mirror of
https://github.com/AdguardTeam/AdGuardHome.git
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42c7cd6f8e
Updates #4923. Squashed commit of the following: commit0e40b41aa1Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Wed Jul 10 15:28:16 2024 +0300 dhcpsvc: imp code, docs commit5463fdde47Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Tue Jul 9 20:31:20 2024 +0300 dhcpsvc: imp ifaces
572 lines
14 KiB
Go
572 lines
14 KiB
Go
package dhcpsvc_test
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import (
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"io/fs"
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"net/netip"
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"os"
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"path"
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"path/filepath"
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"strings"
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"testing"
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"time"
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"github.com/AdguardTeam/AdGuardHome/internal/dhcpsvc"
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"github.com/AdguardTeam/golibs/testutil"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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// testdata is a filesystem containing data for tests.
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var testdata = os.DirFS("testdata")
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// newTempDB copies the leases database file located in the testdata FS, under
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// tb.Name()/leases.json, to a temporary directory and returns the path to the
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// copied file.
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func newTempDB(tb testing.TB) (dst string) {
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tb.Helper()
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const filename = "leases.json"
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data, err := fs.ReadFile(testdata, path.Join(tb.Name(), filename))
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require.NoError(tb, err)
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dst = filepath.Join(tb.TempDir(), filename)
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err = os.WriteFile(dst, data, dhcpsvc.DatabasePerm)
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require.NoError(tb, err)
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return dst
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}
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func TestNew(t *testing.T) {
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validIPv4Conf := &dhcpsvc.IPv4Config{
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Enabled: true,
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GatewayIP: netip.MustParseAddr("192.168.0.1"),
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SubnetMask: netip.MustParseAddr("255.255.255.0"),
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RangeStart: netip.MustParseAddr("192.168.0.2"),
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RangeEnd: netip.MustParseAddr("192.168.0.254"),
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LeaseDuration: 1 * time.Hour,
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}
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gwInRangeConf := &dhcpsvc.IPv4Config{
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Enabled: true,
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GatewayIP: netip.MustParseAddr("192.168.0.100"),
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SubnetMask: netip.MustParseAddr("255.255.255.0"),
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RangeStart: netip.MustParseAddr("192.168.0.1"),
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RangeEnd: netip.MustParseAddr("192.168.0.254"),
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LeaseDuration: 1 * time.Hour,
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}
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badStartConf := &dhcpsvc.IPv4Config{
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Enabled: true,
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GatewayIP: netip.MustParseAddr("192.168.0.1"),
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SubnetMask: netip.MustParseAddr("255.255.255.0"),
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RangeStart: netip.MustParseAddr("127.0.0.1"),
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RangeEnd: netip.MustParseAddr("192.168.0.254"),
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LeaseDuration: 1 * time.Hour,
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}
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validIPv6Conf := &dhcpsvc.IPv6Config{
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Enabled: true,
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RangeStart: netip.MustParseAddr("2001:db8::1"),
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LeaseDuration: 1 * time.Hour,
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RAAllowSLAAC: true,
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RASLAACOnly: true,
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}
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leasesPath := filepath.Join(t.TempDir(), "leases.json")
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testCases := []struct {
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conf *dhcpsvc.Config
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name string
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wantErrMsg string
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}{{
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conf: &dhcpsvc.Config{
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Enabled: true,
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Logger: discardLog,
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LocalDomainName: testLocalTLD,
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Interfaces: map[string]*dhcpsvc.InterfaceConfig{
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"eth0": {
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IPv4: validIPv4Conf,
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IPv6: validIPv6Conf,
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},
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},
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DBFilePath: leasesPath,
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},
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name: "valid",
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wantErrMsg: "",
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}, {
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conf: &dhcpsvc.Config{
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Enabled: true,
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Logger: discardLog,
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LocalDomainName: testLocalTLD,
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Interfaces: map[string]*dhcpsvc.InterfaceConfig{
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"eth0": {
