extensions/extb_canjoin.c

   1 /*
   2  * Canjoin extban type: matches users who are or are not banned from a
   3  * specified channel.
   4  *    -- nenolod/jilles
   5  *
   6  */
   7
   8 #include "stdinc.h"
   9 #include "modules.h"
  10 #include "client.h"
  11 #include "channel.h"
  12 #include "hash.h"
  13 #include "ircd.h"
  14
  15 static int _modinit(void);
  16 static void _moddeinit(void);
  17 static int eb_canjoin(const char *data, struct Client *client_p, struct Channel *chptr, long mode_type);
  18
  19 DECLARE_MODULE_AV1(extb_canjoin, _modinit, _moddeinit, NULL, NULL, NULL, "$Revision: 1841 $");
  20
  21 static int
  22 _modinit(void)
  23 {
  24         extban_table['j'] = eb_canjoin;
  25
  26         return 0;
  27 }
  28
  29 static void
  30 _moddeinit(void)
  31 {
  32         extban_table['j'] = NULL;
  33 }
  34
  35 static int eb_canjoin(const char *data, struct Client *client_p,
  36                 struct Channel *chptr, long mode_type)
  37 {
  38         struct Channel *chptr2;
  39         int ret;
  40         static int recurse = 0;
  41
  42         (void)mode_type;
  43         /* don't process a $j in a $j'ed list */
  44         if (recurse)
  45                 return EXTBAN_INVALID;
  46         if (data == NULL)
  47                 return EXTBAN_INVALID;
  48         chptr2 = find_channel(data);
  49         /* must exist, and no point doing this with the same channel */
  50         if (chptr2 == NULL || chptr2 == chptr)
  51                 return EXTBAN_INVALID;
  52         /* require consistent target */
  53         if (chptr->chname[0] == '#' && data[0] == '&')
  54                 return EXTBAN_INVALID;
  55         /* this allows getting some information about ban exceptions
  56          * but +s/+p doesn't seem the right criterion */
  57 #if 0
  58         /* privacy! don't allow +s/+p channels to influence another channel */
  59         if (!PubChannel(chptr2))
  60                 return EXTBAN_INVALID;
  61 #endif
  62         recurse = 1;
  63         ret = is_banned(chptr2, client_p, NULL, NULL, NULL) == CHFL_BAN ? EXTBAN_MATCH : EXTBAN_NOMATCH;
  64         recurse = 0;
  65         return ret;
  66 }