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https://github.com/Kozea/Radicale.git
synced 2025-04-03 21:27:36 +03:00
add support for ssl protocol and ciphersuite
This commit is contained in:
Peter Bieringer
parent
1d07d72946
commit
fb904320d2
4 changed files with 143 additions and 1 deletions
6
config
6
config
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@ -40,6 +40,12 @@
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# TCP traffic between Radicale and a reverse proxy
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#certificate_authority =
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# SSL protocol, secure configuration: ALL -SSLv3 -TLSv1 -TLSv1.1
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#protocol = (default)
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# SSL ciphersuite, secure configuration: DHE:ECDHE:-NULL:-SHA (see also "man openssl-ciphers")
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#ciphersuite = (default)
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[encoding]
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@ -141,6 +141,14 @@ DEFAULT_CONFIG_SCHEMA: types.CONFIG_SCHEMA = OrderedDict([
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"aliases": ("-s", "--ssl",),
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"opposite_aliases": ("-S", "--no-ssl",),
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"type": bool}),
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("protocol", {
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"value": "",
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"help": "SSL/TLS protocol (Apache SSLProtocol format)",
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"type": str}),
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("ciphersuite", {
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"value": "",
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"help": "SSL/TLS Cipher Suite (OpenSSL cipher list format)",
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"type": str}),
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("certificate", {
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"value": "/etc/ssl/radicale.cert.pem",
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"help": "set certificate file",
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@ -34,7 +34,7 @@ from typing import (Any, Callable, Dict, List, MutableMapping, Optional, Set,
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Tuple, Union)
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from urllib.parse import unquote
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from radicale import Application, config
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from radicale import Application, config, utils
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from radicale.log import logger
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COMPAT_EAI_ADDRFAMILY: int
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@ -167,6 +167,8 @@ class ParallelHTTPSServer(ParallelHTTPServer):
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certfile: str = self.configuration.get("server", "certificate")
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keyfile: str = self.configuration.get("server", "key")
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cafile: str = self.configuration.get("server", "certificate_authority")
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protocol: str = self.configuration.get("server", "protocol")
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ciphersuite: str = self.configuration.get("server", "ciphersuite")
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# Test if the files can be read
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for name, filename in [("certificate", certfile), ("key", keyfile),
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("certificate_authority", cafile)]:
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@ -184,6 +186,23 @@ class ParallelHTTPSServer(ParallelHTTPServer):
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e)) from e
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context = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH)
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context.load_cert_chain(certfile=certfile, keyfile=keyfile)
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if protocol:
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logger.info("SSL set explicit protocol: '%s'", protocol)
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context.options = utils.ssl_context_options_by_protocol(protocol, context.options)
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context.minimum_version = utils.ssl_context_minimum_version_by_options(context.options)
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else:
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logger.info("SSL default protocol active")
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logger.info("SSL minimum acceptable protocol: %s", context.minimum_version)
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logger.info("SSL accepted protocols: %s", ' '.join(utils.ssl_get_protocols(context)))
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if ciphersuite:
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logger.info("SSL set explicit ciphersuite: '%s'", ciphersuite)
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context.set_ciphers(ciphersuite)
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else:
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logger.info("SSL default ciphersuite active")
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cipherlist = []
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for entry in context.get_ciphers():
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cipherlist.append(entry["name"])
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logger.info("SSL accepted ciphers: %s", ' '.join(cipherlist))
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if cafile:
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context.load_verify_locations(cafile=cafile)
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context.verify_mode = ssl.CERT_REQUIRED
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@ -2,6 +2,7 @@
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# Copyright © 2014 Jean-Marc Martins
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# Copyright © 2012-2017 Guillaume Ayoub
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# Copyright © 2017-2018 Unrud <unrud@outlook.com>
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# Copyright © 2024-2024 Peter Bieringer <pb@bieringer.de>
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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@ -18,6 +19,7 @@
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from importlib import import_module, metadata
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from typing import Callable, Sequence, Type, TypeVar, Union
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import ssl
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from radicale import config
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from radicale.log import logger
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@ -47,3 +49,110 @@ def load_plugin(internal_types: Sequence[str], module_name: str,
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def package_version(name):
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return metadata.version(name)
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def ssl_context_options_by_protocol(protocol: str, ssl_context_options):
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logger.debug("SSL protocol string: '%s' and current SSL context options: '0x%x'", protocol, ssl_context_options)
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# disable any protocol by default
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logger.debug("SSL context options, disable ALL by default")
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ssl_context_options |= ssl.OP_NO_SSLv2
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ssl_context_options |= ssl.OP_NO_SSLv3
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ssl_context_options |= ssl.OP_NO_TLSv1
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ssl_context_options |= ssl.OP_NO_TLSv1_1
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ssl_context_options |= ssl.OP_NO_TLSv1_2
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ssl_context_options |= ssl.OP_NO_TLSv1_3
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logger.debug("SSL cleared SSL context options: '0x%x'", ssl_context_options)
