Initial version.

Gemfile

+source 'https://rubygems.org'
+
+# Declare your gem's dependencies in dtu_core.gemspec.
+# Bundler will treat runtime dependencies like base dependencies, and
+# development dependencies will be added by default to the :development group.
+gemspec
+
+# Declare any dependencies that are still in development here instead of in
+# your gemspec. These might include edge Rails or gems from your path or
+# Git. Remember to move these dependencies to your gemspec before releasing
+# your gem to rubygems.org.
+
+# To use a debugger
+# gem 'byebug', group: [:development, :test]
+
+gem 'rubycas-client', '~> 2.3.8', :git => 'https://github.com/rubycas/rubycas-client'
+
+gem 'dtu-auth', :path => './dtu-auth'
+
+gem 'dtu-file-management', :path => './dtu-file-management'

Gemfile.lock

+GIT
+  remote: https://github.com/rubycas/rubycas-client
+  revision: 195a4b70333029be474b0ac70efdc85bd4288861
+  specs:
+    rubycas-client (2.3.10.rc1)
+      activesupport
+
+PATH
+  remote: .
+  specs:
+    dtu-core (0.0.1)
+      dtu-auth
+      dtu-file-management
+      rails (~> 4.2.5)
+
+PATH
+  remote: ./dtu-auth
+  specs:
+    dtu-auth (0.0.0)
+
+PATH
+  remote: ./dtu-file-management
+  specs:
+    dtu-file-management (0.0.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    actionmailer (4.2.7)
+      actionpack (= 4.2.7)
+      actionview (= 4.2.7)
+      activejob (= 4.2.7)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+    actionpack (4.2.7)
+      actionview (= 4.2.7)
+      activesupport (= 4.2.7)
+      rack (~> 1.6)
+      rack-test (~> 0.6.2)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (4.2.7)
+      activesupport (= 4.2.7)
+      builder (~> 3.1)
+      erubis (~> 2.7.0)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    activejob (4.2.7)
+      activesupport (= 4.2.7)
+      globalid (>= 0.3.0)
+    activemodel (4.2.7)
+      activesupport (= 4.2.7)
+      builder (~> 3.1)
+    activerecord (4.2.7)
+      activemodel (= 4.2.7)
+      activesupport (= 4.2.7)
+      arel (~> 6.0)
+    activesupport (4.2.7)
+      i18n (~> 0.7)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    arel (6.0.3)
+    builder (3.2.2)
+    concurrent-ruby (1.0.2)
+    erubis (2.7.0)
+    globalid (0.3.7)
+      activesupport (>= 4.1.0)
+    i18n (0.7.0)
+    json (1.8.3)
+    loofah (2.0.3)
+      nokogiri (>= 1.5.9)
+    mail (2.6.4)
+      mime-types (>= 1.16, < 4)
+    mime-types (3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2016.0521)
+    mini_portile2 (2.1.0)
+    minitest (5.9.0)
+    nokogiri (1.6.8)
+      mini_portile2 (~> 2.1.0)
+      pkg-config (~> 1.1.7)
+    pkg-config (1.1.7)
+    rack (1.6.4)
+    rack-test (0.6.3)
+      rack (>= 1.0)
+    rails (4.2.7)
+      actionmailer (= 4.2.7)
+      actionpack (= 4.2.7)
+      actionview (= 4.2.7)
+      activejob (= 4.2.7)
+      activemodel (= 4.2.7)
+      activerecord (= 4.2.7)
+      activesupport (= 4.2.7)
+      bundler (>= 1.3.0, < 2.0)
+      railties (= 4.2.7)
+      sprockets-rails
+    rails-deprecated_sanitizer (1.0.3)
+      activesupport (>= 4.2.0.alpha)
+    rails-dom-testing (1.0.7)
+      activesupport (>= 4.2.0.beta, < 5.0)
+      nokogiri (~> 1.6.0)
+      rails-deprecated_sanitizer (>= 1.0.1)
+    rails-html-sanitizer (1.0.3)
+      loofah (~> 2.0)
+    railties (4.2.7)
+      actionpack (= 4.2.7)
+      activesupport (= 4.2.7)
+      rake (>= 0.8.7)
+      thor (>= 0.18.1, < 2.0)
+    rake (11.2.2)
+    sprockets (3.7.0)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (3.1.1)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
+    thor (0.19.1)
+    thread_safe (0.3.5)
+    tzinfo (1.2.2)
+      thread_safe (~> 0.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  dtu-auth!
+  dtu-core!
+  dtu-file-management!
+  rubycas-client (~> 2.3.8)!
+
+BUNDLED WITH
+   1.10.6

