import pyotp
import hashlib
from datetime import datetime, timedelta

class MCPAuthenticator:
    def __init__(self):
        self.sessions = {}
        self.mfa_secrets = {}  # Stored securely, not in memory

    async def authenticate(self, username: str, password: str, mfa_token: str) -> bool:
        # Verify password hash
        if not self.verify_password(username, password):
            return False

        # Verify MFA token
        if not self.verify_mfa(username, mfa_token):
            return False

        # Create secure session
        session_token = self.create_session(username)
        return session_token

    def verify_mfa(self, username: str, token: str) -> bool:
        secret = self.get_mfa_secret(username)
        totp = pyotp.TOTP(secret)
        return totp.verify(token, valid_window=1)

    def create_session(self, username: str) -> str:
        session_token = secrets.token_urlsafe(32)
        self.sessions[session_token] = {
            'username': username,
            'created': datetime.utcnow(),
            'expires': datetime.utcnow() + timedelta(hours=8)
        }
        return session_token

class MCPRoleManager:
    def __init__(self):
        self.roles = {
            'admin': {
                'permissions': ['*'],  # All permissions
                'resources': ['*']     # All resources
            },
            'analyst': {
                'permissions': ['read', 'query'],
                'resources': ['database', 'reports']
            },
            'viewer': {
                'permissions': ['read'],
                'resources': ['reports']
            }
        }

    def check_permission(self, user_role: str, action: str, resource: str) -> bool:
        role_config = self.roles.get(user_role, {})
        permissions = role_config.get('permissions', [])
        resources = role_config.get('resources', [])

        # Check wildcard permissions
        if '*' in permissions or '*' in resources:
            return True

        # Check specific permissions
        return action in permissions and resource in resources

    async def authorize_tool_call(self, user: str, tool_name: str, args: dict):
        user_role = await self.get_user_role(user)

        if not self.check_permission(user_role, 'execute', tool_name):
            raise PermissionError(f"User {user} not authorized for tool {tool_name}")

        # Additional resource-specific checks
        if tool_name == 'database_query':
            await self.check_database_access(user, args.get('database'))

import jwt
from datetime import datetime, timedelta

class MCPOAuthHandler:
    def __init__(self, client_id: str, client_secret: str, jwt_secret: str):
        self.client_id = client_id
        self.client_secret = client_secret
        self.jwt_secret = jwt_secret

    async def exchange_code_for_token(self, auth_code: str) -> dict:
        """Exchange authorization code for access token"""
        # Verify auth code with OAuth provider
        user_info = await self.verify_auth_code(auth_code)

        # Generate JWT access token
        payload = {
            'sub': user_info['user_id'],
            'email': user_info['email'],
            'roles': user_info['roles'],
            'exp': datetime.utcnow() + timedelta(hours=1),
            'iat': datetime.utcnow()
        }

        access_token = jwt.encode(payload, self.jwt_secret, algorithm='HS256')

        return {
            'access_token': access_token,
            'token_type': 'Bearer',
            'expires_in': 3600,
            'scope': ' '.join(user_info['roles'])
        }

    async def validate_token(self, token: str) -> dict:
        """Validate and decode JWT token"""
        try:
            payload = jwt.decode(token, self.jwt_secret, algorithms=['HS256'])
            return payload
        except jwt.ExpiredSignatureError:
            raise AuthenticationError("Token has expired")
        except jwt.InvalidTokenError:
            raise AuthenticationError("Invalid token")

import aiofiles
from cryptography.fernet import Fernet
from cryptography.hazmat.primitives import hashes
from cryptography.hazmat.primitives.kdf.pbkdf2 import PBKDF2HMAC
import os
import base64

class MCPDataProtection:
    def __init__(self, encryption_key: bytes):
        self.fernet = Fernet(encryption_key)

