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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 | /** * Centralized Audit Logging Module * Single implementation used by all services (API, MCP, CLI, etc.) * Replaces 371 lines of custom audit logic spread across apps * * Handles: * - PostHog event emission (non-blocking) * - Database audit log persistence (non-blocking) * - Structured logging (always succeeds) */ import { logger } from "@snapback/infrastructure"; // PostHog configuration const POSTHOG_API_KEY = process.env.POSTHOG_API_KEY || ""; const POSTHOG_HOST = process.env.POSTHOG_HOST || "https://us.posthog.com"; const POSTHOG_ENABLED = !!POSTHOG_API_KEY; /** * Comprehensive audit event types supported across the system */ export type AuditEventType = // Auth events | "auth.signup" | "auth.signin" | "auth.signout" | "auth.signin_failed" | "auth.password_reset" | "auth.email_verified" // MFA events | "mfa.totp_enabled" | "mfa.totp_disabled" | "mfa.totp_verified" | "mfa.totp_failed" | "mfa.backup_code_used" // Passkey events | "passkey.enrolled" | "passkey.removed" | "passkey.verified" | "passkey.failed" // Session events | "session.created" | "session.refreshed" | "session.expired" | "session.revoked" // Organization events | "org.member_added" | "org.member_removed" | "org.role_changed" | "org.auto_provisioned" | "org.auto_provision_failed" // API key events | "apikey.created" | "apikey.revoked" | "apikey.used" // Step-up events | "stepup.required" | "stepup.success" | "stepup.failed"; /** * Audit event metadata */ export interface AuditEventMetadata { userId?: string; orgId?: string; ip?: string; userAgent?: string; method?: string; path?: string; statusCode?: number; errorMessage?: string; // Custom fields [key: string]: unknown; } /** * Emit event to PostHog (non-blocking) */ async function emitPostHogEvent(eventType: AuditEventType, metadata: AuditEventMetadata): Promise<void> { if (!POSTHOG_ENABLED) { return; } try { const event = { api_key: POSTHOG_API_KEY, event: eventType, distinct_id: metadata.userId || metadata.ip || "anonymous", properties: { ...metadata, $ip: metadata.ip, $set: { email: metadata.userId ? `user_${metadata.userId}` : undefined, }, }, timestamp: new Date().toISOString(), }; const response = await fetch(`${POSTHOG_HOST}/capture/`, { method: "POST", headers: { "Content-Type": "application/json", }, body: JSON.stringify(event), }); if (!response.ok) { logger.error("Failed to emit PostHog event", { eventType, status: response.status, statusText: response.statusText, }); } } catch (error) { logger.error("Error emitting PostHog event", { error, eventType, }); } } /** * Write audit log to database (non-blocking) * Stores audit events in telemetry_events table with event_category='audit' * Uses @snapback/platform DB connection via lazy import to avoid circular deps */ async function writeAuditLog(eventType: AuditEventType, metadata: AuditEventMetadata): Promise<void> { try { // Lazy import to avoid circular dependencies const { db, snapbackSchema } = await import("@snapback/platform"); if (!db) { logger.warn("Database not available for audit logging", { eventType }); return; } const { telemetryEvents } = snapbackSchema; // Write to telemetry_events table with event_category='audit' await db.insert(telemetryEvents).values({ eventType, eventCategory: "audit", userId: metadata.userId, properties: { ip: metadata.ip, userAgent: metadata.userAgent, method: metadata.method, path: metadata.path, statusCode: metadata.statusCode, errorMessage: metadata.errorMessage, ...metadata, // Include any custom fields }, }); logger.debug("Audit log written", { eventType, userId: metadata.userId, orgId: metadata.orgId, }); } catch (error) { logger.error("Failed to write audit log", { error, eventType, metadata, }); // Don't throw - audit logging should not break main flow } } /** * Track authentication event * Emits to PostHog and writes to audit log (both non-blocking) */ export async function trackEvent(eventType: AuditEventType, metadata: AuditEventMetadata): Promise<void> { // Log locally (always succeeds) logger.info("Audit event", { eventType, userId: metadata.userId, orgId: metadata.orgId, path: metadata.path, }); // Emit to PostHog (non-blocking) emitPostHogEvent(eventType, metadata).catch((error) => { logger.error("PostHog emit failed", { error, eventType }); }); // Write to audit log (non-blocking) writeAuditLog(eventType, metadata).catch((error) => { logger.error("Audit log write failed", { error, eventType }); }); } /** * Track failed authentication attempt */ export async function trackFailedAuth( type: "signin" | "totp" | "passkey", metadata: AuditEventMetadata, ): Promise<void> { const eventMap = { signin: "auth.signin_failed" as AuditEventType, totp: "mfa.totp_failed" as AuditEventType, passkey: "passkey.failed" as AuditEventType, }; await trackEvent(eventMap[type], metadata); // Could trigger additional actions: // - Check for abuse patterns // - Rate limit if needed // - Alert security team if excessive } /** * Helper type for better-auth database hooks */ export interface DatabaseHookContext { eventType: AuditEventType; metadata: AuditEventMetadata; } /** * Adapter for better-auth database hooks * Provides helper function for use in databaseHooks configuration */ export function createDatabaseHookHandler(eventType: AuditEventType) { return async (data: any) => { await trackEvent(eventType, { userId: data.userId || data.user?.id, orgId: data.organizationId || data.organization?.id, timestamp: new Date().toISOString(), ...data, }); }; } |