annotate mercurial/sslutil.py @ 29618:fbf4adc0d8f2 stable

sslutil: capture string string representation of protocol This will be used in a subsequent patch to improve messaging.
author Gregory Szorc <gregory.szorc@gmail.com>
date Tue, 19 Jul 2016 20:30:29 -0700
parents 2960ceee1948
children 53e80179bd6a
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1 # sslutil.py - SSL handling for mercurial
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2 #
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3 # Copyright 2005, 2006, 2007, 2008 Matt Mackall <mpm@selenic.com>
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4 # Copyright 2006, 2007 Alexis S. L. Carvalho <alexis@cecm.usp.br>
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5 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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6 #
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7 # This software may be used and distributed according to the terms of the
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8 # GNU General Public License version 2 or any later version.
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9
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10 from __future__ import absolute_import
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11
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12 import hashlib
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13 import os
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14 import re
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15 import ssl
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16 import sys
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17
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18 from .i18n import _
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19 from . import (
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20 error,
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21 util,
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22 )
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23
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24 # Python 2.7.9+ overhauled the built-in SSL/TLS features of Python. It added
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25 # support for TLS 1.1, TLS 1.2, SNI, system CA stores, etc. These features are
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26 # all exposed via the "ssl" module.
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27 #
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28 # Depending on the version of Python being used, SSL/TLS support is either
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29 # modern/secure or legacy/insecure. Many operations in this module have
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30 # separate code paths depending on support in Python.
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31
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32 configprotocols = set([
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33 'tls1.0',
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34 'tls1.1',
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35 'tls1.2',
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36 ])
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37
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38 hassni = getattr(ssl, 'HAS_SNI', False)
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39
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40 # TLS 1.1 and 1.2 may not be supported if the OpenSSL Python is compiled
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41 # against doesn't support them.
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42 supportedprotocols = set(['tls1.0'])
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43 if util.safehasattr(ssl, 'PROTOCOL_TLSv1_1'):
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44 supportedprotocols.add('tls1.1')
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45 if util.safehasattr(ssl, 'PROTOCOL_TLSv1_2'):
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46 supportedprotocols.add('tls1.2')
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47
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48 try:
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49 # ssl.SSLContext was added in 2.7.9 and presence indicates modern
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50 # SSL/TLS features are available.
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51 SSLContext = ssl.SSLContext
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52 modernssl = True
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53 _canloaddefaultcerts = util.safehasattr(SSLContext, 'load_default_certs')
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54 except AttributeError:
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55 modernssl = False
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56 _canloaddefaultcerts = False
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57
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58 # We implement SSLContext using the interface from the standard library.
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59 class SSLContext(object):
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60 # ssl.wrap_socket gained the "ciphers" named argument in 2.7.
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61 _supportsciphers = sys.version_info >= (2, 7)
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62
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63 def __init__(self, protocol):
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64 # From the public interface of SSLContext
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65 self.protocol = protocol
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66 self.check_hostname = False
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67 self.options = 0
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68 self.verify_mode = ssl.CERT_NONE
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69
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70 # Used by our implementation.
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71 self._certfile = None
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72 self._keyfile = None
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73 self._certpassword = None
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74 self._cacerts = None
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75 self._ciphers = None
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76
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77 def load_cert_chain(self, certfile, keyfile=None, password=None):
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78 self._certfile = certfile
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79 self._keyfile = keyfile
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80 self._certpassword = password
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81
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82 def load_default_certs(self, purpose=None):
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83 pass
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84
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85 def load_verify_locations(self, cafile=None, capath=None, cadata=None):
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86 if capath:
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87 raise error.Abort(_('capath not supported'))
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88 if cadata:
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89 raise error.Abort(_('cadata not supported'))
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90
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91 self._cacerts = cafile
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92
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93 def set_ciphers(self, ciphers):
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94 if not self._supportsciphers:
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95 raise error.Abort(_('setting ciphers in [hostsecurity] is not '
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96 'supported by this version of Python'),
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97 hint=_('remove the config option or run '
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98 'Mercurial with a modern Python '
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99 'version (preferred)'))
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100
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101 self._ciphers = ciphers
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102
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103 def wrap_socket(self, socket, server_hostname=None, server_side=False):
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104 # server_hostname is unique to SSLContext.wrap_socket and is used
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105 # for SNI in that context. So there's nothing for us to do with it
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106 # in this legacy code since we don't support SNI.
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107
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108 args = {
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109 'keyfile': self._keyfile,
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110 'certfile': self._certfile,
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111 'server_side': server_side,
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112 'cert_reqs': self.verify_mode,
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113 'ssl_version': self.protocol,
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114 'ca_certs': self._cacerts,
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115 }
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116
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117 if self._supportsciphers:
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118 args['ciphers'] = self._ciphers
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119
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120 return ssl.wrap_socket(socket, **args)
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121
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122 def _hostsettings(ui, hostname):
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123 """Obtain security settings for a hostname.
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124
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125 Returns a dict of settings relevant to that hostname.
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126 """
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127 s = {
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128 # Whether we should attempt to load default/available CA certs
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129 # if an explicit ``cafile`` is not defined.
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130 'allowloaddefaultcerts': True,
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131 # List of 2-tuple of (hash algorithm, hash).
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132 'certfingerprints': [],
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133 # Path to file containing concatenated CA certs. Used by
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134 # SSLContext.load_verify_locations().
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135 'cafile': None,
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136 # Whether certificate verification should be disabled.
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137 'disablecertverification': False,
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f200b58497f1 sslutil: reference appropriate config section in messaging
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29267
diff changeset
138 # Whether the legacy [hostfingerprints] section has data for this host.
f200b58497f1 sslutil: reference appropriate config section in messaging
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29267
diff changeset
139 'legacyfingerprint': False,
29507
97dcdcf75f4f sslutil: move protocol determination to _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29501
diff changeset
140 # PROTOCOL_* constant to use for SSLContext.__init__.
97dcdcf75f4f sslutil: move protocol determination to _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29501
diff changeset
141 'protocol': None,
29618
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
142 # String representation of minimum protocol to be used for UI
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
143 # presentation.
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
144 'protocolui': None,
29259
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
145 # ssl.CERT_* constant used by SSLContext.verify_mode.
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
146 'verifymode': None,
29508
d65ec41b6384 sslutil: move context options flags to _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29507
diff changeset
147 # Defines extra ssl.OP* bitwise options to set.
d65ec41b6384 sslutil: move context options flags to _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29507
diff changeset
148 'ctxoptions': None,
29577
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
149 # OpenSSL Cipher List to use (instead of default).
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
150 'ciphers': None,
29258
6315c1e14f75 sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29253
diff changeset
151 }
6315c1e14f75 sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29253
diff changeset
152
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
153 # Allow minimum TLS protocol to be specified in the config.
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
154 def validateprotocol(protocol, key):
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
155 if protocol not in configprotocols:
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
156 raise error.Abort(
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
157 _('unsupported protocol from hostsecurity.%s: %s') %
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
158 (key, protocol),
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
159 hint=_('valid protocols: %s') %
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
160 ' '.join(sorted(configprotocols)))
29507
97dcdcf75f4f sslutil: move protocol determination to _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29501
diff changeset
161
29601
6cff2ac0ccb9 sslutil: more robustly detect protocol support
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29578
diff changeset
162 # We default to TLS 1.1+ where we can because TLS 1.0 has known
6cff2ac0ccb9 sslutil: more robustly detect protocol support
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29578
diff changeset
163 # vulnerabilities (like BEAST and POODLE). We allow users to downgrade to
6cff2ac0ccb9 sslutil: more robustly detect protocol support
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29578
diff changeset
164 # TLS 1.0+ via config options in case a legacy server is encountered.
