Moodle in English: Installing LTi plugin on UNIX

Installing LTi plugin on UNIX

by Nigel Hoath - Monday, July 25, 2016, 9:58 PM

Hi all

I installed the LTi provider plugin on Windows and had great success. Now I have installed the same on a Centos m/c.

All seems ok and I can generate a secret and url with id.

Haven't yet set up OAuth so went to moodle/local looking for the ltiprovider directory structure I had seen on the Windows install. However it is not present. Thus I cannot edit ./local/ltiprovider/ims-blti/OAuth.php

On Unix (Centos):

[E2Admin@MoodleLMS local]$ ls
readme.txt upgrade.txt

On Windows:

HP@NigelsHP /cygdrive/c/Moodle/MoodleWindowsInstaller-latest-31/server/moodle/local
$ ls
ltiprovider readme.txt upgrade.txt

I've set debug to max but no messages, warnings or errors during installation but as I say it generates secrets and the id for the url ok.

Anyone have any thoughts why this directory structure is missing on Centos but present on Windows?

Or if you have a Unix install if you also do not have this structure?

Cheers and tx for any thoughts

Re: Installing LTi plugin on UNIX

by Ken Task - Tuesday, July 26, 2016, 1:41 AM

Did you manually install on the Linux server?

If it works on Windows in moodlecode/local/ltiprovider then IF ltiprovider is in the same location on Linux it should work.

What version of Moodles ... on Windows ... on Linux?

Thought in the highest version of Moodle (any platfrom), litprovider was now part of core code.

'spirit of sharing', Ken

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Re: Installing LTi plugin on UNIX

by Ken Task - Tuesday, July 26, 2016, 2:11 AM

Just checked a 3.1.1+ (Build: 20160714) and LTI Provider is built in but not as a separate mod or local ... but in authentications and enrollments, etc.. (ie, other areas). The Windows platform install where you have ltiprovider installed in local was/is a forerunner to the stuff in 3.1.1+ and not part of core. There's a diff.

Use the search box below the Site Admin menu for "lti" and you'll see the various areas where something either needs to be turned on or have some setting set.

'spirit of sharing', Ken

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Re: Installing LTi plugin on UNIX

by Nigel Hoath - Tuesday, July 26, 2016, 4:10 AM

Ken first as always much appreciate your time.

The Windows and Centos both have 3.1. We used https://moodle.org/plugins/pluginversions.php?plugin=local_ltiprovider to get the latest LTi plugin download for Moodle 3.1 And using site Administration/Plug Ins we let moodle handle the install which it did without complaint.

LTi apeared in the menus and we could generate secrets and ids. All quite normal.

Beyond not having that local directory structure and thus no OAuth.php in local I do have

mod/lti/OAuth.php
enrol/lti/ims-blti/OAuth.php

On windows with LTi installed in the same way I have:

enrol/lti/ims-blti/OAuth.php
local/ltiprovider/ims-blti/OAuth.php
mod/lti/OAuth.php

I see "In Moodle 3.1 onwards, the Publish as LTI tool enrolment plugin and LTI authentication plugin allow remote users ......................" This presumably is the LTi move to core that you mentioned.

So I guess we start again on those and see if they work. That still leaves which OAuth is doing the validation but I guess by trial and error we will get there.

Seems odd that moodle.org offer a download for Moodle 3.1 that is now presumably obsolete but I guess that is free software for you

Tx Ken at least with your help we are back on the right road.

Of course if anyone knows which OAuth.php is actually doing the validation it would be great to know.

Cheers

Nigel

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Re: Installing LTi plugin on UNIX

by Ken Task - Tuesday, July 26, 2016, 7:28 AM

Just downloaded the lastest LTIProvider plugin from downloads and unzipped.

In the un-zipped archive there is a 'README.mediawiki' file. It is ASCII text you could open it on Windows by changing the filename extension to .txt and open with NotePad.

Here's a clip from that file:

== How it works ==

=== User authentication ===

* Users are created automatically in their first access to the system.
* Users are created with a hashed username and also with an auth method that disable direct login to Moodle.
* Users are allways enrolled in the course where the activities are.

You can choose which role has the Learner and the Teacher from the remote system.

There is also settings for setting Users profile default values (email visible, etc...)

If you are going to have courses with local and remote users enrolled, I recommend you to create these new roles:

* External teacher
* External student

The 3.1.x built in docs is here:

https://docs.moodle.org/31/en/External_tool_settings

I've not tested/explored either to the max, but could be the addon plugin offers something different from the builtin.

'spirit of sharing', Ken

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Re: Installing LTi plugin on UNIX

by Nigel Hoath - Tuesday, July 26, 2016, 1:24 PM

Carry on like this Ken and we will be offering you a job. We are based in Cadiz in Spain and London, UK. Would that suit you?

For our current project we only need student/user roles. The attraction of LTi, beyond it being a documented standard, is the anonamous login (hashed virtual username). In this case we only have single activity SCORMs so can keep the rest very simple. Our clients biggest concern is security and LTi allows us to give close to 100% security despite the Moodle being cloud hosted.

Anyway over night we set up the core stuff. It appears to work ok based on limited testing. But does have differences from the original plugin. Nothing drastic so hopefully we can be back on track tomorrow.

Cheers Nigel

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LTI and Moodle

Installing LTi plugin on UNIX