diff --git a/shared/fileinfo.php b/shared/fileinfo.php
new file mode 100644
index 0000000..acb1141
--- /dev/null
+++ b/shared/fileinfo.php
@@ -0,0 +1,94 @@
+<?php
+/*
+Copyright 2022 UUP dump API authors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+require_once dirname(__FILE__).'/utils.php';
+
+function uupApiGetFileinfoDirs() {
+    $dirs = [];
+    $dirs['fileinfo'] = 'fileinfo';
+    $dirs['fileinfoMeta'] = $dirs['fileinfo'].'/metadata';
+    $dirs['fileinfoData'] = $dirs['fileinfo'].'/full';
+
+    foreach($dirs as $dir) {
+        if(!file_exists($dir)) mkdir($dir);
+    }
+
+    return $dirs;
+}
+
+function uupApiGetFileinfoName($updateId, $meta = false) {
+    $fileName = $updateId.'.json';
+    $dirs = uupApiGetFileinfoDirs();
+
+    $fileinfoMeta = $dirs['fileinfoMeta'].'/'.$fileName;
+    $fileinfoData = $dirs['fileinfoData'].'/'.$fileName;
+
+    return $meta ? $fileinfoMeta : $fileinfoData;
+}
+
+function uupApiFileInfoExists($updateId) {
+    return file_exists(uupApiGetFileinfoName($updateId));
+}
+
+function uupApiWriteFileinfoMeta($updateId, $info) {
+    if(isset($info['files']))
+        unset($info['files']);
+
+    $file = uupApiGetFileinfoName($updateId, true);
+    return uupApiWriteJson($file, $info);
+}
+
+function uupApiWriteFileinfo($updateId, $info) {
+    $file = uupApiGetFileinfoName($updateId);
+
+    if(uupApiWriteJson($file, $info) === false)
+        return false;
+
+    return uupApiWriteFileinfoMeta($updateId, $info);
+}
+
+function uupApiReadFileinfoMeta($updateId) {
+    $file = uupApiGetFileinfoName($updateId, true);
+
+    if(file_exists($file))
+        return uupApiReadJson($file);
+
+    $info = uupApiReadFileinfo($updateId, false);
+    if($info === false)
+        return false;
+
+    if(isset($info['files']))
+        unset($info['files']);
+
+    if(uupApiWriteFileinfoMeta($updateId, $info) === false)
+        return false;
+
+    return $info;
+}
+
+function uupApiReadFileinfo($updateId, $meta = false) {
+    if(!uupApiFileInfoExists($updateId))
+        return false;
+
+    if($meta === true)
+        return uupApiReadFileinfoMeta($updateId);
+
+    $file = uupApiGetFileinfoName($updateId);
+    $info = uupApiReadJson($file);
+
+    return $info;
+}