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reverse proxy / uploads

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href 2018-11-23 17:40:45 +01:00
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5
.gitignore vendored
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@ -6,6 +6,9 @@
/uploads
/test/uploads
/.elixir_ls
/test/fixtures/test_tmp.txt
/test/fixtures/image_tmp.jpg
/doc
# Prevent committing custom emojis
/priv/static/emoji/custom/*
@ -28,4 +31,4 @@ erl_crash.dump
.env
# Editor config
/.vscode
/.vscode

19
config/config.exs
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@ -12,16 +12,15 @@
config :pleroma, Pleroma.Upload,
uploader: Pleroma.Uploaders.Local,
strip_exif: false
strip_exif: false,
proxy_remote: false,
proxy_opts: [inline_content_types: true, keep_user_agent: true]
config :pleroma, Pleroma.Uploaders.Local,
uploads: "uploads",
uploads_url: "{{base_url}}/media/{{file}}"
config :pleroma, Pleroma.Uploaders.Local, uploads: "uploads"
config :pleroma, Pleroma.Uploaders.S3,
bucket: nil,
public_endpoint: "https://s3.amazonaws.com",
force_media_proxy: false
public_endpoint: "https://s3.amazonaws.com"
config :pleroma, Pleroma.Uploaders.MDII,
cgi: "https://mdii.sakura.ne.jp/mdii-post.cgi",
@ -150,9 +149,11 @@
config :pleroma, :media_proxy,
enabled: false,
redirect_on_failure: true
# base_url: "https://cache.pleroma.social"
# base_url: "https://cache.pleroma.social",
proxy_opts: [
# inline_content_types: [] | false | true,
# http: [:insecure]
]
config :pleroma, :chat, enabled: true

2
config/test.exs
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@ -9,7 +9,7 @@
# Print only warnings and errors during test
config :logger, level: :warn
config :pleroma, Pleroma.Upload, uploads: "test/uploads"
config :pleroma, Pleroma.Uploaders.Local, uploads: "test/uploads"
# Configure your database
config :pleroma, Pleroma.Repo,

80
lib/mix/tasks/migrate_local_uploads.ex Normal file
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@ -0,0 +1,80 @@
defmodule Mix.Tasks.MigrateLocalUploads do
use Mix.Task
import Mix.Ecto
alias Pleroma.{Upload, Uploaders.Local, Uploaders.S3}
require Logger
@log_every 50
@shortdoc "Migrate uploads from local to remote storage"
def run([target_uploader | args]) do
delete? = Enum.member?(args, "--delete")
Application.ensure_all_started(:pleroma)
local_path = Pleroma.Config.get!([Local, :uploads])
uploader = Module.concat(Pleroma.Uploaders, target_uploader)
unless Code.ensure_loaded?(uploader) do
raise("The uploader #{inspect(uploader)} is not an existing/loaded module.")
end
target_enabled? = Pleroma.Config.get([Upload, :uploader]) == uploader
unless target_enabled? do
Pleroma.Config.put([Upload, :uploader], uploader)
end
Logger.info("Migrating files from local #{local_path} to #{to_string(uploader)}")
if delete? do
Logger.warn(
"Attention: uploaded files will be deleted, hope you have backups! (--delete ; cancel with ^C)"
)
:timer.sleep(:timer.seconds(5))
end
uploads = File.ls!(local_path)
total_count = length(uploads)
uploads
|> Task.async_stream(
fn uuid ->
u_path = Path.join(local_path, uuid)
{name, path} =
cond do
File.dir?(u_path) ->
files = for file <- File.ls!(u_path), do: {{file, uuid}, Path.join([u_path, file])}
List.first(files)
File.exists?(u_path) ->
# {uuid, u_path}
raise "should_dedupe local storage not supported yet sorry"
end
{:ok, _} =
Upload.store({:from_local, name, path}, should_dedupe: false, uploader: uploader)
if delete? do
File.rm_rf!(u_path)
end
Logger.debug("uploaded: #{inspect(name)}")
end,
timeout: 150_000
)
|> Stream.chunk_every(@log_every)
|> Enum.reduce(0, fn done, count ->
count = count + length(done)
Logger.info("Uploaded #{count}/#{total_count} files")
count
end)
Logger.info("Done!")
end
def run(_) do
Logger.error("Usage: migrate_local_uploads UploaderName [--delete]")
end
end

5
lib/pleroma/application.ex
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@ -7,6 +7,11 @@ def name, do: @name
def version, do: @version
def named_version(), do: @name <> " " <> @version
def user_agent() do
info = "#{Pleroma.Web.base_url()} <#{Pleroma.Config.get([:instance, :email], "")}>"
named_version() <> "; " <> info
end
# See http://elixir-lang.org/docs/stable/elixir/Application.html
# for more information on OTP Applications
@env Mix.env()

