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Merge branch 'feature/reverse-proxy' into 'develop' 

reverse proxy / uploads

See merge request pleroma/pleroma!470
This commit is contained in:
kaniini 2018-11-30 18:15:44 +00:00
parent e99bab8f27 8e0e20631c
commit ca24ad2a2b
31 changed files with 1229 additions and 434 deletions
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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

20
config/config.exs
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@ -10,18 +10,18 @@ config :pleroma, ecto_repos: [Pleroma.Repo]
config :pleroma, Pleroma.Repo, types: Pleroma.PostgresTypes
# Upload configuration
config :pleroma, Pleroma.Upload,
uploader: Pleroma.Uploaders.Local,
strip_exif: false
filters: [],
proxy_remote: false,
proxy_opts: []
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 +150,11 @@ config :pleroma, :mrf_simple,
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

15
config/config.md
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@ -5,11 +5,19 @@ If you run Pleroma with ``MIX_ENV=prod`` the file is ``prod.secret.exs``, otherw
## Pleroma.Upload
* `uploader`: Select which `Pleroma.Uploaders` to use
* `strip_exif`: boolean, uses ImageMagick(!) to strip exif.
* `filters`: List of `Pleroma.Upload.Filter` to use.
* `base_url`: The base URL to access a user-uploaded file. Useful when you want to proxy the media files via another host.
* `proxy_remote`: If you're using a remote uploader, Pleroma will proxy media requests instead of redirecting to it.
* `proxy_opts`: Proxy options, see `Pleroma.ReverseProxy` documentation.
Note: `strip_exif` has been replaced by `Pleroma.Upload.Filter.Mogrify`.
## Pleroma.Uploaders.Local
* `uploads`: Which directory to store the user-uploads in, relative to pleroma’s working directory
* `uploads_url`: The URL to access a user-uploaded file, ``{{base_url}}`` is replaced to the instance URL and ``{{file}}`` to the filename. Useful when you want to proxy the media files via another host.
## Pleroma.Upload.Filter.Mogrify
* `args`: List of actions for the `mogrify` command like `"strip"` or `["strip", {"impode", "1"}]`.
## :uri_schemes
* `valid_schemes`: List of the scheme part that is considered valid to be an URL
@ -68,7 +76,8 @@ This section is used to configure Pleroma-FE, unless ``:managed_config`` in ``:i
## :media_proxy
* `enabled`: Enables proxying of remote media to the instance’s proxy
* `redirect_on_failure`: Use the original URL when Media Proxy fails to get it
* `base_url`: The base URL to access a user-uploaded file. Useful when you want to proxy the media files via another host/CDN fronts.
* `proxy_opts`: All options defined in `Pleroma.ReverseProxy` documentation, defaults to `[max_body_length: (25*1_048_576)]`.
## :gopher
* `enabled`: Enables the gopher interface

2
config/test.exs
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@ -9,7 +9,7 @@ config :pleroma, Pleroma.Web.Endpoint,
# 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,

4
installation/pleroma.nginx
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@ -70,10 +70,12 @@ server {
client_max_body_size 16m;
}
location /proxy {
location ~ ^/(media|proxy) {
proxy_cache pleroma_media_cache;
proxy_cache_lock on;
proxy_ignore_client_abort on;
proxy_buffering off;
chunked_transfer_encoding on;
proxy_pass http://localhost:4000;
}
}

97
lib/mix/tasks/migrate_local_uploads.ex Normal file
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@ -0,0 +1,97 @@
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)
|> Enum.map(fn id ->
root_path = Path.join(local_path, id)
cond do
File.dir?(root_path) ->
files = for file <- File.ls!(root_path), do: {id, file, Path.join([root_path, file])}
case List.first(files) do
{id, file, path} ->
{%Pleroma.Upload{id: id, name: file, path: id <> "/" <> file, tempfile: path},
root_path}
_ ->
nil
end
File.exists?(root_path) ->
file = Path.basename(id)
[hash, ext] = String.split(id, ".")
{%Pleroma.Upload{id: hash, name: file, path: file, tempfile: root_path}, root_path}
true ->
nil
end
end)
|> Enum.filter(& &1)
total_count = length(uploads)
Logger.info("Found #{total_count} uploads")
uploads
|> Task.async_stream(
fn {upload, root_path} ->
case Upload.store(upload, uploader: uploader, filters: [], size_limit: nil) do
{:ok, _} ->
if delete?, do: File.rm_rf!(root_path)
Logger.debug("uploaded: #{inspect(upload.path)} #{inspect(upload)}")
:ok
error ->
Logger.error("failed to upload #{inspect(upload.path)}: #{inspect(error)}")
end
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 S3|Swift [--delete]")
end
end

