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<?php
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/*
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* crypt.inc
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*
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* part of pfSense (https://www.pfsense.org)
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* Copyright (c) 2008-2016 Rubicon Communications, LLC (Netgate)
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* Copyright (c) 2008 Shrew Soft Inc. All rights reserved.
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* All rights reserved.
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*
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* originally part of m0n0wall (http://m0n0.ch/wall)
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* Copyright (c) 2003-2004 Manuel Kasper <mk@neon1.net>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgment:
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* "This product includes software developed by the pfSense Project
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* for use in the pfSense® software distribution. (http://www.pfsense.org/).
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*
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* 4. The names "pfSense" and "pfSense Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* coreteam@pfsense.org.
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*
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* 5. Products derived from this software may not be called "pfSense"
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* nor may "pfSense" appear in their names without prior written
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* permission of the Electric Sheep Fencing, LLC.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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*
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* "This product includes software developed by the pfSense Project
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* for use in the pfSense software distribution (http://www.pfsense.org/).
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*
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* THIS SOFTWARE IS PROVIDED BY THE pfSense PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE pfSense PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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function crypt_data($val, $pass, $opt) {
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$file = tempnam("/tmp", "php-encrypt");
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file_put_contents("{$file}.dec", $val);
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exec("/usr/bin/openssl enc {$opt} -aes-256-cbc -in {$file}.dec -out {$file}.enc -k " . escapeshellarg($pass));
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if (file_exists("{$file}.enc")) {
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$result = file_get_contents("{$file}.enc");
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} else {
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$result = "";
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log_error(gettext("Failed to encrypt/decrypt data!"));
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}
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@unlink($file);
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@unlink("{$file}.dec");
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@unlink("{$file}.enc");
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return $result;
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}
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function encrypt_data(& $data, $pass) {
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return base64_encode(crypt_data($data, $pass, "-e"));
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}
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function decrypt_data(& $data, $pass) {
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return crypt_data(base64_decode($data), $pass, "-d");
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}
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function tagfile_reformat($in, & $out, $tag) {
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$out = "---- BEGIN {$tag} ----\n";
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$size = 80;
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$oset = 0;
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while ($size >= 64) {
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$line = substr($in, $oset, 64);
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$out .= $line."\n";
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$size = strlen($line);
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$oset += $size;
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}
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$out .= "---- END {$tag} ----\n";
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return true;
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}
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function tagfile_deformat($in, & $out, $tag) {
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$btag_val = "---- BEGIN {$tag} ----";
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$etag_val = "---- END {$tag} ----";
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$btag_len = strlen($btag_val);
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$etag_len = strlen($etag_val);
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$btag_pos = stripos($in, $btag_val);
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$etag_pos = stripos($in, $etag_val);
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if (($btag_pos === false) || ($etag_pos === false)) {
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return false;
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}
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$body_pos = $btag_pos + $btag_len;
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$body_len = strlen($in);
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$body_len -= $btag_len;
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$body_len -= $etag_len + 1;
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$out = substr($in, $body_pos, $body_len);
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return true;
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}
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?>
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