Add remote interaction dialog for toots (#8202)

* Add remote interaction dialog for toots

* Change AuthorizeFollow into AuthorizeInteraction, support statuses

* Update brakeman.ignore

* Adjust how interaction buttons are display on public pages

* Fix tests

27 files changed, 347 insertions, 195 deletions

diff --git a/app/controllers/authorize_follows_controller.rb b/app/controllers/authorize_follows_controller.rb
deleted file mode 100644
index 775d5f23f..000000000
--- a/app/controllers/authorize_follows_controller.rb
+++ /dev/null
@@ -1,66 +0,0 @@
-# frozen_string_literal: true
-
-class AuthorizeFollowsController < ApplicationController
-  layout 'modal'
-
-  before_action :authenticate_user!
-  before_action :set_body_classes
-
-  def show
-    @account = located_account || render(:error)
-  end
-
-  def create
-    @account = follow_attempt.try(:target_account)
-
-    if @account.nil?
-      render :error
-    else
-      render :success
-    end
-  rescue ActiveRecord::RecordNotFound, Mastodon::NotPermittedError
-    render :error
-  end
-
-  private
-
-  def follow_attempt
-    FollowService.new.call(current_account, acct_without_prefix)
-  end
-
-  def located_account
-    if acct_param_is_url?
-      account_from_remote_fetch
-    else
-      account_from_remote_follow
-    end
-  end
-
-  def account_from_remote_fetch
-    FetchRemoteAccountService.new.call(acct_without_prefix)
-  end
-
-  def account_from_remote_follow
-    ResolveAccountService.new.call(acct_without_prefix)
-  end
-
-  def acct_param_is_url?
-    parsed_uri.path && %w(http https).include?(parsed_uri.scheme)
-  end
-
-  def parsed_uri
-    Addressable::URI.parse(acct_without_prefix).normalize
-  end
-
-  def acct_without_prefix
-    acct_params.gsub(/\Aacct:/, '')
-  end
-
-  def acct_params
-    params.fetch(:acct, '')
-  end
-
-  def set_body_classes
-    @body_classes = 'modal-layout'
-  end
-end
diff --git a/app/controllers/authorize_interactions_controller.rb b/app/controllers/authorize_interactions_controller.rb
new file mode 100644
index 000000000..e27366ea3
--- /dev/null
+++ b/app/controllers/authorize_interactions_controller.rb
@@ -0,0 +1,66 @@
+# frozen_string_literal: true
+
+class AuthorizeInteractionsController < ApplicationController
+  include Authorization
+
+  layout 'modal'
+
+  before_action :authenticate_user!
+  before_action :set_body_classes
+  before_action :set_resource
+
+  def show
+    if @resource.is_a?(Account)
+      render :show
+    elsif @resource.is_a?(Status)
+      redirect_to web_url("statuses/#{@resource.id}")
+    else
+      render :error
+    end
+  end
+
+  def create
+    if @resource.is_a?(Account) && FollowService.new.call(current_account, @resource)
+      render :success
+    else
+      render :error
+    end
+  rescue ActiveRecord::RecordNotFound, Mastodon::NotPermittedError
+    render :error
+  end
+
+  private
+
+  def set_resource
+    @resource = located_resource || render(:error)
+    authorize(@resource, :show?) if @resource.is_a?(Status)
+  end
+
+  def located_resource
+    if uri_param_is_url?
+      ResolveURLService.new.call(uri_param)
+    else
+      account_from_remote_follow
+    end
+  end
+
+  def account_from_remote_follow
+    ResolveAccountService.new.call(uri_param)
+  end
+
+  def uri_param_is_url?
+    parsed_uri.path && %w(http https).include?(parsed_uri.scheme)
+  end
+
+  def parsed_uri
+    Addressable::URI.parse(uri_param).normalize
+  end
+
+  def uri_param
+    params[:uri] || params.fetch(:acct, '').gsub(/\Aacct:/, '')
+  end
+
+  def set_body_classes
+    @body_classes = 'modal-layout'
+  end
+end
diff --git a/app/controllers/intents_controller.rb b/app/controllers/intents_controller.rb
index 56129d69a..9f41cf48a 100644
--- a/app/controllers/intents_controller.rb
+++ b/app/controllers/intents_controller.rb
@@ -8,7 +8,7 @@ class IntentsController < ApplicationController
     if uri.scheme == 'web+mastodon'
       case uri.host
       when 'follow'
-        return redirect_to authorize_follow_path(acct: uri.query_values['uri'].gsub(/\Aacct:/, ''))
+        return redirect_to authorize_interaction_path(uri: uri.query_values['uri'].gsub(/\Aacct:/, ''))
       when 'share'
         return redirect_to share_path(text: uri.query_values['text'])
       end
diff --git a/app/controllers/remote_follow_controller.rb b/app/controllers/remote_follow_controller.rb
index cd61fd763..8ba331cd1 100644
--- a/app/controllers/remote_follow_controller.rb
+++ b/app/controllers/remote_follow_controller.rb
@@ -42,5 +42,6 @@ class RemoteFollowController < ApplicationController
 
