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 == null || s == '')
  70                 return true;
  71
  72         if (s.length > 256)
  73                 return _('Expecting: %s').format(_('valid hostname'));
  74
  75         var labels = s.replace(/^\.+|\.$/g, '').split(/\./);
  76
  77         for (var i = 0; i < labels.length; i++)
  78                 if (!labels[i].match(/^[a-z0-9_](?:[a-z0-9-]{0,61}[a-z0-9])?$/i))
  79                         return _('Expecting: %s').format(_('valid hostname'));
  80
  81         return true;
  82 }
  83
  84 function validateAddressList(sid, s) {
  85         if (s == null || s == '')
  86                 return true;
  87
  88         var m = s.match(/^\/(.+)\/$/),
  89             names = m ? m[1].split(/\//) : [ s ];
  90
  91         for (var i = 0; i < names.length; i++) {
  92                 var res = validateHostname(sid, names[i]);
  93
  94                 if (res !== true)
  95                         return res;
  96         }
  97
  98         return true;
  99 }
 100
 101 function validateServerSpec(sid, s) {
 102         if (s == null || s == '')
 103                 return true;
 104
 105         var m = s.match(/^(?:\/(.+)\/)?(.*)$/);
 106         if (!m)
 107                 return _('Expecting: %s').format(_('valid hostname'));
 108
 109         var res = validateAddressList(sid, m[1]);
 110         if (res !== true)
 111                 return res;
 112
 113         if (m[2] == '' || m[2] == '#')
 114                 return true;
 115
 116         // ipaddr%scopeid#srvport@source@interface#srcport
 117
 118         m = m[2].match(/^([0-9a-f:.]+)(?:%[^#@]+)?(?:#(\d+))?(?:@([0-9a-f:.]+)(?:@[^#]+)?(?:#(\d+))?)?$/);
 119
 120         if (!m)
 121                 return _('Expecting: %s').format(_('valid IP address'));
 122
 123         if (validation.parseIPv4(m[1])) {
 124                 if (m[3] != null && !validation.parseIPv4(m[3]))
 125                         return _('Expecting: %s').format(_('valid IPv4 address'));
 126         }
 127         else if (validation.parseIPv6(m[1])) {
 128                 if (m[3] != null && !validation.parseIPv6(m[3]))
 129                         return _('Expecting: %s').format(_('valid IPv6 address'));
 130         }
 131         else {
 132                 return _('Expecting: %s').format(_('valid IP address'));
 133         }
 134
 135         if ((m[2] != null && +m[2] > 65535) || (m[4] != null && +m[4] > 65535))
 136                 return _('Expecting: %s').format(_('valid port value'));
 137
 138         return true;
 139 }
 140
 141 return view.extend({
 142         load: function() {
 143                 return Promise.all([
 144                         callHostHints(),
 145                         callDUIDHints()
 146                 ]);
 147         },
 148
 149         render: function(hosts_duids) {
 150                 var has_dhcpv6 = L.hasSystemFeature('dnsmasq', 'dhcpv6') || L.hasSystemFeature('odhcpd'),
 151                     hosts = hosts_duids[0],
 152                     duids = hosts_duids[1],
 153                     m, s, o, ss, so;
 154
 155                 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'));
 156
 157                 s = m.section(form.TypedSection, 'dnsmasq', _('Server Settings'));
 158                 s.anonymous = true;
 159                 s.addremove = false;
 160
 161                 s.tab('general', _('General Settings'));
 162                 s.tab('files', _('Resolv and Hosts Files'));
 163                 s.tab('tftp', _('TFTP Settings'));
 164                 s.tab('advanced', _('Advanced Settings'));
 165                 s.tab('leases', _('Static Leases'));
 166
 167                 s.taboption('general', form.Flag, 'domainneeded',
 168                         _('Domain required'),
 169                         _('Don\'t forward <abbr title="Domain Name System">DNS</abbr>-Requests without <abbr title="Domain Name System">DNS</abbr>-Name'));
 170
 171                 s.taboption('general', form.Flag, 'authoritative',
 172                         _('Authoritative'),
 173                         _('This is the only <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr> in the local network'));
 174
 175
 176                 s.taboption('files', form.Flag, 'readethers',
 177                         _('Use <code>/etc/ethers</code>'),
 178                         _('Read <code>/etc/ethers</code> to configure the <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr>-Server'));
 179
 180                 s.taboption('files', form.Value, 'leasefile',
 181                         _('Leasefile'),
 182                         _('file where given <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr>-leases will be stored'));
 183
 184                 s.taboption('files', form.Flag, 'noresolv',
 185                         _('Ignore resolve file')).optional = true;
 186
 187                 o = s.taboption('files', form.Value, 'resolvfile',
 188                         _('Resolve file'),
 189                         _('local <abbr title="Domain Name System">DNS</abbr> file'));
 190
 191                 o.depends('noresolv', '0');
 192                 o.placeholder = '/tmp/resolv.conf.auto';