6cff2ac0ccb9 sslutil: more robustly detect protocol support
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29578
diff changeset
165 if 'tls1.1' in supportedprotocols:
29560
303e9300772a sslutil: require TLS 1.1+ when supported
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29559
diff changeset
166 defaultprotocol = 'tls1.1'
303e9300772a sslutil: require TLS 1.1+ when supported
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29559
diff changeset
167 else:
29601
6cff2ac0ccb9 sslutil: more robustly detect protocol support
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29578
diff changeset
168 # Let people know they are borderline secure.
29561
1a782fabf80d sslutil: print a warning when using TLS 1.0 on legacy Python
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29560
diff changeset
169 # We don't document this config option because we want people to see
1a782fabf80d sslutil: print a warning when using TLS 1.0 on legacy Python
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29560
diff changeset
170 # the bold warnings on the web site.
1a782fabf80d sslutil: print a warning when using TLS 1.0 on legacy Python
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29560
diff changeset
171 # internal config: hostsecurity.disabletls10warning
1a782fabf80d sslutil: print a warning when using TLS 1.0 on legacy Python
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29560
diff changeset
172 if not ui.configbool('hostsecurity', 'disabletls10warning'):
1a782fabf80d sslutil: print a warning when using TLS 1.0 on legacy Python
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29560
diff changeset
173 ui.warn(_('warning: connecting to %s using legacy security '
1a782fabf80d sslutil: print a warning when using TLS 1.0 on legacy Python
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29560
diff changeset
174 'technology (TLS 1.0); see '
1a782fabf80d sslutil: print a warning when using TLS 1.0 on legacy Python
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29560
diff changeset
175 'https://mercurial-scm.org/wiki/SecureConnections for '
1a782fabf80d sslutil: print a warning when using TLS 1.0 on legacy Python
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29560
diff changeset
176 'more info\n') % hostname)
29560
303e9300772a sslutil: require TLS 1.1+ when supported
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29559
diff changeset
177 defaultprotocol = 'tls1.0'
303e9300772a sslutil: require TLS 1.1+ when supported
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29559
diff changeset
178
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
179 key = 'minimumprotocol'
29560
303e9300772a sslutil: require TLS 1.1+ when supported
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29559
diff changeset
180 protocol = ui.config('hostsecurity', key, defaultprotocol)
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
181 validateprotocol(protocol, key)
29508
d65ec41b6384 sslutil: move context options flags to _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29507
diff changeset
182
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
183 key = '%s:minimumprotocol' % hostname
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
184 protocol = ui.config('hostsecurity', key, protocol)
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
185 validateprotocol(protocol, key)
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
186
29617
2960ceee1948 sslutil: allow TLS 1.0 when --insecure is used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29601
diff changeset
187 # If --insecure is used, we allow the use of TLS 1.0 despite config options.
2960ceee1948 sslutil: allow TLS 1.0 when --insecure is used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29601
diff changeset
188 # We always print a "connection security to %s is disabled..." message when
2960ceee1948 sslutil: allow TLS 1.0 when --insecure is used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29601
diff changeset
189 # --insecure is used. So no need to print anything more here.
2960ceee1948 sslutil: allow TLS 1.0 when --insecure is used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29601
diff changeset
190 if ui.insecureconnections:
2960ceee1948 sslutil: allow TLS 1.0 when --insecure is used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29601
diff changeset
191 protocol = 'tls1.0'
2960ceee1948 sslutil: allow TLS 1.0 when --insecure is used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29601
diff changeset
192
29618
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
193 s['protocol'], s['ctxoptions'], s['protocolui'] = protocolsettings(protocol)
29558
a935cd7d51a6 sslutil: prevent CRIME
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29557
diff changeset
194
29577
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
195 ciphers = ui.config('hostsecurity', 'ciphers')
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
196 ciphers = ui.config('hostsecurity', '%s:ciphers' % hostname, ciphers)
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
197 s['ciphers'] = ciphers
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
198
29267
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
199 # Look for fingerprints in [hostsecurity] section. Value is a list
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
200 # of <alg>:<fingerprint> strings.
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
201 fingerprints = ui.configlist('hostsecurity', '%s:fingerprints' % hostname,
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
202 [])
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
203 for fingerprint in fingerprints:
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
204 if not (fingerprint.startswith(('sha1:', 'sha256:', 'sha512:'))):
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
205 raise error.Abort(_('invalid fingerprint for %s: %s') % (
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
206 hostname, fingerprint),
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
207 hint=_('must begin with "sha1:", "sha256:", '
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
208 'or "sha512:"'))
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
209
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
210 alg, fingerprint = fingerprint.split(':', 1)
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
211 fingerprint = fingerprint.replace(':', '').lower()
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
212 s['certfingerprints'].append((alg, fingerprint))
f0ccb6cde3e5 sslutil: allow fingerprints to be specified in [hostsecurity]
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29262
diff changeset
213
29258
6315c1e14f75 sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29253
diff changeset
214 # Fingerprints from [hostfingerprints] are always SHA-1.
6315c1e14f75 sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29253
diff changeset
215 for fingerprint in ui.configlist('hostfingerprints', hostname, []):
6315c1e14f75 sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29253
diff changeset
216 fingerprint = fingerprint.replace(':', '').lower()
6315c1e14f75 sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29253
diff changeset
217 s['certfingerprints'].append(('sha1', fingerprint))
29268
f200b58497f1 sslutil: reference appropriate config section in messaging
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29267
diff changeset
218 s['legacyfingerprint'] = True
29258
6315c1e14f75 sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29253
diff changeset
219
29259
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
220 # If a host cert fingerprint is defined, it is the only thing that
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
221 # matters. No need to validate CA certs.
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
222 if s['certfingerprints']:
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
223 s['verifymode'] = ssl.CERT_NONE
29447
13edc11eb7b7 sslutil: don't load default certificates when they aren't relevant
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29446
diff changeset
224 s['allowloaddefaultcerts'] = False
29259
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
225
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
226 # If --insecure is used, don't take CAs into consideration.
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
227 elif ui.insecureconnections:
29287
fbccb334efe7 sslutil: store flag for whether cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29286
diff changeset
228 s['disablecertverification'] = True
29259
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
229 s['verifymode'] = ssl.CERT_NONE
29447
13edc11eb7b7 sslutil: don't load default certificates when they aren't relevant
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29446
diff changeset
230 s['allowloaddefaultcerts'] = False
29259
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
231
29288
7dee15dee53c sslutil: add devel.disableloaddefaultcerts to disable CA loading
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29287
diff changeset
232 if ui.configbool('devel', 'disableloaddefaultcerts'):
7dee15dee53c sslutil: add devel.disableloaddefaultcerts to disable CA loading
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29287
diff changeset
233 s['allowloaddefaultcerts'] = False
7dee15dee53c sslutil: add devel.disableloaddefaultcerts to disable CA loading
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29287
diff changeset
234
29334
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
235 # If both fingerprints and a per-host ca file are specified, issue a warning
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
236 # because users should not be surprised about what security is or isn't
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
237 # being performed.
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
238 cafile = ui.config('hostsecurity', '%s:verifycertsfile' % hostname)
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
239 if s['certfingerprints'] and cafile:
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
240 ui.warn(_('(hostsecurity.%s:verifycertsfile ignored when host '
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
241 'fingerprints defined; using host fingerprints for '
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
242 'verification)\n') % hostname)
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
243
29260
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
244 # Try to hook up CA certificate validation unless something above
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
245 # makes it not necessary.
