Datasets:
File size: 2,858 Bytes
0e239c6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | import hashlib
import io
import json
from pathlib import Path
import tarfile
import tempfile
import unittest
from materialize_agent_context import materialize
class MaterializeTests(unittest.TestCase):
def fixture(self, root, member='Dockerfile', payload=b'FROM scratch\n'):
root = Path(root)
archive = root / 'context.tar.gz'
with tarfile.open(archive, 'w:gz') as tar:
info = tarfile.TarInfo(member)
info.size = len(payload)
info.mode = 0o644
tar.addfile(info, io.BytesIO(payload))
data = archive.read_bytes()
record = {'archive': {'path': archive.name, 'sha256': hashlib.sha256(data).hexdigest(), 'bytes': len(data)},
'files': [{'path': member, 'sha256': hashlib.sha256(payload).hexdigest(), 'bytes': len(payload), 'mode': 0o644}]}
(root / 'context-manifest.json').write_text(json.dumps(record))
return root / 'context-manifest.json'
def test_exact_context_is_restored(self):
with tempfile.TemporaryDirectory() as temp:
record = self.fixture(temp)
out = Path(temp) / 'out'
materialize(record, out)
self.assertEqual((out / 'Dockerfile').read_bytes(), b'FROM scratch\n')
def test_tampered_archive_is_rejected_before_extraction(self):
with tempfile.TemporaryDirectory() as temp:
record = self.fixture(temp)
with (Path(temp) / 'context.tar.gz').open('ab') as stream:
stream.write(b'changed')
with self.assertRaises(ValueError):
materialize(record, Path(temp) / 'out')
self.assertFalse((Path(temp) / 'out').exists())
def test_traversal_member_is_rejected(self):
with tempfile.TemporaryDirectory() as temp:
record = self.fixture(temp, '../escape')
with self.assertRaises(ValueError):
materialize(record, Path(temp) / 'out')
self.assertFalse((Path(temp) / 'escape').exists())
def test_existing_output_is_preserved(self):
with tempfile.TemporaryDirectory() as temp:
record = self.fixture(temp)
out = Path(temp) / 'out'
out.mkdir()
(out / 'keep').write_text('preserve')
with self.assertRaises(FileExistsError):
materialize(record, out)
self.assertEqual((out / 'keep').read_text(), 'preserve')
def test_unlisted_member_is_rejected(self):
with tempfile.TemporaryDirectory() as temp:
record = self.fixture(temp)
data = json.loads(record.read_text())
data['files'] = []
record.write_text(json.dumps(data))
with self.assertRaises(ValueError):
materialize(record, Path(temp) / 'out')
if __name__ == '__main__':
unittest.main()
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