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author | RaindropsSys <raindrops@equestria.dev> | 2023-11-17 23:25:29 +0100 |
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committer | RaindropsSys <raindrops@equestria.dev> | 2023-11-17 23:25:29 +0100 |
commit | 953ddd82e48dd206cef5ac94456549aed13b3ad5 (patch) | |
tree | 8f003106ee2e7f422e5a22d2ee04d0db302e66c0 /includes/external/addressbook/node_modules/cacheable-lookup/source | |
parent | 62a9199846b0c07c03218703b33e8385764f42d9 (diff) | |
download | pluralconnect-953ddd82e48dd206cef5ac94456549aed13b3ad5.tar.gz pluralconnect-953ddd82e48dd206cef5ac94456549aed13b3ad5.tar.bz2 pluralconnect-953ddd82e48dd206cef5ac94456549aed13b3ad5.zip |
Updated 30 files and deleted 2976 files (automated)
Diffstat (limited to 'includes/external/addressbook/node_modules/cacheable-lookup/source')
-rw-r--r-- | includes/external/addressbook/node_modules/cacheable-lookup/source/index.js | 452 |
1 files changed, 0 insertions, 452 deletions
diff --git a/includes/external/addressbook/node_modules/cacheable-lookup/source/index.js b/includes/external/addressbook/node_modules/cacheable-lookup/source/index.js deleted file mode 100644 index 2accc60..0000000 --- a/includes/external/addressbook/node_modules/cacheable-lookup/source/index.js +++ /dev/null @@ -1,452 +0,0 @@ -import { - V4MAPPED, - ADDRCONFIG, - ALL, - promises as dnsPromises, - lookup as dnsLookup -} from 'node:dns'; -import {promisify} from 'node:util'; -import os from 'node:os'; - -const {Resolver: AsyncResolver} = dnsPromises; - -const kCacheableLookupCreateConnection = Symbol('cacheableLookupCreateConnection'); -const kCacheableLookupInstance = Symbol('cacheableLookupInstance'); -const kExpires = Symbol('expires'); - -const supportsALL = typeof ALL === 'number'; - -const verifyAgent = agent => { - if (!(agent && typeof agent.createConnection === 'function')) { - throw new Error('Expected an Agent instance as the first argument'); - } -}; - -const map4to6 = entries => { - for (const entry of entries) { - if (entry.family === 6) { - continue; - } - - entry.address = `::ffff:${entry.address}`; - entry.family = 6; - } -}; - -const getIfaceInfo = () => { - let has4 = false; - let has6 = false; - - for (const device of Object.values(os.networkInterfaces())) { - for (const iface of device) { - if (iface.internal) { - continue; - } - - if (iface.family === 'IPv6') { - has6 = true; - } else { - has4 = true; - } - - if (has4 && has6) { - return {has4, has6}; - } - } - } - - return {has4, has6}; -}; - -const isIterable = map => { - return Symbol.iterator in map; -}; - -const ignoreNoResultErrors = dnsPromise => { - return dnsPromise.catch(error => { - if ( - error.code === 'ENODATA' || - error.code === 'ENOTFOUND' || - error.code === 'ENOENT' // Windows: name exists, but not this record type - ) { - return []; - } - - throw error; - }); -}; - -const ttl = {ttl: true}; -const all = {all: true}; -const all4 = {all: true, family: 4}; -const all6 = {all: true, family: 6}; - -export default class CacheableLookup { - constructor({ - cache = new Map(), - maxTtl = Infinity, - fallbackDuration = 3600, - errorTtl = 0.15, - resolver = new AsyncResolver(), - lookup = dnsLookup - } = {}) { - this.maxTtl = maxTtl; - this.errorTtl = errorTtl; - - this._cache = cache; - this._resolver = resolver; - this._dnsLookup = lookup && promisify(lookup); - this.stats = { - cache: 0, - query: 0 - }; - - if (this._resolver instanceof AsyncResolver) { - this._resolve4 = this._resolver.resolve4.bind(this._resolver); - this._resolve6 = this._resolver.resolve6.bind(this._resolver); - } else { - this._resolve4 = promisify(this._resolver.resolve4.bind(this._resolver)); - this._resolve6 = promisify(this._resolver.resolve6.bind(this._resolver)); - } - - this._iface = getIfaceInfo(); - - this._pending = {}; - this._nextRemovalTime = false; - this._hostnamesToFallback = new Set(); - - this.fallbackDuration = fallbackDuration; - - if (fallbackDuration > 0) { - const interval = setInterval(() => { - this._hostnamesToFallback.clear(); - }, fallbackDuration * 1000); - - /* istanbul ignore next: There is no `interval.unref()` when running inside an Electron renderer */ - if (interval.unref) { - interval.unref(); - } - - this._fallbackInterval = interval; - } - - this.lookup = this.lookup.bind(this); - this.lookupAsync = this.lookupAsync.bind(this); - } - - set servers(servers) { - this.clear(); - - this._resolver.setServers(servers); - } - - get servers() { - return this._resolver.getServers(); - } - - lookup(hostname, options, callback) { - if (typeof options === 'function') { - callback = options; - options = {}; - } else if (typeof options === 'number') { - options = { - family: options - }; - } - - if (!callback) { - throw new Error('Callback must be a function.'); - } - - // eslint-disable-next-line promise/prefer-await-to-then - this.lookupAsync(hostname, options).then(result => { - if (options.all) { - callback(null, result); - } else { - callback(null, result.address, result.family, result.expires, result.ttl, result.source); - } - }, callback); - } - - async lookupAsync(hostname, options = {}) { - if (typeof options === 'number') { - options = { - family: options - }; - } - - let cached = await this.query(hostname); - - if (options.family === 6) { - const filtered = cached.filter(entry => entry.family === 6); - - if (options.hints & V4MAPPED) { - if ((supportsALL && options.hints & ALL) || filtered.length === 0) { - map4to6(cached); - } else { - cached = filtered; - } - } else { - cached = filtered; - } - } else if (options.family === 4) { - cached = cached.filter(entry => entry.family === 4); - } - - if (options.hints & ADDRCONFIG) { - const {_iface} = this; - cached = cached.filter(entry => entry.family === 6 ? _iface.has6 : _iface.has4); - } - - if (cached.length === 0) { - const error = new Error(`cacheableLookup ENOTFOUND ${hostname}`); - error.code = 'ENOTFOUND'; - error.hostname = hostname; - - throw error; - } - - if (options.all) { - return cached; - } - - return cached[0]; - } - - async query(hostname) { - let source = 'cache'; - let cached = await this._cache.get(hostname); - - if (cached) { - this.stats.cache++; - } - - if (!cached) { - const pending = this._pending[hostname]; - if (pending) { - this.stats.cache++; - cached = await pending; - } else { - source = 'query'; - const newPromise = this.queryAndCache(hostname); - this._pending[hostname] = newPromise; - this.stats.query++; - try { - cached = await newPromise; - } finally { - delete this._pending[hostname]; - } - } - } - - cached = cached.map(entry => { - return {...entry, source}; - }); - - return cached; - } - - async _resolve(hostname) { - // ANY is unsafe as it doesn't trigger new queries in the underlying server. - const [A, AAAA] = await Promise.all([ - ignoreNoResultErrors(this._resolve4(hostname, ttl)), - ignoreNoResultErrors(this._resolve6(hostname, ttl)) - ]); - - let aTtl = 0; - let aaaaTtl = 0; - let cacheTtl = 0; - - const now = Date.now(); - - for (const entry of A) { - entry.family = 4; - entry.expires = now + (entry.ttl * 1000); - - aTtl = Math.max(aTtl, entry.ttl); - } - - for (const entry of AAAA) { - entry.family = 6; - entry.expires = now + (entry.ttl * 1000); - - aaaaTtl = Math.max(aaaaTtl, entry.ttl); - } - - if (A.length > 0) { - if (AAAA.length > 0) { - cacheTtl = Math.min(aTtl, aaaaTtl); - } else { - cacheTtl = aTtl; - } - } else { - cacheTtl = aaaaTtl; - } - - return { - entries: [ - ...A, - ...AAAA - ], - cacheTtl - }; - } - - async _lookup(hostname) { - try { - const [A, AAAA] = await Promise.all([ - // Passing {all: true} doesn't return all IPv4 and IPv6 entries. - // See https://github.com/szmarczak/cacheable-lookup/issues/42 - ignoreNoResultErrors(this._dnsLookup(hostname, all4)), - ignoreNoResultErrors(this._dnsLookup(hostname, all6)) - ]); - - return { - entries: [ - ...A, - ...AAAA - ], - cacheTtl: 0 - }; - } catch { - return { - entries: [], - cacheTtl: 0 - }; - } - } - - async _set(hostname, data, cacheTtl) { - if (this.maxTtl > 0 && cacheTtl > 0) { - cacheTtl = Math.min(cacheTtl, this.maxTtl) * 1000; - data[kExpires] = Date.now() + cacheTtl; - - try { - await this._cache.set(hostname, data, cacheTtl); - } catch (error) { - this.lookupAsync = async () => { - const cacheError = new Error('Cache Error. Please recreate the CacheableLookup instance.'); - cacheError.cause = error; - - throw cacheError; - }; - } - - if (isIterable(this._cache)) { - this._tick(cacheTtl); - } - } - } - - async queryAndCache(hostname) { - if (this._hostnamesToFallback.has(hostname)) { - return this._dnsLookup(hostname, all); - } - - let query = await this._resolve(hostname); - - if (query.entries.length === 0 && this._dnsLookup) { - query = await this._lookup(hostname); - - if (query.entries.length !== 0 && this.fallbackDuration > 0) { - // Use `dns.lookup(...)` for that particular hostname - this._hostnamesToFallback.add(hostname); - } - } - - const cacheTtl = query.entries.length === 0 ? this.errorTtl : query.cacheTtl; - await this._set(hostname, query.entries, cacheTtl); - - return query.entries; - } - - _tick(ms) { - const nextRemovalTime = this._nextRemovalTime; - - if (!nextRemovalTime || ms < nextRemovalTime) { - clearTimeout(this._removalTimeout); - - this._nextRemovalTime = ms; - - this._removalTimeout = setTimeout(() => { - this._nextRemovalTime = false; - - let nextExpiry = Infinity; - - const now = Date.now(); - - for (const [hostname, entries] of this._cache) { - const expires = entries[kExpires]; - - if (now >= expires) { - this._cache.delete(hostname); - } else if (expires < nextExpiry) { - nextExpiry = expires; - } - } - - if (nextExpiry !== Infinity) { - this._tick(nextExpiry - now); - } - }, ms); - - /* istanbul ignore next: There is no `timeout.unref()` when running inside an Electron renderer */ - if (this._removalTimeout.unref) { - this._removalTimeout.unref(); - } - } - } - - install(agent) { - verifyAgent(agent); - - if (kCacheableLookupCreateConnection in agent) { - throw new Error('CacheableLookup has been already installed'); - } - - agent[kCacheableLookupCreateConnection] = agent.createConnection; - agent[kCacheableLookupInstance] = this; - - agent.createConnection = (options, callback) => { - if (!('lookup' in options)) { - options.lookup = this.lookup; - } - - return agent[kCacheableLookupCreateConnection](options, callback); - }; - } - - uninstall(agent) { - verifyAgent(agent); - - if (agent[kCacheableLookupCreateConnection]) { - if (agent[kCacheableLookupInstance] !== this) { - throw new Error('The agent is not owned by this CacheableLookup instance'); - } - - agent.createConnection = agent[kCacheableLookupCreateConnection]; - - delete agent[kCacheableLookupCreateConnection]; - delete agent[kCacheableLookupInstance]; - } - } - - updateInterfaceInfo() { - const {_iface} = this; - - this._iface = getIfaceInfo(); - - if ((_iface.has4 && !this._iface.has4) || (_iface.has6 && !this._iface.has6)) { - this._cache.clear(); - } - } - - clear(hostname) { - if (hostname) { - this._cache.delete(hostname); - return; - } - - this._cache.clear(); - } -} |