743 lines
21 KiB
TypeScript
743 lines
21 KiB
TypeScript
import async from "async";
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import crypto from "crypto";
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import oldFs, { promises as fs } from "graceful-fs";
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import glob from "glob";
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import { config } from "../config";
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import ErrorTypes from "../utils/errorTypes";
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import Logger from "../logger";
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import logger from "../logger";
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import * as MailService from "../services/mailService";
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import { normalizeString } from "../shared/utils/strings";
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import {
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monitoringConfirmUrl,
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monitoringDisableUrl,
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} from "../utils/urlBuilder";
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import {
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BaseNode,
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Coordinates,
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CreateOrUpdateNode,
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EmailAddress,
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FastdKey,
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Hostname,
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isFastdKey,
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isHostname,
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isMAC,
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isMonitoringToken,
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isStoredNode,
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isToken,
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MAC,
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MailType,
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MonitoringState,
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MonitoringToken,
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Nickname,
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NodeSecrets,
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NodeStatistics,
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StoredNode,
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Token,
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TypeGuard,
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UnixTimestampMilliseconds,
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UnixTimestampSeconds,
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} from "../types";
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import util from "util";
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import { filterUndefinedFromJSON } from "../shared/utils/json";
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import { unhandledEnumField } from "../shared/utils/enums";
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import { toUnixTimestampSeconds } from "../shared/utils/time";
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const pglob = util.promisify(glob);
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type NodeFilter = {
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hostname?: Hostname;
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mac?: MAC;
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key?: FastdKey;
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token?: Token;
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monitoringToken?: MonitoringToken;
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};
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type NodeFilenameParsed = {
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hostname?: Hostname;
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mac?: MAC;
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key?: FastdKey;
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token?: Token;
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monitoringToken?: MonitoringToken;
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};
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enum LINE_PREFIX {
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HOSTNAME = "# Knotenname: ",
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NICKNAME = "# Ansprechpartner: ",
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EMAIL = "# Kontakt: ",
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COORDS = "# Koordinaten: ",
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MAC = "# MAC: ",
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TOKEN = "# Token: ",
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MONITORING = "# Monitoring: ",
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MONITORING_TOKEN = "# Monitoring-Token: ",
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}
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function generateToken<
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Type extends string & { readonly __tag: symbol } = never
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>(): Type {
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return crypto.randomBytes(8).toString("hex") as Type;
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}
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function toNodeFilesPattern(filter: NodeFilter): string {
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const fields: (string | undefined)[] = [
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filter.hostname,
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filter.mac,
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filter.key,
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filter.token,
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filter.monitoringToken,
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];
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const pattern = fields.map((value) => value || "*").join("@");
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return config.server.peersPath + "/" + pattern.toLowerCase();
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}
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function findNodeFiles(filter: NodeFilter): Promise<string[]> {
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return pglob(toNodeFilesPattern(filter));
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}
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function findNodeFilesSync(filter: NodeFilter) {
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return glob.sync(toNodeFilesPattern(filter));
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}
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async function findFilesInPeersPath(): Promise<string[]> {
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const files = await pglob(config.server.peersPath + "/*");
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return await async.filter(files, (file, fileCallback) => {
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if (file[0] === ".") {
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return fileCallback(null, false);
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}
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fs.lstat(file)
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.then((stats) => fileCallback(null, stats.isFile()))
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.catch(fileCallback);
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});
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}
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function parseNodeFilename(filename: string): NodeFilenameParsed {
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const parts = filename.split("@", 5);
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function get<T>(isT: TypeGuard<T>, index: number): T | undefined {
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const value =
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index >= 0 && index < parts.length ? parts[index] : undefined;
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return isT(value) ? value : undefined;
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}
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return {
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hostname: get(isHostname, 0),
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mac: get(isMAC, 1),
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key: get(isFastdKey, 2),
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token: get(isToken, 3),
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monitoringToken: get(isMonitoringToken, 4),
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};
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}
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function isDuplicate(filter: NodeFilter, token?: Token): boolean {
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const files = findNodeFilesSync(filter);
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if (files.length === 0) {
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return false;
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}
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if (files.length > 1 || !token /* node is being created*/) {
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return true;
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}
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return parseNodeFilename(files[0]).token !== token;
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}
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function checkNoDuplicates(
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token: Token | undefined,
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node: BaseNode,
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nodeSecrets: NodeSecrets
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): void {
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if (isDuplicate({ hostname: node.hostname }, token)) {
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throw {
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data: { msg: "Already exists.", field: "hostname" },
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type: ErrorTypes.conflict,
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};
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}
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if (node.key) {
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if (isDuplicate({ key: node.key }, token)) {
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throw {
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data: { msg: "Already exists.", field: "key" },
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type: ErrorTypes.conflict,
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};
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}
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}
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if (isDuplicate({ mac: node.mac }, token)) {
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throw {
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data: { msg: "Already exists.", field: "mac" },
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type: ErrorTypes.conflict,
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};
