mirror of
https://github.com/bettercap/bettercap
synced 2025-07-11 15:46:59 -07:00
105 lines
2.5 KiB
Go
105 lines
2.5 KiB
Go
package packets
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import (
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"bytes"
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"net"
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"github.com/google/gopacket"
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"github.com/google/gopacket/layers"
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)
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func NewDot11Deauth(a1 net.HardwareAddr, a2 net.HardwareAddr, a3 net.HardwareAddr, seq uint16) (error, []byte) {
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return Serialize(
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&layers.RadioTap{},
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&layers.Dot11{
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Address1: a1,
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Address2: a2,
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Address3: a3,
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Type: layers.Dot11TypeMgmtDeauthentication,
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SequenceNumber: seq,
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},
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&layers.Dot11MgmtDeauthentication{
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Reason: layers.Dot11ReasonClass2FromNonAuth,
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},
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)
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}
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func Dot11Parse(packet gopacket.Packet) (ok bool, radiotap *layers.RadioTap, dot11 *layers.Dot11) {
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ok = false
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radiotap = nil
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dot11 = nil
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radiotapLayer := packet.Layer(layers.LayerTypeRadioTap)
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if radiotapLayer == nil {
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return
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}
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radiotap, ok = radiotapLayer.(*layers.RadioTap)
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if ok == false || radiotap == nil {
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return
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}
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dot11Layer := packet.Layer(layers.LayerTypeDot11)
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if dot11Layer == nil {
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ok = false
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return
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}
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dot11, ok = dot11Layer.(*layers.Dot11)
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return
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}
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func Dot11ParseIDSSID(packet gopacket.Packet) (bool, string) {
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for _, layer := range packet.Layers() {
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if layer.LayerType() == layers.LayerTypeDot11InformationElement {
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dot11info, ok := layer.(*layers.Dot11InformationElement)
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if ok == true && dot11info.ID == layers.Dot11InformationElementIDSSID {
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if len(dot11info.Info) == 0 {
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return true, "<hidden>"
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}
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return true, string(dot11info.Info)
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}
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}
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}
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return false, ""
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}
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func Dot11ParseEncryption(packet gopacket.Packet, dot11 *layers.Dot11) (bool, string) {
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enc := ""
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found := false
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if dot11.Flags.WEP() {
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found = true
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enc = "WEP"
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}
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for _, layer := range packet.Layers() {
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if layer.LayerType() == layers.LayerTypeDot11InformationElement {
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info, ok := layer.(*layers.Dot11InformationElement)
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if ok == true {
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found = true
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if info.ID == layers.Dot11InformationElementIDRSNInfo {
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enc = "WPA2"
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} else if enc == "" && info.ID == layers.Dot11InformationElementIDVendor && info.Length >= 8 && bytes.Compare(info.OUI, []byte{0, 0x50, 0xf2, 1}) == 0 && bytes.HasPrefix(info.Info, []byte{1, 0}) {
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enc = "WPA"
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}
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}
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}
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}
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if found && enc == "" {
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enc = "OPEN"
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}
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return found, enc
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}
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func Dot11IsDataFor(dot11 *layers.Dot11, station net.HardwareAddr) bool {
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// only check data packets of connected stations
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if dot11.Type.MainType() != layers.Dot11TypeData {
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return false
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}
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// packet going to this specific BSSID?
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return bytes.Compare(dot11.Address1, station) == 0
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}
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