    @staticmethod
    def generate_key_from_password(password: str, salt: bytes) -> bytes:
        """Generate encryption key from password"""
        kdf = PBKDF2HMAC(
            algorithm=hashes.SHA256(),
            length=32,
            salt=salt,
            iterations=100000,
        )
        key = base64.urlsafe_b64encode(kdf.derive(password.encode()))
        return key

    async def encrypt_sensitive_data(self, data: str) -> str:
        """Encrypt sensitive data before storage"""
        encrypted_data = self.fernet.encrypt(data.encode())
        return base64.urlsafe_b64encode(encrypted_data).decode()

    async def decrypt_sensitive_data(self, encrypted_data: str) -> str:
        """Decrypt sensitive data after retrieval"""
        encrypted_bytes = base64.urlsafe_b64decode(encrypted_data.encode())
        decrypted_data = self.fernet.decrypt(encrypted_bytes)
        return decrypted_data.decode()

    async def secure_file_storage(self, filepath: str, content: str):
        """Store files with encryption"""
        encrypted_content = await self.encrypt_sensitive_data(content)
        async with aiofiles.open(filepath, 'w') as f:
            await f.write(encrypted_content)

import os
from typing import Dict, Any
import boto3

class SecureConfigManager:
    def __init__(self):
        self.config_cache = {}
        self.secrets_client = boto3.client('secretsmanager')

    async def get_secret(self, secret_name: str) -> str:
        """Retrieve secret from AWS Secrets Manager"""
        try:
            response = self.secrets_client.get_secret_value(SecretId=secret_name)
            return response['SecretString']
        except Exception as e:
            raise ConfigurationError(f"Failed to retrieve secret {secret_name}: {e}")

    def get_config(self, key: str, default: Any = None) -> Any:
        """Get configuration with environment variable override"""
        # Check environment first
        env_value = os.environ.get(key.upper())
        if env_value is not None:
            return env_value

        # Check cached config
        if key in self.config_cache:
            return self.config_cache[key]

        # Return default
        return default

    async def load_database_credentials(self) -> Dict[str, str]:
        """Load database credentials securely"""
        if self.is_production():
            # Load from secrets manager in production
            db_secret = await self.get_secret('mcp/database')
            return json.loads(db_secret)
        else:
            # Load from environment in development
            return {
                'host': self.get_config('DB_HOST', 'localhost'),
                'username': self.get_config('DB_USERNAME', 'dev'),
                'password': self.get_config('DB_PASSWORD', 'dev'),
                'database': self.get_config('DB_NAME', 'mcp_dev')
            }

import ssl
import asyncio
from aiohttp import web, ClientSession

class SecureMCPServer:
    def __init__(self):
        self.ssl_context = self.create_ssl_context()

    def create_ssl_context(self) -> ssl.SSLContext:
        """Create secure SSL context"""
        context = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)

        # Load certificates
        context.load_cert_chain(
            certfile='/path/to/cert.pem',
            keyfile='/path/to/key.pem'
        )

        # Security settings
        context.minimum_version = ssl.TLSVersion.TLSv1_2
        context.set_ciphers('ECDHE+AESGCM:ECDHE+CHACHA20:DHE+AESGCM:DHE+CHACHA20:!aNULL:!MD5:!DSS')

        return context

    async def start_server(self, host: str = '0.0.0.0', port: int = 8443):
        """Start secure MCP server"""
        app = web.Application()
        app.router.add_post('/mcp', self.handle_mcp_request)

        runner = web.AppRunner(app)
        await runner.setup()

        site = web.TCPSite(
            runner,
            host,
            port,
            ssl_context=self.ssl_context
        )
        await site.start()

    async def make_secure_request(self, url: str, data: dict):
        """Make secure requests to external services"""
        ssl_context = ssl.create_default_context()
        ssl_context.check_hostname = True
        ssl_context.verify_mode = ssl.CERT_REQUIRED

        async with ClientSession(
            connector=aiohttp.TCPConnector(ssl=ssl_context)
        ) as session:
            async with session.post(url, json=data) as response:
                return await response.json()

class NetworkSecurityManager:
    def __init__(self):
        self.allowed_networks = [
            '10.0.0.0/8',      # Internal network
            '172.16.0.0/12',   # Private network
            '192.168.0.0/16'   # Local network
        ]
        self.firewall_rules = self.load_firewall_rules()

    def validate_client_ip(self, client_ip: str) -> bool:
        """Validate client IP against allowed networks"""
        import ipaddress

        client_addr = ipaddress.ip_address(client_ip)

        for network in self.allowed_networks:
            network_obj = ipaddress.ip_network(network)
            if client_addr in network_obj:
                return True

        return False

    async def apply_rate_limiting(self, client_ip: str) -> bool:
        """Apply rate limiting per client IP"""
        current_time = time.time()
        window_start = current_time - 60  # 1-minute window

