/
driver_windows.go
461 lines (411 loc) · 15.1 KB
/
driver_windows.go
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// +build windows
package frontman
import (
"syscall"
)
// ABI represents the 'application binary interface' to the Frontman dll
type ABI interface {
FrontmanOpenShared() (uintptr, error)
GetDestInfo(driverHandle, socket, destInfo uintptr) (uintptr, error)
ApplyDestHandle(socket, destHandle uintptr) (uintptr, error)
FreeDestHandle(destHandle uintptr) (uintptr, error)
NewIpset(driverHandle, name, ipsetType, ipset uintptr) (uintptr, error)
GetIpset(driverHandle, name, ipset uintptr) (uintptr, error)
DestroyAllIpsets(driverHandle, prefix uintptr) (uintptr, error)
ListIpsets(driverHandle, ipsetNames, ipsetNamesSize, bytesReturned uintptr) (uintptr, error)
ListIpsetsDetail(driverHandle, format, ipsetNames, ipsetNamesSize, bytesReturned uintptr) (uintptr, error)
IpsetAdd(driverHandle, ipset, entry, timeout uintptr) (uintptr, error)
IpsetAddOption(driverHandle, ipset, entry, option, timeout uintptr) (uintptr, error)
IpsetDelete(driverHandle, ipset, entry uintptr) (uintptr, error)
IpsetDestroy(driverHandle, ipset uintptr) (uintptr, error)
IpsetFlush(driverHandle, ipset uintptr) (uintptr, error)
IpsetTest(driverHandle, ipset, entry uintptr) (uintptr, error)
PacketFilterStart(frontman, firewallName, receiveCallback, loggingCallback uintptr) (uintptr, error)
PacketFilterClose() (uintptr, error)
PacketFilterForward(info, packet uintptr) (uintptr, error)
AppendFilter(driverHandle, outbound, filterName, isGotoFilter uintptr) (uintptr, error)
InsertFilter(driverHandle, outbound, priority, filterName, isGotoFilter uintptr) (uintptr, error)
DestroyFilter(driverHandle, filterName uintptr) (uintptr, error)
EmptyFilter(driverHandle, filterName uintptr) (uintptr, error)
GetFilterList(driverHandle, outbound, buffer, bufferSize, bytesReturned uintptr) (uintptr, error)
AppendFilterCriteria(driverHandle, filterName, criteriaName, ruleSpec, ipsetRuleSpecs, ipsetRuleSpecCount uintptr) (uintptr, error)
DeleteFilterCriteria(driverHandle, filterName, criteriaName uintptr) (uintptr, error)
GetCriteriaList(driverHandle, format, criteriaList, criteriaListSize, bytesReturned uintptr) (uintptr, error)
}
type driver struct {
}
// Driver is actually the concrete calls into the Frontman dll, which call into the driver
var Driver = ABI(&driver{})
func (d *driver) FrontmanOpenShared() (uintptr, error) {
ret, _, err := frontManOpenProc.Call()
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) GetDestInfo(driverHandle, socket, destInfo uintptr) (uintptr, error) {
ret, _, err := getDestInfoProc.Call(driverHandle, socket, destInfo)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) ApplyDestHandle(socket, destHandle uintptr) (uintptr, error) {
ret, _, err := applyDestHandleProc.Call(socket, destHandle)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) FreeDestHandle(destHandle uintptr) (uintptr, error) {
ret, _, err := freeDestHandleProc.Call(destHandle)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) NewIpset(driverHandle, name, ipsetType, ipset uintptr) (uintptr, error) {
ret, _, err := newIpsetProc.Call(driverHandle, name, ipsetType, ipset)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) GetIpset(driverHandle, name, ipset uintptr) (uintptr, error) {
ret, _, err := getIpsetProc.Call(driverHandle, name, ipset)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) DestroyAllIpsets(driverHandle, prefix uintptr) (uintptr, error) {
ret, _, err := destroyAllIpsetsProc.Call(driverHandle, prefix)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) ListIpsets(driverHandle, ipsetNames, ipsetNamesSize, bytesReturned uintptr) (uintptr, error) {
