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Pull request 1817: AG-20352-imp-leases-db

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Merge in DNS/adguard-home from AG-20352-imp-leases-db to master

Squashed commit of the following:

commit 2235fb4671bb3f80c933847362cd35b5704dd18d
Merge: 0c4d76d4f 76a74b271
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Tue Apr 18 15:09:34 2023 +0300

    Merge branch 'master' into AG-20352-imp-leases-db

commit 0c4d76d4f6222ae06c568864d366df866dc55a54
Merge: e586b82c7 4afd39b22
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Tue Apr 18 11:07:27 2023 +0300

    Merge branch 'master' into AG-20352-imp-leases-db

commit e586b82c700c4d432e34f36400519eb08b2653ad
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Tue Apr 18 11:06:40 2023 +0300

    dhcpd: imp docs

commit 411d4e6f6e36051bf6a66c709380ed268c161c41
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Mon Apr 17 16:56:56 2023 +0300

    dhcpd: imp code

commit e457dc2c385ab62b36df7f96c949e6b90ed2034a
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Mon Apr 17 14:29:29 2023 +0300

    all: imp code more

commit c2df20d0125d368d0155af0808af979921763e1f
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Fri Apr 14 15:07:53 2023 +0300

    all: imp code

commit a4e9ffb9ae769c828c22d62ddf231f7bcfea14db
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Apr 12 19:19:35 2023 +0300

    dhcpd: fix test more

commit 138d89414f1a89558b23962acb7174dce28346d9
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Apr 12 18:08:29 2023 +0300

    dhcpd: fix test

commit e07e7a23e7c913951c8ecb38c12a3345ebe473be
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Apr 12 17:22:27 2023 +0300

    all: upd chlog

commit 1b6a76e79cf4beed9ca980766ce97930b375bfde
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Apr 12 13:24:11 2023 +0300

    all: migrate leases db
This commit is contained in:
Stanislav Chzhen 2023-04-18 15:12:11 +03:00
parent 76a74b271b
commit a91a257b15
16 changed files with 283 additions and 199 deletions
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1
.gitignore vendored
View file

@ -21,7 +21,6 @@
/snapcraft_login
AdGuardHome*
coverage.txt
leases.db
node_modules/
!/build/gitkeep

2
CHANGELOG.md
View file

@ -85,6 +85,8 @@ See also the [v0.107.28 GitHub milestone][ms-v0.107.28].
### Changed
- Stored DHCP leases moved from `leases.db` to `data/leases.json`. The file
format has also been optimized.
- ARPA domain names containing a subnet within private networks now also
considered private, behaving closer to [RFC 6761][rfc6761] ([#5567]).

12
internal/dhcpd/config.go
View file

@ -31,8 +31,16 @@ type ServerConfig struct {
Conf4 V4ServerConf `yaml:"dhcpv4"`
Conf6 V6ServerConf `yaml:"dhcpv6"`
WorkDir string `yaml:"-"`
DBFilePath string `yaml:"-"`
// WorkDir is used to store DHCP leases.
//
// Deprecated: Remove it when migration of DHCP leases will not be needed.
WorkDir string `yaml:"-"`
// DataDir is used to store DHCP leases.
DataDir string `yaml:"-"`
// dbFilePath is the path to the file with stored DHCP leases.
dbFilePath string `yaml:"-"`
}
// DHCPServer - DHCP server interface

