From 63c7fe8e4892b22e80c015bf0ecb04496318623b Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Mon, 8 Jul 2019 12:03:45 +0200
Subject: Refactor controllers for statuses, accounts, and more (#11249)

---
 app/controllers/well_known/host_meta_controller.rb | 2 +-
 app/controllers/well_known/webfinger_controller.rb | 9 +++------
 2 files changed, 4 insertions(+), 7 deletions(-)

(limited to 'app/controllers/well_known')

diff --git a/app/controllers/well_known/host_meta_controller.rb b/app/controllers/well_known/host_meta_controller.rb
index 5fb70288a..2e9298c4a 100644
--- a/app/controllers/well_known/host_meta_controller.rb
+++ b/app/controllers/well_known/host_meta_controller.rb
@@ -13,7 +13,7 @@ module WellKnown
         format.xml { render content_type: 'application/xrd+xml' }
       end
 
-      expires_in(3.days, public: true)
+      expires_in 3.days, public: true
     end
   end
 end
diff --git a/app/controllers/well_known/webfinger_controller.rb b/app/controllers/well_known/webfinger_controller.rb
index 28654b61d..53f7f1e27 100644
--- a/app/controllers/well_known/webfinger_controller.rb
+++ b/app/controllers/well_known/webfinger_controller.rb
@@ -19,7 +19,7 @@ module WellKnown
         end
       end
 
-      expires_in(3.days, public: true)
+      expires_in 3.days, public: true
     rescue ActiveRecord::RecordNotFound
       head 404
     end
@@ -27,12 +27,9 @@ module WellKnown
     private
 
     def username_from_resource
-      resource_user = resource_param
-
+      resource_user    = resource_param
       username, domain = resource_user.split('@')
-      if Rails.configuration.x.alternate_domains.include?(domain)
-        resource_user = "#{username}@#{Rails.configuration.x.local_domain}"
-      end
+      resource_user    = "#{username}@#{Rails.configuration.x.local_domain}" if Rails.configuration.x.alternate_domains.include?(domain)
 
       WebfingerResource.new(resource_user).username
     end
-- 
cgit 


From 1955aa9f7da8c72312aaafde3142b5ba910d2d0d Mon Sep 17 00:00:00 2001
From: "dependabot-preview[bot]"
 <27856297+dependabot-preview[bot]@users.noreply.github.com>
Date: Tue, 23 Jul 2019 11:10:42 +0200
Subject: Bump active_model_serializers from 0.10.9 to 0.10.10 (#11311)

* Bump active_model_serializers from 0.10.9 to 0.10.10

Bumps [active_model_serializers](https://github.com/rails-api/active_model_serializers) from 0.10.9 to 0.10.10.
- [Release notes](https://github.com/rails-api/active_model_serializers/releases)
- [Changelog](https://github.com/rails-api/active_model_serializers/blob/v0.10.10/CHANGELOG.md)
- [Commits](https://github.com/rails-api/active_model_serializers/compare/v0.10.9...v0.10.10)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

* Add root option to render method
---
 Gemfile.lock                                                  | 8 ++++----
 app/controllers/api/v1/instances_controller.rb                | 2 +-
 app/controllers/manifests_controller.rb                       | 2 +-
 app/controllers/well_known/keybase_proof_config_controller.rb | 2 +-
 4 files changed, 7 insertions(+), 7 deletions(-)

