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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 | """Validate reusable-image references, frozen inputs and closed context archives offline."""
import argparse
import json
from pathlib import Path
import re
from common import ROOT,contained,sha256
from materialize_agent_context import archive_stream, current_context, verify_manifest
def check(root,reference):
path=contained(root,reference['path'])
if path.is_symlink() or not path.is_file() or path.stat().st_size!=reference['bytes'] or sha256(path)!=reference['sha256']:
raise ValueError('Artifact reference mismatch: '+reference['path'])
return path
def validate(root):
rows=json.loads((root/'data/reusable-agent-images.json').read_text())['instances']
ids=[row['instance_id'] for row in rows]
if not rows or len(ids)!=len(set(ids)):raise ValueError('Empty/duplicate image index')
for row in rows:
image_path=check(root,row['image']);image=json.loads(image_path.read_text());folder=image_path.parent
if image['instance_id']!=row['instance_id'] or image['platform']!='linux/amd64' or image['model_independent'] is not True:
raise ValueError('Image identity/platform differs')
for name in ['registry_digest','amd64_manifest_digest','config_digest']:
if not re.fullmatch(r'sha256:[0-9a-f]{64}',image[name]):raise ValueError('Mutable/invalid image digest')
if image['image_ref']!=image['tag'].split(':',1)[0]+'@'+image['registry_digest']:raise ValueError('Image reference differs')
task_root=contained(root/'instances',row['instance_id']);task=json.loads((task_root/'task.json').read_text())
if sha256(task_root/'task.json')!=image['task_sha256'] or sha256(task_root/task['evaluation']['path'])!=image['contract_sha256']:
raise ValueError('Frozen task/contract hash differs')
source=json.loads(check(folder,image['source_manifest']).read_text())
actual={r['key']:(r['repo'],r['base_commit'],r['path']) for r in source['repositories']}
expected={r['key']:(r['repo'],r['base_commit'],r['container_path']) for r in task['repositories']}
if actual!=expected:raise ValueError('Agent source manifest differs from task')
check(folder,image['dockerfile'])
context_path,recipe=current_context(root,row['instance_id']);context=json.loads(context_path.read_text())
with archive_stream(context_path.parent,context['archive']) as stream:
if stream.read(2)!=b'\x1f\x8b':raise ValueError('Invalid context gzip header')
verify_manifest(context_path)
return {'state':'VERIFIED','reusable_images':len(rows),'instance_ids':ids,'runtime_or_model_calls':0}
if __name__=='__main__':
parser=argparse.ArgumentParser(description=__doc__);parser.add_argument('--root',type=Path,default=ROOT)
print(json.dumps(validate(parser.parse_args().root.resolve()),sort_keys=True))
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