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<?php
/*
* crypt.inc
*
* part of pfSense (https://www.pfsense.org)
* Copyright (c) 2008-2016 Rubicon Communications, LLC (Netgate)
* 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.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
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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