1258 lines
40 KiB
Python
1258 lines
40 KiB
Python
from __future__ import annotations
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import glob
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import json
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import os
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import re
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import shutil
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from dataclasses import dataclass, asdict
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from typing import Dict, List, Optional, Set
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from .systemd import (
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list_enabled_services,
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list_enabled_timers,
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get_unit_info,
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get_timer_info,
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UnitQueryError,
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)
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from .debian import (
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build_dpkg_etc_index,
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dpkg_owner,
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file_md5,
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list_manual_packages,
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parse_status_conffiles,
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read_pkg_md5sums,
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stat_triplet,
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)
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from .ignore import IgnorePolicy
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from .pathfilter import PathFilter, expand_includes
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from .accounts import collect_non_system_users
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@dataclass
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class ManagedFile:
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path: str
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src_rel: str
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owner: str
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group: str
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mode: str
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reason: str
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@dataclass
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class ExcludedFile:
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path: str
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reason: str
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@dataclass
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class ServiceSnapshot:
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unit: str
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role_name: str
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packages: List[str]
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active_state: Optional[str]
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sub_state: Optional[str]
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unit_file_state: Optional[str]
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condition_result: Optional[str]
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managed_files: List[ManagedFile]
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excluded: List[ExcludedFile]
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notes: List[str]
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@dataclass
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class PackageSnapshot:
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package: str
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role_name: str
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managed_files: List[ManagedFile]
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excluded: List[ExcludedFile]
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notes: List[str]
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@dataclass
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class UsersSnapshot:
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role_name: str
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users: List[dict]
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managed_files: List[ManagedFile]
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excluded: List[ExcludedFile]
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notes: List[str]
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@dataclass
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class EtcCustomSnapshot:
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role_name: str
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managed_files: List[ManagedFile]
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excluded: List[ExcludedFile]
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notes: List[str]
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@dataclass
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class UsrLocalCustomSnapshot:
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role_name: str
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managed_files: List[ManagedFile]
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excluded: List[ExcludedFile]
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notes: List[str]
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@dataclass
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class ExtraPathsSnapshot:
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role_name: str
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include_patterns: List[str]
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exclude_patterns: List[str]
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managed_files: List[ManagedFile]
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excluded: List[ExcludedFile]
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notes: List[str]
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ALLOWED_UNOWNED_EXTS = {
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".cnf",
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".conf",
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".cfg",
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".ini",
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".json",
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".link",
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".mount",
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".netdev",
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".network",
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".path",
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".rules",
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".service",
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".socket",
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".target",
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".timer",
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".toml",
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".yaml",
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".yml",
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"", # allow extensionless (common in /etc/default and /etc/init.d)
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}
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MAX_UNOWNED_FILES_PER_ROLE = 400
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# Directories that are shared across many packages; never attribute unowned files in these trees to a single package.
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SHARED_ETC_TOPDIRS = {
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"apparmor.d",
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"apt",
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"cron.d",
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"cron.daily",
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"cron.weekly",
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"cron.monthly",
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"cron.hourly",
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"default",
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"init.d",
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"logrotate.d",
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"modprobe.d",
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"network",
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"pam.d",
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"ssh",
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"ssl",
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"sudoers.d",
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"sysctl.d",
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"systemd",
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}
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def _safe_name(s: str) -> str:
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out: List[str] = []
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for ch in s:
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out.append(ch if ch.isalnum() or ch in ("_", "-") else "_")
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return "".join(out).replace("-", "_")
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def _role_id(raw: str) -> str:
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# normalise separators first
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s = re.sub(r"[^A-Za-z0-9]+", "_", raw)
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# split CamelCase -> snake_case
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s = re.sub(r"([a-z0-9])([A-Z])", r"\1_\2", s)
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s = s.lower()
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s = re.sub(r"_+", "_", s).strip("_")
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if not re.match(r"^[a-z_]", s):
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s = "r_" + s
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return s
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def _role_name_from_unit(unit: str) -> str:
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base = _role_id(unit.removesuffix(".service"))
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return _safe_name(base)
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def _role_name_from_pkg(pkg: str) -> str:
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return _safe_name(pkg)
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def _copy_into_bundle(
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bundle_dir: str, role_name: str, abs_path: str, src_rel: str
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) -> None:
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dst = os.path.join(bundle_dir, "artifacts", role_name, src_rel)
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os.makedirs(os.path.dirname(dst), exist_ok=True)
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shutil.copy2(abs_path, dst)
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def _is_confish(path: str) -> bool:
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base = os.path.basename(path)
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_, ext = os.path.splitext(base)
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return ext in ALLOWED_UNOWNED_EXTS
