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176 lines
3.9 KiB
PHP
176 lines
3.9 KiB
PHP
<?php
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/**
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* Copyright (C) 2015 Datto, Inc.
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*
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* This file is part of PHP JSON-RPC HTTP.
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*
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* PHP JSON-RPC HTTP is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* PHP JSON-RPC HTTP is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with PHP JSON-RPC HTTP. If not, see <http://www.gnu.org/licenses/>.
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*
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* @author Spencer Mortensen <smortensen@datto.com>
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* @license http://www.gnu.org/licenses/lgpl-3.0.html LGPL-3.0
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* @copyright 2015 Datto, Inc.
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*/
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namespace Datto\JsonRpc\Http;
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use Datto\JsonRpc;
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use Datto\JsonRpc\Evaluator;
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/**
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* Class Server
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*
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* @link http://www.simple-is-better.org/json-rpc/transport_http.html Proposed specifications
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*
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* @package Datto\JsonRpc\Http
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*/
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class Server
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{
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private static $CONTENT_TYPE = 'application/json';
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/** @var Evaluator */
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private $evaluator;
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/**
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* @param Evaluator $evaluator
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*/
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public function __construct($evaluator)
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{
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$this->evaluator = $evaluator;
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}
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public function reply()
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{
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$contentType = $_SERVER['CONTENT_TYPE'] ?? '';
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if (strncmp($contentType, self::$CONTENT_TYPE, strlen(self::$CONTENT_TYPE)) !== 0) {
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self::errorInvalidContentType();
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return;
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}
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$message = @file_get_contents('php://input');
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if ($message === false) {
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self::errorInvalidBody();
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return;
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}
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$server = new JsonRpc\Server($this->evaluator);
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$reply = $server->reply($message);
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if ($reply === null) {
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self::successNoContent();
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return;
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}
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self::successContent($reply);
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}
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private static function errorInvalidContentType()
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{
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self::error(415, 'Unsupported Media Type', "Please submit your request with the HTTP header:<br>\r\n“Content-Type: " . self::$CONTENT_TYPE . "”");
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}
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private static function errorInvalidBody()
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{
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self::error(400, 'Bad Request', "Unable to read the HTTP body.");
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}
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private static function successNoContent()
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{
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header('HTTP/1.1 204 No Content');
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}
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/**
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* Sends a text value as the body of an HTTP/1.1 "200 OK" response.
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*
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* @param string $content
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* String value that will be sent as the body of the HTTP request.
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*/
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private static function successContent($content)
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{
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header('HTTP/1.1 200 OK');
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header('Content-Type: ' . self::$CONTENT_TYPE);
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header('Content-Length: ' . strlen($content));
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echo $content;
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}
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/**
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* Sends an error response.
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*
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* @param int $code
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* Integer representing the HTTP/1.1 error code.
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*
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* @param string $title
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* String representing the HTTP/1.1 error name.
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*
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* @param string $description
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* Detailed explanation of the error.
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*/
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private static function error($code, $title, $description)
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{
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header("HTTP/1.1 {$code} {$title}");
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echo <<<EOS
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>Error {$code}: {$title}</title>
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<style type='text/css'>
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* { margin:0; padding:0; }
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body {
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margin: 12.5%;
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font-family: Georgia,serif;
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line-height: 1.5em;
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color: #333;
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}
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header {
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margin: 0 0 1.5em 0;
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}
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h1 {
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font-size: 2em;
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padding: 0 0 .25em 0;
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}
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header p {
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font-size: 1.2599em;
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color: #666;
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font-style: italic;
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text-transform: lowercase;
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}
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</style>
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</head>
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<body>
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<header>
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<h1>Error {$code}</h1>
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<p>{$title}</p>
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</header>
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<p>{$description}</p>
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</body>
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</html>
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EOS;
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}
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}
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