898 lines
		
	
	
		
			38 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			898 lines
		
	
	
		
			38 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
# dnsrecon-reduced/core/scanner.py
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import threading
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import traceback
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import os
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import importlib
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import redis
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import time
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import random # Imported for jitter
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from typing import List, Set, Dict, Any, Tuple, Optional
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from concurrent.futures import ThreadPoolExecutor
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from collections import defaultdict
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from queue import PriorityQueue
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from datetime import datetime, timezone
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from core.graph_manager import GraphManager, NodeType
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from core.logger import get_forensic_logger, new_session
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from core.provider_result import ProviderResult
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from utils.helpers import _is_valid_ip, _is_valid_domain
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from providers.base_provider import BaseProvider
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from core.rate_limiter import GlobalRateLimiter
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class ScanStatus:
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    """Enumeration of scan statuses."""
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    IDLE = "idle"
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    RUNNING = "running"
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    COMPLETED = "completed"
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    FAILED = "failed"
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    STOPPED = "stopped"
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class Scanner:
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    """
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    Main scanning orchestrator for DNSRecon passive reconnaissance.
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    UNIFIED: Combines comprehensive features with improved display formatting.
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    """
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    def __init__(self, session_config=None):
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        """Initialize scanner with session-specific configuration."""
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        try:
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            # Use provided session config or create default
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            if session_config is None:
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                from core.session_config import create_session_config
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                session_config = create_session_config()
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            self.config = session_config
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            self.graph = GraphManager()
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            self.providers = []
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            self.status = ScanStatus.IDLE
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            self.current_target = None
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            self.current_depth = 0
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            self.max_depth = 2
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            self.stop_event = threading.Event()
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            self.scan_thread = None
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            self.session_id: Optional[str] = None  # Will be set by session manager
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            self.task_queue = PriorityQueue()
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            self.target_retries = defaultdict(int)
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            self.scan_failed_due_to_retries = False
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            self.initial_targets = set()
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            # Thread-safe processing tracking (from Document 1)
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            self.currently_processing = set()
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            self.processing_lock = threading.Lock()
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            # Display-friendly processing list (from Document 2)
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            self.currently_processing_display = []
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            # Scanning progress tracking
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            self.total_indicators_found = 0
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            self.indicators_processed = 0
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            self.indicators_completed = 0
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            self.tasks_re_enqueued = 0
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            self.tasks_skipped = 0  # BUGFIX: Initialize tasks_skipped
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            self.total_tasks_ever_enqueued = 0
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            self.current_indicator = ""
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            self.last_task_from_queue = None
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            # Concurrent processing configuration
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            self.max_workers = self.config.max_concurrent_requests
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            self.executor = None
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            # Status logger thread with improved formatting
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            self.status_logger_thread = None
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            self.status_logger_stop_event = threading.Event()
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            # Initialize providers with session config
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            self._initialize_providers()
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            # Initialize logger
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            self.logger = get_forensic_logger()
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            # Initialize global rate limiter
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            self.rate_limiter = GlobalRateLimiter(redis.StrictRedis(db=0))
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        except Exception as e:
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            print(f"ERROR: Scanner initialization failed: {e}")
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            traceback.print_exc()
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            raise
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    def _is_stop_requested(self) -> bool:
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        """
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        Check if stop is requested using both local and Redis-based signals.
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        This ensures reliable termination across process boundaries.
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        """
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        if self.stop_event.is_set():
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            return True
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        if self.session_id:
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            try:
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                from core.session_manager import session_manager
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                return session_manager.is_stop_requested(self.session_id)
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            except Exception as e:
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                # Fall back to local event
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                return self.stop_event.is_set()
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        return False
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    def _set_stop_signal(self) -> None:
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        """
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        Set stop signal both locally and in Redis.
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        """
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        self.stop_event.set()
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        if self.session_id:
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            try:
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                from core.session_manager import session_manager
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                session_manager.set_stop_signal(self.session_id)
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            except Exception as e:
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                pass
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    def __getstate__(self):
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        """Prepare object for pickling by excluding unpicklable attributes."""
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        state = self.__dict__.copy()
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        unpicklable_attrs = [
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            'stop_event',
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            'scan_thread', 
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            'executor',
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            'processing_lock',
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            'task_queue',
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            'rate_limiter',
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            'logger',
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            'status_logger_thread',
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            'status_logger_stop_event'
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        ]
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        for attr in unpicklable_attrs:
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            if attr in state:
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                del state[attr]
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        if 'providers' in state:
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            for provider in state['providers']:
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                if hasattr(provider, '_stop_event'):
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                    provider._stop_event = None
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        return state
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    def __setstate__(self, state):
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        """Restore object after unpickling by reconstructing threading objects."""
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        self.__dict__.update(state)
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        self.stop_event = threading.Event()
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        self.scan_thread = None
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        self.executor = None
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        self.processing_lock = threading.Lock()
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        self.task_queue = PriorityQueue()
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        self.rate_limiter = GlobalRateLimiter(redis.StrictRedis(db=0))
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        self.logger = get_forensic_logger()
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        self.status_logger_thread = None
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        self.status_logger_stop_event = threading.Event()
