实现基础的DDoS防护

internal/firewalls/nftables/table_test.go

@@ -0,0 +1,140 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+//go:build linux
+// +build linux
+
+package nftables_test
+
+import (
+	"github.com/TeaOSLab/EdgeNode/internal/firewalls/nftables"
+	"testing"
+)
+
+func getIPv4Table(t *testing.T) *nftables.Table {
+	var conn = nftables.NewConn()
+	table, err := conn.GetTable("test_ipv4", nftables.TableFamilyIPv4)
+	if err != nil {
+		if err == nftables.ErrTableNotFound {
+			table, err = conn.AddIPv4Table("test_ipv4")
+			if err != nil {
+				t.Fatal(err)
+			}
+		} else {
+			t.Fatal(err)
+		}
+	}
+	return table
+}
+
+func TestTable_AddChain(t *testing.T) {
+	var table = getIPv4Table(t)
+
+	{
+		chain, err := table.AddChain("test_default_chain", nil)
+		if err != nil {
+			t.Fatal(err)
+		}
+		t.Log("created:", chain.Name())
+	}
+
+	{
+		chain, err := table.AddAcceptChain("test_accept_chain")
+		if err != nil {
+			t.Fatal(err)
+		}
+		t.Log("created:", chain.Name())
+	}
+
+	// Do not test drop chain before adding accept rule, you will drop yourself!!!!!!!
+	/**{
+		chain, err := table.AddDropChain("test_drop_chain")
+		if err != nil {
+			t.Fatal(err)
+		}
+		t.Log("created:", chain.Name())
+	}**/
+}
+
+func TestTable_GetChain(t *testing.T) {
+	var table = getIPv4Table(t)
+	for _, chainName := range []string{"not_found_chain", "test_default_chain"} {
+		chain, err := table.GetChain(chainName)
+		if err != nil {
+			if err == nftables.ErrChainNotFound {
+				t.Log(chainName, ":", "not found")
+			} else {
+				t.Fatal(err)
+			}
+		} else {
+			t.Log(chainName, ":", chain)
+		}
+	}
+}
+
+func TestTable_DeleteChain(t *testing.T) {
+	var table = getIPv4Table(t)
+	err := table.DeleteChain("test_default_chain")
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Log("ok")
+}
+
+func TestTable_AddSet(t *testing.T) {
+	var table = getIPv4Table(t)
+	{
+		set, err := table.AddSet("ipv4_black_set", &nftables.SetOptions{
+			HasTimeout: false,
+			KeyType:    nftables.TypeIPAddr,
+		})
+		if err != nil {
+			t.Fatal(err)
+		}
+		t.Log(set.Name())
+	}
+
+	{
+		set, err := table.AddSet("ipv6_black_set", &nftables.SetOptions{
+			HasTimeout: true,
+			//Timeout:    3600 * time.Second,
+			KeyType: nftables.TypeIP6Addr,
+		})
+		if err != nil {
+			t.Fatal(err)
+		}
+		t.Log(set.Name())
+	}
+}
+
+func TestTable_GetSet(t *testing.T) {
+	var table = getIPv4Table(t)
+	for _, setName := range []string{"not_found_set", "ipv4_black_set"} {
+		set, err := table.GetSet(setName)
+		if err != nil {
+			if err == nftables.ErrSetNotFound {
+				t.Log(setName, ": not found")
+			} else {
+				t.Fatal(err)
+			}
+		} else {
+			t.Log(setName, ":", set)
+		}
+	}
+}
+
+func TestTable_DeleteSet(t *testing.T) {
+	var table = getIPv4Table(t)
+	err := table.DeleteSet("ipv4_black_set")
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Log("ok")
+}
+
+func TestTable_Flush(t *testing.T) {
+	var table = getIPv4Table(t)
+	err := table.Flush()
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Log("ok")
+}