gophertun

package module
v0.0.0-...-62ca0bc Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Nov 17, 2018 License: MIT Imports: 14 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	DefaultMRU                   = 65536
	DefaultMTU                   = 1500
	DefaultTTL                   = 64
	DefaultPostProcessBufferSize = 16
	EthernetHeaderSize           = 14
)

Variables

View Source 
var (
	ErrUnsupportedFeature  = errors.New("gophertun: feature unsupported on this platform")
	ErrUnsupportedProtocol = errors.New("gophertun: protocol unsupported")
)

Functions

This section is empty.

Types

type Codec 

type Codec interface {
	Decode(buf []byte) error
	Encode() ([]byte, error)
	NextLayer() Codec
}

type CodecARP 

type CodecARP struct {
	HardwareType       uint16
	ProtocolType       EtherType
	HardwareSize       uint8
	ProtocolSize       uint8
	Opcode             uint16
	SenderHardwareAddr net.HardwareAddr
	SenderProtocolAddr net.IP
	TargetHardwareAddr net.HardwareAddr
	TargetProtocolAddr net.IP
	Extra              []byte
}

func (*CodecARP) Decode 

func (c *CodecARP) Decode(buf []byte) error

func (*CodecARP) Encode 

func (c *CodecARP) Encode() ([]byte, error)

func (*CodecARP) NextLayer 

func (c *CodecARP) NextLayer() Codec

func (*CodecARP) String 

func (c *CodecARP) String() string

type CodecEthernet 

type CodecEthernet struct {
	Destination net.HardwareAddr
	Source      net.HardwareAddr
	Type        EtherType
	Payload     Codec
}

func (*CodecEthernet) Decode 

func (c *CodecEthernet) Decode(buf []byte) error

func (*CodecEthernet) Encode 

func (c *CodecEthernet) Encode() ([]byte, error)

func (*CodecEthernet) NextLayer 

func (c *CodecEthernet) NextLayer() Codec

func (*CodecEthernet) String 

func (c *CodecEthernet) String() string

type CodecICMP 

type CodecICMP struct {
	Type     uint8
	Code     uint8
	Checksum uint16
	Omni     uint32
	Payload  Codec
}

func (*CodecICMP) Decode 

func (c *CodecICMP) Decode(buf []byte) error

func (*CodecICMP) Encode 

func (c *CodecICMP) Encode() ([]byte, error)

func (*CodecICMP) NextLayer 

func (c *CodecICMP) NextLayer() Codec

func (*CodecICMP) String 

func (c *CodecICMP) String() string

type CodecICMPv6 

type CodecICMPv6 struct {
	Type     uint8
	Code     uint8
	Checksum uint16
	Omni     uint32
	Payload  Codec
	// contains filtered or unexported fields
}

func (*CodecICMPv6) Decode 

func (c *CodecICMPv6) Decode(buf []byte) error

func (*CodecICMPv6) Encode 

func (c *CodecICMPv6) Encode() ([]byte, error)

func (*CodecICMPv6) NextLayer 

func (c *CodecICMPv6) NextLayer() Codec

func (*CodecICMPv6) String 

func (c *CodecICMPv6) String() string

type CodecIPv4 

type CodecIPv4 struct {
	Version        uint8
	HeaderLength   uint8 // raw * 4
	DSCP           uint8
	ECN            uint8
	TotalLength    uint16
	Identification uint16
	Flags          uint8
	FragmentOffset uint16 // raw * 8
	TTL            uint8
	Protocol       uint8
	HeaderChecksum uint16
	Source         net.IP
	Destination    net.IP
	Extra1         []byte
	Payload        Codec
	Extra2         []byte
}

func (*CodecIPv4) Decode 

func (c *CodecIPv4) Decode(buf []byte) error

func (*CodecIPv4) Encode 

func (c *CodecIPv4) Encode() ([]byte, error)