(limited to 'app/controllers/well_known')

diff --git a/Gemfile.lock b/Gemfile.lock
index 1a5d54b44..f435b3a35 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,9 +45,9 @@ GEM
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    active_model_serializers (0.10.9)
-      actionpack (>= 4.1, < 6)
-      activemodel (>= 4.1, < 6)
+    active_model_serializers (0.10.10)
+      actionpack (>= 4.1, < 6.1)
+      activemodel (>= 4.1, < 6.1)
       case_transform (>= 0.2)
       jsonapi-renderer (>= 0.1.1.beta1, < 0.3)
     active_record_query_trace (1.6.2)
@@ -304,7 +304,7 @@ GEM
       json-ld (~> 3.0)
       multi_json (~> 1.12)
       rdf (~> 3.0)
-    jsonapi-renderer (0.2.0)
+    jsonapi-renderer (0.2.2)
     jwt (2.1.0)
     kaminari (1.1.1)
       activesupport (>= 4.1.0)
diff --git a/app/controllers/api/v1/instances_controller.rb b/app/controllers/api/v1/instances_controller.rb
index b68c78615..93e4f0003 100644
--- a/app/controllers/api/v1/instances_controller.rb
+++ b/app/controllers/api/v1/instances_controller.rb
@@ -6,6 +6,6 @@ class Api::V1::InstancesController < Api::BaseController
 
   def show
     expires_in 3.minutes, public: true
-    render_with_cache json: {}, serializer: REST::InstanceSerializer
+    render_with_cache json: {}, serializer: REST::InstanceSerializer, root: 'instance'
   end
 end
diff --git a/app/controllers/manifests_controller.rb b/app/controllers/manifests_controller.rb
index 1e5db4393..491cde745 100644
--- a/app/controllers/manifests_controller.rb
+++ b/app/controllers/manifests_controller.rb
@@ -5,6 +5,6 @@ class ManifestsController < ApplicationController
 
   def show
     expires_in 3.minutes, public: true
-    render json: InstancePresenter.new, serializer: ManifestSerializer
+    render json: InstancePresenter.new, serializer: ManifestSerializer, root: 'instance'
   end
 end
diff --git a/app/controllers/well_known/keybase_proof_config_controller.rb b/app/controllers/well_known/keybase_proof_config_controller.rb
index eb41e586f..e1d43ecbe 100644
--- a/app/controllers/well_known/keybase_proof_config_controller.rb
+++ b/app/controllers/well_known/keybase_proof_config_controller.rb
@@ -3,7 +3,7 @@
 module WellKnown
   class KeybaseProofConfigController < ActionController::Base
     def show
-      render json: {}, serializer: ProofProvider::Keybase::ConfigSerializer
+      render json: {}, serializer: ProofProvider::Keybase::ConfigSerializer, root: 'keybase_config'
     end
   end
 end
-- 
cgit 


From 8b9d0a05337b6bcf57b51abf45e21d9474bf2684 Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Thu, 1 Aug 2019 19:14:02 +0200
Subject: Remove XML version of Webfinger and remove links to Atom feeds
 (#11460)

Fix #11453
---
 app/controllers/well_known/webfinger_controller.rb | 11 +----
 app/serializers/webfinger_serializer.rb            |  1 -
 app/views/accounts/show.html.haml                  |  1 -
 app/views/well_known/webfinger/show.xml.ruby       | 51 ----------------------
 .../well_known/webfinger_controller_spec.rb        | 11 -----
 spec/requests/webfinger_request_spec.rb            | 17 --------
 6 files changed, 1 insertion(+), 91 deletions(-)
 delete mode 100644 app/views/well_known/webfinger/show.xml.ruby

(limited to 'app/controllers/well_known')

diff --git a/app/controllers/well_known/webfinger_controller.rb b/app/controllers/well_known/webfinger_controller.rb
index 53f7f1e27..50bace217 100644
--- a/app/controllers/well_known/webfinger_controller.rb
+++ b/app/controllers/well_known/webfinger_controller.rb
@@ -9,17 +9,8 @@ module WellKnown
     def show
       @account = Account.find_local!(username_from_resource)
 