175
internal/dhcpd/db.go
View file

@ -5,43 +5,34 @@ package dhcpd
import (
"encoding/json"
"fmt"
"net"
"net/netip"
"os"
"time"
"github.com/AdguardTeam/golibs/errors"
"github.com/AdguardTeam/golibs/log"
"github.com/google/renameio/maybe"
"golang.org/x/exp/slices"
)
const dbFilename = "leases.db"
const (
// dataFilename contains saved leases.
dataFilename = "leases.json"
type leaseJSON struct {
HWAddr []byte `json:"mac"`
IP []byte `json:"ip"`
Hostname string `json:"host"`
Expiry int64 `json:"exp"`
// dataVersion is the current version of the stored DHCP leases structure.
dataVersion = 1
)
// dataLeases is the structure of the stored DHCP leases.
type dataLeases struct {
// Version is the current version of the structure.
Version int `json:"version"`
// Leases is the list containing stored DHCP leases.
Leases []*Lease `json:"leases"`
}
func normalizeIP(ip net.IP) net.IP {
ip4 := ip.To4()
if ip4 != nil {
return ip4
}
return ip
}
// Load lease table from DB
//
// TODO(s.chzhen): Decrease complexity.
// dbLoad loads stored leases.
func (s *server) dbLoad() (err error) {
dynLeases := []*Lease{}
staticLeases := []*Lease{}
v6StaticLeases := []*Lease{}
v6DynLeases := []*Lease{}
data, err := os.ReadFile(s.conf.DBFilePath)
data, err := os.ReadFile(s.conf.dbFilePath)
if err != nil {
if !errors.Is(err, os.ErrNotExist) {
return fmt.Errorf("reading db: %w", err)
@ -50,52 +41,30 @@ func (s *server) dbLoad() (err error) {
return nil
}
obj := []leaseJSON{}
err = json.Unmarshal(data, &obj)
dl := &dataLeases{}
err = json.Unmarshal(data, dl)
if err != nil {
return fmt.Errorf("decoding db: %w", err)
}
numLeases := len(obj)
for i := range obj {
obj[i].IP = normalizeIP(obj[i].IP)
leases := dl.Leases
ip, ok := netip.AddrFromSlice(obj[i].IP)
if !ok {
log.Info("dhcp: invalid IP: %s", obj[i].IP)
continue
}
leases4 := []*Lease{}
leases6 := []*Lease{}
lease := Lease{
HWAddr: obj[i].HWAddr,
IP: ip,
Hostname: obj[i].Hostname,
Expiry: time.Unix(obj[i].Expiry, 0),
IsStatic: obj[i].Expiry == leaseExpireStatic,
}
if len(obj[i].IP) == 16 {
if lease.IsStatic {
v6StaticLeases = append(v6StaticLeases, &lease)
} else {
v6DynLeases = append(v6DynLeases, &lease)
}
for _, l := range leases {
if l.IP.Is4() {
leases4 = append(leases4, l)
} else {
if lease.IsStatic {
staticLeases = append(staticLeases, &lease)
} else {
dynLeases = append(dynLeases, &lease)
}
leases6 = append(leases6, l)
}
}
leases4 := normalizeLeases(staticLeases, dynLeases)
err = s.srv4.ResetLeases(leases4)
if err != nil {
return fmt.Errorf("resetting dhcpv4 leases: %w", err)
}
leases6 := normalizeLeases(v6StaticLeases, v6DynLeases)
if s.srv6 != nil {
err = s.srv6.ResetLeases(leases6)
if err != nil {
@ -104,90 +73,54 @@ func (s *server) dbLoad() (err error) {
}
log.Info("dhcp: loaded leases v4:%d v6:%d total-read:%d from DB",
len(leases4), len(leases6), numLeases)
len(leases4), len(leases6), len(leases))
return nil
}
// Skip duplicate leases
// Static leases have a priority over dynamic leases
func normalizeLeases(staticLeases, dynLeases []*Lease) []*Lease {
leases := []*Lease{}
index := map[string]int{}
for i, lease := range staticLeases {
_, ok := index[lease.HWAddr.String()]
if ok {
continue // skip the lease with the same HW address
}
index[lease.HWAddr.String()] = i
leases = append(leases, lease)
}
for i, lease := range dynLeases {
_, ok := index[lease.HWAddr.String()]
if ok {
continue // skip the lease with the same HW address
}
index[lease.HWAddr.String()] = i
leases = append(leases, lease)
}
return leases
}
// Store lease table in DB
// dbStore stores DHCP leases.
func (s *server) dbStore() (err error) {
// Use an empty slice here as opposed to nil so that it doesn't write
// "null" into the database file if leases are empty.
leases := []leaseJSON{}
leases := []*Lease{}
leases4 := s.srv4.getLeasesRef()
for _, l := range leases4 {
if l.Expiry.Unix() == 0 {
continue
}
lease := leaseJSON{
HWAddr: l.HWAddr,
IP: l.IP.AsSlice(),
Hostname: l.Hostname,
Expiry: l.Expiry.Unix(),
}
leases = append(leases, lease)
}
leases = append(leases, leases4...)
if s.srv6 != nil {
leases6 := s.srv6.getLeasesRef()
for _, l := range leases6 {
if l.Expiry.Unix() == 0 {
continue
}
lease := leaseJSON{
HWAddr: l.HWAddr,
IP: l.IP.AsSlice(),
Hostname: l.Hostname,
Expiry: l.Expiry.Unix(),
}
leases = append(leases, lease)
}
leases = append(leases, leases6...)
}
var data []byte
data, err = json.Marshal(leases)
return writeDB(s.conf.dbFilePath, leases)
}
// writeDB writes leases to file at path.
func writeDB(path string, leases []*Lease) (err error) {
defer func() { err = errors.Annotate(err, "writing db: %w") }()
slices.SortFunc(leases, func(a, b *Lease) bool {
return a.Hostname < b.Hostname
})
dl := &dataLeases{
Version: dataVersion,
Leases: leases,
}
buf, err := json.Marshal(dl)
if err != nil {
return fmt.Errorf("encoding db: %w", err)
// Don't wrap the error since it's informative enough as is.
return err
}
err = maybe.WriteFile(s.conf.DBFilePath, data, 0o644)
err = maybe.WriteFile(path, buf, 0o644)
if err != nil {
return fmt.Errorf("writing db: %w", err)
// Don't wrap the error since it's informative enough as is.
return err
}
log.Info("dhcp: stored %d leases in db", len(leases))
log.Info("dhcp: stored %d leases in %q", len(leases), path)
return nil
}

