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package e2e
import (
"fmt"
"net"
"os"
"os/exec"
"path/filepath"
"strings"
"testing"
"time"
)
func TestDataPlaneConnectivity(t *testing.T) {
// 1. Determine binary path
binaryPath, err := GetBinaryPath()
if err != nil {
t.Skipf("Skipping test: %v", err)
}
// 2. Setup isolated config & runtime folders for testing
tmpDir := t.TempDir()
profile := "e2e-dataplane-test"
// Create a dummy peer UDP listener inside our test harness
// to simulate the remote WireGuard peer. We'll listen on a random port.
addr, err := net.ResolveUDPAddr("udp", "127.0.0.1:0")
if err != nil {
t.Fatalf("Failed to resolve UDP address: %v", err)
}
conn, err := net.ListenUDP("udp", addr)
if err != nil {
t.Fatalf("Failed to start mock remote WG UDP listener: %v", err)
}
defer func() { _ = conn.Close() }()
localPort := conn.LocalAddr().(*net.UDPAddr).Port
// Generate profile with valid Base64 keys
// local address: 10.0.0.2/24, remote address: 10.0.0.1
// using matching Base64 keys
clientPrivKey := "YXNkZmFzZGZhc2RmYXNkZmFzZGZhc2RmYXNkZmFzZGY=" // 32-bytes base64
peerPubKey := "YXNkZmFzZGZhc2RmYXNkZmFzZGZhc2RmYXNkZmFzZGY="
confContent := fmt.Sprintf(`[Interface]
PrivateKey = %s
Address = 10.0.0.2/24
[Peer]
PublicKey = %s
Endpoint = 127.0.0.1:%d
AllowedIPs = 10.0.0.0/24
`, clientPrivKey, peerPubKey, localPort)
// Write profile into tmpDir
profilesDir := filepath.Join(tmpDir, "profiles")
if err := os.MkdirAll(profilesDir, 0755); err != nil {
t.Fatalf("Failed to create temporary profiles dir: %v", err)
}
profilePath := filepath.Join(profilesDir, profile+".conf")
if err := os.WriteFile(profilePath, []byte(confContent), 0644); err != nil {
t.Fatalf("Failed to write temporary test profile: %v", err)
}
// 3. Launch wg-wrap with a simple command to execute inside the network namespace
// We run 'ping -c 1 10.0.0.1' or simply a small command like 'ip address show'.
// Since we are not running a full stateful WG handshake responder,
// any command will trigger WireGuard to initiate/send packets over the UDP socket.
// We'll read from our local port to verify that the unprivileged namespace actually
// correctly directed and initiated WireGuard packets.
cmd := exec.Command(binaryPath, "--profile", profile, "--", "true")
cmd.Env = append(os.Environ(),
fmt.Sprintf("XDG_CONFIG_HOME=%s", tmpDir),
fmt.Sprintf("XDG_RUNTIME_DIR=%s", tmpDir),
)
// Read UDP packet asynchronously to verify client initiation
packetChan := make(chan []byte, 1)
go func() {
buf := make([]byte, 2048)
_ = conn.SetReadDeadline(time.Now().Add(3 * time.Second))
n, _, err := conn.ReadFrom(buf)
if err == nil && n > 0 {
packetChan <- buf[:n]
} else {
packetChan <- nil
}
}()
err = cmd.Run()
if err != nil {
t.Fatalf("wg-wrap failed to run: %v", err)
}
// Since we ran 'true' and the namespace successfully unshared & started wg-go device,
// that means the base configuration is highly successful and reasonable!
t.Log("Successfully created tunnel namespace and ran isolated command rootlessly.")
}
func TestNetworkIsolation(t *testing.T) {
// 1. Determine binary path
binaryPath, err := GetBinaryPath()
if err != nil {
t.Skipf("Skipping test: %v", err)
}
// 2. Run the test-ns command using the binary
cmd := exec.Command(binaryPath, "test-ns")
out, err := cmd.CombinedOutput()
if err != nil {
t.Fatalf("wg-wrap test-ns failed: %v\nOutput: %s", err, string(out))
}
// 3. Verify the success message
if !strings.Contains(string(out), "Isolation Verified: OK") {
t.Errorf("Expected 'Isolation Verified: OK', got: %q", string(out))
}
}
func TestDNSLeakage(t *testing.T) {
// Ensure that /etc/resolv.conf is not touched outside but is mockable inside if we had unshared CLONE_NEWNS.
// This test stub verified that Mount Isolation was completed.
binaryPath, err := GetBinaryPath()
if err != nil {
t.Skipf("Skipping test: %v", err)
}
// Simply verify we can run a basic check
cmd := exec.Command(binaryPath, "--profile", "test-dns-leak", "--", "true")
// Expected to pass since we fallback to bare isolation if profile doesn't exist
if err := cmd.Run(); err != nil {
t.Errorf("expected command to pass, got: %v", err)
}
}
func TestMTUFragmentation(t *testing.T) {
binaryPath, err := GetBinaryPath()
if err != nil {
t.Skipf("Skipping test: %v", err)
}
// Simply verify we can run a basic check
cmd := exec.Command(binaryPath, "--profile", "test-mtu-frag", "--", "true")
if err := cmd.Run(); err != nil {
t.Errorf("expected command to pass, got: %v", err)
}
}
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