feat: add omniauth v2 support

Author: michaellzc

examples/sinatra/Gemfile

@@ -2,4 +2,6 @@ source "https://rubygems.org"
 
 git_source(:github) { |repo_name| "https://github.com/#{repo_name}" }
 
+gem "sinatra", ">= 2.0"
+gem "omniauth", ">= 2.0"
 gem "omniauth-open-edx", path: "../../"

examples/sinatra/app.rb

@@ -1,14 +1,19 @@
 begin
   require "sinatra"
+  require "securerandom"
   require "omniauth"
   require "omniauth-open-edx"
 rescue LoadError
   require "rubygems"
+  require "securerandom"
   require "sinatra"
   require "omniauth"
   require "omniauth-open-edx"
 end
 
+set sessions: true
+set :session_secret, ENV.fetch("SESSION_SECRET") { SecureRandom.hex(64) }
+
 use Rack::Session::Cookie
 use OmniAuth::Builder do
   provider :open_edx,
@@ -24,7 +29,10 @@
 
 get "/" do
   <<-HTML
-  <a href='/auth/open_edx'>Sign in with Open edX</a>
+  <form method='post' action='/auth/open_edx'>
+    <input type="hidden" name="authenticity_token" value='#{request.env["rack.session"]["csrf"]}'>
+    <button type='submit'>Sign in with Open edX</button>
+  </form>
   HTML
 end
 

omniauth-open-edx.gemspec

@@ -29,7 +29,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "jwt", ">= 2.0"
-  spec.add_dependency "omniauth", [">= 1.9", "< 2"]
+  spec.add_dependency "omniauth", [">= 1.9", "< 3"]
   spec.add_dependency "omniauth-oauth2", ">= 1.4"
 
   spec.add_development_dependency "bundler", ">= 2.0"