Support for SSL in wsgi.Server

SSL are entirely optional. Support for SSL as well using code from glance. We
have some new options for configuring the SSL support. There are tests for
accessing a sample app w/o ipv6 or ssl, one with just ssl and one with
ipv6 and ssl

DocImpact

Change-Id: I9aa1db6c9563868bf68ced7c4311daa870216ced
This commit is contained in:
Davanum Srinivas 2013-01-12 16:16:19 -05:00
parent b8fca650b4
commit 24d961023f
5 changed files with 299 additions and 20 deletions

View File

@ -19,16 +19,24 @@
"""Unit tests for `cinder.wsgi`."""
import os.path
import ssl
import tempfile
import unittest
import urllib2
import webob
import webob.dec
from cinder.api.middleware import fault
from cinder import exception
from cinder.openstack.common import cfg
from cinder import test
import cinder.wsgi
CONF = cfg.CONF
TEST_VAR_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__),
'var'))
class TestLoaderNothingExists(test.TestCase):
"""Loader tests where os.path.exists always returns False."""
@ -103,6 +111,68 @@ class TestWSGIServer(unittest.TestCase):
server.stop()
server.wait()
def test_app(self):
greetings = 'Hello, World!!!'
def hello_world(env, start_response):
if env['PATH_INFO'] != '/':
start_response('404 Not Found',
[('Content-Type', 'text/plain')])
return ['Not Found\r\n']
start_response('200 OK', [('Content-Type', 'text/plain')])
return [greetings]
server = cinder.wsgi.Server("test_app", hello_world)
server.start()
response = urllib2.urlopen('http://127.0.0.1:%d/' % server.port)
self.assertEquals(greetings, response.read())
server.stop()
def test_app_using_ssl(self):
CONF.set_default("ssl_cert_file",
os.path.join(TEST_VAR_DIR, 'certificate.crt'))
CONF.set_default("ssl_key_file",
os.path.join(TEST_VAR_DIR, 'privatekey.key'))
greetings = 'Hello, World!!!'
@webob.dec.wsgify
def hello_world(req):
return greetings
server = cinder.wsgi.Server("test_app", hello_world)
server.start()
response = urllib2.urlopen('https://127.0.0.1:%d/' % server.port)
self.assertEquals(greetings, response.read())
server.stop()
def test_app_using_ipv6_and_ssl(self):
CONF.set_default("ssl_cert_file",
os.path.join(TEST_VAR_DIR, 'certificate.crt'))
CONF.set_default("ssl_key_file",
os.path.join(TEST_VAR_DIR, 'privatekey.key'))
greetings = 'Hello, World!!!'
@webob.dec.wsgify
def hello_world(req):
return greetings
server = cinder.wsgi.Server("test_app",
hello_world,
host="::1",
port=0)
server.start()
response = urllib2.urlopen('https://[::1]:%d/' % server.port)
self.assertEquals(greetings, response.read())
server.stop()
class ExceptionTest(test.TestCase):

35
cinder/tests/var/ca.crt Normal file
View File

@ -0,0 +1,35 @@
-----BEGIN CERTIFICATE-----
MIIGDDCCA/SgAwIBAgIJAPSvwQYk4qI4MA0GCSqGSIb3DQEBBQUAMGExCzAJBgNV
BAYTAkFVMRMwEQYDVQQIEwpTb21lLVN0YXRlMRUwEwYDVQQKEwxPcGVuc3RhY2sg
Q0ExEjAQBgNVBAsTCUdsYW5jZSBDQTESMBAGA1UEAxMJR2xhbmNlIENBMB4XDTEy
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WoRMgEwjGJWqzhJZUYpUAQ==
-----END CERTIFICATE-----

