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diff --git a/lib/pleroma/user/backup.ex b/lib/pleroma/user/backup.ex
index 74e0ec073..b7f00bbf7 100644
--- a/lib/pleroma/user/backup.ex
+++ b/lib/pleroma/user/backup.ex
@@ -1,387 +1,394 @@
# Pleroma: A lightweight social networking server
# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.User.Backup do
use Ecto.Schema
import Ecto.Changeset
import Ecto.Query
import Pleroma.Web.Gettext
require Logger
require Pleroma.Constants
alias Pleroma.Activity
alias Pleroma.Bookmark
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.User.Backup.State
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.Transmogrifier
alias Pleroma.Web.ActivityPub.UserView
alias Pleroma.Workers.BackupWorker
+ @type t :: %__MODULE__{}
+
schema "backups" do
field(:content_type, :string)
field(:file_name, :string)
field(:file_size, :integer, default: 0)
field(:processed, :boolean, default: false)
field(:state, State, default: :invalid)
field(:processed_number, :integer, default: 0)
belongs_to(:user, User, type: FlakeId.Ecto.CompatType)
timestamps()
end
@config_impl Application.compile_env(:pleroma, [__MODULE__, :config_impl], Pleroma.Config)
def create(user, admin_id \\ nil) do
with :ok <- validate_limit(user, admin_id),
{:ok, backup} <- user |> new() |> Repo.insert() do
BackupWorker.process(backup, admin_id)
end
end
def new(user) do
rand_str = :crypto.strong_rand_bytes(32) |> Base.url_encode64(padding: false)
datetime = Calendar.NaiveDateTime.Format.iso8601_basic(NaiveDateTime.utc_now())
name = "archive-#{user.nickname}-#{datetime}-#{rand_str}.zip"
%__MODULE__{
user_id: user.id,
content_type: "application/zip",
file_name: name,
state: :pending
}
end
def delete(backup) do
uploader = Pleroma.Config.get([Pleroma.Upload, :uploader])
with :ok <- uploader.delete_file(Path.join("backups", backup.file_name)) do
Repo.delete(backup)
end
end
defp validate_limit(_user, admin_id) when is_binary(admin_id), do: :ok
defp validate_limit(user, nil) do
case get_last(user.id) do
%__MODULE__{inserted_at: inserted_at} ->
days = Pleroma.Config.get([__MODULE__, :limit_days])
diff = Timex.diff(NaiveDateTime.utc_now(), inserted_at, :days)
if diff > days do
:ok
else
{:error,
dngettext(
"errors",
"Last export was less than a day ago",
"Last export was less than %{days} days ago",
days,
days: days
)}
end
nil ->
:ok
end
end
def get_last(user_id) do
__MODULE__
|> where(user_id: ^user_id)
|> order_by(desc: :id)
|> limit(1)
|> Repo.one()
end
def list(%User{id: user_id}) do
__MODULE__
|> where(user_id: ^user_id)
|> order_by(desc: :id)
|> Repo.all()
end
def remove_outdated(%__MODULE__{id: latest_id, user_id: user_id}) do
__MODULE__
|> where(user_id: ^user_id)
|> where([b], b.id != ^latest_id)
|> Repo.all()
|> Enum.each(&BackupWorker.delete/1)
end
def get(id), do: Repo.get(__MODULE__, id)
defp set_state(backup, state, processed_number \\ nil) do
struct =
%{state: state}
|> Pleroma.Maps.put_if_present(:processed_number, processed_number)
backup
|> cast(struct, [:state, :processed_number])
|> Repo.update()
end
def process(
%__MODULE__{} = backup,
processor_module \\ __MODULE__.Processor
) do
set_state(backup, :running, 0)
current_pid = self()
task =
Task.Supervisor.async_nolink(
Pleroma.TaskSupervisor,
processor_module,
:do_process,
[backup, current_pid]
)
wait_backup(backup, backup.processed_number, task)
end
defp wait_backup(backup, current_processed, task) do
wait_time = @config_impl.get([__MODULE__, :process_wait_time])
receive do
{:progress, new_processed} ->
total_processed = current_processed + new_processed
set_state(backup, :running, total_processed)
wait_backup(backup, total_processed, task)
{:DOWN, _ref, _proc, _pid, reason} ->
backup = get(backup.id)
if reason != :normal do
Logger.error("Backup #{backup.id} process ended abnormally: #{inspect(reason)}")
{:ok, backup} = set_state(backup, :failed)
cleanup(backup)
{:error,
%{
backup: backup,
reason: :exit,
details: reason
}}
else
{:ok, backup}
end
after
wait_time ->
Logger.error(
"Backup #{backup.id} timed out after no response for #{wait_time}ms, terminating"
)
Task.Supervisor.terminate_child(Pleroma.TaskSupervisor, task.pid)
{:ok, backup} = set_state(backup, :failed)
cleanup(backup)
{:error,
%{
backup: backup,
reason: :timeout
}}
end
end
@files ['actor.json', 'outbox.json', 'likes.json', 'bookmarks.json']
+ @spec export(Pleroma.User.Backup.t(), pid()) :: {:ok, String.t()} | :error
