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1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * m_kick.c: Kicks a user from a channel. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | * | |
24 | * $Id: m_kick.c 3317 2007-03-28 23:17:06Z jilles $ | |
25 | */ | |
26 | ||
27 | #include "stdinc.h" | |
28 | #include "tools.h" | |
29 | #include "channel.h" | |
30 | #include "client.h" | |
31 | #include "irc_string.h" | |
32 | #include "ircd.h" | |
33 | #include "numeric.h" | |
34 | #include "send.h" | |
35 | #include "msg.h" | |
36 | #include "modules.h" | |
37 | #include "parse.h" | |
38 | #include "hash.h" | |
39 | #include "packet.h" | |
40 | #include "s_serv.h" | |
41 | ||
42 | static int m_kick(struct Client *, struct Client *, int, const char **); | |
43 | #define mg_kick { m_kick, 3 } | |
44 | ||
45 | struct Message kick_msgtab = { | |
46 | "KICK", 0, 0, 0, MFLG_SLOW, | |
47 | {mg_unreg, mg_kick, mg_kick, mg_kick, mg_ignore, mg_kick} | |
48 | }; | |
49 | ||
50 | mapi_clist_av1 kick_clist[] = { &kick_msgtab, NULL }; | |
51 | ||
52 | DECLARE_MODULE_AV1(kick, NULL, NULL, kick_clist, NULL, NULL, "$Revision: 3317 $"); | |
53 | ||
54 | /* | |
55 | ** m_kick | |
56 | ** parv[0] = sender prefix | |
57 | ** parv[1] = channel | |
58 | ** parv[2] = client to kick | |
59 | ** parv[3] = kick comment | |
60 | */ | |
61 | static int | |
62 | m_kick(struct Client *client_p, struct Client *source_p, int parc, const char *parv[]) | |
63 | { | |
64 | struct membership *msptr; | |
65 | struct Client *who; | |
66 | struct Channel *chptr; | |
67 | int chasing = 0; | |
68 | char *comment; | |
69 | const char *name; | |
70 | char *p = NULL; | |
71 | const char *user; | |
72 | static char buf[BUFSIZE]; | |
73 | ||
74 | if(MyClient(source_p) && !IsFloodDone(source_p)) | |
75 | flood_endgrace(source_p); | |
76 | ||
77 | *buf = '\0'; | |
78 | if((p = strchr(parv[1], ','))) | |
79 | *p = '\0'; | |
80 | ||
81 | name = parv[1]; | |
82 | ||
83 | chptr = find_channel(name); | |
84 | if(chptr == NULL) | |
85 | { | |
86 | sendto_one_numeric(source_p, ERR_NOSUCHCHANNEL, form_str(ERR_NOSUCHCHANNEL), name); | |
87 | return 0; | |
88 | } | |
89 | ||
90 | if(!IsServer(source_p)) | |
91 | { | |
92 | msptr = find_channel_membership(chptr, source_p); | |
93 | ||
94 | if((msptr == NULL) && MyConnect(source_p)) | |
95 | { | |
96 | sendto_one_numeric(source_p, ERR_NOTONCHANNEL, | |
97 | form_str(ERR_NOTONCHANNEL), name); | |
98 | return 0; | |
99 | } | |
100 | ||
101 | if(!is_chanop(msptr)) | |
102 | { | |
103 | if(MyConnect(source_p)) | |
104 | { | |
105 | sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED), | |
106 | me.name, source_p->name, name); | |
107 | return 0; | |
108 | } | |
109 | ||
110 | /* If its a TS 0 channel, do it the old way */ | |
111 | if(chptr->channelts == 0) | |
112 | { | |
113 | sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED), | |
114 | get_id(&me, source_p), get_id(source_p, source_p), name); | |
115 | return 0; | |
116 | } | |
117 | } | |
118 | ||
119 | /* Its a user doing a kick, but is not showing as chanop locally | |
120 | * its also not a user ON -my- server, and the channel has a TS. | |
121 | * There are two cases we can get to this point then... | |
122 | * | |
123 | * 1) connect burst is happening, and for some reason a legit | |
124 | * op has sent a KICK, but the SJOIN hasn't happened yet or | |
125 | * been seen. (who knows.. due to lag...) | |
126 | * | |
127 | * 2) The channel is desynced. That can STILL happen with TS | |
128 | * | |
129 | * Now, the old code roger wrote, would allow the KICK to | |
130 | * go through. Thats quite legit, but lets weird things like | |
131 | * KICKS by users who appear not to be chanopped happen, | |
132 | * or even neater, they appear not to be on the channel. | |
133 | * This fits every definition of a desync, doesn't it? ;-) | |
134 | * So I will allow the KICK, otherwise, things are MUCH worse. | |
135 | * But I will warn it as a possible desync. | |
136 | * | |
137 | * -Dianora | |
138 | */ | |
139 | } | |
140 | ||
141 | if((p = strchr(parv[2], ','))) | |
142 | *p = '\0'; | |
143 | ||
144 | user = parv[2]; /* strtoken(&p2, parv[2], ","); */ | |
145 | ||
146 | if(!(who = find_chasing(source_p, user, &chasing))) | |
147 | { | |
148 | return 0; | |
149 | } | |
150 | ||
151 | msptr = find_channel_membership(chptr, who); | |
152 | ||
153 | if(msptr != NULL) | |
154 | { | |
155 | if(MyClient(source_p) && IsService(who)) | |
156 | { | |
157 | sendto_one(source_p, form_str(ERR_ISCHANSERVICE), | |
158 | me.name, source_p->name, who->name, chptr->chname); | |
159 | return 0; | |
160 | } | |
161 | ||
162 | comment = LOCAL_COPY((EmptyString(parv[3])) ? who->name : parv[3]); | |
163 | if(strlen(comment) > (size_t) REASONLEN) | |
164 | comment[REASONLEN] = '\0'; | |
165 | ||
166 | /* jdc | |
167 | * - In the case of a server kicking a user (i.e. CLEARCHAN), | |
168 | * the kick should show up as coming from the server which did | |
169 | * the kick. | |
170 | * - Personally, flame and I believe that server kicks shouldn't | |
171 | * be sent anyways. Just waiting for some oper to abuse it... | |
172 | */ | |
173 | if(IsServer(source_p)) | |
174 | sendto_channel_local(ALL_MEMBERS, chptr, ":%s KICK %s %s :%s", | |
175 | source_p->name, name, who->name, comment); | |
176 | else | |
177 | sendto_channel_local(ALL_MEMBERS, chptr, | |
178 | ":%s!%s@%s KICK %s %s :%s", | |
179 | source_p->name, source_p->username, | |
180 | source_p->host, name, who->name, comment); | |
181 | ||
182 | sendto_server(client_p, chptr, CAP_TS6, NOCAPS, | |
183 | ":%s KICK %s %s :%s", | |
184 | use_id(source_p), chptr->chname, use_id(who), comment); | |
185 | sendto_server(client_p, chptr, NOCAPS, CAP_TS6, | |
186 | ":%s KICK %s %s :%s", | |
187 | source_p->name, chptr->chname, who->name, comment); | |
188 | remove_user_from_channel(msptr); | |
189 | } | |
190 | else if (MyClient(source_p)) | |
191 | sendto_one_numeric(source_p, ERR_USERNOTINCHANNEL, | |
192 | form_str(ERR_USERNOTINCHANNEL), user, name); | |
193 | ||
194 | return 0; | |
195 | } |