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Pull request 2019: 1700-update-static-lease

Browse Source 
Updates #1700.

Squashed commit of the following:

commit b3fdf0a492e38be594500b1db4da20bf70cd7096
Merge: 507cb9bc7 4479b32ad
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Oct 5 12:53:30 2023 +0300

    Merge branch 'master' into 1700-update-static-lease

commit 507cb9bc7bec9884ce7db2f42688d0a409015756
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Oct 4 18:54:06 2023 +0300

    all: upd chlog

commit 0736b97bdd652a3da13bce4177c64daa0a3da2af
Author: Ildar Kamalov <ik@adguard.com>
Date:   Wed Oct 4 16:05:35 2023 +0300

    client: fix update action

commit 351986bb03b1c525f00b1e7cd44a3dab8dd9eb97
Author: Ildar Kamalov <ik@adguard.com>
Date:   Wed Oct 4 16:01:38 2023 +0300

    client: update static lease

commit 3c328283c8374480132a9907e1738978c0b0384f
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Sep 28 20:06:29 2023 +0300

    dhcpd: fix err msg

commit 5b2f8f51b427ae07b227357fa3cc073a3278079b
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Sep 28 16:28:07 2023 +0300

    dhcpd: imp code

commit a9d24e816f602ad207e42124ddbb56ecdb0e03f6
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Sep 27 17:43:04 2023 +0300

    all: add tests

commit 453785796191179ef4136b613f4dd8665703b364
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Tue Sep 26 20:14:17 2023 +0300

    dhcpd: update static lease
This commit is contained in:
Stanislav Chzhen 2023-10-05 13:54:21 +03:00
parent 4479b32ad4
commit e305bd8e40
20 changed files with 634 additions and 235 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
CHANGELOG.md
View File

@ -25,9 +25,11 @@ NOTE: Add new changes BELOW THIS COMMENT.
### Added
- Ability to edit static leases on *DHCP settings* page ([#1700]).
- Ability to specify for how long clients should cache a filtered response,
using the *Blocked response TTL* field on the *DNS settings* page ([#4569]).
[#1700]: https://github.com/AdguardTeam/AdGuardHome/issues/1700
[#4569]: https://github.com/AdguardTeam/AdGuardHome/issues/4569
### Fixed

2
client/src/__locales/en.json
View File

@ -73,7 +73,9 @@
"dhcp_dynamic_ip_found": "Your system uses dynamic IP address configuration for interface <0>{{interfaceName}}</0>. In order to use DHCP server, a static IP address must be set. Your current IP address is <0>{{ipAddress}}</0>. AdGuard Home will automatically set this IP address as static if you press the \"Enable DHCP server\" button.",
"dhcp_lease_added": "Static lease \"{{key}}\" successfully added",
"dhcp_lease_deleted": "Static lease \"{{key}}\" successfully deleted",
"dhcp_lease_updated": "Static lease \"{{key}}\" successfully updated",
"dhcp_new_static_lease": "New static lease",
"dhcp_edit_static_lease": "Edit static lease",
"dhcp_static_leases_not_found": "No DHCP static leases found",
"dhcp_add_static_lease": "Add static lease",
"dhcp_reset_leases": "Reset all leases",

18
client/src/actions/index.js
View File

@ -660,6 +660,24 @@ export const removeStaticLease = (config) => async (dispatch) => {
}
};
export const updateStaticLeaseRequest = createAction('UPDATE_STATIC_LEASE_REQUEST');
export const updateStaticLeaseFailure = createAction('UPDATE_STATIC_LEASE_FAILURE');
export const updateStaticLeaseSuccess = createAction('UPDATE_STATIC_LEASE_SUCCESS');
export const updateStaticLease = (config) => async (dispatch) => {
dispatch(updateStaticLeaseRequest());
try {
await apiClient.updateStaticLease(config);
dispatch(updateStaticLeaseSuccess(config));
dispatch(addSuccessToast(i18next.t('dhcp_lease_updated', { key: config.hostname || config.ip })));
dispatch(toggleLeaseModal());
dispatch(getDhcpStatus());
} catch (error) {
dispatch(addErrorToast({ error }));
dispatch(updateStaticLeaseFailure());
}
};
export const removeToast = createAction('REMOVE_TOAST');
export const toggleBlocking = (

10
client/src/api/Api.js
View File

@ -274,6 +274,8 @@ class Api {
DHCP_REMOVE_STATIC_LEASE = { path: 'dhcp/remove_static_lease', method: 'POST' };
DHCP_UPDATE_STATIC_LEASE = { path: 'dhcp/update_static_lease', method: 'POST' };
DHCP_RESET = { path: 'dhcp/reset', method: 'POST' };
DHCP_LEASES_RESET = { path: 'dhcp/reset_leases', method: 'POST' };
@ -320,6 +322,14 @@ class Api {
return this.makeRequest(path, method, parameters);
}
updateStaticLease(config) {
const { path, method } = this.DHCP_UPDATE_STATIC_LEASE;
const parameters = {
data: config,
};
return this.makeRequest(path, method, parameters);
}
resetDhcp() {
const { path, method } = this.DHCP_RESET;
return this.makeRequest(path, method);