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        if not hasattr(self, 'providers') or not self.providers:
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            self._initialize_providers()
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        if not hasattr(self, 'currently_processing'):
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            self.currently_processing = set()
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        if not hasattr(self, 'currently_processing_display'):
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            self.currently_processing_display = []
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        if hasattr(self, 'providers'):
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            for provider in self.providers:
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                if hasattr(provider, 'set_stop_event'):
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                    provider.set_stop_event(self.stop_event)
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    def _initialize_providers(self) -> None:
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        """Initialize all available providers based on session configuration."""
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        self.providers = []
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        provider_dir = os.path.join(os.path.dirname(__file__), '..', 'providers')
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        for filename in os.listdir(provider_dir):
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            if filename.endswith('_provider.py') and not filename.startswith('base'):
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                module_name = f"providers.{filename[:-3]}"
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                try:
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                    module = importlib.import_module(module_name)
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                    for attribute_name in dir(module):
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                        attribute = getattr(module, attribute_name)
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                        if isinstance(attribute, type) and issubclass(attribute, BaseProvider) and attribute is not BaseProvider:
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                            provider_class = attribute
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                            provider = provider_class(name=attribute_name, session_config=self.config)
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                            provider_name = provider.get_name()
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                            if self.config.is_provider_enabled(provider_name):
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                                if provider.is_available():
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                                    provider.set_stop_event(self.stop_event)
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                                    self.providers.append(provider)
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                except Exception as e:
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                    traceback.print_exc()
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    def _status_logger_thread(self):
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        """Periodically prints a clean, formatted scan status to the terminal."""
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        HEADER = "\033[95m"
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        CYAN = "\033[96m"
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        GREEN = "\033[92m"
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        YELLOW = "\033[93m"
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        BLUE = "\033[94m"
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        ENDC = "\033[0m"
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        BOLD = "\033[1m"
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        last_status_str = ""
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        while not self.status_logger_stop_event.is_set():
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            try:
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                with self.processing_lock:
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                    in_flight_tasks = list(self.currently_processing)
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                    self.currently_processing_display = in_flight_tasks.copy()
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                status_str = (
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                    f"{BOLD}{HEADER}Scan Status: {self.status.upper()}{ENDC} | "
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                    f"{CYAN}Queued: {self.task_queue.qsize()}{ENDC} | "
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                    f"{YELLOW}In-Flight: {len(in_flight_tasks)}{ENDC} | "
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                    f"{GREEN}Completed: {self.indicators_completed}{ENDC} | "
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                    f"Skipped: {self.tasks_skipped} | "
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                    f"Rescheduled: {self.tasks_re_enqueued}"
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                )
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                if status_str != last_status_str:
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                    print(f"\n{'-'*80}")
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                    print(status_str)
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                    if self.last_task_from_queue:
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                        # Unpack the new time-based queue item
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                        _, p, (pn, ti, d) = self.last_task_from_queue
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                        print(f"{BLUE}Last task dequeued -> Prio:{p} | Provider:{pn} | Target:'{ti}' | Depth:{d}{ENDC}")
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                    if in_flight_tasks:
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                        print(f"{BOLD}{YELLOW}Currently Processing:{ENDC}")
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                        display_tasks = [f"  - {p}: {t}" for p, t in in_flight_tasks[:3]]
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                        print("\n".join(display_tasks))
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                        if len(in_flight_tasks) > 3:
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                            print(f"  ... and {len(in_flight_tasks) - 3} more")
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                    print(f"{'-'*80}")
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                    last_status_str = status_str
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            except Exception:
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                pass
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            time.sleep(2)
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    def start_scan(self, target: str, max_depth: int = 2, clear_graph: bool = True, force_rescan_target: Optional[str] = None) -> bool:
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        """
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        Starts a new reconnaissance scan.
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        """
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        if self.scan_thread and self.scan_thread.is_alive():
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            self._set_stop_signal()
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            self.status = ScanStatus.STOPPED
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            with self.processing_lock:
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                self.currently_processing.clear()
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            self.currently_processing_display = []
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            self.task_queue = PriorityQueue()
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            if self.executor:
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                self.executor.shutdown(wait=False, cancel_futures=True)
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                self.executor = None
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            self.scan_thread.join(5.0)
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        self.status = ScanStatus.IDLE
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        self.stop_event.clear()
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        if self.session_id:
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            from core.session_manager import session_manager
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            session_manager.clear_stop_signal(self.session_id)
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        with self.processing_lock:
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            self.currently_processing.clear()
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        self.currently_processing_display = []
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        self.task_queue = PriorityQueue()
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        self.target_retries.clear()
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        self.scan_failed_due_to_retries = False
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        self.tasks_skipped = 0 
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        self.last_task_from_queue = None
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        self._update_session_state()
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        try:
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            if not hasattr(self, 'providers') or not self.providers:
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                return False
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            if clear_graph:
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                self.graph.clear()
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                self.initial_targets.clear()
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            if force_rescan_target and self.graph.graph.has_node(force_rescan_target):
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                node_data = self.graph.graph.nodes[force_rescan_target]
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                if 'metadata' in node_data and 'provider_states' in node_data['metadata']:
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                    node_data['metadata']['provider_states'] = {}
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            self.current_target = target.lower().strip()
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            self.initial_targets.add(self.current_target)
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            self.max_depth = max_depth
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            self.current_depth = 0
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            self.total_indicators_found = 0
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            self.indicators_processed = 0
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            self.indicators_completed = 0
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            self.tasks_re_enqueued = 0
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            self.total_tasks_ever_enqueued = 0
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            self.current_indicator = self.current_target
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            self._update_session_state()
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            self.logger = new_session()
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            self.scan_thread = threading.Thread(
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                target=self._execute_scan,
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                args=(self.current_target, max_depth),
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                daemon=True
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            )
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            self.scan_thread.start()
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            self.status_logger_stop_event.clear()
