all: sync with master
This commit is contained in:
Ainar Garipov
854
internal/dhcpd/v4_unix_test.go
Normal file
854
internal/dhcpd/v4_unix_test.go
Normal file
@@ -0,0 +1,854 @@
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//go:build darwin || freebsd || linux || openbsd
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package dhcpd
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import (
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"fmt"
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"net"
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"strings"
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"testing"
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"time"
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"github.com/AdguardTeam/AdGuardHome/internal/aghnet"
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"github.com/AdguardTeam/golibs/netutil"
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"github.com/AdguardTeam/golibs/stringutil"
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"github.com/AdguardTeam/golibs/testutil"
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"github.com/insomniacslk/dhcp/dhcpv4"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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//lint:ignore SA1019 See the TODO in go.mod.
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"github.com/mdlayher/raw"
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)
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var (
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DefaultRangeStart = net.IP{192, 168, 10, 100}
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DefaultRangeEnd = net.IP{192, 168, 10, 200}
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DefaultGatewayIP = net.IP{192, 168, 10, 1}
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DefaultSelfIP = net.IP{192, 168, 10, 2}
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DefaultSubnetMask = net.IP{255, 255, 255, 0}
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)
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// defaultV4ServerConf returns the default configuration for *v4Server to use in
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// tests.
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func defaultV4ServerConf() (conf *V4ServerConf) {
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return &V4ServerConf{
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Enabled: true,
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RangeStart: DefaultRangeStart,
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RangeEnd: DefaultRangeEnd,
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GatewayIP: DefaultGatewayIP,
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SubnetMask: DefaultSubnetMask,
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notify: testNotify,
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dnsIPAddrs: []net.IP{DefaultSelfIP},
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}
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}
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// defaultSrv prepares the default DHCPServer to use in tests. The underlying
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// type of s is *v4Server.
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func defaultSrv(t *testing.T) (s DHCPServer) {
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t.Helper()
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var err error
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s, err = v4Create(defaultV4ServerConf())
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require.NoError(t, err)
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return s
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}
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func TestV4Server_leasing(t *testing.T) {
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const (
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staticName = "static-client"
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anotherName = "another-client"
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)
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staticIP := net.IP{192, 168, 10, 10}
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anotherIP := DefaultRangeStart
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staticMAC := net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA}
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anotherMAC := net.HardwareAddr{0xBB, 0xBB, 0xBB, 0xBB, 0xBB, 0xBB}
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s := defaultSrv(t)
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t.Run("add_static", func(t *testing.T) {
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err := s.AddStaticLease(&Lease{
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Expiry: time.Unix(leaseExpireStatic, 0),
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Hostname: staticName,
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HWAddr: staticMAC,
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IP: staticIP,
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})
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require.NoError(t, err)
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t.Run("same_name", func(t *testing.T) {
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err = s.AddStaticLease(&Lease{
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Expiry: time.Unix(leaseExpireStatic, 0),
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Hostname: staticName,
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HWAddr: anotherMAC,
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IP: anotherIP,
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})
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assert.ErrorIs(t, err, ErrDupHostname)
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})
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t.Run("same_mac", func(t *testing.T) {
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wantErrMsg := "dhcpv4: adding static lease: removing " +
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"dynamic leases for " + anotherIP.String() +
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" (" + staticMAC.String() + "): static lease already exists"
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err = s.AddStaticLease(&Lease{
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Expiry: time.Unix(leaseExpireStatic, 0),
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Hostname: anotherName,
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HWAddr: staticMAC,
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IP: anotherIP,
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})
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testutil.AssertErrorMsg(t, wantErrMsg, err)
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})
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t.Run("same_ip", func(t *testing.T) {
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wantErrMsg := "dhcpv4: adding static lease: removing " +
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"dynamic leases for " + staticIP.String() +
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" (" + anotherMAC.String() + "): static lease already exists"
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err = s.AddStaticLease(&Lease{
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Expiry: time.Unix(leaseExpireStatic, 0),
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Hostname: anotherName,
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HWAddr: anotherMAC,
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IP: staticIP,
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})
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testutil.AssertErrorMsg(t, wantErrMsg, err)
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})
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})
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t.Run("add_dynamic", func(t *testing.T) {
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s4, ok := s.(*v4Server)
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require.True(t, ok)
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discoverAnOffer := func(
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t *testing.T,
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name string,
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ip net.IP,
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mac net.HardwareAddr,
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) (resp *dhcpv4.DHCPv4) {
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testutil.CleanupAndRequireSuccess(t, func() (err error) {
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return s.ResetLeases(s.GetLeases(LeasesStatic))
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})
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req, err := dhcpv4.NewDiscovery(
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mac,
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dhcpv4.WithOption(dhcpv4.OptHostName(name)),
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dhcpv4.WithOption(dhcpv4.OptRequestedIPAddress(ip)),