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for entry in protocol.split():
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entry = entry.strip('+') # remove trailing '+'
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if entry == "ALL":
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logger.debug("SSL context options, enable ALL (some maybe not supported by underlying OpenSSL, SSLv2 not enabled at all)")
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ssl_context_options &= ~ssl.OP_NO_SSLv3
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ssl_context_options &= ~ssl.OP_NO_TLSv1
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ssl_context_options &= ~ssl.OP_NO_TLSv1_1
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ssl_context_options &= ~ssl.OP_NO_TLSv1_2
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ssl_context_options &= ~ssl.OP_NO_TLSv1_3
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elif entry == "SSLv2":
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logger.notice("SSL context options, ignore SSLv2 (totally insecure)")
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elif entry == "SSLv3":
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ssl_context_options &= ~ssl.OP_NO_SSLv3
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logger.debug("SSL context options, enable SSLv3 (maybe not supported by underlying OpenSSL)")
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elif entry == "TLSv1":
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ssl_context_options &= ~ssl.OP_NO_TLSv1
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logger.debug("SSL context options, enable TLSv1 (maybe not supported by underlying OpenSSL)")
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elif entry == "TLSv1.1":
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logger.debug("SSL context options, enable TLSv1.1 (maybe not supported by underlying OpenSSL)")
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ssl_context_options &= ~ssl.OP_NO_TLSv1_1
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elif entry == "TLSv1.2":
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logger.debug("SSL context options, enable TLSv1.2")
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ssl_context_options &= ~ssl.OP_NO_TLSv1_2
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elif entry == "TLSv1.3":
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logger.debug("SSL context options, enable TLSv1.3")
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ssl_context_options &= ~ssl.OP_NO_TLSv1_3
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elif entry == "-ALL":
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logger.debug("SSL context options, disable ALL")
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ssl_context_options |= ssl.OP_NO_SSLv2
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ssl_context_options |= ssl.OP_NO_SSLv3
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ssl_context_options |= ssl.OP_NO_TLSv1
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ssl_context_options |= ssl.OP_NO_TLSv1_1
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ssl_context_options |= ssl.OP_NO_TLSv1_2
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ssl_context_options |= ssl.OP_NO_TLSv1_3
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elif entry == "-SSLv2":
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ssl_context_options |= ssl.OP_NO_SSLv2
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logger.debug("SSL context options, disable SSLv2")
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elif entry == "-SSLv3":
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ssl_context_options |= ssl.OP_NO_SSLv3
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logger.debug("SSL context options, disable SSLv3")
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elif entry == "-TLSv1":
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logger.debug("SSL context options, disable TLSv1")
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ssl_context_options |= ssl.OP_NO_TLSv1
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elif entry == "-TLSv1.1":
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logger.debug("SSL context options, disable TLSv1.1")
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ssl_context_options |= ssl.OP_NO_TLSv1_1
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elif entry == "-TLSv1.2":
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logger.debug("SSL context options, disable TLSv1.2")
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ssl_context_options |= ssl.OP_NO_TLSv1_2
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elif entry == "-TLSv1.3":
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logger.debug("SSL context options, disable TLSv1.3")
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ssl_context_options |= ssl.OP_NO_TLSv1_3
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else:
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logger.error("SSL protocol string: '%s' contain unsupported entry: '%s'", protocol, entry)
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logger.debug("SSL resulting context options: '0x%x'", ssl_context_options)
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return ssl_context_options
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def ssl_context_minimum_version_by_options(ssl_context_options):
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logger.debug("SSL calculate minimum version by context options: '0x%x'", ssl_context_options)
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ssl_context_minimum_version = 0 # default
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if ((ssl_context_options & ssl.OP_NO_SSLv3) and (ssl_context_minimum_version == 0)):
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ssl_context_minimum_version = ssl.TLSVersion.TLSv1
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if ((ssl_context_options & ssl.OP_NO_TLSv1) and (ssl_context_minimum_version == ssl.TLSVersion.TLSv1)):
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ssl_context_minimum_version = ssl.TLSVersion.TLSv1_1
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if ((ssl_context_options & ssl.OP_NO_TLSv1_1) and (ssl_context_minimum_version == ssl.TLSVersion.TLSv1_1)):
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ssl_context_minimum_version = ssl.TLSVersion.TLSv1_2
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if ((ssl_context_options & ssl.OP_NO_TLSv1_2) and (ssl_context_minimum_version == ssl.TLSVersion.TLSv1_2)):
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ssl_context_minimum_version = ssl.TLSVersion.TLSv1_3
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if (ssl_context_minimum_version == 0):
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ssl_context_minimum_version = ssl.TLSVersion.SSLv3 # default
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logger.debug("SSL context options: '0x%x' results in minimum version: %s", ssl_context_options, ssl_context_minimum_version)
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return ssl_context_minimum_version
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def ssl_get_protocols(context):
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protocols = []
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if not (context.options & ssl.OP_NO_SSLv3):
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if (context.minimum_version < ssl.TLSVersion.TLSv1):
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protocols.append("SSLv3")
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if not (context.options & ssl.OP_NO_TLSv1):
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if (context.minimum_version < ssl.TLSVersion.TLSv1_1):
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protocols.append("TLSv1")
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if not (context.options & ssl.OP_NO_TLSv1_1):
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if (context.minimum_version < ssl.TLSVersion.TLSv1_2):
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protocols.append("TLSv1.1")
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if not (context.options & ssl.OP_NO_TLSv1_2):
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if (context.minimum_version < ssl.TLSVersion.TLSv1_3):
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protocols.append("TLSv1.2")
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if not (context.options & ssl.OP_NO_TLSv1_3):
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protocols.append("TLSv1.3")
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return protocols
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