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Pull request: 4698 Gateway IP in DHCP Lease
Closes #4698. Squashed commit of the following: commit 6be0caee58926f8cea1e10650fbde0c8d97d0dac Author: Ildar Kamalov <ik@adguard.com> Date: Fri Jul 8 13:41:50 2022 +0300 update translation commit e0370656d05e8463d73ea73568cae81187c6b2e3 Author: Ildar Kamalov <ik@adguard.com> Date: Fri Jul 8 13:40:54 2022 +0300 client: validate static lease ip commit 7f4d00f9f3a54dc93ce5d5c45e9c21745f6e39d1 Merge: 2ee7962677e5e27d
Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Fri Jul 8 13:20:15 2022 +0300 Merge branch 'master' into 4698-lease-with-gateway commit 2ee79626a1b0c7b113dbd22ba4ef6e85ea9913ec Merge: 471b96b83505ce87
Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Thu Jul 7 19:34:33 2022 +0300 Merge branch 'master' into 4698-lease-with-gateway commit 471b96b81da8920c1e71b7110050154f912677d2 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Thu Jul 7 16:07:23 2022 +0300 dhcpd: imp docs commit 67dd6c76f7d2df4712a57281e0f40f2ee1a1efa2 Author: Eugene Burkov <E.Burkov@AdGuard.COM> Date: Thu Jul 7 15:48:47 2022 +0300 dhcpd: restrict gateway ip for lease
This commit is contained in:
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77e5e27d75
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@ -32,6 +32,8 @@ and this project adheres to
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### Fixed
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- DHCP lease validation incorrectly letting users assign the IP address of the
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gateway as the address of the lease ([#4698]).
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- Updater no longer expects a hardcoded name for `AdGuardHome` executable
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([#4219]).
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- Inconsistent names of runtime clients from hosts files ([#4683]).
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@ -44,6 +46,7 @@ and this project adheres to
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[#4219]: https://github.com/AdguardTeam/AdGuardHome/issues/4219
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[#4677]: https://github.com/AdguardTeam/AdGuardHome/issues/4677
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[#4683]: https://github.com/AdguardTeam/AdGuardHome/issues/4683
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[#4698]: https://github.com/AdguardTeam/AdGuardHome/issues/4698
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[#4699]: https://github.com/AdguardTeam/AdGuardHome/issues/4699
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[ddr-draft]: https://datatracker.ietf.org/doc/html/draft-ietf-add-ddr-08
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@ -47,6 +47,7 @@
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"form_error_server_name": "Invalid server name",
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"form_error_subnet": "Subnet \"{{cidr}}\" does not contain the IP address \"{{ip}}\"",
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"form_error_positive": "Must be greater than 0",
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"form_error_gateway_ip": "Lease can't have the IP address of the gateway",
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"out_of_range_error": "Must be out of range \"{{start}}\"-\"{{end}}\"",
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"lower_range_start_error": "Must be lower than range start",
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"greater_range_start_error": "Must be greater than range start",
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@ -10,6 +10,7 @@ import {
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validateMac,
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validateRequiredValue,
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validateIpv4InCidr,
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validateIpGateway,
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} from '../../../../helpers/validators';
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import { FORM_NAME } from '../../../../helpers/constants';
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import { toggleLeaseModal } from '../../../../actions';
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@ -57,6 +58,7 @@ const Form = ({
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validateRequiredValue,
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validateIpv4,
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validateIpv4InCidr,
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validateIpGateway,
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]}
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/>
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</div>
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@ -101,6 +103,7 @@ Form.propTypes = {
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ip: PropTypes.string.isRequired,
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hostname: PropTypes.string.isRequired,
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cidr: PropTypes.string.isRequired,
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gatewayIp: PropTypes.string,
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}),
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pristine: PropTypes.bool.isRequired,
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handleSubmit: PropTypes.func.isRequired,
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@ -13,6 +13,7 @@ const Modal = ({
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cidr,
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rangeStart,
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rangeEnd,
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gatewayIp,
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}) => {
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const dispatch = useDispatch();
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@ -42,6 +43,7 @@ const Modal = ({
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cidr,
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rangeStart,
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rangeEnd,
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gatewayIp,
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}}
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onSubmit={handleSubmit}
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processingAdding={processingAdding}
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@ -61,6 +63,7 @@ Modal.propTypes = {
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cidr: PropTypes.string.isRequired,
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rangeStart: PropTypes.string,
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rangeEnd: PropTypes.string,
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gatewayIp: PropTypes.string,
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};
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export default withTranslation()(Modal);
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@ -24,6 +24,7 @@ const StaticLeases = ({
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cidr,
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rangeStart,
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rangeEnd,
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gatewayIp,
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}) => {
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const [t] = useTranslation();
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const dispatch = useDispatch();
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@ -106,6 +107,7 @@ const StaticLeases = ({
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cidr={cidr}
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rangeStart={rangeStart}
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rangeEnd={rangeEnd}
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gatewayIp={gatewayIp}
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/>
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</>
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);
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@ -119,6 +121,7 @@ StaticLeases.propTypes = {
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cidr: PropTypes.string.isRequired,
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rangeStart: PropTypes.string,
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rangeEnd: PropTypes.string,
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gatewayIp: PropTypes.string,
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};
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cellWrap.propTypes = {
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@ -278,6 +278,7 @@ const Dhcp = () => {
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cidr={cidr}
