include/channel.h

   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  */
  25
  26 #ifndef INCLUDED_channel_h
  27 #define INCLUDED_channel_h
  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
  35 struct Client;
  36
  37 /* mode structure for channels */
  38 struct Mode
  39 {
  40         unsigned int mode;
  41         int limit;
  42         char key[KEYLEN];
  43         unsigned int join_num;
  44         unsigned int join_time;
  45         char forward[LOC_CHANNELLEN + 1];
  46 };
  47
  48 /* channel structure */
  49 struct Channel
  50 {
  51         rb_dlink_node node;
  52         struct Mode mode;
  53         char *mode_lock;
  54         char *topic;
  55         char *topic_info;
  56         time_t topic_time;
  57         time_t last_knock;      /* don't allow knock to flood */
  58
  59         rb_dlink_list members;  /* channel members */
  60         rb_dlink_list locmembers;       /* local channel members */
  61
  62         rb_dlink_list invites;
  63         rb_dlink_list banlist;
  64         rb_dlink_list exceptlist;
  65         rb_dlink_list invexlist;
  66         rb_dlink_list quietlist;
  67
  68         time_t first_received_message_time;     /* channel flood control */
  69         int received_number_of_privmsgs;
  70         int flood_noticed;
  71
  72         unsigned int join_count;  /* joins within delta */
  73         unsigned int join_delta;  /* last ts of join */
  74
  75         struct Dictionary *metadata;
  76
  77         unsigned long bants;
  78         time_t channelts;
  79         char *chname;
  80 };
  81
  82 struct membership
  83 {
  84         rb_dlink_node channode;
  85         rb_dlink_node locchannode;
  86         rb_dlink_node usernode;
  87
  88         struct Channel *chptr;
  89         struct Client *client_p;
  90         unsigned int flags;
  91
  92         unsigned long bants;
  93 };
  94
  95 #define BANLEN 195
  96 struct Ban
  97 {
  98         char *banstr;
  99         char *who;
 100         time_t when;
 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         int override;
 120         struct Client *client;
 121 };
 122
 123 struct ChCapCombo
 124 {
 125         int count;
 126         int cap_yes;
 127         int cap_no;
 128 };
 129
 130 typedef void (*ChannelModeFunc)(struct Client *source_p, struct Channel *chptr,
 131                 int alevel, int parc, int *parn,
 132                 const char **parv, int *errors, int dir, char c, long mode_type);
 133
 134 struct ChannelMode
 135 {
 136         ChannelModeFunc set_func;
 137         long mode_type;
 138 };
 139
 140 typedef int (*ExtbanFunc)(const char *data, struct Client *client_p,
 141                 struct Channel *chptr, long mode_type);
 142
 143 /* can_send results */
 144 #define CAN_SEND_NO     0
 145 #define CAN_SEND_NONOP  1
 146 #define CAN_SEND_OPV    2
 147
 148 /* channel status flags */
 149 #define CHFL_PEON               0x0000  /* normal member of channel */
 150 #define CHFL_CHANOP             0x0001  /* Channel operator */
 151 #define CHFL_VOICE              0x0002  /* the power to speak */
 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 CHFL_HALFOP             0x0040
 156 #define CHFL_ADMIN              0x0080
 157 #define ONLY_OPERS              0x0100
 158 #define ALL_MEMBERS             CHFL_PEON
 159 #define ONLY_CHANOPS            (CHFL_ADMIN|CHFL_CHANOP|CHFL_HALFOP)
 160 #define ONLY_CHANOPSVOICED      (CHFL_ADMIN|CHFL_CHANOP|CHFL_HALFOP|CHFL_VOICE)
 161
 162 #define is_chmode_h(x)  ((x) && (x)->flags & CHFL_HALFOP) /* does not check if halfop is enabled, should typically not be used */
 163 #define is_chmode_a(x)  ((x) && (x)->flags & CHFL_ADMIN) /* does not check if admin is enabled, should typically not be used */
 164 #define is_chanop(x)    ((x) && (x)->flags & CHFL_CHANOP)
