moved to new repo

modules/stream/manage.js

@@ -0,0 +1,45 @@
+import NodeCache from "node-cache";
+
+import { UUID, encrypt } from "../sub/crypto.js";
+import { streamLifespan } from "../config.js";
+
+const streamCache = new NodeCache({ stdTTL: streamLifespan, checkperiod: 120 });
+
+export function createStream(obj) {
+    let streamUUID = UUID(),
+        exp = Math.floor(new Date().getTime()) + streamLifespan,
+        ghmac = encrypt(`${streamUUID},${obj.url},${obj.ip},${exp}`, obj.salt),
+        iphmac = encrypt(`${obj.ip}`, obj.salt);
+
+    streamCache.set(streamUUID, {
+        id: streamUUID,
+        service: obj.service,
+        type: obj.type,
+        urls: obj.urls,
+        filename: obj.filename,
+        hmac: ghmac,
+        ip: iphmac,
+        exp: exp,
+        isAudioOnly: obj.isAudioOnly ? true : false,
+        time: obj.time
+    });
+    return `${process.env.selfURL}api/stream?t=${streamUUID}&e=${exp}&h=${ghmac}`;
+}
+
+export function verifyStream(ip, id, hmac, exp, salt) {
+    try {
+        let streamInfo = streamCache.get(id);
+        if (streamInfo) {
+            let ghmac = encrypt(`${id},${streamInfo.url},${ip},${exp}`, salt);
+            if (hmac == ghmac && encrypt(`${ip}`, salt) == streamInfo.ip && ghmac == streamInfo.hmac && exp > Math.floor(new Date().getTime()) && exp == streamInfo.exp) {
+                return streamInfo;
+            } else {
+                return { error: 'Unauthorized', status: 401 };
+            }
+        } else {
+            return { error: 'this stream token does not exist', status: 400 };
+        }
+    } catch (e) {
+        return { status: 500, body: { status: "error", text: "Internal Server Error" } };
+    }
+}