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

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This commit is contained in:
evilsocket 2018-02-16 22:44:25 +01:00
commit 447aaede5b
2 changed files with 38 additions and 33 deletions
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42
modules/wifi_recon.go
View file

@ -13,6 +13,7 @@ import (
"github.com/evilsocket/bettercap-ng/core"
"github.com/evilsocket/bettercap-ng/log"
"github.com/evilsocket/bettercap-ng/network"
"github.com/evilsocket/bettercap-ng/packets"
"github.com/evilsocket/bettercap-ng/session"
"github.com/google/gopacket"
@ -213,47 +214,22 @@ func (w *WDiscovery) Show(by string) error {
return nil
}
func (w *WDiscovery) buildDeauthPkt(address1 net.HardwareAddr, address2 net.HardwareAddr, address3 net.HardwareAddr, _type layers.Dot11Type, reason layers.Dot11Reason, seq uint16) []byte {
var (
deauthLayer layers.Dot11MgmtDeauthentication
dot11Layer layers.Dot11
radioTapLayer layers.RadioTap
)
deauthLayer.Reason = reason
dot11Layer.Address1 = address1
dot11Layer.Address2 = address2
dot11Layer.Address3 = address3
dot11Layer.Type = _type
dot11Layer.SequenceNumber = seq
buffer := gopacket.NewSerializeBuffer()
gopacket.SerializeLayers(buffer,
gopacket.SerializeOptions{
ComputeChecksums: true,
FixLengths: true,
},
&radioTapLayer,
&dot11Layer,
&deauthLayer,
)
return buffer.Bytes()
}
func (w *WDiscovery) sendDeauthPacket(ap net.HardwareAddr, client net.HardwareAddr) {
for seq := uint16(0); seq < 64; seq++ {
pkt := w.buildDeauthPkt(ap, client, ap, layers.Dot11TypeMgmtDeauthentication, layers.Dot11ReasonClass2FromNonAuth, seq)
if err := w.handle.WritePacketData(pkt); err != nil {
if err, pkt := packets.NewDot11Deauth(ap, client, ap, layers.Dot11TypeMgmtDeauthentication, layers.Dot11ReasonClass2FromNonAuth, seq); err != nil {
log.Error("Could not create deauth packet: %s", err)
continue
} else if err := w.handle.WritePacketData(pkt); err != nil {
log.Error("Could not send deauth packet: %s", err)
continue
} else {
time.Sleep(2 * time.Millisecond)
}
pkt = w.buildDeauthPkt(client, ap, ap, layers.Dot11TypeMgmtDeauthentication, layers.Dot11ReasonClass2FromNonAuth, seq)
if err := w.handle.WritePacketData(pkt); err != nil {
if err, pkt := packets.NewDot11Deauth(client, ap, ap, layers.Dot11TypeMgmtDeauthentication, layers.Dot11ReasonClass2FromNonAuth, seq); err != nil {
log.Error("Could not create deauth packet: %s", err)
continue
} else if err := w.handle.WritePacketData(pkt); err != nil {
log.Error("Could not send deauth packet: %s", err)
continue
} else {

29
packets/dot11.go Normal file
View file

@ -0,0 +1,29 @@
package packets
import (
"net"
"github.com/google/gopacket/layers"
)
func NewDot11Deauth(a1 net.HardwareAddr, a2 net.HardwareAddr, a3 net.HardwareAddr, t layers.Dot11Type, reason layers.Dot11Reason, seq uint16) (error, []byte) {
var (
deauth layers.Dot11MgmtDeauthentication
dot11Layer layers.Dot11
radioTapLayer layers.RadioTap
)
deauth.Reason = reason
dot11Layer.Address1 = a1
dot11Layer.Address2 = a2
dot11Layer.Address3 = a3
dot11Layer.Type = t
dot11Layer.SequenceNumber = seq
return Serialize(
&radioTapLayer,
&dot11Layer,
&deauth,
)
}