clashtcpip

package
v0.4.2 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Nov 26, 2024 License: GPL-2.0 Imports: 6 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	ICMPTypePingRequest  byte = 0x8
	ICMPTypePingResponse byte = 0x0
)
View Source 
const (
	ICMPv6HeaderSize = 4

	ICMPv6MinimumSize = 8

	ICMPv6PayloadOffset = 8

	ICMPv6EchoMinimumSize = 8

	ICMPv6ErrorHeaderSize = 8

	ICMPv6DstUnreachableMinimumSize = ICMPv6MinimumSize

	ICMPv6PacketTooBigMinimumSize = ICMPv6MinimumSize

	ICMPv6ChecksumOffset = 2

	NDPHopLimit = 255
)
View Source 
const (
	FlagDontFragment = 1 << 1
	FlagMoreFragment = 1 << 2
)
View Source 
const (
	IPv4HeaderSize = 20

	IPv4Version = 4

	IPv4OptionsOffset   = 20
	IPv4PacketMinLength = IPv4OptionsOffset
)
View Source 
const (
	IPv6PayloadLenOffset = 4

	IPv6NextHeaderOffset = 6

	IPv6FixedHeaderSize = v6DstAddr + IPv6AddressSize
)
View Source 
const (
	IPv6MinimumSize = IPv6FixedHeaderSize

	IPv6AddressSize = 16

	IPv6Version = 6

	IPv6MinimumMTU = 1280
)
View Source 
const (
	TCPFin uint16 = 1 << 0
	TCPSyn uint16 = 1 << 1
	TCPRst uint16 = 1 << 2
	TCPPuh uint16 = 1 << 3
	TCPAck uint16 = 1 << 4
	TCPUrg uint16 = 1 << 5
	TCPEce uint16 = 1 << 6
	TCPEwr uint16 = 1 << 7
	TCPNs  uint16 = 1 << 8
)
View Source 
const (
	IPv4IHLStride = 4
)
View Source 
const TCPHeaderSize = 20
View Source 
const UDPHeaderSize = 8

Variables

View Source 
var (
	ErrInvalidLength    = errors.New("invalid packet length")
	ErrInvalidIPVersion = errors.New("invalid ip version")
	ErrInvalidChecksum  = errors.New("invalid checksum")
)
View Source 
var SumFnc = SumCompat

Functions

func Checksum 

func Checksum(sum uint32, b []byte) (answer [2]byte)

Checksum for Internet Protocol family headers

func IPVersion 

func IPVersion(b []byte) int

func SetIPv4 

func SetIPv4(packet []byte)

func Sum 

func Sum(b []byte) uint32

func SumAVX2 

func SumAVX2(data []byte) uint32

func SumCompat 

func SumCompat(b []byte) (sum uint32)

Types

type ICMPPacket 

type ICMPPacket []byte

func (ICMPPacket) Checksum 

func (p ICMPPacket) Checksum() uint16

func (ICMPPacket) Code 

func (p ICMPPacket) Code() byte

func (ICMPPacket) ResetChecksum 

func (p ICMPPacket) ResetChecksum()

func (ICMPPacket) SetChecksum 

func (p ICMPPacket) SetChecksum(sum [2]byte)

func (ICMPPacket) SetType 

func (p ICMPPacket) SetType(v ICMPType)

func (ICMPPacket) Type 

func (p ICMPPacket) Type() ICMPType

type ICMPType 

type ICMPType = byte

type ICMPv6Code 

type ICMPv6Code byte
const (
	ICMPv6NetworkUnreachable ICMPv6Code = 0
	ICMPv6Prohibited         ICMPv6Code = 1
	ICMPv6BeyondScope        ICMPv6Code = 2
	ICMPv6AddressUnreachable ICMPv6Code = 3
	ICMPv6PortUnreachable    ICMPv6Code = 4
	ICMPv6Policy             ICMPv6Code = 5
	ICMPv6RejectRoute        ICMPv6Code = 6
)
const (
	ICMPv6HopLimitExceeded  ICMPv6Code = 0
	ICMPv6ReassemblyTimeout ICMPv6Code = 1
)
const (
	ICMPv6ErroneousHeader ICMPv6Code = 0