5
lib/pleroma/application.ex
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@ -8,6 +8,11 @@ defmodule Pleroma.Application do
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()

108
lib/pleroma/mime.ex Normal file
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@ -0,0 +1,108 @@
defmodule Pleroma.MIME do
@moduledoc """
Returns the mime-type of a binary and optionally a normalized file-name.
"""
@default "application/octet-stream"
@read_bytes 31
@spec file_mime_type(String.t()) ::
{:ok, content_type :: String.t(), filename :: String.t()} | {:error, any()} | :error
def file_mime_type(path, filename) do
with {:ok, content_type} <- file_mime_type(path),
filename <- fix_extension(filename, content_type) do
{:ok, content_type, filename}
end
end
@spec file_mime_type(String.t()) :: {:ok, String.t()} | {:error, any()} | :error
def file_mime_type(filename) do
File.open(filename, [:read], fn f ->
check_mime_type(IO.binread(f, @read_bytes))
end)
end
def bin_mime_type(binary, filename) do
with {:ok, content_type} <- bin_mime_type(binary),
filename <- fix_extension(filename, content_type) do
{:ok, content_type, filename}
end
end
@spec bin_mime_type(binary()) :: {:ok, String.t()} | :error
def bin_mime_type(<<head::binary-size(@read_bytes), _::binary>>) do
{:ok, check_mime_type(head)}
end
def mime_type(<<_::binary>>), do: {:ok, @default}
def bin_mime_type(_), do: :error
defp fix_extension(filename, content_type) do
parts = String.split(filename, ".")
new_filename =
if length(parts) > 1 do
Enum.drop(parts, -1) |> Enum.join(".")
else
Enum.join(parts)
end
cond do
content_type == "application/octet-stream" ->
filename
ext = List.first(MIME.extensions(content_type)) ->
new_filename <> "." <> ext
true ->
Enum.join([new_filename, String.split(content_type, "/") |> List.last()], ".")
end
end
defp check_mime_type(<<0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, _::binary>>) do
"image/png"
end
defp check_mime_type(<<0x47, 0x49, 0x46, 0x38, _, 0x61, _::binary>>) do
"image/gif"
end
defp check_mime_type(<<0xFF, 0xD8, 0xFF, _::binary>>) do
"image/jpeg"
end
defp check_mime_type(<<0x1A, 0x45, 0xDF, 0xA3, _::binary>>) do
"video/webm"
end
defp check_mime_type(<<0x00, 0x00, 0x00, _, 0x66, 0x74, 0x79, 0x70, _::binary>>) do
"video/mp4"
end
defp check_mime_type(<<0x49, 0x44, 0x33, _::binary>>) do
"audio/mpeg"
end
defp check_mime_type(<<255, 251, _, 68, 0, 0, 0, 0, _::binary>>) do
"audio/mpeg"
end
defp check_mime_type(
<<0x4F, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00, _::size(160), 0x80, 0x74, 0x68, 0x65,
0x6F, 0x72, 0x61, _::binary>>
) do
"video/ogg"
end
defp check_mime_type(<<0x4F, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00, _::binary>>) do
"audio/ogg"
end
defp check_mime_type(<<0x52, 0x49, 0x46, 0x46, _::binary>>) do
"audio/wav"
end
defp check_mime_type(_) do
@default
end
end