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def _hint_names(unit: str, pkgs: Set[str]) -> Set[str]:
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base = unit.removesuffix(".service")
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hints = {base}
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if "@" in base:
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hints.add(base.split("@", 1)[0])
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hints |= set(pkgs)
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hints |= {h.split(".", 1)[0] for h in list(hints) if "." in h}
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return {h for h in hints if h}
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def _add_pkgs_from_etc_topdirs(
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hints: Set[str], topdir_to_pkgs: Dict[str, Set[str]], pkgs: Set[str]
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) -> None:
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for h in hints:
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for p in topdir_to_pkgs.get(h, set()):
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pkgs.add(p)
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def _maybe_add_specific_paths(hints: Set[str]) -> List[str]:
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paths: List[str] = []
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for h in hints:
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paths.extend(
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[
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f"/etc/default/{h}",
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f"/etc/init.d/{h}",
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f"/etc/sysctl.d/{h}.conf",
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f"/etc/logrotate.d/{h}",
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]
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)
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return paths
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def _scan_unowned_under_roots(
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roots: List[str],
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owned_etc: Set[str],
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limit: int = MAX_UNOWNED_FILES_PER_ROLE,
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*,
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confish_only: bool = True,
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) -> List[str]:
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found: List[str] = []
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for root in roots:
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if not os.path.isdir(root):
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continue
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for dirpath, _, filenames in os.walk(root):
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if len(found) >= limit:
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return found
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for fn in filenames:
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if len(found) >= limit:
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return found
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p = os.path.join(dirpath, fn)
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if not p.startswith("/etc/"):
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continue
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if p in owned_etc:
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continue
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if not os.path.isfile(p) or os.path.islink(p):
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continue
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if confish_only and not _is_confish(p):
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continue
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found.append(p)
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return found
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def _topdirs_for_package(pkg: str, pkg_to_etc_paths: Dict[str, List[str]]) -> Set[str]:
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topdirs: Set[str] = set()
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for path in pkg_to_etc_paths.get(pkg, []):
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parts = path.split("/", 3)
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if len(parts) >= 3 and parts[1] == "etc" and parts[2]:
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topdirs.add(parts[2])
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return topdirs
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# -------------------------
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# System capture helpers
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# -------------------------
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_APT_SOURCE_GLOBS = [
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"/etc/apt/sources.list",
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"/etc/apt/sources.list.d/*.list",
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"/etc/apt/sources.list.d/*.sources",
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]
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_APT_MISC_GLOBS = [
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"/etc/apt/apt.conf",
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"/etc/apt/apt.conf.d/*",
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"/etc/apt/preferences",
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"/etc/apt/preferences.d/*",
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"/etc/apt/auth.conf",
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"/etc/apt/auth.conf.d/*",
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"/etc/apt/trusted.gpg",
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"/etc/apt/trusted.gpg.d/*",
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"/etc/apt/keyrings/*",
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]
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_SYSTEM_CAPTURE_GLOBS: List[tuple[str, str]] = [
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# mounts
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("/etc/fstab", "system_mounts"),
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("/etc/crypttab", "system_mounts"),
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# logrotate
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("/etc/logrotate.conf", "system_logrotate"),
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("/etc/logrotate.d/*", "system_logrotate"),
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# sysctl / modules
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("/etc/sysctl.conf", "system_sysctl"),
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("/etc/sysctl.d/*", "system_sysctl"),
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("/etc/modprobe.d/*", "system_modprobe"),
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("/etc/modules", "system_modprobe"),
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("/etc/modules-load.d/*", "system_modprobe"),
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# cron
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("/etc/crontab", "system_cron"),
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("/etc/cron.d/*", "system_cron"),
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("/etc/anacrontab", "system_cron"),
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("/etc/anacron/*", "system_cron"),
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("/var/spool/cron/crontabs/*", "system_cron"),
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("/var/spool/crontabs/*", "system_cron"),
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# network
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("/etc/netplan/*", "system_network"),
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("/etc/systemd/network/*", "system_network"),
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("/etc/network/interfaces", "system_network"),
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("/etc/network/interfaces.d/*", "system_network"),
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("/etc/resolvconf.conf", "system_network"),
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("/etc/resolvconf/resolv.conf.d/*", "system_network"),
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# firewall
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("/etc/nftables.conf", "system_firewall"),
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("/etc/nftables.d/*", "system_firewall"),
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("/etc/iptables/rules.v4", "system_firewall"),
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("/etc/iptables/rules.v6", "system_firewall"),
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("/etc/ufw/*", "system_firewall"),
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("/etc/default/ufw", "system_firewall"),
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# other
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("/etc/rc.local", "system_rc"),
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]
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def _iter_matching_files(spec: str, *, cap: int = 2000) -> List[str]:
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"""Expand a glob spec and also walk directories to collect files."""
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out: List[str] = []
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for p in glob.glob(spec):
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if len(out) >= cap:
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break
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if os.path.islink(p):
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continue
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if os.path.isfile(p):
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out.append(p)
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continue
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if os.path.isdir(p):
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for dirpath, _, filenames in os.walk(p):
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for fn in filenames:
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if len(out) >= cap:
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break
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fp = os.path.join(dirpath, fn)
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if os.path.islink(fp) or not os.path.isfile(fp):
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continue
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out.append(fp)
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if len(out) >= cap:
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break
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return out
|
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|
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|
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def _parse_apt_signed_by(source_files: List[str]) -> Set[str]:
|
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"""Return absolute keyring paths referenced via signed-by / Signed-By."""
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out: Set[str] = set()
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# deb line: deb [signed-by=/usr/share/keyrings/foo.gpg] ...
