ipv6 for viewing

README.md

@@ -182,6 +182,14 @@ Received 0 response(s)
 $ nslookup -vc github.com
 ```
 
+#### ipv6でping
+どうするか
+
+```console
+$ ip -6 route
+$ ping -c 1 fe80::1
+```
+
 ### 動作確認の様子
 
 <details><summary>xxx</summary>

cmd/packemon/main.go

@@ -52,19 +52,25 @@ func run(nwInterface string, wantSend bool, debug bool, protocol string) error {
 	tui.DEFAULT_ARP_SENDER_IP = tui.DEFAULT_IP_SOURCE
 
 	if debug {
-		if wantSend && protocol == "tcp-3way-http" {
-			dstIPAddr := make([]byte, 4)
-			binary.BigEndian.PutUint32(dstIPAddr, 0xc0a80a6e) // 192.168.10.110
-			var dstPort uint16 = 0x0050                       // 80
-			httpGet := packemon.NewHTTP()
-			return packemon.EstablishConnectionAndSendPayload(nwInterface, dstIPAddr, dstPort, httpGet.Bytes())
+		if wantSend {
+			if protocol == "tcp-3way-http" {
+				dstIPAddr := make([]byte, 4)
+				binary.BigEndian.PutUint32(dstIPAddr, 0xc0a80a6e) // 192.168.10.110
+				var dstPort uint16 = 0x0050                       // 80
+				httpGet := packemon.NewHTTP()
+				return packemon.EstablishConnectionAndSendPayload(nwInterface, dstIPAddr, dstPort, httpGet.Bytes())
+			}
+
+			// PC再起動とかでdstのMACアドレス変わるみたい。以下で調べてdst正しいのにする
+			// $ ip route
+			// $ arp xxx.xx.xxx.1
+			firsthopMACAddr := [6]byte{0x00, 0x15, 0x5d, 0x8c, 0xc2, 0x6b}
+			return debugMode(wantSend, protocol, netIf, firsthopMACAddr)
 		}
 
-		// PC再起動とかでdstのMACアドレス変わるみたい。以下で調べてdst正しいのにする
-		// $ ip route
-		// $ arp xxx.xx.xxx.1
-		firsthopMACAddr := [6]byte{0x00, 0x15, 0x5d, 0x8c, 0xc2, 0x6b}
-		return debugMode(wantSend, protocol, netIf, firsthopMACAddr)
+		// Monitor の debug は本チャンの networkinterface.go 使うようにする
+		go netIf.Recieve()
+		return debugPrint(netIf.PassiveCh)
 	}
 
 	if wantSend {
@@ -78,6 +84,18 @@ func run(nwInterface string, wantSend bool, debug bool, protocol string) error {
 	}
 }
 
+func debugPrint(passive <-chan *packemon.Passive) error {
+	for p := range passive {
+		if p.HighLayerProto() == "IPv6" {
+			fmt.Println("Passive!")
+			fmt.Printf("%x\n", p.IPv6)
+		}
+
+	}
+
+	return nil
+}
+
 func debugMode(wantSend bool, protocol string, netIf *packemon.NetworkInterface, dstMacAddr [6]byte) error {
 	debugNetIf := debugging.NewDebugNetworkInterface(netIf)
 	defer debugNetIf.Close()

internal/tui/history.go

@@ -71,6 +71,10 @@ func (t *tui) updateTable(passiveCh <-chan *packemon.Passive) {
 				viewIPv4 := &IPv4{passive.IPv4}
 				r.destinationIPAddr = tview.NewTableCell(fmt.Sprintf("DstIP:%s", viewIPv4.StrDstIPAddr())).SetTextColor(tcell.Color51)
 				r.sourceIPAddr = tview.NewTableCell(fmt.Sprintf("SrcIP:%s", viewIPv4.StrSrcIPAddr())).SetTextColor(tcell.Color181)
+			} else if passive.IPv6 != nil {
+				viewIPv6 := &IPv6{passive.IPv6}
+				r.destinationIPAddr = tview.NewTableCell(fmt.Sprintf("DstIP:%s", viewIPv6.StrDstIPAddr())).SetTextColor(tcell.Color51)
+				r.sourceIPAddr = tview.NewTableCell(fmt.Sprintf("SrcIP:%s", viewIPv6.StrSrcIPAddr())).SetTextColor(tcell.Color181)
 			} else {
 				r.destinationIPAddr = tview.NewTableCell(fmt.Sprintf("DstIP:%s", "-")).SetTextColor(tcell.Color51)
 				r.sourceIPAddr = tview.NewTableCell(fmt.Sprintf("SrcIP:%s", "-")).SetTextColor(tcell.Color181)

internal/tui/view.go

@@ -56,6 +56,9 @@ func passiveToViewers(passive *packemon.Passive) []Viewer {
 	if passive.IPv4 != nil {
 		viewers = append(viewers, &IPv4{passive.IPv4})
 	}
+	if passive.IPv6 != nil {
+		viewers = append(viewers, &IPv6{passive.IPv6})
+	}
 	if passive.ICMP != nil {