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
246 if s['verifymode'] is None:
29334
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
247 # Look at per-host ca file first.
29260
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
248 if cafile:
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
249 cafile = util.expandpath(cafile)
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
250 if not os.path.exists(cafile):
29334
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
251 raise error.Abort(_('path specified by %s does not exist: %s') %
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
252 ('hostsecurity.%s:verifycertsfile' % hostname,
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
253 cafile))
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
254 s['cafile'] = cafile
29260
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
255 else:
29334
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
256 # Find global certificates file in config.
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
257 cafile = ui.config('web', 'cacerts')
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
258
29260
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
259 if cafile:
29334
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
260 cafile = util.expandpath(cafile)
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
261 if not os.path.exists(cafile):
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
262 raise error.Abort(_('could not find web.cacerts: %s') %
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
263 cafile)
29484
53b7fc7cc2bb sslutil: don't attempt to find default CA certs file when told not to
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29483
diff changeset
264 elif s['allowloaddefaultcerts']:
29482
4e72995f6c9c sslutil: change comment and logged message for found ca cert file
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29459
diff changeset
265 # CAs not defined in config. Try to find system bundles.
29483
918dce4b8c26 sslutil: pass ui to _defaultcacerts
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29482
diff changeset
266 cafile = _defaultcacerts(ui)
29334
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
267 if cafile:
29482
4e72995f6c9c sslutil: change comment and logged message for found ca cert file
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29459
diff changeset
268 ui.debug('using %s for CA file\n' % cafile)
29260
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
269
29334
ecc9b788fd69 sslutil: per-host config option to define certificates
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29293
diff changeset
270 s['cafile'] = cafile
29260
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
271
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
272 # Require certificate validation if CA certs are being loaded and
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
273 # verification hasn't been disabled above.
29288
7dee15dee53c sslutil: add devel.disableloaddefaultcerts to disable CA loading
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29287
diff changeset
274 if cafile or (_canloaddefaultcerts and s['allowloaddefaultcerts']):
29260
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
275 s['verifymode'] = ssl.CERT_REQUIRED
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
276 else:
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
277 # At this point we don't have a fingerprint, aren't being
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
278 # explicitly insecure, and can't load CA certs. Connecting
29411
e1778b9c8d53 sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29410
diff changeset
279 # is insecure. We allow the connection and abort during
e1778b9c8d53 sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29410
diff changeset
280 # validation (once we have the fingerprint to print to the
e1778b9c8d53 sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29410
diff changeset
281 # user).
29260
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
282 s['verifymode'] = ssl.CERT_NONE
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
283
29507
97dcdcf75f4f sslutil: move protocol determination to _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29501
diff changeset
284 assert s['protocol'] is not None
29508
d65ec41b6384 sslutil: move context options flags to _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29507
diff changeset
285 assert s['ctxoptions'] is not None
29260
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
286 assert s['verifymode'] is not None
29259
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
287
29258
6315c1e14f75 sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29253
diff changeset
288 return s
6315c1e14f75 sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29253
diff changeset
289
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
290 def protocolsettings(protocol):
29618
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
291 """Resolve the protocol for a config value.
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
292
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
293 Returns a 3-tuple of (protocol, options, ui value) where the first
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
294 2 items are values used by SSLContext and the last is a string value
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
295 of the ``minimumprotocol`` config option equivalent.
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
296 """
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
297 if protocol not in configprotocols:
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
298 raise ValueError('protocol value not supported: %s' % protocol)
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
299
29578
4a4b8d3b4e43 sslutil: move comment about protocol constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29577
diff changeset
300 # Despite its name, PROTOCOL_SSLv23 selects the highest protocol
4a4b8d3b4e43 sslutil: move comment about protocol constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29577
diff changeset
301 # that both ends support, including TLS protocols. On legacy stacks,
4a4b8d3b4e43 sslutil: move comment about protocol constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29577
diff changeset
302 # the highest it likely goes is TLS 1.0. On modern stacks, it can
4a4b8d3b4e43 sslutil: move comment about protocol constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29577
diff changeset
303 # support TLS 1.2.
4a4b8d3b4e43 sslutil: move comment about protocol constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29577
diff changeset
304 #
4a4b8d3b4e43 sslutil: move comment about protocol constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29577
diff changeset
305 # The PROTOCOL_TLSv* constants select a specific TLS version
4a4b8d3b4e43 sslutil: move comment about protocol constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29577
diff changeset
306 # only (as opposed to multiple versions). So the method for
4a4b8d3b4e43 sslutil: move comment about protocol constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29577
diff changeset
307 # supporting multiple TLS versions is to use PROTOCOL_SSLv23 and
4a4b8d3b4e43 sslutil: move comment about protocol constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29577
diff changeset
308 # disable protocols via SSLContext.options and OP_NO_* constants.
4a4b8d3b4e43 sslutil: move comment about protocol constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29577
diff changeset
309 # However, SSLContext.options doesn't work unless we have the
4a4b8d3b4e43 sslutil: move comment about protocol constants
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29577
diff changeset
310 # full/real SSLContext available to us.
29601
6cff2ac0ccb9 sslutil: more robustly detect protocol support
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29578
diff changeset
311 if supportedprotocols == set(['tls1.0']):
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
312 if protocol != 'tls1.0':
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
313 raise error.Abort(_('current Python does not support protocol '
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
314 'setting %s') % protocol,
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
315 hint=_('upgrade Python or disable setting since '
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
316 'only TLS 1.0 is supported'))
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
317
29618
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
318 return ssl.PROTOCOL_TLSv1, 0, 'tls1.0'
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
319
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
320 # WARNING: returned options don't work unless the modern ssl module
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
321 # is available. Be careful when adding options here.
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
322
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
323 # SSLv2 and SSLv3 are broken. We ban them outright.
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
324 options = ssl.OP_NO_SSLv2 | ssl.OP_NO_SSLv3
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
325
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
326 if protocol == 'tls1.0':
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
327 # Defaults above are to use TLS 1.0+
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
328 pass
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
329 elif protocol == 'tls1.1':
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
330 options |= ssl.OP_NO_TLSv1
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
331 elif protocol == 'tls1.2':
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
332 options |= ssl.OP_NO_TLSv1 | ssl.OP_NO_TLSv1_1
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
333 else:
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
334 raise error.Abort(_('this should not happen'))
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
335
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
336 # Prevent CRIME.
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
337 # There is no guarantee this attribute is defined on the module.
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
338 options |= getattr(ssl, 'OP_NO_COMPRESSION', 0)
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
339
29618
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
340 return ssl.PROTOCOL_SSLv23, options, protocol
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
341
29249
cca59ef27e60 sslutil: move sslkwargs logic into internal function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29248
diff changeset
342 def wrapsocket(sock, keyfile, certfile, ui, serverhostname=None):
28653
1eb0bd8adf39 sslutil: add docstring to wrapsocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28652
diff changeset
343 """Add SSL/TLS to a socket.
1eb0bd8adf39 sslutil: add docstring to wrapsocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28652
diff changeset
344
1eb0bd8adf39 sslutil: add docstring to wrapsocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28652
diff changeset
345 This is a glorified wrapper for ``ssl.wrap_socket()``. It makes sane
1eb0bd8adf39 sslutil: add docstring to wrapsocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28652
diff changeset
346 choices based on what security options are available.