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            self.status_logger_thread = threading.Thread(target=self._status_logger_thread, daemon=True)
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            self.status_logger_thread.start()
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            return True
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        except Exception as e:
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            traceback.print_exc()
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            self.status = ScanStatus.FAILED
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            self._update_session_state() 
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            return False
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    def _get_priority(self, provider_name):
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        rate_limit = self.config.get_rate_limit(provider_name)
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        if rate_limit > 90:
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            return 1 # Highest priority
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        elif rate_limit > 50:
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            return 2
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        else:
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            return 3 # Lowest priority
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    def _execute_scan(self, target: str, max_depth: int) -> None:
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        """
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        Execute the reconnaissance scan with a time-based, robust scheduler.
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        Handles rate-limiting via deferral and failures via exponential backoff.
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        """
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        self.executor = ThreadPoolExecutor(max_workers=self.max_workers)
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        processed_tasks = set()
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        is_ip = _is_valid_ip(target)
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        initial_providers = self._get_eligible_providers(target, is_ip, False)
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        for provider in initial_providers:
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            provider_name = provider.get_name()
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            priority = self._get_priority(provider_name)
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            # OVERHAUL: Enqueue with current timestamp to run immediately
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            self.task_queue.put((time.time(), priority, (provider_name, target, 0)))
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            self.total_tasks_ever_enqueued += 1
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        try:
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            self.status = ScanStatus.RUNNING
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            self._update_session_state()
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            enabled_providers = [provider.get_name() for provider in self.providers]
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            self.logger.log_scan_start(target, max_depth, enabled_providers)
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            node_type = NodeType.IP if is_ip else NodeType.DOMAIN
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            self.graph.add_node(target, node_type)
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            self._initialize_provider_states(target)
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            while not self._is_stop_requested():
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                if self.task_queue.empty() and not self.currently_processing:
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                    break # Scan is complete
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                try:
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                    # OVERHAUL: Peek at the next task to see if it's ready to run
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                    next_run_at, _, _ = self.task_queue.queue[0]
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                    if next_run_at > time.time():
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                        time.sleep(0.1)  # Sleep to prevent busy-waiting for future tasks
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                        continue
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                    # Task is ready, so get it from the queue
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                    run_at, priority, (provider_name, target_item, depth) = self.task_queue.get()
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                    self.last_task_from_queue = (run_at, priority, (provider_name, target_item, depth))
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                except IndexError:
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                    time.sleep(0.1) # Queue is empty, but tasks might still be processing
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                    continue
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                task_tuple = (provider_name, target_item)
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                if task_tuple in processed_tasks:
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                    self.tasks_skipped += 1
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                    self.indicators_completed +=1
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                    continue
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                if depth > max_depth:
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                    continue
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                # OVERHAUL: Handle rate limiting with time-based deferral
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                if self.rate_limiter.is_rate_limited(provider_name, self.config.get_rate_limit(provider_name), 60):
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                    defer_until = time.time() + 60 # Defer for 60 seconds
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                    self.task_queue.put((defer_until, priority, (provider_name, target_item, depth)))
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                    self.tasks_re_enqueued += 1
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                    continue
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                with self.processing_lock:
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                    if self._is_stop_requested(): break
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                    self.currently_processing.add(task_tuple)
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                try:
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                    self.current_depth = depth
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                    self.current_indicator = target_item
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                    self._update_session_state()
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                    if self._is_stop_requested(): break
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                    provider = next((p for p in self.providers if p.get_name() == provider_name), None)
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                    if provider:
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                        new_targets, _, success = self._query_single_provider_for_target(provider, target_item, depth)
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                        if self._is_stop_requested(): break
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                        if not success:
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                            self.target_retries[task_tuple] += 1
 | 
						|
                            if self.target_retries[task_tuple] <= self.config.max_retries_per_target:
 | 
						|
                                # OVERHAUL: Exponential backoff for retries
 | 
						|
                                retry_count = self.target_retries[task_tuple]
 | 
						|
                                backoff_delay = (2 ** retry_count) + random.uniform(0, 1) # Add jitter
 | 
						|
                                retry_at = time.time() + backoff_delay
 | 
						|
                                self.task_queue.put((retry_at, priority, (provider_name, target_item, depth)))
 | 
						|
                                self.tasks_re_enqueued += 1
 | 
						|
                            else:
 | 
						|
                                self.scan_failed_due_to_retries = True
 | 
						|
                                self._log_target_processing_error(str(task_tuple), "Max retries exceeded")
 | 
						|
                        else:
 | 
						|
                            processed_tasks.add(task_tuple)
 | 
						|
                            self.indicators_completed += 1
 | 
						|
 | 
						|
                        if not self._is_stop_requested():
 | 
						|
                            for new_target in new_targets:
 | 
						|
                                is_ip_new = _is_valid_ip(new_target)
 | 
						|
                                eligible_providers_new = self._get_eligible_providers(new_target, is_ip_new, False)
 | 
						|
                                for p_new in eligible_providers_new:
 | 
						|
                                    p_name_new = p_new.get_name()
 | 
						|
                                    if (p_name_new, new_target) not in processed_tasks:
 | 
						|
                                        new_depth = depth + 1 if new_target in new_targets else depth
 | 
						|
                                        new_priority = self._get_priority(p_name_new)
 | 
						|
                                        # OVERHAUL: Enqueue new tasks to run immediately
 | 
						|
                                        self.task_queue.put((time.time(), new_priority, (p_name_new, new_target, new_depth)))
 | 
						|
                                        self.total_tasks_ever_enqueued += 1
 | 
						|
                finally:
 | 
						|
                    with self.processing_lock:
 | 
						|
                        self.currently_processing.discard(task_tuple)
 | 
						|
 | 
						|
        except Exception as e:
 | 
						|
            traceback.print_exc()
 | 
						|
            self.status = ScanStatus.FAILED
 | 
						|
            self.logger.logger.error(f"Scan failed: {e}")
 | 
						|
        finally:
 | 
						|
            with self.processing_lock:
 | 
						|
                self.currently_processing.clear()
 | 
						|
            self.currently_processing_display = []
 | 
						|
 | 
						|
            if self._is_stop_requested():
 | 
						|
                self.status = ScanStatus.STOPPED
 | 
						|
            elif self.scan_failed_due_to_retries:
 | 
						|
                self.status = ScanStatus.FAILED
 | 
						|
            else:
 | 
						|
                self.status = ScanStatus.COMPLETED
 | 
						|
 | 
						|
            self.status_logger_stop_event.set()
 | 
						|
            if self.status_logger_thread:
 | 
						|
                self.status_logger_thread.join()
 | 
						|
 | 
						|
            self._update_session_state()
 | 
						|
            self.logger.log_scan_complete()
 | 
						|
            if self.executor:
 | 
						|
                self.executor.shutdown(wait=False, cancel_futures=True)
 | 
						|
                self.executor = None
 | 
						|
 | 
						|
    def _query_single_provider_for_target(self, provider: BaseProvider, target: str, depth: int) -> Tuple[Set[str], Set[str], bool]:
 | 
						|
        """
 | 
						|
        Query a single provider and process the unified ProviderResult.
 | 
						|
        """
 | 
						|
        if self._is_stop_requested():
 | 
						|
            return set(), set(), False
 | 
						|
 | 
						|
        is_ip = _is_valid_ip(target)
 | 
						|
        target_type = NodeType.IP if is_ip else NodeType.DOMAIN
 | 
						|
 | 
						|
        self.graph.add_node(target, target_type)
 | 
						|
        self._initialize_provider_states(target)
 | 
						|
 | 
						|
        new_targets = set()
 | 
						|
        large_entity_members = set()
 | 
						|
        provider_successful = True
 | 
						|
 | 
						|
        try:
 | 
						|
            provider_result = self._query_single_provider_unified(provider, target, is_ip, depth)
 | 
						|
            