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IPv4: &dhcpsvc.IPv4Config{Enabled: false},
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IPv6: &dhcpsvc.IPv6Config{Enabled: false},
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},
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},
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DBFilePath: leasesPath,
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},
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name: "disabled_interfaces",
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wantErrMsg: "",
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}, {
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conf: &dhcpsvc.Config{
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Enabled: true,
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Logger: discardLog,
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LocalDomainName: testLocalTLD,
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Interfaces: map[string]*dhcpsvc.InterfaceConfig{
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"eth0": {
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IPv4: gwInRangeConf,
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IPv6: validIPv6Conf,
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},
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},
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DBFilePath: leasesPath,
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},
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name: "gateway_within_range",
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wantErrMsg: `creating interfaces: interface "eth0": ipv4: ` +
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`gateway ip 192.168.0.100 in the ip range 192.168.0.1-192.168.0.254`,
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}, {
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conf: &dhcpsvc.Config{
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Enabled: true,
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Logger: discardLog,
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LocalDomainName: testLocalTLD,
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Interfaces: map[string]*dhcpsvc.InterfaceConfig{
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"eth0": {
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IPv4: badStartConf,
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IPv6: validIPv6Conf,
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},
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},
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DBFilePath: leasesPath,
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},
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name: "bad_start",
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wantErrMsg: `creating interfaces: interface "eth0": ipv4: ` +
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`range start 127.0.0.1 is not within 192.168.0.1/24`,
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}}
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ctx := testutil.ContextWithTimeout(t, testTimeout)
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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_, err := dhcpsvc.New(ctx, tc.conf)
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testutil.AssertErrorMsg(t, tc.wantErrMsg, err)
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})
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}
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}
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func TestDHCPServer_AddLease(t *testing.T) {
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ctx := testutil.ContextWithTimeout(t, testTimeout)
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leasesPath := filepath.Join(t.TempDir(), "leases.json")
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srv, err := dhcpsvc.New(ctx, &dhcpsvc.Config{
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Enabled: true,
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Logger: discardLog,
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LocalDomainName: testLocalTLD,
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Interfaces: testInterfaceConf,
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DBFilePath: leasesPath,
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})
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require.NoError(t, err)
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const (
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existHost = "host1"
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newHost = "host2"
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ipv6Host = "host3"
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)
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var (
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existIP = netip.MustParseAddr("192.168.0.2")
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newIP = netip.MustParseAddr("192.168.0.3")
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newIPv6 = netip.MustParseAddr("2001:db8::2")
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existMAC = mustParseMAC(t, "01:02:03:04:05:06")
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newMAC = mustParseMAC(t, "06:05:04:03:02:01")
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ipv6MAC = mustParseMAC(t, "02:03:04:05:06:07")
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)
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require.NoError(t, srv.AddLease(ctx, &dhcpsvc.Lease{
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Hostname: existHost,
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IP: existIP,
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HWAddr: existMAC,
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IsStatic: true,
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}))
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testCases := []struct {
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name string
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lease *dhcpsvc.Lease
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wantErrMsg string
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}{{
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name: "outside_range",
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lease: &dhcpsvc.Lease{
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Hostname: newHost,
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IP: netip.MustParseAddr("1.2.3.4"),
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HWAddr: newMAC,
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},
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wantErrMsg: "adding lease: no interface for ip 1.2.3.4",
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}, {
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name: "duplicate_ip",
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lease: &dhcpsvc.Lease{
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Hostname: newHost,
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IP: existIP,
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HWAddr: newMAC,
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},
