Merge branch 'develop' into phoenix1.7

2024-12-22 08:06:55 +00:00 · 2023-11-07 16:05:04 -05:00 · 2023-11-07 16:05:04 -05:00 · a0e08c6ec2
commit a0e08c6ec2
parent 63ef1dcedc 11c520607f
251 changed files with 6494 additions and 1976 deletions
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@ -66,13 +66,21 @@ check-changelog:
        - "**/*.exs"
        - "mix.lock"

+.using-ci-base:
+  tags:
+    - amd64
+
 build:
-  extends: .build_changes_policy
+  extends:
+  - .build_changes_policy
+  - .using-ci-base
  stage: build
  script:
  - mix compile --force

 spec-build:
+  extends:
+  - .using-ci-base
  stage: test
  rules:
    - changes:
@ -86,6 +94,8 @@ spec-build:
  - mix pleroma.openapi_spec spec.json

 benchmark:
+  extends:
+  - .using-ci-base
  stage: benchmark
  when: manual
  variables:
@ -100,7 +110,9 @@ benchmark:
    - mix pleroma.load_testing

 unit-testing:
-  extends: .build_changes_policy
+  extends:
+  - .build_changes_policy
+  - .using-ci-base
  stage: test
  cache: &testing_cache_policy
    <<: *global_cache_policy
@ -122,7 +134,9 @@ unit-testing:
        path: coverage.xml

 unit-testing-erratic:
-  extends: .build_changes_policy
+  extends:
+  - .build_changes_policy
+  - .using-ci-base
  stage: test
  retry: 2
  allow_failure: true
@ -156,7 +170,9 @@ unit-testing-erratic:
 #     - mix test --trace --only federated

 unit-testing-rum:
-  extends: .build_changes_policy
+  extends:
+  - .build_changes_policy
+  - .using-ci-base
  stage: test
  cache: *testing_cache_policy
  services:
@ -187,7 +203,9 @@ lint:
    - mix format --check-formatted

 analysis:
-  extends: .build_changes_policy
+  extends:
+  - .build_changes_policy
+  - .using-ci-base
  stage: test
  cache: *testing_cache_policy
  script:
@ -213,7 +231,7 @@ docs-deploy:
  before_script:
  - apk add curl
  script:
-  - curl -X POST -F"token=$DOCS_PIPELINE_TRIGGER" -F'ref=master' -F"variables[BRANCH]=$CI_COMMIT_REF_NAME" https://git.pleroma.social/api/v4/projects/673/trigger/pipeline
+  - curl --fail-with-body -X POST -F"token=$CI_JOB_TOKEN" -F'ref=master' -F"variables[BRANCH]=$CI_COMMIT_REF_NAME" https://git.pleroma.social/api/v4/projects/673/trigger/pipeline
 review_app:
  image: alpine:3.9
  stage: deploy
@ -254,7 +272,7 @@ spec-deploy:
  before_script:
    - apk add curl
  script:
-    - curl -X POST -F"token=$API_DOCS_PIPELINE_TRIGGER" -F'ref=master' -F"variables[BRANCH]=$CI_COMMIT_REF_NAME" -F"variables[JOB_REF]=$CI_JOB_ID" https://git.pleroma.social/api/v4/projects/1130/trigger/pipeline
+    - curl --fail-with-body -X POST -F"token=$CI_JOB_TOKEN" -F'ref=master' -F"variables[BRANCH]=$CI_COMMIT_REF_NAME" -F"variables[JOB_REF]=$CI_JOB_ID" https://git.pleroma.social/api/v4/projects/1130/trigger/pipeline


 stop_review_app:
--- a/.gitlab/merge_request_templates/Release.md
+++ b/.gitlab/merge_request_templates/Release.md
@ -1,6 +1,6 @@
 ### Release checklist
 * [ ] Bump version in `mix.exs`
-* [ ] Compile a changelog
+* [ ] Compile a changelog with the `tools/collect-changelog` script
 * [ ] Create an MR with an announcement to pleroma.social
 #### post-merge
 * [ ] Tag the release on the merge commit
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -4,19 +4,76 @@ All notable changes to this project will be documented in this file.

 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).

-## Unreleased
-
-### Changed
+## 2.6.0
+### Security
+- Preload: Make generated JSON html-safe. It already was html safe because it only consists of config data that is base64 encoded, but this will keep it safe it that ever changes.
+- CommonAPI: Prevent users from accessing media of other users by creating a status with reused attachment ID
+- Disable XML entity resolution completely to fix a dos vulnerability

 ### Added
 - Support for Image activities, namely from Hubzilla
+- Add OAuth scope descriptions
+- Allow lang attribute in status text
+- OnlyMedia Upload Filter
+- Implement MRF policy to reject or delist according to emojis
+- (hardening) Add no_new_privs=yes to OpenRC service files
+- Implement quotes
+- Add unified streaming endpoint

 ### Fixed
-
 - rel="me" was missing its cache
+- MediaProxy responses now return a sandbox CSP header
+- Filter context activities using Visibility.visible_for_user?
+- UploadedMedia: Add missing disposition_type to Content-Disposition
+- fix not being able to fetch flash file from remote instance
+- Fix abnormal behaviour when refetching a poll
+- Allow non-HTTP(s) URIs in "url" fields for compatibility with "FEP-fffd: Proxy Objects"
+- Fix opengraph and twitter card meta tags
+- ForceMentionsInContent: fix double mentions for Mastodon/Misskey posts
+- OEmbed HTML tags are now filtered
+- Restrict attachments to only uploaded files only
+- Fix error 404 when deleting status of a banned user
+- Fix config ownership in dockerfile to pass restriction test
+- Fix user fetch completely broken if featured collection is not in a supported form
+- Correctly handle the situation when a poll has both "anyOf" and "oneOf" but one of them being empty
+- Fix handling report from a deactivated user
+- Prevent using the .json format to bypass authorized fetch mode
+- Fix mentioning punycode domains when using Markdown
+- Show more informative errors when profile exceeds char limits

 ### Removed
 - BREAKING: Support for passwords generated with `crypt(3)` (Gnu Social migration artifact)
+- remove BBS/SSH feature, replaced by an external bridge.
+- Remove a few unused indexes.
+- Cleanup OStatus-era user upgrades and ap_enabled indicator
+- Deprecate Pleroma's audio scrobbling
+
+## 2.5.4
+
+## Security
+- Fix XML External Entity (XXE) loading vulnerability allowing to fetch arbitary files from the server's filesystem
+
+## 2.5.3
+
+### Security
+- Emoji pack loader sanitizes pack names
+- Reduced permissions of config files and directories, distros requiring greater permissions like group-read need to pre-create the directories
+
+## 2.5.5
+
+## Security
+- Prevent users from accessing media of other users by creating a status with reused attachment ID
+
+## 2.5.4
+
+## Security
+- Fix XML External Entity (XXE) loading vulnerability allowing to fetch arbitary files from the server's filesystem
+
+## 2.5.3
+
+### Security
+- Emoji pack loader sanitizes pack names
+- Reduced permissions of config files and directories, distros requiring greater permissions like group-read need to pre-create the directories

 ## 2.5.2

--- a/2
+++ b/2
@ -49,7 +49,7 @@ USER pleroma

 COPY --from=build --chown=pleroma:0 /release ${HOME}

-COPY ./config/docker.exs /etc/pleroma/config.exs
+COPY --chown=pleroma --chmod=640 ./config/docker.exs /etc/pleroma/config.exs
 COPY ./docker-entrypoint.sh ${HOME}

 EXPOSE 4000
--- a/README.md
+++ b/README.md
@ -30,7 +30,8 @@ If your platform is not supported, or you just want to be able to edit the sourc
 - [OpenBSD (fi)](https://docs-develop.pleroma.social/backend/installation/openbsd_fi/)

 ### OS/Distro packages
-Currently Pleroma is packaged for [YunoHost](https://yunohost.org) and [NixOS](https://nixos.org). If you want to package Pleroma for any OS/Distros, we can guide you through the process on our [community channels](#community-channels). If you want to change default options in your Pleroma package, please **discuss it with us first**.
+Currently Pleroma is packaged for [YunoHost](https://yunohost.org), [NixOS](https://nixos.org), [Gentoo through GURU](https://gentoo.org/) and [Archlinux through AUR](https://aur.archlinux.org/packages/pleroma). You may find more at <https://repology.org/project/pleroma/versions>.  
+If you want to package Pleroma for any OS/Distros, we can guide you through the process on our [community channels](#community-channels). If you want to change default options in your Pleroma package, please **discuss it with us first**.

 ### 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>.
--- a/changelog.d/2.6.0-mergeback.skip
+++ b/changelog.d/2.6.0-mergeback.skip
--- a/changelog.d/3126.fix
+++ b/changelog.d/3126.fix
@ -1 +0,0 @@
-MediaProxy responses now return a sandbox CSP header
--- a/changelog.d/3831.skip
+++ b/changelog.d/3831.skip
--- a/changelog.d/3848.add
+++ b/changelog.d/3848.add
@ -1 +0,0 @@
-Add OAuth scope descriptions
--- a/changelog.d/3870.skip
+++ b/changelog.d/3870.skip
--- a/changelog.d/3872.remove
+++ b/changelog.d/3872.remove
@ -1 +0,0 @@
-remove BBS/SSH feature, replaced by an external bridge.
--- a/changelog.d/3873.fix
+++ b/changelog.d/3873.fix
@ -1 +0,0 @@
-UploadedMedia: Add missing disposition_type to Content-Disposition
--- a/changelog.d/3876.skip
+++ b/changelog.d/3876.skip
--- a/changelog.d/3877.skip
+++ b/changelog.d/3877.skip
--- a/changelog.d/3878.skip
+++ b/changelog.d/3878.skip
--- a/changelog.d/3882.add
+++ b/changelog.d/3882.add
@ -1 +0,0 @@
-Allow lang attribute in status text
--- a/changelog.d/3883.fix
+++ b/changelog.d/3883.fix
@ -1 +0,0 @@
-Fix abnormal behaviour when refetching a poll
--- a/changelog.d/3891.fix
+++ b/changelog.d/3891.fix
@ -1 +0,0 @@
-OEmbed HTML tags are now filtered
--- a/changelog.d/3893.skip
+++ b/changelog.d/3893.skip
--- a/changelog.d/3896.add
+++ b/changelog.d/3896.add
@ -1 +0,0 @@
-Validate Host header for MediaProxy and Uploads and return a 302 if the base_url has changed
--- a/changelog.d/3897.add
+++ b/changelog.d/3897.add
@ -1 +0,0 @@
-OnlyMedia Upload Filter
--- a/changelog.d/3899.skip
+++ b/changelog.d/3899.skip
--- a/changelog.d/akkoma-xml-remote-entities.security
+++ b/changelog.d/akkoma-xml-remote-entities.security
@ -0,0 +1 @@
+Fix XML External Entity (XXE) loading vulnerability allowing to fetch arbitary files from the server's filesystem
--- a/changelog.d/changelog-improve.skip
+++ b/changelog.d/changelog-improve.skip
--- a/changelog.d/check-attachment-attribution.security
+++ b/changelog.d/check-attachment-attribution.security
@ -0,0 +1 @@
+CommonAPI: Prevent users from accessing media of other users by creating a status with reused attachment ID
--- a/changelog.d/digest_emails.fix
+++ b/changelog.d/digest_emails.fix
@ -0,0 +1 @@
+Fix the processing of email digest jobs.
--- a/changelog.d/emoji-pack-sanitization.security
+++ b/changelog.d/emoji-pack-sanitization.security
@ -0,0 +1 @@
+Emoji pack loader sanitizes pack names
--- a/changelog.d/fix-object-test.fix
+++ b/changelog.d/fix-object-test.fix
@ -1 +0,0 @@
-Correctly handle the situation when a poll has both "anyOf" and "oneOf" but one of them being empty
--- a/changelog.d/otp_perms.security
+++ b/changelog.d/otp_perms.security
@ -0,0 +1 @@
+- Reduced permissions of config files and directories, distros requiring greater permissions like group-read need to pre-create the directories
--- a/config/config.exs
+++ b/config/config.exs
@ -394,6 +394,12 @@ config :pleroma, :mrf_keyword,
  federated_timeline_removal: [],
  replace: []

+config :pleroma, :mrf_emoji,
+  remove_url: [],
+  remove_shortcode: [],
+  federated_timeline_removal_url: [],
+  federated_timeline_removal_shortcode: []
+
 config :pleroma, :mrf_hashtag,
  sensitive: ["nsfw"],
  reject: [],
@ -414,6 +420,8 @@ config :pleroma, :mrf_object_age,

 config :pleroma, :mrf_follow_bot, follower_nickname: nil

+config :pleroma, :mrf_inline_quote, template: "<bdi>RT:</bdi> {url}"
+
 config :pleroma, :rich_media,
  enabled: true,
  ignore_hosts: [],
@ -568,7 +576,6 @@ config :pleroma, Oban,
    background: 5,
    remote_fetcher: 2,
    attachments_cleanup: 1,
-    new_users_digest: 1,
    mute_expire: 5
  ],
  plugins: [Oban.Plugins.Pruner],
@ -838,7 +845,11 @@ config :pleroma, :restrict_unauthenticated,
 config :pleroma, Pleroma.Web.ApiSpec.CastAndValidate, strict: false

 config :pleroma, :mrf,
-  policies: [Pleroma.Web.ActivityPub.MRF.ObjectAgePolicy, Pleroma.Web.ActivityPub.MRF.TagPolicy],
+  policies: [
+    Pleroma.Web.ActivityPub.MRF.ObjectAgePolicy,
+    Pleroma.Web.ActivityPub.MRF.TagPolicy,
+    Pleroma.Web.ActivityPub.MRF.InlineQuotePolicy
+  ],
  transparency: true,
  transparency_exclusions: []