3
client/src/components/Settings/Dhcp/StaticLeases/Form.js
View File

@ -22,6 +22,7 @@ const Form = ({
submitting,
processingAdding,
cidr,
isEdit,
}) => {
const { t } = useTranslation();
const dispatch = useDispatch();
@ -45,6 +46,7 @@ const Form = ({
placeholder={t('form_enter_mac')}
normalize={normalizeMac}
validate={[validateRequiredValue, validateMac]}
disabled={isEdit}
/>
</div>
<div className="form__group">
@ -112,6 +114,7 @@ Form.propTypes = {
submitting: PropTypes.bool.isRequired,
processingAdding: PropTypes.bool.isRequired,
cidr: PropTypes.string.isRequired,
isEdit: PropTypes.bool,
};
export default reduxForm({ form: FORM_NAME.LEASE })(Form);

10
client/src/components/Settings/Dhcp/StaticLeases/Modal.js
View File

@ -5,9 +5,11 @@ import ReactModal from 'react-modal';
import { shallowEqual, useDispatch, useSelector } from 'react-redux';
import Form from './Form';
import { toggleLeaseModal } from '../../../../actions';
import { MODAL_TYPE } from '../../../../helpers/constants';
const Modal = ({
isModalOpen,
modalType,
handleSubmit,
processingAdding,
cidr,
@ -32,7 +34,11 @@ const Modal = ({
<div className="modal-content">
<div className="modal-header">
<h4 className="modal-title">
<Trans>dhcp_new_static_lease</Trans>
{modalType === MODAL_TYPE.EDIT_LEASE ? (
<Trans>dhcp_edit_static_lease</Trans>
) : (
<Trans>dhcp_new_static_lease</Trans>
)}
</h4>
<button type="button" className="close" onClick={toggleModal}>
<span className="sr-only">Close</span>
@ -53,6 +59,7 @@ const Modal = ({
cidr={cidr}
rangeStart={rangeStart}
rangeEnd={rangeEnd}
isEdit={modalType === MODAL_TYPE.EDIT_LEASE}
/>
</div>
</ReactModal>
@ -61,6 +68,7 @@ const Modal = ({
Modal.propTypes = {
isModalOpen: PropTypes.bool.isRequired,
modalType: PropTypes.string.isRequired,
handleSubmit: PropTypes.func.isRequired,
processingAdding: PropTypes.bool.isRequired,
cidr: PropTypes.string.isRequired,

59
client/src/components/Settings/Dhcp/StaticLeases/index.js
View File

@ -3,10 +3,15 @@ import PropTypes from 'prop-types';
import ReactTable from 'react-table';
import { Trans, useTranslation } from 'react-i18next';
import { useDispatch } from 'react-redux';
import { LEASES_TABLE_DEFAULT_PAGE_SIZE } from '../../../../helpers/constants';
import { LEASES_TABLE_DEFAULT_PAGE_SIZE, MODAL_TYPE } from '../../../../helpers/constants';
import { sortIp } from '../../../../helpers/helpers';
import Modal from './Modal';
import { addStaticLease, removeStaticLease } from '../../../../actions';
import {
addStaticLease,
removeStaticLease,
toggleLeaseModal,
updateStaticLease,
} from '../../../../actions';
const cellWrap = ({ value }) => (
<div className="logs__row o-hidden">
@ -18,8 +23,10 @@ const cellWrap = ({ value }) => (
const StaticLeases = ({
isModalOpen,
modalType,
processingAdding,
processingDeleting,
processingUpdating,
staticLeases,
cidr,
rangeStart,
@ -31,7 +38,12 @@ const StaticLeases = ({
const handleSubmit = (data) => {
const { mac, ip, hostname } = data;
dispatch(addStaticLease({ mac, ip, hostname }));
if (modalType === MODAL_TYPE.EDIT_LEASE) {
dispatch(updateStaticLease({ mac, ip, hostname }));
} else {
dispatch(addStaticLease({ mac, ip, hostname }));
}
};
const handleDelete = (ip, mac, hostname = '') => {
@ -80,19 +92,35 @@ const StaticLeases = ({
Cell: (row) => {
const { ip, mac, hostname } = row.original;
return <div className="logs__row logs__row--center">
<button
return (
<div className="logs__row logs__row--center">
<button
type="button"
className="btn btn-icon btn-icon--green btn-outline-secondary btn-sm"
title={t('delete_table_action')}
disabled={processingDeleting}
className="btn btn-icon btn-outline-primary btn-sm mr-2"
onClick={() => dispatch(toggleLeaseModal({
type: MODAL_TYPE.EDIT_LEASE,
config: { ip, mac, hostname },
}))}
disabled={processingUpdating}
title={t('edit_table_action')}
>
<svg className="icons icon12">
<use xlinkHref="#edit" />
</svg>
</button>
<button
type="button"
className="btn btn-icon btn-outline-secondary btn-sm"
onClick={() => handleDelete(ip, mac, hostname)}
>
<svg className="icons">
<use xlinkHref="#delete"/>
</svg>
</button>
</div>;
disabled={processingDeleting}
title={t('delete_table_action')}
>
<svg className="icons icon12">
<use xlinkHref="#delete" />
</svg>
</button>
</div>
);
},
},
]}
@ -105,6 +133,7 @@ const StaticLeases = ({
/>
<Modal
isModalOpen={isModalOpen}
modalType={modalType}
handleSubmit={handleSubmit}
processingAdding={processingAdding}
cidr={cidr}
@ -119,8 +148,10 @@ const StaticLeases = ({
StaticLeases.propTypes = {
staticLeases: PropTypes.array.isRequired,
isModalOpen: PropTypes.bool.isRequired,
modalType: PropTypes.string.isRequired,
processingAdding: PropTypes.bool.isRequired,
processingDeleting: PropTypes.bool.isRequired,
processingUpdating: PropTypes.bool.isRequired,
cidr: PropTypes.string.isRequired,
rangeStart: PropTypes.string,
rangeEnd: PropTypes.string,