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wantErrMsg: "adding lease: lease for ip " + existIP.String() +
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" already exists",
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}, {
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name: "duplicate_hostname",
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lease: &dhcpsvc.Lease{
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Hostname: existHost,
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IP: newIP,
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HWAddr: newMAC,
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},
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wantErrMsg: "adding lease: lease for hostname " + existHost +
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" already exists",
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}, {
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name: "duplicate_hostname_case",
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lease: &dhcpsvc.Lease{
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Hostname: strings.ToUpper(existHost),
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IP: newIP,
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HWAddr: newMAC,
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},
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wantErrMsg: "adding lease: lease for hostname " +
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strings.ToUpper(existHost) + " already exists",
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}, {
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name: "duplicate_mac",
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lease: &dhcpsvc.Lease{
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Hostname: newHost,
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IP: newIP,
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HWAddr: existMAC,
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},
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wantErrMsg: "adding lease: lease for mac " + existMAC.String() +
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" already exists",
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}, {
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name: "valid",
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lease: &dhcpsvc.Lease{
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Hostname: newHost,
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IP: newIP,
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HWAddr: newMAC,
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},
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wantErrMsg: "",
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}, {
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name: "valid_v6",
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lease: &dhcpsvc.Lease{
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Hostname: ipv6Host,
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IP: newIPv6,
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HWAddr: ipv6MAC,
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},
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wantErrMsg: "",
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}}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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testutil.AssertErrorMsg(t, tc.wantErrMsg, srv.AddLease(ctx, tc.lease))
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})
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}
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assert.NotEmpty(t, srv.Leases())
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assert.FileExists(t, leasesPath)
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}
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func TestDHCPServer_index(t *testing.T) {
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ctx := testutil.ContextWithTimeout(t, testTimeout)
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leasesPath := newTempDB(t)
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srv, err := dhcpsvc.New(ctx, &dhcpsvc.Config{
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Enabled: true,
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Logger: discardLog,
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LocalDomainName: testLocalTLD,
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Interfaces: testInterfaceConf,
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DBFilePath: leasesPath,
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})
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require.NoError(t, err)
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const (
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host1 = "host1"
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host2 = "host2"
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host3 = "host3"
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host4 = "host4"
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host5 = "host5"
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)
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var (
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ip1 = netip.MustParseAddr("192.168.0.2")
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ip2 = netip.MustParseAddr("192.168.0.3")
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ip3 = netip.MustParseAddr("172.16.0.3")
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ip4 = netip.MustParseAddr("172.16.0.4")
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mac1 = mustParseMAC(t, "01:02:03:04:05:06")
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mac2 = mustParseMAC(t, "06:05:04:03:02:01")
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mac3 = mustParseMAC(t, "02:03:04:05:06:07")
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)
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t.Run("ip_idx", func(t *testing.T) {
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assert.Equal(t, ip1, srv.IPByHost(host1))
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assert.Equal(t, ip2, srv.IPByHost(host2))
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assert.Equal(t, ip3, srv.IPByHost(host3))
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assert.Equal(t, ip4, srv.IPByHost(host4))
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assert.Zero(t, srv.IPByHost(host5))
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})
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t.Run("name_idx", func(t *testing.T) {
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assert.Equal(t, host1, srv.HostByIP(ip1))
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assert.Equal(t, host2, srv.HostByIP(ip2))
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assert.Equal(t, host3, srv.HostByIP(ip3))
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assert.Equal(t, host4, srv.HostByIP(ip4))
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assert.Zero(t, srv.HostByIP(netip.Addr{}))
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})
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t.Run("mac_idx", func(t *testing.T) {
