filter

Documentation

Index

• Constants
• Variables
• type Filter
  • func New(matches Matches) *Filter
  • func NewAllowAll() *Filter
  • func NewAllowNone() *Filter
  • func (f *Filter) RunIn(b []byte, q *packet.QDecode, rf RunFlags) Response
  • func (f *Filter) RunOut(b []byte, q *packet.QDecode, rf RunFlags) Response
• type IP
• type IPPortRange
  • func (ipr IPPortRange) String() string
• type Match
  • func (m Match) Clone() (res Match)
  • func (m Match) String() string
• type Matches
  • func (m Matches) Clone() (res Matches)
• type PortRange
  • func (pr PortRange) String() string
• type Response
  • func (r Response) String() string
• type RunFlags

Constants

const IPAny = IP(0)

const LRU_MAX = 512 // max entries in UDP LRU cache

Variables

var IPPortRangeAny = IPPortRange{IPAny, PortRangeAny}

var MatchAllowAll = Matches{
	Match{[]IPPortRange{IPPortRangeAny}, []IP{IPAny}},
}

var NewIP = packet.NewIP

var PortRangeAny = PortRange{0, 65535}

Types

type Filter

type Filter struct {
	// contains filtered or unexported fields
}

func New

func New(matches Matches) *Filter

func NewAllowAll

func NewAllowAll() *Filter

func NewAllowNone

func NewAllowNone() *Filter

func (*Filter) RunIn

func (f *Filter) RunIn(b []byte, q *packet.QDecode, rf RunFlags) Response

func (*Filter) RunOut

func (f *Filter) RunOut(b []byte, q *packet.QDecode, rf RunFlags) Response

type IP

type IP = packet.IP

type IPPortRange

type IPPortRange struct {
	IP    IP
	Ports PortRange
}

func (IPPortRange) String

func (ipr IPPortRange) String() string

type Match

type Match struct {
	DstPorts []IPPortRange
	SrcIPs   []IP
}

func (Match) Clone

func (m Match) Clone() (res Match)

func (Match) String

func (m Match) String() string

type Matches

type Matches []Match

func (Matches) Clone

func (m Matches) Clone() (res Matches)

type PortRange

type PortRange struct {
	First, Last uint16
}

func (PortRange) String

func (pr PortRange) String() string

type Response

type Response int

const (
	Drop Response = iota
	Accept
)

func (Response) String

func (r Response) String() string

type RunFlags

type RunFlags int

const (
	LogDrops RunFlags = 1 << iota
	LogAccepts
	HexdumpDrops
	HexdumpAccepts
)