modules/luci-mod-network/htdocs/luci-static/resources/view/network/dhcp.js

   1 'use strict';
   2 'require view';
   3 'require dom';
   4 'require poll';
   5 'require rpc';
   6 'require uci';
   7 'require form';
   8 'require validation';
   9
  10 var callHostHints, callDUIDHints, callDHCPLeases, CBILeaseStatus, CBILease6Status;
  11
  12 callHostHints = rpc.declare({
  13         object: 'luci-rpc',
  14         method: 'getHostHints',
  15         expect: { '': {} }
  16 });
  17
  18 callDUIDHints = rpc.declare({
  19         object: 'luci-rpc',
  20         method: 'getDUIDHints',
  21         expect: { '': {} }
  22 });
  23
  24 callDHCPLeases = rpc.declare({
  25         object: 'luci-rpc',
  26         method: 'getDHCPLeases',
  27         expect: { '': {} }
  28 });
  29
  30 CBILeaseStatus = form.DummyValue.extend({
  31         renderWidget: function(section_id, option_id, cfgvalue) {
  32                 return E([
  33                         E('h4', _('Active DHCP Leases')),
  34                         E('div', { 'id': 'lease_status_table', 'class': 'table' }, [
  35                                 E('div', { 'class': 'tr table-titles' }, [
  36                                         E('div', { 'class': 'th' }, _('Hostname')),
  37                                         E('div', { 'class': 'th' }, _('IPv4-Address')),
  38                                         E('div', { 'class': 'th' }, _('MAC-Address')),
  39                                         E('div', { 'class': 'th' }, _('Lease time remaining'))
  40                                 ]),
  41                                 E('div', { 'class': 'tr placeholder' }, [
  42                                         E('div', { 'class': 'td' }, E('em', _('Collecting data...')))
  43                                 ])
  44                         ])
  45                 ]);
  46         }
  47 });
  48
  49 CBILease6Status = form.DummyValue.extend({
  50         renderWidget: function(section_id, option_id, cfgvalue) {
  51                 return E([
  52                         E('h4', _('Active DHCPv6 Leases')),
  53                         E('div', { 'id': 'lease6_status_table', 'class': 'table' }, [
  54                                 E('div', { 'class': 'tr table-titles' }, [
  55                                         E('div', { 'class': 'th' }, _('Host')),
  56                                         E('div', { 'class': 'th' }, _('IPv6-Address')),
  57                                         E('div', { 'class': 'th' }, _('DUID')),
  58                                         E('div', { 'class': 'th' }, _('Leasetime remaining'))
  59                                 ]),
  60                                 E('div', { 'class': 'tr placeholder' }, [
  61                                         E('div', { 'class': 'td' }, E('em', _('Collecting data...')))
  62                                 ])
  63                         ])
  64                 ]);
  65         }
  66 });
  67
  68 function validateHostname(sid, s) {
  69         if (s.length > 256)
  70                 return _('Expecting: %s').format(_('valid hostname'));
  71
  72         var labels = s.replace(/^\.+|\.$/g, '').split(/\./);
  73
  74         for (var i = 0; i < labels.length; i++)
  75                 if (!labels[i].match(/^[a-z0-9_](?:[a-z0-9-]{0,61}[a-z0-9])?$/i))
  76                         return _('Expecting: %s').format(_('valid hostname'));
  77
  78         return true;
  79 }
  80
  81 function validateAddressList(sid, s) {
  82         if (s == null || s == '')
  83                 return true;
  84
  85         var m = s.match(/^\/(.+)\/$/),
  86             names = m ? m[1].split(/\//) : [ s ];
  87
  88         for (var i = 0; i < names.length; i++) {
  89                 var res = validateHostname(sid, names[i]);
  90
  91                 if (res !== true)
  92                         return res;
  93         }
  94
  95         return true;
  96 }
  97
  98 function validateServerSpec(sid, s) {
  99         if (s == null || s == '')
 100                 return true;
 101
 102         var m = s.match(/^(?:\/(.+)\/)?(.*)$/);
 103         if (!m)
 104                 return _('Expecting: %s').format(_('valid hostname'));
 105
 106         var res = validateAddressList(sid, m[1]);
 107         if (res !== true)
 108                 return res;
 109
 110         if (m[2] == '' || m[2] == '#')
 111                 return true;
 112
 113         // ipaddr%scopeid#srvport@source@interface#srcport
 114
 115         m = m[2].match(/^([0-9a-f:.]+)(?:%[^#@]+)?(?:#(\d+))?(?:@([0-9a-f:.]+)(?:@[^#]+)?(?:#(\d+))?)?$/);
 116
 117         if (!m)
 118                 return _('Expecting: %s').format(_('valid IP address'));
 119
 120         if (validation.parseIPv4(m[1])) {
 121                 if (m[3] != null && !validation.parseIPv4(m[3]))
 122                         return _('Expecting: %s').format(_('valid IPv4 address'));
 123         }
 124         else if (validation.parseIPv6(m[1])) {
