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