	ICMPv6UnknownHeader ICMPv6Code = 1

	ICMPv6UnknownOption ICMPv6Code = 2
)
const ICMPv6UnusedCode ICMPv6Code = 0

type ICMPv6Packet 

type ICMPv6Packet []byte

func (ICMPv6Packet) Checksum 

func (b ICMPv6Packet) Checksum() uint16

func (ICMPv6Packet) Code 

func (b ICMPv6Packet) Code() ICMPv6Code

func (ICMPv6Packet) DestinationPort 

func (ICMPv6Packet) DestinationPort() uint16

func (ICMPv6Packet) Ident 

func (b ICMPv6Packet) Ident() uint16

func (ICMPv6Packet) MTU 

func (b ICMPv6Packet) MTU() uint32

func (ICMPv6Packet) MessageBody 

func (b ICMPv6Packet) MessageBody() []byte

func (ICMPv6Packet) Payload 

func (b ICMPv6Packet) Payload() []byte

func (ICMPv6Packet) ResetChecksum 

func (b ICMPv6Packet) ResetChecksum(psum uint32)

func (ICMPv6Packet) Sequence 

func (b ICMPv6Packet) Sequence() uint16

func (ICMPv6Packet) SetChecksum 

func (b ICMPv6Packet) SetChecksum(sum [2]byte)

func (ICMPv6Packet) SetCode 

func (b ICMPv6Packet) SetCode(c ICMPv6Code)

func (ICMPv6Packet) SetDestinationPort 

func (ICMPv6Packet) SetDestinationPort(uint16)

func (ICMPv6Packet) SetIdent 

func (b ICMPv6Packet) SetIdent(ident uint16)

func (ICMPv6Packet) SetMTU 

func (b ICMPv6Packet) SetMTU(mtu uint32)

func (ICMPv6Packet) SetSequence 

func (b ICMPv6Packet) SetSequence(sequence uint16)

func (ICMPv6Packet) SetSourcePort 

func (ICMPv6Packet) SetSourcePort(uint16)

func (ICMPv6Packet) SetType 

func (b ICMPv6Packet) SetType(t ICMPv6Type)

func (ICMPv6Packet) SetTypeSpecific 

func (b ICMPv6Packet) SetTypeSpecific(val uint32)

func (ICMPv6Packet) SourcePort 

func (ICMPv6Packet) SourcePort() uint16

func (ICMPv6Packet) Type 

func (b ICMPv6Packet) Type() ICMPv6Type

func (ICMPv6Packet) TypeSpecific 

func (b ICMPv6Packet) TypeSpecific() uint32

type ICMPv6Type 

type ICMPv6Type byte
const (
	ICMPv6DstUnreachable ICMPv6Type = 1
	ICMPv6PacketTooBig   ICMPv6Type = 2
	ICMPv6TimeExceeded   ICMPv6Type = 3
	ICMPv6ParamProblem   ICMPv6Type = 4
	ICMPv6EchoRequest    ICMPv6Type = 128
	ICMPv6EchoReply      ICMPv6Type = 129

	ICMPv6RouterSolicit   ICMPv6Type = 133
	ICMPv6RouterAdvert    ICMPv6Type = 134
	ICMPv6NeighborSolicit ICMPv6Type = 135
	ICMPv6NeighborAdvert  ICMPv6Type = 136
	ICMPv6RedirectMsg     ICMPv6Type = 137

	ICMPv6MulticastListenerQuery  ICMPv6Type = 130
	ICMPv6MulticastListenerReport ICMPv6Type = 131
	ICMPv6MulticastListenerDone   ICMPv6Type = 132
)

func (ICMPv6Type) IsErrorType 

func (typ ICMPv6Type) IsErrorType() bool

type IP 

type IP interface {
	Payload() []byte
	SourceIP() netip.Addr
	DestinationIP() netip.Addr
	SetSourceIP(ip netip.Addr)
	SetDestinationIP(ip netip.Addr)
	Protocol() IPProtocol
	DecTimeToLive()
	ResetChecksum()
	PseudoSum() uint32
}

type IPProtocol 

type IPProtocol = byte
const (
	ICMP   IPProtocol = 0x01
	TCP    IPProtocol = 0x06
	UDP    IPProtocol = 0x11
	ICMPv6 IPProtocol = 0x3a
)

