M2Crypto: How to check server certificate?

[Hallvard B Furuseth]

Does anyone know how I check the server certificate with M2Crypto?
Currently a program I have inherited does this:

#!/local/bin/python2.2
import xmlrpclib
from M2Crypto.m2xmlr pclib import Server, SSL_Transport
svr = Server('http://my.machine.no:8 000',
SSL_Transport() , encoding='iso88 59-1')
# TODO: check server certificate
secret = svr.login('myus er', 'mypassword')

--
Hallvard

[Ng Pheng Siong]

According to Hallvard B Furuseth <h.b.furuseth(n ospam)@usit.uio (nospam).no>:

Does anyone know how I check the server certificate with M2Crypto?
Currently a program I have inherited does this:

#!/local/bin/python2.2
import xmlrpclib
from M2Crypto.m2xmlr pclib import Server, SSL_Transport
svr = Server('http://my.machine.no:8 000',
SSL_Transport() , encoding='iso88 59-1')
# TODO: check server certificate
secret = svr.login('myus er', 'mypassword')

Specify an SSL context:

from M2Crypto import SSL
from M2Crypto.m2xmlr pclib import Server, SSL_Transport

# Server is Zope-2.6.1 on ZServerSSL/0.12.
ctx = SSL.Context('ss lv3')
ctx.load_cert_c hain('client.pe m')
ctx.load_verify _locations('ca. pem')
ctx.set_verify( SSL.verify_peer , 10)
zs = Server('https://127.0.0.1:9443/', SSL_Transport(c tx))
print zs.propertyMap( )

My to-be-released ZServerSSL 0.12 does client certs, too, including mapping
from a subject DN to a Zope username. The above snippet was written to test
that.
--
Ng Pheng Siong <ng**@netmemeti c.com>

http://firewall.rulemaker.net -+- Manage Your Firewall Rulebase Changes
http://www.post1.com/home/ngps -+- Open Source Python Crypto & SSL

[Hallvard B Furuseth]

Ng Pheng Siong wrote:

According to Hallvard B Furuseth <h.b.furuseth(n ospam)@usit.uio (nospam).no>:

Does anyone know how I check the server certificate with M2Crypto?
Currently a program I have inherited does this:
Specify an SSL context:

Thank you.
from M2Crypto import SSL
from M2Crypto.m2xmlr pclib import Server, SSL_Transport

# Server is Zope-2.6.1 on ZServerSSL/0.12.
ctx = SSL.Context('ss lv3')
ctx.load_cert_c hain('client.pe m')
I think I can drop that when I have ca.pem...
ctx.load_verify _locations('ca. pem')
Should be load_verify_loc ation.

Heh. That failed - correctly - because our test CA certificate is
expired.
ctx.set_verify( SSL.verify_peer , 10)

What does 10 mean? I can see from the function declaration that it is
depth, but I don't know what depth is.

--
Hallvard