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561 lines
12 KiB
JavaScript
561 lines
12 KiB
JavaScript
'use strict';
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'require uci';
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'require rpc';
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'require tools.prng as random';
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function initFirewallState() {
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return L.resolveDefault(uci.load('firewall'));
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}
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function parseEnum(s, values) {
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if (s == null)
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return null;
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s = String(s).toUpperCase();
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if (s == '')
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return null;
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for (var i = 0; i < values.length; i++)
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if (values[i].toUpperCase().indexOf(s) == 0)
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return values[i];
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return null;
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}
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function parsePolicy(s, defaultValue) {
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return parseEnum(s, ['DROP', 'REJECT', 'ACCEPT']) || (arguments.length < 2 ? null : defaultValue);
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}
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var Firewall, AbstractFirewallItem, Defaults, Zone, Forwarding, Redirect, Rule;
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function lookupZone(name) {
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var z = uci.get('firewall', name);
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if (z != null && z['.type'] == 'zone')
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return new Zone(z['.name']);
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var sections = uci.sections('firewall', 'zone');
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for (var i = 0; i < sections.length; i++) {
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if (sections[i].name != name)
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continue;
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return new Zone(sections[i]['.name']);
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}
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return null;
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}
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function getColorForName(forName) {
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if (forName == null)
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return '#eeeeee';
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else if (forName == 'lan')
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return '#90f090';
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else if (forName == 'wan')
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return '#f09090';
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return random.derive_color(forName);
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}
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Firewall = L.Class.extend({
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getDefaults: function() {
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return initFirewallState().then(function() {
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return new Defaults();
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});
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},
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newZone: function() {
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return initFirewallState().then(L.bind(function() {
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var name = 'newzone',
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count = 1;
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while (this.getZone(name) != null)
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name = 'newzone%d'.format(++count);
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return this.addZone(name);
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}, this));
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},
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addZone: function(name) {
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return initFirewallState().then(L.bind(function() {
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if (name == null || !/^[a-zA-Z0-9_]+$/.test(name))
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return null;
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if (lookupZone(name) != null)
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return null;
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var d = new Defaults(),
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z = uci.add('firewall', 'zone');
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uci.set('firewall', z, 'name', name);
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uci.set('firewall', z, 'input', d.getInput() || 'DROP');
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uci.set('firewall', z, 'output', d.getOutput() || 'DROP');
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uci.set('firewall', z, 'forward', d.getForward() || 'DROP');
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return new Zone(z);
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}, this));
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},
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getZone: function(name) {
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return initFirewallState().then(function() {
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return lookupZone(name);
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});
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},
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getZones: function() {
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return initFirewallState().then(function() {
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var sections = uci.sections('firewall', 'zone'),
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zones = [];
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for (var i = 0; i < sections.length; i++)
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zones.push(new Zone(sections[i]['.name']));
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zones.sort(function(a, b) { return a.getName() > b.getName() });
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return zones;
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});
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},
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getZoneByNetwork: function(network) {
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return initFirewallState().then(function() {
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var sections = uci.sections('firewall', 'zone');
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for (var i = 0; i < sections.length; i++)
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if (L.toArray(sections[i].network).indexOf(network) != -1)
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return new Zone(sections[i]['.name']);
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return null;
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});
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},
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deleteZone: function(name) {
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return initFirewallState().then(function() {
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var section = uci.get('firewall', name),
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found = false;
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if (section != null && section['.type'] == 'zone') {
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found = true;
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name = section.name;
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uci.remove('firewall', section['.name']);
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}
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else if (name != null) {
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var sections = uci.sections('firewall', 'zone');
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for (var i = 0; i < sections.length; i++) {
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if (sections[i].name != name)
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continue;
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found = true;
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uci.remove('firewall', sections[i]['.name']);
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}
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}
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if (found == true) {
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sections = uci.sections('firewall');
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for (var i = 0; i < sections.length; i++) {
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if (sections[i]['.type'] != 'rule' &&
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sections[i]['.type'] != 'redirect' &&
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sections[i]['.type'] != 'forwarding')
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continue;
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if (sections[i].src == name || sections[i].dest == name)
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uci.remove('firewall', sections[i]['.name']);
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}
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}
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return found;
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});
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},
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renameZone: function(oldName, newName) {
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return initFirewallState().then(L.bind(function() {
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if (oldName == null || newName == null || !/^[a-zA-Z0-9_]+$/.test(newName))
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return false;
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if (lookupZone(newName) != null)
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return false;