@ -857,7 +868,9 @@ config :pleroma, Pleroma.Web.Auth.Authenticator, Pleroma.Web.Auth.PleromaAuthent
 config :pleroma, Pleroma.User.Backup,
  purge_after_days: 30,
  limit_days: 7,
-  dir: nil
+  dir: nil,
+  process_wait_time: 30_000,
+  process_chunk_size: 100

 config :pleroma, ConcurrentLimiter, [
  {Pleroma.Web.RichMedia.Helpers, [max_running: 5, max_waiting: 5]},
--- a/config/description.exs
+++ b/config/description.exs
@ -3364,6 +3364,21 @@ config :pleroma, :config_description, [
        type: :integer,
        description: "Limit user to export not more often than once per N days",
        suggestions: [7]
+      },
+      %{
+        key: :process_wait_time,
+        type: :integer,
+        label: "Process Wait Time",
+        description:
+          "The amount of time to wait for backup to report progress, in milliseconds. If no progress is received from the backup job for that much time, terminate it and deem it failed.",
+        suggestions: [30_000]
+      },
+      %{
+        key: :process_chunk_size,
+        type: :integer,
+        label: "Process Chunk Size",
+        description: "The number of activities to fetch in the backup job for each chunk.",
+        suggestions: [100]
      }
    ]
  },
--- a/docs/configuration/cheatsheet.md
+++ b/docs/configuration/cheatsheet.md
@ -160,6 +160,8 @@ To add configuration to your config file, you can copy it from the base config.
    * `Pleroma.Web.ActivityPub.MRF.AntiFollowbotPolicy`: Drops follow requests from followbots. Users can still allow bots to follow them by first following the bot.
    * `Pleroma.Web.ActivityPub.MRF.KeywordPolicy`: Rejects or removes from the federated timeline or replaces keywords. (See [`:mrf_keyword`](#mrf_keyword)).
    * `Pleroma.Web.ActivityPub.MRF.ForceMentionsInContent`: Forces every mentioned user to be reflected in the post content.
+    * `Pleroma.Web.ActivityPub.MRF.InlineQuotePolicy`: Forces quote post URLs to be reflected in the message content inline.
+    * `Pleroma.Web.ActivityPub.MRF.QuoteToLinkTagPolicy`: Force a Link tag for posts quoting another post. (may break outgoing federation of quote posts with older Pleroma versions)
 * `transparency`: Make the content of your Message Rewrite Facility settings public (via nodeinfo).
 * `transparency_exclusions`: Exclude specific instance names from MRF transparency.  The use of the exclusions feature will be disclosed in nodeinfo as a boolean value.

@ -261,6 +263,14 @@ Notes:

 * `follower_nickname`: The name of the bot account to use for following newly discovered users. Using `followbot` or similar is strongly suggested.

+#### :mrf_emoji
+* `remove_url`: A list of patterns which result in emoji whose URL matches being removed from the message. This will apply to statuses, emoji reactions, and user profiles. Each pattern can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html).
+* `remove_shortcode`: A list of patterns which result in emoji whose shortcode matches being removed from the message. This will apply to statuses, emoji reactions, and user profiles. Each pattern can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html).
+* `federated_timeline_removal_url`: A list of patterns which result in message with emojis whose URLs match being removed from federated timelines (a.k.a unlisted). This will apply only to statuses. Each pattern can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html).
+* `federated_timeline_removal_shortcode`: A list of patterns which result in message with emojis whose shortcodes match being removed from federated timelines (a.k.a unlisted). This will apply only to statuses. Each pattern can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html).
+
+#### :mrf_inline_quote
+* `template`: The template to append to the post. `{url}` will be replaced with the actual link to the quoted post. Default: `<bdi>RT:</bdi> {url}`

 ### :activitypub
 * `unfollow_blocked`: Whether blocks result in people getting unfollowed
--- a/docs/configuration/hardening.md
+++ b/docs/configuration/hardening.md
@ -62,6 +62,20 @@ An additional “Expect-CT” header will be sent with the configured `ct_max_ag

 If you click on a link, your browser’s request to the other site will include from where it is coming from. The “Referrer policy” header tells the browser how and if it should send this information. (see [Referrer policy](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Referrer-Policy))

+### Uploaded media and media proxy
+
+It is STRONGLY RECOMMENDED to serve both the locally-uploaded media and the media proxy from another domain than the domain that Pleroma runs on, if applicable.
+
+```elixir
+config :pleroma, :media_proxy,
+  base_url: "https://some.other.domain"
+
+config :pleroma, Pleroma.Upload,
+  base_url: "https://some.other.domain/media"
+```
+
+See `installation/pleroma-mediaproxy.nginx` for examples on how to configure your media proxy.
+
 ## systemd

 A systemd unit example is provided at `installation/pleroma.service`.
--- a/docs/development/API/differences_in_mastoapi_responses.md
+++ b/docs/development/API/differences_in_mastoapi_responses.md
@ -357,6 +357,122 @@ The message payload consist of:
  - `follower_count`: follower count
  - `following_count`: following count

+### Authenticating via `sec-websocket-protocol` header
+
+Pleroma allows to authenticate via the `sec-websocket-protocol` header, for example, if your access token is `your-access-token`, you can authenticate using the following:
+
+```
+sec-websocket-protocol: your-access-token
+```
+
+### Authenticating after connection via `pleroma:authenticate` event
+
+Pleroma allows to authenticate after connection is established, via the `pleroma:authenticate` event. For example, if your access token is `your-access-token`, you can send the following after the connection is established:
+
+```
+{"type": "pleroma:authenticate", "token": "your-access-token"}
+```
+
+### Response to client-sent events
+
+Pleroma will respond to client-sent events that it recognizes. Supported event types are:
+
+- `subscribe`
+- `unsubscribe`
+- `pleroma:authenticate`
+
+The reply will be in the following format:
+
+```
+{
+  "event": "pleroma:respond",
+  "payload": "{\"type\": \"<type of the client-sent event>\", \"result\": \"<result of the action>\", \"error\": \"<error code>\"}"
+}
+```
+
+Result of the action can be either `success`, `ignored` or `error`. If it is `error`, the `error` property will contain the error code. Otherwise, the `error` property will not be present. Below are some examples:
+
+```
+{
+  "event": "pleroma:respond",
+  "payload": "{\"type\": \"pleroma:authenticate\", \"result\": \"success\"}"
+}
+
+{
+  "event": "pleroma:respond",
+  "payload": "{\"type\": \"subscribe\", \"result\": \"ignored\"}"
+}
+
+{
+  "event": "pleroma:respond",
+  "payload": "{\"type\": \"unsubscribe\", \"result\": \"error\", \"error\": \"bad_topic\"}"
+}
+```
+
+If the sent event is not of a type that Pleroma supports, it will not reply.
+
+### The `stream` attribute of a server-sent event
+
+Technically, this is in Mastodon, but its documentation does nothing to specify its format.
+
+This attribute appears on every event type except `pleroma:respond` and `delete`. It helps clients determine where they should display the new statuses.
+
+The value of the attribute is an array containing one or two elements. The first element is the type of the stream. The second is the identifier related to that specific stream, if applicable.
+
+For the following stream types, there is a second element in the array:
+
+- `list`: The second element is the id of the list, as a string.
+- `hashtag`: The second element is the name of the hashtag.
+- `public:remote:media` and `public:remote`: The second element is the domain of the corresponding instance.
+
+For all other stream types, there is no second element.
+
+Some examples of valid `stream` values:
+
+- `["list", "1"]`: List of id 1.
+- `["hashtag", "mew"]`: The hashtag #mew.
+- `["user:notifications"]`: Notifications for the current user.
+- `["user"]`: Home timeline.
+- `["public:remote", "mew.moe"]`: Public posts from the instance mew.moe .
+
+### The unified streaming endpoint
+
+If you do not specify a stream to connect to when requesting `/api/v1/streaming`, you will enter a connection that subscribes to no streams. After the connection is established, you can authenticate and then subscribe to different streams.
+
+### List of supported streams
+
+Below is a list of supported streams by Pleroma. To make a single-stream WebSocket connection, append the string specified in "Query style" to the streaming endpoint url.
+To subscribe to a stream after the connection is established, merge the JSON object specified in "Subscribe style" with `{"type": "subscribe"}`. To unsubscribe, merge it with `{"type": "unsubscribe"}`.
+
+For example, to receive updates on the list 1, you can connect to `/api/v1/streaming/?stream=list&list=1`, or send
+
+```
+{"type": "subscribe", "stream": "list", "list": "1"}
+```
+
+upon establishing the websocket connection.
+
+To unsubscribe to list 1, send
+
+```
+{"type": "unsubscribe", "stream": "list", "list": "1"}
+```
+
+Note that if you specify a stream that requires a logged-in user in the query string (for example, `user` or `list`), you have to specify the access token when you are trying to establish the connection, i.e. in the query string or via the `sec-websocket-protocol` header.
+
+- `list`
+  - Query style: `?stream=list&list=<id>`
+  - Subscribe style: `{"stream": "list", "list": "<id>"}`
+- `public`, `public:local`, `public:media`, `public:local:media`, `user`, `user:pleroma_chat`, `user:notifications`, `direct`
+  - Query style: `?stream=<stream name>`
+  - Subscribe style: `{"stream": "<stream name>"}`
+- `hashtag`
+  - Query style: `?stream=hashtag&tag=<name>`
+  - Subscribe style: `{"stream": "hashtag", "tag": "<name>"}`
+- `public:remote`, `public:remote:media`
+  - Query style: `?stream=<stream name>&instance=<instance domain>`
+  - Subscribe style: `{"stream": "<stream name>", "instance": "<instance domain>"}`
+
 ## User muting and thread muting

 Both user muting and thread muting can be done for only a certain time by adding an `expires_in` parameter to the API calls and giving the expiration time in seconds.
--- a/docs/development/API/pleroma_api.md
+++ b/docs/development/API/pleroma_api.md
@ -577,6 +577,9 @@ The status posting endpoint takes an additional parameter, `in_reply_to_conversa
  404 if the pack does not exist

 ## `GET /api/v1/pleroma/accounts/:id/scrobbles`
+
+Audio scrobbling in Pleroma is **deprecated**.
+
 ### Requests a list of current and recent Listen activities for an account
 * Method `GET`
 * Authentication: not required
@ -598,6 +601,9 @@ The status posting endpoint takes an additional parameter, `in_reply_to_conversa
 ```

 ## `POST /api/v1/pleroma/scrobble`
+
+Audio scrobbling in Pleroma is **deprecated**.
+
 ### Creates a new Listen activity for an account
 * Method `POST`
 * Authentication: required
--- a/docs/installation/alpine_linux_en.md
+++ b/docs/installation/alpine_linux_en.md
@ -183,6 +183,9 @@ server {
    ...
 }
 ```
+* (Strongly recommended) serve media on another domain
+
+Refer to the [Hardening your instance](../configuration/hardening.md) document on how to serve media on another domain. We STRONGLY RECOMMEND you to do this to minimize attack vectors.

 * Enable and start nginx:

--- a/docs/installation/arch_linux_en.md
+++ b/docs/installation/arch_linux_en.md
@ -173,6 +173,11 @@ sudo ln -s /etc/nginx/sites-available/pleroma.nginx /etc/nginx/sites-enabled/ple
 ```

 * Before starting nginx edit the configuration and change it to your needs (e.g. change servername, change cert paths)
+
+* (Strongly recommended) serve media on another domain
+
+Refer to the [Hardening your instance](../configuration/hardening.md) document on how to serve media on another domain. We STRONGLY RECOMMEND you to do this to minimize attack vectors.
+
 * Enable and start nginx:

 ```shell
--- a/docs/installation/debian_based_en.md
+++ b/docs/installation/debian_based_en.md
@ -4,7 +4,7 @@

 ## Installation

-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.
+This guide will assume you are on Debian 12 (“bookworm”) or later. This guide should also work with Ubuntu 22.04 (“jammy”) 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.

 {! backend/installation/generic_dependencies.include !}

@ -136,6 +136,11 @@ sudo ln -s /etc/nginx/sites-available/pleroma.nginx /etc/nginx/sites-enabled/ple
 ```

 * Before starting nginx edit the configuration and change it to your needs (e.g. change servername, change cert paths)
+
+* (Strongly recommended) serve media on another domain
+
+Refer to the [Hardening your instance](../configuration/hardening.md) document on how to serve media on another domain. We STRONGLY RECOMMEND you to do this to minimize attack vectors.
+
 * Enable and start nginx:

 ```shell
--- a/docs/installation/debian_based_jp.md
+++ b/docs/installation/debian_based_jp.md
@ -1,11 +1,14 @@
 # Pleromaの入れ方
+
+Note: This article is potentially outdated because at this time we may not have people who can speak this language well enough to update it. To see the up-to-date version, which may have significant differences or important caveats of the installation process, look up the English version.
+
 ## 日本語訳について

 この記事は [Installing on Debian based distributions](Installing on Debian based distributions) の日本語訳です。何かがおかしいと思ったら、原文を見てください。

 ## インストール

-このガイドはDebian Stretchを利用することを想定しています。Ubuntu 16.04や18.04でもおそらく動作します。また、ユーザはrootもしくはsudoにより管理者権限を持っていることを前提とします。もし、以下の操作をrootユーザで行う場合は、 `sudo` を無視してください。ただし、`sudo -Hu pleroma` のようにユーザを指定している場合には `su <username> -s $SHELL -c 'command'` を代わりに使ってください。
+このガイドはDebian Bookwormを利用することを想定しています。Ubuntu 22.04でもおそらく動作します。また、ユーザはrootもしくはsudoにより管理者権限を持っていることを前提とします。もし、以下の操作をrootユーザで行う場合は、 `sudo` を無視してください。ただし、`sudo -Hu pleroma` のようにユーザを指定している場合には `su <username> -s $SHELL -c 'command'` を代わりに使ってください。

 ### 必要なソフトウェア

--- a/docs/installation/freebsd_en.md
+++ b/docs/installation/freebsd_en.md
@ -173,6 +173,10 @@ Edit the defaults of `/usr/local/etc/nginx/sites-available/pleroma.nginx`:
 * Change `ssl_certificate_key` to `/var/db/acme/certs/example.tld/example.tld.key`.
 * Change all references of `example.tld` to your instance's domain name.

