Obsidian Elite RAG MCP Server

import crypto from 'crypto'; export class AuthManager { private validTokens: Set<string>; private tokenExpiry: Map<string, number>; constructor() { this.validTokens = new Set(); this.tokenExpiry = new Map(); } /** * Validate an authentication token */ validateToken(token: string | undefined, expectedToken?: string): boolean { if (!expectedToken) { // No authentication required return true; } if (!token) { return false; } // Check static token if (token === expectedToken) { return true; } // Check dynamic tokens if (this.validTokens.has(token)) { const expiry = this.tokenExpiry.get(token); if (expiry && expiry > Date.now()) { return true; } else { // Token expired this.validTokens.delete(token); this.tokenExpiry.delete(token); return false; } } return false; } /** * Generate a new authentication token */ generateToken(expiryHours: number = 24): string { const token = crypto.randomBytes(32).toString('hex'); const expiryTime = Date.now() + (expiryHours * 60 * 60 * 1000); this.validTokens.add(token); this.tokenExpiry.set(token, expiryTime); // Clean up expired tokens this.cleanupExpiredTokens(); return token; } /** * Revoke a token */ revokeToken(token: string): void { this.validTokens.delete(token); this.tokenExpiry.delete(token); } /** * Clean up expired tokens */ private cleanupExpiredTokens(): void { const now = Date.now(); for (const [token, expiry] of this.tokenExpiry.entries()) { if (expiry <= now) { this.validTokens.delete(token); this.tokenExpiry.delete(token); } } } /** * Hash a password or token for secure storage */ static hashToken(token: string): string { return crypto.createHash('sha256').update(token).digest('hex'); } /** * Compare a plain token with a hashed token */ static compareTokens(plainToken: string, hashedToken: string): boolean { const hashedPlainToken = AuthManager.hashToken(plainToken); return crypto.timingSafeEqual( Buffer.from(hashedPlainToken), Buffer.from(hashedToken) ); } }