   def set_body_classes
     @body_classes = 'modal-layout'
+    @hide_header  = true
   end
 end
diff --git a/app/controllers/remote_interaction_controller.rb b/app/controllers/remote_interaction_controller.rb
new file mode 100644
index 000000000..6299a1e13
--- /dev/null
+++ b/app/controllers/remote_interaction_controller.rb
@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+class RemoteInteractionController < ApplicationController
+  include Authorization
+
+  layout 'modal'
+
+  before_action :set_status
+  before_action :set_body_classes
+
+  def new
+    @remote_follow = RemoteFollow.new(session_params)
+  end
+
+  def create
+    @remote_follow = RemoteFollow.new(resource_params)
+
+    if @remote_follow.valid?
+      session[:remote_follow] = @remote_follow.acct
+      redirect_to @remote_follow.interact_address_for(@status)
+    else
+      render :new
+    end
+  end
+
+  private
+
+  def resource_params
+    params.require(:remote_follow).permit(:acct)
+  end
+
+  def session_params
+    { acct: session[:remote_follow] }
+  end
+
+  def set_status
+    @status = Status.find(params[:id])
+    authorize @status, :show?
+  rescue Mastodon::NotPermittedError
+    # Reraise in order to get a 404
+    raise ActiveRecord::RecordNotFound
+  end
+
+  def set_body_classes
+    @body_classes = 'modal-layout'
+    @hide_header  = true
+  end
+end
diff --git a/app/helpers/home_helper.rb b/app/helpers/home_helper.rb
index 8449f6c8a..f5b501235 100644
--- a/app/helpers/home_helper.rb
+++ b/app/helpers/home_helper.rb
@@ -38,4 +38,14 @@ module HomeHelper
       end
     end
   end
+
+  def obscured_counter(count)
+    if count <= 0
+      0
+    elsif count == 1
+      1
+    else
+      '1+'
+    end
+  end
 end
diff --git a/app/javascript/packs/public.js b/app/javascript/packs/public.js
index 6b47eecf9..dc18da853 100644
--- a/app/javascript/packs/public.js
+++ b/app/javascript/packs/public.js
@@ -67,13 +67,6 @@ function main() {
       }, datetime, now, datetime.getFullYear());
     });
 
-    [].forEach.call(document.querySelectorAll('.modal-button'), (content) => {
-      content.addEventListener('click', (e) => {
-        e.preventDefault();
-        window.open(e.target.href, 'mastodon-intent', 'width=445,height=600,resizable=no,menubar=no,status=no,scrollbars=yes');
-      });
-    });
-
     const reactComponents = document.querySelectorAll('[data-component]');
     if (reactComponents.length > 0) {
       import(/* webpackChunkName: "containers/media_container" */ '../mastodon/containers/media_container')
@@ -119,6 +112,20 @@ function main() {
     return false;
   });
 
+  delegate(document, '.modal-button', 'click', e => {
+    e.preventDefault();
+
+    let href;
+
+    if (e.target.nodeName !== 'A') {
+      href = e.target.parentNode.href;
+    } else {
+      href = e.target.href;
+    }
+
+    window.open(href, 'mastodon-intent', 'width=445,height=600,resizable=no,menubar=no,status=no,scrollbars=yes');
+  });
+
   delegate(document, '#account_display_name', 'input', ({ target }) => {
     const nameCounter = document.querySelector('.name-counter');
     const name        = document.querySelector('.card .display-name strong');
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index 931f1aa0d..cfd8e5ad4 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -628,6 +628,7 @@
   overflow: hidden;
   white-space: pre-wrap;
   padding-top: 2px;
+  color: $primary-text-color;
 
   &:focus {
     outline: 0;
diff --git a/app/javascript/styles/mastodon/stream_entries.scss b/app/javascript/styles/mastodon/stream_entries.scss
index 9e2aa720c..03bbd84db 100644
--- a/app/javascript/styles/mastodon/stream_entries.scss
+++ b/app/javascript/styles/mastodon/stream_entries.scss
@@ -3,6 +3,7 @@
   border-radius: 4px;
   overflow: hidden;
   margin-bottom: 10px;
+  text-align: left;
 
   @media screen and (max-width: $no-gap-breakpoint) {
     margin-bottom: 0;
@@ -63,6 +64,10 @@
       }
     }
   }
+
+  &--highlighted .entry {
+    background: lighten($ui-base-color, 8%);
+  }
 }
 
 .button.logo-button {
diff --git a/app/models/remote_follow.rb b/app/models/remote_follow.rb
index 070144e2d..2537de36c 100644
--- a/app/models/remote_follow.rb
+++ b/app/models/remote_follow.rb
@@ -22,6 +22,10 @@ class RemoteFollow
     addressable_template.expand(uri: account.local_username_and_domain).to_s
   end
 
+  def interact_address_for(status)
+    addressable_template.expand(uri: ActivityPub::TagManager.instance.uri_for(status)).to_s
+  end
+
   private
 
