Add E2EE API (#13820)

9 files changed, 239 insertions, 18 deletions

diff --git a/app/controllers/activitypub/claims_controller.rb b/app/controllers/activitypub/claims_controller.rb
new file mode 100644
index 000000000..08ad952df
--- /dev/null
+++ b/app/controllers/activitypub/claims_controller.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class ActivityPub::ClaimsController < ActivityPub::BaseController
+  include SignatureVerification
+  include AccountOwnedConcern
+
+  skip_before_action :authenticate_user!
+
+  before_action :require_signature!
+  before_action :set_claim_result
+
+  def create
+    render json: @claim_result, serializer: ActivityPub::OneTimeKeySerializer
+  end
+
+  private
+
+  def set_claim_result
+    @claim_result = ::Keys::ClaimService.new.call(@account.id, params[:id])
+  end
+end
diff --git a/app/controllers/activitypub/collections_controller.rb b/app/controllers/activitypub/collections_controller.rb
index c1e7aa550..380de54f5 100644
--- a/app/controllers/activitypub/collections_controller.rb
+++ b/app/controllers/activitypub/collections_controller.rb
@@ -5,8 +5,9 @@ class ActivityPub::CollectionsController < ActivityPub::BaseController
   include AccountOwnedConcern
 
   before_action :require_signature!, if: :authorized_fetch_mode?
+  before_action :set_items
   before_action :set_size
-  before_action :set_statuses
+  before_action :set_type
   before_action :set_cache_headers
 
   def show
@@ -16,40 +17,53 @@ class ActivityPub::CollectionsController < ActivityPub::BaseController
 
   private
 
-  def set_statuses
-    @statuses = scope_for_collection
-    @statuses = cache_collection(@statuses, Status)
+  def set_items
+    case params[:id]
+    when 'featured'
+      @items = begin
+        # Because in public fetch mode we cache the response, there would be no
+        # benefit from performing the check below, since a blocked account or domain
+        # would likely be served the cache from the reverse proxy anyway
+
+        if authorized_fetch_mode? && !signed_request_account.nil? && (@account.blocking?(signed_request_account) || (!signed_request_account.domain.nil? && @account.domain_blocking?(signed_request_account.domain)))
+          []
+        else
+          cache_collection(@account.pinned_statuses, Status)
+        end
+      end
+    when 'devices'
+      @items = @account.devices
+    else
+      not_found
+    end
   end
 
   def set_size
     case params[:id]
-    when 'featured'
-      @size = @account.pinned_statuses.count
+    when 'featured', 'devices'
+      @size = @items.size
     else
       not_found
     end
   end
 
-  def scope_for_collection
+  def set_type
     case params[:id]
     when 'featured'
-      # Because in public fetch mode we cache the response, there would be no
-      # benefit from performing the check below, since a blocked account or domain
-      # would likely be served the cache from the reverse proxy anyway
-      if authorized_fetch_mode? && !signed_request_account.nil? && (@account.blocking?(signed_request_account) || (!signed_request_account.domain.nil? && @account.domain_blocking?(signed_request_account.domain)))
-        Status.none
-      else
-        @account.pinned_statuses
-      end
+      @type = :ordered
+    when 'devices'
+      @type = :unordered
+    else
+      not_found
     end
   end
 