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dhcpv4.WithOption(dhcpv4.OptClientIdentifier([]byte{1, 2, 3, 4, 5, 6, 8})),
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dhcpv4.WithGatewayIP(DefaultGatewayIP),
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)
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require.NoError(t, err)
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resp = &dhcpv4.DHCPv4{}
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res := s4.handle(req, resp)
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require.Positive(t, res)
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require.Equal(t, dhcpv4.MessageTypeOffer, resp.MessageType())
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resp.ClientHWAddr = mac
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return resp
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}
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t.Run("same_name", func(t *testing.T) {
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resp := discoverAnOffer(t, staticName, anotherIP, anotherMAC)
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req, err := dhcpv4.NewRequestFromOffer(resp, dhcpv4.WithOption(
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dhcpv4.OptHostName(staticName),
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))
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require.NoError(t, err)
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res := s4.handle(req, resp)
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require.Positive(t, res)
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assert.Equal(t, aghnet.GenerateHostname(resp.YourIPAddr), resp.HostName())
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})
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t.Run("same_mac", func(t *testing.T) {
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resp := discoverAnOffer(t, anotherName, anotherIP, staticMAC)
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req, err := dhcpv4.NewRequestFromOffer(resp, dhcpv4.WithOption(
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dhcpv4.OptHostName(anotherName),
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))
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require.NoError(t, err)
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res := s4.handle(req, resp)
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require.Positive(t, res)
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fqdnOptData := resp.Options.Get(dhcpv4.OptionFQDN)
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require.Len(t, fqdnOptData, 3+len(staticName))
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assert.Equal(t, []uint8(staticName), fqdnOptData[3:])
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assert.Equal(t, staticIP, resp.YourIPAddr)
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})
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t.Run("same_ip", func(t *testing.T) {
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resp := discoverAnOffer(t, anotherName, staticIP, anotherMAC)
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req, err := dhcpv4.NewRequestFromOffer(resp, dhcpv4.WithOption(
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dhcpv4.OptHostName(anotherName),
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))
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require.NoError(t, err)
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res := s4.handle(req, resp)
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require.Positive(t, res)
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assert.NotEqual(t, staticIP, resp.YourIPAddr)
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})
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})
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}
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func TestV4Server_AddRemove_static(t *testing.T) {
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s := defaultSrv(t)
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ls := s.GetLeases(LeasesStatic)
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require.Empty(t, ls)
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testCases := []struct {
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lease *Lease
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name string
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wantErrMsg string
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}{{
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lease: &Lease{
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Hostname: "success.local",
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HWAddr: net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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IP: net.IP{192, 168, 10, 150},
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},
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name: "success",
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wantErrMsg: "",
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}, {
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lease: &Lease{
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Hostname: "probably-router.local",
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HWAddr: net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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IP: DefaultGatewayIP,
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},
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name: "with_gateway_ip",
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wantErrMsg: "dhcpv4: adding static lease: " +
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"can't assign the gateway IP 192.168.10.1 to the lease",
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}, {
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lease: &Lease{
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Hostname: "ip6.local",
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HWAddr: net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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IP: net.ParseIP("ffff::1"),
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},
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name: "ipv6",
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wantErrMsg: `dhcpv4: adding static lease: ` +
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`invalid ip "ffff::1", only ipv4 is supported`,
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}, {
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lease: &Lease{
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Hostname: "bad-mac.local",
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HWAddr: net.HardwareAddr{0xAA, 0xAA},
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IP: net.IP{192, 168, 10, 150},
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},
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name: "bad_mac",
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wantErrMsg: `dhcpv4: adding static lease: bad mac address "aa:aa": ` +
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`bad mac address length 2, allowed: [6 8 20]`,
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}, {
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lease: &Lease{
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Hostname: "bad-lbl-.local",
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HWAddr: net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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IP: net.IP{192, 168, 10, 150},
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},
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name: "bad_hostname",
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wantErrMsg: `dhcpv4: adding static lease: validating hostname: ` +
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`bad domain name "bad-lbl-.local": ` +
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`bad domain name label "bad-lbl-": bad domain name label rune '-'`,
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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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err := s.AddStaticLease(tc.lease)
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testutil.AssertErrorMsg(t, tc.wantErrMsg, err)
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if tc.wantErrMsg != "" {
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return
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}
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err = s.RemoveStaticLease(&Lease{
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IP: tc.lease.IP,
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HWAddr: tc.lease.HWAddr,
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})
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diffErrMsg := fmt.Sprintf("dhcpv4: lease for ip %s is different: %+v", tc.lease.IP, tc.lease)
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testutil.AssertErrorMsg(t, diffErrMsg, err)
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// Remove static lease.
