mirror of
https://github.com/StackExchange/dnscontrol.git
synced 2025-01-10 09:27:46 +08:00
495 lines
13 KiB
JavaScript
495 lines
13 KiB
JavaScript
"use strict";
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var conf = {
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registrars: [],
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dns_providers: [],
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domains: []
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};
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var defaultArgs = [];
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function initialize(){
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conf = {
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registrars: [],
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dns_providers: [],
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domains: []
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};
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defaultArgs = [];
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}
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function NewRegistrar(name,type,meta) {
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if (type) {
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type == "MANUAL";
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}
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var reg = {name: name, type: type, meta: meta};
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conf.registrars.push(reg);
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return name;
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}
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function NewDnsProvider(name, type, meta) {
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if ((typeof meta === 'object') && ('ip_conversions' in meta)) {
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meta.ip_conversions = format_tt(meta.ip_conversions)
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}
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var dsp = {name: name, type: type, meta: meta};
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conf.dns_providers.push(dsp);
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return name;
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}
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function newDomain(name,registrar) {
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return {name: name, registrar: registrar, meta:{}, records:[], dnsProviders: {}, defaultTTL: 0, nameservers:[]};
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}
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function processDargs(m, domain) {
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// for each modifier, if it is a...
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// function: call it with domain
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// array: process recursively
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// object: merge it into metadata
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if (_.isFunction(m)) {
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m(domain);
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} else if (_.isArray(m)) {
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for (var j in m) {
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processDargs(m[j], domain)
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}
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} else if (_.isObject(m)) {
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_.extend(domain.meta,m);
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} else {
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throw "WARNING: domain modifier type unsupported: "+ typeof m + " Domain: "+ domain.name;
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}
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}
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// D(name,registrar): Create a DNS Domain. Use the parameters as records and mods.
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function D(name,registrar) {
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var domain = newDomain(name,registrar);
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for (var i = 0; i< defaultArgs.length; i++){
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processDargs(defaultArgs[i],domain)
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}
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for (var i = 2; i<arguments.length; i++) {
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var m = arguments[i];
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processDargs(m, domain)
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}
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conf.domains.push(domain)
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}
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// DEFAULTS provides a set of default arguments to apply to all future domains.
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// Each call to DEFAULTS will clear any previous values set.
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function DEFAULTS(){
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defaultArgs = [];
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for (var i = 0; i<arguments.length; i++) {
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defaultArgs.push(arguments[i]);
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}
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}
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// TTL(v): Set the TTL for a DNS record.
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function TTL(v) {
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if (_.isString(v)){
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v = stringToDuration(v);
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}
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return function(r) {
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r.ttl = v;
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}
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}
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function stringToDuration(v){
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var matches = v.match(/^(\d+)([smhdwny]?)$/);
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if (matches == null){
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throw v + " is not a valid duration string"
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}
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unit = "s"
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if (matches[2]){
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unit = matches[2]
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}
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v = parseInt(matches[1])
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var u = {"s":1, "m":60, "h":3600}
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u["d"] = u.h * 24
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u["w"] = u.d * 7
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u["n"] = u.d * 30
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u["y"] = u.d * 365
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v *= u[unit];
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return v
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}
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// DefaultTTL(v): Set the default TTL for the domain.
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function DefaultTTL(v) {
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if (_.isString(v)){
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v = stringToDuration(v);
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}
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return function(d) {
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d.defaultTTL = v;
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}
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}
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function makeCAAFlag(value){
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return function(record){
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record.caaflag |= value;
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};
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}
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// CAA_CRITICAL: Critical CAA flag
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var CAA_CRITICAL = makeCAAFlag(1<<0);
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// DnsProvider("providerName", 0)
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// nsCount of 0 means don't use or register any nameservers.
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// nsCount not provider means use all.
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function DnsProvider(name, nsCount){
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if(typeof nsCount === 'undefined'){
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nsCount = -1;
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}
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return function(d) {
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d.dnsProviders[name] = nsCount;
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}
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}
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// A(name,ip, recordModifiers...)
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var A = recordBuilder('A');
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// AAAA(name,ip, recordModifiers...)
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var AAAA = recordBuilder('AAAA');
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// ALIAS(name,target, recordModifiers...)
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var ALIAS = recordBuilder('ALIAS');
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// CAA(name,tag,value, recordModifiers...)
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var CAA = recordBuilder('CAA', {
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// TODO(tlim): It should be an error if value is not 0 or 128.
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args: [
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['name', _.isString],
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['tag', _.isString],
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['value', _.isString],
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],
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transform: function(record, args, modifiers){
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record.name = args.name;
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record.caatag = args.tag;
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record.target = args.value;
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},
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modifierNumber: function(record, value){
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record.caaflags |= value;
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},
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});
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// CNAME(name,target, recordModifiers...)
