341 lines
10 KiB
JavaScript
341 lines
10 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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const {
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Array,
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ArrayIsArray,
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ObjectDefineProperty,
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ObjectFreeze,
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} = primordials;
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const {
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ERR_TLS_CERT_ALTNAME_INVALID,
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ERR_OUT_OF_RANGE
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} = require('internal/errors').codes;
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const internalUtil = require('internal/util');
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const internalTLS = require('internal/tls');
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internalUtil.assertCrypto();
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const { isArrayBufferView } = require('internal/util/types');
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const net = require('net');
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const { getOptionValue } = require('internal/options');
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const url = require('url');
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const { getRootCertificates, getSSLCiphers } = internalBinding('crypto');
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const { Buffer } = require('buffer');
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const EventEmitter = require('events');
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const { URL } = require('internal/url');
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const DuplexPair = require('internal/streams/duplexpair');
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const { canonicalizeIP } = internalBinding('cares_wrap');
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const _tls_common = require('_tls_common');
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const _tls_wrap = require('_tls_wrap');
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// Allow {CLIENT_RENEG_LIMIT} client-initiated session renegotiations
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// every {CLIENT_RENEG_WINDOW} seconds. An error event is emitted if more
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// renegotiations are seen. The settings are applied to all remote client
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// connections.
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exports.CLIENT_RENEG_LIMIT = 3;
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exports.CLIENT_RENEG_WINDOW = 600;
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exports.DEFAULT_CIPHERS = getOptionValue('--tls-cipher-list');
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exports.DEFAULT_ECDH_CURVE = 'auto';
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if (getOptionValue('--tls-min-v1.0'))
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exports.DEFAULT_MIN_VERSION = 'TLSv1';
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else if (getOptionValue('--tls-min-v1.1'))
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exports.DEFAULT_MIN_VERSION = 'TLSv1.1';
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else if (getOptionValue('--tls-min-v1.2'))
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exports.DEFAULT_MIN_VERSION = 'TLSv1.2';
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else if (getOptionValue('--tls-min-v1.3'))
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exports.DEFAULT_MIN_VERSION = 'TLSv1.3';
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else
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exports.DEFAULT_MIN_VERSION = 'TLSv1.2';
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if (getOptionValue('--tls-max-v1.3'))
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exports.DEFAULT_MAX_VERSION = 'TLSv1.3';
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else if (getOptionValue('--tls-max-v1.2'))
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exports.DEFAULT_MAX_VERSION = 'TLSv1.2';
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else
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exports.DEFAULT_MAX_VERSION = 'TLSv1.3'; // Will depend on node version.
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exports.getCiphers = internalUtil.cachedResult(
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() => internalUtil.filterDuplicateStrings(getSSLCiphers(), true)
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);
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let rootCertificates;
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function cacheRootCertificates() {
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rootCertificates = ObjectFreeze(getRootCertificates());
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}
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ObjectDefineProperty(exports, 'rootCertificates', {
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configurable: false,
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enumerable: true,
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get: () => {
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// Out-of-line caching to promote inlining the getter.
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if (!rootCertificates) cacheRootCertificates();
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return rootCertificates;
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},
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});
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// Convert protocols array into valid OpenSSL protocols list
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// ("\x06spdy/2\x08http/1.1\x08http/1.0")
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function convertProtocols(protocols) {
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const lens = new Array(protocols.length);
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const buff = Buffer.allocUnsafe(protocols.reduce((p, c, i) => {
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const len = Buffer.byteLength(c);
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if (len > 255) {
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throw new ERR_OUT_OF_RANGE('The byte length of the protocol at index ' +
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`${i} exceeds the maximum length.`, '<= 255', len, true);
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}
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lens[i] = len;
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return p + 1 + len;
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}, 0));
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let offset = 0;
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for (let i = 0, c = protocols.length; i < c; i++) {
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buff[offset++] = lens[i];
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buff.write(protocols[i], offset);
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offset += lens[i];
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}
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return buff;
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}
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exports.convertALPNProtocols = function convertALPNProtocols(protocols, out) {
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// If protocols is Array - translate it into buffer
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if (ArrayIsArray(protocols)) {
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out.ALPNProtocols = convertProtocols(protocols);
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} else if (isArrayBufferView(protocols)) {
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// Copy new buffer not to be modified by user.
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out.ALPNProtocols = Buffer.from(protocols);
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}
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};
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function unfqdn(host) {
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return host.replace(/[.]$/, '');
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}
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function splitHost(host) {
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// String#toLowerCase() is locale-sensitive so we use
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// a conservative version that only lowercases A-Z.
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const replacer = (c) => String.fromCharCode(32 + c.charCodeAt(0));
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return unfqdn(host).replace(/[A-Z]/g, replacer).split('.');
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}
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function check(hostParts, pattern, wildcards) {
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// Empty strings, null, undefined, etc. never match.
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if (!pattern)
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return false;
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const patternParts = splitHost(pattern);
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if (hostParts.length !== patternParts.length)
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return false;
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// Pattern has empty components, e.g. "bad..example.com".
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if (patternParts.includes(''))
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return false;
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// RFC 6125 allows IDNA U-labels (Unicode) in names but we have no
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// good way to detect their encoding or normalize them so we simply
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// reject them. Control characters and blanks are rejected as well
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// because nothing good can come from accepting them.
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const isBad = (s) => /[^\u0021-\u007F]/u.test(s);
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if (patternParts.some(isBad))
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return false;
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// Check host parts from right to left first.
