Add JRPC API, reworked Login and User pages

Frontend/src/pages/popup/main.ts

@@ -84,9 +84,25 @@ async function onMessage(msg: MessageEvent<any>) {
       const url = new URL(msg.origin);
       setAppName(url.hostname);
 
+      if (!msg.data.client_id) {
+         alert("The site requesting the login is not valid");
+         window.close();
+         return;
+      }
+
       try {
          if (!msg.data.type || msg.data.type === "jwt") {
             console.log("JWT Request");
+
+            await request(
+               "/api/user/oauth/permissions",
+               {
+                  client_id: msg.data.client_id,
+                  origin: url.hostname,
+                  permissions: permissions.join(","),
+               }
+            ); // Will fail if client does not exist
+
             await new Promise<void>((yes) => {
                console.log("Await user acceptance");
                setLoading(false);