907 lines
33 KiB
PHP
907 lines
33 KiB
PHP
<?php
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namespace dokuwiki\HTTP;
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define('HTTP_NL', "\r\n");
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/**
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* This class implements a basic HTTP client
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*
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* It supports POST and GET, Proxy usage, basic authentication,
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* handles cookies and referrers. It is based upon the httpclient
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* function from the VideoDB project.
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*
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* @link https://www.splitbrain.org/projects/videodb
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* @author Andreas Goetz <cpuidle@gmx.de>
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* @author Andreas Gohr <andi@splitbrain.org>
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* @author Tobias Sarnowski <sarnowski@new-thoughts.org>
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*/
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class HTTPClient
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{
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//set these if you like
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public $agent; // User agent
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public $http = '1.0'; // HTTP version defaults to 1.0
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public $timeout = 15; // read timeout (seconds)
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public $cookies = [];
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public $referer = '';
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public $max_redirect = 3;
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public $max_bodysize = 0;
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public $max_bodysize_abort = true; // if set, abort if the response body is bigger than max_bodysize
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public $header_regexp = ''; // if set this RE must match against the headers, else abort
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public $headers = [];
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public $debug = false;
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public $start = 0.0; // for timings
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public $keep_alive = true; // keep alive rocks
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// don't set these, read on error
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public $error;
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public $redirect_count = 0;
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// read these after a successful request
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public $status = 0;
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public $resp_body;
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public $resp_headers;
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// set these to do basic authentication
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public $user;
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public $pass;
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// set these if you need to use a proxy
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public $proxy_host;
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public $proxy_port;
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public $proxy_user;
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public $proxy_pass;
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public $proxy_ssl; //boolean set to true if your proxy needs SSL
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public $proxy_except; // regexp of URLs to exclude from proxy
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// list of kept alive connections
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protected static $connections = [];
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// what we use as boundary on multipart/form-data posts
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protected $boundary = '---DokuWikiHTTPClient--4523452351';
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/**
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* Constructor.
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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public function __construct()
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{
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$this->agent = 'Mozilla/4.0 (compatible; DokuWiki HTTP Client; ' . PHP_OS . ')';
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if (extension_loaded('zlib')) $this->headers['Accept-encoding'] = 'gzip';
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$this->headers['Accept'] = 'text/xml,application/xml,application/xhtml+xml,' .
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'text/html,text/plain,image/png,image/jpeg,image/gif,*/*';
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$this->headers['Accept-Language'] = 'en-us';
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}
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/**
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* Simple function to do a GET request
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*
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* Returns the wanted page or false on an error;
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*
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* @param string $url The URL to fetch
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* @param bool $sloppy304 Return body on 304 not modified
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* @return false|string response body, false on error
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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public function get($url, $sloppy304 = false)
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{
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if (!$this->sendRequest($url)) return false;
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if ($this->status == 304 && $sloppy304) return $this->resp_body;
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if ($this->status < 200 || $this->status > 206) return false;
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return $this->resp_body;
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}
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/**
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* Simple function to do a GET request with given parameters
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*
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* Returns the wanted page or false on an error.
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*
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* This is a convenience wrapper around get(). The given parameters
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* will be correctly encoded and added to the given base URL.
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*
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* @param string $url The URL to fetch
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* @param array $data Associative array of parameters
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* @param bool $sloppy304 Return body on 304 not modified
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* @return false|string response body, false on error
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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public function dget($url, $data, $sloppy304 = false)
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{
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if (strpos($url, '?')) {
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$url .= '&';
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} else {
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$url .= '?';
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}
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$url .= $this->postEncode($data);
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return $this->get($url, $sloppy304);
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}
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/**
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* Simple function to do a POST request
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*
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* Returns the resulting page or false on an error;
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*
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* @param string $url The URL to fetch
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* @param array $data Associative array of parameters
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* @return false|string response body, false on error
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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public function post($url, $data)
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{
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if (!$this->sendRequest($url, $data, 'POST')) return false;
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if ($this->status < 200 || $this->status > 206) return false;
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return $this->resp_body;
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}
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/**
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* Send an HTTP request
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*
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* This method handles the whole HTTP communication. It respects set proxy settings,
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* builds the request headers, follows redirects and parses the response.
