Mercurial > hg
annotate mercurial/sslutil.py @ 41936:a791623458ef
copies: remove dependency on scmutil by directly using match.exact()
I want to add a dependency from scmutil.copies(), so I need to remove
this dependency first.
Differential Revision: https://phab.mercurial-scm.org/D6118
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Mon, 11 Mar 2019 09:20:26 -0700 |
parents | f07aff7e8b5a |
children | ce5f1232631f |
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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 |
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17 from .i18n import _ |
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18 from . import ( |
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19 error, |
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20 node, |
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21 pycompat, |
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22 util, |
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23 ) |
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24 from .utils import ( |
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25 procutil, |
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26 stringutil, |
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27 ) |
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28 |
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29 # Python 2.7.9+ overhauled the built-in SSL/TLS features of Python. It added |
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30 # support for TLS 1.1, TLS 1.2, SNI, system CA stores, etc. These features are |
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31 # all exposed via the "ssl" module. |
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32 # |
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33 # Depending on the version of Python being used, SSL/TLS support is either |
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34 # modern/secure or legacy/insecure. Many operations in this module have |
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35 # separate code paths depending on support in Python. |
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36 |
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37 configprotocols = { |
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38 'tls1.0', |
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39 'tls1.1', |
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40 'tls1.2', |
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41 } |
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42 |
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43 hassni = getattr(ssl, 'HAS_SNI', False) |
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44 |
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45 # TLS 1.1 and 1.2 may not be supported if the OpenSSL Python is compiled |
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46 # against doesn't support them. |
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47 supportedprotocols = {'tls1.0'} |
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48 if util.safehasattr(ssl, 'PROTOCOL_TLSv1_1'): |
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49 supportedprotocols.add('tls1.1') |
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50 if util.safehasattr(ssl, 'PROTOCOL_TLSv1_2'): |
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51 supportedprotocols.add('tls1.2') |
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52 |
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53 try: |
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54 # ssl.SSLContext was added in 2.7.9 and presence indicates modern |
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55 # SSL/TLS features are available. |
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56 SSLContext = ssl.SSLContext |
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57 modernssl = True |
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58 _canloaddefaultcerts = util.safehasattr(SSLContext, 'load_default_certs') |
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59 except AttributeError: |
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60 modernssl = False |
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61 _canloaddefaultcerts = False |
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62 |
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63 # We implement SSLContext using the interface from the standard library. |
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64 class SSLContext(object): |
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65 def __init__(self, protocol): |
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66 # From the public interface of SSLContext |
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67 self.protocol = protocol |
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68 self.check_hostname = False |
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69 self.options = 0 |
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70 self.verify_mode = ssl.CERT_NONE |
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71 |
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72 # Used by our implementation. |
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73 self._certfile = None |
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74 self._keyfile = None |
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75 self._certpassword = None |
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76 self._cacerts = None |
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77 self._ciphers = None |
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78 |
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79 def load_cert_chain(self, certfile, keyfile=None, password=None): |
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80 self._certfile = certfile |
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81 self._keyfile = keyfile |
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82 self._certpassword = password |
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83 |
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84 def load_default_certs(self, purpose=None): |
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85 pass |
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86 |
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87 def load_verify_locations(self, cafile=None, capath=None, cadata=None): |
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88 if capath: |
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89 raise error.Abort(_('capath not supported')) |
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90 if cadata: |
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91 raise error.Abort(_('cadata not supported')) |
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92 |
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93 self._cacerts = cafile |
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94 |
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95 def set_ciphers(self, ciphers): |
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96 self._ciphers = ciphers |
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97 |
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98 def wrap_socket(self, socket, server_hostname=None, server_side=False): |
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99 # server_hostname is unique to SSLContext.wrap_socket and is used |
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100 # for SNI in that context. So there's nothing for us to do with it |
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101 # in this legacy code since we don't support SNI. |
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102 |
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103 args = { |
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104 r'keyfile': self._keyfile, |
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105 r'certfile': self._certfile, |
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106 r'server_side': server_side, |
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107 r'cert_reqs': self.verify_mode, |
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108 r'ssl_version': self.protocol, |
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109 r'ca_certs': self._cacerts, |
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110 r'ciphers': self._ciphers, |
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111 } |
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112 |
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113 return ssl.wrap_socket(socket, **args) |
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114 |
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115 def _hostsettings(ui, hostname): |
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116 """Obtain security settings for a hostname. |
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117 |
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118 Returns a dict of settings relevant to that hostname. |
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119 """ |
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120 bhostname = pycompat.bytesurl(hostname) |
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121 s = { |
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122 # Whether we should attempt to load default/available CA certs |
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123 # if an explicit ``cafile`` is not defined. |
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124 'allowloaddefaultcerts': True, |
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125 # List of 2-tuple of (hash algorithm, hash). |
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126 'certfingerprints': [], |
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127 # Path to file containing concatenated CA certs. Used by |
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128 # SSLContext.load_verify_locations(). |
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129 'cafile': None, |
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130 # Whether certificate verification should be disabled. |
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131 'disablecertverification': False, |
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132 # Whether the legacy [hostfingerprints] section has data for this host. |
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133 'legacyfingerprint': False, |
