merge

2021-06-27 22:31:37 +01:00 · 2021-06-27 22:31:37 +01:00 · e56c319e8f
commit e56c319e8f
parent 50a644a221 f9ae7e72e9
265 changed files with 3149 additions and 1492 deletions
--- a/.gitignore
+++ b/.gitignore
@ -29,6 +29,7 @@ erl_crash.dump
 # variables.
 /config/*.secret.exs
 /config/generated_config.exs
+/config/runtime.exs
 /config/*.env


@ -57,4 +58,4 @@ pleroma.iml

 # Editor temp files
 /*~
-/*#
+/*#
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@ -24,6 +24,7 @@ stages:
  - docker

 before_script:
+  - echo $MIX_ENV
  - rm -rf _build/*/lib/pleroma
  - apt-get update && apt-get install -y cmake
  - mix local.hex --force
@ -37,11 +38,20 @@ after_script:

 build:
  stage: build
+  only:
+    changes:
+      - "**/*.ex"
+      - "**/*.exs"
+      - "mix.lock"
  script:
  - mix compile --force

 spec-build:
  stage: test
+  only:
+    changes:
+      - "lib/pleroma/web/api_spec/**/*.ex"
+      - "lib/pleroma/web/api_spec.ex"
  artifacts:
    paths:
    - spec.json
@ -64,6 +74,11 @@ benchmark:

 unit-testing:
  stage: test
+  only:
+    changes:
+      - "**/*.ex"
+      - "**/*.exs"
+      - "mix.lock"
  retry: 2
  cache: &testing_cache_policy
    <<: *global_cache_policy
@ -97,6 +112,11 @@ unit-testing:

 unit-testing-rum:
  stage: test
+  only:
+    changes:
+      - "**/*.ex"
+      - "**/*.exs"
+      - "mix.lock"
  retry: 2
  cache: *testing_cache_policy
  services:
@ -115,16 +135,40 @@ unit-testing-rum:

 lint:
  stage: test
+  only:
+    changes:
+      - "**/*.ex"
+      - "**/*.exs"
+      - "mix.lock"
  cache: *testing_cache_policy
  script:
    - mix format --check-formatted

 analysis:
  stage: test
+  only:
+    changes:
+      - "**/*.ex"
+      - "**/*.exs"
+      - "mix.lock"
  cache: *testing_cache_policy
  script:
    - mix credo --strict --only=warnings,todo,fixme,consistency,readability

+cycles:
+  stage: test
+  image: elixir:1.11
+  only:
+    changes:
+      - "**/*.ex"
+      - "**/*.exs"
+      - "mix.lock"
+  cache: {}
+  script:
+    - mix deps.get
+    - mix compile
+    - mix xref graph --format cycles --label compile | awk '{print $0} END{exit ($0 != "No cycles found")}'
+
 docs-deploy:
  stage: deploy
  cache: *testing_cache_policy
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -8,16 +8,28 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).

 ### Changed

+- **Breaking:** Configuration: `:chat, enabled` moved to `:shout, enabled` and `:instance, chat_limit` moved to `:shout, limit`
+- Support for Erlang/OTP 24
 - The `application` metadata returned with statuses is no longer hardcoded. Apps that want to display these details will now have valid data for new posts after this change.
 - HTTPSecurityPlug now sends a response header to opt out of Google's FLoC (Federated Learning of Cohorts) targeted advertising.
+- Email address is now returned if requesting user is the owner of the user account so it can be exposed in client and FE user settings UIs.
+- Improved Twittercard and OpenGraph meta tag generation including thumbnails and image dimension metadata when available.

 ### Added

 - MRF (`FollowBotPolicy`): New MRF Policy which makes a designated local Bot account attempt to follow all users in public Notes received by your instance. Users who require approving follower requests or have #nobot in their profile are excluded.
 - Return OAuth token `id` (primary key) in POST `/oauth/token`.
+- `AnalyzeMetadata` upload filter for extracting image/video attachment dimensions and generating blurhashes for images. Blurhashes for videos are not generated at this time.
+- Attachment dimensions and blurhashes are federated when available.
+- Pinned posts federation

 ### Fixed
 - Don't crash so hard when email settings are invalid.
+- Checking activated Upload Filters for required commands.
+- Mix task `pleroma.database prune_objects`
+
+### Removed
+- **Breaking**: Remove deprecated `/api/qvitter/statuses/notifications/read` (replaced by `/api/v1/pleroma/notifications/read`)

 ## Unreleased (Patch)

@ -28,6 +40,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Applying ConcurrentLimiter settings via AdminAPI
 - User login failures if their `notification_settings` were in a NULL state.
 - Mix task `pleroma.user delete_activities` query transaction timeout is now :infinity
+- MRF (`SimplePolicy`): Embedded objects are now checked. If any embedded object would be rejected, its parent is rejected. This fixes Announces leaking posts from blocked domains.
 - Fixed some Markdown issues, including trailing slash in links.

 ## [2.3.0] - 2020-03-01
--- a/2
+++ b/2
@ -33,7 +33,7 @@ ARG DATA=/var/lib/pleroma

 RUN echo "http://nl.alpinelinux.org/alpine/latest-stable/community" >> /etc/apk/repositories &&\
 	apk update &&\
-	apk add exiftool imagemagick libmagic ncurses postgresql-client &&\
+	apk add exiftool ffmpeg imagemagick libmagic ncurses postgresql-client &&\
 	adduser --system --shell /bin/false --home ${HOME} pleroma &&\
 	mkdir -p ${DATA}/uploads &&\
 	mkdir -p ${DATA}/static &&\
--- a/README.md
+++ b/README.md
@ -35,6 +35,9 @@ Currently Pleroma is not packaged by any OS/Distros, but if you want to package
 ### Docker
 While we don’t provide docker files, other people have written very good ones. Take a look at <https://github.com/angristan/docker-pleroma> or <https://glitch.sh/sn0w/pleroma-docker>.

+### Raspberry Pi
+Community maintained Raspberry Pi image that you can flash and run Pleroma on your Raspberry Pi. Available here <https://github.com/guysoft/PleromaPi>.
+
 ### Compilation Troubleshooting
 If you ever encounter compilation issues during the updating of Pleroma, you can try these commands and see if they fix things:

@ -50,5 +53,5 @@ If you are not developing Pleroma, it is better to use the OTP release, which co
 - Latest Git revision: <https://docs-develop.pleroma.social>

 ## Community Channels
-* IRC: **#pleroma** and **#pleroma-dev** on freenode, webchat is available at <https://irc.pleroma.social>
-* Matrix: <https://matrix.to/#/#freenode_#pleroma:matrix.org> and <https://matrix.to/#/#freenode_#pleroma-dev:matrix.org>
+* IRC: **#pleroma** and **#pleroma-dev** on libera.chat, webchat is available at <https://irc.pleroma.social>
+* Matrix: [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) and [#pleroma-dev:libera.chat](https://matrix.to/#/#pleroma-dev:libera.chat)
--- a/benchmarks/load_testing/activities.ex
+++ b/benchmarks/load_testing/activities.ex
@ -299,7 +299,7 @@ defmodule Pleroma.LoadTesting.Activities do
      "url" => [
        %{
          "href" =>
-            "#{Pleroma.Web.base_url()}/media/b1b873552422a07bf53af01f3c231c841db4dfc42c35efde681abaf0f2a4eab7.jpg",
+            "#{Pleroma.Web.Endpoint.url()}/media/b1b873552422a07bf53af01f3c231c841db4dfc42c35efde681abaf0f2a4eab7.jpg",
          "mediaType" => "image/jpeg",
          "type" => "Link"
        }
--- a/config/benchmark.exs
+++ b/config/benchmark.exs
@ -1,4 +1,4 @@
-use Mix.Config
+import Config

 # We don't run a server during test. If one is required,
 # you can enable the server option below.
--- a/config/config.exs
+++ b/config/config.exs
@ -41,7 +41,7 @@
 #
 # This configuration file is loaded before any dependency and
 # is restricted to this project.
-use Mix.Config
+import Config

 # General application configuration
 config :pleroma, ecto_repos: [Pleroma.Repo]
@ -190,7 +190,6 @@ config :pleroma, :instance,
  instance_thumbnail: "/instance/thumbnail.jpeg",
  limit: 5_000,
  description_limit: 5_000,
-  chat_limit: 5_000,
  remote_limit: 100_000,
  upload_limit: 16_000_000,
  avatar_upload_limit: 2_000_000,
@ -460,7 +459,9 @@ config :pleroma, :media_preview_proxy,
  image_quality: 85,
  min_content_length: 100 * 1024

-config :pleroma, :chat, enabled: true
+config :pleroma, :shout,
+  enabled: true,
+  limit: 5_000

 config :phoenix, :format_encoders, json: Jason

--- a/config/description.exs
+++ b/config/description.exs
@ -1,4 +1,4 @@
-use Mix.Config
+import Config

 websocket_config = [
  path: "/websocket",
@ -544,14 +544,6 @@ config :pleroma, :config_description, [
          5_000
        ]
      },
-      %{
-        key: :chat_limit,
-        type: :integer,
-        description: "Character limit of the instance chat messages",
-        suggestions: [
-          5_000
-        ]
-      },
      %{
        key: :remote_limit,
        type: :integer,
@ -682,7 +674,8 @@ config :pleroma, :config_description, [
      %{
        key: :allow_relay,
        type: :boolean,
-        description: "Enable Pleroma's Relay, which makes it possible to follow a whole instance"
+        description:
+          "Permits remote instances to subscribe to all public posts of your instance. (Important!) This may increase the visibility of your instance."
      },
      %{
        key: :public,
@ -1182,7 +1175,6 @@ config :pleroma, :config_description, [
            alwaysShowSubjectInput: true,
            background: "/static/aurora_borealis.jpg",
            collapseMessageWithSubject: false,
-            disableChat: false,
            greentext: false,
            hideFilteredStatuses: false,
            hideMutedPosts: false,
@ -1229,12 +1221,6 @@ config :pleroma, :config_description, [
            description:
              "When a message has a subject (aka Content Warning), collapse it by default"
          },
-          %{
-            key: :disableChat,
-            label: "PleromaFE Chat",
-            type: :boolean,
-            description: "Disables PleromaFE Chat component"
-          },
          %{
            key: :greentext,
            label: "Greentext",
@ -2652,13 +2638,22 @@ config :pleroma, :config_description, [
  },
  %{
    group: :pleroma,
-    key: :chat,
+    key: :shout,
    type: :group,
-    description: "Pleroma chat settings",
+    description: "Pleroma shout settings",
    children: [
      %{
        key: :enabled,
-        type: :boolean
+        type: :boolean,
+        description: "Enables the backend Shoutbox chat feature."
+      },
+      %{
+        key: :limit,
+        type: :integer,
+        description: "Shout message character limit.",
+        suggestions: [
+          5_000
+        ]
      }
    ]
  },
--- a/config/dev.exs
+++ b/config/dev.exs
@ -1,4 +1,4 @@
-use Mix.Config
+import Config

 # For development, we disable any cache and enable
 # debugging and code reloading.
@ -54,6 +54,10 @@ config :pleroma, Pleroma.Repo,

 config :pleroma, Pleroma.Web.ApiSpec.CastAndValidate, strict: true

+# Reduce recompilation time
+# https://dashbit.co/blog/speeding-up-re-compilation-of-elixir-projects
+config :phoenix, :plug_init_mode, :runtime
+
 if File.exists?("./config/dev.secret.exs") do
  import_config "dev.secret.exs"
 else
--- a/config/dokku.exs
+++ b/config/dokku.exs
@ -1,4 +1,4 @@
-use Mix.Config
+import Config

 config :pleroma, Pleroma.Web.Endpoint,
  http: [
--- a/config/prod.exs
+++ b/config/prod.exs
@ -1,4 +1,4 @@
-use Mix.Config
+import Config

 # For production, we often load configuration from external
 # sources, such as your system environment. For this reason,
@ -63,7 +63,12 @@ config :logger, :ex_syslogger, level: :info

 # Finally import the config/prod.secret.exs
 # which should be versioned separately.
-import_config "prod.secret.exs"
+if File.exists?("./config/prod.secret.exs") do
+  import_config "prod.secret.exs"
+else
+  "`config/prod.secret.exs` not found. You may want to create one by running `mix pleroma.instance gen`"
+  |> IO.warn([])
+end

 if File.exists?("./config/prod.exported_from_db.secret.exs"),
  do: import_config("prod.exported_from_db.secret.exs")
--- a/config/test.exs
+++ b/config/test.exs
@ -1,4 +1,4 @@
-use Mix.Config
+import Config

 # We don't run a server during test. If one is required,
 # you can enable the server option below.
@ -133,6 +133,10 @@ config :pleroma, :side_effects,
  ap_streamer: Pleroma.Web.ActivityPub.ActivityPubMock,
  logger: Pleroma.LoggerMock

+# Reduce recompilation time
+# https://dashbit.co/blog/speeding-up-re-compilation-of-elixir-projects
+config :phoenix, :plug_init_mode, :runtime
+
 if File.exists?("./config/test.secret.exs") do
  import_config "test.secret.exs"
 else
--- a/docs/configuration/cheatsheet.md
+++ b/docs/configuration/cheatsheet.md
@ -8,9 +8,10 @@ For from source installations Pleroma configuration works by first importing the

 To add configuration to your config file, you can copy it from the base config. The latest version of it can be viewed [here](https://git.pleroma.social/pleroma/pleroma/blob/develop/config/config.exs). You can also use this file if you don't know how an option is supposed to be formatted.

