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<?php
class wfWAFHTTP {
private $url;
private $auth;
private $body;
private $cookies;
// private $fileNames;
// private $files;
private $headers;
private $method;
private $queryString;
/**
* @var wfWAFHTTPTransport
*/
private $transport;
/**
* @param string $url
* @param wfWAFHTTP $request
* @return wfWAFHTTPResponse|bool
* @throws wfWAFHTTPTransportException
*/
public static function get($url, $request = null) {
if (!$request) {
$request = new self();
}
$request->setUrl($url);
$request->setMethod('GET');
$request->setTransport(wfWAFHTTPTransport::getInstance());
// $request->setCookies("XDEBUG_SESSION=netbeans-xdebug");
return $request->send();
}
/**
* @param string $url
* @param array $post
* @param wfWAFHTTP $request
* @return wfWAFHTTPResponse|bool
* @throws wfWAFHTTPTransportException
*/
public static function post($url, $post = array(), $request = null) {
if (!$request) {
$request = new self();
}
$request->setUrl($url);
$request->setMethod('POST');
$request->setBody($post);
$request->setTransport(wfWAFHTTPTransport::getInstance());
return $request->send();
}
/**
* @return wfWAFHTTPResponse|bool
* @throws wfWAFHTTPTransportException
*/
public function send() {
if (!$this->getTransport()) {
throw new wfWAFHTTPTransportException('Need to provide a valid HTTP transport before calling ' . __METHOD__);
}
return $this->getTransport()->send($this);
}
/**
* @return mixed
*/
public function getUrl() {
return $this->url;
}
/**
* @param mixed $url
*/
public function setUrl($url) {
$this->url = $url;
}
/**
* @return mixed
*/
public function getAuth() {
return $this->auth;
}
/**
* @param mixed $auth
*/
public function setAuth($auth) {
$this->auth = $auth;
}
/**
* @return mixed
*/
public function getBody() {
return $this->body;
}
/**
* @param mixed $body
*/
public function setBody($body) {
$this->body = $body;
}
/**
* @return mixed
*/
public function getCookies() {
return $this->cookies;
}
/**
* @param mixed $cookies
*/
public function setCookies($cookies) {
$this->cookies = $cookies;
}
/**
* @return mixed
*/
public function getHeaders() {
return $this->headers;
}
/**
* @param mixed $headers
*/
public function setHeaders($headers) {
$this->headers = $headers;
}
/**
* @return mixed
*/
public function getMethod() {
return $this->method;
}
/**
* @param mixed $method
*/
public function setMethod($method) {
$this->method = $method;
}
/**
* @return mixed
*/
public function getQueryString() {
return $this->queryString;
}
/**
* @param mixed $queryString
*/
public function setQueryString($queryString) {
$this->queryString = $queryString;
}
/**
* @return wfWAFHTTPTransport
*/
public function getTransport() {
return $this->transport;
}
/**
* @param wfWAFHTTPTransport $transport
*/
public function setTransport($transport) {
$this->transport = $transport;
}
}
class wfWAFHTTPResponse {
private $body;
private $headers;
private $statusCode;
/**
* @return mixed
*/
public function getBody() {
return $this->body;
}
/**
* @param mixed $body
*/
public function setBody($body) {
$this->body = $body;
}
/**
* @return mixed
*/
public function getHeaders() {
return $this->headers;
}
/**
* @param mixed $headers
*/
public function setHeaders($headers) {
$this->headers = $headers;
}
/**
* @return mixed
*/
public function getStatusCode() {
return $this->statusCode;
}
/**
* @param mixed $statusCode
*/
public function setStatusCode($statusCode) {
$this->statusCode = $statusCode;
}
}
abstract class wfWAFHTTPTransport {
private static $instance;
/**
* @return mixed
*/
public static function getInstance() {
if (!self::$instance) {
self::$instance = self::getFirstTransport();
}
return self::$instance;
}
/**
* @param mixed $instance
*/
public static function setInstance($instance) {
self::$instance = $instance;
}
/**
* @return wfWAFHTTPTransport
* @throws wfWAFHTTPTransportException
*/
public static function getFirstTransport() {
if (function_exists('curl_init')) {
return new wfWAFHTTPTransportCurl();
} else if (function_exists('file_get_contents')) {
return new wfWAFHTTPTransportStreams();
}
throw new wfWAFHTTPTransportException('No valid HTTP transport found.');
}
/**
* @param array $cookieArray
* @return string
*/
public static function buildCookieString($cookieArray) {
$cookies = '';
foreach ($cookieArray as $cookieName => $value) {
$cookies .= "$cookieName=" . urlencode($value) . '; ';