 165 #define is_voiced(x)    ((x) && (x)->flags & CHFL_VOICE)
 166 #define can_send_banned(x) ((x) && (x)->flags & (CHFL_BANNED|CHFL_QUIETED))
 167
 168 /* channel modes ONLY */
 169 #define MODE_PRIVATE    0x0001
 170 #define MODE_SECRET     0x0002
 171 #define MODE_MODERATED  0x0004
 172 #define MODE_TOPICLIMIT 0x0008
 173 #define MODE_INVITEONLY 0x0010
 174 #define MODE_NOPRIVMSGS 0x0020
 175 #define MODE_REGONLY    0x0040
 176 #define MODE_NOCOLOR    0x0080
 177 #define MODE_EXLIMIT    0x0100  /* exempt from list limits, +b/+e/+I/+q */
 178 #define MODE_PERMANENT  0x0200  /* permanant channel, +P */
 179 #define MODE_OPMODERATE 0x0400  /* send rejected messages to ops */
 180 #define MODE_FREEINVITE 0x0800  /* allow free use of /invite */
 181 #define MODE_FREETARGET 0x1000  /* can be forwarded to without authorization */
 182 #define MODE_DISFORWARD 0x2000  /* disable channel forwarding */
 183 #define MODE_NOCTCP     0x8000  /* Block CTCPs directed to this channel */
 184 #define MODE_NONOTICE   0x10000 /* Block notices directed to this channel */
 185 #define MODE_NOACTION   0x20000 /* Block CTCP ACTION directed to this channel */
 186 #define MODE_NOKICK     0x40000 /* Disable /kick on this channel */
 187 #define MODE_NONICK     0x80000 /* Disable /nick for anyone on this channel */
 188 #define MODE_NOCAPS     0x100000 /* Block messages in all capital letters */
 189 #define MODE_NOREJOIN   0x200000 /* Block rejoin immediately after kick */
 190 #define MODE_NOREPEAT   0x400000 /* Block repeat messages */
 191 #define MODE_NOOPERKICK 0x800000 /* disallow kicking opers */
 192
 193 #define CHFL_BAN        0x10000000      /* ban channel flag */
 194 #define CHFL_EXCEPTION  0x20000000      /* exception to ban channel flag */
 195 #define CHFL_INVEX      0x40000000
 196 #define CHFL_QUIET      0x80000000
 197
 198 /* mode flags for direction indication */
 199 #define MODE_QUERY     0
 200 #define MODE_ADD       1
 201 #define MODE_DEL       -1
 202
 203 #define SecretChannel(x)        ((x) && ((x)->mode.mode & MODE_SECRET))
 204 #define HiddenChannel(x)        ((x) && ((x)->mode.mode & MODE_PRIVATE))
 205 #define PubChannel(x)           ((!x) || ((x)->mode.mode &\
 206                                  (MODE_PRIVATE | MODE_SECRET)) == 0)
 207
 208 /* channel visible */
 209 #define ShowChannel(v,c)        (PubChannel(c) || IsMember((v),(c)))
 210
 211 #define IsMember(who, chan) ((who && who->user && \
 212                 find_channel_membership(chan, who)) ? 1 : 0)
 213
 214 #define IsChannelName(name) ((name) && (*(name) == '#' || *(name) == '&'))
 215
 216 /* extban function results */
 217 #define EXTBAN_INVALID -1  /* invalid mask, false even if negated */
 218 #define EXTBAN_NOMATCH  0  /* valid mask, no match */
 219 #define EXTBAN_MATCH    1  /* matches */
 220
 221 extern rb_dlink_list global_channel_list;
 222 void init_channels(void);
 223
 224 struct Channel *allocate_channel(const char *chname);
 225 void free_channel(struct Channel *chptr);
 226 struct Ban *allocate_ban(const char *, const char *);
 227 void free_ban(struct Ban *bptr);
 228
 229
 230 extern void destroy_channel(struct Channel *);
 231
 232 extern int can_send(struct Channel *chptr, struct Client *who,
 233                     struct membership *);
 234 extern int is_banned(struct Channel *chptr, struct Client *who,
 235                      struct membership *msptr, const char *, const char *);
 236 extern int is_quieted(struct Channel *chptr, struct Client *who,
 237                      struct membership *msptr, const char *, const char *);
 238 extern int can_join(struct Client *source_p, struct Channel *chptr, char *key);
 239
 240 extern struct membership *find_channel_membership(struct Channel *, struct Client *);
 241 extern const char *find_channel_status(struct membership *msptr, int combine);