   def populate_template
diff --git a/app/serializers/webfinger_serializer.rb b/app/serializers/webfinger_serializer.rb
index f80d12c02..8c0b07702 100644
--- a/app/serializers/webfinger_serializer.rb
+++ b/app/serializers/webfinger_serializer.rb
@@ -20,7 +20,7 @@ class WebfingerSerializer < ActiveModel::Serializer
       { rel: 'self', type: 'application/activity+json', href: account_url(object) },
       { rel: 'salmon', href: api_salmon_url(object.id) },
       { rel: 'magic-public-key', href: "data:application/magic-public-key,#{object.magic_key}" },
-      { rel: 'http://ostatus.org/schema/1.0/subscribe', template: "#{authorize_follow_url}?acct={uri}" },
+      { rel: 'http://ostatus.org/schema/1.0/subscribe', template: "#{authorize_interaction_url}?uri={uri}" },
     ]
   end
 end
diff --git a/app/views/authorize_follows/show.html.haml b/app/views/authorize_follows/show.html.haml
deleted file mode 100644
index 90e65b34f..000000000
--- a/app/views/authorize_follows/show.html.haml
+++ /dev/null
@@ -1,17 +0,0 @@
-- content_for :page_title do
-  = t('authorize_follow.title', acct: @account.acct)
-
-.form-container
-  .follow-prompt
-    = render 'application/card', account: @account
-
-  - if current_account.following?(@account)
-    .flash-message
-      %strong
-        = t('authorize_follow.already_following')
-    = render 'post_follow_actions'
-
-  - else
-    = form_tag authorize_follow_path, method: :post, class: 'simple_form' do
-      = hidden_field_tag :acct, @account.acct
-      = button_tag t('authorize_follow.follow'), type: :submit
diff --git a/app/views/authorize_follows/_post_follow_actions.html.haml b/app/views/authorize_interactions/_post_follow_actions.html.haml
index 2a9c062e9..561c60137 100644
--- a/app/views/authorize_follows/_post_follow_actions.html.haml
+++ b/app/views/authorize_interactions/_post_follow_actions.html.haml
@@ -1,4 +1,4 @@
 .post-follow-actions
-  %div= link_to t('authorize_follow.post_follow.web'), web_url("accounts/#{@account.id}"), class: 'button button--block'
-  %div= link_to t('authorize_follow.post_follow.return'), TagManager.instance.url_for(@account), class: 'button button--block'
+  %div= link_to t('authorize_follow.post_follow.web'), web_url("accounts/#{@resource.id}"), class: 'button button--block'
+  %div= link_to t('authorize_follow.post_follow.return'), TagManager.instance.url_for(@resource), class: 'button button--block'
   %div= t('authorize_follow.post_follow.close')
diff --git a/app/views/authorize_follows/error.html.haml b/app/views/authorize_interactions/error.html.haml
index 88d33b68d..88d33b68d 100644
--- a/app/views/authorize_follows/error.html.haml
+++ b/app/views/authorize_interactions/error.html.haml
diff --git a/app/views/authorize_interactions/show.html.haml b/app/views/authorize_interactions/show.html.haml
new file mode 100644
index 000000000..7ca9b98c1
--- /dev/null
+++ b/app/views/authorize_interactions/show.html.haml
@@ -0,0 +1,18 @@
+- content_for :page_title do
+  = t('authorize_follow.title', acct: @resource.acct)
+
+.form-container
+  .follow-prompt
+    = render 'application/card', account: @resource
+
+  - if current_account.following?(@resource)
+    .flash-message
+      %strong
+        = t('authorize_follow.already_following')
+
+    = render 'post_follow_actions'
+  - else
+    = form_tag authorize_interaction_path, method: :post, class: 'simple_form' do
+      = hidden_field_tag :action, :follow
+      = hidden_field_tag :acct, @resource.acct
+      = button_tag t('authorize_follow.follow'), type: :submit
diff --git a/app/views/authorize_follows/success.html.haml b/app/views/authorize_interactions/success.html.haml
index cf9cb50ea..47fd09767 100644
--- a/app/views/authorize_follows/success.html.haml
+++ b/app/views/authorize_interactions/success.html.haml
@@ -1,13 +1,13 @@
 - content_for :page_title do
-  = t('authorize_follow.title', acct: @account.acct)
+  = t('authorize_follow.title', acct: @resource.acct)
 
 .form-container
   .follow-prompt
-    - if @account.locked?
+    - if @resource.locked?
       %h2= t('authorize_follow.follow_request')
     - else
       %h2= t('authorize_follow.following')
 
-    = render 'application/card', account: @account
+    = render 'application/card', account: @resource
 
   = render 'post_follow_actions'
diff --git a/app/views/layouts/modal.html.haml b/app/views/layouts/modal.html.haml
index 325b4ec72..b73068459 100644
--- a/app/views/layouts/modal.html.haml
+++ b/app/views/layouts/modal.html.haml
@@ -2,7 +2,7 @@
   = javascript_pack_tag 'public', integrity: true, crossorigin: 'anonymous'
 
 - content_for :content do
-  - if user_signed_in?
+  - if user_signed_in? && !@hide_header
     .account-header
       .avatar= image_tag current_account.avatar.url(:original)
       .name
diff --git a/app/views/remote_interaction/new.html.haml b/app/views/remote_interaction/new.html.haml
new file mode 100644
index 000000000..7357546b6
--- /dev/null
+++ b/app/views/remote_interaction/new.html.haml
@@ -0,0 +1,17 @@
+.form-container
+  .follow-prompt
+    %h2= t('remote_interaction.prompt')
+
+    .public-layout
+      .activity-stream.activity-stream--highlighted
+        = render 'stream_entries/status', status: @status
+
+  = simple_form_for @remote_follow, as: :remote_follow, url: remote_interaction_path(@status) do |f|
+    = render 'shared/error_messages', object: @remote_follow
+
+    = f.input :acct, placeholder: t('remote_follow.acct'), input_html: { autocapitalize: 'none', autocorrect: 'off' }
+
+    .actions
+      = f.button :button, t('remote_interaction.proceed'), type: :submit
+
+    %p.hint.subtle-hint= t('remote_follow.no_account_html', sign_up_path: open_registrations? ? new_user_registration_path : 'https://joinmastodon.org/#getting-started')
diff --git a/app/views/stream_entries/_detailed_status.html.haml b/app/views/stream_entries/_detailed_status.html.haml
index aa160b979..a7c767816 100644
--- a/app/views/stream_entries/_detailed_status.html.haml
+++ b/app/views/stream_entries/_detailed_status.html.haml
@@ -39,6 +39,11 @@
       - else
         = link_to status.application.name, status.application.website, class: 'detailed-status__application', target: '_blank', rel: 'noopener'
       ·
+    = link_to remote_interaction_path(status), class: 'modal-button detailed-status__link' do
+      = fa_icon('reply')
+      %span.detailed-status__reblogs>= number_to_human status.replies_count, strip_insignificant_zeros: true
+      = " "
+    ·
     - if status.direct_visibility?
       %span.detailed-status__link<
         = fa_icon('envelope')
@@ -46,13 +51,15 @@
       %span.detailed-status__link<
         = fa_icon('lock')
     - else
-      %span.detailed-status__link<
+      = link_to remote_interaction_path(status), class: 'modal-button detailed-status__link' do
         = fa_icon('retweet')
-        %span.detailed-status__reblogs= number_to_human status.reblogs_count, strip_insignificant_zeros: true
+        %span.detailed-status__reblogs>= number_to_human status.reblogs_count, strip_insignificant_zeros: true
+        = " "
     ·
-    %span.detailed-status__link<
+    = link_to remote_interaction_path(status), class: 'modal-button detailed-status__link' do
       = fa_icon('star')
-      %span.detailed-status__favorites= number_to_human status.favourites_count, strip_insignificant_zeros: true
+      %span.detailed-status__favorites>= number_to_human status.favourites_count, strip_insignificant_zeros: true
+      = " "
 
