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1 | /* | |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * channel.h: The ircd channel header. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2004 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: channel.h 3580 2007-11-07 23:45:14Z jilles $ | |
25 | */ | |
26 | ||
27 | #ifndef INCLUDED_channel_h | |
28 | #define INCLUDED_channel_h | |
29 | ||
30 | #define MODEBUFLEN 200 | |
31 | ||
32 | /* Maximum mode changes allowed per client, per server is different */ | |
33 | #define MAXMODEPARAMS 4 | |
34 | #define MAXMODEPARAMSSERV 10 | |
35 | ||
36 | struct Client; | |
37 | ||
38 | /* mode structure for channels */ | |
39 | struct Mode | |
40 | { | |
41 | unsigned int mode; | |
42 | int limit; | |
43 | char key[KEYLEN]; | |
44 | unsigned int join_num; | |
45 | unsigned int join_time; | |
46 | char forward[LOC_CHANNELLEN + 1]; | |
47 | }; | |
48 | ||
49 | /* channel structure */ | |
50 | struct Channel | |
51 | { | |
52 | rb_dlink_node node; | |
53 | struct Mode mode; | |
54 | char *mode_lock; | |
55 | char *topic; | |
56 | char *topic_info; | |
57 | time_t topic_time; | |
58 | time_t last_knock; /* don't allow knock to flood */ | |
59 | ||
60 | rb_dlink_list members; /* channel members */ | |
61 | rb_dlink_list locmembers; /* local channel members */ | |
62 | ||
63 | rb_dlink_list invites; | |
64 | rb_dlink_list banlist; | |
65 | rb_dlink_list exceptlist; | |
66 | rb_dlink_list invexlist; | |
67 | rb_dlink_list quietlist; | |
68 | ||
69 | time_t first_received_message_time; /* channel flood control */ | |
70 | int received_number_of_privmsgs; | |
71 | int flood_noticed; | |
72 | ||
73 | unsigned int join_count; /* joins within delta */ | |
74 | unsigned int join_delta; /* last ts of join */ | |
75 | ||
76 | unsigned long bants; | |
77 | time_t channelts; | |
78 | char *chname; | |
79 | }; | |
80 | ||
81 | struct membership | |
82 | { | |
83 | rb_dlink_node channode; | |
84 | rb_dlink_node locchannode; | |
85 | rb_dlink_node usernode; | |
86 | ||
87 | struct Channel *chptr; | |
88 | struct Client *client_p; | |
89 | unsigned int flags; | |
90 | ||
91 | unsigned long bants; | |
92 | }; | |
93 | ||
94 | #define BANLEN 195 | |
95 | struct Ban | |
96 | { | |
97 | char *banstr; | |
98 | char *who; | |
99 | time_t when; | |
100 | char *forward; | |
101 | rb_dlink_node node; | |
102 | }; | |
103 | ||
104 | struct mode_letter | |
105 | { | |
106 | int mode; | |
107 | char letter; | |
108 | }; | |
109 | ||
110 | struct ChModeChange | |
111 | { | |
112 | char letter; | |
113 | const char *arg; | |
114 | const char *id; | |
115 | int dir; | |
116 | int caps; | |
117 | int nocaps; | |
118 | int mems; | |
119 | struct Client *client; | |
120 | }; | |
121 | ||
122 | struct ChCapCombo | |
123 | { | |
124 | int count; | |
125 | int cap_yes; | |
126 | int cap_no; | |
127 | }; | |
128 | ||
129 | typedef void (*ChannelModeFunc)(struct Client *source_p, struct Channel *chptr, | |
130 | int alevel, int parc, int *parn, | |
131 | const char **parv, int *errors, int dir, char c, long mode_type); | |
132 | ||
133 | struct ChannelMode | |
134 | { | |
135 | ChannelModeFunc set_func; | |
136 | long mode_type; | |
137 | }; | |
138 | ||
139 | typedef int (*ExtbanFunc)(const char *data, struct Client *client_p, | |
140 | struct Channel *chptr, long mode_type); | |
141 | ||
142 | /* can_send results */ | |
143 | #define CAN_SEND_NO 0 | |
144 | #define CAN_SEND_NONOP 1 | |
145 | #define CAN_SEND_OPV 2 | |
146 | ||