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134 # PROTOCOL_* constant to use for SSLContext.__init__. |
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135 'protocol': None, |
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136 # String representation of minimum protocol to be used for UI |
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137 # presentation. |
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138 'protocolui': None, |
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139 # ssl.CERT_* constant used by SSLContext.verify_mode. |
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140 'verifymode': None, |
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141 # Defines extra ssl.OP* bitwise options to set. |
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142 'ctxoptions': None, |
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143 # OpenSSL Cipher List to use (instead of default). |
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144 'ciphers': None, |
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145 } |
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146 |
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147 # Allow minimum TLS protocol to be specified in the config. |
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148 def validateprotocol(protocol, key): |
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149 if protocol not in configprotocols: |
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150 raise error.Abort( |
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151 _('unsupported protocol from hostsecurity.%s: %s') % |
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152 (key, protocol), |
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153 hint=_('valid protocols: %s') % |
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154 ' '.join(sorted(configprotocols))) |
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155 |
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156 # We default to TLS 1.1+ where we can because TLS 1.0 has known |
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157 # vulnerabilities (like BEAST and POODLE). We allow users to downgrade to |
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158 # TLS 1.0+ via config options in case a legacy server is encountered. |
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159 if 'tls1.1' in supportedprotocols: |
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160 defaultprotocol = 'tls1.1' |
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161 else: |
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162 # Let people know they are borderline secure. |
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163 # We don't document this config option because we want people to see |
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164 # the bold warnings on the web site. |
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165 # internal config: hostsecurity.disabletls10warning |
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166 if not ui.configbool('hostsecurity', 'disabletls10warning'): |
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167 ui.warn(_('warning: connecting to %s using legacy security ' |
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168 'technology (TLS 1.0); see ' |
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169 'https://mercurial-scm.org/wiki/SecureConnections for ' |
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170 'more info\n') % bhostname) |
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171 defaultprotocol = 'tls1.0' |
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172 |
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173 key = 'minimumprotocol' |
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174 protocol = ui.config('hostsecurity', key, defaultprotocol) |
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175 validateprotocol(protocol, key) |
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176 |
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177 key = '%s:minimumprotocol' % bhostname |
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178 protocol = ui.config('hostsecurity', key, protocol) |
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179 validateprotocol(protocol, key) |
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180 |
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181 # If --insecure is used, we allow the use of TLS 1.0 despite config options. |
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182 # We always print a "connection security to %s is disabled..." message when |
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183 # --insecure is used. So no need to print anything more here. |
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184 if ui.insecureconnections: |
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185 protocol = 'tls1.0' |
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186 |
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187 s['protocol'], s['ctxoptions'], s['protocolui'] = protocolsettings(protocol) |
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188 |
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189 ciphers = ui.config('hostsecurity', 'ciphers') |
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190 ciphers = ui.config('hostsecurity', '%s:ciphers' % bhostname, ciphers) |
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191 s['ciphers'] = ciphers |
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192 |
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193 # Look for fingerprints in [hostsecurity] section. Value is a list |
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194 # of <alg>:<fingerprint> strings. |
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195 fingerprints = ui.configlist('hostsecurity', '%s:fingerprints' % bhostname) |
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196 for fingerprint in fingerprints: |
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197 if not (fingerprint.startswith(('sha1:', 'sha256:', 'sha512:'))): |
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198 raise error.Abort(_('invalid fingerprint for %s: %s') % ( |
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199 bhostname, fingerprint), |
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200 hint=_('must begin with "sha1:", "sha256:", ' |
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201 'or "sha512:"')) |
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202 |
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203 alg, fingerprint = fingerprint.split(':', 1) |
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204 fingerprint = fingerprint.replace(':', '').lower() |
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205 s['certfingerprints'].append((alg, fingerprint)) |
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206 |
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207 # Fingerprints from [hostfingerprints] are always SHA-1. |
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208 for fingerprint in ui.configlist('hostfingerprints', bhostname): |
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209 fingerprint = fingerprint.replace(':', '').lower() |
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210 s['certfingerprints'].append(('sha1', fingerprint)) |
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211 s['legacyfingerprint'] = True |
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212 |
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213 # If a host cert fingerprint is defined, it is the only thing that |
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214 # matters. No need to validate CA certs. |
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215 if s['certfingerprints']: |
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216 s['verifymode'] = ssl.CERT_NONE |
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217 s['allowloaddefaultcerts'] = False |
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218 |
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219 # If --insecure is used, don't take CAs into consideration. |
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220 elif ui.insecureconnections: |
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221 s['disablecertverification'] = True |
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222 s['verifymode'] = ssl.CERT_NONE |
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223 s['allowloaddefaultcerts'] = False |
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224 |
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225 if ui.configbool('devel', 'disableloaddefaultcerts'): |
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226 s['allowloaddefaultcerts'] = False |
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227 |
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228 # If both fingerprints and a per-host ca file are specified, issue a warning |
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229 # because users should not be surprised about what security is or isn't |
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230 # being performed. |
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231 cafile = ui.config('hostsecurity', '%s:verifycertsfile' % bhostname) |
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232 if s['certfingerprints'] and cafile: |
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233 ui.warn(_('(hostsecurity.%s:verifycertsfile ignored when host ' |
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234 'fingerprints defined; using host fingerprints for ' |
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235 'verification)\n') % bhostname) |
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236 |
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237 # Try to hook up CA certificate validation unless something above |
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238 # makes it not necessary. |
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239 if s['verifymode'] is None: |
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240 # Look at per-host ca file first. |
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241 if cafile: |
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242 cafile = util.expandpath(cafile) |
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243 if not os.path.exists(cafile): |
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244 raise error.Abort(_('path specified by %s does not exist: %s') % |
