Initial import

.gitignore

+/.bundle
+/vendor/bundle
+/config.yml
+/public

Gemfile

+source 'https://rubygems.org'
+
+gem 'bootstrap', '~> 4.3'
+gem 'font-awesome-sass', '~> 5.8'
+gem 'haml', '~> 5.0'
+gem 'net-ldap', '~> 0.16.1'
+gem 'sinatra', '~> 2.0'
+gem 'sinatra-asset-pipeline', '~> 2.2'
+gem 'sinatra-contrib', '~> 2.0'
+gem 'uglifier', '~> 4.1'
+
+group :development do
+  gem 'rerun', require: false
+  gem 'rubocop', '~> 0.66.0', require: false
+end

Gemfile.lock

+GEM
+  remote: https://rubygems.org/
+  specs:
+    actionpack (5.2.2.1)
+      actionview (= 5.2.2.1)
+      activesupport (= 5.2.2.1)
+      rack (~> 2.0)
+      rack-test (>= 0.6.3)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (5.2.2.1)
+      activesupport (= 5.2.2.1)
+      builder (~> 3.1)
+      erubi (~> 1.4)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    activesupport (5.2.2.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
+      minitest (~> 5.1)
+      tzinfo (~> 1.1)
+    ast (2.4.0)
+    autoprefixer-rails (9.5.0)
+      execjs
+    backports (3.12.0)
+    bootstrap (4.3.1)
+      autoprefixer-rails (>= 9.1.0)
+      popper_js (>= 1.14.3, < 2)
+      sassc-rails (>= 2.0.0)
+    builder (3.2.3)
+    coffee-script (2.4.1)
+      coffee-script-source
+      execjs
+    coffee-script-source (1.12.2)
+    concurrent-ruby (1.1.5)
+    crass (1.0.4)
+    erubi (1.8.0)
+    execjs (2.7.0)
+    ffi (1.10.0)
+    font-awesome-sass (5.8.1)
+      sassc (>= 1.11)
+    haml (5.0.4)
+      temple (>= 0.8.0)
+      tilt
+    i18n (1.6.0)
+      concurrent-ruby (~> 1.0)
+    jaro_winkler (1.5.2)
+    listen (3.1.5)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+      ruby_dep (~> 1.2)
+    loofah (2.2.3)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.5.9)
+    method_source (0.9.2)
+    mini_portile2 (2.4.0)
+    minitest (5.11.3)
+    multi_json (1.13.1)
+    mustermann (1.0.3)
+    net-ldap (0.16.1)
+    nokogiri (1.10.1)
+      mini_portile2 (~> 2.4.0)
+    parallel (1.15.0)
+    parser (2.6.2.0)
+      ast (~> 2.4.0)
+    popper_js (1.14.5)
+    psych (3.1.0)
+    rack (2.0.6)
+    rack-protection (2.0.5)
+      rack
+    rack-test (1.1.0)
+      rack (>= 1.0, < 3)
+    rails-dom-testing (2.0.3)
+      activesupport (>= 4.2.0)
+      nokogiri (>= 1.6)
+    rails-html-sanitizer (1.0.4)
+      loofah (~> 2.2, >= 2.2.2)
+    railties (5.2.2.1)
+      actionpack (= 5.2.2.1)
+      activesupport (= 5.2.2.1)
+      method_source
+      rake (>= 0.8.7)
+      thor (>= 0.19.0, < 2.0)
+    rainbow (3.0.0)
+    rake (12.3.2)
+    rb-fsevent (0.10.3)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
+    rerun (0.13.0)
+      listen (~> 3.0)
+    rubocop (0.66.0)
+      jaro_winkler (~> 1.5.1)
+      parallel (~> 1.10)
+      parser (>= 2.5, != 2.5.1.1)
+      psych (>= 3.1.0)
+      rainbow (>= 2.2.2, < 4.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 1.4.0, < 1.6)
+    ruby-progressbar (1.10.0)
+    ruby_dep (1.5.0)
+    sass (3.7.3)
+      sass-listen (~> 4.0.0)
+    sass-listen (4.0.0)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+    sassc (2.0.1)
+      ffi (~> 1.9)
+      rake
+    sassc-rails (2.1.0)
+      railties (>= 4.0.0)
+      sassc (>= 2.0)
+      sprockets (> 3.0)
+      sprockets-rails
+      tilt
+    sinatra (2.0.5)
+      mustermann (~> 1.0)
+      rack (~> 2.0)
+      rack-protection (= 2.0.5)
+      tilt (~> 2.0)
+    sinatra-asset-pipeline (2.2.0)
+      coffee-script (~> 2.4)
+      rake (~> 12.3)
+      sass (~> 3.5)
+      sinatra (~> 2.0)
+      sprockets (~> 3.7)
+      sprockets-helpers (~> 1.2)
+    sinatra-contrib (2.0.5)
+      backports (>= 2.8.2)
+      multi_json
+      mustermann (~> 1.0)
+      rack-protection (= 2.0.5)
+      sinatra (= 2.0.5)
+      tilt (>= 1.3, < 3)
+    sprockets (3.7.2)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-helpers (1.2.1)
+      sprockets (>= 2.2)
+    sprockets-rails (3.2.1)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
+    temple (0.8.1)
+    thor (0.20.3)
+    thread_safe (0.3.6)
+    tilt (2.0.9)
+    tzinfo (1.2.5)
+      thread_safe (~> 0.1)
+    uglifier (4.1.20)
+      execjs (>= 0.3.0, < 3)
+    unicode-display_width (1.5.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  bootstrap (~> 4.3)
+  font-awesome-sass (~> 5.8)
+  haml (~> 5.0)
+  net-ldap (~> 0.16.1)
+  rerun
+  rubocop (~> 0.66.0)
+  sinatra (~> 2.0)
+  sinatra-asset-pipeline (~> 2.2)
+  sinatra-contrib (~> 2.0)
+  uglifier (~> 4.1)
+
+BUNDLED WITH
+   2.0.1

