Mattermost not working with Greenlight

[Yumash]

It works perfect with single BBB installation, but when Greenlight was installed, there came redirects from URL like

https://bbb/bigbluebutton/api/join?fullName=NAME&meetingID=ID&password=PASS&joinViaHtml5=true&checksum=CHECKSUM

to URL like

https://bbb/b

Also, if i disable this redirect at Nginx,

Error: You did not pass the checksum security check

message appears. So it seems that there's no Greenlight support?

[ffdixon]

Hmm ... installing GreenLight shouldn't affect other API integrations. The key file that Greenlight installs is

$ cat /etc/bigbluebutton/nginx/greenlight-redirect.nginx
location = / {
  return 307 /b;
}

If you move that file and restart nginx, does Mattermost start working again?

[Yumash]

nope, but i have found the way to make it work. I have disabled Greenlight auth, enabled LDAP, and everything magically started work as supposed. I think that it would be great to have more expected behaviour for integration or just a better documentation, because i suppose that there are permissions issues somewhere

[cadavre]

How is Mattermost integration affecting this? Greenlight is not what BBB plugin for Mattermost is launching. Or am I missing smth?

[Yumash]

@cadavre i suppose that if Greenlight is a part (supported part) of BBB, the installation of it should not break the integration MM<->BBB.

The case was that after i installed Greenlight, my integration became broken, that's all. It seems we are missing some documentation for expected behaviour. I think there's permissions(authorization) issues, because Greenlight puts some security to BBB as is.

[cadavre]

Roger @Yumash . The case is I'm using Greenlight too and it didn't broke a thing in MM<->BBB integration via this plugin. Looks like you have some custom config.

Did you used bbb-install.sh and Greenlight via Docker?

[Yumash]

@cadavre all was from the docs. I installed both BBB+Greenlight with bbb-install.sh command.

But before it i have installed only BBB (with bbb-install) - the integration worked perfectly.

After i have installed BBB+GL, integration broked till the special magic i did in #66 (comment)

[eyebank]

So @Yumash I noticed the same thing that when greenlight is installed and i launch BBB with the plug in, the url for greenlight appears. Like: "https://mydomain.org/b" . i'm gonna try to disable greenlight (your method) to see if BBB launches. snapshot first!

[rottaran]

This was driving me almost insane :) The issue is, that the location "/b" in nginx matches everything beginning with b, which can be even more than just /bigbluebutton and /bbb.
I solved it this way:

location ~ (^/b$|^/b/) {
      proxy_pass          http://10.88.0.40:80;
      proxy_set_header    Host              $host;
      proxy_set_header    X-Forwarded-For   $proxy_add_x_forwarded_for;
      proxy_set_header    X-Forwarded-Proto $scheme;
      proxy_http_version  1.1;
}

I have tried to reconfigure greenlight for the path /b/ instead of /b, but then I got bad gateway error.

To explain partially the confusion here, the location matching in nginx depends on the strings and regular expressions that nginx sees. Thus, depending on other locations and the ordering, it will work for some people and not for others.

nginx first searches for the most specific prefix location given by literal strings regardless of the listed order. In the configuration above the only prefix location is “/” and since it matches any request it will be used as a last resort. Then nginx checks locations given by regular expression in the order listed in the configuration file. The first matching expression stops the search and nginx will use this location. If no regular expression matches a request, then nginx uses the most specific prefix location found earlier.
http://nginx.org/en/docs/http/request_processing.html

[eyebank]

So, I resolved my issue. Chrome broke things. I migrated to firefox and can use both front ends BBB Plugin and Greenlight) without issue.

[Joshndroid]

Interesting... Apologies to bring up an old thread but i had set up bigbluebutton from the docs and have the mattermost plugin working... i then thought i would get rid of the demo stuff and install greenlight... once it did that the plugin broke, giving me 404 errors. I tried removing the proxy auto route to /b, which didn't work. I tried further combinations within the plugin; adding the /b to URL, removing it, changing browsers, etc to no avail. Once i put demo back in, removed greenlight, the plugin works and takes be straight to the room created by mattermost. While im not to concerned as i can live with it in this state as its only for home network use, i found this through googling and wish to express i did see this issue. Greenlight was also installed exactly as the docks entail, much like it did for bbb on ubuntu server 18.04. cheers.