IPProtocol type

type IPv4Packet 

type IPv4Packet []byte

func (IPv4Packet) Checksum 

func (p IPv4Packet) Checksum() uint16

func (IPv4Packet) DataLen 

func (p IPv4Packet) DataLen() uint16

func (IPv4Packet) DecTimeToLive 

func (p IPv4Packet) DecTimeToLive()

func (IPv4Packet) DestinationIP 

func (p IPv4Packet) DestinationIP() netip.Addr

func (IPv4Packet) Flags 

func (p IPv4Packet) Flags() byte

func (IPv4Packet) FragmentOffset 

func (p IPv4Packet) FragmentOffset() uint16

func (IPv4Packet) HeaderLen 

func (p IPv4Packet) HeaderLen() uint16

func (IPv4Packet) Identification 

func (p IPv4Packet) Identification() uint16

func (IPv4Packet) Payload 

func (p IPv4Packet) Payload() []byte

func (IPv4Packet) Protocol 

func (p IPv4Packet) Protocol() IPProtocol

func (IPv4Packet) PseudoSum 

func (p IPv4Packet) PseudoSum() uint32

PseudoSum for tcp checksum

func (IPv4Packet) ResetChecksum 

func (p IPv4Packet) ResetChecksum()

func (IPv4Packet) SetChecksum 

func (p IPv4Packet) SetChecksum(sum [2]byte)

func (IPv4Packet) SetDestinationIP 

func (p IPv4Packet) SetDestinationIP(ip netip.Addr)

func (IPv4Packet) SetFlags 

func (p IPv4Packet) SetFlags(flags byte)

func (IPv4Packet) SetFragmentOffset 

func (p IPv4Packet) SetFragmentOffset(offset uint32)

func (IPv4Packet) SetHeaderLen 

func (p IPv4Packet) SetHeaderLen(length uint16)

func (IPv4Packet) SetIdentification 

func (p IPv4Packet) SetIdentification(id uint16)

func (IPv4Packet) SetProtocol 

func (p IPv4Packet) SetProtocol(protocol IPProtocol)

func (IPv4Packet) SetSourceIP 

func (p IPv4Packet) SetSourceIP(ip netip.Addr)

func (IPv4Packet) SetTimeToLive 

func (p IPv4Packet) SetTimeToLive(ttl uint8)

func (IPv4Packet) SetTotalLength 

func (p IPv4Packet) SetTotalLength(length uint16)

func (IPv4Packet) SetTypeOfService 

func (p IPv4Packet) SetTypeOfService(tos byte)

func (IPv4Packet) SourceIP 

func (p IPv4Packet) SourceIP() netip.Addr

func (IPv4Packet) TimeToLive 

func (p IPv4Packet) TimeToLive() uint8

func (IPv4Packet) TotalLen 

func (p IPv4Packet) TotalLen() uint16

func (IPv4Packet) TypeOfService 

func (p IPv4Packet) TypeOfService() byte

func (IPv4Packet) Valid 

func (p IPv4Packet) Valid() bool

func (IPv4Packet) Verify 

func (p IPv4Packet) Verify() error

type IPv6Packet 

type IPv6Packet []byte

func (IPv6Packet) Checksum 

func (IPv6Packet) Checksum() uint16

func (IPv6Packet) DecTimeToLive 

func (b IPv6Packet) DecTimeToLive()