1eb0bd8adf39 sslutil: add docstring to wrapsocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28652
diff changeset
347
1eb0bd8adf39 sslutil: add docstring to wrapsocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28652
diff changeset
348 In addition to the arguments supported by ``ssl.wrap_socket``, we allow
1eb0bd8adf39 sslutil: add docstring to wrapsocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28652
diff changeset
349 the following additional arguments:
1eb0bd8adf39 sslutil: add docstring to wrapsocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28652
diff changeset
350
1eb0bd8adf39 sslutil: add docstring to wrapsocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28652
diff changeset
351 * serverhostname - The expected hostname of the remote server. If the
1eb0bd8adf39 sslutil: add docstring to wrapsocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28652
diff changeset
352 server (and client) support SNI, this tells the server which certificate
1eb0bd8adf39 sslutil: add docstring to wrapsocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28652
diff changeset
353 to use.
1eb0bd8adf39 sslutil: add docstring to wrapsocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28652
diff changeset
354 """
29224
7424f4294199 sslutil: require serverhostname argument (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29115
diff changeset
355 if not serverhostname:
29389
98e8313dcd9e i18n: translate abort messages
liscju <piotr.listkiewicz@gmail.com>
parents: 29341
diff changeset
356 raise error.Abort(_('serverhostname argument is required'))
29224
7424f4294199 sslutil: require serverhostname argument (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29115
diff changeset
357
29259
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
358 settings = _hostsettings(ui, serverhostname)
29249
cca59ef27e60 sslutil: move sslkwargs logic into internal function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29248
diff changeset
359
29557
53de8255ec4e sslutil: update comment about create_default_context()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29554
diff changeset
360 # We can't use ssl.create_default_context() because it calls
53de8255ec4e sslutil: update comment about create_default_context()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29554
diff changeset
361 # load_default_certs() unless CA arguments are passed to it. We want to
53de8255ec4e sslutil: update comment about create_default_context()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29554
diff changeset
362 # have explicit control over CA loading because implicitly loading
53de8255ec4e sslutil: update comment about create_default_context()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29554
diff changeset
363 # CAs may undermine the user's intent. For example, a user may define a CA
53de8255ec4e sslutil: update comment about create_default_context()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29554
diff changeset
364 # bundle with a specific CA cert removed. If the system/default CA bundle
53de8255ec4e sslutil: update comment about create_default_context()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29554
diff changeset
365 # is loaded and contains that removed CA, you've just undone the user's
53de8255ec4e sslutil: update comment about create_default_context()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29554
diff changeset
366 # choice.
29507
97dcdcf75f4f sslutil: move protocol determination to _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29501
diff changeset
367 sslcontext = SSLContext(settings['protocol'])
97dcdcf75f4f sslutil: move protocol determination to _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29501
diff changeset
368
29508
d65ec41b6384 sslutil: move context options flags to _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29507
diff changeset
369 # This is a no-op unless using modern ssl.
d65ec41b6384 sslutil: move context options flags to _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29507
diff changeset
370 sslcontext.options |= settings['ctxoptions']
28651
4827d07073e6 sslutil: always use SSLContext
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28650
diff changeset
371
28848
e330db205b20 sslutil: move and document verify_mode assignment
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28653
diff changeset
372 # This still works on our fake SSLContext.
29260
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
373 sslcontext.verify_mode = settings['verifymode']
28848
e330db205b20 sslutil: move and document verify_mode assignment
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28653
diff changeset
374
29577
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
375 if settings['ciphers']:
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
376 try:
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
377 sslcontext.set_ciphers(settings['ciphers'])
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
378 except ssl.SSLError as e:
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
379 raise error.Abort(_('could not set ciphers: %s') % e.args[0],
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
380 hint=_('change cipher string (%s) in config') %
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
381 settings['ciphers'])
9654ef41f7cc sslutil: support defining cipher list
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29561
diff changeset
382
28652
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
383 if certfile is not None:
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
384 def password():
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
385 f = keyfile or certfile
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
386 return ui.getpass(_('passphrase for %s: ') % f, '')
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
387 sslcontext.load_cert_chain(certfile, keyfile, password)
28848
e330db205b20 sslutil: move and document verify_mode assignment
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28653
diff changeset
388
29260
70bc9912d83d sslutil: move CA file processing into _hostsettings()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29259
diff changeset
389 if settings['cafile'] is not None:
29446
2f7f1e10f840 sslutil: display a better error message when CA file loading fails
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29411
diff changeset
390 try:
2f7f1e10f840 sslutil: display a better error message when CA file loading fails
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29411
diff changeset
391 sslcontext.load_verify_locations(cafile=settings['cafile'])
2f7f1e10f840 sslutil: display a better error message when CA file loading fails
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29411
diff changeset
392 except ssl.SSLError as e:
2f7f1e10f840 sslutil: display a better error message when CA file loading fails
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29411
diff changeset
393 raise error.Abort(_('error loading CA file %s: %s') % (
2f7f1e10f840 sslutil: display a better error message when CA file loading fails
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29411
diff changeset
394 settings['cafile'], e.args[1]),
2f7f1e10f840 sslutil: display a better error message when CA file loading fails
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29411
diff changeset
395 hint=_('file is empty or malformed?'))
29113
5b9577edf745 sslutil: use CA loaded state to drive validation logic
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29112
diff changeset
396 caloaded = True
29288
7dee15dee53c sslutil: add devel.disableloaddefaultcerts to disable CA loading
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29287
diff changeset
397 elif settings['allowloaddefaultcerts']:
28652
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
398 # This is a no-op on old Python.
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
399 sslcontext.load_default_certs()
29288
7dee15dee53c sslutil: add devel.disableloaddefaultcerts to disable CA loading
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29287
diff changeset
400 caloaded = True
7dee15dee53c sslutil: add devel.disableloaddefaultcerts to disable CA loading
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29287
diff changeset
401 else:
7dee15dee53c sslutil: add devel.disableloaddefaultcerts to disable CA loading
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29287
diff changeset
402 caloaded = False
23834
bf07c19b4c82 https: support tls sni (server name indication) for https urls (issue3090)
Alex Orange <crazycasta@gmail.com>
parents: 23069
diff changeset
403
29449
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
404 try:
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
405 sslsocket = sslcontext.wrap_socket(sock, server_hostname=serverhostname)
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
406 except ssl.SSLError as e:
29449
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
407 # If we're doing certificate verification and no CA certs are loaded,
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
408 # that is almost certainly the reason why verification failed. Provide
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
409 # a hint to the user.
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
410 # Only modern ssl module exposes SSLContext.get_ca_certs() so we can
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
411 # only show this warning if modern ssl is available.
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
412 if (caloaded and settings['verifymode'] == ssl.CERT_REQUIRED and
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
413 modernssl and not sslcontext.get_ca_certs()):
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
414 ui.warn(_('(an attempt was made to load CA certificates but none '
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
415 'were loaded; see '
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
416 'https://mercurial-scm.org/wiki/SecureConnections for '
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
417 'how to configure Mercurial to avoid this error)\n'))
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
418 # Try to print more helpful error messages for known failures.
