133 lines
		
	
	
	
		
			3.7 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
			
		
		
	
	
			133 lines
		
	
	
	
		
			3.7 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
| # Pleroma: A lightweight social networking server
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| # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
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| # SPDX-License-Identifier: AGPL-3.0-only
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| 
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| defmodule Pleroma.Web.Push.Impl do
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|   @moduledoc "The module represents implementation push web notification"
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| 
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|   alias Pleroma.Activity
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|   alias Pleroma.Notification
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|   alias Pleroma.Object
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|   alias Pleroma.Repo
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|   alias Pleroma.User
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|   alias Pleroma.Web.Metadata.Utils
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|   alias Pleroma.Web.Push.Subscription
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| 
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|   require Logger
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|   import Ecto.Query
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| 
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|   @types ["Create", "Follow", "Announce", "Like"]
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| 
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|   @doc "Performs sending notifications for user subscriptions"
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|   @spec perform_send(Notification.t()) :: list(any)
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|   def perform_send(
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|         %{activity: %{data: %{"type" => activity_type}, id: activity_id}, user_id: user_id} =
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|           notif
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|       )
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|       when activity_type in @types do
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|     actor = User.get_cached_by_ap_id(notif.activity.data["actor"])
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| 
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|     type = Activity.mastodon_notification_type(notif.activity)
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|     gcm_api_key = Application.get_env(:web_push_encryption, :gcm_api_key)
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|     avatar_url = User.avatar_url(actor)
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| 
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|     for subscription <- fetch_subsriptions(user_id),
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|         get_in(subscription.data, ["alerts", type]) do
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|       %{
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|         title: format_title(notif),
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|         access_token: subscription.token.token,
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|         body: format_body(notif, actor),
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|         notification_id: notif.id,
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|         notification_type: type,
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|         icon: avatar_url,
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|         preferred_locale: "en",
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|         pleroma: %{
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|           activity_id: activity_id
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|         }
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|       }
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|       |> Jason.encode!()
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|       |> push_message(build_sub(subscription), gcm_api_key, subscription)
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|     end
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|   end
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| 
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|   def perform_send(_) do
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|     Logger.warn("Unknown notification type")
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|     :error
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|   end
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| 
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|   @doc "Push message to web"
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|   def push_message(body, sub, api_key, subscription) do
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|     case WebPushEncryption.send_web_push(body, sub, api_key) do
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|       {:ok, %{status_code: code}} when 400 <= code and code < 500 ->
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|         Logger.debug("Removing subscription record")
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|         Repo.delete!(subscription)
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|         :ok
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| 
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|       {:ok, %{status_code: code}} when 200 <= code and code < 300 ->
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|         :ok
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| 
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|       {:ok, %{status_code: code}} ->
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|         Logger.error("Web Push Notification failed with code: #{code}")
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|         :error
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| 
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|       _ ->
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|         Logger.error("Web Push Notification failed with unknown error")
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|         :error
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|     end
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|   end
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| 
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|   @doc "Gets user subscriptions"
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|   def fetch_subsriptions(user_id) do
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|     Subscription
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|     |> where(user_id: ^user_id)
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|     |> preload(:token)
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|     |> Repo.all()
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|   end
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| 
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|   def build_sub(subscription) do
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|     %{
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|       keys: %{
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|         p256dh: subscription.key_p256dh,
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|         auth: subscription.key_auth
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|       },
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|       endpoint: subscription.endpoint
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|     }
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|   end
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| 
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|   def format_body(
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|         %{activity: %{data: %{"type" => "Create", "object" => %{"content" => content}}}},
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|         actor
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|       ) do
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|     "@#{actor.nickname}: #{Utils.scrub_html_and_truncate(content, 80)}"
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|   end
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| 
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|   def format_body(
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|         %{activity: %{data: %{"type" => "Announce", "object" => activity_id}}},
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|         actor
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|       ) do
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|     %Activity{data: %{"object" => %{"id" => object_id}}} = Activity.get_by_ap_id(activity_id)
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|     %Object{data: %{"content" => content}} = Object.get_by_ap_id(object_id)
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| 
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|     "@#{actor.nickname} repeated: #{Utils.scrub_html_and_truncate(content, 80)}"
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|   end
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| 
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|   def format_body(
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|         %{activity: %{data: %{"type" => type}}},
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|         actor
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|       )
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|       when type in ["Follow", "Like"] do
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|     case type do
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|       "Follow" -> "@#{actor.nickname} has followed you"
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|       "Like" -> "@#{actor.nickname} has favorited your post"
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|     end
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|   end
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| 
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|   def format_title(%{activity: %{data: %{"type" => type}}}) do
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|     case type do
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|       "Create" -> "New Mention"
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|       "Follow" -> "New Follower"
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|       "Announce" -> "New Repeat"
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|       "Like" -> "New Favorite"
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|     end
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|   end
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| end
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