claude-flow-novice
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Claude Flow Novice - Advanced orchestration platform for multi-agent AI workflows with CFN Loop architecture Includes Local RuVector Accelerator and all CFN skills for complete functionality.
662 lines (661 loc) • 21.5 kB
JavaScript
/**
* Audit Logging System for RuVector
*
* Comprehensive audit logging for all sensitive operations:
* - Collection access (read, write, delete)
* - Authentication events (login, token validation, permission checks)
* - Data modifications (inserts, updates, deletes)
* - Configuration changes
* - Error events (access denied, validation failures)
*
* Security Features:
* - Structured audit entries with complete context
* - Multiple storage backends (PostgreSQL, Syslog, JSON file)
* - Tamper-evident logging with checksums
* - Query capabilities by actor, resource, time, event type
* - Automatic retention and archival policies
* - Performance optimized with async writes
* - Non-blocking error handling (failures don't impact operations)
*
* CVSS Mitigation: Addresses detection and investigation of security incidents
* Compliance: Supports OWASP Top 10 #9 (Security Logging & Monitoring Failures)
*/ import * as crypto from 'crypto';
import { createLogger } from './logging.js';
const logger = createLogger('audit-logger');
/**
* Comprehensive Audit Logger
*
* Provides structured audit logging with multiple backends,
* tamper-evident checksums, and query capabilities.
*/ export class AuditLogger {
enabled;
backend;
file_path;
retention_days;
archive_after_days;
enable_checksums;
database_pool;
lastChecksum = '';
entryBuffer = [];
flushInterval = null;
constructor(config = {}){
this.enabled = config.enabled ?? true;
this.backend = config.backend ?? 'postgres';
this.file_path = config.file_path ?? './audit-logs.jsonl';
this.retention_days = config.retention_days ?? 90;
this.archive_after_days = config.archive_after_days ?? 30;
this.enable_checksums = config.enable_checksums ?? true;
this.database_pool = config.database_pool;
if (this.enabled) {
this.initializeBackend();
this.startFlushInterval();
}
logger.info('Audit logger initialized', {
backend: this.backend,
enabled: this.enabled,
retention_days: this.retention_days
});
}
/**
* Initialize the audit logging backend
*/ async initializeBackend() {
try {
switch(this.backend){
case 'postgres':
await this.initPostgresBackend();
break;
case 'syslog':
// Syslog initialization (system-level, no setup needed)
logger.info('Syslog backend initialized');
break;
case 'file':
// File backend initialization (no setup needed)
logger.info('File backend initialized', {
path: this.file_path
});
break;
}
} catch (error) {
logger.error('Failed to initialize audit backend', {
error,
backend: this.backend
});
// Don't fail startup, fall back to file logging
this.backend = 'file';
}
}
/**
* Initialize PostgreSQL backend
*/ async initPostgresBackend() {
if (!this.database_pool) {
logger.warn('PostgreSQL backend requested but no database pool provided');
return;
}
const createTableSQL = `
CREATE TABLE IF NOT EXISTS audit_logs (
id UUID PRIMARY KEY,
timestamp TIMESTAMP WITH TIME ZONE NOT NULL,
event_type VARCHAR(20) NOT NULL,
actor_id VARCHAR(255) NOT NULL,
actor_type VARCHAR(20) NOT NULL,
actor_role VARCHAR(255) NOT NULL,
collection VARCHAR(255) NOT NULL,
document_id VARCHAR(255),
operation_count INTEGER,
action VARCHAR(500) NOT NULL,
result VARCHAR(20) NOT NULL,
error_message TEXT,
ip_address INET,
user_agent TEXT,
metadata JSONB,
checksum VARCHAR(64),
previous_checksum VARCHAR(64),
created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP,
INDEX idx_actor_id (actor_id),
INDEX idx_collection (collection),
INDEX idx_event_type (event_type),
INDEX idx_timestamp (timestamp),
INDEX idx_result (result)
);
`;
try {
await this.database_pool.query(createTableSQL);