 193                 o.optional = true;
 194
 195
 196                 s.taboption('files', form.Flag, 'nohosts',
 197                         _('Ignore <code>/etc/hosts</code>')).optional = true;
 198
 199                 s.taboption('files', form.DynamicList, 'addnhosts',
 200                         _('Additional Hosts files')).optional = true;
 201
 202                 o = s.taboption('advanced', form.Flag, 'quietdhcp',
 203                         _('Suppress logging'),
 204                         _('Suppress logging of the routine operation of these protocols'));
 205                 o.optional = true;
 206
 207                 o = s.taboption('advanced', form.Flag, 'sequential_ip',
 208                         _('Allocate IP sequentially'),
 209                         _('Allocate IP addresses sequentially, starting from the lowest available address'));
 210                 o.optional = true;
 211
 212                 o = s.taboption('advanced', form.Flag, 'boguspriv',
 213                         _('Filter private'),
 214                         _('Do not forward reverse lookups for local networks'));
 215                 o.default = o.enabled;
 216
 217                 s.taboption('advanced', form.Flag, 'filterwin2k',
 218                         _('Filter useless'),
 219                         _('Do not forward requests that cannot be answered by public name servers'));
 220
 221
 222                 s.taboption('advanced', form.Flag, 'localise_queries',
 223                         _('Localise queries'),
 224                         _('Localise hostname depending on the requesting subnet if multiple IPs are available'));
 225
 226                 if (L.hasSystemFeature('dnsmasq', 'dnssec')) {
 227                         o = s.taboption('advanced', form.Flag, 'dnssec',
 228                                 _('DNSSEC'));
 229                         o.optional = true;
 230
 231                         o = s.taboption('advanced', form.Flag, 'dnsseccheckunsigned',
 232                                 _('DNSSEC check unsigned'),
 233                                 _('Requires upstream supports DNSSEC; verify unsigned domain responses really come from unsigned domains'));
 234                         o.default = o.enabled;
 235                         o.optional = true;
 236                 }
 237
 238                 s.taboption('general', form.Value, 'local',
 239                         _('Local server'),
 240                         _('Local domain specification. Names matching this domain are never forwarded and are resolved from DHCP or hosts files only'));
 241
 242                 s.taboption('general', form.Value, 'domain',
 243                         _('Local domain'),
 244                         _('Local domain suffix appended to DHCP names and hosts file entries'));
 245
 246                 s.taboption('advanced', form.Flag, 'expandhosts',
 247                         _('Expand hosts'),
 248                         _('Add local domain suffix to names served from hosts files'));
 249
 250                 s.taboption('advanced', form.Flag, 'nonegcache',
 251                         _('No negative cache'),
 252                         _('Do not cache negative replies, e.g. for not existing domains'));
 253
 254                 s.taboption('advanced', form.Value, 'serversfile',
 255                         _('Additional servers file'),
 256                         _('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.'));
 257
 258                 s.taboption('advanced', form.Flag, 'strictorder',
 259                         _('Strict order'),
 260                         _('<abbr title="Domain Name System">DNS</abbr> servers will be queried in the order of the resolvfile')).optional = true;
 261
 262                 s.taboption('advanced', form.Flag, 'allservers',
 263                         _('All Servers'),
 264                         _('Query all available upstream <abbr title="Domain Name System">DNS</abbr> servers')).optional = true;
 265
 266                 o = s.taboption('advanced', form.DynamicList, 'bogusnxdomain', _('Bogus NX Domain Override'),
 267                         _('List of hosts that supply bogus NX domain results'));
 268
 269                 o.optional = true;
 270                 o.placeholder = '67.215.65.132';
 271
 272
 273                 s.taboption('general', form.Flag, 'logqueries',
 274                         _('Log queries'),
 275                         _('Write received DNS requests to syslog')).optional = true;
 276
 277                 o = s.taboption('general', form.DynamicList, 'server', _('DNS forwardings'),
 278                         _('List of <abbr title="Domain Name System">DNS</abbr> servers to forward requests to'));
 279
 280                 o.optional = true;
 281                 o.placeholder = '/example.org/10.1.2.3';
 282                 o.validate = validateServerSpec;
 283
 284
 285                 o = s.taboption('general', form.Flag, 'rebind_protection',
 286                         _('Rebind protection'),
 287                         _('Discard upstream RFC1918 responses'));
 288
 289                 o.rmempty = false;
 290
 291
 292                 o = s.taboption('general', form.Flag, 'rebind_localhost',
