src/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  *  $Id: extban.c 26 2006-09-20 18:02:06Z spb $
  23  */
  24
  25 #include "stdinc.h"
  26 #include "tools.h"
  27 #include "channel.h"
  28 #include "client.h"
  29 #include "common.h"
  30
  31 ExtbanFunc extban_table[256] = { NULL };
  32
  33 int
  34 match_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
  35 {
  36         const char *p;
  37         int invert = 0, result = EXTBAN_INVALID;
  38         ExtbanFunc f;
  39
  40         if (*banstr != '$')
  41                 return 0;
  42         p = banstr + 1;
  43         if (*p == '~')
  44         {
  45                 invert = 1;
  46                 p++;
  47         }
  48         f = extban_table[(unsigned char) ToLower(*p)];
  49         if (*p != '\0')
  50         {
  51                 p++;
  52                 if (*p == ':')
  53                         p++;
  54                 else
  55                         p = NULL;
  56         }
  57         if (f != NULL)
  58                 result = f(p, client_p, chptr, mode_type);
  59         else
  60                 result = EXTBAN_INVALID;
  61
  62         if (invert)
  63                 return result == EXTBAN_NOMATCH;
  64         else
  65                 return result == EXTBAN_MATCH;
  66 }
  67
  68 int
  69 valid_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
  70 {
  71         const char *p;
  72         int invert = 0, result = EXTBAN_INVALID;
  73         ExtbanFunc f;
  74
  75         if (*banstr != '$')
  76                 return 0;
  77         p = banstr + 1;
  78         if (*p == '~')
  79         {
  80                 invert = 1;
  81                 p++;
  82         }
  83         f = extban_table[(unsigned char) ToLower(*p)];
  84         if (*p != '\0')
  85         {
  86                 p++;
  87                 if (*p == ':')
  88                         p++;
  89                 else
  90                         p = NULL;
  91         }
  92         if (f != NULL)
  93                 result = f(p, client_p, chptr, mode_type);
  94         else
  95                 result = EXTBAN_INVALID;
  96
  97         return result != EXTBAN_INVALID;
  98 }
  99
 100 const char *
 101 get_extban_string(void)
 102 {
 103         static char e[256];
 104         int i, j;
 105
 106         j = 0;
 107         for (i = 1; i < 256; i++)
 108                 if (i == ToLower(i) && extban_table[i])
 109                         e[j++] = i;
 110         e[j] = 0;
 111         return e;
 112 }