-      respond_to do |format|
-        format.any(:json, :html) do
-          render json: @account, serializer: WebfingerSerializer, content_type: 'application/jrd+json'
-        end
-
-        format.xml do
-          render content_type: 'application/xrd+xml'
-        end
-      end
-
       expires_in 3.days, public: true
+      render json: @account, serializer: WebfingerSerializer, content_type: 'application/jrd+json'
     rescue ActiveRecord::RecordNotFound
       head 404
     end
diff --git a/app/serializers/webfinger_serializer.rb b/app/serializers/webfinger_serializer.rb
index 008d0c182..c67363b8f 100644
--- a/app/serializers/webfinger_serializer.rb
+++ b/app/serializers/webfinger_serializer.rb
@@ -26,7 +26,6 @@ class WebfingerSerializer < ActiveModel::Serializer
     else
       [
         { rel: 'http://webfinger.net/rel/profile-page', type: 'text/html', href: short_account_url(object) },
-        { rel: 'http://schemas.google.com/g/2010#updates-from', type: 'application/atom+xml', href: account_url(object, format: 'atom') },
         { rel: 'self', type: 'application/activity+json', href: account_url(object) },
         { rel: 'http://ostatus.org/schema/1.0/subscribe', template: "#{authorize_interaction_url}?uri={uri}" },
       ]
diff --git a/app/views/accounts/show.html.haml b/app/views/accounts/show.html.haml
index 6846abeb6..bf7a9f5f7 100644
--- a/app/views/accounts/show.html.haml
+++ b/app/views/accounts/show.html.haml
@@ -7,7 +7,6 @@
   - if @account.user&.setting_noindex
     %meta{ name: 'robots', content: 'noindex, noarchive' }/
 
-  %link{ rel: 'alternate', type: 'application/atom+xml', href: account_url(@account, format: 'atom') }/
   %link{ rel: 'alternate', type: 'application/rss+xml', href: account_url(@account, format: 'rss') }/
   %link{ rel: 'alternate', type: 'application/activity+json', href: ActivityPub::TagManager.instance.uri_for(@account) }/
 
diff --git a/app/views/well_known/webfinger/show.xml.ruby b/app/views/well_known/webfinger/show.xml.ruby
deleted file mode 100644
index f5a54052a..000000000
--- a/app/views/well_known/webfinger/show.xml.ruby
+++ /dev/null
@@ -1,51 +0,0 @@
-doc = Ox::Document.new(version: '1.0')
-
-doc << Ox::Element.new('XRD').tap do |xrd|
-  xrd['xmlns'] = 'http://docs.oasis-open.org/ns/xri/xrd-1.0'
-
-  xrd << (Ox::Element.new('Subject') << @account.to_webfinger_s)
-
-  if @account.instance_actor?
-    xrd << (Ox::Element.new('Alias') << instance_actor_url)
-
-    xrd << Ox::Element.new('Link').tap do |link|
-      link['rel']      = 'http://webfinger.net/rel/profile-page'
-      link['type']     = 'text/html'
-      link['href']     = about_more_url(instance_actor: true)
-    end
-
-    xrd << Ox::Element.new('Link').tap do |link|
-      link['rel']      = 'self'
-      link['type']     = 'application/activity+json'
-      link['href']     = instance_actor_url
-    end
-  else
-    xrd << (Ox::Element.new('Alias') << short_account_url(@account))
-    xrd << (Ox::Element.new('Alias') << account_url(@account))
-
-    xrd << Ox::Element.new('Link').tap do |link|
-      link['rel']      = 'http://webfinger.net/rel/profile-page'
-      link['type']     = 'text/html'
-      link['href']     = short_account_url(@account)
-    end
-
-    xrd << Ox::Element.new('Link').tap do |link|
-      link['rel']      = 'http://schemas.google.com/g/2010#updates-from'
-      link['type']     = 'application/atom+xml'
-      link['href']     = account_url(@account, format: 'atom')
-    end
-
-    xrd << Ox::Element.new('Link').tap do |link|
-      link['rel']      = 'self'
-      link['type']     = 'application/activity+json'
-      link['href']     = account_url(@account)
-    end
-
-    xrd << Ox::Element.new('Link').tap do |link|
-      link['rel']      = 'http://ostatus.org/schema/1.0/subscribe'
-      link['template'] = "#{authorize_interaction_url}?acct={uri}"
-    end
-  end
-end
-
-('<?xml version="1.0" encoding="UTF-8"?>' + Ox.dump(doc, effort: :tolerant)).force_encoding('UTF-8')
diff --git a/spec/controllers/well_known/webfinger_controller_spec.rb b/spec/controllers/well_known/webfinger_controller_spec.rb
index b05745ea3..20275aa63 100644
--- a/spec/controllers/well_known/webfinger_controller_spec.rb
+++ b/spec/controllers/well_known/webfinger_controller_spec.rb
@@ -56,17 +56,6 @@ PEM
       expect(json[:aliases]).to include('https://cb6e6126.ngrok.io/@alice', 'https://cb6e6126.ngrok.io/users/alice')
     end
 
