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/* IP validity checker.
Copyright (C) 2006, 2007 Jan Rafaj
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/>. */
#pragma regex push +extended
func is_ip(string ip) returns number
do
return %ip matches '^([0-9]{1,3}\.){3}[0-9]{1,3}$'
done
#pragma regex pop
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