 125                 if (m[3] != null && !validation.parseIPv6(m[3]))
 126                         return _('Expecting: %s').format(_('valid IPv6 address'));
 127         }
 128         else {
 129                 return _('Expecting: %s').format(_('valid IP address'));
 130         }
 131
 132         if ((m[2] != null && +m[2] > 65535) || (m[4] != null && +m[4] > 65535))
 133                 return _('Expecting: %s').format(_('valid port value'));
 134
 135         return true;
 136 }
 137
 138 return view.extend({
 139         load: function() {
 140                 return Promise.all([
 141                         callHostHints(),
 142                         callDUIDHints()
 143                 ]);
 144         },
 145
 146         render: function(hosts_duids) {
 147                 var has_dhcpv6 = L.hasSystemFeature('dnsmasq', 'dhcpv6') || L.hasSystemFeature('odhcpd'),
 148                     hosts = hosts_duids[0],
 149                     duids = hosts_duids[1],
 150                     m, s, o, ss, so;
 151
 152                 m = new form.Map('dhcp', _('DHCP and DNS'), _('Dnsmasq is a combined <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr>-Server and <abbr title="Domain Name System">DNS</abbr>-Forwarder for <abbr title="Network Address Translation">NAT</abbr> firewalls'));
 153
 154                 s = m.section(form.TypedSection, 'dnsmasq', _('Server Settings'));
 155                 s.anonymous = true;
 156                 s.addremove = false;
 157
 158                 s.tab('general', _('General Settings'));
 159                 s.tab('files', _('Resolv and Hosts Files'));
 160                 s.tab('tftp', _('TFTP Settings'));
 161                 s.tab('advanced', _('Advanced Settings'));
 162                 s.tab('leases', _('Static Leases'));
 163
 164                 s.taboption('general', form.Flag, 'domainneeded',
 165                         _('Domain required'),
 166                         _('Don\'t forward <abbr title="Domain Name System">DNS</abbr>-Requests without <abbr title="Domain Name System">DNS</abbr>-Name'));
 167
 168                 s.taboption('general', form.Flag, 'authoritative',
 169                         _('Authoritative'),
 170                         _('This is the only <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr> in the local network'));
 171
 172
 173                 s.taboption('files', form.Flag, 'readethers',
 174                         _('Use <code>/etc/ethers</code>'),
 175                         _('Read <code>/etc/ethers</code> to configure the <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr>-Server'));
 176
 177                 s.taboption('files', form.Value, 'leasefile',
 178                         _('Leasefile'),
 179                         _('file where given <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr>-leases will be stored'));
 180
 181                 s.taboption('files', form.Flag, 'noresolv',
 182                         _('Ignore resolve file')).optional = true;
 183
 184                 o = s.taboption('files', form.Value, 'resolvfile',
 185                         _('Resolve file'),
 186                         _('local <abbr title="Domain Name System">DNS</abbr> file'));
 187
 188                 o.depends('noresolv', '0');
 189                 o.placeholder = '/tmp/resolv.conf.auto';
 190                 o.optional = true;
 191
 192
 193                 s.taboption('files', form.Flag, 'nohosts',
 194                         _('Ignore <code>/etc/hosts</code>')).optional = true;
 195
 196                 s.taboption('files', form.DynamicList, 'addnhosts',
 197                         _('Additional Hosts files')).optional = true;
 198
 199                 o = s.taboption('advanced', form.Flag, 'quietdhcp',
 200                         _('Suppress logging'),
 201                         _('Suppress logging of the routine operation of these protocols'));
 202                 o.optional = true;
 203
 204                 o = s.taboption('advanced', form.Flag, 'sequential_ip',
 205                         _('Allocate IP sequentially'),
 206                         _('Allocate IP addresses sequentially, starting from the lowest available address'));
 207                 o.optional = true;
 208
 209                 o = s.taboption('advanced', form.Flag, 'boguspriv',
 210                         _('Filter private'),
 211                         _('Do not forward reverse lookups for local networks'));
 212                 o.default = o.enabled;
 213
 214                 s.taboption('advanced', form.Flag, 'filterwin2k',
 215                         _('Filter useless'),
 216                         _('Do not forward requests that cannot be answered by public name servers'));
 217
 218
 219                 s.taboption('advanced', form.Flag, 'localise_queries',
 220                         _('Localise queries'),
 221                         _('Localise hostname depending on the requesting subnet if multiple IPs are available'));