22
internal/dhcpd/dhcpd.go
View file

@ -15,13 +15,6 @@ import (
)
const (
// leaseExpireStatic is used to define the Expiry field for static
// leases.
//
// TODO(e.burkov): Remove it when static leases determining mechanism
// will be improved.
leaseExpireStatic = 1
// DefaultDHCPLeaseTTL is the default time-to-live for leases.
DefaultDHCPLeaseTTL = uint32(timeutil.Day / time.Second)
@ -35,10 +28,10 @@ const (
defaultBackoff time.Duration = 500 * time.Millisecond
)
// Lease contains the necessary information about a DHCP lease
// Lease contains the necessary information about a DHCP lease. It's used in
// various places. So don't change it without good reason.
type Lease struct {
// Expiry is the expiration time of the lease. The unix timestamp value
// of 1 means that this is a static lease.
// Expiry is the expiration time of the lease.
Expiry time.Time `json:"expires"`
// Hostname of the client.
@ -238,7 +231,7 @@ func Create(conf *ServerConfig) (s *server, err error) {
LocalDomainName: conf.LocalDomainName,
DBFilePath: filepath.Join(conf.WorkDir, dbFilename),
dbFilePath: filepath.Join(conf.DataDir, dataFilename),
},
}
@ -279,6 +272,13 @@ func Create(conf *ServerConfig) (s *server, err error) {
return nil, fmt.Errorf("neither dhcpv4 nor dhcpv6 srv is configured")
}
// Migrate leases db if needed.
err = migrateDB(conf)
if err != nil {
// Don't wrap the error since it's informative enough as is.
return nil, err
}
// Don't delay database loading until the DHCP server is started,
// because we need static leases functionality available beforehand.
err = s.dbLoad()

