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admin/phpMyAdmin/libraries/classes/Utils/HttpRequest.php
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308
admin/phpMyAdmin/libraries/classes/Utils/HttpRequest.php
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<?php
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declare(strict_types=1);
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namespace PhpMyAdmin\Utils;
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use Composer\CaBundle\CaBundle;
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use function base64_encode;
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use function curl_exec;
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use function curl_getinfo;
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use function curl_init;
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use function curl_setopt;
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use function file_get_contents;
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use function function_exists;
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use function getenv;
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use function ini_get;
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use function intval;
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use function is_array;
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use function is_dir;
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use function parse_url;
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use function preg_match;
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use function stream_context_create;
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use function strlen;
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use const CURL_IPRESOLVE_V4;
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use const CURLINFO_HTTP_CODE;
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use const CURLOPT_CAINFO;
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use const CURLOPT_CAPATH;
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use const CURLOPT_CONNECTTIMEOUT;
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use const CURLOPT_CUSTOMREQUEST;
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use const CURLOPT_FOLLOWLOCATION;
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use const CURLOPT_HTTPHEADER;
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use const CURLOPT_IPRESOLVE;
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use const CURLOPT_POSTFIELDS;
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use const CURLOPT_PROXY;
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use const CURLOPT_PROXYUSERPWD;
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use const CURLOPT_RETURNTRANSFER;
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use const CURLOPT_SSL_VERIFYHOST;
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use const CURLOPT_SSL_VERIFYPEER;
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use const CURLOPT_TIMEOUT;
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use const CURLOPT_USERAGENT;
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use const PHP_SAPI;
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/**
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* Handles HTTP requests
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*/
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class HttpRequest
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{
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/** @var string */
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private $proxyUrl;
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/** @var string */
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private $proxyUser;
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/** @var string */
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private $proxyPass;
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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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public static function setProxySettingsFromEnv(): void
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{
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global $cfg;
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$httpProxy = getenv('http_proxy');
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$urlInfo = parse_url((string) $httpProxy);
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if (PHP_SAPI !== 'cli' || ! is_array($urlInfo)) {
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return;
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}
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$cfg['ProxyUrl'] = ($urlInfo['host'] ?? '')
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. (isset($urlInfo['port']) ? ':' . $urlInfo['port'] : '');
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$cfg['ProxyUser'] = $urlInfo['user'] ?? '';
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$cfg['ProxyPass'] = $urlInfo['pass'] ?? '';
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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'] = [
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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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$auth = base64_encode($this->proxyUser . ':' . $this->proxyPass);
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$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 $returnOnlyStatus If set to true, the method would only return response status
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*
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* @return string|bool|null
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*/
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private function response(
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$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 $header Header to be set for the HTTP request
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*
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* @return string|bool|null
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*/
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private function curl(
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$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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) {
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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 = 1;
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if (strlen($this->proxyUrl) > 0) {
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$curlStatus &= (int) curl_setopt($curlHandle, CURLOPT_PROXY, $this->proxyUrl);
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if (strlen($this->proxyUser) > 0) {
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$curlStatus &= (int) curl_setopt(
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$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 &= (int) curl_setopt($curlHandle, CURLOPT_USERAGENT, 'phpMyAdmin');
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if ($method !== 'GET') {
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$curlStatus &= (int) curl_setopt($curlHandle, CURLOPT_CUSTOMREQUEST, $method);
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}
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if ($header) {
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$curlStatus &= (int) curl_setopt($curlHandle, CURLOPT_HTTPHEADER, [$header]);
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}
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if ($method === 'POST') {
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$curlStatus &= (int) curl_setopt($curlHandle, CURLOPT_POSTFIELDS, $content);
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}
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$curlStatus &= (int) curl_setopt($curlHandle, CURLOPT_SSL_VERIFYHOST, 2);
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$curlStatus &= (int) curl_setopt($curlHandle, CURLOPT_SSL_VERIFYPEER, true);
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$caPathOrFile = CaBundle::getSystemCaRootBundlePath();
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if (is_dir($caPathOrFile)) {
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$curlStatus &= (int) curl_setopt($curlHandle, CURLOPT_CAPATH, $caPathOrFile);
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} else {
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$curlStatus &= (int) curl_setopt($curlHandle, CURLOPT_CAINFO, $caPathOrFile);
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}
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$curlStatus &= (int) curl_setopt($curlHandle, CURLOPT_RETURNTRANSFER, true);
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$curlStatus &= (int) curl_setopt($curlHandle, CURLOPT_FOLLOWLOCATION, 0);
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$curlStatus &= (int) curl_setopt($curlHandle, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
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$curlStatus &= (int) curl_setopt($curlHandle, CURLOPT_TIMEOUT, 10);
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$curlStatus &= (int) 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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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 $header Header to be set for the HTTP request
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*
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* @return string|bool|null
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*/
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private function fopen(
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$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 = [
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'http' => [
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'method' => $method,
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'request_fulluri' => true,
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'timeout' => 10,
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'user_agent' => 'phpMyAdmin',
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'header' => 'Accept: */*',
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],
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'ssl' => [
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'verify_peer' => true,
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'verify_peer_name' => true,
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],
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];
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if ($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'] = $content;
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}
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$caPathOrFile = CaBundle::getSystemCaRootBundlePath();
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if (is_dir($caPathOrFile)) {
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$context['ssl']['capath'] = $caPathOrFile;
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} else {
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$context['ssl']['cafile'] = $caPathOrFile;
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}
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$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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return null;
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}
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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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/**
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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 $header Header to be set for the HTTP request
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*
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* @return string|bool|null
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*/
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public function create(
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$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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}
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if (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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