     - if user_signed_in?
       ·
diff --git a/app/views/stream_entries/_simple_status.html.haml b/app/views/stream_entries/_simple_status.html.haml
index 676d367ca..ec8b69bb6 100644
--- a/app/views/stream_entries/_simple_status.html.haml
+++ b/app/views/stream_entries/_simple_status.html.haml
@@ -29,14 +29,16 @@
       = react_component :media_gallery, height: 343, sensitive: status.sensitive? && !current_account&.user&.setting_display_sensitive_media, 'autoPlayGif': current_account&.user&.setting_auto_play_gif, media: status.media_attachments.map { |a| ActiveModelSerializers::SerializableResource.new(a, serializer: REST::MediaAttachmentSerializer).as_json }
 
   .status__action-bar
-    .status__action-bar-button.static-icon-button<
+    .status__action-bar__counter
+      = link_to remote_interaction_path(status), class: 'status__action-bar-button icon-button modal-button', style: 'font-size: 18px; width: 23.1429px; height: 23.1429px; line-height: 23.15px;' do
+        = fa_icon 'reply fw'
+      .status__action-bar__counter__label= obscured_counter status.replies_count
+    = link_to remote_interaction_path(status), class: 'status__action-bar-button icon-button modal-button', style: 'font-size: 18px; width: 23.1429px; height: 23.1429px; line-height: 23.15px;' do
       - if status.public_visibility? || status.unlisted_visibility?
         = fa_icon 'retweet fw'
-        %span.detailed-status__reblogs= number_to_human status.reblogs_count, strip_insignificant_zeros: true
       - elsif status.private_visibility?
         = fa_icon 'lock fw'
       - else
         = fa_icon 'envelope fw'
-    .status__action-bar-button.static-icon-button<
+    = link_to remote_interaction_path(status), class: 'status__action-bar-button icon-button modal-button', style: 'font-size: 18px; width: 23.1429px; height: 23.1429px; line-height: 23.15px;' do
       = fa_icon 'star fw'
-      %span.detailed-status__favorites= number_to_human status.favourites_count, strip_insignificant_zeros: true
diff --git a/app/views/stream_entries/show.html.haml b/app/views/stream_entries/show.html.haml
index 9da6245dc..2edc155bf 100644
--- a/app/views/stream_entries/show.html.haml
+++ b/app/views/stream_entries/show.html.haml
@@ -19,7 +19,7 @@
 
 .grid
   .column-0
-    .activity-stream.activity-stream-headless.h-entry
+    .activity-stream.h-entry
       = render partial: "stream_entries/#{@type}", locals: { @type.to_sym => @stream_entry.activity, include_threads: true }
   .column-1
     = render 'application/sidebar'
diff --git a/app/views/well_known/webfinger/show.xml.ruby b/app/views/well_known/webfinger/show.xml.ruby
index 4352a24e9..968c8c138 100644
--- a/app/views/well_known/webfinger/show.xml.ruby
+++ b/app/views/well_known/webfinger/show.xml.ruby
@@ -37,7 +37,7 @@ doc << Ox::Element.new('XRD').tap do |xrd|
 
   xrd << Ox::Element.new('Link').tap do |link|
     link['rel']      = 'http://ostatus.org/schema/1.0/subscribe'
-    link['template'] = "#{authorize_follow_url}?acct={uri}"
+    link['template'] = "#{authorize_interaction_url}?acct={uri}"
   end
 end
 