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
419 if util.safehasattr(e, 'reason'):
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
420 if e.reason == 'UNSUPPORTED_PROTOCOL':
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
421 ui.warn(_('(could not negotiate a common protocol; see '
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
422 'https://mercurial-scm.org/wiki/SecureConnections '
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
423 'for how to configure Mercurial to avoid this '
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
424 'error)\n'))
29449
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
425 raise
5b71a8d7f7ff sslutil: emit warning when no CA certificates loaded
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29447
diff changeset
426
28652
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
427 # check if wrap_socket failed silently because socket had been
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
428 # closed
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
429 # - see http://bugs.python.org/issue13721
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
430 if not sslsocket.cipher():
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
431 raise error.Abort(_('ssl connection failed'))
29113
5b9577edf745 sslutil: use CA loaded state to drive validation logic
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29112
diff changeset
432
29225
b115eed11780 sslutil: use a dict for hanging hg state off the wrapped socket
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29224
diff changeset
433 sslsocket._hgstate = {
b115eed11780 sslutil: use a dict for hanging hg state off the wrapped socket
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29224
diff changeset
434 'caloaded': caloaded,
29226
33006bd6a1d7 sslutil: store and use hostname and ui in socket instance
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29225
diff changeset
435 'hostname': serverhostname,
29259
ec247e8595f9 sslutil: move SSLContext.verify_mode value into _hostsettings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29258
diff changeset
436 'settings': settings,
29226
33006bd6a1d7 sslutil: store and use hostname and ui in socket instance
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29225
diff changeset
437 'ui': ui,
29225
b115eed11780 sslutil: use a dict for hanging hg state off the wrapped socket
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29224
diff changeset
438 }
29113
5b9577edf745 sslutil: use CA loaded state to drive validation logic
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29112
diff changeset
439
28652
c617614aefd2 sslutil: remove indentation in wrapsocket declaration
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28651
diff changeset
440 return sslsocket
14204
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
441
29554
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
442 def wrapserversocket(sock, ui, certfile=None, keyfile=None, cafile=None,
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
443 requireclientcert=False):
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
444 """Wrap a socket for use by servers.
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
445
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
446 ``certfile`` and ``keyfile`` specify the files containing the certificate's
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
447 public and private keys, respectively. Both keys can be defined in the same
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
448 file via ``certfile`` (the private key must come first in the file).
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
449
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
450 ``cafile`` defines the path to certificate authorities.
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
451
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
452 ``requireclientcert`` specifies whether to require client certificates.
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
453
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
454 Typically ``cafile`` is only defined if ``requireclientcert`` is true.
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
455 """
29618
fbf4adc0d8f2 sslutil: capture string string representation of protocol
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29617
diff changeset
456 protocol, options, _protocolui = protocolsettings('tls1.0')
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
457
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
458 # This config option is intended for use in tests only. It is a giant
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
459 # footgun to kill security. Don't define it.
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
460 exactprotocol = ui.config('devel', 'serverexactprotocol')
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
461 if exactprotocol == 'tls1.0':
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
462 protocol = ssl.PROTOCOL_TLSv1
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
463 elif exactprotocol == 'tls1.1':
29601
6cff2ac0ccb9 sslutil: more robustly detect protocol support
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29578
diff changeset
464 if 'tls1.1' not in supportedprotocols:
6cff2ac0ccb9 sslutil: more robustly detect protocol support
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29578
diff changeset
465 raise error.Abort(_('TLS 1.1 not supported by this Python'))
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
466 protocol = ssl.PROTOCOL_TLSv1_1
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
467 elif exactprotocol == 'tls1.2':
29601
6cff2ac0ccb9 sslutil: more robustly detect protocol support
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29578
diff changeset
468 if 'tls1.2' not in supportedprotocols:
6cff2ac0ccb9 sslutil: more robustly detect protocol support
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29578
diff changeset
469 raise error.Abort(_('TLS 1.2 not supported by this Python'))
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
470 protocol = ssl.PROTOCOL_TLSv1_2
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
471 elif exactprotocol:
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
472 raise error.Abort(_('invalid value for serverexactprotocol: %s') %
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
473 exactprotocol)
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
474
29554
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
475 if modernssl:
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
476 # We /could/ use create_default_context() here since it doesn't load
29559
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
477 # CAs when configured for client auth. However, it is hard-coded to
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
478 # use ssl.PROTOCOL_SSLv23 which may not be appropriate here.
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
479 sslcontext = SSLContext(protocol)
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
480 sslcontext.options |= options
7dec5e441bf7 sslutil: config option to specify TLS protocol version
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29558
diff changeset
481
29554
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
482 # Improve forward secrecy.
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
483 sslcontext.options |= getattr(ssl, 'OP_SINGLE_DH_USE', 0)
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
484 sslcontext.options |= getattr(ssl, 'OP_SINGLE_ECDH_USE', 0)
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
485
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
486 # Use the list of more secure ciphers if found in the ssl module.
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
487 if util.safehasattr(ssl, '_RESTRICTED_SERVER_CIPHERS'):
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
488 sslcontext.options |= getattr(ssl, 'OP_CIPHER_SERVER_PREFERENCE', 0)
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
489 sslcontext.set_ciphers(ssl._RESTRICTED_SERVER_CIPHERS)
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
490 else:
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
491 sslcontext = SSLContext(ssl.PROTOCOL_TLSv1)
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
492
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
493 if requireclientcert:
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
494 sslcontext.verify_mode = ssl.CERT_REQUIRED
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
495 else:
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
496 sslcontext.verify_mode = ssl.CERT_NONE
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
497
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
498 if certfile or keyfile:
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
499 sslcontext.load_cert_chain(certfile=certfile, keyfile=keyfile)
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
500
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
501 if cafile:
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
502 sslcontext.load_verify_locations(cafile=cafile)
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
503
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
504 return sslcontext.wrap_socket(sock, server_side=True)
4a7b0c696fbc sslutil: implement wrapserversocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29537
diff changeset
505
29452
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
506 class wildcarderror(Exception):
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
507 """Represents an error parsing wildcards in DNS name."""
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
508
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
509 def _dnsnamematch(dn, hostname, maxwildcards=1):
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
510 """Match DNS names according RFC 6125 section 6.4.3.
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
511
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
512 This code is effectively copied from CPython's ssl._dnsname_match.
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
513
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
514 Returns a bool indicating whether the expected hostname matches
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
515 the value in ``dn``.
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
516 """
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
517 pats = []
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
518 if not dn:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
519 return False
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
520
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
521 pieces = dn.split(r'.')
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
522 leftmost = pieces[0]
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
523 remainder = pieces[1:]
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
524 wildcards = leftmost.count('*')
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
525 if wildcards > maxwildcards:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
526 raise wildcarderror(
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
527 _('too many wildcards in certificate DNS name: %s') % dn)
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
528
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
529 # speed up common case w/o wildcards
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
530 if not wildcards:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
531 return dn.lower() == hostname.lower()
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
532
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
533 # RFC 6125, section 6.4.3, subitem 1.
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
534 # The client SHOULD NOT attempt to match a presented identifier in which
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
535 # the wildcard character comprises a label other than the left-most label.
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
536 if leftmost == '*':
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
537 # When '*' is a fragment by itself, it matches a non-empty dotless
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
538 # fragment.
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
539 pats.append('[^.]+')
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
540 elif leftmost.startswith('xn--') or hostname.startswith('xn--'):
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
541 # RFC 6125, section 6.4.3, subitem 3.
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
542 # The client SHOULD NOT attempt to match a presented identifier
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
543 # where the wildcard character is embedded within an A-label or
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
544 # U-label of an internationalized domain name.
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
545 pats.append(re.escape(leftmost))
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
546 else:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
547 # Otherwise, '*' matches any dotless string, e.g. www*
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
548 pats.append(re.escape(leftmost).replace(r'\*', '[^.]*'))
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
549
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
550 # add the remaining fragments, ignore any wildcards
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
551 for frag in remainder:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
552 pats.append(re.escape(frag))
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
553
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
554 pat = re.compile(r'\A' + r'\.'.join(pats) + r'\Z', re.IGNORECASE)
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
555 return pat.match(hostname) is not None
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
556
14204
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
557 def _verifycert(cert, hostname):
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
558 '''Verify that cert (in socket.getpeercert() format) matches hostname.