 | 
						|
            if provider_result is None:
 | 
						|
                provider_successful = False
 | 
						|
            elif not self._is_stop_requested():
 | 
						|
                discovered, is_large_entity = self._process_provider_result_unified(
 | 
						|
                    target, provider, provider_result, depth
 | 
						|
                )
 | 
						|
                if is_large_entity:
 | 
						|
                    large_entity_members.update(discovered)
 | 
						|
                else:
 | 
						|
                    new_targets.update(discovered)
 | 
						|
                self.graph.process_correlations_for_node(target)
 | 
						|
        except Exception as e:
 | 
						|
            provider_successful = False
 | 
						|
            self._log_provider_error(target, provider.get_name(), str(e))
 | 
						|
 | 
						|
        return new_targets, large_entity_members, provider_successful
 | 
						|
 | 
						|
    def _query_single_provider_unified(self, provider: BaseProvider, target: str, is_ip: bool, current_depth: int) -> Optional[ProviderResult]:
 | 
						|
        """
 | 
						|
        Query a single provider with stop signal checking.
 | 
						|
        """
 | 
						|
        provider_name = provider.get_name()
 | 
						|
        start_time = datetime.now(timezone.utc)
 | 
						|
        
 | 
						|
        if self._is_stop_requested():
 | 
						|
            return None
 | 
						|
        