5
client/src/components/Settings/Dhcp/index.js
View File

@ -49,6 +49,7 @@ const Dhcp = () => {
isModalOpen,
processingAdding,
processingDeleting,
processingUpdating,
processingDhcp,
v4,
v6,
@ -56,6 +57,7 @@ const Dhcp = () => {
enabled,
dhcp_available,
interfaces,
modalType,
} = useSelector((state) => state.dhcp, shallowEqual);
const interface_name = useSelector(
@ -273,8 +275,11 @@ const Dhcp = () => {
<StaticLeases
staticLeases={staticLeases}
isModalOpen={isModalOpen}
toggleModal={toggleModal}
modalType={modalType}
processingAdding={processingAdding}
processingDeleting={processingDeleting}
processingUpdating={processingUpdating}
cidr={cidr}
rangeStart={dhcp?.values?.v4?.range_start}
rangeEnd={dhcp?.values?.v4?.range_end}

1
client/src/helpers/constants.js
View File

@ -175,6 +175,7 @@ export const MODAL_TYPE = {
CHOOSE_FILTERING_LIST: 'CHOOSE_FILTERING_LIST',
ADD_REWRITE: 'ADD_REWRITE',
EDIT_REWRITE: 'EDIT_REWRITE',
EDIT_LEASE: 'EDIT_LEASE',
};
export const CLIENT_ID = {

15
client/src/reducers/dhcp.js
View File

@ -128,7 +128,8 @@ const dhcp = handleActions(
const newState = {
...state,
isModalOpen: !state.isModalOpen,
leaseModalConfig: payload,
modalType: payload?.type || '',
leaseModalConfig: payload?.config,
};
return newState;
},
@ -175,6 +176,16 @@ const dhcp = handleActions(
};
return newState;
},
[actions.updateStaticLeaseRequest]: (state) => ({ ...state, processingUpdating: true }),
[actions.updateStaticLeaseFailure]: (state) => ({ ...state, processingUpdating: false }),
[actions.updateStaticLeaseSuccess]: (state) => {
const newState = {
...state,
processingUpdating: false,
};
return newState;
},
},
{
processing: true,
@ -184,6 +195,7 @@ const dhcp = handleActions(
processingConfig: false,
processingAdding: false,
processingDeleting: false,
processingUpdating: false,
enabled: false,
interface_name: '',
check: null,
@ -202,6 +214,7 @@ const dhcp = handleActions(
staticLeases: [],
isModalOpen: false,
leaseModalConfig: undefined,
modalType: '',
dhcp_available: false,
},
);

3
internal/dhcpd/config.go
View File

@ -57,6 +57,9 @@ type DHCPServer interface {
// RemoveStaticLease - remove a static lease
RemoveStaticLease(l *Lease) (err error)
// UpdateStaticLease updates IP, hostname of the lease.
UpdateStaticLease(l *Lease) (err error)
// FindMACbyIP returns a MAC address by the IP address of its lease, if
// there is one.
FindMACbyIP(ip netip.Addr) (mac net.HardwareAddr)