 222
 223                 if (L.hasSystemFeature('dnsmasq', 'dnssec')) {
 224                         o = s.taboption('advanced', form.Flag, 'dnssec',
 225                                 _('DNSSEC'));
 226                         o.optional = true;
 227
 228                         o = s.taboption('advanced', form.Flag, 'dnsseccheckunsigned',
 229                                 _('DNSSEC check unsigned'),
 230                                 _('Requires upstream supports DNSSEC; verify unsigned domain responses really come from unsigned domains'));
 231                         o.default = o.enabled;
 232                         o.optional = true;
 233                 }
 234
 235                 s.taboption('general', form.Value, 'local',
 236                         _('Local server'),
 237                         _('Local domain specification. Names matching this domain are never forwarded and are resolved from DHCP or hosts files only'));
 238
 239                 s.taboption('general', form.Value, 'domain',
 240                         _('Local domain'),
 241                         _('Local domain suffix appended to DHCP names and hosts file entries'));
 242
 243                 s.taboption('advanced', form.Flag, 'expandhosts',
 244                         _('Expand hosts'),
 245                         _('Add local domain suffix to names served from hosts files'));
 246
 247                 s.taboption('advanced', form.Flag, 'nonegcache',
 248                         _('No negative cache'),
 249                         _('Do not cache negative replies, e.g. for not existing domains'));
 250
 251                 s.taboption('advanced', form.Value, 'serversfile',
 252                         _('Additional servers file'),
 253                         _('This file may contain lines like \'server=/domain/1.2.3.4\' or \'server=1.2.3.4\' for domain-specific or full upstream <abbr title="Domain Name System">DNS</abbr> servers.'));
 254
 255                 s.taboption('advanced', form.Flag, 'strictorder',
 256                         _('Strict order'),
 257                         _('<abbr title="Domain Name System">DNS</abbr> servers will be queried in the order of the resolvfile')).optional = true;
 258
 259                 s.taboption('advanced', form.Flag, 'allservers',
 260                         _('All Servers'),
 261                         _('Query all available upstream <abbr title="Domain Name System">DNS</abbr> servers')).optional = true;
 262
 263                 o = s.taboption('advanced', form.DynamicList, 'bogusnxdomain', _('Bogus NX Domain Override'),
 264                         _('List of hosts that supply bogus NX domain results'));
 265
 266                 o.optional = true;
 267                 o.placeholder = '67.215.65.132';
 268
 269
 270                 s.taboption('general', form.Flag, 'logqueries',
 271                         _('Log queries'),
 272                         _('Write received DNS requests to syslog')).optional = true;
 273
 274                 o = s.taboption('general', form.DynamicList, 'server', _('DNS forwardings'),
 275                         _('List of <abbr title="Domain Name System">DNS</abbr> servers to forward requests to'));
 276
 277                 o.optional = true;
 278                 o.placeholder = '/example.org/10.1.2.3';
 279                 o.validate = validateServerSpec;
 280
 281
 282                 o = s.taboption('general', form.Flag, 'rebind_protection',
 283                         _('Rebind protection'),
 284                         _('Discard upstream RFC1918 responses'));
 285
 286                 o.rmempty = false;
 287
 288
 289                 o = s.taboption('general', form.Flag, 'rebind_localhost',
 290                         _('Allow localhost'),
 291                         _('Allow upstream responses in the 127.0.0.0/8 range, e.g. for RBL services'));
 292
 293                 o.depends('rebind_protection', '1');
 294
 295
 296                 o = s.taboption('general', form.DynamicList, 'rebind_domain',
 297                         _('Domain whitelist'),
 298                         _('List of domains to allow RFC1918 responses for'));
 299                 o.optional = true;
 300
 301                 o.depends('rebind_protection', '1');
 302                 o.placeholder = 'ihost.netflix.com';
 303                 o.validate = validateAddressList;
 304
 305
 306                 o = s.taboption('advanced', form.Value, 'port',
 307                         _('<abbr title="Domain Name System">DNS</abbr> server port'),
 308                         _('Listening port for inbound DNS queries'));
 309
 310                 o.optional = true;
 311                 o.datatype = 'port';
 312                 o.placeholder = 53;
 313
 314
 315                 o = s.taboption('advanced', form.Value, 'queryport',
 316                         _('<abbr title="Domain Name System">DNS</abbr> query port'),
 317                         _('Fixed source port for outbound DNS queries'));
