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/* DNSBL checker.
Copyright (C) 2006, 2007 Jan Rafaj
Copyright (C) 2008 Sergey Poznyakoff
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#require dns
#require match_cidr
#pragma regex push +extended
func match_dnsbl(string address, string zone, string iprange)
returns number
do
if %iprange = 'ANY'
set iprange '127.0.0.0/8'
m4_ifdef(`COMPAT_4_3',`
else
if not %iprange matches `'''`^([0-9]{1,3}\.){3}[0-9]{1,3}/[0-9]{1,2}$`'''`
return 0
fi
fi
if not (%address matches `'''`^([0-9]{1,3}\.){3}[0-9]{1,3}$`'''`
and %address != %iprange)
return 0')
fi
if %address matches
'^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$'
if match_cidr (resolve ("\4.\3.\2.\1", %zone), %iprange)
return 1
else
return 0
fi
fi
# never reached
done
#pragma regex pop
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