+#### (Strongly recommended) serve media on another domain
+
+Refer to the [Hardening your instance](../configuration/hardening.md) document on how to serve media on another domain. We STRONGLY RECOMMEND you to do this to minimize attack vectors.
+
 ## Creating a startup script for Pleroma

 Pleroma will need to compile when it initially starts, which typically takes a longer
--- a/docs/installation/gentoo_en.md
+++ b/docs/installation/gentoo_en.md
@ -1,6 +1,8 @@
-# Installing on Gentoo GNU/Linux
+# Manual install on Gentoo GNU/Linux

-{! backend/installation/otp_vs_from_source_source.include !}
+{! backend/installation/otp_vs_from_source.include !}
+
+This guide covers a manual from-source installation. To use the gentoo package, please check the [packaged installation guide for gentoo](./gentoo_otp_en.md).

 ## Installation

@ -227,6 +229,10 @@ Replace all instances of `example.tld` with your instance's public URL. If for w

 Pay special attention to the line that begins with `ssl_ecdh_curve`. It is stongly advised to comment that line out so that OpenSSL will use its full capabilities, and it is also possible you are running OpenSSL 1.0.2 necessitating that you do this.

+* (Strongly recommended) serve media on another domain
+
+Refer to the [Hardening your instance](../configuration/hardening.md) document on how to serve media on another domain. We STRONGLY RECOMMEND you to do this to minimize attack vectors.
+
 * Enable and start nginx:

 ```shell
--- a/docs/installation/gentoo_otp_en.md
+++ b/docs/installation/gentoo_otp_en.md
@ -0,0 +1,207 @@
+# Packaged install on Gentoo Linux
+
+{! backend/installation/otp_vs_from_source.include !}
+
+This guide covers installation via Gentoo provided packaging. A [manual installation guide for gentoo](./gentoo_en.md) is also available.
+
+## Installation
+
+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.
+
+{! backend/installation/generic_dependencies.include !}
+
+### Installing a cron daemon
+
+Gentoo quite pointedly does not come with a cron daemon installed, and as such it is recommended you install one to automate certbot renewals and to allow other system administration tasks to be run automatically. Gentoo has [a whole wide world of cron options](https://wiki.gentoo.org/wiki/Cron) but if you just want A Cron That Works, `emerge --ask virtual/cron` will install the default cron implementation (probably cronie) which will work just fine. For the purpouses of this guide, we will be doing just that.
+
+### Required ebuilds
+
+* `www-apps/pleroma`
+
+#### Optional ebuilds used in this guide
+
+* `www-servers/nginx` (preferred, example configs for other reverse proxies can be found in the repo)
+* `app-crypt/certbot` (or any other ACME client for Let’s Encrypt certificates)
+* `app-crypt/certbot-nginx` (nginx certbot plugin that allows use of the all-powerful `--nginx` flag on certbot)
+* `media-gfx/imagemagick`
+* `media-video/ffmpeg`
+* `media-libs/exiftool`
+
+### Prepare the system
+
+* If you haven't yet done so, add the [Gentoo User Repository (GURU)](https://wiki.gentoo.org/wiki/Project:GURU), where the `www-apps/pleroma` ebuild currently lives at:
+```shell
+ # eselect repository enable guru
+```
+
+* Ensure that you have the latest copy of the Gentoo and GURU ebuilds if you have not synced them yet:
+
+```shell
+ # emaint sync -a
+```
+
+
+* Emerge all required the required and suggested software in one go:
+
+```shell
+ # emerge --ask www-apps/pleroma www-servers/nginx app-crypt/certbot app-crypt/certbot-nginx
+```
+
+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.
+
+### Setup PostgreSQL
+
+[Gentoo  Wiki article](https://wiki.gentoo.org/wiki/PostgreSQL) as well as [PostgreSQL QuickStart](https://wiki.gentoo.org/wiki/PostgreSQL/QuickStart) might be worth a quick glance, as the way Gentoo handles postgres is slightly unusual, with built in capability to have two different databases running for testing and live or whatever other purpouse. While it is still straightforward to install, it does mean that the version numbers used in this guide might change for future updates, so keep an eye out for the output you get from `emerge` to ensure you are using the correct ones.
+
+* Initialize the database cluster
+
+The output from emerging postgresql should give you a command for initializing the postgres database. The default slot should be indicated in this command, ensure that it matches the command below.
+
+```shell
+ # emerge --config dev-db/postgresql:11
+```
+
+### Install media / graphics packages (optional)
+
+See [Optional software packages needed for specific functionality](optional/media_graphics_packages.md) for details.
+
+```shell
+# emerge --ask media-video/ffmpeg media-gfx/imagemagick media-libs/exiftool
+```
+
+### Setup PleromaBE
+
+* Generate the configuration:
+
+```shell
+ # pleroma_ctl instance gen --output /etc/pleroma/config.exs --output-psql /tmp/setup_db.psql"
+```
+
+* Create the PostgreSQL database
+
+```shell
+ # sudo -u postgres -s $SHELL -lc "psql -f /tmp/setup_db.psql"
+```
+
+* Now run the database migration:
+
+```shell
+ # pleroma_ctl migrate
+```
+
+* Optional: If you have installed RUM indexes (`dev-db/rum`) you also need to run:
+```
+ # sudo -Hu pleroma "pleroma_ctl migrate --migrations-path priv/repo/optional_migrations/rum_indexing/"
+```
+
+* Now you can start Pleroma already and add it in the default runlevel
+
+```shell
+ # rc-service pleroma start
+ # rc-update add pleroma default
+```
+
+It probably won't work over the public internet quite yet, however, as we still need to set up a web server to proxy to the pleroma application, as well as configure SSL.
+
+### Finalize installation
+
+Assuming you want to open your newly installed federated social network to, well, the federation, you should run nginx or some other webserver/proxy in front of Pleroma. It is also a good idea to set up Pleroma to run as a system service.
+
+#### Nginx
+
+* Install nginx, if not already done:
+
+```shell
+ # emerge --ask www-servers/nginx
+```
+
+* Create directories for available and enabled sites:
+
+```shell
+ # mkdir -p /etc/nginx/sites-{available,enabled}
+```
+
+* Append the following line at the end of the `http` block in `/etc/nginx/nginx.conf`:
+
+```Nginx
+include sites-enabled/*;
+```
+
+* Setup your SSL cert, using your method of choice or certbot. If using certbot, install it if you haven't already:
+
+```shell
+ # emerge --ask app-crypt/certbot app-crypt/certbot-nginx
+```
+
+and then set it up:
+
+```shell
+ # mkdir -p /var/lib/letsencrypt/
+ # certbot certonly --email <your@emailaddress> -d <yourdomain> --standalone
+```
+
+If that doesn't work the first time, add `--dry-run` to further attempts to avoid being ratelimited as you identify the issue, and do not remove it until the dry run succeeds. If that doesn’t work, make sure, that nginx is not already running. If it still doesn’t work, try setting up nginx first (change ssl “on” to “off” and try again). Often the answer to issues with certbot is to use the `--nginx` flag once you have nginx up and running.
+
+If you are using any additional subdomains, such as for a media proxy, you can re-run the same command with the subdomain in question. When it comes time to renew later, you will not need to run multiple times for each domain, one renew will handle it.
+
+---
+
+* Copy the example nginx configuration and activate it:
+
+```shell
+ # cp /opt/pleroma/installation/pleroma.nginx /etc/nginx/sites-available/
+ # ln -s /etc/nginx/sites-available/pleroma.nginx /etc/nginx/sites-enabled/pleroma.nginx
+```
+
+* Take some time to ensure that your nginx config is correct
+
+Replace all instances of `example.tld` with your instance's public URL. If for whatever reason you made changes to the port that your pleroma app runs on, be sure that is reflected in your configuration.
+
+Pay special attention to the line that begins with `ssl_ecdh_curve`. It is stongly advised to comment that line out so that OpenSSL will use its full capabilities, and it is also possible you are running OpenSSL 1.0.2 necessitating that you do this.
+
+* Enable and start nginx:
+
+```shell
+ # rc-update add nginx default
+ # /etc/init.d/nginx start
+```
+
+If you are using certbot, it is HIGHLY recommend you set up a cron job that renews your certificate, and that you install the suggested `certbot-nginx` plugin. If you don't do these things, you only have yourself to blame when your instance breaks suddenly because you forgot about it.
+
+First, ensure that the command you will be installing into your crontab works.
+
+```shell
+ # /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`.
+
+Now, run crontab as a superuser with `crontab -e` or `sudo crontab -e` as appropriate, and add the following line to your cron:
+
+```cron
+0 0 1 * * /usr/bin/certbot renew --nginx
+```
+
+This will run certbot on the first of the month at midnight. If you'd rather run more frequently, it's not a bad idea, feel free to go for it.
+
+#### Other webserver/proxies
+
+If you would like to use other webservers or proxies, there are example configurations for some popular alternatives in `/opt/pleroma/installation/`. You can, of course, check out [the Gentoo wiki](https://wiki.gentoo.org) for more information on installing and configuring said alternatives.
+
+#### Create your first user
+
+If your instance is up and running, you can create your first user with administrative rights with the following task:
+
+```shell
+pleroma$ pleroma_ctl user new <username> <your@emailaddress> --admin
+```
+
+#### Further reading
+
+{! backend/installation/further_reading.include !}
+
+## Questions
+
+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/migrating_from_source_otp_en.md
+++ b/docs/installation/migrating_from_source_otp_en.md
@ -86,26 +86,26 @@ export FLAVOUR="amd64-musl"

 # Clone the release build into a temporary directory and unpack it
 # Replace `stable` with `unstable` if you want to run the unstable branch
-su pleroma -s $SHELL -lc "
+sudo -Hu pleroma "
 curl 'https://git.pleroma.social/api/v4/projects/2/jobs/artifacts/stable/download?job=$FLAVOUR' -o /tmp/pleroma.zip
 unzip /tmp/pleroma.zip -d /tmp/
 "

 # Move the release to the home directory and delete temporary files
-su pleroma -s $SHELL -lc "
+sudo -Hu pleroma "
 mv /tmp/release/* ~pleroma/
 rmdir /tmp/release
 rm /tmp/pleroma.zip
 "

 # Start the instance to verify that everything is working as expected
-su pleroma -s $SHELL -lc "./bin/pleroma daemon"
+sudo -Hu pleroma "./bin/pleroma daemon"

 # Wait for about 20 seconds and query the instance endpoint, if it shows your uri, name and email correctly, you are configured correctly
 sleep 20 && curl http://localhost:4000/api/v1/instance

 # Stop the instance
-su pleroma -s $SHELL -lc "./bin/pleroma stop"
+sudo -Hu pleroma "./bin/pleroma stop"
 ```

 ## Setting up a system service
--- a/docs/installation/netbsd_en.md
+++ b/docs/installation/netbsd_en.md
@ -123,6 +123,10 @@ Edit the defaults:
 * Change `ssl_certificate_key` to `/etc/nginx/tls/key`.
 * Change `example.tld` to your instance's domain name.