logger.info('Audit logs table initialized');
} catch (error) {
logger.error('Failed to create audit logs table', {
error
});
}
}
/**
* Log an audit event
*/ async logAuditEvent(entry) {
if (!this.enabled) {
return;
}
try {
const auditEntry = {
id: crypto.randomUUID(),
...entry,
timestamp: entry.timestamp || new Date()
};
// Add to buffer for batching
this.entryBuffer.push(auditEntry);
// Flush if buffer gets large
if (this.entryBuffer.length >= 100) {
await this.flush();
}
logger.debug('Audit event logged', {
event_type: entry.event_type,
actor: entry.actor.id,
collection: entry.resource.collection
});
} catch (error) {
// Non-blocking error - don't fail the operation
logger.error('Failed to log audit event', {
error
});
}
}
/**
* Log an access event (READ, WRITE, DELETE)
*/ async logAccessEvent(actor, collection, operation, result, options) {
await this.logAuditEvent({
event_type: operation,
actor,
resource: {
collection,
document_id: options?.document_id,
count: options?.count
},
action: `${operation} on collection ${collection}`,
result,
error: options?.error,
ip_address: options?.ip_address,
metadata: options?.metadata
});
}
/**
* Log an authentication event
*/ async logAuthEvent(actor, action, result, options) {
await this.logAuditEvent({
event_type: 'AUTH',
actor,
resource: {
collection: 'auth'
},
action,
result,
error: options?.error,
ip_address: options?.ip_address,
metadata: options?.metadata
});
}
/**
* Log a configuration change
*/ async logConfigChange(actor, action, result, options) {
await this.logAuditEvent({
event_type: 'CONFIG',
actor,
resource: {
collection: 'config'
},
action,
result,
error: options?.error,
metadata: options?.metadata
});
}
/**
* Log an error event (access denied, validation failures)
*/ async logErrorEvent(actor, action, error, options) {
await this.logAuditEvent({
event_type: 'ERROR',
actor,
resource: {
collection: options?.collection ?? 'system'
},
action,
result: 'FAILURE',
error,
ip_address: options?.ip_address,
metadata: options?.metadata
});
}
/**
* Query audit logs by actor
*/ async queryByActor(actor_id, limit = 1000) {
return this.queryAuditLog({
actor_id,
limit,
offset: 0
});
}
/**
* Query audit logs by resource
*/ async queryByResource(collection, limit = 1000) {
return this.queryAuditLog({
collection,
limit,
offset: 0
});
}
/**
* Query audit logs by time range
*/ async queryByTimeRange(start, end, limit = 10000) {
return this.queryAuditLog({
start_time: start,
end_time: end,
limit,
offset: 0
});
}
/**
* Query audit logs with filters
*/ async queryAuditLog(filters) {
if (!this.enabled) {
return [];
}
try {
switch(this.backend){
case 'postgres':
return await this.queryPostgres(filters);
case 'file':
return await this.queryFile(filters);
default:
logger.warn('Query not supported for syslog backend');
return [];
}
} catch (error) {
logger.error('Failed to query audit logs', {
error,
filters
});
return [];
}
}
/**
* Query PostgreSQL backend
*/ async queryPostgres(filters) {
if (!this.database_pool) {
return [];
}
try {
let query = 'SELECT * FROM audit_logs WHERE 1=1';
const params = [];
let paramCount = 1;
if (filters.actor_id) {
query += ` AND actor_id = $${paramCount++}`;
params.push(filters.actor_id);
}
if (filters.collection) {
query += ` AND collection = $${paramCount++}`;
params.push(filters.collection);
}
if (filters.event_type) {
query += ` AND event_type = $${paramCount++}`;
params.push(filters.event_type);
}
if (filters.result) {
query += ` AND result = $${paramCount++}`;
params.push(filters.result);
}
if (filters.start_time) {
query += ` AND timestamp >= $${paramCount++}`;
params.push(filters.start_time);
}
if (filters.end_time) {
query += ` AND timestamp <= $${paramCount++}`;
params.push(filters.end_time);
}
query += ` ORDER BY timestamp DESC`;
if (filters.limit) {
query += ` LIMIT $${paramCount++}`;