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*
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* Post data should be passed as associative array. When passed as string it will be
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* sent as is. You will need to setup your own Content-Type header then.
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*
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* @param string $url - the complete URL
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* @param mixed $data - the post data either as array or raw data
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* @param string $method - HTTP Method usually GET or POST.
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* @return bool - true on success
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*
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* @author Andreas Goetz <cpuidle@gmx.de>
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* @author Andreas Gohr <andi@splitbrain.org>
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*/
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public function sendRequest($url, $data = '', $method = 'GET')
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{
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$this->start = microtime(true);
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$this->error = '';
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$this->status = 0;
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$this->resp_body = '';
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$this->resp_headers = [];
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// save unencoded data for recursive call
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$unencodedData = $data;
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// don't accept gzip if truncated bodies might occur
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if (
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$this->max_bodysize &&
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!$this->max_bodysize_abort &&
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isset($this->headers['Accept-encoding']) &&
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$this->headers['Accept-encoding'] == 'gzip'
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) {
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unset($this->headers['Accept-encoding']);
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}
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// parse URL into bits
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$uri = parse_url($url);
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$server = $uri['host'];
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$path = empty($uri['path']) ? '/' : $uri['path'];
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$uriPort = empty($uri['port']) ? null : $uri['port'];
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if (!empty($uri['query'])) $path .= '?' . $uri['query'];
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if (isset($uri['user'])) $this->user = $uri['user'];
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if (isset($uri['pass'])) $this->pass = $uri['pass'];
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// proxy setup
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if ($this->useProxyForUrl($url)) {
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$request_url = $url;
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$server = $this->proxy_host;
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$port = $this->proxy_port;
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if (empty($port)) $port = 8080;
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$use_tls = $this->proxy_ssl;
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} else {
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$request_url = $path;
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$port = $uriPort ?: ($uri['scheme'] == 'https' ? 443 : 80);
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$use_tls = ($uri['scheme'] == 'https');
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}
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// add SSL stream prefix if needed - needs SSL support in PHP
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if ($use_tls) {
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if (!in_array('ssl', stream_get_transports())) {
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$this->status = -200;
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$this->error = 'This PHP version does not support SSL - cannot connect to server';
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}
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$server = 'ssl://' . $server;
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}
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// prepare headers
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$headers = $this->headers;
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$headers['Host'] = $uri['host']
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. ($uriPort ? ':' . $uriPort : '');
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$headers['User-Agent'] = $this->agent;
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$headers['Referer'] = $this->referer;
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if ($method == 'POST') {
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if (is_array($data)) {
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if (empty($headers['Content-Type'])) {
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$headers['Content-Type'] = null;
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}
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if ($headers['Content-Type'] == 'multipart/form-data') {
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$headers['Content-Type'] = 'multipart/form-data; boundary=' . $this->boundary;
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$data = $this->postMultipartEncode($data);
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} else {
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$headers['Content-Type'] = 'application/x-www-form-urlencoded';
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$data = $this->postEncode($data);
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}
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}
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} elseif ($method == 'GET') {
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$data = ''; //no data allowed on GET requests
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}
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$contentlength = strlen($data);
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if ($contentlength) {
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$headers['Content-Length'] = $contentlength;
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}
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if ($this->user) {
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$headers['Authorization'] = 'Basic ' . base64_encode($this->user . ':' . $this->pass);
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}
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if ($this->proxy_user) {
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$headers['Proxy-Authorization'] = 'Basic ' . base64_encode($this->proxy_user . ':' . $this->proxy_pass);
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}
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// already connected?