+### (Strongly recommended) serve media on another domain
+
+Refer to the [Hardening your instance](../configuration/hardening.md) document on how to serve media on another domain. We STRONGLY RECOMMEND you to do this to minimize attack vectors.
+
 ## Configuring acme.sh

 We'll be using acme.sh in Stateless Mode for TLS certificate renewal.
--- a/docs/installation/openbsd_en.md
+++ b/docs/installation/openbsd_en.md
@ -195,6 +195,10 @@ rcctl enable relayd
 rcctl start relayd
 ```

+##### (Strongly recommended) serve media on another domain
+
+Refer to the [Hardening your instance](../configuration/hardening.md) document on how to serve media on another domain. We STRONGLY RECOMMEND you to do this to minimize attack vectors.
+
 #### pf
 Enabling and configuring pf is highly recommended.
 In /etc/pf.conf, insert the following configuration:
--- a/docs/installation/openbsd_fi.md
+++ b/docs/installation/openbsd_fi.md
@ -1,5 +1,7 @@
 # Pleroman asennus OpenBSD:llä

+Note: This article is potentially outdated because at this time we may not have people who can speak this language well enough to update it. To see the up-to-date version, which may have significant differences or important caveats of the installation process, look up the English version.
+
 Tarvitset:
 * Oman domainin
 * OpenBSD 6.3 -serverin
--- a/docs/installation/optional/media_graphics_packages.md
+++ b/docs/installation/optional/media_graphics_packages.md
@ -1,9 +1,10 @@
 # Optional software packages needed for specific functionality

 For specific Pleroma functionality (which is disabled by default) some or all of the below packages are required:
-    * `ImageMagic`
-    * `ffmpeg`
-    * `exiftool`
+
+* `ImageMagic`
+* `ffmpeg`
+* `exiftool`
  
 Please refer to documentation in `docs/installation` on how to install them on specific OS.
  
@ -14,20 +15,23 @@ Note: the packages are not required with the current default settings of Pleroma
 `ImageMagick` is a set of tools to create, edit, compose, or convert bitmap images.

 It is required for the following Pleroma features:
-    * `Pleroma.Upload.Filters.Mogrify`, `Pleroma.Upload.Filters.Mogrifun` upload filters (related config: `Plaroma.Upload/filters` in `config/config.exs`)
-    * Media preview proxy for still images (related config: `media_preview_proxy/enabled` in `config/config.exs`)
+
+* `Pleroma.Upload.Filters.Mogrify`, `Pleroma.Upload.Filters.Mogrifun` upload filters (related config: `Plaroma.Upload/filters` in `config/config.exs`)
+* Media preview proxy for still images (related config: `media_preview_proxy/enabled` in `config/config.exs`)
  
 ## `ffmpeg`

 `ffmpeg` is software to record, convert and stream audio and video.

 It is required for the following Pleroma features:
-    * Media preview proxy for videos (related config: `media_preview_proxy/enabled` in `config/config.exs`)
+
+* Media preview proxy for videos (related config: `media_preview_proxy/enabled` in `config/config.exs`)

 ## `exiftool`

 `exiftool` is media files metadata reader/writer.

 It is required for the following Pleroma features:
-    * `Pleroma.Upload.Filters.Exiftool.StripLocation` upload filter (related config: `Plaroma.Upload/filters` in `config/config.exs`)
-    * `Pleroma.Upload.Filters.Exiftool.ReadDescription` upload filter (related config: `Plaroma.Upload/filters` in `config/config.exs`)
+
+* `Pleroma.Upload.Filters.Exiftool.StripLocation` upload filter (related config: `Plaroma.Upload/filters` in `config/config.exs`)
+* `Pleroma.Upload.Filters.Exiftool.ReadDescription` upload filter (related config: `Plaroma.Upload/filters` in `config/config.exs`)
--- a/docs/installation/otp_en.md
+++ b/docs/installation/otp_en.md
@ -115,13 +115,13 @@ adduser --system --shell  /bin/false --home /opt/pleroma pleroma
 export FLAVOUR="amd64-musl"

 # Clone the release build into a temporary directory and unpack it
-su pleroma -s $SHELL -lc "
+sudo -Hu pleroma "
 curl 'https://git.pleroma.social/api/v4/projects/2/jobs/artifacts/stable/download?job=$FLAVOUR' -o /tmp/pleroma.zip
 unzip /tmp/pleroma.zip -d /tmp/
 "

 # Move the release to the home directory and delete temporary files
-su pleroma -s $SHELL -lc "
+sudo -Hu pleroma "
 mv /tmp/release/* /opt/pleroma
 rmdir /tmp/release
 rm /tmp/pleroma.zip
@ -142,25 +142,25 @@ mkdir -p /etc/pleroma
 chown -R pleroma /etc/pleroma

 # Run the config generator
-su pleroma -s $SHELL -lc "./bin/pleroma_ctl instance gen --output /etc/pleroma/config.exs --output-psql /tmp/setup_db.psql"
+sudo -Hu pleroma "./bin/pleroma_ctl instance gen --output /etc/pleroma/config.exs --output-psql /tmp/setup_db.psql"

 # Create the postgres database
-su postgres -s $SHELL -lc "psql -f /tmp/setup_db.psql"
+sudo -u postgres -s $SHELL -lc "psql -f /tmp/setup_db.psql"

 # Create the database schema
-su pleroma -s $SHELL -lc "./bin/pleroma_ctl migrate"
+sudo -Hu pleroma "./bin/pleroma_ctl migrate"

 # If you have installed RUM indexes uncommend and run
-# su pleroma -s $SHELL -lc "./bin/pleroma_ctl migrate --migrations-path priv/repo/optional_migrations/rum_indexing/"
+# sudo -Hu pleroma "./bin/pleroma_ctl migrate --migrations-path priv/repo/optional_migrations/rum_indexing/"

 # Start the instance to verify that everything is working as expected
-su pleroma -s $SHELL -lc "./bin/pleroma daemon"
+sudo -Hu pleroma "./bin/pleroma daemon"

 # Wait for about 20 seconds and query the instance endpoint, if it shows your uri, name and email correctly, you are configured correctly
 sleep 20 && curl http://localhost:4000/api/v1/instance

 # Stop the instance
-su pleroma -s $SHELL -lc "./bin/pleroma stop"
+sudo -Hu pleroma "./bin/pleroma stop"
 ```