78
lib/pleroma/plugs/uploaded_media.ex Normal file
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@ -0,0 +1,78 @@
defmodule Pleroma.Plugs.UploadedMedia do
@moduledoc """
"""
import Plug.Conn
require Logger
@behaviour Plug
# no slashes
@path "media"
@cache_control %{
default: "public, max-age=1209600",
error: "public, must-revalidate, max-age=160"
}
def init(_opts) do
static_plug_opts =
[]
|> Keyword.put(:from, "__unconfigured_media_plug")
|> Keyword.put(:at, "/__unconfigured_media_plug")
|> Plug.Static.init()
%{static_plug_opts: static_plug_opts}
end
def call(conn = %{request_path: <<"/", @path, "/", file::binary>>}, opts) do
config = Pleroma.Config.get([Pleroma.Upload])
with uploader <- Keyword.fetch!(config, :uploader),
proxy_remote = Keyword.get(config, :proxy_remote, false),
{:ok, get_method} <- uploader.get_file(file) do
get_media(conn, get_method, proxy_remote, opts)
else
_ ->
conn
|> send_resp(500, "Failed")
|> halt()
end
end
def call(conn, _opts), do: conn
defp get_media(conn, {:static_dir, directory}, _, opts) do
static_opts =
Map.get(opts, :static_plug_opts)
|> Map.put(:at, [@path])
|> Map.put(:from, directory)
conn = Plug.Static.call(conn, static_opts)
if conn.halted do
conn
else
conn
|> send_resp(404, "Not found")
|> halt()
end
end
defp get_media(conn, {:url, url}, true, _) do
conn
|> Pleroma.ReverseProxy.call(url, Pleroma.Config.get([Pleroma.Upload, :proxy_opts], []))
end
defp get_media(conn, {:url, url}, _, _) do
conn
|> Phoenix.Controller.redirect(external: url)
|> halt()
end
defp get_media(conn, unknown, _, _) do
Logger.error("#{__MODULE__}: Unknown get startegy: #{inspect(unknown)}")
conn
|> send_resp(500, "Internal Error")
|> halt()
end
end