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$connectionId = $this->uniqueConnectionId($server, $port);
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$this->debug('connection pool', self::$connections);
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$socket = null;
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if (isset(self::$connections[$connectionId])) {
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$this->debug('reusing connection', $connectionId);
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$socket = self::$connections[$connectionId];
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}
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if (is_null($socket) || feof($socket)) {
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$this->debug('opening connection', $connectionId);
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// open socket
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$socket = @fsockopen($server, $port, $errno, $errstr, $this->timeout);
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if (!$socket) {
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$this->status = -100;
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$this->error = "Could not connect to $server:$port\n$errstr ($errno)";
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return false;
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}
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// try to establish a CONNECT tunnel for SSL
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try {
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if ($this->ssltunnel($socket, $request_url)) {
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// no keep alive for tunnels
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$this->keep_alive = false;
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// tunnel is authed already
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if (isset($headers['Proxy-Authentication'])) unset($headers['Proxy-Authentication']);
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}
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} catch (HTTPClientException $e) {
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$this->status = $e->getCode();
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$this->error = $e->getMessage();
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fclose($socket);
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return false;
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}
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// keep alive?
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if ($this->keep_alive) {
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self::$connections[$connectionId] = $socket;
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} else {
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unset(self::$connections[$connectionId]);
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}
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}
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if ($this->keep_alive && !$this->useProxyForUrl($request_url)) {
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// RFC 2068, section 19.7.1: A client MUST NOT send the Keep-Alive
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// connection token to a proxy server. We still do keep the connection the
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// proxy alive (well except for CONNECT tunnels)
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$headers['Connection'] = 'Keep-Alive';
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} else {
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$headers['Connection'] = 'Close';
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}
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try {
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//set non-blocking
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stream_set_blocking($socket, 0);
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// build request
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$request = "$method $request_url HTTP/" . $this->http . HTTP_NL;
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$request .= $this->buildHeaders($headers);
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$request .= $this->getCookies();
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$request .= HTTP_NL;
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$request .= $data;
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$this->debug('request', $request);
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$this->sendData($socket, $request, 'request');
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// read headers from socket
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$r_headers = '';
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do {
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$r_line = $this->readLine($socket, 'headers');
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$r_headers .= $r_line;
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} while ($r_line != "\r\n" && $r_line != "\n");
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$this->debug('response headers', $r_headers);
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// check if expected body size exceeds allowance
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if ($this->max_bodysize && preg_match('/\r?\nContent-Length:\s*(\d+)\r?\n/i', $r_headers, $match)) {
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if ($match[1] > $this->max_bodysize) {
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if ($this->max_bodysize_abort)
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throw new HTTPClientException('Reported content length exceeds allowed response size');
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else $this->error = 'Reported content length exceeds allowed response size';
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}
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}
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// get Status
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if (!preg_match('/^HTTP\/(\d\.\d)\s*(\d+).*?\n/s', $r_headers, $m))
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throw new HTTPClientException('Server returned bad answer ' . $r_headers);
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$this->status = $m[2];
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// handle headers and cookies
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$this->resp_headers = $this->parseHeaders($r_headers);
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if (isset($this->resp_headers['set-cookie'])) {
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foreach ((array)$this->resp_headers['set-cookie'] as $cookie) {
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[$cookie] = sexplode(';', $cookie, 2, '');
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[$key, $val] = sexplode('=', $cookie, 2, '');
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$key = trim($key);
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if ($val == 'deleted') {
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if (isset($this->cookies[$key])) {
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unset($this->cookies[$key]);
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}
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} elseif ($key) {
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$this->cookies[$key] = $val;
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}
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}
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}
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$this->debug('Object headers', $this->resp_headers);
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// check server status code to follow redirect
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if (in_array($this->status, [301, 302, 303, 307, 308])) {
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if (empty($this->resp_headers['location'])) {
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throw new HTTPClientException('Redirect but no Location Header found');
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} elseif ($this->redirect_count == $this->max_redirect) {
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throw new HTTPClientException('Maximum number of redirects exceeded');
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} else {
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// close the connection because we don't handle content retrieval here
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// that's the easiest way to clean up the connection
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fclose($socket);
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unset(self::$connections[$connectionId]);
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$this->redirect_count++;
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$this->referer = $url;
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// handle non-RFC-compliant relative redirects
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if (!preg_match('/^http/i', $this->resp_headers['location'])) {
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if ($this->resp_headers['location'][0] != '/') {
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$this->resp_headers['location'] = $uri['scheme'] . '://' . $uri['host'] . ':' . $uriPort .