diff --git a/config/brakeman.ignore b/config/brakeman.ignore
index e8956639c..40fef7283 100644
--- a/config/brakeman.ignore
+++ b/config/brakeman.ignore
@@ -1,14 +1,34 @@
 {
   "ignored_warnings": [
     {
+      "warning_type": "SQL Injection",
+      "warning_code": 0,
+      "fingerprint": "04dbbc249b989db2e0119bbb0f59c9818e12889d2b97c529cdc0b1526002ba4b",
+      "check_name": "SQL",
+      "message": "Possible SQL injection",
+      "file": "app/models/report.rb",
+      "line": 86,
+      "link": "https://brakemanscanner.org/docs/warning_types/sql_injection/",
+      "code": "Admin::ActionLog.from(\"(#{[Admin::ActionLog.where(:target_type => \"Report\", :target_id => id, :created_at => ((created_at..updated_at))).unscope(:order), Admin::ActionLog.where(:target_type => \"Account\", :target_id => target_account_id, :created_at => ((created_at..updated_at))).unscope(:order), Admin::ActionLog.where(:target_type => \"Status\", :target_id => status_ids, :created_at => ((created_at..updated_at))).unscope(:order)].map do\n \"(#{query.to_sql})\"\n end.join(\" UNION ALL \")}) AS admin_action_logs\")",
+      "render_path": null,
+      "location": {
+        "type": "method",
+        "class": "Report",
+        "method": "history"
+      },
+      "user_input": "Admin::ActionLog.where(:target_type => \"Status\", :target_id => status_ids, :created_at => ((created_at..updated_at))).unscope(:order)",
+      "confidence": "High",
+      "note": ""
+    },
+    {
       "warning_type": "Cross-Site Scripting",
       "warning_code": 4,
       "fingerprint": "0adbe361b91afff22ba51e5fc2275ec703cc13255a0cb3eecd8dab223ab9f61e",
       "check_name": "LinkToHref",
       "message": "Potentially unsafe model attribute in link_to href",
       "file": "app/views/admin/accounts/show.html.haml",
-      "line": 147,
-      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "line": 167,
+      "link": "https://brakemanscanner.org/docs/warning_types/link_to_href",
       "code": "link_to(Account.find(params[:id]).inbox_url, Account.find(params[:id]).inbox_url)",
       "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":18,"file":"app/controllers/admin/accounts_controller.rb"}],
       "location": {
@@ -26,8 +46,8 @@
       "check_name": "LinkToHref",
       "message": "Potentially unsafe model attribute in link_to href",
       "file": "app/views/admin/accounts/show.html.haml",
-      "line": 153,
-      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "line": 173,
+      "link": "https://brakemanscanner.org/docs/warning_types/link_to_href",
       "code": "link_to(Account.find(params[:id]).shared_inbox_url, Account.find(params[:id]).shared_inbox_url)",
       "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":18,"file":"app/controllers/admin/accounts_controller.rb"}],
       "location": {
@@ -45,8 +65,8 @@
       "check_name": "LinkToHref",
       "message": "Potentially unsafe model attribute in link_to href",
       "file": "app/views/admin/accounts/show.html.haml",
-      "line": 57,
-      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "line": 75,
+      "link": "https://brakemanscanner.org/docs/warning_types/link_to_href",
       "code": "link_to(Account.find(params[:id]).url, Account.find(params[:id]).url)",
       "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":18,"file":"app/controllers/admin/accounts_controller.rb"}],
       "location": {
@@ -58,6 +78,26 @@
       "note": ""
     },
     {
+      "warning_type": "Mass Assignment",
+      "warning_code": 105,
+      "fingerprint": "28d81cc22580ef76e912b077b245f353499aa27b3826476667224c00227af2a9",
+      "check_name": "PermitAttributes",
+      "message": "Potentially dangerous key allowed for mass assignment",
+      "file": "app/controllers/admin/reports_controller.rb",
+      "line": 86,
+      "link": "https://brakemanscanner.org/docs/warning_types/mass_assignment/",
+      "code": "params.permit(:account_id, :resolved, :target_account_id)",
+      "render_path": null,
+      "location": {
+        "type": "method",
+        "class": "Admin::ReportsController",
+        "method": "filter_params"
+      },
+      "user_input": ":account_id",
+      "confidence": "High",
+      "note": ""
+    },
+    {
       "warning_type": "Dynamic Render Path",
       "warning_code": 15,
       "fingerprint": "44d3f14e05d8fbb5b23e13ac02f15aa38b2a2f0f03b9ba76bab7f98e155a4a4e",
@@ -65,9 +105,9 @@
       "message": "Render path contains parameter value",
       "file": "app/views/stream_entries/embed.html.haml",
       "line": 3,
-      "link": "http://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
+      "link": "https://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
       "code": "render(action => \"stream_entries/#{Account.find_local!(params[:account_username]).statuses.find(params[:id]).stream_entry.activity_type.downcase}\", { Account.find_local!(params[:account_username]).statuses.find(params[:id]).stream_entry.activity_type.downcase.to_sym => Account.find_local!(params[:account_username]).statuses.find(params[:id]).stream_entry.activity, :centered => true })",
-      "render_path": [{"type":"controller","class":"StatusesController","method":"embed","line":45,"file":"app/controllers/statuses_controller.rb"}],
+      "render_path": [{"type":"controller","class":"StatusesController","method":"embed","line":58,"file":"app/controllers/statuses_controller.rb"}],
       "location": {
         "type": "template",
         "template": "stream_entries/embed"
@@ -83,8 +123,8 @@
       "check_name": "Render",
       "message": "Render path contains parameter value",
       "file": "app/views/admin/action_logs/index.html.haml",
-      "line": 5,
-      "link": "http://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
+      "line": 4,
+      "link": "https://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
       "code": "render(action => Admin::ActionLog.page(params[:page]), {})",
       "render_path": [{"type":"controller","class":"Admin::ActionLogsController","method":"index","line":7,"file":"app/controllers/admin/action_logs_controller.rb"}],
       "location": {
@@ -96,14 +136,34 @@
       "note": ""
     },
     {
+      "warning_type": "Redirect",
+      "warning_code": 18,
+      "fingerprint": "5fad11cd67f905fab9b1d5739d01384a1748ebe78c5af5ac31518201925265a7",
+      "check_name": "Redirect",
+      "message": "Possible unprotected redirect",
+      "file": "app/controllers/remote_interaction_controller.rb",
+      "line": 20,
+      "link": "https://brakemanscanner.org/docs/warning_types/redirect/",
