windowskext

package
v1.6.9 Latest Latest
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 Go to latest Published: Apr 23, 2024 License: GPL-3.0 Imports: 15 Imported by: 0

Documentation

Rendered for windows/amd64

Overview

Package windowskext provides network interception capabilities on windows via the Portmaster Kernel Extension.

Index

Constants

View Source 
const (
	// VerdictRequestFlagFastTrackPermitted is set on packets that have been
	// already permitted by the kernel extension and the verdict request is only
	// informational.
	VerdictRequestFlagFastTrackPermitted = 1

	// VerdictRequestFlagSocketAuth indicates that the verdict request is for a
	// connection that was intercepted on an ALE layer instead of in the network
	// stack itself. Thus, no packet data is available.
	VerdictRequestFlagSocketAuth = 2

	// VerdictRequestFlagExpectSocketAuth indicates that the next verdict
	// requests is expected to be an informational socket auth request from
	// the ALE layer.
	VerdictRequestFlagExpectSocketAuth = 4
)
View Source 
const (
	METHOD_BUFFERED   = 0
	METHOD_IN_DIRECT  = 1
	METHOD_OUT_DIRECT = 2
	METHOD_NEITHER    = 3

	SIOCTL_TYPE = 40000
)

Variables

View Source 
var (
	ErrKextNotReady = errors.New("the windows kernel extension (driver) is not ready to accept commands")
	ErrNoPacketID   = errors.New("the packet has no ID, possibly because it was fast-tracked by the kernel extension")
)

Package errors

View Source 
var (
	IOCTL_VERSION              = ctlCode(SIOCTL_TYPE, 0x800, METHOD_BUFFERED, windows.FILE_READ_DATA|windows.FILE_WRITE_DATA)
	IOCTL_SHUTDOWN_REQUEST     = ctlCode(SIOCTL_TYPE, 0x801, METHOD_BUFFERED, windows.FILE_READ_DATA|windows.FILE_WRITE_DATA)
	IOCTL_RECV_VERDICT_REQ     = ctlCode(SIOCTL_TYPE, 0x802, METHOD_BUFFERED, windows.FILE_READ_DATA|windows.FILE_WRITE_DATA)
	IOCTL_SET_VERDICT          = ctlCode(SIOCTL_TYPE, 0x803, METHOD_BUFFERED, windows.FILE_READ_DATA|windows.FILE_WRITE_DATA)
	IOCTL_GET_PAYLOAD          = ctlCode(SIOCTL_TYPE, 0x804, METHOD_BUFFERED, windows.FILE_READ_DATA|windows.FILE_WRITE_DATA)
	IOCTL_CLEAR_CACHE          = ctlCode(SIOCTL_TYPE, 0x805, METHOD_BUFFERED, windows.FILE_READ_DATA|windows.FILE_WRITE_DATA)
	IOCTL_UPDATE_VERDICT       = ctlCode(SIOCTL_TYPE, 0x806, METHOD_BUFFERED, windows.FILE_READ_DATA|windows.FILE_WRITE_DATA)
	IOCTL_GET_CONNECTIONS_STAT = ctlCode(SIOCTL_TYPE, 0x807, METHOD_BUFFERED, windows.FILE_READ_DATA|windows.FILE_WRITE_DATA)
)

Functions

func BandwidthStatsWorker 

func BandwidthStatsWorker(ctx context.Context, collectInterval time.Duration, bandwidthUpdates chan *packet.BandwidthUpdate) error

func ClearCache 

func ClearCache() error

func GetPayload 

func GetPayload(packetID uint32, packetSize uint32) ([]byte, error)

GetPayload returns the payload of a packet.

func Handler 

func Handler(ctx context.Context, packets chan packet.Packet)

Handler transforms received packets to the Packet interface.

func Init 

func Init(path string) error

Init initializes the DLL and the Kext (Kernel Driver).

func SetVerdict 

func SetVerdict(pkt *Packet, verdict network.Verdict) error

SetVerdict sets the verdict for a packet and/or connection.

func Start 

func Start() error

Start intercepting.

func StartBandwithConsoleLogger 

func StartBandwithConsoleLogger()

func Stop 

func Stop() error

Stop intercepting.

func UpdateVerdict 

func UpdateVerdict(conn *network.Connection) error

Types

type ConnectionStat 

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

func GetConnectionsStats 

func GetConnectionsStats() ([]ConnectionStat, error)

type KextService 

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

type Key 

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

type Packet 

type Packet struct {
	packet.Base
	// contains filtered or unexported fields
}

Packet represents an IP packet.

func (*Packet) Accept 

func (pkt *Packet) Accept() error

Accept accepts the packet.

func (*Packet) Block 

func (pkt *Packet) Block() error

Block blocks the packet.

func (*Packet) Drop 

func (pkt *Packet) Drop() error

Drop drops the packet.

func (*Packet) ExpectInfo 

func (pkt *Packet) ExpectInfo() bool

ExpectInfo returns whether the next packet is expected to be informational only.

func (*Packet) FastTrackedByIntegration 

func (pkt *Packet) FastTrackedByIntegration() bool

FastTrackedByIntegration returns whether the packet has been fast-track accepted by the OS integration.

func (*Packet) InfoOnly 

func (pkt *Packet) InfoOnly() bool

InfoOnly returns whether the packet is informational only and does not represent an actual packet.

func (*Packet) LoadPacketData 

func (pkt *Packet) LoadPacketData() error

GetPayload returns the full raw packet.

func (*Packet) PermanentAccept 

func (pkt *Packet) PermanentAccept() error

PermanentAccept permanently accepts connection (and the current packet).

func (*Packet) PermanentBlock 

func (pkt *Packet) PermanentBlock() error

PermanentBlock permanently blocks connection (and the current packet).

func (*Packet) PermanentDrop 

func (pkt *Packet) PermanentDrop() error

PermanentDrop permanently drops connection (and the current packet).

func (*Packet) RerouteToNameserver 

func (pkt *Packet) RerouteToNameserver() error

RerouteToNameserver permanently reroutes the connection to the local nameserver (and the current packet).

func (*Packet) RerouteToTunnel 

func (pkt *Packet) RerouteToTunnel() error

RerouteToTunnel permanently reroutes the connection to the local tunnel entrypoint (and the current packet).

type Rxtxdata 

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

type VerdictInfo 

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

Do not change the order of the members! The structure is used to communicate with the kernel extension.

type VerdictRequest 

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

Do not change the order of the members! The structure is used to communicate with the kernel extension. VerdictRequest is the request structure from the Kext.

func RecvVerdictRequest 

func RecvVerdictRequest() (*VerdictRequest, error)

RecvVerdictRequest waits for the next verdict request from the kext. If a timeout is reached, both *VerdictRequest and error will be nil.

type VerdictUpdateInfo 

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

Do not change the order of the members! The structure to communicate with the kernel extension.

type VersionInfo 

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

func GetVersion 

func GetVersion() (*VersionInfo, error)

func (*VersionInfo) String 

func (v *VersionInfo) String() string

Source Files

View all Source files

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