fixing file uploads on windows

Author: unknown

PHPWebDriver/WebDriverBase.php

@@ -147,7 +147,15 @@ protected function curl(http://github.com/$http_method,%3C/div%3E%3C/code%3E%3C/div%3E%3C/td%3E%3C/tr%3E%3Ctr%20class=%22diff-line-row%22%3E%3Ctd%20data-grid-cell-id=%22diff-0fbc28535908588d0e48a4b17fa7080b021a0e5c8b29e5a7a14e3d93cd622f6d-147-147-0%22%20data-selected=%22false%22%20role=%22gridcell%22%20style=%22background-color:var(--bgColor-default);text-align:center" tabindex="-1" valign="top" class="focusable-grid-cell diff-line-number position-relative diff-line-number-neutral left-side">147
       curl_setopt($curl, CURLOPT_POST, true);
       if ($params && is_array($params)) {
-        curl_setopt($curl, CURLOPT_POSTFIELDS, str_replace('\\\\u', '\\u', json_encode($params)));
+        // hurray for magic strings!
+        // due to how the remote server handles upload, they can stomp on special
+        // unicode denoting characters in the json. so, unescape \uXXXX in the json
+        // and then re-escape it if it is really \upload which is the prefix for temp
+        // dir where files uploaded get stashed.
+        $encoded_params = json_encode($params);
+        $encoded_params = str_replace('\\\\u', '\\u', $encoded_params);
+        $encoded_params = str_replace('\\upload', '\\\\upload', $encoded_params);
+        curl_setopt($curl, CURLOPT_POSTFIELDS, $encoded_params);
       }  else {
         curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-length: 0'));
       }