 | 
						|
        try:
 | 
						|
            if is_ip:
 | 
						|
                result = provider.query_ip(target)
 | 
						|
            else:
 | 
						|
                result = provider.query_domain(target)
 | 
						|
            
 | 
						|
            if self._is_stop_requested():
 | 
						|
                return None
 | 
						|
            
 | 
						|
            relationship_count = result.get_relationship_count() if result else 0
 | 
						|
            self._update_provider_state(target, provider_name, 'success', relationship_count, None, start_time)
 | 
						|
            
 | 
						|
            return result
 | 
						|
            
 | 
						|
        except Exception as e:
 | 
						|
            self._update_provider_state(target, provider_name, 'failed', 0, str(e), start_time)
 | 
						|
            return None
 | 
						|
 | 
						|
    def _process_provider_result_unified(self, target: str, provider: BaseProvider, 
 | 
						|
                                       provider_result: ProviderResult, current_depth: int) -> Tuple[Set[str], bool]:
 | 
						|
        """
 | 
						|
        Process a unified ProviderResult object to update the graph.
 | 
						|
        """
 | 
						|
        provider_name = provider.get_name()
 | 
						|
        discovered_targets = set()
 | 
						|
 | 
						|
        if self._is_stop_requested():
 | 
						|
            return discovered_targets, False
 | 
						|
 | 
						|
        attributes_by_node = defaultdict(list)
 | 
						|
        for attribute in provider_result.attributes:
 | 
						|
            attr_dict = {
 | 
						|
                "name": attribute.name,
 | 
						|
                "value": attribute.value,
 | 
						|
                "type": attribute.type,
 | 
						|
                "provider": attribute.provider,
 | 
						|
                "confidence": attribute.confidence,
 | 
						|
                "metadata": attribute.metadata
 | 
						|
            }
 | 
						|
            attributes_by_node[attribute.target_node].append(attr_dict)
 | 
						|
 | 
						|
        for node_id, node_attributes_list in attributes_by_node.items():
 | 
						|
            if self.graph.graph.has_node(node_id):
 | 
						|
                if _is_valid_ip(node_id):
 | 
						|
                    node_type = NodeType.IP
 | 
						|
                elif node_id.startswith('AS') and node_id[2:].isdigit():
 | 
						|
                    node_type = NodeType.ASN
 | 
						|
                else:
 | 
						|
                    node_type = NodeType.DOMAIN
 | 
						|
                
 | 
						|
                self.graph.add_node(node_id, node_type, attributes=node_attributes_list)
 | 
						|
 | 
						|
        if provider_result.get_relationship_count() > self.config.large_entity_threshold:
 | 
						|
            members = self._create_large_entity_from_provider_result(target, provider_name, provider_result, current_depth)
 | 
						|
            return members, True
 | 
						|
 | 
						|
        for i, relationship in enumerate(provider_result.relationships):
 | 
						|
            if i % 5 == 0 and self._is_stop_requested():
 | 
						|
                break
 | 
						|
 | 
						|
            source_node = relationship.source_node
 | 
						|
            target_node = relationship.target_node
 | 
						|
            
 | 
						|
            source_type = NodeType.IP if _is_valid_ip(source_node) else NodeType.DOMAIN
 | 
						|
            if target_node.startswith('AS') and target_node[2:].isdigit():
 | 
						|
                target_type = NodeType.ASN
 | 
						|
            elif _is_valid_ip(target_node):
 | 
						|
                target_type = NodeType.IP
 | 
						|
            else:
 | 
						|
                target_type = NodeType.DOMAIN
 | 
						|
            
 | 
						|
            self.graph.add_node(source_node, source_type)
 | 
						|
            self.graph.add_node(target_node, target_type)
 | 
						|
            
 | 
						|
            if self.graph.add_edge(
 | 
						|
                source_node, target_node, 
 | 
						|
                relationship.relationship_type, 
 | 
						|
                relationship.confidence, 
 | 
						|
                provider_name, 
 | 
						|
                relationship.raw_data
 | 
						|
            ):
 | 
						|
                pass
 | 
						|
            
 | 
						|
            if _is_valid_domain(target_node) or _is_valid_ip(target_node):
 | 
						|
                discovered_targets.add(target_node)
 | 
						|
 | 
						|
        return discovered_targets, False
 | 
						|
 | 
						|
    def _create_large_entity_from_provider_result(self, source: str, provider_name: str, 
 | 
						|
                                                provider_result: ProviderResult, current_depth: int) -> Set[str]:
 | 
						|
        """
 | 
						|
        Create a large entity node from a ProviderResult.
 | 
						|
        """
 | 
						|
        entity_id = f"large_entity_{provider_name}_{hash(source) & 0x7FFFFFFF}"
 | 
						|
        
 | 
						|
        targets = [rel.target_node for rel in provider_result.relationships]
 | 
						|
        node_type = 'unknown'
 | 
						|
        