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245 ('hostsecurity.%s:verifycertsfile' % ( |
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246 bhostname,), cafile)) |
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247 s['cafile'] = cafile |
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248 else: |
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249 # Find global certificates file in config. |
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250 cafile = ui.config('web', 'cacerts') |
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251 |
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252 if cafile: |
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253 cafile = util.expandpath(cafile) |
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254 if not os.path.exists(cafile): |
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255 raise error.Abort(_('could not find web.cacerts: %s') % |
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256 cafile) |
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257 elif s['allowloaddefaultcerts']: |
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258 # CAs not defined in config. Try to find system bundles. |
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259 cafile = _defaultcacerts(ui) |
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260 if cafile: |
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261 ui.debug('using %s for CA file\n' % cafile) |
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262 |
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263 s['cafile'] = cafile |
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264 |
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265 # Require certificate validation if CA certs are being loaded and |
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266 # verification hasn't been disabled above. |
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267 if cafile or (_canloaddefaultcerts and s['allowloaddefaultcerts']): |
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268 s['verifymode'] = ssl.CERT_REQUIRED |
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269 else: |
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270 # At this point we don't have a fingerprint, aren't being |
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271 # explicitly insecure, and can't load CA certs. Connecting |
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272 # is insecure. We allow the connection and abort during |
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273 # validation (once we have the fingerprint to print to the |
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274 # user). |
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275 s['verifymode'] = ssl.CERT_NONE |
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276 |
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277 assert s['protocol'] is not None |
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278 assert s['ctxoptions'] is not None |
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279 assert s['verifymode'] is not None |
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280 |
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281 return s |
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282 |
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283 def protocolsettings(protocol): |
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284 """Resolve the protocol for a config value. |
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285 |
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286 Returns a 3-tuple of (protocol, options, ui value) where the first |
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287 2 items are values used by SSLContext and the last is a string value |
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288 of the ``minimumprotocol`` config option equivalent. |
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289 """ |
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290 if protocol not in configprotocols: |
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291 raise ValueError('protocol value not supported: %s' % protocol) |
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292 |
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293 # Despite its name, PROTOCOL_SSLv23 selects the highest protocol |
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294 # that both ends support, including TLS protocols. On legacy stacks, |
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295 # the highest it likely goes is TLS 1.0. On modern stacks, it can |
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296 # support TLS 1.2. |
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297 # |
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298 # The PROTOCOL_TLSv* constants select a specific TLS version |
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299 # only (as opposed to multiple versions). So the method for |
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300 # supporting multiple TLS versions is to use PROTOCOL_SSLv23 and |
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301 # disable protocols via SSLContext.options and OP_NO_* constants. |
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302 # However, SSLContext.options doesn't work unless we have the |
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303 # full/real SSLContext available to us. |
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304 if supportedprotocols == {'tls1.0'}: |
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305 if protocol != 'tls1.0': |
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306 raise error.Abort(_('current Python does not support protocol ' |
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307 'setting %s') % protocol, |
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308 hint=_('upgrade Python or disable setting since ' |
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309 'only TLS 1.0 is supported')) |
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310 |
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311 return ssl.PROTOCOL_TLSv1, 0, 'tls1.0' |
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312 |
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313 # WARNING: returned options don't work unless the modern ssl module |
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314 # is available. Be careful when adding options here. |
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315 |
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316 # SSLv2 and SSLv3 are broken. We ban them outright. |
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317 options = ssl.OP_NO_SSLv2 | ssl.OP_NO_SSLv3 |
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318 |
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319 if protocol == 'tls1.0': |
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320 # Defaults above are to use TLS 1.0+ |
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321 pass |
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322 elif protocol == 'tls1.1': |
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323 options |= ssl.OP_NO_TLSv1 |
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324 elif protocol == 'tls1.2': |
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325 options |= ssl.OP_NO_TLSv1 | ssl.OP_NO_TLSv1_1 |
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326 else: |
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327 raise error.Abort(_('this should not happen')) |
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328 |
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329 # Prevent CRIME. |
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330 # There is no guarantee this attribute is defined on the module. |
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331 options |= getattr(ssl, 'OP_NO_COMPRESSION', 0) |
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332 |
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333 return ssl.PROTOCOL_SSLv23, options, protocol |
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334 |
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335 def wrapsocket(sock, keyfile, certfile, ui, serverhostname=None): |
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336 """Add SSL/TLS to a socket. |
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337 |
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338 This is a glorified wrapper for ``ssl.wrap_socket()``. It makes sane |
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339 choices based on what security options are available. |
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340 |
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341 In addition to the arguments supported by ``ssl.wrap_socket``, we allow |
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342 the following additional arguments: |
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343 |
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344 * serverhostname - The expected hostname of the remote server. If the |
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345 server (and client) support SNI, this tells the server which certificate |
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346 to use. |
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347 """ |
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348 if not serverhostname: |
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349 raise error.Abort(_('serverhostname argument is required')) |
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350 |
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351 for f in (keyfile, certfile): |
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352 if f and not os.path.exists(f): |
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353 raise error.Abort( |
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354 _('certificate file (%s) does not exist; cannot connect to %s') |
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355 % (f, pycompat.bytesurl(serverhostname)), |
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356 hint=_('restore missing file or fix references ' |
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357 'in Mercurial config')) |
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358 |
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359 settings = _hostsettings(ui, serverhostname) |
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360 |