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re_signed_by = re.compile(r"signed-by\s*=\s*([^\]\s]+)", re.IGNORECASE)
|
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# deb822: Signed-By: /usr/share/keyrings/foo.gpg
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re_signed_by_hdr = re.compile(r"^\s*Signed-By\s*:\s*(.+)$", re.IGNORECASE)
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for sf in source_files:
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try:
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with open(sf, "r", encoding="utf-8", errors="replace") as f:
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for raw in f:
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line = raw.strip()
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if not line or line.startswith("#"):
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continue
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m = re_signed_by_hdr.match(line)
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if m:
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val = m.group(1).strip()
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if val.startswith("|"):
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continue
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toks = re.split(r"[\s,]+", val)
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for t in toks:
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if t.startswith("/"):
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out.add(t)
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continue
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|
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# Try bracketed options first (common for .list files)
|
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if "[" in line and "]" in line:
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bracket = line.split("[", 1)[1].split("]", 1)[0]
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for mm in re_signed_by.finditer(bracket):
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val = mm.group(1).strip().strip("\"'")
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for t in re.split(r"[\s,]+", val):
|
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if t.startswith("/"):
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out.add(t)
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continue
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|
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# Fallback: signed-by= in whole line
|
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for mm in re_signed_by.finditer(line):
|
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val = mm.group(1).strip().strip("\"'")
|
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for t in re.split(r"[\s,]+", val):
|
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if t.startswith("/"):
|
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out.add(t)
|
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except OSError:
|
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continue
|
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|
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return out
|
|
|
|
|
|
def _iter_system_capture_paths() -> List[tuple[str, str]]:
|
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"""Return (path, reason) pairs for essential system config/state."""
|
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out: List[tuple[str, str]] = []
|
|
|
|
# APT: capture sources and related config
|
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apt_sources: List[str] = []
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for g in _APT_SOURCE_GLOBS:
|
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apt_sources.extend(_iter_matching_files(g))
|
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for p in sorted(set(apt_sources)):
|
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out.append((p, "system_apt_sources"))
|
|
|
|
# APT: misc config files/dirs
|
|
for g in _APT_MISC_GLOBS:
|
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for p in _iter_matching_files(g):
|
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out.append((p, "system_apt_config"))
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|
|
|
# APT: referenced keyrings (may live outside /etc)
|
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signed_by = _parse_apt_signed_by(sorted(set(apt_sources)))
|
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for p in sorted(signed_by):
|
|
if os.path.islink(p) or not os.path.isfile(p):
|
|
continue
|
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out.append((p, "system_apt_keyring"))
|
|
|
|
# Other system config/state globs
|
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for spec, reason in _SYSTEM_CAPTURE_GLOBS:
|
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for p in _iter_matching_files(spec):
|
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out.append((p, reason))
|
|
|
|
# De-dup while preserving first reason
|
|
seen: Set[str] = set()
|
|
uniq: List[tuple[str, str]] = []
|
|
for p, r in out:
|
|
if p in seen:
|
|
continue
|
|
seen.add(p)
|
|
uniq.append((p, r))
|
|
return uniq
|
|
|
|
|
|
def harvest(
|
|
bundle_dir: str,
|
|
policy: Optional[IgnorePolicy] = None,
|
|
*,
|
|
dangerous: bool = False,
|
|
include_paths: Optional[List[str]] = None,
|
|
exclude_paths: Optional[List[str]] = None,
|
|
) -> str:
|
|
# If a policy is not supplied, build one. `--dangerous` relaxes secret
|
|
# detection and deny-glob skipping.
|
|
if policy is None:
|
|
policy = IgnorePolicy(dangerous=dangerous)
|
|
elif dangerous:
|
|
# If callers explicitly provided a policy but also requested
|
|
# dangerous behavior, honour the CLI intent.
|
|
policy.dangerous = True
|
|
os.makedirs(bundle_dir, exist_ok=True)
|
|
|
|
# User-provided includes/excludes. Excludes apply to all harvesting;
|
|
# includes are harvested into an extra role.
|
|
path_filter = PathFilter(include=include_paths or (), exclude=exclude_paths or ())
|
|
|
|
if hasattr(os, "geteuid") and os.geteuid() != 0:
|
|
print(
|
|
"Warning: not running as root; harvest may miss files or metadata.",
|
|
flush=True,
|
|
)
|
|
|
|
owned_etc, etc_owner_map, topdir_to_pkgs, pkg_to_etc_paths = build_dpkg_etc_index()
|
|
conffiles_by_pkg = parse_status_conffiles()
|
|
|
|
# -------------------------
|
|
# Service roles
|
|
# -------------------------
|
|
service_snaps: List[ServiceSnapshot] = []
|
|
for unit in list_enabled_services():
|
|
role = _role_name_from_unit(unit)
|
|
|
|
try:
|
|
ui = get_unit_info(unit)
|
|
except UnitQueryError as e:
|
|
service_snaps.append(
|
|
ServiceSnapshot(
|
|
unit=unit,
|
|
role_name=role,
|
|
packages=[],
|
|
active_state=None,
|
|
sub_state=None,
|
|
unit_file_state=None,
|
|
condition_result=None,
|
|
managed_files=[],
|
|
excluded=[],
|
|
notes=[str(e)],
|
|
)
|
|
)
|
|
continue
|
|
|
|
pkgs: Set[str] = set()
|
|
notes: List[str] = []
|
|
excluded: List[ExcludedFile] = []
|
|
managed: List[ManagedFile] = []
|
|
candidates: Dict[str, str] = {}
|
|
|
|
if ui.fragment_path:
|
|
p = dpkg_owner(ui.fragment_path)
|
|
if p:
|
|
pkgs.add(p)
|
|
|
|
for exe in ui.exec_paths:
|
|
p = dpkg_owner(exe)
|
|
if p:
|
|
pkgs.add(p)
|
|
|
|
for pth in ui.dropin_paths:
|
|
if pth.startswith("/etc/"):
|
|
candidates[pth] = "systemd_dropin"
|
|
|
|
for ef in ui.env_files:
|
|
ef = ef.lstrip("-")
|
|
if any(ch in ef for ch in "*?["):
|
|
for g in glob.glob(ef):
|
|
if g.startswith("/etc/") and os.path.isfile(g):
|
|
candidates[g] = "systemd_envfile"
|
|
else:
|
|
if ef.startswith("/etc/") and os.path.isfile(ef):
|
|
candidates[ef] = "systemd_envfile"
|
|
|
|
hints = _hint_names(unit, pkgs)
|
|
_add_pkgs_from_etc_topdirs(hints, topdir_to_pkgs, pkgs)
|
|
|
|
for sp in _maybe_add_specific_paths(hints):
|
|
if not os.path.exists(sp):
|
|
continue
|
|
if sp in etc_owner_map:
|
|
pkgs.add(etc_owner_map[sp])
|
|
else:
|
|
candidates.setdefault(sp, "custom_specific_path")
|
|
|
|
for pkg in sorted(pkgs):
|
|
conff = conffiles_by_pkg.get(pkg, {})
|
|
md5sums = read_pkg_md5sums(pkg)
|
|
for path in pkg_to_etc_paths.get(pkg, []):
|
|
if not os.path.isfile(path) or os.path.islink(path):
|
|
continue
|
|
if path in conff:
|
|
# Only capture conffiles when they differ from the package default.
|
|
try:
|
|
current = file_md5(path)
|
|
except OSError:
|
|
continue
|
|
if current != conff[path]:
|
|
candidates.setdefault(path, "modified_conffile")
|
|
continue
|
|
rel = path.lstrip("/")
|
|
baseline = md5sums.get(rel)
|
|
if baseline:
|
|
try:
|
|
current = file_md5(path)
|
|
except OSError:
|
|
continue
|
|
if current != baseline:
|
|
candidates.setdefault(path, "modified_packaged_file")
|
|
|
|
# Capture custom/unowned files living under /etc/<name> for this service.
|
|
#
|
|
# Historically we only captured "config-ish" files (by extension). That
|
|
# misses important runtime-generated artifacts like certificates and
|
|
# key material under service directories (e.g. /etc/openvpn/*.crt).
|
|
#
|
|
# To avoid exploding output for shared trees (e.g. /etc/systemd), keep
|
|
# the older "config-ish only" behavior for known shared topdirs.
|
|
any_roots: List[str] = []
|
|
confish_roots: List[str] = []
|
|
for h in hints:
|
|
roots_for_h = [f"/etc/{h}", f"/etc/{h}.d"]
|
|
if h in SHARED_ETC_TOPDIRS:
|
|
confish_roots.extend(roots_for_h)
|
|
else:
|
|
any_roots.extend(roots_for_h)
|
|
|
|
found: List[str] = []
|
|
found.extend(
|
|
_scan_unowned_under_roots(
|
|
any_roots,
|
|
owned_etc,
|
|
limit=MAX_UNOWNED_FILES_PER_ROLE,
|
|
confish_only=False,
|
|
)
|
|
)
|
|
if len(found) < MAX_UNOWNED_FILES_PER_ROLE:
|
|
found.extend(
|
|
_scan_unowned_under_roots(
|
|
confish_roots,
|
|
owned_etc,
|
|
limit=MAX_UNOWNED_FILES_PER_ROLE - len(found),
|
|
confish_only=True,
|
|
)
|
|
)
|
|
for pth in found:
|
|
candidates.setdefault(pth, "custom_unowned")
|
|
|
|
if not pkgs and not candidates:
|
|
notes.append(
|
|
"No packages or /etc candidates detected (unexpected for enabled service)."
|
|
)
|
|
|
|
for path, reason in sorted(candidates.items()):
|
|
if path_filter.is_excluded(path):
|
|
excluded.append(ExcludedFile(path=path, reason="user_excluded"))
|
|
continue
|
|
deny = policy.deny_reason(path)
|
|
if deny:
|
|
excluded.append(ExcludedFile(path=path, reason=deny))
|
|
continue
|
|
try:
|
|
owner, group, mode = stat_triplet(path)
|
|
except OSError:
|
|
excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
src_rel = path.lstrip("/")
|
|
try:
|
|
_copy_into_bundle(bundle_dir, role, path, src_rel)
|
|
except OSError:
|
|
excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
managed.append(
|
|
ManagedFile(
|
|
path=path,
|
|
src_rel=src_rel,
|
|
owner=owner,
|
|
group=group,
|
|
mode=mode,
|
|
reason=reason,
|
|
)
|
|
)
|
|
|
|
service_snaps.append(
|
|
ServiceSnapshot(
|
|
unit=unit,
|
|
role_name=role,
|
|
packages=sorted(pkgs),
|
|
active_state=ui.active_state,
|
|
sub_state=ui.sub_state,
|
|
unit_file_state=ui.unit_file_state,
|
|
condition_result=ui.condition_result,
|
|
managed_files=managed,
|
|
excluded=excluded,
|
|
notes=notes,
|
|
)
|
|
)