338
lib/pleroma/reverse_proxy.ex Normal file
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@ -0,0 +1,338 @@
defmodule Pleroma.ReverseProxy do
@keep_req_headers ~w(accept user-agent accept-encoding cache-control if-modified-since if-none-match range)
@resp_cache_headers ~w(etag date last-modified cache-control)
@keep_resp_headers @resp_cache_headers ++
~w(content-type content-disposition content-length accept-ranges vary)
@default_cache_control_header "public, max-age=1209600"
@valid_resp_codes [200, 206, 304]
@max_read_duration :timer.minutes(2)
@max_body_length :infinity
@methods ~w(GET HEAD)
@moduledoc """
A reverse proxy.
Pleroma.ReverseProxy.call(conn, url, options)
It is not meant to be added into a plug pipeline, but to be called from another plug or controller.
Supports `#{inspect(@methods)}` HTTP methods, and only allows `#{inspect(@valid_resp_codes)}` status codes.
Responses are chunked to the client while downloading from the upstream.
Some request / responses headers are preserved:
* request: `#{inspect(@keep_req_headers)}`
* response: `#{inspect(@keep_resp_headers)}`
If no caching headers (`#{inspect(@resp_cache_headers)}`) are returned by upstream, `cache-control` will be
set to `#{inspect(@default_cache_control_header)}`.
Options:
* `redirect_on_failure` (default `false`). Redirects the client to the real remote URL if there's any HTTP
errors. Any error during body processing will not be redirected as the response is chunked. This may expose
remote URL, clients IPs, ….
* `max_body_length` (default `#{inspect(@max_body_length)}`): limits the content length to be approximately the
specified length. It is validated with the `content-length` header and also verified when proxying.
* `max_read_duration` (default `#{inspect(@max_read_duration)}` ms): the total time the connection is allowed to
read from the remote upstream.
* `inline_content_types`:
* `true` will not alter `content-disposition` (up to the upstream),
* `false` will add `content-disposition: attachment` to any request,
* a list of whitelisted content types
* `keep_user_agent` will forward the client's user-agent to the upstream. This may be useful if the upstream is
doing content transformation (encoding, …) depending on the request.
* `req_headers`, `resp_headers` additional headers.
* `http`: options for [hackney](https://github.com/benoitc/hackney).
"""
@hackney Application.get_env(:pleroma, :hackney, :hackney)
@httpoison Application.get_env(:pleroma, :httpoison, HTTPoison)
@default_hackney_options [{:follow_redirect, true}]
@inline_content_types [
"image/gif",
"image/jpeg",
"image/jpg",
"image/png",
"image/svg+xml",
"audio/mpeg",
"audio/mp3",
"video/webm",
"video/mp4",
"video/quicktime"
]
require Logger
import Plug.Conn
@type option() ::
{:keep_user_agent, boolean}
| {:max_read_duration, :timer.time() | :infinity}
| {:max_body_length, non_neg_integer() | :infinity}
| {:http, []}
| {:req_headers, [{String.t(), String.t()}]}
| {:resp_headers, [{String.t(), String.t()}]}
| {:inline_content_types, boolean() | [String.t()]}
| {:redirect_on_failure, boolean()}
@spec call(Plug.Conn.t(), url :: String.t(), [option()]) :: Plug.Conn.t()
def call(conn = %{method: method}, url, opts \\ []) when method in @methods do
hackney_opts =
@default_hackney_options
|> Keyword.merge(Keyword.get(opts, :http, []))
|> @httpoison.process_request_options()
req_headers = build_req_headers(conn.req_headers, opts)
opts =
if filename = Pleroma.Web.MediaProxy.filename(url) do
Keyword.put_new(opts, :attachment_name, filename)
else
opts
end
with {:ok, code, headers, client} <- request(method, url, req_headers, hackney_opts),
:ok <- header_lenght_constraint(headers, Keyword.get(opts, :max_body_length)) do
response(conn, client, url, code, headers, opts)
else
{:ok, code, headers} ->
head_response(conn, url, code, headers, opts)
|> halt()
{:error, {:invalid_http_response, code}} ->
Logger.error("#{__MODULE__}: request to #{inspect(url)} failed with HTTP status #{code}")
conn
|> error_or_redirect(
url,
code,
"Request failed: " <> Plug.Conn.Status.reason_phrase(code),
opts
)
|> halt()
{:error, error} ->
Logger.error("#{__MODULE__}: request to #{inspect(url)} failed: #{inspect(error)}")
conn
|> error_or_redirect(url, 500, "Request failed", opts)
|> halt()
end
end
def call(conn, _, _) do
conn
|> send_resp(400, Plug.Conn.Status.reason_phrase(400))
|> halt()
end
defp request(method, url, headers, hackney_opts) do
Logger.debug("#{__MODULE__} #{method} #{url} #{inspect(headers)}")
method = method |> String.downcase() |> String.to_existing_atom()
case @hackney.request(method, url, headers, "", hackney_opts) do
{:ok, code, headers, client} when code in @valid_resp_codes ->
{:ok, code, downcase_headers(headers), client}
{:ok, code, headers} when code in @valid_resp_codes ->
{:ok, code, downcase_headers(headers)}
{:ok, code, _, _} ->
{:error, {:invalid_http_response, code}}
{:error, error} ->
{:error, error}
end
end
defp response(conn, client, url, status, headers, opts) do
result =
conn
|> put_resp_headers(build_resp_headers(headers, opts))
|> send_chunked(status)
|> chunk_reply(client, opts)
case result do
{:ok, conn} ->
halt(conn)
{:error, :closed, conn} ->
:hackney.close(client)
halt(conn)
{:error, error, conn} ->
Logger.warn(
"#{__MODULE__} request to #{url} failed while reading/chunking: #{inspect(error)}"
)
:hackney.close(client)
halt(conn)
end
end
defp chunk_reply(conn, client, opts) do
chunk_reply(conn, client, opts, 0, 0)
end
defp chunk_reply(conn, client, opts, sent_so_far, duration) do
with {:ok, duration} <-
check_read_duration(
duration,
Keyword.get(opts, :max_read_duration, @max_read_duration)
),
{:ok, data} <- @hackney.stream_body(client),
{:ok, duration} <- increase_read_duration(duration),
sent_so_far = sent_so_far + byte_size(data),
:ok <- body_size_constraint(sent_so_far, Keyword.get(opts, :max_body_size)),
{:ok, conn} <- chunk(conn, data) do
chunk_reply(conn, client, opts, sent_so_far, duration)
else
:done -> {:ok, conn}
{:error, error} -> {:error, error, conn}
end
end
defp head_response(conn, _url, code, headers, opts) do
conn
|> put_resp_headers(build_resp_headers(headers, opts))
|> send_resp(code, "")
end
defp error_or_redirect(conn, url, code, body, opts) do
if Keyword.get(opts, :redirect_on_failure, false) do
conn
|> Phoenix.Controller.redirect(external: url)
|> halt()
else
conn
|> send_resp(code, body)
|> halt
end
end
defp downcase_headers(headers) do
Enum.map(headers, fn {k, v} ->
{String.downcase(k), v}
end)
end
defp put_resp_headers(conn, headers) do
Enum.reduce(headers, conn, fn {k, v}, conn ->
put_resp_header(conn, k, v)
end)
end
defp build_req_headers(headers, opts) do
headers =
headers
|> downcase_headers()
|> Enum.filter(fn {k, _} -> k in @keep_req_headers end)
|> (fn headers ->
headers = headers ++ Keyword.get(opts, :req_headers, [])
if Keyword.get(opts, :keep_user_agent, false) do
List.keystore(
headers,
"user-agent",
0,
{"user-agent", Pleroma.Application.user_agent()}
)
else
headers
end
end).()
end
defp build_resp_headers(headers, opts) do
headers =
headers
|> Enum.filter(fn {k, _} -> k in @keep_resp_headers end)
|> build_resp_cache_headers(opts)
|> build_resp_content_disposition_header(opts)
|> (fn headers -> headers ++ Keyword.get(opts, :resp_headers, []) end).()
end
defp build_resp_cache_headers(headers, opts) do
has_cache? = Enum.any?(headers, fn {k, _} -> k in @resp_cache_headers end)
if has_cache? do
headers
else
List.keystore(headers, "cache-control", 0, {"cache-control", @default_cache_control_header})
end
end
defp build_resp_content_disposition_header(headers, opts) do
opt = Keyword.get(opts, :inline_content_types, @inline_content_types)
{_, content_type} =
List.keyfind(headers, "content-type", 0, {"content-type", "application/octect-stream"})
attachment? =
cond do
is_list(opt) && !Enum.member?(opt, content_type) -> true
opt == false -> true
true -> false
end
if attachment? do
disposition = "attachment; filename=" <> Keyword.get(opts, :attachment_name, "attachment")
List.keystore(headers, "content-disposition", 0, {"content-disposition", disposition})
else
headers
end
end
defp header_lenght_constraint(headers, limit) when is_integer(limit) and limit > 0 do
with {_, size} <- List.keyfind(headers, "content-length", 0),
{size, _} <- Integer.parse(size),
true <- size <= limit do
:ok
else
false ->
{:error, :body_too_large}
_ ->
:ok
end
end
defp header_lenght_constraint(_, _), do: :ok
defp body_size_constraint(size, limit) when is_integer(limit) and limit > 0 and size >= limit do
{:error, :body_too_large}
end
defp body_size_constraint(_, _), do: :ok
defp check_read_duration(duration, max)
when is_integer(duration) and is_integer(max) and max > 0 do
if duration > max do
{:error, :read_duration_exceeded}
else
Logger.debug("Duration #{inspect(duration)}")
{:ok, {duration, :erlang.system_time(:millisecond)}}
end
end
defp check_read_duration(_, _), do: {:ok, :no_duration_limit, :no_duration_limit}
defp increase_read_duration({previous_duration, started})
when is_integer(previous_duration) and is_integer(started) do
duration = :erlang.system_time(:millisecond) - started
{:ok, previous_duration + duration}
end
defp increase_read_duration(_) do
{:ok, :no_duration_limit, :no_duration_limit}
end
end