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err = s.RemoveStaticLease(tc.lease)
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require.NoError(t, err)
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})
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ls = s.GetLeases(LeasesStatic)
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require.Emptyf(t, ls, "after %s", tc.name)
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}
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}
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func TestV4_AddReplace(t *testing.T) {
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sIface := defaultSrv(t)
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s, ok := sIface.(*v4Server)
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require.True(t, ok)
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dynLeases := []Lease{{
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Hostname: "dynamic-1.local",
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HWAddr: net.HardwareAddr{0x11, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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IP: net.IP{192, 168, 10, 150},
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}, {
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Hostname: "dynamic-2.local",
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HWAddr: net.HardwareAddr{0x22, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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IP: net.IP{192, 168, 10, 151},
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}}
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for i := range dynLeases {
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err := s.addLease(&dynLeases[i])
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require.NoError(t, err)
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}
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stLeases := []*Lease{{
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Hostname: "static-1.local",
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HWAddr: net.HardwareAddr{0x33, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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IP: net.IP{192, 168, 10, 150},
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}, {
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Hostname: "static-2.local",
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HWAddr: net.HardwareAddr{0x22, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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IP: net.IP{192, 168, 10, 152},
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}}
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for _, l := range stLeases {
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err := s.AddStaticLease(l)
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require.NoError(t, err)
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}
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ls := s.GetLeases(LeasesStatic)
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require.Len(t, ls, 2)
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for i, l := range ls {
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assert.True(t, stLeases[i].IP.Equal(l.IP))
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assert.Equal(t, stLeases[i].HWAddr, l.HWAddr)
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assert.True(t, l.IsStatic())
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}
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}
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func TestV4Server_handle_optionsPriority(t *testing.T) {
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defaultIP := net.IP{192, 168, 1, 1}
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knownIP := net.IP{1, 2, 3, 4}
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// prepareSrv creates a *v4Server and sets the opt6IPs in the initial
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// configuration of the server as the value for DHCP option 6.
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prepareSrv := func(t *testing.T, opt6IPs []net.IP) (s *v4Server) {
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t.Helper()
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conf := defaultV4ServerConf()
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if len(opt6IPs) > 0 {
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b := &strings.Builder{}
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stringutil.WriteToBuilder(b, "6 ips ", opt6IPs[0].String())
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for _, ip := range opt6IPs[1:] {
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stringutil.WriteToBuilder(b, ",", ip.String())
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}
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conf.Options = []string{b.String()}
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} else {
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defer func() { s.implicitOpts.Update(dhcpv4.OptDNS(defaultIP)) }()
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}
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var err error
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s, err = v4Create(conf)
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require.NoError(t, err)
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s.conf.dnsIPAddrs = []net.IP{defaultIP}
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return s
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}
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// checkResp creates a discovery message with DHCP option 6 requested amd
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// asserts the response to contain wantIPs in this option.
