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return 482 loop detected if call to a sip uri would loop back to us (#173)

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* return 482 loop detected if call to a sip uri would loop back to us

* this pr fixes #172

* typo

* wip

* wip
This commit is contained in:
Dave Horton
2025-03-20 11:25:08 -04:00
committed by GitHub
parent 9cb75a0b6b
commit 3a467921a6
1 changed files with 15 additions and 2 deletions
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17
lib/middleware.js
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@@ -260,9 +260,22 @@ module.exports = (srf, logger, redisClient) => {
else if ('sip' === desiredRouting) {
// call that needs to be forwarded to a sip endpoint
logger.info(`forwarding call to sip endpoint ${req.uri}`);
// check if the domain is one of ours
if (process.env.JAMBONES_LOCAL_SIP_DOMAINS) {
const allowedDomains = process.env.JAMBONES_LOCAL_SIP_DOMAINS.split(',');
const domain = uri.host;
const isLoop = allowedDomains.some((allowed) =>
domain === allowed.trim() || domain.endsWith(`.${allowed.trim()}`)
);
if (isLoop) {
logger.info({ host: domain }, `returning 482 Loop Detected for attempt to send to: ${req.uri}`);
res.send(482, 'Loop Detected');
return req.srf.endSession(req);
}
}
req.locals.target = 'forward';
}
else if ('phone' === desiredRouting) {
} else if ('phone' === desiredRouting) {
debug('sending call to LCR');
req.locals.target = 'lcr';
}