ret, _, err := listIpsetsProc.Call(driverHandle, ipsetNames, ipsetNamesSize, bytesReturned)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) ListIpsetsDetail(driverHandle, format, ipsetNames, ipsetNamesSize, bytesReturned uintptr) (uintptr, error) {
ret, _, err := listIpsetsDetailProc.Call(driverHandle, format, ipsetNames, ipsetNamesSize, bytesReturned)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) IpsetAdd(driverHandle, ipset, entry, timeout uintptr) (uintptr, error) {
ret, _, err := ipsetAddProc.Call(driverHandle, ipset, entry, timeout)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) IpsetAddOption(driverHandle, ipset, entry, option, timeout uintptr) (uintptr, error) {
ret, _, err := ipsetAddOptionProc.Call(driverHandle, ipset, entry, option, timeout)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) IpsetDelete(driverHandle, ipset, entry uintptr) (uintptr, error) {
ret, _, err := ipsetDeleteProc.Call(driverHandle, ipset, entry)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) IpsetDestroy(driverHandle, ipset uintptr) (uintptr, error) {
ret, _, err := ipsetDestroyProc.Call(driverHandle, ipset)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) IpsetFlush(driverHandle, ipset uintptr) (uintptr, error) {
ret, _, err := ipsetFlushProc.Call(driverHandle, ipset)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) IpsetTest(driverHandle, ipset, entry uintptr) (uintptr, error) {
ret, _, err := ipsetTestProc.Call(driverHandle, ipset, entry)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) PacketFilterStart(frontman, firewallName, receiveCallback, loggingCallback uintptr) (uintptr, error) {
ret, _, err := packetFilterStartProc.Call(frontman, firewallName, receiveCallback, loggingCallback)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) PacketFilterClose() (uintptr, error) {
ret, _, err := packetFilterCloseProc.Call()
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) PacketFilterForward(info, packet uintptr) (uintptr, error) {
ret, _, err := packetFilterForwardProc.Call(info, packet)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) AppendFilter(driverHandle, outbound, filterName, isGotoFilter uintptr) (uintptr, error) {
ret, _, err := appendFilterProc.Call(driverHandle, outbound, filterName, isGotoFilter)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) InsertFilter(driverHandle, outbound, priority, filterName, isGotoFilter uintptr) (uintptr, error) {
ret, _, err := insertFilterProc.Call(driverHandle, outbound, priority, filterName, isGotoFilter)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) DestroyFilter(driverHandle, filterName uintptr) (uintptr, error) {
ret, _, err := destroyFilterProc.Call(driverHandle, filterName)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) EmptyFilter(driverHandle, filterName uintptr) (uintptr, error) {
ret, _, err := emptyFilterProc.Call(driverHandle, filterName)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) GetFilterList(driverHandle, outbound, buffer, bufferSize, bytesReturned uintptr) (uintptr, error) {
ret, _, err := getFilterListProc.Call(driverHandle, outbound, buffer, bufferSize, bytesReturned)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) AppendFilterCriteria(driverHandle, filterName, criteriaName, ruleSpec, ipsetRuleSpecs, ipsetRuleSpecCount uintptr) (uintptr, error) {
ret, _, err := appendFilterCriteriaProc.Call(driverHandle, filterName, criteriaName, ruleSpec, ipsetRuleSpecs, ipsetRuleSpecCount)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) DeleteFilterCriteria(driverHandle, filterName, criteriaName uintptr) (uintptr, error) {
ret, _, err := deleteFilterCriteriaProc.Call(driverHandle, filterName, criteriaName)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
func (d *driver) GetCriteriaList(driverHandle, format, criteriaList, criteriaListSize, bytesReturned uintptr) (uintptr, error) {