 318
 319                 o.optional = true;
 320                 o.datatype = 'port';
 321                 o.placeholder = _('any');
 322
 323
 324                 o = s.taboption('advanced', form.Value, 'dhcpleasemax',
 325                         _('<abbr title="maximal">Max.</abbr> <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr> leases'),
 326                         _('Maximum allowed number of active DHCP leases'));
 327
 328                 o.optional = true;
 329                 o.datatype = 'uinteger';
 330                 o.placeholder = _('unlimited');
 331
 332
 333                 o = s.taboption('advanced', form.Value, 'ednspacket_max',
 334                         _('<abbr title="maximal">Max.</abbr> <abbr title="Extension Mechanisms for Domain Name System">EDNS0</abbr> packet size'),
 335                         _('Maximum allowed size of EDNS.0 UDP packets'));
 336
 337                 o.optional = true;
 338                 o.datatype = 'uinteger';
 339                 o.placeholder = 1280;
 340
 341
 342                 o = s.taboption('advanced', form.Value, 'dnsforwardmax',
 343                         _('<abbr title="maximal">Max.</abbr> concurrent queries'),
 344                         _('Maximum allowed number of concurrent DNS queries'));
 345
 346                 o.optional = true;
 347                 o.datatype = 'uinteger';
 348                 o.placeholder = 150;
 349
 350                 o = s.taboption('advanced', form.Value, 'cachesize',
 351                         _('Size of DNS query cache'),
 352                         _('Number of cached DNS entries (max is 10000, 0 is no caching)'));
 353                 o.optional = true;
 354                 o.datatype = 'range(0,10000)';
 355                 o.placeholder = 150;
 356
 357                 s.taboption('tftp', form.Flag, 'enable_tftp',
 358                         _('Enable TFTP server')).optional = true;
 359
 360                 o = s.taboption('tftp', form.Value, 'tftp_root',
 361                         _('TFTP server root'),
 362                         _('Root directory for files served via TFTP'));
 363
 364                 o.optional = true;
 365                 o.depends('enable_tftp', '1');
 366                 o.placeholder = '/';
 367
 368
 369                 o = s.taboption('tftp', form.Value, 'dhcp_boot',
 370                         _('Network boot image'),
 371                         _('Filename of the boot image advertised to clients'));
 372
 373                 o.optional = true;
 374                 o.depends('enable_tftp', '1');
 375                 o.placeholder = 'pxelinux.0';
 376
 377                 o = s.taboption('general', form.Flag, 'localservice',
 378                         _('Local Service Only'),
 379                         _('Limit DNS service to subnets interfaces on which we are serving DNS.'));
 380                 o.optional = false;
 381                 o.rmempty = false;
 382
 383                 o = s.taboption('general', form.Flag, 'nonwildcard',
 384                         _('Non-wildcard'),
 385                         _('Bind dynamically to interfaces rather than wildcard address (recommended as linux default)'));
 386                 o.default = o.enabled;
 387                 o.optional = false;
 388                 o.rmempty = true;
 389
 390                 o = s.taboption('general', form.DynamicList, 'interface',
 391                         _('Listen Interfaces'),
 392                         _('Limit listening to these interfaces, and loopback.'));
 393                 o.optional = true;
 394
 395                 o = s.taboption('general', form.DynamicList, 'notinterface',
 396                         _('Exclude interfaces'),
 397                         _('Prevent listening on these interfaces.'));
 398                 o.optional = true;
 399
 400                 o = s.taboption('leases', form.SectionValue, '__leases__', form.GridSection, 'host', null,
 401                         _('Static leases are used to assign fixed IP addresses and symbolic hostnames to DHCP clients. They are also required for non-dynamic interface configurations where only hosts with a corresponding lease are served.') + '<br />' +
 402                         _('Use the <em>Add</em> Button to add a new lease entry. The <em>MAC-Address</em> identifies the host, the <em>IPv4-Address</em> specifies the fixed address to use, and the <em>Hostname</em> is assigned as a symbolic name to the requesting host. The optional <em>Lease time</em> can be used to set non-standard host-specific lease time, e.g. 12h, 3d or infinite.'));
 403
 404                 ss = o.subsection;
 405
 406                 ss.addremove = true;
 407                 ss.anonymous = true;
 408
 409                 so = ss.option(form.Value, 'name', _('Hostname'));
 410                 so.validate = validateHostname;
 411                 so.rmempty  = true;
 412                 so.write = function(section, value) {
