fixes #3325 add possibility to post content via Http class, needed for premium plugins

core/Http.php

@@ -125,6 +125,7 @@ class Http
      * @param string $httpMethod The HTTP method to use. Defaults to `'GET'`.
      * @param string $httpUsername HTTP Auth username
      * @param string $httpPassword HTTP Auth password
+     * @param array|string $requestBody If $httpMethod is 'POST' this may accept an array of variables or a string that needs to be posted
      *
      * @throws Exception
      * @return bool  true (or string/array) on success; false on HTTP response error code (1xx or 4xx)
@@ -143,7 +144,8 @@ class Http
         $getExtendedInfo = false,
         $httpMethod = 'GET',
         $httpUsername = null,
-        $httpPassword = null
+        $httpPassword = null,
+        $requestBody = null
     ) {
         if ($followDepth > 5) {
             throw new Exception('Too many redirects (' . $followDepth . ')');
@@ -152,6 +154,10 @@ class Http
         $contentLength = 0;
         $fileLength = 0;
 
+        if (!empty($requestBody) && is_array($requestBody)) {
+            $requestBody = http_build_query($requestBody);
+        }
+
         // Piwik services behave like a proxy, so we should act like one.
         $xff = 'X-Forwarded-For: '
             . (isset($_SERVER['HTTP_X_FORWARDED_FOR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']) ? $_SERVER['HTTP_X_FORWARDED_FOR'] . ',' : '')
@@ -251,10 +257,17 @@ class Http
                 . $xff . "\r\n"
                 . $via . "\r\n"
                 . $rangeHeader
-                . "Connection: close\r\n"
-                . "\r\n";
+                . "Connection: close\r\n";
             fwrite($fsock, $requestHeader);
 
+            if (strtolower($httpMethod) === 'post' && !empty($requestBody)) {
+                fwrite($fsock, self::buildHeadersForPost($requestBody));
+                fwrite($fsock, "\r\n");
+                fwrite($fsock, $requestBody);
+            } else {
+                fwrite($fsock, "\r\n");
+            }
+
             $streamMetaData = array('timed_out' => false);
             @stream_set_blocking($fsock, true);
 
@@ -421,6 +434,14 @@ class Http
                     }
                 }
 
+                if (strtolower($httpMethod) === 'post' && !empty($requestBody)) {
+                    $postHeader  = self::buildHeadersForPost($requestBody);
+                    $postHeader .= "\r\n";
+                    $stream_options['http']['method']  = 'POST';
+                    $stream_options['http']['header'] .= $postHeader;
+                    $stream_options['http']['content'] = $requestBody;
+                }
+
                 $ctx = stream_context_create($stream_options);
             }
 
@@ -499,6 +520,11 @@ class Http
                 @curl_setopt($ch, CURLOPT_NOBODY, true);
             }
 
+            if (strtolower($httpMethod) === 'post' && !empty($requestBody)) {
+                curl_setopt($ch, CURLOPT_POST, 1);
+                curl_setopt($ch, CURLOPT_POSTFIELDS, $requestBody);
+            }
+
             if (!empty($httpUsername) && !empty($httpPassword)) {
                 $curl_options += array(
                     CURLOPT_USERPWD => $httpUsername . ':' . $httpPassword,
@@ -596,6 +622,14 @@ class Http
         }
     }
 
+    private static function buildHeadersForPost($requestBody)
+    {
+        $postHeader  = "Content-Type: application/x-www-form-urlencoded\r\n";
+        $postHeader .= "Content-Length: " . strlen($requestBody) . "\r\n";
+
+        return $postHeader;
+    }
+
     /**
      * Downloads the next chunk of a specific file. The next chunk's byte range
      * is determined by the existing file's size and the expected file size, which