|
|
|
|
# -------------------------
|
|
# Enabled systemd timers
|
|
#
|
|
# Timers are typically related to a service/package, so we try to attribute
|
|
# timer unit overrides to their associated role rather than creating a
|
|
# standalone timer role. If we can't attribute a timer, it will fall back
|
|
# to etc_custom (if it's a custom /etc unit).
|
|
# -------------------------
|
|
timer_extra_by_pkg: Dict[str, List[str]] = {}
|
|
try:
|
|
enabled_timers = list_enabled_timers()
|
|
except Exception:
|
|
enabled_timers = []
|
|
|
|
service_snap_by_unit: Dict[str, ServiceSnapshot] = {
|
|
s.unit: s for s in service_snaps
|
|
}
|
|
|
|
for t in enabled_timers:
|
|
try:
|
|
ti = get_timer_info(t)
|
|
except Exception: # nosec
|
|
continue
|
|
|
|
timer_paths: List[str] = []
|
|
for pth in [ti.fragment_path, *ti.dropin_paths, *ti.env_files]:
|
|
if not pth:
|
|
continue
|
|
if not pth.startswith("/etc/"):
|
|
# Prefer capturing only custom/overridden units.
|
|
continue
|
|
if os.path.islink(pth) or not os.path.isfile(pth):
|
|
continue
|
|
timer_paths.append(pth)
|
|
|
|
if not timer_paths:
|
|
continue
|
|
|
|
# Primary attribution: timer -> trigger service role
|
|
snap = None
|
|
if ti.trigger_unit:
|
|
snap = service_snap_by_unit.get(ti.trigger_unit)
|
|
|
|
if snap is not None:
|
|
for path in timer_paths:
|
|
if path_filter.is_excluded(path):
|
|
snap.excluded.append(
|
|
ExcludedFile(path=path, reason="user_excluded")
|
|
)
|
|
continue
|
|
deny = policy.deny_reason(path)
|
|
if deny:
|
|
snap.excluded.append(ExcludedFile(path=path, reason=deny))
|
|
continue
|
|
try:
|
|
owner, group, mode = stat_triplet(path)
|
|
except OSError:
|
|
snap.excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
src_rel = path.lstrip("/")
|
|
try:
|
|
_copy_into_bundle(bundle_dir, snap.role_name, path, src_rel)
|
|
except OSError:
|
|
snap.excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
snap.managed_files.append(
|
|
ManagedFile(
|
|
path=path,
|
|
src_rel=src_rel,
|
|
owner=owner,
|
|
group=group,
|
|
mode=mode,
|
|
reason="related_timer",
|
|
)
|
|
)
|
|
continue
|
|
|
|
# Secondary attribution: associate timer overrides with a package role
|
|
# (useful when a timer triggers a service that isn't enabled).
|
|
pkgs: Set[str] = set()
|
|
if ti.fragment_path:
|
|
p = dpkg_owner(ti.fragment_path)
|
|
if p:
|
|
pkgs.add(p)
|
|
if ti.trigger_unit and ti.trigger_unit.endswith(".service"):
|
|
try:
|
|
ui = get_unit_info(ti.trigger_unit)
|
|
if ui.fragment_path:
|
|
p = dpkg_owner(ui.fragment_path)
|
|
if p:
|
|
pkgs.add(p)
|
|
for exe in ui.exec_paths:
|
|
p = dpkg_owner(exe)
|
|
if p:
|
|
pkgs.add(p)
|
|
except Exception: # nosec
|
|
pass
|
|
|
|
for pkg in pkgs:
|
|
timer_extra_by_pkg.setdefault(pkg, []).extend(timer_paths)
|
|
|
|
# -------------------------
|
|
# Manually installed package roles
|
|
# -------------------------
|
|
manual_pkgs = list_manual_packages()
|
|
# Avoid duplicate roles: if a manual package is already managed by any service role, skip its pkg_<name> role.
|
|
covered_by_services: Set[str] = set()
|
|
for s in service_snaps:
|
|
for p in s.packages:
|
|
covered_by_services.add(p)
|
|
|
|
manual_pkgs_skipped: List[str] = []
|
|
pkg_snaps: List[PackageSnapshot] = []
|
|
|
|
for pkg in manual_pkgs:
|
|
if pkg in covered_by_services:
|
|
manual_pkgs_skipped.append(pkg)
|
|
continue
|
|
role = _role_name_from_pkg(pkg)
|
|
notes: List[str] = []
|
|
excluded: List[ExcludedFile] = []
|
|
managed: List[ManagedFile] = []
|
|
candidates: Dict[str, str] = {}
|
|
|
|
for tpath in timer_extra_by_pkg.get(pkg, []):
|
|
candidates.setdefault(tpath, "related_timer")
|
|
|
|
conff = conffiles_by_pkg.get(pkg, {})
|
|
md5sums = read_pkg_md5sums(pkg)
|
|
|
|
for path in pkg_to_etc_paths.get(pkg, []):
|
|
if not os.path.isfile(path) or os.path.islink(path):
|
|
continue
|
|
if path in conff:
|
|
try:
|
|
current = file_md5(path)
|
|
except OSError:
|
|
continue
|
|
if current != conff[path]:
|
|
candidates.setdefault(path, "modified_conffile")
|
|
continue
|
|
rel = path.lstrip("/")
|
|
baseline = md5sums.get(rel)
|
|
if baseline:
|
|
try:
|
|
current = file_md5(path)
|
|
except OSError:
|
|
continue
|
|
if current != baseline:
|
|
candidates.setdefault(path, "modified_packaged_file")
|
|
|
|
topdirs = _topdirs_for_package(pkg, pkg_to_etc_paths)
|
|
roots: List[str] = []
|
|
for td in sorted(topdirs):
|
|
if td in SHARED_ETC_TOPDIRS:
|
|
continue
|
|
roots.extend([f"/etc/{td}", f"/etc/{td}.d"])
|
|
roots.extend([f"/etc/default/{td}"])
|
|
roots.extend([f"/etc/init.d/{td}"])
|
|
roots.extend([f"/etc/logrotate.d/{td}"])
|
|
roots.extend([f"/etc/sysctl.d/{td}.conf"])