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var CNAME = recordBuilder('CNAME');
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// PTR(name,target, recordModifiers...)
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var PTR = recordBuilder('PTR');
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// SRV(name,priority,weight,port,target, recordModifiers...)
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var SRV = recordBuilder('SRV', {
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args: [
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['name', _.isString],
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['priority', _.isNumber],
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['weight', _.isNumber],
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['port', _.isNumber],
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['target', _.isString],
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],
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transform: function(record, args, modifiers){
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record.name = args.name;
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record.srvpriority = args.priority;
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record.srvweight = args.weight;
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record.srvport = args.port;
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record.target = args.target;
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},
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});
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// TXT(name,target, recordModifiers...)
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var TXT = recordBuilder('TXT');
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// MX(name,priority,target, recordModifiers...)
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var MX = recordBuilder('MX', {
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args: [
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['name', _.isString],
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['priority', _.isNumber],
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['target', _.isString],
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],
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transform: function(record, args, modifiers){
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record.name = args.name;
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record.mxpreference = args.priority;
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record.target = args.target;
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},
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});
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function checkArgs(checks, args, desc){
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if (args.length < checks.length){
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throw(desc)
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}
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for (var i = 0; i< checks.length; i++){
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if (!checks[i](args[i])){
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throw(desc+" - argument "+i+" is not correct type")
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}
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}
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}
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// NS(name,target, recordModifiers...)
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var NS = recordBuilder('NS');
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// NAMESERVER(name,target)
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function NAMESERVER(name, target) {
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return function(d) {
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d.nameservers.push({name: name, target: target})
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}
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}
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function format_tt(transform_table) {
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// Turn [[low: 1, high: 2, newBase: 3], [low: 4, high: 5, newIP: 6]]
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// into "1 ~ 2 ~ 3 ~; 4 ~ 5 ~ ~ 6"
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var lines = []
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for (var i=0; i < transform_table.length; i++) {
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var ip = transform_table[i];
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var newIP = ip.newIP;
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if (newIP){
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if(_.isArray(newIP)){
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newIP = _.map(newIP,function(i){return num2dot(i)}).join(",")
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}else{
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newIP = num2dot(newIP);
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}
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}
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var newBase = ip.newBase;
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if (newBase){
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if(_.isArray(newBase)){
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newBase = _.map(newBase,function(i){return num2dot(i)}).join(",")
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}else{
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newBase = num2dot(newBase);
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}
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}
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var row = [
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num2dot(ip.low),
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num2dot(ip.high),
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newBase,
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newIP
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]
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lines.push(row.join(" ~ "))
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}
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return lines.join(" ; ")
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}
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// IMPORT_TRANSFORM(translation_table, domain)
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var IMPORT_TRANSFORM = recordBuilder('IMPORT_TRANSFORM', {
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args: [
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['translation_table'],
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['domain'],
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['ttl', _.isNumber],
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],
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transform: function(record, args, modifiers){
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record.name = '@';
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record.target = args.domain;
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record.meta['transform_table'] = format_tt(args.translation_table);
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record.ttl = args.ttl;
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},
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});
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// PURGE()
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function PURGE(d) {
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d.KeepUnknown = false
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}
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// NO_PURGE()
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function NO_PURGE(d) {
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d.KeepUnknown = true
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}
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/**
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* @deprecated
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*/
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function getModifiers(args,start) {
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var mods = [];
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for (var i = start;i<args.length; i++) {
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mods.push(args[i])
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}
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return mods;
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}
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/**
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* Record type builder
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* @param {string} type Record type
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* @param {string} opts.args[][0] Argument name
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* @param {function=} opts.args[][1] Optional validator
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* @param {function=} opts.transform Function to apply arguments to record.
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* Take (record, args, modifier) as arguments. Any modifiers will be
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* applied before this function. It should mutate the given record.