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@ -0,0 +1,30 @@
-----BEGIN CERTIFICATE-----
MIIFLjCCAxYCAQEwDQYJKoZIhvcNAQEFBQAwYTELMAkGA1UEBhMCQVUxEzARBgNV
BAgTClNvbWUtU3RhdGUxFTATBgNVBAoTDE9wZW5zdGFjayBDQTESMBAGA1UECxMJ
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hYXOVnG3pS+PjVby7ThT3gvFHSocguOsxClx1epdUJAmJUbmM7NmOp5WVBVtMtC2
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YfTLnrjs7Hj6ThMGcEnfvc46dWK3dz0RjsQzUxugPuEkLA==
-----END CERTIFICATE-----

View File

@ -0,0 +1,51 @@
-----BEGIN RSA PRIVATE KEY-----
MIIJKAIBAAKCAgEA16VJEDeqbmr6PoM96NSuJK1XT5dZuzYzSQ8g//mR9BBjXBDe
4moNajxOybI6hjzWbECtXTKF20s/jkovarzXiZwXH8FMeakwLcMgG/QMRpMLjGny
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pcMGM6gIkwb+ocUqeDGdnTV2viszorQu2W1dqrINGrtMI3xP6EkNzb7L1K/Jzpn7
rSU7x0QMGwtb+Bv7bgLDuztMNtLtgd7vqRtOpufq5xKqfqwfYZrpEWE34BBUUbFS
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H/+GnffE5Ln0fTYbH8nMRnqm65kzBZWfE05Zj/NoqIXpCgjr6MhLkyFi9vsCAwEA
AQKCAgAA96baQcWr9SLmQOR4NOwLEhQAMWefpWCZhU3amB4FgEVR1mmJjnw868RW
t0v36jH0Dl44us9K6o2Ab+jCi9JTtbWM2Osk6JNkwSlVtsSPVH2KxbbmTTExH50N
sYE3tPj12rlB7isXpRrOzlRwzWZmJBHOtrFlAsdKFYCQc03vdXlKGkBv1BuSXYP/
8W5ltSYXMspxehkOZvhaIejbFREMPbzDvGlDER1a7Q320qQ7kUr7ISvbY1XJUzj1
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juTykzPkCwZn8AyR+avC3mkrtJyM3IigcYOu4/UoaRDFa0xvCC1EfumpnKXIpHag
miSQZf2sVbgqb3/LWvHIg/ceOP9oGJve87/HVfQtBoLaIe5RXCWkqB7mcI/exvTS
8ShaW6v2Fe5Bzdvawj7sbsVYRWe93Aq2tmIgSX320D2RVepb6mjD4nr0IUaM3Yed
TFT7e2ikWXyDLLgVkDTU4Qe8fr3ZKGfanCIDzvgNw6H1gRi+2WQgOmjilMQ=
-----END RSA PRIVATE KEY-----