 | 
						|
        if targets:
 | 
						|
            if _is_valid_domain(targets[0]):
 | 
						|
                node_type = 'domain'
 | 
						|
            elif _is_valid_ip(targets[0]):
 | 
						|
                node_type = 'ip'
 | 
						|
        
 | 
						|
        for target in targets:
 | 
						|
            target_node_type = NodeType.DOMAIN if node_type == 'domain' else NodeType.IP
 | 
						|
            self.graph.add_node(target, target_node_type)
 | 
						|
 | 
						|
        attributes_dict = {
 | 
						|
            'count': len(targets),
 | 
						|
            'nodes': targets,
 | 
						|
            'node_type': node_type,
 | 
						|
            'source_provider': provider_name,
 | 
						|
            'discovery_depth': current_depth,
 | 
						|
            'threshold_exceeded': self.config.large_entity_threshold,
 | 
						|
        }
 | 
						|
        
 | 
						|
        attributes_list = []
 | 
						|
        for key, value in attributes_dict.items():
 | 
						|
            attributes_list.append({
 | 
						|
                "name": key,
 | 
						|
                "value": value,
 | 
						|
                "type": "large_entity_info",
 | 
						|
                "provider": provider_name,
 | 
						|
                "confidence": 0.9,
 | 
						|
                "metadata": {}
 | 
						|
            })
 | 
						|
 | 
						|
        description = f'Large entity created due to {len(targets)} relationships from {provider_name}'
 | 
						|
        
 | 
						|
        self.graph.add_node(entity_id, NodeType.LARGE_ENTITY, attributes=attributes_list, description=description)
 | 
						|
        
 | 
						|
        if provider_result.relationships:
 | 
						|
            rel_type = provider_result.relationships[0].relationship_type
 | 
						|
            self.graph.add_edge(source, entity_id, rel_type, 0.9, provider_name, 
 | 
						|
                              {'large_entity_info': f'Contains {len(targets)} {node_type}s'})
 | 
						|
        
 | 
						|
        self.logger.logger.warning(f"Large entity created: {entity_id} contains {len(targets)} targets from {provider_name}")
 | 
						|
        
 | 
						|
        return set(targets)
 | 
						|
 | 
						|
    def stop_scan(self) -> bool:
 | 
						|
        """Request immediate scan termination with proper cleanup."""
 | 
						|
        try:
 | 
						|
            self.logger.logger.info("Scan termination requested by user")
 | 
						|
            self._set_stop_signal()
 | 
						|
            self.status = ScanStatus.STOPPED
 | 
						|
            
 | 
						|
            with self.processing_lock:
 | 
						|
                self.currently_processing.clear()
 | 
						|
            self.currently_processing_display = []
 | 
						|
            
 | 
						|
            self.task_queue = PriorityQueue()
 | 
						|
            
 | 
						|
            if self.executor:
 | 
						|
                try:
 | 
						|
                    self.executor.shutdown(wait=False, cancel_futures=True)
 | 
						|
                except Exception:
 | 
						|
                    pass
 | 
						|
 | 
						|
            self._update_session_state()
 | 
						|
            return True
 | 
						|
            
 | 
						|
        except Exception as e:
 | 
						|
            self.logger.logger.error(f"Error during scan termination: {e}")
 | 
						|
            traceback.print_exc()
 | 
						|
            return False
 | 
						|
 | 
						|
    def extract_node_from_large_entity(self, large_entity_id: str, node_id_to_extract: str) -> bool:
 | 
						|
        """
 | 
						|
        Extracts a node from a large entity and re-queues it for scanning.
 | 
						|
        """
 | 
						|
        if not self.graph.graph.has_node(large_entity_id):
 | 
						|
            return False
 | 
						|
 | 
						|
        predecessors = list(self.graph.graph.predecessors(large_entity_id))
 | 
						|
        if not predecessors:
 | 
						|
            return False
 | 
						|
        source_node_id = predecessors[0]
 | 
						|
        
 | 
						|
        original_edge_data = self.graph.graph.get_edge_data(source_node_id, large_entity_id)
 | 
						|
        if not original_edge_data:
 | 
						|
             return False
 | 
						|
 | 
						|
        success = self.graph.extract_node_from_large_entity(large_entity_id, node_id_to_extract)
 | 
						|
        if not success:
 | 
						|
            return False
 | 
						|
 | 
						|
        self.graph.add_edge(
 | 
						|
            source_id=source_node_id,
 | 
						|
            target_id=node_id_to_extract,
 | 
						|
            relationship_type=original_edge_data.get('relationship_type', 'extracted_from_large_entity'),
 | 
						|
            confidence_score=original_edge_data.get('confidence_score', 0.85),
 | 
						|
            source_provider=original_edge_data.get('source_provider', 'unknown'),
 | 
						|
            raw_data={'context': f'Extracted from large entity {large_entity_id}'}
 | 
						|
        )
 | 
						|
 | 
						|
        is_ip = _is_valid_ip(node_id_to_extract)
 | 
						|
        