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

343
lib/pleroma/reverse_proxy.ex Normal file
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@ -0,0 +1,343 @@
defmodule Pleroma.ReverseProxy do
@keep_req_headers ~w(accept user-agent accept-encoding cache-control if-modified-since if-unmodified-since if-none-match if-range range)
@resp_cache_headers ~w(etag date last-modified cache-control)
@keep_resp_headers @resp_cache_headers ++
~w(content-type content-disposition content-encoding content-range accept-ranges vary)
@default_cache_control_header "public, max-age=1209600"
@valid_resp_codes [200, 206, 304]
@max_read_duration :timer.seconds(30)
@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_length_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 get_content_type(headers) do
{_, content_type} =
List.keyfind(headers, "content-type", 0, {"content-type", "application/octet-stream"})
[content_type | _] = String.split(content_type, ";")
content_type
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
|> 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 = get_content_type(headers)
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_length_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_length_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
{: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

364
lib/pleroma/upload.ex
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@ -1,81 +1,209 @@
defmodule Pleroma.Upload do
@moduledoc """
# Upload
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
def check_file_size(path, nil), do: true
@type source ::
Plug.Upload.t() | data_uri_string ::
String.t() | {:from_local, name :: String.t(), id :: String.t(), path :: String.t()}
def check_file_size(path, size_limit) do
{:ok, %{size: size}} = File.stat(path)
size <= size_limit
end
@type option ::
{:type, :avatar | :banner | :background}
| {:description, String.t()}
| {:activity_type, String.t()}
| {:size_limit, nil | non_neg_integer()}
| {:uploader, module()}
| {:filters, [module()]}
def store(file, should_dedupe, size_limit \\ nil)
@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]
def store(%Plug.Upload{} = file, should_dedupe, size_limit) do
content_type = get_content_type(file.path)
@spec store(source, options :: [option()]) :: {:ok, Map.t()} | {:error, any()}
def store(upload, opts \\ []) do
opts = get_opts(opts)
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, 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(opts.base_url, url_spec)
}
],
"name" => Map.get(opts, :description) || upload.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
{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"
""")
Pleroma.Config.put([Pleroma.Upload.Filter.Mogrify], args: "strip")
Map.put(opts, :filters, opts.filters ++ [Pleroma.Upload.Filter.Mogrify])
else
opts
end
opts =
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(upload = %__MODULE__{tempfile: path}, _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)
@ -83,108 +211,12 @@ defmodule Pleroma.Upload do
tmp_path
end
def 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, "/")
if filetype == "image" and do_strip == true do
Mogrify.open(file) |> Mogrify.custom("strip") |> Mogrify.save(in_place: true)
end
defp url_from_spec(base_url, {:file, path}) do
[base_url, "media", path]
|> Path.join()
end
defp create_name(uuid, ext, type) do
case type do
"application/octet-stream" ->
String.downcase(Enum.join([uuid, ext], "."))
"audio/mpeg" ->
String.downcase(Enum.join([uuid, "mp3"], "."))
_ ->
String.downcase(Enum.join([uuid, List.last(String.split(type, "/"))], "."))
end
end
defp get_uuid(file, should_dedupe) do
if should_dedupe do
Base.encode16(:crypto.hash(:sha256, File.read!(file.path)))
else
UUID.generate()
end
end
defp get_name(file, uuid, type, should_dedupe) do
if should_dedupe do
create_name(uuid, List.last(String.split(file.filename, ".")), type)
else
parts = String.split(file.filename, ".")
new_filename =
if length(parts) > 1 do
Enum.drop(parts, -1) |> Enum.join(".")
else
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()], ".")
end
end
end
def get_content_type(file) do
match =
File.open(file, [:read], fn f ->
case IO.binread(f, 8) do
<<0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A>> ->
"image/png"
<<0x47, 0x49, 0x46, 0x38, _, 0x61, _, _>> ->
"image/gif"
<<0xFF, 0xD8, 0xFF, _, _, _, _, _>> ->
"image/jpeg"
<<0x1A, 0x45, 0xDF, 0xA3, _, _, _, _>> ->
"video/webm"
<<0x00, 0x00, 0x00, _, 0x66, 0x74, 0x79, 0x70>> ->
"video/mp4"
<<0x49, 0x44, 0x33, _, _, _, _, _>> ->
"audio/mpeg"
<<255, 251, _, 68, 0, 0, 0, 0>> ->
"audio/mpeg"
<<0x4F, 0x67, 0x67, 0x53, 0x00, 0x02, 0x00, 0x00>> ->
case IO.binread(f, 27) do
<<_::size(160), 0x80, 0x74, 0x68, 0x65, 0x6F, 0x72, 0x61>> ->
"video/ogg"
_ ->
"audio/ogg"
end
<<0x52, 0x49, 0x46, 0x46, _, _, _, _>> ->
"audio/wav"
_ ->
"application/octet-stream"
end
end)
case match do
{:ok, type} -> type
_e -> "application/octet-stream"
end
end
defp uploader() do
Pleroma.Config.get!([Pleroma.Upload, :uploader])
defp url_from_spec({:url, url}) do
url
end
end

