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Expand and authorize streams in Streamer directly (backport from !2519)

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This commit is contained in:
href 2020-05-12 21:06:23 +02:00
parent a6283bbae1
commit 37c2deb3dd
6 changed files with 180 additions and 100 deletions
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69
lib/pleroma/web/mastodon_api/websocket_handler.ex
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@ -12,29 +12,15 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
@behaviour :cowboy_websocket
@streams [
"public",
"public:local",
"public:media",
"public:local:media",
"user",
"user:notification",
"direct",
"list",
"hashtag"
]
@anonymous_streams ["public", "public:local", "hashtag"]
# Handled by periodic keepalive in Pleroma.Web.Streamer.Ping.
@timeout :infinity
def init(%{qs: qs} = req, state) do
with params <- :cow_qs.parse_qs(qs),
with params <- Enum.into(:cow_qs.parse_qs(qs), %{}),
sec_websocket <- :cowboy_req.header("sec-websocket-protocol", req, nil),
access_token <- List.keyfind(params, "access_token", 0),
{_, stream} <- List.keyfind(params, "stream", 0),
{:ok, user} <- allow_request(stream, [access_token, sec_websocket]),
topic when is_binary(topic) <- expand_topic(stream, params) do
access_token <- Map.get(params, "access_token"),
{:ok, user} <- authenticate_request(access_token, sec_websocket),
{:ok, topic} <- Streamer.get_topic(Map.get(params, "stream"), user, params) do
req =
if sec_websocket do
:cowboy_req.set_resp_header("sec-websocket-protocol", sec_websocket, req)
@ -44,14 +30,14 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
{:cowboy_websocket, req, %{user: user, topic: topic}, %{idle_timeout: @timeout}}
else
{:error, code} ->
Logger.debug("#{__MODULE__} denied connection: #{inspect(code)} - #{inspect(req)}")
{:ok, req} = :cowboy_req.reply(code, req)
{:error, :bad_topic} ->
Logger.debug("#{__MODULE__} bad topic #{inspect(req)}")
{:ok, req} = :cowboy_req.reply(404, req)
{:ok, req, state}
error ->
Logger.debug("#{__MODULE__} denied connection: #{inspect(error)} - #{inspect(req)}")
{:ok, req} = :cowboy_req.reply(400, req)
{:error, :unauthorized} ->
Logger.debug("#{__MODULE__} authentication error: #{inspect(req)}")
{:ok, req} = :cowboy_req.reply(401, req)
{:ok, req, state}
end
end
@ -93,50 +79,23 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
end
# Public streams without authentication.
defp allow_request(stream, [nil, nil]) when stream in @anonymous_streams do
defp authenticate_request(nil, nil) do
{:ok, nil}
end
# Authenticated streams.
defp allow_request(stream, [access_token, sec_websocket]) when stream in @streams do
token =
with {"access_token", token} <- access_token do
token
else
_ -> sec_websocket
end
defp authenticate_request(access_token, sec_websocket) do
token = access_token || sec_websocket
with true <- is_bitstring(token),
%Token{user_id: user_id} <- Repo.get_by(Token, token: token),
user = %User{} <- User.get_cached_by_id(user_id) do
{:ok, user}
else
_ -> {:error, 403}
_ -> {:error, :unauthorized}
end
end
# Not authenticated.
defp allow_request(stream, _) when stream in @streams, do: {:error, 403}
# No matching stream.
defp allow_request(_, _), do: {:error, 404}
defp expand_topic("hashtag", params) do
case List.keyfind(params, "tag", 0) do
{_, tag} -> "hashtag:#{tag}"
_ -> nil
end
end
defp expand_topic("list", params) do
case List.keyfind(params, "list", 0) do
{_, list} -> "list:#{list}"
_ -> nil
end
end
defp expand_topic(topic, _), do: topic
defp streamer_socket(state) do
%{transport_pid: self(), assigns: state}
end