 413                         uci.set('dhcp', section, 'name', value);
 414                         uci.set('dhcp', section, 'dns', '1');
 415                 };
 416                 so.remove = function(section) {
 417                         uci.unset('dhcp', section, 'name');
 418                         uci.unset('dhcp', section, 'dns');
 419                 };
 420
 421                 so = ss.option(form.Value, 'mac', _('<abbr title="Media Access Control">MAC</abbr>-Address'));
 422                 so.datatype = 'list(unique(macaddr))';
 423                 so.rmempty  = true;
 424                 so.cfgvalue = function(section) {
 425                         var macs = uci.get('dhcp', section, 'mac'),
 426                             result = [];
 427
 428                         if (!Array.isArray(macs))
 429                                 macs = (macs != null && macs != '') ? macs.split(/\ss+/) : [];
 430
 431                         for (var i = 0, mac; (mac = macs[i]) != null; i++)
 432                                 if (/^([0-9a-fA-F]{1,2}):([0-9a-fA-F]{1,2}):([0-9a-fA-F]{1,2}):([0-9a-fA-F]{1,2}):([0-9a-fA-F]{1,2}):([0-9a-fA-F]{1,2})$/.test(mac))
 433                                         result.push('%02X:%02X:%02X:%02X:%02X:%02X'.format(
 434                                                 parseInt(RegExp.$1, 16), parseInt(RegExp.$2, 16),
 435                                                 parseInt(RegExp.$3, 16), parseInt(RegExp.$4, 16),
 436                                                 parseInt(RegExp.$5, 16), parseInt(RegExp.$6, 16)));
 437
 438                         return result.length ? result.join(' ') : null;
 439                 };
 440                 so.renderWidget = function(section_id, option_index, cfgvalue) {
 441                         var node = form.Value.prototype.renderWidget.apply(this, [section_id, option_index, cfgvalue]),
 442                             ipopt = this.section.children.filter(function(o) { return o.option == 'ip' })[0];
 443
 444                         node.addEventListener('cbi-dropdown-change', L.bind(function(ipopt, section_id, ev) {
 445                                 var mac = ev.detail.value.value;
 446                                 if (mac == null || mac == '' || !hosts[mac] || !hosts[mac].ipv4)
 447                                         return;
 448
 449                                 var ip = ipopt.formvalue(section_id);
 450                                 if (ip != null && ip != '')
 451                                         return;
 452
 453                                 var node = ipopt.map.findElement('id', ipopt.cbid(section_id));
 454                                 if (node)
 455                                         dom.callClassMethod(node, 'setValue', hosts[mac].ipv4);
 456                         }, this, ipopt, section_id));
 457
 458                         return node;
 459                 };
 460                 Object.keys(hosts).forEach(function(mac) {
 461                         var hint = hosts[mac].name || hosts[mac].ipv4;
 462                         so.value(mac, hint ? '%s (%s)'.format(mac, hint) : mac);
 463                 });
 464
 465                 so = ss.option(form.Value, 'ip', _('<abbr title="Internet Protocol Version 4">IPv4</abbr>-Address'));
 466                 so.datatype = 'or(ip4addr,"ignore")';
 467                 so.validate = function(section, value) {
 468                         var mac = this.map.lookupOption('mac', section),
 469                             name = this.map.lookupOption('name', section),
 470                             m = mac ? mac[0].formvalue(section) : null,
 471                             n = name ? name[0].formvalue(section) : null;
 472
 473                         if ((m == null || m == '') && (n == null || n == ''))
 474                                 return _('One of hostname or mac address must be specified!');
 475
 476                         return true;
 477                 };
 478                 Object.keys(hosts).forEach(function(mac) {
 479                         if (hosts[mac].ipv4) {
 480                                 var hint = hosts[mac].name;
 481                                 so.value(hosts[mac].ipv4, hint ? '%s (%s)'.format(hosts[mac].ipv4, hint) : hosts[mac].ipv4);
 482                         }
 483                 });
 484
 485                 so = ss.option(form.Value, 'leasetime', _('Lease time'));
 486                 so.rmempty = true;
 487
 488                 so = ss.option(form.Value, 'duid', _('<abbr title="The DHCP Unique Identifier">DUID</abbr>'));
 489                 so.datatype = 'and(rangelength(20,36),hexstring)';
 490                 Object.keys(duids).forEach(function(duid) {
 491                         so.value(duid, '%s (%s)'.format(duid, duids[duid].hostname || duids[duid].macaddr || duids[duid].ip6addr || '?'));
 492                 });
 493
 494                 so = ss.option(form.Value, 'hostid', _('<abbr title="Internet Protocol Version 6">IPv6</abbr>-Suffix (hex)'));
