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#!/usr/bin/env python
"""
Dummy server used for unit testing.
"""
from __future__ import print_function
import logging
import os
import sys
import threading
import socket
import warnings
import ssl
from datetime import datetime
from urllib3.exceptions import HTTPWarning
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import serialization
import tornado.httpserver
import tornado.ioloop
import tornado.netutil
import tornado.web
import trustme
log = logging.getLogger(__name__)
CERTS_PATH = os.path.join(os.path.dirname(__file__), "certs")
DEFAULT_CERTS = {
"certfile": os.path.join(CERTS_PATH, "server.crt"),
"keyfile": os.path.join(CERTS_PATH, "server.key"),
"cert_reqs": ssl.CERT_OPTIONAL,
"ca_certs": os.path.join(CERTS_PATH, "cacert.pem"),
}
DEFAULT_CA = os.path.join(CERTS_PATH, "cacert.pem")
DEFAULT_CA_KEY = os.path.join(CERTS_PATH, "cacert.key")
def _resolves_to_ipv6(host):
""" Returns True if the system resolves host to an IPv6 address by default. """
resolves_to_ipv6 = False
try:
for res in socket.getaddrinfo(host, None, socket.AF_UNSPEC):
af, _, _, _, _ = res
if af == socket.AF_INET6:
resolves_to_ipv6 = True
except socket.gaierror:
pass
return resolves_to_ipv6
def _has_ipv6(host):
""" Returns True if the system can bind an IPv6 address. """
sock = None
has_ipv6 = False
if socket.has_ipv6:
# has_ipv6 returns true if cPython was compiled with IPv6 support.
# It does not tell us if the system has IPv6 support enabled. To
# determine that we must bind to an IPv6 address.
# https://github.com/urllib3/urllib3/pull/611
# https://bugs.python.org/issue658327
try:
sock = socket.socket(socket.AF_INET6)
sock.bind((host, 0))
has_ipv6 = _resolves_to_ipv6("localhost")
except Exception:
pass
if sock:
sock.close()
return has_ipv6
# Some systems may have IPv6 support but DNS may not be configured
# properly. We can not count that localhost will resolve to ::1 on all
# systems. See https://github.com/urllib3/urllib3/pull/611 and
# https://bugs.python.org/issue18792
HAS_IPV6_AND_DNS = _has_ipv6("localhost")
HAS_IPV6 = _has_ipv6("::1")
# Different types of servers we have:
class NoIPv6Warning(HTTPWarning):
"IPv6 is not available"
pass
class SocketServerThread(threading.Thread):
"""
:param socket_handler: Callable which receives a socket argument for one
request.
:param ready_event: Event which gets set when the socket handler is
ready to receive requests.
"""
USE_IPV6 = HAS_IPV6_AND_DNS
def __init__(self, socket_handler, host="localhost", port=8081, ready_event=None):
threading.Thread.__init__(self)
self.daemon = True
self.socket_handler = socket_handler
self.host = host
self.ready_event = ready_event
def _start_server(self):
if self.USE_IPV6:
sock = socket.socket(socket.AF_INET6)
else:
warnings.warn("No IPv6 support. Falling back to IPv4.", NoIPv6Warning)
sock = socket.socket(socket.AF_INET)
if sys.platform != "win32":
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind((self.host, 0))
self.port = sock.getsockname()[1]
# Once listen() returns, the server socket is ready
sock.listen(1)
if self.ready_event:
self.ready_event.set()
self.socket_handler(sock)
sock.close()
def run(self):
self.server = self._start_server()
def run_tornado_app(app, io_loop, certs, scheme, host):
assert io_loop == tornado.ioloop.IOLoop.current()
# We can't use fromtimestamp(0) because of CPython issue 29097, so we'll
# just construct the datetime object directly.
app.last_req = datetime(1970, 1, 1)
if scheme == "https":
http_server = tornado.httpserver.HTTPServer(app, ssl_options=certs)
else:
http_server = tornado.httpserver.HTTPServer(app)
sockets = tornado.netutil.bind_sockets(None, address=host)
port = sockets[0].getsockname()[1]
http_server.add_sockets(sockets)
return http_server, port
def run_loop_in_thread(io_loop):
t = threading.Thread(target=io_loop.start)
t.start()
return t
def get_unreachable_address():
# reserved as per rfc2606
return ("something.invalid", 54321)
if __name__ == "__main__":
# For debugging dummyserver itself - python -m dummyserver.server
from .testcase import TestingApp
host = "127.0.0.1"
io_loop = tornado.ioloop.IOLoop.current()
app = tornado.web.Application([(r".*", TestingApp)])
server, port = run_tornado_app(app, io_loop, None, "http", host)
server_thread = run_loop_in_thread(io_loop)
print("Listening on http://{host}:{port}".format(host=host, port=port))
def encrypt_key_pem(private_key_pem, password):
private_key = serialization.load_pem_private_key(
private_key_pem.bytes(), password=None, backend=default_backend()
)
encrypted_key = private_key.private_bytes(
serialization.Encoding.PEM,
serialization.PrivateFormat.TraditionalOpenSSL,
serialization.BestAvailableEncryption(password),
)
return trustme.Blob(encrypted_key)
|
