81 lines
3.1 KiB
TypeScript
81 lines
3.1 KiB
TypeScript
/**
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* Deletes what has expired and seeds the first admin, each time connection.ts
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* opens the database.
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*
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* @module
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*/
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import type { DatabaseSync } from "node:sqlite";
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import {
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ATTACHMENTS_DIR,
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ORPHANED_ATTACHMENTS_RETENTION_HOURS,
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UNUSED_INVITES_RETENTION_DAYS,
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} from "../config.ts";
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import { hashPassword } from "../lib/password.ts";
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/**
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* Returns the time `ms` ago as an ISO string, the format dates are stored in.
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*/
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function isoAgo(ms: number): string {
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return new Date(Date.now() - ms).toISOString();
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}
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/**
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* Runs after the migrations, each time the server starts. It deletes used or
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* expired reset tokens, invites past their validity, and attachments nothing
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* links to or whose resource is gone. On an instance with no users, it creates
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* the user `admin` with the password `admin`, which whoever installs it must
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* change.
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*/
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export async function runStartupTasks(db: DatabaseSync): Promise<void> {
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// Dates are stored as ISO strings and compared as text, so the cutoffs are
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// ISO strings too. SQLite's datetime() has a space where ISO has a `T`.
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db.prepare(
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`DELETE FROM password_reset_tokens WHERE expires_at < ? OR used_at IS NOT NULL;`,
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).run(isoAgo(0));
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db.prepare(
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`DELETE FROM invites WHERE used_at IS NULL AND created_at < ?;`,
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).run(isoAgo(UNUSED_INVITES_RETENTION_DAYS * 86_400_000));
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// An image is uploaded as soon as it's pasted, and linked only when the text
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// it's pasted into is saved, so a fresh unlinked one is left alone. One whose
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// dump, comment, playlist, message or user is gone goes whatever its age.
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const attachmentCutoff = isoAgo(
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ORPHANED_ATTACHMENTS_RETENTION_HOURS * 3_600_000,
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);
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const ORPHANED = `
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(resource_id IS NULL AND created_at < ?)
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OR (resource_id IS NOT NULL AND NOT CASE resource_type
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WHEN 'dump' THEN EXISTS (SELECT 1 FROM dumps WHERE id = resource_id)
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WHEN 'comment' THEN EXISTS (SELECT 1 FROM comments WHERE id = resource_id AND deleted = 0)
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WHEN 'playlist' THEN EXISTS (SELECT 1 FROM playlists WHERE id = resource_id)
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WHEN 'chat' THEN EXISTS (SELECT 1 FROM chat_messages WHERE id = resource_id)
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WHEN 'user' THEN EXISTS (SELECT 1 FROM users WHERE id = resource_id)
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ELSE 0
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END)`;
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const orphanedAttachments = db.prepare(
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`SELECT id FROM attachments WHERE ${ORPHANED};`,
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).all(attachmentCutoff) as { id: string }[];
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if (orphanedAttachments.length > 0) {
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for (const { id } of orphanedAttachments) {
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await Deno.remove(`${ATTACHMENTS_DIR}/${id}`).catch(() => {});
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}
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db.prepare(`DELETE FROM attachments WHERE ${ORPHANED};`)
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.run(attachmentCutoff);
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}
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// Registration needs an invite, so the first user can only come from here.
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const userCount = db.prepare(`SELECT COUNT(*) as count FROM users`).get() as {
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count: number;
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};
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if (userCount.count === 0) {
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db.prepare(
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`INSERT INTO users (id, username, password_hash, role, created_at, email) VALUES (?, 'admin', ?, 'admin', ?, 'admin@localhost')`,
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).run(crypto.randomUUID(), await hashPassword("admin"), isoAgo(0));
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console.log(
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"Created default admin user (username: admin, password: admin)",
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);
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}
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}
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