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assert.Equal(t, mac1, srv.MACByIP(ip1))
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assert.Equal(t, mac2, srv.MACByIP(ip2))
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assert.Equal(t, mac3, srv.MACByIP(ip3))
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assert.Equal(t, mac1, srv.MACByIP(ip4))
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assert.Zero(t, srv.MACByIP(netip.Addr{}))
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})
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}
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func TestDHCPServer_UpdateStaticLease(t *testing.T) {
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ctx := testutil.ContextWithTimeout(t, testTimeout)
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leasesPath := newTempDB(t)
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srv, err := dhcpsvc.New(ctx, &dhcpsvc.Config{
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Enabled: true,
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Logger: discardLog,
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LocalDomainName: testLocalTLD,
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Interfaces: testInterfaceConf,
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DBFilePath: leasesPath,
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})
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require.NoError(t, err)
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const (
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host1 = "host1"
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host2 = "host2"
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host3 = "host3"
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host4 = "host4"
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host5 = "host5"
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host6 = "host6"
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)
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var (
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ip1 = netip.MustParseAddr("192.168.0.2")
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ip2 = netip.MustParseAddr("192.168.0.3")
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ip3 = netip.MustParseAddr("192.168.0.4")
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ip4 = netip.MustParseAddr("2001:db8::3")
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mac1 = mustParseMAC(t, "01:02:03:04:05:06")
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mac2 = mustParseMAC(t, "06:05:04:03:02:01")
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mac3 = mustParseMAC(t, "06:05:04:03:02:02")
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)
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testCases := []struct {
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name string
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lease *dhcpsvc.Lease
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wantErrMsg string
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}{{
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name: "outside_range",
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lease: &dhcpsvc.Lease{
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Hostname: host1,
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IP: netip.MustParseAddr("1.2.3.4"),
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HWAddr: mac1,
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},
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wantErrMsg: "updating static lease: no interface for ip 1.2.3.4",
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}, {
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name: "not_found",
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lease: &dhcpsvc.Lease{
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Hostname: host3,
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IP: ip3,
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HWAddr: mac2,
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},
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wantErrMsg: "updating static lease: no lease for mac " + mac2.String(),
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}, {
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name: "duplicate_ip",
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lease: &dhcpsvc.Lease{
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Hostname: host1,
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IP: ip2,
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HWAddr: mac1,
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},
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wantErrMsg: "updating static lease: lease for ip " + ip2.String() +
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" already exists",
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}, {
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name: "duplicate_hostname",
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lease: &dhcpsvc.Lease{
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Hostname: host2,
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IP: ip1,
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HWAddr: mac1,
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},
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wantErrMsg: "updating static lease: lease for hostname " + host2 +
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" already exists",
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}, {
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name: "duplicate_hostname_case",
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lease: &dhcpsvc.Lease{
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Hostname: strings.ToUpper(host2),
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IP: ip1,
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HWAddr: mac1,
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},
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wantErrMsg: "updating static lease: lease for hostname " +
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strings.ToUpper(host2) + " already exists",
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}, {
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name: "valid",
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lease: &dhcpsvc.Lease{
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Hostname: host3,
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IP: ip3,
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HWAddr: mac1,
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},
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wantErrMsg: "",
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}, {
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name: "valid_v6",
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lease: &dhcpsvc.Lease{
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Hostname: host6,
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IP: ip4,
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HWAddr: mac3,
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},
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wantErrMsg: "",
