handlers

Documentation

Index

• func CommandPinger(target string) (bool, error)
• func JumpHandler(sshPriv ssh.Signer) internal.ChannelHandler
• func LocalForward(_ *internal.User, newChannel ssh.NewChannel, l logger.Logger)
• func ProcessICMP(nstack *stack.Stack, pkt *stack.PacketBuffer)
• func Proxy(c1, c2 net.Conn) error
• func RawPinger(target string) (bool, error)
• func ServerConsoleSession(ServerConn ssh.Conn) internal.ChannelHandler
• func Session(user *internal.User, newChannel ssh.NewChannel, log logger.Logger)
• func StartRemoteForward(user *internal.User, r *ssh.Request, sshConn ssh.Conn)
• func StopRemoteForward(rf internal.RemoteForwardRequest) error
• func TryResolve(address string) bool
• func Tun(_ *internal.User, newChannel ssh.NewChannel, l logger.Logger)
• type SSHEndpoint
  • func NewSSHEndpoint(dev ssh.Channel) *SSHEndpoint
  • func (*SSHEndpoint) ARPHardwareType() header.ARPHardwareType
  • func (*SSHEndpoint) AddHeader(pkt *stack.PacketBuffer)
  • func (m *SSHEndpoint) Attach(dispatcher stack.NetworkDispatcher)
  • func (m *SSHEndpoint) Capabilities() stack.LinkEndpointCapabilities
  • func (m *SSHEndpoint) IsAttached() bool
  • func (m *SSHEndpoint) LinkAddress() tcpip.LinkAddress
  • func (m *SSHEndpoint) MTU() uint32
  • func (m *SSHEndpoint) MaxHeaderLength() uint16
  • func (m *SSHEndpoint) Wait()
  • func (m *SSHEndpoint) WritePacket(pkt *stack.PacketBuffer) tcpip.Error
  • func (m *SSHEndpoint) WritePackets(pkts stack.PacketBufferList) (int, tcpip.Error)
  • func (*SSHEndpoint) WriteRawPacket(*stack.PacketBuffer) tcpip.Error

Functions

func CommandPinger

func CommandPinger(target string) (bool, error)

CommandPinger uses the internal ping command (dirty), but should not require privileges

func JumpHandler

func JumpHandler(sshPriv ssh.Signer) internal.ChannelHandler

func LocalForward

func LocalForward(_ *internal.User, newChannel ssh.NewChannel, l logger.Logger)

func ProcessICMP

func ProcessICMP(nstack *stack.Stack, pkt *stack.PacketBuffer)

ProcessICMP send back a ICMP echo reply from after receiving a echo request. This code come mostly from pkg/tcpip/network/ipv4/icmp.go

func Proxy

func Proxy(c1, c2 net.Conn) error

func RawPinger

func RawPinger(target string) (bool, error)

RawPinger use ICMP sockets to discover if a host is up. This could require administrative permissions on some hosts

func ServerConsoleSession

func ServerConsoleSession(ServerConn ssh.Conn) internal.ChannelHandler

func Session

func Session(user *internal.User, newChannel ssh.NewChannel, log logger.Logger)

Session has a lot of 'function' in ssh. It can be used for shell, exec, subsystem, pty-req and more. However these calls are done through requests, rather than opening a new channel This callback just sorts out what the client wants to be doing

func StartRemoteForward

func StartRemoteForward(user *internal.User, r *ssh.Request, sshConn ssh.Conn)

func StopRemoteForward

func StopRemoteForward(rf internal.RemoteForwardRequest) error

func TryResolve

func TryResolve(address string) bool

TryResolve tries to discover if the remote host is up using ICMP

func Tun

func Tun(_ *internal.User, newChannel ssh.NewChannel, l logger.Logger)

Types

type SSHEndpoint

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

func NewSSHEndpoint

func NewSSHEndpoint(dev ssh.Channel) *SSHEndpoint

func (*SSHEndpoint) ARPHardwareType

func (*SSHEndpoint) ARPHardwareType() header.ARPHardwareType

ARPHardwareType implements stack.LinkEndpoint.ARPHardwareType.

func (*SSHEndpoint) AddHeader

func (*SSHEndpoint) AddHeader(pkt *stack.PacketBuffer)

AddHeader implements stack.LinkEndpoint.AddHeader.

func (*SSHEndpoint) Attach

func (m *SSHEndpoint) Attach(dispatcher stack.NetworkDispatcher)

Attach implements stack.LinkEndpoint.

func (*SSHEndpoint) Capabilities

func (m *SSHEndpoint) Capabilities() stack.LinkEndpointCapabilities

Capabilities implements stack.LinkEndpoint.

func (*SSHEndpoint) IsAttached

func (m *SSHEndpoint) IsAttached() bool

IsAttached implements stack.LinkEndpoint.

func (*SSHEndpoint) LinkAddress

func (m *SSHEndpoint) LinkAddress() tcpip.LinkAddress

LinkAddress implements stack.LinkEndpoint.

func (*SSHEndpoint) MTU

func (m *SSHEndpoint) MTU() uint32

MTU implements stack.LinkEndpoint.

func (*SSHEndpoint) MaxHeaderLength

func (m *SSHEndpoint) MaxHeaderLength() uint16

MaxHeaderLength implements stack.LinkEndpoint.

func (*SSHEndpoint) Wait

func (m *SSHEndpoint) Wait()

Wait implements stack.LinkEndpoint.Wait.

func (*SSHEndpoint) WritePacket

func (m *SSHEndpoint) WritePacket(pkt *stack.PacketBuffer) tcpip.Error

WritePacket writes outbound packets

func (*SSHEndpoint) WritePackets

func (m *SSHEndpoint) WritePackets(pkts stack.PacketBufferList) (int, tcpip.Error)

WritePackets writes outbound packets

func (*SSHEndpoint) WriteRawPacket

func (*SSHEndpoint) WriteRawPacket(*stack.PacketBuffer) tcpip.Error

WriteRawPacket implements stack.LinkEndpoint.