 ### Setting up nginx and getting Let's Encrypt SSL certificaties
@ -198,6 +198,10 @@ $EDITOR path-to-nginx-config
 # Verify that the config is valid
 nginx -t
 ```
+#### (Strongly recommended) serve media on another domain
+
+Refer to the [Hardening your instance](../configuration/hardening.md) document on how to serve media on another domain. We STRONGLY RECOMMEND you to do this to minimize attack vectors.
+
 #### Start nginx

 === "Alpine"
--- a/docs/installation/otp_vs_from_source.include
+++ b/docs/installation/otp_vs_from_source.include
@ -1,3 +1,8 @@
-## OTP releases vs from-source installations
+## Packaged (OTP) installation vs Manual (from-source) installations

-There are two ways to install Pleroma. You can use OTP releases or do a from-source installation. OTP releases are as close as you can get to binary releases with Erlang/Elixir. The release is self-contained, and provides everything needed to boot it, it is easily administered via the provided shell script to open up a remote console, start/stop/restart the release, start in the background, send remote commands, and more. With from source installations you install Pleroma from source, meaning you have to install certain dependencies like Erlang+Elixir and compile Pleroma yourself.
+There is multiple ways to install Pleroma.
+<dl>
+<dt>Distro-provided packages</dt><dd>This is the recommended method, where you can get the strongest compatibility guarantees and the best dependency-management</dd>
+<dt>Pleroma-provided OTP binaries</dt><dd>Intended as fallback for Alpine/Debian-compatible systems lacking a proper Pleroma package, they are heavier than proper distro packages as they also contain Erlang/Elixir and can break after system updates</dd>
+<dt>Manual from-source installation</dt><dd>Needs build-dependencies to be installed and manual updates+rebuilds. Allows for easier source-customisations.</dd>
+</dl>
--- a/docs/installation/otp_vs_from_source_source.include
+++ b/docs/installation/otp_vs_from_source_source.include
@ -1,3 +1,3 @@
 {! backend/installation/otp_vs_from_source.include !}

-This guide covers a from-source installation. To install using OTP releases, please check out [the OTP guide](./otp_en.md).
+This guide covers a manual from-source installation. To install using OTP releases, please check for the presence of a distro package, failing that you can use [Pleroma-provided OTP binaries](./otp_en.md).
--- a/installation/init.d/pleroma
+++ b/installation/init.d/pleroma
@ -8,6 +8,7 @@ pidfile="/var/run/pleroma.pid"
 directory=/opt/pleroma
 healthcheck_delay=60
 healthcheck_timer=30
+no_new_privs="yes"

 : ${pleroma_port:-4000}

--- a/installation/pleroma-mediaproxy.nginx
+++ b/installation/pleroma-mediaproxy.nginx
@ -0,0 +1,97 @@
+# This file is for those who want to serve uploaded media and media proxy over
+# another domain. This is STRONGLY RECOMMENDED.
+# This is meant to be used ALONG WITH `pleroma.nginx`.
+
+# If this is a new instance, replace the `location ~ ^/(media|proxy)` section in
+# `pleroma.nginx` with the following to completely disable access to media from the main domain:
+# location ~ ^/(media|proxy) {
+#     return 404;
+# }
+#
+# If you are configuring an existing instance to use another domain
+# for media, you will want to keep redirecting all existing local media to the new domain
+# so already-uploaded media will not break.
+# Replace the `location ~ ^/(media|proxy)` section in `pleroma.nginx` with the following:
+#
+# location /media {
+#     return 301 https://some.other.domain$request_uri;
+# }
+#
+# location /proxy {
+#     return 404;
+# }
+
+server {
+    server_name    some.other.domain;
+
+    listen         80;
+    listen         [::]:80;
+
+    # Uncomment this if you need to use the 'webroot' method with certbot. Make sure
+    # that the directory exists and that it is accessible by the webserver. If you followed
+    # the guide, you already ran 'mkdir -p /var/lib/letsencrypt' to create the folder.
+    # You may need to load this file with the ssl server block commented out, run certbot
+    # to get the certificate, and then uncomment it.
+    #
+    # location ~ /\.well-known/acme-challenge {
+    #     root /var/lib/letsencrypt/;
+    # }
+    location / {
+      return         301 https://$server_name$request_uri;
+    }
+}
+
+server {
+    server_name some.other.domain;
+
+    listen 443 ssl http2;
+    listen [::]:443 ssl http2;
+    ssl_session_timeout 1d;
+    ssl_session_cache shared:MozSSL:10m;  # about 40000 sessions
+    ssl_session_tickets off;
+
+    ssl_trusted_certificate   /etc/letsencrypt/live/some.other.domain/chain.pem;
+    ssl_certificate           /etc/letsencrypt/live/some.other.domain/fullchain.pem;
+    ssl_certificate_key       /etc/letsencrypt/live/some.other.domain/privkey.pem;
+
+    ssl_protocols TLSv1.2 TLSv1.3;
+    ssl_ciphers "ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4";
+    ssl_prefer_server_ciphers off;
+    # In case of an old server with an OpenSSL version of 1.0.2 or below,
+    # leave only prime256v1 or comment out the following line.
+    ssl_ecdh_curve X25519:prime256v1:secp384r1:secp521r1;
+    ssl_stapling on;
+    ssl_stapling_verify on;
+
+    gzip_vary on;
+    gzip_proxied any;
+    gzip_comp_level 6;
+    gzip_buffers 16 8k;
+    gzip_http_version 1.1;
+    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript application/activity+json application/atom+xml;
+
+    # the nginx default is 1m, not enough for large media uploads
+    client_max_body_size 16m;
+    ignore_invalid_headers off;
+
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
+    proxy_set_header Host $http_host;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+
+    location / { return 404; }
+
+    location ~ ^/(media|proxy) {
+        proxy_cache        pleroma_media_cache;
+        slice              1m;
+        proxy_cache_key    $host$uri$is_args$args$slice_range;
+        proxy_set_header   Range $slice_range;
+        proxy_cache_valid  200 206 301 304 1h;
+        proxy_cache_lock   on;
+        proxy_ignore_client_abort on;
+        proxy_buffering    on;
+        chunked_transfer_encoding on;
+        proxy_pass         http://phoenix;
+    }
+}
--- a/lib/mix/tasks/pleroma/instance.ex
+++ b/lib/mix/tasks/pleroma/instance.ex
@ -266,12 +266,20 @@ defmodule Mix.Tasks.Pleroma.Instance do
      config_dir = Path.dirname(config_path)
      psql_dir = Path.dirname(psql_path)

+      # Note: Distros requiring group read (0o750) on those directories should
+      # pre-create the directories.
      [config_dir, psql_dir, static_dir, uploads_dir]
      |> Enum.reject(&File.exists?/1)
-      |> Enum.map(&File.mkdir_p!/1)
+      |> Enum.each(fn dir ->
+        File.mkdir_p!(dir)
+        File.chmod!(dir, 0o700)
+      end)

      shell_info("Writing config to #{config_path}.")

+      # Sadly no fchmod(2) equivalent in Elixir…
+      File.touch!(config_path)
+      File.chmod!(config_path, 0o640)
      File.write(config_path, result_config)
      shell_info("Writing the postgres script to #{psql_path}.")
      File.write(psql_path, result_psql)
@ -290,8 +298,7 @@ defmodule Mix.Tasks.Pleroma.Instance do
    else
      shell_error(
        "The task would have overwritten the following files:\n" <>
-          (Enum.map(will_overwrite, &"- #{&1}\n") |> Enum.join("")) <>
-          "Rerun with `--force` to overwrite them."
+          Enum.map_join(will_overwrite, &"- #{&1}\n") <> "Rerun with `--force` to overwrite them."
      )
    end
  end
--- a/lib/pleroma/config/release_runtime_provider.ex
+++ b/lib/pleroma/config/release_runtime_provider.ex
@ -20,6 +20,20 @@ defmodule Pleroma.Config.ReleaseRuntimeProvider do

    with_runtime_config =
      if File.exists?(config_path) do
+        # <https://git.pleroma.social/pleroma/pleroma/-/issues/3135>
+        %File.Stat{mode: mode} = File.lstat!(config_path)
+
+        if Bitwise.band(mode, 0o007) > 0 do
+          raise "Configuration at #{config_path} has world-permissions, execute the following: chmod o= #{config_path}"
+        end
+
+        if Bitwise.band(mode, 0o020) > 0 do
+          raise "Configuration at #{config_path} has group-wise write permissions, execute the following: chmod g-w #{config_path}"
+        end
+
+        # Note: Elixir doesn't provides a getuid(2)
+        # so cannot forbid group-read only when config is owned by us
+
        runtime_config = Config.Reader.read!(config_path)

        with_defaults
--- a/lib/pleroma/constants.ex
+++ b/lib/pleroma/constants.ex
@ -42,6 +42,18 @@ defmodule Pleroma.Constants do
    ]
  )

+  const(status_object_types,
+    do: [
+      "Note",
+      "Question",
+      "Audio",
+      "Video",
+      "Event",
+      "Article",
+      "Page"
+    ]
+  )
+
  const(updatable_object_types,
    do: [
      "Note",
@ -69,4 +81,21 @@ defmodule Pleroma.Constants do
  const(mime_regex,
    do: ~r/^[^[:cntrl:] ()<>@,;:\\"\/\[\]?=]+\/[^[:cntrl:] ()<>@,;:\\"\/\[\]?=]+(; .*)?$/
  )
+
+  const(upload_object_types, do: ["Document", "Image"])
+
+  const(activity_json_canonical_mime_type,
+    do: "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\""
+  )
+
+  const(activity_json_mime_types,
+    do: [
+      "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"",
+      "application/activity+json"
+    ]
+  )
+
+  const(public_streams,
+    do: ["public", "public:local", "public:media", "public:local:media"]
+  )
 end
--- a/lib/pleroma/ecto_enums.ex
+++ b/lib/pleroma/ecto_enums.ex
@ -27,3 +27,11 @@ defenum(Pleroma.DataMigration.State,
  failed: 4,
  manual: 5
 )
+
+defenum(Pleroma.User.Backup.State,
+  pending: 1,
+  running: 2,
+  complete: 3,
+  failed: 4,
+  invalid: 5
+)
--- a/lib/pleroma/ecto_type/activity_pub/object_validators/bare_uri.ex
+++ b/lib/pleroma/ecto_type/activity_pub/object_validators/bare_uri.ex
@ -0,0 +1,23 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.EctoType.ActivityPub.ObjectValidators.BareUri do
+  use Ecto.Type
+
+  def type, do: :string
+
+  def cast(uri) when is_binary(uri) do
+    case URI.parse(uri) do
+      %URI{scheme: nil} -> :error
+      %URI{} -> {:ok, uri}
+      _ -> :error
+    end
+  end
+
+  def cast(_), do: :error
+
+  def dump(data), do: {:ok, data}
+
+  def load(data), do: {:ok, data}
+end
--- a/lib/pleroma/emoji/pack.ex
+++ b/lib/pleroma/emoji/pack.ex
@ -285,6 +285,7 @@ defmodule Pleroma.Emoji.Pack do

  @spec load_pack(String.t()) :: {:ok, t()} | {:error, :file.posix()}
  def load_pack(name) do
+    name = Path.basename(name)
    pack_file = Path.join([emoji_path(), name, "pack.json"])

    with {:ok, _} <- File.stat(pack_file),
--- a/lib/pleroma/formatter.ex
+++ b/lib/pleroma/formatter.ex
@ -124,7 +124,7 @@ defmodule Pleroma.Formatter do
  end

  def markdown_to_html(text) do
-    Earmark.as_html!(text, %Earmark.Options{compact_output: true})
+    Earmark.as_html!(text, %Earmark.Options{compact_output: true, smartypants: false})
  end

  def html_escape({text, mentions, hashtags}, type) do
--- a/lib/pleroma/instances/instance.ex
+++ b/lib/pleroma/instances/instance.ex
@ -7,6 +7,7 @@ defmodule Pleroma.Instances.Instance do

  alias Pleroma.Instances
  alias Pleroma.Instances.Instance
+  alias Pleroma.Maps
  alias Pleroma.Repo
  alias Pleroma.User
  alias Pleroma.Workers.BackgroundWorker
@ -24,6 +25,14 @@ defmodule Pleroma.Instances.Instance do
    field(:favicon, :string)
    field(:favicon_updated_at, :naive_datetime)

+    embeds_one :metadata, Pleroma.Instances.Metadata, primary_key: false do
+      field(:software_name, :string)
+      field(:software_version, :string)
+      field(:software_repository, :string)
+    end
+
+    field(:metadata_updated_at, :utc_datetime)
+
    timestamps()
  end

@ -31,11 +40,17 @@ defmodule Pleroma.Instances.Instance do

  def changeset(struct, params \\ %{}) do
    struct
-    |> cast(params, [:host, :unreachable_since, :favicon, :favicon_updated_at])
+    |> cast(params, __schema__(:fields) -- [:metadata])
+    |> cast_embed(:metadata, with: &metadata_changeset/2)
    |> validate_required([:host])
    |> unique_constraint(:host)
  end

+  def metadata_changeset(struct, params \\ %{}) do
+    struct
+    |> cast(params, [:software_name, :software_version, :software_repository])
+  end
+
  def filter_reachable([]), do: %{}

  def filter_reachable(urls_or_hosts) when is_list(urls_or_hosts) do
@ -198,6 +213,89 @@ defmodule Pleroma.Instances.Instance do
    end
  end

+  def get_or_update_metadata(%URI{host: host} = instance_uri) do
+    existing_record = Repo.get_by(Instance, %{host: host})
+    now = NaiveDateTime.utc_now()
+
+    if existing_record && existing_record.metadata_updated_at &&
+         NaiveDateTime.diff(now, existing_record.metadata_updated_at) < 86_400 do
+      existing_record.metadata
+    else
+      metadata = scrape_metadata(instance_uri)
+
+      if existing_record do
+        existing_record
+        |> changeset(%{metadata: metadata, metadata_updated_at: now})
+        |> Repo.update()
+      else
+        %Instance{}
+        |> changeset(%{host: host, metadata: metadata, metadata_updated_at: now})
+        |> Repo.insert()
+      end
+
+      metadata
+    end
+  end
+
+  defp get_nodeinfo_uri(well_known) do
+    links = Map.get(well_known, "links", [])
+
+    nodeinfo21 =
+      Enum.find(links, &(&1["rel"] == "http://nodeinfo.diaspora.software/ns/schema/2.1"))["href"]
+
+    nodeinfo20 =
+      Enum.find(links, &(&1["rel"] == "http://nodeinfo.diaspora.software/ns/schema/2.0"))["href"]
+
+    cond do
+      is_binary(nodeinfo21) -> {:ok, nodeinfo21}
+      is_binary(nodeinfo20) -> {:ok, nodeinfo20}
+      true -> {:error, :no_links}
+    end
+  end
+
+  defp scrape_metadata(%URI{} = instance_uri) do
+    try do
+      with {_, true} <- {:reachable, reachable?(instance_uri.host)},
+           {:ok, %Tesla.Env{body: well_known_body}} <-
+             instance_uri
+             |> URI.merge("/.well-known/nodeinfo")
+             |> to_string()
+             |> Pleroma.HTTP.get([{"accept", "application/json"}]),
+           {:ok, well_known_json} <- Jason.decode(well_known_body),
+           {:ok, nodeinfo_uri} <- get_nodeinfo_uri(well_known_json),
+           {:ok, %Tesla.Env{body: nodeinfo_body}} <-
+             Pleroma.HTTP.get(nodeinfo_uri, [{"accept", "application/json"}]),
+           {:ok, nodeinfo} <- Jason.decode(nodeinfo_body) do
+        # Can extract more metadata from NodeInfo but need to be careful about it's size,
+        # can't just dump the entire thing
+        software = Map.get(nodeinfo, "software", %{})
+
+        %{
+          software_name: software["name"],
+          software_version: software["version"]
+        }
+        |> Maps.put_if_present(:software_repository, software["repository"])
+      else
+        {:reachable, false} ->
+          Logger.debug(