100
internal/dhcpd/http_unix.go
View File

@ -5,6 +5,7 @@ package dhcpd
import (
"encoding/json"
"fmt"
"io"
"net"
"net/http"
"net/netip"
@ -290,12 +291,12 @@ func (s *server) handleDHCPSetConfigV6(
func (s *server) createServers(conf *dhcpServerConfigJSON) (srv4, srv6 DHCPServer, err error) {
srv4, v4Enabled, err := s.handleDHCPSetConfigV4(conf)
if err != nil {
return nil, nil, fmt.Errorf("bad dhcpv4 configuration: %s", err)
return nil, nil, fmt.Errorf("bad dhcpv4 configuration: %w", err)
}
srv6, v6Enabled, err := s.handleDHCPSetConfigV6(conf)
if err != nil {
return nil, nil, fmt.Errorf("bad dhcpv6 configuration: %s", err)
return nil, nil, fmt.Errorf("bad dhcpv6 configuration: %w", err)
}
if conf.Enabled == aghalg.NBTrue && !v4Enabled && !v6Enabled {
@ -424,7 +425,7 @@ func newNetInterfaceJSON(iface net.Interface) (out *netInterfaceJSON, err error)
addrs, err := iface.Addrs()
if err != nil {
return nil, fmt.Errorf(
"failed to get addresses for interface %s: %s",
"failed to get addresses for interface %s: %w",
iface.Name,
err,
)
@ -590,82 +591,78 @@ func setOtherDHCPResult(ifaceName string, result *dhcpSearchResult) {
}
}
func (s *server) handleDHCPAddStaticLease(w http.ResponseWriter, r *http.Request) {
// parseLease parses a lease from r. If there is no error returns DHCPServer
// and *Lease. r must be non-nil.
func (s *server) parseLease(r io.Reader) (srv DHCPServer, lease *Lease, err error) {
l := &leaseStatic{}
err := json.NewDecoder(r.Body).Decode(l)
err = json.NewDecoder(r).Decode(l)
if err != nil {
aghhttp.Error(r, w, http.StatusBadRequest, "json.Decode: %s", err)
return
return nil, nil, fmt.Errorf("decoding json: %w", err)
}
if !l.IP.IsValid() {
aghhttp.Error(r, w, http.StatusBadRequest, "invalid IP")
return
return nil, nil, errors.Error("invalid ip")
}
l.IP = l.IP.Unmap()
var srv DHCPServer
if l.IP.Is4() {
lease, err = l.toLease()
if err != nil {
return nil, nil, fmt.Errorf("parsing: %w", err)
}
if lease.IP.Is4() {
srv = s.srv4
} else {
srv = s.srv6
}
lease, err := l.toLease()
if err != nil {
aghhttp.Error(r, w, http.StatusBadRequest, "parsing: %s", err)
return srv, lease, nil
}
return
}
err = srv.AddStaticLease(lease)
// handleDHCPAddStaticLease is the handler for the POST
// /control/dhcp/add_static_lease HTTP API.
func (s *server) handleDHCPAddStaticLease(w http.ResponseWriter, r *http.Request) {
srv, lease, err := s.parseLease(r.Body)
if err != nil {
aghhttp.Error(r, w, http.StatusBadRequest, "%s", err)
return
}
if err = srv.AddStaticLease(lease); err != nil {
aghhttp.Error(r, w, http.StatusBadRequest, "%s", err)
}
}
// handleDHCPRemoveStaticLease is the handler for the POST
// /control/dhcp/remove_static_lease HTTP API.
func (s *server) handleDHCPRemoveStaticLease(w http.ResponseWriter, r *http.Request) {
l := &leaseStatic{}
err := json.NewDecoder(r.Body).Decode(l)
if err != nil {
aghhttp.Error(r, w, http.StatusBadRequest, "json.Decode: %s", err)
return
}
if !l.IP.IsValid() {
aghhttp.Error(r, w, http.StatusBadRequest, "invalid IP")
return
}
l.IP = l.IP.Unmap()
var srv DHCPServer
if l.IP.Is4() {
srv = s.srv4
} else {
srv = s.srv6
}
lease, err := l.toLease()
if err != nil {
aghhttp.Error(r, w, http.StatusBadRequest, "parsing: %s", err)
return
}
err = srv.RemoveStaticLease(lease)
srv, lease, err := s.parseLease(r.Body)
if err != nil {
aghhttp.Error(r, w, http.StatusBadRequest, "%s", err)
return
}
if err = srv.RemoveStaticLease(lease); err != nil {
aghhttp.Error(r, w, http.StatusBadRequest, "%s", err)
}
}
// handleDHCPUpdateStaticLease is the handler for the POST
// /control/dhcp/update_static_lease HTTP API.
func (s *server) handleDHCPUpdateStaticLease(w http.ResponseWriter, r *http.Request) {
srv, lease, err := s.parseLease(r.Body)
if err != nil {
aghhttp.Error(r, w, http.StatusBadRequest, "%s", err)
return
}
if err = srv.UpdateStaticLease(lease); err != nil {
aghhttp.Error(r, w, http.StatusBadRequest, "%s", err)
}
}
func (s *server) handleReset(w http.ResponseWriter, r *http.Request) {
@ -729,6 +726,7 @@ func (s *server) registerHandlers() {
s.conf.HTTPRegister(http.MethodPost, "/control/dhcp/find_active_dhcp", s.handleDHCPFindActiveServer)
s.conf.HTTPRegister(http.MethodPost, "/control/dhcp/add_static_lease", s.handleDHCPAddStaticLease)
s.conf.HTTPRegister(http.MethodPost, "/control/dhcp/remove_static_lease", s.handleDHCPRemoveStaticLease)
s.conf.HTTPRegister(http.MethodPost, "/control/dhcp/update_static_lease", s.handleDHCPUpdateStaticLease)
s.conf.HTTPRegister(http.MethodPost, "/control/dhcp/reset", s.handleReset)
s.conf.HTTPRegister(http.MethodPost, "/control/dhcp/reset_leases", s.handleResetLeases)
}

