feat: add a simple grant exchange endpoint

1 files changed, 11 insertions, 1 deletions

diff --git a/bin/sp b/bin/sp
index fa22efd0..99eae914 100755
--- a/bin/sp
+++ b/bin/sp
@@ -7,6 +7,7 @@ gemfile do
 
   gem "base64", "~> 0.1"
   gem "erb", "~> 4.0"
+  gem "net-hippie", "~> 1.0"
   gem "rack", "~> 3.0"
   gem "rackup", "~> 2.0"
   gem "saml-kit", "~> 1.0"
@@ -89,7 +90,16 @@ class ServiceProvider
 
   def oauth_callback(request)
     # TODO:: Exchange grant (authorization_code) for an access token
-    [200, { "Content-Type" => "application/json" }, [JSON.pretty_generate(request.params)]]
+    response = Net::Hippie.default_client.post(
+      "http://localhost:8282/oauth/token",
+      headers: { 'Authorization' => Net::Hippie.basic_auth('client_id', 'secret') },
+      body: {
+        grant_type: "authorization_code",
+        code: request.params['code'],
+        code_verifier: "not_implemented"
+      }
+    )
+    [200, { "Content-Type" => "application/json" }, [JSON.pretty_generate(request.params.merge(JSON.parse(response.body)))]]
   end
 
   def saml_post_to_idp(request)