-## :chat
+## :shout

-* `enabled` - Enables the backend chat. Defaults to `true`.
+* `enabled` - Enables the backend Shoutbox chat feature. Defaults to `true`.
+* `limit` - Shout character limit. Defaults to `5_000`

 ## :instance
 * `name`: The instance’s name.
@ -19,7 +20,6 @@ To add configuration to your config file, you can copy it from the base config.
 * `description`: The instance’s description, can be seen in nodeinfo and ``/api/v1/instance``.
 * `limit`: Posts character limit (CW/Subject included in the counter).
 * `description_limit`: The character limit for image descriptions.
-* `chat_limit`: Character limit of the instance chat messages.
 * `remote_limit`: Hard character limit beyond which remote posts will be dropped.
 * `upload_limit`: File size limit of uploads (except for avatar, background, banner).
 * `avatar_upload_limit`: File size limit of user’s profile avatars.
@ -37,7 +37,7 @@ To add configuration to your config file, you can copy it from the base config.
 * `federating`: Enable federation with other instances.
 * `federation_incoming_replies_max_depth`: Max. depth of reply-to activities fetching on incoming federation, to prevent out-of-memory situations while fetching very long threads. If set to `nil`, threads of any depth will be fetched. Lower this value if you experience out-of-memory crashes.
 * `federation_reachability_timeout_days`: Timeout (in days) of each external federation target being unreachable prior to pausing federating to it.
-* `allow_relay`: Enable Pleroma’s Relay, which makes it possible to follow a whole instance.
+* `allow_relay`: Permits remote instances to subscribe to all public posts of your instance. This may increase the visibility of your instance.
 * `public`: Makes the client API in authenticated mode-only except for user-profiles. Useful for disabling the Local Timeline and The Whole Known Network. Note that there is a dependent setting restricting or allowing unauthenticated access to specific resources, see `restrict_unauthenticated` for more details.
 * `quarantined_instances`: List of ActivityPub instances where private (DMs, followers-only) activities will not be send.
 * `allowed_post_formats`: MIME-type list of formats allowed to be posted (transformed into HTML).
--- a/docs/configuration/mrf.md
+++ b/docs/configuration/mrf.md
@ -82,7 +82,7 @@ For example, here is a sample policy module which rewrites all messages to "new
 ```elixir
 defmodule Pleroma.Web.ActivityPub.MRF.RewritePolicy do
  @moduledoc "MRF policy which rewrites all Notes to have 'new message content'."
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  # Catch messages which contain Note objects with actual data to filter.
  # Capture the object as `object`, the message content as `content` and the
--- a/docs/development/API/pleroma_api.md
+++ b/docs/development/API/pleroma_api.md
@ -300,7 +300,7 @@ See [Admin-API](admin_api.md)
 * Note: Behaves exactly the same as `POST /api/v1/upload`.
  Can only accept images - any attempt to upload non-image files will be met with `HTTP 415 Unsupported Media Type`.

-## `/api/v1/pleroma/notification_settings`
+## `/api/pleroma/notification_settings`
 ### Updates user notification settings
 * Method `PUT`
 * Authentication: required
--- a/docs/installation/alpine_linux_en.md
+++ b/docs/installation/alpine_linux_en.md
@ -5,25 +5,7 @@ This guide is a step-by-step installation guide for Alpine Linux. The instructio

 It assumes that you have administrative rights, either as root or a user with [sudo permissions](https://www.linode.com/docs/tools-reference/custom-kernels-distros/install-alpine-linux-on-your-linode/#configuration). If you want to run this guide with root, ignore the `sudo` at the beginning of the lines, unless it calls a user like `sudo -Hu pleroma`; in this case, use `su -l <username> -s $SHELL -c 'command'` instead.

-### Required packages
-
-* `postgresql`
-* `elixir`
-* `erlang`
-* `erlang-parsetools`
-* `erlang-xmerl`
-* `git`
-* `file-dev`
-* Development Tools
-* `cmake`
-
-#### Optional packages used in this guide
-
-* `nginx` (preferred, example configs for other reverse proxies can be found in the repo)
-* `certbot` (or any other ACME client for Let’s Encrypt certificates)
-* `ImageMagick`
-* `ffmpeg`
-* `exiftool`
+{! backend/installation/generic_dependencies.include !}

 ### Prepare the system

@ -117,7 +99,7 @@ cd /opt/pleroma
 sudo -Hu pleroma mix deps.get
 ```

-* Generate the configuration: `sudo -Hu pleroma mix pleroma.instance gen`
+* Generate the configuration: `sudo -Hu pleroma MIX_ENV=prod mix pleroma.instance gen`
  * Answer with `yes` if it asks you to install `rebar3`.
  * This may take some time, because parts of pleroma get compiled first.
  * After that it will ask you a few questions about your instance and generates a configuration file in `config/generated_config.exs`.
@ -240,4 +222,4 @@ sudo -Hu pleroma MIX_ENV=prod mix pleroma.user new <username> <your@emailaddress

 ## Questions

-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
--- a/docs/installation/arch_linux_en.md
+++ b/docs/installation/arch_linux_en.md
@ -92,7 +92,7 @@ cd /opt/pleroma
 sudo -Hu pleroma mix deps.get
 ```

-* Generate the configuration: `sudo -Hu pleroma mix pleroma.instance gen`
+* Generate the configuration: `sudo -Hu pleroma MIX_ENV=prod mix pleroma.instance gen`
  * Answer with `yes` if it asks you to install `rebar3`.
  * This may take some time, because parts of pleroma get compiled first.
  * After that it will ask you a few questions about your instance and generates a configuration file in `config/generated_config.exs`.
@ -215,4 +215,4 @@ sudo -Hu pleroma MIX_ENV=prod mix pleroma.user new <username> <your@emailaddress

 ## Questions

-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
--- a/docs/installation/debian_based_en.md
+++ b/docs/installation/debian_based_en.md
@ -1,27 +1,9 @@
 # Installing on Debian Based Distributions
 ## Installation

-This guide will assume you are on Debian Stretch. This guide should also work with Ubuntu 16.04 and 18.04. It also assumes that you have administrative rights, either as root or a user with [sudo permissions](https://www.digitalocean.com/community/tutorials/how-to-add-delete-and-grant-sudo-privileges-to-users-on-a-debian-vps). If you want to run this guide with root, ignore the `sudo` at the beginning of the lines, unless it calls a user like `sudo -Hu pleroma`; in this case, use `su <username> -s $SHELL -c 'command'` instead.
+This guide will assume you are on Debian 11 (“bullseye”) or later. This guide should also work with Ubuntu 18.04 (“Bionic Beaver”) and later. It also assumes that you have administrative rights, either as root or a user with [sudo permissions](https://www.digitalocean.com/community/tutorials/how-to-add-delete-and-grant-sudo-privileges-to-users-on-a-debian-vps). If you want to run this guide with root, ignore the `sudo` at the beginning of the lines, unless it calls a user like `sudo -Hu pleroma`; in this case, use `su <username> -s $SHELL -c 'command'` instead.

-### Required packages
-
-* `postgresql` (9.6+, Ubuntu 16.04 comes with 9.5, you can get a newer version from [here](https://www.postgresql.org/download/linux/ubuntu/))
-* `postgresql-contrib` (9.6+, same situtation as above)
-* `elixir` (1.8+, Follow the guide to install from the Erlang Solutions repo or use [asdf](https://github.com/asdf-vm/asdf) as the pleroma user)
-* `erlang-dev`
-* `erlang-nox`
-* `libmagic-dev`
-* `git`
-* `build-essential`
-* `cmake`
-
-#### Optional packages used in this guide
-
-* `nginx` (preferred, example configs for other reverse proxies can be found in the repo)
-* `certbot` (or any other ACME client for Let’s Encrypt certificates)
-* `ImageMagick`
-* `ffmpeg`
-* `exiftool`
+{! backend/installation/generic_dependencies.include !}

 ### Prepare the system

@ -40,20 +22,14 @@ sudo apt install git build-essential postgresql postgresql-contrib cmake libmagi

 ### Install Elixir and Erlang

-* Download and add the Erlang repository:
-
-```shell
-wget -P /tmp/ https://packages.erlang-solutions.com/erlang-solutions_2.0_all.deb
-sudo dpkg -i /tmp/erlang-solutions_2.0_all.deb
-```
-
-* Install Elixir and Erlang:
+* Install Elixir and Erlang (you might need to use backports or [asdf](https://github.com/asdf-vm/asdf) on old systems):

 ```shell
 sudo apt update
 sudo apt install elixir erlang-dev erlang-nox
 ```

+
 ### Optional packages: [`docs/installation/optional/media_graphics_packages.md`](../installation/optional/media_graphics_packages.md)

 ```shell
@ -90,7 +66,7 @@ cd /opt/pleroma
 sudo -Hu pleroma mix deps.get
 ```

-* Generate the configuration: `sudo -Hu pleroma mix pleroma.instance gen`
+* Generate the configuration: `sudo -Hu pleroma MIX_ENV=prod mix pleroma.instance gen`
  * Answer with `yes` if it asks you to install `rebar3`.
  * This may take some time, because parts of pleroma get compiled first.
  * After that it will ask you a few questions about your instance and generates a configuration file in `config/generated_config.exs`.
@ -202,4 +178,4 @@ sudo -Hu pleroma MIX_ENV=prod mix pleroma.user new <username> <your@emailaddress

 ## Questions

-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
--- a/docs/installation/debian_based_jp.md
+++ b/docs/installation/debian_based_jp.md
@ -89,7 +89,7 @@ sudo -Hu pleroma mix deps.get

 * コンフィギュレーションを生成します。
 ```
-sudo -Hu pleroma mix pleroma.instance gen
+sudo -Hu pleroma MIX_ENV=prod mix pleroma.instance gen
 ```
    * rebar3をインストールしてもよいか聞かれたら、yesを入力してください。
    * このときにpleromaの一部がコンパイルされるため、この処理には時間がかかります。
@ -103,7 +103,7 @@ sudo -Hu pleroma mv config/{generated_config.exs,prod.secret.exs}

 * 先程のコマンドで、すでに `config/setup_db.psql` というファイルが作られています。このファイルをもとに、データベースを作成します。
 ```
-sudo -Hu pleroma mix pleroma.instance gen
+sudo -Hu pleroma MIX_ENV=prod mix pleroma.instance gen
 ```

 * そして、データベースのマイグレーションを実行します。
@ -191,5 +191,5 @@ sudo -Hu pleroma MIX_ENV=prod mix pleroma.user new <username> <your@emailaddress

 インストールについて質問がある、もしくは、うまくいかないときは、以下のところで質問できます。

-* [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org)
-* **Freenode** の **#pleroma** IRCチャンネル
+* [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat)
+* **libera.chat** の **#pleroma** IRCチャンネル
--- a/docs/installation/freebsd_en.md
+++ b/docs/installation/freebsd_en.md
@ -1,8 +1,10 @@
-# Installing on FreeBSD 
+# Installing on FreeBSD

 This document was written for FreeBSD 12.1, but should be work on future releases.

-## Required software 
+{! backend/installation/generic_dependencies.include !}
+
+## Installing software used in this guide

 This assumes the target system has `pkg(8)`.

@ -54,7 +56,7 @@ Configure Pleroma. Note that you need a domain name at this point:
 ```
 $ cd /home/pleroma/pleroma
 $ mix deps.get # Enter "y" when asked to install Hex
-$ mix pleroma.instance gen # You will be asked a few questions here.
+$ MIX_ENV=prod mix pleroma.instance gen # You will be asked a few questions here.
 $ cp config/generated_config.exs config/prod.secret.exs
 ```

@ -213,4 +215,4 @@ incorrect timestamps. You should have ntpd running.

 ## Questions

-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
--- a/docs/installation/generic_dependencies.include
+++ b/docs/installation/generic_dependencies.include
@ -0,0 +1,16 @@
+## Required dependencies
+
+* PostgreSQL 9.6+
+* Elixir 1.9+
+* Erlang OTP 22.2+
+* git
+* file / libmagic
+* gcc (clang might also work)
+* GNU make
+* CMake
+
+## Optionnal dependencies
+
+* ImageMagick
+* FFmpeg
+* exiftool
--- a/docs/installation/gentoo_en.md
+++ b/docs/installation/gentoo_en.md
@ -3,9 +3,7 @@

 This guide will assume that you have administrative rights, either as root or a user with [sudo permissions](https://wiki.gentoo.org/wiki/Sudo). Lines that begin with `#` indicate that they should be run as the superuser. Lines using `$` should be run as the indicated user, e.g. `pleroma$` should be run as the `pleroma` user.

-### Configuring your hostname (optional)
-
-If you would like your prompt to permanently include your host/domain, change `/etc/conf.d/hostname` to your hostname. You can reboot or use the `hostname` command to make immediate changes.
+{! backend/installation/generic_dependencies.include !}

 ### Your make.conf, package.use, and USE flags

@ -54,7 +52,7 @@ Gentoo quite pointedly does not come with a cron daemon installed, and as such i
 # emerge --ask dev-db/postgresql dev-lang/elixir dev-vcs/git www-servers/nginx app-crypt/certbot app-crypt/certbot-nginx dev-util/cmake sys-apps/file
 ```

-If you would not like to install the optional packages, remove them from this line. 
+If you would not like to install the optional packages, remove them from this line.