200
lib/pleroma/upload.ex
View file

@ -1,81 +1,102 @@
defmodule Pleroma.Upload do
alias Ecto.UUID
require Logger
def check_file_size(path, nil), do: true
@type upload_option ::
{:dedupe, boolean()} | {:size_limit, non_neg_integer()} | {:uploader, module()}
@type upload_source ::
Plug.Upload.t() | data_uri_string() ::
String.t() | {:from_local, name :: String.t(), uuid :: String.t(), path :: String.t()}
def check_file_size(path, size_limit) do
{:ok, %{size: size}} = File.stat(path)
size <= size_limit
end
@spec store(upload_source, options :: [upload_option()]) :: {:ok, Map.t()} | {:error, any()}
def store(upload, opts \\ []) do
opts = get_opts(opts)
def store(file, should_dedupe, size_limit \\ nil)
def store(%Plug.Upload{} = file, should_dedupe, size_limit) do
content_type = get_content_type(file.path)
with uuid <- get_uuid(file, should_dedupe),
name <- get_name(file, uuid, content_type, should_dedupe),
true <- check_file_size(file.path, size_limit) do
strip_exif_data(content_type, file.path)
{:ok, url_path} = uploader().put_file(name, uuid, file.path, content_type, should_dedupe)
%{
"type" => "Document",
"url" => [
%{
"type" => "Link",
"mediaType" => content_type,
"href" => url_path
}
],
"name" => name
}
with {:ok, name, uuid, path, content_type} <- process_upload(upload, opts),
_ <- strip_exif_data(content_type, path),
{:ok, url_spec} <- opts.uploader.put_file(name, uuid, path, content_type, opts) do
{:ok,
%{
"type" => "Image",
"url" => [
%{
"type" => "Link",
"mediaType" => content_type,
"href" => url_from_spec(url_spec)
}
],
"name" => name
}}
else
_e -> nil
end
end
def store(%{"img" => "data:image/" <> image_data}, should_dedupe, size_limit) do
parsed = Regex.named_captures(~r/(?<filetype>jpeg|png|gif);base64,(?<data>.*)/, image_data)
data = Base.decode64!(parsed["data"], ignore: :whitespace)
with tmp_path <- tempfile_for_image(data),
uuid <- UUID.generate(),
true <- check_file_size(tmp_path, size_limit) do
content_type = get_content_type(tmp_path)
strip_exif_data(content_type, tmp_path)
name =
create_name(
String.downcase(Base.encode16(:crypto.hash(:sha256, data))),
parsed["filetype"],
content_type
{:error, error} ->
Logger.error(
"#{__MODULE__} store (using #{inspect(opts.uploader)}) failed: #{inspect(error)}"
)
{:ok, url_path} = uploader().put_file(name, uuid, tmp_path, content_type, should_dedupe)
%{
"type" => "Image",
"url" => [
%{
"type" => "Link",
"mediaType" => content_type,
"href" => url_path
}
],
"name" => name
}
else
_e -> nil
{:error, error}
end
end
@doc """
Creates a tempfile using the Plug.Upload Genserver which cleans them up
automatically.
"""
def tempfile_for_image(data) do
defp get_opts(opts) do
%{
dedupe: Keyword.get(opts, :dedupe, Pleroma.Config.get([:instance, :dedupe_media])),
size_limit: Keyword.get(opts, :size_limit, Pleroma.Config.get([:instance, :upload_limit])),
uploader: Keyword.get(opts, :uploader, Pleroma.Config.get([__MODULE__, :uploader]))
}
end
defp process_upload(%Plug.Upload{} = file, opts) do
with :ok <- check_file_size(file.path, opts.size_limit),
uuid <- get_uuid(file, opts.dedupe),
content_type <- get_content_type(file.path),
name <- get_name(file, uuid, content_type, opts.dedupe) do
{:ok, name, uuid, file.path, content_type}
end
end
defp process_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),
content_type <- get_content_type(tmp_path),
uuid <- UUID.generate(),
name <- create_name(hash, parsed["filetype"], content_type) do
{:ok, name, uuid, tmp_path, content_type}
end
end
# For Mix.Tasks.MigrateLocalUploads
defp process_upload({:from_local, name, uuid, path}, _opts) do
with content_type <- get_content_type(path) do
{:ok, name, uuid, path, 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)
@ -83,7 +104,7 @@ def tempfile_for_image(data) do
tmp_path
end
def strip_exif_data(content_type, file) do
defp strip_exif_data(content_type, file) do
settings = Application.get_env(:pleroma, Pleroma.Upload)
do_strip = Keyword.fetch!(settings, :strip_exif)
[filetype, _ext] = String.split(content_type, "/")
@ -94,16 +115,20 @@ def strip_exif_data(content_type, file) do
end
defp create_name(uuid, ext, type) do
case type do
"application/octet-stream" ->
String.downcase(Enum.join([uuid, ext], "."))
extension =
cond do
type == "application/octect-stream" -> ext
ext = mime_extension(ext) -> ext
true -> String.split(type, "/") |> List.last()
end
"audio/mpeg" ->
String.downcase(Enum.join([uuid, "mp3"], "."))
[uuid, extension]
|> Enum.join(".")
|> String.downcase()
end
_ ->
String.downcase(Enum.join([uuid, List.last(String.split(type, "/"))], "."))
end
defp mime_extension(type) do
List.first(MIME.extensions(type))
end
defp get_uuid(file, should_dedupe) do
@ -127,11 +152,15 @@ defp get_name(file, uuid, type, should_dedupe) do
Enum.join(parts)
end
case type do
"application/octet-stream" -> file.filename
"audio/mpeg" -> new_filename <> ".mp3"
"image/jpeg" -> new_filename <> ".jpg"
_ -> Enum.join([new_filename, String.split(type, "/") |> List.last()], ".")
cond do
type == "application/octet-stream" ->
file.filename
ext = mime_extension(type) ->
new_filename <> "." <> ext
true ->
Enum.join([new_filename, String.split(type, "/") |> List.last()], ".")
end
end
end
@ -187,4 +216,13 @@ def get_content_type(file) do
defp uploader() do
Pleroma.Config.get!([Pleroma.Upload, :uploader])
end
defp url_from_spec({:file, path}) do
[Pleroma.Web.base_url(), "media", path]
|> Path.join()
end
defp url_from_spec({:url, url}) do
url
end
end

