iframe allow set document.domain

[sasakura-sora]

Rocket.Chat Version: 0.56
Running Instances: 2+
DB Replicaset OpLog: enabled
Node Version: 4.5.0

This requires RC to be running in an iFrame. The URL structure looks like this:
Main page: www.example.com
RC iFrame: chat.example.com
iFrame domain set onload to value: example.com

In Administration -> Layout -> Custom Scripts:
Custom Script for logged in users:
document.domain = "example.com;"

Expected behaviour:
Able to call functions on window.parent.

Actual behaviour:
Channel message window is blank in IE & Edge.
Change to a different channel or Direct Message from the left menu and the main window remains blank.
Same behaviour when selecting any of the Administration options.

F12 console has no warnings or errors but has the following info:
Exception in defer callback: TypeError: Unable to set property 'scrollTop' of undefined or null reference at Anonymous function (https://chat.example.com/11e90e0d8a9fb6c11c233854bce945d7cee0b5c9.js?meteor_js_resource=true:246:28361) at e.Computation.prototype._compute (https://chat.example.com/11e90e0d8a9fb6c11c233854bce945d7cee0b5c9.js?meteor_js_resource=true:84:2301) at e.Computation (https://chat.example.com/11e90e0d8a9fb6c11c233854bce945d7cee0b5c9.js?meteor_js_resource=true:84:1263) at e.autorun (https://chat.example.com/11e90e0d8a9fb6c11c233854bce945d7cee0b5c9.js?meteor_js_resource=true:84:4209) at Anonymous function (https://chat.example.com/11e90e0d8a9fb6c11c233854bce945d7cee0b5c9.js?meteor_js_resource=true:246:27258) at withValue (https://chat.example.com/11e90e0d8a9fb6c11c233854bce945d7cee0b5c9.js?meteor_js_resource=true:3:7157) at Anonymous function (https://chat.example.com/11e90e0d8a9fb6c11c233854bce945d7cee0b5c9.js?meteor_js_resource=true:3:2919) at Anonymous function (https://chat.example.com/11e90e0d8a9fb6c11c233854bce945d7cee0b5c9.js?meteor_js_resource=true:3:7413) 11e90e0d8a9fb6c11c233854bce945d7cee0b5c9.js (3,5837)
Ideally there would be a startup option to set the document.domain which can be set by RC during startup.

[geekgonecrazy]

Just so I understand the main ask here is to allow setting this for use in iframe right? Not to help solve your custom script.

[sasakura-sora]

@geekgonecrazy yes a setting that instructs RC to set the document.domain.

It'd be nice to get some more error logging or protection from custom scripts breaking but that's a separate issue.

[geekgonecrazy]

@sampaiodiego I think you are most familiar with the iframe stuff. Is it possible to configure to allow them to set a document.domain ?

[sampaiodiego]

@geekgonecrazy well, we can create a setting for that. but I'm not sure how it works.

@sasakura-sora if you add it (the document.domain) at the top of your custom script, does it work as expected?

[sasakura-sora]

@sampaiodiego yes it works as expected in Chrome. The iframe domain matches the outer page domain and we can call functions set on window.parent

[sampaiodiego]

cool.. thanks @sasakura-sora .. so it's a matter of creating the setting..

[c0dzilla]

Hi! I'd like to take up this issue.

[abhishek71994]

I'd like to work on this, anyone active?