frontman

Documentation

Index

• Constants
• Variables
• func GetDriverHandle() (uintptr, error)
• func WideCharPointerToString(pszWide *uint16) string
• type DestInfo
• type IpsetRuleSpec
• type LogPacketInfo
• type PacketInfo
• type PortRange
• type RuleSpec

Constants

const (
	FilterActionContinue = iota // see frontmanIO.h
	FilterActionAllow
	FilterActionBlock
	FilterActionProxy
	FilterActionNfq
	FilterActionForceNfq
)

const (
	BytesMatchStartIpHeader = iota + 1 // see frontmanIO.h
	BytesMatchStartProtocolHeader
	BytesMatchStartPayload
)

const (
	ProcessMatchProcess  = iota + 1 // Match the process id
	ProcessMatchChildren            // Match the child processes
)

Variables

var (

	// Frontman procs needed for app proxy. The pattern to follow is
	// - call FrontmanGetDestInfo to get original ip/port
	// - create new proxy socket
	// - call FrontmanApplyDestHandle to update WFP redirect data
	// - connect on the new proxy socket
	// - free kernel data by calling FrontmanFreeDestHandle
	GetDestInfoProc     = driverDll.NewProc("FrontmanGetDestInfo")
	ApplyDestHandleProc = driverDll.NewProc("FrontmanApplyDestHandle")
	FreeDestHandleProc  = driverDll.NewProc("FrontmanFreeDestHandle")

	NewIpsetProc         = driverDll.NewProc("IpsetProvider_NewIpset")
	GetIpsetProc         = driverDll.NewProc("IpsetProvider_GetIpset")
	DestroyAllIpsetsProc = driverDll.NewProc("IpsetProvider_DestroyAll")
	ListIpsetsProc       = driverDll.NewProc("IpsetProvider_ListIPSets")
	IpsetAddProc         = driverDll.NewProc("Ipset_Add")
	IpsetAddOptionProc   = driverDll.NewProc("Ipset_AddOption")
	IpsetDeleteProc      = driverDll.NewProc("Ipset_Delete")
	IpsetDestroyProc     = driverDll.NewProc("Ipset_Destroy")
	IpsetFlushProc       = driverDll.NewProc("Ipset_Flush")
	IpsetTestProc        = driverDll.NewProc("Ipset_Test")

	PacketFilterStartProc   = driverDll.NewProc("PacketFilterStart")
	PacketFilterCloseProc   = driverDll.NewProc("PacketFilterClose")
	PacketFilterForwardProc = driverDll.NewProc("PacketFilterForwardPacket")

	AppendFilterProc         = driverDll.NewProc("AppendFilter")
	InsertFilterProc         = driverDll.NewProc("InsertFilter")
	DestroyFilterProc        = driverDll.NewProc("DestroyFilter")
	EmptyFilterProc          = driverDll.NewProc("EmptyFilter")
	GetFilterListProc        = driverDll.NewProc("GetFilterList")
	AppendFilterCriteriaProc = driverDll.NewProc("AppendFilterCriteria")
	DeleteFilterCriteriaProc = driverDll.NewProc("DeleteFilterCriteria")
)

Functions

func GetDriverHandle

func GetDriverHandle() (uintptr, error)

func WideCharPointerToString

func WideCharPointerToString(pszWide *uint16) string

WideCharPointerToString converts a pointer to a zero-terminated wide character string to a golang string

Types

type DestInfo

type DestInfo struct {
	IpAddr     *uint16 // WCHAR* IPAddress		Destination address allocated and will be free by FrontmanFreeDestHandle
	Port       uint16  // USHORT Port			Destination port
	Outbound   int32   // INT32 Outbound		Whether or not this is an outbound or inbound connection
	ProcessId  uint64  // UINT64 ProcessId		Process id.  Only available for outbound connections
	DestHandle uintptr // LPVOID DestHandle		Handle to memory that must be freed by called ProxyDestConnected when connection is established.
}

type IpsetRuleSpec

type IpsetRuleSpec struct {
	NotIpset     uint8
	IpsetDstIp   uint8
	IpsetDstPort uint8
	IpsetSrcIp   uint8
	IpsetSrcPort uint8
	Reserved1    uint8
	Reserved2    uint8
	Reserved3    uint8
	IpsetName    uintptr // const wchar_t*
}

type LogPacketInfo

type LogPacketInfo struct {
	Ipv4       uint8
	Protocol   uint8
	Outbound   uint8
	Reserved1  uint8
	LocalPort  uint16
	RemotePort uint16
	LocalAddr  [4]uint32
	RemoteAddr [4]uint32
	PacketSize uint32
	GroupId    uint32
	LogPrefix  [64]uint16
}

type PacketInfo

type PacketInfo struct {
	Ipv4                         uint8
	Protocol                     uint8
	Outbound                     uint8
	Drop                         uint8
	IgnoreFlow                   uint8
	Reserved1                    uint8
	Reserved2                    uint8
	Reserved3                    uint8
	LocalPort                    uint16
	RemotePort                   uint16
	LocalAddr                    [4]uint32
	RemoteAddr                   [4]uint32
	IfIdx                        uint32
	SubIfIdx                     uint32
	PacketSize                   uint32
	Mark                         uint32
	StartTimeReceivedFromNetwork uint64
	StartTimeSentToUserLand      uint64
}

type PortRange

type PortRange struct {
	PortStart uint16
	PortEnd   uint16
}

type RuleSpec

type RuleSpec struct {
	Action            uint8
	Log               uint8
	Protocol          uint8
	ProtocolSpecified uint8
	IcmpType          uint8
	IcmpTypeSpecified uint8
	IcmpCode          uint8
	IcmpCodeSpecified uint8
	AleAuthConnect    uint8 // not used by us
	ProcessFlags      uint8 // See frontmanIO.h bit mask PROCESS_MATCH_PROCESS and/or PROCESS_MATCH_CHILDREN
	Reserved1         uint8
	Reserved2         uint8
	ProxyPort         uint16
	BytesMatchStart   int16 // See frontmanIO.h for BYTESMATCH defines.
	BytesMatchOffset  int32
	BytesMatchSize    int32
	BytesMatch        *byte
	Mark              uint32
	GroupId           uint32
	SrcPortCount      int32
	DstPortCount      int32
	SrcPorts          *PortRange
	DstPorts          *PortRange
	LogPrefix         uintptr // const wchar_t*
	Application       uintptr // const wchar_t*
	ProcessID         uint64
}