-    it 'returns JSON when account can be found' do
-      get :show, params: { resource: alice.to_webfinger_s }, format: :xml
-
-      xml = Nokogiri::XML(response.body)
-
-      expect(response).to have_http_status(200)
-      expect(response.content_type).to eq 'application/xrd+xml'
-      expect(xml.at_xpath('//xmlns:Subject').content).to eq 'acct:alice@cb6e6126.ngrok.io'
-      expect(xml.xpath('//xmlns:Alias').map(&:content)).to include('https://cb6e6126.ngrok.io/@alice', 'https://cb6e6126.ngrok.io/users/alice')
-    end
-
     it 'returns http not found when account cannot be found' do
       get :show, params: { resource: 'acct:not@existing.com' }, format: :json
 
diff --git a/spec/requests/webfinger_request_spec.rb b/spec/requests/webfinger_request_spec.rb
index 7f9e1162e..48823714e 100644
--- a/spec/requests/webfinger_request_spec.rb
+++ b/spec/requests/webfinger_request_spec.rb
@@ -12,23 +12,6 @@ describe 'The webfinger route' do
     end
   end
 
-  describe 'asking for xml format' do
-    it 'returns an xml response for xml format' do
-      get webfinger_url(resource: alice.to_webfinger_s, format: :xml)
-
-      expect(response).to have_http_status(200)
-      expect(response.content_type).to eq 'application/xrd+xml'
-    end
-
-    it 'returns an xml response for xml accept header' do
-      headers = { 'HTTP_ACCEPT' => 'application/xrd+xml' }
-      get webfinger_url(resource: alice.to_webfinger_s), headers: headers
-
-      expect(response).to have_http_status(200)
-      expect(response.content_type).to eq 'application/xrd+xml'
-    end
-  end
-
   describe 'asking for json format' do
     it 'returns a json response for json format' do
       get webfinger_url(resource: alice.to_webfinger_s, format: :json)
-- 
cgit 


From 60e684af5f9bfb73cd3b7cfe1cf5678c6d8f69c8 Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Fri, 30 Aug 2019 02:49:33 +0200
Subject: Fix uncaught error when resource param is missing in Webfinger
 request (#11701)

---
 app/controllers/well_known/webfinger_controller.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'app/controllers/well_known')

diff --git a/app/controllers/well_known/webfinger_controller.rb b/app/controllers/well_known/webfinger_controller.rb
index 50bace217..d60bf98ab 100644
--- a/app/controllers/well_known/webfinger_controller.rb
+++ b/app/controllers/well_known/webfinger_controller.rb
@@ -11,7 +11,7 @@ module WellKnown
 
       expires_in 3.days, public: true
       render json: @account, serializer: WebfingerSerializer, content_type: 'application/jrd+json'
-    rescue ActiveRecord::RecordNotFound
+    rescue ActiveRecord::RecordNotFound, ActionController::ParameterMissing
       head 404
     end
 