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361 # We can't use ssl.create_default_context() because it calls |
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362 # load_default_certs() unless CA arguments are passed to it. We want to |
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363 # have explicit control over CA loading because implicitly loading |
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364 # CAs may undermine the user's intent. For example, a user may define a CA |
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365 # bundle with a specific CA cert removed. If the system/default CA bundle |
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366 # is loaded and contains that removed CA, you've just undone the user's |
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367 # choice. |
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368 sslcontext = SSLContext(settings['protocol']) |
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369 |
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370 # This is a no-op unless using modern ssl. |
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371 sslcontext.options |= settings['ctxoptions'] |
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372 |
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373 # This still works on our fake SSLContext. |
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374 sslcontext.verify_mode = settings['verifymode'] |
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375 |
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376 if settings['ciphers']: |
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377 try: |
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378 sslcontext.set_ciphers(pycompat.sysstr(settings['ciphers'])) |
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379 except ssl.SSLError as e: |
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380 raise error.Abort( |
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381 _('could not set ciphers: %s') |
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382 % stringutil.forcebytestr(e.args[0]), |
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383 hint=_('change cipher string (%s) in config') % |
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384 settings['ciphers']) |
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385 |
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386 if certfile is not None: |
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387 def password(): |
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388 f = keyfile or certfile |
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389 return ui.getpass(_('passphrase for %s: ') % f, '') |
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390 sslcontext.load_cert_chain(certfile, keyfile, password) |
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391 |
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392 if settings['cafile'] is not None: |
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393 try: |
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394 sslcontext.load_verify_locations(cafile=settings['cafile']) |
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395 except ssl.SSLError as e: |
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396 if len(e.args) == 1: # pypy has different SSLError args |
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397 msg = e.args[0] |
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398 else: |
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399 msg = e.args[1] |
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400 raise error.Abort(_('error loading CA file %s: %s') % ( |
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401 settings['cafile'], stringutil.forcebytestr(msg)), |
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402 hint=_('file is empty or malformed?')) |
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403 caloaded = True |
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404 elif settings['allowloaddefaultcerts']: |
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405 # This is a no-op on old Python. |
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406 sslcontext.load_default_certs() |
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407 caloaded = True |
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408 else: |
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409 caloaded = False |
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410 |
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411 try: |
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412 sslsocket = sslcontext.wrap_socket(sock, server_hostname=serverhostname) |
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413 except ssl.SSLError as e: |
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414 # If we're doing certificate verification and no CA certs are loaded, |
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415 # that is almost certainly the reason why verification failed. Provide |
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416 # a hint to the user. |
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417 # Only modern ssl module exposes SSLContext.get_ca_certs() so we can |
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418 # only show this warning if modern ssl is available. |
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419 # The exception handler is here to handle bugs around cert attributes: |
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420 # https://bugs.python.org/issue20916#msg213479. (See issues5313.) |
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421 # When the main 20916 bug occurs, 'sslcontext.get_ca_certs()' is a |
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422 # non-empty list, but the following conditional is otherwise True. |
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423 try: |
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424 if (caloaded and settings['verifymode'] == ssl.CERT_REQUIRED and |
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425 modernssl and not sslcontext.get_ca_certs()): |
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426 ui.warn(_('(an attempt was made to load CA certificates but ' |
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427 'none were loaded; see ' |
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428 'https://mercurial-scm.org/wiki/SecureConnections ' |
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429 'for how to configure Mercurial to avoid this ' |
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430 'error)\n')) |
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431 except ssl.SSLError: |
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432 pass |
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433 |
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434 # Try to print more helpful error messages for known failures. |
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435 if util.safehasattr(e, 'reason'): |
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436 # This error occurs when the client and server don't share a |
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437 # common/supported SSL/TLS protocol. We've disabled SSLv2 and SSLv3 |
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438 # outright. Hopefully the reason for this error is that we require |
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439 # TLS 1.1+ and the server only supports TLS 1.0. Whatever the |
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440 # reason, try to emit an actionable warning. |
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441 if e.reason == r'UNSUPPORTED_PROTOCOL': |
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442 # We attempted TLS 1.0+. |
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443 if settings['protocolui'] == 'tls1.0': |
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444 # We support more than just TLS 1.0+. If this happens, |
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445 # the likely scenario is either the client or the server |
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446 # is really old. (e.g. server doesn't support TLS 1.0+ or |
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447 # client doesn't support modern TLS versions introduced |
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448 # several years from when this comment was written). |
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449 if supportedprotocols != {'tls1.0'}: |
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450 ui.warn(_( |
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451 '(could not communicate with %s using security ' |
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452 'protocols %s; if you are using a modern Mercurial ' |
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453 'version, consider contacting the operator of this ' |
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454 'server; see ' |
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455 'https://mercurial-scm.org/wiki/SecureConnections ' |
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456 'for more info)\n') % ( |
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457 pycompat.bytesurl(serverhostname), |
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458 ', '.join(sorted(supportedprotocols)))) |
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459 else: |
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460 ui.warn(_( |
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461 '(could not communicate with %s using TLS 1.0; the ' |
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462 'likely cause of this is the server no longer ' |
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463 'supports TLS 1.0 because it has known security ' |
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464 'vulnerabilities; see ' |
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465 'https://mercurial-scm.org/wiki/SecureConnections ' |
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466 'for more info)\n') % |
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467 pycompat.bytesurl(serverhostname)) |
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468 else: |
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469 # We attempted TLS 1.1+. We can only get here if the client |
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470 # supports the configured protocol. So the likely reason is |