ret, _, err := getCriteriaListProc.Call(driverHandle, format, criteriaList, criteriaListSize, bytesReturned)
if err == syscall.Errno(0) {
err = nil
}
return ret, err
}
// Frontman.dll procs to be called from Go
var (
driverDll = syscall.NewLazyDLL("Frontman.dll")
frontManOpenProc = driverDll.NewProc("FrontmanOpenShared")
// 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")
listIpsetsDetailProc = driverDll.NewProc("IpsetProvider_ListIPSetsDetail")
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")
getCriteriaListProc = driverDll.NewProc("GetCriteriaList")
)
// See frontmanIO.h for #defines
const (
FilterActionContinue = iota
FilterActionAllow
FilterActionBlock
FilterActionProxy
FilterActionNfq
FilterActionForceNfq
FilterActionAllowOnce
FilterActionGotoFilter
FilterActionSetMark
)
// See frontmanIO.h for #defines
const (
BytesMatchStartIPHeader = iota + 1
BytesMatchStartProtocolHeader
BytesMatchStartPayload
)
// ProcessMatch constants
const (
ProcessMatchProcess = iota + 1 // Match the process id
ProcessMatchChildren // Match the child processes
)
// See Filter_set.h
const (
CriteriaListFormatString = iota + 1
CriteriaListFormatJSON
)
// See Ipset.h
const (
IpsetsDetailFormatString = iota + 1
IpsetsDetailFormatJSON
)
// See frontmanIO.h
const (
MatchTypeMatch = uint8(1)
MatchTypeNoMatch = uint8(2)
)
// See frontmanIO.h
const (
IPVersionAny = uint8(0) // Rule is for Ipv4 or Ipv6
IPVersion4 = uint8(1) // Rule is just for Ipv4
IPVersion6 = uint8(2) // Rule is just for Ipv6
)
// DestInfo mirrors frontman's DEST_INFO struct
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.
}
// PacketInfo mirrors frontman's FRONTMAN_PACKET_INFO struct
type PacketInfo struct {
Ipv4 uint8
Protocol uint8
Outbound uint8
Drop uint8
IgnoreFlow uint8
HandleLoopback uint8 // Not to be set by go code, but is for outbound loopback packets
NewPacket uint8 // Set to 1 if packet did not originate from the driver.
NoPidMatchOnFlow uint8 // Set to 1 to ignore process ID rule matches.
DropFlow uint8
SetMark uint8
Reserved [2]uint8
SetMarkValue uint32
LocalPort uint16
RemotePort uint16
LocalAddr [4]uint32
RemoteAddr [4]uint32
IfIdx uint32
SubIfIdx uint32
CompartmentID uint32
PacketSize uint32
Mark uint32
StartTimeReceivedFromNetwork uint64
StartTimeSentToUserLand uint64
}
// LogPacketInfo mirrors frontman's FRONTMAN_LOG_PACKET_INFO struct
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
}
// IpsetRuleSpec mirrors frontman's IPSET_RULE_SPEC struct
type IpsetRuleSpec struct {
NotIpset uint8
IpsetDstIP uint8
IpsetDstPort uint8
IpsetSrcIP uint8
IpsetSrcPort uint8
Reserved1 uint8
Reserved2 uint8
Reserved3 uint8
IpsetName uintptr // const wchar_t*
}
// PortRange mirrors frontman's PORT_RANGE struct
type PortRange struct {
PortStart uint16
PortEnd uint16
}
// IcmpRange mirrors frontman's ICMP_RANGE struct
type IcmpRange struct {
IcmpTypeSpecified uint8
IcmpType uint8
IcmpCodeSpecified uint8
IcmpCodeLower uint8
IcmpCodeUpper uint8
}
// RuleSpec mirrors frontman's RULE_SPEC struct
type RuleSpec struct {
Action uint8
Log uint8
Protocol uint8
ProtocolSpecified uint8
AleAuthConnect uint8 // not used by us
ProcessFlags uint8 // See frontmanIO.h bit mask PROCESS_MATCH_PROCESS and/or PROCESS_MATCH_CHILDREN
TCPFlags uint8
TCPFlagsMask uint8
TCPFlagsSpecified uint8
TCPOption uint8
TCPOptionSpecified uint8
CompartmentIDSpecified uint8
BytesNoMatch uint8
FlowMarkMatchType uint8 // MATCH_TYPE_MATCH = 1 MATCH_TYPE_NOMATCH = 2
IPVersionMatch uint8 // IP_VERSION_ANY, IP_VERSION_4, or IP_VERSION_6
Reserved uint8
FlowMark uint32
CompartmentID uint32
IcmpRanges *IcmpRange
IcmpRangeCount int32
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
GotoFilterName uintptr // const wchar_t*
}