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* @param {function=} opts.applyModifier Function to apply modifiers to the record
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*/
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function recordBuilder(type, opts){
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opts = _.defaults({}, opts, {
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args: [
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['name', _.isString],
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['target'],
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],
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transform: function(record, args, modifiers) {
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// record will have modifiers already applied
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// args will be an object for parameters defined
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record.name = args.name;
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if (_.isNumber(args.target)) {
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record.target = num2dot(args.target);
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} else {
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record.target = args.target;
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}
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},
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applyModifier: function(record, modifiers) {
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for (var i = 0; i < modifiers.length; i++) {
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var mod = modifiers[i];
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if (_.isFunction(mod)) {
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mod(record);
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} else if (_.isObject(mod)) {
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// convert transforms to strings
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if (mod.transform && _.isArray(mod.transform)) {
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mod.transform = format_tt(mod.transform);
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}
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_.extend(record.meta, mod);
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} else {
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throw "ERROR: Unknown modifier type";
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}
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}
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},
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});
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return function(){
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var parsedArgs = {};
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var modifiers = [];
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if (arguments.length < opts.args.length) {
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var argumentsList = opts.args.map(function(item){
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return item[0];
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}).join(', ');
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throw type + " record requires " + opts.args.length + " arguments (" + argumentsList + "). Only " + arguments.length + " were supplied";
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return;
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}
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// collect arguments
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for (var i = 0; i < opts.args.length; i++) {
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var argDefinition = opts.args[i];
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var value = arguments[i];
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if (argDefinition.length > 1) {
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// run validator if supplied
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if(!argDefinition[1](value)){
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throw type + " record " + argDefinition[0] + " argument validation failed";
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}
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}
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parsedArgs[argDefinition[0]] = value;
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}
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// collect modifiers
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for (var i = opts.args.length; i < arguments.length; i++) {
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modifiers.push(arguments[i]);
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}
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return function(d){
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var record = {
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type: type,
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meta: {},
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ttl: d.defaultTTL,
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};
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opts.applyModifier(record, modifiers);
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opts.transform(record, parsedArgs, modifiers);
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d.records.push(record);
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return record;
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};
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};
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}
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/**
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* @deprecated
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*/
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function addRecord(d,type,name,target,mods) {
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// if target is number, assume ip address. convert it.
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if (_.isNumber(target)) {
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target = num2dot(target);
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}
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var rec = {type: type, name: name, target: target, ttl:d.defaultTTL, priority: 0, meta:{}};
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// for each modifier, decide based on type:
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// - Function: call is with the record as the argument
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// - Object: merge it into the metadata
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// - Number: IF MX record assume it is priority
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if (mods) {
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for (var i = 0; i< mods.length; i++) {
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var m = mods[i]
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if (_.isFunction(m)) {
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m(rec);
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} else if (_.isObject(m)) {
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//convert transforms to strings
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if (m.transform && _.isArray(m.transform)){
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m.transform = format_tt(m.transform)
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}
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_.extend(rec.meta,m);
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_.extend(rec.meta,m);
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} else {
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console.log("WARNING: Modifier type unsupported:", typeof m, "(Skipping!)");
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}
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}
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}
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d.records.push(rec);
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return rec;
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}
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//ip conversion functions from http://stackoverflow.com/a/8105740/121660
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// via http://javascript.about.com/library/blipconvert.htm
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function IP(dot)
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{
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var d = dot.split('.');
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return ((((((+d[0])*256)+(+d[1]))*256)+(+d[2]))*256)+(+d[3]);
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}
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function num2dot(num)
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{
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if(num === undefined){
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return "";
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}
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if (_.isString(num)){
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return num
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}
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var d = num%256;
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for (var i = 3; i > 0; i--)
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{
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num = Math.floor(num/256);
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d = num%256 + '.' + d;
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}
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return d;
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}
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// Cloudflare aliases:
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// Meta settings for individual records.
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var CF_PROXY_OFF = {'cloudflare_proxy': 'off'}; // Proxy disabled.
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var CF_PROXY_ON = {'cloudflare_proxy': 'on'}; // Proxy enabled.
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var CF_PROXY_FULL = {'cloudflare_proxy': 'full'}; // Proxy+Railgun enabled.
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// Per-domain meta settings:
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// Proxy default off for entire domain (the default):
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var CF_PROXY_DEFAULT_OFF = {'cloudflare_proxy_default': 'off'};
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// Proxy default on for entire domain:
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var CF_PROXY_DEFAULT_ON = {'cloudflare_proxy_default': 'on'};
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// CUSTOM, PROVIDER SPECIFIC RECORD TYPES
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function _validateCloudFlareRedirect(value){
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if(!_.isString(value)){
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return false;
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}
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return value.indexOf(",") === -1;
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}
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var CF_REDIRECT = recordBuilder("CF_REDIRECT", {
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args: [
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["source", _validateCloudFlareRedirect],
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["destination", _validateCloudFlareRedirect],
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],
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transform: function(record, args, modifiers){
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record.name = "@";
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record.target = args.source + "," + args.destination;
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},
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});
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var CF_TEMP_REDIRECT = recordBuilder("CF_TEMP_REDIRECT", {
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args: [
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["source", _validateCloudFlareRedirect],
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["destination", _validateCloudFlareRedirect],
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],
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transform: function(record, args, modifiers){
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record.name = "@";
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record.target = args.source + "," + args.destination;
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},
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});
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