MIT-LICENSE

+Copyright 2016 Iain Bryson
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.rdoc

+= DtuCore
+
+This project rocks and uses MIT-LICENSE.
\ No newline at end of file

Rakefile

+begin
+  require 'bundler/setup'
+rescue LoadError
+  puts 'You must `gem install bundler` and `bundle install` to run rake tasks'
+end
+
+require 'rdoc/task'
+
+RDoc::Task.new(:rdoc) do |rdoc|
+  rdoc.rdoc_dir = 'rdoc'
+  rdoc.title    = 'DtuCore'
+  rdoc.options << '--line-numbers'
+  rdoc.rdoc_files.include('README.rdoc')
+  rdoc.rdoc_files.include('lib/**/*.rb')
+end
+
+APP_RAKEFILE = File.expand_path("../test/dummy/Rakefile", __FILE__)
+load 'rails/tasks/engine.rake'
+
+
+load 'rails/tasks/statistics.rake'
+
+
+
+Bundler::GemHelper.install_tasks
+
+require 'rake/testtask'
+
+Rake::TestTask.new(:test) do |t|
+  t.libs << 'lib'
+  t.libs << 'test'
+  t.pattern = 'test/**/*_test.rb'
+  t.verbose = false
+end
+
+
+task default: :test

app/assets/javascripts/dtu_core/application.js

+// This is a manifest file that'll be compiled into application.js, which will include all the files
+// listed below.
+//
+// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
+// or any plugin's vendor/assets/javascripts directory can be referenced here using a relative path.
+//
+// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
+// compiled file.
+//
+// Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
+// about supported directives.
+//
+//= require_tree .

app/assets/stylesheets/dtu_core/application.css

+/*
+ * This is a manifest file that'll be compiled into application.css, which will include all the files
+ * listed below.
+ *
+ * Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets,
+ * or any plugin's vendor/assets/stylesheets directory can be referenced here using a relative path.
+ *
+ * You're free to add application-wide styles to this file and they'll appear at the bottom of the
+ * compiled file so the styles you add here take precedence over styles defined in any styles
+ * defined in the other CSS/SCSS files in this directory. It is generally better to create a new
+ * file per style scope.
+ *
+ *= require_tree .
+ *= require_self
+ */

app/controllers/dtu_core/application_controller.rb

+module DtuCore
+  class ApplicationController < ActionController::Base
+    include DtuCore::SessionsHelper
+  end
+end

app/controllers/dtu_core/sessions_controller.rb

+class DtuCore::SessionsController < DtuCore::ApplicationController
+
+  skip_before_filter :require_login
+
+  def new
+  end
+
+  def create
+    #user = User.find_by(email: params[:session][:email].downcase)
+    user = params[:session][:username].downcase
+    user_info = DTUAuth::AuthorizationManager.find_user(user)
+    if user_info # && user.authenticate(params[:session][:password])
+
+      logger.info "User #{user_info.ai} logged in successfully."
+      log_in user_info
+      redirect_to '/home'
+    else
+      logger.info "User #{user} failed to log in."
+      flash.now[:error] = 'Invalid email/password combination'
+      render 'new'
+    end
+  end
+
+  def destroy
+    log_out
+    CASClient::Frameworks::Rails::Filter.logout(self) if Rails.env.production?
+    redirect_to '/' if !Rails.env.production?
+  end
+end