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}
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if (
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nodeSecrets.monitoringToken &&
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isDuplicate({ monitoringToken: nodeSecrets.monitoringToken }, token)
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) {
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throw {
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data: { msg: "Already exists.", field: "monitoringToken" },
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type: ErrorTypes.conflict,
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};
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}
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}
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function toNodeFilename(
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token: Token,
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node: BaseNode,
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nodeSecrets: NodeSecrets
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): string {
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return (
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config.server.peersPath +
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"/" +
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(
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(node.hostname || "") +
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"@" +
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(node.mac || "") +
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"@" +
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(node.key || "") +
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"@" +
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(token || "") +
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"@" +
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(nodeSecrets.monitoringToken || "")
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).toLowerCase()
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);
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}
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function getNodeValue(
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prefix: LINE_PREFIX,
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token: Token,
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node: CreateOrUpdateNode,
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monitoringState: MonitoringState,
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nodeSecrets: NodeSecrets
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): string {
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switch (prefix) {
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case LINE_PREFIX.HOSTNAME:
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return node.hostname;
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case LINE_PREFIX.NICKNAME:
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return node.nickname;
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case LINE_PREFIX.EMAIL:
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return node.email;
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case LINE_PREFIX.COORDS:
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return node.coords || "";
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case LINE_PREFIX.MAC:
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return node.mac;
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case LINE_PREFIX.TOKEN:
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return token;
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case LINE_PREFIX.MONITORING:
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if (node.monitoring && monitoringState === MonitoringState.ACTIVE) {
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return "aktiv";
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} else if (
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node.monitoring &&
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monitoringState === MonitoringState.PENDING
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) {
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return "pending";
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}
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return "";
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case LINE_PREFIX.MONITORING_TOKEN:
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return nodeSecrets.monitoringToken || "";
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default:
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return unhandledEnumField(prefix);
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}
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}
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async function writeNodeFile(
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isUpdate: boolean,
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token: Token,
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node: CreateOrUpdateNode,
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monitoringState: MonitoringState,
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nodeSecrets: NodeSecrets
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): Promise<StoredNode> {
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const filename = toNodeFilename(token, node, nodeSecrets);
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let data = "";
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for (const prefix of Object.values(LINE_PREFIX)) {
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data += `${prefix}${getNodeValue(
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prefix,
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token,
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node,
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monitoringState,
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nodeSecrets
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)}\n`;
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}
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if (node.key) {
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data += `key "${node.key}";\n`;
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}
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// since node.js is single threaded we don't need a lock when working with synchronous operations
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if (isUpdate) {
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const files = findNodeFilesSync({ token: token });
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if (files.length !== 1) {
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throw { data: "Node not found.", type: ErrorTypes.notFound };
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}
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checkNoDuplicates(token, node, nodeSecrets);
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const file = files[0];
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try {
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oldFs.unlinkSync(file);
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} catch (error) {
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Logger.tag("node", "save").error(
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"Could not delete old node file: " + file,
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error
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);
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throw {
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data: "Could not remove old node data.",
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type: ErrorTypes.internalError,
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};
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}
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} else {
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checkNoDuplicates(undefined, node, nodeSecrets);
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}
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try {
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oldFs.writeFileSync(filename, data, "utf8");
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const { node: storedNode } = await parseNodeFile(filename);
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return storedNode;
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} catch (error) {
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Logger.tag("node", "save").error(
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"Could not write node file: " + filename,
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error
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);
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throw {
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data: "Could not write node data.",
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type: ErrorTypes.internalError,
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};
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}
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}
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async function deleteNodeFile(token: Token): Promise<void> {
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let files;
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try {
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files = await findNodeFiles({ token: token });
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} catch (error) {
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Logger.tag("node", "delete").error(
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"Could not find node file: " + files,
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error
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);
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throw {
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data: "Could not delete node.",
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type: ErrorTypes.internalError,
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};
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}
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if (files.length !== 1) {
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throw { data: "Node not found.", type: ErrorTypes.notFound };
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}
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try {
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oldFs.unlinkSync(files[0]);
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} catch (error) {
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Logger.tag("node", "delete").error(
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"Could not delete node file: " + files,
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error
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);
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throw {
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data: "Could not delete node.",
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type: ErrorTypes.internalError,
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};
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}
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}
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class StoredNodeBuilder {
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public token: Token = "" as Token; // FIXME: Either make token optional in Node or handle this!
