mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
302 lines
7.7 KiB
Go
302 lines
7.7 KiB
Go
package netutils
|
|
|
|
import (
|
|
"bytes"
|
|
"net"
|
|
"testing"
|
|
|
|
"github.com/docker/libnetwork/ipamutils"
|
|
"github.com/docker/libnetwork/testutils"
|
|
"github.com/docker/libnetwork/types"
|
|
"github.com/vishvananda/netlink"
|
|
)
|
|
|
|
func TestNonOverlapingNameservers(t *testing.T) {
|
|
network := &net.IPNet{
|
|
IP: []byte{192, 168, 0, 1},
|
|
Mask: []byte{255, 255, 255, 0},
|
|
}
|
|
nameservers := []string{
|
|
"127.0.0.1/32",
|
|
}
|
|
|
|
if err := CheckNameserverOverlaps(nameservers, network); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func TestOverlapingNameservers(t *testing.T) {
|
|
network := &net.IPNet{
|
|
IP: []byte{192, 168, 0, 1},
|
|
Mask: []byte{255, 255, 255, 0},
|
|
}
|
|
nameservers := []string{
|
|
"192.168.0.1/32",
|
|
}
|
|
|
|
if err := CheckNameserverOverlaps(nameservers, network); err == nil {
|
|
t.Fatalf("Expected error %s got %s", ErrNetworkOverlapsWithNameservers, err)
|
|
}
|
|
}
|
|
|
|
func TestCheckRouteOverlaps(t *testing.T) {
|
|
networkGetRoutesFct = func(netlink.Link, int) ([]netlink.Route, error) {
|
|
routesData := []string{"10.0.2.0/32", "10.0.3.0/24", "10.0.42.0/24", "172.16.42.0/24", "192.168.142.0/24"}
|
|
routes := []netlink.Route{}
|
|
for _, addr := range routesData {
|
|
_, netX, _ := net.ParseCIDR(addr)
|
|
routes = append(routes, netlink.Route{Dst: netX})
|
|
}
|
|
return routes, nil
|
|
}
|
|
defer func() { networkGetRoutesFct = nil }()
|
|
|
|
_, netX, _ := net.ParseCIDR("172.16.0.1/24")
|
|
if err := CheckRouteOverlaps(netX); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
_, netX, _ = net.ParseCIDR("10.0.2.0/24")
|
|
if err := CheckRouteOverlaps(netX); err == nil {
|
|
t.Fatalf("10.0.2.0/24 and 10.0.2.0 should overlap but it doesn't")
|
|
}
|
|
}
|
|
|
|
func TestCheckNameserverOverlaps(t *testing.T) {
|
|
nameservers := []string{"10.0.2.3/32", "192.168.102.1/32"}
|
|
|
|
_, netX, _ := net.ParseCIDR("10.0.2.3/32")
|
|
|
|
if err := CheckNameserverOverlaps(nameservers, netX); err == nil {
|
|
t.Fatalf("%s should overlap 10.0.2.3/32 but doesn't", netX)
|
|
}
|
|
|
|
_, netX, _ = net.ParseCIDR("192.168.102.2/32")
|
|
|
|
if err := CheckNameserverOverlaps(nameservers, netX); err != nil {
|
|
t.Fatalf("%s should not overlap %v but it does", netX, nameservers)
|
|
}
|
|
}
|
|
|
|
func AssertOverlap(CIDRx string, CIDRy string, t *testing.T) {
|
|
_, netX, _ := net.ParseCIDR(CIDRx)
|
|
_, netY, _ := net.ParseCIDR(CIDRy)
|
|
if !NetworkOverlaps(netX, netY) {
|
|
t.Errorf("%v and %v should overlap", netX, netY)
|
|
}
|
|
}
|
|
|
|
func AssertNoOverlap(CIDRx string, CIDRy string, t *testing.T) {
|
|
_, netX, _ := net.ParseCIDR(CIDRx)
|
|
_, netY, _ := net.ParseCIDR(CIDRy)
|
|
if NetworkOverlaps(netX, netY) {
|
|
t.Errorf("%v and %v should not overlap", netX, netY)
|
|
}
|
|
}
|
|
|
|
func TestNetworkOverlaps(t *testing.T) {
|
|
//netY starts at same IP and ends within netX
|
|
AssertOverlap("172.16.0.1/24", "172.16.0.1/25", t)
|
|
//netY starts within netX and ends at same IP
