From 4ffa9626f3baa51591e80e862e27a6f1572f7707 Mon Sep 17 00:00:00 2001
From: Moon Man <moon@shipoclu.com>
Date: Mon, 1 Jan 2024 07:52:40 -0500
Subject: [PATCH] actor type on user, lookup table

---
 migrations/20240101055331_lookup.js | 72 +++++++++++++++++++++++++++++
 src/activity.ts                     |  8 ++--
 src/user.ts                         |  1 +
 3 files changed, 77 insertions(+), 4 deletions(-)
 create mode 100644 migrations/20240101055331_lookup.js

diff --git a/migrations/20240101055331_lookup.js b/migrations/20240101055331_lookup.js
new file mode 100644
index 0000000..1e3d2bb
--- /dev/null
+++ b/migrations/20240101055331_lookup.js
@@ -0,0 +1,72 @@
+import { generateKeyPair } from "node:crypto";
+
+const SITE_USER_ID = 1_000_000_000;
+
+/**
+ * Add a lookup table.
+ * Add an actor type to "users" table.
+ */
+
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+export const up = async (knex) => {
+    return knex.schema
+        .createTable("lookup", (table) => {
+            table.string("key").primary();
+            table.string("value");
+        })
+        .then(async () => {
+            await knex.schema.table("users", (table) => {
+                table.string("actor_type");
+            });
+
+            const { pub, priv } = await (new Promise((resolve, reject) => {
+                generateKeyPair("rsa", {
+                    modulusLength: 2048,
+                    publicKeyEncoding: {
+                        type: "spki",
+                        format: "pem"
+                    },
+                    privateKeyEncoding: {
+                        type: "pkcs8",
+                        format: "pem"
+                    }
+                }, (err, pub, priv) => {
+                    if (err) reject(err);
+                    else resolve({ pub, priv });
+                });
+            }));
+
+            await knex("users").insert({
+                id: SITE_USER_ID,
+                actor_type: "Application",
+                name: "site",
+                nickname: process.env.blog_host,
+                bio: "The site itself.",
+                public_key: pub,
+                private_key: priv,
+                deleted: false
+            });
+        });
+    ;
+};
+
+/**
+ * @param { import("knex").Knex } knex
+ * @returns { Promise<void> }
+ */
+export const down = async (knex) => {
+    await knex("users")
+        .delete()
+        .where("id", SITE_USER_ID)
+        ;
+
+    return knex.schema
+        .dropTableIfExists("lookup")
+        .table("users", (table) => {
+            table.dropColumn("actor_type");
+        });
+    ;
+};
diff --git a/src/activity.ts b/src/activity.ts
index b14bc4c..9cec981 100644
--- a/src/activity.ts
+++ b/src/activity.ts
@@ -5,7 +5,7 @@ import { User, getByActor } from "./user.js";
 import { fillRoute, reverseRoute } from "./router.js";
 import { streamToString, hashDigest } from "./util.js";
 import { signedFetch, SignedInit, getActor } from "./net.js";
-import { getById as getUserById, getKeyId } from "./user.js";
+import { getById as getUserById, keyIdFromNickname } from "./user.js";
 import parser from "activitypub-http-signatures";
 import type { Request, Response } from "express";
 import { addFollower } from "./follower.js";
@@ -60,7 +60,7 @@ export const handleInboxPost = async (req: Request, res: Response) => {
                         console.log("found article author");
 
                         const init: SignedInit = {
-                            keyId: getKeyId(user.nickname),
+                            keyId: keyIdFromNickname(user.nickname),
                             privateKey: user.private_key
                         };
         
@@ -98,7 +98,7 @@ export const handleInboxPost = async (req: Request, res: Response) => {
                 }
 
                 const init: SignedInit = {
-                    keyId: getKeyId(signer.nickname),
+                    keyId: keyIdFromNickname(signer.nickname),
                     privateKey: signer.private_key
                 };
 
@@ -271,7 +271,7 @@ export const sendAccept = async (user: User, followId: string, follower: string,
     console.log("Accept payload:", payload);
 
     const init: RequestInit = { method: "POST", body: payload };
-    const init2 = { privateKey: user.private_key, keyId: getKeyId(user.nickname) };
+    const init2 = { privateKey: user.private_key, keyId: keyIdFromNickname(user.nickname) };
 
     const result = await signedFetch(inbox, init, init2);
     console.log("response status:", result.status);
diff --git a/src/user.ts b/src/user.ts
index 1caee49..db37a0e 100644
--- a/src/user.ts
+++ b/src/user.ts
@@ -8,6 +8,7 @@ export const nicknameRegex = /^[a-zA-Z0-9_]+$/;
 
 export const zUser = z.object({
     id: z.number().min(0),
+    actor_type: z.string().min(1),
     name: z.string().min(1),
     nickname: z.string().regex(nicknameRegex),
     bio: z.string(),