 If you're running this from a low-powered virtual machine, it should work though it will take some time. There were no issues on a VPS with a single core and 1GB of RAM; if you are using an even more limited device and run into issues, you can try creating a swapfile or use a more powerful machine running Gentoo to [cross build](https://wiki.gentoo.org/wiki/Cross_build_environment). If you have a wait ahead of you, now would be a good time to take a break, strech a bit, refresh your beverage of choice and/or get a snack, and reply to Arch users' posts with "I use Gentoo btw" as we do.

@ -79,12 +77,12 @@ The output from emerging postgresql should give you a command for initializing t
 ```

 * Start postgres and enable the system service
- 
+
 ```shell
 # /etc/init.d/postgresql-11 start
 # rc-update add postgresql-11 default
 ```
- 
+
 ### A note on licenses, the AGPL, and deployment procedures

 If you do not plan to make any modifications to your Pleroma instance, cloning directly from the main repo will get you what you need. However, if you plan on doing any contributions to upstream development, making changes or modifications to your instance, making custom themes, or want to play around--and let's be honest here, if you're using Gentoo that is most likely you--you will save yourself a lot of headache later if you take the time right now to fork the Pleroma repo and use that in the following section.
@ -135,7 +133,7 @@ pleroma$ mix deps.get
 * Generate the configuration:

 ```shell
-pleroma$ mix pleroma.instance gen
+pleroma$ MIX_ENV=prod mix pleroma.instance gen
 ```

  * Answer with `yes` if it asks you to install `rebar3`.
@ -241,7 +239,7 @@ First, ensure that the command you will be installing into your crontab works.
 # /usr/bin/certbot renew --nginx
 ```

-Assuming not much time has passed since you got certbot working a few steps ago, you should get a message for all domains you installed certificates for saying `Cert not yet due for renewal`. 
+Assuming not much time has passed since you got certbot working a few steps ago, you should get a message for all domains you installed certificates for saying `Cert not yet due for renewal`.

 Now, run crontab as a superuser with `crontab -e` or `sudo crontab -e` as appropriate, and add the following line to your cron:

@ -298,4 +296,4 @@ If you opted to allow sudo for the `pleroma` user but would like to remove the a

 ## Questions

-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
--- a/docs/installation/netbsd_en.md
+++ b/docs/installation/netbsd_en.md
@ -1,6 +1,8 @@
 # Installing on NetBSD

-## Required software 
+{! backend/installation/generic_dependencies.include !}
+
+## Installing software used in this guide

 pkgin should have been installed by the NetBSD installer if you selected
 the right options. If it isn't installed, install it using pkg_add.
@ -71,7 +73,7 @@ Configure Pleroma. Note that you need a domain name at this point:
 ```
 $ cd /home/pleroma/pleroma
 $ mix deps.get
-$ mix pleroma.instance gen # You will be asked a few questions here.
+$ MIX_ENV=prod mix pleroma.instance gen # You will be asked a few questions here.
 ```

 Since Postgres is configured, we can now initialize the database. There should
@ -193,8 +195,6 @@ Run `# /etc/rc.d/pleroma start` to start Pleroma.

 Restart nginx with `# /etc/rc.d/nginx restart` and you should be up and running.

-If you need further help, contact niaa on freenode.
-
 Make sure your time is in sync, or other instances will receive your posts with
 incorrect timestamps. You should have ntpd running.

@ -208,4 +208,4 @@ incorrect timestamps. You should have ntpd running.

 ## Questions

-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
--- a/docs/installation/openbsd_en.md
+++ b/docs/installation/openbsd_en.md
@ -4,19 +4,11 @@ This guide describes the installation and configuration of pleroma (and the requ

 For any additional information regarding commands and configuration files mentioned here, check the man pages [online](https://man.openbsd.org/) or directly on your server with the man command.

+{! backend/installation/generic_dependencies.include !}
+
+### Preparing the system
 #### Required software

