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root/svn/ircd-hybrid/branches/8.2.x/modules/m_svinfo.c
Revision: 8436
Committed: Thu Mar 29 09:04:53 2018 UTC (6 years ago) by michael
Content type: text/x-csrc
File size: 4792 byte(s)
Log Message:
- Stylistic changes

File Contents

# Content
1 /*
2 * ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3 *
4 * Copyright (c) 1997-2018 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
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] = unused
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 if (!IsServer(source_p) || !MyConnect(source_p))
56 return 0;
57
58 if (TS_CURRENT < atoi(parv[2]) || atoi(parv[1]) < TS_MIN)
59 {
60 /*
61 * A server with the wrong TS version connected; since we're
62 * TS_ONLY we can't fall back to the non-TS protocol so
63 * we drop the link -orabidoo
64 */
65 sendto_realops_flags(UMODE_SERVNOTICE, L_ADMIN, SEND_NOTICE,
66 "Link %s dropped, wrong TS protocol version (%s,%s)",
67 client_get_name(source_p, SHOW_IP), parv[1], parv[2]);
68 sendto_realops_flags(UMODE_SERVNOTICE, L_OPER, SEND_NOTICE,
69 "Link %s dropped, wrong TS protocol version (%s,%s)",
70 client_get_name(source_p, MASK_IP), parv[1], parv[2]);
71 ilog(LOG_TYPE_IRCD,
72 "Link %s dropped, wrong TS protocol version (%s,%s)",
73 client_get_name(source_p, SHOW_IP), parv[1], parv[2]);
74
75 exit_client(source_p, "Incompatible TS version");
76 return 0;
77 }
78
79 /*
80 * Since we're here, might as well set CurrentTime while we're at it
81 */
82 set_time();
83
84 intmax_t theirtime = strtoimax(parv[4], NULL, 10);
85 intmax_t deltat = imaxabs(theirtime - CurrentTime);
86
87 if (deltat > ConfigGeneral.ts_max_delta)
88 {
89 sendto_realops_flags(UMODE_SERVNOTICE, L_ADMIN, SEND_NOTICE,
90 "Link %s dropped, excessive TS delta (my TS=%ju, their TS=%ji, delta=%ji)",
91 client_get_name(source_p, SHOW_IP), CurrentTime, theirtime, deltat);
92 sendto_realops_flags(UMODE_SERVNOTICE, L_OPER, SEND_NOTICE,
93 "Link %s dropped, excessive TS delta (my TS=%ju, their TS=%ji, delta=%ji)",
94 client_get_name(source_p, MASK_IP), CurrentTime, theirtime, deltat);
95 ilog(LOG_TYPE_IRCD,
96 "Link %s dropped, excessive TS delta (my TS=%ju, their TS=%ji, delta=%ji)",
97 client_get_name(source_p, SHOW_IP), CurrentTime, theirtime, deltat);
98
99 exit_client(source_p, "Excessive TS delta");
100 return 0;
101 }
102
103 if (deltat > ConfigGeneral.ts_warn_delta)
104 {
105 sendto_realops_flags(UMODE_SERVNOTICE, L_ADMIN, SEND_NOTICE,
106 "Link %s notable TS delta (my TS=%ju, their TS=%ji, delta=%ji)",
107 client_get_name(source_p, SHOW_IP), CurrentTime, theirtime, deltat);
108 sendto_realops_flags(UMODE_SERVNOTICE, L_OPER, SEND_NOTICE,
109 "Link %s notable TS delta (my TS=%ju, their TS=%ji, delta=%ji)",
110 client_get_name(source_p, MASK_IP), CurrentTime, theirtime, deltat);
111 }
112
113 return 0;
114 }
115
116 static struct Message svinfo_msgtab =
117 {
118 .cmd = "SVINFO",
119 .args_min = 5,
120 .args_max = MAXPARA,
121 .handlers[UNREGISTERED_HANDLER] = m_unregistered,
122 .handlers[CLIENT_HANDLER] = m_ignore,
123 .handlers[SERVER_HANDLER] = ms_svinfo,
124 .handlers[ENCAP_HANDLER] = m_ignore,
125 .handlers[OPER_HANDLER] = m_ignore
126 };
127
128 static void
129 module_init(void)
130 {
131 mod_add_cmd(&svinfo_msgtab);
132 }
133
134 static void
135 module_exit(void)
136 {
137 mod_del_cmd(&svinfo_msgtab);
138 }
139
140 struct module module_entry =
141 {
142 .version = "$Revision$",
143 .modinit = module_init,
144 .modexit = module_exit,
145 };

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