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Direktori : /proc/self/root/opt/imunify360/venv/lib/python3.11/site-packages/restore_infected/ |
Current File : //proc/self/root/opt/imunify360/venv/lib/python3.11/site-packages/restore_infected/restore.py |
import asyncio import functools import logging import os from tempfile import TemporaryDirectory from . import helpers from .backup_backends import plesk from .backup_backends_lib import FtpBackupBase from .config import Flags from .safe_fileops import safe_move from .scan import scan RESTORE_DIR_NAME = '.restore-infected' RESTORE_DIR = os.path.expanduser(os.path.join('~', RESTORE_DIR_NAME)) logger = logging.getLogger(__name__) class FileData: def __init__(self, filename): self.filename = os.path.abspath(filename) if os.path.exists(self.filename): stat = os.stat(self.filename) self.size = stat.st_size self.mtime = helpers.DateTime.fromtimestamp(stat.st_mtime) else: self.size = None self.mtime = None def __eq__(self, other): return (self.size, self.mtime, self.filename) == ( other.size, other.mtime, other.filename, ) def __repr__(self): return '<{0}({1})>'.format(self.__class__.__name__, self.filename) class InfectedList: def __init__(self, files, restore_dir, scan_func): self.files = [FileData(f) for f in files] self.restore_dir = restore_dir self.scan_func = scan_func def __bool__(self): return bool(self.files) def __iter__(self): return iter(self.files) def check(self, backup, check_list, **kw): """ Return list of cured files. This files are removed from InfectedList """ check_map = backup.restore(check_list, self.restore_dir, **kw) scan_list = check_map.keys() still_infected = self.scan_func(scan_list) return self._build_cured_list(check_map, scan_list, still_infected) async def async_check(self, backup, check_list, **kw): """ Return list of cured files. This files are removed from InfectedList """ loop = asyncio.get_event_loop() check_map = await loop.run_in_executor( None, functools.partial( backup.restore, check_list, self.restore_dir, **kw ), ) scan_list = check_map.keys() still_infected = await self.scan_func(scan_list) return self._build_cured_list(check_map, scan_list, still_infected) def _build_cured_list(self, check_map, scan_list, still_infected): cured = set(scan_list) - set(still_infected) cured_list = [] for src in cured: dst = check_map[src] try: self.files.remove(FileData(dst)) except ValueError: logger.warning( 'Skipping restoration of a changed file %s', dst ) self.files = [f for f in self.files if f.filename != dst] else: cured_list.append((src, dst)) return cured_list def prep_restore_dir(tmp_dir=None): restore_dir = RESTORE_DIR try: if tmp_dir: restore_dir = os.path.join(tmp_dir, RESTORE_DIR_NAME) os.makedirs(restore_dir, exist_ok=True) except FileExistsError as e: message = os.linesep.join([ str(e), '', 'There is a file in place of {}'.format(restore_dir), 'Most probably it is done to prevent `restore` to be run', 'Remove this file to be able to restore again' ]) raise FileExistsError(message) from e else: return TemporaryDirectory(dir=restore_dir) def restore_infected( backend, files, until=None, scan_func=scan, pre_restore_hook=..., tmp_dir=None, **kw, ): restore_dir = prep_restore_dir(tmp_dir=tmp_dir) infected_list = InfectedList(files, restore_dir.name, scan_func) args = backend.pre_backups(files, until) args = args or {} success = [] failed = [] for backup in backend.backups( until=until, **args, async_=False, tmp_dir=tmp_dir ): if Flags.DisableFtpBackups and isinstance(backup, FtpBackupBase): continue check_list = [] for infected_file in infected_list: try: backup_file = backup.file_data(infected_file.filename) except FileNotFoundError: continue except EOFError: logger.warning( "Unexpected end of file reached during processing backup: " "{}. Skipping...".format(backup) ) if backend is plesk: logger.warning( "Plesk multivolume backups currently are not supported" ) continue if infected_file == backup_file: continue check_list.append(backup_file) if check_list: restore_list = infected_list.check(backup, check_list, **kw) for src, dst in restore_list: try: safe_move(src, dst) except PermissionError: failed.append(dst) else: success.append(dst) backup.close() if not infected_list: break failed.extend([f.filename for f in infected_list]) backend.cleanup() return success, failed async def async_restore_infected( backend, files, until=None, scan_func=scan, pre_restore_hook=..., tmp_dir=None, **kw, ): restore_dir = prep_restore_dir(tmp_dir=tmp_dir) infected_list = InfectedList(files, restore_dir.name, scan_func) args = await backend.pre_backups(files, until, async_=True) args = args or {} success = [] failed = [] loop = asyncio.get_event_loop() for backup in await backend.backups( until=until, **args, async_=True, tmp_dir=tmp_dir ): if Flags.DisableFtpBackups and isinstance(backup, FtpBackupBase): continue check_list = [] for infected_file in infected_list: try: backup_file = await loop.run_in_executor( None, functools.partial( backup.file_data, infected_file.filename ), ) except FileNotFoundError: continue if infected_file == backup_file: continue check_list.append(backup_file) if check_list: restore_list = await infected_list.async_check( backup, check_list, **kw ) for src, dst in restore_list: try: safe_move(src, dst) except PermissionError: failed.append(dst) else: success.append(dst) backup.close() if not infected_list: break failed.extend([f.filename for f in infected_list]) await backend.cleanup() return success, failed