make formdata available in params

Author: John-Weak

api/api.js

@@ -362,8 +362,13 @@ plugins.connectToAllDatabases().then(function() {
                         }
                     }
                     params.files = files;
+                    let formDataUrl = [];
                     for (const i in fields) {
                         params.qstring[i] = fields[i];
+                        formDataUrl.push(`${i}=${fields[i]}`);
+                    }
+                    if (formDataUrl.length) {
+                        params.formDataUrl = formDataUrl.join('&');
                     }
                     if (!params.apiPath) {
                         processRequest(params);

api/utils/requestProcessor.js

@@ -3098,7 +3098,13 @@ const checksumSaltVerification = (params) => {
         payloads.push(params.href.substr(params.fullPath.length + 1));
 
         if (params.req.method.toLowerCase() === 'post') {
-            payloads.push(params.req.body);
+            // Check if we have 'multipart/form-data'
+            if (params.formDataUrl) {
+                payloads.push(params.formDataUrl);
+            }
+            else {
+                payloads.push(params.req.body);
+            }
         }
         if (typeof params.qstring.checksum !== "undefined") {
             for (let i = 0; i < payloads.length; i++) {