41
internal/dhcpd/dhcpd_unix_test.go
View file

@ -5,7 +5,7 @@ package dhcpd
import (
"net"
"net/netip"
"os"
"path/filepath"
"testing"
"time"
@ -27,7 +27,7 @@ func TestDB(t *testing.T) {
var err error
s := server{
conf: &ServerConfig{
DBFilePath: dbFilename,
dbFilePath: filepath.Join(t.TempDir(), dataFilename),
},
}
@ -67,8 +67,6 @@ func TestDB(t *testing.T) {
err = s.dbStore()
require.NoError(t, err)
testutil.CleanupAndRequireSuccess(t, func() (err error) { return os.Remove(dbFilename) })
err = s.srv4.ResetLeases(nil)
require.NoError(t, err)
@ -78,36 +76,13 @@ func TestDB(t *testing.T) {
ll := s.srv4.GetLeases(LeasesAll)
require.Len(t, ll, len(leases))
assert.Equal(t, leases[1].HWAddr, ll[0].HWAddr)
assert.Equal(t, leases[1].IP, ll[0].IP)
assert.True(t, ll[0].IsStatic)
assert.Equal(t, leases[0].HWAddr, ll[0].HWAddr)
assert.Equal(t, leases[0].IP, ll[0].IP)
assert.Equal(t, leases[0].Expiry.Unix(), ll[0].Expiry.Unix())
assert.Equal(t, leases[0].HWAddr, ll[1].HWAddr)
assert.Equal(t, leases[0].IP, ll[1].IP)
assert.Equal(t, leases[0].Expiry.Unix(), ll[1].Expiry.Unix())
}
func TestNormalizeLeases(t *testing.T) {
dynLeases := []*Lease{{
HWAddr: net.HardwareAddr{1, 2, 3, 4},
}, {
HWAddr: net.HardwareAddr{1, 2, 3, 5},
}}
staticLeases := []*Lease{{
HWAddr: net.HardwareAddr{1, 2, 3, 4},
IP: netip.MustParseAddr("0.2.3.4"),
}, {
HWAddr: net.HardwareAddr{2, 2, 3, 4},
}}
leases := normalizeLeases(staticLeases, dynLeases)
require.Len(t, leases, 3)
assert.Equal(t, leases[0].HWAddr, dynLeases[0].HWAddr)
assert.Equal(t, leases[0].IP, staticLeases[0].IP)
assert.Equal(t, leases[1].HWAddr, staticLeases[1].HWAddr)
assert.Equal(t, leases[2].HWAddr, dynLeases[1].HWAddr)
assert.Equal(t, leases[1].HWAddr, ll[1].HWAddr)
assert.Equal(t, leases[1].IP, ll[1].IP)
assert.True(t, ll[1].IsStatic)
}
func TestV4Server_badRange(t *testing.T) {

6
internal/dhcpd/http_unix.go
View file

@ -639,7 +639,7 @@ func (s *server) handleReset(w http.ResponseWriter, r *http.Request) {
return
}
err = os.Remove(s.conf.DBFilePath)
err = os.Remove(s.conf.dbFilePath)
if err != nil && !errors.Is(err, os.ErrNotExist) {
log.Error("dhcp: removing db: %s", err)
}
@ -651,8 +651,8 @@ func (s *server) handleReset(w http.ResponseWriter, r *http.Request) {
LocalDomainName: s.conf.LocalDomainName,
WorkDir: s.conf.WorkDir,
DBFilePath: s.conf.DBFilePath,
DataDir: s.conf.DataDir,
dbFilePath: s.conf.dbFilePath,
}
v4conf := &V4ServerConf{

3
internal/dhcpd/http_unix_test.go
View file

@ -31,8 +31,7 @@ func TestServer_handleDHCPStatus(t *testing.T) {
s, err := Create(&ServerConfig{
Enabled: true,
Conf4: *defaultV4ServerConf(),
WorkDir: t.TempDir(),
DBFilePath: dbFilename,
DataDir: t.TempDir(),
ConfigModified: func() {},
})
require.NoError(t, err)