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var sections = uci.sections('firewall', 'zone'),
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found = false;
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for (var i = 0; i < sections.length; i++) {
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if (sections[i].name != oldName)
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continue;
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uci.set('firewall', sections[i]['.name'], 'name', newName);
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found = true;
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}
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if (found == true) {
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sections = uci.sections('firewall');
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for (var i = 0; i < sections.length; i++) {
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if (sections[i]['.type'] != 'rule' &&
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sections[i]['.type'] != 'redirect' &&
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sections[i]['.type'] != 'forwarding')
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continue;
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if (sections[i].src == oldName)
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uci.set('firewall', sections[i]['.name'], 'src', newName);
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if (sections[i].dest == oldName)
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uci.set('firewall', sections[i]['.name'], 'dest', newName);
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}
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}
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return found;
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}, this));
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},
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deleteNetwork: function(network) {
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return this.getZones().then(L.bind(function(zones) {
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var rv = false;
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for (var i = 0; i < zones.length; i++)
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if (zones[i].deleteNetwork(network))
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rv = true;
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return rv;
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}, this));
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},
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getColorForName: getColorForName,
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getZoneColorStyle: function(zone) {
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var hex = (zone instanceof Zone) ? zone.getColor() : getColorForName((zone != null && zone != '*') ? zone : null);
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return '--zone-color-rgb:%d, %d, %d; background-color:rgb(var(--zone-color-rgb))'.format(
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parseInt(hex.substring(1, 3), 16),
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parseInt(hex.substring(3, 5), 16),
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parseInt(hex.substring(5, 7), 16)
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);
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},
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});
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AbstractFirewallItem = L.Class.extend({
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get: function(option) {
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return uci.get('firewall', this.sid, option);
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},
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set: function(option, value) {
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return uci.set('firewall', this.sid, option, value);
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}
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});
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Defaults = AbstractFirewallItem.extend({
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__init__: function() {
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var sections = uci.sections('firewall', 'defaults');
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for (var i = 0; i < sections.length; i++) {
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this.sid = sections[i]['.name'];
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break;
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}
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if (this.sid == null)
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this.sid = uci.add('firewall', 'defaults');
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},
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isSynFlood: function() {
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return (this.get('syn_flood') == '1');
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},
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isDropInvalid: function() {
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return (this.get('drop_invalid') == '1');
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},
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getInput: function() {
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return parsePolicy(this.get('input'), 'DROP');
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},
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getOutput: function() {
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return parsePolicy(this.get('output'), 'DROP');
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},
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getForward: function() {
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return parsePolicy(this.get('forward'), 'DROP');
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}
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});
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Zone = AbstractFirewallItem.extend({
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__init__: function(name) {
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var section = uci.get('firewall', name);
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if (section != null && section['.type'] == 'zone') {
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this.sid = name;
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this.data = section;
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}
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else if (name != null) {
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var sections = uci.get('firewall', 'zone');
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for (var i = 0; i < sections.length; i++) {
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if (sections[i].name != name)
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continue;
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this.sid = sections[i]['.name'];
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this.data = sections[i];
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break;
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}
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}
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},
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isMasquerade: function() {
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return (this.get('masq') == '1');
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},
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getName: function() {
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return this.get('name');
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},
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getNetwork: function() {
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return this.get('network');
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},
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getInput: function() {
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return parsePolicy(this.get('input'), (new Defaults()).getInput());
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},
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getOutput: function() {
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return parsePolicy(this.get('output'), (new Defaults()).getOutput());
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},
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getForward: function() {
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return parsePolicy(this.get('forward'), (new Defaults()).getForward());
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},
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addNetwork: function(network) {
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var section = uci.get('network', network);
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if (section == null || section['.type'] != 'interface')
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return false;
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var newNetworks = this.getNetworks();
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if (newNetworks.filter(function(net) { return net == network }).length)
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return false;
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newNetworks.push(network);
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this.set('network', newNetworks);
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return true;
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},
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deleteNetwork: function(network) {
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var oldNetworks = this.getNetworks(),
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newNetworks = oldNetworks.filter(function(net) { return net != network });
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if (newNetworks.length > 0)
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this.set('network', newNetworks);
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else
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this.set('network', null);
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return (newNetworks.length < oldNetworks.length);
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},
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getNetworks: function() {
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return L.toArray(this.get('network'));
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},
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clearNetworks: function() {