 		viewers = append(viewers, &ICMP{passive.ICMP})
 	}

internal/tui/view_ipv6.go

@@ -0,0 +1,65 @@
+package tui
+
+import (
+	"fmt"
+	"net"
+
+	"github.com/ddddddO/packemon"
+	"github.com/rivo/tview"
+)
+
+type IPv6 struct {
+	*packemon.IPv6
+}
+
+func (*IPv6) rows() int {
+	return 16
+}
+
+func (*IPv6) columns() int {
+	return 30
+}
+
+func (i *IPv6) viewTable() *tview.Table {
+	table := tview.NewTable().SetBorders(false)
+	table.Box = tview.NewBox().SetBorder(true).SetTitle(" IPv6 Header ").SetTitleAlign(tview.AlignLeft).SetBorderPadding(1, 1, 1, 1)
+
+	table.SetCell(0, 0, tview.NewTableCell(padding("Version")))
+	table.SetCell(0, 1, tview.NewTableCell(padding(fmt.Sprintf("%x", i.Version))))
+
+	table.SetCell(1, 0, tview.NewTableCell(padding("Traffic Class")))
+	table.SetCell(1, 1, tview.NewTableCell(padding(fmt.Sprintf("%x", i.TrafficClass))))
+
+	table.SetCell(2, 0, tview.NewTableCell(padding("Flow Label")))
+	table.SetCell(2, 1, tview.NewTableCell(padding("<under development!>")))
+
+	table.SetCell(3, 0, tview.NewTableCell(padding("Payload Length")))
+	table.SetCell(3, 1, tview.NewTableCell(padding("<under development!>")))
+
+	table.SetCell(4, 0, tview.NewTableCell(padding("Next Header")))
+	table.SetCell(4, 1, tview.NewTableCell(padding(fmt.Sprintf("%x", i.NextHeader))))
+
+	table.SetCell(5, 0, tview.NewTableCell(padding("Hop Limit")))
+	table.SetCell(5, 1, tview.NewTableCell(padding(fmt.Sprintf("%d", i.HopLimit))))
+
+	table.SetCell(6, 0, tview.NewTableCell(padding("Source Address")))
+	table.SetCell(6, 1, tview.NewTableCell(padding(i.StrSrcIPAddr())))
+
+	table.SetCell(7, 0, tview.NewTableCell(padding("Destination Address")))
+	table.SetCell(7, 1, tview.NewTableCell(padding(i.StrDstIPAddr())))
+
+	return table
+}
+
+func (i *IPv6) StrSrcIPAddr() string {
+	return uintsToStrIPv6Addr(i.SrcAddr)
+}
+
+func (i *IPv6) StrDstIPAddr() string {
+	return uintsToStrIPv6Addr(i.DstAddr)
+}
+
+func uintsToStrIPv6Addr(byteAddr []uint8) string {
+	ipv6Addr := net.IP(byteAddr)
+	return ipv6Addr.To16().String()
+}

ipv6.go

@@ -0,0 +1,35 @@
+package packemon
+
+// https://atmarkit.itmedia.co.jp/ait/articles/1201/05/news113.html
+type IPv6 struct {
+	Version       uint8 // 4bit
+	TrafficClass  uint8
+	FlowLabel     uint32 // 20bit
+	PayloadLength uint16
+	NextHeader    uint8
+	HopLimit      uint8
+	SrcAddr       []uint8
+	DstAddr       []uint8
+
+	Option []uint8
+
+	Data []byte
+}
+
+func ParsedIPv6(payload []byte) *IPv6 {
+	return &IPv6{
+		Version:      payload[0] >> 4,
+		TrafficClass: payload[0]<<4 | payload[1]>>4,
+		// FlowLabel: ,
+		// PayloadLength: ,
+		NextHeader: payload[6],
+		HopLimit:   payload[7],
+		SrcAddr:    payload[8:24],
+		DstAddr:    payload[24:40],
+	}
+}
+
+const (
+	IPv6_NEXT_HEADER_UDP    = 0x11
+	IPv6_NEXT_HEADER_ICMPv6 = 0x3a
+)

networkinterface.go

@@ -230,6 +230,12 @@ func ParsedPacket(recieved []byte) *Passive {
 				IPv4:          ipv4,
 			}
 		}
+	case ETHER_TYPE_IPv6:
+		ipv6 := ParsedIPv6(ethernetFrame.Data)
+		return &Passive{
+			EthernetFrame: ethernetFrame,
+			IPv6:          ipv6,
+		}
 
 	default:
 		return &Passive{

passive.go

@@ -8,6 +8,7 @@ type Passive struct {
 	UDP           *UDP
 	ICMP          *ICMP
 	IPv4          *IPv4
+	IPv6          *IPv6
 	ARP           *ARP
 	EthernetFrame *EthernetFrame
 }
@@ -23,6 +24,9 @@ func (p *Passive) HighLayerProto() string {
 	if p.IPv4 != nil {
 		proto = "IPv4"
 	}
+	if p.IPv6 != nil {
+		proto = "IPv6"
+	}
 	if p.ICMP != nil {
 		proto = "ICMP"
 	}