1 files changed, 103 insertions, 0 deletions
diff --git a/att script/5_v6_篡改/code/src/fakedns6/ipv6util.go b/att script/5_v6_篡改/code/src/fakedns6/ipv6util.go
new file mode 100644
index 0000000..09245d3
--- /dev/null
+++ b/att script/5_v6_篡改/code/src/fakedns6/ipv6util.go
@@ -0,0 +1,103 @@
+package main
+
+import (
+	"encoding/hex"
+	"fmt"
+	"net"
+	"os/exec"
+	"strings"
+	"syscall"
+	"unsafe"
+)
+
+type router struct {
+	ifaces []net.Interface
+	addrs  []net.IP
+	v6     routeSlice
+}
+type routeSlice []*rtInfo
+
+type rtInfo struct {
+	// Dst              net.IPNet
+	Gateway, PrefSrc net.IP
+	OutputIface      uint32
+	Priority         uint32
+}
+
+func getv6Gateway() (net.IP, error) {
+	rtr := &router{}
+
+	tab, err := syscall.NetlinkRIB(syscall.RTM_GETROUTE, syscall.AF_INET6)
+	if err != nil {
+		return nil, err
+	}
+
+	msgs, err := syscall.ParseNetlinkMessage(tab)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, m := range msgs {
+		switch m.Header.Type {
+		case syscall.NLMSG_DONE:
+			break
+		case syscall.RTM_NEWROUTE:
+			// rtmsg := (*syscall.RtMsg)(unsafe.Pointer(&m.Data[0]))
+			attrs, err := syscall.ParseNetlinkRouteAttr(&m)
+			if err != nil {
+				return nil, err
+			}
+			routeInfo := rtInfo{}
+			rtr.v6 = append(rtr.v6, &routeInfo)
+			for _, attr := range attrs {
+				switch attr.Attr.Type {
+				// case syscall.RTA_DST:
+				// 	routeInfo.Dst.IP = net.IP(attr.Value)
+				// 	routeInfo.Dst.Mask = net.CIDRMask(int(rtmsg.Dst_len), len(attr.Value)*8)
+				case syscall.RTA_GATEWAY:
+					routeInfo.Gateway = net.IP(attr.Value)
+				case syscall.RTA_OIF:
+					routeInfo.OutputIface = *(*uint32)(unsafe.Pointer(&attr.Value[0]))
+				case syscall.RTA_PRIORITY:
+					routeInfo.Priority = *(*uint32)(unsafe.Pointer(&attr.Value[0]))
+				case syscall.RTA_PREFSRC:
+					routeInfo.PrefSrc = net.IP(attr.Value)
+				}
+			}
+		}
+	}
+	ips := []net.IP{}
+	for _, rt := range rtr.v6 {
+		if rt.Gateway != nil {
+			ips = append(ips, rt.Gateway)
+		}
+	}
+	return ips[0], nil
+}
+
+func getGatewayV6Mac(ifacename string, gwIP net.IP) (net.HardwareAddr, error) {
+	if debugOutput {
+		println("邻居发现--使用网卡接口为:" + ifacename)
+	}
+	out, err := exec.Command("ip", "-6", "neighbor", "show", "dev", ifacename).Output()
+	if err != nil {
+		println(err.Error())
+	} else {
+		outlines := strings.Split(string(out), "/n")
+		for _, line := range outlines {
+			linelist := strings.Split(line, " ")
+			// 与网关对应的MAC地址
+			if linelist[0] == gwIP.String() {
+
+				maclist := strings.Split(linelist[2], ":")
+				var macbyte []byte
+				for _, m := range maclist {
+					b, _ := hex.DecodeString(m)
+					macbyte = append(macbyte, b[0])
+				}
+				return net.HardwareAddr(macbyte), nil
+			}
+		}
+	}
+	return nil, fmt.Errorf("无法找到网关" + gwIP.String() + "对应的MAC地址")
+}