319
internal/dhcpd/http_unix_internal_test.go Normal file
View File

@ -0,0 +1,319 @@
//go:build darwin || freebsd || linux || openbsd
package dhcpd
import (
"bytes"
"encoding/json"
"net/http"
"net/http/httptest"
"net/netip"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// defaultResponse is a helper that returns the response with default
// configuration.
func defaultResponse() *dhcpStatusResponse {
conf4 := defaultV4ServerConf()
conf4.LeaseDuration = 86400
resp := &dhcpStatusResponse{
V4: *conf4,
V6: V6ServerConf{},
Leases: []*leaseDynamic{},
StaticLeases: []*leaseStatic{},
Enabled: true,
}
return resp
}
// handleLease is the helper function that calls handler with provided static
// lease as body and returns modified response recorder.
func handleLease(t *testing.T, lease *leaseStatic, handler http.HandlerFunc) (w *httptest.ResponseRecorder) {
t.Helper()
w = httptest.NewRecorder()
b := &bytes.Buffer{}
err := json.NewEncoder(b).Encode(lease)
require.NoError(t, err)
var r *http.Request
r, err = http.NewRequest(http.MethodPost, "", b)
require.NoError(t, err)
handler(w, r)
return w
}
// checkStatus is a helper that asserts the response of
// [*server.handleDHCPStatus].
func checkStatus(t *testing.T, s *server, want *dhcpStatusResponse) {
w := httptest.NewRecorder()
b := &bytes.Buffer{}
err := json.NewEncoder(b).Encode(&want)
require.NoError(t, err)
r, err := http.NewRequest(http.MethodPost, "", b)
require.NoError(t, err)
s.handleDHCPStatus(w, r)
assert.Equal(t, http.StatusOK, w.Code)
assert.JSONEq(t, b.String(), w.Body.String())
}
func TestServer_handleDHCPStatus(t *testing.T) {
const (
staticName = "static-client"
staticMAC = "aa:aa:aa:aa:aa:aa"
)
staticIP := netip.MustParseAddr("192.168.10.10")
staticLease := &leaseStatic{
HWAddr: staticMAC,
IP: staticIP,
Hostname: staticName,
}
s, err := Create(&ServerConfig{
Enabled: true,
Conf4: *defaultV4ServerConf(),
DataDir: t.TempDir(),
ConfigModified: func() {},
})
require.NoError(t, err)
ok := t.Run("status", func(t *testing.T) {
resp := defaultResponse()
checkStatus(t, s, resp)
})
require.True(t, ok)
ok = t.Run("add_static_lease", func(t *testing.T) {
w := handleLease(t, staticLease, s.handleDHCPAddStaticLease)
assert.Equal(t, http.StatusOK, w.Code)
resp := defaultResponse()
resp.StaticLeases = []*leaseStatic{staticLease}
checkStatus(t, s, resp)
})
require.True(t, ok)
ok = t.Run("add_invalid_lease", func(t *testing.T) {
w := handleLease(t, staticLease, s.handleDHCPAddStaticLease)
assert.Equal(t, http.StatusBadRequest, w.Code)
})
require.True(t, ok)
ok = t.Run("remove_static_lease", func(t *testing.T) {
w := handleLease(t, staticLease, s.handleDHCPRemoveStaticLease)
assert.Equal(t, http.StatusOK, w.Code)
resp := defaultResponse()
checkStatus(t, s, resp)
})
require.True(t, ok)
ok = t.Run("set_config", func(t *testing.T) {
w := httptest.NewRecorder()
resp := defaultResponse()
resp.Enabled = false
b := &bytes.Buffer{}
err = json.NewEncoder(b).Encode(&resp)
require.NoError(t, err)
var r *http.Request
r, err = http.NewRequest(http.MethodPost, "", b)
require.NoError(t, err)
s.handleDHCPSetConfig(w, r)
assert.Equal(t, http.StatusOK, w.Code)
checkStatus(t, s, resp)
})
require.True(t, ok)
}
func TestServer_HandleUpdateStaticLease(t *testing.T) {
const (
