mirror of
https://github.com/ONLYOFFICE/document-server-integration.git
synced 2026-04-07 14:06:11 +08:00
69 lines
1.9 KiB
PHP
69 lines
1.9 KiB
PHP
<?php
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/**
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*
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* (c) Copyright Ascensio System SIA 2020
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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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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