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Match regex/wildcard against http header NAMES in haproxy - Stack Overflow

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Tags: regular-expressions configuration haproxy howto stackoverflow.com
Clipped on: 2024-07-29

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Asked 5 years, 11 months ago
Viewed 1k times
2

I'd like to add an acl rule to capture the existence of a header name that matches the following regex: ^X-w+-Signature (or whatever wildcard). Examples to match:

X-Abc-Signature
X-Whatever-Signature
X-Service-Signature

I know I could explicitly create rules like:

acl has_abc_token req.fhdr(X-Abc-Signature) -m found
acl has_whatever_token req.fhdr(X-Whatever-Signature) -m found
acl has_service_token req.fhdr(X-Service-Signature) -m found

Is it even possible to do this in haproxy?

Also, it's my understanding is that the w character class does not exist in haproxy?

It looks like req.hdr_names() might be what I'm looking for, but I'm at a loss at how to use it.

asked Aug 3, 2018 at 20:29
David Budiac
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1 Answer

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1

Nevermind. I figured it out:

acl has_sig req.hdr_names() -m reg -i ,X-[A-Za-z]+-Signature
answered Aug 3, 2018 at 20:49
David Budiac
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