147 | /* channel status flags */ | |
148 | #define CHFL_PEON 0x0000 /* normal member of channel */ | |
149 | #define CHFL_VOICE 0x0001 /* the power to speak */ | |
150 | #define CHFL_CHANOP 0x0002 /* Channel operator */ | |
151 | ||
152 | #define CHFL_BANNED 0x0008 /* cached as banned */ | |
153 | #define CHFL_QUIETED 0x0010 /* cached as being +q victim */ | |
154 | #define ONLY_SERVERS 0x0020 | |
155 | #define ALL_MEMBERS CHFL_PEON | |
156 | #define ONLY_CHANOPS CHFL_CHANOP | |
157 | #define ONLY_CHANOPSVOICED (CHFL_CHANOP|CHFL_VOICE) | |
158 | ||
159 | #define is_chanop(x) ((x) && (x)->flags & CHFL_CHANOP) | |
160 | #define is_voiced(x) ((x) && (x)->flags & CHFL_VOICE) | |
161 | #define is_chanop_voiced(x) ((x) && (x)->flags & (CHFL_CHANOP|CHFL_VOICE)) | |
162 | #define can_send_banned(x) ((x) && (x)->flags & (CHFL_BANNED|CHFL_QUIETED)) | |
163 | ||
164 | /* channel modes ONLY */ | |
165 | #define MODE_PRIVATE 0x0001 | |
166 | #define MODE_SECRET 0x0002 | |
167 | #define MODE_MODERATED 0x0004 | |
168 | #define MODE_TOPICLIMIT 0x0008 | |
169 | #define MODE_INVITEONLY 0x0010 | |
170 | #define MODE_NOPRIVMSGS 0x0020 | |
171 | #define MODE_REGONLY 0x0040 | |
172 | #define MODE_NOCOLOR 0x0080 | |
173 | #define MODE_EXLIMIT 0x0100 /* exempt from list limits, +b/+e/+I/+q */ | |
174 | #define MODE_PERMANENT 0x0200 /* permanant channel, +P */ | |
175 | #define MODE_OPMODERATE 0x0400 /* send rejected messages to ops */ | |
176 | #define MODE_FREEINVITE 0x0800 /* allow free use of /invite */ | |
177 | #define MODE_FREETARGET 0x1000 /* can be forwarded to without authorization */ | |
178 | #define MODE_DISFORWARD 0x2000 /* disable channel forwarding */ | |
179 | #define MODE_NOCTCP 0x8000 /* Block CTCPs directed to this channel */ | |
180 | ||
181 | #define CHFL_BAN 0x10000000 /* ban channel flag */ | |
182 | #define CHFL_EXCEPTION 0x20000000 /* exception to ban channel flag */ | |
183 | #define CHFL_INVEX 0x40000000 | |
184 | #define CHFL_QUIET 0x80000000 | |
185 | ||
186 | /* mode flags for direction indication */ | |
187 | #define MODE_QUERY 0 | |
188 | #define MODE_ADD 1 | |
189 | #define MODE_DEL -1 | |
190 | ||
191 | #define SecretChannel(x) ((x) && ((x)->mode.mode & MODE_SECRET)) | |
192 | #define HiddenChannel(x) ((x) && ((x)->mode.mode & MODE_PRIVATE)) | |
193 | #define PubChannel(x) ((!x) || ((x)->mode.mode &\ | |
194 | (MODE_PRIVATE | MODE_SECRET)) == 0) | |
195 | ||
196 | /* channel visible */ | |
197 | #define ShowChannel(v,c) (PubChannel(c) || IsMember((v),(c))) | |
198 | ||
199 | #define IsMember(who, chan) ((who && who->user && \ | |
200 | find_channel_membership(chan, who)) ? 1 : 0) | |
201 | ||
202 | #define IsChannelName(name) ((name) && (*(name) == '#' || *(name) == '&')) | |
203 | ||
204 | /* extban function results */ | |
205 | #define EXTBAN_INVALID -1 /* invalid mask, false even if negated */ | |
206 | #define EXTBAN_NOMATCH 0 /* valid mask, no match */ | |
207 | #define EXTBAN_MATCH 1 /* matches */ | |
208 | ||
209 | extern rb_dlink_list global_channel_list; | |
210 | void init_channels(void); | |
211 | ||
212 | struct Channel *allocate_channel(const char *chname); | |
213 | void free_channel(struct Channel *chptr); | |
214 | struct Ban *allocate_ban(const char *, const char *, const char *); | |
215 | void free_ban(struct Ban *bptr); | |
216 | ||
217 | ||
218 | extern void destroy_channel(struct Channel *); | |
219 | ||
220 | extern int can_send(struct Channel *chptr, struct Client *who, | |
221 | struct membership *); | |
