gs: Fix nil pointer exception on FSK for ttigw

vlasebian · vlasebian · commit e0e5edc4e347 · 2025-06-04T15:50:05.000+03:00
diff --git a/pkg/gatewayserver/io/ttigw/mapping.go b/pkg/gatewayserver/io/ttigw/mapping.go
@@ -273,6 +273,9 @@ func toUplinkMessage(
 		}
 
 	case msg.IfChain == 8: // FSK
+		if board.Ifs.Fsk == nil {
+			return nil, errInvalidIFChain.WithAttributes("if_chain", msg.IfChain)
+		}
 		rfChain = board.Ifs.Fsk.RfChain
 		frequencyOffset = board.Ifs.Fsk.Frequency
 		dataRate.Modulation = &ttnpb.DataRate_Fsk{

Original file line number	Diff line number	Diff line change
`@@ -273,6 +273,9 @@ func toUplinkMessage(`
`273`	`273`	`}`
`274`	`274`
`275`	`275`	`case msg.IfChain == 8: // FSK`
	`276`	`+ if board.Ifs.Fsk == nil {`
	`277`	`+ return nil, errInvalidIFChain.WithAttributes("if_chain", msg.IfChain)`
	`278`	`+ }`
`276`	`279`	`rfChain = board.Ifs.Fsk.RfChain`
`277`	`280`	`frequencyOffset = board.Ifs.Fsk.Frequency`
`278`	`281`	`dataRate.Modulation = &ttnpb.DataRate_Fsk{`