ircd/extban.c

   1 /*
   2  *  charybdis: A slightly useful ircd.
   3  *  extban.c: extended ban types ($type:data)
   4  *
   5  * Copyright (C) 2006 charybdis development team
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  20  *  USA
  21  */
  22
  23 #include "stdinc.h"
  24 #include "channel.h"
  25 #include "client.h"
  26
  27 ExtbanFunc extban_table[256] = { NULL };
  28
  29 int
  30 match_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
  31 {
  32         const char *p;
  33         int invert = 0, result = EXTBAN_INVALID;
  34         ExtbanFunc f;
  35
  36         if (*banstr != '$')
  37                 return 0;
  38         p = banstr + 1;
  39         if (*p == '~')
  40         {
  41                 invert = 1;
  42                 p++;
  43         }
  44         f = extban_table[(unsigned char) irctolower(*p)];
  45         if (*p != '\0')
  46         {
  47                 p++;
  48                 if (*p == ':')
  49                         p++;
  50                 else
  51                         p = NULL;
  52         }
  53         if (f != NULL)
  54                 result = f(p, client_p, chptr, mode_type);
  55         else
  56                 result = EXTBAN_INVALID;
  57
  58         if (invert)
  59                 return result == EXTBAN_NOMATCH;
  60         else
  61                 return result == EXTBAN_MATCH;
  62 }
  63
  64 int
  65 valid_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
  66 {
  67         const char *p;
  68         int result = EXTBAN_INVALID;
  69         ExtbanFunc f;
  70
  71         if (*banstr != '$')
  72                 return 0;
  73         p = banstr + 1;
  74         if (*p == '~')
  75                 p++;
  76         f = extban_table[(unsigned char) irctolower(*p)];
  77         if (*p != '\0')
  78         {
  79                 p++;
  80                 if (*p == ':')
  81                         p++;
  82                 else
  83                         p = NULL;
  84         }
  85         if (f != NULL)
  86                 result = f(p, client_p, chptr, mode_type);
  87         else
  88                 result = EXTBAN_INVALID;
  89
  90         return result != EXTBAN_INVALID;
  91 }
  92
  93 const char *
  94 get_extban_string(void)
  95 {
  96         static char e[256];
  97         int i, j;
  98
  99         j = 0;
 100         for (i = 1; i < 256; i++)
 101                 if (i == irctolower(i) && extban_table[i])
 102                         e[j++] = i;
 103         e[j] = 0;
 104         return e;
 105 }