431 lines
17 KiB
Python
431 lines
17 KiB
Python
#!/usr/bin/env python3
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"""Consolidated intrusion detection log scanner.
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Runs both copyparty and Nginx Proxy Manager (NPM) log analyzers,
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and outputs a single consolidated MikroTik RouterOS blocklist.
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"""
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from __future__ import annotations
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import argparse
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import os
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from dataclasses import dataclass, field
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from ..utils.blocklist_history import (
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committed_lines,
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cumulative_blocklist,
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current_file_lines,
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write_blocklist_report,
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)
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from ..utils.constants import (
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COPYPARTY_LOG_PATH,
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COPYPARTY_REPORT_DIR,
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DEFAULT_ERROR_RATIO,
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DEFAULT_MIN_DENIED,
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DEFAULT_MIN_ERRORS,
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DEFAULT_TOP,
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NPM_LOG_PATH,
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NPM_REPORT_DIR,
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REPORT_DIR,
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REPORT_RETENTION_DAYS,
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REPORT_RETENTION_MAX_FILES,
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SUBNET_THRESHOLD,
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)
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from ..firewall import MikrotikFirewall, write_blocklist_files
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from ..utils.retention import prune_report_dirs
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from ..copyparty import CopypartyAnalyzer
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from ..npm import NpmAnalyzer
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from ..utils.ip_utils import is_whitelisted
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from ..mikrotik import split_cidr_versions
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from ..utils.whois import consolidate_by_subnet
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def _sync_blocklist_to_db(connected: bool, desired_v4: list[str],
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desired_v6: list[str],
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added_by: str | None = None) -> dict | None:
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"""Best-effort grow-only sync of block targets into the SQLite ledger.
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Uses ``record_blocklist`` (add-only) so the ledger is the authoritative
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cumulative record: once an IP is ever blocked it stays active even after it
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leaves the scan window, matching the router's cumulative model. Returns the
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added delta or None if the DB is unavailable.
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"""
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try:
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from ..db import get_connection
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from ..db import repositories as repo
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conn = get_connection()
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result = repo.record_blocklist(
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conn, list(desired_v4) + list(desired_v6), added_by=added_by)
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# Retention policy: expire stale single-host entries after 30 days
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# while keeping CIDR ranges/subnets intact.
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pruned = repo.prune_old_single_ip_blocks(conn, older_than_days=30)
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result["pruned_single_ips"] = pruned
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return result
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except Exception as exc: # never break the scan for a DB issue
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print(f"WARN: could not sync blocklist to db ({exc})")
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return None
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def _db_complete_blocklist(desired_v4: list[str], desired_v6: list[str]):
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"""Complete cumulative blocklist from the DB ledger (B001).
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Returns ``(complete_v4, complete_v6)`` as **sets** (same contract as
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``cumulative_blocklist``) derived from the active blocklist ledger plus
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this scan's newly desired targets (in case the DB write for this scan has
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not run yet). Falls back to the git-history reconstruction when the DB is
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unavailable, so nothing regresses.
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"""
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try:
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from ..db import get_connection
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from ..db import repositories as repo
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conn = get_connection()
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active = [e["cidr"] for e in repo.active_blocklist(conn)]
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except Exception:
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active = []
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union = set(active) | set(desired_v4) | set(desired_v6)
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v4, v6 = split_cidr_versions(union)
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return set(v4), set(v6)
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@dataclass
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class ScanParams:
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"""Configuration for a consolidated scan.
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Shared by the CLI entry point and the web interface so both run the
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exact same pipeline.
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"""
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copyparty_log_path: str = COPYPARTY_LOG_PATH
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copyparty_report_dir: str = COPYPARTY_REPORT_DIR
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min_denied: int = DEFAULT_MIN_DENIED
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npm_log_path: str = NPM_LOG_PATH
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npm_report_dir: str = NPM_REPORT_DIR
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min_errors: int = DEFAULT_MIN_ERRORS
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error_ratio: float = DEFAULT_ERROR_RATIO
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report_dir: str = REPORT_DIR
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top: int = DEFAULT_TOP
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quiet: bool = False
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full: bool = False
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update_firewall: bool = False
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dry_run: bool = False
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@dataclass
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class ScanResult:
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"""Structured outcome of a consolidated scan."""