35
lib/pleroma/upload/filter.ex Normal file
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@ -0,0 +1,35 @@
defmodule Pleroma.Upload.Filter do
@moduledoc """
Upload Filter behaviour
This behaviour allows to run filtering actions just before a file is uploaded. This allows to:
* morph in place the temporary file
* change any field of a `Pleroma.Upload` struct
* cancel/stop the upload
"""
require Logger
@callback filter(Pleroma.Upload.t()) :: :ok | {:ok, Pleroma.Upload.t()} | {:error, any()}
@spec filter([module()], Pleroma.Upload.t()) :: {:ok, Pleroma.Upload.t()} | {:error, any()}
def filter([], upload) do
{:ok, upload}
end
def filter([filter | rest], upload) do
case filter.filter(upload) do
:ok ->
filter(rest, upload)
{:ok, upload} ->
filter(rest, upload)
error ->
Logger.error("#{__MODULE__}: Filter #{filter} failed: #{inspect(error)}")
error
end
end
end

10
lib/pleroma/upload/filter/dedupe.ex Normal file
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@ -0,0 +1,10 @@
defmodule Pleroma.Upload.Filter.Dedupe do
@behaviour Pleroma.Upload.Filter
def filter(upload = %Pleroma.Upload{name: name, tempfile: path}) do
extension = String.split(name, ".") |> List.last()
shasum = :crypto.hash(:sha256, File.read!(upload.tempfile)) |> Base.encode16(case: :lower)
filename = shasum <> "." <> extension
{:ok, %Pleroma.Upload{upload | id: shasum, path: filename}}
end
end

60
lib/pleroma/upload/filter/mogrifun.ex Normal file
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@ -0,0 +1,60 @@
defmodule Pleroma.Upload.Filter.Mogrifun do
@behaviour Pleroma.Upload.Filter
@filters [
{"implode", "1"},
{"-raise", "20"},
{"+raise", "20"},
[{"-interpolate", "nearest"}, {"-virtual-pixel", "mirror"}, {"-spread", "5"}],
"+polaroid",
{"-statistic", "Mode 10"},
{"-emboss", "0x1.1"},
{"-emboss", "0x2"},
{"-colorspace", "Gray"},
"-negate",
[{"-channel", "green"}, "-negate"],
[{"-channel", "red"}, "-negate"],
[{"-channel", "blue"}, "-negate"],
{"+level-colors", "green,gold"},
{"+level-colors", ",DodgerBlue"},
{"+level-colors", ",Gold"},
{"+level-colors", ",Lime"},
{"+level-colors", ",Red"},
{"+level-colors", ",DarkGreen"},
{"+level-colors", "firebrick,yellow"},
{"+level-colors", "'rgb(102,75,25)',lemonchiffon"},
[{"fill", "red"}, {"tint", "40"}],
[{"fill", "green"}, {"tint", "40"}],
[{"fill", "blue"}, {"tint", "40"}],
[{"fill", "yellow"}, {"tint", "40"}]
]
def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
filter = Enum.random(@filters)
file
|> Mogrify.open()
|> mogrify_filter(filter)
|> Mogrify.save(in_place: true)
:ok
end
def filter(_), do: :ok
defp mogrify_filter(mogrify, [filter | rest]) do
mogrify
|> mogrify_filter(filter)
|> mogrify_filter(rest)
end
defp mogrify_filter(mogrify, []), do: mogrify
defp mogrify_filter(mogrify, {action, options}) do
Mogrify.custom(mogrify, action, options)
end
defp mogrify_filter(mogrify, string) when is_binary(string) do
Mogrify.custom(mogrify, string)
end
end

