FacebookCurlHttpClient.php

<?php

namespace TobiasTom;

use Facebook\HttpClients\FacebookCurl;

class FacebookCurlHttpClient extends \Facebook\HttpClients\FacebookCurlHttpClient {
	protected $pemFile;

	public function __construct( FacebookCurl $facebookCurl = null, $pemFile = null ) {
		parent::__construct( $facebookCurl );

		if ( $pemFile ) {
			$this->pemFile = tempnam( sys_get_temp_dir(), 'facebook_' );
			copy( $pemFile, $this->pemFile );
		}
	}

	public function __destruct() {
		if ( $this->pemFile ) {
			unlink( $this->pemFile );
		}
	}

	public function openConnection($url, $method, $body, array $headers, $timeOut) {
		$result = parent::openConnection( $url, $method, $body, $headers, $timeOut );

		if ( $this->pemFile ) {
			$this->facebookCurl->setopt( CURLOPT_CAINFO, $this->pemFile );
		}

		return $result;
	}
}