Proxy: Add MASQUE inbound (IETF CONNECT-IP server, RFC 9484) (#6844)

Completes https://github.com/XTLS/Xray-core/pull/6807 and https://github.com/XTLS/Xray-core/pull/6810

proxy/masque/account_test.go

@@ -0,0 +1,49 @@
+package masque
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/xtls/xray-core/common/protocol"
+)
+
+func TestValidator(t *testing.T) {
+	v := newValidator()
+	user := &protocol.MemoryUser{Email: "U@example.com", Account: &MemoryAccount{Password: "p"}}
+	require.NoError(t, v.add(user))
+	for _, u := range []*protocol.MemoryUser{
+		{Email: "u@example.com", Account: &MemoryAccount{Password: "other"}},
+		{Account: &MemoryAccount{Password: "p"}},
+		{Email: "a:b", Account: &MemoryAccount{Password: "p"}},
+		{Email: "b@example.com", Account: &MemoryAccount{}},
+	} {
+		require.Error(t, v.add(u), u.Email)
+	}
+
+	require.Equal(t, user, v.get("u@example.com", "p"))
+	require.Equal(t, user, v.get("U@EXAMPLE.COM", "p"))
+	require.Nil(t, v.get("u@example.com", "x"))
+	require.Nil(t, v.get("x@example.com", "p"))
+	require.Nil(t, v.get("", ""))
+	require.Equal(t, user, v.getByEmail("u@example.com"))
+	require.Equal(t, []*protocol.MemoryUser{user}, v.getAll())
+	require.Equal(t, int64(1), v.count())
+
+	require.True(t, v.contains(user))
+	removed, err := v.delByEmail("u@EXAMPLE.com")
+	require.NoError(t, err)
+	require.Equal(t, user, removed)
+	_, err = v.delByEmail("u@example.com")
+	require.Error(t, err)
+	require.False(t, v.contains(user))
+	require.Nil(t, v.get("u@example.com", "p"))
+	require.Zero(t, v.count())
+}
+
+func TestAccount(t *testing.T) {
+	account, err := (&Account{Password: "p"}).AsAccount()
+	require.NoError(t, err)
+	require.True(t, account.Equals(&MemoryAccount{Password: "p"}))
+	require.False(t, account.Equals(&MemoryAccount{Password: "x"}))
+	require.Equal(t, &Account{Password: "p"}, account.ToProto())
+}