26
lib/pleroma/uploaders/local.ex
View file

@ -3,9 +3,12 @@ defmodule Pleroma.Uploaders.Local do
alias Pleroma.Web
def put_file(name, uuid, tmpfile, _content_type, should_dedupe) do
upload_folder = get_upload_path(uuid, should_dedupe)
url_path = get_url(name, uuid, should_dedupe)
def get_file(_) do
{:ok, {:static_dir, upload_path()}}
end
def put_file(name, uuid, tmpfile, _content_type, opts) do
upload_folder = get_upload_path(uuid, opts.dedupe)
File.mkdir_p!(upload_folder)
@ -17,12 +20,11 @@ def put_file(name, uuid, tmpfile, _content_type, should_dedupe) do
File.cp!(tmpfile, result_file)
end
{:ok, url_path}
{:ok, {:file, get_url(name, uuid, opts.dedupe)}}
end
def upload_path do
settings = Application.get_env(:pleroma, Pleroma.Uploaders.Local)
Keyword.fetch!(settings, :uploads)
Pleroma.Config.get!([__MODULE__, :uploads])
end
defp get_upload_path(uuid, should_dedupe) do
@ -35,17 +37,9 @@ defp get_upload_path(uuid, should_dedupe) do
defp get_url(name, uuid, should_dedupe) do
if should_dedupe do
url_for(:cow_uri.urlencode(name))
:cow_uri.urlencode(name)
else
url_for(Path.join(uuid, :cow_uri.urlencode(name)))
Path.join(uuid, :cow_uri.urlencode(name))
end
end
defp url_for(file) do
settings = Application.get_env(:pleroma, Pleroma.Uploaders.Local)
Keyword.get(settings, :uploads_url)
|> String.replace("{{file}}", file)
|> String.replace("{{base_url}}", Web.base_url())
end
end

12
lib/pleroma/uploaders/mdii.ex
View file

@ -5,7 +5,13 @@ defmodule Pleroma.Uploaders.MDII do
@httpoison Application.get_env(:pleroma, :httpoison)
def put_file(name, uuid, path, content_type, should_dedupe) do
# MDII-hosted images are never passed through the MediaPlug; only local media.
# Delegate to Pleroma.Uploaders.Local
def get_file(file) do
Pleroma.Uploaders.Local.get_file(file)
end
def put_file(name, uuid, path, content_type, opts) do
cgi = Pleroma.Config.get([Pleroma.Uploaders.MDII, :cgi])
files = Pleroma.Config.get([Pleroma.Uploaders.MDII, :files])
@ -18,9 +24,9 @@ def put_file(name, uuid, path, content_type, should_dedupe) do
File.rm!(path)
remote_file_name = String.split(body) |> List.first()
public_url = "#{files}/#{remote_file_name}.#{extension}"
{:ok, public_url}
{:ok, {:url, public_url}}
else
_ -> Pleroma.Uploaders.Local.put_file(name, uuid, path, content_type, should_dedupe)
_ -> Pleroma.Uploaders.Local.put_file(name, uuid, path, content_type, opts)
end
end
end

50
lib/pleroma/uploaders/s3.ex
View file

@ -1,40 +1,48 @@
defmodule Pleroma.Uploaders.S3 do
alias Pleroma.Web.MediaProxy
@behaviour Pleroma.Uploaders.Uploader
require Logger
def put_file(name, uuid, path, content_type, _should_dedupe) do
settings = Application.get_env(:pleroma, Pleroma.Uploaders.S3)
bucket = Keyword.fetch!(settings, :bucket)
public_endpoint = Keyword.fetch!(settings, :public_endpoint)
force_media_proxy = Keyword.fetch!(settings, :force_media_proxy)
# The file name is re-encoded with S3's constraints here to comply with previous links with less strict filenames
def get_file(file) do
config = Pleroma.Config.get([__MODULE__])
{:ok,
{:url,
Path.join([
Keyword.fetch!(config, :public_endpoint),
Keyword.fetch!(config, :bucket),
strict_encode(URI.decode(file))
])}}
end
def put_file(name, uuid, path, content_type, _opts) do
config = Pleroma.Config.get([__MODULE__])
bucket = Keyword.get(config, :bucket)
{:ok, file_data} = File.read(path)
File.rm!(path)
s3_name = "#{uuid}/#{encode(name)}"
s3_name = "#{uuid}/#{strict_encode(name)}"
{:ok, _} =
op =
ExAws.S3.put_object(bucket, s3_name, file_data, [
{:acl, :public_read},
{:content_type, content_type}
])
|> ExAws.request()
url_base = "#{public_endpoint}/#{bucket}/#{s3_name}"
case ExAws.request(op) do
{:ok, _} ->
{:ok, {:file, s3_name}}
public_url =
if force_media_proxy do
MediaProxy.url(url_base)
else
url_base
end
{:ok, public_url}
error ->
Logger.error("#{__MODULE__}: #{inspect(error)}")
{:error, "S3 Upload failed"}
end
end
defp encode(name) do
String.replace(name, ~r/[^0-9a-zA-Z!.*'()_-]/, "-")
@regex Regex.compile!("[^0-9a-zA-Z!.*/'()_-]")
def strict_encode(name) do
String.replace(name, @regex, "-")
end
end

