On Tue 26/Mar/2024 21:57:46 +0100 Matthäus Wander wrote:
Alessandro Vesely wrote on 2024-03-26 19:30:
No. To take several years and come up with a syntax which does not cover all
valid addresses is a sign of incompetence that this WG doesn't deserve, IMHO.
What do others think?
Let's rather switch to /[0-9a-fA-F.:]+/. Terse and correct.
I'm in favor of a brief and coarse regex, which is suitable for detecting
obvious junk. The above proposal looks good enough to me. I wouldn't mind
adding an outer bounds check, e.g.: [0-9a-fA-F.:]{3,45}
I changed that to /[0-9a-fA-F.:]{2,45}/, to allow "::", and inserted it in
dmarc-xml-0.2-short.xsd[*]. At the same time, I added a pattern for "::1.2.3.4" in
dmarc-xml-0.2.xsd[†]. I tested both against the list of IP that I attach. (xmllint allows
breaking a pattern by backslash+newline, svalidate and xmlstarlet don't. However, publishing on
IETF XML Registry shouldn't have line length limitations.)
If an implementer sees merit in a comprehensive syntax check, they can add one
to their software.
I'm not clear what will that schema be used for, if at all. Personally, the
only reason why I'd prefer the long regex is because it might have some value
by itself. The short one is cleaner and more grokkable. The wrong one has
none of those qualities.
Best
Ale
--
[*]
https://github.com/alevesely/draft-ietf-dmarc-aggregate-reporting/blob/main/dmarc-xml-0.2-short.xsd
[†]
https://github.com/alevesely/draft-ietf-dmarc-aggregate-reporting/blob/main/dmarc-xml-0.2.xsd
2001:db8:0:0:1:0:0:1
2001:0db8:0:0:1:0:0:1
2001:db8::1:0:0:1
2001:db8::0:1:0:0:1
2001:0db8::1:0:0:1
2001:db8:0:0:1::1
2001:db8:0000:0:1::1
2001:DB8:0:0:1::1
2001:db8:aaaa:bbbb:cccc:dddd:eeee:0001
2001:db8:aaaa:bbbb:cccc:dddd:eeee:001
2001:db8:aaaa:bbbb:cccc:dddd:eeee:01
2001:db8:aaaa:bbbb:cccc:dddd:eeee:1
2001:db8:aaaa:bbbb:cccc:dddd::1
2001:db8:aaaa:bbbb:cccc:dddd:0:1
2001:db8:0:0:0::1
2001:db8:0:0::1
2001:db8:0::1
2001:db8::1
2001:db8::aaaa:0:0:1
2001:db8:0:0:aaaa::1
2001:db8:aaaa:bbbb:cccc:dddd:eeee:aaaa
2001:db8:aaaa:bbbb:cccc:dddd:eeee:AAAA
2001:db8:aaaa:bbbb:cccc:dddd:eeee:AaAa
ABCD:EF01:2345:6789:ABCD:EF01:2345:6789
2001:DB8:0:0:8:800:200C:417A
2001:DB8:0:0:8:800:200C:417A
FF01:0:0:0:0:0:0:101
0:0:0:0:0:0:0:1
0:0:0:0:0:0:0:0
2001:DB8::8:800:200C:417A
FF01::101
::1
::
0:0:0:0:0:0:13.1.68.3
0:0:0:0:0:FFFF:129.144.52.38
::13.1.68.3
::FFFF:129.144.52.38
::ffff:12.34.56.78
::0:ffff:12.34.56.78
::00:ffff:12.34.56.78
::000:ffff:12.34.56.78
::0000:ffff:12.34.56.78
::0:00:ffff:12.34.56.78
::00:00:ffff:12.34.56.78
::000:00:ffff:12.34.56.78
::0000:00:ffff:12.34.56.78
::0:0:0:ffff:12.34.56.78
::0:0:00:ffff:12.34.56.78
::0:00:00:ffff:12.34.56.78
::0:0:000:ffff:12.34.56.78
::0:0000:0:ffff:12.34.56.78
::00:0:0:ffff:012.034.056.078
::0:00:0:ffff:012.034.056.078
::0:0:00:ffff:012.034.056.078
::000:0:0:ffff:012.034.056.078
::0:000:0:ffff:012.034.056.078
::0:0:000:ffff:012.034.056.078
::0000:0:0000:ffff:012.034.056.078
::
::1
1::
0::
0.0.0.0
1.0.0.0
0.1.0.0
0.0.1.0
0.0.0.1
a::b
0:a:b::
0:0:a::b
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