app/helpers/dtu_core/application_helper.rb

+module DtuCore
+  module ApplicationHelper
+  end
+end

app/helpers/dtu_core/sessions_helper.rb

+module DtuCore::SessionsHelper
+
+  # Logs in the given user.
+  def log_in(user_info)
+    @current_user = user_info
+    session[:user_id] = user_info._id
+  end
+
+  # Returns the current logged-in user (if any).
+  def current_user
+    @current_user ||= DTUAuth::AuthorizationManager.find_user(current_user_id)
+  end
+
+  def current_user_id
+    return session[:cas_user] if Rails.env.production?
+    return session[:user_id] if !Rails.env.production?
+  end
+  # Returns true if the user is logged in, false otherwise.
+  def logged_in?
+    !current_user.nil?
+  end
+
+  def log_out
+    session.delete(:user_id)
+    @current_user = nil
+  end
+
+  def is_admin(course_id)
+    #Rails.logger.info(roles_for_course(course_id))
+    #Rails.logger.info "RESULT #{roles_for_course(course_id).include?('administrator')}"
+    roles_for_course(course_id).include?('administrator')
+  end
+
+  def roles_for_course(course_id)
+    Rails.logger.debug "checking admin status for #{current_user_id} in #{course_id}"
+    groups_for_user = DTUAuth::AuthorizationManager.instance.user_roles[current_user_id]
+    return [] unless groups_for_user
+    groups = groups_for_user[course_id]
+    groups ? groups.map{ |g,k| k[0].acl } : []
+  end
+
+  def current_user_roles_for_group(course_id, group_name)
+    Group.where({ :course_id => course_id, :user_id => current_user_id, :name => group_name}).map{ |g| g.acl }
+  end
+
+  def current_user_courses_for_acl(acl)
+    groups_for_user = DTUAuth::AuthorizationManager.instance.user_roles[current_user_id]
+    return [] unless groups_for_user
+    groups = groups_for_user.select{ |course, group_info| group_info.values.map{ |roles| roles.map(&:acl).include? acl } }
+
+    groups.map{ |course, group_info| course }
+  end
+
+end

app/views/dtu_core/sessions/new.html.erb

+<% provide(:title, "Log in") %>
+<div class="row">
+    <div class="col-md-6 col-md-offset-3">
+        <h1>Log in</h1>
+        <%= form_for(:session, url: login_path) do |f| %>
+            <div class="form-group">
+                <%= f.label :username %>
+                    <%= f.text_field :username, class: 'form-control' %>
+            </div>
+            <div class="form-group">
+                <%= f.label :password %>
+                    <%= f.password_field :password, class: 'form-control' %>
+            </div>
+            <div class="form-group">
+                <%= f.submit "Log in", class: "btn btn-primary" %>
+            </div>
+        <% end %>
+    </div>
+</div>

app/views/layouts/dtu_core/application.html.erb

+<!DOCTYPE html>
+<html>
+<head>
+  <title>DtuCore</title>
+  <%= stylesheet_link_tag    "dtu_core/application", media: "all" %>
+  <%= javascript_include_tag "dtu_core/application" %>
+  <%= csrf_meta_tags %>
+</head>
+<body>
+
+<%= yield %>
+
+</body>
+</html>

bin/rails

+#!/usr/bin/env ruby
+# This command will automatically be run when you run "rails" with Rails 4 gems installed from the root of your application.
+
+ENGINE_ROOT = File.expand_path('../..', __FILE__)
+ENGINE_PATH = File.expand_path('../../lib/dtu_core/engine', __FILE__)
+
+# Set up gems listed in the Gemfile.
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)
+require 'bundler/setup' if File.exist?(ENV['BUNDLE_GEMFILE'])
+
+require 'rails/all'
+require 'rails/engine/commands'

config/application.rb

+require File.expand_path('../boot', __FILE__)
+
+require "rails"
+
+module DtuCore
+  class Application < Rails::Application
+    config.dtu_data = {:course => ENV['COURSE_NAME'],
+                      :root_path => ENV['DTU_DATA_ROOT'] || "/dtu-data", 
+                      :filemanager_path => ENV['DTU_FILEMANAGER'] || "/filemanager",
+                      :source => "core" }
+  end
+end