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public nickname: Nickname = "" as Nickname;
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public email: EmailAddress = "" as EmailAddress;
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public hostname: Hostname = "" as Hostname; // FIXME: Either make hostname optional in Node or handle this!
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public coords?: Coordinates;
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public key?: FastdKey;
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public mac: MAC = "" as MAC; // FIXME: Either make mac optional in Node or handle this!
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public monitoringState: MonitoringState = MonitoringState.DISABLED;
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constructor(public readonly modifiedAt: UnixTimestampSeconds) {}
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public build(): StoredNode {
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const node = {
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token: this.token,
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nickname: this.nickname,
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email: this.email,
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hostname: this.hostname,
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coords: this.coords,
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key: this.key,
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mac: this.mac,
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monitoringState: this.monitoringState,
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modifiedAt: this.modifiedAt,
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};
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if (!isStoredNode(node)) {
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logger.tag("NodeService").error("Not a valid StoredNode:", node);
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throw {
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data: "Could not build StoredNode.",
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type: ErrorTypes.internalError,
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};
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}
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return node;
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}
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}
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function setNodeValue(
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prefix: LINE_PREFIX,
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node: StoredNodeBuilder,
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nodeSecrets: NodeSecrets,
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value: string
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) {
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switch (prefix) {
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case LINE_PREFIX.HOSTNAME:
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node.hostname = value as Hostname;
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break;
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case LINE_PREFIX.NICKNAME:
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node.nickname = value as Nickname;
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break;
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case LINE_PREFIX.EMAIL:
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node.email = value as EmailAddress;
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break;
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case LINE_PREFIX.COORDS:
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node.coords = value as Coordinates;
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break;
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case LINE_PREFIX.MAC:
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node.mac = value as MAC;
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break;
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case LINE_PREFIX.TOKEN:
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node.token = value as Token;
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break;
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case LINE_PREFIX.MONITORING: {
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const active = value === "aktiv";
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const pending = value === "pending";
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node.monitoringState = active
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? MonitoringState.ACTIVE
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: pending
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? MonitoringState.PENDING
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: MonitoringState.DISABLED;
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break;
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}
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case LINE_PREFIX.MONITORING_TOKEN:
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nodeSecrets.monitoringToken = value as MonitoringToken;
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break;
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default:
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return unhandledEnumField(prefix);
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}
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}
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async function getModifiedAt(file: string): Promise<UnixTimestampSeconds> {
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const modifiedAtMs = (await fs.lstat(file))
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.mtimeMs as UnixTimestampMilliseconds;
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return toUnixTimestampSeconds(modifiedAtMs);
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}
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async function parseNodeFile(
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file: string
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): Promise<{ node: StoredNode; nodeSecrets: NodeSecrets }> {
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const contents = await fs.readFile(file);
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const modifiedAt = await getModifiedAt(file);
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const lines = contents.toString().split("\n");
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const node = new StoredNodeBuilder(modifiedAt);
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const nodeSecrets: NodeSecrets = {};
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for (const line of lines) {
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if (line.substring(0, 5) === 'key "') {
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node.key = normalizeString(line.split('"')[1]) as FastdKey;
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} else {
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for (const prefix of Object.values(LINE_PREFIX)) {
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if (line.substring(0, prefix.length) === prefix) {
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const value = normalizeString(
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line.substring(prefix.length)
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);
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setNodeValue(prefix, node, nodeSecrets, value);
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break;
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}
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}
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}
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}
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return {
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node: node.build(),
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nodeSecrets,
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};
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}
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|
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async function findNodeDataByFilePattern(
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filter: NodeFilter
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): Promise<{ node: StoredNode; nodeSecrets: NodeSecrets } | null> {
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const files = await findNodeFiles(filter);
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|
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if (files.length !== 1) {
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return null;
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}
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const file = files[0];
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return await parseNodeFile(file);
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}
|
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|
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async function getNodeDataByFilePattern(
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filter: NodeFilter
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): Promise<{ node: StoredNode; nodeSecrets: NodeSecrets }> {
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const result = await findNodeDataByFilePattern(filter);
|
|
if (!result) {
|
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throw { data: "Node not found.", type: ErrorTypes.notFound };
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}
|
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|
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return result;
|
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}
|
|
|
|
async function sendMonitoringConfirmationMail(
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node: StoredNode,
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nodeSecrets: NodeSecrets
|
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): Promise<void> {
|
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const monitoringToken = nodeSecrets.monitoringToken;
|
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if (!monitoringToken) {
|
|
Logger.tag("monitoring", "confirmation").error(
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"Could not enqueue confirmation mail. No monitoring token found."
