80 lines
3 KiB
JavaScript
80 lines
3 KiB
JavaScript
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// s3d.yml read/write. Edits go through the yaml Document API so keys the GUI
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// does not know about (and the operator's comments) survive a save.
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import fs from 'node:fs';
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import path from 'node:path';
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import crypto from 'node:crypto';
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import YAML from '../vendor/yaml/lib/index.js';
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import { defaultDataDir } from './paths.js';
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// Fields the settings form exposes, as dotted yaml paths. Anything else in the
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// file is left untouched.
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export const EDITABLE = [
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'apiAddress', 'apiHTTPSAddress', 'adminAddress', 'adminPassword', 'directory',
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'sia.diskUsageLimit', 'sia.uploadThreads', 'sia.dataShards', 'sia.parityShards',
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's3.hostBases',
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'log.stdout.enabled', 'log.stdout.level', 'log.file.enabled', 'log.file.level',
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];
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export const DEFAULTS = {
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apiAddress: '127.0.0.1:8000',
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adminAddress: '127.0.0.1:8001',
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};
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export function readConfig(file) {
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const exists = fs.existsSync(file);
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const doc = exists ? YAML.parseDocument(fs.readFileSync(file, 'utf8')) : new YAML.Document({});
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if (doc.errors.length) throw new Error(`${file}: ${doc.errors[0].message}`);
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const data = doc.toJS() || {};
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return {
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file,
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exists,
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data,
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// Effective values the daemon will use, for things the GUI needs to reach it.
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apiAddress: data.apiAddress || DEFAULTS.apiAddress,
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adminAddress: data.adminAddress || DEFAULTS.adminAddress,
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adminPassword: data.adminPassword || '',
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directory: process.env.S3D_DATA_DIR || data.directory || defaultDataDir(),
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};
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}
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// patch: { 'sia.uploadThreads': 8, 'apiHTTPSAddress': null, ... }; null/'' deletes the key.
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export function writeConfig(file, patch) {
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const exists = fs.existsSync(file);
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const doc = exists ? YAML.parseDocument(fs.readFileSync(file, 'utf8')) : new YAML.Document({});
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if (doc.contents == null) doc.contents = doc.createNode({});
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for (const [key, value] of Object.entries(patch)) {
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if (!EDITABLE.includes(key)) throw new Error(`not an editable setting: ${key}`);
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const p = key.split('.');
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if (value === null || value === '' || (Array.isArray(value) && value.length === 0)) doc.deleteIn(p);
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else doc.setIn(p, value);
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}
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fs.mkdirSync(path.dirname(file), { recursive: true });
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const tmp = file + '.tmp';
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fs.writeFileSync(tmp, doc.toString(), { mode: 0o600 });
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fs.renameSync(tmp, file);
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return readConfig(file);
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}
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// A fresh config the daemon can start with: admin API on, random password.
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export function ensureConfig(file) {
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if (fs.existsSync(file)) {
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const cfg = readConfig(file);
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if (cfg.data.adminAddress && cfg.data.adminPassword) return cfg;
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// s3d refuses to start without both, and the GUI needs them for stats.
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return writeConfig(file, {
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adminAddress: cfg.data.adminAddress || DEFAULTS.adminAddress,
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adminPassword: cfg.data.adminPassword || randomPassword(),
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});
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}
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return writeConfig(file, {
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apiAddress: DEFAULTS.apiAddress,
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adminAddress: DEFAULTS.adminAddress,
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adminPassword: randomPassword(),
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});
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}
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export function randomPassword() {
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return crypto.randomBytes(18).toString('base64url');
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}
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