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
559 CRLs is not handled.
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
560
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
561 Returns error message if any problems are found and None on success.
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
562 '''
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
563 if not cert:
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
564 return _('no certificate received')
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
565
29452
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
566 dnsnames = []
14204
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
567 san = cert.get('subjectAltName', [])
29452
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
568 for key, value in san:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
569 if key == 'DNS':
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
570 try:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
571 if _dnsnamematch(value, hostname):
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
572 return
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
573 except wildcarderror as e:
29460
a7d1532b26a1 sslutil: don't access message attribute in exception (issue5285)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29452
diff changeset
574 return e.args[0]
29452
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
575
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
576 dnsnames.append(value)
14204
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
577
29452
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
578 if not dnsnames:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
579 # The subject is only checked when there is no DNS in subjectAltName.
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
580 for sub in cert.get('subject', []):
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
581 for key, value in sub:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
582 # According to RFC 2818 the most specific Common Name must
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
583 # be used.
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
584 if key == 'commonName':
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
585 # 'subject' entries are unicide.
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
586 try:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
587 value = value.encode('ascii')
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
588 except UnicodeEncodeError:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
589 return _('IDN in certificate not supported')
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
590
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
591 try:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
592 if _dnsnamematch(value, hostname):
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
593 return
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
594 except wildcarderror as e:
29460
a7d1532b26a1 sslutil: don't access message attribute in exception (issue5285)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29452
diff changeset
595 return e.args[0]
29452
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
596
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
597 dnsnames.append(value)
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
598
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
599 if len(dnsnames) > 1:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
600 return _('certificate is for %s') % ', '.join(dnsnames)
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
601 elif len(dnsnames) == 1:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
602 return _('certificate is for %s') % dnsnames[0]
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
603 else:
26a5d605b868 sslutil: synchronize hostname matching logic with CPython
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29042
diff changeset
604 return _('no commonName or subjectAltName found in certificate')
14204
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
605
23042
2cd3fa4412dc ssl: only use the dummy cert hack if using an Apple Python (issue4410)
Mads Kiilerich <madski@unity3d.com>
parents: 22575
diff changeset
606 def _plainapplepython():
2cd3fa4412dc ssl: only use the dummy cert hack if using an Apple Python (issue4410)
Mads Kiilerich <madski@unity3d.com>
parents: 22575
diff changeset
607 """return true if this seems to be a pure Apple Python that
2cd3fa4412dc ssl: only use the dummy cert hack if using an Apple Python (issue4410)
Mads Kiilerich <madski@unity3d.com>
parents: 22575
diff changeset
608 * is unfrozen and presumably has the whole mercurial module in the file
2cd3fa4412dc ssl: only use the dummy cert hack if using an Apple Python (issue4410)
Mads Kiilerich <madski@unity3d.com>
parents: 22575
diff changeset
609 system
2cd3fa4412dc ssl: only use the dummy cert hack if using an Apple Python (issue4410)
Mads Kiilerich <madski@unity3d.com>
parents: 22575
diff changeset
610 * presumably is an Apple Python that uses Apple OpenSSL which has patches
2cd3fa4412dc ssl: only use the dummy cert hack if using an Apple Python (issue4410)
Mads Kiilerich <madski@unity3d.com>
parents: 22575
diff changeset
611 for using system certificate store CAs in addition to the provided
2cd3fa4412dc ssl: only use the dummy cert hack if using an Apple Python (issue4410)
Mads Kiilerich <madski@unity3d.com>
parents: 22575
diff changeset
612 cacerts file
2cd3fa4412dc ssl: only use the dummy cert hack if using an Apple Python (issue4410)
Mads Kiilerich <madski@unity3d.com>
parents: 22575
diff changeset
613 """
24614
241d98d84aed ssl: resolve symlink before checking for Apple python executable (issue4588)
Yuya Nishihara <yuya@tcha.org>
parents: 24291
diff changeset
614 if sys.platform != 'darwin' or util.mainfrozen() or not sys.executable:
23042
2cd3fa4412dc ssl: only use the dummy cert hack if using an Apple Python (issue4410)
Mads Kiilerich <madski@unity3d.com>
parents: 22575
diff changeset
615 return False
24614
241d98d84aed ssl: resolve symlink before checking for Apple python executable (issue4588)
Yuya Nishihara <yuya@tcha.org>
parents: 24291
diff changeset
616 exe = os.path.realpath(sys.executable).lower()
23042
2cd3fa4412dc ssl: only use the dummy cert hack if using an Apple Python (issue4410)
Mads Kiilerich <madski@unity3d.com>
parents: 22575
diff changeset
617 return (exe.startswith('/usr/bin/python') or
2cd3fa4412dc ssl: only use the dummy cert hack if using an Apple Python (issue4410)
Mads Kiilerich <madski@unity3d.com>
parents: 22575
diff changeset
618 exe.startswith('/system/library/frameworks/python.framework/'))
2cd3fa4412dc ssl: only use the dummy cert hack if using an Apple Python (issue4410)
Mads Kiilerich <madski@unity3d.com>
parents: 22575
diff changeset
619
29500
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
620 _systemcacertpaths = [
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
621 # RHEL, CentOS, and Fedora
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
622 '/etc/pki/tls/certs/ca-bundle.trust.crt',
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
623 # Debian, Ubuntu, Gentoo
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
624 '/etc/ssl/certs/ca-certificates.crt',
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
625 ]
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
626
29483
918dce4b8c26 sslutil: pass ui to _defaultcacerts
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29482
diff changeset
627 def _defaultcacerts(ui):
29488
1c26b9ce66f8 sslutil: expand _defaultcacerts docstring to note calling assumptions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29487
diff changeset
628 """return path to default CA certificates or None.
1c26b9ce66f8 sslutil: expand _defaultcacerts docstring to note calling assumptions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29487
diff changeset
629
1c26b9ce66f8 sslutil: expand _defaultcacerts docstring to note calling assumptions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29487
diff changeset
630 It is assumed this function is called when the returned certificates
1c26b9ce66f8 sslutil: expand _defaultcacerts docstring to note calling assumptions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29487
diff changeset
631 file will actually be used to validate connections. Therefore this
1c26b9ce66f8 sslutil: expand _defaultcacerts docstring to note calling assumptions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29487
diff changeset
632 function may print warnings or debug messages assuming this usage.
29500
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
633
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
634 We don't print a message when the Python is able to load default
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
635 CA certs because this scenario is detected at socket connect time.
29488
1c26b9ce66f8 sslutil: expand _defaultcacerts docstring to note calling assumptions
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29487
diff changeset
636 """
29486
a62c00f6dd04 sslutil: use certificates provided by certifi if available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29484
diff changeset
637 # The "certifi" Python package provides certificates. If it is installed,
a62c00f6dd04 sslutil: use certificates provided by certifi if available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29484
diff changeset
638 # assume the user intends it to be used and use it.
a62c00f6dd04 sslutil: use certificates provided by certifi if available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29484
diff changeset
639 try:
a62c00f6dd04 sslutil: use certificates provided by certifi if available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29484
diff changeset
640 import certifi
a62c00f6dd04 sslutil: use certificates provided by certifi if available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29484
diff changeset
641 certs = certifi.where()
a62c00f6dd04 sslutil: use certificates provided by certifi if available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29484
diff changeset
642 ui.debug('using ca certificates from certifi\n')
a62c00f6dd04 sslutil: use certificates provided by certifi if available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29484
diff changeset
643 return certs
a62c00f6dd04 sslutil: use certificates provided by certifi if available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29484
diff changeset
644 except ImportError:
a62c00f6dd04 sslutil: use certificates provided by certifi if available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29484
diff changeset
645 pass
a62c00f6dd04 sslutil: use certificates provided by certifi if available
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29484
diff changeset
646
29489
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
647 # On Windows, only the modern ssl module is capable of loading the system
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
648 # CA certificates. If we're not capable of doing that, emit a warning
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
649 # because we'll get a certificate verification error later and the lack
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
650 # of loaded CA certificates will be the reason why.
