add most basic error handling on the decode side

internal/decoders/data_packet_chunk.go

@@ -15,8 +15,13 @@ type DataPacketChunk struct {
 	Data  DataPacketChunkData
 }
 
-func DecodeDataPacketChunk(bytes []byte) DataPacketChunk {
-	chunk := DecodeChunk(bytes)
+func DecodeDataPacketChunk(bytes []byte) (DataPacketChunk, error) {
+	chunk, err := DecodeChunk(bytes)
+
+	if err != nil {
+		return DataPacketChunk{}, err
+	}
+
 	data := DataPacketChunkData{}
 
 	if chunk.Header.HasSubchunks && chunk.ChunkData != nil && chunk.Header.DataLen > 0 {
@@ -25,14 +30,20 @@ func DecodeDataPacketChunk(bytes []byte) DataPacketChunk {
 		for offset < int(chunk.Header.DataLen) {
 			switch id := binary.LittleEndian.Uint16(chunk.ChunkData[offset : offset+2]); id {
 			case 0x0000:
-				packet_header := DecodePacketHeaderChunk(chunk.ChunkData[offset:])
+				packet_header, err := DecodePacketHeaderChunk(chunk.ChunkData[offset:])
+				if err != nil {
+					return DataPacketChunk{}, err
+				}
 				data.PacketHeader = &packet_header
 				offset += 4
 				if packet_header.Chunk.Header.DataLen > 0 {
 					offset = offset + int(packet_header.Chunk.Header.DataLen)
 				}
 			case 0x0001:
-				tracker_list := DecodeDataTrackerListChunk(chunk.ChunkData[offset:])
+				tracker_list, err := DecodeDataTrackerListChunk(chunk.ChunkData[offset:])
+				if err != nil {
+					return DataPacketChunk{}, err
+				}
 				data.TrackerList = &tracker_list
 				offset += 4
 				if tracker_list.Chunk.Header.DataLen > 0 {
@@ -46,7 +57,8 @@ func DecodeDataPacketChunk(bytes []byte) DataPacketChunk {
 	}
 
 	return DataPacketChunk{
-		Chunk: chunk,
-		Data:  data,
-	}
+			Chunk: chunk,
+			Data:  data,
+		},
+		nil
 }