feat: drop SIWE params from sign in URLs (#206)

## Motivation

Shorten SIWF deep links/QR codes.

## Change Summary

Remove SIWE params from URLs.

## Merge Checklist

_Choose all relevant options below by adding an `x` now or at any time
before submitting for review_

- [x] PR title adheres to the [conventional
commits](https://www.conventionalcommits.org/en/v1.0.0/) standard
- [x] PR has a changeset
- [x] PR has been tagged with a change label(s) (i.e. documentation,
feature, bugfix, or chore)
- [ ] PR includes documentation if necessary
- [x] All commits have been signed

.changeset/tidy-badgers-brush.md

@@ -0,0 +1,7 @@
+---
+"@farcaster/auth-client": minor
+"@farcaster/auth-relay": minor
+"@farcaster/auth-kit": minor
+---
+
+Drop SIWE params from sign in URLs

apps/relay/src/env.ts

@@ -12,8 +12,7 @@ export const REDIS_URL = process.env["REDIS_URL"] || "redis://localhost:6379";
 export const RELAY_SERVER_PORT = Number(process.env["RELAY_SERVER_PORT"] || "8000");
 export const RELAY_SERVER_HOST = process.env["RELAY_SERVER_HOST"] || "localhost";
 
-export const URL_BASE =
-  process.env["URL_BASE"] || process.env["CONNECT_URI_BASE"] || "https://warpcast.com/~/sign-in-with-farcaster";
+export const URL_BASE = process.env["URL_BASE"] || process.env["CONNECT_URI_BASE"] || "https://warpcast.com/~/siwf";
 
 export const HUB_URL = process.env["HUB_URL"] || "https://hoyt.farcaster.xyz:2281";
 export const HUB_FALLBACK_URL = process.env["HUB_FALLBACK_URL"] || "https://lamia.farcaster.xyz:2281";

apps/relay/src/server.test.ts

@@ -75,7 +75,7 @@ describe("relay server", () => {
       expect(response.status).toBe(201);
       const { channelToken, url, connectUri, nonce, ...rest } = response.data;
       expect(channelToken).toMatch(/[2-9A-HJ-NP-Z]{8}/);
-      expect(url).toMatch("https://warpcast.com/~/sign-in-with-farcaster");
+      expect(url).toMatch("https://warpcast.com/~/siwf");
       expect(url).toBe(connectUri);
       expect(rest).toStrictEqual({});
     });

packages/auth-client/src/actions/app/status.test.ts

@@ -15,7 +15,7 @@ describe("status", () => {
   const statusResponseDataStub: StatusAPIResponse = {
     state: "pending",
     nonce: "abcd1234",
-    url: "https://warpcast.com/~/sign-in-with-farcaster?nonce=abcd1234[...]",
+    url: "https://warpcast.com/~/siwf?channelToken=ABCD2345",
     signatureParams: {
       domain: "example.com",
       siweUri: "https://example.com/login",

packages/auth-client/src/actions/auth/authenticate.test.ts

@@ -24,6 +24,7 @@ describe("authenticate", () => {
   const statusResponseDataStub: AuthenticateAPIResponse = {
     state: "completed",
     nonce: "abcd1234",
+    url: "https://warpcast.com/~/siwf?channelToken=ABCD2345",
     signatureParams: {
       nonce: "abcd1234",
       siweUri: "https://example.com/login",
@@ -33,7 +34,6 @@ describe("authenticate", () => {
       ip: "127.0.0.1",
       userAgent: "Mozilla/5.0",
     },
-    url: "https://warpcast.com/~/sign-in-with-farcaster?nonce=abcd1234[...]",
     message,
     signature,
     fid,

packages/auth-client/src/actions/auth/parseSignInURI.test.ts

@@ -8,15 +8,10 @@ describe("parseSignInURI", () => {
   });
 
   test("parses sign in params from protocol URI", async () => {
-    const { channelToken, params } = client.parseSignInURI({
-      uri: "https://warpcast.com/~/sign-in-with-farcaster?channelToken=76be6229-bdf7-4ad2-930a-540fb2de1e08&nonce=ESsxs6MaFio7OvqWb&siweUri=https%3A%2F%2Fexample.com%2Flogin&domain=example.com",
+    const { channelToken } = client.parseSignInURI({
+      uri: "https://warpcast.com/~/siwf?channelToken=ABCD2345",
     });
 