19
lib/pleroma/web/streamer/state.ex
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@ -36,30 +36,28 @@ defmodule Pleroma.Web.Streamer.State do
end
def handle_call({:add, topic, socket}, _from, %{sockets: sockets} = state) do
internal_topic = internal_topic(topic, socket)
stream_socket = StreamerSocket.from_socket(socket)
sockets_for_topic =
sockets
|> Map.get(internal_topic, [])
|> Map.get(topic, [])
|> List.insert_at(0, stream_socket)
|> Enum.uniq()
state = put_in(state, [:sockets, internal_topic], sockets_for_topic)
state = put_in(state, [:sockets, topic], sockets_for_topic)
Logger.debug("Got new conn for #{topic}")
{:reply, state, state}
end
def handle_call({:remove, topic, socket}, _from, %{sockets: sockets} = state) do
internal_topic = internal_topic(topic, socket)
stream_socket = StreamerSocket.from_socket(socket)
sockets_for_topic =
sockets
|> Map.get(internal_topic, [])
|> Map.get(topic, [])
|> List.delete(stream_socket)
state = Kernel.put_in(state, [:sockets, internal_topic], sockets_for_topic)
state = Kernel.put_in(state, [:sockets, topic], sockets_for_topic)
{:reply, state, state}
end
@ -70,13 +68,4 @@ defmodule Pleroma.Web.Streamer.State do
defp do_remove_socket(_env, topic, socket) do
GenServer.call(__MODULE__, {:remove, topic, socket})
end
defp internal_topic(topic, socket)
when topic in ~w[user user:notification direct] do
"#{topic}:#{socket.assigns[:user].id}"
end
defp internal_topic(topic, _) do
topic
end
end

65
lib/pleroma/web/streamer/streamer.ex
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@ -5,10 +5,75 @@
defmodule Pleroma.Web.Streamer do
alias Pleroma.Web.Streamer.State
alias Pleroma.Web.Streamer.Worker
alias Pleroma.User
@timeout 60_000
@mix_env Mix.env()
@public_streams ["public", "public:local", "public:media", "public:local:media"]
@user_streams ["user", "user:notification", "direct"]
@doc "Expands and authorizes a stream, and registers the process for streaming."
@spec get_topic_and_add_socket(stream :: String.t(), State.t(), Map.t() | nil) ::
{:ok, topic :: String.t()} | {:error, :bad_topic} | {:error, :unauthorized}
def get_topic_and_add_socket(stream, socket, params \\ %{}) do
user =
case socket do
%{assigns: %{user: user}} -> user
_ -> nil
end
case get_topic(stream, user, params) do
{:ok, topic} ->
add_socket(topic, socket)
{:ok, topic}
error ->
error
end
end
@doc "Expand and authorizes a stream"
@spec get_topic(stream :: String.t(), User.t() | nil, Map.t()) ::
{:ok, topic :: String.t()} | {:error, :bad_topic}
def get_topic(stream, user, params \\ %{})
# Allow all public steams.
def get_topic(stream, _, _) when stream in @public_streams do
{:ok, stream}
end
# Allow all hashtags streams.
def get_topic("hashtag", _, %{"tag" => tag}) do
{:ok, "hashtag:" <> tag}
end
# Expand user streams.
def get_topic(stream, %User{} = user, _) when stream in @user_streams do
{:ok, stream <> ":" <> to_string(user.id)}
end
def get_topic(stream, _, _) when stream in @user_streams do
{:error, :unauthorized}
end
# List streams.
def get_topic("list", %User{} = user, %{"list" => id}) do
if Pleroma.List.get(id, user) do
{:ok, "list:" <> to_string(id)}
else
{:error, :bad_topic}
end
end
def get_topic("list", _, _) do
{:error, :unauthorized}
end
def get_topic(_, _, _) do
{:error, :bad_topic}
end
def add_socket(topic, socket) do
State.add_socket(topic, socket)
end

