src/extban.c

   1 /*
   2  *  charybdis: A slightly useful ircd.
   3  *  extban.c: extended ban types ($type:data)
   4  *
   5  * Copyright (C) 2006 charybdis development team
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  20  *  USA
  21  *
  22  */
  23
  24 #include "stdinc.h"
  25 #include "channel.h"
  26 #include "client.h"
  27 #include "common.h"
  28
  29 ExtbanFunc extban_table[256] = { NULL };
  30
  31 int
  32 match_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
  33 {
  34         const char *p;
  35         int invert = 0, result = EXTBAN_INVALID;
  36         ExtbanFunc f;
  37
  38         if (*banstr != '$')
  39                 return 0;
  40         p = banstr + 1;
  41         if (*p == '~')
  42         {
  43                 invert = 1;
  44                 p++;
  45         }
  46         f = extban_table[(unsigned char) ToLower(*p)];
  47         if (*p != '\0')
  48         {
  49                 p++;
  50                 if (*p == ':')
  51                         p++;
  52                 else
  53                         p = NULL;
  54         }
  55         if (f != NULL)
  56                 result = f(p, client_p, chptr, mode_type);
  57         else
  58                 result = EXTBAN_INVALID;
  59
  60         if (invert)
  61                 return result == EXTBAN_NOMATCH;
  62         else
  63                 return result == EXTBAN_MATCH;
  64 }
  65
  66 int
  67 valid_extban(const char *banstr, struct Client *client_p, struct Channel *chptr, long mode_type)
  68 {
  69         const char *p;
  70         int result = EXTBAN_INVALID;
  71         ExtbanFunc f;
  72
  73         if (*banstr != '$')
  74                 return 0;
  75         p = banstr + 1;
  76         if (*p == '~')
  77                 p++;
  78         f = extban_table[(unsigned char) ToLower(*p)];
  79         if (*p != '\0')
  80         {
  81                 p++;
  82                 if (*p == ':')
  83                         p++;
  84                 else
  85                         p = NULL;
  86         }
  87         if (f != NULL)
  88                 result = f(p, client_p, chptr, mode_type);
  89         else
  90                 result = EXTBAN_INVALID;
  91
  92         return result != EXTBAN_INVALID;
  93 }
  94
  95 const char *
  96 get_extban_string(void)
  97 {
  98         static char e[256];
  99         int i, j;
 100
 101         j = 0;
 102         for (i = 1; i < 256; i++)
 103                 if (i == ToLower(i) && extban_table[i])
 104                         e[j++] = i;
 105         e[j] = 0;
 106         return e;
 107 }