91 lines
3.1 KiB
Python
91 lines
3.1 KiB
Python
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc.,
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# 59 Temple Place, Suite 330,
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# Boston, MA 02111-1307 USA
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# This file is part of urlgrabber, a high-level cross-protocol url-grabber
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import httplib
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import urllib2
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try:
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from M2Crypto import SSL
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from M2Crypto import httpslib
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from M2Crypto import m2urllib2
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SSL.Connection.clientPostConnectionCheck = None
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have_m2crypto = True
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except ImportError:
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have_m2crypto = False
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DEBUG = None
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if have_m2crypto:
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class M2SSLFactory:
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def __init__(self, ssl_ca_cert, ssl_context):
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self.ssl_context = self._get_ssl_context(ssl_ca_cert, ssl_context)
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def _get_ssl_context(self, ssl_ca_cert, ssl_context):
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"""
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Create an ssl context using the CA cert file or ssl context.
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The CA cert is used first if it was passed as an option. If not,
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then the supplied ssl context is used. If no ssl context was supplied,
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None is returned.
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"""
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if ssl_ca_cert:
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context = SSL.Context()
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context.load_verify_locations(ssl_ca_cert)
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context.set_verify(SSL.verify_none, -1)
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return context
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else:
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return ssl_context
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def create_https_connection(self, host, response_class = None):
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connection = httplib.HTTPSConnection(host, self.ssl_context)
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if response_class:
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connection.response_class = response_class
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return connection
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def create_opener(self, *handlers):
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return m2urllib2.build_opener(self.ssl_context, *handlers)
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class SSLFactory:
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def create_https_connection(self, host, response_class = None):
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connection = httplib.HTTPSConnection(host)
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if response_class:
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connection.response_class = response_class
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return connection
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def create_opener(self, *handlers):
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return urllib2.build_opener(*handlers)
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def get_factory(ssl_ca_cert = None, ssl_context = None):
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""" Return an SSLFactory, based on if M2Crypto is available. """
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if have_m2crypto:
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return M2SSLFactory(ssl_ca_cert, ssl_context)
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else:
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# Log here if someone provides the args but we don't use them.
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if ssl_ca_cert or ssl_context:
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if DEBUG:
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DEBUG.warning("SSL arguments supplied, but M2Crypto is not available. "
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"Using Python SSL.")
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return SSLFactory()
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