func (*CodecIPv4) NextLayer 

func (c *CodecIPv4) NextLayer() Codec

func (*CodecIPv4) String 

func (c *CodecIPv4) String() string

type CodecIPv6 

type CodecIPv6 struct {
	Version       uint8
	DSCP          uint8
	ECN           uint8
	Flowlabel     uint32
	PayloadLength uint16
	NextHeader    uint8
	HopLimit      uint8
	Source        net.IP
	Destination   net.IP
	Payload       Codec
	Extra         []byte
}

func (*CodecIPv6) Decode 

func (c *CodecIPv6) Decode(buf []byte) error

func (*CodecIPv6) Encode 

func (c *CodecIPv6) Encode() ([]byte, error)

func (*CodecIPv6) NextLayer 

func (c *CodecIPv6) NextLayer() Codec

func (*CodecIPv6) String 

func (c *CodecIPv6) String() string

type CodecIPv6Fragment 

type CodecIPv6Fragment struct {
	NextHeader     uint8
	Reserved1      uint8
	FragmentOffset uint16 // raw * 8
	Reserved2      uint8
	MoreFragment   bool
	Identification uint32
	Payload        Codec
	// contains filtered or unexported fields
}

func (*CodecIPv6Fragment) Decode 

func (c *CodecIPv6Fragment) Decode(buf []byte) error

func (*CodecIPv6Fragment) Encode 

func (c *CodecIPv6Fragment) Encode() ([]byte, error)

func (*CodecIPv6Fragment) NextLayer 

func (c *CodecIPv6Fragment) NextLayer() Codec

func (*CodecIPv6Fragment) String 

func (c *CodecIPv6Fragment) String() string

type CodecIPv6HopByHop 

type CodecIPv6HopByHop struct {
	NextHeader   uint8
	HeaderLength uint16 // raw * 8 + 8
	FirstOption  *CodecIPv6HopByHopOption
	Payload      Codec
	// contains filtered or unexported fields
}

func (*CodecIPv6HopByHop) Decode 

func (c *CodecIPv6HopByHop) Decode(buf []byte) error

func (*CodecIPv6HopByHop) Encode 

func (c *CodecIPv6HopByHop) Encode() ([]byte, error)

func (*CodecIPv6HopByHop) NextLayer 

func (c *CodecIPv6HopByHop) NextLayer() Codec

func (*CodecIPv6HopByHop) String 

func (c *CodecIPv6HopByHop) String() string

type CodecIPv6HopByHopOption 

type CodecIPv6HopByHopOption struct {
	Type       uint8
	DataLength uint8
	Data       Codec
	NextOption *CodecIPv6HopByHopOption
}

func (*CodecIPv6HopByHopOption) Decode 

func (c *CodecIPv6HopByHopOption) Decode(buf []byte) error

func (*CodecIPv6HopByHopOption) Encode 

func (c *CodecIPv6HopByHopOption) Encode() ([]byte, error)

func (*CodecIPv6HopByHopOption) NextLayer 

func (c *CodecIPv6HopByHopOption) NextLayer() Codec

func (*CodecIPv6HopByHopOption) String 

func (c *CodecIPv6HopByHopOption) String() string

type CodecRaw 

type CodecRaw struct {
	Payload []byte
	Err     error
}

func (*CodecRaw) Decode 

func (c *CodecRaw) Decode(buf []byte) error

func (*CodecRaw) Encode 

func (c *CodecRaw) Encode() ([]byte, error)

func (*CodecRaw) NextLayer 

func (c *CodecRaw) NextLayer() Codec

func (*CodecRaw) String 

func (c *CodecRaw) String() string

type EtherType 

type EtherType uint16
const (
	EtherTypeIPv4 EtherType = 0x0800
	EtherTypeARP  EtherType = 0x0806
	EtherTypeIPv6 EtherType = 0x86dd
)

type IPAddress 

type IPAddress struct {
	Net  *net.IPNet
	Peer *net.IPNet
}

type Packet 

type Packet struct {
	Format    PayloadFormat
	EtherType EtherType
	Payload   []byte
	Extra     []byte
}