|
|
AssertOverlap("172.16.0.1/24", "172.16.0.128/25", t)
|
|
//netY starts and ends within netX
|
|
AssertOverlap("172.16.0.1/24", "172.16.0.64/25", t)
|
|
//netY starts at same IP and ends outside of netX
|
|
AssertOverlap("172.16.0.1/24", "172.16.0.1/23", t)
|
|
//netY starts before and ends at same IP of netX
|
|
AssertOverlap("172.16.1.1/24", "172.16.0.1/23", t)
|
|
//netY starts before and ends outside of netX
|
|
AssertOverlap("172.16.1.1/24", "172.16.0.1/22", t)
|
|
//netY starts and ends before netX
|
|
AssertNoOverlap("172.16.1.1/25", "172.16.0.1/24", t)
|
|
//netX starts and ends before netY
|
|
AssertNoOverlap("172.16.1.1/25", "172.16.2.1/24", t)
|
|
}
|
|
|
|
func TestNetworkRange(t *testing.T) {
|
|
// Simple class C test
|
|
_, network, _ := net.ParseCIDR("192.168.0.1/24")
|
|
first, last := NetworkRange(network)
|
|
if !first.Equal(net.ParseIP("192.168.0.0")) {
|
|
t.Error(first.String())
|
|
}
|
|
if !last.Equal(net.ParseIP("192.168.0.255")) {
|
|
t.Error(last.String())
|
|
}
|
|
|
|
// Class A test
|
|
_, network, _ = net.ParseCIDR("10.0.0.1/8")
|
|
first, last = NetworkRange(network)
|
|
if !first.Equal(net.ParseIP("10.0.0.0")) {
|
|
t.Error(first.String())
|
|
}
|
|
if !last.Equal(net.ParseIP("10.255.255.255")) {
|
|
t.Error(last.String())
|
|
}
|
|
|
|
// Class A, random IP address
|
|
_, network, _ = net.ParseCIDR("10.1.2.3/8")
|
|
first, last = NetworkRange(network)
|
|
if !first.Equal(net.ParseIP("10.0.0.0")) {
|
|
t.Error(first.String())
|
|
}
|
|
if !last.Equal(net.ParseIP("10.255.255.255")) {
|
|
t.Error(last.String())
|
|
}
|
|
|
|
// 32bit mask
|
|
_, network, _ = net.ParseCIDR("10.1.2.3/32")
|
|
first, last = NetworkRange(network)
|
|
if !first.Equal(net.ParseIP("10.1.2.3")) {
|
|
t.Error(first.String())
|
|
}
|
|
if !last.Equal(net.ParseIP("10.1.2.3")) {
|
|
t.Error(last.String())
|
|
}
|
|
|
|
// 31bit mask
|
|
_, network, _ = net.ParseCIDR("10.1.2.3/31")
|
|
first, last = NetworkRange(network)
|
|
if !first.Equal(net.ParseIP("10.1.2.2")) {
|
|
t.Error(first.String())
|
|
}
|
|
if !last.Equal(net.ParseIP("10.1.2.3")) {
|
|
t.Error(last.String())
|
|
}
|
|
|
|
// 26bit mask
|
|
_, network, _ = net.ParseCIDR("10.1.2.3/26")
|
|
first, last = NetworkRange(network)
|
|
if !first.Equal(net.ParseIP("10.1.2.0")) {
|
|
t.Error(first.String())
|
|
}
|
|
if !last.Equal(net.ParseIP("10.1.2.63")) {
|
|
t.Error(last.String())
|
|
}
|
|
}
|
|
|
|
// Test veth name generation "veth"+rand (e.g.veth0f60e2c)
|
|
func TestGenerateRandomName(t *testing.T) {
|
|
name1, err := GenerateRandomName("veth", 7)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
// veth plus generated append equals a len of 11
|
|
if len(name1) != 11 {
|
|
t.Fatalf("Expected 11 characters, instead received %d characters", len(name1))
|
|
}
|
|
name2, err := GenerateRandomName("veth", 7)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
// Fail if the random generated names equal one another
|
|
if name1 == name2 {
|
|
t.Fatalf("Expected differing values but received %s and %s", name1, name2)
|
|
}
|
|
}
|
|
|
|
// Test mac generation.