+      "code": "redirect_to(RemoteFollow.new(resource_params).interact_address_for(Status.find(params[:id])))",
+      "render_path": null,
+      "location": {
+        "type": "method",
+        "class": "RemoteInteractionController",
+        "method": "create"
+      },
+      "user_input": "RemoteFollow.new(resource_params).interact_address_for(Status.find(params[:id]))",
+      "confidence": "High",
+      "note": ""
+    },
+    {
       "warning_type": "Cross-Site Scripting",
       "warning_code": 4,
       "fingerprint": "64b5b2a02ede9c2b3598881eb5a466d63f7d27fe0946aa00d570111ec7338d2e",
       "check_name": "LinkToHref",
       "message": "Potentially unsafe model attribute in link_to href",
       "file": "app/views/admin/accounts/show.html.haml",
-      "line": 156,
-      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "line": 176,
+      "link": "https://brakemanscanner.org/docs/warning_types/link_to_href",
       "code": "link_to(Account.find(params[:id]).followers_url, Account.find(params[:id]).followers_url)",
       "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":18,"file":"app/controllers/admin/accounts_controller.rb"}],
       "location": {
@@ -121,8 +181,8 @@
       "check_name": "LinkToHref",
       "message": "Potentially unsafe model attribute in link_to href",
       "file": "app/views/admin/accounts/show.html.haml",
-      "line": 130,
-      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "line": 149,
+      "link": "https://brakemanscanner.org/docs/warning_types/link_to_href",
       "code": "link_to(Account.find(params[:id]).salmon_url, Account.find(params[:id]).salmon_url)",
       "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":18,"file":"app/controllers/admin/accounts_controller.rb"}],
       "location": {
@@ -141,7 +201,7 @@
       "message": "Render path contains parameter value",
       "file": "app/views/admin/custom_emojis/index.html.haml",
       "line": 45,
-      "link": "http://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
+      "link": "https://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
       "code": "render(action => filtered_custom_emojis.eager_load(:local_counterpart).page(params[:page]), {})",
       "render_path": [{"type":"controller","class":"Admin::CustomEmojisController","method":"index","line":11,"file":"app/controllers/admin/custom_emojis_controller.rb"}],
       "location": {
@@ -160,7 +220,7 @@
       "message": "Possible SQL injection",
       "file": "lib/mastodon/snowflake.rb",
       "line": 87,
-      "link": "http://brakemanscanner.org/docs/warning_types/sql_injection/",
+      "link": "https://brakemanscanner.org/docs/warning_types/sql_injection/",
       "code": "connection.execute(\"        CREATE OR REPLACE FUNCTION timestamp_id(table_name text)\\n        RETURNS bigint AS\\n        $$\\n          DECLARE\\n            time_part bigint;\\n            sequence_base bigint;\\n            tail bigint;\\n          BEGIN\\n            time_part := (\\n              -- Get the time in milliseconds\\n              ((date_part('epoch', now()) * 1000))::bigint\\n              -- And shift it over two bytes\\n              << 16);\\n\\n            sequence_base := (\\n              'x' ||\\n              -- Take the first two bytes (four hex characters)\\n              substr(\\n                -- Of the MD5 hash of the data we documented\\n                md5(table_name ||\\n                  '#{SecureRandom.hex(16)}' ||\\n                  time_part::text\\n                ),\\n                1, 4\\n              )\\n            -- And turn it into a bigint\\n            )::bit(16)::bigint;\\n\\n            -- Finally, add our sequence number to our base, and chop\\n            -- it to the last two bytes\\n            tail := (\\n              (sequence_base + nextval(table_name || '_id_seq'))\\n              & 65535);\\n\\n            -- Return the time part and the sequence part. OR appears\\n            -- faster here than addition, but they're equivalent:\\n            -- time_part has no trailing two bytes, and tail is only\\n            -- the last two bytes.\\n            RETURN time_part | tail;\\n          END\\n        $$ LANGUAGE plpgsql VOLATILE;\\n\")",
       "render_path": null,
       "location": {
@@ -180,7 +240,7 @@
       "message": "Render path contains parameter value",
       "file": "app/views/admin/accounts/index.html.haml",
       "line": 67,
-      "link": "http://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
+      "link": "https://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
       "code": "render(action => filtered_accounts.page(params[:page]), {})",
       "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"index","line":12,"file":"app/controllers/admin/accounts_controller.rb"}],
       "location": {
@@ -192,25 +252,6 @@
       "note": ""
     },
     {
-      "warning_type": "Cross-Site Request Forgery",
-      "warning_code": 7,
-      "fingerprint": "ab491f72606337a348482d006eb67a3b1616685fd48644d5ac909bbcd62a5000",
-      "check_name": "ForgerySetting",
-      "message": "'protect_from_forgery' should be called in WellKnown::HostMetaController",
-      "file": "app/controllers/well_known/host_meta_controller.rb",
-      "line": 4,
-      "link": "http://brakemanscanner.org/docs/warning_types/cross-site_request_forgery/",
-      "code": null,
-      "render_path": null,
-      "location": {
-        "type": "controller",
-        "controller": "WellKnown::HostMetaController"
-      },
-      "user_input": null,
-      "confidence": "High",
-      "note": ""
-    },
-    {
       "warning_type": "Redirect",
       "warning_code": 18,
       "fingerprint": "ba699ddcc6552c422c4ecd50d2cd217f616a2446659e185a50b05a0f2dad8d33",
@@ -218,7 +259,7 @@
       "message": "Possible unprotected redirect",
       "file": "app/controllers/media_controller.rb",
       "line": 10,
-      "link": "http://brakemanscanner.org/docs/warning_types/redirect/",
+      "link": "https://brakemanscanner.org/docs/warning_types/redirect/",
       "code": "redirect_to(MediaAttachment.attached.find_by!(:shortcode => ((params[:id] or params[:medium_id]))).file.url(:original))",
       "render_path": null,
       "location": {
@@ -237,8 +278,8 @@
       "check_name": "LinkToHref",
       "message": "Potentially unsafe model attribute in link_to href",
       "file": "app/views/admin/accounts/show.html.haml",
-      "line": 119,
-      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "line": 138,
