process

Documentation

Overview

Package process fetches process and socket information from the operating system. It can find the process owning a network connection.

Index

• Constants
• Variables
• func All() map[int]*Process
• func CleanProcessStorage(activePIDs map[int]struct{})
• func SetDBController(controller *database.Controller)
• type Process
  • func GetNetworkHost(ctx context.Context, remoteIP net.IP) (process *Process, err error)
  • func GetOrFindProcess(ctx context.Context, pid int) (*Process, error)
  • func GetProcessByConnection(ctx context.Context, pktInfo *packet.Info) (process *Process, connInbound bool, err error)
  • func GetProcessFromStorage(pid int) (*Process, bool)
  • func GetSystemProcess(ctx context.Context) *Process
  • func GetUnidentifiedProcess(ctx context.Context) *Process
  • func (p *Process) Delete()
  • func (p *Process) GetExecHash(algorithm string) (string, error)
  • func (p *Process) GetLastSeen() int64
  • func (p *Process) GetProfile(ctx context.Context) (changed bool, err error)
  • func (p *Process) IsSystemResolver() bool
  • func (p *Process) Profile() *profile.LayeredProfile
  • func (p *Process) Save()
  • func (p *Process) SetLastSeen(lastSeen int64)
  • func (p *Process) String() string
  • func (p *Process) UpdateProfileMetadata()

Constants

const (
	// UnidentifiedProcessID is the PID used for anything that could not be
	// attributed to a PID for any reason.
	UnidentifiedProcessID = -1

	// UndefinedProcessID is not used by any (virtual) process and signifies that
	// the PID is unset.
	UndefinedProcessID = -2

	// NetworkHostProcessID is the PID used for requests served to the network.
	NetworkHostProcessID = -255
)

const SystemProcessID = 0

SystemProcessID is the PID of the System/Kernel itself.

Variables

var (
	CfgOptionEnableProcessDetectionKey = "core/enableProcessDetection"
)

Configuration Keys.

Functions

func All

func All() map[int]*Process

All returns a copy of all process objects.

func CleanProcessStorage

func CleanProcessStorage(activePIDs map[int]struct{})

CleanProcessStorage cleans the storage from old processes.

func SetDBController

func SetDBController(controller *database.Controller)

SetDBController sets the database controller and allows the package to push database updates on a save. It must be set by the package that registers the "network" database.

Types

type Process

type Process struct {
	record.Base
	sync.Mutex

	Name      string
	UserID    int
	UserName  string
	UserHome  string
	Pid       int
	ParentPid int
	Path      string
	ExecName  string
	Cwd       string
	CmdLine   string
	FirstArg  string

	// SpecialDetail holds special information, the meaning of which can change
	// based on any of the previous attributes.
	SpecialDetail string

	LocalProfileKey string

	FirstSeen int64
	LastSeen  int64
	Error     string // Cache errors

	ExecHashes map[string]string
	// contains filtered or unexported fields
}

A Process represents a process running on the operating system.

func GetNetworkHost

func GetNetworkHost(ctx context.Context, remoteIP net.IP) (process *Process, err error)

func GetOrFindProcess

func GetOrFindProcess(ctx context.Context, pid int) (*Process, error)

GetOrFindProcess returns the process for the given PID.

func GetProcessByConnection

func GetProcessByConnection(ctx context.Context, pktInfo *packet.Info) (process *Process, connInbound bool, err error)

GetProcessByConnection returns the process that owns the described connection.

func GetProcessFromStorage

func GetProcessFromStorage(pid int) (*Process, bool)

GetProcessFromStorage returns a process from the internal storage.

func GetSystemProcess

func GetSystemProcess(ctx context.Context) *Process

GetSystemProcess returns the special process used for the Kernel.

func GetUnidentifiedProcess

func GetUnidentifiedProcess(ctx context.Context) *Process

GetUnidentifiedProcess returns the special process assigned to unidentified processes.

func (*Process) Delete

func (p *Process) Delete()

Delete deletes a process from the storage and propagates the change.

func (*Process) GetExecHash

func (p *Process) GetExecHash(algorithm string) (string, error)

GetExecHash returns the hash of the executable with the given algorithm.

func (*Process) GetLastSeen

func (p *Process) GetLastSeen() int64

GetLastSeen returns the unix timestamp when the process was last seen.

func (*Process) GetProfile

func (p *Process) GetProfile(ctx context.Context) (changed bool, err error)

GetProfile finds and assigns a profile set to the process.

func (*Process) IsSystemResolver

func (p *Process) IsSystemResolver() bool

IsSystemResolver is a shortcut to check if the process is or belongs to the system resolver and needs special handling.

func (*Process) Profile

func (p *Process) Profile() *profile.LayeredProfile

Profile returns the assigned layered profile.

func (*Process) Save

func (p *Process) Save()

Save saves the process to the internal state and pushes an update.

func (*Process) SetLastSeen

func (p *Process) SetLastSeen(lastSeen int64)

SetLastSeen sets the unix timestamp when the process was last seen.

func (*Process) String

func (p *Process) String() string

Strings returns a string representation of process.

func (*Process) UpdateProfileMetadata

func (p *Process) UpdateProfileMetadata()

UpdateProfileMetadata updates the metadata of the local profile as required.