2
lib/pleroma/uploaders/swift/swift.ex
View file

@ -14,7 +14,7 @@ def upload_file(filename, body, content_type) do
case put("#{filename}", body, "X-Auth-Token": token, "Content-Type": content_type) do
{:ok, %HTTPoison.Response{status_code: 201}} ->
{:ok, "#{object_url}/#{filename}"}
{:ok, {:file, filename}}
{:ok, %HTTPoison.Response{status_code: 401}} ->
{:error, "Unauthorized, Bad Token"}

6
lib/pleroma/uploaders/swift/uploader.ex
View file

@ -1,7 +1,11 @@
defmodule Pleroma.Uploaders.Swift do
@behaviour Pleroma.Uploaders.Uploader
def put_file(name, uuid, tmp_path, content_type, _should_dedupe) do
def get_file(name) do
{:ok, {:url, Path.join([Pleroma.Config.get!([__MODULE__, :object_url]), name])}}
end
def put_file(name, uuid, tmp_path, content_type, _opts) do
{:ok, file_data} = File.read(tmp_path)
remote_name = "#{uuid}/#{name}"

27
lib/pleroma/uploaders/uploader.ex
View file

@ -1,20 +1,35 @@
defmodule Pleroma.Uploaders.Uploader do
@moduledoc """
Defines the contract to put an uploaded file to any backend.
Defines the contract to put and get an uploaded file to any backend.
"""
@doc """
Instructs how to get the file from the backend.
Used by `Pleroma.Plugs.UploadedMedia`.
"""
@type get_method :: {:static_dir, directory :: String.t()} | {:url, url :: String.t()}
@callback get_file(file :: String.t()) :: {:ok, get_method()}
@doc """
Put a file to the backend.
Returns `{:ok, String.t } | {:error, String.t} containing the path of the
uploaded file, or error information if the file failed to be saved to the
respective backend.
Returns:
* `{:ok, spec}` where spec is:
* `{:file, filename :: String.t}` to handle reads with `get_file/1` (recommended)
This allows to correctly proxy or redirect requests to the backend, while allowing to migrate backends without breaking any URL.
* `{url, url :: String.t}` to bypass `get_file/2` and use the `url` directly in the activity.
* `{:error, String.t}` error information if the file failed to be saved to the backend.
"""
@callback put_file(
name :: String.t(),
uuid :: String.t(),
file :: File.t(),
content_type :: String.t(),
should_dedupe :: Boolean.t()
) :: {:ok, String.t()} | {:error, String.t()}
options :: Map.t()
) :: {:ok, {:file, String.t()} | {:url, String.t()}} | {:error, String.t()}
end

6
lib/pleroma/web/activity_pub/activity_pub.ex
View file

@ -572,10 +572,8 @@ def fetch_activities_bounded(recipients_to, recipients_cc, opts \\ %{}) do
|> Enum.reverse()
end
def upload(file, size_limit \\ nil) do
with data <-
Upload.store(file, Application.get_env(:pleroma, :instance)[:dedupe_media], size_limit),
false <- is_nil(data) do
def upload(file, opts \\ []) do
with {:ok, data} <- Upload.store(file, opts) do
Repo.insert(%Object{data: data})
end
end

2
lib/pleroma/web/endpoint.ex
View file

@ -12,7 +12,7 @@ defmodule Pleroma.Web.Endpoint do
plug(CORSPlug)
plug(Pleroma.Plugs.HTTPSecurityPlug)
plug(Plug.Static, at: "/media", from: Pleroma.Uploaders.Local.upload_path(), gzip: false)
plug(Pleroma.Plugs.UploadedMedia)
plug(
Plug.Static,

4
lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
View file

@ -60,7 +60,7 @@ def update_credentials(%{assigns: %{user: user}} = conn, params) do
user =
if avatar = params["avatar"] do
with %Plug.Upload{} <- avatar,
{:ok, object} <- ActivityPub.upload(avatar, avatar_upload_limit),
{:ok, object} <- ActivityPub.upload(avatar, size_limit: avatar_upload_limit),
change = Ecto.Changeset.change(user, %{avatar: object.data}),
{:ok, user} = User.update_and_set_cache(change) do
user
@ -74,7 +74,7 @@ def update_credentials(%{assigns: %{user: user}} = conn, params) do
user =
if banner = params["header"] do
with %Plug.Upload{} <- banner,
{:ok, object} <- ActivityPub.upload(banner, banner_upload_limit),
{:ok, object} <- ActivityPub.upload(banner, size_limit: banner_upload_limit),
new_info <- Map.put(user.info, "banner", object.data),
change <- User.info_changeset(user, %{info: new_info}),
{:ok, user} <- User.update_and_set_cache(change) do