222 | extern int flood_attack_channel(int p_or_n, struct Client *source_p, | |
223 | struct Channel *chptr, char *chname); | |
224 | extern int is_banned(struct Channel *chptr, struct Client *who, | |
225 | struct membership *msptr, const char *, const char *, const char **); | |
226 | extern int is_quieted(struct Channel *chptr, struct Client *who, | |
227 | struct membership *msptr, const char *, const char *); | |
228 | extern int can_join(struct Client *source_p, struct Channel *chptr, | |
229 | const char *key, const char **forward); | |
230 | ||
231 | extern struct membership *find_channel_membership(struct Channel *, struct Client *); | |
232 | extern const char *find_channel_status(struct membership *msptr, int combine); | |
233 | extern void add_user_to_channel(struct Channel *, struct Client *, int flags); | |
234 | extern void remove_user_from_channel(struct membership *); | |
235 | extern void remove_user_from_channels(struct Client *); | |
236 | extern void invalidate_bancache_user(struct Client *); | |
237 | ||
238 | extern void free_channel_list(rb_dlink_list *); | |
239 | ||
240 | extern int check_channel_name(const char *name); | |
241 | ||
242 | extern void channel_member_names(struct Channel *chptr, struct Client *, | |
243 | int show_eon); | |
244 | ||
245 | extern void del_invite(struct Channel *chptr, struct Client *who); | |
246 | ||
247 | const char *channel_modes(struct Channel *chptr, struct Client *who); | |
248 | ||
249 | extern struct Channel *find_bannickchange_channel(struct Client *client_p); | |
250 | ||
251 | extern void check_spambot_warning(struct Client *source_p, const char *name); | |
252 | ||
253 | extern void check_splitmode(void *); | |
254 | ||
255 | void set_channel_topic(struct Channel *chptr, const char *topic, | |
256 | const char *topic_info, time_t topicts); | |
257 | ||
258 | extern void init_chcap_usage_counts(void); | |
259 | extern void set_chcap_usage_counts(struct Client *serv_p); | |
260 | extern void unset_chcap_usage_counts(struct Client *serv_p); | |
261 | extern void send_cap_mode_changes(struct Client *client_p, struct Client *source_p, | |
262 | struct Channel *chptr, struct ChModeChange foo[], int); | |
263 | ||
264 | void resv_chan_forcepart(const char *name, const char *reason, int temp_time); | |
265 | ||
266 | extern void set_channel_mode(struct Client *client_p, struct Client *source_p, | |
267 | struct Channel *chptr, struct membership *msptr, int parc, const char *parv[]); | |
268 | extern void set_channel_mlock(struct Client *client_p, struct Client *source_p, | |
269 | struct Channel *chptr, const char *newmlock, int propagate); | |
270 | ||
271 | extern struct ChannelMode chmode_table[256]; | |
272 | ||
273 | extern int add_id(struct Client *source_p, struct Channel *chptr, const char *banid, | |
274 | const char *forward, rb_dlink_list * list, long mode_type); | |
275 | ||
276 | extern struct Ban * del_id(struct Channel *chptr, const char *banid, rb_dlink_list * list, | |
277 | long mode_type); | |
278 | ||
279 | extern ExtbanFunc extban_table[256]; | |
280 | ||
281 | extern int match_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type); | |
282 | extern int valid_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type); | |
283 | const char * get_extban_string(void); | |
284 | ||
285 | extern int get_channel_access(struct Client *source_p, struct membership *msptr); | |
286 | ||
287 | extern void send_channel_join(struct Channel *chptr, struct Client *client_p); | |
288 | ||
289 | #endif /* INCLUDED_channel_h */ |