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258
phpMyAdmin/libraries/classes/Utils/HttpRequest.php
Executable file
258
phpMyAdmin/libraries/classes/Utils/HttpRequest.php
Executable file
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<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* Hold the PhpMyAdmin\Utils\HttpRequest class
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*
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* @package PhpMyAdmin
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*/
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namespace PhpMyAdmin\Utils;
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/**
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* Handles HTTP requests
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*
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* @package PhpMyAdmin
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*/
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class HttpRequest
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{
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private $proxyUrl;
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private $proxyUser;
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private $proxyPass;
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/**
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* Constructor
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*/
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public function __construct()
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{
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global $cfg;
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$this->proxyUrl = $cfg['ProxyUrl'];
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$this->proxyUser = $cfg['ProxyUser'];
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$this->proxyPass = $cfg['ProxyPass'];
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}
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/**
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* Returns information with regards to handling the http request
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*
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* @param array $context Data about the context for which
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* to http request is sent
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*
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* @return array of updated context information
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*/
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private function handleContext(array $context)
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{
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if (strlen($this->proxyUrl) > 0) {
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$context['http'] = array(
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'proxy' => $this->proxyUrl,
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'request_fulluri' => true
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);
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if (strlen($this->proxyUser) > 0) {
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$auth = base64_encode(
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$this->proxyUser . ':' . $this->proxyPass
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);
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$context['http']['header'] .= 'Proxy-Authorization: Basic '
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. $auth . "\r\n";
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}
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}
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return $context;
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}
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/**
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* Creates HTTP request using curl
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*
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* @param mixed $response HTTP response
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* @param int $httpStatus HTTP response status code
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* @param bool $returnOnlyStatus If set to true, the method would only return response status
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*
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* @return string|null|bool
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*/
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private function response(
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$response,
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$httpStatus,
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$returnOnlyStatus
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) {
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if ($httpStatus == 404) {
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return false;
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}
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if ($httpStatus != 200) {
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return null;
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}
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if ($returnOnlyStatus) {
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return true;
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}
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return $response;
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}
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/**
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* Creates HTTP request using curl
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*
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* @param string $url Url to send the request
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* @param string $method HTTP request method (GET, POST, PUT, DELETE, etc)
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* @param bool $returnOnlyStatus If set to true, the method would only return response status
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* @param mixed $content Content to be sent with HTTP request
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* @param string $header Header to be set for the HTTP request
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* @param int $ssl SSL mode to use
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*
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* @return string|null|bool
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*/
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private function curl(
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$url,
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$method,
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$returnOnlyStatus = false,
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$content = null,
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$header = '',
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$ssl = 0
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) {
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$curlHandle = curl_init($url);
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if ($curlHandle === false) {
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return null;
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}
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$curlStatus = true;
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if (strlen($this->proxyUrl) > 0) {
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_PROXY, $this->proxyUrl);
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if (strlen($this->proxyUser) > 0) {
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$curlStatus &= curl_setopt(
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$curlHandle,
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CURLOPT_PROXYUSERPWD,
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$this->proxyUser . ':' . $this->proxyPass
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);
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}
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}
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_USERAGENT, 'phpMyAdmin');
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if ($method != "GET") {
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_CUSTOMREQUEST, $method);
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}
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if ($header) {
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_HTTPHEADER, array($header));
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}
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if ($method == "POST") {
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_POSTFIELDS, $content);
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}
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_SSL_VERIFYHOST, '2');
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_SSL_VERIFYPEER, '1');
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/**
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* Configure ISRG Root X1 to be able to verify Let's Encrypt SSL
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* certificates even without properly configured curl in PHP.
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*
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* See https://letsencrypt.org/certificates/
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*/
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$certsDir = dirname(__file__) . '/../../certs/';
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/* See code below for logic */
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if ($ssl == CURLOPT_CAPATH) {
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_CAPATH, $certsDir);
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} elseif ($ssl == CURLOPT_CAINFO) {
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_CAINFO, $certsDir . 'cacert.pem');
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}
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_RETURNTRANSFER, true);
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_FOLLOWLOCATION, 0);
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_TIMEOUT, 10);
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$curlStatus &= curl_setopt($curlHandle, CURLOPT_CONNECTTIMEOUT, 10);
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if (! $curlStatus) {
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return null;
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}
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$response = @curl_exec($curlHandle);
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if ($response === false) {
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/*
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* In case of SSL verification failure let's try configuring curl
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* certificate verification. Unfortunately it is tricky as setting
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* options incompatible with PHP build settings can lead to failure.
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*
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* So let's rather try the options one by one.
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*
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* 1. Try using system SSL storage.
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* 2. Try setting CURLOPT_CAINFO.
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* 3. Try setting CURLOPT_CAPATH.
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* 4. Fail.
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*/
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if (curl_getinfo($curlHandle, CURLINFO_SSL_VERIFYRESULT) != 0) {
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if ($ssl == 0) {
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$this->curl($url, $method, $returnOnlyStatus, $content, $header, CURLOPT_CAINFO);
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} elseif ($ssl == CURLOPT_CAINFO) {
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$this->curl($url, $method, $returnOnlyStatus, $content, $header, CURLOPT_CAPATH);
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}
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}
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return null;
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}
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$httpStatus = curl_getinfo($curlHandle, CURLINFO_HTTP_CODE);
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return $this->response($response, $httpStatus, $returnOnlyStatus);
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}
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/**
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* Creates HTTP request using file_get_contents
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*
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* @param string $url Url to send the request
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* @param string $method HTTP request method (GET, POST, PUT, DELETE, etc)
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* @param bool $returnOnlyStatus If set to true, the method would only return response status
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* @param mixed $content Content to be sent with HTTP request
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* @param string $header Header to be set for the HTTP request
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*
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* @return string|null|bool
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*/
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private function fopen(
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$url,
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$method,
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$returnOnlyStatus = false,
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$content = null,
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$header = ''
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) {
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$context = array(
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'http' => array(
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'method' => $method,
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'request_fulluri' => true,
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'timeout' => 10,
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'user_agent' => 'phpMyAdmin',
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'header' => "Accept: */*",
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)
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);
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if ($header) {
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$context['http']['header'] .= "\n" . $header;
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}
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if ($method == "POST") {
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$context['http']['content'] = $content;
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}
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$context = $this->handleContext($context);
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$response = @file_get_contents(
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$url,
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false,
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stream_context_create($context)
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);
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if (isset($http_response_header)) {
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preg_match("#HTTP/[0-9\.]+\s+([0-9]+)#", $http_response_header[0], $out);
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$httpStatus = intval($out[1]);
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return $this->response($response, $httpStatus, $returnOnlyStatus);
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}
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return null;
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}
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/**
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* Creates HTTP request
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*
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* @param string $url Url to send the request
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* @param string $method HTTP request method (GET, POST, PUT, DELETE, etc)
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* @param bool $returnOnlyStatus If set to true, the method would only return response status
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* @param mixed $content Content to be sent with HTTP request
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* @param string $header Header to be set for the HTTP request
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*
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* @return string|null|bool
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*/
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public function create(
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$url,
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$method,
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$returnOnlyStatus = false,
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$content = null,
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$header = ''
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) {
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if (function_exists('curl_init')) {
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return $this->curl($url, $method, $returnOnlyStatus, $content, $header);
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} elseif (ini_get('allow_url_fopen')) {
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return $this->fopen($url, $method, $returnOnlyStatus, $content, $header);
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}
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return null;
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}
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}
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