102 lines
		
	
	
	
		
			2.8 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
			
		
		
	
	
			102 lines
		
	
	
	
		
			2.8 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
| # Pleroma: A lightweight social networking server
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| # Copyright © 2017-2021 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.Subscription do
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|   use Ecto.Schema
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| 
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|   import Ecto.Changeset
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| 
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|   alias Pleroma.Repo
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|   alias Pleroma.User
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|   alias Pleroma.Web.OAuth.Token
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|   alias Pleroma.Web.Push.Subscription
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| 
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|   @type t :: %__MODULE__{}
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| 
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|   schema "push_subscriptions" do
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|     belongs_to(:user, User, type: FlakeId.Ecto.CompatType)
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|     belongs_to(:token, Token)
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|     field(:endpoint, :string)
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|     field(:key_p256dh, :string)
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|     field(:key_auth, :string)
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|     field(:data, :map, default: %{})
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| 
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|     timestamps()
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|   end
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| 
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|   # credo:disable-for-next-line Credo.Check.Readability.MaxLineLength
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|   @supported_alert_types ~w[follow favourite mention reblog poll pleroma:chat_mention pleroma:emoji_reaction]a
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| 
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|   defp alerts(%{data: %{alerts: alerts}}) do
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|     alerts = Map.take(alerts, @supported_alert_types)
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|     %{"alerts" => alerts}
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|   end
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| 
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|   def enabled?(subscription, "follow_request") do
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|     enabled?(subscription, "follow")
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|   end
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| 
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|   def enabled?(subscription, alert_type) do
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|     get_in(subscription.data, ["alerts", alert_type])
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|   end
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| 
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|   def create(
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|         %User{} = user,
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|         %Token{} = token,
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|         %{
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|           subscription: %{
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|             endpoint: endpoint,
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|             keys: %{auth: key_auth, p256dh: key_p256dh}
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|           }
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|         } = params
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|       ) do
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|     Repo.insert(%Subscription{
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|       user_id: user.id,
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|       token_id: token.id,
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|       endpoint: endpoint,
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|       key_auth: ensure_base64_urlsafe(key_auth),
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|       key_p256dh: ensure_base64_urlsafe(key_p256dh),
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|       data: alerts(params)
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|     })
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|   end
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| 
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|   @doc "Gets subsciption by user & token"
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|   @spec get(User.t(), Token.t()) :: {:ok, t()} | {:error, :not_found}
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|   def get(%User{id: user_id}, %Token{id: token_id}) do
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|     case Repo.get_by(Subscription, user_id: user_id, token_id: token_id) do
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|       nil -> {:error, :not_found}
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|       subscription -> {:ok, subscription}
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|     end
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|   end
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| 
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|   def update(user, token, params) do
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|     with {:ok, subscription} <- get(user, token) do
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|       subscription
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|       |> change(data: alerts(params))
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|       |> Repo.update()
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|     end
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|   end
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| 
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|   def delete(user, token) do
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|     with {:ok, subscription} <- get(user, token),
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|          do: Repo.delete(subscription)
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|   end
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| 
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|   def delete_if_exists(user, token) do
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|     case get(user, token) do
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|       {:error, _} -> {:ok, nil}
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|       {:ok, sub} -> Repo.delete(sub)
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|     end
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|   end
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| 
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|   # Some webpush clients (e.g. iOS Toot!) use an non urlsafe base64 as an encoding for the key.
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|   # However, the web push rfs specify to use base64 urlsafe, and the `web_push_encryption` library
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|   # we use requires the key to be properly encoded. So we just convert base64 to urlsafe base64.
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|   defp ensure_base64_urlsafe(string) do
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|     string
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|     |> String.replace("+", "-")
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|     |> String.replace("/", "_")
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|     |> String.replace("=", "")
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|   end
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| end
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