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rangeStart={dhcp?.values?.v4?.range_start}
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rangeEnd={dhcp?.values?.v4?.range_end}
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gatewayIp={dhcp?.values?.v4?.gateway_ip}
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/>
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<div className="btn-list mt-2">
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<button
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@ -339,3 +339,14 @@ export const validatePasswordLength = (value) => {
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}
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return undefined;
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};
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/**
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* @param value {string}
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* @returns {Function}
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*/
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export const validateIpGateway = (value, allValues) => {
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if (value === allValues.gatewayIp) {
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return i18next.t('form_error_gateway_ip');
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}
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return undefined;
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};
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@ -498,7 +498,6 @@ func (s *Server) handleDHCPAddStaticLease(w http.ResponseWriter, r *http.Request
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}
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ip4 := l.IP.To4()
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if ip4 == nil {
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l.IP = l.IP.To16()
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@ -333,12 +333,16 @@ func (s *v4Server) rmLease(lease *Lease) (err error) {
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return errors.Error("lease not found")
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}
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// AddStaticLease adds a static lease. It is safe for concurrent use.
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// AddStaticLease implements the DHCPServer interface for *v4Server. It is safe
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// for concurrent use.
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func (s *v4Server) AddStaticLease(l *Lease) (err error) {
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defer func() { err = errors.Annotate(err, "dhcpv4: adding static lease: %w") }()
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if ip4 := l.IP.To4(); ip4 == nil {
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ip := l.IP.To4()
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if ip == nil {
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return fmt.Errorf("invalid ip %q, only ipv4 is supported", l.IP)
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} else if gwIP := s.conf.GatewayIP; gwIP.Equal(ip) {
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return fmt.Errorf("can't assign the gateway IP %s to the lease", gwIP)
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}
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l.Expiry = time.Unix(leaseExpireStatic, 0)
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@ -377,7 +381,7 @@ func (s *v4Server) AddStaticLease(l *Lease) (err error) {
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if err != nil {
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err = fmt.Errorf(
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"removing dynamic leases for %s (%s): %w",
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l.IP,
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ip,
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l.HWAddr,
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err,
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)
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@ -387,7 +391,7 @@ func (s *v4Server) AddStaticLease(l *Lease) (err error) {
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err = s.addLease(l)
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if err != nil {
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err = fmt.Errorf("adding static lease for %s (%s): %w", l.IP, l.HWAddr, err)
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err = fmt.Errorf("adding static lease for %s (%s): %w", ip, l.HWAddr, err)
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return
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}
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@ -4,6 +4,7 @@
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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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@ -16,6 +17,13 @@ import (
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"github.com/stretchr/testify/require"
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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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DefaultSubnetMask = net.IP{255, 255, 255, 0}
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)
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func notify4(flags uint32) {
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}
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@ -24,10 +32,10 @@ func notify4(flags uint32) {
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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: net.IP{192, 168, 10, 100},
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RangeEnd: net.IP{192, 168, 10, 200},
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GatewayIP: net.IP{192, 168, 10, 1},
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SubnetMask: net.IP{255, 255, 255, 0},
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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: notify4,
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}
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}
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@ -44,44 +52,86 @@ func defaultSrv(t *testing.T) (s DHCPServer) {
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return s
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}
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func TestV4_AddRemove_static(t *testing.T) {
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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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assert.Empty(t, ls)
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require.Empty(t, ls)
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// Add static lease.
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l := &Lease{
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Hostname: "static-1.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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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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err := s.AddStaticLease(l)
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require.NoError(t, err)
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err = s.AddStaticLease(l)
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assert.Error(t, err)
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ls = s.GetLeases(LeasesStatic)
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require.Len(t, ls, 1)
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assert.True(t, l.IP.Equal(ls[0].IP))
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assert.Equal(t, l.HWAddr, ls[0].HWAddr)
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assert.True(t, ls[0].IsStatic())
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// Try to remove static lease.
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err = s.RemoveStaticLease(&Lease{
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IP: net.IP{192, 168, 10, 110},
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HWAddr: net.HardwareAddr{0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA},
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})
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assert.Error(t, err)
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// Remove static lease.
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err = s.RemoveStaticLease(l)
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require.NoError(t, err)
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ls = s.GetLeases(LeasesStatic)
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assert.Empty(t, ls)
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}
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func TestV4_AddReplace(t *testing.T) {
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