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Add verify functions for encodings (eg base64) #2690

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carlpett opened this issue Sep 10, 2020 · 0 comments
Closed

Add verify functions for encodings (eg base64) #2690

carlpett opened this issue Sep 10, 2020 · 0 comments
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feature-request
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Open Policy Agent

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@carlpett
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Currently it is not possible to verify input is in some specific encoding, such as base64. The only option I've found is letting the decode function abort with an error, which isn't quite as nice as a policy failure.

Expected Behavior

_ := base64.verify("not-base64") # false
_ := base64.verify("YWN0dWFsbHktYmFzZTY0") # true

Actual Behavior

_ := base64.decode("not-base64") # ERROR
@patrick-east patrick-east added this to TODO (Things That Should Be Done) in Open Policy Agent via automation Sep 10, 2020
@carlpett carlpett mentioned this issue Sep 11, 2020
Merged
carlpett added a commit to carlpett/opa that referenced this issue Sep 21, 2020
@carlpett
topdown: Add base64.is_valid builtin
97e4f4b 
Adds a builtin to check if a string is valid base64

Fixes: open-policy-agent#2690

Signed-off-by: Calle Pettersson <calle@cape.nu>
Open Policy Agent automation moved this from TODO (Things That Should Be Done) to Done Sep 22, 2020
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@carlpett @patrick-east