37
lib/pleroma/upload/filter/mogrify.ex Normal file
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@ -0,0 +1,37 @@
defmodule Pleroma.Upload.Filter.Mogrify do
@behaviour Pleroma.Uploader.Filter
@type conversion :: action :: String.t() | {action :: String.t(), opts :: String.t()}
@type conversions :: conversion() | [conversion()]
def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
filters = Pleroma.Config.get!([__MODULE__, :args])
file
|> Mogrify.open()
|> mogrify_filter(filters)
|> Mogrify.save(in_place: true)
:ok
end
def filter(_), do: :ok
defp mogrify_filter(mogrify, nil), do: mogrify
defp mogrify_filter(mogrify, [filter | rest]) do
mogrify
|> mogrify_filter(filter)
|> mogrify_filter(rest)
end
defp mogrify_filter(mogrify, []), do: mogrify
defp mogrify_filter(mogrify, {action, options}) do
Mogrify.custom(mogrify, action, options)
end
defp mogrify_filter(mogrify, action) when is_binary(action) do
Mogrify.custom(mogrify, action)
end
end

55
lib/pleroma/uploaders/local.ex
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@ -3,49 +3,32 @@ 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
File.mkdir_p!(upload_folder)
def put_file(upload) do
{local_path, file} =
case Enum.reverse(String.split(upload.path, "/", trim: true)) do
[file] ->
{upload_path(), file}
result_file = Path.join(upload_folder, name)
[file | folders] ->
path = Path.join([upload_path()] ++ Enum.reverse(folders))
File.mkdir_p!(path)
{path, file}
end
if File.exists?(result_file) do
File.rm!(tmpfile)
else
File.cp!(tmpfile, result_file)
result_file = Path.join(local_path, file)
unless File.exists?(result_file) do
File.cp!(upload.tempfile, result_file)
end
{:ok, url_path}
:ok
end
def upload_path do
settings = Application.get_env(:pleroma, Pleroma.Uploaders.Local)
Keyword.fetch!(settings, :uploads)
end
defp get_upload_path(uuid, should_dedupe) do
if should_dedupe do
upload_path()
else
Path.join(upload_path(), uuid)
end
end
defp get_url(name, uuid, should_dedupe) do
if should_dedupe do
url_for(:cow_uri.urlencode(name))
else
url_for(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())
Pleroma.Config.get!([__MODULE__, :uploads])
end
end

17
lib/pleroma/uploaders/mdii.ex
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@ -5,22 +5,27 @@ 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(upload) do
cgi = Pleroma.Config.get([Pleroma.Uploaders.MDII, :cgi])
files = Pleroma.Config.get([Pleroma.Uploaders.MDII, :files])
{:ok, file_data} = File.read(path)
{:ok, file_data} = File.read(upload.tempfile)
extension = String.split(name, ".") |> List.last()
extension = String.split(upload.name, ".") |> List.last()
query = "#{cgi}?#{extension}"
with {:ok, %{status_code: 200, body: body}} <- @httpoison.post(query, file_data) 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(upload)
end
end
end

54
lib/pleroma/uploaders/s3.ex
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@ -1,40 +1,46 @@
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, file_data} = File.read(path)
{:ok,
{:url,
Path.join([
Keyword.fetch!(config, :public_endpoint),
Keyword.fetch!(config, :bucket),
strict_encode(URI.decode(file))
])}}
end
File.rm!(path)
def put_file(upload = %Pleroma.Upload{}) do
config = Pleroma.Config.get([__MODULE__])
bucket = Keyword.get(config, :bucket)
s3_name = "#{uuid}/#{encode(name)}"
{:ok, file_data} = File.read(upload.tempfile)
{:ok, _} =
s3_name = strict_encode(upload.path)
op =
ExAws.S3.put_object(bucket, s3_name, file_data, [
{:acl, :public_read},
{:content_type, content_type}
{:content_type, upload.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
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@ -14,7 +14,7 @@ defmodule Pleroma.Uploaders.Swift.Client 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"}

