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# gemato: Test utility functions
# (c) 2017-2023 Michał Górny
# Licensed under the terms of 2-clause BSD license
import errno
import functools
import os
import os.path
import random
import stat
import threading
import pytest
from http.server import HTTPServer, BaseHTTPRequestHandler
from urllib.parse import urlparse, parse_qs
def disallow_writes(path):
"""Mark path non-writable, recursively"""
for dirpath, dirs, files in os.walk(path, topdown=False):
for f in files + dirs:
st = os.lstat(os.path.join(dirpath, f))
if not stat.S_ISLNK(st.st_mode):
os.chmod(os.path.join(dirpath, f),
st.st_mode & ~0o222)
os.chmod(path, 0o555)
class HKPServerRequestHandler(BaseHTTPRequestHandler):
def __init__(self, keys, *args, **kwargs):
self.keys = keys
BaseHTTPRequestHandler.__init__(self, *args, **kwargs)
def log_message(self, *args, **kwargs):
pass
def do_GET(self):
try:
parsed = urlparse(self.path)
assert parsed.path == '/pks/lookup'
qs = parse_qs(parsed.query)
assert qs.get('op') == ['get']
assert len(qs.get('search', [])) == 1
key = qs['search'][0]
assert key.startswith('0x')
key = key[2:]
except AssertionError:
self.send_error(400, "Bad request")
return
if key not in self.keys:
self.send_error(404, "Not found")
return
self.send_response(200, "OK")
self.send_header("Content-type", "application/pgp-keys")
self.end_headers()
# note: technically we should be using ASCII armor here
# but GnuPG seems happy with the binary form too
self.wfile.write(self.keys[key])
self.wfile.flush()
class HKPServer:
def __init__(self):
self.keys = {}
self.addr = None
def start(self):
# try 10 randomly selected ports before giving up
for port in random.sample(range(1024, 32768), 10):
try:
self.server = HTTPServer(
('127.0.0.1', port),
functools.partial(HKPServerRequestHandler, self.keys))
except OSError as e:
if e.errno != errno.EADDRINUSE:
pytest.skip(
f'Unable to bind the HKP server: {e}')
else:
break
else:
pytest.skip('Unable to find a free port for HKP server')
self.addr = f'hkp://127.0.0.1:{port}'
self.thread = threading.Thread(target=self.server.serve_forever)
self.thread.start()
def stop(self):
assert self.addr is not None
self.server.shutdown()
self.server.server_close()
self.thread.join()
self.addr = None
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