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rate limiter: disable based on if remote ip was found, not on if the plug was enabled

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The current rate limiter disable logic won't trigger when the remote ip
is not forwarded, only when the remoteip plug is not enabled, which is
not the case on most instances since it's enabled by default. This
changes the behavior to warn and disable  when the remote ip was not forwarded,
even if the RemoteIP plug is enabled.

Also closes #1620
This commit is contained in:
rinpatch 2020-03-13 21:15:42 +03:00
commit fc4496d4fa
5 changed files with 55 additions and 69 deletions
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84
test/plugs/rate_limiter_test.exs
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@ -3,8 +3,7 @@
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Plugs.RateLimiterTest do
use ExUnit.Case, async: true
use Plug.Test
use Pleroma.Web.ConnCase
alias Pleroma.Config
alias Pleroma.Plugs.RateLimiter
@ -36,63 +35,44 @@ defmodule Pleroma.Plugs.RateLimiterTest do
|> RateLimiter.init()
|> RateLimiter.action_settings()
end
end
test "it is disabled for localhost" do
Config.put([:rate_limit, @limiter_name], {1, 1})
Config.put([Pleroma.Web.Endpoint, :http, :ip], {127, 0, 0, 1})
Config.put([Pleroma.Plugs.RemoteIp, :enabled], false)
test "it is disabled if it remote ip plug is enabled but no remote ip is found" do
Config.put([Pleroma.Web.Endpoint, :http, :ip], {127, 0, 0, 1})
assert RateLimiter.disabled?(Plug.Conn.assign(build_conn(), :remote_ip_found, false))
end
assert RateLimiter.disabled?() == true
end
test "it restricts based on config values" do
limiter_name = :test_plug_opts
scale = 80
limit = 5
test "it is disabled for socket" do
Config.put([:rate_limit, @limiter_name], {1, 1})
Config.put([Pleroma.Web.Endpoint, :http, :ip], {:local, "/path/to/pleroma.sock"})
Config.put([Pleroma.Plugs.RemoteIp, :enabled], false)
Config.put([Pleroma.Web.Endpoint, :http, :ip], {8, 8, 8, 8})
Config.put([:rate_limit, limiter_name], {scale, limit})
assert RateLimiter.disabled?() == true
end
test "it is enabled for socket when remote ip is enabled" do
Config.put([:rate_limit, @limiter_name], {1, 1})
Config.put([Pleroma.Web.Endpoint, :http, :ip], {:local, "/path/to/pleroma.sock"})
Config.put([Pleroma.Plugs.RemoteIp, :enabled], true)
assert RateLimiter.disabled?() == false
end
test "it restricts based on config values" do
limiter_name = :test_plug_opts
scale = 80
limit = 5
Config.put([Pleroma.Web.Endpoint, :http, :ip], {8, 8, 8, 8})
Config.put([:rate_limit, limiter_name], {scale, limit})
plug_opts = RateLimiter.init(name: limiter_name)
conn = conn(:get, "/")
for i <- 1..5 do
conn = RateLimiter.call(conn, plug_opts)
assert {^i, _} = RateLimiter.inspect_bucket(conn, limiter_name, plug_opts)
Process.sleep(10)
end
plug_opts = RateLimiter.init(name: limiter_name)
conn = conn(:get, "/")
for i <- 1..5 do
conn = RateLimiter.call(conn, plug_opts)
assert %{"error" => "Throttled"} = Phoenix.ConnTest.json_response(conn, :too_many_requests)
assert conn.halted
Process.sleep(50)
conn = conn(:get, "/")
conn = RateLimiter.call(conn, plug_opts)
assert {1, 4} = RateLimiter.inspect_bucket(conn, limiter_name, plug_opts)
refute conn.status == Plug.Conn.Status.code(:too_many_requests)
refute conn.resp_body
refute conn.halted
assert {^i, _} = RateLimiter.inspect_bucket(conn, limiter_name, plug_opts)
Process.sleep(10)
end
conn = RateLimiter.call(conn, plug_opts)
assert %{"error" => "Throttled"} = Phoenix.ConnTest.json_response(conn, :too_many_requests)
assert conn.halted
Process.sleep(50)
conn = conn(:get, "/")
conn = RateLimiter.call(conn, plug_opts)
assert {1, 4} = RateLimiter.inspect_bucket(conn, limiter_name, plug_opts)
refute conn.status == Plug.Conn.Status.code(:too_many_requests)
refute conn.resp_body
refute conn.halted
end
describe "options" do