13
lib/pleroma/uploaders/swift/uploader.ex
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@ -1,10 +1,15 @@
defmodule Pleroma.Uploaders.Swift do
@behaviour Pleroma.Uploaders.Uploader
def put_file(name, uuid, tmp_path, content_type, _should_dedupe) do
{:ok, file_data} = File.read(tmp_path)
remote_name = "#{uuid}/#{name}"
def get_file(name) do
{:ok, {:url, Path.join([Pleroma.Config.get!([__MODULE__, :object_url]), name])}}
end
Pleroma.Uploaders.Swift.Client.upload_file(remote_name, file_data, content_type)
def put_file(upload) do
Pleroma.Uploaders.Swift.Client.upload_file(
upload.path,
File.read!(upload.tmpfile),
upload.content_type
)
end
end

42
lib/pleroma/uploaders/uploader.ex
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@ -1,20 +1,40 @@
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` which assumes `{:ok, upload.path}`
* `{: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()}
@callback put_file(Pleroma.Upload.t()) ::
:ok | {:ok, {:file | :url, String.t()}} | {:error, String.t()}
@spec put_file(module(), Pleroma.Upload.t()) ::
{:ok, {:file | :url, String.t()}} | {:error, String.t()}
def put_file(uploader, upload) do
case uploader.put_file(upload) do
:ok -> {:ok, {:file, upload.path}}
other -> other
end
end
end

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

@ -572,10 +572,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub 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,

25
lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
View File

@ -35,14 +35,6 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
def update_credentials(%{assigns: %{user: user}} = conn, params) do
original_user = user
avatar_upload_limit =
Application.get_env(:pleroma, :instance)
|> Keyword.fetch(:avatar_upload_limit)
banner_upload_limit =
Application.get_env(:pleroma, :instance)
|> Keyword.fetch(:banner_upload_limit)
params =
if bio = params["note"] do
Map.put(params, "bio", bio)
@ -60,7 +52,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
user =
if avatar = params["avatar"] do
with %Plug.Upload{} <- avatar,
{:ok, object} <- ActivityPub.upload(avatar, avatar_upload_limit),
{:ok, object} <- ActivityPub.upload(avatar, type: :avatar),
change = Ecto.Changeset.change(user, %{avatar: object.data}),
{:ok, user} = User.update_and_set_cache(change) do
user
@ -74,7 +66,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
user =
if banner = params["header"] do
with %Plug.Upload{} <- banner,
{:ok, object} <- ActivityPub.upload(banner, banner_upload_limit),
{:ok, object} <- ActivityPub.upload(banner, type: :banner),
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
@ -471,19 +463,12 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
end
def upload(%{assigns: %{user: _}} = conn, %{"file" => file} = data) do
with {:ok, object} <- ActivityPub.upload(file) do
objdata =
if Map.has_key?(data, "description") do
Map.put(object.data, "name", data["description"])
else
object.data
end
change = Object.change(object, %{data: objdata})
with {:ok, object} <- ActivityPub.upload(file, description: Map.get(data, "description")) do
change = Object.change(object, %{data: object.data})
{:ok, object} = Repo.update(change)
objdata =
objdata
object.data
|> Map.put("id", object.id)
render(conn, StatusView, "attachment.json", %{attachment: objdata})

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

@ -1,135 +1,34 @@
defmodule Pleroma.Web.MediaProxy.MediaProxyController do
use Pleroma.Web, :controller
require Logger
alias Pleroma.{Web.MediaProxy, ReverseProxy}
@httpoison Application.get_env(:pleroma, :httpoison)
@default_proxy_opts [max_body_length: 25 * 1_048_576]
@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, @default_proxy_length))
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 @@ defmodule Pleroma.Web.MediaProxy 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 @@ defmodule Pleroma.Web.MediaProxy 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 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI 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

18
lib/pleroma/web/twitter_api/twitter_api_controller.ex
View File

@ -290,11 +290,7 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
end
def update_avatar(%{assigns: %{user: user}} = conn, params) do
upload_limit =
Application.get_env(:pleroma, :instance)
|> Keyword.fetch(:avatar_upload_limit)
{:ok, object} = ActivityPub.upload(params, upload_limit)
{:ok, object} = ActivityPub.upload(params, type: :avatar)
change = Changeset.change(user, %{avatar: object.data})
{:ok, user} = User.update_and_set_cache(change)
CommonAPI.update(user)
@ -303,11 +299,7 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
end
def update_banner(%{assigns: %{user: user}} = conn, params) do
upload_limit =
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"]}, type: :banner),
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
@ -321,11 +313,7 @@ defmodule Pleroma.Web.TwitterAPI.Controller do
end
def update_background(%{assigns: %{user: user}} = conn, params) do
upload_limit =
Application.get_env(:pleroma, :instance)
|> Keyword.fetch(:background_upload_limit)
with {:ok, object} <- ActivityPub.upload(params, upload_limit),
with {:ok, object} <- ActivityPub.upload(params, type: :background),
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

