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tls: warn on NODE_TLS_REJECT_UNAUTHORIZED = '0' #21900

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Merged
cjihrig merged 1 commit into from
Jul 23, 2018
Merged

tls: warn on NODE_TLS_REJECT_UNAUTHORIZED = '0' #21900

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13 changes: 12 additions & 1 deletion lib/_tls_wrap.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1098,14 +1098,25 @@ function onConnectEnd() {
}
}

let warnOnAllowUnauthorized = true;

// Arguments: [port,] [host,] [options,] [cb]
exports.connect = function connect(...args) {
args = normalizeConnectArgs(args);
var options = args[0];
var cb = args[1];
const allowUnauthorized = process.env.NODE_TLS_REJECT_UNAUTHORIZED === '0';

if (allowUnauthorized && warnOnAllowUnauthorized) {
warnOnAllowUnauthorized = false;
process.emitWarning('Setting the NODE_TLS_REJECT_UNAUTHORIZED ' +
'environment variable to \'0\' makes TLS connections ' +
'and HTTPS requests insecure by disabling ' +
'certificate verification.');
}

var defaults = {
rejectUnauthorized: '0' !== process.env.NODE_TLS_REJECT_UNAUTHORIZED,
rejectUnauthorized: !allowUnauthorized,
ciphers: tls.DEFAULT_CIPHERS,
checkServerIdentity: tls.checkServerIdentity,
minDHSize: 1024
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8 changes: 8 additions & 0 deletions test/parallel/test-https-strict.js
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Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,14 @@ if (!common.hasCrypto)
// disable strict server certificate validation by the client
process.env.NODE_TLS_REJECT_UNAUTHORIZED = '0';

common.expectWarning(
'Warning',
'Setting the NODE_TLS_REJECT_UNAUTHORIZED environment variable to \'0\' ' +
'makes TLS connections and HTTPS requests insecure by disabling ' +
'certificate verification.',
common.noWarnCode
);

const assert = require('assert');
const https = require('https');

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