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check origin header for websocket connection #1603

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merged 3 commits into from Dec 21, 2018
Merged

check origin header for websocket connection #1603

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f18e5ad
check origin header for websocket connection
sokra Jul 24, 2018
fe8970f
Merge branch 'master' into bugfix/origin-header
sokra Dec 21, 2018
7b9c846
use single quotes
sokra Dec 21, 2018
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10 changes: 6 additions & 4 deletions lib/Server.js
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Expand Up @@ -630,14 +630,16 @@ Server.prototype.setContentHeaders = function (req, res, next) {
next();
};

Server.prototype.checkHost = function (headers) {
Server.prototype.checkHost = function (headers, headerToCheck) {
// allow user to opt-out this security check, at own risk
if (this.disableHostCheck) {
return true;
}

if (!headerToCheck) headerToCheck = 'host';
// get the Host header and extract hostname
// we don't care about port not matching
const hostHeader = headers.host;
const hostHeader = headers[headerToCheck];

if (!hostHeader) {
return false;
Expand Down Expand Up @@ -725,8 +727,8 @@ Server.prototype.listen = function (port, hostname, fn) {
return;
}

if (!this.checkHost(connection.headers)) {
this.sockWrite([ connection ], 'error', 'Invalid Host header');
if (!this.checkHost(connection.headers) || !this.checkHost(connection.headers, 'origin')) {
this.sockWrite([ connection ], 'error', 'Invalid Host/Origin header');

connection.close();

Expand Down