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<?php
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/* $Id$ */
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/*
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Copyright (C) 2008 Shrew Soft Inc
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All rights reserved.
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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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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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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, 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 OF THE
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POSSIBILITY OF SUCH DAMAGE.
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pfSense_BUILDER_BINARIES: /usr/bin/openssl
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pfSense_MODULE: crypto
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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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$result = "";
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log_error("Failed to encrypt/decrypt data!");
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}
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@unlink($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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