243 lines
7.8 KiB
Elixir
243 lines
7.8 KiB
Elixir
# Pleroma: A lightweight social networking server
|
|
# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
|
|
# SPDX-License-Identifier: AGPL-3.0-only
|
|
|
|
defmodule Pleroma.Upload do
|
|
@moduledoc """
|
|
Manage user uploads
|
|
|
|
Options:
|
|
* `:type`: presets for activity type (defaults to Document) and size limits from app configuration
|
|
* `:description`: upload alternative text
|
|
* `:base_url`: override base url
|
|
* `:uploader`: override uploader
|
|
* `:filters`: override filters
|
|
* `:size_limit`: override size limit
|
|
* `:activity_type`: override activity type
|
|
|
|
The `%Pleroma.Upload{}` struct: all documented fields are meant to be overwritten in filters:
|
|
|
|
* `:id` - the upload id.
|
|
* `:name` - the upload file name.
|
|
* `:path` - the upload path: set at first to `id/name` but can be changed. Keep in mind that the path
|
|
is once created permanent and changing it (especially in uploaders) is probably a bad idea!
|
|
* `:tempfile` - path to the temporary file. Prefer in-place changes on the file rather than changing the
|
|
path as the temporary file is also tracked by `Plug.Upload{}` and automatically deleted once the request is over.
|
|
|
|
Related behaviors:
|
|
|
|
* `Pleroma.Uploaders.Uploader`
|
|
* `Pleroma.Upload.Filter`
|
|
|
|
"""
|
|
alias Ecto.UUID
|
|
require Logger
|
|
|
|
@type source ::
|
|
Plug.Upload.t()
|
|
| (data_uri_string :: String.t())
|
|
| {:from_local, name :: String.t(), id :: String.t(), path :: String.t()}
|
|
|
|
@type option ::
|
|
{:type, :avatar | :banner | :background}
|
|
| {:description, String.t()}
|
|
| {:activity_type, String.t()}
|
|
| {:size_limit, nil | non_neg_integer()}
|
|
| {:uploader, module()}
|
|
| {:filters, [module()]}
|
|
|
|
@type t :: %__MODULE__{
|
|
id: String.t(),
|
|
name: String.t(),
|
|
tempfile: String.t(),
|
|
content_type: String.t(),
|
|
path: String.t()
|
|
}
|
|
defstruct [:id, :name, :tempfile, :content_type, :path]
|
|
|
|
@spec store(source, options :: [option()]) :: {:ok, Map.t()} | {:error, any()}
|
|
def store(upload, opts \\ []) do
|
|
opts = get_opts(opts)
|
|
|
|
with {:ok, upload} <- prepare_upload(upload, opts),
|
|
upload = %__MODULE__{upload | path: upload.path || "#{upload.id}/#{upload.name}"},
|
|
{:ok, upload} <- Pleroma.Upload.Filter.filter(opts.filters, upload),
|
|
{:ok, url_spec} <- Pleroma.Uploaders.Uploader.put_file(opts.uploader, upload) do
|
|
{:ok,
|
|
%{
|
|
"type" => opts.activity_type,
|
|
"url" => [
|
|
%{
|
|
"type" => "Link",
|
|
"mediaType" => upload.content_type,
|
|
"href" => url_from_spec(upload, opts.base_url, url_spec)
|
|
}
|
|
],
|
|
"name" => Map.get(opts, :description) || upload.name
|
|
}}
|
|
else
|
|
{:error, error} ->
|
|
Logger.error(
|
|
"#{__MODULE__} store (using #{inspect(opts.uploader)}) failed: #{inspect(error)}"
|
|
)
|
|
|
|
{:error, error}
|
|
end
|
|
end
|
|
|
|
def char_unescaped?(char) do
|
|
URI.char_unreserved?(char) or char == ?/
|
|
end
|
|
|
|
defp get_opts(opts) do
|
|
{size_limit, activity_type} =
|
|
case Keyword.get(opts, :type) do
|
|
:banner ->
|
|
{Pleroma.Config.get!([:instance, :banner_upload_limit]), "Image"}
|
|
|
|
:avatar ->
|
|
{Pleroma.Config.get!([:instance, :avatar_upload_limit]), "Image"}
|
|
|
|
:background ->
|
|
{Pleroma.Config.get!([:instance, :background_upload_limit]), "Image"}
|
|
|
|
_ ->
|
|
{Pleroma.Config.get!([:instance, :upload_limit]), "Document"}
|
|
end
|
|
|
|
opts = %{
|
|
activity_type: Keyword.get(opts, :activity_type, activity_type),
|
|
size_limit: Keyword.get(opts, :size_limit, size_limit),
|
|
uploader: Keyword.get(opts, :uploader, Pleroma.Config.get([__MODULE__, :uploader])),
|
|
filters: Keyword.get(opts, :filters, Pleroma.Config.get([__MODULE__, :filters])),
|
|
description: Keyword.get(opts, :description),
|
|
base_url:
|
|
Keyword.get(
|
|
opts,