-- 
cgit 


From b671b912113b8705729a44424946bb31ae445df5 Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Tue, 17 Sep 2019 14:58:02 +0200
Subject: Fix webfinger response not returning 410 when account is suspended
 (#11869)

---
 app/controllers/well_known/webfinger_controller.rb | 24 ++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

(limited to 'app/controllers/well_known')

diff --git a/app/controllers/well_known/webfinger_controller.rb b/app/controllers/well_known/webfinger_controller.rb
index d60bf98ab..480e58f3f 100644
--- a/app/controllers/well_known/webfinger_controller.rb
+++ b/app/controllers/well_known/webfinger_controller.rb
@@ -5,18 +5,22 @@ module WellKnown
     include RoutingHelper
 
     before_action { response.headers['Vary'] = 'Accept' }
+    before_action :set_account
+    before_action :check_account_suspension
 
-    def show
-      @account = Account.find_local!(username_from_resource)
+    rescue_from ActiveRecord::RecordNotFound, ActionController::ParameterMissing, with: :not_found
 
+    def show
       expires_in 3.days, public: true
       render json: @account, serializer: WebfingerSerializer, content_type: 'application/jrd+json'
-    rescue ActiveRecord::RecordNotFound, ActionController::ParameterMissing
-      head 404
     end
 
     private
 
+    def set_account
+      @account = Account.find_local!(username_from_resource)
+    end
+
     def username_from_resource
       resource_user    = resource_param
       username, domain = resource_user.split('@')
@@ -28,5 +32,17 @@ module WellKnown
     def resource_param
       params.require(:resource)
     end
+
+    def check_account_suspension
+      expires_in(3.minutes, public: true) && gone if @account.suspended?
+    end
+
+    def not_found
+      head 404
+    end
+
+    def gone
+      head 410
+    end
   end
 end
-- 
cgit 


From 5f69eb89e215fe7dc02cd0dc3f39b13f1945e88b Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Sun, 29 Sep 2019 21:31:51 +0200
Subject: Add a nodeinfo endpoint (#12002)

* Add nodeinfo endpoint

* dont commit stuff from my local dev

* consistant naming since we implimented 2.1 schema

* Add some additional node info stuff

* Add nodeinfo endpoint

* dont commit stuff from my local dev

* consistant naming since we implimented 2.1 schema

* expanding this to include federation info

* codeclimate feedback

* CC feedback

* using activeserializers seems like a good idea...

* get rid of draft 2.1 version

* Reimplement 2.1, also fix metaData -> metadata

* Fix metaData -> metadata here too

* Fix nodeinfo 2.1 tests

* Implement cache for monthly user aggregate

* Useless

* Remove ostatus from the list of supported protocols

* Fix nodeinfo's open_registration reading obsolete setting variable

* Only serialize domain blocks with user-facing limitations

* Do not needlessly list noop severity in nodeinfo

* Only serialize domain blocks info in nodeinfo when they are set to be displayed to everyone

* Enable caching for nodeinfo endpoints

* Fix rendering nodeinfo

* CodeClimate fixes

* Please CodeClimate

* Change InstancePresenter#active_user_count_months for clarity

* Refactor NodeInfoSerializer#metadata

* Remove nodeinfo 2.1 support as the schema doesn't exist

* Clean-up
---
 app/controllers/well_known/nodeinfo_controller.rb  | 19 ++++++++++
 app/lib/activity_tracker.rb                        |  2 +-
 app/lib/nodeinfo/adapter.rb                        |  7 ++++
 app/presenters/instance_presenter.rb               |  4 +--
 app/serializers/nodeinfo/discovery_serializer.rb   | 11 ++++++
 app/serializers/nodeinfo/serializer.rb             | 41 ++++++++++++++++++++++
 config/initializers/inflections.rb                 |  1 +
 config/routes.rb                                   |  3 ++
 .../well_known/nodeinfo_controller_spec.rb         | 36 +++++++++++++++++++
 9 files changed, 121 insertions(+), 3 deletions(-)
 create mode 100644 app/controllers/well_known/nodeinfo_controller.rb
 create mode 100644 app/lib/nodeinfo/adapter.rb
 create mode 100644 app/serializers/nodeinfo/discovery_serializer.rb
 create mode 100644 app/serializers/nodeinfo/serializer.rb
 create mode 100644 spec/controllers/well_known/nodeinfo_controller_spec.rb

