python - Suds over https with cert

Question

I have soap service under Apache with ssl, suds works greate without ssl.
I have client certificate (my.crt and user.p12 files).
How I need to configure suds client ot make it work with service over https?

without certs i see

urllib2.URLError: <urlopen error [Errno 1] _ssl.c:499: error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure>

Answer 1

It sounds like you want to authenticate using a client certificate, not a server certificate as was stated in some of the comments. I had the same issue and was able to write a custom transport for SUDS. Here's the code that works for me.

You'll need your certificates in PEM format for this to work; OpenSSL can easily perform this conversion, though I don't remember the exact syntax.

import urllib2, httplib, socket
from suds.client import Client
from suds.transport.http import HttpTransport, Reply, TransportError

class HTTPSClientAuthHandler(urllib2.HTTPSHandler):
    def __init__(self, key, cert):
        urllib2.HTTPSHandler.__init__(self)
        self.key = key
        self.cert = cert

    def https_open(self, req):
        #Rather than pass in a reference to a connection class, we pass in
        # a reference to a function which, for all intents and purposes,
        # will behave as a constructor
        return self.do_open(self.getConnection, req)

    def getConnection(self, host, timeout=300):
        return httplib.HTTPSConnection(host,
                                       key_file=self.key,
                                       cert_file=self.cert)

class HTTPSClientCertTransport(HttpTransport):
    def __init__(self, key, cert, *args, **kwargs):
        HttpTransport.__init__(self, *args, **kwargs)
        self.key = key
        self.cert = cert

    def u2open(self, u2request):
        """
        Open a connection.
        @param u2request: A urllib2 request.
        @type u2request: urllib2.Requet.
        @return: The opened file-like urllib2 object.
        @rtype: fp
        """
        tm = self.options.timeout
        url = urllib2.build_opener(HTTPSClientAuthHandler(self.key, self.cert))
        if self.u2ver() < 2.6:
            socket.setdefaulttimeout(tm)
            return url.open(u2request)
        else:
            return url.open(u2request, timeout=tm)

# These lines enable debug logging; remove them once everything works.
import logging
logging.basicConfig(level=logging.INFO)
logging.getLogger('suds.client').setLevel(logging.DEBUG)
logging.getLogger('suds.transport').setLevel(logging.DEBUG)

c = Client('https://YOUR_URL_HERE',
    transport = HTTPSClientCertTransport('PRIVATE_KEY.pem',
                                         'CERTIFICATE_CHAIN.pem'))
print c