pfSense

<?php

/*

 *

 * part of pfSense (https://www.pfsense.org)

 * All rights reserved.

 *

 * originally part of m0n0wall (http://m0n0.ch/wall)

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * 1. Redistributions of source code must retain the above copyright notice,

 *    this list of conditions and the following disclaimer.

 *

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgment:

 *    "This product includes software developed by the pfSense Project

 *    for use in the pfSense® software distribution. (http://www.pfsense.org/).

 *

 * 4. The names "pfSense" and "pfSense Project" must not be used to

 *    endorse or promote products derived from this software without

 *    prior written permission. For written permission, please contact

 *    coreteam@pfsense.org.

 *

 * 5. Products derived from this software may not be called "pfSense"

 *    nor may "pfSense" appear in their names without prior written

 *    permission of the Electric Sheep Fencing, LLC.

 *

 * 6. Redistributions of any form whatsoever must retain the following

 *    acknowledgment:

 *

 * "This product includes software developed by the pfSense Project

 * for use in the pfSense software distribution (http://www.pfsense.org/).

 *

 * THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY

 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE pfSense PROJECT OR

 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

 * OF THE POSSIBILITY OF SUCH DAMAGE.

 */

		$file = tempnam("/tmp", "php-encrypt");

		@unlink($file);

		@unlink("{$file}.dec");

		@unlink("{$file}.enc");

	function encrypt_data(& $data, $pass) {

		return base64_encode(crypt_data($data, $pass, "-e"));

	}

	function decrypt_data(& $data, $pass) {

		return crypt_data(base64_decode($data), $pass, "-d");

	}

	function tagfile_reformat($in, & $out, $tag) {

		$out = "---- BEGIN {$tag} ----\n";

		$size = 80;

		$oset = 0;

		while ($size >= 64) {

			$line = substr($in, $oset, 64);

			$out .= $line."\n";

			$size = strlen($line);

			$oset += $size;

		}

		$out .= "---- END {$tag} ----\n";

		return true;

	}

	function tagfile_deformat($in, & $out, $tag) {

		$btag_val = "---- BEGIN {$tag} ----";

		$etag_val = "---- END {$tag} ----";

		$btag_len = strlen($btag_val);

		$etag_len = strlen($etag_val);

		$btag_pos = stripos($in, $btag_val);

		$etag_pos = stripos($in, $etag_val);

		$body_pos = $btag_pos + $btag_len;

		$body_len = strlen($in);

		$body_len -= $etag_len + 1;

		$out = substr($in, $body_pos, $body_len);

		return true;

	}