94 lines
2.5 KiB
Elixir
94 lines
2.5 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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defmodule Pleroma.Web.Push.Subscription do
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use Ecto.Schema
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import Ecto.Changeset
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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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@type t :: %__MODULE__{}
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schema "push_subscriptions" do
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belongs_to(:user, User, type: Pleroma.FlakeId)
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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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timestamps()
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end
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@supported_alert_types ~w[follow favourite mention reblog]
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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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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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@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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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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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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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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# 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 we use
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# 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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