use go-gdpr instead of iabtcfv2

adapters/flipp/flipp.go

@@ -1,15 +1,17 @@
 package flipp
 
 import (
+	"encoding/base64"
 	"encoding/json"
 	"fmt"
 	"net/http"
 	"net/url"
 	"strings"
 
-	"github.com/SirDataFR/iabtcfv2"
 	"github.com/buger/jsonparser"
 	"github.com/gofrs/uuid"
+	"github.com/prebid/go-gdpr/consentconstants"
+	"github.com/prebid/go-gdpr/vendorconsent"
 	"github.com/prebid/openrtb/v19/openrtb2"
 	"github.com/prebid/prebid-server/v2/adapters"
 	"github.com/prebid/prebid-server/v2/config"
@@ -252,18 +254,20 @@ func paramsUserKeyPermitted(request *openrtb2.BidRequest) bool {
 		}
 		if err := json.Unmarshal(request.Ext, &extData); err == nil {
 			if extData.TransmitEids != nil && !*extData.TransmitEids {
-				fmt.Printf("HEREEEEEEEEEE %s", request.Ext)
 				return false
 			}
 		}
 	}
 	if request.User != nil && request.User.Consent != "" {
-		tcModel, err := iabtcfv2.Decode(request.User.Consent)
+		data, err := base64.RawURLEncoding.DecodeString(request.User.Consent)
 		if err != nil {
 			return true
 		}
-		_, tcf4InScope := tcModel.CoreString.PurposesConsent[4]
-		if tcf4InScope && !tcModel.IsPurposeAllowed(4) {
+		consent, err := vendorconsent.Parse(data)
+		if err != nil {
+			return true
+		}
+		if !consent.PurposeAllowed(consentconstants.ContentSelectionDeliveryReporting) {
 			return false
 		}
 	}

go.mod

@@ -15,6 +15,7 @@ require (
 	github.com/go-sql-driver/mysql v1.6.0
 	github.com/gofrs/uuid v4.2.0+incompatible
 	github.com/golang/glog v1.0.0
+	github.com/json-iterator/go v1.1.12
 	github.com/julienschmidt/httprouter v1.3.0
 	github.com/lib/pq v1.10.4
 	github.com/mitchellh/copystructure v1.2.0
@@ -39,16 +40,13 @@ require (
 )
 
 require (
-	github.com/SirDataFR/iabtcfv2 v1.2.0 // indirect
-	github.com/aws/smithy-go v1.15.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/fsnotify/fsnotify v1.5.4 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/influxdata/influxdb1-client v0.0.0-20191209144304-8bf82d3c094d // indirect
-	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/magiconair/properties v1.8.6 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect

go.sum

@@ -59,8 +59,6 @@ github.com/IABTechLab/adscert v0.34.0/go.mod h1:pCLd3Up1kfTrH6kYFUGGeavxIc1f6Tvv
 github.com/NYTimes/gziphandler v1.1.1 h1:ZUDjpQae29j0ryrS0u/B8HZfJBtBQHjqw2rQ2cqUQ3I=
 github.com/NYTimes/gziphandler v1.1.1/go.mod h1:n/CVRwUEOgIxrgPvAQhUUr9oeUtvrhMomdKFjzJNB0c=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
-github.com/SirDataFR/iabtcfv2 v1.2.0 h1:IMVoOYqoAdZanTHDznjyM1Yf7P9P8orviFM9ESfXxpU=
-github.com/SirDataFR/iabtcfv2 v1.2.0/go.mod h1:wBEfrSz6AcFCRtxRSGPj8XB4Ut4ntjkM32zV4V/byTk=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
@@ -75,8 +73,6 @@ github.com/armon/go-radix v1.0.0/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgI
 github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d h1:Byv0BzEl3/e6D5CLfI0j/7hiIEtvGVFPCZ7Ei2oq8iQ=
 github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw=
 github.com/aws/aws-sdk-go v1.36.29/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
-github.com/aws/smithy-go v1.15.0 h1:PS/durmlzvAFpQHDs4wi4sNNP9ExsqZh6IlfdHXgKK8=
-github.com/aws/smithy-go v1.15.0/go.mod h1:Tg+OJXh4MB2R/uN61Ko2f6hTZwB/ZYGOtib8J3gBHzA=
 github.com/benbjohnson/clock v1.3.0 h1:ip6w0uFQkncKQ979AypyG0ER7mqUSBdKLOgAle/AT8A=
 github.com/benbjohnson/clock v1.3.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
@@ -214,7 +210,6 @@ github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.7/go.mod h1:n+brtR0CgQNWTVd5ZUFpTBC8YFBDLK/h/bpaJ8/DtOE=
-github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=