+      "link": "https://brakemanscanner.org/docs/warning_types/link_to_href",
       "code": "link_to(Account.find(params[:id]).remote_url, Account.find(params[:id]).remote_url)",
       "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":18,"file":"app/controllers/admin/accounts_controller.rb"}],
       "location": {
@@ -256,8 +297,8 @@
       "check_name": "Redirect",
       "message": "Possible unprotected redirect",
       "file": "app/controllers/remote_follow_controller.rb",
-      "line": 18,
-      "link": "http://brakemanscanner.org/docs/warning_types/redirect/",
+      "line": 19,
+      "link": "https://brakemanscanner.org/docs/warning_types/redirect/",
       "code": "redirect_to(RemoteFollow.new(resource_params).subscribe_address_for(Account.find_local!(params[:account_username])))",
       "render_path": null,
       "location": {
@@ -276,8 +317,8 @@
       "check_name": "Render",
       "message": "Render path contains parameter value",
       "file": "app/views/admin/reports/index.html.haml",
-      "line": 25,
-      "link": "http://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
+      "line": 22,
+      "link": "https://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
       "code": "render(action => filtered_reports.page(params[:page]), {})",
       "render_path": [{"type":"controller","class":"Admin::ReportsController","method":"index","line":10,"file":"app/controllers/admin/reports_controller.rb"}],
       "location": {
@@ -289,33 +330,14 @@
       "note": ""
     },
     {
-      "warning_type": "Cross-Site Request Forgery",
-      "warning_code": 7,
-      "fingerprint": "d4278f04e807ec58a23925f8ab31fad5e84692f2fb9f2f57e7931aff05d57cf8",
-      "check_name": "ForgerySetting",
-      "message": "'protect_from_forgery' should be called in WellKnown::WebfingerController",
-      "file": "app/controllers/well_known/webfinger_controller.rb",
-      "line": 4,
-      "link": "http://brakemanscanner.org/docs/warning_types/cross-site_request_forgery/",
-      "code": null,
-      "render_path": null,
-      "location": {
-        "type": "controller",
-        "controller": "WellKnown::WebfingerController"
-      },
-      "user_input": null,
-      "confidence": "High",
-      "note": ""
-    },
-    {
       "warning_type": "Cross-Site Scripting",
       "warning_code": 4,
       "fingerprint": "e04aafe1e06cf8317fb6ac0a7f35783e45aa1274272ee6eaf28d39adfdad489b",
       "check_name": "LinkToHref",
       "message": "Potentially unsafe model attribute in link_to href",
       "file": "app/views/admin/accounts/show.html.haml",
-      "line": 150,
-      "link": "http://brakemanscanner.org/docs/warning_types/link_to_href",
+      "line": 170,
+      "link": "https://brakemanscanner.org/docs/warning_types/link_to_href",
       "code": "link_to(Account.find(params[:id]).outbox_url, Account.find(params[:id]).outbox_url)",
       "render_path": [{"type":"controller","class":"Admin::AccountsController","method":"show","line":18,"file":"app/controllers/admin/accounts_controller.rb"}],
       "location": {
@@ -327,16 +349,36 @@
       "note": ""
     },
     {
+      "warning_type": "Mass Assignment",
+      "warning_code": 105,
+      "fingerprint": "e867661b2c9812bc8b75a5df12b28e2a53ab97015de0638b4e732fe442561b28",
+      "check_name": "PermitAttributes",
+      "message": "Potentially dangerous key allowed for mass assignment",
+      "file": "app/controllers/api/v1/reports_controller.rb",
+      "line": 42,
+      "link": "https://brakemanscanner.org/docs/warning_types/mass_assignment/",
+      "code": "params.permit(:account_id, :comment, :forward, :status_ids => ([]))",
+      "render_path": null,
+      "location": {
+        "type": "method",
+        "class": "Api::V1::ReportsController",
+        "method": "report_params"
+      },
+      "user_input": ":account_id",
+      "confidence": "High",
+      "note": ""
+    },
+    {
       "warning_type": "Dynamic Render Path",
       "warning_code": 15,
       "fingerprint": "fbd0fc59adb5c6d44b60e02debb31d3af11719f534c9881e21435bbff87404d6",
       "check_name": "Render",
       "message": "Render path contains parameter value",
       "file": "app/views/stream_entries/show.html.haml",
-      "line": 24,
-      "link": "http://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
+      "line": 23,
+      "link": "https://brakemanscanner.org/docs/warning_types/dynamic_render_path/",
       "code": "render(partial => \"stream_entries/#{Account.find_local!(params[:account_username]).statuses.find(params[:id]).stream_entry.activity_type.downcase}\", { :locals => ({ Account.find_local!(params[:account_username]).statuses.find(params[:id]).stream_entry.activity_type.downcase.to_sym => Account.find_local!(params[:account_username]).statuses.find(params[:id]).stream_entry.activity, :include_threads => true }) })",
-      "render_path": [{"type":"controller","class":"StatusesController","method":"show","line":22,"file":"app/controllers/statuses_controller.rb"}],
+      "render_path": [{"type":"controller","class":"StatusesController","method":"show","line":30,"file":"app/controllers/statuses_controller.rb"}],
       "location": {
         "type": "template",
         "template": "stream_entries/show"
@@ -346,6 +388,6 @@
       "note": ""
     }
   ],
-  "updated": "2018-02-16 06:42:53 +0100",
-  "brakeman_version": "4.0.1"
+  "updated": "2018-08-18 00:49:25 +0200",
+  "brakeman_version": "4.2.1"
 }
diff --git a/config/locales/en.yml b/config/locales/en.yml
index cc24a02cf..90086103c 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -655,11 +655,14 @@ en:
     publishing: Publishing
     web: Web
   remote_follow:
-    acct: Enter your username@domain you want to follow from
+    acct: Enter your username@domain you want to act from
     missing_resource: Could not find the required redirect URL for your account
     no_account_html: Don't have an account? You can <a href='%{sign_up_path}' target='_blank'>sign up here</a>
     proceed: Proceed to follow
     prompt: 'You are going to follow:'
+  remote_interaction:
+    proceed: Proceed to interact
+    prompt: 'You want to interact with this toot:'
   remote_unfollow:
     error: Error
     title: Title
diff --git a/config/routes.rb b/config/routes.rb
index 2983011d2..fd3b5fe4b 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -74,6 +74,9 @@ Rails.application.routes.draw do
   get '/@:account_username/:id', to: 'statuses#show', as: :short_account_status
   get '/@:account_username/:id/embed', to: 'statuses#embed', as: :embed_short_account_status
 
