Maximum Upload

fonction.php

@@ -0,0 +1,39 @@
+<?php
+function formatBytes($size, $precision = 2)
+{
+    $base = log($size, 1024);
+    $suffixes = array('', 'KiB', 'MiB', 'GiB', 'TiB');   
+
+    return round(pow(1024, $base - floor($base)), $precision) .' '. $suffixes[floor($base)];
+}
+
+function convertToBytes(string $from): ?int {
+    $units = ['B', 'KB', 'MB', 'GB', 'TB', 'PB'];
+    $number = substr($from, 0, -2);
+    $suffix = strtoupper(substr($from,-2));
+
+    //B or no suffix
+    if(is_numeric(substr($suffix, 0, 1))) {
+        return preg_replace('/[^\d]/', '', $from);
+    }
+
+    $exponent = array_flip($units)[$suffix] ?? null;
+    if($exponent === null) {
+        return null;
+    }
+
+    return $number * (1024 ** $exponent);
+}
+
+function folderSize($dir)
+{
+    $size = 0;
+
+    foreach (glob(rtrim($dir, '/').'/*', GLOB_NOSORT) as $each) {
+        $size += is_file($each) ? filesize($each) : folderSize($each);
+    }
+
+    return $size;
+}
+
+?>

upload.php

@@ -4,13 +4,16 @@ error_reporting(E_ALL);
 ini_set('display_errors', TRUE);
 ini_set('display_startup_errors', TRUE);
 
+include 'fonction.php';
+
+$max_size = convertToBytes('2GB');
+
 $root = $_SERVER["DOCUMENT_ROOT"];
 
 $target_dir = "$root/uploads/";
 
 if(! isset($_FILES["file"])) {
 	header("HTTP/1.1 400 No file Upload");
-	//trigger_error("No file Upload",E_USER_ERROR);
 	exit();
 }
 
@@ -18,9 +21,15 @@ $file = $_FILES["file"];
 
 $name = basename($file["name"]);
 
+$size = basename($file["size"]);
+
+if ((folderSize($target_dir) + $size) > $max_size) {
+	header("HTTP/1.1 400 " . $name . " file too large");
+	exit();
+}
 
 if (! extension_loaded('mbstring')) {
-	header("HTTP/1.1 400 Bad encode");
+	header("HTTP/1.1 500 php module missing");
 	exit();
 }
 
@@ -29,9 +38,6 @@ if(! mb_check_encoding($name)) {
 	exit();
 }
 
-
-$size = basename($file["size"]);
-
 $target_file = $target_dir.$name;
 
 // Check if file already exists
@@ -48,11 +54,4 @@ else {
 	}
 }
 
-function formatBytes($size, $precision = 2)
-{
-    $base = log($size, 1024);
-    $suffixes = array('', 'KiB', 'MiB', 'GiB', 'TiB');   
-
-    return round(pow(1024, $base - floor($base)), $precision) .' '. $suffixes[floor($base)];
-}
 ?>