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 1389 2006-05-20 19:19:00Z nenolod $
  23  */
  24
  25 #include "stdinc.h"
  26 #include "channel.h"
  27 #include "client.h"
  28 #include "common.h"
  29
  30 ExtbanFunc extban_table[256] = { NULL };
  31
  32 int
  33 match_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
  34 {
  35         const char *p;
  36         int invert = 0, result = EXTBAN_INVALID;
  37         ExtbanFunc f;
  38
  39         if (*banstr != '$')
  40                 return 0;
  41         p = banstr + 1;
  42         if (*p == '~')
  43         {
  44                 invert = 1;
  45                 p++;
  46         }
  47         f = extban_table[(unsigned char) ToLower(*p)];
  48         if (*p != '\0')
  49         {
  50                 p++;
  51                 if (*p == ':')
  52                         p++;
  53                 else
  54                         p = NULL;
  55         }
  56         if (f != NULL)
  57                 result = f(p, client_p, chptr, mode_type);
  58         else
  59                 result = EXTBAN_INVALID;
  60
  61         if (invert)
  62                 return result == EXTBAN_NOMATCH;
  63         else
  64                 return result == EXTBAN_MATCH;
  65 }
  66
  67 int
  68 valid_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
  69 {
  70         const char *p;
  71         int result = EXTBAN_INVALID;
  72         ExtbanFunc f;
  73
  74         if (*banstr != '$')
  75                 return 0;
  76         p = banstr + 1;
  77         if (*p == '~')
  78                 p++;
  79         f = extban_table[(unsigned char) ToLower(*p)];
  80         if (*p != '\0')
  81         {
  82                 p++;
  83                 if (*p == ':')
  84                         p++;
  85                 else
  86                         p = NULL;
  87         }
  88         if (f != NULL)
  89                 result = f(p, client_p, chptr, mode_type);
  90         else
  91                 result = EXTBAN_INVALID;
  92
  93         return result != EXTBAN_INVALID;
  94 }
  95
  96 const char *
  97 get_extban_string(void)
  98 {
  99         static char e[256];
 100         int i, j;
 101
 102         j = 0;
 103         for (i = 1; i < 256; i++)
 104                 if (i == ToLower(i) && extban_table[i])
 105                         e[j++] = i;
 106         e[j] = 0;
 107         return e;
 108 }