|
|
|
|
# Capture any custom/unowned files under /etc/<topdir> for this
|
|
# manually-installed package. This may include runtime-generated
|
|
# artifacts like certificates, key files, and helper scripts which are
|
|
# not owned by any .deb.
|
|
for pth in _scan_unowned_under_roots(
|
|
[r for r in roots if os.path.isdir(r)],
|
|
owned_etc,
|
|
confish_only=False,
|
|
):
|
|
candidates.setdefault(pth, "custom_unowned")
|
|
|
|
for r in roots:
|
|
if os.path.isfile(r) and not os.path.islink(r):
|
|
if r not in owned_etc and _is_confish(r):
|
|
candidates.setdefault(r, "custom_specific_path")
|
|
|
|
for path, reason in sorted(candidates.items()):
|
|
if path_filter.is_excluded(path):
|
|
excluded.append(ExcludedFile(path=path, reason="user_excluded"))
|
|
continue
|
|
deny = policy.deny_reason(path)
|
|
if deny:
|
|
excluded.append(ExcludedFile(path=path, reason=deny))
|
|
continue
|
|
try:
|
|
owner, group, mode = stat_triplet(path)
|
|
except OSError:
|
|
excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
src_rel = path.lstrip("/")
|
|
try:
|
|
_copy_into_bundle(bundle_dir, role, path, src_rel)
|
|
except OSError:
|
|
excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
managed.append(
|
|
ManagedFile(
|
|
path=path,
|
|
src_rel=src_rel,
|
|
owner=owner,
|
|
group=group,
|
|
mode=mode,
|
|
reason=reason,
|
|
)
|
|
)
|
|
|
|
if not pkg_to_etc_paths.get(pkg, []) and not managed:
|
|
notes.append("No /etc files detected for this package.")
|
|
|
|
pkg_snaps.append(
|
|
PackageSnapshot(
|
|
package=pkg,
|
|
role_name=role,
|
|
managed_files=managed,
|
|
excluded=excluded,
|
|
notes=notes,
|
|
)
|
|
)
|
|
|
|
# -------------------------
|
|
# Users role (non-system users)
|
|
# -------------------------
|
|
users_notes: List[str] = []
|
|
users_excluded: List[ExcludedFile] = []
|
|
users_managed: List[ManagedFile] = []
|
|
users_list: List[dict] = []
|
|
|
|
try:
|
|
user_records = collect_non_system_users()
|
|
except Exception as e:
|
|
user_records = []
|
|
users_notes.append(f"Failed to enumerate users: {e!r}")
|
|
|
|
users_role_name = "users"
|
|
|
|
for u in user_records:
|
|
users_list.append(
|
|
{
|
|
"name": u.name,
|
|
"uid": u.uid,
|
|
"gid": u.gid,
|
|
"gecos": u.gecos,
|
|
"home": u.home,
|
|
"shell": u.shell,
|
|
"primary_group": u.primary_group,
|
|
"supplementary_groups": u.supplementary_groups,
|
|
}
|
|
)
|
|
|
|
# Copy only safe SSH public material: authorized_keys + *.pub
|
|
for sf in u.ssh_files:
|
|
if path_filter.is_excluded(sf):
|
|
users_excluded.append(ExcludedFile(path=sf, reason="user_excluded"))
|
|
continue
|
|
deny = policy.deny_reason(sf)
|
|
if deny:
|
|
users_excluded.append(ExcludedFile(path=sf, reason=deny))
|
|
continue
|
|
try:
|
|
owner, group, mode = stat_triplet(sf)
|
|
except OSError:
|
|
users_excluded.append(ExcludedFile(path=sf, reason="unreadable"))
|
|
continue
|
|
src_rel = sf.lstrip("/")
|
|
try:
|
|
_copy_into_bundle(bundle_dir, users_role_name, sf, src_rel)
|
|
except OSError:
|
|
users_excluded.append(ExcludedFile(path=sf, reason="unreadable"))
|
|
continue
|
|
reason = (
|
|
"authorized_keys"
|
|
if sf.endswith("/authorized_keys")
|
|
else "ssh_public_key"
|
|
)
|
|
users_managed.append(
|
|
ManagedFile(
|
|
path=sf,
|
|
src_rel=src_rel,
|
|
owner=owner,
|
|
group=group,
|
|
mode=mode,
|
|
reason=reason,
|
|
)
|
|
)
|
|
|
|
users_snapshot = UsersSnapshot(
|
|
role_name=users_role_name,
|
|
users=users_list,
|
|
managed_files=users_managed,
|
|
excluded=users_excluded,
|
|
notes=users_notes,
|
|
)
|
|
|
|
# -------------------------
|
|
# etc_custom role (unowned /etc files not already attributed elsewhere)
|
|
# -------------------------
|
|
etc_notes: List[str] = []
|
|
etc_excluded: List[ExcludedFile] = []
|
|
etc_managed: List[ManagedFile] = []
|
|
etc_role_name = "etc_custom"
