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root/svn/ircd-hybrid-8/modules/m_knock.c
Revision: 1011
Committed: Fri Sep 18 10:14:09 2009 UTC (14 years, 6 months ago) by michael
Content type: text/x-csrc
Original Path: ircd-hybrid-7.2/modules/m_knock.c
File size: 5211 byte(s)
Log Message:
- move list manipulation routines from tools.c to list.c
- mem_frob() goes to memory.c
- sort out redundant/unneeded header includes

File Contents

# Content
1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * m_knock.c: Requests to be invited to a channel.
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
25 #include "stdinc.h"
26 #include "list.h"
27 #include "handlers.h"
28 #include "channel.h"
29 #include "channel_mode.h"
30 #include "client.h"
31 #include "hash.h"
32 #include "irc_string.h"
33 #include "sprintf_irc.h"
34 #include "ircd.h"
35 #include "numeric.h"
36 #include "send.h"
37 #include "s_conf.h"
38 #include "msg.h"
39 #include "parse.h"
40 #include "modules.h"
41 #include "s_serv.h"
42 #include "s_user.h"
43
44 static void m_knock(struct Client *, struct Client *, int, char *[]);
45
46 struct Message knock_msgtab = {
47 "KNOCK", 0, 0, 2, 0, MFLG_SLOW, 0,
48 { m_unregistered, m_knock, m_knock, m_ignore, m_knock, m_ignore }
49 };
50
51 #ifndef STATIC_MODULES
52 void
53 _modinit(void)
54 {
55 mod_add_cmd(&knock_msgtab);
56 add_capability("KNOCK", CAP_KNOCK, 1);
57 add_isupport("KNOCK", NULL, -1);
58 }
59
60 void
61 _moddeinit(void)
62 {
63 mod_del_cmd(&knock_msgtab);
64 delete_capability("KNOCK");
65 delete_isupport("KNOCK");
66 }
67
68 const char *_version = "$Revision$";
69 #endif
70
71 /* m_knock
72 * parv[0] = sender prefix
73 * parv[1] = channel
74 *
75 * The KNOCK command has the following syntax:
76 * :<sender> KNOCK <channel>
77 *
78 * If a user is not banned from the channel they can use the KNOCK
79 * command to have the server NOTICE the channel operators notifying
80 * they would like to join. Helpful if the channel is invite-only, the
81 * key is forgotten, or the channel is full (INVITE can bypass each one
82 * of these conditions. Concept by Dianora <db@db.net> and written by
83 * <anonymous>
84 */
85 static void
86 m_knock(struct Client *client_p, struct Client *source_p,
87 int parc, char *parv[])
88 {
89 struct Channel *chptr = NULL;
90
91 if (EmptyString(parv[1]))
92 {
93 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
94 me.name, source_p->name, "KNOCK");
95 return;
96 }
97
98 if (!ConfigChannel.use_knock && MyClient(source_p))
99 {
100 sendto_one(source_p, form_str(ERR_KNOCKDISABLED),
101 me.name, source_p->name);
102 return;
103 }
104
105 if ((chptr = hash_find_channel(parv[1])) == NULL)
106 {
107 sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
108 me.name, source_p->name, parv[1]);
109 return;
110 }
111
112 /* Normal channel, just be sure they aren't on it */
113 if (IsMember(source_p, chptr))
114 {
115 sendto_one(source_p, form_str(ERR_KNOCKONCHAN), me.name,
116 source_p->name, chptr->chname);
117 return;
118 }
119
120 if (!((chptr->mode.mode & MODE_INVITEONLY) || (*chptr->mode.key) ||
121 (chptr->mode.limit && dlink_list_length(&chptr->members) >=
122 chptr->mode.limit)))
123 {
124 sendto_one(source_p, form_str(ERR_CHANOPEN), me.name,
125 source_p->name, chptr->chname);
126 return;
127 }
128
129 if (MyClient(source_p))
130 {
131 /*
132 * Don't allow a knock if the user is banned, or the channel is private
133 */
134 if (PrivateChannel(chptr) || is_banned(chptr, source_p))
135 {
136 sendto_one(source_p, form_str(ERR_CANNOTSENDTOCHAN),
137 me.name, source_p->name, chptr->chname);
138 return;
139 }
140
141 /*
142 * flood protection:
143 * allow one knock per user per knock_delay
144 * allow one knock per channel per knock_delay_channel
145 *
146 * we only limit local requests..
147 */
148 if ((source_p->localClient->last_knock + ConfigChannel.knock_delay) >
149 CurrentTime)
150 {
151 sendto_one(source_p, form_str(ERR_TOOMANYKNOCK), me.name,
152 source_p->name, chptr->chname, "user");
153 return;
154 }
155
156 if ((chptr->last_knock + ConfigChannel.knock_delay_channel) > CurrentTime)
157 {
158 sendto_one(source_p, form_str(ERR_TOOMANYKNOCK), me.name,
159 source_p->name, chptr->chname, "channel");
160 return;
161 }
162
163 source_p->localClient->last_knock = CurrentTime;
164
165 sendto_one(source_p, form_str(RPL_KNOCKDLVR), me.name,
166 source_p->name, chptr->chname);
167 }
168
169 chptr->last_knock = CurrentTime;
170
171 if (ConfigChannel.use_knock)
172 sendto_channel_local(CHFL_CHANOP, 0, chptr, form_str(RPL_KNOCK),
173 me.name, chptr->chname, chptr->chname,
174 source_p->name, source_p->username,
175 source_p->host);
176
177 sendto_server(client_p, chptr, CAP_KNOCK|CAP_TS6, NOCAPS,
178 ":%s KNOCK %s", ID(source_p), chptr->chname);
179 sendto_server(client_p, chptr, CAP_KNOCK, CAP_TS6,
180 ":%s KNOCK %s", source_p->name, chptr->chname);
181 }

Properties

Name Value
svn:eol-style native
svn:keywords Id Revision