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471 # the client wants better security than the server can |
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472 # offer. |
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473 ui.warn(_( |
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474 '(could not negotiate a common security protocol (%s+) ' |
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475 'with %s; the likely cause is Mercurial is configured ' |
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476 'to be more secure than the server can support)\n') % ( |
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477 settings['protocolui'], |
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478 pycompat.bytesurl(serverhostname))) |
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479 ui.warn(_('(consider contacting the operator of this ' |
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480 'server and ask them to support modern TLS ' |
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481 'protocol versions; or, set ' |
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482 'hostsecurity.%s:minimumprotocol=tls1.0 to allow ' |
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483 'use of legacy, less secure protocols when ' |
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484 'communicating with this server)\n') % |
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485 pycompat.bytesurl(serverhostname)) |
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486 ui.warn(_( |
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487 '(see https://mercurial-scm.org/wiki/SecureConnections ' |
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488 'for more info)\n')) |
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489 |
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490 elif (e.reason == r'CERTIFICATE_VERIFY_FAILED' and |
34645 | 491 pycompat.iswindows): |
33494
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492 |
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493 ui.warn(_('(the full certificate chain may not be available ' |
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494 'locally; see "hg help debugssl")\n')) |
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495 raise |
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496 |
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497 # check if wrap_socket failed silently because socket had been |
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498 # closed |
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499 # - see http://bugs.python.org/issue13721 |
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500 if not sslsocket.cipher(): |
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501 raise error.Abort(_('ssl connection failed')) |
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502 |
29225
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503 sslsocket._hgstate = { |
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504 'caloaded': caloaded, |
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505 'hostname': serverhostname, |
29259
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506 'settings': settings, |
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507 'ui': ui, |
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508 } |
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509 |
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510 return sslsocket |
14204
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diff
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511 |
29554
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512 def wrapserversocket(sock, ui, certfile=None, keyfile=None, cafile=None, |
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513 requireclientcert=False): |
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514 """Wrap a socket for use by servers. |
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515 |
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516 ``certfile`` and ``keyfile`` specify the files containing the certificate's |
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517 public and private keys, respectively. Both keys can be defined in the same |
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518 file via ``certfile`` (the private key must come first in the file). |
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519 |
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520 ``cafile`` defines the path to certificate authorities. |
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521 |
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522 ``requireclientcert`` specifies whether to require client certificates. |
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523 |
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524 Typically ``cafile`` is only defined if ``requireclientcert`` is true. |
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525 """ |
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526 # This function is not used much by core Mercurial, so the error messaging |
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527 # doesn't have to be as detailed as for wrapsocket(). |
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528 for f in (certfile, keyfile, cafile): |
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529 if f and not os.path.exists(f): |
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530 raise error.Abort(_('referenced certificate file (%s) does not ' |
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531 'exist') % f) |
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532 |
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533 protocol, options, _protocolui = protocolsettings('tls1.0') |
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534 |
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535 # This config option is intended for use in tests only. It is a giant |
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536 # footgun to kill security. Don't define it. |
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537 exactprotocol = ui.config('devel', 'serverexactprotocol') |
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538 if exactprotocol == 'tls1.0': |
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539 protocol = ssl.PROTOCOL_TLSv1 |
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|
540 elif exactprotocol == 'tls1.1': |
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541 if 'tls1.1' not in supportedprotocols: |
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542 raise error.Abort(_('TLS 1.1 not supported by this Python')) |
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543 protocol = ssl.PROTOCOL_TLSv1_1 |
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544 elif exactprotocol == 'tls1.2': |
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545 if 'tls1.2' not in supportedprotocols: |
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546 raise error.Abort(_('TLS 1.2 not supported by this Python')) |
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547 protocol = ssl.PROTOCOL_TLSv1_2 |
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548 elif exactprotocol: |
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549 raise error.Abort(_('invalid value for serverexactprotocol: %s') % |
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|
550 exactprotocol) |
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551 |
29554
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552 if modernssl: |
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|
553 # We /could/ use create_default_context() here since it doesn't load |
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554 # CAs when configured for client auth. However, it is hard-coded to |
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555 # use ssl.PROTOCOL_SSLv23 which may not be appropriate here. |
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556 sslcontext = SSLContext(protocol) |
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diff
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|
557 sslcontext.options |= options |
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diff
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|
558 |
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559 # Improve forward secrecy. |
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560 sslcontext.options |= getattr(ssl, 'OP_SINGLE_DH_USE', 0) |
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561 sslcontext.options |= getattr(ssl, 'OP_SINGLE_ECDH_USE', 0) |
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562 |
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563 # Use the list of more secure ciphers if found in the ssl module. |
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564 if util.safehasattr(ssl, '_RESTRICTED_SERVER_CIPHERS'): |
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565 sslcontext.options |= getattr(ssl, 'OP_CIPHER_SERVER_PREFERENCE', 0) |
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566 sslcontext.set_ciphers(ssl._RESTRICTED_SERVER_CIPHERS) |
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567 else: |
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568 sslcontext = SSLContext(ssl.PROTOCOL_TLSv1) |
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569 |
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570 if requireclientcert: |
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571 sslcontext.verify_mode = ssl.CERT_REQUIRED |
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572 else: |
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573 sslcontext.verify_mode = ssl.CERT_NONE |
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574 |
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575 if certfile or keyfile: |
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576 sslcontext.load_cert_chain(certfile=certfile, keyfile=keyfile) |
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577 |
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578 if cafile: |
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579 sslcontext.load_verify_locations(cafile=cafile) |
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580 |
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581 return sslcontext.wrap_socket(sock, server_side=True) |
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582 |
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583 class wildcarderror(Exception): |
