mirror of
https://github.com/lucaspalomodevelop/core.git
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913a5caae3
Neither OpenSSL base (/etc/ssl) nor ports (/usr/local/openssl) need the bundle file now that we use the directory trust store. The downside is that as soon as the bundle exists OpenSSL library will read both the directory and the bundle by default defeating the purpose of a single location and the directory being faster. Keep the fringe ca_root_nss location /usr/local/etc/ssl since that is still seeded by the package but controlled and topped up by the user configured authorities.
112 lines
4.9 KiB
Python
112 lines
4.9 KiB
Python
"""
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Copyright (c) 2024 Ad Schellevis <ad@opnsense.org>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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"""
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import os
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import requests
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import ssl
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from requests.adapters import HTTPAdapter
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from requests.packages.urllib3.util.ssl_ import create_urllib3_context
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from collections import OrderedDict
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from configparser import ConfigParser
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class IniDict(OrderedDict):
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def __setitem__(self, key, value):
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if isinstance(value, list) and key in self:
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self[key].extend(value)
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else:
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super().__setitem__(key, value)
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class PlatformTLSAdaptor(HTTPAdapter):
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ssl_context = None
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@classmethod
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def get_sslcontext(cls):
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if cls.ssl_context is None:
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openssl_conf = {
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'cipherstring' : None,
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'minprotocol': None,
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# XXX: Curves (very) limited supported
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'groups' : None,
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# XXX: not supported, but openssl.cfg settings do seem to apply here.
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'signaturealgorithms' : None,
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# XXX: TLS1.3 modifications not supported, openssl.cnf defaults should apply
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# https://docs.python.org/3/library/ssl.html#ssl.SSLContext.set_ciphers
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'ciphersuites' : None,
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}
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conf_file = '/usr/local/openssl/openssl.cnf'
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conf_section = 'system_default_sect'
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if os.path.isfile(conf_file):
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cnf = ConfigParser(strict=False, dict_type=IniDict)
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data = "[openssl]\n%s" % open(conf_file, 'r').read()
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cnf.read_string(data)
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if cnf.has_section(conf_section):
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for option in cnf.options(conf_section):
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if option in openssl_conf:
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openssl_conf[option] = cnf.get(conf_section, option)
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ctx_args = {}
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if openssl_conf['cipherstring']:
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ctx_args['ciphers'] = openssl_conf['cipherstring']
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cls.ssl_context = create_urllib3_context(**ctx_args)
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cls.ssl_context.load_verify_locations('/usr/local/etc/ssl/cert.pem')
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if openssl_conf['minprotocol']:
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for item in openssl_conf['minprotocol'].split("\n"):
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if item == 'TLSv1':
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cls.ssl_context.minimum_version = ssl.TLSVersion.TLSv1
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elif item == 'TLSv1.1':
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cls.ssl_context.minimum_version = ssl.TLSVersion.TLSv1_1
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elif item == 'TLSv1.2':
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cls.ssl_context.minimum_version = ssl.TLSVersion.TLSv1_2
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elif item == 'TLSv1.3':
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cls.ssl_context.minimum_version = ssl.TLSVersion.TLSv1_3
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if openssl_conf['groups']:
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# XXX: We can only select a single curve here instead of a group
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# although this is very flaky, we should choose one to prevent accepting ffdhe2048
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# which is enabled by default in openssl.
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cls.ssl_context.set_ecdh_curve(openssl_conf['groups'].split(':')[0])
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return cls.ssl_context
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def init_poolmanager(self, *args, **kwargs):
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kwargs['ssl_context'] = self.get_sslcontext()
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return super().init_poolmanager(*args, **kwargs)
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def proxy_manager_for(self, *args, **kwargs):
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kwargs['ssl_context'] = self.get_sslcontext()
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return super().proxy_manager_for(*args, **kwargs)
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class RequestsWrapper:
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def get(self, *args, **kwargs):
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s = requests.Session()
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s.mount('https://', PlatformTLSAdaptor())
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return s.get(*args, **kwargs)
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def post(self, *args, **kwargs):
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s = requests.Session()
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s.mount('https://', PlatformTLSAdaptor())
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return s.post(*args, **kwargs)
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