Limit max file size to 1 GiB

To prevent OOM due to wasm (not 64) having a hard 4gb memory limit. Better safe than corrupt.

Author: HACKERALERT

index.html

@@ -120,6 +120,13 @@
 			};
 			document.getElementById("fin").onchange = function(){
 				if(this.files.length>0){
+					if (this.files[0].size > 1073741824) { // 1 GiB
+						document.getElementById("status").innerHTML = "File too large! Only files up to 1 GiB are supported.";
+						document.getElementById("status").style.color = "#db2828";
+						setTimeout(() => {
+							window.location.reload();
+						}, 3000);
+					}
 					document.querySelector("body > div > div > p").innerHTML = this.files[0].name;
 					if(this.files[0].name.endsWith(".pcv")){
 						document.getElementById("start").value = "Decrypt";
@@ -212,4 +219,4 @@
 		WebAssembly.instantiateStreaming(fetch("/main.wasm"), go.importObject).then(result => go.run(result.instance));
 	</script>
 </body>
-</html>
+</html>