leaseV4Name = "static-client-v4"
leaseV4MAC = "44:44:44:44:44:44"
leaseV6Name = "static-client-v6"
leaseV6MAC = "66:66:66:66:66:66"
)
leaseV4IP := netip.MustParseAddr("192.168.10.10")
leaseV6IP := netip.MustParseAddr("2001::6")
const (
leaseV4Pos = iota
leaseV6Pos
)
leases := []*leaseStatic{
leaseV4Pos: {
HWAddr: leaseV4MAC,
IP: leaseV4IP,
Hostname: leaseV4Name,
},
leaseV6Pos: {
HWAddr: leaseV6MAC,
IP: leaseV6IP,
Hostname: leaseV6Name,
},
}
s, err := Create(&ServerConfig{
Enabled: true,
Conf4: *defaultV4ServerConf(),
Conf6: V6ServerConf{},
DataDir: t.TempDir(),
ConfigModified: func() {},
})
require.NoError(t, err)
for _, l := range leases {
w := handleLease(t, l, s.handleDHCPAddStaticLease)
assert.Equal(t, http.StatusOK, w.Code)
}
testCases := []struct {
name string
pos int
lease *leaseStatic
}{{
name: "update_v4_name",
pos: leaseV4Pos,
lease: &leaseStatic{
HWAddr: leaseV4MAC,
IP: leaseV4IP,
Hostname: "updated-client-v4",
},
}, {
name: "update_v4_ip",
pos: leaseV4Pos,
lease: &leaseStatic{
HWAddr: leaseV4MAC,
IP: netip.MustParseAddr("192.168.10.200"),
Hostname: "updated-client-v4",
},
}, {
name: "update_v6_name",
pos: leaseV6Pos,
lease: &leaseStatic{
HWAddr: leaseV6MAC,
IP: leaseV6IP,
Hostname: "updated-client-v6",
},
}, {
name: "update_v6_ip",
pos: leaseV6Pos,
lease: &leaseStatic{
HWAddr: leaseV6MAC,
IP: netip.MustParseAddr("2001::666"),
Hostname: "updated-client-v6",
},
}}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
w := handleLease(t, tc.lease, s.handleDHCPUpdateStaticLease)
assert.Equal(t, http.StatusOK, w.Code)
resp := defaultResponse()
leases[tc.pos] = tc.lease
resp.StaticLeases = leases
checkStatus(t, s, resp)
})
}
}
func TestServer_HandleUpdateStaticLease_validation(t *testing.T) {
const (
leaseV4Name = "static-client-v4"
leaseV4MAC = "44:44:44:44:44:44"
anotherV4Name = "another-client-v4"
anotherV4MAC = "55:55:55:55:55:55"
)
leaseV4IP := netip.MustParseAddr("192.168.10.10")
anotherV4IP := netip.MustParseAddr("192.168.10.20")
leases := []*leaseStatic{{
HWAddr: leaseV4MAC,
IP: leaseV4IP,
Hostname: leaseV4Name,
}, {
HWAddr: anotherV4MAC,
IP: anotherV4IP,
Hostname: anotherV4Name,
}}
s, err := Create(&ServerConfig{
Enabled: true,
Conf4: *defaultV4ServerConf(),
Conf6: V6ServerConf{},
DataDir: t.TempDir(),
ConfigModified: func() {},
})
require.NoError(t, err)
for _, l := range leases {
w := handleLease(t, l, s.handleDHCPAddStaticLease)
assert.Equal(t, http.StatusOK, w.Code)
}
testCases := []struct {
lease *leaseStatic
name string
want string
}{{
name: "v4_unknown_mac",
lease: &leaseStatic{
HWAddr: "aa:aa:aa:aa:aa:aa",
IP: leaseV4IP,
Hostname: leaseV4Name,
},
want: "dhcpv4: updating static lease: can't find lease aa:aa:aa:aa:aa:aa\n",
}, {
name: "update_v4_same_ip",
lease: &leaseStatic{
HWAddr: leaseV4MAC,
IP: anotherV4IP,
Hostname: leaseV4Name,
},
want: "dhcpv4: updating static lease: ip address is not unique\n",
}, {
name: "update_v4_same_name",
lease: &leaseStatic{
HWAddr: leaseV4MAC,
IP: leaseV4IP,
Hostname: anotherV4Name,
},
want: "dhcpv4: updating static lease: hostname is not unique\n",
}}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
w := handleLease(t, tc.lease, s.handleDHCPUpdateStaticLease)
assert.Equal(t, http.StatusBadRequest, w.Code)
assert.Equal(t, tc.want, w.Body.String())
})
}
}

