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Add warning about multiple SANs extensions

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This commit is contained in:
Brad Warren
2016-01-07 16:45:46 -05:00
parent f09d3ac8b2
commit 946f4474da
1 changed files with 2 additions and 2 deletions
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acme/acme/crypto_util.py
+2 -2
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@@ -169,11 +169,11 @@ def _pyopenssl_cert_or_req_san(cert_or_req):
func = OpenSSL.crypto.dump_certificate
else:
func = OpenSSL.crypto.dump_certificate_request
# This method of finding SANs is used to support PyOpenSSL version 0.13.
text = func(OpenSSL.crypto.FILETYPE_TEXT, cert_or_req).decode("utf-8")
# WARNING: this function does not support multiple SANs extensions.
# Multiple X509v3 extensions of the same type is disallowed by RFC 5280.
match = re.search(r"X509v3 Subject Alternative Name:\s*(.*)", text)
# WARNING: this function assumes that no SAN can include
# parts_separator, hence the split!
sans_parts = [] if match is None else match.group(1).split(parts_separator)