|
|
|
|
# Build a set of files already captured by other roles.
|
|
already: Set[str] = set()
|
|
for s in service_snaps:
|
|
for mf in s.managed_files:
|
|
already.add(mf.path)
|
|
for p in pkg_snaps:
|
|
for mf in p.managed_files:
|
|
already.add(mf.path)
|
|
for mf in users_managed:
|
|
already.add(mf.path)
|
|
|
|
# Capture essential system config/state (even if package-owned).
|
|
for path, reason in _iter_system_capture_paths():
|
|
if path in already:
|
|
continue
|
|
|
|
if path_filter.is_excluded(path):
|
|
etc_excluded.append(ExcludedFile(path=path, reason="user_excluded"))
|
|
continue
|
|
|
|
deny = policy.deny_reason(path)
|
|
if deny:
|
|
etc_excluded.append(ExcludedFile(path=path, reason=deny))
|
|
continue
|
|
|
|
try:
|
|
owner, group, mode = stat_triplet(path)
|
|
except OSError:
|
|
etc_excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
|
|
src_rel = path.lstrip("/")
|
|
try:
|
|
_copy_into_bundle(bundle_dir, etc_role_name, path, src_rel)
|
|
except OSError:
|
|
etc_excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
|
|
etc_managed.append(
|
|
ManagedFile(
|
|
path=path,
|
|
src_rel=src_rel,
|
|
owner=owner,
|
|
group=group,
|
|
mode=mode,
|
|
reason=reason,
|
|
)
|
|
)
|
|
already.add(path)
|
|
|
|
# Walk /etc for remaining unowned config-ish files
|
|
scanned = 0
|
|
for dirpath, _, filenames in os.walk("/etc"):
|
|
for fn in filenames:
|
|
path = os.path.join(dirpath, fn)
|
|
if path in already:
|
|
continue
|
|
if path in owned_etc:
|
|
continue
|
|
if not os.path.isfile(path) or os.path.islink(path):
|
|
continue
|
|
if not _is_confish(path):
|
|
continue
|
|
|
|
if path_filter.is_excluded(path):
|
|
etc_excluded.append(ExcludedFile(path=path, reason="user_excluded"))
|
|
continue
|
|
|
|
deny = policy.deny_reason(path)
|
|
if deny:
|
|
etc_excluded.append(ExcludedFile(path=path, reason=deny))
|
|
continue
|
|
|
|
try:
|
|
owner, group, mode = stat_triplet(path)
|
|
except OSError:
|
|
etc_excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
|
|
src_rel = path.lstrip("/")
|
|
try:
|
|
_copy_into_bundle(bundle_dir, etc_role_name, path, src_rel)
|
|
except OSError:
|
|
etc_excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
|
|
etc_managed.append(
|
|
ManagedFile(
|
|
path=path,
|
|
src_rel=src_rel,
|
|
owner=owner,
|
|
group=group,
|
|
mode=mode,
|
|
reason="custom_unowned",
|
|
)
|
|
)
|
|
scanned += 1
|
|
if scanned >= 2000:
|
|
etc_notes.append(
|
|
"Reached file cap (2000) while scanning /etc for unowned files."
|
|
)
|
|
break
|
|
if scanned >= 2000:
|
|
break
|
|
|
|
etc_custom_snapshot = EtcCustomSnapshot(
|
|
role_name=etc_role_name,
|
|
managed_files=etc_managed,
|
|
excluded=etc_excluded,
|
|
notes=etc_notes,
|
|
)
|
|
|
|
# -------------------------
|
|
# usr_local_custom role (/usr/local/etc + /usr/local/bin scripts)
|
|
# -------------------------
|
|
ul_notes: List[str] = []
|
|
ul_excluded: List[ExcludedFile] = []
|
|
ul_managed: List[ManagedFile] = []
|
|
ul_role_name = "usr_local_custom"
|
|
|
|
# Extend the already-captured set with etc_custom.
|
|
already_all: Set[str] = set(already)
|
|
for mf in etc_managed:
|
|
already_all.add(mf.path)
|
|
|
|
def _scan_usr_local_tree(
|
|
root: str, *, require_executable: bool, cap: int, reason: str
|
|
) -> None:
|
|
scanned = 0
|
|
if not os.path.isdir(root):
|
|
return
|
|
for dirpath, _, filenames in os.walk(root):
|
|
for fn in filenames:
|
|
path = os.path.join(dirpath, fn)
|
|
if path in already_all:
|
|
continue
|
|
if not os.path.isfile(path) or os.path.islink(path):
|
|
continue
|
|
if require_executable:
|
|
try:
|
|
owner, group, mode = stat_triplet(path)
|
|
except OSError:
|
|
ul_excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
try:
|
|
if (int(mode, 8) & 0o111) == 0:
|
|
continue
|
|
except ValueError:
