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-rw-r--r--webrtc/src/Server.ts64
1 files changed, 52 insertions, 12 deletions
diff --git a/webrtc/src/Server.ts b/webrtc/src/Server.ts
index 5b76759a..67f60f9f 100644
--- a/webrtc/src/Server.ts
+++ b/webrtc/src/Server.ts
@@ -5,8 +5,8 @@ import OPCodeHandlers, { Payload } from "./opcodes";
 import { setHeartbeat } from "./util";
 import * as mediasoup from "mediasoup";
 import { types as MediasoupTypes } from "mediasoup";
-
 import udp from "dgram";
+import sodium from "libsodium-wrappers";
 
 var port = Number(process.env.PORT);
 if (isNaN(port)) port = 3004;
@@ -47,19 +47,59 @@ export class Server {
 			});
 		});
 
-		// this.testUdp.bind(50001);
-		// this.testUdp.on("message", (msg, rinfo) => {
-		// 	if (msg[0] === 0 && msg[1] === 1 && msg[2] === 0) { //idk stun?
-
-		// 	}
-		// })
+		this.testUdp.bind(50001);
+		this.testUdp.on("message", (msg, rinfo) => {
+			//random key from like, the libsodium examples on npm lol
+			const decryptKey = sodium.from_hex("724b092810ec86d7e35c9d067702b31ef90bc43a7b598626749914d6a3e033ed");
+
+			//give me my remote port?
+			if (sodium.to_hex(msg) == "0001004600000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000") {
+				this.testUdp.send(Buffer.from([rinfo.port, 0]), rinfo.port, rinfo.address);
+				console.log(`got magic packet to send remote port? ${rinfo.address}:${rinfo.port}`);
+				return;
+			}
+
+			//Hello
+			if (sodium.to_hex(msg) == "0100000000000000") {
+				console.log(`[UDP] client helloed`);
+				return;
+			}
+
+			const nonce = Buffer.concat([msg.slice(-4), Buffer.from("\x00".repeat(20))]);
+			console.log(`[UDP] nonce for this message: ${nonce}`);
+
+			console.log(sodium.to_hex(msg));
+			if (sodium.to_hex(msg).indexOf("80c8000600000001") == 0) {
+				//call status
+				const encrypted = msg.slice(8, -4);
+				const currentPacket = msg.slice(-4);
+				console.log(`[UDP] Current packet: ${currentPacket}`);
+				try {
+					console.log(`[UDP] Encrypted bytes: ${encrypted.toString("base64")}`);
+					const decrypted = sodium.crypto_secretbox_open_easy(encrypted, nonce, decryptKey);
+					console.log("[UDP] [ call status ]" + decrypted);
+				}
+				catch (e) {
+					console.error(`[UDP] decrypt failure\n${e}\n${encrypted.toString("base64")}`);
+				}
+				return;
+			}
+
+			try {
+				const decrypted = sodium.crypto_secretbox_open_easy(msg, nonce, decryptKey);
+				console.log("[UDP] " + decrypted);
+			}
+			catch (e) {
+				console.error(`[UDP] decrypt failure\n${e}\n${msg.toString("base64")}`);
+			}
+		});
 	}
 
 	async listen(): Promise<void> {
 		// @ts-ignore
 		await initDatabase();
 		await Config.init();
-		await this.createWorkers();
+		//await this.createWorkers();
 		console.log("[DB] connected");
 		console.log(`[WebRTC] online on 0.0.0.0:${port}`);
 	}
@@ -86,17 +126,17 @@ export class Server {
 
 					transport.on('dtlsstatechange', (dtlsstate) => {
 						console.log(dtlsstate);
-					})
+					});
 
 					transport.on("sctpstatechange", (sctpstate) => {
-						console.log(sctpstate)
-					})
+						console.log(sctpstate);
+					});
 
 					router.observer.on("newrtpobserver", (rtpObserver: MediasoupTypes.RtpObserver) => {
 						console.log("new RTP observer created [id:%s]", rtpObserver.id);
 
 						// rtpObserver.observer.on("")
-					})
+					});
 
 					transport.on("connect", () => {
 						console.log("transport connect");