hooks

README

Hooks Package Documentation

The hooks package contains the user-space Go code responsible for loading eBPF hooks and eBPF maps, which are used to instrument the user API. This package is utilized by the CLI commands. Additionally, it launches proxy on a defined port to capture egress calls.

Documentation

Overview

Package hooks provides functionality for managing hooks.

Index

• func IPv4ToUint32(ipStr string) (uint32, error)
• type Hooks
  • func NewHooks(logger *zap.Logger, cfg config.Config) *Hooks
  • func (h *Hooks) CleanProxyEntry(srcPort uint16) error
  • func (h *Hooks) Delete(_ context.Context, srcPort uint16) error
  • func (h *Hooks) Get(_ context.Context, srcPort uint16) (*core.NetworkAddress, error)
  • func (h *Hooks) GetDestinationInfo(srcPort uint16) (*structs.DestInfo, error)
  • func (h *Hooks) Load(ctx context.Context, id uint64, opts core.HookCfg) error
  • func (h *Hooks) PassThroughPortsInKernel(_ context.Context, _ uint64, ports []uint) error
  • func (h *Hooks) Record(ctx context.Context, _ uint64, opts models.IncomingOptions) (<-chan *models.TestCase, error)
  • func (h *Hooks) SendAppPid(pid uint32) error
  • func (h *Hooks) SendCmdType(isDocker bool) error
  • func (h *Hooks) SendDNSPort(port uint32) error
  • func (h *Hooks) SendInode(_ context.Context, _ uint64, inode uint64) error
  • func (h *Hooks) SendKeployPid(pid uint32) error
  • func (h *Hooks) SendKeployPids(key models.ModeKey, pid uint32) error
  • func (h *Hooks) SendKeployPorts(key models.ModeKey, port uint32) error
  • func (h *Hooks) SendNameSpaceID(key uint32, inode uint64) error
  • func (h *Hooks) SendPassThroughPorts(filterPorts []uint) error
  • func (h *Hooks) SendProxyInfo(ip4, port uint32, ip6 [4]uint32) error
  • func (h *Hooks) SetKeployModeInKernel(mode uint32) error

Functions

func IPv4ToUint32

func IPv4ToUint32(ipStr string) (uint32, error)

IPv4ToUint32 converts a string representation of an IPv4 address to a 32-bit integer.

Types

type Hooks

type Hooks struct {
	DockerCmdMap *ebpf.Map
	DNSPort      *ebpf.Map
	// contains filtered or unexported fields
}

func NewHooks

func NewHooks(logger *zap.Logger, cfg config.Config) *Hooks

func (*Hooks) CleanProxyEntry

func (h *Hooks) CleanProxyEntry(srcPort uint16) error

func (*Hooks) Delete

func (h *Hooks) Delete(_ context.Context, srcPort uint16) error

func (*Hooks) Get

func (h *Hooks) Get(_ context.Context, srcPort uint16) (*core.NetworkAddress, error)

Get Used by proxy

func (*Hooks) GetDestinationInfo

func (h *Hooks) GetDestinationInfo(srcPort uint16) (*structs.DestInfo, error)

GetDestinationInfo retrieves destination information associated with a source port.

func (*Hooks) Load

func (h *Hooks) Load(ctx context.Context, id uint64, opts core.HookCfg) error

func (*Hooks) PassThroughPortsInKernel

func (h *Hooks) PassThroughPortsInKernel(_ context.Context, _ uint64, ports []uint) error

func (*Hooks) Record

func (h *Hooks) Record(ctx context.Context, _ uint64, opts models.IncomingOptions) (<-chan *models.TestCase, error)

func (*Hooks) SendAppPid

func (h *Hooks) SendAppPid(pid uint32) error

SendAppPid sends the application's process ID (PID) to the kernel. This function is used when running Keploy tests along with unit tests of the application.

func (*Hooks) SendCmdType

func (h *Hooks) SendCmdType(isDocker bool) error

func (*Hooks) SendDNSPort

func (h *Hooks) SendDNSPort(port uint32) error

func (*Hooks) SendInode

func (h *Hooks) SendInode(_ context.Context, _ uint64, inode uint64) error

SendInode sends the inode of the container to ebpf hooks to filter the network traffic

func (*Hooks) SendKeployPid

func (h *Hooks) SendKeployPid(pid uint32) error

func (*Hooks) SendKeployPids

func (h *Hooks) SendKeployPids(key models.ModeKey, pid uint32) error

SendKeployPids is used to send keploy recordServer(key-0) or testServer(key-1) Pid to the ebpf program

func (*Hooks) SendKeployPorts

func (h *Hooks) SendKeployPorts(key models.ModeKey, port uint32) error

SendKeployPorts is used to send keploy recordServer(key-0) or testServer(key-1) Port to the ebpf program

func (*Hooks) SendNameSpaceID

func (h *Hooks) SendNameSpaceID(key uint32, inode uint64) error

SendNameSpaceID function is helpful when user application in running inside a docker container.

func (*Hooks) SendPassThroughPorts

func (h *Hooks) SendPassThroughPorts(filterPorts []uint) error

SendPassThroughPorts sends the destination ports of the server which should not be intercepted by keploy proxy.

func (*Hooks) SendProxyInfo

func (h *Hooks) SendProxyInfo(ip4, port uint32, ip6 [4]uint32) error

SendProxyInfo sends the IP and Port of the running proxy in the eBPF program.

func (*Hooks) SetKeployModeInKernel

func (h *Hooks) SetKeployModeInKernel(mode uint32) error