+<?php
+/*
+ * brisk - Obj/ipclass.phh
+ *
+ * Copyright (C) 2015 Matteo Nastasi
+ * mailto: nastasi@alternativeoutput.it
+ * matteo.nastasi@milug.org
+ * web: http://www.alternativeoutput.it
+ *
+ * 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 of the License, 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
+ * MERCHANTABLILITY 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, 59 Temple Place -
+ * Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+class IPClassItem {
+ var $addr;
+ var $mask;
+
+ function IPClassItem($ipset)
+ {
+ //split
+ $elem = split("/", $ipset, 2);
+ $addr = $elem[0];
+ $mask = (int)$elem[1];
+
+ //convert mask
+
+ $this->mask = ((1<<($mask))-1) << (32 - $mask);
+ $this->addr = ip2long($addr) & $this->mask;
+
+ fprintf(STDERR, "New ipclass item: %x (%x)\n", $this->addr, $this->mask);
+ }
+
+ function match($ip)
+ {
+ // fprintf(STDERR, "IP: %x, ADDR: %x, MASK: %x -> (%d)\n",
+ // $ip, $this->addr, $this->mask, ((ip2long($ip) & $this->mask) == $this->addr));
+ return (($ip & $this->mask) == $this->addr);
+ }
+}
+
+class IPClass {
+ var $ipcl;
+
+ function IPClass()
+ {
+ $this->ipcl = NULL;
+ }
+
+ static function create($ip_in=NULL)
+ {
+ $thiz = new IPClass();
+
+ if ($ip_in != NULL)
+ $thiz->update($ip_in);
+
+ return ($thiz);
+ }
+
+
+ function update($ip_in)
+ {
+ $this->clean();
+
+ $this->ipcl = array();
+ for ($i = 0 ; $i < count($ip_in) ; $i++) {
+ $this->ipcl[$i] = new IPClassItem($ip_in[$i]);
+ }
+ }
+
+ function clean()
+ {
+ if ($this->ipcl != NULL) {
+ $ct = count($this->ipcl);
+ for ($i = 0 ; $i < $ct ; $i++) {
+ unset($this->ipcl[$i]);
+ }
+ $this->ipcl = NULL;
+ }
+ }
+
+ function check($ip_str)
+ {
+ $ip = ip2long($ip_str);
+
+ for ($i = 0 ; $i < count($this->ipcl) ; $i++) {
+ if ($this->ipcl[$i]->match($ip)) {
+ fprintf(STDERR, "ban_list[%d] = %x (%x) MATCH\n", $i,
+ $this->ipcl[$i]->addr, $this->ipcl[$i]->mask);
+ return(TRUE);
+ }
+ }
+ return (FALSE);
+ }
+}
+?>
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