Mercurial > hg
annotate mercurial/sslutil.py @ 20835:0e8417131a29
util: add the code path to "cachefunc()" for the function taking no arguments
Before this patch, "util.cachefunc()" caches the value returned by the
specified function into dictionary "cache", even if the specified
function takes no arguments.
In such case, "cache" has at most one entry, and distinction between
entries in "cache" is meaningless.
This patch adds the code path to "cachefunc()" for the function taking
no arguments for efficiency: to store only one cached value, using
list "cache" is a little faster than using dictionary "cache".
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
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date | Sat, 15 Feb 2014 19:52:26 +0900 |
parents | 3b82d412e9e8 |
children | a00a7951b20c |
rev | line source |
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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 import os |
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10 |
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11 from mercurial import util |
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12 from mercurial.i18n import _ |
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13 try: |
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14 # avoid using deprecated/broken FakeSocket in python 2.6 |
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15 import ssl |
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16 CERT_REQUIRED = ssl.CERT_REQUIRED |
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17 PROTOCOL_SSLv23 = ssl.PROTOCOL_SSLv23 |
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18 PROTOCOL_TLSv1 = ssl.PROTOCOL_TLSv1 |
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19 def ssl_wrap_socket(sock, keyfile, certfile, ssl_version=PROTOCOL_TLSv1, |
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20 cert_reqs=ssl.CERT_NONE, ca_certs=None): |
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21 sslsocket = ssl.wrap_socket(sock, keyfile, certfile, |
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22 cert_reqs=cert_reqs, ca_certs=ca_certs, |
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23 ssl_version=ssl_version) |
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24 # check if wrap_socket failed silently because socket had been closed |
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25 # - see http://bugs.python.org/issue13721 |
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26 if not sslsocket.cipher(): |
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27 raise util.Abort(_('ssl connection failed')) |
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28 return sslsocket |
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29 except ImportError: |
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30 CERT_REQUIRED = 2 |
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31 |
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32 PROTOCOL_SSLv23 = 2 |
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33 PROTOCOL_TLSv1 = 3 |
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34 |
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35 import socket, httplib |
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36 |
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37 def ssl_wrap_socket(sock, keyfile, certfile, ssl_version=PROTOCOL_TLSv1, |
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38 cert_reqs=CERT_REQUIRED, ca_certs=None): |
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39 if not util.safehasattr(socket, 'ssl'): |
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40 raise util.Abort(_('Python SSL support not found')) |
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41 if ca_certs: |
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42 raise util.Abort(_( |
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43 'certificate checking requires Python 2.6')) |
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44 |
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45 ssl = socket.ssl(sock, keyfile, certfile) |
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46 return httplib.FakeSocket(sock, ssl) |
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47 |
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48 def _verifycert(cert, hostname): |
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49 '''Verify that cert (in socket.getpeercert() format) matches hostname. |
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50 CRLs is not handled. |
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51 |
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52 Returns error message if any problems are found and None on success. |
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53 ''' |
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54 if not cert: |
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55 return _('no certificate received') |
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56 dnsname = hostname.lower() |
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57 def matchdnsname(certname): |
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58 return (certname == dnsname or |
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59 '.' in dnsname and certname == '*.' + dnsname.split('.', 1)[1]) |
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60 |
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61 san = cert.get('subjectAltName', []) |
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62 if san: |
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63 certnames = [value.lower() for key, value in san if key == 'DNS'] |
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64 for name in certnames: |
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65 if matchdnsname(name): |
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66 return None |
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67 if certnames: |
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68 return _('certificate is for %s') % ', '.join(certnames) |
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69 |
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70 # subject is only checked when subjectAltName is empty |
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71 for s in cert.get('subject', []): |
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72 key, value = s[0] |
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73 if key == 'commonName': |
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74 try: |
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75 # 'subject' entries are unicode |
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76 certname = value.lower().encode('ascii') |
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77 except UnicodeEncodeError: |
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78 return _('IDN in certificate not supported') |
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79 if matchdnsname(certname): |
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80 return None |
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81 return _('certificate is for %s') % certname |
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82 return _('no commonName or subjectAltName found in certificate') |
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83 |
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84 |
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85 # CERT_REQUIRED means fetch the cert from the server all the time AND |
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86 # validate it against the CA store provided in web.cacerts. |