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);
|
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throw { data: "Internal error.", type: ErrorTypes.internalError };
|
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}
|
|
|
|
const confirmUrl = monitoringConfirmUrl(monitoringToken);
|
|
const disableUrl = monitoringDisableUrl(monitoringToken);
|
|
|
|
await MailService.enqueue(
|
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config.server.email.from,
|
|
node.nickname + " <" + node.email + ">",
|
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MailType.MONITORING_CONFIRMATION,
|
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{
|
|
node: filterUndefinedFromJSON(node),
|
|
confirmUrl: confirmUrl,
|
|
disableUrl: disableUrl,
|
|
}
|
|
);
|
|
}
|
|
|
|
export async function createNode(
|
|
node: CreateOrUpdateNode
|
|
): Promise<StoredNode> {
|
|
const token: Token = generateToken();
|
|
const nodeSecrets: NodeSecrets = {};
|
|
|
|
const monitoringState = node.monitoring
|
|
? MonitoringState.PENDING
|
|
: MonitoringState.DISABLED;
|
|
if (node.monitoring) {
|
|
nodeSecrets.monitoringToken = generateToken<MonitoringToken>();
|
|
}
|
|
|
|
const createdNode = await writeNodeFile(
|
|
false,
|
|
token,
|
|
node,
|
|
monitoringState,
|
|
nodeSecrets
|
|
);
|
|
|
|
if (createdNode.monitoringState == MonitoringState.PENDING) {
|
|
await sendMonitoringConfirmationMail(createdNode, nodeSecrets);
|
|
}
|
|
|
|
return createdNode;
|
|
}
|
|
|
|
export async function updateNode(
|
|
token: Token,
|
|
node: CreateOrUpdateNode
|
|
): Promise<StoredNode> {
|
|
const { node: currentNode, nodeSecrets } =
|
|
await getNodeDataWithSecretsByToken(token);
|
|
|
|
let monitoringState = MonitoringState.DISABLED;
|
|
let monitoringToken: MonitoringToken | undefined = undefined;
|
|
|
|
if (node.monitoring) {
|
|
switch (currentNode.monitoringState) {
|
|
case MonitoringState.DISABLED:
|
|
// monitoring just has been enabled
|
|
monitoringState = MonitoringState.PENDING;
|
|
monitoringToken = generateToken<MonitoringToken>();
|
|
break;
|
|
|
|
case MonitoringState.PENDING:
|
|
case MonitoringState.ACTIVE:
|
|
if (currentNode.email !== node.email) {
|
|
// new email so we need a new token and a reconfirmation
|
|
monitoringState = MonitoringState.PENDING;
|
|
monitoringToken = generateToken<MonitoringToken>();
|
|
} else {
|
|
// email unchanged, keep token (fix if not set) and confirmation state
|
|
monitoringState = currentNode.monitoringState;
|
|
monitoringToken =
|
|
nodeSecrets.monitoringToken ||
|
|
generateToken<MonitoringToken>();
|
|
}
|
|
break;
|
|
|
|
default:
|
|
unhandledEnumField(currentNode.monitoringState);
|
|
}
|
|
}
|
|
|
|
nodeSecrets.monitoringToken = monitoringToken;
|
|
|
|
const storedNode = await writeNodeFile(
|
|
true,
|
|
token,
|
|
node,
|
|
monitoringState,
|
|
nodeSecrets
|
|
);
|
|
if (storedNode.monitoringState === MonitoringState.PENDING) {
|
|
await sendMonitoringConfirmationMail(storedNode, nodeSecrets);
|
|
}
|
|
|
|
return storedNode;
|
|
}
|
|
|
|
export async function internalUpdateNode(
|
|
token: Token,
|
|
node: CreateOrUpdateNode,
|
|
monitoringState: MonitoringState,
|
|
nodeSecrets: NodeSecrets
|
|
): Promise<StoredNode> {
|
|
return await writeNodeFile(true, token, node, monitoringState, nodeSecrets);
|
|
}
|
|
|
|
export async function deleteNode(token: Token): Promise<void> {
|
|
await deleteNodeFile(token);
|
|
}
|
|
|
|
export async function getAllNodes(): Promise<StoredNode[]> {
|
|
let files;
|
|
try {
|
|
