wip: migrate to mono-repo. SPN has already been moved to spn/

service/network/iphelper/get.go

@@ -0,0 +1,71 @@
+//go:build windows
+
+package iphelper
+
+import (
+	"sync"
+
+	"github.com/safing/portmaster/service/network/socket"
+)
+
+var (
+	ipHelper *IPHelper
+
+	// lock locks access to the whole DLL.
+	// TODO: It's unproven if we can access the iphlpapi.dll concurrently, especially as we might be encountering various versions of the DLL. In the future, we could possibly investigate and improve performance here.
+	lock sync.RWMutex
+)
+
+// GetTCP4Table returns the system table for IPv4 TCP activity.
+func GetTCP4Table() (connections []*socket.ConnectionInfo, listeners []*socket.BindInfo, err error) {
+	lock.Lock()
+	defer lock.Unlock()
+
+	err = checkIPHelper()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return ipHelper.getTable(IPv4, TCP)
+}
+
+// GetTCP6Table returns the system table for IPv6 TCP activity.
+func GetTCP6Table() (connections []*socket.ConnectionInfo, listeners []*socket.BindInfo, err error) {
+	lock.Lock()
+	defer lock.Unlock()
+
+	err = checkIPHelper()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return ipHelper.getTable(IPv6, TCP)
+}
+
+// GetUDP4Table returns the system table for IPv4 UDP activity.
+func GetUDP4Table() (binds []*socket.BindInfo, err error) {
+	lock.Lock()
+	defer lock.Unlock()
+
+	err = checkIPHelper()
+	if err != nil {
+		return nil, err
+	}
+
+	_, binds, err = ipHelper.getTable(IPv4, UDP)
+	return
+}
+
+// GetUDP6Table returns the system table for IPv6 UDP activity.
+func GetUDP6Table() (binds []*socket.BindInfo, err error) {
+	lock.Lock()
+	defer lock.Unlock()
+
+	err = checkIPHelper()
+	if err != nil {
+		return nil, err
+	}
+
+	_, binds, err = ipHelper.getTable(IPv6, UDP)
+	return
+}