/
rekey.go
51 lines (41 loc) · 1.25 KB
/
rekey.go
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package maccommand
import (
"fmt"
"github.com/brocaar/lorawan"
log "github.com/sirupsen/logrus"
"github.com/brocaar/loraserver/internal/storage"
)
const servLoRaWANVersionMinor uint8 = 1
func handleRekeyInd(ds *storage.DeviceSession, block storage.MACCommandBlock) ([]storage.MACCommandBlock, error) {
if len(block.MACCommands) != 1 {
return nil, fmt.Errorf("exactly one mac-command expected, got %d", len(block.MACCommands))
}
pl, ok := block.MACCommands[0].Payload.(*lorawan.RekeyIndPayload)
if !ok {
return nil, fmt.Errorf("expected *lorawan.RekeyIndPayload, got %T", block.MACCommands[0].Payload)
}
respPL := lorawan.RekeyConfPayload{
ServLoRaWANVersion: lorawan.Version{
Minor: servLoRaWANVersionMinor,
},
}
if servLoRaWANVersionMinor > pl.DevLoRaWANVersion.Minor {
respPL.ServLoRaWANVersion.Minor = pl.DevLoRaWANVersion.Minor
}
log.WithFields(log.Fields{
"dev_eui": ds.DevEUI,
"dev_lorawan_version_minor": pl.DevLoRaWANVersion.Minor,
"serv_lorawan_version_minor": servLoRaWANVersionMinor,
}).Info("rekey_ind received")
return []storage.MACCommandBlock{
{
CID: lorawan.RekeyConf,
MACCommands: storage.MACCommands{
{
CID: lorawan.RekeyConf,
Payload: &respPL,
},
},
},
}, nil
}