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}}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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testutil.AssertErrorMsg(t, tc.wantErrMsg, srv.UpdateStaticLease(ctx, tc.lease))
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})
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}
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assert.FileExists(t, leasesPath)
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}
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func TestDHCPServer_RemoveLease(t *testing.T) {
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ctx := testutil.ContextWithTimeout(t, testTimeout)
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leasesPath := newTempDB(t)
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srv, err := dhcpsvc.New(ctx, &dhcpsvc.Config{
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Enabled: true,
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Logger: discardLog,
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LocalDomainName: testLocalTLD,
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Interfaces: testInterfaceConf,
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DBFilePath: leasesPath,
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})
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require.NoError(t, err)
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const (
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host1 = "host1"
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host2 = "host2"
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host3 = "host3"
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)
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var (
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existIP = netip.MustParseAddr("192.168.0.2")
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newIP = netip.MustParseAddr("192.168.0.3")
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newIPv6 = netip.MustParseAddr("2001:db8::2")
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existMAC = mustParseMAC(t, "01:02:03:04:05:06")
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newMAC = mustParseMAC(t, "02:03:04:05:06:07")
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ipv6MAC = mustParseMAC(t, "06:05:04:03:02:01")
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)
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testCases := []struct {
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name string
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lease *dhcpsvc.Lease
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wantErrMsg string
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}{{
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name: "not_found_mac",
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lease: &dhcpsvc.Lease{
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Hostname: host1,
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IP: existIP,
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HWAddr: newMAC,
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},
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wantErrMsg: "removing lease: no lease for mac " + newMAC.String(),
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}, {
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name: "not_found_ip",
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lease: &dhcpsvc.Lease{
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Hostname: host1,
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IP: newIP,
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HWAddr: existMAC,
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},
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wantErrMsg: "removing lease: no lease for ip " + newIP.String(),
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}, {
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name: "not_found_host",
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lease: &dhcpsvc.Lease{
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Hostname: host2,
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IP: existIP,
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HWAddr: existMAC,
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},
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wantErrMsg: "removing lease: no lease for hostname " + host2,
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}, {
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name: "valid",
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lease: &dhcpsvc.Lease{
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Hostname: host1,
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IP: existIP,
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HWAddr: existMAC,
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},
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wantErrMsg: "",
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}, {
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name: "valid_v6",
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lease: &dhcpsvc.Lease{
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Hostname: host3,
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IP: newIPv6,
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HWAddr: ipv6MAC,
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},
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wantErrMsg: "",
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}}
|
|
|
|
for _, tc := range testCases {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
testutil.AssertErrorMsg(t, tc.wantErrMsg, srv.RemoveLease(ctx, tc.lease))
|
|
})
|
|
}
|
|
|
|
assert.FileExists(t, leasesPath)
|
|
assert.Empty(t, srv.Leases())
|
|
}
|
|
|
|
func TestDHCPServer_Reset(t *testing.T) {
|
|
leasesPath := newTempDB(t)
|
|
conf := &dhcpsvc.Config{
|
|
Enabled: true,
|
|
Logger: discardLog,
|
|
LocalDomainName: testLocalTLD,
|
|
Interfaces: testInterfaceConf,
|
|
DBFilePath: leasesPath,
|
|
}
|
|
|
|
ctx := testutil.ContextWithTimeout(t, testTimeout)
|
|
srv, err := dhcpsvc.New(ctx, conf)
|
|
require.NoError(t, err)
|
|
|
|
const leasesNum = 4
|
|
|
|
require.Len(t, srv.Leases(), leasesNum)
|
|
|
|
require.NoError(t, srv.Reset(ctx))
|
|
|
|
assert.FileExists(t, leasesPath)
|
|
assert.Empty(t, srv.Leases())
|
|
}
|
|
|
|
func TestServer_Leases(t *testing.T) {
|
|
leasesPath := newTempDB(t)
|
|
conf := &dhcpsvc.Config{
|
|
Enabled: true,
|
|
Logger: discardLog,
|
|
LocalDomainName: testLocalTLD,
|
|
Interfaces: testInterfaceConf,
|
|
DBFilePath: leasesPath,
|
|
}
|
|
|
|
ctx := testutil.ContextWithTimeout(t, testTimeout)
|
|
|
|
srv, err := dhcpsvc.New(ctx, conf)
|
|
require.NoError(t, err)
|
|
|
|
expiry, err := time.Parse(time.RFC3339, "2042-01-02T03:04:05Z")
|
|
require.NoError(t, err)
|
|
|
|
wantLeases := []*dhcpsvc.Lease{{
|
|
Expiry: expiry,
|
|
IP: netip.MustParseAddr("192.168.0.3"),
|
|
Hostname: "example.host",
|
|
HWAddr: mustParseMAC(t, "AA:AA:AA:AA:AA:AA"),
|
|
IsStatic: false,
|
|
}, {
|
|
Expiry: time.Time{},
|
|
IP: netip.MustParseAddr("192.168.0.4"),
|
|
Hostname: "example.static.host",
|
|
HWAddr: mustParseMAC(t, "BB:BB:BB:BB:BB:BB"),
|
|
IsStatic: true,
|
|
}}
|
|
assert.ElementsMatch(t, wantLeases, srv.Leases())
|
|
}
|