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proof(SafeCORS): qualify defaultPolicy to fix 4 broken Refl proofs (#92) #94

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Merged
hyperpolymath merged 1 commit into from
May 30, 2026
Merged

proof(SafeCORS): qualify defaultPolicy to fix 4 broken Refl proofs (#92) #94

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1 change: 1 addition & 0 deletions proven.ipkg
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Original file line number Diff line number Diff line change
Expand Up @@ -236,6 +236,7 @@ modules = Proven
, Proven.SafeHTTP
, Proven.SafePromptInjection
, Proven.SafeCORS
, Proven.SafeCORS.Proofs
, Proven.SafeAPIKey
, Proven.SafeWebSocket
-- Security hardening modules (v1.2.0)
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19 changes: 14 additions & 5 deletions src/Proven/SafeCORS/Proofs.idr
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Expand Up @@ -17,25 +17,34 @@ import Data.List
-- Default Policy Properties
--------------------------------------------------------------------------------

-- NOTE: bare `defaultPolicy` in these type signatures is implicitly
-- bound as a fresh lowercase variable by Idris2 0.8.0, shadowing
-- `Proven.SafeCORS.defaultPolicy`. The `Refl` then cannot reduce
-- because the type-level `defaultPolicy` is opaque. Qualifying with
-- `Proven.SafeCORS.defaultPolicy` resolves the shadowing. See
-- hyperpolymath/proven#92.

||| The default policy denies all origins.
public export
defaultPolicyDeniesAll : (origin : Origin) -> isOriginAllowed defaultPolicy origin = False
defaultPolicyDeniesAll : (origin : Origin) ->
isOriginAllowed Proven.SafeCORS.defaultPolicy origin = False
defaultPolicyDeniesAll _ = Refl

||| The default policy is not an unsafe configuration.
public export
defaultPolicyIsSafe : isUnsafeConfiguration defaultPolicy = False
defaultPolicyIsSafe : isUnsafeConfiguration Proven.SafeCORS.defaultPolicy = False
defaultPolicyIsSafe = Refl

||| The default policy has no validation errors.
public export
defaultPolicyNoErrors : validatePolicy defaultPolicy = []
defaultPolicyNoErrors : validatePolicy Proven.SafeCORS.defaultPolicy = []
defaultPolicyNoErrors = Refl

||| The default policy does not generate headers (denies all).
public export
defaultPolicyNoHeaders : (origin : Origin) -> generateHeaders defaultPolicy origin = Nothing
defaultPolicyNoHeaders origin = Refl
defaultPolicyNoHeaders : (origin : Origin) ->
generateHeaders Proven.SafeCORS.defaultPolicy origin = Nothing
defaultPolicyNoHeaders _ = Refl

--------------------------------------------------------------------------------
-- Wildcard+Credentials Safety
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