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584 """Represents an error parsing wildcards in DNS name.""" |
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585 |
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586 def _dnsnamematch(dn, hostname, maxwildcards=1): |
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587 """Match DNS names according RFC 6125 section 6.4.3. |
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588 |
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589 This code is effectively copied from CPython's ssl._dnsname_match. |
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590 |
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591 Returns a bool indicating whether the expected hostname matches |
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592 the value in ``dn``. |
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593 """ |
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594 pats = [] |
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595 if not dn: |
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596 return False |
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597 dn = pycompat.bytesurl(dn) |
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598 hostname = pycompat.bytesurl(hostname) |
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599 |
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600 pieces = dn.split('.') |
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601 leftmost = pieces[0] |
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602 remainder = pieces[1:] |
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603 wildcards = leftmost.count('*') |
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604 if wildcards > maxwildcards: |
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605 raise wildcarderror( |
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606 _('too many wildcards in certificate DNS name: %s') % dn) |
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607 |
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608 # speed up common case w/o wildcards |
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609 if not wildcards: |
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610 return dn.lower() == hostname.lower() |
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611 |
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612 # RFC 6125, section 6.4.3, subitem 1. |
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613 # The client SHOULD NOT attempt to match a presented identifier in which |
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614 # the wildcard character comprises a label other than the left-most label. |
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615 if leftmost == '*': |
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616 # When '*' is a fragment by itself, it matches a non-empty dotless |
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617 # fragment. |
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618 pats.append('[^.]+') |
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619 elif leftmost.startswith('xn--') or hostname.startswith('xn--'): |
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620 # RFC 6125, section 6.4.3, subitem 3. |
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621 # The client SHOULD NOT attempt to match a presented identifier |
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622 # where the wildcard character is embedded within an A-label or |
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623 # U-label of an internationalized domain name. |
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624 pats.append(stringutil.reescape(leftmost)) |
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625 else: |
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626 # Otherwise, '*' matches any dotless string, e.g. www* |
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627 pats.append(stringutil.reescape(leftmost).replace(br'\*', '[^.]*')) |
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628 |
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629 # add the remaining fragments, ignore any wildcards |
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630 for frag in remainder: |
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631 pats.append(stringutil.reescape(frag)) |
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|
632 |
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|
633 pat = re.compile(br'\A' + br'\.'.join(pats) + br'\Z', re.IGNORECASE) |
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634 return pat.match(hostname) is not None |
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635 |
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636 def _verifycert(cert, hostname): |
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637 '''Verify that cert (in socket.getpeercert() format) matches hostname. |
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638 CRLs is not handled. |
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639 |
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640 Returns error message if any problems are found and None on success. |
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641 ''' |
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|
642 if not cert: |
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643 return _('no certificate received') |
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644 |
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645 dnsnames = [] |
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646 san = cert.get(r'subjectAltName', []) |
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647 for key, value in san: |
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648 if key == r'DNS': |
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649 try: |
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650 if _dnsnamematch(value, hostname): |
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651 return |
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652 except wildcarderror as e: |
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653 return stringutil.forcebytestr(e.args[0]) |
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654 |
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655 dnsnames.append(value) |
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656 |
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657 if not dnsnames: |
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658 # The subject is only checked when there is no DNS in subjectAltName. |
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659 for sub in cert.get(r'subject', []): |
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660 for key, value in sub: |
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661 # According to RFC 2818 the most specific Common Name must |
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662 # be used. |
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|
663 if key == r'commonName': |
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|
664 # 'subject' entries are unicode. |
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665 try: |
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666 value = value.encode('ascii') |
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667 except UnicodeEncodeError: |
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668 return _('IDN in certificate not supported') |
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669 |
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670 try: |
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671 if _dnsnamematch(value, hostname): |
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672 return |
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673 except wildcarderror as e: |
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674 return stringutil.forcebytestr(e.args[0]) |
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675 |
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676 dnsnames.append(value) |
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677 |
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678 dnsnames = [pycompat.bytesurl(d) for d in dnsnames] |
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679 if len(dnsnames) > 1: |
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680 return _('certificate is for %s') % ', '.join(dnsnames) |
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681 elif len(dnsnames) == 1: |
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682 return _('certificate is for %s') % dnsnames[0] |
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683 else: |
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684 return _('no commonName or subjectAltName found in certificate') |
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685 |
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686 def _plainapplepython(): |
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687 """return true if this seems to be a pure Apple Python that |
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688 * is unfrozen and presumably has the whole mercurial module in the file |
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689 system |
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690 * presumably is an Apple Python that uses Apple OpenSSL which has patches |
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691 for using system certificate store CAs in addition to the provided |
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692 cacerts file |
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693 """ |
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694 if (not pycompat.isdarwin or procutil.mainfrozen() or |
34647 | 695 not pycompat.sysexecutable): |
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696 return False |
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697 exe = os.path.realpath(pycompat.sysexecutable).lower() |
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698 return (exe.startswith('/usr/bin/python') or |
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699 exe.startswith('/system/library/frameworks/python.framework/')) |
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700 |
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701 _systemcacertpaths = [ |
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702 # RHEL, CentOS, and Fedora |
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703 '/etc/pki/tls/certs/ca-bundle.trust.crt', |
