Merge branch 'block-globally-muted-user-to-post' into 'main'

Do not allow deactivated accounts to post

Closes #118

See merge request soapbox-pub/ditto!245

deno.json

@@ -20,7 +20,7 @@
     "@db/sqlite": "jsr:@db/sqlite@^0.11.1",
     "@isaacs/ttlcache": "npm:@isaacs/ttlcache@^1.4.1",
     "@noble/secp256k1": "npm:@noble/secp256k1@^2.0.0",
-    "@nostrify/nostrify": "jsr:@nostrify/nostrify@^0.17.1",
+    "@nostrify/nostrify": "jsr:@nostrify/nostrify@^0.19.0",
     "@sentry/deno": "https://deno.land/x/sentry@7.112.2/index.mjs",
     "@soapbox/kysely-deno-sqlite": "jsr:@soapbox/kysely-deno-sqlite@^2.1.0",
     "@soapbox/stickynotes": "jsr:@soapbox/stickynotes@^0.4.0",

src/RelayError.ts

@@ -0,0 +1,24 @@
+import { NostrRelayOK } from '@nostrify/nostrify';
+
+export type RelayErrorPrefix = 'duplicate' | 'pow' | 'blocked' | 'rate-limited' | 'invalid' | 'error';
+
+/** NIP-01 command line result. */
+export class RelayError extends Error {
+  constructor(prefix: RelayErrorPrefix, message: string) {
+    super(`${prefix}: ${message}`);
+  }
+
+  /** Construct a RelayError from the reason message. */
+  static fromReason(reason: string): RelayError {
+    const [prefix, ...rest] = reason.split(': ');
+    return new RelayError(prefix as RelayErrorPrefix, rest.join(': '));
+  }
+
+  /** Throw a new RelayError if the OK message is false. */
+  static assert(msg: NostrRelayOK): void {
+    const [_, _eventId, ok, reason] = msg;
+    if (!ok) {
+      throw RelayError.fromReason(reason);
+    }
+  }
+}

src/controllers/nostr/relay.ts

@@ -10,6 +10,7 @@ import {
 } from '@nostrify/nostrify';
 import { relayInfoController } from '@/controllers/nostr/relay-info.ts';
 import * as pipeline from '@/pipeline.ts';
+import { RelayError } from '@/RelayError.ts';
 import { Storages } from '@/storages.ts';
 
 import type { AppController } from '@/app.ts';
@@ -95,7 +96,7 @@ function connectStream(socket: WebSocket) {
       await pipeline.handleEvent(event, AbortSignal.timeout(1000));
       send(['OK', event.id, true, '']);
     } catch (e) {
-      if (e instanceof pipeline.RelayError) {
+      if (e instanceof RelayError) {
         send(['OK', event.id, false, e.message]);
       } else {
         send(['OK', event.id, false, 'error: something went wrong']);

src/pipeline.ts

@@ -1,5 +1,6 @@
-import { NostrEvent, NSchema as n } from '@nostrify/nostrify';
+import { NostrEvent, NPolicy, NSchema as n } from '@nostrify/nostrify';
 import { LNURL } from '@nostrify/nostrify/ln';
+import { PipePolicy } from '@nostrify/nostrify/policies';
 import Debug from '@soapbox/stickynotes/debug';
 import { sql } from 'kysely';
 
@@ -9,6 +10,7 @@ import { deleteAttachedMedia } from '@/db/unattached-media.ts';
 import { DittoEvent } from '@/interfaces/DittoEvent.ts';
 import { isEphemeralKind } from '@/kinds.ts';
 import { DVM } from '@/pipeline/DVM.ts';
+import { RelayError } from '@/RelayError.ts';
 import { updateStats } from '@/stats.ts';
 import { hydrateEvents, purifyEvent } from '@/storages/hydrate.ts';
 import { Storages } from '@/storages.ts';
@@ -21,18 +23,10 @@ import { AdminSigner } from '@/signers/AdminSigner.ts';
 import { lnurlCache } from '@/utils/lnurl.ts';
 import { nip05Cache } from '@/utils/nip05.ts';
 
+import { MuteListPolicy } from '@/policies/MuteListPolicy.ts';
+
 const debug = Debug('ditto:pipeline');
 
