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/* Implementation of match_cidr call
Copyright (C) 2007 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 2, 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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301 USA */
#include_once <status.mfh>
#pragma regex push +extended
func match_cidr(string ipstr, string cidr) returns number
do
number netmask
if %cidr matches '^(([0-9]{1,3}\.){3}[0-9]{1,3})/([0-9][0-9]?)'
return inet_aton(%ipstr) & len_to_netmask(\3) = inet_aton(\1)
else
throw invcidr "invalid CIDR (%cidr)"
fi
return 0
done
#pragma regex pop
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