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checkResp := func(t *testing.T, s *v4Server, wantIPs []net.IP) {
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t.Helper()
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mac := net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA}
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req, err := dhcpv4.NewDiscovery(mac, dhcpv4.WithRequestedOptions(
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dhcpv4.OptionDomainNameServer,
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))
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require.NoError(t, err)
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var resp *dhcpv4.DHCPv4
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resp, err = dhcpv4.NewReplyFromRequest(req)
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require.NoError(t, err)
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res := s.handle(req, resp)
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require.Equal(t, 1, res)
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o := resp.GetOneOption(dhcpv4.OptionDomainNameServer)
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require.NotEmpty(t, o)
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wantData := []byte{}
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for _, ip := range wantIPs {
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wantData = append(wantData, ip...)
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}
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assert.Equal(t, o, wantData)
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}
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t.Run("default", func(t *testing.T) {
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s := prepareSrv(t, nil)
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checkResp(t, s, []net.IP{defaultIP})
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})
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t.Run("explicitly_configured", func(t *testing.T) {
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s := prepareSrv(t, []net.IP{knownIP, knownIP})
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checkResp(t, s, []net.IP{knownIP, knownIP})
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})
|
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}
|
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|
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func TestV4Server_updateOptions(t *testing.T) {
|
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testIP := net.IP{1, 2, 3, 4}
|
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|
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dontWant := func(c dhcpv4.OptionCode) (opt dhcpv4.Option) {
|
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return dhcpv4.OptGeneric(c, nil)
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}
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|
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testCases := []struct {
|
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name string
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wantOpts dhcpv4.Options
|
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reqMods []dhcpv4.Modifier
|
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confOpts []string
|
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}{{
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name: "requested_default",
|
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wantOpts: dhcpv4.OptionsFromList(
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dhcpv4.OptBroadcastAddress(netutil.IPv4bcast()),
|
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),
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reqMods: []dhcpv4.Modifier{
|
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dhcpv4.WithRequestedOptions(dhcpv4.OptionBroadcastAddress),
|
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},
|
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confOpts: nil,
|
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}, {
|
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name: "requested_non-default",
|
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wantOpts: dhcpv4.OptionsFromList(
|
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dhcpv4.OptBroadcastAddress(testIP),
|
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),
|
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reqMods: []dhcpv4.Modifier{
|
||||
dhcpv4.WithRequestedOptions(dhcpv4.OptionBroadcastAddress),
|
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},
|
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confOpts: []string{
|
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fmt.Sprintf("%d ip %s", dhcpv4.OptionBroadcastAddress, testIP),
|
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},
|
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}, {
|
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name: "non-requested_default",
|
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wantOpts: dhcpv4.OptionsFromList(
|
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dontWant(dhcpv4.OptionBroadcastAddress),
|
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),
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reqMods: nil,
|
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confOpts: nil,
|
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}, {
|
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name: "non-requested_non-default",
|
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wantOpts: dhcpv4.OptionsFromList(
|
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dhcpv4.OptBroadcastAddress(testIP),
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),
|
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reqMods: nil,
|
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confOpts: []string{
|
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fmt.Sprintf("%d ip %s", dhcpv4.OptionBroadcastAddress, testIP),
|
||||
},
|
||||
}, {
|
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name: "requested_deleted",
|
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wantOpts: dhcpv4.OptionsFromList(
|
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dontWant(dhcpv4.OptionBroadcastAddress),
|
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),
|
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reqMods: []dhcpv4.Modifier{
|
||||
dhcpv4.WithRequestedOptions(dhcpv4.OptionBroadcastAddress),
|
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},
|
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confOpts: []string{
|
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fmt.Sprintf("%d del", dhcpv4.OptionBroadcastAddress),
|
||||
},
|
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}, {
|
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name: "requested_non-default_deleted",
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wantOpts: dhcpv4.OptionsFromList(
|
||||
dontWant(dhcpv4.OptionBroadcastAddress),
|
||||
),
|
||||
reqMods: []dhcpv4.Modifier{
|
||||
dhcpv4.WithRequestedOptions(dhcpv4.OptionBroadcastAddress),
|
||||
},
|
||||
confOpts: []string{
|
||||
fmt.Sprintf("%d ip %s", dhcpv4.OptionBroadcastAddress, testIP),
|
||||
fmt.Sprintf("%d del", dhcpv4.OptionBroadcastAddress),
|
||||
},
|
||||
}}
|
||||
|
||||
for _, tc := range testCases {
|
||||
req, err := dhcpv4.New(tc.reqMods...)