 242 extern int is_halfop(struct membership *msptr);
 243 extern int is_admin(struct membership *msptr);
 244 extern int is_any_op(struct membership *msptr);
 245 extern int is_chanop_voiced(struct membership *msptr);
 246 extern int can_kick_deop(struct membership *source, struct membership *target);
 247 extern void add_user_to_channel(struct Channel *, struct Client *, int flags);
 248 extern void remove_user_from_channel(struct membership *);
 249 extern void remove_user_from_channels(struct Client *);
 250 extern void invalidate_bancache_user(struct Client *);
 251
 252 extern void free_channel_list(rb_dlink_list *);
 253
 254 extern int check_channel_name(const char *name);
 255
 256 extern void channel_member_names(struct Channel *chptr, struct Client *,
 257                                  int show_eon);
 258
 259 extern void del_invite(struct Channel *chptr, struct Client *who);
 260
 261 const char *channel_modes(struct Channel *chptr, struct Client *who);
 262
 263 extern int has_common_channel(struct Client *client1, struct Client *client2);
 264
 265 extern struct Channel *find_bannickchange_channel(struct Client *client_p);
 266
 267 extern struct Channel *find_nonickchange_channel(struct Client *client_p);
 268
 269 extern void check_spambot_warning(struct Client *source_p, const char *name);
 270
 271 extern void check_splitmode(void *);
 272
 273 void set_channel_topic(struct Channel *chptr, const char *topic,
 274                        const char *topic_info, time_t topicts);
 275
 276 extern void init_chcap_usage_counts(void);
 277 extern void set_chcap_usage_counts(struct Client *serv_p);
 278 extern void unset_chcap_usage_counts(struct Client *serv_p);
 279 extern void send_cap_mode_changes(struct Client *client_p, struct Client *source_p,
 280                                   struct Channel *chptr, struct ChModeChange foo[], int);
 281
 282 void resv_chan_forcepart(const char *name, const char *reason, int temp_time);
 283
 284 extern void set_channel_mode(struct Client *client_p, struct Client *source_p,
 285                 struct Channel *chptr, struct membership *msptr, int parc, const char *parv[]);
 286 extern void set_channel_mlock(struct Client *client_p, struct Client *source_p,
 287                 struct Channel *chptr, const char *newmlock, int propagate);
 288
 289 extern struct ChannelMode chmode_table[256];
 290
 291 extern int add_id(struct Client *source_p, struct Channel *chptr, const char *banid,
 292        rb_dlink_list * list, long mode_type);
 293
 294 extern int del_id(struct Channel *chptr, const char *banid, rb_dlink_list * list, long mode_type);
 295
 296 extern ExtbanFunc extban_table[256];
 297
 298 extern int match_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type);
 299 extern int valid_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type);
 300 const char * get_extban_string(void);
 301
 302 extern struct Channel * check_forward(struct Client *source_p, struct Channel *chptr, char *key);
 303 extern void user_join(struct Client * client_p, struct Client * source_p, const char * channels, const char * keys);
 304 extern void do_join_0(struct Client *client_p, struct Client *source_p);
 305 extern int check_channel_name_loc(struct Client *source_p, const char *name);
 306
 307 extern struct Metadata *channel_metadata_add(struct Channel *target, const char *name, const char *value, int propegate);
 308 extern struct Metadata *channel_metadata_time_add(struct Channel *target, const char *name, time_t timevalue, const char *value);
 309 extern void channel_metadata_delete(struct Channel *target, const char *name, int propegate);
 310 extern struct Metadata *channel_metadata_find(struct Channel *target, const char *name);
 311 extern void channel_metadata_clear(struct Channel *target);
 312
 313
 314 #endif /* INCLUDED_channel_h */