-    expect(channelToken).toBe("76be6229-bdf7-4ad2-930a-540fb2de1e08");
-    expect(params).toStrictEqual({
-      domain: "example.com",
-      uri: "https://example.com/login",
-      nonce: "ESsxs6MaFio7OvqWb",
-    });
+    expect(channelToken).toBe("ABCD2345");
   });
 });

packages/auth-client/src/messages/build.ts

@@ -2,7 +2,6 @@ import { SiweMessage } from "siwe";
 import { err, ok } from "neverthrow";
 import { AuthClientResult } from "../errors";
 import { validate } from "./validate";
-import { parseSignInURI } from "./parseSignInURI";
 import { STATEMENT, CHAIN_ID } from "./constants";
 
 export type FarcasterResourceParams = {
@@ -29,10 +28,6 @@ export const build = (params: SignInMessageParams): AuthClientResult<BuildRespon
   }
 };
 
-export const buildFromSignInURI = (signInUri: string, fid: number): AuthClientResult<BuildResponse> => {
-  return parseSignInURI(signInUri).andThen(({ params }) => build({ ...params, fid }));
-};
-
 const buildFidResource = (fid: number): string => {
   return `farcaster://fid/${fid}`;
 };

packages/auth-client/src/messages/parseSignInURI.test.ts

@@ -2,17 +2,10 @@ import { parseSignInURI } from "./parseSignInURI";
 
 describe("parseSignInUri", () => {
   test("parses Sign in With Farcaster URI into message params", () => {
-    const signInUri =
-      "https://warpcast.com/~/sign-in-with-farcaster?channelToken=76be6229-bdf7-4ad2-930a-540fb2de1e08&nonce=ESsxs6MaFio7OvqWb&siweUri=https%3A%2F%2Fexample.com%2Flogin&domain=example.com&redirectUrl=https%3A%2F%2Fexample.com";
+    const signInUri = "https://warpcast.com/~/siwf?channelToken=ABCD2345";
     const result = parseSignInURI(signInUri);
     expect(result._unsafeUnwrap()).toStrictEqual({
-      channelToken: "76be6229-bdf7-4ad2-930a-540fb2de1e08",
-      params: {
-        domain: "example.com",
-        uri: "https://example.com/login",
-        nonce: "ESsxs6MaFio7OvqWb",
-        redirectUrl: "https://example.com",
-      },
+      channelToken: "ABCD2345",
     });
   });
 });

packages/auth-client/src/messages/parseSignInURI.ts

@@ -1,34 +1,18 @@
 import { err, ok } from "neverthrow";
 import { AuthClientError, AuthClientResult } from "../errors";
-import { SignInMessageParams } from "./build";
 
 export interface ParsedSignInURI {
   channelToken: string;
-  params?: Partial<SignInMessageParams> & { redirectUrl?: string };
 }
 
 export const parseSignInURI = (signInUri: string): AuthClientResult<ParsedSignInURI> => {
   const url = new URL(signInUri);
   const searchParams = Object.fromEntries(url.searchParams.entries());
-  const { channelToken, ...params } = searchParams;
+  const { channelToken } = searchParams;
   if (!channelToken) {
     return err(validationFail("No channel token provided"));
   }
-  if (params["nonce"] || params["siweUri"] || params["domain"]) {
-    if (!params["nonce"]) {
-      return err(validationFail("No nonce provided"));
-    }
-    if (!params["siweUri"]) {
-      return err(validationFail("No SIWE URI provided"));
-    }
-    if (!params["domain"]) {
-      return err(validationFail("No domain provided"));
-    }
-    const { siweUri, ...siweParams } = params;
-    return ok({ channelToken, params: { uri: siweUri, ...siweParams } });
-  } else {
-    return ok({ channelToken });
-  }
+  return ok({ channelToken });
 };
 
 const validationFail = (message: string): AuthClientError => {