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189 lines
4.8 KiB
189 lines
4.8 KiB
1 year ago
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<?php
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/*
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** Zabbix
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** Copyright (C) 2001-2023 Zabbix SIA
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program 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 General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**/
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/**
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* Access the HTTP Request
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*/
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class CHttpRequest {
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/**
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* additional HTTP headers not prefixed with HTTP_ in $_SERVER superglobal
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*/
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private $add_headers = ['CONTENT_TYPE', 'CONTENT_LENGTH', 'Authorization', 'PATH-INFO'];
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private $body;
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private $method;
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private $protocol;
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private $request_method;
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private $headers;
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private $raw;
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/**
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* Retrieve HTTP Body
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* @param Array Additional Headers to retrieve
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*/
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public function __construct($add_headers = false) {
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$this->retrieve_headers($add_headers);
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$this->body = @file_get_contents('php://input');
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}
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/**
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* Retrieve the HTTP request headers from the $_SERVER superglobal
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* @param Array Additional Headers to retrieve
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*/
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public function retrieve_headers($add_headers = false) {
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if ($add_headers) {
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$this->add_headers = array_merge($this->add_headers, $add_headers);
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}
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if (isset($_SERVER['HTTP_METHOD'])) {
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$this->method = $_SERVER['HTTP_METHOD'];
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unset($_SERVER['HTTP_METHOD']);
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}
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else {
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$this->method = isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : false;
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}
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$this->protocol = isset($_SERVER['SERVER_PROTOCOL']) ? $_SERVER['SERVER_PROTOCOL'] : false;
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$this->request_method = isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : false;
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$this->headers = [];
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if (function_exists('getallheaders')) {
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$headers = getallheaders();
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if (array_key_exists('Authorization', $headers)) {
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$this->headers['AUTHORIZATION'] = $headers['Authorization'];
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}
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}
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foreach ($_SERVER as $i => $val) {
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if (strpos($i, 'HTTP_') === 0 || in_array($i, $this->add_headers)) {
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$name = str_replace(['HTTP_', '_'], ['', '-'], $i);
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$this->headers[strtoupper($name)] = $val;
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}
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}
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}
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/**
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* Retrieve HTTP Method
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*/
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public function method() {
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return $this->method;
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}
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/**
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* Retrieve HTTP Body
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*/
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public function body() {
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return $this->body;
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}
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/**
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* Retrieve an HTTP Header
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* @param string Case-Insensitive HTTP Header Name (eg: "User-Agent")
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*/
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public function header($name) {
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$name = strtoupper($name);
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return isset($this->headers[$name]) ? $this->headers[$name] : false;
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}
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/**
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* Retrieve all HTTP Headers
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* @return array HTTP Headers
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*/
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public function headers() {
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return $this->headers;
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}
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/**
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* Get authentication header bearer value, return null when no authentication header exists or
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* authentication method is not bearer type.
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*
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* @return string|null
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*/
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public function getAuthBearerValue() {
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$auth = $this->header('AUTHORIZATION');
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if (is_string($auth) && substr($auth, 0, 7) === ZBX_API_HEADER_AUTHENTICATE_PREFIX) {
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return substr($auth, 7);
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}
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return null;
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}
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/**
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* Get request PATH-INFO segment by index. Return empty string if non-existing index requested.
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*
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* @param int $index PATH-INFO segment index.
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*
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* @return string
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*/
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public function getPathInfoSegment(int $index): string {
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$pathinfo_segments = explode('/', substr($this->header('PATH-INFO'), 1));
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return array_key_exists($index, $pathinfo_segments) ? $pathinfo_segments[$index] : '';
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}
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/**
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* Get argument passed in $_GET. Returns default value when argument not set.
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*
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* @param string $name Argument's name.
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* @param mixed $default Default value to return when requested argument not set.
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*
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* @return mixed
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*/
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public function getUrlArgument(string $name, $default = null) {
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return array_key_exists($name, $_GET) ? $_GET[$name] : $default;
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}
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/**
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* Checks if argument exists in $_GET request.
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*
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* @param string $name Argument's name.
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*
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* @return bool
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*/
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public function hasUrlArgument(string $name): bool {
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return array_key_exists($name, $_GET);
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}
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/**
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* Return Raw HTTP Request (note: This is incomplete)
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* @param bool ReBuild the Raw HTTP Request
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*/
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public function raw($refresh = false) {
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if (isset($this->raw) && !$refresh) {
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return $this->raw; // return cached
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}
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$headers = $this->headers();
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$this->raw = $this->method."\r\n";
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foreach ($headers as $i=>$header) {
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$this->raw .= $i.': '.$header."\r\n";
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}
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$this->raw .= "\r\n".$this->body;
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return $this->raw;
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}
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}
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