BOSS 2.0 - Full TS and microservice rewrite. Still pulls from local until admin panel updates

src/middleware/authentication.ts

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+import express from 'express';
+import { getUserDataByPID } from '@/util';
+
+export default async function authenticationMiddleware(request: express.Request, response: express.Response, next: express.NextFunction): Promise<void> {
+	if (request.pid) {
+		// TODO - Handle 3DS NEX accounts
+		request.pnid = await getUserDataByPID(request.pid);
+	}
+
+	return next();
+}

src/middleware/parse-user-agent.ts

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+import express from 'express';
+import RequestException from '@/request-exception';
+import type { UserAgentInfo } from '@/types/common/user-agent-info';
+
+const FIRMWARE_PATCH_REGION_WIIU_REGEX = /(\d)([JEU])/;
+
+export default function parseUserAgentMiddleware(request: express.Request, response: express.Response, next: express.NextFunction): void {
+	const userAgent = request.header('user-agent');
+
+	if (!userAgent) {
+		return next(new RequestException('Missing or invalid user agent', 400));
+	}
+
+	let result: UserAgentInfo | null = null;
+
+	if (userAgent.startsWith('PBOSU')) {
+		result = parseWiiU(userAgent);
+	} else if (userAgent.startsWith('PBOS')) {
+		result = parse3DS(userAgent);
+	}
+
+	if (!result) {
+		return next(new RequestException('Missing or invalid user agent', 400));
+	}
+
+	request.pid = result.userPID;
+
+	return next();
+}
+
+function parseWiiU(userAgent: string): UserAgentInfo | null {
+	const parts = userAgent.split('/');
+
+	if (parts.length !== 3) {
+		return null;
+	}
+
+	const [bossLibraryInfo, userInfo, firmwareVersion] = parts;
+	const [bossLibraryName, bossLibraryVersion] = bossLibraryInfo.split('-');
+	const [bossLibraryVersionMajor, bossLibraryVersionMinor] = bossLibraryVersion.split('.');
+	const [deviceIDHex, userPIDHex, unknown] = userInfo.split('-');
+	const [firmwareMajor, firmwareMinor, firmwarePatchAndRegion] = firmwareVersion.split('.');
+	const [, firmwarePatch, firmwareRegion] = FIRMWARE_PATCH_REGION_WIIU_REGEX.exec(firmwarePatchAndRegion) || [];
+
+	if (
+		bossLibraryName !== 'PBOSU' ||
+		bossLibraryVersionMajor !== '4' ||
+		bossLibraryVersionMinor !== '0' ||
+		firmwareMajor !== '5' ||
+		firmwareMinor !== '5' ||
+		firmwarePatch !== '6' ||
+		!['J', 'U', 'E'].includes(firmwareRegion) ||
+		deviceIDHex.length !== 8 ||
+		userPIDHex.length !== 8 ||
+		unknown.length !== 16
+	) {
+		return null;
+	}
+
+	let deviceID: number;
+	let userPID: number;
+
+	try {
+		deviceID = parseInt(deviceIDHex, 16);
+	} catch {
+		return null;
+	}
+
+	try {
+		userPID = parseInt(userPIDHex, 16);
+	} catch {
+		return null;
+	}
+
+	return {
+		deviceID,
+		userPID
+	};
+}
+
+function parse3DS(userAgent: string): UserAgentInfo | null {
+	const parts = userAgent.split('/');
+
+	if (parts.length !== 5) {
+		return null;
+	}
+
+	const [bossLibraryInfo, userInfo, firmwareVersion, unknownPart1, unknownPart2] = parts;
+	const [bossLibraryName, bossLibraryVersion] = bossLibraryInfo.split('-');
+	const [bossLibraryVersionMajor, bossLibraryVersionMinor] = bossLibraryVersion.split('.');
+	const [unknownUserInfo1Hex, unknownUserInfo2Hex] = userInfo.split('-');
+	const [firmwareMajor, firmwareMinor, firmwarePatchAndRegion] = firmwareVersion.split('.');
+
+	if (
+		bossLibraryName !== 'PBOS' ||
+		bossLibraryVersionMajor !== '8' ||
+		bossLibraryVersionMinor !== '0' ||
+		firmwareMajor !== '11' ||
+		firmwareMinor !== '17' ||
+		!['0-50J', '0-50U', '0-50E'].includes(firmwarePatchAndRegion) || // TODO - Make this more dynamic?
+		unknownPart1 !== '62452' || // TODO - Is this right?
+		!unknownPart2 || // TODO - Actually check this
+		unknownUserInfo1Hex.length !== 16 ||
+		unknownUserInfo2Hex.length !== 16
+	) {
+		return null;
+	}
+
+	let unknownUserInfo1: number;
+	let unknownUserInfo2: number;
+
+	// TODO - Parse this data? What is this?
+	try {
+		unknownUserInfo1 = parseInt(unknownUserInfo1Hex, 16);
+	} catch {
+		return null;
+	}
+
+	try {
+		unknownUserInfo2 = parseInt(unknownUserInfo2Hex, 16);
+	} catch {
+		return null;
+	}
+
+	// TODO - What is the upper 4 bytes?
+	const localFriendCodeSeed = (unknownUserInfo1 & 0xFFFFFFFF); // * LFCS is the lower 4 bytes
+
+	// TODO - What is the upper 4 bytes?
+	const userPID = (unknownUserInfo2 & 0xFFFFFFFF); // * PID is the lower 4 bytes
+
+	return {
+		localFriendCodeSeed,
+		userPID
+	};
+}