|
||||
require.NoError(t, err)
|
||||
|
||||
resp, err := dhcpv4.NewReplyFromRequest(req)
|
||||
require.NoError(t, err)
|
||||
|
||||
conf := defaultV4ServerConf()
|
||||
conf.Options = tc.confOpts
|
||||
|
||||
s, err := v4Create(conf)
|
||||
require.NoError(t, err)
|
||||
|
||||
require.IsType(t, (*v4Server)(nil), s)
|
||||
|
||||
t.Run(tc.name, func(t *testing.T) {
|
||||
s.updateOptions(req, resp)
|
||||
|
||||
for c, v := range tc.wantOpts {
|
||||
if v == nil {
|
||||
assert.NotContains(t, resp.Options, c)
|
||||
|
||||
continue
|
||||
}
|
||||
|
||||
assert.Equal(t, v, resp.Options.Get(dhcpv4.GenericOptionCode(c)))
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func TestV4StaticLease_Get(t *testing.T) {
|
||||
sIface := defaultSrv(t)
|
||||
|
||||
s, ok := sIface.(*v4Server)
|
||||
require.True(t, ok)
|
||||
|
||||
s.conf.dnsIPAddrs = []net.IP{{192, 168, 10, 1}}
|
||||
s.implicitOpts.Update(dhcpv4.OptDNS(s.conf.dnsIPAddrs...))
|
||||
|
||||
l := &Lease{
|
||||
Hostname: "static-1.local",
|
||||
HWAddr: net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
|
||||
IP: net.IP{192, 168, 10, 150},
|
||||
}
|
||||
err := s.AddStaticLease(l)
|
||||
require.NoError(t, err)
|
||||
|
||||
var req, resp *dhcpv4.DHCPv4
|
||||
mac := net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA}
|
||||
|
||||
t.Run("discover", func(t *testing.T) {
|
||||
req, err = dhcpv4.NewDiscovery(mac, dhcpv4.WithRequestedOptions(
|
||||
dhcpv4.OptionDomainNameServer,
|
||||
))
|
||||
require.NoError(t, err)
|
||||
|
||||
resp, err = dhcpv4.NewReplyFromRequest(req)
|
||||
require.NoError(t, err)
|
||||
|
||||
assert.Equal(t, 1, s.handle(req, resp))
|
||||
})
|
||||
|
||||
// Don't continue if we got any errors in the previous subtest.
|
||||
require.NoError(t, err)
|
||||
|
||||
t.Run("offer", func(t *testing.T) {
|
||||
assert.Equal(t, dhcpv4.MessageTypeOffer, resp.MessageType())
|
||||
assert.Equal(t, mac, resp.ClientHWAddr)
|
||||
assert.True(t, l.IP.Equal(resp.YourIPAddr))
|
||||
assert.True(t, s.conf.GatewayIP.Equal(resp.Router()[0]))
|
||||
assert.True(t, s.conf.GatewayIP.Equal(resp.ServerIdentifier()))
|
||||
assert.Equal(t, s.conf.subnet.Mask, resp.SubnetMask())
|
||||
assert.Equal(t, s.conf.leaseTime.Seconds(), resp.IPAddressLeaseTime(-1).Seconds())
|
||||
})
|
||||
|
||||
t.Run("request", func(t *testing.T) {
|
||||
req, err = dhcpv4.NewRequestFromOffer(resp)
|
||||
require.NoError(t, err)
|
||||
|
||||
resp, err = dhcpv4.NewReplyFromRequest(req)
|
||||
require.NoError(t, err)
|
||||
|
||||
assert.Equal(t, 1, s.handle(req, resp))
|
||||
})
|
||||
|
||||
require.NoError(t, err)
|
||||
|
||||
t.Run("ack", func(t *testing.T) {
|
||||
assert.Equal(t, dhcpv4.MessageTypeAck, resp.MessageType())
|
||||
assert.Equal(t, mac, resp.ClientHWAddr)
|
||||
assert.True(t, l.IP.Equal(resp.YourIPAddr))
|
||||
assert.True(t, s.conf.GatewayIP.Equal(resp.Router()[0]))
|
||||
assert.True(t, s.conf.GatewayIP.Equal(resp.ServerIdentifier()))
|
||||
assert.Equal(t, s.conf.subnet.Mask, resp.SubnetMask())
|
||||