|
|
# If mode parsing fails, be conservative and skip.
|
|
continue
|
|
else:
|
|
try:
|
|
owner, group, mode = stat_triplet(path)
|
|
except OSError:
|
|
ul_excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
|
|
if path_filter.is_excluded(path):
|
|
ul_excluded.append(ExcludedFile(path=path, reason="user_excluded"))
|
|
continue
|
|
|
|
deny = policy.deny_reason(path)
|
|
if deny:
|
|
ul_excluded.append(ExcludedFile(path=path, reason=deny))
|
|
continue
|
|
|
|
src_rel = path.lstrip("/")
|
|
try:
|
|
_copy_into_bundle(bundle_dir, ul_role_name, path, src_rel)
|
|
except OSError:
|
|
ul_excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
|
|
ul_managed.append(
|
|
ManagedFile(
|
|
path=path,
|
|
src_rel=src_rel,
|
|
owner=owner,
|
|
group=group,
|
|
mode=mode,
|
|
reason=reason,
|
|
)
|
|
)
|
|
|
|
already_all.add(path)
|
|
scanned += 1
|
|
if scanned >= cap:
|
|
ul_notes.append(f"Reached file cap ({cap}) while scanning {root}.")
|
|
return
|
|
|
|
# /usr/local/etc: capture all non-binary regular files (filtered by IgnorePolicy)
|
|
_scan_usr_local_tree(
|
|
"/usr/local/etc",
|
|
require_executable=False,
|
|
cap=2000,
|
|
reason="usr_local_etc_custom",
|
|
)
|
|
|
|
# /usr/local/bin: capture executable scripts only (skip non-executable text)
|
|
_scan_usr_local_tree(
|
|
"/usr/local/bin",
|
|
require_executable=True,
|
|
cap=2000,
|
|
reason="usr_local_bin_script",
|
|
)
|
|
|
|
usr_local_custom_snapshot = UsrLocalCustomSnapshot(
|
|
role_name=ul_role_name,
|
|
managed_files=ul_managed,
|
|
excluded=ul_excluded,
|
|
notes=ul_notes,
|
|
)
|
|
|
|
# -------------------------
|
|
# extra_paths role (user-requested includes)
|
|
# -------------------------
|
|
extra_notes: List[str] = []
|
|
extra_excluded: List[ExcludedFile] = []
|
|
extra_managed: List[ManagedFile] = []
|
|
extra_role_name = "extra_paths"
|
|
|
|
include_specs = list(include_paths or [])
|
|
exclude_specs = list(exclude_paths or [])
|
|
|
|
if include_specs:
|
|
extra_notes.append("User include patterns:")
|
|
extra_notes.extend([f"- {p}" for p in include_specs])
|
|
if exclude_specs:
|
|
extra_notes.append("User exclude patterns:")
|
|
extra_notes.extend([f"- {p}" for p in exclude_specs])
|
|
|
|
included_files: List[str] = []
|
|
if include_specs:
|
|
files, inc_notes = expand_includes(
|
|
path_filter.iter_include_patterns(),
|
|
exclude=path_filter,
|
|
max_files=4000,
|
|
)
|
|
included_files = files
|
|
extra_notes.extend(inc_notes)
|
|
|
|
for path in included_files:
|
|
if path in already_all:
|
|
continue
|
|
|
|
if path_filter.is_excluded(path):
|
|
extra_excluded.append(ExcludedFile(path=path, reason="user_excluded"))
|
|
continue
|
|
|
|
deny = policy.deny_reason(path)
|
|
if deny:
|
|
extra_excluded.append(ExcludedFile(path=path, reason=deny))
|
|
continue
|
|
|
|
try:
|
|
owner, group, mode = stat_triplet(path)
|
|
except OSError:
|
|
extra_excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
|
|
src_rel = path.lstrip("/")
|
|
try:
|
|
_copy_into_bundle(bundle_dir, extra_role_name, path, src_rel)
|
|
except OSError:
|
|
extra_excluded.append(ExcludedFile(path=path, reason="unreadable"))
|
|
continue
|
|
|
|
extra_managed.append(
|
|
ManagedFile(
|
|
path=path,
|
|
src_rel=src_rel,
|
|
owner=owner,
|
|
group=group,
|
|
mode=mode,
|
|
reason="user_include",
|
|
)
|
|
)
|
|
already_all.add(path)
|
|
|
|
extra_paths_snapshot = ExtraPathsSnapshot(
|
|
role_name=extra_role_name,
|
|
include_patterns=include_specs,
|
|
exclude_patterns=exclude_specs,
|
|
managed_files=extra_managed,
|
|
excluded=extra_excluded,
|
|
notes=extra_notes,
|
|
)
|
|
|
|
state = {
|
|
"host": {"hostname": os.uname().nodename, "os": "debian"},
|
|
"users": asdict(users_snapshot),
|
|
"services": [asdict(s) for s in service_snaps],
|
|
"manual_packages": manual_pkgs,
|
|
"manual_packages_skipped": manual_pkgs_skipped,
|
|
"package_roles": [asdict(p) for p in pkg_snaps],
|
|
"etc_custom": asdict(etc_custom_snapshot),
|
|
"usr_local_custom": asdict(usr_local_custom_snapshot),
|
|
"extra_paths": asdict(extra_paths_snapshot),
|
|
}
|
|
|
|
state_path = os.path.join(bundle_dir, "state.json")
|
|
with open(state_path, "w", encoding="utf-8") as f:
|
|
json.dump(state, f, indent=2, sort_keys=True)
|
|
return state_path
|