# Security Guide

Comprehensive security features and best practices for Sonora.

# Overview

Sonora implements multiple layers of security to protect against various threats including code injection, data breaches, and malicious plugins.

# Credential Management

# Encrypted Vault

from sonora.security import CredentialManager

# Initialize with master key
vault = CredentialManager("your_master_key")

# Store credentials
vault.store_credential("lavalink_password", "secret_password")
vault.store_credential("discord_token", "bot_token")

# Retrieve securely
password = vault.retrieve_credential("lavalink_password")

# Key Rotation

# Rotate master key
new_vault = CredentialManager("new_master_key")
new_vault.store_credential("lavalink_password", password)

# Update configuration
config["master_key"] = "new_master_key"

# Plugin Security

# Code Validation

from sonora.security import PluginFirewall

firewall = PluginFirewall()

# Validate plugin code
violations = firewall.validate_code(plugin_source)
if violations:
    raise SecurityError(f"Plugin rejected: {violations}")

# Sandbox Execution

from sonora.security import PluginSandbox

sandbox = PluginSandbox()

# Execute plugin safely
result = await sandbox.execute(plugin_code, function_name="main")

# Permission System

# Define plugin permissions
plugin = Plugin(
    name="analytics",
    permissions=["track.read", "queue.read"]
)

# Check permissions at runtime
if plugin.has_permission("track.modify"):
    await modify_track(track)

# Data Protection

# Secure Deserialization

from sonora.security import SecureDeserializationLayer

deserializer = SecureDeserializationLayer()

# Safe JSON loading
data = deserializer.safe_json_loads(json_string)

# Input Validation

def validate_track_data(data):
    required_fields = ["title", "author", "uri"]
    for field in required_fields:
        if field not in data:
            raise ValidationError(f"Missing {field}")

    # Sanitize inputs
    data["title"] = sanitize_string(data["title"])
    return data

# Network Security

# Connection Encryption

# Force HTTPS/WSS
node_config = {
    "host": "lavalink.example.com",
    "port": 443,
    "password": "password",
    "secure": True  # Forces WSS
}

# Certificate Validation

import ssl

# Custom SSL context
ssl_context = ssl.create_default_context()
ssl_context.check_hostname = True
ssl_context.verify_mode = ssl.CERT_REQUIRED

# Use in connections
connector = aiohttp.TCPConnector(ssl=ssl_context)

# Runtime Protection

# Exploit Guards

# Prevent common exploits
def guard_against_injection(query):
    blocked_patterns = [";", "--", "/*", "*/", "xp_", "sp_"]
    for pattern in blocked_patterns:
        if pattern in query:
            raise SecurityError("Potential SQL injection")

# Resource limits
MAX_REQUEST_SIZE = 1024 * 1024  # 1MB
MAX_CONCURRENT_REQUESTS = 100

# Memory Protection

# Prevent memory exhaustion
import resource

# Set memory limits
resource.setrlimit(resource.RLIMIT_AS, (512 * 1024 * 1024, 512 * 1024 * 1024))  # 512MB

# Monitor memory usage
def check_memory_usage():
    import psutil
    process = psutil.Process()
    memory_percent = process.memory_percent()
    if memory_percent > 80:
        logger.warning("High memory usage detected")

# Authentication & Authorization

# Bot Token Security

# Never log tokens
logger.info("Bot started")  # Don't log token

# Use environment variables
token = os.getenv("DISCORD_TOKEN")
if not token:
    raise ConfigurationError("Discord token not found")

# API Key Management

# Rotate API keys regularly
class KeyManager:
    def __init__(self):
        self.keys = {}
        self.key_ttl = 3600  # 1 hour

    def generate_key(self, service):
        key = secrets.token_urlsafe(32)
        self.keys[service] = {
            "key": key,
            "created": time.time()
        }
        return key

    def validate_key(self, service, key):
        if service not in self.keys:
            return False

        key_data = self.keys[service]
        if time.time() - key_data["created"] > self.key_ttl:
            del self.keys[service]
            return False

        return key_data["key"] == key

# Monitoring & Auditing

# Security Logging

import logging

# Security-specific logger
security_logger = logging.getLogger("sonora.security")
security_logger.setLevel(logging.WARNING)

def log_security_event(event_type, details):
    security_logger.warning(f"Security event: {event_type}", extra={
        "event_type": event_type,
        "details": details,
        "timestamp": time.time(),
        "ip": get_client_ip()
    })

# Intrusion Detection

class IntrusionDetector:
    def __init__(self):
        self.failed_attempts = {}
        self.block_threshold = 5

    def record_failed_attempt(self, ip):
        self.failed_attempts[ip] = self.failed_attempts.get(ip, 0) + 1

        if self.failed_attempts[ip] >= self.block_threshold:
            self.block_ip(ip)
            log_security_event("ip_blocked", {"ip": ip})

    def is_blocked(self, ip):
        return ip in self.failed_attempts and self.failed_attempts[ip] >= self.block_threshold

# Best Practices

# Development Security

Input Validation: Validate all inputs
Output Encoding: Encode outputs properly
Least Privilege: Use minimal permissions
Fail Safe: Default to secure behavior
Regular Updates: Keep dependencies updated
Code Reviews: Review security-critical code
Testing: Include security tests

# Operational Security

Monitor Logs: Watch for suspicious activity
Regular Backups: Backup encrypted data
Key Management: Rotate keys regularly
Access Control: Limit system access
Network Security: Use firewalls and VPNs
Incident Response: Have response plans
Compliance: Meet security standards

# Plugin Security

Code Review: Review plugin code
Permission Audit: Check permissions regularly
Sandbox Testing: Test in isolated environment
Version Control: Track plugin versions
Dependency Scanning: Check for vulnerabilities
Update Policy: Keep plugins updated
Revocation: Ability to disable compromised plugins

# Incident Response

# Detection

# Automated detection
def detect_anomalies():
    # Check for unusual patterns
    if player.queue.length > 1000:
        log_security_event("queue_flood", {"length": player.queue.length})

    if len(active_connections) > MAX_CONNECTIONS:
        log_security_event("connection_flood", {"count": len(active_connections)})

# Response

def emergency_shutdown():
    # Graceful shutdown
    await client.close()

    # Notify administrators
    await send_alert("Emergency shutdown triggered")

    # Log incident
    log_security_event("emergency_shutdown", {
        "reason": "security_incident",
        "timestamp": time.time()
    })

# Recovery

async def secure_recovery():
    # Validate system state
    await validate_system_integrity()

    # Restore from clean backup
    await restore_from_backup()

    # Reinitialize security
    await reinitialize_security()

# Compliance

# Data Protection

Encrypt sensitive data at rest and in transit
Implement proper access controls
Regular security audits
Data minimization principles

# Privacy

Collect only necessary data
Provide data export/deletion
Transparent data usage
User consent for data collection

This comprehensive security approach ensures Sonora remains secure against various threats while maintaining usability.