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SSL peer certificate checking routines
Copyright (c) 2004-2007 Open Source Applications Foundation.
All rights reserved.
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This exception will be raised if the certificate returned by the
peer was issued for a different host than we tried to connect to.
This could be due to a server misconfiguration or an active attack.
@param expectedHost: The name of the host we expected to find in the
certificate.
@param actualHost: The name of the host we actually found in the
certificate.
@param fieldName: The field name where we noticed the error. This
should be either 'commonName' or 'subjectAltName'.
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>>> check = Checker()
>>> check._splitSubjectAltName(host='my.example.com', subjectAltName='DNS:my.example.com')
True
>>> check._splitSubjectAltName(host='my.example.com', subjectAltName='DNS:*.example.com')
True
>>> check._splitSubjectAltName(host='my.example.com', subjectAltName='DNS:m*.example.com')
True
>>> check._splitSubjectAltName(host='my.example.com', subjectAltName='DNS:m*ample.com')
False
>>> check.useSubjectAltNameOnly
True
>>> check._splitSubjectAltName(host='my.example.com', subjectAltName='DNS:m*ample.com, othername:<unsupported>')
False
>>> check._splitSubjectAltName(host='my.example.com', subjectAltName='DNS:m*ample.com, DNS:my.example.org')
False
>>> check._splitSubjectAltName(host='my.example.com', subjectAltName='DNS:m*ample.com, DNS:my.example.com')
True
>>> check._splitSubjectAltName(host='my.example.com', subjectAltName='DNS:my.example.com, DNS:my.example.org')
True
>>> check.useSubjectAltNameOnly
True
>>> check._splitSubjectAltName(host='my.example.com', subjectAltName='')
False
>>> check._splitSubjectAltName(host='my.example.com', subjectAltName='othername:<unsupported>')
False
>>> check.useSubjectAltNameOnly
False
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>>> check = Checker()
>>> check._match(host='my.example.com', certHost='my.example.com')
True
>>> check._match(host='my.example.com', certHost='*.example.com')
True
>>> check._match(host='my.example.com', certHost='m*.example.com')
True
>>> check._match(host='my.example.com', certHost='m*.EXAMPLE.com')
True
>>> check._match(host='my.example.com', certHost='m*ample.com')
False
>>> check._match(host='my.example.com', certHost='*.*.com')
False
>>> check._match(host='1.2.3.4', certHost='1.2.3.4')
True
>>> check._match(host='1.2.3.4', certHost='*.2.3.4')
False
>>> check._match(host='1234', certHost='1234')
True
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