mirror of
https://github.com/AdguardTeam/AdGuardHome.git
synced 2024-11-17 10:58:29 -07:00
9ed8699c75
Merge in DNS/adguard-home from upd-go to master
Squashed commit of the following:
commit 8edfb5cc3466c1e4ee2eacae5157bd93c135a284
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Wed Aug 3 14:25:45 2022 +0300
all: imp docs; fmt
commit 080b8a85c02afbdaa079c0da47cb7b6311d50fbe
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Tue Aug 2 20:51:20 2022 +0300
all: upd go, imp generic code
609 lines
15 KiB
Go
609 lines
15 KiB
Go
//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
|
|
// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
|
|
|
|
package dhcpd
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/AdguardTeam/golibs/stringutil"
|
|
"github.com/AdguardTeam/golibs/testutil"
|
|
"github.com/insomniacslk/dhcp/dhcpv4"
|
|
"github.com/mdlayher/packet"
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
var (
|
|
DefaultRangeStart = net.IP{192, 168, 10, 100}
|
|
DefaultRangeEnd = net.IP{192, 168, 10, 200}
|
|
DefaultGatewayIP = net.IP{192, 168, 10, 1}
|
|
DefaultSubnetMask = net.IP{255, 255, 255, 0}
|
|
)
|
|
|
|
func notify4(flags uint32) {
|
|
}
|
|
|
|
// defaultV4ServerConf returns the default configuration for *v4Server to use in
|
|
// tests.
|
|
func defaultV4ServerConf() (conf V4ServerConf) {
|
|
return V4ServerConf{
|
|
Enabled: true,
|
|
RangeStart: DefaultRangeStart,
|
|
RangeEnd: DefaultRangeEnd,
|
|
GatewayIP: DefaultGatewayIP,
|
|
SubnetMask: DefaultSubnetMask,
|
|
notify: notify4,
|
|
}
|
|
}
|
|
|
|
// defaultSrv prepares the default DHCPServer to use in tests. The underlying
|
|
// type of s is *v4Server.
|
|
func defaultSrv(t *testing.T) (s DHCPServer) {
|
|
t.Helper()
|
|
|
|
var err error
|
|
s, err = v4Create(defaultV4ServerConf())
|
|
require.NoError(t, err)
|
|
|
|
return s
|
|
}
|
|
|
|
func TestV4Server_AddRemove_static(t *testing.T) {
|
|
s := defaultSrv(t)
|
|
|
|
ls := s.GetLeases(LeasesStatic)
|
|
require.Empty(t, ls)
|
|
|
|
testCases := []struct {
|
|
lease *Lease
|
|
name string
|
|
wantErrMsg string
|
|
}{{
|
|
lease: &Lease{
|
|
Hostname: "success.local",
|
|
HWAddr: net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
|
|
IP: net.IP{192, 168, 10, 150},
|
|
},
|
|
name: "success",
|
|
wantErrMsg: "",
|
|
}, {
|
|
lease: &Lease{
|
|
Hostname: "probably-router.local",
|
|
HWAddr: net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
|
|
IP: DefaultGatewayIP,
|
|
},
|
|
name: "with_gateway_ip",
|
|
wantErrMsg: "dhcpv4: adding static lease: " +
|
|
"can't assign the gateway IP 192.168.10.1 to the lease",
|
|
}, {
|
|
lease: &Lease{
|
|
Hostname: "ip6.local",
|
|
HWAddr: net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
|
|
IP: net.ParseIP("ffff::1"),
|
|
},
|
|
name: "ipv6",
|
|
wantErrMsg: `dhcpv4: adding static lease: ` +
|
|
`invalid ip "ffff::1", only ipv4 is supported`,
|
|
}, {
|
|
lease: &Lease{
|
|
Hostname: "bad-mac.local",
|
|
HWAddr: net.HardwareAddr{0xAA, 0xAA},
|
|
IP: net.IP{192, 168, 10, 150},
|
|
},
|
|
name: "bad_mac",
|
|
wantErrMsg: `dhcpv4: adding static lease: bad mac address "aa:aa": ` +
|
|
`bad mac address length 2, allowed: [6 8 20]`,
|
|
}, {
|
|
lease: &Lease{
|
|
Hostname: "bad-lbl-.local",
|
|
HWAddr: net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
|
|
IP: net.IP{192, 168, 10, 150},
|
|
},
|
|
name: "bad_hostname",
|
|
wantErrMsg: `dhcpv4: adding static lease: validating hostname: ` +
|
|
`bad domain name "bad-lbl-.local": ` +
|
|
`bad domain name label "bad-lbl-": bad domain name label rune '-'`,
|
|
}}
|
|
|
|
for _, tc := range testCases {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
err := s.AddStaticLease(tc.lease)
|
|
testutil.AssertErrorMsg(t, tc.wantErrMsg, err)
|
|
if tc.wantErrMsg != "" {
|
|
return
|
|
}
|
|
|
|
err = s.RemoveStaticLease(&Lease{
|
|
IP: tc.lease.IP,
|
|
HWAddr: tc.lease.HWAddr,
|
|
})
|
|
diffErrMsg := fmt.Sprintf("dhcpv4: lease for ip %s is different: %+v", tc.lease.IP, tc.lease)
|
|
testutil.AssertErrorMsg(t, diffErrMsg, err)
|
|
|
|
// Remove static lease.
