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#!/usr/bin/python
from __future__ import print_function
import base64
import hashlib
import json
import os
import sys
import time
if sys.version_info[0] >= 3:
from urllib.parse import parse_qs
import http.server as http_server
else:
from urlparse import parse_qs
import BaseHTTPServer as http_server
repositories = {}
icons = {}
def get_index():
results = []
for repo_name in sorted(repositories.keys()):
repo = repositories[repo_name]
results.append({
'Name': repo_name,
'Images': repo['images'],
'Lists': [],
})
return json.dumps({
'Registry': '/',
'Results': results
}, indent=4)
def cache_icon(data_uri):
prefix = 'data:image/png;base64,'
assert data_uri.startswith(prefix)
data = base64.b64decode(data_uri[len(prefix):])
h = hashlib.sha256()
h.update(data)
digest = h.hexdigest()
filename = digest + '.png'
icons[filename] = data
return '/icons/' + filename
serial = 0
server_start_time = int(time.time())
def get_etag():
return str(server_start_time) + '-' + str(serial)
def modified():
global serial
serial += 1
def parse_http_date(date):
parsed = parsedate(date)
if parsed is not None:
return timegm(parsed)
else:
return None
class RequestHandler(http_server.BaseHTTPRequestHandler):
def check_route(self, route):
parts = self.path.split('?', 1)
path = parts[0].split('/')
result = []
route_path = route.split('/')
print((route_path, path))
if len(route_path) != len(path):
return False
matches = {}
for i in range(1, len(route_path)):
if route_path[i][0] == '@':
matches[route_path[i][1:]] = path[i]
elif route_path[i] != path[i]:
return False
self.matches = matches
if len(parts) == 1:
self.query = {}
else:
self.query = parse_qs(parts[1], keep_blank_values=True)
return True
def do_GET(self):
response = 200
response_string = None
response_content_type = "application/octet-stream"
response_file = None
add_headers = {}
if self.check_route('/v2/@repo_name/blobs/@digest'):
repo_name = self.matches['repo_name']
digest = self.matches['digest']
response_file = repositories[repo_name]['blobs'][digest]
elif self.check_route('/v2/@repo_name/manifests/@ref'):
repo_name = self.matches['repo_name']
ref = self.matches['ref']
response_file = repositories[repo_name]['manifests'][ref]
elif self.check_route('/index/static') or self.check_route('/index/dynamic'):
etag = get_etag()
if self.headers.get("If-None-Match") == etag:
response = 304
else:
response_string = get_index()
add_headers['Etag'] = etag
elif self.check_route('/icons/@filename') :
response_string = icons[self.matches['filename']]
response_content_type = 'image/png'
else:
response = 404
self.send_response(response)
for k, v in add_headers.items():
self.send_header(k, v)
if response == 200:
self.send_header("Content-Type", response_content_type)
if response == 200 or response == 304:
self.send_header('Cache-Control', 'no-cache')
self.end_headers()
if response == 200:
if response_file:
with open(response_file, 'rb') as f:
response_string = f.read()
if isinstance(response_string, bytes):
self.wfile.write(response_string)
else:
self.wfile.write(response_string.encode('utf-8'))
def do_POST(self):
if self.check_route('/testing/@repo_name/@tag'):
repo_name = self.matches['repo_name']
tag = self.matches['tag']
d = self.query['d'][0]
detach_icons = 'detach-icons' in self.query
repo = repositories.setdefault(repo_name, {})
blobs = repo.setdefault('blobs', {})
manifests = repo.setdefault('manifests', {})
images = repo.setdefault('images', [])
with open(os.path.join(d, 'index.json')) as f:
index = json.load(f)
manifest_digest = index['manifests'][0]['digest']
manifest_path = os.path.join(d, 'blobs', *manifest_digest.split(':'))
manifests[manifest_digest] = manifest_path
manifests[tag] = manifest_path
with open(manifest_path) as f:
manifest = json.load(f)
config_digest = manifest['config']['digest']
config_path = os.path.join(d, 'blobs', *config_digest.split(':'))
with open(config_path) as f:
config = json.load(f)
for dig in os.listdir(os.path.join(d, 'blobs', 'sha256')):
digest = 'sha256:' + dig
path = os.path.join(d, 'blobs', 'sha256', dig)
if digest != manifest_digest:
blobs[digest] = path
if detach_icons:
for size in (64, 128):
annotation = 'org.freedesktop.appstream.icon-{}'.format(size)
icon = manifest['annotations'].get(annotation)
if icon:
path = cache_icon(icon)
manifest['annotations'][annotation] = path
image = {
"Tags": [tag],
"Digest": manifest_digest,
"MediaType": "application/vnd.oci.image.manifest.v1+json",
"OS": config['os'],
"Architecture": config['architecture'],
"Annotations": manifest['annotations'],
"Labels": {},
}
# Delete old versions
for i in images:
if tag in i['Tags']:
images.remove(i)
del manifests[i['Digest']]
images.append(image)
modified()
self.send_response(200)
self.end_headers()
return
else:
self.send_response(404)
self.end_headers()
return
def do_DELETE(self):
if self.check_route('/testing/@repo_name/@ref'):
repo_name = self.matches['repo_name']
ref = self.matches['ref']
repo = repositories.setdefault(repo_name, {})
blobs = repo.setdefault('blobs', {})
manifests = repo.setdefault('manifests', {})
images = repo.setdefault('images', [])
image = None
for i in images:
if i['Digest'] == ref or ref in i['Tags']:
image = i
break
assert image
images.remove(image)
del manifests[image['Digest']]
for t in image['Tags']:
del manifests[t]
modified()
self.send_response(200)
self.end_headers()
return
else:
self.send_response(404)
self.end_headers()
return
def test():
if sys.version_info[0] >= 3:
http_server.test(RequestHandler, port=0)
else:
http_server.test(RequestHandler)
if __name__ == '__main__':
test()
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