SPF / DMARC case sensitivity

[bwbroersma]

These are case sensitive regular expressions:

Internet.nl/checks/__init__.py

Lines 5 to 7 in f18cb79

	DMARC_NON_SENDING_POLICY = re.compile(r"^v=DMARC1;\ *p=reject;?")
	DMARC_NON_SENDING_POLICY_ORG = re.compile(r"v=DMARC1;(?:.*sp=reject|\ *p=reject(?!.*sp=))")
	SPF_NON_SENDING_POLICY = re.compile(r"^v=spf1\ +(?:exp=[^ ]+\ +)?-all;?(?:\ +exp=[^ ]+)?$")

While the only case sensitive part is DMARC1, the rest is case insensitive according to the ABNF grammar and the related RFC 5234 - Augmented BNF for Syntax Specifications: ABNF - page 5.

Related:

• Discision on disabling DKIM test too strict #916
• DMARC whitespace #1114

[gthess]

They are but they are used on already parsed records IIRC, so case sensitivity does not matter at that point.

[gthess]

I mean if they turn into case insensitive regular expressions it should work.

[bwbroersma]

Could indeed be converted to case insensitive regular expressions to fix this part of the regex parsing.