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dirname($path) . '/' . $this->resp_headers['location'];
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} else {
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$this->resp_headers['location'] = $uri['scheme'] . '://' . $uri['host'] . ':' . $uriPort .
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$this->resp_headers['location'];
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}
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}
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if ($this->status == 307 || $this->status == 308) {
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// perform redirected request, same method as before (required by RFC)
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return $this->sendRequest($this->resp_headers['location'], $unencodedData, $method);
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} else {
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// perform redirected request, always via GET (required by RFC)
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return $this->sendRequest($this->resp_headers['location'], [], 'GET');
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}
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}
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}
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// check if headers are as expected
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if ($this->header_regexp && !preg_match($this->header_regexp, $r_headers))
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throw new HTTPClientException('The received headers did not match the given regexp');
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//read body (with chunked encoding if needed)
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$r_body = '';
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if (
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(
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isset($this->resp_headers['transfer-encoding']) &&
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$this->resp_headers['transfer-encoding'] == 'chunked'
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) || (
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isset($this->resp_headers['transfer-coding']) &&
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$this->resp_headers['transfer-coding'] == 'chunked'
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)
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) {
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$abort = false;
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do {
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$chunk_size = '';
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while (preg_match('/^[a-zA-Z0-9]?$/', $byte = $this->readData($socket, 1, 'chunk'))) {
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// read chunksize until \r
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$chunk_size .= $byte;
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if (strlen($chunk_size) > 128) // set an abritrary limit on the size of chunks
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throw new HTTPClientException('Allowed response size exceeded');
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}
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$this->readLine($socket, 'chunk'); // readtrailing \n
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$chunk_size = hexdec($chunk_size);
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if ($this->max_bodysize && $chunk_size + strlen($r_body) > $this->max_bodysize) {
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if ($this->max_bodysize_abort)
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throw new HTTPClientException('Allowed response size exceeded');
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$this->error = 'Allowed response size exceeded';
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$chunk_size = $this->max_bodysize - strlen($r_body);
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$abort = true;
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}
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if ($chunk_size > 0) {
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$r_body .= $this->readData($socket, $chunk_size, 'chunk');
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$this->readData($socket, 2, 'chunk'); // read trailing \r\n
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}
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} while ($chunk_size && !$abort);
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} elseif (
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isset($this->resp_headers['content-length']) &&
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!isset($this->resp_headers['transfer-encoding'])
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) {
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/* RFC 2616
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* If a message is received with both a Transfer-Encoding header field and a Content-Length
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* header field, the latter MUST be ignored.