17
test/media_proxy_test.exs
View File

@ -82,6 +82,23 @@ defmodule Pleroma.MediaProxyTest do
[_, "proxy", sig, base64 | _] = URI.parse(encoded).path |> String.split("/")
assert decode_url(sig, base64) == {:error, :invalid_signature}
end
test "uses the configured base_url" do
base_url = Pleroma.Config.get([:media_proxy, :base_url])
if base_url do
on_exit(fn ->
Pleroma.Config.put([:media_proxy, :base_url], base_url)
end)
end
Pleroma.Config.put([:media_proxy, :base_url], "https://cache.pleroma.social")
url = "https://pleroma.soykaf.com/static/logo.png"
encoded = url(url)
assert String.starts_with?(encoded, Pleroma.Config.get([:media_proxy, :base_url]))
end
end
describe "when disabled" 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

70
test/upload_test.exs
View File

@ -2,7 +2,58 @@ 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])
filters = Pleroma.Config.get([Pleroma.Upload, :filters])
unless uploader == Pleroma.Uploaders.Local || filters != [] do
Pleroma.Config.put([Pleroma.Upload, :uploader], Pleroma.Uploaders.Local)
Pleroma.Config.put([Pleroma.Upload, :filters], [])
on_exit(fn ->
Pleroma.Config.put([Pleroma.Upload, :uploader], uploader)
Pleroma.Config.put([Pleroma.Upload, :filters], filters)
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 "returns a media url with configured base_url" do
base_url = "https://cache.pleroma.social"
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, base_url: base_url)
assert %{"url" => [%{"href" => url}]} = data
assert String.starts_with?(url, 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")
@ -12,10 +63,11 @@ defmodule Pleroma.UploadTest do
filename: "an [image.jpg"
}
data = Upload.store(file, true)
{:ok, data} = Upload.store(file, filters: [Pleroma.Upload.Filter.Dedupe])
assert data["name"] ==
"e7a6d0cf595bff76f14c9a98b6c199539559e8b844e02e51e5efcfd1f614a2df.jpeg"
assert List.first(data["url"])["href"] ==
Pleroma.Web.base_url() <>
"/media/e7a6d0cf595bff76f14c9a98b6c199539559e8b844e02e51e5efcfd1f614a2df.jpg"
end
test "copies the file to the configured folder without deduping" do
@ -27,7 +79,7 @@ defmodule Pleroma.UploadTest do
filename: "an [image.jpg"
}
data = Upload.store(file, false)
{:ok, data} = Upload.store(file)
assert data["name"] == "an [image.jpg"
end
@ -40,7 +92,7 @@ defmodule Pleroma.UploadTest do
filename: "an [image.jpg"
}
data = Upload.store(file, true)
{:ok, data} = Upload.store(file, filters: [Pleroma.Upload.Filter.Dedupe])
assert hd(data["url"])["mediaType"] == "image/jpeg"
end
@ -53,7 +105,7 @@ defmodule Pleroma.UploadTest do
filename: "an [image"
}
data = Upload.store(file, false)
{:ok, data} = Upload.store(file)
assert data["name"] == "an [image.jpg"
end
@ -66,7 +118,7 @@ defmodule Pleroma.UploadTest do
filename: "an [image.blah"
}
data = Upload.store(file, false)
{:ok, data} = Upload.store(file)
assert data["name"] == "an [image.jpg"
end
@ -79,7 +131,7 @@ defmodule Pleroma.UploadTest do
filename: "test.txt"
}
data = Upload.store(file, false)
{:ok, data} = Upload.store(file)
assert data["name"] == "test.txt"
end
end