 293                         _('Allow localhost'),
 294                         _('Allow upstream responses in the 127.0.0.0/8 range, e.g. for RBL services'));
 295
 296                 o.depends('rebind_protection', '1');
 297
 298
 299                 o = s.taboption('general', form.DynamicList, 'rebind_domain',
 300                         _('Domain whitelist'),
 301                         _('List of domains to allow RFC1918 responses for'));
 302                 o.optional = true;
 303
 304                 o.depends('rebind_protection', '1');
 305                 o.placeholder = 'ihost.netflix.com';
 306                 o.validate = validateAddressList;
 307
 308
 309                 o = s.taboption('advanced', form.Value, 'port',
 310                         _('<abbr title="Domain Name System">DNS</abbr> server port'),
 311                         _('Listening port for inbound DNS queries'));
 312
 313                 o.optional = true;
 314                 o.datatype = 'port';
 315                 o.placeholder = 53;
 316
 317
 318                 o = s.taboption('advanced', form.Value, 'queryport',
 319                         _('<abbr title="Domain Name System">DNS</abbr> query port'),
 320                         _('Fixed source port for outbound DNS queries'));
 321
 322                 o.optional = true;
 323                 o.datatype = 'port';
 324                 o.placeholder = _('any');
 325
 326
 327                 o = s.taboption('advanced', form.Value, 'dhcpleasemax',
 328                         _('<abbr title="maximal">Max.</abbr> <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr> leases'),
 329                         _('Maximum allowed number of active DHCP leases'));
 330
 331                 o.optional = true;
 332                 o.datatype = 'uinteger';
 333                 o.placeholder = _('unlimited');
 334
 335
 336                 o = s.taboption('advanced', form.Value, 'ednspacket_max',
 337                         _('<abbr title="maximal">Max.</abbr> <abbr title="Extension Mechanisms for Domain Name System">EDNS0</abbr> packet size'),
 338                         _('Maximum allowed size of EDNS.0 UDP packets'));
 339
 340                 o.optional = true;
 341                 o.datatype = 'uinteger';
 342                 o.placeholder = 1280;
 343
 344
 345                 o = s.taboption('advanced', form.Value, 'dnsforwardmax',
 346                         _('<abbr title="maximal">Max.</abbr> concurrent queries'),
 347                         _('Maximum allowed number of concurrent DNS queries'));
 348
 349                 o.optional = true;
 350                 o.datatype = 'uinteger';
 351                 o.placeholder = 150;
 352
 353                 o = s.taboption('advanced', form.Value, 'cachesize',
 354                         _('Size of DNS query cache'),
 355                         _('Number of cached DNS entries (max is 10000, 0 is no caching)'));
 356                 o.optional = true;
 357                 o.datatype = 'range(0,10000)';
 358                 o.placeholder = 150;
 359
 360                 s.taboption('tftp', form.Flag, 'enable_tftp',
 361                         _('Enable TFTP server')).optional = true;
 362
 363                 o = s.taboption('tftp', form.Value, 'tftp_root',
 364                         _('TFTP server root'),
 365                         _('Root directory for files served via TFTP'));
 366
 367                 o.optional = true;
 368                 o.depends('enable_tftp', '1');
 369                 o.placeholder = '/';
 370
 371
 372                 o = s.taboption('tftp', form.Value, 'dhcp_boot',
 373                         _('Network boot image'),
 374                         _('Filename of the boot image advertised to clients'));
 375
 376                 o.optional = true;
 377                 o.depends('enable_tftp', '1');
 378                 o.placeholder = 'pxelinux.0';
 379
 380                 o = s.taboption('general', form.Flag, 'localservice',
 381                         _('Local Service Only'),
 382                         _('Limit DNS service to subnets interfaces on which we are serving DNS.'));
 383                 o.optional = false;
 384                 o.rmempty = false;
 385
 386                 o = s.taboption('general', form.Flag, 'nonwildcard',
 387                         _('Non-wildcard'),
 388                         _('Bind dynamically to interfaces rather than wildcard address (recommended as linux default)'));
 389                 o.default = o.enabled;
 390                 o.optional = false;
 391                 o.rmempty = true;
 392
 393                 o = s.taboption('general', form.DynamicList, 'interface',
 394                         _('Listen Interfaces'),
 395                         _('Limit listening to these interfaces, and loopback.'));
 396                 o.optional = true;
 397
 398                 o = s.taboption('general', form.DynamicList, 'notinterface',
 399                         _('Exclude interfaces'),
 400                         _('Prevent listening on these interfaces.'));
 401                 o.optional = true;
 402
 403                 o = s.taboption('leases', form.SectionValue, '__leases__', form.GridSection, 'host', null,