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*/
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// read up to the content-length or max_bodysize
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// for keep alive we need to read the whole message to clean up the socket for the next read
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if (
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!$this->keep_alive &&
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$this->max_bodysize &&
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$this->max_bodysize < $this->resp_headers['content-length']
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) {
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$length = $this->max_bodysize + 1;
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} else {
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$length = $this->resp_headers['content-length'];
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}
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$r_body = $this->readData($socket, $length, 'response (content-length limited)', true);
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} elseif (!isset($this->resp_headers['transfer-encoding']) && $this->max_bodysize && !$this->keep_alive) {
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$r_body = $this->readData($socket, $this->max_bodysize + 1, 'response (content-length limited)', true);
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} elseif ((int)$this->status === 204) {
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// request has no content
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} else {
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// read entire socket
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while (!feof($socket)) {
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$r_body .= $this->readData($socket, 4096, 'response (unlimited)', true);
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}
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}
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// recheck body size, we might have read max_bodysize+1 or even the whole body, so we abort late here
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if ($this->max_bodysize) {
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if (strlen($r_body) > $this->max_bodysize) {
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if ($this->max_bodysize_abort) {
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throw new HTTPClientException('Allowed response size exceeded');
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} else {
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$this->error = 'Allowed response size exceeded';
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}
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}
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}
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} catch (HTTPClientException $err) {
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$this->error = $err->getMessage();
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if ($err->getCode())
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$this->status = $err->getCode();
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unset(self::$connections[$connectionId]);
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fclose($socket);
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return false;
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}
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if (
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!$this->keep_alive ||
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(isset($this->resp_headers['connection']) && $this->resp_headers['connection'] == 'Close')
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) {
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// close socket
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fclose($socket);
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unset(self::$connections[$connectionId]);
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}
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// decode gzip if needed
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if (
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isset($this->resp_headers['content-encoding']) &&
|
|
$this->resp_headers['content-encoding'] == 'gzip' &&
|
|
strlen($r_body) > 10 && str_starts_with($r_body, "\x1f\x8b\x08")
|
|
) {
|
|
$this->resp_body = @gzinflate(substr($r_body, 10));
|
|
if ($this->resp_body === false) {
|
|
$this->error = 'Failed to decompress gzip encoded content';
|
|
$this->resp_body = $r_body;
|
|
}
|
|
} else {
|
|
$this->resp_body = $r_body;
|
|
}
|
|
|
|
$this->debug('response body', $this->resp_body);
|
|
$this->redirect_count = 0;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Tries to establish a CONNECT tunnel via Proxy
|
|
*
|
|
* Protocol, Servername and Port will be stripped from the request URL when a successful CONNECT happened
|
|
*
|
|
* @param resource &$socket
|
|
* @param string &$requesturl
|
|
* @return bool true if a tunnel was established
|
|
* @throws HTTPClientException when a tunnel is needed but could not be established
|
|
*/
|
|
protected function ssltunnel(&$socket, &$requesturl)
|
|
{
|
|
if (!$this->useProxyForUrl($requesturl)) return false;
|
|
$requestinfo = parse_url($requesturl);
|
|
if ($requestinfo['scheme'] != 'https') return false;
|
|
if (empty($requestinfo['port'])) $requestinfo['port'] = 443;
|
|
|
|
// build request
|
|
$request = "CONNECT {$requestinfo['host']}:{$requestinfo['port']} HTTP/1.0" . HTTP_NL;
|
|
$request .= "Host: {$requestinfo['host']}" . HTTP_NL;
|
|
if ($this->proxy_user) {
|
|
$request .= 'Proxy-Authorization: Basic ' .
|
|
base64_encode($this->proxy_user . ':' . $this->proxy_pass) . HTTP_NL;
|
|
}
|
|
$request .= HTTP_NL;
|
|
|
|
$this->debug('SSL Tunnel CONNECT', $request);
|
|
$this->sendData($socket, $request, 'SSL Tunnel CONNECT');
|
|
|
|
// read headers from socket
|
|
$r_headers = '';
|
|
do {
|
|
$r_line = $this->readLine($socket, 'headers');
|
|
$r_headers .= $r_line;
|
|
} while ($r_line != "\r\n" && $r_line != "\n");
|
|
|
|
$this->debug('SSL Tunnel Response', $r_headers);
|
|
if (preg_match('/^HTTP\/1\.[01] 200/i', $r_headers)) {
|
|
// set correct peer name for verification (enabled since PHP 5.6)
|
|
stream_context_set_option($socket, 'ssl', 'peer_name', $requestinfo['host']);
|
|
|
|
// SSLv3 is broken, use only TLS connections.
|
|
// @link https://bugs.php.net/69195
|
|
if (PHP_VERSION_ID >= 50600 && PHP_VERSION_ID <= 50606) {
|
|
$cryptoMethod = STREAM_CRYPTO_METHOD_TLS_CLIENT;
|
|
} else {
|
|
// actually means neither SSLv2 nor SSLv3
|
|
$cryptoMethod = STREAM_CRYPTO_METHOD_SSLv23_CLIENT;
|
|
}
|
|
|
|
if (@stream_socket_enable_crypto($socket, true, $cryptoMethod)) {
|
|
$requesturl = ($requestinfo['path'] ?? '/') .