135
lib/pleroma/web/media_proxy/controller.ex
View file

@ -1,135 +1,32 @@
defmodule Pleroma.Web.MediaProxy.MediaProxyController do
use Pleroma.Web, :controller
require Logger
alias Pleroma.{Web.MediaProxy, ReverseProxy}
@httpoison Application.get_env(:pleroma, :httpoison)
@max_body_length 25 * 1_048_576
@cache_control %{
default: "public, max-age=1209600",
error: "public, must-revalidate, max-age=160"
}
# Content-types that will not be returned as content-disposition attachments
# Override with :media_proxy, :safe_content_types in the configuration
@safe_content_types [
"image/gif",
"image/jpeg",
"image/jpg",
"image/png",
"image/svg+xml",
"audio/mpeg",
"audio/mp3",
"video/webm",
"video/mp4"
]
def remote(conn, params = %{"sig" => sig, "url" => url}) do
config = Application.get_env(:pleroma, :media_proxy, [])
with true <- Keyword.get(config, :enabled, false),
{:ok, url} <- Pleroma.Web.MediaProxy.decode_url(sig, url),
def remote(conn, params = %{"sig" => sig64, "url" => url64}) do
with config <- Pleroma.Config.get([:media_proxy]),
true <- Keyword.get(config, :enabled, false),
{:ok, url} <- MediaProxy.decode_url(sig64, url64),
filename <- Path.basename(URI.parse(url).path),
true <-
if(Map.get(params, "filename"),
do: filename == Path.basename(conn.request_path),
else: true
),
{:ok, content_type, body} <- proxy_request(url),
safe_content_type <-
Enum.member?(
Keyword.get(config, :safe_content_types, @safe_content_types),
content_type
) do
conn
|> put_resp_content_type(content_type)
|> set_cache_header(:default)
|> put_resp_header(
"content-security-policy",
"default-src 'none'; style-src 'unsafe-inline'; media-src data:; img-src 'self' data:"
)
|> put_resp_header("x-xss-protection", "1; mode=block")
|> put_resp_header("x-content-type-options", "nosniff")
|> put_attachement_header(safe_content_type, filename)
|> send_resp(200, body)
:ok <- filename_matches(Map.has_key?(params, "filename"), conn.request_path, url) do
ReverseProxy.call(conn, url, Keyword.get(config, :proxy_opts, []))
else
false ->
send_error(conn, 404)
send_resp(conn, 404, Plug.Conn.Status.reason_phrase(404))
{:error, :invalid_signature} ->
send_error(conn, 403)
send_resp(conn, 403, Plug.Conn.Status.reason_phrase(403))
{:error, {:http, _, url}} ->
redirect_or_error(conn, url, Keyword.get(config, :redirect_on_failure, true))
{:wrong_filename, filename} ->
redirect(conn, external: MediaProxy.build_url(sig64, url64, filename))
end
end
defp proxy_request(link) do
headers = [
{"user-agent",
"Pleroma/MediaProxy; #{Pleroma.Web.base_url()} <#{
Application.get_env(:pleroma, :instance)[:email]
}>"}
]
def filename_matches(has_filename, path, url) do
filename = MediaProxy.filename(url)
options =
@httpoison.process_request_options([:insecure, {:follow_redirect, true}]) ++
[{:pool, :default}]
with {:ok, 200, headers, client} <- :hackney.request(:get, link, headers, "", options),
headers = Enum.into(headers, Map.new()),
{:ok, body} <- proxy_request_body(client),
content_type <- proxy_request_content_type(headers, body) do
{:ok, content_type, body}
else
{:ok, status, _, _} ->
Logger.warn("MediaProxy: request failed, status #{status}, link: #{link}")
{:error, {:http, :bad_status, link}}
{:error, error} ->
Logger.warn("MediaProxy: request failed, error #{inspect(error)}, link: #{link}")
{:error, {:http, error, link}}
cond do
has_filename && filename && Path.basename(path) != filename -> {:wrong_filename, filename}
true -> :ok
end
end
defp set_cache_header(conn, key) do
Plug.Conn.put_resp_header(conn, "cache-control", @cache_control[key])
end
defp redirect_or_error(conn, url, true), do: redirect(conn, external: url)
defp redirect_or_error(conn, url, _), do: send_error(conn, 502, "Media proxy error: " <> url)
defp send_error(conn, code, body \\ "") do
conn
|> set_cache_header(:error)
|> send_resp(code, body)
end
defp proxy_request_body(client), do: proxy_request_body(client, <<>>)
defp proxy_request_body(client, body) when byte_size(body) < @max_body_length do
case :hackney.stream_body(client) do
{:ok, data} -> proxy_request_body(client, <<body::binary, data::binary>>)
:done -> {:ok, body}
{:error, reason} -> {:error, reason}
end
end
defp proxy_request_body(client, _) do
:hackney.close(client)
{:error, :body_too_large}
end
# TODO: the body is passed here as well because some hosts do not provide a content-type.
# At some point we may want to use magic numbers to discover the content-type and reply a proper one.
defp proxy_request_content_type(headers, _body) do
headers["Content-Type"] || headers["content-type"] || "application/octet-stream"
end
defp put_attachement_header(conn, true, _), do: conn
defp put_attachement_header(conn, false, filename) do
put_resp_header(conn, "content-disposition", "attachment; filename='#{filename}'")
end
end

20
lib/pleroma/web/media_proxy/media_proxy.ex
View file

@ -17,10 +17,8 @@ def url(url) do
base64 = Base.url_encode64(url, @base64_opts)
sig = :crypto.hmac(:sha, secret, base64)
sig64 = sig |> Base.url_encode64(@base64_opts)
filename = if path = URI.parse(url).path, do: "/" <> Path.basename(path), else: ""
Keyword.get(config, :base_url, Pleroma.Web.base_url()) <>
"/proxy/#{sig64}/#{base64}#{filename}"
build_url(sig64, base64, filename(url))
end
end
@ -35,4 +33,20 @@ def decode_url(sig, url) do
{:error, :invalid_signature}
end
end
def filename(url_or_path) do
if path = URI.parse(url_or_path).path, do: Path.basename(path)
end
def build_url(sig_base64, url_base64, filename \\ nil) do
[
Pleroma.Config.get([:media_proxy, :base_url], Pleroma.Web.base_url()),
"proxy",
sig_base64,
url_base64,
filename
]
|> Enum.filter(fn value -> value end)
|> Path.join()
end
end