 404                         _('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 />' +
 405                         _('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.'));
 406
 407                 ss = o.subsection;
 408
 409                 ss.addremove = true;
 410                 ss.anonymous = true;
 411
 412                 so = ss.option(form.Value, 'name', _('Hostname'));
 413                 so.validate = validateHostname;
 414                 so.rmempty  = true;
 415                 so.write = function(section, value) {
 416                         uci.set('dhcp', section, 'name', value);
 417                         uci.set('dhcp', section, 'dns', '1');
 418                 };
 419                 so.remove = function(section) {
 420                         uci.unset('dhcp', section, 'name');
 421                         uci.unset('dhcp', section, 'dns');
 422                 };
 423
 424                 so = ss.option(form.Value, 'mac', _('<abbr title="Media Access Control">MAC</abbr>-Address'));
 425                 so.datatype = 'list(unique(macaddr))';
 426                 so.rmempty  = true;
 427                 so.cfgvalue = function(section) {
 428                         var macs = uci.get('dhcp', section, 'mac'),
 429                             result = [];
 430
 431                         if (!Array.isArray(macs))
 432                                 macs = (macs != null && macs != '') ? macs.split(/\ss+/) : [];
 433
 434                         for (var i = 0, mac; (mac = macs[i]) != null; i++)
 435                                 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))
 436                                         result.push('%02X:%02X:%02X:%02X:%02X:%02X'.format(
 437                                                 parseInt(RegExp.$1, 16), parseInt(RegExp.$2, 16),
 438                                                 parseInt(RegExp.$3, 16), parseInt(RegExp.$4, 16),
 439                                                 parseInt(RegExp.$5, 16), parseInt(RegExp.$6, 16)));
 440
 441                         return result.length ? result.join(' ') : null;
 442                 };
 443                 so.renderWidget = function(section_id, option_index, cfgvalue) {
 444                         var node = form.Value.prototype.renderWidget.apply(this, [section_id, option_index, cfgvalue]),
 445                             ipopt = this.section.children.filter(function(o) { return o.option == 'ip' })[0];
 446
 447                         node.addEventListener('cbi-dropdown-change', L.bind(function(ipopt, section_id, ev) {
 448                                 var mac = ev.detail.value.value;
 449                                 if (mac == null || mac == '' || !hosts[mac] || !hosts[mac].ipv4)
 450                                         return;
 451
 452                                 var ip = ipopt.formvalue(section_id);
 453                                 if (ip != null && ip != '')
 454                                         return;
 455
 456                                 var node = ipopt.map.findElement('id', ipopt.cbid(section_id));
 457                                 if (node)
 458                                         dom.callClassMethod(node, 'setValue', hosts[mac].ipv4);
 459                         }, this, ipopt, section_id));
 460
 461                         return node;
 462                 };
 463                 Object.keys(hosts).forEach(function(mac) {
 464                         var hint = hosts[mac].name || hosts[mac].ipv4;
 465                         so.value(mac, hint ? '%s (%s)'.format(mac, hint) : mac);
 466                 });
 467
 468                 so = ss.option(form.Value, 'ip', _('<abbr title="Internet Protocol Version 4">IPv4</abbr>-Address'));
 469                 so.datatype = 'or(ip4addr,"ignore")';
 470                 so.validate = function(section, value) {
 471                         var mac = this.map.lookupOption('mac', section),
 472                             name = this.map.lookupOption('name', section),
 473                             m = mac ? mac[0].formvalue(section) : null,
 474                             n = name ? name[0].formvalue(section) : null;
 475
 476                         if ((m == null || m == '') && (n == null || n == ''))
 477                                 return _('One of hostname or mac address must be specified!');
 478
 479                         return true;
 480                 };
 481                 Object.keys(hosts).forEach(function(mac) {
 482                         if (hosts[mac].ipv4) {
 483                                 var hint = hosts[mac].name;
 484                                 so.value(hosts[mac].ipv4, hint ? '%s (%s)'.format(hosts[mac].ipv4, hint) : hosts[mac].ipv4);
 485                         }
 486                 });
 487
 488                 so = ss.option(form.Value, 'leasetime', _('Lease time'));
 489                 so.rmempty = true;
 490
 491                 so = ss.option(form.Value, 'duid', _('<abbr title="The DHCP Unique Identifier">DUID</abbr>'));
 492                 so.datatype = 'and(rangelength(20,36),hexstring)';
 493                 Object.keys(duids).forEach(function(duid) {