|
|
(empty($requestinfo['query']) ? '' : '?' . $requestinfo['query']);
|
|
return true;
|
|
}
|
|
|
|
throw new HTTPClientException(
|
|
'Failed to set up crypto for secure connection to ' . $requestinfo['host'],
|
|
-151
|
|
);
|
|
}
|
|
|
|
throw new HTTPClientException('Failed to establish secure proxy connection', -150);
|
|
}
|
|
|
|
/**
|
|
* Safely write data to a socket
|
|
*
|
|
* @param resource $socket An open socket handle
|
|
* @param string $data The data to write
|
|
* @param string $message Description of what is being read
|
|
* @throws HTTPClientException
|
|
*
|
|
* @author Tom N Harris <tnharris@whoopdedo.org>
|
|
*/
|
|
protected function sendData($socket, $data, $message)
|
|
{
|
|
// send request
|
|
$towrite = strlen($data);
|
|
$written = 0;
|
|
while ($written < $towrite) {
|
|
// check timeout
|
|
$time_used = microtime(true) - $this->start;
|
|
if ($time_used > $this->timeout)
|
|
throw new HTTPClientException(sprintf('Timeout while sending %s (%.3fs)', $message, $time_used), -100);
|
|
if (feof($socket))
|
|
throw new HTTPClientException("Socket disconnected while writing $message");
|
|
|
|
// select parameters
|
|
$sel_r = null;
|
|
$sel_w = [$socket];
|
|
$sel_e = null;
|
|
// wait for stream ready or timeout (1sec)
|
|
if (@stream_select($sel_r, $sel_w, $sel_e, 1) === false) {
|
|
usleep(1000);
|
|
continue;
|
|
}
|
|
|
|
// write to stream
|
|
$nbytes = fwrite($socket, substr($data, $written, 4096));
|
|
if ($nbytes === false)
|
|
throw new HTTPClientException("Failed writing to socket while sending $message", -100);
|
|
$written += $nbytes;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Safely read data from a socket
|
|
*
|
|
* Reads up to a given number of bytes or throws an exception if the
|
|
* response times out or ends prematurely.
|
|
*
|
|
* @param resource $socket An open socket handle in non-blocking mode
|
|
* @param int $nbytes Number of bytes to read
|
|
* @param string $message Description of what is being read
|
|
* @param bool $ignore_eof End-of-file is not an error if this is set
|
|
* @return string
|
|
*
|
|
* @throws HTTPClientException
|
|
* @author Tom N Harris <tnharris@whoopdedo.org>
|
|
*/
|
|
protected function readData($socket, $nbytes, $message, $ignore_eof = false)
|
|
{
|
|
$r_data = '';
|
|
// Does not return immediately so timeout and eof can be checked
|
|
if ($nbytes < 0) $nbytes = 0;
|
|
$to_read = $nbytes;
|
|
do {
|
|
$time_used = microtime(true) - $this->start;
|
|
if ($time_used > $this->timeout)
|
|
throw new HTTPClientException(
|
|
sprintf(
|
|
'Timeout while reading %s after %d bytes (%.3fs)',
|
|
$message,
|
|
strlen($r_data),
|
|
$time_used
|
|
),
|
|
-100
|
|
);
|
|
if (feof($socket)) {
|
|
if (!$ignore_eof)
|
|
throw new HTTPClientException("Premature End of File (socket) while reading $message");
|
|
break;
|
|
}
|
|
|
|
if ($to_read > 0) {
|
|
// select parameters
|
|
$sel_r = [$socket];
|
|
$sel_w = null;
|
|
$sel_e = null;
|
|
// wait for stream ready or timeout (1sec)
|
|
if (@stream_select($sel_r, $sel_w, $sel_e, 1) === false) {
|
|
usleep(1000);
|
|
continue;
|
|
}
|
|
|
|
$bytes = fread($socket, $to_read);
|
|
if ($bytes === false)
|
|
throw new HTTPClientException("Failed reading from socket while reading $message", -100);
|
|
$r_data .= $bytes;
|
|
$to_read -= strlen($bytes);
|
|
}
|
|
} while ($to_read > 0 && strlen($r_data) < $nbytes);
|
|
return $r_data;
|
|
}
|
|
|
|
/**
|
|
* Safely read a \n-terminated line from a socket
|
|
*
|
|
* Always returns a complete line, including the terminating \n.