-The following packages need to be installed:
-
-  * elixir
-  * gmake
-  * git
-  * postgresql-server
-  * postgresql-contrib
-  * cmake
-  * ffmpeg
-  * ImageMagick
-
 To install them, run the following command (with doas or as root):

 ```
@ -239,7 +231,7 @@ Enter a shell as \_pleroma (as root `su _pleroma -`) and enter pleroma's install
 Then follow the main installation guide:

  * run `mix deps.get`
-  * run `mix pleroma.instance gen` and enter your instance's information when asked
+  * run `MIX_ENV=prod mix pleroma.instance gen` and enter your instance's information when asked
  * copy config/generated\_config.exs to config/prod.secret.exs. The default values should be sufficient but you should edit it and check that everything seems OK.
  * exit your current shell back to a root one and run `psql -U postgres -f /home/_pleroma/pleroma/config/setup_db.psql` to setup the database.
  * return to a \_pleroma shell into pleroma's installation directory (`su _pleroma -;cd ~/pleroma`) and run `MIX_ENV=prod mix ecto.migrate`
@ -264,4 +256,4 @@ LC_ALL=en_US.UTF-8 MIX_ENV=prod mix pleroma.user new <username> <your@emailaddre

 ## Questions

-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC.
--- a/docs/installation/openbsd_fi.md
+++ b/docs/installation/openbsd_fi.md
@ -10,8 +10,8 @@ suositeltavaa tehdä komennon `doas` avulla, katso `doas (1)` ja `doas.conf (5)`
 Tästä eteenpäin oletuksena on, että domain "esimerkki.com" osoittaa
 serverin IP-osoitteeseen.

-Jos asennuksen kanssa on ongelmia, IRC-kanava #pleroma Freenodessa tai
-Matrix-kanava #freenode_#pleroma:matrix.org ovat hyviä paikkoja löytää apua
+Jos asennuksen kanssa on ongelmia, IRC-kanava #pleroma Libera.chat tai
+Matrix-kanava #pleroma:libera.chat ovat hyviä paikkoja löytää apua
 (englanniksi), `/msg eal kukkuu` jos haluat välttämättä puhua härmää.

 Asenna tarvittava ohjelmisto:
--- a/docs/installation/otp_en.md
+++ b/docs/installation/otp_en.md
@ -31,7 +31,7 @@ Other than things bundled in the OTP release Pleroma depends on:

 === "Alpine"
    ```
-    echo "http://nl.alpinelinux.org/alpine/latest-stable/community" >> /etc/apk/repositories
+    awk 'NR==2' /etc/apk/repositories | sed 's/main/community/' | tee -a /etc/apk/repositories
    apk update
    apk add curl unzip ncurses postgresql postgresql-contrib nginx certbot file-dev
    ```
@ -50,7 +50,6 @@ Per [`docs/installation/optional/media_graphics_packages.md`](optional/media_gra

 === "Alpine"
    ```
-    echo "http://nl.alpinelinux.org/alpine/latest-stable/community" >> /etc/apk/repositories
    apk update
    apk add imagemagick ffmpeg exiftool
    ```
@ -232,7 +231,7 @@ At this point if you open your (sub)domain in a browser you should see a 502 err

 If everything worked, you should see Pleroma-FE when visiting your domain. If that didn't happen, try reviewing the installation steps, starting Pleroma in the foreground and seeing if there are any errrors.

-Still doesn't work? Feel free to contact us on [#pleroma on freenode](https://irc.pleroma.social) or via matrix at <https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org>, you can also [file an issue on our Gitlab](https://git.pleroma.social/pleroma/pleroma-support/issues/new)
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC, you can also [file an issue on our Gitlab](https://git.pleroma.social/pleroma/pleroma-support/issues/new).

 ## Post installation

@ -301,4 +300,4 @@ This will create an account withe the username of 'joeuser' with the email addre

 ## Questions

-Questions about the installation or didn’t it work as it should be, ask in [#pleroma:matrix.org](https://matrix.heldscal.la/#/room/#freenode_#pleroma:matrix.org) or IRC Channel **#pleroma** on **Freenode**.
+Questions about the installation or didn’t it work as it should be, ask in [#pleroma:libera.chat](https://matrix.to/#/#pleroma:libera.chat) via Matrix or **#pleroma** on **libera.chat** via IRC, you can also [file an issue on our Gitlab](https://git.pleroma.social/pleroma/pleroma-support/issues/new).
--- a/lib/mix/tasks/pleroma/database.ex
+++ b/lib/mix/tasks/pleroma/database.ex
@ -96,6 +96,15 @@ defmodule Mix.Tasks.Pleroma.Database do
    )
    |> Repo.delete_all(timeout: :infinity)

+    prune_hashtags_query = """
+    DELETE FROM hashtags AS ht
+    WHERE NOT EXISTS (
+      SELECT 1 FROM hashtags_objects hto
+      WHERE ht.id = hto.hashtag_id)
+    """
+
+    Repo.query(prune_hashtags_query)
+
    if Keyword.get(options, :vacuum) do
      Maintenance.vacuum("full")
    end
--- a/lib/pleroma/activity/html.ex
+++ b/lib/pleroma/activity/html.ex
@ -0,0 +1,45 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Activity.HTML do
+  alias Pleroma.HTML
+  alias Pleroma.Object
+
+  @cachex Pleroma.Config.get([:cachex, :provider], Cachex)
+
+  def get_cached_scrubbed_html_for_activity(
+        content,
+        scrubbers,
+        activity,
+        key \\ "",
+        callback \\ fn x -> x end
+      ) do
+    key = "#{key}#{generate_scrubber_signature(scrubbers)}|#{activity.id}"
+
+    @cachex.fetch!(:scrubber_cache, key, fn _key ->
+      object = Object.normalize(activity, fetch: false)
+      HTML.ensure_scrubbed_html(content, scrubbers, object.data["fake"] || false, callback)
+    end)
+  end
+
+  def get_cached_stripped_html_for_activity(content, activity, key) do
+    get_cached_scrubbed_html_for_activity(
+      content,
+      FastSanitize.Sanitizer.StripTags,
+      activity,
+      key,
+      &HtmlEntities.decode/1
+    )
+  end
+
+  defp generate_scrubber_signature(scrubber) when is_atom(scrubber) do
+    generate_scrubber_signature([scrubber])
+  end
+
+  defp generate_scrubber_signature(scrubbers) do
+    Enum.reduce(scrubbers, "", fn scrubber, signature ->
+      "#{signature}#{to_string(scrubber)}"
+    end)
+  end
+end
--- a/lib/pleroma/application.ex
+++ b/lib/pleroma/application.ex
@ -25,7 +25,7 @@ defmodule Pleroma.Application do
    if Process.whereis(Pleroma.Web.Endpoint) do
      case Config.get([:http, :user_agent], :default) do
        :default ->
-          info = "#{Pleroma.Web.base_url()} <#{Config.get([:instance, :email], "")}>"
+          info = "#{Pleroma.Web.Endpoint.url()} <#{Config.get([:instance, :email], "")}>"
          named_version() <> "; " <> info

        custom ->
@ -102,7 +102,7 @@ defmodule Pleroma.Application do
        ] ++
        task_children(@mix_env) ++
        dont_run_in_test(@mix_env) ++
-        chat_child(chat_enabled?()) ++
+        shout_child(shout_enabled?()) ++
        [Pleroma.Gopher.Server]

    # See http://elixir-lang.org/docs/stable/elixir/Supervisor.html
@ -216,7 +216,7 @@ defmodule Pleroma.Application do
      type: :worker
    }

-  defp chat_enabled?, do: Config.get([:chat, :enabled])
+  defp shout_enabled?, do: Config.get([:shout, :enabled])

  defp dont_run_in_test(env) when env in [:test, :benchmark], do: []

@ -237,14 +237,14 @@ defmodule Pleroma.Application do
    ]
  end

-  defp chat_child(true) do
+  defp shout_child(true) do
    [
-      Pleroma.Web.ChatChannel.ChatChannelState,
+      Pleroma.Web.ShoutChannel.ShoutChannelState,
      {Phoenix.PubSub, [name: Pleroma.PubSub, adapter: Phoenix.PubSub.PG2]}
    ]
  end

-  defp chat_child(_), do: []
+  defp shout_child(_), do: []

  defp task_children(:test) do
    [
--- a/lib/pleroma/application_requirements.ex
+++ b/lib/pleroma/application_requirements.ex
@ -164,9 +164,12 @@ defmodule Pleroma.ApplicationRequirements do

  defp check_system_commands!(:ok) do
    filter_commands_statuses = [
-      check_filter(Pleroma.Upload.Filters.Exiftool, "exiftool"),
-      check_filter(Pleroma.Upload.Filters.Mogrify, "mogrify"),
-      check_filter(Pleroma.Upload.Filters.Mogrifun, "mogrify")
+      check_filter(Pleroma.Upload.Filter.Exiftool, "exiftool"),
+      check_filter(Pleroma.Upload.Filter.Mogrify, "mogrify"),
+      check_filter(Pleroma.Upload.Filter.Mogrifun, "mogrify"),
+      check_filter(Pleroma.Upload.Filter.AnalyzeMetadata, "mogrify"),
+      check_filter(Pleroma.Upload.Filter.AnalyzeMetadata, "convert"),
+      check_filter(Pleroma.Upload.Filter.AnalyzeMetadata, "ffprobe")
    ]

    preview_proxy_commands_status =
--- a/lib/pleroma/config/deprecation_warnings.ex
+++ b/lib/pleroma/config/deprecation_warnings.ex
@ -41,7 +41,8 @@ defmodule Pleroma.Config.DeprecationWarnings do
         :ok <- check_gun_pool_options(),
         :ok <- check_activity_expiration_config(),
         :ok <- check_remote_ip_plug_name(),
-         :ok <- check_uploders_s3_public_endpoint() do
+         :ok <- check_uploders_s3_public_endpoint(),
+         :ok <- check_old_chat_shoutbox() do
      :ok
    else
      _ ->
@ -215,4 +216,27 @@ defmodule Pleroma.Config.DeprecationWarnings do
      :ok
    end
  end
+
+  @spec check_old_chat_shoutbox() :: :ok | nil
+  def check_old_chat_shoutbox do
+    instance_config = Pleroma.Config.get([:instance])
+    chat_config = Pleroma.Config.get([:chat]) || []
+
+    use_old_config =
+      Keyword.has_key?(instance_config, :chat_limit) or
+        Keyword.has_key?(chat_config, :enabled)
+
+    if use_old_config do
+      Logger.error("""
+      !!!DEPRECATION WARNING!!!
+      Your config is using the old namespace for the Shoutbox configuration. You need to convert to the new namespace. e.g.,
+      \n* `config :pleroma, :chat, enabled` and `config :pleroma, :instance, chat_limit` are now equal to:
+      \n* `config :pleroma, :shout, enabled` and `config :pleroma, :shout, limit`
+      """)
+
+      :error
+    else
+      :ok
+    end
+  end
 end
--- a/lib/pleroma/config/loader.ex
+++ b/lib/pleroma/config/loader.ex
@ -3,9 +3,11 @@
 # SPDX-License-Identifier: AGPL-3.0-only

 defmodule Pleroma.Config.Loader do
+  # These modules are only being used as keys here (for equality check),
+  # so it's okay to use `Module.concat/1` to have the compiler ignore them.
  @reject_keys [
-    Pleroma.Repo,
-    Pleroma.Web.Endpoint,
+    Module.concat(["Pleroma.Repo"]),
+    Module.concat(["Pleroma.Web.Endpoint"]),
    :env,
    :configurable_from_database,
    :database,
--- a/lib/pleroma/config/transfer_task.ex
+++ b/lib/pleroma/config/transfer_task.ex
@ -13,23 +13,25 @@ defmodule Pleroma.Config.TransferTask do

  @type env() :: :test | :benchmark | :dev | :prod

-  @reboot_time_keys [
-    {:pleroma, :hackney_pools},
-    {:pleroma, :chat},
-    {:pleroma, Oban},
-    {:pleroma, :rate_limit},
-    {:pleroma, :markup},
-    {:pleroma, :streamer},
-    {:pleroma, :pools},
-    {:pleroma, :connections_pool}
-  ]
+  defp reboot_time_keys,
+    do: [
+      {:pleroma, :hackney_pools},
+      {:pleroma, :shout},
+      {:pleroma, Oban},
+      {:pleroma, :rate_limit},
+      {:pleroma, :markup},
+      {:pleroma, :streamer},
+      {:pleroma, :pools},
+      {:pleroma, :connections_pool}
+    ]

-  @reboot_time_subkeys [
-    {:pleroma, Pleroma.Captcha, [:seconds_valid]},
-    {:pleroma, Pleroma.Upload, [:proxy_remote]},
-    {:pleroma, :instance, [:upload_limit]},
-    {:pleroma, :gopher, [:enabled]}
-  ]
+  defp reboot_time_subkeys,
+    do: [
+      {:pleroma, Pleroma.Captcha, [:seconds_valid]},
+      {:pleroma, Pleroma.Upload, [:proxy_remote]},
+      {:pleroma, :instance, [:upload_limit]},
+      {:pleroma, :gopher, [:enabled]}
+    ]

  def start_link(restart_pleroma? \\ true) do
    load_and_update_env([], restart_pleroma?)
@ -165,12 +167,12 @@ defmodule Pleroma.Config.TransferTask do
  end

  defp group_and_key_need_reboot?(group, key) do
-    Enum.any?(@reboot_time_keys, fn {g, k} -> g == group and k == key end)
+    Enum.any?(reboot_time_keys(), fn {g, k} -> g == group and k == key end)
  end

  defp group_and_subkey_need_reboot?(group, key, value) do
    Keyword.keyword?(value) and
-      Enum.any?(@reboot_time_subkeys, fn {g, k, subkeys} ->
+      Enum.any?(reboot_time_subkeys(), fn {g, k, subkeys} ->
        g == group and k == key and
          Enum.any?(Keyword.keys(value), &(&1 in subkeys))
      end)
--- a/lib/pleroma/constants.ex
+++ b/lib/pleroma/constants.ex
@ -27,6 +27,4 @@ defmodule Pleroma.Constants do
    do:
      ~w(index.html robots.txt static static-fe finmoji emoji packs sounds images instance sw.js sw-pleroma.js favicon.png schemas doc embed.js embed.css)
  )
-
-  def as_local_public, do: Pleroma.Web.base_url() <> "/#Public"
 end
--- a/lib/pleroma/ecto_type/activity_pub/object_validators/recipients.ex
+++ b/lib/pleroma/ecto_type/activity_pub/object_validators/recipients.ex
@ -13,21 +13,33 @@ defmodule Pleroma.EctoType.ActivityPub.ObjectValidators.Recipients do
    cast([object])
  end

-  def cast(data) when is_list(data) do
-    data
-    |> Enum.reduce_while({:ok, []}, fn element, {:ok, list} ->
-      case ObjectID.cast(element) do
-        {:ok, id} ->
-          {:cont, {:ok, [id | list]}}
-
-        _ ->
-          {:halt, :error}
-      end
-    end)
+  def cast(object) when is_map(object) do
+    case ObjectID.cast(object) do
+      {:ok, data} -> {:ok, [data]}
+      _ -> :error
+    end
  end

-  def cast(_) do
-    :error
+  def cast(data) when is_list(data) do
+    data =
+      data
+      |> Enum.reduce_while([], fn element, list ->
+        case ObjectID.cast(element) do
+          {:ok, id} ->
+            {:cont, [id | list]}
+
+          _ ->
+            {:cont, list}
+        end
+      end)
+      |> Enum.sort()
+      |> Enum.uniq()
+
+    {:ok, data}
+  end
+
+  def cast(data) do
+    {:error, data}
  end

  def dump(data) do
--- a/lib/pleroma/emails/admin_email.ex
+++ b/lib/pleroma/emails/admin_email.ex
@ -73,7 +73,7 @@ defmodule Pleroma.Emails.AdminEmail do
    #{comment_html}
    #{statuses_html}
    <p>
-    <a href="#{Pleroma.Web.base_url()}/pleroma/admin/#/reports/index">View Reports in AdminFE</a>
+    <a href="#{Pleroma.Web.Endpoint.url()}/pleroma/admin/#/reports/index">View Reports in AdminFE</a>
    """

    new()
@ -87,7 +87,7 @@ defmodule Pleroma.Emails.AdminEmail do
    html_body = """