 494                         so.value(duid, '%s (%s)'.format(duid, duids[duid].hostname || duids[duid].macaddr || duids[duid].ip6addr || '?'));
 495                 });
 496
 497                 so = ss.option(form.Value, 'hostid', _('<abbr title="Internet Protocol Version 6">IPv6</abbr>-Suffix (hex)'));
 498
 499                 o = s.taboption('leases', CBILeaseStatus, '__status__');
 500
 501                 if (has_dhcpv6)
 502                         o = s.taboption('leases', CBILease6Status, '__status6__');
 503
 504                 return m.render().then(function(mapEl) {
 505                         poll.add(function() {
 506                                 return callDHCPLeases().then(function(leaseinfo) {
 507                                         var leases = Array.isArray(leaseinfo.dhcp_leases) ? leaseinfo.dhcp_leases : [],
 508                                             leases6 = Array.isArray(leaseinfo.dhcp6_leases) ? leaseinfo.dhcp6_leases : [];
 509
 510                                         cbi_update_table(mapEl.querySelector('#lease_status_table'),
 511                                                 leases.map(function(lease) {
 512                                                         var exp;
 513
 514                                                         if (lease.expires === false)
 515                                                                 exp = E('em', _('unlimited'));
 516                                                         else if (lease.expires <= 0)
 517                                                                 exp = E('em', _('expired'));
 518                                                         else
 519                                                                 exp = '%t'.format(lease.expires);
 520
 521                                                         return [
 522                                                                 lease.hostname || '?',
 523                                                                 lease.ipaddr,
 524                                                                 lease.macaddr,
 525                                                                 exp
 526                                                         ];
 527                                                 }),
 528                                                 E('em', _('There are no active leases')));
 529
 530                                         if (has_dhcpv6) {
 531                                                 cbi_update_table(mapEl.querySelector('#lease6_status_table'),
 532                                                         leases6.map(function(lease) {
 533                                                                 var exp;
 534
 535                                                                 if (lease.expires === false)
 536                                                                         exp = E('em', _('unlimited'));
 537                                                                 else if (lease.expires <= 0)
 538                                                                         exp = E('em', _('expired'));
 539                                                                 else
 540                                                                         exp = '%t'.format(lease.expires);
 541
 542                                                                 var hint = lease.macaddr ? hosts[lease.macaddr] : null,
 543                                                                     name = hint ? (hint.name || hint.ipv4 || hint.ipv6) : null,
 544                                                                     host = null;
 545
 546                                                                 if (name && lease.hostname && lease.hostname != name && lease.ip6addr != name)
 547                                                                         host = '%s (%s)'.format(lease.hostname, name);
 548                                                                 else if (lease.hostname)
 549                                                                         host = lease.hostname;
 550                                                                 else if (name)
 551                                                                         host = name;
 552
 553                                                                 return [
 554                                                                         host || '-',
 555                                                                         lease.ip6addrs ? lease.ip6addrs.join(' ') : lease.ip6addr,
 556                                                                         lease.duid,
 557                                                                         exp
 558                                                                 ];
 559                                                         }),
 560                                                         E('em', _('There are no active leases')));
 561                                         }
 562                                 });
 563                         });
 564
 565                         return mapEl;
 566                 });
 567         }
 568 });