-let UserPolicy: any;
-
-try {
-  UserPolicy = (await import('../data/policy.ts')).default;
-  debug('policy loaded from data/policy.ts');
-} catch (_e) {
-  // do nothing
-  debug('policy not found');
-}
-
 /**
  * Common pipeline function to process (and maybe store) events.
  * It is idempotent, so it can be called multiple times for the same event.
@@ -41,18 +35,13 @@ async function handleEvent(event: DittoEvent, signal: AbortSignal): Promise<void
   if (!(await verifyEventWorker(event))) return;
   if (await encounterEvent(event, signal)) return;
   debug(`NostrEvent<${event.kind}> ${event.id}`);
-  await hydrateEvent(event, signal);
 
-  if (UserPolicy) {
-    const result = await new UserPolicy().call(event, signal);
-    debug(JSON.stringify(result));
-    const [_, _eventId, ok, reason] = result;
-    if (!ok) {
-      const [prefix, ...rest] = reason.split(': ');
-      throw new RelayError(prefix, rest.join(': '));
-    }
+  if (event.kind !== 24133) {
+    await policyFilter(event);
   }
 
+  await hydrateEvent(event, signal);
+
   await Promise.all([
     storeEvent(event, signal),
     parseMetadata(event, signal),
@@ -66,6 +55,25 @@ async function handleEvent(event: DittoEvent, signal: AbortSignal): Promise<void
   ]);
 }
 
+async function policyFilter(event: NostrEvent): Promise<void> {
+  const policies: NPolicy[] = [
+    new MuteListPolicy(Conf.pubkey, Storages.admin),
+  ];
+
+  try {
+    const CustomPolicy = (await import('../data/policy.ts')).default;
+    policies.push(new CustomPolicy());
+  } catch (_e) {
+    debug('policy not found - https://docs.soapbox.pub/ditto/policies/');
+  }
+
+  const policy = new PipePolicy(policies.reverse());
+
+  const result = await policy.call(event);
+  debug(JSON.stringify(result));
+  RelayError.assert(result);
+}
+
 /** Encounter the event, and return whether it has already been encountered. */
 async function encounterEvent(event: NostrEvent, signal: AbortSignal): Promise<boolean> {
   const [existing] = await Storages.cache.query([{ ids: [event.id], limit: 1 }]);
@@ -270,11 +278,4 @@ async function streamOut(event: NostrEvent): Promise<void> {
   }
 }
 
-/** NIP-20 command line result. */
-class RelayError extends Error {
-  constructor(prefix: 'duplicate' | 'pow' | 'blocked' | 'rate-limited' | 'invalid' | 'error', message: string) {
-    super(`${prefix}: ${message}`);
-  }
-}
-
-export { handleEvent, RelayError };
+export { handleEvent };

src/policies/MuteListPolicy.test.ts

@@ -27,7 +27,7 @@ Deno.test('block event: muted user cannot post', async () => {
 
   const ok = await policy.call(event1authorUserMeCopy);
 
-  assertEquals(ok, ['OK', event1authorUserMeCopy.id, false, 'You are banned in this server.']);
+  assertEquals(ok, ['OK', event1authorUserMeCopy.id, false, 'blocked: Your account has been deactivated.']);
 });
 
 Deno.test('allow event: user is NOT muted because there is no muted event', async () => {

src/policies/MuteListPolicy.ts

@@ -10,7 +10,7 @@ export class MuteListPolicy implements NPolicy {
     const pubkeys = getTagSet(muteList?.tags ?? [], 'p');
 
     if (pubkeys.has(event.pubkey)) {
-      return ['OK', event.id, false, 'You are banned in this server.'];
+      return ['OK', event.id, false, 'blocked: Your account has been deactivated.'];
     }
 
     return ['OK', event.id, true, ''];

src/utils/api.ts

@@ -9,6 +9,7 @@ import { z } from 'zod';
 import { type AppContext } from '@/app.ts';
 import { Conf } from '@/config.ts';
 import * as pipeline from '@/pipeline.ts';
+import { RelayError } from '@/RelayError.ts';
 import { AdminSigner } from '@/signers/AdminSigner.ts';
 import { APISigner } from '@/signers/APISigner.ts';
 import { Storages } from '@/storages.ts';
@@ -103,12 +104,10 @@ async function updateAdminEvent<E extends EventStub>(
 async function publishEvent(event: NostrEvent, c: AppContext): Promise<NostrEvent> {
   debug('EVENT', event);
   try {
-    await Promise.all([
-      pipeline.handleEvent(event, c.req.raw.signal),
-      Storages.client.event(event),
-    ]);
+    await pipeline.handleEvent(event, c.req.raw.signal);
+    await Storages.client.event(event);
   } catch (e) {
-    if (e instanceof pipeline.RelayError) {
+    if (e instanceof RelayError) {
       throw new HTTPException(422, {
         res: c.json({ error: e.message }, 422),
       });