import io
import logging
from abc import ABC
from typing import List, Optional
import rpmfile
from credsweeper.credentials.candidate import Candidate
from credsweeper.deep_scanner.abstract_scanner import AbstractScanner
from credsweeper.file_handler.data_content_provider import DataContentProvider
from credsweeper.file_handler.file_path_extractor import FilePathExtractor
from credsweeper.utils.util import Util
logger = logging.getLogger(__name__)
[docs]
class RpmScanner(AbstractScanner, ABC):
"""Implements rpm scanning"""
[docs]
def data_scan(
self, #
data_provider: DataContentProvider, #
depth: int, #
recursive_limit_size: int) -> Optional[List[Candidate]]:
"""Extracts files one by one from the package type and launches recursive scan"""
try:
candidates = []
with rpmfile.open(fileobj=io.BytesIO(data_provider.data)) as rpm_file:
for member in rpm_file.getmembers():
# skip directory
if 0 != member.isdir:
continue
if FilePathExtractor.check_exclude_file(self.config, member.name):
continue
if 0 > recursive_limit_size - member.size:
logger.error(f"{member.filename}: size {member.size}"
f" is over limit {recursive_limit_size} depth:{depth}")
continue
rpm_content_provider = DataContentProvider(data=rpm_file.extractfile(member).read(),
file_path=data_provider.file_path,
file_type=Util.get_extension(member.name),
info=f"{data_provider.info}|RPM:{member.name}")
new_limit = recursive_limit_size - len(rpm_content_provider.data)
rpm_candidates = self.recursive_scan(rpm_content_provider, depth, new_limit)
candidates.extend(rpm_candidates)
return candidates
except Exception as rpm_exc:
logger.error(f"{data_provider.file_path}:{rpm_exc}")
return None