+            "Instance.scrape_metadata(\"#{to_string(instance_uri)}\") ignored unreachable host"
+          )
+
+          nil
+
+        _ ->
+          nil
+      end
+    rescue
+      e ->
+        Logger.warn(
+          "Instance.scrape_metadata(\"#{to_string(instance_uri)}\") error: #{inspect(e)}"
+        )
+
+        nil
+    end
+  end
+
  @doc """
  Deletes all users from an instance in a background task, thus also deleting
  all of those users' activities and notifications.
--- a/lib/pleroma/scheduled_activity.ex
+++ b/lib/pleroma/scheduled_activity.ex
@ -40,7 +40,11 @@ defmodule Pleroma.ScheduledActivity do
         %{changes: %{params: %{"media_ids" => media_ids} = params}} = changeset
       )
       when is_list(media_ids) do
-    media_attachments = Utils.attachments_from_ids(%{media_ids: media_ids})
+    media_attachments =
+      Utils.attachments_from_ids(
+        %{media_ids: media_ids},
+        User.get_cached_by_id(changeset.data.user_id)
+      )

    params =
      params
--- a/lib/pleroma/user.ex
+++ b/lib/pleroma/user.ex
@ -124,7 +124,6 @@ defmodule Pleroma.User do
    field(:domain_blocks, {:array, :string}, default: [])
    field(:is_active, :boolean, default: true)
    field(:no_rich_text, :boolean, default: false)
-    field(:ap_enabled, :boolean, default: false)
    field(:is_moderator, :boolean, default: false)
    field(:is_admin, :boolean, default: false)
    field(:show_role, :boolean, default: true)
@ -488,7 +487,6 @@ defmodule Pleroma.User do
        :nickname,
        :public_key,
        :avatar,
-        :ap_enabled,
        :banner,
        :is_locked,
        :last_refreshed_at,
@ -1061,11 +1059,7 @@ defmodule Pleroma.User do
  end

  def maybe_direct_follow(%User{} = follower, %User{} = followed) do
-    if not ap_enabled?(followed) do
-      follow(follower, followed)
-    else
-      {:ok, follower, followed}
-    end
+    {:ok, follower, followed}
  end

  @doc "A mass follow for local users. Respects blocks in both directions but does not create activities."
@ -1898,7 +1892,6 @@ defmodule Pleroma.User do
      confirmation_token: nil,
      domain_blocks: [],
      is_active: false,
-      ap_enabled: false,
      is_moderator: false,
      is_admin: false,
      mascot: nil,
@ -2151,10 +2144,6 @@ defmodule Pleroma.User do
    end
  end

-  def ap_enabled?(%User{local: true}), do: true
-  def ap_enabled?(%User{ap_enabled: ap_enabled}), do: ap_enabled
-  def ap_enabled?(_), do: false
-
  @doc "Gets or fetch a user by uri or nickname."
  @spec get_or_fetch(String.t()) :: {:ok, User.t()} | {:error, String.t()}
  def get_or_fetch("http://" <> _host = uri), do: get_or_fetch_by_ap_id(uri)
--- a/lib/pleroma/user/backup.ex
+++ b/lib/pleroma/user/backup.ex
@ -9,12 +9,14 @@ defmodule Pleroma.User.Backup do
  import Ecto.Query
  import Pleroma.Web.Gettext

+  require Logger
  require Pleroma.Constants

  alias Pleroma.Activity
  alias Pleroma.Bookmark
  alias Pleroma.Repo
  alias Pleroma.User
+  alias Pleroma.User.Backup.State
  alias Pleroma.Web.ActivityPub.ActivityPub
  alias Pleroma.Web.ActivityPub.Transmogrifier
  alias Pleroma.Web.ActivityPub.UserView
@ -25,6 +27,8 @@ defmodule Pleroma.User.Backup do
    field(:file_name, :string)
    field(:file_size, :integer, default: 0)
    field(:processed, :boolean, default: false)
+    field(:state, State, default: :invalid)
+    field(:processed_number, :integer, default: 0)

    belongs_to(:user, User, type: FlakeId.Ecto.CompatType)

@ -46,7 +50,8 @@ defmodule Pleroma.User.Backup do
    %__MODULE__{
      user_id: user.id,
      content_type: "application/zip",
-      file_name: name
+      file_name: name,
+      state: :pending
    }
  end

@ -109,27 +114,108 @@ defmodule Pleroma.User.Backup do

  def get(id), do: Repo.get(__MODULE__, id)

+  defp set_state(backup, state, processed_number \\ nil) do
+    struct =
+      %{state: state}
+      |> Pleroma.Maps.put_if_present(:processed_number, processed_number)
+
+    backup
+    |> cast(struct, [:state, :processed_number])
+    |> Repo.update()
+  end
+
  def process(%__MODULE__{} = backup) do
-    with {:ok, zip_file} <- export(backup),
+    set_state(backup, :running, 0)
+
+    current_pid = self()
+
+    task =
+      Task.Supervisor.async_nolink(
+        Pleroma.TaskSupervisor,
+        __MODULE__,
+        :do_process,
+        [backup, current_pid]
+      )
+
+    wait_backup(backup, backup.processed_number, task)
+  end
+
+  def do_process(backup, current_pid) do
+    with {:ok, zip_file} <- export(backup, current_pid),
         {:ok, %{size: size}} <- File.stat(zip_file),
         {:ok, _upload} <- upload(backup, zip_file) do
      backup
-      |> cast(%{file_size: size, processed: true}, [:file_size, :processed])
+      |> cast(
+        %{
+          file_size: size,
+          processed: true,
+          state: :complete
+        },
+        [:file_size, :processed, :state]
+      )
      |> Repo.update()
    end
  end

+  defp wait_backup(backup, current_processed, task) do
+    wait_time = Pleroma.Config.get([__MODULE__, :process_wait_time])
+
+    receive do
+      {:progress, new_processed} ->
+        total_processed = current_processed + new_processed
+
+        set_state(backup, :running, total_processed)
+        wait_backup(backup, total_processed, task)
+
+      {:DOWN, _ref, _proc, _pid, reason} ->
+        backup = get(backup.id)
+
+        if reason != :normal do
+          Logger.error("Backup #{backup.id} process ended abnormally: #{inspect(reason)}")
+
+          {:ok, backup} = set_state(backup, :failed)
+
+          cleanup(backup)
+
+          {:error,
+           %{
+             backup: backup,
+             reason: :exit,
+             details: reason
+           }}
+        else
+          {:ok, backup}
+        end
+    after
+      wait_time ->
+        Logger.error(
+          "Backup #{backup.id} timed out after no response for #{wait_time}ms, terminating"
+        )
+
+        Task.Supervisor.terminate_child(Pleroma.TaskSupervisor, task.pid)
+
+        {:ok, backup} = set_state(backup, :failed)
+
+        cleanup(backup)
+
+        {:error,
+         %{
+           backup: backup,
+           reason: :timeout
+         }}
+    end
+  end
+
  @files ['actor.json', 'outbox.json', 'likes.json', 'bookmarks.json']
-  def export(%__MODULE__{} = backup) do
+  def export(%__MODULE__{} = backup, caller_pid) do
    backup = Repo.preload(backup, :user)
-    name = String.trim_trailing(backup.file_name, ".zip")
-    dir = dir(name)
+    dir = backup_tempdir(backup)

    with :ok <- File.mkdir(dir),
-         :ok <- actor(dir, backup.user),
-         :ok <- statuses(dir, backup.user),
-         :ok <- likes(dir, backup.user),
-         :ok <- bookmarks(dir, backup.user),
+         :ok <- actor(dir, backup.user, caller_pid),
+         :ok <- statuses(dir, backup.user, caller_pid),
+         :ok <- likes(dir, backup.user, caller_pid),
+         :ok <- bookmarks(dir, backup.user, caller_pid),
         {:ok, zip_path} <- :zip.create(String.to_charlist(dir <> ".zip"), @files, cwd: dir),
         {:ok, _} <- File.rm_rf(dir) do
      {:ok, to_string(zip_path)}
@ -157,11 +243,12 @@ defmodule Pleroma.User.Backup do
    end
  end

-  defp actor(dir, user) do
+  defp actor(dir, user, caller_pid) do
    with {:ok, json} <-
           UserView.render("user.json", %{user: user})
           |> Map.merge(%{"likes" => "likes.json", "bookmarks" => "bookmarks.json"})
           |> Jason.encode() do
+      send(caller_pid, {:progress, 1})
      File.write(Path.join(dir, "actor.json"), json)
    end
  end
@ -180,47 +267,80 @@ defmodule Pleroma.User.Backup do
    )
  end

-  defp write(query, dir, name, fun) do
+  defp should_report?(num, chunk_size), do: rem(num, chunk_size) == 0
+
+  defp backup_tempdir(backup) do
+    name = String.trim_trailing(backup.file_name, ".zip")
+    dir(name)
+  end
+
+  defp cleanup(backup) do
+    dir = backup_tempdir(backup)
+    File.rm_rf(dir)
+  end
+
+  defp write(query, dir, name, fun, caller_pid) do
    path = Path.join(dir, "#{name}.json")

+    chunk_size = Pleroma.Config.get([__MODULE__, :process_chunk_size])
+
    with {:ok, file} <- File.open(path, [:write, :utf8]),
         :ok <- write_header(file, name) do
      total =
        query
-        |> Pleroma.Repo.chunk_stream(100)
+        |> Pleroma.Repo.chunk_stream(chunk_size, _returns_as = :one, timeout: :infinity)
        |> Enum.reduce(0, fn i, acc ->
-          with {:ok, data} <- fun.(i),
+          with {:ok, data} <-
+                 (try do
+                    fun.(i)
+                  rescue
+                    e -> {:error, e}
+                  end),
               {:ok, str} <- Jason.encode(data),
               :ok <- IO.write(file, str <> ",\n") do
+            if should_report?(acc + 1, chunk_size) do
+              send(caller_pid, {:progress, chunk_size})
+            end
+
            acc + 1
          else
-            _ -> acc
+            {:error, e} ->
+              Logger.warn(
+                "Error processing backup item: #{inspect(e)}\n The item is: #{inspect(i)}"
+              )
+
+              acc
+
+            _ ->
+              acc
          end
        end)

+      send(caller_pid, {:progress, rem(total, chunk_size)})
+
      with :ok <- :file.pwrite(file, {:eof, -2}, "\n],\n  \"totalItems\": #{total}}") do
        File.close(file)
      end
    end
  end

-  defp bookmarks(dir, %{id: user_id} = _user) do
+  defp bookmarks(dir, %{id: user_id} = _user, caller_pid) do
    Bookmark
    |> where(user_id: ^user_id)
    |> join(:inner, [b], activity in assoc(b, :activity))
    |> select([b, a], %{id: b.id, object: fragment("(?)->>'object'", a.data)})
-    |> write(dir, "bookmarks", fn a -> {:ok, a.object} end)
+    |> write(dir, "bookmarks", fn a -> {:ok, a.object} end, caller_pid)
  end

-  defp likes(dir, user) do
+  defp likes(dir, user, caller_pid) do
    user.ap_id
    |> Activity.Queries.by_actor()
    |> Activity.Queries.by_type("Like")
    |> select([like], %{id: like.id, object: fragment("(?)->>'object'", like.data)})
-    |> write(dir, "likes", fn a -> {:ok, a.object} end)
+    |> write(dir, "likes", fn a -> {:ok, a.object} end, caller_pid)
  end

-  defp statuses(dir, user) do
+  defp statuses(dir, user, caller_pid) do
    opts =
      %{}
      |> Map.put(:type, ["Create", "Announce"])
@ -233,10 +353,15 @@ defmodule Pleroma.User.Backup do
    ]
    |> Enum.concat()
    |> ActivityPub.fetch_activities_query(opts)
-    |> write(dir, "outbox", fn a ->
-      with {:ok, activity} <- Transmogrifier.prepare_outgoing(a.data) do
-        {:ok, Map.delete(activity, "@context")}
-      end
-    end)
+    |> write(
+      dir,
+      "outbox",
+      fn a ->
+        with {:ok, activity} <- Transmogrifier.prepare_outgoing(a.data) do
+          {:ok, Map.delete(activity, "@context")}
+        end
+      end,
+      caller_pid
+    )
  end
 end
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@ -455,6 +455,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
    |> maybe_preload_objects(opts)
    |> maybe_preload_bookmarks(opts)
    |> maybe_set_thread_muted_field(opts)
+    |> restrict_unauthenticated(opts[:user])
    |> restrict_blocked(opts)
    |> restrict_blockers_visibility(opts)
    |> restrict_recipients(recipients, opts[:user])
@ -1215,6 +1216,27 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do

  defp restrict_filtered(query, _), do: query

+  defp restrict_unauthenticated(query, nil) do
+    local = Config.restrict_unauthenticated_access?(:activities, :local)
+    remote = Config.restrict_unauthenticated_access?(:activities, :remote)
+
+    cond do
+      local and remote ->
+        from(activity in query, where: false)
+
+      local ->
+        from(activity in query, where: activity.local == false)
+
+      remote ->
+        from(activity in query, where: activity.local == true)
+
+      true ->
+        query
+    end
+  end
+
+  defp restrict_unauthenticated(query, _), do: query
+
  defp exclude_poll_votes(query, %{include_poll_votes: true}), do: query

  defp exclude_poll_votes(query, _) do
@ -1547,7 +1569,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
    %{
      ap_id: data["id"],
      uri: get_actor_url(data["url"]),
-      ap_enabled: true,
      banner: normalize_image(data["image"]),
      fields: fields,
      emoji: emojis,
@ -1668,7 +1689,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
    end
  end

-  def fetch_and_prepare_user_from_ap_id(ap_id, additional \\ []) do
+  defp fetch_and_prepare_user_from_ap_id(ap_id, additional) do
    with {:ok, data} <- Fetcher.fetch_and_contain_remote_object_from_id(ap_id),
         {:ok, data} <- user_data_from_user_object(data, additional) do
      {:ok, maybe_update_follow_information(data)}
@ -1721,6 +1742,11 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
    end)
  end

+  def pin_data_from_featured_collection(obj) do
+    Logger.error("Could not parse featured collection #{inspect(obj)}")
+    %{}
+  end
+
  def fetch_and_prepare_featured_from_ap_id(nil) do
    {:ok, %{}}
  end
@ -1751,24 +1777,20 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
  def make_user_from_ap_id(ap_id, additional \\ []) do
    user = User.get_cached_by_ap_id(ap_id)

-    if user && !User.ap_enabled?(user) do
-      Transmogrifier.upgrade_user_from_ap_id(ap_id)
-    else
-      with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id, additional) do
-        {:ok, _pid} = Task.start(fn -> pinned_fetch_task(data) end)
+    with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id, additional) do
+      {:ok, _pid} = Task.start(fn -> pinned_fetch_task(data) end)

-        if user do
-          user
-          |> User.remote_user_changeset(data)
-          |> User.update_and_set_cache()
-        else
-          maybe_handle_clashing_nickname(data)
+      if user do
+        user
+        |> User.remote_user_changeset(data)
+        |> User.update_and_set_cache()
+      else
+        maybe_handle_clashing_nickname(data)

-          data
-          |> User.remote_user_changeset()
-          |> Repo.insert()
-          |> User.set_cache()
-        end
+        data
+        |> User.remote_user_changeset()
+        |> Repo.insert()
+        |> User.set_cache()
      end
    end
  end
--- a/lib/pleroma/web/activity_pub/builder.ex
+++ b/lib/pleroma/web/activity_pub/builder.ex
@ -217,6 +217,7 @@ defmodule Pleroma.Web.ActivityPub.Builder do
        "tag" => Keyword.values(draft.tags) |> Enum.uniq()
      }
      |> add_in_reply_to(draft.in_reply_to)
+      |> add_quote(draft.quote_post)
      |> Map.merge(draft.extra)

    {:ok, data, []}
@ -232,6 +233,16 @@ defmodule Pleroma.Web.ActivityPub.Builder do
    end
  end

+  defp add_quote(object, nil), do: object
+
+  defp add_quote(object, quote_post) do
+    with %Object{} = quote_object <- Object.normalize(quote_post, fetch: false) do