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ok: bool
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cp_exists: bool = False
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npm_exists: bool = False
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cp_candidates: int = 0
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npm_candidates: int = 0
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blocked_ips: int = 0
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blocked_targets: int = 0
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blocked_ipv4: list[str] = field(default_factory=list)
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blocked_ipv6: list[str] = field(default_factory=list)
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blocklist_v4_path: str | None = None
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blocklist_v6_path: str | None = None
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firewall_connected: bool = False
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firewall_changes: dict | None = None
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blocklist_report_path: str | None = None
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errors: list[str] = field(default_factory=list)
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def run_scan(params: ScanParams) -> ScanResult:
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"""Run the full consolidated scan pipeline and return structured results.
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Steps: connect to MikroTik (optional) -> snapshot state -> run copyparty
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+ NPM analyzers -> consolidate candidates -> write blocklists -> compare
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and apply firewall changes (optional).
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"""
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errors: list[str] = []
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# --- Step 0: open the SQLite store for this consolidated run -------------
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db_scan_id: int | None = None
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try:
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from ..db import get_connection
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from ..db import repositories as repo
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from ..utils.whitelists import sync_whitelists_to_db
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conn = get_connection()
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sync_whitelists_to_db()
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params_map = {
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"full": params.full, "dry_run": params.dry_run,
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"update_firewall": params.update_firewall,
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"quiet": params.quiet, "top": params.top,
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}
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db_scan_id = repo.start_scan(conn, "ids", params=params_map,
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full=params.full, dry_run=params.dry_run)
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except Exception as exc:
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print(f"WARN: sqlite store unavailable ({exc})")
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# --- Step 1-3: connect to MikroTik RouterOS and capture current state ---
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# If the router is unreachable we fall back to scan-only mode: still
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# generate reports and blocklists, but skip the firewall sync.
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firewall: MikrotikFirewall | None = None
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if params.update_firewall:
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firewall = MikrotikFirewall()
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try:
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firewall.connect()
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# Read current firewall rules + address lists and snapshot them to
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# reports/mikrotik/data/ and the git-diffable data/mikrotik/.
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firewall.save_state_report(params.report_dir)
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except Exception as e:
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message = f"could not read MikroTik router ({firewall.router_ip}): {e}"
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errors.append(message)
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print(f"\nWARNING: {message}")
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firewall.disconnect()
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firewall = None
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# --- Step 4: run copyparty + NPM analyzers -> blocklist candidates ------
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cp_analyzer = CopypartyAnalyzer(
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log_path=params.copyparty_log_path,
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report_dir=params.copyparty_report_dir,
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top=params.top,
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quiet=params.quiet,
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full=params.full,
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min_denied=params.min_denied,
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)
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npm_analyzer = NpmAnalyzer(
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log_path=params.npm_log_path,
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report_dir=params.npm_report_dir,
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top=params.top,
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quiet=params.quiet,
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full=params.full,
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min_errors=params.min_errors,
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error_ratio=params.error_ratio,
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)
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print("=== Running copyparty scan ===")
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cp_exists = True
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try:
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cp_analyzer.run(db_scan_id=db_scan_id)
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except Exception as e:
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errors.append(f"copyparty scan failed: {e}")
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print(f"Error running copyparty scan: {e}")
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cp_exists = False
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print("\n=== Running NPM scan ===")
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npm_exists = True
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try:
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npm_analyzer.run(db_scan_id=db_scan_id)
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except Exception as e:
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errors.append(f"NPM scan failed: {e}")
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print(f"Error running NPM scan: {e}")
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npm_exists = False
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if not cp_exists and not npm_exists:
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message = "Both scans failed. Unable to generate consolidated blocklist."
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errors.append(message)
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print(f"\n{message}")
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if firewall is not None:
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firewall.disconnect()
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if db_scan_id is not None:
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try:
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from ..db import get_connection
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from ..db import repositories as repo
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repo.finish_scan(get_connection(), db_scan_id, status="error",
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error="; ".join(errors))
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except Exception:
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pass
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return ScanResult(ok=False, errors=errors)
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# Consolidate block candidates
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consolidated_candidates: set[str] = set()
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if cp_exists:
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consolidated_candidates.update(cp_analyzer.block_candidates())
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if npm_exists:
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consolidated_candidates.update(npm_analyzer.block_candidates())
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# Exclude whitelisted IPs
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final_blocked_ips = {
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ip for ip in consolidated_candidates if not is_whitelisted(ip)}
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# Group into subnets via WHOIS if multiple malicious IPs in same subnet
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print("\nGrouping blocked IPs into subnets using WHOIS...")
