func (p *Packet) Unpack(buf *packet.Buffer) error {
var versclass uint8
buf.ReadN(&versclass)
p.Version = versclass >> 4
p.Class =
uint8((binary.BigEndian.Uint16(buf.LayerBytes()[0:2]) >> 4) & 0x00FF)
p.Label =
binary.BigEndian.Uint32(buf.LayerBytes()[0:4]) & 0x000FFFFF
buf.Next(3)
buf.ReadN(&p.Length)
buf.ReadN(&p.NextHdr)
buf.ReadN(&p.HopLimit)
p.SrcAddr = net.IP(buf.Next(16))
p.DstAddr = net.IP(buf.Next(16))
/* TODO: Options */
return nil
}
func (p *Packet) Unpack(buf *packet.Buffer) error {
var versihl uint8
buf.ReadN(&versihl)
p.Version = versihl >> 4
p.IHL = versihl & 0x0F
buf.ReadN(&p.TOS)
buf.ReadN(&p.Length)
buf.ReadN(&p.Id)
var flagsfrag uint16
buf.ReadN(&flagsfrag)
p.Flags = Flags(flagsfrag >> 13)
p.FragOff = flagsfrag & 0x1FFF
buf.ReadN(&p.TTL)
buf.ReadN(&p.Protocol)
buf.ReadN(&p.Checksum)
p.SrcAddr = net.IP(buf.Next(4))
p.DstAddr = net.IP(buf.Next(4))
/* TODO: Options */
return nil
}
func (p *Packet) Unpack(buf *packet.Buffer) error {
buf.ReadN(&p.Type)
buf.ReadN(&p.AddrType)
buf.ReadN(&p.AddrLen)
p.SrcAddr = net.HardwareAddr(buf.Next(int(p.AddrLen)))
buf.Next(8 - int(p.AddrLen))
buf.ReadN(&p.EtherType)
return nil
}
func (p *Packet) Unpack(buf *packet.Buffer) error {
p.DstAddr = net.HardwareAddr(buf.Next(6))
p.SrcAddr = net.HardwareAddr(buf.Next(6))
buf.ReadN(&p.Type)
if p.Type < 0x0600 {
p.Length = uint16(p.Type)
p.Type = LLC
}
return nil
}
func (p *Packet) Unpack(buf *packet.Buffer) error {
buf.ReadN(&p.HWType)
buf.ReadN(&p.ProtoType)
buf.ReadN(&p.HWAddrLen)
buf.ReadN(&p.ProtoAddrLen)
buf.ReadN(&p.Operation)
p.HWSrcAddr = net.HardwareAddr(buf.Next(int(p.HWAddrLen)))
p.ProtoSrcAddr = net.IP(buf.Next(int(p.ProtoAddrLen)))
p.HWDstAddr = net.HardwareAddr(buf.Next(int(p.HWAddrLen)))
p.ProtoDstAddr = net.IP(buf.Next(int(p.ProtoAddrLen)))
return nil
}
func (p *Packet) Unpack(buf *packet.Buffer) error {
buf.ReadN(&p.SrcPort)
buf.ReadN(&p.DstPort)
buf.ReadN(&p.Seq)
buf.ReadN(&p.Ack)
var offns uint8
buf.ReadN(&offns)
p.DataOff = offns >> 4
if offns&0x01 != 0 {
p.Flags |= NS
}
var flags uint8
buf.ReadN(&flags)
if flags&0x01 != 0 {
p.Flags |= Fin
}
if flags&0x02 != 0 {
p.Flags |= Syn
}
if flags&0x04 != 0 {
p.Flags |= Rst
}
if flags&0x08 != 0 {
p.Flags |= PSH
}
if flags&0x10 != 0 {
p.Flags |= Ack
}
if flags&0x20 != 0 {
p.Flags |= Urg
}
if flags&0x40 != 0 {
p.Flags |= ECE
}
if flags&0x80 != 0 {
p.Flags |= Cwr
}
buf.ReadN(&p.WindowSize)
buf.ReadN(&p.Checksum)
buf.ReadN(&p.Urgent)
options:
for buf.LayerLen() < int(p.DataOff)*4 {
var opt_type OptType
buf.ReadN(&opt_type)
switch opt_type {
case End: /* end of options */
break options
case Nop: /* padding */
continue
default:
opt := Option{Type: opt_type}
buf.ReadN(&opt.Len)
opt.Data = buf.Next(int(opt.Len) - 2)
p.Options = append(p.Options, opt)
}
}
/* remove padding */
if buf.LayerLen() < int(p.DataOff)*4 {
buf.Next(int(p.DataOff)*4 - buf.LayerLen())
}
return nil
}
func (p *Packet) Unpack(buf *packet.Buffer) error {
p.Data = buf.Next(buf.Len())
return nil
}