add support for other GPP sections

ccpa_parsed_consent.go

@@ -0,0 +1,44 @@
+package iabconsent
+
+import "github.com/pkg/errors"
+
+const (
+	CCPAYes           = 'Y'
+	CCPANo            = 'N'
+	CCPANotApplicable = '-'
+	CCPAVersion       = 1
+)
+
+// CcpaParsedConsent represents data extract from a California Consumer Privacy Act (CCPA) consent string.
+// Format can be found here: https://github.com/InteractiveAdvertisingBureau/USPrivacy/blob/master/CCPA/US%20Privacy%20String.md
+type CcpaParsedConsent struct {
+	// The version of this string specification used to encode the string
+	Version int
+
+	// N = No, Y = Yes, - = Not Applicable
+	Notice uint8
+
+	// N = No, Y = Yes, - = Not Applicable; For use ONLY when CCPA does not apply.
+	OptOutSale uint8
+
+	// 0 = No, 1 = Yes, - = Not Applicable
+	LSPACoveredTransaction uint8
+}
+
+func IsValidCCPAString(ccpaString string) (bool, error) {
+	if len(ccpaString) != 4 {
+		return false, errors.Wrap(nil, "invalid uspv consent string length")
+	}
+
+	if ccpaString[0]-'0' != CCPAVersion {
+		return false, errors.Wrap(nil, "invalid uspv consent string version")
+	}
+
+	for i := 1; i < 4; i++ {
+		if ccpaString[i] != CCPAYes && ccpaString[i] != CCPANo && ccpaString[i] != CCPANotApplicable {
+			return false, errors.Wrap(nil, "invalid uspv consent string")
+		}
+	}
+
+	return true, nil
+}

gpp_parsed_consent.go

@@ -8,6 +8,18 @@ import (
 	"github.com/pkg/errors"
 )
 
+const (
+	SectionIDEUTCFv2 = 2
+	SectionIDCANTCF  = 5
+	SectionIDUSPV1   = 6
+	SectionIDUSNAT   = 7
+	SectionIDUSCA    = 8
+	SectionIDUSVA    = 9
+	SectionIDUSCO    = 10
+	SectionIDUSUT    = 11
+	SectionIDUSCT    = 12
+)
+
 // GppHeader is the first section of a GPP Consent String.
 // See ParseGppHeader for in-depth format.
 type GppHeader struct {
@@ -105,13 +117,28 @@ func MapGppSectionToParser(s string) ([]GppSectionParser, error) {
 	for i := 1; i < len(segments); i++ {
 		var gppSection GppSectionParser
 		switch sid := gppHeader.Sections[i-1]; sid {
-		case 7:
+		case SectionIDEUTCFv2:
+			gppSection = NewTCFEU(segments[i])
+		case SectionIDCANTCF:
+			gppSection = NewTCFCA(segments[i])
+		case SectionIDUSPV1:
+			gppSection = NewUSPV(segments[i])
+		case SectionIDUSNAT:
 			gppSection = NewMspaNational(segments[i])
-		case 9:
+		case SectionIDUSCA:
+			gppSection = NewMspaCA(segments[i])
+		case SectionIDUSVA:
 			gppSection = NewMspaVA(segments[i])
+		case SectionIDUSCO:
+			gppSection = NewMspaCO(segments[i])
+		case SectionIDUSUT:
+			gppSection = NewMspaUT(segments[i])
+		case SectionIDUSCT:
+			gppSection = NewMspaCT(segments[i])
 		default:
 			// Skip if no matching struct, as Section ID is not supported yet.
 			// Any newly supported Section IDs should be added as cases here.
+			// TODO: GPP error handling
 		}
 		if gppSection != nil {
 			gppSections = append(gppSections, gppSection)
@@ -136,6 +163,7 @@ func ParseGppConsent(s string) (map[int]GppParsedConsent, error) {
 		var consentErr error
 		consent, consentErr = gpp.ParseConsent()
 		if consentErr != nil {
+			// TODO: GPP error handling
 			// If an error, quietly do not add the consent value to map.
 		} else {
 			gppConsents[gpp.GetSectionId()] = consent