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704 # Debian, Ubuntu, Gentoo |
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705 '/etc/ssl/certs/ca-certificates.crt', |
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706 ] |
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707 |
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708 def _defaultcacerts(ui): |
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709 """return path to default CA certificates or None. |
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710 |
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711 It is assumed this function is called when the returned certificates |
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712 file will actually be used to validate connections. Therefore this |
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713 function may print warnings or debug messages assuming this usage. |
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714 |
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715 We don't print a message when the Python is able to load default |
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716 CA certs because this scenario is detected at socket connect time. |
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717 """ |
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718 # The "certifi" Python package provides certificates. If it is installed |
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719 # and usable, assume the user intends it to be used and use it. |
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720 try: |
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721 import certifi |
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722 certs = certifi.where() |
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723 if os.path.exists(certs): |
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724 ui.debug('using ca certificates from certifi\n') |
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725 return certs |
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726 except (ImportError, AttributeError): |
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727 pass |
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728 |
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729 # On Windows, only the modern ssl module is capable of loading the system |
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730 # CA certificates. If we're not capable of doing that, emit a warning |
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731 # because we'll get a certificate verification error later and the lack |
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732 # of loaded CA certificates will be the reason why. |
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|
733 # Assertion: this code is only called if certificates are being verified. |
34645 | 734 if pycompat.iswindows: |
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735 if not _canloaddefaultcerts: |
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736 ui.warn(_('(unable to load Windows CA certificates; see ' |
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737 'https://mercurial-scm.org/wiki/SecureConnections for ' |
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738 'how to configure Mercurial to avoid this message)\n')) |
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739 |
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740 return None |
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741 |
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742 # Apple's OpenSSL has patches that allow a specially constructed certificate |
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743 # to load the system CA store. If we're running on Apple Python, use this |
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744 # trick. |
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745 if _plainapplepython(): |
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746 dummycert = os.path.join( |
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747 os.path.dirname(pycompat.fsencode(__file__)), 'dummycert.pem') |
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748 if os.path.exists(dummycert): |
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749 return dummycert |
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750 |
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751 # The Apple OpenSSL trick isn't available to us. If Python isn't able to |
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752 # load system certs, we're out of luck. |
34647 | 753 if pycompat.isdarwin: |
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754 # FUTURE Consider looking for Homebrew or MacPorts installed certs |
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755 # files. Also consider exporting the keychain certs to a file during |
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756 # Mercurial install. |
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757 if not _canloaddefaultcerts: |
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758 ui.warn(_('(unable to load CA certificates; see ' |
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759 'https://mercurial-scm.org/wiki/SecureConnections for ' |
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760 'how to configure Mercurial to avoid this message)\n')) |
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761 return None |
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762 |
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763 # / is writable on Windows. Out of an abundance of caution make sure |
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764 # we're not on Windows because paths from _systemcacerts could be installed |
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|
765 # by non-admin users. |
34645 | 766 assert not pycompat.iswindows |
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767 |
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768 # Try to find CA certificates in well-known locations. We print a warning |
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769 # when using a found file because we don't want too much silent magic |
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770 # for security settings. The expectation is that proper Mercurial |
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771 # installs will have the CA certs path defined at install time and the |
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772 # installer/packager will make an appropriate decision on the user's |
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773 # behalf. We only get here and perform this setting as a feature of |
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774 # last resort. |
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775 if not _canloaddefaultcerts: |
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776 for path in _systemcacertpaths: |
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777 if os.path.isfile(path): |
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778 ui.warn(_('(using CA certificates from %s; if you see this ' |
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779 'message, your Mercurial install is not properly ' |
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780 'configured; see ' |
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781 'https://mercurial-scm.org/wiki/SecureConnections ' |
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782 'for how to configure Mercurial to avoid this ' |
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783 'message)\n') % path) |
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diff
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|
784 return path |
14204
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Augie Fackler <durin42@gmail.com>
parents:
diff
changeset
|
785 |
29500
4b16a5bd9948
sslutil: try to find CA certficates in well-known locations
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parents:
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diff
changeset
|
786 ui.warn(_('(unable to load CA certificates; see ' |
4b16a5bd9948
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parents:
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diff
changeset
|
787 'https://mercurial-scm.org/wiki/SecureConnections for ' |
4b16a5bd9948
sslutil: try to find CA certficates in well-known locations
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parents:
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diff
changeset
|
788 'how to configure Mercurial to avoid this message)\n')) |
14204
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sslutil: extracted ssl methods from httpsconnection in url.py
Augie Fackler <durin42@gmail.com>
parents:
diff
changeset
|
789 |
29107
c8fbfb9163ce
sslutil: move code examining _canloaddefaultcerts out of _defaultcacerts
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29106
diff
changeset
|
790 return None |
24288
922e087ba158
ssl: extract function that returns dummycert path on Apple python
Yuya Nishihara <yuya@tcha.org>
parents:
23851
diff
changeset
|
791 |
29286
a05a91a3f120
sslutil: remove "strict" argument from validatesocket()
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29268
diff
changeset
|
792 def validatesocket(sock): |
30332
318a24b52eeb
spelling: fixes of non-dictionary words
Mads Kiilerich <madski@unity3d.com>
parents:
30228
diff
changeset
|
793 """Validate a socket meets security requirements. |
18879
93b03a222c3e
sslutil: try harder to avoid getpeercert problems
Matt Mackall <mpm@selenic.com>
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diff
changeset
|
794 |
29227
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
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parents:
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diff
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|
795 The passed socket must have been created with ``wrapsocket()``. |
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
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diff
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|
796 """ |
36745
424994a0adfd
sslutil: lots of unicode/bytes cleanup
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parents:
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diff
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|
797 shost = sock._hgstate['hostname'] |
424994a0adfd
sslutil: lots of unicode/bytes cleanup
