mirror of
https://github.com/smogon/pokemon-showdown.git
synced 2026-05-06 22:43:29 -05:00
12b673bb49
I used a hack to make the multiple declaration errors go away, so all that remained in jsHint were actual errors, which I've now mostly fixed. All this linting ended up uncovering one actual bug: Uproar's message not showing. It's a very minor bug in a move no one uses, so I'm going to fold it into this commit.
56 lines
1.4 KiB
JavaScript
56 lines
1.4 KiB
JavaScript
/**
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* DNSBL support [OPTIONAL]
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* Pokemon Showdown - http://pokemonshowdown.com/
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*
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* This file controls support for DNSBLs. It's optional, so it can be
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* removed entirely safely.
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*
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* DNSBLs are DNS-based blackhole lists, which list IPs known for
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* running proxies, spamming, or other abuse. By default, PS will lock
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* users using these IPs.
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*
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* @license MIT license
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*/
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const BLOCKLISTS = ['sbl.spamhaus.org', 'rbl.efnetrbl.org'];
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var dns = require('dns');
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var dnsblCache = exports.cache = {
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'127.0.0.1': false
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};
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function queryDnsblLoop(ip, callback, reversedIpDot, index) {
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if (index >= BLOCKLISTS.length) {
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// not in any blocklist
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callback(dnsblCache[ip] = false);
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return;
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}
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var blocklist = BLOCKLISTS[index];
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dns.resolve4(reversedIpDot + blocklist, function (err, addresses) {
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if (!err) {
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// blocked
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callback(dnsblCache[ip] = blocklist);
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} else {
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// not blocked, try next blocklist
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queryDnsblLoop(ip, callback, reversedIpDot, index + 1);
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}
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});
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}
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/**
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* Dnsbl.query(ip, callback)
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*
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* Calls callback(blocklist), where blocklist is the blocklist domain
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* if the passed IP is in a blocklist, or boolean false if the IP is
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* not in any blocklist.
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*/
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exports.query = function queryDnsbl(ip, callback) {
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if (ip in dnsblCache) {
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callback(dnsblCache[ip]);
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return;
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}
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var reversedIpDot = ip.split('.').reverse().join('.') + '.';
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queryDnsblLoop(ip, callback, reversedIpDot, 0);
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};
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