    <p>New account for review: <a href="#{account.ap_id}">@#{account.nickname}</a></p>
    <blockquote>#{HTML.strip_tags(account.registration_reason)}</blockquote>
-    <a href="#{Pleroma.Web.base_url()}/pleroma/admin/#/users/#{account.id}/">Visit AdminFE</a>
+    <a href="#{Pleroma.Web.Endpoint.url()}/pleroma/admin/#/users/#{account.id}/">Visit AdminFE</a>
    """

    new()
--- a/lib/pleroma/emails/user_email.ex
+++ b/lib/pleroma/emails/user_email.ex
@ -5,15 +5,22 @@
 defmodule Pleroma.Emails.UserEmail do
  @moduledoc "User emails"

-  use Phoenix.Swoosh, view: Pleroma.Web.EmailView, layout: {Pleroma.Web.LayoutView, :email}
-
  alias Pleroma.Config
  alias Pleroma.User
  alias Pleroma.Web.Endpoint
  alias Pleroma.Web.Router

+  import Swoosh.Email
+  import Phoenix.Swoosh, except: [render_body: 3]
  import Pleroma.Config.Helpers, only: [instance_name: 0, sender: 0]

+  def render_body(email, template, assigns \\ %{}) do
+    email
+    |> put_new_layout({Pleroma.Web.LayoutView, :email})
+    |> put_new_view(Pleroma.Web.EmailView)
+    |> Phoenix.Swoosh.render_body(template, assigns)
+  end
+
  defp recipient(email, nil), do: email
  defp recipient(email, name), do: {name, email}
  defp recipient(%User{} = user), do: recipient(user.email, user.name)
--- a/lib/pleroma/emoji/formatter.ex
+++ b/lib/pleroma/emoji/formatter.ex
@ -5,7 +5,7 @@
 defmodule Pleroma.Emoji.Formatter do
  alias Pleroma.Emoji
  alias Pleroma.HTML
-  alias Pleroma.Web
+  alias Pleroma.Web.Endpoint
  alias Pleroma.Web.MediaProxy

  def emojify(text) do
@ -44,7 +44,7 @@ defmodule Pleroma.Emoji.Formatter do
    Emoji.get_all()
    |> Enum.filter(fn {emoji, %Emoji{}} -> String.contains?(text, ":#{emoji}:") end)
    |> Enum.reduce(%{}, fn {name, %Emoji{file: file}}, acc ->
-      Map.put(acc, name, to_string(URI.merge(Web.base_url(), file)))
+      Map.put(acc, name, to_string(URI.merge(Endpoint.url(), file)))
    end)
  end

--- a/lib/pleroma/formatter.ex
+++ b/lib/pleroma/formatter.ex
@ -62,7 +62,7 @@ defmodule Pleroma.Formatter do

  def hashtag_handler("#" <> tag = tag_text, _buffer, _opts, acc) do
    tag = String.downcase(tag)
-    url = "#{Pleroma.Web.base_url()}/tag/#{tag}"
+    url = "#{Pleroma.Web.Endpoint.url()}/tag/#{tag}"

    link =
      Phoenix.HTML.Tag.content_tag(:a, tag_text,
--- a/lib/pleroma/gun.ex
+++ b/lib/pleroma/gun.ex
@ -11,9 +11,7 @@ defmodule Pleroma.Gun do
  @callback await(pid(), reference()) :: {:response, :fin, 200, []}
  @callback set_owner(pid(), pid()) :: :ok

-  @api Pleroma.Config.get([Pleroma.Gun], Pleroma.Gun.API)
-
-  defp api, do: @api
+  defp api, do: Pleroma.Config.get([Pleroma.Gun], Pleroma.Gun.API)

  def open(host, port, opts), do: api().open(host, port, opts)

--- a/lib/pleroma/gun/connection_pool/reclaimer.ex
+++ b/lib/pleroma/gun/connection_pool/reclaimer.ex
@ -5,11 +5,11 @@
 defmodule Pleroma.Gun.ConnectionPool.Reclaimer do
  use GenServer, restart: :temporary

-  @registry Pleroma.Gun.ConnectionPool
+  defp registry, do: Pleroma.Gun.ConnectionPool

  def start_monitor do
    pid =
-      case :gen_server.start(__MODULE__, [], name: {:via, Registry, {@registry, "reclaimer"}}) do
+      case :gen_server.start(__MODULE__, [], name: {:via, Registry, {registry(), "reclaimer"}}) do
        {:ok, pid} ->
          pid

@ -46,7 +46,7 @@ defmodule Pleroma.Gun.ConnectionPool.Reclaimer do
    #   {worker_pid, crf, last_reference} end)
    unused_conns =
      Registry.select(
-        @registry,
+        registry(),
        [
          {{:_, :"$1", {:_, :"$2", :"$3", :"$4"}}, [{:==, :"$2", []}], [{{:"$1", :"$3", :"$4"}}]}
        ]
--- a/lib/pleroma/gun/connection_pool/worker.ex
+++ b/lib/pleroma/gun/connection_pool/worker.ex
@ -6,10 +6,10 @@ defmodule Pleroma.Gun.ConnectionPool.Worker do
  alias Pleroma.Gun
  use GenServer, restart: :temporary

-  @registry Pleroma.Gun.ConnectionPool
+  defp registry, do: Pleroma.Gun.ConnectionPool

  def start_link([key | _] = opts) do
-    GenServer.start_link(__MODULE__, opts, name: {:via, Registry, {@registry, key}})
+    GenServer.start_link(__MODULE__, opts, name: {:via, Registry, {registry(), key}})
  end

  @impl true
@ -24,7 +24,7 @@ defmodule Pleroma.Gun.ConnectionPool.Worker do
      time = :erlang.monotonic_time(:millisecond)

      {_, _} =
-        Registry.update_value(@registry, key, fn _ ->
+        Registry.update_value(registry(), key, fn _ ->
          {conn_pid, [client_pid], 1, time}
        end)

@ -65,7 +65,7 @@ defmodule Pleroma.Gun.ConnectionPool.Worker do
    time = :erlang.monotonic_time(:millisecond)

    {{conn_pid, used_by, _, _}, _} =
-      Registry.update_value(@registry, key, fn {conn_pid, used_by, crf, last_reference} ->
+      Registry.update_value(registry(), key, fn {conn_pid, used_by, crf, last_reference} ->
        {conn_pid, [client_pid | used_by], crf(time - last_reference, crf), time}
      end)

@ -92,7 +92,7 @@ defmodule Pleroma.Gun.ConnectionPool.Worker do
  @impl true
  def handle_call(:remove_client, {client_pid, _}, %{key: key} = state) do
    {{_conn_pid, used_by, _crf, _last_reference}, _} =
-      Registry.update_value(@registry, key, fn {conn_pid, used_by, crf, last_reference} ->
+      Registry.update_value(registry(), key, fn {conn_pid, used_by, crf, last_reference} ->
        {conn_pid, List.delete(used_by, client_pid), crf, last_reference}
      end)

--- a/lib/pleroma/html.ex
+++ b/lib/pleroma/html.ex
@ -49,31 +49,6 @@ defmodule Pleroma.HTML do
  def filter_tags(html), do: filter_tags(html, nil)
  def strip_tags(html), do: filter_tags(html, FastSanitize.Sanitizer.StripTags)

-  def get_cached_scrubbed_html_for_activity(
-        content,
-        scrubbers,
-        activity,
-        key \\ "",
-        callback \\ fn x -> x end
-      ) do
-    key = "#{key}#{generate_scrubber_signature(scrubbers)}|#{activity.id}"
-
-    @cachex.fetch!(:scrubber_cache, key, fn _key ->
-      object = Pleroma.Object.normalize(activity, fetch: false)
-      ensure_scrubbed_html(content, scrubbers, object.data["fake"] || false, callback)
-    end)
-  end
-
-  def get_cached_stripped_html_for_activity(content, activity, key) do
-    get_cached_scrubbed_html_for_activity(
-      content,
-      FastSanitize.Sanitizer.StripTags,
-      activity,
-      key,
-      &HtmlEntities.decode/1
-    )
-  end
-
  def ensure_scrubbed_html(
        content,
        scrubbers,
@ -92,16 +67,6 @@ defmodule Pleroma.HTML do
    end
  end

-  defp generate_scrubber_signature(scrubber) when is_atom(scrubber) do
-    generate_scrubber_signature([scrubber])
-  end
-
-  defp generate_scrubber_signature(scrubbers) do
-    Enum.reduce(scrubbers, "", fn scrubber, signature ->
-      "#{signature}#{to_string(scrubber)}"
-    end)
-  end
-
  def extract_first_external_url_from_object(%{data: %{"content" => content}} = object)
      when is_binary(content) do
    unless object.data["fake"] do
--- a/lib/pleroma/http/adapter_helper/gun.ex
+++ b/lib/pleroma/http/adapter_helper/gun.ex
@ -54,8 +54,8 @@ defmodule Pleroma.HTTP.AdapterHelper.Gun do
    Config.get([:pools, pool, :recv_timeout], default)
  end

-  @prefix Pleroma.Gun.ConnectionPool
  def limiter_setup do
+    prefix = Pleroma.Gun.ConnectionPool
    wait = Config.get([:connections_pool, :connection_acquisition_wait])
    retries = Config.get([:connections_pool, :connection_acquisition_retries])

@ -66,7 +66,7 @@ defmodule Pleroma.HTTP.AdapterHelper.Gun do
      max_waiting = Keyword.get(opts, :max_waiting, 10)

      result =
-        ConcurrentLimiter.new(:"#{@prefix}.#{name}", max_running, max_waiting,
+        ConcurrentLimiter.new(:"#{prefix}.#{name}", max_running, max_waiting,
          wait: wait,
          max_retries: retries
        )
--- a/lib/pleroma/http/web_push.ex
+++ b/lib/pleroma/http/web_push.ex
@ -5,8 +5,8 @@
 defmodule Pleroma.HTTP.WebPush do
  @moduledoc false

-  def post(url, payload, headers) do
+  def post(url, payload, headers, options \\ []) do
    list_headers = Map.to_list(headers)
-    Pleroma.HTTP.post(url, payload, list_headers)
+    Pleroma.HTTP.post(url, payload, list_headers, options)
  end
 end
--- a/lib/pleroma/instances.ex
+++ b/lib/pleroma/instances.ex
@ -5,13 +5,18 @@
 defmodule Pleroma.Instances do
  @moduledoc "Instances context."

-  @adapter Pleroma.Instances.Instance
+  alias Pleroma.Instances.Instance

-  defdelegate filter_reachable(urls_or_hosts), to: @adapter
-  defdelegate reachable?(url_or_host), to: @adapter
-  defdelegate set_reachable(url_or_host), to: @adapter
-  defdelegate set_unreachable(url_or_host, unreachable_since \\ nil), to: @adapter
-  defdelegate get_consistently_unreachable(), to: @adapter
+  def filter_reachable(urls_or_hosts), do: Instance.filter_reachable(urls_or_hosts)
+
+  def reachable?(url_or_host), do: Instance.reachable?(url_or_host)
+
+  def set_reachable(url_or_host), do: Instance.set_reachable(url_or_host)
+
+  def set_unreachable(url_or_host, unreachable_since \\ nil),
+    do: Instance.set_unreachable(url_or_host, unreachable_since)
+
+  def get_consistently_unreachable, do: Instance.get_consistently_unreachable()

  def set_consistently_unreachable(url_or_host),
    do: set_unreachable(url_or_host, reachability_datetime_threshold())
--- a/lib/pleroma/maps.ex
+++ b/lib/pleroma/maps.ex
@ -12,4 +12,10 @@ defmodule Pleroma.Maps do
      _ -> map
    end
  end
+
+  def safe_put_in(data, keys, value) when is_map(data) and is_list(keys) do
+    Kernel.put_in(data, keys, value)
+  rescue
+    _ -> data
+  end
 end
--- a/lib/pleroma/object.ex
+++ b/lib/pleroma/object.ex
@ -366,7 +366,7 @@ defmodule Pleroma.Object do
  end

  def local?(%Object{data: %{"id" => id}}) do
-    String.starts_with?(id, Pleroma.Web.base_url() <> "/")
+    String.starts_with?(id, Pleroma.Web.Endpoint.url() <> "/")
  end

  def replies(object, opts \\ []) do
--- a/lib/pleroma/object/fetcher.ex
+++ b/lib/pleroma/object/fetcher.ex
@ -4,6 +4,7 @@

 defmodule Pleroma.Object.Fetcher do
  alias Pleroma.HTTP
+  alias Pleroma.Maps
  alias Pleroma.Object
  alias Pleroma.Object.Containment
  alias Pleroma.Repo
@ -101,6 +102,9 @@ defmodule Pleroma.Object.Fetcher do
      {:transmogrifier, {:error, {:reject, e}}} ->
        {:reject, e}

+      {:transmogrifier, {:reject, e}} ->
+        {:reject, e}
+
      {:transmogrifier, _} = e ->
        {:error, e}

@ -124,12 +128,14 @@ defmodule Pleroma.Object.Fetcher do
  defp prepare_activity_params(data) do
    %{
      "type" => "Create",
-      "to" => data["to"] || [],
-      "cc" => data["cc"] || [],
      # Should we seriously keep this attributedTo thing?
      "actor" => data["actor"] || data["attributedTo"],
      "object" => data
    }
+    |> Maps.put_if_present("to", data["to"])
+    |> Maps.put_if_present("cc", data["cc"])
+    |> Maps.put_if_present("bto", data["bto"])
+    |> Maps.put_if_present("bcc", data["bcc"])
  end

  def fetch_object_from_id!(id, options \\ []) do
--- a/lib/pleroma/reverse_proxy.ex
+++ b/lib/pleroma/reverse_proxy.ex
@ -411,7 +411,7 @@ defmodule Pleroma.ReverseProxy do
    {:ok, :no_duration_limit, :no_duration_limit}
  end

-  defp client, do: Pleroma.ReverseProxy.Client
+  defp client, do: Pleroma.ReverseProxy.Client.Wrapper

  defp track_failed_url(url, error, opts) do
    ttl =
--- a/lib/pleroma/reverse_proxy/client.ex
+++ b/lib/pleroma/reverse_proxy/client.ex
@ -17,22 +17,4 @@ defmodule Pleroma.ReverseProxy.Client do
  @callback stream_body(map()) :: {:ok, binary(), map()} | :done | {:error, atom() | String.t()}

  @callback close(reference() | pid() | map()) :: :ok
-
-  def request(method, url, headers, body \\ "", opts \\ []) do
-    client().request(method, url, headers, body, opts)
-  end
-
-  def stream_body(ref), do: client().stream_body(ref)
-
-  def close(ref), do: client().close(ref)
-
-  defp client do
-    :tesla
-    |> Application.get_env(:adapter)
-    |> client()
-  end
-
-  defp client(Tesla.Adapter.Hackney), do: Pleroma.ReverseProxy.Client.Hackney
-  defp client(Tesla.Adapter.Gun), do: Pleroma.ReverseProxy.Client.Tesla
-  defp client(_), do: Pleroma.Config.get!(Pleroma.ReverseProxy.Client)
 end
--- a/lib/pleroma/reverse_proxy/client/wrapper.ex
+++ b/lib/pleroma/reverse_proxy/client/wrapper.ex
@ -0,0 +1,29 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.ReverseProxy.Client.Wrapper do
+  @moduledoc "Meta-client that calls the appropriate client from the config."
+  @behaviour Pleroma.ReverseProxy.Client
+
+  @impl true
+  def request(method, url, headers, body \\ "", opts \\ []) do
+    client().request(method, url, headers, body, opts)
+  end
+
+  @impl true
+  def stream_body(ref), do: client().stream_body(ref)
+
+  @impl true
+  def close(ref), do: client().close(ref)
+
+  defp client do
+    :tesla
+    |> Application.get_env(:adapter)
+    |> client()
+  end
+
+  defp client(Tesla.Adapter.Hackney), do: Pleroma.ReverseProxy.Client.Hackney
+  defp client(Tesla.Adapter.Gun), do: Pleroma.ReverseProxy.Client.Tesla
+  defp client(_), do: Pleroma.Config.get!(Pleroma.ReverseProxy.Client)
+end
--- a/lib/pleroma/tests/auth_test_controller.ex
+++ b/lib/pleroma/tests/auth_test_controller.ex
@ -9,7 +9,6 @@ defmodule Pleroma.Tests.AuthTestController do
  use Pleroma.Web, :controller

  alias Pleroma.User
-  alias Pleroma.Web.Plugs.EnsurePublicOrAuthenticatedPlug
  alias Pleroma.Web.Plugs.OAuthScopesPlug

  # Serves only with proper OAuth token (:api and :authenticated_api)
@ -47,10 +46,7 @@ defmodule Pleroma.Tests.AuthTestController do
  # Via :authenticated_api, serves if token is present and has requested scopes
  #
  # Suggested use: as :fallback_oauth_check but open with nil :user for :api on private instances
-  plug(
-    :skip_plug,
-    EnsurePublicOrAuthenticatedPlug when action == :fallback_oauth_skip_publicity_check
-  )
+  plug(:skip_public_check when action == :fallback_oauth_skip_publicity_check)

  plug(
    OAuthScopesPlug,
@ -62,11 +58,7 @@ defmodule Pleroma.Tests.AuthTestController do