assert.Equal(t, s.conf.leaseTime.Seconds(), resp.IPAddressLeaseTime(-1).Seconds())
|
||||
})
|
||||
|
||||
dnsAddrs := resp.DNS()
|
||||
require.Len(t, dnsAddrs, 1)
|
||||
|
||||
assert.True(t, s.conf.GatewayIP.Equal(dnsAddrs[0]))
|
||||
|
||||
t.Run("check_lease", func(t *testing.T) {
|
||||
ls := s.GetLeases(LeasesStatic)
|
||||
require.Len(t, ls, 1)
|
||||
|
||||
assert.True(t, l.IP.Equal(ls[0].IP))
|
||||
assert.Equal(t, mac, ls[0].HWAddr)
|
||||
})
|
||||
}
|
||||
|
||||
func TestV4DynamicLease_Get(t *testing.T) {
|
||||
conf := defaultV4ServerConf()
|
||||
conf.Options = []string{
|
||||
"81 hex 303132",
|
||||
"82 ip 1.2.3.4",
|
||||
}
|
||||
|
||||
s, err := v4Create(conf)
|
||||
require.NoError(t, err)
|
||||
|
||||
s.conf.dnsIPAddrs = []net.IP{{192, 168, 10, 1}}
|
||||
s.implicitOpts.Update(dhcpv4.OptDNS(s.conf.dnsIPAddrs...))
|
||||
|
||||
var req, resp *dhcpv4.DHCPv4
|
||||
mac := net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA}
|
||||
|
||||
t.Run("discover", func(t *testing.T) {
|
||||
req, err = dhcpv4.NewDiscovery(mac, dhcpv4.WithRequestedOptions(
|
||||
dhcpv4.OptionFQDN,
|
||||
dhcpv4.OptionRelayAgentInformation,
|
||||
))
|
||||
require.NoError(t, err)
|
||||
|
||||
resp, err = dhcpv4.NewReplyFromRequest(req)
|
||||
require.NoError(t, err)
|
||||
|
||||
assert.Equal(t, 1, s.handle(req, resp))
|
||||
})
|
||||
|
||||
// Don't continue if we got any errors in the previous subtest.
|
||||
require.NoError(t, err)
|
||||
|
||||
t.Run("offer", func(t *testing.T) {
|
||||
assert.Equal(t, dhcpv4.MessageTypeOffer, resp.MessageType())
|
||||
assert.Equal(t, mac, resp.ClientHWAddr)
|
||||
|
||||
assert.Equal(t, s.conf.RangeStart, resp.YourIPAddr)
|
||||
assert.Equal(t, s.conf.GatewayIP, resp.ServerIdentifier())
|
||||
|
||||
router := resp.Router()
|
||||
require.Len(t, router, 1)
|
||||
|
||||
assert.Equal(t, s.conf.GatewayIP, router[0])
|
||||
|
||||
assert.Equal(t, s.conf.subnet.Mask, resp.SubnetMask())
|
||||
assert.Equal(t, s.conf.leaseTime.Seconds(), resp.IPAddressLeaseTime(-1).Seconds())
|
||||
assert.Equal(t, []byte("012"), resp.Options.Get(dhcpv4.OptionFQDN))
|
||||
|
||||
rai := resp.RelayAgentInfo()
|
||||
require.NotNil(t, rai)
|
||||
assert.Equal(t, net.IP{1, 2, 3, 4}, net.IP(rai.ToBytes()))
|
||||
})
|
||||
|
||||
t.Run("request", func(t *testing.T) {
|
||||
req, err = dhcpv4.NewRequestFromOffer(resp)
|
||||
require.NoError(t, err)
|
||||
|
||||
resp, err = dhcpv4.NewReplyFromRequest(req)
|
||||
require.NoError(t, err)
|
||||
|
||||
assert.Equal(t, 1, s.handle(req, resp))
|
||||
})
|
||||
|
||||
require.NoError(t, err)
|
||||
|
||||
t.Run("ack", func(t *testing.T) {
|
||||
assert.Equal(t, dhcpv4.MessageTypeAck, resp.MessageType())
|
||||
assert.Equal(t, mac, resp.ClientHWAddr)
|
||||
assert.True(t, s.conf.RangeStart.Equal(resp.YourIPAddr))
|
||||
|
||||
router := resp.Router()
|
||||
require.Len(t, router, 1)
|
||||
|
||||
assert.Equal(t, s.conf.GatewayIP, router[0])
|
||||
|
||||
assert.True(t, s.conf.GatewayIP.Equal(resp.ServerIdentifier()))
|
||||
assert.Equal(t, s.conf.subnet.Mask, resp.SubnetMask())
