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SecTXT: Security.txt parser and validator

This package contains a security.txt (RFC 9116) parser and validator.

Usage:

>>> from sectxt import SecurityTXT
>>> s = SecurityTXT("www.example.com")
>>> s.is_valid()
True

Validation

>>> from sectxt import SecurityTXT
>>> s = SecurityTXT("www.example.com")
>>> s.errors
[{'code': 'no_uri', 'message': 'The field value must be an URI', 'line': 2}, {'code': 'no_expire', 'message': 'The Expires field is missing', 'line': None}]
>>> s.recommendations
[{'code': 'long_expiry', 'message': 'Expiry date is more than one year in the future', 'line': 3}]

The "errors" and "recommendations" attribute return a list of entries. An entry is a dict with three keys

key value
code A fixed error code string
message A human readable error message in English
line The 1 based integer line number where the error occurred or None when the error applies to the entire file

Possible errors

code message
"no_expire" "Expires field is missing."
"multi_expire" "Expires field must appear only once."
"expired" "Expiry date has passed."
"invalid_expiry" "Date in Expires field is invalid."
"no_canonical_match" "URL does not match with canonical URLs."
"no_contact" "Contact field must appear at least once."
"prec_ws" "There must be no whitespace before the field separator (colon)."
"empty_key" "Field key can not be empty."
"no_space" "The field separator (colon) must be followed by a space."
"empty_value" "Field value can not be empty."
"no_uri" "Field value must be an URI."
"no_https" "A web URI must be https."
"utf8" "Content is not utf-8 encoded."
"location" "Security.txt must be located at .well-known/security.txt."
"no_security_txt" "Can not locate security.txt."
"multi_lang" "Multiple Preferred-Languages lines are not allowed."
"invalid_line" "No key and value found."
"invalid_cert" "Invalid certificate.
"no_content_type" "Missing HTTP content-type header."
"invalid_media" "Media type in content-type header must be 'text/plain'.
"invalid_charset" "Charset parameter in content-type header must be 'utf-8' if present."

Possible recommendations

code message
"long_expiry" "Expiry date is more than one year in the future."
"no_encryption" "Contact missing encryption key for email communication.",
"not_signed" "The contents should be digitally signed."
"no_canonical" "Canonical field should be present in a signed file."

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