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<?php
/*
* crypt.inc
*
* part of pfSense (https://www.pfsense.org)
* Copyright (c) 2008-2016 Electric Sheep Fencing, LLC
* Copyright (c) 2008 Shrew Soft Inc. All rights reserved.
* All rights reserved.
*
* originally part of m0n0wall (http://m0n0.ch/wall)
* Copyright (C) 2003-2004 Manuel Kasper <mk@neon1.net>.
* All rights reserved.
*
* 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.
*/
function crypt_data($val, $pass, $opt) {
$file = tempnam("/tmp", "php-encrypt");
file_put_contents("{$file}.dec", $val);
exec("/usr/bin/openssl enc {$opt} -aes-256-cbc -in {$file}.dec -out {$file}.enc -k " . escapeshellarg($pass));
if (file_exists("{$file}.enc")) {
$result = file_get_contents("{$file}.enc");
} else {
$result = "";
log_error(gettext("Failed to encrypt/decrypt data!"));
}
@unlink($file);
@unlink("{$file}.dec");
@unlink("{$file}.enc");
return $result;
}
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, $etag_val);
if (($btag_pos === false) || ($etag_pos === false)) {
return false;
}
$body_pos = $btag_pos + $btag_len;
$body_len = strlen($in);
$body_len -= $btag_len;
$body_len -= $etag_len + 1;
$out = substr($in, $body_pos, $body_len);
return true;
}
?>
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