+  get  '/interact/:id', to: 'remote_interaction#new', as: :remote_interaction
+  post '/interact/:id', to: 'remote_interaction#create'
+
   namespace :settings do
     resource :profile, only: [:show, :update]
     resource :preferences, only: [:show, :update]
@@ -120,7 +123,7 @@ Rails.application.routes.draw do
 
   # Remote follow
   resource :remote_unfollow, only: [:create]
-  resource :authorize_follow, only: [:show, :create]
+  resource :authorize_interaction, only: [:show, :create]
   resource :share, only: [:show, :create]
 
   namespace :admin do
diff --git a/spec/controllers/authorize_follows_controller_spec.rb b/spec/controllers/authorize_interactions_controller_spec.rb
index 52971c724..81fd9ceb7 100644
--- a/spec/controllers/authorize_follows_controller_spec.rb
+++ b/spec/controllers/authorize_interactions_controller_spec.rb
@@ -2,7 +2,7 @@
 
 require 'rails_helper'
 
-describe AuthorizeFollowsController do
+describe AuthorizeInteractionsController do
   render_views
 
   describe 'GET #show' do
@@ -39,19 +39,19 @@ describe AuthorizeFollowsController do
         expect(service).to have_received(:call).with('missing@hostname')
       end
 
-      it 'sets account from url' do
+      it 'sets resource from url' do
         account = Account.new
         service = double
-        allow(FetchRemoteAccountService).to receive(:new).and_return(service)
+        allow(ResolveURLService).to receive(:new).and_return(service)
         allow(service).to receive(:call).with('http://example.com').and_return(account)
 
         get :show, params: { acct: 'http://example.com' }
 
         expect(response).to have_http_status(200)
-        expect(assigns(:account)).to eq account
+        expect(assigns(:resource)).to eq account
       end
 
-      it 'sets account from acct uri' do
+      it 'sets resource from acct uri' do
         account = Account.new
         service = double
         allow(ResolveAccountService).to receive(:new).and_return(service)
@@ -60,7 +60,7 @@ describe AuthorizeFollowsController do
         get :show, params: { acct: 'acct:found@hostname' }
 
         expect(response).to have_http_status(200)
-        expect(assigns(:account)).to eq account
+        expect(assigns(:resource)).to eq account
       end
     end
   end
@@ -75,8 +75,8 @@ describe AuthorizeFollowsController do
     end
 
     describe 'when signed in' do
-      let(:user) { Fabricate(:user) }
-      let(:account) { Fabricate(:account, user: user) }
+      let!(:user) { Fabricate(:user) }
+      let!(:account) { user.account }
 
       before do
         sign_in(user)
@@ -84,25 +84,26 @@ describe AuthorizeFollowsController do
 
       it 'shows error when account not found' do
         service = double
-        allow(FollowService).to receive(:new).and_return(service)
-        allow(service).to receive(:call).with(account, 'user@hostname').and_return(nil)
+
+        allow(ResolveAccountService).to receive(:new).and_return(service)
+        allow(service).to receive(:call).with('user@hostname').and_return(nil)
 
         post :create, params: { acct: 'acct:user@hostname' }
 
-        expect(service).to have_received(:call).with(account, 'user@hostname')
         expect(response).to render_template(:error)
       end
 
       it 'follows account when found' do
         target_account = Fabricate(:account)
-        result_account = double(target_account: target_account)
         service = double
-        allow(FollowService).to receive(:new).and_return(service)
-        allow(service).to receive(:call).with(account, 'user@hostname').and_return(result_account)
+
+        allow(ResolveAccountService).to receive(:new).and_return(service)
+        allow(service).to receive(:call).with('user@hostname').and_return(target_account)
 
         post :create, params: { acct: 'acct:user@hostname' }
 
-        expect(service).to have_received(:call).with(account, 'user@hostname')
+        expect(service).to have_received(:call).with('user@hostname')
+        expect(account.following?(target_account)).to be true
         expect(response).to render_template(:success)
       end
     end
diff --git a/spec/controllers/intents_controller_spec.rb b/spec/controllers/intents_controller_spec.rb
index 3dde7f835..ddfd5ea36 100644
--- a/spec/controllers/intents_controller_spec.rb
+++ b/spec/controllers/intents_controller_spec.rb
@@ -13,7 +13,7 @@ RSpec.describe IntentsController, type: :controller do
       context 'when host is follow' do
         let(:uri) { 'web+mastodon://follow?uri=test' }
 
-        it { is_expected.to redirect_to authorize_follow_path(acct: 'test') }
+        it { is_expected.to redirect_to authorize_interaction_path(uri: 'test') }
       end
 
       context 'when host is share' do