add macos pacp

capture/pacp_linux.go

@@ -0,0 +1,36 @@
+// +build linux
+
+package capture
+
+func initEthernetHandlerFromPacp() (handler PcapHandler) {
+	pcapgoHandler, err := pcapgo.NewEthernetHandle(DeviceName)
+	if err != nil {
+		panic(fmt.Sprintf("cannot open network interface %s <-- %s", DeviceName, err.Error()))
+	}
+
+	// set BPFFilter
+	pcapBPF, err := pcap.CompileBPFFilter(
+		layers.LinkTypeEthernet, 65535, fmt.Sprintf("tcp and (port %d)", snifferPort))
+	if err != nil {
+		panic(err.Error())
+	}
+	bpfIns := []bpf.RawInstruction{}
+	for _, ins := range pcapBPF {
+		bpfIn := bpf.RawInstruction{
+			Op: ins.Code,
+			Jt: ins.Jt,
+			Jf: ins.Jf,
+			K:  ins.K,
+		}
+		bpfIns = append(bpfIns, bpfIn)
+	}
+
+	err = pcapgoHandler.SetBPF(bpfIns)
+	if err != nil {
+		panic(err.Error())
+	}
+
+	_ = pcapgoHandler.SetCaptureLength(65536)
+	handler = pcapgoHandler
+	return
+}