        # Count requests in the current window
        request_count = await self.count_requests(client_ip, window_start)

        if request_count > 100:  # Max 100 requests per minute
            return False

        await self.record_request(client_ip, current_time)
        return True

import json
import asyncio
from datetime import datetime
from typing import Dict, Any

class MCPAuditLogger:
    def __init__(self, log_level: str = 'INFO'):
        self.log_level = log_level
        self.audit_queue = asyncio.Queue()
        self.setup_audit_processor()

    async def log_request(self, request_data: Dict[str, Any]):
        """Log incoming MCP request"""
        audit_entry = {
            'timestamp': datetime.utcnow().isoformat(),
            'event_type': 'mcp_request',
            'user_id': request_data.get('user_id'),
            'tool_name': request_data.get('tool_name'),
            'parameters': self.sanitize_parameters(request_data.get('parameters', {})),
            'client_ip': request_data.get('client_ip'),
            'session_id': request_data.get('session_id')
        }

        await self.audit_queue.put(audit_entry)

    async def log_response(self, request_id: str, response_data: Dict[str, Any], execution_time: float):
        """Log MCP response"""
        audit_entry = {
            'timestamp': datetime.utcnow().isoformat(),
            'event_type': 'mcp_response',
            'request_id': request_id,
            'success': response_data.get('success', False),
            'error_message': response_data.get('error'),
            'execution_time_ms': execution_time * 1000,
            'data_size_bytes': len(json.dumps(response_data))
        }

        await self.audit_queue.put(audit_entry)

    def sanitize_parameters(self, params: Dict[str, Any]) -> Dict[str, Any]:
        """Remove sensitive data from parameters"""
        sanitized = {}
        sensitive_keys = ['password', 'api_key', 'token', 'secret']

        for key, value in params.items():
            if any(sensitive in key.lower() for sensitive in sensitive_keys):
                sanitized[key] = '[REDACTED]'
            else:
                sanitized[key] = value

        return sanitized

    async def audit_processor(self):
        """Process audit entries"""
        while True:
            try:
                audit_entry = await self.audit_queue.get()
                await self.write_audit_log(audit_entry)
                self.audit_queue.task_done()
            except Exception as e:
                print(f"Audit logging error: {e}")

    async def write_audit_log(self, entry: Dict[str, Any]):
        """Write audit entry to persistent storage"""
        # Write to file, database, or SIEM system
        with open('/var/log/mcp/audit.log', 'a') as f:
            f.write(json.dumps(entry) + '\n')

class ComplianceManager:
    def __init__(self):
        self.compliance_rules = self.load_compliance_rules()
        self.data_retention_policies = self.load_retention_policies()

    async def check_data_privacy(self, request: Dict[str, Any]) -> bool:
        """Check GDPR compliance for data requests"""
        # Verify data subject consent
        if not await self.verify_consent(request.get('user_id')):
            raise ComplianceError("No valid consent for data processing")

        # Check data minimization
        if not self.is_data_minimal(request):
            raise ComplianceError("Request violates data minimization principle")

        # Log processing activity
        await self.log_processing_activity(request)

        return True

    async def apply_retention_policy(self, data_type: str, created_date: datetime):
        """Apply data retention policies"""
        retention_period = self.data_retention_policies.get(data_type, timedelta(days=365))

        if datetime.utcnow() - created_date > retention_period:
            await self.schedule_data_deletion(data_type, created_date)

    async def handle_data_subject_request(self, request_type: str, user_id: str):
        """Handle GDPR data subject requests"""
        if request_type == 'access':
            return await self.export_user_data(user_id)
        elif request_type == 'delete':
            return await self.delete_user_data(user_id)
        elif request_type == 'portability':
            return await self.export_portable_data(user_id)

import asyncio
from collections import defaultdict, deque
from datetime import datetime, timedelta

class SecurityMonitor:
    def __init__(self):
        self.failed_attempts = defaultdict(deque)
        self.suspicious_patterns = []
        self.alert_threshold = 5
        self.time_window = timedelta(minutes=5)

    async def monitor_authentication(self, username: str, success: bool, ip_address: str):
        """Monitor authentication attempts"""
        current_time = datetime.utcnow()

        if not success:
            # Track failed attempts
            self.failed_attempts[username].append({
                'timestamp': current_time,
                'ip_address': ip_address
            })

