new: new wifi.ap module

modules/wifi_ap.go

@@ -0,0 +1,74 @@
+package modules
+
+import (
+	"errors"
+	"net"
+	"time"
+
+	"github.com/bettercap/bettercap/core"
+	"github.com/bettercap/bettercap/log"
+	"github.com/bettercap/bettercap/network"
+	"github.com/bettercap/bettercap/packets"
+	"github.com/bettercap/bettercap/session"
+)
+
+var errNoRecon = errors.New("Module wifi.ap requires module wifi.recon to be activated.")
+
+func (w *WiFiModule) parseApConfig() (err error) {
+	var bssid string
+
+	if err, w.apConfig.SSID = w.StringParam("wifi.ap.ssid"); err != nil {
+		return
+	} else if err, bssid = w.StringParam("wifi.ap.bssid"); err != nil {
+		return
+	} else if w.apConfig.BSSID, err = net.ParseMAC(network.NormalizeMac(bssid)); err != nil {
+		return
+	} else if err, w.apConfig.Channel = w.IntParam("wifi.ap.channel"); err != nil {
+		return
+	} else if err, w.apConfig.Encryption = w.BoolParam("wifi.ap.encryption"); err != nil {
+		return
+	}
+
+	return
+}
+
+func (w *WiFiModule) startAp() error {
+	// we need channel hopping and packet injection for this
+	if w.Running() == false {
+		return errNoRecon
+	} else if w.apRunning {
+		return session.ErrAlreadyStarted
+	}
+
+	go func() {
+		w.apRunning = true
+		defer func() {
+			w.apRunning = false
+		}()
+
+		enc := core.Yellow("WPA2")
+		if w.apConfig.Encryption == false {
+			enc = core.Green("Open")
+		}
+		log.Info("Sending beacons as SSID %s (%s) on channel %d (%s).",
+			core.Bold(w.apConfig.SSID),
+			w.apConfig.BSSID.String(),
+			w.apConfig.Channel,
+			enc)
+
+		for seqn := uint16(0); w.Running(); seqn++ {
+			w.writes.Add(1)
+			defer w.writes.Done()
+
+			if err, pkt := packets.NewDot11Beacon(w.apConfig, seqn); err != nil {
+				log.Error("Could not create beacon packet: %s", err)
+			} else {
+				w.injectPacket(pkt)
+			}
+
+			time.Sleep(100 * time.Millisecond)
+		}
+	}()
+
+	return nil
+}