mirror of
https://github.com/ONLYOFFICE/document-server-integration.git
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80 lines
2.4 KiB
PHP
80 lines
2.4 KiB
PHP
<?php
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/*
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*
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* (c) Copyright Ascensio System SIA 2019
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*
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* The MIT License (MIT)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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?>
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<?php
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require_once( dirname(__FILE__) . '/config.php' );
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function isJwtEnabled() {
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return !empty($GLOBALS['DOC_SERV_JWT_SECRET']);
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}
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function jwtEncode($payload) {
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$header = [
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"alg" => "HS256",
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"typ" => "JWT"
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];
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$encHeader = base64UrlEncode(json_encode($header));
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$encPayload = base64UrlEncode(json_encode($payload));
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$hash = base64UrlEncode(calculateHash($encHeader, $encPayload));
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return "$encHeader.$encPayload.$hash";
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}
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function jwtDecode($token) {
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if (!isJwtEnabled()) return "";
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$split = explode(".", $token);
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if (count($split) != 3) return "";
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$hash = base64UrlEncode(calculateHash($split[0], $split[1]));
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if (strcmp($hash, $split[2]) != 0) return "";
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return base64UrlDecode($split[1]);
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}
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function calculateHash($encHeader, $encPayload) {
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return hash_hmac("sha256", "$encHeader.$encPayload", $GLOBALS['DOC_SERV_JWT_SECRET'], true);
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}
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function base64UrlEncode($str) {
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return str_replace("/", "_", str_replace("+", "-", trim(base64_encode($str), "=")));
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}
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function base64UrlDecode($payload) {
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$b64 = str_replace("_", "/", str_replace("-", "+", $payload));
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switch (strlen($b64) % 4) {
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case 2:
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$b64 = $b64 . "=="; break;
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case 3:
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$b64 = $b64 . "="; break;
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}
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return base64_decode($b64);
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}
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?>
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