From 889dc17abd95bd1f414646e54d7e3cdadd9afbc9 Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivant.business@gmail.com>
Date: Tue, 16 Jul 2019 19:18:30 +0300
Subject: [PATCH 1/2] [#1094] Rate-limited follow & unfollow actions.

---
 config/config.exs                                       | 2 ++
 docs/config.md                                          | 2 ++
 lib/pleroma/web/mastodon_api/mastodon_api_controller.ex | 8 ++++++++
 3 files changed, 12 insertions(+)

diff --git a/config/config.exs b/config/config.exs
index 7d539f994..03e0341c8 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -528,6 +528,8 @@
 config :pleroma, :rate_limit,
   search: [{1000, 10}, {1000, 30}],
   app_account_creation: {1_800_000, 25},
+  relations_actions: {10_000, 10},
+  relation_id_action: {60_000, 2},
   statuses_actions: {10_000, 15},
   status_id_action: {60_000, 3}
 
diff --git a/docs/config.md b/docs/config.md
index 9a64f0ed7..f595caba5 100644
--- a/docs/config.md
+++ b/docs/config.md
@@ -647,5 +647,7 @@ Supported rate limiters:
 
 * `:search` for the search requests (account & status search etc.)
 * `:app_account_creation` for registering user accounts from the same IP address
+* `:relations_actions` for actions on relations with other users (follow, unfollow)
+* `:relation_id_action` for actions on relation with specific another user (follow, unfollow)
 * `:statuses_actions` for create / delete / fav / unfav / reblog / unreblog actions on any statuses
 * `:status_id_action` for fav / unfav or reblog / unreblog actions on the same status by the same user
diff --git a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
index f4aa576f7..a732a6990 100644
--- a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
+++ b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
@@ -47,6 +47,8 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
 
   require Logger
 
+  @rate_limited_relations_actions ~w(follow unfollow)a
+
   @rate_limited_status_actions ~w(reblog_status unreblog_status fav_status unfav_status
     post_status delete_status)a
 
@@ -62,6 +64,12 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
     when action in ~w(fav_status unfav_status)a
   )
 
+  plug(
+    RateLimiter,
+    {:relations_id_action, params: ["id", "uri"]} when action in @rate_limited_relations_actions
+  )
+
+  plug(RateLimiter, :relations_actions when action in @rate_limited_relations_actions)
   plug(RateLimiter, :statuses_actions when action in @rate_limited_status_actions)
   plug(RateLimiter, :app_account_creation when action == :account_register)
   plug(RateLimiter, :search when action in [:search, :search2, :account_search])

From 2ba07b63f4557554cd4acc63dc8e0424612554a0 Mon Sep 17 00:00:00 2001
From: Ivan Tashkinov <ivantbusiness@gmail.com>
Date: Tue, 16 Jul 2019 16:59:02 +0000
Subject: [PATCH 2/2] Apply suggestion to docs/config.md

---
 docs/config.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/config.md b/docs/config.md
index f595caba5..346b8cda2 100644
--- a/docs/config.md
+++ b/docs/config.md
@@ -647,7 +647,7 @@ Supported rate limiters:
 
 * `:search` for the search requests (account & status search etc.)
 * `:app_account_creation` for registering user accounts from the same IP address
-* `:relations_actions` for actions on relations with other users (follow, unfollow)
-* `:relation_id_action` for actions on relation with specific another user (follow, unfollow)
+* `:relations_actions` for actions on relations with all users (follow, unfollow)
+* `:relation_id_action` for actions on relation with a specific user (follow, unfollow)
 * `:statuses_actions` for create / delete / fav / unfav / reblog / unreblog actions on any statuses
 * `:status_id_action` for fav / unfav or reblog / unreblog actions on the same status by the same user