159
internal/dhcpd/http_unix_test.go
View File

@ -1,159 +0,0 @@
//go:build darwin || freebsd || linux || openbsd
package dhcpd
import (
"bytes"
"encoding/json"
"net/http"
"net/http/httptest"
"net/netip"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestServer_handleDHCPStatus(t *testing.T) {
const (
staticName = "static-client"
staticMAC = "aa:aa:aa:aa:aa:aa"
)
staticIP := netip.MustParseAddr("192.168.10.10")
staticLease := &leaseStatic{
HWAddr: staticMAC,
IP: staticIP,
Hostname: staticName,
}
s, err := Create(&ServerConfig{
Enabled: true,
Conf4: *defaultV4ServerConf(),
DataDir: t.TempDir(),
ConfigModified: func() {},
})
require.NoError(t, err)
// checkStatus is a helper that asserts the response of
// [*server.handleDHCPStatus].
checkStatus := func(t *testing.T, want *dhcpStatusResponse) {
w := httptest.NewRecorder()
var req *http.Request
req, err = http.NewRequest(http.MethodGet, "", nil)
require.NoError(t, err)
b := &bytes.Buffer{}
err = json.NewEncoder(b).Encode(&want)
require.NoError(t, err)
s.handleDHCPStatus(w, req)
assert.Equal(t, http.StatusOK, w.Code)
assert.JSONEq(t, b.String(), w.Body.String())
}
// defaultResponse is a helper that returns the response with default
// configuration.
defaultResponse := func() *dhcpStatusResponse {
conf4 := defaultV4ServerConf()
conf4.LeaseDuration = 86400
resp := &dhcpStatusResponse{
V4: *conf4,
V6: V6ServerConf{},
Leases: []*leaseDynamic{},
StaticLeases: []*leaseStatic{},
Enabled: true,
}
return resp
}
ok := t.Run("status", func(t *testing.T) {
resp := defaultResponse()
checkStatus(t, resp)
})
require.True(t, ok)
ok = t.Run("add_static_lease", func(t *testing.T) {
w := httptest.NewRecorder()
b := &bytes.Buffer{}
err = json.NewEncoder(b).Encode(staticLease)
require.NoError(t, err)
var r *http.Request
r, err = http.NewRequest(http.MethodPost, "", b)
require.NoError(t, err)
s.handleDHCPAddStaticLease(w, r)
assert.Equal(t, http.StatusOK, w.Code)
resp := defaultResponse()
resp.StaticLeases = []*leaseStatic{staticLease}
checkStatus(t, resp)
})
require.True(t, ok)
ok = t.Run("add_invalid_lease", func(t *testing.T) {
w := httptest.NewRecorder()
b := &bytes.Buffer{}
err = json.NewEncoder(b).Encode(&leaseStatic{})
require.NoError(t, err)
var r *http.Request
r, err = http.NewRequest(http.MethodPost, "", b)
require.NoError(t, err)
s.handleDHCPAddStaticLease(w, r)
assert.Equal(t, http.StatusBadRequest, w.Code)
})
require.True(t, ok)
ok = t.Run("remove_static_lease", func(t *testing.T) {
w := httptest.NewRecorder()
b := &bytes.Buffer{}
err = json.NewEncoder(b).Encode(staticLease)
require.NoError(t, err)
var r *http.Request
r, err = http.NewRequest(http.MethodPost, "", b)
require.NoError(t, err)
s.handleDHCPRemoveStaticLease(w, r)
assert.Equal(t, http.StatusOK, w.Code)
resp := defaultResponse()
checkStatus(t, resp)
})
require.True(t, ok)
ok = t.Run("set_config", func(t *testing.T) {
w := httptest.NewRecorder()
resp := defaultResponse()
resp.Enabled = false
b := &bytes.Buffer{}
err = json.NewEncoder(b).Encode(&resp)
require.NoError(t, err)
var r *http.Request
r, err = http.NewRequest(http.MethodPost, "", b)
require.NoError(t, err)
s.handleDHCPSetConfig(w, r)
assert.Equal(t, http.StatusOK, w.Code)
checkStatus(t, resp)
})
require.True(t, ok)
}

1
internal/dhcpd/http_windows.go
View File

@ -43,6 +43,7 @@ func (s *server) registerHandlers() {
s.conf.HTTPRegister(http.MethodPost, "/control/dhcp/find_active_dhcp", s.notImplemented)
s.conf.HTTPRegister(http.MethodPost, "/control/dhcp/add_static_lease", s.notImplemented)
s.conf.HTTPRegister(http.MethodPost, "/control/dhcp/remove_static_lease", s.notImplemented)
s.conf.HTTPRegister(http.MethodPost, "/control/dhcp/update_static_lease", s.notImplemented)
s.conf.HTTPRegister(http.MethodPost, "/control/dhcp/reset", s.notImplemented)
s.conf.HTTPRegister(http.MethodPost, "/control/dhcp/reset_leases", s.notImplemented)
}

1
internal/dhcpd/v46_windows.go
View File

@ -19,6 +19,7 @@ func (winServer) GetLeases(_ GetLeasesFlags) (leases []*Lease) { return nil }
func (winServer) getLeasesRef() []*Lease { return nil }
func (winServer) AddStaticLease(_ *Lease) (err error) { return nil }
func (winServer) RemoveStaticLease(_ *Lease) (err error) { return nil }
func (winServer) UpdateStaticLease(_ *Lease) (err error) { return nil }
func (winServer) FindMACbyIP(_ netip.Addr) (mac net.HardwareAddr) { return nil }
func (winServer) WriteDiskConfig4(_ *V4ServerConf) {}
func (winServer) WriteDiskConfig6(_ *V6ServerConf) {}

