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Added save file tempering "protection"

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This commit is contained in:
Renan LE CARO 2025-03-17 19:02:19 +01:00
parent 659d79bcd0
commit efa634cd8f
2 changed files with 3773 additions and 3 deletions
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3763
dist/index.html vendored
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File diff suppressed because one or more lines are too long

13
src/game.ts
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@ -51,6 +51,7 @@ import {
closeModal, closeModal,
} from "./asyncAlert"; } from "./asyncAlert";
import { isOptionOn, options, toggleOption } from "./options"; import { isOptionOn, options, toggleOption } from "./options";
import {hashCode} from "./getLevelBackground";
export function play() { export function play() {
if (gameState.running) return; if (gameState.running) return;
@ -662,6 +663,7 @@ async function openSettingsPanel() {
localStorageContent[key] = value; localStorageContent[key] = value;
} }
const signedPayload=JSON.stringify(localStorageContent)
const dlLink = document.createElement("a"); const dlLink = document.createElement("a");
dlLink.setAttribute( dlLink.setAttribute(
@ -671,7 +673,8 @@ async function openSettingsPanel() {
JSON.stringify({ JSON.stringify({
fileType: "B71-save-file", fileType: "B71-save-file",
appVersion, appVersion,
localStorageContent, signedPayload,
key: hashCode('Security by obscurity, but really the game is oss so eh'+signedPayload)
}), }),
), ),
); );
@ -722,7 +725,7 @@ async function openSettingsPanel() {
const { const {
fileType, fileType,
appVersion: fileVersion, appVersion: fileVersion,
localStorageContent, signedPayload,key
} = JSON.parse(content); } = JSON.parse(content);
if (fileType !== "B71-save-file") if (fileType !== "B71-save-file")
throw new Error("Not a B71 save file"); throw new Error("Not a B71 save file");
@ -732,6 +735,12 @@ async function openSettingsPanel() {
fileVersion + fileVersion +
" or newer.", " or newer.",
); );
if(key!== hashCode('Security by obscurity, but really the game is oss so eh'+signedPayload)){
throw new Error("Key does not match content.")
}
const localStorageContent=JSON.parse(signedPayload)
localStorage.clear(); localStorage.clear();
for (let key in localStorageContent) { for (let key in localStorageContent) {
localStorage.setItem(key, localStorageContent[key]); localStorage.setItem(key, localStorageContent[key]);