2
lib/pleroma/web/twitter_api/twitter_api.ex
View file

@ -97,7 +97,7 @@ def upload(%Plug.Upload{} = file, format \\ "xml") do
{:ok, object} = ActivityPub.upload(file)
url = List.first(object.data["url"])
href = url["href"] |> MediaProxy.url()
href = url["href"]
type = url["mediaType"]
case format do

7
lib/pleroma/web/twitter_api/twitter_api_controller.ex
View file

@ -294,7 +294,7 @@ def update_avatar(%{assigns: %{user: user}} = conn, params) do
Application.get_env(:pleroma, :instance)
|> Keyword.fetch(:avatar_upload_limit)
{:ok, object} = ActivityPub.upload(params, upload_limit)
{:ok, object} = ActivityPub.upload(params, size_limit: upload_limit)
change = Changeset.change(user, %{avatar: object.data})
{:ok, user} = User.update_and_set_cache(change)
CommonAPI.update(user)
@ -307,7 +307,8 @@ def update_banner(%{assigns: %{user: user}} = conn, params) do
Application.get_env(:pleroma, :instance)
|> Keyword.fetch(:banner_upload_limit)
with {:ok, object} <- ActivityPub.upload(%{"img" => params["banner"]}, upload_limit),
with {:ok, object} <-
ActivityPub.upload(%{"img" => params["banner"]}, size_limit: upload_limit),
new_info <- Map.put(user.info, "banner", object.data),
change <- User.info_changeset(user, %{info: new_info}),
{:ok, user} <- User.update_and_set_cache(change) do
@ -325,7 +326,7 @@ def update_background(%{assigns: %{user: user}} = conn, params) do
Application.get_env(:pleroma, :instance)
|> Keyword.fetch(:background_upload_limit)
with {:ok, object} <- ActivityPub.upload(params, upload_limit),
with {:ok, object} <- ActivityPub.upload(params, size_limit: upload_limit),
new_info <- Map.put(user.info, "background", object.data),
change <- User.info_changeset(user, %{info: new_info}),
{:ok, _user} <- User.update_and_set_cache(change) do

2
test/support/httpoison_mock.ex
View file

@ -1,6 +1,8 @@
defmodule HTTPoisonMock do
alias HTTPoison.Response
def process_request_options(options), do: options
def get(url, body \\ [], headers \\ [])
def get("https://prismo.news/@mxb", _, _) do

42
test/upload_test.exs
View file

@ -2,7 +2,35 @@ defmodule Pleroma.UploadTest do
alias Pleroma.Upload
use Pleroma.DataCase
describe "Storing a file" do
describe "Storing a file with the Local uploader" do
setup do
uploader = Pleroma.Config.get([Pleroma.Upload, :uploader])
unless uploader == Pleroma.Uploaders.Local do
on_exit(fn ->
Pleroma.Config.put([Pleroma.Upload, :uploader], uploader)
end)
end
:ok
end
test "returns a media url" do
File.cp!("test/fixtures/image.jpg", "test/fixtures/image_tmp.jpg")
file = %Plug.Upload{
content_type: "image/jpg",
path: Path.absname("test/fixtures/image_tmp.jpg"),
filename: "image.jpg"
}
{:ok, data} = Upload.store(file)
assert %{"url" => [%{"href" => url}]} = data
assert String.starts_with?(url, Pleroma.Web.base_url() <> "/media/")
end
test "copies the file to the configured folder with deduping" do
File.cp!("test/fixtures/image.jpg", "test/fixtures/image_tmp.jpg")
@ -12,7 +40,7 @@ test "copies the file to the configured folder with deduping" do
filename: "an [image.jpg"
}
data = Upload.store(file, true)
{:ok, data} = Upload.store(file, dedupe: true)
assert data["name"] ==
"e7a6d0cf595bff76f14c9a98b6c199539559e8b844e02e51e5efcfd1f614a2df.jpeg"
@ -27,7 +55,7 @@ test "copies the file to the configured folder without deduping" do
filename: "an [image.jpg"
}
data = Upload.store(file, false)
{:ok, data} = Upload.store(file, dedupe: false)
assert data["name"] == "an [image.jpg"
end
@ -40,7 +68,7 @@ test "fixes incorrect content type" do
filename: "an [image.jpg"
}
data = Upload.store(file, true)
{:ok, data} = Upload.store(file, dedupe: true)
assert hd(data["url"])["mediaType"] == "image/jpeg"
end
@ -53,7 +81,7 @@ test "adds missing extension" do
filename: "an [image"
}
data = Upload.store(file, false)
{:ok, data} = Upload.store(file, dedupe: false)
assert data["name"] == "an [image.jpg"
end
@ -66,7 +94,7 @@ test "fixes incorrect file extension" do
filename: "an [image.blah"
}
data = Upload.store(file, false)
{:ok, data} = Upload.store(file, dedupe: false)
assert data["name"] == "an [image.jpg"
end
@ -79,7 +107,7 @@ test "don't modify filename of an unknown type" do
filename: "test.txt"
}
data = Upload.store(file, false)
{:ok, data} = Upload.store(file, dedupe: false)
assert data["name"] == "test.txt"
end
end