misc: small fix or general refactoring i did not bother commenting

modules/net_sniff_tcp.go

@@ -0,0 +1,45 @@
+package modules
+
+import (
+	"fmt"
+
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+
+	"github.com/evilsocket/islazy/tui"
+)
+
+var tcpParsers = []func(*layers.IPv4, gopacket.Packet, *layers.TCP) bool{
+	sniParser,
+	ntlmParser,
+	httpParser,
+	ftpParser,
+}
+
+func onTCP(ip *layers.IPv4, pkt gopacket.Packet, verbose bool) {
+	tcp := pkt.Layer(layers.LayerTypeTCP).(*layers.TCP)
+	for _, parser := range tcpParsers {
+		if parser(ip, pkt, tcp) {
+			return
+		}
+	}
+
+	if verbose {
+		NewSnifferEvent(
+			pkt.Metadata().Timestamp,
+			"tcp",
+			fmt.Sprintf("%s:%s", ip.SrcIP, vPort(tcp.SrcPort)),
+			fmt.Sprintf("%s:%s", ip.DstIP, vPort(tcp.DstPort)),
+			SniffData{
+				"Size": len(ip.Payload),
+			},
+			"%s %s:%s > %s:%s %s",
+			tui.Wrap(tui.BACKLIGHTBLUE+tui.FOREBLACK, "tcp"),
+			vIP(ip.SrcIP),
+			vPort(tcp.SrcPort),
+			vIP(ip.DstIP),
+			vPort(tcp.DstPort),
+			tui.Dim(fmt.Sprintf("%d bytes", len(ip.Payload))),
+		).Push()
+	}
+}