12
test/integration/mastodon_websocket_test.exs
View File

@ -35,7 +35,7 @@ defmodule Pleroma.Integration.MastodonWebsocketTest do
test "refuses invalid requests" do
capture_log(fn ->
assert {:error, {400, _}} = start_socket()
assert {:error, {404, _}} = start_socket()
assert {:error, {404, _}} = start_socket("?stream=ncjdk")
Process.sleep(30)
end)
@ -43,8 +43,8 @@ defmodule Pleroma.Integration.MastodonWebsocketTest do
test "requires authentication and a valid token for protected streams" do
capture_log(fn ->
assert {:error, {403, _}} = start_socket("?stream=user&access_token=aaaaaaaaaaaa")
assert {:error, {403, _}} = start_socket("?stream=user")
assert {:error, {401, _}} = start_socket("?stream=user&access_token=aaaaaaaaaaaa")
assert {:error, {401, _}} = start_socket("?stream=user")
Process.sleep(30)
end)
end
@ -103,7 +103,7 @@ defmodule Pleroma.Integration.MastodonWebsocketTest do
assert {:ok, _} = start_socket("?stream=user&access_token=#{token.token}")
assert capture_log(fn ->
assert {:error, {403, "Forbidden"}} = start_socket("?stream=user")
assert {:error, {401, _}} = start_socket("?stream=user")
Process.sleep(30)
end) =~ ":badarg"
end
@ -112,7 +112,7 @@ defmodule Pleroma.Integration.MastodonWebsocketTest do
assert {:ok, _} = start_socket("?stream=user:notification&access_token=#{token.token}")
assert capture_log(fn ->
assert {:error, {403, "Forbidden"}} = start_socket("?stream=user:notification")
assert {:error, {401, _}} = start_socket("?stream=user:notification")
Process.sleep(30)
end) =~ ":badarg"
end
@ -121,7 +121,7 @@ defmodule Pleroma.Integration.MastodonWebsocketTest do
assert {:ok, _} = start_socket("?stream=user", [{"Sec-WebSocket-Protocol", token.token}])
assert capture_log(fn ->
assert {:error, {403, "Forbidden"}} =
assert {:error, {401, _}} =
start_socket("?stream=user", [{"Sec-WebSocket-Protocol", "I am a friend"}])
Process.sleep(30)

11
test/notification_test.exs
View File

@ -164,12 +164,13 @@ defmodule Pleroma.NotificationTest do
user = insert(:user)
task = Task.async(fn -> assert_receive {:text, _}, 4_000 end)
task_user_notification = Task.async(fn -> assert_receive {:text, _}, 4_000 end)
Streamer.add_socket("user", %{transport_pid: task.pid, assigns: %{user: user}})
Streamer.add_socket(
"user:notification",
%{transport_pid: task_user_notification.pid, assigns: %{user: user}}
)
Streamer.get_topic_and_add_socket("user", %{transport_pid: task.pid, assigns: %{user: user}})
Streamer.get_topic_and_add_socket("user:notification", %{
transport_pid: task_user_notification.pid,
assigns: %{user: user}
})
activity = insert(:note_activity)

