forked from solderpunk/AV-98
Check alternative subject names.
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094e3117c4
commit
ec07491578
20
av98.py
20
av98.py
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@ -665,10 +665,24 @@ Slow internet connection? Use 'set timeout' to be more patient.""")
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elif c.not_valid_after <= now:
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raise CertificateError("Certificate expired as of: {})!".format(c.not_valid_after))
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# Check certificate hostname
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# TODO: Check alternative names too
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# Check certificate hostnames
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names = []
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common_name = c.subject.get_attributes_for_oid(x509.oid.NameOID.COMMON_NAME)[0].value
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ssl._dnsname_match(common_name, host)
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names.append(common_name)
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try:
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names.extend([alt.value for alt in c.extensions.get_extension_for_oid(x509.oid.ExtensionOID.SUBJECT_ALTERNATIVE_NAME).value])
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except x509.ExtensionNotFound:
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pass
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names = set(names)
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for name in names:
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try:
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ssl._dnsname_match(common_name, host)
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break
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except CertificateError:
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continue
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else:
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# If we didn't break out, none of the names were valid
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raise CertificateError("Hostname does not match certificate common name or any alternative names.")
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sha = hashlib.sha256()
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sha.update(cert)
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