106
internal/dhcpd/migrate.go Normal file
View file

@ -0,0 +1,106 @@
package dhcpd
import (
"encoding/json"
"net"
"net/netip"
"os"
"path/filepath"
"time"
"github.com/AdguardTeam/golibs/errors"
"github.com/AdguardTeam/golibs/log"
)
const (
// leaseExpireStatic is used to define the Expiry field for static
// leases.
//
// Deprecated: Remove it when migration of DHCP leases will be not needed.
leaseExpireStatic = 1
// dbFilename contains saved leases.
//
// Deprecated: Use dataFilename.
dbFilename = "leases.db"
)
// leaseJSON is the structure of stored lease.
//
// Deprecated: Use [Lease].
type leaseJSON struct {
HWAddr []byte `json:"mac"`
IP []byte `json:"ip"`
Hostname string `json:"host"`
Expiry int64 `json:"exp"`
}
func normalizeIP(ip net.IP) net.IP {
ip4 := ip.To4()
if ip4 != nil {
return ip4
}
return ip
}
// migrateDB migrates stored leases if necessary.
func migrateDB(conf *ServerConfig) (err error) {
defer func() { err = errors.Annotate(err, "migrating db: %w") }()
oldLeasesPath := filepath.Join(conf.WorkDir, dbFilename)
dataDirPath := filepath.Join(conf.DataDir, dataFilename)
file, err := os.Open(oldLeasesPath)
if errors.Is(err, os.ErrNotExist) {
// Nothing to migrate.
return nil
} else if err != nil {
// Don't wrap the error since it's informative enough as is.
return err
}
ljs := []leaseJSON{}
err = json.NewDecoder(file).Decode(&ljs)
if err != nil {
// Don't wrap the error since it's informative enough as is.
return err
}
err = file.Close()
if err != nil {
// Don't wrap the error since it's informative enough as is.
return err
}
leases := []*Lease{}
for _, lj := range ljs {
lj.IP = normalizeIP(lj.IP)
ip, ok := netip.AddrFromSlice(lj.IP)
if !ok {
log.Info("dhcp: invalid IP: %s", lj.IP)
continue
}
lease := &Lease{
Expiry: time.Unix(lj.Expiry, 0),
Hostname: lj.Hostname,
HWAddr: lj.HWAddr,
IP: ip,
IsStatic: lj.Expiry == leaseExpireStatic,
}
leases = append(leases, lease)
}
err = writeDB(dataDirPath, leases)
if err != nil {
// Don't wrap the error since it's informative enough as is.
return err
}
return os.Remove(oldLeasesPath)
}

73
internal/dhcpd/migrate_internal_test.go Normal file
View file

@ -0,0 +1,73 @@
package dhcpd
import (
"encoding/json"
"net"
"net/netip"
"os"
"path/filepath"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
const testData = `[
{"mac":"ESIzRFVm","ip":"AQIDBA==","host":"test1","exp":1},
{"mac":"ZlVEMyIR","ip":"BAMCAQ==","host":"test2","exp":1231231231}
]`
func TestMigrateDB(t *testing.T) {
dir := t.TempDir()
oldLeasesPath := filepath.Join(dir, dbFilename)
dataDirPath := filepath.Join(dir, dataFilename)
err := os.WriteFile(oldLeasesPath, []byte(testData), 0o644)
require.NoError(t, err)
wantLeases := []*Lease{{
Expiry: time.Time{},
Hostname: "test1",
HWAddr: net.HardwareAddr{0x11, 0x22, 0x33, 0x44, 0x55, 0x66},
IP: netip.MustParseAddr("1.2.3.4"),
IsStatic: true,
}, {
Expiry: time.Unix(1231231231, 0),
Hostname: "test2",
HWAddr: net.HardwareAddr{0x66, 0x55, 0x44, 0x33, 0x22, 0x11},
IP: netip.MustParseAddr("4.3.2.1"),
IsStatic: false,
}}
conf := &ServerConfig{
WorkDir: dir,
DataDir: dir,
}
err = migrateDB(conf)
require.NoError(t, err)
_, err = os.Stat(oldLeasesPath)
require.ErrorIs(t, err, os.ErrNotExist)
var data []byte
data, err = os.ReadFile(dataDirPath)
require.NoError(t, err)
dl := &dataLeases{}
err = json.Unmarshal(data, dl)
require.NoError(t, err)
leases := dl.Leases
for i, wl := range wantLeases {
assert.Equal(t, wl.Hostname, leases[i].Hostname)
assert.Equal(t, wl.HWAddr, leases[i].HWAddr)
assert.Equal(t, wl.IP, leases[i].IP)
assert.Equal(t, wl.IsStatic, leases[i].IsStatic)
require.True(t, wl.Expiry.Equal(leases[i].Expiry))
}
}

