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root/svn/ircd-hybrid-8/modules/m_knock.c
Revision: 1155
Committed: Tue Aug 9 20:27:45 2011 UTC (12 years, 7 months ago) by michael
Content type: text/x-csrc
Original Path: ircd-hybrid/modules/m_knock.c
File size: 5181 byte(s)
Log Message:
- recreate "trunk"

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

Properties

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svn:eol-style native
svn:keywords Id Revision