def export(%__MODULE__{} = backup, caller_pid) do
backup = Repo.preload(backup, :user)
dir = backup_tempdir(backup)
with :ok <- File.mkdir(dir),
:ok <- actor(dir, backup.user, caller_pid),
:ok <- statuses(dir, backup.user, caller_pid),
:ok <- likes(dir, backup.user, caller_pid),
:ok <- bookmarks(dir, backup.user, caller_pid),
- {:ok, zip_path} <- :zip.create(String.to_charlist(dir <> ".zip"), @files, cwd: dir),
+ {:ok, zip_path} <- :zip.create(backup.file_name, @files, cwd: dir),
{:ok, _} <- File.rm_rf(dir) do
- {:ok, to_string(zip_path)}
+ {:ok, zip_path}
+ else
+ _ -> :error
end
end
def dir(name) do
dir = Pleroma.Config.get([__MODULE__, :dir]) || System.tmp_dir!()
Path.join(dir, name)
end
def upload(%__MODULE__{} = backup, zip_path) do
uploader = Pleroma.Config.get([Pleroma.Upload, :uploader])
upload = %Pleroma.Upload{
name: backup.file_name,
tempfile: zip_path,
content_type: backup.content_type,
path: Path.join("backups", backup.file_name)
}
with {:ok, _} <- Pleroma.Uploaders.Uploader.put_file(uploader, upload),
:ok <- File.rm(zip_path) do
{:ok, upload}
end
end
defp actor(dir, user, caller_pid) do
with {:ok, json} <-
UserView.render("user.json", %{user: user})
|> Map.merge(%{"likes" => "likes.json", "bookmarks" => "bookmarks.json"})
|> Jason.encode() do
send(caller_pid, {:progress, 1})
File.write(Path.join(dir, "actor.json"), json)
end
end
defp write_header(file, name) do
IO.write(
file,
"""
{
"@context": "https://www.w3.org/ns/activitystreams",
"id": "#{name}.json",
"type": "OrderedCollection",
"orderedItems": [
"""
)
end
defp should_report?(num, chunk_size), do: rem(num, chunk_size) == 0
defp backup_tempdir(backup) do
name = String.trim_trailing(backup.file_name, ".zip")
dir(name)
end
defp cleanup(backup) do
dir = backup_tempdir(backup)
File.rm_rf(dir)
end
defp write(query, dir, name, fun, caller_pid) do
path = Path.join(dir, "#{name}.json")
chunk_size = Pleroma.Config.get([__MODULE__, :process_chunk_size])
with {:ok, file} <- File.open(path, [:write, :utf8]),
:ok <- write_header(file, name) do
total =
query
|> Pleroma.Repo.chunk_stream(chunk_size, _returns_as = :one, timeout: :infinity)
|> Enum.reduce(0, fn i, acc ->
with {:ok, data} <-
(try do
fun.(i)
rescue
e -> {:error, e}
end),
{:ok, str} <- Jason.encode(data),
:ok <- IO.write(file, str <> ",\n") do
if should_report?(acc + 1, chunk_size) do
send(caller_pid, {:progress, chunk_size})
end
acc + 1
else
{:error, e} ->
Logger.warning(
"Error processing backup item: #{inspect(e)}\n The item is: #{inspect(i)}"
)
acc
_ ->
acc
end
end)
send(caller_pid, {:progress, rem(total, chunk_size)})
with :ok <- :file.pwrite(file, {:eof, -2}, "\n],\n \"totalItems\": #{total}}") do
File.close(file)
end
end
end
defp bookmarks(dir, %{id: user_id} = _user, caller_pid) do
Bookmark
|> where(user_id: ^user_id)
|> join(:inner, [b], activity in assoc(b, :activity))
|> select([b, a], %{id: b.id, object: fragment("(?)->>'object'", a.data)})
|> write(dir, "bookmarks", fn a -> {:ok, a.object} end, caller_pid)
end
defp likes(dir, user, caller_pid) do
user.ap_id
|> Activity.Queries.by_actor()
|> Activity.Queries.by_type("Like")
|> select([like], %{id: like.id, object: fragment("(?)->>'object'", like.data)})
|> write(dir, "likes", fn a -> {:ok, a.object} end, caller_pid)
end
defp statuses(dir, user, caller_pid) do
opts =
%{}
|> Map.put(:type, ["Create", "Announce"])
|> Map.put(:actor_id, user.ap_id)
[
[Pleroma.Constants.as_public(), user.ap_id],
User.following(user),
Pleroma.List.memberships(user)
]
|> Enum.concat()
|> ActivityPub.fetch_activities_query(opts)
|> write(
dir,
"outbox",
fn a ->
with {:ok, activity} <- Transmogrifier.prepare_outgoing(a.data) do
{:ok, Map.delete(activity, "@context")}
end
end,
caller_pid
)
end
end
defmodule Pleroma.User.Backup.ProcessorAPI do
@callback do_process(%Pleroma.User.Backup{}, pid()) ::
{:ok, %Pleroma.User.Backup{}} | {:error, any()}
end
defmodule Pleroma.User.Backup.Processor do
@behaviour Pleroma.User.Backup.ProcessorAPI
alias Pleroma.Repo
alias Pleroma.User.Backup
import Ecto.Changeset
@impl true
def do_process(backup, current_pid) do
with {:ok, zip_file} <- Backup.export(backup, current_pid),
{:ok, %{size: size}} <- File.stat(zip_file),
{:ok, _upload} <- Backup.upload(backup, zip_file) do
backup
|> cast(
%{
file_size: size,
processed: true,
state: :complete
},
[:file_size, :processed, :state]
)
|> Repo.update()
+ else
+ e -> {:error, e}
end
end
end

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