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final_blocked_targets = consolidate_by_subnet(
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final_blocked_ips, threshold=SUBNET_THRESHOLD)
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blocked_ipv4, blocked_ipv6 = split_cidr_versions(final_blocked_targets)
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cp_candidates = len(cp_analyzer.block_candidates()) if cp_exists else 0
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npm_candidates = len(npm_analyzer.block_candidates()) if npm_exists else 0
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print("\n=== Consolidated Summary ===")
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print(f"copyparty block candidates: {cp_candidates}")
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print(f"NPM block candidates: {npm_candidates}")
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print(f"Total unified blocked IPs: {len(final_blocked_ips)}")
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print(f"Total target blocks/subnets: {len(final_blocked_targets)}")
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# --- Step 6: write consolidated blocklists to reports/app/data ----------
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# Capture the previous blocklist state BEFORE the files are overwritten so
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# the change report can compute the complete-set delta.
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app_data_dir = os.path.join(params.report_dir, "app", "data")
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blocklist_v4_path = os.path.join(app_data_dir, "blocklist_ipv4.txt")
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blocklist_v6_path = os.path.join(app_data_dir, "blocklist_ipv6.txt")
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prev_v4 = current_file_lines(blocklist_v4_path)
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prev_v6 = current_file_lines(blocklist_v6_path)
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history_v4 = committed_lines(blocklist_v4_path)
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history_v6 = committed_lines(blocklist_v6_path)
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write_blocklist_files(blocked_ipv4, blocked_ipv6, params.report_dir)
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print(f"blocklist files:\n {blocklist_v4_path}\n {blocklist_v6_path}")
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# --- Steps 5+7: compare current state with candidates and apply ---------
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firewall_changes: dict | None = None
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blocklist_report_path: str | None = None
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if firewall is not None:
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try:
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firewall_changes = firewall.sync_blocklist(
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blocked_ipv4, blocked_ipv6, dry_run=params.dry_run,
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report_dir=params.report_dir)
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finally:
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firewall.disconnect()
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action = "Would" if params.dry_run else ""
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print(f"{action} add {len(firewall_changes['added_ipv4'])} IPv4 and "
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f"{len(firewall_changes['added_ipv6'])} IPv6 addresses; "
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f"remove {len(firewall_changes['removed_ipv4'])} IPv4 and "
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f"{len(firewall_changes['removed_ipv6'])} IPv6 addresses.")
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# Timestamped change report — only when the router was reachable.
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# Source of truth for the cumulative set: the SQLite |ledger| first
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# (B001), falling back to the git-history reconstruction only if the
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# DB is unavailable.
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complete_v4, complete_v6 = _db_complete_blocklist(
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blocked_ipv4, blocked_ipv6)
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if not complete_v4 and not complete_v6:
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complete_v4, complete_v6 = cumulative_blocklist(
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blocklist_v4_path, blocklist_v6_path,
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blocked_ipv4, blocked_ipv6)
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blocklist_report_path = write_blocklist_report(
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params.report_dir,
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history_v4=history_v4, history_v6=history_v6,
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prev_v4=prev_v4, prev_v6=prev_v6,
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complete_v4=complete_v4, complete_v6=complete_v6,
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firewall_changes=firewall_changes,
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dry_run=params.dry_run,
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errors=errors)
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print(f"blocklist report: {blocklist_report_path}")
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# --- Step 8: prune old reports (retention) ------------------------------
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# Each report subdirectory keeps at most REPORT_RETENTION_MAX_FILES files,
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# all newer than REPORT_RETENTION_DAYS days. The blocklist files in
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# ``app/data`` are always protected. ``--dry-run`` only previews.
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pruned = prune_report_dirs(
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params.report_dir, params.copyparty_report_dir, params.npm_report_dir,
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dry_run=params.dry_run)
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total_pruned = sum(len(paths) for paths in pruned.values())
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action = "Would prune" if params.dry_run else "Pruned"
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print(f"{action} {total_pruned} report file(s) "
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f"(keep {REPORT_RETENTION_DAYS}d / "
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f"max {REPORT_RETENTION_MAX_FILES} per dir)")
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# --- Step 9: persist consolidated results to SQLite ---------------------
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# Sync the blocklist ledger and close out the scan record regardless of
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# whether the router sync was attempted.