 495
 496                 o = s.taboption('leases', CBILeaseStatus, '__status__');
 497
 498                 if (has_dhcpv6)
 499                         o = s.taboption('leases', CBILease6Status, '__status6__');
 500
 501                 return m.render().then(function(mapEl) {
 502                         poll.add(function() {
 503                                 return callDHCPLeases().then(function(leaseinfo) {
 504                                         var leases = Array.isArray(leaseinfo.dhcp_leases) ? leaseinfo.dhcp_leases : [],
 505                                             leases6 = Array.isArray(leaseinfo.dhcp6_leases) ? leaseinfo.dhcp6_leases : [];
 506
 507                                         cbi_update_table(mapEl.querySelector('#lease_status_table'),
 508                                                 leases.map(function(lease) {
 509                                                         var exp;
 510
 511                                                         if (lease.expires === false)
 512                                                                 exp = E('em', _('unlimited'));
 513                                                         else if (lease.expires <= 0)
 514                                                                 exp = E('em', _('expired'));
 515                                                         else
 516                                                                 exp = '%t'.format(lease.expires);
 517
 518                                                         return [
 519                                                                 lease.hostname || '?',
 520                                                                 lease.ipaddr,
 521                                                                 lease.macaddr,
 522                                                                 exp
 523                                                         ];
 524                                                 }),
 525                                                 E('em', _('There are no active leases')));
 526
 527                                         if (has_dhcpv6) {
 528                                                 cbi_update_table(mapEl.querySelector('#lease6_status_table'),
 529                                                         leases6.map(function(lease) {
 530                                                                 var exp;
 531
 532                                                                 if (lease.expires === false)
 533                                                                         exp = E('em', _('unlimited'));
 534                                                                 else if (lease.expires <= 0)
 535                                                                         exp = E('em', _('expired'));
 536                                                                 else
 537                                                                         exp = '%t'.format(lease.expires);
 538
 539                                                                 var hint = lease.macaddr ? hosts[lease.macaddr] : null,
 540                                                                     name = hint ? (hint.name || hint.ipv4 || hint.ipv6) : null,
 541                                                                     host = null;
 542
 543                                                                 if (name && lease.hostname && lease.hostname != name && lease.ip6addr != name)
 544                                                                         host = '%s (%s)'.format(lease.hostname, name);
 545                                                                 else if (lease.hostname)
 546                                                                         host = lease.hostname;
 547                                                                 else if (name)
 548                                                                         host = name;
 549
 550                                                                 return [
 551                                                                         host || '-',
 552                                                                         lease.ip6addrs ? lease.ip6addrs.join(' ') : lease.ip6addr,
 553                                                                         lease.duid,
 554                                                                         exp
 555                                                                 ];
 556                                                         }),
 557                                                         E('em', _('There are no active leases')));
 558                                         }
 559                                 });
 560                         });
 561
 562                         return mapEl;
 563                 });
 564         }
 565 });