            # Clean old entries
            while (self.failed_attempts[username] and
                   current_time - self.failed_attempts[username][0]['timestamp'] > self.time_window):
                self.failed_attempts[username].popleft()

            # Check for brute force attack
            if len(self.failed_attempts[username]) >= self.alert_threshold:
                await self.trigger_security_alert('brute_force', {
                    'username': username,
                    'ip_address': ip_address,
                    'attempts': len(self.failed_attempts[username])
                })

    async def detect_anomalous_behavior(self, user_id: str, action: str, parameters: dict):
        """Detect unusual user behavior"""
        user_profile = await self.get_user_behavior_profile(user_id)

        # Check for unusual access patterns
        if self.is_unusual_time(user_profile.get('typical_hours', [])):
            await self.log_security_event('unusual_time_access', user_id)

        # Check for privilege escalation attempts
        if self.is_privilege_escalation(action, user_profile.get('typical_actions', [])):
            await self.trigger_security_alert('privilege_escalation', {
                'user_id': user_id,
                'action': action
            })

    async def trigger_security_alert(self, alert_type: str, details: dict):
        """Trigger security alert"""
        alert = {
            'timestamp': datetime.utcnow().isoformat(),
            'type': alert_type,
            'severity': self.get_alert_severity(alert_type),
            'details': details
        }

        # Send to SIEM
        await self.send_to_siem(alert)

        # Notify security team
        await self.notify_security_team(alert)

        # Automatic response for critical alerts
        if alert['severity'] == 'critical':
            await self.initiate_incident_response(alert)

class IncidentResponseManager:
    def __init__(self):
        self.response_procedures = self.load_response_procedures()
        self.escalation_matrix = self.load_escalation_matrix()

    async def handle_security_incident(self, incident: Dict[str, Any]):
        """Handle security incident with automated response"""
        incident_type = incident.get('type')
        severity = incident.get('severity')

        # Execute immediate containment
        await self.immediate_containment(incident)

        # Start investigation
        investigation_id = await self.start_investigation(incident)

        # Notify stakeholders
        await self.notify_stakeholders(incident, severity)

        # Execute response procedure
        procedure = self.response_procedures.get(incident_type)
        if procedure:
            await self.execute_response_procedure(procedure, incident)

        return investigation_id

    async def immediate_containment(self, incident: Dict[str, Any]):
        """Immediate containment actions"""
        incident_type = incident.get('type')

        if incident_type == 'brute_force':
            # Block IP address
            ip_address = incident['details'].get('ip_address')
            await self.block_ip_address(ip_address)

        elif incident_type == 'privilege_escalation':
            # Suspend user account
            user_id = incident['details'].get('user_id')
            await self.suspend_user_account(user_id)

        elif incident_type == 'data_breach':
            # Disable affected systems
            await self.emergency_system_shutdown()

class HAMCPDeployment:
    def __init__(self):
        self.primary_region = 'us-east-1'
        self.backup_regions = ['us-west-2', 'eu-west-1']
        self.health_check_interval = 30

    async def setup_load_balancer(self):
        """Configure load balancer for HA"""
        servers = [
            {'host': 'mcp-server-1.example.com', 'port': 8443, 'weight': 100},
            {'host': 'mcp-server-2.example.com', 'port': 8443, 'weight': 100},
            {'host': 'mcp-server-3.example.com', 'port': 8443, 'weight': 50}  # Backup
        ]

        return await self.configure_load_balancer(servers)

    async def implement_circuit_breaker(self):
        """Implement circuit breaker pattern"""
        circuit_breaker = CircuitBreaker(
            failure_threshold=5,
            recovery_timeout=60,
            expected_exception=ConnectionError
        )

        return circuit_breaker

    async def setup_database_replication(self):
        """Configure database replication"""
        replication_config = {
            'primary': 'postgresql://primary.db.example.com:5432/mcp',
            'replicas': [
                'postgresql://replica1.db.example.com:5432/mcp',
                'postgresql://replica2.db.example.com:5432/mcp'
            ],
            'read_preference': 'nearest'
        }

        return replication_config