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policy.go
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policy.go
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package ccpa
import (
"fmt"
"github.com/mxmCherry/openrtb/v16/openrtb2"
"github.com/prebid/prebid-server/openrtb_ext"
)
// Policy represents the CCPA regulatory information from an OpenRTB bid request.
type Policy struct {
Consent string
NoSaleBidders []string
}
// ReadFromRequestWrapper extracts the CCPA regulatory information from an OpenRTB bid request.
func ReadFromRequestWrapper(req *openrtb_ext.RequestWrapper) (Policy, error) {
var consent string
var noSaleBidders []string
if req == nil {
return Policy{}, nil
}
// Read consent from request.regs.ext
regsExt, err := req.GetRegExt()
if err != nil {
return Policy{}, fmt.Errorf("error reading request.regs.ext: %s", err)
}
if regsExt != nil {
consent = regsExt.GetUSPrivacy()
}
// Read no sale bidders from request.ext.prebid
reqExt, err := req.GetRequestExt()
if err != nil {
return Policy{}, fmt.Errorf("error reading request.ext: %s", err)
}
reqPrebid := reqExt.GetPrebid()
if reqPrebid != nil {
noSaleBidders = reqPrebid.NoSale
}
return Policy{consent, noSaleBidders}, nil
}
func ReadFromRequest(req *openrtb2.BidRequest) (Policy, error) {
return ReadFromRequestWrapper(&openrtb_ext.RequestWrapper{BidRequest: req})
}
// Write mutates an OpenRTB bid request with the CCPA regulatory information.
func (p Policy) Write(req *openrtb_ext.RequestWrapper) error {
if req == nil {
return nil
}
regsExt, err := req.GetRegExt()
if err != nil {
return err
}
reqExt, err := req.GetRequestExt()
if err != nil {
return err
}
regsExt.SetUSPrivacy(p.Consent)
setPrebidNoSale(p.NoSaleBidders, reqExt)
return nil
}
func setPrebidNoSale(noSaleBidders []string, ext *openrtb_ext.RequestExt) {
if len(noSaleBidders) == 0 {
setPrebidNoSaleClear(ext)
} else {
setPrebidNoSaleWrite(noSaleBidders, ext)
}
}
func setPrebidNoSaleClear(ext *openrtb_ext.RequestExt) {
prebid := ext.GetPrebid()
if prebid == nil {
return
}
// Remove no sale member
prebid.NoSale = []string{}
ext.SetPrebid(prebid)
}
func setPrebidNoSaleWrite(noSaleBidders []string, ext *openrtb_ext.RequestExt) {
if ext == nil {
// This should hopefully not be possible. The only caller insures that this has been initialized
return
}
prebid := ext.GetPrebid()
if prebid == nil {
prebid = &openrtb_ext.ExtRequestPrebid{}
}
prebid.NoSale = noSaleBidders
ext.SetPrebid(prebid)
}