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lain 2018-03-30 15:01:53 +02:00
commit 4afbef39f4
111 changed files with 4912 additions and 2769 deletions
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57
lib/pleroma/web/media_proxy/controller.ex
View file

@ -4,47 +4,59 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
@httpoison Application.get_env(:pleroma, :httpoison)
@max_body_length 25 * 1048576
@max_body_length 25 * 1_048_576
@cache_control %{
default: "public, max-age=1209600",
error: "public, must-revalidate, max-age=160",
error: "public, must-revalidate, max-age=160"
}
def remote(conn, %{"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),
{:ok, content_type, body} <- proxy_request(url)
do
with true <- Keyword.get(config, :enabled, false),
{:ok, url} <- Pleroma.Web.MediaProxy.decode_url(sig, url),
{:ok, content_type, body} <- proxy_request(url) do
conn
|> put_resp_content_type(content_type)
|> set_cache_header(:default)
|> send_resp(200, body)
else
false -> send_error(conn, 404)
{:error, :invalid_signature} -> send_error(conn, 403)
{:error, {:http, _, url}} -> redirect_or_error(conn, url, Keyword.get(config, :redirect_on_failure, true))
false ->
send_error(conn, 404)
{:error, :invalid_signature} ->
send_error(conn, 403)
{:error, {:http, _, url}} ->
redirect_or_error(conn, url, Keyword.get(config, :redirect_on_failure, true))
end
end
defp proxy_request(link) do
headers = [{"user-agent", "Pleroma/MediaProxy; #{Pleroma.Web.base_url()} <#{Application.get_env(:pleroma, :instance)[:email]}>"}]
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
headers = [
{"user-agent",
"Pleroma/MediaProxy; #{Pleroma.Web.base_url()} <#{
Application.get_env(:pleroma, :instance)[:email]
}>"}
]
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}"
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}"
Logger.warn("MediaProxy: request failed, error #{inspect(error)}, link: #{link}")
{:error, {:http, error, link}}
end
end
@ -63,13 +75,15 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
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>>)
{: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}
@ -80,5 +94,4 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
defp proxy_request_content_type(headers, _body) do
headers["Content-Type"] || headers["content-type"] || "image/jpeg"
end
end

7
lib/pleroma/web/media_proxy/media_proxy.ex
View file

@ -7,14 +7,15 @@ defmodule Pleroma.Web.MediaProxy do
def url(url) do
config = Application.get_env(:pleroma, :media_proxy, [])
if !Keyword.get(config, :enabled, false) or String.starts_with?(url, Pleroma.Web.base_url) do
if !Keyword.get(config, :enabled, false) or String.starts_with?(url, Pleroma.Web.base_url()) do
url
else
secret = Application.get_env(:pleroma, Pleroma.Web.Endpoint)[:secret_key_base]
base64 = Base.url_encode64(url, @base64_opts)
sig = :crypto.hmac(:sha, secret, base64)
sig64 = sig |> Base.url_encode64(@base64_opts)
Keyword.get(config, :base_url, Pleroma.Web.base_url) <> "/proxy/#{sig64}/#{base64}"
Keyword.get(config, :base_url, Pleroma.Web.base_url()) <> "/proxy/#{sig64}/#{base64}"
end
end
@ -22,11 +23,11 @@ defmodule Pleroma.Web.MediaProxy do
secret = Application.get_env(:pleroma, Pleroma.Web.Endpoint)[:secret_key_base]
sig = Base.url_decode64!(sig, @base64_opts)
local_sig = :crypto.hmac(:sha, secret, url)
if local_sig == sig do
{:ok, Base.url_decode64!(url, @base64_opts)}
else
{:error, :invalid_signature}
end
end
end