87
internal/dhcpd/v4_unix.go
View File

@ -309,9 +309,15 @@ func (s *v4Server) rmDynamicLease(lease *Lease) (err error) {
return nil
}
// ErrDupHostname is returned by addLease when the added lease has a not empty
// non-unique hostname.
const ErrDupHostname = errors.Error("hostname is not unique")
const (
// ErrDupHostname is returned by addLease, validateStaticLease when the
// modified lease has a not empty non-unique hostname.
ErrDupHostname = errors.Error("hostname is not unique")
// ErrDupIP is returned by addLease, validateStaticLease when the modified
// lease has a non-unique IP address.
ErrDupIP = errors.Error("ip address is not unique")
)
// addLease adds a dynamic or static lease.
func (s *v4Server) addLease(l *Lease) (err error) {
@ -428,6 +434,81 @@ func (s *v4Server) AddStaticLease(l *Lease) (err error) {
return nil
}
// UpdateStaticLease updates IP, hostname of the static lease.
func (s *v4Server) UpdateStaticLease(l *Lease) (err error) {
defer func() {
if err != nil {
err = errors.Annotate(err, "dhcpv4: updating static lease: %w")
return
}
s.conf.notify(LeaseChangedDBStore)
s.conf.notify(LeaseChangedRemovedStatic)
}()
s.leasesLock.Lock()
defer s.leasesLock.Unlock()
found := s.findLease(l.HWAddr)
if found == nil {
return fmt.Errorf("can't find lease %s", l.HWAddr)
}
err = s.validateStaticLease(l)
if err != nil {
return err
}
err = s.rmLease(found)
if err != nil {
return fmt.Errorf("removing previous lease for %s (%s): %w", l.IP, l.HWAddr, err)
}
err = s.addLease(l)
if err != nil {
return fmt.Errorf("adding updated static lease for %s (%s): %w", l.IP, l.HWAddr, err)
}
return nil
}
// validateStaticLease returns an error if the static lease is invalid.
func (s *v4Server) validateStaticLease(l *Lease) (err error) {
hostname, err := normalizeHostname(l.Hostname)
if err != nil {
// Don't wrap the error, because it's informative enough as is.
return err
}
err = netutil.ValidateHostname(hostname)
if err != nil {
return fmt.Errorf("validating hostname: %w", err)
}
dup, ok := s.hostsIndex[hostname]
if ok && !bytes.Equal(dup.HWAddr, l.HWAddr) {
return ErrDupHostname
}
dup, ok = s.ipIndex[l.IP]
if ok && !bytes.Equal(dup.HWAddr, l.HWAddr) {
return ErrDupIP
}
l.Hostname = hostname
if gwIP := s.conf.GatewayIP; gwIP == l.IP {
return fmt.Errorf("can't assign the gateway IP %q to the lease", gwIP)
}
if sn := s.conf.subnet; !sn.Contains(l.IP) {
return fmt.Errorf("subnet %s does not contain the ip %q", sn, l.IP)
}
return nil
}
// updateStaticLease safe removes dynamic lease with the same properties and
// then adds a static lease l.
func (s *v4Server) updateStaticLease(l *Lease) (err error) {

48
internal/dhcpd/v6_unix.go
View File

@ -235,6 +235,37 @@ func (s *v6Server) AddStaticLease(l *Lease) (err error) {
return nil
}
// UpdateStaticLease updates IP, hostname of the static lease.
func (s *v6Server) UpdateStaticLease(l *Lease) (err error) {
defer func() {
if err != nil {
err = errors.Annotate(err, "dhcpv6: updating static lease: %w")
return
}
s.conf.notify(LeaseChangedDBStore)
s.conf.notify(LeaseChangedRemovedStatic)
}()
s.leasesLock.Lock()
defer s.leasesLock.Unlock()
found := s.findLease(l.HWAddr)
if found == nil {
return fmt.Errorf("can't find lease %s", l.HWAddr)
}
err = s.rmLease(found)
if err != nil {
return fmt.Errorf("removing previous lease for %s (%s): %w", l.IP, l.HWAddr, err)
}
s.addLease(l)
return nil
}
// RemoveStaticLease removes a static lease. It is safe for concurrent use.
func (s *v6Server) RemoveStaticLease(l *Lease) (err error) {
defer func() { err = errors.Annotate(err, "dhcpv6: %w") }()
@ -286,16 +317,14 @@ func (s *v6Server) rmLease(lease *Lease) (err error) {
return fmt.Errorf("lease not found")
}
// Find lease by MAC
func (s *v6Server) findLease(mac net.HardwareAddr) *Lease {
s.leasesLock.Lock()
defer s.leasesLock.Unlock()
// Find lease by MAC.
func (s *v6Server) findLease(mac net.HardwareAddr) (lease *Lease) {
for i := range s.leases {
if bytes.Equal(mac, s.leases[i].HWAddr) {
return s.leases[i]
}
}
return nil
}
@ -477,7 +506,14 @@ func (s *v6Server) process(msg *dhcpv6.Message, req, resp dhcpv6.DHCPv6) bool {
return false
}
lease := s.findLease(mac)
var lease *Lease
func() {
s.leasesLock.Lock()
defer s.leasesLock.Unlock()
lease = s.findLease(mac)
}()
if lease == nil {
log.Debug("dhcpv6: no lease for: %s", mac)

6
openapi/CHANGELOG.md
View File

@ -6,6 +6,12 @@
## v0.107.39: API changes
### New HTTP API 'POST /control/dhcp/update_static_lease'
* The new `POST /control/dhcp/update_static_lease` HTTP API allows modifying IP
address, hostname of the static DHCP lease. IP version must be the same as
previous.
### The new field `"blocked_response_ttl"` in `DNSConfig` object
* The new field `"blocked_response_ttl"` in `GET /control/dns_info` and `POST

20
openapi/openapi.yaml
View File

@ -566,6 +566,26 @@
'schema':
'$ref': '#/components/schemas/Error'
'description': 'Not implemented (for example, on Windows).'
'/dhcp/update_static_lease':
'post':
'tags':
- 'dhcp'
'operationId': 'dhcpUpdateStaticLease'
'description': >
Updates IP address, hostname of the static lease. IP version must be
the same as previous.
'summary': 'Updates a static lease'
'requestBody':
'$ref': '#/components/requestBodies/DhcpStaticLease'
'responses':
'200':
'description': 'OK.'
'501':
'content':
'application/json':
'schema':
'$ref': '#/components/schemas/Error'
'description': 'Not implemented (for example, on Windows).'
'/dhcp/reset':
'post':
'tags':