polleverywhere/ims-lti

Name: ims-lti

Owner: Poll Everywhere

Description: A Ruby library to help implement IMS LTI tool consumers and providers

Forked from: instructure/ims-lti

Created: 2017-04-24 16:05:42.0

Updated: 2017-04-24 16:05:43.0

Pushed: 2017-04-24 16:08:13.0

Homepage:

Size: 385

Language: Ruby

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README

IMS LTI

LTI ruby implementation

Installation

Add this line to your application's Gemfile:

gem 'ims-lti'

And then execute:

$ bundle

Or install it yourself as:

$ gem install lti

Usage

LTI 1.x

Validating Launches

You can use the classes in the IMS::LTI::Models::Messages module to valdiate Launches

For example in a rails app you would do the following

enticator = IMS::LTI::Services::MessageAuthenticator.new(request.url, request.request_parameters, shared_secret)

ck if the signature is valid
rn false unless authenticator.valid_signature?

eck if `params['oauth_nonce']` has already been used

ck if the message is too old
rn false if DateTime.strptime(request.request_parameters['oauth_timestamp'],'%s') < 5.minutes.ago

Contributing

1. Fork it ( http://github.com/instructure/ims-lti/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request