|
|
:base_url,
|
|
Pleroma.Config.get([__MODULE__, :base_url], Pleroma.Web.base_url())
|
|
)
|
|
}
|
|
|
|
# TODO: 1.0+ : remove old config compatibility
|
|
opts =
|
|
if Pleroma.Config.get([__MODULE__, :strip_exif]) == true &&
|
|
!Enum.member?(opts.filters, Pleroma.Upload.Filter.Mogrify) do
|
|
Logger.warn("""
|
|
Pleroma: configuration `:instance, :strip_exif` is deprecated, please instead set:
|
|
|
|
:pleroma, Pleroma.Upload, [filters: [Pleroma.Upload.Filter.Mogrify]]
|
|
|
|
:pleroma, Pleroma.Upload.Filter.Mogrify, args: ["strip", "auto-orient"]
|
|
""")
|
|
|
|
Pleroma.Config.put([Pleroma.Upload.Filter.Mogrify], args: ["strip", "auto-orient"])
|
|
Map.put(opts, :filters, opts.filters ++ [Pleroma.Upload.Filter.Mogrify])
|
|
else
|
|
opts
|
|
end
|
|
|
|
if Pleroma.Config.get([:instance, :dedupe_media]) == true &&
|
|
!Enum.member?(opts.filters, Pleroma.Upload.Filter.Dedupe) do
|
|
Logger.warn("""
|
|
Pleroma: configuration `:instance, :dedupe_media` is deprecated, please instead set:
|
|
|
|
:pleroma, Pleroma.Upload, [filters: [Pleroma.Upload.Filter.Dedupe]]
|
|
""")
|
|
|
|
Map.put(opts, :filters, opts.filters ++ [Pleroma.Upload.Filter.Dedupe])
|
|
else
|
|
opts
|
|
end
|
|
end
|
|
|
|
defp prepare_upload(%Plug.Upload{} = file, opts) do
|
|
with :ok <- check_file_size(file.path, opts.size_limit),
|
|
{:ok, content_type, name} <- Pleroma.MIME.file_mime_type(file.path, file.filename) do
|
|
{:ok,
|
|
%__MODULE__{
|
|
id: UUID.generate(),
|
|
name: name,
|
|
tempfile: file.path,
|
|
content_type: content_type
|
|
}}
|
|
end
|
|
end
|
|
|
|
defp prepare_upload(%{"img" => "data:image/" <> image_data}, opts) do
|
|
parsed = Regex.named_captures(~r/(?<filetype>jpeg|png|gif);base64,(?<data>.*)/, image_data)
|
|
data = Base.decode64!(parsed["data"], ignore: :whitespace)
|
|
hash = String.downcase(Base.encode16(:crypto.hash(:sha256, data)))
|
|
|
|
with :ok <- check_binary_size(data, opts.size_limit),
|
|
tmp_path <- tempfile_for_image(data),
|
|
{:ok, content_type, name} <-
|
|
Pleroma.MIME.bin_mime_type(data, hash <> "." <> parsed["filetype"]) do
|
|
{:ok,
|
|
%__MODULE__{
|
|
id: UUID.generate(),
|
|
name: name,
|
|
tempfile: tmp_path,
|
|
content_type: content_type
|
|
}}
|
|
end
|
|
end
|
|
|
|
# For Mix.Tasks.MigrateLocalUploads
|
|
defp prepare_upload(%__MODULE__{tempfile: path} = upload, _opts) do
|
|
with {:ok, content_type} <- Pleroma.MIME.file_mime_type(path) do
|
|
{:ok, %__MODULE__{upload | content_type: content_type}}
|
|
end
|
|
end
|
|
|
|
defp check_binary_size(binary, size_limit)
|
|
when is_integer(size_limit) and size_limit > 0 and byte_size(binary) >= size_limit do
|
|
{:error, :file_too_large}
|
|
end
|
|
|
|
defp check_binary_size(_, _), do: :ok
|
|
|
|
defp check_file_size(path, size_limit) when is_integer(size_limit) and size_limit > 0 do
|
|
with {:ok, %{size: size}} <- File.stat(path),
|
|
true <- size <= size_limit do
|
|
:ok
|
|
else
|
|
false -> {:error, :file_too_large}
|
|
error -> error
|
|
end
|
|
end
|
|
|
|
defp check_file_size(_, _), do: :ok
|
|
|
|
# Creates a tempfile using the Plug.Upload Genserver which cleans them up
|
|
# automatically.
|
|
defp tempfile_for_image(data) do
|
|
{:ok, tmp_path} = Plug.Upload.random_file("profile_pics")
|
|
{:ok, tmp_file} = File.open(tmp_path, [:write, :raw, :binary])
|
|
IO.binwrite(tmp_file, data)
|
|
|
|
tmp_path
|
|
end
|
|
|
|
defp url_from_spec(%__MODULE__{name: name}, base_url, {:file, path}) do
|
|
path =
|
|
URI.encode(path, &char_unescaped?/1) <>
|
|
if Pleroma.Config.get([__MODULE__, :link_name], false) do
|
|
"?name=#{URI.encode(name, &char_unescaped?/1)}"
|
|
else
|
|
""
|
|
end
|
|
|
|
prefix =
|
|
if is_nil(Pleroma.Config.get([__MODULE__, :base_url])) do
|
|
"media"
|
|
else
|
|
""
|
|
end
|
|
|
|
[base_url, prefix, path]
|
|
|> Path.join()
|
|
end
|
|
|
|
defp url_from_spec(_upload, _base_url, {:url, url}), do: url
|
|
end
|