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https://github.com/safing/portmaster
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79 lines
2.3 KiB
Go
79 lines
2.3 KiB
Go
// +build windows
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package iphelper
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import (
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"errors"
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"fmt"
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"github.com/tevino/abool"
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"golang.org/x/sys/windows"
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)
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var (
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errInvalid = errors.New("IPHelper not initialzed or broken")
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)
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// IPHelper represents a subset of the Windows iphlpapi.dll.
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type IPHelper struct {
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dll *windows.LazyDLL
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getExtendedTCPTable *windows.LazyProc
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getExtendedUDPTable *windows.LazyProc
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// getOwnerModuleFromTcpEntry *windows.LazyProc
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// getOwnerModuleFromTcp6Entry *windows.LazyProc
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// getOwnerModuleFromUdpEntry *windows.LazyProc
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// getOwnerModuleFromUdp6Entry *windows.LazyProc
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valid *abool.AtomicBool
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}
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// New returns a new IPHelper API (with an instance of iphlpapi.dll loaded).
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func New() (*IPHelper, error) {
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new := &IPHelper{}
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new.valid = abool.NewBool(false)
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var err error
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// load dll
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new.dll = windows.NewLazySystemDLL("iphlpapi.dll")
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new.dll.Load()
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if err != nil {
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return nil, err
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}
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// load functions
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new.getExtendedTCPTable = new.dll.NewProc("GetExtendedTcpTable")
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err = new.getExtendedTCPTable.Find()
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if err != nil {
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return nil, fmt.Errorf("could find proc GetExtendedTcpTable: %s", err)
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}
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new.getExtendedUDPTable = new.dll.NewProc("GetExtendedUdpTable")
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err = new.getExtendedUDPTable.Find()
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if err != nil {
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return nil, fmt.Errorf("could find proc GetExtendedUdpTable: %s", err)
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}
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// new.getOwnerModuleFromTcpEntry = new.dll.NewProc("GetOwnerModuleFromTcpEntry")
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// err = new.getOwnerModuleFromTcpEntry.Find()
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// if err != nil {
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// return nil, fmt.Errorf("could find proc GetOwnerModuleFromTcpEntry: %s", err)
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// }
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// new.getOwnerModuleFromTcp6Entry = new.dll.NewProc("GetOwnerModuleFromTcp6Entry")
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// err = new.getOwnerModuleFromTcp6Entry.Find()
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// if err != nil {
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// return nil, fmt.Errorf("could find proc GetOwnerModuleFromTcp6Entry: %s", err)
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// }
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// new.getOwnerModuleFromUdpEntry = new.dll.NewProc("GetOwnerModuleFromUdpEntry")
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// err = new.getOwnerModuleFromUdpEntry.Find()
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// if err != nil {
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// return nil, fmt.Errorf("could find proc GetOwnerModuleFromUdpEntry: %s", err)
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// }
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// new.getOwnerModuleFromUdp6Entry = new.dll.NewProc("GetOwnerModuleFromUdp6Entry")
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// err = new.getOwnerModuleFromUdp6Entry.Find()
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// if err != nil {
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// return nil, fmt.Errorf("could find proc GetOwnerModuleFromUdp6Entry: %s", err)
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// }
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new.valid.Set()
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return new, nil
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}
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