 | 
						|
        large_entity_attributes = self.graph.graph.nodes[large_entity_id].get('attributes', [])
 | 
						|
        discovery_depth_attr = next((attr for attr in large_entity_attributes if attr.get('name') == 'discovery_depth'), None)
 | 
						|
        current_depth = discovery_depth_attr['value'] if discovery_depth_attr else 0
 | 
						|
        
 | 
						|
        eligible_providers = self._get_eligible_providers(node_id_to_extract, is_ip, False)
 | 
						|
        for provider in eligible_providers:
 | 
						|
            provider_name = provider.get_name()
 | 
						|
            priority = self._get_priority(provider_name)
 | 
						|
            self.task_queue.put((time.time(), priority, (provider_name, node_id_to_extract, current_depth)))
 | 
						|
            self.total_tasks_ever_enqueued += 1
 | 
						|
 | 
						|
        if self.status != ScanStatus.RUNNING:
 | 
						|
            self.status = ScanStatus.RUNNING
 | 
						|
            self._update_session_state()
 | 
						|
            
 | 
						|
            if not self.scan_thread or not self.scan_thread.is_alive():
 | 
						|
                 self.scan_thread = threading.Thread(
 | 
						|
                    target=self._execute_scan,
 | 
						|
                    args=(self.current_target, self.max_depth),
 | 
						|
                    daemon=True
 | 
						|
                )
 | 
						|
                 self.scan_thread.start()
 | 
						|
 | 
						|
        return True
 | 
						|
 | 
						|
    def _update_session_state(self) -> None:
 | 
						|
        """
 | 
						|
        Update the scanner state in Redis for GUI updates.
 | 
						|
        """
 | 
						|
        if self.session_id:
 | 
						|
            try:
 | 
						|
                from core.session_manager import session_manager
 | 
						|
                session_manager.update_session_scanner(self.session_id, self)
 | 
						|
            except Exception:
 | 
						|
                pass
 | 
						|
 | 
						|
    def get_scan_status(self) -> Dict[str, Any]:
 | 
						|
        """Get current scan status with comprehensive processing information."""
 | 
						|
        try:
 | 
						|
            with self.processing_lock:
 | 
						|
                currently_processing_count = len(self.currently_processing)
 | 
						|
                currently_processing_list = list(self.currently_processing)
 | 
						|
            
 | 
						|
            return {
 | 
						|
                'status': self.status,
 | 
						|
                'target_domain': self.current_target,
 | 
						|
                'current_depth': self.current_depth,
 | 
						|
                'max_depth': self.max_depth,
 | 
						|
                'current_indicator': self.current_indicator,
 | 
						|
                'indicators_processed': self.indicators_processed,
 | 
						|
                'indicators_completed': self.indicators_completed,
 | 
						|
                'tasks_re_enqueued': self.tasks_re_enqueued,
 | 
						|
                'progress_percentage': self._calculate_progress(),
 | 
						|
                'total_tasks_ever_enqueued': self.total_tasks_ever_enqueued,
 | 
						|
                'enabled_providers': [provider.get_name() for provider in self.providers],
 | 
						|
                'graph_statistics': self.graph.get_statistics(),
 | 
						|
                'task_queue_size': self.task_queue.qsize(),
 | 
						|
                'currently_processing_count': currently_processing_count,
 | 
						|
                'currently_processing': currently_processing_list[:5],
 | 
						|
                'tasks_in_queue': self.task_queue.qsize(),
 | 
						|
                'tasks_completed': self.indicators_completed,
 | 
						|
                'tasks_skipped': self.tasks_skipped,
 | 
						|
                'tasks_rescheduled': self.tasks_re_enqueued,
 | 
						|
            }
 | 
						|
        except Exception:
 | 
						|
            traceback.print_exc()
 | 
						|
            return { 'status': 'error', 'message': 'Failed to get status' }
 | 
						|
 | 
						|
    def _initialize_provider_states(self, target: str) -> None:
 | 
						|
        """Initialize provider states for forensic tracking."""
 | 
						|
        if not self.graph.graph.has_node(target): return
 | 
						|
        node_data = self.graph.graph.nodes[target]
 | 
						|
        if 'metadata' not in node_data: node_data['metadata'] = {}
 | 
						|
        if 'provider_states' not in node_data['metadata']: node_data['metadata']['provider_states'] = {}
 | 
						|
 | 
						|
    def _get_eligible_providers(self, target: str, is_ip: bool, dns_only: bool) -> List:
 | 
						|
        """Get providers eligible for querying this target."""
 | 
						|
        if dns_only:
 | 
						|
            return [p for p in self.providers if p.get_name() == 'dns']
 | 
						|
        eligible = []
 | 
						|
        target_key = 'ips' if is_ip else 'domains'
 | 
						|
        for provider in self.providers:
 | 
						|
            if provider.get_eligibility().get(target_key):
 | 
						|
                if not self._already_queried_provider(target, provider.get_name()):
 | 
						|
                    eligible.append(provider)
 | 
						|
        return eligible
 | 
						|
 | 
						|
    def _already_queried_provider(self, target: str, provider_name: str) -> bool:
 | 
						|
        """Check if we already successfully queried a provider for a target."""
 | 
						|
        if not self.graph.graph.has_node(target): return False
 | 
						|
        node_data = self.graph.graph.nodes[target]
 | 
						|
        provider_states = node_data.get('metadata', {}).get('provider_states', {})
 | 
						|
        provider_state = provider_states.get(provider_name)
 | 
						|
        return provider_state is not None and provider_state.get('status') == 'success'
 | 
						|
 | 
						|
    def _update_provider_state(self, target: str, provider_name: str, status: str, 
 | 
						|
                              results_count: int, error: Optional[str], start_time: datetime) -> None:
 | 
						|
        """Update provider state in node metadata for forensic tracking."""
 | 
						|
        if not self.graph.graph.has_node(target): return
 | 
						|
        node_data = self.graph.graph.nodes[target]
 | 
						|
        if 'metadata' not in node_data: node_data['metadata'] = {}
 | 
						|
        if 'provider_states' not in node_data['metadata']: node_data['metadata']['provider_states'] = {}
 | 
						|
        node_data['metadata']['provider_states'][provider_name] = {
 | 
						|
            'status': status,
 | 
						|
            'timestamp': start_time.isoformat(),
 | 
						|
            'results_count': results_count,
 | 
						|
            'error': error,
 | 
						|
            'duration_ms': (datetime.now(timezone.utc) - start_time).total_seconds() * 1000
 | 
						|
        }
 | 
						|
        