Rakefile

+require 'sinatra/asset_pipeline/task'
+require './usermanager'
+
+Sinatra::AssetPipeline::Task.define! UserManager
+
+require 'rubocop/rake_task'
+
+RuboCop::RakeTask.new

assets/javascripts/app.js

+//= require jquery3
+//= require popper
+//= require bootstrap

assets/stylesheets/app.scss

+@import "font-awesome-sprockets";
+@import "font-awesome";
+@import "bootstrap";

config.ru

+require './usermanager'
+run UserManager.new

config.sample.yml

+ldap:
+  host: 'directory.example.com'
+  base: 'dc=example,dc=com'
+  bind_dn: 'cn=service,cn=users,dc=example,dc=com'
+  password: 'Mb2.r5oHf-0t'

usermanager.rb

+require 'sinatra/base'
+require 'sinatra/asset_pipeline'
+require 'sinatra/config_file'
+require 'net/ldap'
+require 'bootstrap'
+require 'font-awesome-sass'
+
+# Main UserManager application class
+class UserManager < Sinatra::Base
+  set :assets_css_compressor, :sass
+  set :assets_js_compressor, :uglify
+  set :assets_paths, %w[assets assets/stylesheets assets/javascripts]
+  register Sinatra::AssetPipeline
+
+  register Sinatra::ConfigFile
+  config_file 'config.yml'
+
+  set :haml, format: :xhtml, content_type: :xhtml, escape_html: true
+
+  configure :development do
+    enable :logging
+  end
+
+  configure do
+    ldap = Net::LDAP.new(
+      host: settings.ldap[:host],
+      port: 636,
+      encryption: :simple_tls,
+      auth: {
+        method: :simple,
+        username: settings.ldap[:bind_dn],
+        password: settings.ldap[:password]
+      },
+      base: settings.ldap[:base]
+    )
+    set :ldap, ldap
+  end
+
+  get '/' do
+    haml :index
+  end
+
+  get '/list' do
+    users = settings.ldap.search(
+      filter: Net::LDAP::Filter.eq('objectClass', 'user')
+    )
+
+    haml :list, locals: { users: users }
+  end
+
+  run! if app_file == $PROGRAM_NAME
+end

views/index.haml

+%h1 Hello World!
+%p
+  Hello world, it’s
+  %code #{Time.now}
+  at the server!
+%ul
+  - (23..42).each do |i|
+    %li= i
\ No newline at end of file

views/layout.haml

+!!! XML
+!!! 5
+%html{xmlns: 'http://www.w3.org/1999/xhtml'}
+  %head
+    %link{rel: 'stylesheet', href: stylesheet_path('app')}
+    %script{type: 'text/javascript', src: javascript_path('app')}
+    %meta{name: 'viewport', content: 'width=device-width, initial-scale=1, shrink-to-fit=no'}
+    %title Usermanager
+  %body
+    %nav.navbar.navbar-dark.bg-dark.static-top.navbar-expand-lg
+      .container
+        %a.navbar-brand{href: '/'} UserManager
+        %button.navbar-toggler{type: 'button', data: {toggle: 'collapse', target: '#usermanager-navbar-collapse-1'}, aria: {controls: 'usermanager-navbar-collapse-1', expanded: 'false', label: 'Toggle navigation'}}
+          %span.navbar-toggler-icon
+        .collapse.navbar-collapse#usermanager-navbar-collapse-1
+          .navbar-nav
+            %a.nav-item.nav-link{href: '/list'} List Users
+          %span.navbar-text.ml-auto Not logged in
+    %main.container
+      != yield

views/list.haml

+%h1.pb-2.mt-4.mb-2.border-bottom#content List Users
+%table.table.table-striped
+  %caption List of users
+  %thead
+    %tr
+      %th User ID
+      %th First Name
+      %th Last Name
+      %th Primary Group
+      %th Groups
+      %th Status
+  %tbody
+    - users.each do |u|
+      - next unless u.respond_to? :givenname
+      %tr
+        %td= u.cn.join(', ')
+        %td= u.givenname.join(', ')
+        %td= u.sn.join(', ')
+        %td= u.gidnumber.join(', ')
+        %td Groups #FIXME
+        %td
+          -#%span{class: [:fas, u[:active] ? 'fa-check' : 'fa-lock'], aria: {hidden: :true}, title: u[:active] ? 'Enabled' : 'Disabled'}
+          -#%span.sr-only= u[:active] ? 'Enabled' : 'Disabled'
+          FIXME