Feature/idp metadata

CHANGELOG.md

@@ -1,6 +1,9 @@
 # Changelog
 
 ## [Unreleased]
+### Added
+- Fetch all identity provider from https://registry.spid.gov.it
+- Parse and store metadata from single Identity Provider
 
 ## [0.2.2] - 2018-07-02
 ### Fixed

lib/spid.rb

@@ -2,7 +2,9 @@
 
 require "spid/authn_request"
 require "spid/generate_authn_request"
+require "spid/identity_providers"
 require "spid/metadata"
+require "spid/idp_metadata"
 require "spid/version"
 
 module Spid # :nodoc:

lib/spid/identity_providers.rb

@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+require "faraday"
+require "faraday_middleware"
+
+module Spid
+  class IdentityProviders # :nodoc:
+    def self.fetch_all
+      new.fetch_all
+    end
+
+    def fetch_all
+      spid_idp_entities.map do |idp|
+        {
+          name: idp["entity_name"].gsub(/ ID$/, "").downcase,
+          metadata_url: idp["metadata_url"],
+          entity_id: idp["entity_id"]
+        }
+      end
+    end
+
+    private
+
+    def spid_idp_entities
+      return [] if response.body["spidFederationRegistry"].blank?
+      response.body["spidFederationRegistry"]["entities"]
+    end
+
+    def response
+      connection.get do |req|
+        req.url "/api/identity-providers"
+        req.headers["Accept"] = "application/json"
+      end
+    end
+
+    def connection
+      Faraday.new("https://registry.spid.gov.it") do |conn|
+        conn.response :json, content_type: /\bjson$/
+
+        conn.adapter Faraday.default_adapter
+      end
+    end
+  end
+end

lib/spid/idp_metadata.rb

@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+require "singleton"
+require "onelogin/ruby-saml/idp_metadata_parser"
+
+module Spid
+  class IdpMetadata # :nodoc:
+    include Singleton
+
+    def initialize
+      @identity_providers = Spid::IdentityProviders.fetch_all
+      @metadata = {}
+    end
+
+    def [](idp_name)
+      return @metadata[idp_name] if @metadata[idp_name].present?
+      idp_hash = identity_provider_hash(idp_name)
+
+      @metadata[idp_name] = parser.parse_remote_to_hash(
+        idp_hash[:metadata_url],
+        idp_hash[:metadata_url].start_with?("https://")
+      )
+      @metadata[idp_name]
+    end
+
+    def identity_provider_hash(idp_name)
+      @identity_providers.find do |idp|
+        idp[:name] == idp_name.to_s
+      end
+    end
+
+    private
+
+    def parser
+      @parser ||= ::OneLogin::RubySaml::IdpMetadataParser.new
+    end
+  end
+end

spec/spec_helper.rb

@@ -18,11 +18,18 @@
 require "bundler/setup"
 require "spid"
 require "nokogiri"
+require "vcr"
 
 Dir[File.join("./spec/support/**/*.rb")].each { |f| require f }
 
 ENV["ruby-saml/testing"] = "true" # disable ruby-saml logging
 
+VCR.configure do |c|
+  c.cassette_library_dir = "spec/cassettes"
+  c.hook_into :webmock
+  c.configure_rspec_metadata!
+end
+
 RSpec.configure do |config|
   # Enable flags like --only-failures and --next-failure
   config.example_status_persistence_file_path = ".rspec_status"