}
$cookies = rtrim($cookies);
return $cookies;
}
/**
* @param wfWAFHTTP $request
* @return wfWAFHTTPResponse|bool
*/
abstract public function send($request);
}
class wfWAFHTTPTransportCurl extends wfWAFHTTPTransport {
/**
* @todo Proxy settings
* @param wfWAFHTTP $request
* @return wfWAFHTTPResponse|bool
*/
public function send($request) {
$url = $request->getUrl();
if ($queryString = $request->getQueryString()) {
if (is_array($queryString)) {
$queryString = http_build_query($queryString, null, '&');
}
$url .= (wfWAFUtils::strpos($url, '?') !== false ? '&' : '?') . $queryString;
}
$ch = curl_init($url);
switch (wfWAFUtils::strtolower($request->getMethod())) {
case 'post':
curl_setopt($ch, CURLOPT_POST, 1);
break;
}
if ($body = $request->getBody()) {
curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
}
if ($auth = $request->getAuth()) {
curl_setopt($ch, CURLOPT_USERPWD, $auth['user'] . ':' . $auth['password']);
}
if ($cookies = $request->getCookies()) {
if (is_array($cookies)) {
$cookies = self::buildCookieString($cookies);
}
curl_setopt($ch, CURLOPT_COOKIE, $cookies);
}
if ($headers = $request->getHeaders()) {
if (is_array($headers)) {
$_headers = array();
foreach ($headers as $header => $value) {
$_headers[] = $header . ': ' . $value;
}
curl_setopt($ch, CURLOPT_HTTPHEADER, $_headers);
}
}
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 5);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_CAINFO, WFWAF_PATH . 'cacert.pem'); //On some systems curl uses an outdated root certificate chain file
$curlResponse = curl_exec($ch);
if ($curlResponse !== false) {
$headerSize = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$header = wfWAFUtils::substr($curlResponse, 0, $headerSize);
$body = wfWAFUtils::substr($curlResponse, $headerSize);
$response = new wfWAFHTTPResponse();
$response->setBody($body);
$response->setHeaders($header);
return $response;
}
return false;
}
}
class wfWAFHTTPTransportStreams extends wfWAFHTTPTransport {
/**
* @todo Implement wfWAFHTTPTransportStreams::send.
* @param wfWAFHTTP $request
* @return mixed
* @throws wfWAFHTTPTransportException
*/
public function send($request) {
$timeout = 5;
$url = $request->getUrl();
if ($queryString = $request->getQueryString()) {
if (is_array($queryString)) {
$queryString = http_build_query($queryString, null, '&');
}
$url .= (wfWAFUtils::strpos($url, '?') !== false ? '&' : '?') . $queryString;
}
$urlParsed = parse_url($request->getUrl());
$headers = "Host: $urlParsed[host]\r\n";
if ($auth = $request->getAuth()) {
$headers .= 'Authorization: Basic ' . base64_encode($auth['user'] . ':' . $auth['password']) . "\r\n";
}
if ($cookies = $request->getCookies()) {
if (is_array($cookies)) {
$cookies = self::buildCookieString($cookies);
}
$headers .= "Cookie: $cookies\r\n";
}
$hasUA = false;
if ($_headers = $request->getHeaders()) {
if (is_array($_headers)) {
foreach ($_headers as $header => $value) {
if (trim(wfWAFUtils::strtolower($header)) === 'user-agent') {
$hasUA = true;
}
$headers .= $header . ': ' . $value . "\r\n";
}
}
}
if (!$hasUA) {
$headers .= "User-Agent: Wordfence Streams UA\r\n";
}
$httpOptions = array(
'method' => $request->getMethod(),
'ignore_errors' => true,
'timeout' => $timeout,
'follow_location' => 1,
'max_redirects' => 5,
);
if (wfWAFUtils::strlen($request->getBody()) > 0) {
$httpOptions['content'] = $request->getBody();
$headers .= 'Content-Length: ' . wfWAFUtils::strlen($httpOptions['content']) . "\r\n";
}
$httpOptions['header'] = $headers;
$options = array(
wfWAFUtils::strtolower($urlParsed['scheme']) => $httpOptions,
);
$context = stream_context_create($options);
$stream = fopen($request->getUrl(), 'r', false, $context);
if (!is_resource($stream)) {
return false;
}
$metaData = stream_get_meta_data($stream);
// Get the HTTP response code
$httpResponse = array_shift($metaData['wrapper_data']);
if (preg_match_all('/(\w+\/\d\.\d) (\d{3})/', $httpResponse, $matches) !== false) {
// $protocol = $matches[1][0];
$status = (int) $matches[2][0];
} else {
// $protocol = null;
$status = null;
}
$responseObj = new wfWAFHTTPResponse();
$responseObj->setHeaders(join("\r\n", $metaData['wrapper_data']));
$responseObj->setBody(stream_get_contents($stream));
$responseObj->setStatusCode($status);
// Close the stream after use
fclose($stream);
return $responseObj;
}
}
class wfWAFHTTPTransportException extends wfWAFException {
}