(limited to 'app/controllers/well_known')

diff --git a/app/controllers/well_known/nodeinfo_controller.rb b/app/controllers/well_known/nodeinfo_controller.rb
new file mode 100644
index 000000000..11a699ebc
--- /dev/null
+++ b/app/controllers/well_known/nodeinfo_controller.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module WellKnown
+  class NodeInfoController < ActionController::Base
+    include CacheConcern
+
+    before_action { response.headers['Vary'] = 'Accept' }
+
+    def index
+      expires_in 3.days, public: true
+      render_with_cache json: {}, serializer: NodeInfo::DiscoverySerializer, adapter: NodeInfo::Adapter, expires_in: 3.days, root: 'nodeinfo'
+    end
+
+    def show
+      expires_in 30.minutes, public: true
+      render_with_cache json: {}, serializer: NodeInfo::Serializer, adapter: NodeInfo::Adapter, expires_in: 30.minutes, root: 'nodeinfo'
+    end
+  end
+end
diff --git a/app/lib/activity_tracker.rb b/app/lib/activity_tracker.rb
index ae3c11b6a..81303b715 100644
--- a/app/lib/activity_tracker.rb
+++ b/app/lib/activity_tracker.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class ActivityTracker
-  EXPIRE_AFTER = 90.days.seconds
+  EXPIRE_AFTER = 6.months.seconds
 
   class << self
     include Redisable
diff --git a/app/lib/nodeinfo/adapter.rb b/app/lib/nodeinfo/adapter.rb
new file mode 100644
index 000000000..1b48dcb98
--- /dev/null
+++ b/app/lib/nodeinfo/adapter.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class NodeInfo::Adapter < ActiveModelSerializers::Adapter::Attributes
+  def self.default_key_transform
+    :camel_lower
+  end
+end
diff --git a/app/presenters/instance_presenter.rb b/app/presenters/instance_presenter.rb
index becc92c2d..c4caeaa8c 100644
--- a/app/presenters/instance_presenter.rb
+++ b/app/presenters/instance_presenter.rb
@@ -20,8 +20,8 @@ class InstancePresenter
     Rails.cache.fetch('user_count') { User.confirmed.joins(:account).merge(Account.without_suspended).count }
   end
 
-  def active_user_count
-    Rails.cache.fetch('active_user_count') { Redis.current.pfcount(*(0..3).map { |i| "activity:logins:#{i.weeks.ago.utc.to_date.cweek}" }) }
+  def active_user_count(weeks = 4)
+    Rails.cache.fetch('active_user_count') { Redis.current.pfcount(*(0...weeks).map { |i| "activity:logins:#{i.weeks.ago.utc.to_date.cweek}" }) }
   end
 
