p, "Excessive TS delta");
129 return;
130 }
131
132 if (deltat > ConfigFileEntry.ts_warn_delta)
133 {
134 sendto_realops_flags(UMODE_ALL, L_ALL,
135 "Link %s notable TS delta (my TS=%lu, their TS=%lu, delta=%d)",
136 source_p->name,
137 (unsigned long) CurrentTime,
138 (unsigned long) theirtime,
139 (int) deltat);
140 }
141 }

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svn:eol-style native
svn:keywords Id Revision