|
|
*
|
|
* @param resource $socket An open socket handle in non-blocking mode
|
|
* @param string $message Description of what is being read
|
|
* @return string
|
|
*
|
|
* @throws HTTPClientException
|
|
* @author Tom N Harris <tnharris@whoopdedo.org>
|
|
*/
|
|
protected function readLine($socket, $message)
|
|
{
|
|
$r_data = '';
|
|
do {
|
|
$time_used = microtime(true) - $this->start;
|
|
if ($time_used > $this->timeout)
|
|
throw new HTTPClientException(
|
|
sprintf('Timeout while reading %s (%.3fs) >%s<', $message, $time_used, $r_data),
|
|
-100
|
|
);
|
|
if (feof($socket))
|
|
throw new HTTPClientException("Premature End of File (socket) while reading $message");
|
|
|
|
// select parameters
|
|
$sel_r = [$socket];
|
|
$sel_w = null;
|
|
$sel_e = null;
|
|
// wait for stream ready or timeout (1sec)
|
|
if (@stream_select($sel_r, $sel_w, $sel_e, 1) === false) {
|
|
usleep(1000);
|
|
continue;
|
|
}
|
|
|
|
$r_data = fgets($socket, 1024);
|
|
} while (!preg_match('/\n$/', $r_data));
|
|
return $r_data;
|
|
}
|
|
|
|
/**
|
|
* print debug info
|
|
*
|
|
* Uses _debug_text or _debug_html depending on the SAPI name
|
|
*
|
|
* @param string $info
|
|
* @param mixed $var
|
|
* @author Andreas Gohr <andi@splitbrain.org>
|
|
*
|
|
*/
|
|
protected function debug($info, $var = null)
|
|
{
|
|
if (!$this->debug) return;
|
|
if (PHP_SAPI == 'cli') {
|
|
$this->debugText($info, $var);
|
|
} else {
|
|
$this->debugHtml($info, $var);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* print debug info as HTML
|
|
*
|
|
* @param string $info
|
|
* @param mixed $var
|
|
*/
|
|
protected function debugHtml($info, $var = null)
|
|
{
|
|
echo '<b>' . $info . '</b> ' . (microtime(true) - $this->start) . 's<br />';
|
|
if (!is_null($var)) {
|
|
ob_start();
|
|
print_r($var);
|
|
$content = htmlspecialchars(ob_get_contents());
|
|
ob_end_clean();
|
|
echo '<pre>' . $content . '</pre>';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* prints debug info as plain text
|
|
*
|
|
* @param string $info
|
|
* @param mixed $var
|
|
*/
|
|
protected function debugText($info, $var = null)
|
|
{
|
|
echo '*' . $info . '* ' . (microtime(true) - $this->start) . "s\n";
|
|
if (!is_null($var)) print_r($var);
|
|
echo "\n-----------------------------------------------\n";
|
|
}
|
|
|
|
/**
|
|
* convert given header string to Header array
|
|
*
|
|
* All Keys are lowercased.