params.push(filters.limit);
}
if (filters.offset) {
query += ` OFFSET $${paramCount++}`;
params.push(filters.offset);
}
const result = await this.database_pool.query(query, params);
return result.rows.map((row)=>this.rowToEntry(row));
} catch (error) {
logger.error('PostgreSQL query failed', {
error
});
return [];
}
}
/**
* Query file backend
*/ async queryFile(filters) {
// This would read from JSONL file
// Implementation depends on filesystem access library
logger.debug('File backend query (placeholder)', {
filters
});
return [];
}
/**
* Convert database row to AuditEntry
*/ rowToEntry(row) {
return {
id: row.id,
timestamp: new Date(row.timestamp),
event_type: row.event_type,
actor: {
id: row.actor_id,
type: row.actor_type,
role: row.actor_role
},
resource: {
collection: row.collection,
document_id: row.document_id,
count: row.operation_count
},
action: row.action,
result: row.result,
error: row.error_message,
ip_address: row.ip_address,
user_agent: row.user_agent,
metadata: row.metadata
};
}
/**
* Analyze access patterns for threat detection
*/ async getAccessPatterns(collection, timeWindowMinutes = 60) {
const startTime = new Date(Date.now() - timeWindowMinutes * 60 * 1000);
const endTime = new Date();
const entries = await this.queryByTimeRange(startTime, endTime, 10000);
// Group by actor
const patterns = new Map();
for (const entry of entries){
if (entry.resource.collection === collection) {
const key = entry.actor.id;
if (!patterns.has(key)) {
patterns.set(key, {
id: crypto.randomUUID(),
actor_id: entry.actor.id,
collection,
access_count: 0,
operations: [],
time_period: {
start: startTime,
end: endTime
},
risk_score: 0,
anomalies: []
});
}
const pattern = patterns.get(key);
pattern.access_count++;
if (!pattern.operations.includes(entry.event_type)) {
pattern.operations.push(entry.event_type);
}
}
}
// Calculate risk scores
for (const pattern of patterns.values()){
pattern.risk_score = this.calculateRiskScore(pattern);
pattern.anomalies = this.detectAnomalies(pattern);
}
return Array.from(patterns.values());
}
/**
* Calculate risk score for access pattern
*/ calculateRiskScore(pattern) {
let score = 0;
// High access frequency increases risk
if (pattern.access_count > 1000) {
score += 0.3;
} else if (pattern.access_count > 100) {
score += 0.1;
}
// Mixed operations on same resource is risky
if (pattern.operations.length > 2) {
score += 0.2;
}
// DELETE operations increase risk
if (pattern.operations.includes('DELETE')) {
score += 0.3;
}
return Math.min(score, 1.0);
}
/**
* Detect anomalies in access pattern
*/ detectAnomalies(pattern) {
const anomalies = [];
if (pattern.access_count > 1000) {
anomalies.push('Unusually high access frequency');
}
if (pattern.operations.includes('DELETE') && pattern.access_count > 10) {
anomalies.push('Bulk delete operations detected');
}
if (pattern.operations.length > 3) {
anomalies.push('Multiple operation types on single resource');
}
return anomalies;
}
/**
* Export audit logs as JSON
*/ async exportAuditLog(format, filters) {
try {
const logs = await this.queryAuditLog(filters ?? {});
if (format === 'json') {
return JSON.stringify(logs, null, 2);
} else if (format === 'csv') {
return this.convertToCSV(logs);
}
return '';
} catch (error) {
logger.error('Failed to export audit logs', {
error,
format
});
return '';
}
}
/**
* Convert audit entries to CSV format
*/ convertToCSV(entries) {
if (entries.length === 0) {
return '';
}
const headers = [
'timestamp',
'event_type',
'actor_id',
'actor_type',
'actor_role',
'collection',
'document_id',
'action',
'result',
'error',
'ip_address'
];
const rows = entries.map((entry)=>[
entry.timestamp.toISOString(),
entry.event_type,
entry.actor.id,
entry.actor.type,
entry.actor.role,
entry.resource.collection,
entry.resource.document_id ?? '',
entry.action,
entry.result,