  # Via :authenticated_api, serves if :user is set (regardless of token presence and its scopes)
  #
  # Suggested use: making an :api endpoint always accessible (e.g. email confirmation endpoint)
-  plug(
-    :skip_plug,
-    [OAuthScopesPlug, EnsurePublicOrAuthenticatedPlug]
-    when action == :skip_oauth_skip_publicity_check
-  )
+  plug(:skip_auth when action == :skip_oauth_skip_publicity_check)

  # Via :authenticated_api, always fails with 403 (endpoint is insecure)
  # Via :api, drops :user if present and serves if public (private instance rejects on no user)
--- a/lib/pleroma/upload.ex
+++ b/lib/pleroma/upload.ex
@ -23,6 +23,9 @@ defmodule Pleroma.Upload do
    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.
+  * `:width` - width of the media in pixels
+  * `:height` - height of the media in pixels
+  * `:blurhash` - string hash of the image encoded with the blurhash algorithm (https://blurha.sh/)

  Related behaviors:

@ -32,6 +35,7 @@ defmodule Pleroma.Upload do
  """
  alias Ecto.UUID
  alias Pleroma.Config
+  alias Pleroma.Maps
  require Logger

  @type source ::
@ -53,9 +57,12 @@ defmodule Pleroma.Upload do
          name: String.t(),
          tempfile: String.t(),
          content_type: String.t(),
+          width: integer(),
+          height: integer(),
+          blurhash: String.t(),
          path: String.t()
        }
-  defstruct [:id, :name, :tempfile, :content_type, :path]
+  defstruct [:id, :name, :tempfile, :content_type, :width, :height, :blurhash, :path]

  defp get_description(opts, upload) do
    case {opts[:description], Pleroma.Config.get([Pleroma.Upload, :default_description])} do
@ -89,9 +96,12 @@ defmodule Pleroma.Upload do
             "mediaType" => upload.content_type,
             "href" => url_from_spec(upload, opts.base_url, url_spec)
           }
+           |> Maps.put_if_present("width", upload.width)
+           |> Maps.put_if_present("height", upload.height)
         ],
         "name" => description
-       }}
+       }
+       |> Maps.put_if_present("blurhash", upload.blurhash)}
    else
      {:description_limit, _} ->
        {:error, :description_too_long}
@ -225,7 +235,7 @@ defmodule Pleroma.Upload do

    case uploader do
      Pleroma.Uploaders.Local ->
-        upload_base_url || Pleroma.Web.base_url() <> "/media/"
+        upload_base_url || Pleroma.Web.Endpoint.url() <> "/media/"

      Pleroma.Uploaders.S3 ->
        bucket = Config.get([Pleroma.Uploaders.S3, :bucket])
@ -251,7 +261,7 @@ defmodule Pleroma.Upload do
        end

      _ ->
-        public_endpoint || upload_base_url || Pleroma.Web.base_url() <> "/media/"
+        public_endpoint || upload_base_url || Pleroma.Web.Endpoint.url() <> "/media/"
    end
  end
 end
--- a/lib/pleroma/upload/filter.ex
+++ b/lib/pleroma/upload/filter.ex
@ -15,13 +15,13 @@ defmodule Pleroma.Upload.Filter do

  require Logger

-  @callback filter(Pleroma.Upload.t()) ::
+  @callback filter(upload :: struct()) ::
              {:ok, :filtered}
              | {:ok, :noop}
-              | {:ok, :filtered, Pleroma.Upload.t()}
+              | {:ok, :filtered, upload :: struct()}
              | {:error, any()}

-  @spec filter([module()], Pleroma.Upload.t()) :: {:ok, Pleroma.Upload.t()} | {:error, any()}
+  @spec filter([module()], upload :: struct()) :: {:ok, upload :: struct()} | {:error, any()}

  def filter([], upload) do
    {:ok, upload}
--- a/lib/pleroma/upload/filter/analyze_metadata.ex
+++ b/lib/pleroma/upload/filter/analyze_metadata.ex
@ -0,0 +1,83 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Upload.Filter.AnalyzeMetadata do
+  @moduledoc """
+  Extracts metadata about the upload, such as width/height
+  """
+  require Logger
+
+  @behaviour Pleroma.Upload.Filter
+
+  @spec filter(Pleroma.Upload.t()) ::
+          {:ok, :filtered, Pleroma.Upload.t()} | {:ok, :noop} | {:error, String.t()}
+  def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _} = upload) do
+    try do
+      image =
+        file
+        |> Mogrify.open()
+        |> Mogrify.verbose()
+
+      upload =
+        upload
+        |> Map.put(:width, image.width)
+        |> Map.put(:height, image.height)
+        |> Map.put(:blurhash, get_blurhash(file))
+
+      {:ok, :filtered, upload}
+    rescue
+      e in ErlangError ->
+        Logger.warn("#{__MODULE__}: #{inspect(e)}")
+        {:ok, :noop}
+    end
+  end
+
+  def filter(%Pleroma.Upload{tempfile: file, content_type: "video" <> _} = upload) do
+    try do
+      result = media_dimensions(file)
+
+      upload =
+        upload
+        |> Map.put(:width, result.width)
+        |> Map.put(:height, result.height)
+
+      {:ok, :filtered, upload}
+    rescue
+      e in ErlangError ->
+        Logger.warn("#{__MODULE__}: #{inspect(e)}")
+        {:ok, :noop}
+    end
+  end
+
+  def filter(_), do: {:ok, :noop}
+
+  defp get_blurhash(file) do
+    with {:ok, blurhash} <- :eblurhash.magick(file) do
+      blurhash
+    else
+      _ -> nil
+    end
+  end
+
+  defp media_dimensions(file) do
+    with executable when is_binary(executable) <- System.find_executable("ffprobe"),
+         args = [
+           "-v",
+           "error",
+           "-show_entries",
+           "stream=width,height",
+           "-of",
+           "csv=p=0:s=x",
+           file
+         ],
+         {result, 0} <- System.cmd(executable, args),
+         [width, height] <-
+           String.split(String.trim(result), "x") |> Enum.map(&String.to_integer(&1)) do
+      %{width: width, height: height}
+    else
+      nil -> {:error, {:ffprobe, :command_not_found}}
+      {:error, _} = error -> error
+    end
+  end
+end
--- a/lib/pleroma/uploaders/uploader.ex
+++ b/lib/pleroma/uploaders/uploader.ex
@ -35,7 +35,7 @@ defmodule Pleroma.Uploaders.Uploader do

  """
  @type file_spec :: {:file | :url, String.t()}
-  @callback put_file(Pleroma.Upload.t()) ::
+  @callback put_file(upload :: struct()) ::
              :ok | {:ok, file_spec()} | {:error, String.t()} | :wait_callback

  @callback delete_file(file :: String.t()) :: :ok | {:error, String.t()}
@ -46,7 +46,7 @@ defmodule Pleroma.Uploaders.Uploader do
              | {:error, Plug.Conn.t(), String.t()}
  @optional_callbacks http_callback: 2

-  @spec put_file(module(), Pleroma.Upload.t()) :: {:ok, file_spec()} | {:error, String.t()}
+  @spec put_file(module(), upload :: struct()) :: {:ok, file_spec()} | {:error, String.t()}
  def put_file(uploader, upload) do
    case uploader.put_file(upload) do
      :ok -> {:ok, {:file, upload.path}}
--- a/lib/pleroma/user.ex
+++ b/lib/pleroma/user.ex
@ -27,13 +27,13 @@ defmodule Pleroma.User do
  alias Pleroma.Repo
  alias Pleroma.User
  alias Pleroma.UserRelationship
-  alias Pleroma.Web
  alias Pleroma.Web.ActivityPub.ActivityPub
  alias Pleroma.Web.ActivityPub.Builder
  alias Pleroma.Web.ActivityPub.Pipeline
  alias Pleroma.Web.ActivityPub.Utils
  alias Pleroma.Web.CommonAPI
  alias Pleroma.Web.CommonAPI.Utils, as: CommonUtils
+  alias Pleroma.Web.Endpoint
  alias Pleroma.Web.OAuth
  alias Pleroma.Web.RelMe
  alias Pleroma.Workers.BackgroundWorker
@ -360,7 +360,7 @@ defmodule Pleroma.User do

      _ ->
        unless options[:no_default] do
-          Config.get([:assets, :default_user_avatar], "#{Web.base_url()}/images/avi.png")
+          Config.get([:assets, :default_user_avatar], "#{Endpoint.url()}/images/avi.png")
        end
    end
  end
@ -368,13 +368,13 @@ defmodule Pleroma.User do
  def banner_url(user, options \\ []) do
    case user.banner do
      %{"url" => [%{"href" => href} | _]} -> href
-      _ -> !options[:no_default] && "#{Web.base_url()}/images/banner.png"
+      _ -> !options[:no_default] && "#{Endpoint.url()}/images/banner.png"
    end
  end

  # Should probably be renamed or removed
  @spec ap_id(User.t()) :: String.t()
-  def ap_id(%User{nickname: nickname}), do: "#{Web.base_url()}/users/#{nickname}"
+  def ap_id(%User{nickname: nickname}), do: "#{Endpoint.url()}/users/#{nickname}"

  @spec ap_followers(User.t()) :: String.t()
  def ap_followers(%User{follower_address: fa}) when is_binary(fa), do: fa
--- a/lib/pleroma/user/query.ex
+++ b/lib/pleroma/user/query.ex
@ -27,7 +27,7 @@ defmodule Pleroma.User.Query do
      - e.g. Pleroma.User.Query.build(%{ap_id: ["http://ap_id1", "http://ap_id2"]})
  """
  import Ecto.Query
-  import Pleroma.Web.AdminAPI.Search, only: [not_empty_string: 1]
+  import Pleroma.Web.Utils.Guards, only: [not_empty_string: 1]

  alias Pleroma.FollowingRelationship
  alias Pleroma.User
--- a/lib/pleroma/web.ex
+++ b/lib/pleroma/web.ex
@ -35,9 +35,10 @@ defmodule Pleroma.Web do
      import Plug.Conn

      import Pleroma.Web.Gettext
-      import Pleroma.Web.Router.Helpers
      import Pleroma.Web.TranslationHelpers

+      alias Pleroma.Web.Router.Helpers, as: Routes
+
      plug(:set_put_layout)

      defp set_put_layout(conn, _) do
@ -61,6 +62,14 @@ defmodule Pleroma.Web do
        )
      end

+      defp skip_auth(conn, _) do
+        skip_plug(conn, [OAuthScopesPlug, EnsurePublicOrAuthenticatedPlug])
+      end
+
+      defp skip_public_check(conn, _) do
+        skip_plug(conn, EnsurePublicOrAuthenticatedPlug)
+      end
+
      # Executed just before actual controller action, invokes before-action hooks (callbacks)
      defp action(conn, params) do
        with %{halted: false} = conn <-
@ -131,7 +140,8 @@ defmodule Pleroma.Web do

      import Pleroma.Web.ErrorHelpers
      import Pleroma.Web.Gettext
-      import Pleroma.Web.Router.Helpers
+
+      alias Pleroma.Web.Router.Helpers, as: Routes

      require Logger

@ -229,20 +239,4 @@ defmodule Pleroma.Web do
  defmacro __using__(which) when is_atom(which) do
    apply(__MODULE__, which, [])
  end
-
-  def base_url do
-    Pleroma.Web.Endpoint.url()
-  end
-
-  # TODO: Change to Phoenix.Router.routes/1 for Phoenix 1.6.0+
-  def get_api_routes do
-    Pleroma.Web.Router.__routes__()
-    |> Enum.reject(fn r -> r.plug == Pleroma.Web.Fallback.RedirectController end)
-    |> Enum.map(fn r ->
-      r.path
-      |> String.split("/", trim: true)
-      |> List.first()
-    end)
-    |> Enum.uniq()
-  end
 end
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@ -88,7 +88,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do

  defp increase_replies_count_if_reply(_create_data), do: :noop

-  @object_types ~w[ChatMessage Question Answer Audio Video Event Article]
+  @object_types ~w[ChatMessage Question Answer Audio Video Event Article Note]
  @impl true
  def persist(%{"type" => type} = object, meta) when type in @object_types do
    with {:ok, object} <- Object.create(object) do
--- a/lib/pleroma/web/activity_pub/activity_pub/persisting.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub/persisting.ex
@ -3,5 +3,5 @@
 # SPDX-License-Identifier: AGPL-3.0-only

 defmodule Pleroma.Web.ActivityPub.ActivityPub.Persisting do
-  @callback persist(map(), keyword()) :: {:ok, Activity.t() | Object.t()}
+  @callback persist(map(), keyword()) :: {:ok, struct()}
 end
--- a/lib/pleroma/web/activity_pub/activity_pub/streaming.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub/streaming.ex
@ -3,10 +3,6 @@
 # SPDX-License-Identifier: AGPL-3.0-only

 defmodule Pleroma.Web.ActivityPub.ActivityPub.Streaming do
-  alias Pleroma.Activity
-  alias Pleroma.Object
-  alias Pleroma.User
-
-  @callback stream_out(Activity.t()) :: any()
-  @callback stream_out_participations(Object.t(), User.t()) :: any()
+  @callback stream_out(struct()) :: any()
+  @callback stream_out_participations(struct(), struct()) :: any()
 end
--- a/lib/pleroma/web/activity_pub/builder.ex
+++ b/lib/pleroma/web/activity_pub/builder.ex
@ -223,7 +223,7 @@ defmodule Pleroma.Web.ActivityPub.Builder do
          [actor.follower_address]

        public? and Visibility.is_local_public?(object) ->
-          [actor.follower_address, object.data["actor"], Pleroma.Constants.as_local_public()]
+          [actor.follower_address, object.data["actor"], Utils.as_local_public()]

        public? ->
          [actor.follower_address, object.data["actor"], Pleroma.Constants.as_public()]
--- a/lib/pleroma/web/activity_pub/mrf.ex
+++ b/lib/pleroma/web/activity_pub/mrf.ex
@ -51,17 +51,6 @@ defmodule Pleroma.Web.ActivityPub.MRF do

  @required_description_keys [:key, :related_policy]

-  @callback filter(Map.t()) :: {:ok | :reject, Map.t()}
-  @callback describe() :: {:ok | :error, Map.t()}
-  @callback config_description() :: %{
-              optional(:children) => [map()],
-              key: atom(),
-              related_policy: String.t(),
-              label: String.t(),
-              description: String.t()
-            }
-  @optional_callbacks config_description: 0
-
  def filter(policies, %{} = message) do
    policies
    |> Enum.reduce({:ok, message}, fn
@ -142,7 +131,7 @@ defmodule Pleroma.Web.ActivityPub.MRF do
  def describe, do: get_policies() |> describe()

  def config_descriptions do
-    Pleroma.Web.ActivityPub.MRF
+    Pleroma.Web.ActivityPub.MRF.Policy
    |> Pleroma.Docs.Generator.list_behaviour_implementations()
    |> config_descriptions()
  end
--- a/lib/pleroma/web/activity_pub/mrf/activity_expiration_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/activity_expiration_policy.ex
@ -4,7 +4,7 @@

 defmodule Pleroma.Web.ActivityPub.MRF.ActivityExpirationPolicy do
  @moduledoc "Adds expiration to all local Create activities"
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  @impl true
  def filter(activity) do
--- a/lib/pleroma/web/activity_pub/mrf/anti_followbot_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/anti_followbot_policy.ex
@ -7,7 +7,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.AntiFollowbotPolicy do

  @moduledoc "Prevent followbots from following with a bit of heuristic"

-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  # XXX: this should become User.normalize_by_ap_id() or similar, really.
  defp normalize_by_ap_id(%{"id" => id}), do: User.get_cached_by_ap_id(id)