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for (let i = hostParts.length - 1; i > 0; i -= 1) {
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if (hostParts[i] !== patternParts[i])
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return false;
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}
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const hostSubdomain = hostParts[0];
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const patternSubdomain = patternParts[0];
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const patternSubdomainParts = patternSubdomain.split('*');
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// Short-circuit when the subdomain does not contain a wildcard.
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// RFC 6125 does not allow wildcard substitution for components
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// containing IDNA A-labels (Punycode) so match those verbatim.
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if (patternSubdomainParts.length === 1 || patternSubdomain.includes('xn--'))
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return hostSubdomain === patternSubdomain;
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if (!wildcards)
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return false;
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// More than one wildcard is always wrong.
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if (patternSubdomainParts.length > 2)
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return false;
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// *.tld wildcards are not allowed.
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if (patternParts.length <= 2)
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return false;
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const [prefix, suffix] = patternSubdomainParts;
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if (prefix.length + suffix.length > hostSubdomain.length)
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return false;
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if (!hostSubdomain.startsWith(prefix))
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return false;
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if (!hostSubdomain.endsWith(suffix))
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return false;
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return true;
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}
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let urlWarningEmitted = false;
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exports.checkServerIdentity = function checkServerIdentity(hostname, cert) {
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const subject = cert.subject;
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const altNames = cert.subjectaltname;
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const dnsNames = [];
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const uriNames = [];
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const ips = [];
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hostname = '' + hostname;
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if (altNames) {
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for (const name of altNames.split(', ')) {
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if (name.startsWith('DNS:')) {
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dnsNames.push(name.slice(4));
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} else if (name.startsWith('URI:')) {
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let uri;
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try {
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uri = new URL(name.slice(4));
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} catch {
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uri = url.parse(name.slice(4));
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if (!urlWarningEmitted && !process.noDeprecation) {
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urlWarningEmitted = true;
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process.emitWarning(
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`The URI ${name.slice(4)} found in cert.subjectaltname ` +
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'is not a valid URI, and is supported in the tls module ' +
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'solely for compatibility.',
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'DeprecationWarning', 'DEP0109');
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}
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}
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uriNames.push(uri.hostname); // TODO(bnoordhuis) Also use scheme.
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} else if (name.startsWith('IP Address:')) {
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ips.push(canonicalizeIP(name.slice(11)));
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}
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}
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}
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let valid = false;
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let reason = 'Unknown reason';
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const hasAltNames =
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dnsNames.length > 0 || ips.length > 0 || uriNames.length > 0;
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hostname = unfqdn(hostname); // Remove trailing dot for error messages.
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if (net.isIP(hostname)) {
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valid = ips.includes(canonicalizeIP(hostname));
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if (!valid)
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reason = `IP: ${hostname} is not in the cert's list: ${ips.join(', ')}`;
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// TODO(bnoordhuis) Also check URI SANs that are IP addresses.
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} else if (hasAltNames || subject) {
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const hostParts = splitHost(hostname);
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const wildcard = (pattern) => check(hostParts, pattern, true);
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if (hasAltNames) {
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const noWildcard = (pattern) => check(hostParts, pattern, false);
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valid = dnsNames.some(wildcard) || uriNames.some(noWildcard);
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if (!valid)
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reason =
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`Host: ${hostname}. is not in the cert's altnames: ${altNames}`;
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} else {
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// Match against Common Name only if no supported identifiers exist.
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const cn = subject.CN;
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if (ArrayIsArray(cn))
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valid = cn.some(wildcard);
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else if (cn)
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valid = wildcard(cn);
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if (!valid)
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reason = `Host: ${hostname}. is not cert's CN: ${cn}`;
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}
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} else {
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reason = 'Cert is empty';
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}
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if (!valid) {
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return new ERR_TLS_CERT_ALTNAME_INVALID(reason, hostname, cert);
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}
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};
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class SecurePair extends EventEmitter {
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constructor(secureContext = exports.createSecureContext(),
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isServer = false,
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requestCert = !isServer,
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rejectUnauthorized = false,
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options = {}) {
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super();
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const { socket1, socket2 } = new DuplexPair();
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this.server = options.server;
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this.credentials = secureContext;
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this.encrypted = socket1;
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this.cleartext = new exports.TLSSocket(socket2, {
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secureContext,
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isServer,
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requestCert,
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rejectUnauthorized,
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...options
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});
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this.cleartext.once('secure', () => this.emit('secure'));
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}
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destroy() {
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this.cleartext.destroy();
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this.encrypted.destroy();
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}
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}
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exports.parseCertString = internalUtil.deprecate(
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internalTLS.parseCertString,
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'tls.parseCertString() is deprecated. ' +
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'Please use querystring.parse() instead.',
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'DEP0076');
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exports.createSecureContext = _tls_common.createSecureContext;
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exports.SecureContext = _tls_common.SecureContext;
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exports.TLSSocket = _tls_wrap.TLSSocket;
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exports.Server = _tls_wrap.Server;
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exports.createServer = _tls_wrap.createServer;
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exports.connect = _tls_wrap.connect;
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exports.createSecurePair = internalUtil.deprecate(
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function createSecurePair(...args) {
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return new SecurePair(...args);
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},
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'tls.createSecurePair() is deprecated. Please use ' +
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'tls.TLSSocket instead.', 'DEP0064');
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