/[svn]/ircd-hybrid/modules/core/m_kick.c
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Contents of /ircd-hybrid/modules/core/m_kick.c

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Revision 30 - (show annotations)
Sun Oct 2 20:03:27 2005 UTC (15 years, 8 months ago) by adx
File MIME type: text/x-chdr
File size: 6883 byte(s)
- imported sources
- can be moved later according to the directory/branching scheme,
  but we need the svn up

1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * m_kick.c: Kicks a user from 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: m_kick.c,v 1.75 2005/09/24 12:38:38 michael Exp $
23 */
24
25 #include "stdinc.h"
26 #include "tools.h"
27 #include "handlers.h"
28 #include "channel.h"
29 #include "channel_mode.h"
30 #include "common.h"
31 #include "client.h"
32 #include "irc_string.h"
33 #include "ircd.h"
34 #include "numeric.h"
35 #include "send.h"
36 #include "msg.h"
37 #include "modules.h"
38 #include "parse.h"
39 #include "hash.h"
40 #include "packet.h"
41 #include "s_serv.h"
42
43
44 static void m_kick(struct Client *, struct Client *, int, char *[]);
45
46 struct Message kick_msgtab = {
47 "KICK", 0, 0, 3, 0, MFLG_SLOW, 0,
48 {m_unregistered, m_kick, m_kick, m_ignore, m_kick, m_ignore}
49 };
50
51 #ifndef STATIC_MODULES
52 void
53 _modinit(void)
54 {
55 mod_add_cmd(&kick_msgtab);
56 }
57
58 void
59 _moddeinit(void)
60 {
61 mod_del_cmd(&kick_msgtab);
62 }
63
64 const char *_version = "$Revision: 1.75 $";
65 #endif
66
67 /* m_kick()
68 * parv[0] = sender prefix
69 * parv[1] = channel
70 * parv[2] = client to kick
71 * parv[3] = kick comment
72 */
73 static void
74 m_kick(struct Client *client_p, struct Client *source_p,
75 int parc, char *parv[])
76 {
77 struct Client *who;
78 struct Channel *chptr;
79 int chasing = 0;
80 char *comment;
81 char *name;
82 char *p = NULL;
83 char *user;
84 const char *from, *to;
85 struct Membership *ms = NULL;
86 struct Membership *ms_target;
87
88 if (!MyConnect(source_p) && IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
89 {
90 from = me.id;
91 to = source_p->id;
92 }
93 else
94 {
95 from = me.name;
96 to = source_p->name;
97 }
98
99 if (*parv[2] == '\0')
100 {
101 sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
102 from, to, "KICK");
103 return;
104 }
105
106 if (MyClient(source_p) && !IsFloodDone(source_p))
107 flood_endgrace(source_p);
108
109 comment = (EmptyString(parv[3])) ? parv[2] : parv[3];
110 if (strlen(comment) > (size_t)KICKLEN)
111 comment[KICKLEN] = '\0';
112
113 name = parv[1];
114 while (*name == ',')
115 name++;
116
117 if ((p = strchr(name,',')) != NULL)
118 *p = '\0';
119 if (*name == '\0')
120 return;
121
122 if ((chptr = hash_find_channel(name)) == NULL)
123 {
124 sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
125 from, to, name);
126 return;
127 }
128
129 if (!IsServer(source_p))
130 {
131 if ((ms = find_channel_link(source_p, chptr)) == NULL)
132 {
133 if (MyConnect(source_p))
134 {
135 sendto_one(source_p, form_str(ERR_NOTONCHANNEL),
136 me.name, source_p->name, name);
137 return;
138 }
139 }
140
141 if (!has_member_flags(ms, CHFL_CHANOP|CHFL_HALFOP))
142 {
143 /* was a user, not a server, and user isn't seen as a chanop here */
144 if (MyConnect(source_p))
145 {
146 /* user on _my_ server, with no chanops.. so go away */
147 sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
148 me.name, source_p->name, name);
149 return;
150 }
151
152 if (chptr->channelts == 0)
153 {
154 /* If its a TS 0 channel, do it the old way */
155 sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
156 from, to, name);
157 return;
158 }
159
160 /* Its a user doing a kick, but is not showing as chanop locally
161 * its also not a user ON -my- server, and the channel has a TS.
162 * There are two cases we can get to this point then...
163 *
164 * 1) connect burst is happening, and for some reason a legit
165 * op has sent a KICK, but the SJOIN hasn't happened yet or
166 * been seen. (who knows.. due to lag...)
167 *
168 * 2) The channel is desynced. That can STILL happen with TS
169 *
170 * Now, the old code roger wrote, would allow the KICK to
171 * go through. Thats quite legit, but lets weird things like
172 * KICKS by users who appear not to be chanopped happen,
173 * or even neater, they appear not to be on the channel.
174 * This fits every definition of a desync, doesn't it? ;-)
175 * So I will allow the KICK, otherwise, things are MUCH worse.
176 * But I will warn it as a possible desync.
177 *
178 * -Dianora
179 */
180 }
181 }
182
183 user = parv[2];
184
185 while (*user == ',')
186 user++;
187
188 if ((p = strchr(user, ',')) != NULL)
189 *p = '\0';
190
191 if (*user == '\0')
192 return;
193
194 if ((who = find_chasing(client_p, source_p, user, &chasing)) == NULL)
195 return;
196
197 if ((ms_target = find_channel_link(who, chptr)) != NULL)
198 {
199 #ifdef HALFOPS
200 /* half ops cannot kick other halfops on private channels */
201 if (has_member_flags(ms, CHFL_HALFOP) && !has_member_flags(ms, CHFL_CHANOP))
202 {
203 if (((chptr->mode.mode & MODE_PRIVATE) && has_member_flags(ms_target,
204 CHFL_CHANOP|CHFL_HALFOP)) || has_member_flags(ms_target, CHFL_CHANOP))
205 {
206 sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED),
207 me.name, source_p->name, name);
208 return;
209 }
210 }
211 #endif
212
213 /* jdc
214 * - In the case of a server kicking a user (i.e. CLEARCHAN),
215 * the kick should show up as coming from the server which did
216 * the kick.
217 * - Personally, flame and I believe that server kicks shouldn't
218 * be sent anyways. Just waiting for some oper to abuse it...
219 */
220 if (IsServer(source_p))
221 sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s KICK %s %s :%s",
222 source_p->name, name, who->name, comment);
223 else
224 sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s!%s@%s KICK %s %s :%s",
225 source_p->name, source_p->username,
226 source_p->host, name, who->name, comment);
227
228 sendto_server(client_p, NULL, chptr, CAP_TS6, NOCAPS, NOFLAGS,
229 ":%s KICK %s %s :%s",
230 ID(source_p), chptr->chname, ID(who), comment);
231 sendto_server(client_p, NULL, chptr, NOCAPS, CAP_TS6, NOFLAGS,
232 ":%s KICK %s %s :%s", source_p->name, chptr->chname,
233 who->name, comment);
234
235 remove_user_from_channel(ms_target);
236 }
237 else
238 sendto_one(source_p, form_str(ERR_USERNOTINCHANNEL),
239 from, to, user, name);
240 }

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