|
|
func TestUtilGenerateRandomMAC(t *testing.T) {
|
|
mac1 := GenerateRandomMAC()
|
|
mac2 := GenerateRandomMAC()
|
|
// ensure bytes are unique
|
|
if bytes.Equal(mac1, mac2) {
|
|
t.Fatalf("mac1 %s should not equal mac2 %s", mac1, mac2)
|
|
}
|
|
// existing tests check string functionality so keeping the pattern
|
|
if mac1.String() == mac2.String() {
|
|
t.Fatalf("mac1 %s should not equal mac2 %s", mac1, mac2)
|
|
}
|
|
}
|
|
|
|
func TestNetworkRequest(t *testing.T) {
|
|
defer testutils.SetupTestOSContext(t)()
|
|
ipamutils.InitNetworks()
|
|
|
|
_, exp, err := net.ParseCIDR("172.17.0.0/16")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
nw, err := FindAvailableNetwork(ipamutils.PredefinedBroadNetworks)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !types.CompareIPNet(exp, nw) {
|
|
t.Fatalf("exected %s. got %s", exp, nw)
|
|
}
|
|
|
|
_, exp, err = net.ParseCIDR("10.0.0.0/24")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
nw, err = FindAvailableNetwork(ipamutils.PredefinedGranularNetworks)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !types.CompareIPNet(exp, nw) {
|
|
t.Fatalf("exected %s. got %s", exp, nw)
|
|
}
|
|
|
|
// Add iface and ssert returned address on request
|
|
createInterface(t, "test", "172.17.42.1/16")
|
|
|
|
_, exp, err = net.ParseCIDR("172.18.0.0/16")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
nw, err = FindAvailableNetwork(ipamutils.PredefinedBroadNetworks)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !types.CompareIPNet(exp, nw) {
|
|
t.Fatalf("exected %s. got %s", exp, nw)
|
|
}
|
|
}
|
|
|
|
func TestElectInterfaceAddress(t *testing.T) {
|
|
defer testutils.SetupTestOSContext(t)()
|
|
ipamutils.InitNetworks()
|
|
|
|
nws := "172.101.202.254/16"
|
|
createInterface(t, "test", nws)
|
|
|
|
ipv4Nw, ipv6Nw, err := ElectInterfaceAddresses("test")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if ipv4Nw == nil {
|
|
t.Fatalf("unexpected empty ipv4 network addresses")
|
|
}
|
|
|
|
if len(ipv6Nw) == 0 {
|
|
t.Fatalf("unexpected empty ipv4 network addresses")
|
|
}
|
|
|
|
if nws != ipv4Nw.String() {
|
|
t.Fatalf("expected %s. got %s", nws, ipv4Nw)
|
|
}
|
|
}
|
|
|
|
func createInterface(t *testing.T, name, nw string) {
|
|
// Add interface
|
|
link := &netlink.Bridge{
|
|
LinkAttrs: netlink.LinkAttrs{
|
|
Name: "test",
|
|
},
|
|
}
|
|
bip, err := types.ParseCIDR(nw)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err = netlink.LinkAdd(link); err != nil {
|
|
t.Fatalf("Failed to create interface via netlink: %v", err)
|
|
}
|
|
if err := netlink.AddrAdd(link, &netlink.Addr{IPNet: bip}); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err = netlink.LinkSetUp(link); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|