+      Map.put(object, "quoteUrl", quote_object.data["id"])
+    else
+      _ -> object
+    end
+  end
+
  def chat_message(actor, recipient, content, opts \\ []) do
    basic = %{
      "id" => Utils.generate_object_id(),
--- a/lib/pleroma/web/activity_pub/mrf/emoji_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/emoji_policy.ex
@ -0,0 +1,281 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ActivityPub.MRF.EmojiPolicy do
+  require Pleroma.Constants
+
+  alias Pleroma.Object.Updater
+  alias Pleroma.Web.ActivityPub.MRF.Utils
+
+  @moduledoc "Reject or force-unlisted emojis with certain URLs or names"
+
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy
+
+  defp config_remove_url do
+    Pleroma.Config.get([:mrf_emoji, :remove_url], [])
+  end
+
+  defp config_remove_shortcode do
+    Pleroma.Config.get([:mrf_emoji, :remove_shortcode], [])
+  end
+
+  defp config_unlist_url do
+    Pleroma.Config.get([:mrf_emoji, :federated_timeline_removal_url], [])
+  end
+
+  defp config_unlist_shortcode do
+    Pleroma.Config.get([:mrf_emoji, :federated_timeline_removal_shortcode], [])
+  end
+
+  @impl Pleroma.Web.ActivityPub.MRF.Policy
+  def history_awareness, do: :manual
+
+  @impl Pleroma.Web.ActivityPub.MRF.Policy
+  def filter(%{"type" => type, "object" => %{"type" => objtype} = object} = message)
+      when type in ["Create", "Update"] and objtype in Pleroma.Constants.status_object_types() do
+    with {:ok, object} <-
+           Updater.do_with_history(object, fn object ->
+             {:ok, process_remove(object, :url, config_remove_url())}
+           end),
+         {:ok, object} <-
+           Updater.do_with_history(object, fn object ->
+             {:ok, process_remove(object, :shortcode, config_remove_shortcode())}
+           end),
+         activity <- Map.put(message, "object", object),
+         activity <- maybe_delist(activity) do
+      {:ok, activity}
+    end
+  end
+
+  @impl Pleroma.Web.ActivityPub.MRF.Policy
+  def filter(%{"type" => type} = object) when type in Pleroma.Constants.actor_types() do
+    with object <- process_remove(object, :url, config_remove_url()),
+         object <- process_remove(object, :shortcode, config_remove_shortcode()) do
+      {:ok, object}
+    end
+  end
+
+  @impl Pleroma.Web.ActivityPub.MRF.Policy
+  def filter(%{"type" => "EmojiReact"} = object) do
+    with {:ok, _} <-
+           matched_emoji_checker(config_remove_url(), config_remove_shortcode()).(object) do
+      {:ok, object}
+    else
+      _ ->
+        {:reject, "[EmojiPolicy] Rejected for having disallowed emoji"}
+    end
+  end
+
+  @impl Pleroma.Web.ActivityPub.MRF.Policy
+  def filter(message) do
+    {:ok, message}
+  end
+
+  defp match_string?(string, pattern) when is_binary(pattern) do
+    string == pattern
+  end
+
+  defp match_string?(string, %Regex{} = pattern) do
+    String.match?(string, pattern)
+  end
+
+  defp match_any?(string, patterns) do
+    Enum.any?(patterns, &match_string?(string, &1))
+  end
+
+  defp url_from_tag(%{"icon" => %{"url" => url}}), do: url
+  defp url_from_tag(_), do: nil
+
+  defp url_from_emoji({_name, url}), do: url
+
+  defp shortcode_from_tag(%{"name" => name}) when is_binary(name), do: String.trim(name, ":")
+  defp shortcode_from_tag(_), do: nil
+
+  defp shortcode_from_emoji({name, _url}), do: name
+
+  defp process_remove(object, :url, patterns) do
+    process_remove_impl(object, &url_from_tag/1, &url_from_emoji/1, patterns)
+  end
+
+  defp process_remove(object, :shortcode, patterns) do
+    process_remove_impl(object, &shortcode_from_tag/1, &shortcode_from_emoji/1, patterns)
+  end
+
+  defp process_remove_impl(object, extract_from_tag, extract_from_emoji, patterns) do
+    object =
+      if object["tag"] do
+        Map.put(
+          object,
+          "tag",
+          Enum.filter(
+            object["tag"],
+            fn
+              %{"type" => "Emoji"} = tag ->
+                str = extract_from_tag.(tag)
+
+                if is_binary(str) do
+                  not match_any?(str, patterns)
+                else
+                  true
+                end
+
+              _ ->
+                true
+            end
+          )
+        )
+      else
+        object
+      end
+
+    object =
+      if object["emoji"] do
+        Map.put(
+          object,
+          "emoji",
+          object["emoji"]
+          |> Enum.reduce(%{}, fn {name, url} = emoji, acc ->
+            if not match_any?(extract_from_emoji.(emoji), patterns) do
+              Map.put(acc, name, url)
+            else
+              acc
+            end
+          end)
+        )
+      else
+        object
+      end
+
+    object
+  end
+
+  defp matched_emoji_checker(urls, shortcodes) do
+    fn object ->
+      if any_emoji_match?(object, &url_from_tag/1, &url_from_emoji/1, urls) or
+           any_emoji_match?(
+             object,
+             &shortcode_from_tag/1,
+             &shortcode_from_emoji/1,
+             shortcodes
+           ) do
+        {:matched, nil}
+      else
+        {:ok, %{}}
+      end
+    end
+  end
+
+  defp maybe_delist(%{"object" => object, "to" => to, "type" => "Create"} = activity) do
+    check = matched_emoji_checker(config_unlist_url(), config_unlist_shortcode())
+
+    should_delist? = fn object ->
+      with {:ok, _} <- Pleroma.Object.Updater.do_with_history(object, check) do
+        false
+      else
+        _ -> true
+      end
+    end
+
+    if Pleroma.Constants.as_public() in to and should_delist?.(object) do
+      to = List.delete(to, Pleroma.Constants.as_public())
+      cc = [Pleroma.Constants.as_public() | activity["cc"] || []]
+
+      activity
+      |> Map.put("to", to)
+      |> Map.put("cc", cc)
+    else
+      activity
+    end
+  end
+
+  defp maybe_delist(activity), do: activity
+
+  defp any_emoji_match?(object, extract_from_tag, extract_from_emoji, patterns) do
+    Kernel.||(
+      Enum.any?(
+        object["tag"] || [],
+        fn
+          %{"type" => "Emoji"} = tag ->
+            str = extract_from_tag.(tag)
+
+            if is_binary(str) do
+              match_any?(str, patterns)
+            else
+              false
+            end
+
+          _ ->
+            false
+        end
+      ),
+      (object["emoji"] || [])
+      |> Enum.any?(fn emoji -> match_any?(extract_from_emoji.(emoji), patterns) end)
+    )
+  end
+
+  @impl Pleroma.Web.ActivityPub.MRF.Policy
+  def describe do
+    mrf_emoji =
+      Pleroma.Config.get(:mrf_emoji, [])
+      |> Enum.map(fn {key, value} ->
+        {key, Enum.map(value, &Utils.describe_regex_or_string/1)}
+      end)
+      |> Enum.into(%{})
+
+    {:ok, %{mrf_emoji: mrf_emoji}}
+  end
+
+  @impl Pleroma.Web.ActivityPub.MRF.Policy
+  def config_description do
+    %{
+      key: :mrf_emoji,
+      related_policy: "Pleroma.Web.ActivityPub.MRF.EmojiPolicy",
+      label: "MRF Emoji",
+      description:
+        "Reject or force-unlisted emojis whose URLs or names match a keyword or [Regex](https://hexdocs.pm/elixir/Regex.html).",
+      children: [
+        %{
+          key: :remove_url,
+          type: {:list, :string},
+          description: """
+            A list of patterns which result in emoji whose URL matches being removed from the message. This will apply to statuses, emoji reactions, and user profiles.
+
+            Each pattern can be a string or [Regex](https://hexdocs.pm/elixir/Regex.html) in the format of `~r/PATTERN/`.
+          """,
+          suggestions: ["https://example.org/foo.png", ~r/example.org\/foo/iu]
+        },
+        %{
+          key: :remove_shortcode,
+          type: {:list, :string},
+          description: """
+            A list of patterns which result in emoji whose shortcode matches being removed from the message. This will apply to statuses, emoji reactions, and user profiles.
+
+            Each pattern can be a string or [Regex](https://hexdocs.pm/elixir/Regex.html) in the format of `~r/PATTERN/`.
+          """,
+          suggestions: ["foo", ~r/foo/iu]
+        },
+        %{
+          key: :federated_timeline_removal_url,
+          type: {:list, :string},
+          description: """
+            A list of patterns which result in message with emojis whose URLs match being removed from federated timelines (a.k.a unlisted). This will apply only to statuses.
+
+            Each pattern can be a string or [Regex](https://hexdocs.pm/elixir/Regex.html) in the format of `~r/PATTERN/`.
+          """,
+          suggestions: ["https://example.org/foo.png", ~r/example.org\/foo/iu]
+        },
+        %{
+          key: :federated_timeline_removal_shortcode,
+          type: {:list, :string},
+          description: """
+            A list of patterns which result in message with emojis whose shortcodes match being removed from federated timelines (a.k.a unlisted). This will apply only to statuses.
+
+            Each pattern can be a string or [Regex](https://hexdocs.pm/elixir/Regex.html) in the format of `~r/PATTERN/`.
+          """,
+          suggestions: ["foo", ~r/foo/iu]
+        }
+      ]
+    }
+  end
+end
--- a/lib/pleroma/web/activity_pub/mrf/force_mentions_in_content.ex
+++ b/lib/pleroma/web/activity_pub/mrf/force_mentions_in_content.ex
@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only

 defmodule Pleroma.Web.ActivityPub.MRF.ForceMentionsInContent do
@ -95,11 +95,13 @@ defmodule Pleroma.Web.ActivityPub.MRF.ForceMentionsInContent do
      |> Enum.reject(&is_nil/1)
      |> sort_replied_user(replied_to_user)

-    explicitly_mentioned_uris = extract_mention_uris_from_content(content)
+    explicitly_mentioned_uris =
+      extract_mention_uris_from_content(content)
+      |> MapSet.new()

    added_mentions =
-      Enum.reduce(mention_users, "", fn %User{ap_id: uri} = user, acc ->
-        unless uri in explicitly_mentioned_uris do
+      Enum.reduce(mention_users, "", fn %User{ap_id: ap_id, uri: uri} = user, acc ->
+        if MapSet.disjoint?(MapSet.new([ap_id, uri]), explicitly_mentioned_uris) do
          acc <> Formatter.mention_from_user(user, %{mentions_format: :compact}) <> " "
        else
          acc
--- a/lib/pleroma/web/activity_pub/mrf/inline_quote_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/inline_quote_policy.ex
@ -0,0 +1,78 @@
+# 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.InlineQuotePolicy do
+  @moduledoc "Force a quote line into the message content."
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy
+
+  defp build_inline_quote(template, url) do
+    quote_line = String.replace(template, "{url}", "<a href=\"#{url}\">#{url}</a>")
+
+    "<span class=\"quote-inline\"><br/><br/>#{quote_line}</span>"
+  end
+
+  defp has_inline_quote?(content, quote_url) do
+    cond do
+      # Does the quote URL exist in the content?
+      content =~ quote_url -> true
+      # Does the content already have a .quote-inline span?
+      content =~ "<span class=\"quote-inline\">" -> true
+      # No inline quote found
+      true -> false
+    end
+  end
+
+  defp filter_object(%{"quoteUrl" => quote_url} = object) do
+    content = object["content"] || ""
+
+    if has_inline_quote?(content, quote_url) do
+      object
+    else
+      template = Pleroma.Config.get([:mrf_inline_quote, :template])
+
+      content =
+        if String.ends_with?(content, "</p>"),
+          do:
+            String.trim_trailing(content, "</p>") <>
+              build_inline_quote(template, quote_url) <> "</p>",
+          else: content <> build_inline_quote(template, quote_url)
+
+      Map.put(object, "content", content)
+    end
+  end
+
+  @impl true
+  def filter(%{"object" => %{"quoteUrl" => _} = object} = activity) do
+    {:ok, Map.put(activity, "object", filter_object(object))}
+  end
+
+  @impl true
+  def filter(object), do: {:ok, object}
+
+  @impl true
+  def describe, do: {:ok, %{}}
+
+  @impl Pleroma.Web.ActivityPub.MRF.Policy
+  def history_awareness, do: :auto
+
+  @impl true
+  def config_description do
+    %{
+      key: :mrf_inline_quote,
+      related_policy: "Pleroma.Web.ActivityPub.MRF.InlineQuotePolicy",
+      label: "MRF Inline Quote Policy",
+      type: :group,
+      description: "Force quote url to appear in post content.",
+      children: [
+        %{
+          key: :template,
+          type: :string,
+          description:
+            "The template to append to the post. `{url}` will be replaced with the actual link to the quoted post.",
+          suggestions: ["<bdi>RT:</bdi> {url}"]
+        }
+      ]
+    }
+  end
+end
--- a/lib/pleroma/web/activity_pub/mrf/keyword_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/keyword_policy.ex
@ -5,6 +5,8 @@
 defmodule Pleroma.Web.ActivityPub.MRF.KeywordPolicy do
  require Pleroma.Constants

+  alias Pleroma.Web.ActivityPub.MRF.Utils
+
  @moduledoc "Reject or Word-Replace messages with a keyword or regex"

  @behaviour Pleroma.Web.ActivityPub.MRF.Policy
@ -128,7 +130,6 @@ defmodule Pleroma.Web.ActivityPub.MRF.KeywordPolicy do

  @impl true
  def describe do
-    # This horror is needed to convert regex sigils to strings
    mrf_keyword =
      Pleroma.Config.get(:mrf_keyword, [])
      |> Enum.map(fn {key, value} ->
@ -136,21 +137,12 @@ defmodule Pleroma.Web.ActivityPub.MRF.KeywordPolicy do
         Enum.map(value, fn
           {pattern, replacement} ->
             %{
-               "pattern" =>
-                 if not is_binary(pattern) do
-                   inspect(pattern)
-                 else
-                   pattern
-                 end,
+               "pattern" => Utils.describe_regex_or_string(pattern),
               "replacement" => replacement
             }

           pattern ->
-             if not is_binary(pattern) do
-               inspect(pattern)
-             else
-               pattern
-             end
+             Utils.describe_regex_or_string(pattern)
         end)}
      end)
      |> Enum.into(%{})
--- a/lib/pleroma/web/activity_pub/mrf/quote_to_link_tag_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/quote_to_link_tag_policy.ex
@ -0,0 +1,49 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ActivityPub.MRF.QuoteToLinkTagPolicy do
+  @moduledoc "Force a Link tag for posts quoting another post. (may break outgoing federation of quote posts with older Pleroma versions)"
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy
+
+  alias Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes
+
+  require Pleroma.Constants
+
+  @impl Pleroma.Web.ActivityPub.MRF.Policy
+  def filter(%{"object" => %{"quoteUrl" => _} = object} = activity) do
+    {:ok, Map.put(activity, "object", filter_object(object))}
+  end
+
+  @impl Pleroma.Web.ActivityPub.MRF.Policy
+  def filter(object), do: {:ok, object}
+
+  @impl Pleroma.Web.ActivityPub.MRF.Policy
+  def describe, do: {:ok, %{}}
+