   def status_count
diff --git a/app/serializers/nodeinfo/discovery_serializer.rb b/app/serializers/nodeinfo/discovery_serializer.rb
new file mode 100644
index 000000000..07ab2a6ee
--- /dev/null
+++ b/app/serializers/nodeinfo/discovery_serializer.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class NodeInfo::DiscoverySerializer < ActiveModel::Serializer
+  include RoutingHelper
+
+  attribute :links
+
+  def links
+    [{ rel: 'http://nodeinfo.diaspora.software/ns/schema/2.0', href: nodeinfo_schema_url }]
+  end
+end
diff --git a/app/serializers/nodeinfo/serializer.rb b/app/serializers/nodeinfo/serializer.rb
new file mode 100644
index 000000000..1a7d7a911
--- /dev/null
+++ b/app/serializers/nodeinfo/serializer.rb
@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+class NodeInfo::Serializer < ActiveModel::Serializer
+  include RoutingHelper
+
+  attributes :version, :software, :protocols, :usage
+
+  def version
+    '2.0'
+  end
+
+  def software
+    { name: 'mastodon', version: Mastodon::Version.to_s }
+  end
+
+  def services
+    { outbound: [], inbound: [] }
+  end
+
+  def protocols
+    %w(activitypub)
+  end
+
+  def usage
+    {
+      users: {
+        total: instance_presenter.user_count,
+        active_month: instance_presenter.active_user_count(4),
+        active_halfyear: instance_presenter.active_user_count(24),
+      },
+
+      local_posts: instance_presenter.status_count,
+    }
+  end
+
+  private
+
+  def instance_presenter
+    @instance_presenter ||= InstancePresenter.new
+  end
+end
diff --git a/config/initializers/inflections.rb b/config/initializers/inflections.rb
index bf0cb52a3..c65153b0a 100644
--- a/config/initializers/inflections.rb
+++ b/config/initializers/inflections.rb
@@ -18,4 +18,5 @@ ActiveSupport::Inflector.inflections(:en) do |inflect|
   inflect.acronym 'PubSubHubbub'
   inflect.acronym 'ActivityStreams'
   inflect.acronym 'JsonLd'
+  inflect.acronym 'NodeInfo'
 end
diff --git a/config/routes.rb b/config/routes.rb
index f1a69cf5c..e43e201a5 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -24,10 +24,13 @@ Rails.application.routes.draw do
   end
 
   get '.well-known/host-meta', to: 'well_known/host_meta#show', as: :host_meta, defaults: { format: 'xml' }
+  get '.well-known/nodeinfo', to: 'well_known/nodeinfo#index', as: :nodeinfo, defaults: { format: 'json' }
   get '.well-known/webfinger', to: 'well_known/webfinger#show', as: :webfinger
   get '.well-known/change-password', to: redirect('/auth/edit')
   get '.well-known/keybase-proof-config', to: 'well_known/keybase_proof_config#show'
 
+  get '/nodeinfo/2.0', to: 'well_known/nodeinfo#show', as: :nodeinfo_schema
+
   get 'manifest', to: 'manifests#show', defaults: { format: 'json' }
   get 'intent', to: 'intents#show'
   get 'custom.css', to: 'custom_css#show', as: :custom_css
diff --git a/spec/controllers/well_known/nodeinfo_controller_spec.rb b/spec/controllers/well_known/nodeinfo_controller_spec.rb
new file mode 100644
index 000000000..12e1fa415
--- /dev/null
+++ b/spec/controllers/well_known/nodeinfo_controller_spec.rb
@@ -0,0 +1,36 @@
+require 'rails_helper'
+
+describe WellKnown::NodeInfoController, type: :controller do
+  render_views
+
+  describe 'GET #index' do
+    it 'returns json document pointing to node info' do
+      get :index
+
+      expect(response).to have_http_status(200)
+      expect(response.content_type).to eq 'application/json'
+
+      json = body_as_json
+
+      expect(json[:links]).to be_an Array
+      expect(json[:links][0][:rel]).to eq 'http://nodeinfo.diaspora.software/ns/schema/2.0'
+      expect(json[:links][0][:href]).to include 'nodeinfo/2.0'
+    end
+  end
+
+  describe 'GET #show' do
+    it 'returns json document with node info properties' do
+      get :show
+
+      expect(response).to have_http_status(200)
+      expect(response.content_type).to eq 'application/json'
+
+      json = body_as_json
+
+      expect(json[:version]).to eq '2.0'
+      expect(json[:usage]).to be_a Hash
+      expect(json[:software]).to be_a Hash
+      expect(json[:protocols]).to be_an Array
+    end
+  end
+end
-- 
cgit