|
||||
assert.Equal(t, s.conf.leaseTime.Seconds(), resp.IPAddressLeaseTime(-1).Seconds())
|
||||
})
|
||||
|
||||
dnsAddrs := resp.DNS()
|
||||
require.Len(t, dnsAddrs, 1)
|
||||
|
||||
assert.True(t, net.IP{192, 168, 10, 1}.Equal(dnsAddrs[0]))
|
||||
|
||||
// check lease
|
||||
t.Run("check_lease", func(t *testing.T) {
|
||||
ls := s.GetLeases(LeasesDynamic)
|
||||
require.Len(t, ls, 1)
|
||||
|
||||
assert.True(t, net.IP{192, 168, 10, 100}.Equal(ls[0].IP))
|
||||
assert.Equal(t, mac, ls[0].HWAddr)
|
||||
})
|
||||
}
|
||||
|
||||
func TestNormalizeHostname(t *testing.T) {
|
||||
testCases := []struct {
|
||||
name string
|
||||
hostname string
|
||||
wantErrMsg string
|
||||
want string
|
||||
}{{
|
||||
name: "success",
|
||||
hostname: "example.com",
|
||||
wantErrMsg: "",
|
||||
want: "example.com",
|
||||
}, {
|
||||
name: "success_empty",
|
||||
hostname: "",
|
||||
wantErrMsg: "",
|
||||
want: "",
|
||||
}, {
|
||||
name: "success_spaces",
|
||||
hostname: "my device 01",
|
||||
wantErrMsg: "",
|
||||
want: "my-device-01",
|
||||
}, {
|
||||
name: "success_underscores",
|
||||
hostname: "my_device_01",
|
||||
wantErrMsg: "",
|
||||
want: "my-device-01",
|
||||
}, {
|
||||
name: "error_part",
|
||||
hostname: "device !!!",
|
||||
wantErrMsg: "",
|
||||
want: "device",
|
||||
}, {
|
||||
name: "error_part_spaces",
|
||||
hostname: "device ! ! !",
|
||||
wantErrMsg: "",
|
||||
want: "device",
|
||||
}, {
|
||||
name: "error",
|
||||
hostname: "!!!",
|
||||
wantErrMsg: `normalizing "!!!": no valid parts`,
|
||||
want: "",
|
||||
}, {
|
||||
name: "error_spaces",
|
||||
hostname: "! ! !",
|
||||
wantErrMsg: `normalizing "! ! !": no valid parts`,
|
||||
want: "",
|
||||
}}
|
||||
|
||||
for _, tc := range testCases {
|
||||
t.Run(tc.name, func(t *testing.T) {
|
||||
got, err := normalizeHostname(tc.hostname)
|
||||
testutil.AssertErrorMsg(t, tc.wantErrMsg, err)
|
||||
assert.Equal(t, tc.want, got)
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
// fakePacketConn is a mock implementation of net.PacketConn to simplify
|
||||
// testing.
|
||||
type fakePacketConn struct {
|
||||
// writeTo is used to substitute net.PacketConn's WriteTo method.
|
||||
writeTo func(p []byte, addr net.Addr) (n int, err error)
|
||||
// net.PacketConn is embedded here simply to make *fakePacketConn a
|
||||
// net.PacketConn without actually implementing all methods.
|
||||
net.PacketConn
|
||||
}
|
||||
|
||||
// WriteTo implements net.PacketConn interface for *fakePacketConn.
|
||||
func (fc *fakePacketConn) WriteTo(p []byte, addr net.Addr) (n int, err error) {
|
||||
return fc.writeTo(p, addr)
|
||||
}
|
||||
|
||||
func TestV4Server_Send(t *testing.T) {
|
||||
s := &v4Server{}
|
||||
|
||||
var (
|
||||
defaultIP = net.IP{99, 99, 99, 99}
|
||||
knownIP = net.IP{4, 2, 4, 2}
|
||||
knownMAC = net.HardwareAddr{6, 5, 4, 3, 2, 1}
|
||||
)
|
||||
|
||||
defaultPeer := &net.UDPAddr{
|
||||
IP: defaultIP,
|
||||
// Use neither client nor server port to check it actually
|
||||
// changed.