3
internal/dhcpd/v4_unix.go
View file

@ -256,6 +256,8 @@ func (s *v4Server) rmLeaseByIndex(i int) {
// Remove a dynamic lease with the same properties
// Return error if a static lease is found
//
// TODO(s.chzhen): Refactor the code.
func (s *v4Server) rmDynamicLease(lease *Lease) (err error) {
for i, l := range s.leases {
isStatic := l.IsStatic
@ -357,7 +359,6 @@ func (s *v4Server) AddStaticLease(l *Lease) (err error) {
return fmt.Errorf("can't assign the gateway IP %s to the lease", gwIP)
}
l.Expiry = time.Unix(leaseExpireStatic, 0)
l.IsStatic = true
err = netutil.ValidateMAC(l.HWAddr)

5
internal/dhcpd/v4_unix_test.go
View file

@ -68,7 +68,6 @@ func TestV4Server_leasing(t *testing.T) {
t.Run("add_static", func(t *testing.T) {
err := s.AddStaticLease(&Lease{
Expiry: time.Unix(leaseExpireStatic, 0),
Hostname: staticName,
HWAddr: staticMAC,
IP: staticIP,
@ -78,7 +77,6 @@ func TestV4Server_leasing(t *testing.T) {
t.Run("same_name", func(t *testing.T) {
err = s.AddStaticLease(&Lease{
Expiry: time.Unix(leaseExpireStatic, 0),
Hostname: staticName,
HWAddr: anotherMAC,
IP: anotherIP,
@ -93,7 +91,6 @@ func TestV4Server_leasing(t *testing.T) {
" (" + staticMAC.String() + "): static lease already exists"
err = s.AddStaticLease(&Lease{
Expiry: time.Unix(leaseExpireStatic, 0),
Hostname: anotherName,
HWAddr: staticMAC,
IP: anotherIP,
@ -108,7 +105,6 @@ func TestV4Server_leasing(t *testing.T) {
" (" + anotherMAC.String() + "): static lease already exists"
err = s.AddStaticLease(&Lease{
Expiry: time.Unix(leaseExpireStatic, 0),
Hostname: anotherName,
HWAddr: anotherMAC,
IP: staticIP,
@ -784,7 +780,6 @@ func TestV4Server_FindMACbyIP(t *testing.T) {
s := &v4Server{
leases: []*Lease{{
Expiry: time.Unix(leaseExpireStatic, 0),
Hostname: staticName,
HWAddr: staticMAC,
IP: staticIP,

16
internal/dhcpd/v6_unix.go
View file

@ -66,8 +66,7 @@ func (s *v6Server) ResetLeases(leases []*Lease) (err error) {
s.leases = nil
for _, l := range leases {
ip := net.IP(l.IP.AsSlice())
if l.Expiry.Unix() != leaseExpireStatic &&
!ip6InRange(s.conf.ipStart, ip) {
if !l.IsStatic && !ip6InRange(s.conf.ipStart, ip) {
log.Debug("dhcpv6: skipping a lease with IP %v: not within current IP range", l.IP)
@ -89,7 +88,7 @@ func (s *v6Server) GetLeases(flags GetLeasesFlags) (leases []*Lease) {
leases = []*Lease{}
s.leasesLock.Lock()
for _, l := range s.leases {
if l.Expiry.Unix() == leaseExpireStatic {
if l.IsStatic {
if (flags & LeasesStatic) != 0 {
leases = append(leases, l.Clone())
}
@ -150,7 +149,7 @@ func (s *v6Server) rmDynamicLease(lease *Lease) (err error) {
l := s.leases[i]
if bytes.Equal(l.HWAddr, lease.HWAddr) {
if l.Expiry.Unix() == leaseExpireStatic {
if l.IsStatic {
return fmt.Errorf("static lease already exists")
}
@ -163,7 +162,7 @@ func (s *v6Server) rmDynamicLease(lease *Lease) (err error) {
}
if l.IP == lease.IP {
if l.Expiry.Unix() == leaseExpireStatic {
if l.IsStatic {
return fmt.Errorf("static lease already exists")
}
@ -187,7 +186,7 @@ func (s *v6Server) AddStaticLease(l *Lease) (err error) {
return fmt.Errorf("validating lease: %w", err)
}
l.Expiry = time.Unix(leaseExpireStatic, 0)
l.IsStatic = true
s.leasesLock.Lock()
err = s.rmDynamicLease(l)
@ -274,8 +273,7 @@ func (s *v6Server) findLease(mac net.HardwareAddr) *Lease {
func (s *v6Server) findExpiredLease() int {
now := time.Now().Unix()
for i, lease := range s.leases {
if lease.Expiry.Unix() != leaseExpireStatic &&
lease.Expiry.Unix() <= now {
if !lease.IsStatic && lease.Expiry.Unix() <= now {
return i
}
}
@ -421,7 +419,7 @@ func (s *v6Server) commitLease(msg *dhcpv6.Message, lease *Lease) time.Duration
dhcpv6.MessageTypeRenew,
dhcpv6.MessageTypeRebind:
if lease.Expiry.Unix() != leaseExpireStatic {
if !lease.IsStatic {
s.commitDynamicLease(lease)
}
}