104
test/web/streamer/streamer_test.exs
View File

@ -17,11 +17,81 @@ defmodule Pleroma.Web.StreamerTest do
@moduletag needs_streamer: true, capture_log: true
@streamer_timeout 150
@streamer_timeout 300
@streamer_start_wait 10
clear_config([:instance, :skip_thread_containment])
describe "get_topic without an user" do
test "allows public" do
assert {:ok, "public"} = Streamer.get_topic("public", nil)
assert {:ok, "public:local"} = Streamer.get_topic("public:local", nil)
assert {:ok, "public:media"} = Streamer.get_topic("public:media", nil)
assert {:ok, "public:local:media"} = Streamer.get_topic("public:local:media", nil)
end
test "allows hashtag streams" do
assert {:ok, "hashtag:cofe"} = Streamer.get_topic("hashtag", nil, %{"tag" => "cofe"})
end
test "disallows user streams" do
assert {:error, _} = Streamer.get_topic("user", nil)
assert {:error, _} = Streamer.get_topic("user:notification", nil)
assert {:error, _} = Streamer.get_topic("direct", nil)
end
test "disallows list streams" do
assert {:error, _} = Streamer.get_topic("list", nil, %{"list" => 42})
end
end
describe "get_topic with an user" do
setup do
user = insert(:user)
{:ok, %{user: user}}
end
test "allows public streams", %{user: user} do
assert {:ok, "public"} = Streamer.get_topic("public", user)
assert {:ok, "public:local"} = Streamer.get_topic("public:local", user)
assert {:ok, "public:media"} = Streamer.get_topic("public:media", user)
assert {:ok, "public:local:media"} = Streamer.get_topic("public:local:media", user)
end
test "allows user streams", %{user: user} do
expected_user_topic = "user:#{user.id}"
expected_notif_topic = "user:notification:#{user.id}"
expected_direct_topic = "direct:#{user.id}"
assert {:ok, ^expected_user_topic} = Streamer.get_topic("user", user)
assert {:ok, ^expected_notif_topic} = Streamer.get_topic("user:notification", user)
assert {:ok, ^expected_direct_topic} = Streamer.get_topic("direct", user)
end
test "allows hashtag streams", %{user: user} do
assert {:ok, "hashtag:cofe"} = Streamer.get_topic("hashtag", user, %{"tag" => "cofe"})
end
test "disallows registering to an user stream", %{user: user} do
another_user = insert(:user)
assert {:error, _} = Streamer.get_topic("user:#{another_user.id}", user)
assert {:error, _} = Streamer.get_topic("user:notification:#{another_user.id}", user)
assert {:error, _} = Streamer.get_topic("direct:#{another_user.id}", user)
end
test "allows list stream that are owned by the user", %{user: user} do
{:ok, list} = List.create("Test", user)
assert {:error, _} = Streamer.get_topic("list:#{list.id}", user)
assert {:ok, _} = Streamer.get_topic("list", user, %{"list" => list.id})
end
test "disallows list stream that are not owned by the user", %{user: user} do
another_user = insert(:user)
{:ok, list} = List.create("Test", another_user)
assert {:error, _} = Streamer.get_topic("list:#{list.id}", user)
assert {:error, _} = Streamer.get_topic("list", user, %{"list" => list.id})
end
end
describe "user streams" do
setup do
user = insert(:user)
@ -35,7 +105,7 @@ defmodule Pleroma.Web.StreamerTest do
assert_receive {:text, _}, @streamer_timeout
end)
Streamer.add_socket(
Streamer.get_topic_and_add_socket(
"user",
%{transport_pid: task.pid, assigns: %{user: user}}
)
@ -50,7 +120,7 @@ defmodule Pleroma.Web.StreamerTest do
assert_receive {:text, _}, @streamer_timeout
end)
Streamer.add_socket(
Streamer.get_topic_and_add_socket(
"user:notification",
%{transport_pid: task.pid, assigns: %{user: user}}
)
@ -70,7 +140,7 @@ defmodule Pleroma.Web.StreamerTest do
task = Task.async(fn -> refute_receive {:text, _}, @streamer_timeout end)
Streamer.add_socket(
Streamer.get_topic_and_add_socket(
"user:notification",
%{transport_pid: task.pid, assigns: %{user: user}}
)
@ -90,7 +160,7 @@ defmodule Pleroma.Web.StreamerTest do
task = Task.async(fn -> refute_receive {:text, _}, @streamer_timeout end)
Streamer.add_socket(
Streamer.get_topic_and_add_socket(
"user:notification",
%{transport_pid: task.pid, assigns: %{user: user}}
)
@ -110,7 +180,7 @@ defmodule Pleroma.Web.StreamerTest do
task = Task.async(fn -> refute_receive {:text, _}, @streamer_timeout end)
Streamer.add_socket(
Streamer.get_topic_and_add_socket(
"user:notification",
%{transport_pid: task.pid, assigns: %{user: user}}
)
@ -127,7 +197,7 @@ defmodule Pleroma.Web.StreamerTest do
Process.sleep(@streamer_start_wait)
Streamer.add_socket(
Streamer.get_topic_and_add_socket(
"user:notification",
%{transport_pid: task.pid, assigns: %{user: user}}
)
@ -415,14 +485,10 @@ defmodule Pleroma.Web.StreamerTest do
assert_receive {:text, _}, 1_000
end)
fake_socket = %StreamerSocket{
transport_pid: task.pid,
user: user_a
}
Streamer.add_socket(
"list:#{list.id}",
fake_socket
Streamer.get_topic_and_add_socket(
"list",
%{transport_pid: task.pid, assigns: %{user: user_a}},
%{"list" => list.id}
)
Worker.handle_call({:stream, "list", activity}, self(), %{})
@ -497,7 +563,7 @@ defmodule Pleroma.Web.StreamerTest do
task = Task.async(fn -> refute_receive {:text, _}, @streamer_timeout end)
Streamer.add_socket(
Streamer.get_topic_and_add_socket(
"user",
%{transport_pid: task.pid, assigns: %{user: user2}}
)
@ -527,7 +593,7 @@ defmodule Pleroma.Web.StreamerTest do
assert last_status["pleroma"]["direct_conversation_id"] == participation.id
end)
Streamer.add_socket(
Streamer.get_topic_and_add_socket(
"direct",
%{transport_pid: task.pid, assigns: %{user: user}}
)
@ -561,7 +627,7 @@ defmodule Pleroma.Web.StreamerTest do
Process.sleep(@streamer_start_wait)
Streamer.add_socket(
Streamer.get_topic_and_add_socket(
"direct",
%{transport_pid: task.pid, assigns: %{user: user}}
)
@ -604,7 +670,7 @@ defmodule Pleroma.Web.StreamerTest do
Process.sleep(@streamer_start_wait)
Streamer.add_socket(
Streamer.get_topic_and_add_socket(
"direct",
%{transport_pid: task.pid, assigns: %{user: user}}
)