files = await findNodeFiles({});
|
|
} catch (error) {
|
|
Logger.tag("nodes").error("Error getting all nodes:", error);
|
|
throw { data: "Internal error.", type: ErrorTypes.internalError };
|
|
}
|
|
|
|
const nodes: StoredNode[] = [];
|
|
for (const file of files) {
|
|
try {
|
|
const { node } = await parseNodeFile(file);
|
|
nodes.push(node);
|
|
} catch (error) {
|
|
Logger.tag("nodes").error("Error getting all nodes:", error);
|
|
throw { data: "Internal error.", type: ErrorTypes.internalError };
|
|
}
|
|
}
|
|
|
|
return nodes;
|
|
}
|
|
|
|
export async function findNodeDataWithSecretsByMac(
|
|
mac: MAC
|
|
): Promise<{ node: StoredNode; nodeSecrets: NodeSecrets } | null> {
|
|
return await findNodeDataByFilePattern({ mac });
|
|
}
|
|
|
|
export async function findNodeDataByMac(mac: MAC): Promise<StoredNode | null> {
|
|
const result = await findNodeDataByFilePattern({ mac });
|
|
return result ? result.node : null;
|
|
}
|
|
|
|
export async function getNodeDataWithSecretsByToken(
|
|
token: Token
|
|
): Promise<{ node: StoredNode; nodeSecrets: NodeSecrets }> {
|
|
return await getNodeDataByFilePattern({ token: token });
|
|
}
|
|
|
|
export async function getNodeDataByToken(token: Token): Promise<StoredNode> {
|
|
const { node } = await getNodeDataByFilePattern({ token: token });
|
|
return node;
|
|
}
|
|
|
|
export async function getNodeDataWithSecretsByMonitoringToken(
|
|
monitoringToken: MonitoringToken
|
|
): Promise<{ node: StoredNode; nodeSecrets: NodeSecrets }> {
|
|
return await getNodeDataByFilePattern({ monitoringToken: monitoringToken });
|
|
}
|
|
|
|
export async function getNodeDataByMonitoringToken(
|
|
monitoringToken: MonitoringToken
|
|
): Promise<StoredNode> {
|
|
const { node } = await getNodeDataByFilePattern({
|
|
monitoringToken: monitoringToken,
|
|
});
|
|
return node;
|
|
}
|
|
|
|
export async function fixNodeFilenames(): Promise<void> {
|
|
const files = await findFilesInPeersPath();
|
|
|
|
for (const file of files) {
|
|
const { node, nodeSecrets } = await parseNodeFile(file);
|
|
|
|
const expectedFilename = toNodeFilename(node.token, node, nodeSecrets);
|
|
if (file !== expectedFilename) {
|
|
try {
|
|
await fs.rename(file, expectedFilename);
|
|
} catch (error) {
|
|
throw new Error(
|
|
"Cannot rename file " +
|
|
file +
|
|
" to " +
|
|
expectedFilename +
|
|
" => " +
|
|
error
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
export async function findNodesModifiedBefore(
|
|
timestamp: UnixTimestampSeconds
|
|
): Promise<StoredNode[]> {
|
|
const nodes = await getAllNodes();
|
|
return nodes.filter((node) => node.modifiedAt < timestamp);
|
|
}
|
|
|
|
export async function getNodeStatistics(): Promise<NodeStatistics> {
|
|
const nodes = await getAllNodes();
|
|
|
|
const nodeStatistics: NodeStatistics = {
|
|
registered: nodes.length,
|
|
withVPN: 0,
|
|
withCoords: 0,
|
|
monitoring: {
|
|
active: 0,
|
|
pending: 0,
|
|
},
|
|
};
|
|
|
|
for (const node of nodes) {
|
|
if (node.key) {
|
|
nodeStatistics.withVPN += 1;
|
|
}
|
|
|
|
if (node.coords) {
|
|
nodeStatistics.withCoords += 1;
|
|
}
|
|
|
|
const monitoringState = node.monitoringState;
|
|
switch (monitoringState) {
|
|
case MonitoringState.ACTIVE:
|
|
nodeStatistics.monitoring.active += 1;
|
|
break;
|
|
case MonitoringState.PENDING:
|
|
nodeStatistics.monitoring.pending += 1;
|
|
break;
|
|
case MonitoringState.DISABLED:
|
|
// Not counted seperately.
|
|
break;
|
|
|
|
default:
|
|
unhandledEnumField(monitoringState);
|
|
}
|
|
}
|
|
|
|
return nodeStatistics;
|
|
}
|