From 4b8a9a5189a625bf99fedec7fd31f6e146410a14 Mon Sep 17 00:00:00 2001
From: emkael <emkael@tlen.pl>
Date: Thu, 26 Apr 2018 01:00:12 +0200
Subject: Update FB API library

---
 .../HttpClients/FacebookCurlHttpClient.php         | 57 ++--------------------
 1 file changed, 5 insertions(+), 52 deletions(-)

(limited to 'lib/facebook-graph-sdk/src/Facebook/HttpClients/FacebookCurlHttpClient.php')

diff --git a/lib/facebook-graph-sdk/src/Facebook/HttpClients/FacebookCurlHttpClient.php b/lib/facebook-graph-sdk/src/Facebook/HttpClients/FacebookCurlHttpClient.php
index 955ac06..9516cc8 100644
--- a/lib/facebook-graph-sdk/src/Facebook/HttpClients/FacebookCurlHttpClient.php
+++ b/lib/facebook-graph-sdk/src/Facebook/HttpClients/FacebookCurlHttpClient.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Copyright 2014 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
  *
  * You are hereby granted a non-exclusive, worldwide, royalty-free license to
  * use, copy, modify, and distribute this software in source code or binary
@@ -53,16 +53,6 @@ class FacebookCurlHttpClient implements FacebookHttpClientInterface
      */
     protected $facebookCurl;
 
-    /**
-     * @const Curl Version which is unaffected by the proxy header length error.
-     */
-    const CURL_PROXY_QUIRK_VER = 0x071E00;
-
-    /**
-     * @const "Connection Established" header text
-     */
-    const CONNECTION_ESTABLISHED = "HTTP/1.0 200 Connection established\r\n\r\n";
-
     /**
      * @param FacebookCurl|null Procedural curl as object
      */
@@ -108,7 +98,7 @@ class FacebookCurlHttpClient implements FacebookHttpClientInterface
             CURLOPT_URL => $url,
             CURLOPT_CONNECTTIMEOUT => 10,
             CURLOPT_TIMEOUT => $timeOut,
-            CURLOPT_RETURNTRANSFER => true, // Follow 301 redirects
+            CURLOPT_RETURNTRANSFER => true, // Return response as string
             CURLOPT_HEADER => true, // Enable header processing
             CURLOPT_SSL_VERIFYHOST => 2,
             CURLOPT_SSL_VERIFYPEER => true,
@@ -164,47 +154,10 @@ class FacebookCurlHttpClient implements FacebookHttpClientInterface
      */
     public function extractResponseHeadersAndBody()
     {
-        $headerSize = $this->getHeaderSize();
-
-        $rawHeaders = mb_substr($this->rawResponse, 0, $headerSize);
-        $rawBody = mb_substr($this->rawResponse, $headerSize);
+        $parts = explode("\r\n\r\n", $this->rawResponse);
+        $rawBody = array_pop($parts);
+        $rawHeaders = implode("\r\n\r\n", $parts);
 
         return [trim($rawHeaders), trim($rawBody)];
     }
-
-    /**
-     * Return proper header size
-     *
-     * @return integer
-     */
-    private function getHeaderSize()
-    {
-        $headerSize = $this->facebookCurl->getinfo(CURLINFO_HEADER_SIZE);
-        // This corrects a Curl bug where header size does not account
-        // for additional Proxy headers.
-        if ($this->needsCurlProxyFix()) {
-            // Additional way to calculate the request body size.
-            if (preg_match('/Content-Length: (\d+)/', $this->rawResponse, $m)) {
-                $headerSize = mb_strlen($this->rawResponse) - $m[1];
-            } elseif (stripos($this->rawResponse, self::CONNECTION_ESTABLISHED) !== false) {
-                $headerSize += mb_strlen(self::CONNECTION_ESTABLISHED);
-            }
-        }
-
-        return $headerSize;
-    }
-
-    /**
-     * Detect versions of Curl which report incorrect header lengths when
-     * using Proxies.
-     *
-     * @return boolean
-     */
-    private function needsCurlProxyFix()
-    {
-        $ver = $this->facebookCurl->version();
-        $version = $ver['version_number'];
-
-        return $version < self::CURL_PROXY_QUIRK_VER;
-    }
 }
-- 
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