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Prevent replay

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This commit is contained in:
jude 2023-03-07 15:43:47 +00:00
parent c0f2c4bbef
commit 4a55f5c11f
3 changed files with 10 additions and 0 deletions
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8
static/js/modules/interface/main.js
View File

@ -49,6 +49,14 @@ document.addEventListener("DOMContentLoaded", () => {
window.console.error(`Signature invalid! Ignoring packet ${data.id}.`); window.console.error(`Signature invalid! Ignoring packet ${data.id}.`);
return; return;
} }
// check if the packet is replayed.
if (data.timestamp <= sender.lastPacket) {
window.console.error(`Replay detected! Ignoring packet ${data.id}.`);
return;
}
sender.lastPacket = data.timestamp;
} }
switch (data.type) { switch (data.type) {

1
static/js/modules/interface/packet.js
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@ -5,6 +5,7 @@ export class Packet {
return { return {
type: name, type: name,
id: window.crypto.randomUUID(), id: window.crypto.randomUUID(),
timestamp: Date.now(),
author: ID, author: ID,
}; };
} }

1
static/js/modules/interface/player.js
View File

@ -19,6 +19,7 @@ export class Player {
this.id = id; this.id = id;
this.ready = false; this.ready = false;
this.rsaPubKey = RsaPubKey.fromJSON(pubkey); this.rsaPubKey = RsaPubKey.fromJSON(pubkey);
this.lastPacket = 0;
// Data which is reset every turn // Data which is reset every turn
this.isPlaying = false; this.isPlaying = false;