6
internal/dhcpd/v6_unix_test.go
View file

@ -44,7 +44,7 @@ func TestV6_AddRemove_static(t *testing.T) {
assert.Equal(t, l.IP, ls[0].IP)
assert.Equal(t, l.HWAddr, ls[0].HWAddr)
assert.EqualValues(t, leaseExpireStatic, ls[0].Expiry.Unix())
assert.True(t, ls[0].IsStatic)
// Try to remove non-existent static lease.
err = s.RemoveStaticLease(&Lease{
@ -103,7 +103,7 @@ func TestV6_AddReplace(t *testing.T) {
for i, l := range ls {
assert.Equal(t, stLeases[i].IP, l.IP)
assert.Equal(t, stLeases[i].HWAddr, l.HWAddr)
assert.EqualValues(t, leaseExpireStatic, l.Expiry.Unix())
assert.True(t, l.IsStatic)
}
}
@ -327,7 +327,6 @@ func TestV6_FindMACbyIP(t *testing.T) {
s := &v6Server{
leases: []*Lease{{
Expiry: time.Unix(leaseExpireStatic, 0),
Hostname: staticName,
HWAddr: staticMAC,
IP: staticIP,
@ -341,7 +340,6 @@ func TestV6_FindMACbyIP(t *testing.T) {
}
s.leases = []*Lease{{
Expiry: time.Unix(leaseExpireStatic, 0),
Hostname: staticName,
HWAddr: staticMAC,
IP: staticIP,

9
internal/home/clients_test.go
View file

@ -3,14 +3,12 @@ package home
import (
"net"
"net/netip"
"os"
"runtime"
"testing"
"time"
"github.com/AdguardTeam/AdGuardHome/internal/dhcpd"
"github.com/AdguardTeam/AdGuardHome/internal/filtering"
"github.com/AdguardTeam/golibs/testutil"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
@ -283,8 +281,8 @@ func TestClientsAddExisting(t *testing.T) {
// First, init a DHCP server with a single static lease.
config := &dhcpd.ServerConfig{
Enabled: true,
DBFilePath: "leases.db",
Enabled: true,
DataDir: t.TempDir(),
Conf4: dhcpd.V4ServerConf{
Enabled: true,
GatewayIP: netip.MustParseAddr("1.2.3.1"),
@ -296,9 +294,6 @@ func TestClientsAddExisting(t *testing.T) {
dhcpServer, err := dhcpd.Create(config)
require.NoError(t, err)
testutil.CleanupAndRequireSuccess(t, func() (err error) {
return os.Remove("leases.db")
})
clients.dhcpServer = dhcpServer

2
internal/home/home.go
View file

@ -306,7 +306,9 @@ func setupConfig(opts options) (err error) {
return fmt.Errorf("initializing safesearch: %w", err)
}
//lint:ignore SA1019 Migration is not over.
config.DHCP.WorkDir = Context.workDir
config.DHCP.DataDir = Context.getDataDir()
config.DHCP.HTTPRegister = httpRegister
config.DHCP.ConfigModified = onConfigModified