|
|
*
|
|
* @param string $string
|
|
* @return array
|
|
* @author Andreas Gohr <andi@splitbrain.org>
|
|
*
|
|
*/
|
|
protected function parseHeaders($string)
|
|
{
|
|
$headers = [];
|
|
$lines = explode("\n", $string);
|
|
array_shift($lines); //skip first line (status)
|
|
foreach ($lines as $line) {
|
|
[$key, $val] = sexplode(':', $line, 2, '');
|
|
$key = trim($key);
|
|
$val = trim($val);
|
|
$key = strtolower($key);
|
|
if (!$key) continue;
|
|
if (isset($headers[$key])) {
|
|
if (is_array($headers[$key])) {
|
|
$headers[$key][] = $val;
|
|
} else {
|
|
$headers[$key] = [$headers[$key], $val];
|
|
}
|
|
} else {
|
|
$headers[$key] = $val;
|
|
}
|
|
}
|
|
return $headers;
|
|
}
|
|
|
|
/**
|
|
* convert given header array to header string
|
|
*
|
|
* @param array $headers
|
|
* @return string
|
|
* @author Andreas Gohr <andi@splitbrain.org>
|
|
*
|
|
*/
|
|
protected function buildHeaders($headers)
|
|
{
|
|
$string = '';
|
|
foreach ($headers as $key => $value) {
|
|
if ($value === '') continue;
|
|
$string .= $key . ': ' . $value . HTTP_NL;
|
|
}
|
|
return $string;
|
|
}
|
|
|
|
/**
|
|
* get cookies as http header string
|
|
*
|
|
* @return string
|
|
* @author Andreas Goetz <cpuidle@gmx.de>
|
|
*
|
|
*/
|
|
protected function getCookies()
|
|
{
|
|
$headers = '';
|
|
foreach ($this->cookies as $key => $val) {
|
|
$headers .= "$key=$val; ";
|
|
}
|
|
$headers = substr($headers, 0, -2);
|
|
if ($headers) $headers = "Cookie: $headers" . HTTP_NL;
|
|
return $headers;
|
|
}
|
|
|
|
/**
|
|
* Encode data for posting
|
|
*
|
|
* @param array $data
|
|
* @return string
|
|
* @author Andreas Gohr <andi@splitbrain.org>
|
|
*
|
|
*/
|
|
protected function postEncode($data)
|
|
{
|
|
return http_build_query($data, '', '&');
|
|
}
|
|
|
|
/**
|
|
* Encode data for posting using multipart encoding
|
|
*
|
|
* @fixme use of urlencode might be wrong here
|
|
* @param array $data
|
|
* @return string
|
|
* @author Andreas Gohr <andi@splitbrain.org>
|
|
*
|
|
*/
|
|
protected function postMultipartEncode($data)
|
|
{
|
|
$boundary = '--' . $this->boundary;
|
|
$out = '';
|
|
foreach ($data as $key => $val) {
|
|
$out .= $boundary . HTTP_NL;
|
|
if (!is_array($val)) {
|
|
$out .= 'Content-Disposition: form-data; name="' . urlencode($key) . '"' . HTTP_NL;
|
|
$out .= HTTP_NL; // end of headers
|
|
$out .= $val;
|
|
$out .= HTTP_NL;
|
|
} else {
|
|
$out .= 'Content-Disposition: form-data; name="' . urlencode($key) . '"';
|
|
if ($val['filename']) $out .= '; filename="' . urlencode($val['filename']) . '"';
|
|
$out .= HTTP_NL;
|
|
if ($val['mimetype']) $out .= 'Content-Type: ' . $val['mimetype'] . HTTP_NL;
|
|
$out .= HTTP_NL; // end of headers
|
|
$out .= $val['body'];
|
|
$out .= HTTP_NL;
|
|
}
|
|
}
|
|
$out .= "$boundary--" . HTTP_NL;
|
|
return $out;
|
|
}
|
|
|
|
/**
|
|
* Generates a unique identifier for a connection.
|
|
*
|
|
* @param string $server
|
|
* @param string $port
|
|
* @return string unique identifier
|
|
*/
|
|
protected function uniqueConnectionId($server, $port)
|
|
{
|
|
return "$server:$port";
|
|
}
|
|
|
|
/**
|
|
* Should the Proxy be used for the given URL?
|
|
*
|
|
* Checks the exceptions
|
|
*
|
|
* @param string $url
|
|
* @return bool
|
|
*/
|
|
protected function useProxyForUrl($url)
|
|
{
|
|
return $this->proxy_host && (!$this->proxy_except || !preg_match('/' . $this->proxy_except . '/i', $url));
|
|
}
|
|
}
|