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212380e3 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 *
212380e3 24 */
25
26#ifndef INCLUDED_channel_h
27#define INCLUDED_channel_h
212380e3 28
29#define MODEBUFLEN 200
30
31/* Maximum mode changes allowed per client, per server is different */
32#define MAXMODEPARAMS 4
33#define MAXMODEPARAMSSERV 10
34
35struct Client;
36
37/* mode structure for channels */
38struct Mode
39{
40 unsigned int mode;
34f6a40e 41 unsigned int off_mode;
212380e3 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 */
50struct Channel
51{
08d11e34 52 rb_dlink_node node;
212380e3 53 struct Mode mode;
dc45456c 54 struct Mode mode_lock;
212380e3 55 char *topic;
56 char *topic_info;
57 time_t topic_time;
212380e3 58 time_t last_knock; /* don't allow knock to flood */
59
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60 rb_dlink_list members; /* channel members */
61 rb_dlink_list locmembers; /* local channel members */
212380e3 62
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WP
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;
212380e3 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
0b370fcc 76 struct Dictionary *metadata;
6f659342 77
212380e3 78 unsigned long bants;
79 time_t channelts;
80 char *chname;
81};
82
83struct membership
84{
08d11e34
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85 rb_dlink_node channode;
86 rb_dlink_node locchannode;
87 rb_dlink_node usernode;
212380e3 88
89 struct Channel *chptr;
90 struct Client *client_p;
91 unsigned int flags;
92
93 unsigned long bants;
94};
95
83294285 96#define BANLEN 195
212380e3 97struct Ban
98{
99 char *banstr;
100 char *who;
101 time_t when;
08d11e34 102 rb_dlink_node node;
212380e3 103};
104
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105struct mode_letter
106{
107 int mode;
108 char letter;
109};
110
212380e3 111struct ChModeChange
112{
113 char letter;
114 const char *arg;
115 const char *id;
116 int dir;
117 int caps;
118 int nocaps;
119 int mems;
eccd1c58 120 int override;
212380e3 121 struct Client *client;
122};
123
124struct ChCapCombo
125{
126 int count;
127 int cap_yes;
128 int cap_no;
129};
130
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131typedef void (*ChannelModeFunc)(struct Client *source_p, struct Channel *chptr,
132 int alevel, int parc, int *parn,
133 const char **parv, int *errors, int dir, char c, long mode_type);
134
212380e3 135struct ChannelMode
136{
6795400d 137 ChannelModeFunc set_func;
212380e3 138 long mode_type;
139};
140
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141/* modes added by the module files in modes/ */
142struct module_modes
143{
144 unsigned int MODE_REGONLY;
145 unsigned int MODE_NOCTCP; /* Block CTCPs directed to this channel */
146 unsigned int MODE_NOCOLOR;
147 unsigned int MODE_EXLIMIT; /* exempt from list limits, +b/+e/+I/+q */
148 unsigned int MODE_PERMANENT; /* permanant channel, +P */
149 unsigned int MODE_OPMODERATE; /* send rejected messages to ops */
150 unsigned int MODE_FREEINVITE; /* allow free use of /invite */
151 unsigned int MODE_FREETARGET; /* can be forwarded to without authorization */
152 unsigned int MODE_DISFORWARD; /* disable channel forwarding */
153 unsigned int MODE_THROTTLE; /* throttle joins */
154 unsigned int MODE_FORWARD;
155 unsigned int MODE_NONOTICE; /* Block notices directed to this channel */
156 unsigned int MODE_NOACTION; /* Block CTCP ACTION directed to this channel */
157 unsigned int MODE_NOKICK; /* Disable /kick on this channel */
158 unsigned int MODE_NONICK; /* Disable /nick for anyone on this channel */
159 unsigned int MODE_NOCAPS; /* Block messages in all capital letters */
160 unsigned int MODE_NOREJOIN; /* Block rejoin immediately after kick */
161 unsigned int MODE_NOREPEAT; /* Block repeat messages */
162 unsigned int MODE_NOOPERKICK; /* disallow kicking opers */