   def collection_presenter
     ActivityPub::CollectionPresenter.new(
       id: account_collection_url(@account, params[:id]),
-      type: :ordered,
+      type: @type,
       size: @size,
-      items: @statuses
+      items: @items
     )
   end
 end
diff --git a/app/controllers/api/v1/crypto/deliveries_controller.rb b/app/controllers/api/v1/crypto/deliveries_controller.rb
new file mode 100644
index 000000000..aa9df6e03
--- /dev/null
+++ b/app/controllers/api/v1/crypto/deliveries_controller.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+class Api::V1::Crypto::DeliveriesController < Api::BaseController
+  before_action -> { doorkeeper_authorize! :crypto }
+  before_action :require_user!
+  before_action :set_current_device
+
+  def create
+    devices.each do |device_params|
+      DeliverToDeviceService.new.call(current_account, @current_device, device_params)
+    end
+
+    render_empty
+  end
+
+  private
+
+  def set_current_device
+    @current_device = Device.find_by!(access_token: doorkeeper_token)
+  end
+
+  def resource_params
+    params.require(:device)
+    params.permit(device: [:account_id, :device_id, :type, :body, :hmac])
+  end
+
+  def devices
+    Array(resource_params[:device])
+  end
+end
diff --git a/app/controllers/api/v1/crypto/encrypted_messages_controller.rb b/app/controllers/api/v1/crypto/encrypted_messages_controller.rb
new file mode 100644
index 000000000..a67b03eb4
--- /dev/null
+++ b/app/controllers/api/v1/crypto/encrypted_messages_controller.rb
@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+
+class Api::V1::Crypto::EncryptedMessagesController < Api::BaseController
+  LIMIT = 80
+
+  before_action -> { doorkeeper_authorize! :crypto }
+  before_action :require_user!
+  before_action :set_current_device
+
+  before_action :set_encrypted_messages,    only: :index
+  after_action  :insert_pagination_headers, only: :index
+
+  def index
+    render json: @encrypted_messages, each_serializer: REST::EncryptedMessageSerializer
+  end
+
+  def clear
+    @current_device.encrypted_messages.up_to(params[:up_to_id]).delete_all
+    render_empty
+  end
+
+  private
+
+  def set_current_device
+    @current_device = Device.find_by!(access_token: doorkeeper_token)
+  end
+
+  def set_encrypted_messages
+    @encrypted_messages = @current_device.encrypted_messages.paginate_by_id(limit_param(LIMIT), params_slice(:max_id, :since_id, :min_id))
+  end
+
+  def insert_pagination_headers
+    set_pagination_headers(next_path, prev_path)
+  end
+
+  def next_path
+    api_v1_encrypted_messages_url pagination_params(max_id: pagination_max_id) if records_continue?
+  end
+
+  def prev_path
+    api_v1_encrypted_messages_url pagination_params(min_id: pagination_since_id) unless @encrypted_messages.empty?
+  end
+
+  def pagination_max_id
+    @encrypted_messages.last.id
+  end
+
+  def pagination_since_id
+    @encrypted_messages.first.id
+  end
+
+  def records_continue?
+    @encrypted_messages.size == limit_param(LIMIT)
+  end
+
+  def pagination_params(core_params)
+    params.slice(:limit).permit(:limit).merge(core_params)
+  end
+end
diff --git a/app/controllers/api/v1/crypto/keys/claims_controller.rb b/app/controllers/api/v1/crypto/keys/claims_controller.rb
new file mode 100644
index 000000000..34b21a380
--- /dev/null
+++ b/app/controllers/api/v1/crypto/keys/claims_controller.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+class Api::V1::Crypto::Keys::ClaimsController < Api::BaseController
+  before_action -> { doorkeeper_authorize! :crypto }
+  before_action :require_user!
+  before_action :set_claim_results
+
+  def create
+    render json: @claim_results, each_serializer: REST::Keys::ClaimResultSerializer
+  end
+
+  private
+
+  def set_claim_results
+    @claim_results = devices.map { |device_params| ::Keys::ClaimService.new.call(current_account, device_params[:account_id], device_params[:device_id]) }.compact
+  end
+
+  def resource_params
+    params.permit(device: [:account_id, :device_id])
+  end
+
+  def devices
+    Array(resource_params[:device])
+  end
+end
diff --git a/app/controllers/api/v1/crypto/keys/counts_controller.rb b/app/controllers/api/v1/crypto/keys/counts_controller.rb
new file mode 100644
index 000000000..ffd7151b7
--- /dev/null
+++ b/app/controllers/api/v1/crypto/keys/counts_controller.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class Api::V1::Crypto::Keys::CountsController < Api::BaseController
+  before_action -> { doorkeeper_authorize! :crypto }
+  before_action :require_user!
+  before_action :set_current_device
+
+  def show
+    render json: { one_time_keys: @current_device.one_time_keys.count }
+  end
+
+  private
+
+  def set_current_device
+    @current_device = Device.find_by!(access_token: doorkeeper_token)
+  end
+end
diff --git a/app/controllers/api/v1/crypto/keys/queries_controller.rb b/app/controllers/api/v1/crypto/keys/queries_controller.rb
new file mode 100644
index 000000000..0851d797d
--- /dev/null
+++ b/app/controllers/api/v1/crypto/keys/queries_controller.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+class Api::V1::Crypto::Keys::QueriesController < Api::BaseController
+  before_action -> { doorkeeper_authorize! :crypto }
+  before_action :require_user!
+  before_action :set_accounts
+  before_action :set_query_results
+
+  def create
+    render json: @query_results, each_serializer: REST::Keys::QueryResultSerializer
+  end
+
+  private
+
+  def set_accounts
+    @accounts = Account.where(id: account_ids).includes(:devices)
+  end
+
+  def set_query_results
+    @query_results = @accounts.map { |account| ::Keys::QueryService.new.call(account) }.compact
+  end
+
+  def account_ids
+    Array(params[:id]).map(&:to_i)
+  end
+end
diff --git a/app/controllers/api/v1/crypto/keys/uploads_controller.rb b/app/controllers/api/v1/crypto/keys/uploads_controller.rb
new file mode 100644
index 000000000..fc4abf63b
--- /dev/null
+++ b/app/controllers/api/v1/crypto/keys/uploads_controller.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+class Api::V1::Crypto::Keys::UploadsController < Api::BaseController
+  before_action -> { doorkeeper_authorize! :crypto }
+  before_action :require_user!
+
+  def create
+    device = Device.find_or_initialize_by(access_token: doorkeeper_token)
+
+    device.transaction do
+      device.account = current_account
+      device.update!(resource_params[:device])
+
+      if resource_params[:one_time_keys].present? && resource_params[:one_time_keys].is_a?(Enumerable)
+        resource_params[:one_time_keys].each do |one_time_key_params|
+          device.one_time_keys.create!(one_time_key_params)
+        end
+      end
+    end
+
+    render json: device, serializer: REST::Keys::DeviceSerializer
+  end
+
+  private
+
+  def resource_params
+    params.permit(device: [:device_id, :name, :fingerprint_key, :identity_key], one_time_keys: [:key_id, :key, :signature])
+  end
+end
diff --git a/app/controllers/statuses_controller.rb b/app/controllers/statuses_controller.rb
index d362b97dc..67a6cc2ec 100644
--- a/app/controllers/statuses_controller.rb
+++ b/app/controllers/statuses_controller.rb
@@ -42,7 +42,7 @@ class StatusesController < ApplicationController
 
   def activity
     expires_in 3.minutes, public: @status.distributable? && public_fetch_mode?
-    render_with_cache json: @status, content_type: 'application/activity+json', serializer: ActivityPub::ActivitySerializer, adapter: ActivityPub::Adapter
+    render_with_cache json: ActivityPub::ActivityPresenter.from_status(@status), content_type: 'application/activity+json', serializer: ActivityPub::ActivitySerializer, adapter: ActivityPub::Adapter
   end
 
   def embed