--- a/lib/pleroma/web/activity_pub/mrf/anti_link_spam_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/anti_link_spam_policy.ex
@ -5,7 +5,7 @@
 defmodule Pleroma.Web.ActivityPub.MRF.AntiLinkSpamPolicy do
  alias Pleroma.User

-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  require Logger

--- a/lib/pleroma/web/activity_pub/mrf/drop_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/drop_policy.ex
@ -5,7 +5,7 @@
 defmodule Pleroma.Web.ActivityPub.MRF.DropPolicy do
  require Logger
  @moduledoc "Drop and log everything received"
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  @impl true
  def filter(object) do
--- a/lib/pleroma/web/activity_pub/mrf/ensure_re_prepended.ex
+++ b/lib/pleroma/web/activity_pub/mrf/ensure_re_prepended.ex
@ -6,7 +6,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.EnsureRePrepended do
  alias Pleroma.Object

  @moduledoc "Ensure a re: is prepended on replies to a post with a Subject"
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  @reply_prefix Regex.compile!("^re:[[:space:]]*", [:caseless])

--- a/lib/pleroma/web/activity_pub/mrf/follow_bot_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/follow_bot_policy.ex
@ -1,5 +1,5 @@
 defmodule Pleroma.Web.ActivityPub.MRF.FollowBotPolicy do
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy
  alias Pleroma.Config
  alias Pleroma.User
  alias Pleroma.Web.CommonAPI
--- a/lib/pleroma/web/activity_pub/mrf/force_bot_unlisted_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/force_bot_unlisted_policy.ex
@ -4,7 +4,7 @@

 defmodule Pleroma.Web.ActivityPub.MRF.ForceBotUnlistedPolicy do
  alias Pleroma.User
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy
  @moduledoc "Remove bot posts from federated timeline"

  require Pleroma.Constants
--- a/lib/pleroma/web/activity_pub/mrf/hashtag_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/hashtag_policy.ex
@ -14,7 +14,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.HashtagPolicy do
  Note: This MRF Policy is always enabled, if you want to disable it you have to set empty lists.
  """

-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  defp check_reject(message, hashtags) do
    if Enum.any?(Config.get([:mrf_hashtag, :reject]), fn match -> match in hashtags end) do
--- a/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/hellthread_policy.ex
@ -9,7 +9,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.HellthreadPolicy do

  @moduledoc "Block messages with too much mentions (configurable)"

-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  defp delist_message(message, threshold) when threshold > 0 do
    follower_collection = User.get_cached_by_ap_id(message["actor"]).follower_address
--- a/lib/pleroma/web/activity_pub/mrf/keyword_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/keyword_policy.ex
@ -7,7 +7,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.KeywordPolicy do

  @moduledoc "Reject or Word-Replace messages with a keyword or regex"

-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy
  defp string_matches?(string, _) when not is_binary(string) do
    false
  end
--- a/lib/pleroma/web/activity_pub/mrf/media_proxy_warming_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/media_proxy_warming_policy.ex
@ -4,7 +4,7 @@

 defmodule Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy do
  @moduledoc "Preloads any attachments in the MediaProxy cache by prefetching them"
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  alias Pleroma.HTTP
  alias Pleroma.Web.MediaProxy
--- a/lib/pleroma/web/activity_pub/mrf/mention_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/mention_policy.ex
@ -5,7 +5,7 @@
 defmodule Pleroma.Web.ActivityPub.MRF.MentionPolicy do
  @moduledoc "Block messages which mention a user"

-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  @impl true
  def filter(%{"type" => "Create"} = message) do
--- a/lib/pleroma/web/activity_pub/mrf/no_empty_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/no_empty_policy.ex
@ -4,9 +4,9 @@

 defmodule Pleroma.Web.ActivityPub.MRF.NoEmptyPolicy do
  @moduledoc "Filter local activities which have no content"
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

-  alias Pleroma.Web
+  alias Pleroma.Web.Endpoint

  @impl true
  def filter(%{"actor" => actor} = object) do
@ -24,7 +24,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.NoEmptyPolicy do
  def filter(object), do: {:ok, object}

  defp is_local?(actor) do
-    if actor |> String.starts_with?("#{Web.base_url()}") do
+    if actor |> String.starts_with?("#{Endpoint.url()}") do
      true
    else
      false
--- a/lib/pleroma/web/activity_pub/mrf/no_op_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/no_op_policy.ex
@ -4,7 +4,7 @@

 defmodule Pleroma.Web.ActivityPub.MRF.NoOpPolicy do
  @moduledoc "Does nothing (lets the messages go through unmodified)"
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  @impl true
  def filter(object) do
--- a/lib/pleroma/web/activity_pub/mrf/no_placeholder_text_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/no_placeholder_text_policy.ex
@ -4,7 +4,7 @@

 defmodule Pleroma.Web.ActivityPub.MRF.NoPlaceholderTextPolicy do
  @moduledoc "Ensure no content placeholder is present (such as the dot from mastodon)"
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  @impl true
  def filter(
--- a/lib/pleroma/web/activity_pub/mrf/normalize_markup.ex
+++ b/lib/pleroma/web/activity_pub/mrf/normalize_markup.ex
@ -6,7 +6,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.NormalizeMarkup do
  @moduledoc "Scrub configured hypertext markup"
  alias Pleroma.HTML

-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  @impl true
  def filter(%{"type" => "Create", "object" => child_object} = object) do
--- a/lib/pleroma/web/activity_pub/mrf/object_age_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/object_age_policy.ex
@ -9,7 +9,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.ObjectAgePolicy do
  require Pleroma.Constants

  @moduledoc "Filter activities depending on their age"
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  defp check_date(%{"object" => %{"published" => published}} = message) do
    with %DateTime{} = now <- DateTime.utc_now(),
--- a/lib/pleroma/web/activity_pub/mrf/policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/policy.ex
@ -0,0 +1,16 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ActivityPub.MRF.Policy do
+  @callback filter(Map.t()) :: {:ok | :reject, Map.t()}
+  @callback describe() :: {:ok | :error, Map.t()}
+  @callback config_description() :: %{
+              optional(:children) => [map()],
+              key: atom(),
+              related_policy: String.t(),
+              label: String.t(),
+              description: String.t()
+            }
+  @optional_callbacks config_description: 0
+end
--- a/lib/pleroma/web/activity_pub/mrf/reject_non_public.ex
+++ b/lib/pleroma/web/activity_pub/mrf/reject_non_public.ex
@ -8,7 +8,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.RejectNonPublic do
  alias Pleroma.Config
  alias Pleroma.User

-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  require Pleroma.Constants

--- a/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
@ -4,7 +4,7 @@

 defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
  @moduledoc "Filter activities depending on their origin instance"
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  alias Pleroma.Config
  alias Pleroma.FollowingRelationship
@ -177,6 +177,14 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do

  defp check_banner_removal(_actor_info, object), do: {:ok, object}

+  defp check_object(%{"object" => object} = activity) do
+    with {:ok, _object} <- filter(object) do
+      {:ok, activity}
+    end
+  end
+
+  defp check_object(object), do: {:ok, object}
+
  @impl true
  def filter(%{"type" => "Delete", "actor" => actor} = object) do
    %{host: actor_host} = URI.parse(actor)
@ -202,7 +210,8 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
         {:ok, object} <- check_media_nsfw(actor_info, object),
         {:ok, object} <- check_ftl_removal(actor_info, object),
         {:ok, object} <- check_followers_only(actor_info, object),
-         {:ok, object} <- check_report_removal(actor_info, object) do
+         {:ok, object} <- check_report_removal(actor_info, object),
+         {:ok, object} <- check_object(object) do
      {:ok, object}
    else
      {:reject, nil} -> {:reject, "[SimplePolicy]"}
@ -227,6 +236,19 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
    end
  end

+  def filter(object) when is_binary(object) do
+    uri = URI.parse(object)
+
+    with {:ok, object} <- check_accept(uri, object),
+         {:ok, object} <- check_reject(uri, object) do
+      {:ok, object}
+    else
+      {:reject, nil} -> {:reject, "[SimplePolicy]"}
+      {:reject, _} = e -> e
+      _ -> {:reject, "[SimplePolicy]"}
+    end
+  end
+
  def filter(object), do: {:ok, object}

  @impl true
--- a/lib/pleroma/web/activity_pub/mrf/steal_emoji_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/steal_emoji_policy.ex
@ -8,7 +8,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.StealEmojiPolicy do
  alias Pleroma.Config

  @moduledoc "Detect new emojis by their shortcode and steals them"
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  defp accept_host?(host), do: host in Config.get([:mrf_steal_emoji, :hosts], [])

--- a/lib/pleroma/web/activity_pub/mrf/subchain_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/subchain_policy.ex
@ -8,7 +8,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.SubchainPolicy do

  require Logger

-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  defp lookup_subchain(actor) do
    with matches <- Config.get([:mrf_subchain, :match_actor]),
--- a/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/tag_policy.ex
@ -4,7 +4,7 @@

 defmodule Pleroma.Web.ActivityPub.MRF.TagPolicy do
  alias Pleroma.User
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy
  @moduledoc """
     Apply policies based on user tags

--- a/lib/pleroma/web/activity_pub/mrf/user_allow_list_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/user_allow_list_policy.ex
@ -6,7 +6,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.UserAllowListPolicy do
  alias Pleroma.Config

  @moduledoc "Accept-list of users from specified instances"
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  defp filter_by_list(object, []), do: {:ok, object}

--- a/lib/pleroma/web/activity_pub/mrf/vocabulary_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/vocabulary_policy.ex
@ -5,7 +5,7 @@
 defmodule Pleroma.Web.ActivityPub.MRF.VocabularyPolicy do
  @moduledoc "Filter messages which belong to certain activity vocabularies"

-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy

  @impl true
  def filter(%{"type" => "Undo", "object" => child_message} = message) do
--- a/lib/pleroma/web/activity_pub/object_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validator.ex
@ -102,7 +102,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidator do
        %{"type" => "Create", "object" => %{"type" => objtype} = object} = create_activity,
        meta
      )
-      when objtype in ~w[Question Answer Audio Video Event Article] do
+      when objtype in ~w[Question Answer Audio Video Event Article Note] do
    with {:ok, object_data} <- cast_and_apply(object),
         meta = Keyword.put(meta, :object_data, object_data |> stringify_keys),
         {:ok, create_activity} <-
@ -115,7 +115,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidator do
  end

  def validate(%{"type" => type} = object, meta)
-      when type in ~w[Event Question Audio Video Article] do
+      when type in ~w[Event Question Audio Video Article Note] do
    validator =
      case type do
        "Event" -> EventValidator
@ -123,6 +123,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidator do
        "Audio" -> AudioVideoValidator
        "Video" -> AudioVideoValidator
        "Article" -> ArticleNoteValidator
+        "Note" -> ArticleNoteValidator
      end

    with {:ok, object} <-
@ -194,7 +195,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidator do
    EventValidator.cast_and_apply(object)
  end

-  def cast_and_apply(%{"type" => "Article"} = object) do
+  def cast_and_apply(%{"type" => type} = object) when type in ~w[Article Note] do
    ArticleNoteValidator.cast_and_apply(object)
  end

--- a/lib/pleroma/web/activity_pub/object_validators/announce_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/announce_validator.ex
@ -8,6 +8,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AnnounceValidator do
  alias Pleroma.EctoType.ActivityPub.ObjectValidators
  alias Pleroma.Object
  alias Pleroma.User
+  alias Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes
  alias Pleroma.Web.ActivityPub.Utils
  alias Pleroma.Web.ActivityPub.Visibility

@ -23,7 +24,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AnnounceValidator do
    field(:type, :string)
    field(:object, ObjectValidators.ObjectID)
    field(:actor, ObjectValidators.ObjectID)
-    field(:context, :string, autogenerate: {Utils, :generate_context_id, []})
+    field(:context, :string)
    field(:to, ObjectValidators.Recipients, default: [])
    field(:cc, ObjectValidators.Recipients, default: [])
    field(:published, ObjectValidators.DateTime)
@ -36,6 +37,10 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AnnounceValidator do
  end

  def cast_data(data) do
+    data =
+      data
+      |> fix()
+
    %__MODULE__{}
    |> changeset(data)
  end
@ -43,11 +48,21 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AnnounceValidator do
  def changeset(struct, data) do
    struct
    |> cast(data, __schema__(:fields))
-    |> fix_after_cast()
  end

-  def fix_after_cast(cng) do
-    cng
+  defp fix(data) do
+    data =
+      data
+      |> CommonFixes.fix_actor()