func (*Packet) ConvertTo 

func (p *Packet) ConvertTo(outputFormat PayloadFormat, hwAddr net.HardwareAddr) (*Packet, error)

type PayloadFormat 

type PayloadFormat int
const (
	FormatUnknown PayloadFormat = iota
	FormatIP
	FormatEthernet
)

type TunTapConfig 

type TunTapConfig struct {
	NameHint              string
	AllowNameSuffix       bool
	PreferredNativeFormat PayloadFormat
	ExtraFlags            uint32
}

func (*TunTapConfig) Create 

func (c *TunTapConfig) Create() (Tunnel, error)

type TunTapImpl 

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

func (*TunTapImpl) AddIPAddresses 

func (t *TunTapImpl) AddIPAddresses(addresses []*IPAddress) (int, error)

func (*TunTapImpl) Close 

func (t *TunTapImpl) Close() error

func (*TunTapImpl) MTU 

func (t *TunTapImpl) MTU() (int, error)

func (*TunTapImpl) Name 

func (t *TunTapImpl) Name() (string, error)

func (*TunTapImpl) NativeFormat 

func (t *TunTapImpl) NativeFormat() PayloadFormat

func (*TunTapImpl) Open 

func (t *TunTapImpl) Open(outputFormat PayloadFormat) error

func (*TunTapImpl) OutputFormat 

func (t *TunTapImpl) OutputFormat() PayloadFormat

func (*TunTapImpl) RawFile 

func (t *TunTapImpl) RawFile() (*os.File, error)

func (*TunTapImpl) Read 

func (t *TunTapImpl) Read() (*Packet, error)

func (*TunTapImpl) SetMTU 

func (t *TunTapImpl) SetMTU(mtu int) error

func (*TunTapImpl) Write 

func (t *TunTapImpl) Write(packet *Packet, pmtud bool) error

type Tunnel 

type Tunnel interface {
	AddIPAddresses(addresses []*IPAddress) (int, error)
	Close() error
	MTU() (int, error)
	Name() (string, error)
	NativeFormat() PayloadFormat
	Open(outputFormat PayloadFormat) error
	OutputFormat() PayloadFormat
	RawFile() (*os.File, error)
	Read() (*Packet, error)
	SetMTU(mtu int) error
	Write(packet *Packet, pmtud bool) error
}

type TunnelConfig 

type TunnelConfig interface {
	Create() (Tunnel, error)
}

type VxlanConfig 

type VxlanConfig struct {
	VxlanConn           net.PacketConn
	VxlanNetworkID      uint32
	VxlanTunnelEndpoint net.Addr
}

func (*VxlanConfig) Create 

func (c *VxlanConfig) Create() (Tunnel, error)

type VxlanImpl 

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

func (*VxlanImpl) AddIPAddresses 

func (t *VxlanImpl) AddIPAddresses(addresses []*IPAddress) (int, error)

func (*VxlanImpl) Close 

func (t *VxlanImpl) Close() error

func (*VxlanImpl) MTU 

func (t *VxlanImpl) MTU() (int, error)

func (*VxlanImpl) Name 

func (t *VxlanImpl) Name() (string, error)

func (*VxlanImpl) NativeFormat 

func (t *VxlanImpl) NativeFormat() PayloadFormat

func (*VxlanImpl) Open 

func (t *VxlanImpl) Open(outputFormat PayloadFormat) error

func (*VxlanImpl) OutputFormat 

func (t *VxlanImpl) OutputFormat() PayloadFormat

func (*VxlanImpl) RawFile 

func (t *VxlanImpl) RawFile() (*os.File, error)

func (*VxlanImpl) Read 

func (t *VxlanImpl) Read() (*Packet, error)

func (*VxlanImpl) SetMTU 

func (t *VxlanImpl) SetMTU(mtu int) error

func (*VxlanImpl) Write 

func (t *VxlanImpl) Write(packet *Packet, pmtud bool) error

Source Files

View all Source files

Directories

Path Synopsis
example
tuntap command
vxlan command

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