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_sync_blocklist_to_db(
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firewall is not None, blocked_ipv4, blocked_ipv6,
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added_by=("scan" if db_scan_id is None else f"scan:{db_scan_id}"))
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if db_scan_id is not None:
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try:
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from ..db import get_connection
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from ..db import repositories as repo
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conn = get_connection()
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result_payload = {
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"ok": True,
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"cp_candidates": cp_candidates,
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"npm_candidates": npm_candidates,
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"blocked_ips": len(final_blocked_ips),
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"blocked_targets": len(final_blocked_targets),
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"firewall_connected": firewall is not None,
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}
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repo.finish_scan(
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conn, db_scan_id, status="done",
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result=result_payload, log_files=0,
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request_count=(cp_analyzer and len(cp_analyzer.requests) or 0)
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+ (npm_analyzer and len(npm_analyzer.requests) or 0),
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error="; ".join(errors) or None,
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)
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except Exception as exc:
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print(f"WARN: could not finalize scan in db ({exc})")
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return ScanResult(
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ok=True,
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cp_exists=cp_exists,
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npm_exists=npm_exists,
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cp_candidates=cp_candidates,
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npm_candidates=npm_candidates,
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blocked_ips=len(final_blocked_ips),
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blocked_targets=len(final_blocked_targets),
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blocked_ipv4=blocked_ipv4,
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blocked_ipv6=blocked_ipv6,
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blocklist_v4_path=blocklist_v4_path,
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blocklist_v6_path=blocklist_v6_path,
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firewall_connected=firewall is not None,
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firewall_changes=firewall_changes,
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blocklist_report_path=blocklist_report_path,
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errors=errors,
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)
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def _build_parser() -> argparse.ArgumentParser:
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parser = argparse.ArgumentParser(
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description="Consolidated IDS Scanner: run copyparty + NPM analyzers and generate unified blocklist."
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)
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# copyparty arguments
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parser.add_argument("--copyparty-log-path", default=COPYPARTY_LOG_PATH,
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help=f"copyparty log directory (default: {COPYPARTY_LOG_PATH})")
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parser.add_argument("--copyparty-report-dir", default=COPYPARTY_REPORT_DIR,
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help=f"copyparty report directory (default: {COPYPARTY_REPORT_DIR})")
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parser.add_argument("--min-denied", type=int, default=DEFAULT_MIN_DENIED,
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help=f"minimum copyparty denied hits before flagging (default: {DEFAULT_MIN_DENIED})")
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# NPM arguments
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parser.add_argument("--npm-log-path", default=NPM_LOG_PATH,
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help=f"NPM log directory (default: {NPM_LOG_PATH})")
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parser.add_argument("--npm-report-dir", default=NPM_REPORT_DIR,
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help=f"NPM report directory (default: {NPM_REPORT_DIR})")
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parser.add_argument("--min-errors", type=int, default=DEFAULT_MIN_ERRORS,
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help=f"minimum NPM error responses to flag (default: {DEFAULT_MIN_ERRORS})")
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parser.add_argument("--error-ratio", type=float, default=DEFAULT_ERROR_RATIO,
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help=f"minimum NPM error ratio to flag (default: {DEFAULT_ERROR_RATIO})")
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# Shared arguments
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parser.add_argument("--report-dir", default=REPORT_DIR,
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help=f"consolidated reports directory (default: {REPORT_DIR})")
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parser.add_argument("--top", type=int, default=DEFAULT_TOP,
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help=f"rows in the top-IP tables (default: {DEFAULT_TOP})")
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parser.add_argument("--quiet", action="store_true",
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help="write files, suppress console reports")
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parser.add_argument("--full", action="store_true",
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help="rescan all log files from the start (ignore incremental state)")
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parser.add_argument("--update-firewall", action="store_true",
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help="synchronize the MikroTik Blocked list after scanning")
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parser.add_argument("--dry-run", action="store_true",
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help="preview firewall changes without applying them")
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return parser
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def main(argv: list[str] | None = None) -> None:
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args = _build_parser().parse_args(argv)
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params = ScanParams(
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copyparty_log_path=args.copyparty_log_path,
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copyparty_report_dir=args.copyparty_report_dir,
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min_denied=args.min_denied,
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npm_log_path=args.npm_log_path,
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npm_report_dir=args.npm_report_dir,
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min_errors=args.min_errors,
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error_ratio=args.error_ratio,
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report_dir=args.report_dir,
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top=args.top,
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quiet=args.quiet,
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full=args.full,
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update_firewall=args.update_firewall,
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dry_run=args.dry_run,
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)
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run_scan(params)
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if __name__ == "__main__":
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main()
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