avoid crash when url is invalid

Dockerfile

@@ -12,12 +12,13 @@ RUN apk add --no-cache \
 COPY package.json package-lock.json ./
 RUN npm ci
 
+# Delete dev deps
+RUN apk del python3 g++ make cairo-dev pango-dev
+
 # Copy required files for server
+COPY ./js ./js
 COPY ./src ./src
 COPY ./api ./api
-COPY ./js ./js
-
-RUN apk del python3 g++ make cairo-dev pango-dev
 
 EXPOSE 8080
 CMD [ "node", "api/index.js" ]

api/index.js

@@ -20,7 +20,9 @@ const server = http.createServer(async (req, res) => {
     const url = Buffer.concat(buffers).toString();
 
     const data = signer.sign(url);
-    console.log("Sent data from request with url: " + url);
+    if (data !== null) {
+      console.log("Sending data from request with url: " + url);
+    }
     res.write(Utils.makePayload(data, signer.navigator()));
   } else {
     res.write(

src/Signer.js

@@ -90,21 +90,27 @@ class Signer {
   /**
    * Sign a TikTok URL
    * @param {string} url_str Unsigned URL
-   * @returns Object with signed data
+   * @returns Object with signed data or null if error
    */
   sign(url_str) {
-    const url = new URL(url_str);
-    const signature = this.signature(url.toString());
-    url.searchParams.append('_signature', signature);
-    const bogus = this.bogus(url.searchParams.toString());
-    url.searchParams.append('X-Bogus', bogus);
-    const xttparams = this.xttparams(url.searchParams.toString());
-    return {
-      signature: signature,
-      signed_url: url.toString(),
-      "x-tt-params": xttparams,
-      "X-Bogus": bogus
-    };
+    try {
+      const url = new URL(url_str);
+      const signature = this.signature(url.toString());
+      url.searchParams.append('_signature', signature);
+      const bogus = this.bogus(url.searchParams.toString());
+      url.searchParams.append('X-Bogus', bogus);
+      const xttparams = this.xttparams(url.searchParams.toString());
+      return {
+        signature: signature,
+        signed_url: url.toString(),
+        "x-tt-params": xttparams,
+        "X-Bogus": bogus
+      };
+    } catch (_e) {
+      return null;
+    } finally {
+
+    }
   }
 }
 

src/Utils.js

@@ -1,5 +1,12 @@
 class Utils {
   static makePayload(data, navigator) {
+    if (data === null) {
+      return JSON.stringify({
+        status: "error",
+        data: "There was an error processing your request! Is your URL valid?"
+      })
+    }
+
     return JSON.stringify({
       status: "ok",
       data: {