+      |> CommonFixes.fix_activity_addressing()
+
+    with %Object{} = object <- Object.normalize(data["object"]) do
+      data
+      |> CommonFixes.fix_activity_context(object)
+      |> CommonFixes.fix_object_action_recipients(object)
+    else
+      _ -> data
+    end
  end

  defp validate_data(data_cng) do
@ -60,7 +75,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AnnounceValidator do
    |> validate_announcable()
  end

-  def validate_announcable(cng) do
+  defp validate_announcable(cng) do
    with actor when is_binary(actor) <- get_field(cng, :actor),
         object when is_binary(object) <- get_field(cng, :object),
         %User{} = actor <- User.get_cached_by_ap_id(actor),
@ -68,7 +83,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AnnounceValidator do
         false <- Visibility.is_public?(object) do
      same_actor = object.data["actor"] == actor.ap_id
      recipients = get_field(cng, :to) ++ get_field(cng, :cc)
-      local_public = Pleroma.Constants.as_local_public()
+      local_public = Utils.as_local_public()

      is_public =
        Enum.member?(recipients, Pleroma.Constants.as_public()) or
@ -91,7 +106,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AnnounceValidator do
    end
  end

-  def validate_existing_announce(cng) do
+  defp validate_existing_announce(cng) do
    actor = get_field(cng, :actor)
    object = get_field(cng, :object)

--- a/lib/pleroma/web/activity_pub/object_validators/answer_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/answer_validator.ex
@ -6,6 +6,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AnswerValidator do
  use Ecto.Schema

  alias Pleroma.EctoType.ActivityPub.ObjectValidators
+  alias Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes
  alias Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations

  import Ecto.Changeset
@ -23,6 +24,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AnswerValidator do
    field(:name, :string)
    field(:inReplyTo, ObjectValidators.ObjectID)
    field(:attributedTo, ObjectValidators.ObjectID)
+    field(:context, :string)

    # TODO: Remove actor on objects
    field(:actor, ObjectValidators.ObjectID)
@ -46,6 +48,11 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AnswerValidator do
  end

  def changeset(struct, data) do
+    data =
+      data
+      |> CommonFixes.fix_actor()
+      |> CommonFixes.fix_object_defaults()
+
    struct
    |> cast(data, __schema__(:fields))
  end
--- a/lib/pleroma/web/activity_pub/object_validators/article_note_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/article_note_validator.ex
@ -50,6 +50,8 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.ArticleNoteValidator do

    field(:likes, {:array, ObjectValidators.ObjectID}, default: [])
    field(:announcements, {:array, ObjectValidators.ObjectID}, default: [])
+
+    field(:replies, {:array, ObjectValidators.ObjectID}, default: [])
  end

  def cast_and_apply(data) do
@ -65,25 +67,39 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.ArticleNoteValidator do
  end

  def cast_data(data) do
-    data = fix(data)
-
    %__MODULE__{}
    |> changeset(data)
  end

-  defp fix_url(%{"url" => url} = data) when is_map(url) do
-    Map.put(data, "url", url["href"])
-  end
-
+  defp fix_url(%{"url" => url} = data) when is_bitstring(url), do: data
+  defp fix_url(%{"url" => url} = data) when is_map(url), do: Map.put(data, "url", url["href"])
  defp fix_url(data), do: data

+  defp fix_tag(%{"tag" => tag} = data) when is_list(tag), do: data
+  defp fix_tag(%{"tag" => tag} = data) when is_map(tag), do: Map.put(data, "tag", [tag])
+  defp fix_tag(data), do: Map.drop(data, ["tag"])
+
+  defp fix_replies(%{"replies" => %{"first" => %{"items" => replies}}} = data)
+       when is_list(replies),
+       do: Map.put(data, "replies", replies)
+
+  defp fix_replies(%{"replies" => %{"items" => replies}} = data) when is_list(replies),
+    do: Map.put(data, "replies", replies)
+
+  defp fix_replies(%{"replies" => replies} = data) when is_bitstring(replies),
+    do: Map.drop(data, ["replies"])
+
+  defp fix_replies(data), do: data
+
  defp fix(data) do
    data
-    |> CommonFixes.fix_defaults()
-    |> CommonFixes.fix_attribution()
    |> CommonFixes.fix_actor()
+    |> CommonFixes.fix_object_defaults()
    |> fix_url()
+    |> fix_tag()
+    |> fix_replies()
    |> Transmogrifier.fix_emoji()
+    |> Transmogrifier.fix_content_map()
  end

  def changeset(struct, data) do
--- a/lib/pleroma/web/activity_pub/object_validators/attachment_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/attachment_validator.ex
@ -20,6 +20,8 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AttachmentValidator do
      field(:type, :string)
      field(:href, ObjectValidators.Uri)
      field(:mediaType, :string, default: "application/octet-stream")
+      field(:width, :integer)
+      field(:height, :integer)
    end
  end

@ -51,7 +53,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AttachmentValidator do
    data = fix_media_type(data)

    struct
-    |> cast(data, [:type, :href, :mediaType])
+    |> cast(data, [:type, :href, :mediaType, :width, :height])
    |> validate_inclusion(:type, ["Link"])
    |> validate_required([:type, :href, :mediaType])
  end
@ -59,7 +61,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AttachmentValidator do
  def fix_media_type(data) do
    data = Map.put_new(data, "mediaType", data["mimeType"])

-    if MIME.valid?(data["mediaType"]) do
+    if is_bitstring(data["mediaType"]) && MIME.extensions(data["mediaType"]) != [] do
      data
    else
      Map.put(data, "mediaType", "application/octet-stream")
--- a/lib/pleroma/web/activity_pub/object_validators/audio_video_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/audio_video_validator.ex
@ -119,9 +119,8 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AudioVideoValidator do

  defp fix(data) do
    data
-    |> CommonFixes.fix_defaults()
-    |> CommonFixes.fix_attribution()
    |> CommonFixes.fix_actor()
+    |> CommonFixes.fix_object_defaults()
    |> Transmogrifier.fix_emoji()
    |> fix_url()
    |> fix_content()
--- a/lib/pleroma/web/activity_pub/object_validators/common_fixes.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/common_fixes.ex
@ -3,29 +3,76 @@
 # SPDX-License-Identifier: AGPL-3.0-only

 defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes do
+  alias Pleroma.EctoType.ActivityPub.ObjectValidators
+  alias Pleroma.Object
  alias Pleroma.Object.Containment
+  alias Pleroma.User
+  alias Pleroma.Web.ActivityPub.Transmogrifier
  alias Pleroma.Web.ActivityPub.Utils

-  # based on Pleroma.Web.ActivityPub.Utils.lazy_put_objects_defaults
-  def fix_defaults(data) do
+  def cast_and_filter_recipients(message, field, follower_collection, field_fallback \\ []) do
+    {:ok, data} = ObjectValidators.Recipients.cast(message[field] || field_fallback)
+
+    data =
+      Enum.reject(data, fn x ->
+        String.ends_with?(x, "/followers") and x != follower_collection
+      end)
+
+    Map.put(message, field, data)
+  end
+
+  def fix_object_defaults(data) do
    %{data: %{"id" => context}, id: context_id} =
      Utils.create_context(data["context"] || data["conversation"])

+    %User{follower_address: follower_collection} = User.get_cached_by_ap_id(data["attributedTo"])
+
    data
    |> Map.put("context", context)
    |> Map.put("context_id", context_id)
+    |> cast_and_filter_recipients("to", follower_collection)
+    |> cast_and_filter_recipients("cc", follower_collection)
+    |> cast_and_filter_recipients("bto", follower_collection)
+    |> cast_and_filter_recipients("bcc", follower_collection)
+    |> Transmogrifier.fix_implicit_addressing(follower_collection)
  end

-  def fix_attribution(data) do
-    data
-    |> Map.put_new("actor", data["attributedTo"])
+  def fix_activity_addressing(activity) do
+    %User{follower_address: follower_collection} = User.get_cached_by_ap_id(activity["actor"])
+
+    activity
+    |> cast_and_filter_recipients("to", follower_collection)
+    |> cast_and_filter_recipients("cc", follower_collection)
+    |> cast_and_filter_recipients("bto", follower_collection)
+    |> cast_and_filter_recipients("bcc", follower_collection)
+    |> Transmogrifier.fix_implicit_addressing(follower_collection)
  end

  def fix_actor(data) do
-    actor = Containment.get_actor(data)
+    actor =
+      data
+      |> Map.put_new("actor", data["attributedTo"])
+      |> Containment.get_actor()

    data
    |> Map.put("actor", actor)
    |> Map.put("attributedTo", actor)
  end
+
+  def fix_activity_context(data, %Object{data: %{"context" => object_context}}) do
+    data
+    |> Map.put("context", object_context)
+  end
+
+  def fix_object_action_recipients(%{"actor" => actor} = data, %Object{data: %{"actor" => actor}}) do
+    to = ((data["to"] || []) -- [actor]) |> Enum.uniq()
+
+    Map.put(data, "to", to)
+  end
+
+  def fix_object_action_recipients(data, %Object{data: %{"actor" => actor}}) do
+    to = ((data["to"] || []) ++ [actor]) |> Enum.uniq()
+
+    Map.put(data, "to", to)
+  end
 end
--- a/lib/pleroma/web/activity_pub/object_validators/common_validations.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/common_validations.ex
@ -15,6 +15,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations do
      fields
      |> Enum.map(fn field -> get_field(cng, field) end)
      |> Enum.any?(fn
+        nil -> false
        [] -> false
        _ -> true
      end)
--- a/lib/pleroma/web/activity_pub/object_validators/create_generic_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/create_generic_validator.ex
@ -10,8 +10,10 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CreateGenericValidator do

  alias Pleroma.EctoType.ActivityPub.ObjectValidators
  alias Pleroma.Object
+  alias Pleroma.User
  alias Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes
  alias Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
+  alias Pleroma.Web.ActivityPub.Transmogrifier

  import Ecto.Changeset

@ -23,6 +25,8 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CreateGenericValidator do
    field(:type, :string)
    field(:to, ObjectValidators.Recipients, default: [])
    field(:cc, ObjectValidators.Recipients, default: [])
+    field(:bto, ObjectValidators.Recipients, default: [])
+    field(:bcc, ObjectValidators.Recipients, default: [])
    field(:object, ObjectValidators.ObjectID)
    field(:expires_at, ObjectValidators.DateTime)

@ -54,39 +58,37 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CreateGenericValidator do
    |> cast(data, __schema__(:fields))
  end

-  defp fix_context(data, meta) do
-    if object = meta[:object_data] do
-      Map.put_new(data, "context", object["context"])
-    else
-      data
-    end
-  end
+  # CommonFixes.fix_activity_addressing adapted for Create specific behavior
+  defp fix_addressing(data, object) do
+    %User{follower_address: follower_collection} = User.get_cached_by_ap_id(data["actor"])
+
+    data
+    |> CommonFixes.cast_and_filter_recipients("to", follower_collection, object["to"])
+    |> CommonFixes.cast_and_filter_recipients("cc", follower_collection, object["cc"])
+    |> CommonFixes.cast_and_filter_recipients("bto", follower_collection, object["bto"])
+    |> CommonFixes.cast_and_filter_recipients("bcc", follower_collection, object["bcc"])
+    |> Transmogrifier.fix_implicit_addressing(follower_collection)
+  end
+
+  def fix(data, meta) do
+    object = meta[:object_data]

-  defp fix_addressing(data, meta) do
-    if object = meta[:object_data] do
-      data
-      |> Map.put_new("to", object["to"] || [])
-      |> Map.put_new("cc", object["cc"] || [])
-    else
-      data
-    end
-  end
-
-  defp fix(data, meta) do
    data
-    |> fix_context(meta)
-    |> fix_addressing(meta)
    |> CommonFixes.fix_actor()
+    |> Map.put_new("context", object["context"])
+    |> fix_addressing(object)
  end

  defp validate_data(cng, meta) do
+    object = meta[:object_data]
+
    cng
-    |> validate_required([:actor, :type, :object])
+    |> validate_required([:actor, :type, :object, :to, :cc])
    |> validate_inclusion(:type, ["Create"])
    |> CommonValidations.validate_actor_presence()
-    |> CommonValidations.validate_any_presence([:to, :cc])
-    |> validate_actors_match(meta)
-    |> validate_context_match(meta)
+    |> validate_actors_match(object)
+    |> validate_context_match(object)
+    |> validate_addressing_match(object)
    |> validate_object_nonexistence()
    |> validate_object_containment()
  end
@ -118,8 +120,8 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CreateGenericValidator do
    end)
  end

-  def validate_actors_match(cng, meta) do
-    attributed_to = meta[:object_data]["attributedTo"] || meta[:object_data]["actor"]
+  def validate_actors_match(cng, object) do
+    attributed_to = object["attributedTo"] || object["actor"]

    cng
    |> validate_change(:actor, fn :actor, actor ->
@ -131,7 +133,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CreateGenericValidator do
    end)
  end

-  def validate_context_match(cng, %{object_data: %{"context" => object_context}}) do
+  def validate_context_match(cng, %{"context" => object_context}) do
    cng
    |> validate_change(:context, fn :context, context ->
      if context == object_context do
@ -142,5 +144,18 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CreateGenericValidator do
    end)
  end

-  def validate_context_match(cng, _), do: cng
+  def validate_addressing_match(cng, object) do
+    [:to, :cc, :bcc, :bto]
+    |> Enum.reduce(cng, fn field, cng ->
+      object_data = object[to_string(field)]
+
+      validate_change(cng, field, fn field, data ->
+        if data == object_data do
+          []
+        else
+          [{field, "field doesn't match with object (#{inspect(object_data)})"}]
+        end
+      end)
+    end)
+  end
 end
--- a/Show more
+++ b/Show more