163
164 unsigned int CHFL_QUIET;
165};
166
212380e3 167typedef int (*ExtbanFunc)(const char *data, struct Client *client_p,
168 struct Channel *chptr, long mode_type);
169
170/* can_send results */
171#define CAN_SEND_NO 0
172#define CAN_SEND_NONOP 1
173#define CAN_SEND_OPV 2
174
175/* channel status flags */
176#define CHFL_PEON 0x0000 /* normal member of channel */
177#define CHFL_CHANOP 0x0001 /* Channel operator */
178#define CHFL_VOICE 0x0002 /* the power to speak */
212380e3 179#define CHFL_BANNED 0x0008 /* cached as banned */
180#define CHFL_QUIETED 0x0010 /* cached as being +q victim */
181#define ONLY_SERVERS 0x0020
82f8e812 182#define CHFL_HALFOP 0x0040
c1c91f94 183#define CHFL_ADMIN 0x0080
1cdd8fdf 184#define ONLY_OPERS 0x0100
212380e3 185#define ALL_MEMBERS CHFL_PEON
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186#define ONLY_CHANOPS (CHFL_ADMIN|CHFL_CHANOP|CHFL_HALFOP)
187#define ONLY_CHANOPSVOICED (CHFL_ADMIN|CHFL_CHANOP|CHFL_HALFOP|CHFL_VOICE)
212380e3 188
82f8e812 189#define is_chmode_h(x) ((x) && (x)->flags & CHFL_HALFOP) /* does not check if halfop is enabled, should typically not be used */
c1c91f94 190#define is_chmode_a(x) ((x) && (x)->flags & CHFL_ADMIN) /* does not check if admin is enabled, should typically not be used */
212380e3 191#define is_chanop(x) ((x) && (x)->flags & CHFL_CHANOP)
192#define is_voiced(x) ((x) && (x)->flags & CHFL_VOICE)
212380e3 193#define can_send_banned(x) ((x) && (x)->flags & (CHFL_BANNED|CHFL_QUIETED))
194
195/* channel modes ONLY */
196#define MODE_PRIVATE 0x0001
197#define MODE_SECRET 0x0002
198#define MODE_MODERATED 0x0004
199#define MODE_TOPICLIMIT 0x0008
200#define MODE_INVITEONLY 0x0010
201#define MODE_NOPRIVMSGS 0x0020
212380e3 202
203#define CHFL_BAN 0x10000000 /* ban channel flag */
204#define CHFL_EXCEPTION 0x20000000 /* exception to ban channel flag */
205#define CHFL_INVEX 0x40000000
212380e3 206
207/* mode flags for direction indication */
208#define MODE_QUERY 0
209#define MODE_ADD 1
210#define MODE_DEL -1
211
212#define SecretChannel(x) ((x) && ((x)->mode.mode & MODE_SECRET))
213#define HiddenChannel(x) ((x) && ((x)->mode.mode & MODE_PRIVATE))
214#define PubChannel(x) ((!x) || ((x)->mode.mode &\
215 (MODE_PRIVATE | MODE_SECRET)) == 0)
216
217/* channel visible */
218#define ShowChannel(v,c) (PubChannel(c) || IsMember((v),(c)))
219
220#define IsMember(who, chan) ((who && who->user && \
221 find_channel_membership(chan, who)) ? 1 : 0)
222
223#define IsChannelName(name) ((name) && (*(name) == '#' || *(name) == '&'))
224
225/* extban function results */
226#define EXTBAN_INVALID -1 /* invalid mask, false even if negated */
227#define EXTBAN_NOMATCH 0 /* valid mask, no match */
228#define EXTBAN_MATCH 1 /* matches */
229
08d11e34 230extern rb_dlink_list global_channel_list;
212380e3 231void init_channels(void);
1fe75e33 232void init_module_modes(void);
212380e3 233
234struct Channel *allocate_channel(const char *chname);
235void free_channel(struct Channel *chptr);
236struct Ban *allocate_ban(const char *, const char *);
237void free_ban(struct Ban *bptr);
238
239
240extern void destroy_channel(struct Channel *);
241
242extern int can_send(struct Channel *chptr, struct Client *who,
243 struct membership *);
244extern int is_banned(struct Channel *chptr, struct Client *who,
245 struct membership *msptr, const char *, const char *);
246extern int is_quieted(struct Channel *chptr, struct Client *who,
247 struct membership *msptr, const char *, const char *);
248extern int can_join(struct Client *source_p, struct Channel *chptr, char *key);
249
250extern struct membership *find_channel_membership(struct Channel *, struct Client *);
251extern const char *find_channel_status(struct membership *msptr, int combine);
40c6b59b 252extern int is_halfop(struct membership *msptr);
c1c91f94 253extern int is_admin(struct membership *msptr);