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
651 # Assertion: this code is only called if certificates are being verified.
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
652 if os.name == 'nt':
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
653 if not _canloaddefaultcerts:
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
654 ui.warn(_('(unable to load Windows CA certificates; see '
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
655 'https://mercurial-scm.org/wiki/SecureConnections for '
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
656 'how to configure Mercurial to avoid this message)\n'))
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
657
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
658 return None
54ad81b0665f sslutil: handle default CA certificate loading on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29488
diff changeset
659
29487
cdcb5747dc88 sslutil: document the Apple OpenSSL cert trick
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29486
diff changeset
660 # Apple's OpenSSL has patches that allow a specially constructed certificate
cdcb5747dc88 sslutil: document the Apple OpenSSL cert trick
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29486
diff changeset
661 # to load the system CA store. If we're running on Apple Python, use this
cdcb5747dc88 sslutil: document the Apple OpenSSL cert trick
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29486
diff changeset
662 # trick.
24288
922e087ba158 ssl: extract function that returns dummycert path on Apple python
Yuya Nishihara <yuya@tcha.org>
parents: 23851
diff changeset
663 if _plainapplepython():
922e087ba158 ssl: extract function that returns dummycert path on Apple python
Yuya Nishihara <yuya@tcha.org>
parents: 23851
diff changeset
664 dummycert = os.path.join(os.path.dirname(__file__), 'dummycert.pem')
922e087ba158 ssl: extract function that returns dummycert path on Apple python
Yuya Nishihara <yuya@tcha.org>
parents: 23851
diff changeset
665 if os.path.exists(dummycert):
922e087ba158 ssl: extract function that returns dummycert path on Apple python
Yuya Nishihara <yuya@tcha.org>
parents: 23851
diff changeset
666 return dummycert
29107
c8fbfb9163ce sslutil: move code examining _canloaddefaultcerts out of _defaultcacerts
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29106
diff changeset
667
29499
9c5325c79683 sslutil: issue warning when unable to load certificates on OS X
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29489
diff changeset
668 # The Apple OpenSSL trick isn't available to us. If Python isn't able to
9c5325c79683 sslutil: issue warning when unable to load certificates on OS X
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29489
diff changeset
669 # load system certs, we're out of luck.
9c5325c79683 sslutil: issue warning when unable to load certificates on OS X
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29489
diff changeset
670 if sys.platform == 'darwin':
9c5325c79683 sslutil: issue warning when unable to load certificates on OS X
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29489
diff changeset
671 # FUTURE Consider looking for Homebrew or MacPorts installed certs
9c5325c79683 sslutil: issue warning when unable to load certificates on OS X
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29489
diff changeset
672 # files. Also consider exporting the keychain certs to a file during
9c5325c79683 sslutil: issue warning when unable to load certificates on OS X
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29489
diff changeset
673 # Mercurial install.
9c5325c79683 sslutil: issue warning when unable to load certificates on OS X
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29489
diff changeset
674 if not _canloaddefaultcerts:
9c5325c79683 sslutil: issue warning when unable to load certificates on OS X
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29489
diff changeset
675 ui.warn(_('(unable to load CA certificates; see '
9c5325c79683 sslutil: issue warning when unable to load certificates on OS X
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29489
diff changeset
676 'https://mercurial-scm.org/wiki/SecureConnections for '
9c5325c79683 sslutil: issue warning when unable to load certificates on OS X
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29489
diff changeset
677 'how to configure Mercurial to avoid this message)\n'))
24291
760a86865f80 ssl: load CA certificates from system's store by default on Python 2.7.9
Yuya Nishihara <yuya@tcha.org>
parents: 24290
diff changeset
678 return None
24288
922e087ba158 ssl: extract function that returns dummycert path on Apple python
Yuya Nishihara <yuya@tcha.org>
parents: 23851
diff changeset
679
29537
5f8b36d5a6ec sslutil: add assertion to prevent accidental CA usage on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29508
diff changeset
680 # / is writable on Windows. Out of an abundance of caution make sure
5f8b36d5a6ec sslutil: add assertion to prevent accidental CA usage on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29508
diff changeset
681 # we're not on Windows because paths from _systemcacerts could be installed
5f8b36d5a6ec sslutil: add assertion to prevent accidental CA usage on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29508
diff changeset
682 # by non-admin users.
5f8b36d5a6ec sslutil: add assertion to prevent accidental CA usage on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29508
diff changeset
683 assert os.name != 'nt'
5f8b36d5a6ec sslutil: add assertion to prevent accidental CA usage on Windows
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29508
diff changeset
684
29500
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
685 # Try to find CA certificates in well-known locations. We print a warning
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
686 # when using a found file because we don't want too much silent magic
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
687 # for security settings. The expectation is that proper Mercurial
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
688 # installs will have the CA certs path defined at install time and the
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
689 # installer/packager will make an appropriate decision on the user's
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
690 # behalf. We only get here and perform this setting as a feature of
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
691 # last resort.
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
692 if not _canloaddefaultcerts:
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
693 for path in _systemcacertpaths:
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
694 if os.path.isfile(path):
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
695 ui.warn(_('(using CA certificates from %s; if you see this '
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
696 'message, your Mercurial install is not properly '
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
697 'configured; see '
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
698 'https://mercurial-scm.org/wiki/SecureConnections '
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
699 'for how to configure Mercurial to avoid this '
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
700 'message)\n') % path)
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
701 return path
14204
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
702
29500
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
703 ui.warn(_('(unable to load CA certificates; see '
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
704 'https://mercurial-scm.org/wiki/SecureConnections for '
4b16a5bd9948 sslutil: try to find CA certficates in well-known locations
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29499
diff changeset
705 'how to configure Mercurial to avoid this message)\n'))
14204
5fa21960b2f4 sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff changeset
706
29107
c8fbfb9163ce sslutil: move code examining _canloaddefaultcerts out of _defaultcacerts
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29106
diff changeset
707 return None
24288
922e087ba158 ssl: extract function that returns dummycert path on Apple python
Yuya Nishihara <yuya@tcha.org>
parents: 23851
diff changeset
708
29286
a05a91a3f120 sslutil: remove "strict" argument from validatesocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29268
diff changeset
709 def validatesocket(sock):
29227
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
710 """Validate a socket meets security requiremnets.
