132 lines
3.4 KiB
Go
132 lines
3.4 KiB
Go
package data
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import (
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"encoding/binary"
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"fmt"
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"time"
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"github.com/bdlm/log"
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)
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var DEBUG = false
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// SocketMSGType kind of packages
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type SocketMSGType uint32
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const (
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SocketMSGTypeRequest SocketMSGType = (1 << 0)
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SocketMSGTypeResponse SocketMSGType = (1 << 1)
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SocketMSGTypeClient SocketMSGType = (1 << 2)
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SocketMSGTypeStats SocketMSGType = (1 << 3)
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)
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func (a SocketMSGType) Is(b SocketMSGType) bool {
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if DEBUG {
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log.Debugf("SocketType: %x & %x = %x -> %t", a, b, (a & b), (a&b) > 0)
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}
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return (a & b) > 0
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}
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// SocketMSG package of wifictld format
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type SocketMSG struct {
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Types SocketMSGType `json:"types"`
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Client *WifiClient `json:"client,omitempty"`
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}
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func NewSocketMSG(obj []byte) (*SocketMSG, error) {
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msg := &SocketMSG{}
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if err := msg.Unmarshal(obj); err != nil {
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return nil, err
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}
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return msg, nil
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}
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func (msg *SocketMSG) Marshal() ([]byte, error) {
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obj := make([]byte, MaxDataGramSize)
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pos := 0
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binary.BigEndian.PutUint32(obj[pos:(pos+4)], uint32(msg.Types))
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pos += 4
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if msg.Types.Is(SocketMSGTypeClient) {
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obj[pos] = msg.Client.Addr.HardwareAddr[0]
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pos++
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obj[pos] = msg.Client.Addr.HardwareAddr[1]
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pos++
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obj[pos] = msg.Client.Addr.HardwareAddr[2]
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pos++
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obj[pos] = msg.Client.Addr.HardwareAddr[3]
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pos++
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obj[pos] = msg.Client.Addr.HardwareAddr[4]
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pos++
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obj[pos] = msg.Client.Addr.HardwareAddr[5]
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pos++
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binary.BigEndian.PutUint32(obj[pos:(pos+4)], uint32(msg.Client.Time.Unix()))
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pos += 4
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binary.BigEndian.PutUint16(obj[pos:(pos+2)], msg.Client.TryProbe)
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pos += 2
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binary.BigEndian.PutUint16(obj[pos:(pos+2)], msg.Client.TryAuth)
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pos += 2
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if msg.Client.Connected {
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obj[pos] = byte(1)
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}
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pos++
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if msg.Client.Authed {
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obj[pos] = byte(1)
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}
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pos++
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binary.BigEndian.PutUint16(obj[pos:(pos+2)], msg.Client.FreqHighest)
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pos += 2
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binary.BigEndian.PutUint16(obj[pos:(pos+2)], uint16(msg.Client.SignalLowFreq))
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pos += 2
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binary.BigEndian.PutUint16(obj[pos:(pos+2)], uint16(msg.Client.SignalHighFreq))
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//pos += 2
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}
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return obj, nil
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}
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func (msg *SocketMSG) Unmarshal(obj []byte) error {
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if DEBUG {
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log.Debugf("hex unmarshal: %x", obj)
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}
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pos := 0
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msg.Types = SocketMSGType(binary.BigEndian.Uint32(obj[pos:(pos + 4)]))
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pos += 4
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if msg.Types.Is(SocketMSGTypeClient) {
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msg.Client = &WifiClient{
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Addr: HardwareAddr{HardwareAddr: obj[pos:(pos + 6)]},
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Time: time.Unix(int64(binary.BigEndian.Uint32(obj[(pos+6):(pos+10)])), 0),
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TryProbe: binary.BigEndian.Uint16(obj[(pos + 10):(pos + 12)]),
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TryAuth: binary.BigEndian.Uint16(obj[(pos + 12):(pos + 14)]),
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Connected: (obj[(pos+14)] == 1),
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Authed: (obj[(pos+15)] == 1),
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FreqHighest: binary.BigEndian.Uint16(obj[(pos + 16):(pos + 18)]),
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SignalLowFreq: int16(binary.BigEndian.Uint16(obj[(pos + 18):(pos + 20)])),
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SignalHighFreq: int16(binary.BigEndian.Uint16(obj[(pos + 20):(pos + 22)])),
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}
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//pos += 22
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}
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return nil
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}
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func (msg *SocketMSG) String() string {
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answer := ""
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if msg.Types.Is(SocketMSGTypeRequest) {
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answer += "request "
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}
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if msg.Types.Is(SocketMSGTypeResponse) {
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answer += "response "
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}
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if msg.Types.Is(SocketMSGTypeClient) {
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answer += fmt.Sprintf("client(mac=%s freq=%d ssi_l=%d ssi_h=%d tprobe=%d tauth=%d authed=%v time=%s) ", msg.Client.Addr, msg.Client.FreqHighest, msg.Client.SignalLowFreq, msg.Client.SignalHighFreq, msg.Client.TryProbe, msg.Client.TryAuth, msg.Client.Authed, msg.Client.Time.String())
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}
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return answer
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}
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