Merge pull request #19 from prebid/liTransparency

Add support for PurposesLITransparency
prebid · May 13, 2020 · f829aa7 · f829aa7
2 parents b8a3577 + f77e879
commit f829aa7
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diff --git a/vendorconsent/tcf2/metadata.go b/vendorconsent/tcf2/metadata.go
@@ -141,6 +141,15 @@ func (c ConsentMetadata) PurposeAllowed(id consentconstants.Purpose) bool {
 	return isSet(c.data, uint(id)+151)
 }
 
+func (c ConsentMetadata) PurposeLITransparency(id consentconstants.Purpose) bool {
+	// Purposes are stored in bits 176 - 199. The interface contract only defines behavior for ints in the range [1, 24]...
+	// so in the valid range, this won't even overflow a uint8.
+	if id > 24 {
+		return false
+	}
+	return isSet(c.data, uint(id)+175)
+}
+
 func (c ConsentMetadata) PurposeOneTreatment() bool {
 	return isSet(c.data, 200)
 }

diff --git a/vendorconsent/tcf2/metadata_test.go b/vendorconsent/tcf2/metadata_test.go
@@ -68,3 +68,19 @@ func TestTCF2Fields(t *testing.T) {
 	assertBoolsEqual(t, true, consent.SpecialFeatureOptIn(1))
 	assertBoolsEqual(t, false, consent.SpecialFeatureOptIn(2))
 }
+
+func TestLITransparency(t *testing.T) {
+	baseConsent, err := Parse(decode(t, "COx3XOeOx3XOeLkAAAENAfCIAAAAAHgAAIAAAAAAAAAA"))
+	assertNilError(t, err)
+	consent := baseConsent.(ConsentMetadata)
+
+	assertBoolsEqual(t, false, consent.PurposeLITransparency(1))
+	assertBoolsEqual(t, true, consent.PurposeLITransparency(2))
+	assertBoolsEqual(t, true, consent.PurposeLITransparency(3))
+	assertBoolsEqual(t, true, consent.PurposeLITransparency(4))
+	assertBoolsEqual(t, true, consent.PurposeLITransparency(5))
+	assertBoolsEqual(t, false, consent.PurposeLITransparency(6))
+	assertBoolsEqual(t, false, consent.PurposeLITransparency(7))
+	assertBoolsEqual(t, false, consent.PurposeLITransparency(28))
+
+}