18879
93b03a222c3e sslutil: try harder to avoid getpeercert problems
Matt Mackall <mpm@selenic.com>
parents: 16391
diff changeset
711
29227
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
712 The passed socket must have been created with ``wrapsocket()``.
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
713 """
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
714 host = sock._hgstate['hostname']
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
715 ui = sock._hgstate['ui']
29258
6315c1e14f75 sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29253
diff changeset
716 settings = sock._hgstate['settings']
18879
93b03a222c3e sslutil: try harder to avoid getpeercert problems
Matt Mackall <mpm@selenic.com>
parents: 16391
diff changeset
717
29227
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
718 try:
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
719 peercert = sock.getpeercert(True)
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
720 peercert2 = sock.getpeercert()
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
721 except AttributeError:
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
722 raise error.Abort(_('%s ssl connection error') % host)
24288
922e087ba158 ssl: extract function that returns dummycert path on Apple python
Yuya Nishihara <yuya@tcha.org>
parents: 23851
diff changeset
723
29227
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
724 if not peercert:
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
725 raise error.Abort(_('%s certificate error: '
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
726 'no certificate received') % host)
18879
93b03a222c3e sslutil: try harder to avoid getpeercert problems
Matt Mackall <mpm@selenic.com>
parents: 16391
diff changeset
727
29289
3536673a25ae sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29288
diff changeset
728 if settings['disablecertverification']:
3536673a25ae sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29288
diff changeset
729 # We don't print the certificate fingerprint because it shouldn't
3536673a25ae sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29288
diff changeset
730 # be necessary: if the user requested certificate verification be
3536673a25ae sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29288
diff changeset
731 # disabled, they presumably already saw a message about the inability
3536673a25ae sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29288
diff changeset
732 # to verify the certificate and this message would have printed the
3536673a25ae sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29288
diff changeset
733 # fingerprint. So printing the fingerprint here adds little to no
3536673a25ae sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29288
diff changeset
734 # value.
3536673a25ae sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29288
diff changeset
735 ui.warn(_('warning: connection security to %s is disabled per current '
3536673a25ae sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29288
diff changeset
736 'settings; communication is susceptible to eavesdropping '
3536673a25ae sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29288
diff changeset
737 'and tampering\n') % host)
3536673a25ae sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29288
diff changeset
738 return
18879
93b03a222c3e sslutil: try harder to avoid getpeercert problems
Matt Mackall <mpm@selenic.com>
parents: 16391
diff changeset
739
29227
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
740 # If a certificate fingerprint is pinned, use it and only it to
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
741 # validate the remote cert.
29262
dfc4f08aa160 sslutil: calculate host fingerprints from additional algorithms
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29260
diff changeset
742 peerfingerprints = {
29341
0d83ad967bf8 cleanup: replace uses of util.(md5|sha1|sha256|sha512) with hashlib.\1
Augie Fackler <raf@durin42.com>
parents: 29334
diff changeset
743 'sha1': hashlib.sha1(peercert).hexdigest(),
0d83ad967bf8 cleanup: replace uses of util.(md5|sha1|sha256|sha512) with hashlib.\1
Augie Fackler <raf@durin42.com>
parents: 29334
diff changeset
744 'sha256': hashlib.sha256(peercert).hexdigest(),
0d83ad967bf8 cleanup: replace uses of util.(md5|sha1|sha256|sha512) with hashlib.\1
Augie Fackler <raf@durin42.com>
parents: 29334
diff changeset
745 'sha512': hashlib.sha512(peercert).hexdigest(),
29262
dfc4f08aa160 sslutil: calculate host fingerprints from additional algorithms
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29260
diff changeset
746 }
18879
93b03a222c3e sslutil: try harder to avoid getpeercert problems
Matt Mackall <mpm@selenic.com>
parents: 16391
diff changeset
747
29290
01248c37a68e sslutil: print SHA-256 fingerprint by default
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29289
diff changeset
748 def fmtfingerprint(s):
01248c37a68e sslutil: print SHA-256 fingerprint by default
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29289
diff changeset
749 return ':'.join([s[x:x + 2] for x in range(0, len(s), 2)])
01248c37a68e sslutil: print SHA-256 fingerprint by default
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29289
diff changeset
750
01248c37a68e sslutil: print SHA-256 fingerprint by default
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29289
diff changeset
751 nicefingerprint = 'sha256:%s' % fmtfingerprint(peerfingerprints['sha256'])
28850
3819c349b194 sslutil: document and slightly refactor validation logic
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28849
diff changeset
752
29258
6315c1e14f75 sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29253
diff changeset
753 if settings['certfingerprints']:
6315c1e14f75 sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29253
diff changeset
754 for hash, fingerprint in settings['certfingerprints']:
29262
dfc4f08aa160 sslutil: calculate host fingerprints from additional algorithms
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29260
diff changeset
755 if peerfingerprints[hash].lower() == fingerprint:
29291
15e533b7909c sslutil: refactor code for fingerprint matching
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29290
diff changeset
756 ui.debug('%s certificate matched fingerprint %s:%s\n' %
15e533b7909c sslutil: refactor code for fingerprint matching
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29290
diff changeset
757 (host, hash, fmtfingerprint(fingerprint)))
15e533b7909c sslutil: refactor code for fingerprint matching
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29290
diff changeset
758 return
28850
3819c349b194 sslutil: document and slightly refactor validation logic
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28849
diff changeset
759
29293
1b3a0b0c414f sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29292
diff changeset
760 # Pinned fingerprint didn't match. This is a fatal error.
1b3a0b0c414f sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29292
diff changeset
761 if settings['legacyfingerprint']:
1b3a0b0c414f sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29292
diff changeset
762 section = 'hostfingerprint'
1b3a0b0c414f sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29292
diff changeset
763 nice = fmtfingerprint(peerfingerprints['sha1'])
1b3a0b0c414f sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29292
diff changeset
764 else:
1b3a0b0c414f sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29292
diff changeset
765 section = 'hostsecurity'
1b3a0b0c414f sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29292
diff changeset
766 nice = '%s:%s' % (hash, fmtfingerprint(peerfingerprints[hash]))
29291
15e533b7909c sslutil: refactor code for fingerprint matching
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29290
diff changeset
767 raise error.Abort(_('certificate for %s has unexpected '
29293
1b3a0b0c414f sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29292
diff changeset
768 'fingerprint %s') % (host, nice),
29291
15e533b7909c sslutil: refactor code for fingerprint matching
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29290
diff changeset
769 hint=_('check %s configuration') % section)
28850
3819c349b194 sslutil: document and slightly refactor validation logic
Gregory Szorc <gregory.szorc@gmail.com>
parents: 28849
diff changeset
770
29411
e1778b9c8d53 sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29410
diff changeset
771 # Security is enabled but no CAs are loaded. We can't establish trust
e1778b9c8d53 sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29410
diff changeset
772 # for the cert so abort.
29227
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
773 if not sock._hgstate['caloaded']:
29411
e1778b9c8d53 sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29410
diff changeset
774 raise error.Abort(
e1778b9c8d53 sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29410
diff changeset
775 _('unable to verify security of %s (no loaded CA certificates); '
e1778b9c8d53 sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29410
diff changeset
776 'refusing to connect') % host,
e1778b9c8d53 sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29410
diff changeset
777 hint=_('see https://mercurial-scm.org/wiki/SecureConnections for '
e1778b9c8d53 sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29410
diff changeset
778 'how to configure Mercurial to avoid this error or set '
e1778b9c8d53 sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29410
diff changeset
779 'hostsecurity.%s:fingerprints=%s to trust this server') %
e1778b9c8d53 sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29410
diff changeset
780 (host, nicefingerprint))
29113
5b9577edf745 sslutil: use CA loaded state to drive validation logic
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29112
diff changeset
781
29227
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
782 msg = _verifycert(peercert2, host)
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
783 if msg:
dffe78d80a6c sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29226
diff changeset
784 raise error.Abort(_('%s certificate error: %s') % (host, msg),
29292
bc5f55493397 sslutil: make cert fingerprints messages more actionable
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29291
diff changeset
785 hint=_('set hostsecurity.%s:certfingerprints=%s '
bc5f55493397 sslutil: make cert fingerprints messages more actionable
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29291
diff changeset
786 'config setting or use --insecure to connect '
bc5f55493397 sslutil: make cert fingerprints messages more actionable
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29291
diff changeset
787 'insecurely') %
bc5f55493397 sslutil: make cert fingerprints messages more actionable
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29291
diff changeset
788 (host, nicefingerprint))