 | 
						|
    def _log_target_processing_error(self, target: str, error: str) -> None:
 | 
						|
        self.logger.logger.error(f"Target processing failed for {target}: {error}")
 | 
						|
 | 
						|
    def _log_provider_error(self, target: str, provider_name: str, error: str) -> None:
 | 
						|
        self.logger.logger.error(f"Provider {provider_name} failed for {target}: {error}")
 | 
						|
 | 
						|
    def _calculate_progress(self) -> float:
 | 
						|
        if self.total_tasks_ever_enqueued == 0: return 0.0
 | 
						|
        return min(100.0, (self.indicators_completed / self.total_tasks_ever_enqueued) * 100)
 | 
						|
 | 
						|
    def get_graph_data(self) -> Dict[str, Any]:
 | 
						|
        graph_data = self.graph.get_graph_data()
 | 
						|
        graph_data['initial_targets'] = list(self.initial_targets)
 | 
						|
        return graph_data
 | 
						|
 | 
						|
    def export_results(self) -> Dict[str, Any]:
 | 
						|
        graph_data = self.graph.export_json()
 | 
						|
        audit_trail = self.logger.export_audit_trail()
 | 
						|
        provider_stats = {}
 | 
						|
        for provider in self.providers:
 | 
						|
            provider_stats[provider.get_name()] = provider.get_statistics()
 | 
						|
        
 | 
						|
        return {
 | 
						|
            'scan_metadata': {
 | 
						|
                'target_domain': self.current_target, 'max_depth': self.max_depth,
 | 
						|
                'final_status': self.status, 'total_indicators_processed': self.indicators_processed,
 | 
						|
                'enabled_providers': list(provider_stats.keys()), 'session_id': self.session_id
 | 
						|
            },
 | 
						|
            'graph_data': graph_data,
 | 
						|
            'forensic_audit': audit_trail,
 | 
						|
            'provider_statistics': provider_stats,
 | 
						|
            'scan_summary': self.logger.get_forensic_summary()
 | 
						|
        }
 | 
						|
 | 
						|
    def get_provider_info(self) -> Dict[str, Dict[str, Any]]:
 | 
						|
        info = {}
 | 
						|
        provider_dir = os.path.join(os.path.dirname(__file__), '..', 'providers')
 | 
						|
        for filename in os.listdir(provider_dir):
 | 
						|
            if filename.endswith('_provider.py') and not filename.startswith('base'):
 | 
						|
                module_name = f"providers.{filename[:-3]}"
 | 
						|
                try:
 | 
						|
                    module = importlib.import_module(module_name)
 | 
						|
                    for attribute_name in dir(module):
 | 
						|
                        attribute = getattr(module, attribute_name)
 | 
						|
                        if isinstance(attribute, type) and issubclass(attribute, BaseProvider) and attribute is not BaseProvider:
 | 
						|
                            provider_class = attribute
 | 
						|
                            temp_provider = provider_class(name=attribute_name, session_config=self.config)
 | 
						|
                            provider_name = temp_provider.get_name()
 | 
						|
                            live_provider = next((p for p in self.providers if p.get_name() == provider_name), None)
 | 
						|
                            info[provider_name] = {
 | 
						|
                                'display_name': temp_provider.get_display_name(),
 | 
						|
                                'requires_api_key': temp_provider.requires_api_key(),
 | 
						|
                                'statistics': live_provider.get_statistics() if live_provider else temp_provider.get_statistics(),
 | 
						|
                                'enabled': self.config.is_provider_enabled(provider_name),
 | 
						|
                                'rate_limit': self.config.get_rate_limit(provider_name),
 | 
						|
                            }
 | 
						|
                except Exception:
 | 
						|
                    traceback.print_exc()
 | 
						|
        return info |