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root/svn/ircd-hybrid-8/modules/m_knock.c
Revision: 1028
Committed: Sun Nov 8 13:03:38 2009 UTC (14 years, 4 months ago) by michael
Content type: text/x-csrc
Original Path: ircd-hybrid/modules/m_knock.c
File size: 5211 byte(s)
Log Message:
- move ircd-hybrid-7.2 to trunk

File Contents

# User Rev Content
1 adx 30 /*
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 knight 31 * $Id$
23 adx 30 */
24    
25     #include "stdinc.h"
26 michael 1011 #include "list.h"
27 adx 30 #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 michael 885 static void m_knock(struct Client *, struct Client *, int, char *[]);
45 adx 30
46     struct Message knock_msgtab = {
47     "KNOCK", 0, 0, 2, 0, MFLG_SLOW, 0,
48 michael 885 { m_unregistered, m_knock, m_knock, m_ignore, m_knock, m_ignore }
49 adx 30 };
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 knight 31 const char *_version = "$Revision$";
69 adx 30 #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 michael 885 struct Channel *chptr = NULL;
90 adx 30
91 michael 885 if (EmptyString(parv[1]))
92 adx 30 {
93     sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
94     me.name, source_p->name, "KNOCK");
95     return;
96     }
97    
98 michael 885 if (!ConfigChannel.use_knock && MyClient(source_p))
99 adx 30 {
100 michael 885 sendto_one(source_p, form_str(ERR_KNOCKDISABLED),
101     me.name, source_p->name);
102 adx 30 return;
103     }
104    
105 michael 885 if ((chptr = hash_find_channel(parv[1])) == NULL)
106 adx 30 {
107 michael 885 sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
108     me.name, source_p->name, parv[1]);
109 adx 30 return;
110     }
111    
112     /* Normal channel, just be sure they aren't on it */
113     if (IsMember(source_p, chptr))
114     {
115 michael 885 sendto_one(source_p, form_str(ERR_KNOCKONCHAN), me.name,
116     source_p->name, chptr->chname);
117 adx 30 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 michael 885 sendto_one(source_p, form_str(ERR_CHANOPEN), me.name,
125     source_p->name, chptr->chname);
126 adx 30 return;
127     }
128    
129 michael 885 if (MyClient(source_p))
130 adx 30 {
131 michael 886 /*
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 michael 885 {
136     sendto_one(source_p, form_str(ERR_CANNOTSENDTOCHAN),
137     me.name, source_p->name, chptr->chname);
138     return;
139     }
140 adx 30
141 michael 885 /*
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 adx 30
156 michael 885 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 adx 30
163 michael 885 source_p->localClient->last_knock = CurrentTime;
164 adx 30
165 michael 885 sendto_one(source_p, form_str(RPL_KNOCKDLVR), me.name,
166     source_p->name, chptr->chname);
167     }
168 adx 30
169     chptr->last_knock = CurrentTime;
170    
171 michael 885 if (ConfigChannel.use_knock)
172 michael 1011 sendto_channel_local(CHFL_CHANOP, 0, chptr, form_str(RPL_KNOCK),
173 michael 885 me.name, chptr->chname, chptr->chname,
174     source_p->name, source_p->username,
175     source_p->host);
176 adx 30
177 michael 885 sendto_server(client_p, chptr, CAP_KNOCK|CAP_TS6, NOCAPS,
178 michael 886 ":%s KNOCK %s", ID(source_p), chptr->chname);
179 michael 885 sendto_server(client_p, chptr, CAP_KNOCK, CAP_TS6,
180 michael 886 ":%s KNOCK %s", source_p->name, chptr->chname);
181 adx 30 }

Properties

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