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87 # |
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88 # We COMPLETELY ignore CERT_REQUIRED on Python <= 2.5, as it's totally |
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89 # busted on those versions. |
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90 |
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91 def sslkwargs(ui, host): |
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92 cacerts = ui.config('web', 'cacerts') |
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93 forcetls = ui.configbool('ui', 'tls', default=True) |
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94 if forcetls: |
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95 ssl_version = PROTOCOL_TLSv1 |
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96 else: |
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97 ssl_version = PROTOCOL_SSLv23 |
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98 hostfingerprint = ui.config('hostfingerprints', host) |
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99 kws = {'ssl_version': ssl_version, |
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100 } |
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101 if cacerts and not hostfingerprint: |
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102 cacerts = util.expandpath(cacerts) |
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103 if not os.path.exists(cacerts): |
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104 raise util.Abort(_('could not find web.cacerts: %s') % cacerts) |
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105 kws.update({'ca_certs': cacerts, |
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106 'cert_reqs': CERT_REQUIRED, |
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107 }) |
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108 return kws |
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109 |
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110 class validator(object): |
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111 def __init__(self, ui, host): |
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112 self.ui = ui |
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113 self.host = host |
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114 |
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115 def __call__(self, sock, strict=False): |
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116 host = self.host |
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117 cacerts = self.ui.config('web', 'cacerts') |
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118 hostfingerprint = self.ui.config('hostfingerprints', host) |
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119 if not getattr(sock, 'getpeercert', False): # python 2.5 ? |
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120 if hostfingerprint: |
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121 raise util.Abort(_("host fingerprint for %s can't be " |
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122 "verified (Python too old)") % host) |
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123 if strict: |
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124 raise util.Abort(_("certificate for %s can't be verified " |
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125 "(Python too old)") % host) |
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126 if self.ui.configbool('ui', 'reportoldssl', True): |
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127 self.ui.warn(_("warning: certificate for %s can't be verified " |
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128 "(Python too old)\n") % host) |
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129 return |
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130 |
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131 if not sock.cipher(): # work around http://bugs.python.org/issue13721 |
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132 raise util.Abort(_('%s ssl connection error') % host) |
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133 try: |
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134 peercert = sock.getpeercert(True) |
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135 peercert2 = sock.getpeercert() |
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136 except AttributeError: |
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137 raise util.Abort(_('%s ssl connection error') % host) |
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138 |
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139 if not peercert: |
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140 raise util.Abort(_('%s certificate error: ' |
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141 'no certificate received') % host) |
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142 peerfingerprint = util.sha1(peercert).hexdigest() |
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143 nicefingerprint = ":".join([peerfingerprint[x:x + 2] |
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144 for x in xrange(0, len(peerfingerprint), 2)]) |
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145 if hostfingerprint: |
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146 if peerfingerprint.lower() != \ |
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147 hostfingerprint.replace(':', '').lower(): |
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148 raise util.Abort(_('certificate for %s has unexpected ' |
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149 'fingerprint %s') % (host, nicefingerprint), |
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150 hint=_('check hostfingerprint configuration')) |
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151 self.ui.debug('%s certificate matched fingerprint %s\n' % |
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152 (host, nicefingerprint)) |
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153 elif cacerts: |
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154 msg = _verifycert(peercert2, host) |
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155 if msg: |
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156 raise util.Abort(_('%s certificate error: %s') % (host, msg), |
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157 hint=_('configure hostfingerprint %s or use ' |
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158 '--insecure to connect insecurely') % |
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159 nicefingerprint) |
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160 self.ui.debug('%s certificate successfully verified\n' % host) |
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161 elif strict: |
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162 raise util.Abort(_('%s certificate with fingerprint %s not ' |
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163 'verified') % (host, nicefingerprint), |
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164 hint=_('check hostfingerprints or web.cacerts ' |
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165 'config setting')) |
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166 else: |
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167 self.ui.warn(_('warning: %s certificate with fingerprint %s not ' |
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168 'verified (check hostfingerprints or web.cacerts ' |
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169 'config setting)\n') % |
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170 (host, nicefingerprint)) |