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parents:
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diff
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|
798 host = pycompat.bytesurl(shost) |
29227
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
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parents:
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diff
changeset
|
799 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
|
800 settings = sock._hgstate['settings'] |
18879
93b03a222c3e
sslutil: try harder to avoid getpeercert problems
Matt Mackall <mpm@selenic.com>
parents:
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diff
changeset
|
801 |
29227
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
802 try: |
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29226
diff
changeset
|
803 peercert = sock.getpeercert(True) |
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
804 peercert2 = sock.getpeercert() |
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
805 except AttributeError: |
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29226
diff
changeset
|
806 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
|
807 |
29227
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
808 if not peercert: |
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
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diff
changeset
|
809 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
|
810 'no certificate received') % host) |
18879
93b03a222c3e
sslutil: try harder to avoid getpeercert problems
Matt Mackall <mpm@selenic.com>
parents:
16391
diff
changeset
|
811 |
29289
3536673a25ae
sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29288
diff
changeset
|
812 if settings['disablecertverification']: |
3536673a25ae
sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29288
diff
changeset
|
813 # 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
|
814 # 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
|
815 # 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
|
816 # 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
|
817 # 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
|
818 # value. |
3536673a25ae
sslutil: move and change warning when cert verification is disabled
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29288
diff
changeset
|
819 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
|
820 '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
|
821 '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
|
822 return |
18879
93b03a222c3e
sslutil: try harder to avoid getpeercert problems
Matt Mackall <mpm@selenic.com>
parents:
16391
diff
changeset
|
823 |
29227
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
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parents:
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diff
changeset
|
824 # 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
|
825 # validate the remote cert. |
29262
dfc4f08aa160
sslutil: calculate host fingerprints from additional algorithms
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29260
diff
changeset
|
826 peerfingerprints = { |
35582
72b91f905065
py3: use node.hex(h.digest()) instead of h.hexdigest()
Pulkit Goyal <7895pulkit@gmail.com>
parents:
35369
diff
changeset
|
827 'sha1': node.hex(hashlib.sha1(peercert).digest()), |
72b91f905065
py3: use node.hex(h.digest()) instead of h.hexdigest()
Pulkit Goyal <7895pulkit@gmail.com>
parents:
35369
diff
changeset
|
828 'sha256': node.hex(hashlib.sha256(peercert).digest()), |
72b91f905065
py3: use node.hex(h.digest()) instead of h.hexdigest()
Pulkit Goyal <7895pulkit@gmail.com>
parents:
35369
diff
changeset
|
829 'sha512': node.hex(hashlib.sha512(peercert).digest()), |
29262
dfc4f08aa160
sslutil: calculate host fingerprints from additional algorithms
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29260
diff
changeset
|
830 } |
18879
93b03a222c3e
sslutil: try harder to avoid getpeercert problems
Matt Mackall <mpm@selenic.com>
parents:
16391
diff
changeset
|
831 |
29290
01248c37a68e
sslutil: print SHA-256 fingerprint by default
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29289
diff
changeset
|
832 def fmtfingerprint(s): |
01248c37a68e
sslutil: print SHA-256 fingerprint by default
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29289
diff
changeset
|
833 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
|
834 |
01248c37a68e
sslutil: print SHA-256 fingerprint by default
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29289
diff
changeset
|
835 nicefingerprint = 'sha256:%s' % fmtfingerprint(peerfingerprints['sha256']) |
28850
3819c349b194
sslutil: document and slightly refactor validation logic
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parents:
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diff
changeset
|
836 |
29258
6315c1e14f75
sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29253
diff
changeset
|
837 if settings['certfingerprints']: |
6315c1e14f75
sslutil: introduce a function for determining host-specific settings
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29253
diff
changeset
|
838 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
|
839 if peerfingerprints[hash].lower() == fingerprint: |
29291
15e533b7909c
sslutil: refactor code for fingerprint matching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29290
diff
changeset
|
840 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
|
841 (host, hash, fmtfingerprint(fingerprint))) |
31290
f819aa9dbbf9
sslutil: issue warning when [hostfingerprint] is used
Gregory Szorc <gregory.szorc@gmail.com>
parents:
31074
diff
changeset
|
842 if settings['legacyfingerprint']: |
f819aa9dbbf9
sslutil: issue warning when [hostfingerprint] is used
Gregory Szorc <gregory.szorc@gmail.com>
parents:
31074
diff
changeset
|
843 ui.warn(_('(SHA-1 fingerprint for %s found in legacy ' |
f819aa9dbbf9
sslutil: issue warning when [hostfingerprint] is used
Gregory Szorc <gregory.szorc@gmail.com>
parents:
31074
diff
changeset
|
844 '[hostfingerprints] section; ' |
32273
2e455cbeac50
sslutil: tweak the legacy [hostfingerprints] warning message
Gregory Szorc <gregory.szorc@gmail.com>
parents:
32247
diff
changeset
|
845 'if you trust this fingerprint, remove the old ' |
2e455cbeac50
sslutil: tweak the legacy [hostfingerprints] warning message
Gregory Szorc <gregory.szorc@gmail.com>
parents:
32247
diff
changeset
|
846 'SHA-1 fingerprint from [hostfingerprints] and ' |
2e455cbeac50
sslutil: tweak the legacy [hostfingerprints] warning message
Gregory Szorc <gregory.szorc@gmail.com>
parents:
32247
diff
changeset
|
847 'add the following entry to the new ' |
2e455cbeac50
sslutil: tweak the legacy [hostfingerprints] warning message
Gregory Szorc <gregory.szorc@gmail.com>
parents:
32247
diff
changeset
|
848 '[hostsecurity] section: %s:fingerprints=%s)\n') % |
2e455cbeac50
sslutil: tweak the legacy [hostfingerprints] warning message
Gregory Szorc <gregory.szorc@gmail.com>
parents:
32247
diff
changeset
|
849 (host, host, nicefingerprint)) |
29291
15e533b7909c
sslutil: refactor code for fingerprint matching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29290
diff
changeset
|
850 return |
28850
3819c349b194
sslutil: document and slightly refactor validation logic
Gregory Szorc <gregory.szorc@gmail.com>
parents:
28849
diff
changeset
|
851 |
29293
1b3a0b0c414f
sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29292
diff
changeset
|
852 # 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
|
853 if settings['legacyfingerprint']: |
1b3a0b0c414f
sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29292
diff
changeset
|
854 section = 'hostfingerprint' |
1b3a0b0c414f
sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29292
diff
changeset
|
855 nice = fmtfingerprint(peerfingerprints['sha1']) |
1b3a0b0c414f
sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29292
diff
changeset
|
856 else: |
1b3a0b0c414f
sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29292
diff
changeset
|
857 section = 'hostsecurity' |
1b3a0b0c414f
sslutil: print the fingerprint from the last hash used
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29292
diff
changeset
|
858 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
|
859 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
|
860 'fingerprint %s') % (host, nice), |
29291
15e533b7909c
sslutil: refactor code for fingerprint matching
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29290
diff
changeset
|
861 hint=_('check %s configuration') % section) |
28850
3819c349b194
sslutil: document and slightly refactor validation logic
Gregory Szorc <gregory.szorc@gmail.com>
parents:
28849
diff
changeset
|
862 |
29411
e1778b9c8d53
sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29410
diff
changeset
|
863 # 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
|
864 # 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
|
865 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
|
866 raise error.Abort( |
e1778b9c8d53
sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29410
diff
changeset
|
867 _('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
|
868 'refusing to connect') % host, |
e1778b9c8d53
sslutil: abort when unable to verify peer connection (BC)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29410
diff
changeset
|
869 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
|
870 '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
|
871 '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
|
872 (host, nicefingerprint)) |
29113
5b9577edf745
sslutil: use CA loaded state to drive validation logic
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29112
diff
changeset
|
873 |
36745
424994a0adfd
sslutil: lots of unicode/bytes cleanup
Augie Fackler <augie@google.com>
parents:
35582
diff
changeset
|
874 msg = _verifycert(peercert2, shost) |
29227
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29226
diff
changeset
|
875 if msg: |
dffe78d80a6c
sslutil: convert socket validation from a class to a function (API)
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29226
diff
changeset
|
876 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
|
877 hint=_('set hostsecurity.%s:certfingerprints=%s ' |
bc5f55493397
sslutil: make cert fingerprints messages more actionable
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29291
diff
changeset
|
878 '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
|
879 'insecurely') % |
bc5f55493397
sslutil: make cert fingerprints messages more actionable
Gregory Szorc <gregory.szorc@gmail.com>
parents:
29291
diff
changeset
|
880 (host, nicefingerprint)) |