|
|
err = s.RemoveStaticLease(tc.lease)
|
|
require.NoError(t, err)
|
|
})
|
|
|
|
ls = s.GetLeases(LeasesStatic)
|
|
require.Emptyf(t, ls, "after %s", tc.name)
|
|
}
|
|
}
|
|
|
|
func TestV4_AddReplace(t *testing.T) {
|
|
sIface := defaultSrv(t)
|
|
|
|
s, ok := sIface.(*v4Server)
|
|
require.True(t, ok)
|
|
|
|
dynLeases := []Lease{{
|
|
Hostname: "dynamic-1.local",
|
|
HWAddr: net.HardwareAddr{0x11, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
|
|
IP: net.IP{192, 168, 10, 150},
|
|
}, {
|
|
Hostname: "dynamic-2.local",
|
|
HWAddr: net.HardwareAddr{0x22, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
|
|
IP: net.IP{192, 168, 10, 151},
|
|
}}
|
|
|
|
for i := range dynLeases {
|
|
err := s.addLease(&dynLeases[i])
|
|
require.NoError(t, err)
|
|
}
|
|
|
|
stLeases := []*Lease{{
|
|
Hostname: "static-1.local",
|
|
HWAddr: net.HardwareAddr{0x33, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
|
|
IP: net.IP{192, 168, 10, 150},
|
|
}, {
|
|
Hostname: "static-2.local",
|
|
HWAddr: net.HardwareAddr{0x22, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
|
|
IP: net.IP{192, 168, 10, 152},
|
|
}}
|
|
|
|
for _, l := range stLeases {
|
|
err := s.AddStaticLease(l)
|
|
require.NoError(t, err)
|
|
}
|
|
|
|
ls := s.GetLeases(LeasesStatic)
|
|
require.Len(t, ls, 2)
|
|
|
|
for i, l := range ls {
|
|
assert.True(t, stLeases[i].IP.Equal(l.IP))
|
|
assert.Equal(t, stLeases[i].HWAddr, l.HWAddr)
|
|
assert.True(t, l.IsStatic())
|
|
}
|
|
}
|
|
|
|
func TestV4Server_Process_optionsPriority(t *testing.T) {
|
|
defaultIP := net.IP{192, 168, 1, 1}
|
|
knownIP := net.IP{1, 2, 3, 4}
|
|
|
|
// prepareSrv creates a *v4Server and sets the opt6IPs in the initial
|
|
// configuration of the server as the value for DHCP option 6.
|
|
prepareSrv := func(t *testing.T, opt6IPs []net.IP) (s *v4Server) {
|
|
t.Helper()
|
|
|
|
conf := defaultV4ServerConf()
|
|
if len(opt6IPs) > 0 {
|
|
b := &strings.Builder{}
|
|
stringutil.WriteToBuilder(b, "6 ips ", opt6IPs[0].String())
|
|
for _, ip := range opt6IPs[1:] {
|
|
stringutil.WriteToBuilder(b, ",", ip.String())
|
|
}
|
|
conf.Options = []string{b.String()}
|
|
}
|
|
|
|
ss, err := v4Create(conf)
|
|
require.NoError(t, err)
|
|
|
|
var ok bool
|
|
s, ok = ss.(*v4Server)
|
|
require.True(t, ok)
|
|
|
|
s.conf.dnsIPAddrs = []net.IP{defaultIP}
|
|
|
|
return s
|
|
}
|
|
|
|
// checkResp creates a discovery message with DHCP option 6 requested amd
|
|
// asserts the response to contain wantIPs in this option.
|
|
checkResp := func(t *testing.T, s *v4Server, wantIPs []net.IP) {
|
|
t.Helper()
|
|
|
|
mac := net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA}
|
|
req, err := dhcpv4.NewDiscovery(mac, dhcpv4.WithRequestedOptions(
|
|
dhcpv4.OptionDomainNameServer,
|
|
))
|
|
require.NoError(t, err)
|
|
|
|
var resp *dhcpv4.DHCPv4
|
|
resp, err = dhcpv4.NewReplyFromRequest(req)
|
|
require.NoError(t, err)
|
|
|
|
res := s.process(req, resp)
|
|
require.Equal(t, 1, res)
|
|
|
|
o := resp.GetOneOption(dhcpv4.OptionDomainNameServer)
|
|
require.NotEmpty(t, o)
|
|
|
|
wantData := []byte{}
|
|
for _, ip := range wantIPs {
|
|
wantData = append(wantData, ip...)
|
|
}
|
|
assert.Equal(t, o, wantData)
|
|
}
|
|
|
|
t.Run("default", func(t *testing.T) {
|
|
s := prepareSrv(t, nil)
|
|
|
|
checkResp(t, s, []net.IP{defaultIP})
|
|
})
|
|
|
|
t.Run("explicitly_configured", func(t *testing.T) {
|
|
s := prepareSrv(t, []net.IP{knownIP, knownIP})
|
|
|
|
checkResp(t, s, []net.IP{knownIP, knownIP})
|
|
})
|
|
}
|
|
|
|
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}}
|
|
|
|
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.process(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.process(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",
|
|
}
|
|
|
|
var err error
|
|
sIface, err := v4Create(conf)
|
|
require.NoError(t, err)
|
|
|
|
s, ok := sIface.(*v4Server)
|
|
require.True(t, ok)
|
|
|
|
s.conf.dnsIPAddrs = []net.IP{{192, 168, 10, 1}}
|
|
|
|
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.process(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.process(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: packet.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())
|
|
})
|
|
}
|