entry.error ?? '',
entry.ip_address ?? ''
]);
const csvContent = [
headers.join(','),
...rows.map((row)=>row.map((cell)=>`"${String(cell).replace(/"/g, '""')}"`).join(','))
].join('\n');
return csvContent;
}
/**
* Flush buffered entries to storage
*/ async flush() {
if (this.entryBuffer.length === 0) {
return;
}
const entriesToFlush = [
...this.entryBuffer
];
this.entryBuffer = [];
try {
for (const entry of entriesToFlush){
await this.writeEntry(entry);
}
logger.debug('Audit log flushed', {
count: entriesToFlush.length
});
} catch (error) {
logger.error('Failed to flush audit log', {
error
});
}
}
/**
* Write entry to backend
*/ async writeEntry(entry) {
try {
switch(this.backend){
case 'postgres':
await this.writePostgres(entry);
break;
case 'file':
await this.writeFile(entry);
break;
case 'syslog':
await this.writeSyslog(entry);
break;
}
} catch (error) {
logger.error('Failed to write audit entry', {
error,
backend: this.backend
});
}
}
/**
* Write entry to PostgreSQL
*/ async writePostgres(entry) {
if (!this.database_pool) {
return;
}
const checksum = this.enable_checksums ? this.calculateChecksum(entry) : undefined;
const query = `
INSERT INTO audit_logs (
id, timestamp, event_type, actor_id, actor_type, actor_role,
collection, document_id, operation_count, action, result,
error_message, ip_address, user_agent, metadata, checksum, previous_checksum
) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17)
`;
const values = [
entry.id,
entry.timestamp,
entry.event_type,
entry.actor.id,
entry.actor.type,
entry.actor.role,
entry.resource.collection,
entry.resource.document_id,
entry.resource.count,
entry.action,
entry.result,
entry.error,
entry.ip_address,
entry.user_agent,
JSON.stringify(entry.metadata ?? {}),
checksum,
this.lastChecksum
];
await this.database_pool.query(query, values);
if (checksum) {
this.lastChecksum = checksum;
}
}
/**
* Write entry to file
*/ async writeFile(entry) {
// This would append to JSONL file
// Implementation depends on filesystem access library
logger.debug('File backend write (placeholder)', {
entry_id: entry.id
});
}
/**
* Write entry to syslog
*/ async writeSyslog(entry) {
// This would write to syslog via system logger
const message = `[${entry.event_type}] ${entry.actor.id} ${entry.action} on ${entry.resource.collection}: ${entry.result}`;
logger.info(message);
}
/**
* Calculate checksum for tamper detection
*/ calculateChecksum(entry) {
const data = JSON.stringify(entry) + (this.lastChecksum || '');
return crypto.createHash('sha256').update(data).digest('hex');
}
/**
* Start periodic flush interval
*/ startFlushInterval() {
// Flush every 30 seconds
this.flushInterval = setInterval(async ()=>{
await this.flush();
}, 30000);
}
/**
* Clean up resources
*/ async shutdown() {
if (this.flushInterval) {
clearInterval(this.flushInterval);
}
await this.flush();
logger.info('Audit logger shut down');
}
/**
* Delete old audit logs based on retention policy
*/ async purgeOldLogs() {
if (!this.enabled) {
return;
}
try {
const cutoffDate = new Date(Date.now() - this.retention_days * 24 * 60 * 60 * 1000);
switch(this.backend){
case 'postgres':
await this.purgePostgres(cutoffDate);
break;
}
logger.info('Old audit logs purged', {
cutoff_date: cutoffDate
});
} catch (error) {
logger.error('Failed to purge old audit logs', {
error
});
}
}
/**
* Purge old logs from PostgreSQL
*/ async purgePostgres(cutoffDate) {
if (!this.database_pool) {
return;
}
const query = 'DELETE FROM audit_logs WHERE timestamp < $1';
await this.database_pool.query(query, [
cutoffDate
]);
}
}
/**
* Create a singleton audit logger instance
*/ let auditLoggerInstance = null;
export function getAuditLogger(config) {
if (!auditLoggerInstance) {
auditLoggerInstance = new AuditLogger(config);
}
return auditLoggerInstance;
}
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