d1c7eccf 254extern int is_any_op(struct membership *msptr);
bbc69733 255extern int is_chanop_voiced(struct membership *msptr);
b3b2ed97 256extern int can_kick_deop(struct membership *source, struct membership *target);
212380e3 257extern void add_user_to_channel(struct Channel *, struct Client *, int flags);
258extern void remove_user_from_channel(struct membership *);
259extern void remove_user_from_channels(struct Client *);
260extern void invalidate_bancache_user(struct Client *);
261
08d11e34 262extern void free_channel_list(rb_dlink_list *);
212380e3 263
264extern int check_channel_name(const char *name);
265
266extern void channel_member_names(struct Channel *chptr, struct Client *,
267 int show_eon);
268
269extern void del_invite(struct Channel *chptr, struct Client *who);
270
ea84bfde 271const char *channel_modes(struct Channel *chptr, struct Client *who);
212380e3 272
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273extern int has_common_channel(struct Client *client1, struct Client *client2);
274
212380e3 275extern struct Channel *find_bannickchange_channel(struct Client *client_p);
276
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G
277extern struct Channel *find_nonickchange_channel(struct Client *client_p);
278
212380e3 279extern void check_spambot_warning(struct Client *source_p, const char *name);
280
281extern void check_splitmode(void *);
282
283void set_channel_topic(struct Channel *chptr, const char *topic,
284 const char *topic_info, time_t topicts);
285
286extern void init_chcap_usage_counts(void);
287extern void set_chcap_usage_counts(struct Client *serv_p);
288extern void unset_chcap_usage_counts(struct Client *serv_p);
289extern void send_cap_mode_changes(struct Client *client_p, struct Client *source_p,
290 struct Channel *chptr, struct ChModeChange foo[], int);
291
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292void resv_chan_forcepart(const char *name, const char *reason, int temp_time);
293
212380e3 294extern void set_channel_mode(struct Client *client_p, struct Client *source_p,
295 struct Channel *chptr, struct membership *msptr, int parc, const char *parv[]);
296
297extern struct ChannelMode chmode_table[256];
298
299extern int add_id(struct Client *source_p, struct Channel *chptr, const char *banid,
08d11e34 300 rb_dlink_list * list, long mode_type);
212380e3 301
08d11e34 302extern int del_id(struct Channel *chptr, const char *banid, rb_dlink_list * list, long mode_type);
212380e3 303
304extern ExtbanFunc extban_table[256];
305
306extern int match_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type);
307extern int valid_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type);
308const char * get_extban_string(void);
309
67b90240 310extern struct Channel * check_forward(struct Client *source_p, struct Channel *chptr, char *key);
677e21a4 311extern void user_join(struct Client * client_p, struct Client * source_p, const char * channels, const char * keys);
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312extern void do_join_0(struct Client *client_p, struct Client *source_p);
313extern int check_channel_name_loc(struct Client *source_p, const char *name);
212380e3 314
104becbf 315extern struct Metadata *channel_metadata_add(struct Channel *target, const char *name, const char *value, int propegate);
6a97cac6 316extern struct Metadata *channel_metadata_time_add(struct Channel *target, const char *name, time_t timevalue, const char *value);
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317extern void channel_metadata_delete(struct Channel *target, const char *name, int propegate);
318extern struct Metadata *channel_metadata_find(struct Channel *target, const char *name);
8bced6dc 319extern void channel_metadata_clear(struct Channel *target);
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320
321
212380e3 322#endif /* INCLUDED_channel_h */