|
||||
Port: dhcpv4.ClientPort + dhcpv4.ServerPort,
|
||||
}
|
||||
defaultResp := &dhcpv4.DHCPv4{}
|
||||
|
||||
testCases := []struct {
|
||||
want net.Addr
|
||||
req *dhcpv4.DHCPv4
|
||||
resp *dhcpv4.DHCPv4
|
||||
name string
|
||||
}{{
|
||||
name: "giaddr",
|
||||
req: &dhcpv4.DHCPv4{GatewayIPAddr: knownIP},
|
||||
resp: defaultResp,
|
||||
want: &net.UDPAddr{
|
||||
IP: knownIP,
|
||||
Port: dhcpv4.ServerPort,
|
||||
},
|
||||
}, {
|
||||
name: "nak",
|
||||
req: &dhcpv4.DHCPv4{},
|
||||
resp: &dhcpv4.DHCPv4{
|
||||
Options: dhcpv4.OptionsFromList(
|
||||
dhcpv4.OptMessageType(dhcpv4.MessageTypeNak),
|
||||
),
|
||||
},
|
||||
want: defaultPeer,
|
||||
}, {
|
||||
name: "ciaddr",
|
||||
req: &dhcpv4.DHCPv4{ClientIPAddr: knownIP},
|
||||
resp: &dhcpv4.DHCPv4{},
|
||||
want: &net.UDPAddr{
|
||||
IP: knownIP,
|
||||
Port: dhcpv4.ClientPort,
|
||||
},
|
||||
}, {
|
||||
name: "chaddr",
|
||||
req: &dhcpv4.DHCPv4{ClientHWAddr: knownMAC},
|
||||
resp: &dhcpv4.DHCPv4{YourIPAddr: knownIP},
|
||||
want: &dhcpUnicastAddr{
|
||||
Addr: raw.Addr{HardwareAddr: knownMAC},
|
||||
yiaddr: knownIP,
|
||||
},
|
||||
}, {
|
||||
name: "who_are_you",
|
||||
req: &dhcpv4.DHCPv4{},
|
||||
resp: &dhcpv4.DHCPv4{},
|
||||
want: defaultPeer,
|
||||
}}
|
||||
|
||||
for _, tc := range testCases {
|
||||
t.Run(tc.name, func(t *testing.T) {
|
||||
conn := &fakePacketConn{
|
||||
writeTo: func(_ []byte, addr net.Addr) (_ int, _ error) {
|
||||
assert.Equal(t, tc.want, addr)
|
||||
|
||||
return 0, nil
|
||||
},
|
||||
}
|
||||
|
||||
s.send(cloneUDPAddr(defaultPeer), conn, tc.req, tc.resp)
|
||||
})
|
||||
}
|
||||
|
||||
t.Run("giaddr_nak", func(t *testing.T) {
|
||||
req := &dhcpv4.DHCPv4{
|
||||
GatewayIPAddr: knownIP,
|
||||
}
|
||||
// Ensure the request is for unicast.
|
||||
req.SetUnicast()
|
||||
resp := &dhcpv4.DHCPv4{
|
||||
Options: dhcpv4.OptionsFromList(
|
||||
dhcpv4.OptMessageType(dhcpv4.MessageTypeNak),
|
||||
),
|
||||
}
|
||||
want := &net.UDPAddr{
|
||||
IP: req.GatewayIPAddr,
|
||||
Port: dhcpv4.ServerPort,
|
||||
}
|
||||
|
||||
conn := &fakePacketConn{
|
||||
writeTo: func(_ []byte, addr net.Addr) (n int, err error) {
|
||||
assert.Equal(t, want, addr)
|
||||
|
||||
return 0, nil
|
||||
},
|
||||
}
|
||||
|
||||
s.send(cloneUDPAddr(defaultPeer), conn, req, resp)
|
||||
assert.True(t, resp.IsBroadcast())
|
||||
})
|
||||
}
|
||||
Reference in New Issue
Block a user