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this.set('network', null);
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},
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getDevices: function() {
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return L.toArray(this.get('device'));
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},
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getSubnets: function() {
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return L.toArray(this.get('subnet'));
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},
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getForwardingsBy: function(what) {
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var sections = uci.sections('firewall', 'forwarding'),
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forwards = [];
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for (var i = 0; i < sections.length; i++) {
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if (sections[i].src == null || sections[i].dest == null)
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continue;
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if (sections[i][what] != this.getName())
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continue;
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forwards.push(new Forwarding(sections[i]['.name']));
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}
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return forwards;
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},
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addForwardingTo: function(dest) {
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var forwards = this.getForwardingsBy('src'),
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zone = lookupZone(dest);
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if (zone == null || zone.getName() == this.getName())
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return null;
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for (var i = 0; i < forwards.length; i++)
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if (forwards[i].getDestination() == zone.getName())
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return null;
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var sid = uci.add('firewall', 'forwarding');
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uci.set('firewall', sid, 'src', this.getName());
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uci.set('firewall', sid, 'dest', zone.getName());
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return new Forwarding(sid);
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},
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addForwardingFrom: function(src) {
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var forwards = this.getForwardingsBy('dest'),
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zone = lookupZone(src);
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if (zone == null || zone.getName() == this.getName())
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return null;
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for (var i = 0; i < forwards.length; i++)
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if (forwards[i].getSource() == zone.getName())
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return null;
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var sid = uci.add('firewall', 'forwarding');
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uci.set('firewall', sid, 'src', zone.getName());
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uci.set('firewall', sid, 'dest', this.getName());
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return new Forwarding(sid);
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},
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deleteForwardingsBy: function(what) {
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var sections = uci.sections('firewall', 'forwarding'),
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found = false;
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for (var i = 0; i < sections.length; i++) {
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if (sections[i].src == null || sections[i].dest == null)
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continue;
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if (sections[i][what] != this.getName())
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continue;
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uci.remove('firewall', sections[i]['.name']);
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found = true;
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}
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return found;
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},
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deleteForwarding: function(forwarding) {
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if (!(forwarding instanceof Forwarding))
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return false;
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var section = uci.get('firewall', forwarding.sid);
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if (!section || section['.type'] != 'forwarding')
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return false;
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uci.remove('firewall', section['.name']);
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return true;
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},
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addRedirect: function(options) {
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var sid = uci.add('firewall', 'redirect');
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if (options != null && typeof(options) == 'object')
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for (var key in options)
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if (options.hasOwnProperty(key))
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uci.set('firewall', sid, key, options[key]);
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uci.set('firewall', sid, 'src', this.getName());
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return new Redirect(sid);
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},
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addRule: function(options) {
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var sid = uci.add('firewall', 'rule');
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if (options != null && typeof(options) == 'object')
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for (var key in options)
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if (options.hasOwnProperty(key))
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uci.set('firewall', sid, key, options[key]);
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uci.set('firewall', sid, 'src', this.getName());
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return new Rule(sid);
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},
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getColor: function(forName) {
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var name = (arguments.length > 0 ? forName : this.getName());
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return getColorForName(name);
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}
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});
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Forwarding = AbstractFirewallItem.extend({
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__init__: function(sid) {
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this.sid = sid;
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},
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getSource: function() {
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return this.get('src');
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},
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getDestination: function() {
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return this.get('dest');
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},
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getSourceZone: function() {
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return lookupZone(this.getSource());
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},
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getDestinationZone: function() {
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return lookupZone(this.getDestination());
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}
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});
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Rule = AbstractFirewallItem.extend({
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getSource: function() {
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return this.get('src');
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},
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getDestination: function() {
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return this.get('dest');
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},
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getSourceZone: function() {
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return lookupZone(this.getSource());
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},
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getDestinationZone: function() {
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return lookupZone(this.getDestination());
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}
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});
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Redirect = AbstractFirewallItem.extend({
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getSource: function() {
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return this.get('src');
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},
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getDestination: function() {
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return this.get('dest');
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},
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getSourceZone: function() {
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return lookupZone(this.getSource());
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},
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getDestinationZone: function() {
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return lookupZone(this.getDestination());
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}
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});
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return Firewall;
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