func (IPv6Packet) DestinationIP 

func (b IPv6Packet) DestinationIP() netip.Addr

func (IPv6Packet) HopLimit 

func (b IPv6Packet) HopLimit() uint8

func (IPv6Packet) NextHeader 

func (b IPv6Packet) NextHeader() byte

func (IPv6Packet) Payload 

func (b IPv6Packet) Payload() []byte

func (IPv6Packet) PayloadLength 

func (b IPv6Packet) PayloadLength() uint16

func (IPv6Packet) Protocol 

func (b IPv6Packet) Protocol() IPProtocol

func (IPv6Packet) PseudoSum 

func (b IPv6Packet) PseudoSum() uint32

func (IPv6Packet) ResetChecksum 

func (IPv6Packet) ResetChecksum()

func (IPv6Packet) SetChecksum 

func (IPv6Packet) SetChecksum(uint16)

func (IPv6Packet) SetDestinationIP 

func (b IPv6Packet) SetDestinationIP(addr netip.Addr)

func (IPv6Packet) SetHopLimit 

func (b IPv6Packet) SetHopLimit(v uint8)

func (IPv6Packet) SetNextHeader 

func (b IPv6Packet) SetNextHeader(v byte)

func (IPv6Packet) SetPayloadLength 

func (b IPv6Packet) SetPayloadLength(payloadLength uint16)

func (IPv6Packet) SetProtocol 

func (b IPv6Packet) SetProtocol(p IPProtocol)

func (IPv6Packet) SetSourceIP 

func (b IPv6Packet) SetSourceIP(addr netip.Addr)

func (IPv6Packet) SetTOS 

func (b IPv6Packet) SetTOS(t uint8, l uint32)

func (IPv6Packet) SourceIP 

func (b IPv6Packet) SourceIP() netip.Addr

func (IPv6Packet) TOS 

func (b IPv6Packet) TOS() (uint8, uint32)

func (IPv6Packet) Valid 

func (b IPv6Packet) Valid() bool

type TCPPacket 

type TCPPacket []byte

func (TCPPacket) Checksum 

func (p TCPPacket) Checksum() uint16

func (TCPPacket) DestinationPort 

func (p TCPPacket) DestinationPort() uint16

func (TCPPacket) Flags 

func (p TCPPacket) Flags() uint16

func (TCPPacket) OffloadChecksum added in v0.2.0 

func (p TCPPacket) OffloadChecksum()

func (TCPPacket) ResetChecksum 

func (p TCPPacket) ResetChecksum(psum uint32)

func (TCPPacket) SetChecksum 

func (p TCPPacket) SetChecksum(sum [2]byte)

func (TCPPacket) SetDestinationPort 

func (p TCPPacket) SetDestinationPort(port uint16)

func (TCPPacket) SetSourcePort 

func (p TCPPacket) SetSourcePort(port uint16)

func (TCPPacket) SourcePort 

func (p TCPPacket) SourcePort() uint16

func (TCPPacket) Valid 

func (p TCPPacket) Valid() bool

func (TCPPacket) Verify 

func (p TCPPacket) Verify(sourceAddress net.IP, targetAddress net.IP) error

type UDPPacket 

type UDPPacket []byte

func (UDPPacket) Checksum 

func (p UDPPacket) Checksum() uint16

func (UDPPacket) DestinationPort 

func (p UDPPacket) DestinationPort() uint16

func (UDPPacket) Length 

func (p UDPPacket) Length() uint16

func (UDPPacket) OffloadChecksum added in v0.2.0 

func (p UDPPacket) OffloadChecksum()

func (UDPPacket) Payload 

func (p UDPPacket) Payload() []byte

func (UDPPacket) ResetChecksum 

func (p UDPPacket) ResetChecksum(psum uint32)

func (UDPPacket) SetChecksum 

func (p UDPPacket) SetChecksum(sum [2]byte)

func (UDPPacket) SetDestinationPort 

func (p UDPPacket) SetDestinationPort(port uint16)

func (UDPPacket) SetLength 

func (p UDPPacket) SetLength(length uint16)

func (UDPPacket) SetSourcePort 

func (p UDPPacket) SetSourcePort(port uint16)

func (UDPPacket) SourcePort 

func (p UDPPacket) SourcePort() uint16

func (UDPPacket) Valid 

func (p UDPPacket) Valid() bool

Source Files

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