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@ -19,8 +19,12 @@
"""Utility methods for working with WSGI servers."""
import errno
import os
import socket
import ssl
import sys
import time
import eventlet
import eventlet.wsgi
@ -32,9 +36,34 @@ import webob.exc
from cinder import exception
from cinder import flags
from cinder.openstack.common import cfg
from cinder.openstack.common import log as logging
from cinder import utils
socket_opts = [
cfg.IntOpt('backlog',
default=4096,
help="Number of backlog requests to configure the socket with"),
cfg.IntOpt('tcp_keepidle',
default=600,
help="Sets the value of TCP_KEEPIDLE in seconds for each "
"server socket. Not supported on OS X."),
cfg.StrOpt('ssl_ca_file',
default=None,
help="CA certificate file to use to verify "
"connecting clients"),
cfg.StrOpt('ssl_cert_file',
default=None,
help="Certificate file to use when starting "
"the server securely"),
cfg.StrOpt('ssl_key_file',
default=None,
help="Private key file to use when starting "
"the server securely"),
]
CONF = cfg.CONF
CONF.register_opts(socket_opts)
FLAGS = flags.FLAGS
LOG = logging.getLogger(__name__)
@ -68,6 +97,84 @@ class Server(object):
self._logger = logging.getLogger("eventlet.wsgi.server")
self._wsgi_logger = logging.WritableLogger(self._logger)
def _get_socket(self, host, port, backlog):
bind_addr = (host, port)
# TODO(dims): eventlet's green dns/socket module does not actually
# support IPv6 in getaddrinfo(). We need to get around this in the
# future or monitor upstream for a fix
try:
info = socket.getaddrinfo(bind_addr[0],
bind_addr[1],
socket.AF_UNSPEC,
socket.SOCK_STREAM)[0]
family = info[0]
bind_addr = info[-1]
except Exception:
family = socket.AF_INET
cert_file = CONF.ssl_cert_file
key_file = CONF.ssl_key_file
ca_file = CONF.ssl_ca_file
use_ssl = cert_file or key_file
if cert_file and not os.path.exists(cert_file):
raise RuntimeError(_("Unable to find cert_file : %s") % cert_file)
if ca_file and not os.path.exists(ca_file):
raise RuntimeError(_("Unable to find ca_file : %s") % ca_file)
if key_file and not os.path.exists(key_file):
raise RuntimeError(_("Unable to find key_file : %s") % key_file)
if use_ssl and (not cert_file or not key_file):
raise RuntimeError(_("When running server in SSL mode, you must "
"specify both a cert_file and key_file "
"option value in your configuration file"))
def wrap_ssl(sock):
ssl_kwargs = {
'server_side': True,
'certfile': cert_file,
'keyfile': key_file,
'cert_reqs': ssl.CERT_NONE,
}
if CONF.ssl_ca_file:
ssl_kwargs['ca_certs'] = ca_file
ssl_kwargs['cert_reqs'] = ssl.CERT_REQUIRED
return ssl.wrap_socket(sock, **ssl_kwargs)
sock = None
retry_until = time.time() + 30
while not sock and time.time() < retry_until:
try:
sock = eventlet.listen(bind_addr,
backlog=backlog,
family=family)
if use_ssl:
sock = wrap_ssl(sock)
except socket.error, err:
if err.args[0] != errno.EADDRINUSE:
raise
eventlet.sleep(0.1)
if not sock:
raise RuntimeError(_("Could not bind to %(host)s:%(port)s "
"after trying for 30 seconds") %
{'host': host, 'port': port})
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
# sockets can hang around forever without keepalive
sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
# This option isn't available in the OS X version of eventlet
if hasattr(socket, 'TCP_KEEPIDLE'):
sock.setsockopt(socket.IPPROTO_TCP,
socket.TCP_KEEPIDLE,
CONF.tcp_keepidle)
return sock
def _start(self):
"""Run the blocking eventlet WSGI server.
@ -92,34 +199,20 @@ class Server(object):
raise exception.InvalidInput(
reason='The backlog must be more than 1')
bind_addr = (self._host, self._port)
# TODO(dims): eventlet's green dns/socket module does not actually
# support IPv6 in getaddrinfo(). We need to get around this in the
# future or monitor upstream for a fix
try:
info = socket.getaddrinfo(bind_addr[0],
bind_addr[1],
socket.AF_UNSPEC,
socket.SOCK_STREAM)[0]
family = info[0]
bind_addr = info[-1]
except Exception:
family = socket.AF_INET
self._socket = eventlet.listen(bind_addr,
family,
backlog=backlog)
self._socket = self._get_socket(self._host,
self._port,
backlog=backlog)
self._server = eventlet.spawn(self._start)
(self._host, self._port) = self._socket.getsockname()[0:2]
LOG.info(_("Started %(name)s on %(_host)s:%(_port)s") % self.__dict__)
@property
def host(self):
return self._socket.getsockname()[0] if self._socket else self._host
return self._host
@property
def port(self):
return self._socket.getsockname()[1] if self._socket else self._port
return self._port
def stop(self):
"""Stop this server.