+  @impl Pleroma.Web.ActivityPub.MRF.Policy
+  def history_awareness, do: :auto
+
+  defp filter_object(%{"quoteUrl" => quote_url} = object) do
+    tags = object["tag"] || []
+
+    if Enum.any?(tags, fn tag ->
+         CommonFixes.is_object_link_tag(tag) and tag["href"] == quote_url
+       end) do
+      object
+    else
+      object
+      |> Map.put(
+        "tag",
+        tags ++
+          [
+            %{
+              "type" => "Link",
+              "mediaType" => Pleroma.Constants.activity_json_canonical_mime_type(),
+              "href" => quote_url
+            }
+          ]
+      )
+    end
+  end
+end
--- a/lib/pleroma/web/activity_pub/mrf/utils.ex
+++ b/lib/pleroma/web/activity_pub/mrf/utils.ex
@ -0,0 +1,15 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ActivityPub.MRF.Utils do
+  @spec describe_regex_or_string(String.t() | Regex.t()) :: String.t()
+  def describe_regex_or_string(pattern) do
+    # This horror is needed to convert regex sigils to strings
+    if not is_binary(pattern) do
+      inspect(pattern)
+    else
+      pattern
+    end
+  end
+end
--- a/lib/pleroma/web/activity_pub/object_validators/add_remove_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/add_remove_validator.ex
@ -73,6 +73,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AddRemoveValidator do
  end

  defp maybe_refetch_user(%User{ap_id: ap_id}) do
-    Pleroma.Web.ActivityPub.Transmogrifier.upgrade_user_from_ap_id(ap_id)
+    # Maybe it could use User.get_or_fetch_by_ap_id to avoid refreshing too often
+    User.fetch_by_ap_id(ap_id)
  end
 end
--- a/lib/pleroma/web/activity_pub/object_validators/article_note_page_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/article_note_page_validator.ex
@ -84,6 +84,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.ArticleNotePageValidator do
    |> fix_tag()
    |> fix_replies()
    |> fix_attachments()
+    |> CommonFixes.fix_quote_url()
    |> Transmogrifier.fix_emoji()
    |> Transmogrifier.fix_content_map()
  end
--- a/lib/pleroma/web/activity_pub/object_validators/audio_image_video_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/audio_image_video_validator.ex
@ -99,6 +99,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.AudioImageVideoValidator do
    data
    |> CommonFixes.fix_actor()
    |> CommonFixes.fix_object_defaults()
+    |> CommonFixes.fix_quote_url()
    |> Transmogrifier.fix_emoji()
    |> fix_url()
    |> fix_content()
--- a/lib/pleroma/web/activity_pub/object_validators/common_fields.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/common_fields.ex
@ -27,7 +27,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonFields do
    end
  end

-  # All objects except Answer and CHatMessage
+  # All objects except Answer and ChatMessage
  defmacro object_fields do
    quote bind_quoted: binding() do
      field(:content, :string)
@ -58,7 +58,8 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonFields do
      field(:like_count, :integer, default: 0)
      field(:announcement_count, :integer, default: 0)
      field(:inReplyTo, ObjectValidators.ObjectID)
-      field(:url, ObjectValidators.Uri)
+      field(:quoteUrl, ObjectValidators.ObjectID)
+      field(:url, ObjectValidators.BareUri)

      field(:likes, {:array, ObjectValidators.ObjectID}, default: [])
      field(:announcements, {:array, ObjectValidators.ObjectID}, default: [])
--- a/lib/pleroma/web/activity_pub/object_validators/common_fixes.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/common_fixes.ex
@ -10,6 +10,8 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes do
  alias Pleroma.Web.ActivityPub.Transmogrifier
  alias Pleroma.Web.ActivityPub.Utils

+  require Pleroma.Constants
+
  def cast_and_filter_recipients(message, field, follower_collection, field_fallback \\ []) do
    {:ok, data} = ObjectValidators.Recipients.cast(message[field] || field_fallback)

@ -76,4 +78,48 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes do

    Map.put(data, "to", to)
  end
+
+  def fix_quote_url(%{"quoteUrl" => _quote_url} = data), do: data
+
+  # Fedibird
+  # https://github.com/fedibird/mastodon/commit/dbd7ae6cf58a92ec67c512296b4daaea0d01e6ac
+  def fix_quote_url(%{"quoteUri" => quote_url} = data) do
+    Map.put(data, "quoteUrl", quote_url)
+  end
+
+  # Old Fedibird (bug)
+  # https://github.com/fedibird/mastodon/issues/9
+  def fix_quote_url(%{"quoteURL" => quote_url} = data) do
+    Map.put(data, "quoteUrl", quote_url)
+  end
+
+  # Misskey fallback
+  def fix_quote_url(%{"_misskey_quote" => quote_url} = data) do
+    Map.put(data, "quoteUrl", quote_url)
+  end
+
+  def fix_quote_url(%{"tag" => [_ | _] = tags} = data) do
+    tag = Enum.find(tags, &is_object_link_tag/1)
+
+    if not is_nil(tag) do
+      data
+      |> Map.put("quoteUrl", tag["href"])
+    else
+      data
+    end
+  end
+
+  def fix_quote_url(data), do: data
+
+  # https://codeberg.org/fediverse/fep/src/branch/main/fep/e232/fep-e232.md
+  def is_object_link_tag(%{
+        "type" => "Link",
+        "mediaType" => media_type,
+        "href" => href
+      })
+      when media_type in Pleroma.Constants.activity_json_mime_types() and is_binary(href) do
+    true
+  end
+
+  def is_object_link_tag(_), do: false
 end
--- a/lib/pleroma/web/activity_pub/object_validators/question_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/question_validator.ex
@ -62,6 +62,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.QuestionValidator do
    data
    |> CommonFixes.fix_actor()
    |> CommonFixes.fix_object_defaults()
+    |> CommonFixes.fix_quote_url()
    |> Transmogrifier.fix_emoji()
    |> fix_closed()
  end
--- a/lib/pleroma/web/activity_pub/object_validators/tag_validator.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/tag_validator.ex
@ -9,15 +9,20 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.TagValidator do

  import Ecto.Changeset

+  require Pleroma.Constants
+
  @primary_key false
  embedded_schema do
    # Common
    field(:type, :string)
    field(:name, :string)

-    # Mention, Hashtag
+    # Mention, Hashtag, Link
    field(:href, ObjectValidators.Uri)

+    # Link
+    field(:mediaType, :string)
+
    # Emoji
    embeds_one :icon, IconObjectValidator, primary_key: false do
      field(:type, :string)
@ -68,6 +73,13 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.TagValidator do
    |> validate_required([:type, :name, :icon])
  end

+  def changeset(struct, %{"type" => "Link"} = data) do
+    struct
+    |> cast(data, [:type, :name, :mediaType, :href])
+    |> validate_inclusion(:mediaType, Pleroma.Constants.activity_json_mime_types())
+    |> validate_required([:type, :href, :mediaType])
+  end
+
  def changeset(struct, %{"type" => _} = data) do
    struct
    |> cast(data, [])
--- a/lib/pleroma/web/activity_pub/publisher.ex
+++ b/lib/pleroma/web/activity_pub/publisher.ex
@ -199,7 +199,6 @@ defmodule Pleroma.Web.ActivityPub.Publisher do

    inboxes =
      recipients
-      |> Enum.filter(&User.ap_enabled?/1)
      |> Enum.map(fn actor -> actor.inbox end)
      |> Enum.filter(fn inbox -> should_federate?(inbox, public) end)
      |> Instances.filter_reachable()
@ -241,7 +240,6 @@ defmodule Pleroma.Web.ActivityPub.Publisher do
    json = Jason.encode!(data)

    recipients(actor, activity)
-    |> Enum.filter(fn user -> User.ap_enabled?(user) end)
    |> Enum.map(fn %User{} = user ->
      determine_inbox(activity, user)
    end)
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@ -20,7 +20,6 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
  alias Pleroma.Web.ActivityPub.Utils
  alias Pleroma.Web.ActivityPub.Visibility
  alias Pleroma.Web.Federator
-  alias Pleroma.Workers.TransmogrifierWorker

  import Ecto.Query

@ -167,6 +166,27 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do

  def fix_in_reply_to(object, _options), do: object

+  def fix_quote_url_and_maybe_fetch(object, options \\ []) do
+    quote_url =
+      case Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes.fix_quote_url(object) do
+        %{"quoteUrl" => quote_url} -> quote_url
+        _ -> nil
+      end
+
+    with {:quoting?, true} <- {:quoting?, not is_nil(quote_url)},
+         {:ok, quoted_object} <- get_obj_helper(quote_url, options),
+         %Activity{} <- Activity.get_create_by_object_ap_id(quoted_object.data["id"]) do
+      Map.put(object, "quoteUrl", quoted_object.data["id"])
+    else
+      {:quoting?, _} ->
+        object
+
+      e ->
+        Logger.warn("Couldn't fetch #{inspect(quote_url)}, error: #{inspect(e)}")
+        object
+    end
+  end
+
  defp prepare_in_reply_to(in_reply_to) do
    cond do
      is_bitstring(in_reply_to) ->
@ -455,6 +475,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
      |> strip_internal_fields()
      |> fix_type(fetch_options)
      |> fix_in_reply_to(fetch_options)
+      |> fix_quote_url_and_maybe_fetch(fetch_options)

    data = Map.put(data, "object", object)
    options = Keyword.put(options, :local, false)
@ -629,6 +650,16 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do

  def set_reply_to_uri(obj), do: obj

+  @doc """
+  Fedibird compatibility
+  https://github.com/fedibird/mastodon/commit/dbd7ae6cf58a92ec67c512296b4daaea0d01e6ac
+  """
+  def set_quote_url(%{"quoteUrl" => quote_url} = object) when is_binary(quote_url) do
+    Map.put(object, "quoteUri", quote_url)
+  end
+
+  def set_quote_url(obj), do: obj
+
  @doc """
  Serialized Mastodon-compatible `replies` collection containing _self-replies_.
  Based on Mastodon's ActivityPub::NoteSerializer#replies.
@ -683,6 +714,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
    |> prepare_attachments
    |> set_conversation
    |> set_reply_to_uri
+    |> set_quote_url
    |> set_replies
    |> strip_internal_fields
    |> strip_internal_tags
@ -946,47 +978,6 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do

  defp strip_internal_tags(object), do: object

-  def perform(:user_upgrade, user) do
-    # we pass a fake user so that the followers collection is stripped away
-    old_follower_address = User.ap_followers(%User{nickname: user.nickname})
-
-    from(
-      a in Activity,
-      where: ^old_follower_address in a.recipients,
-      update: [
-        set: [
-          recipients:
-            fragment(
-              "array_replace(?,?,?)",
-              a.recipients,
-              ^old_follower_address,
-              ^user.follower_address
-            )
-        ]
-      ]
-    )
-    |> Repo.update_all([])
-  end
-
-  def upgrade_user_from_ap_id(ap_id) do
-    with %User{local: false} = user <- User.get_cached_by_ap_id(ap_id),
-         {:ok, data} <- ActivityPub.fetch_and_prepare_user_from_ap_id(ap_id),
-         {:ok, user} <- update_user(user, data) do
-      {:ok, _pid} = Task.start(fn -> ActivityPub.pinned_fetch_task(user) end)
-      TransmogrifierWorker.enqueue("user_upgrade", %{"user_id" => user.id})
-      {:ok, user}
-    else
-      %User{} = user -> {:ok, user}
-      e -> e
-    end
-  end
-
-  defp update_user(user, data) do
-    user
-    |> User.remote_user_changeset(data)
-    |> User.update_and_set_cache()
-  end
-
  def maybe_fix_user_url(%{"url" => url} = data) when is_map(url) do
    Map.put(data, "url", url["href"])
  end
--- a/lib/pleroma/web/api_spec.ex
+++ b/lib/pleroma/web/api_spec.ex
@ -10,6 +10,14 @@ defmodule Pleroma.Web.ApiSpec do

  @behaviour OpenApi

+  defp streaming_paths do
+    %{
+      "/api/v1/streaming" => %OpenApiSpex.PathItem{
+        get: Pleroma.Web.ApiSpec.StreamingOperation.streaming_operation()
+      }
+    }
+  end
+
  @impl OpenApi
  def spec(opts \\ []) do
    %OpenApi{
@ -45,7 +53,7 @@ defmodule Pleroma.Web.ApiSpec do
        }
      },
      # populate the paths from a phoenix router
-      paths: OpenApiSpex.Paths.from_router(Router),
+      paths: Map.merge(streaming_paths(), OpenApiSpex.Paths.from_router(Router)),
      components: %OpenApiSpex.Components{
        parameters: %{
          "accountIdOrNickname" =>
--- a/lib/pleroma/web/api_spec/operations/pleroma_backup_operation.ex
+++ b/lib/pleroma/web/api_spec/operations/pleroma_backup_operation.ex
@ -64,7 +64,13 @@ defmodule Pleroma.Web.ApiSpec.PleromaBackupOperation do
        content_type: %Schema{type: :string},
        file_name: %Schema{type: :string},
        file_size: %Schema{type: :integer},
-        processed: %Schema{type: :boolean}
+        processed: %Schema{type: :boolean, description: "whether this backup has succeeded"},
+        state: %Schema{
+          type: :string,
+          description: "the state of the backup",
+          enum: ["pending", "running", "complete", "failed"]
+        },
+        processed_number: %Schema{type: :integer, description: "the number of records processed"}
      },
      example: %{
        "content_type" => "application/zip",
@ -72,7 +78,9 @@ defmodule Pleroma.Web.ApiSpec.PleromaBackupOperation do
          "https://cofe.fe:4000/media/backups/archive-foobar-20200908T164207-Yr7vuT5Wycv-sN3kSN2iJ0k-9pMo60j9qmvRCdDqIew.zip",
        "file_size" => 4105,
        "inserted_at" => "2020-09-08T16:42:07.000Z",
-        "processed" => true
+        "processed" => true,
+        "state" => "complete",
+        "processed_number" => 20
      }
    }
  end
--- a/lib/pleroma/web/api_spec/operations/pleroma_scrobble_operation.ex
+++ b/lib/pleroma/web/api_spec/operations/pleroma_scrobble_operation.ex
@ -22,6 +22,7 @@ defmodule Pleroma.Web.ApiSpec.PleromaScrobbleOperation do
      summary: "Creates a new Listen activity for an account",
      security: [%{"oAuth" => ["write"]}],
      operationId: "PleromaAPI.ScrobbleController.create",
+      deprecated: true,
      requestBody: request_body("Parameters", create_request(), requried: true),
      responses: %{
        200 => Operation.response("Scrobble", "application/json", scrobble())
@ -34,6 +35,7 @@ defmodule Pleroma.Web.ApiSpec.PleromaScrobbleOperation do
      tags: ["Scrobbles"],
      summary: "Requests a list of current and recent Listen activities for an account",
      operationId: "PleromaAPI.ScrobbleController.index",
+      deprecated: true,
      parameters: [
        %Reference{"$ref": "#/components/parameters/accountIdOrNickname"} | pagination_params()
      ],
--- a/lib/pleroma/web/api_spec/operations/status_operation.ex
+++ b/lib/pleroma/web/api_spec/operations/status_operation.ex
@ -581,6 +581,11 @@ defmodule Pleroma.Web.ApiSpec.StatusOperation do
          type: :string,
          description:
            "Will reply to a given conversation, addressing only the people who are part of the recipient set of that conversation. Sets the visibility to `direct`."
+        },
+        quote_id: %Schema{
+          nullable: true,
+          allOf: [FlakeID],
+          description: "ID of the status being quoted, if any"
        }
      },
      example: %{
--- a/lib/pleroma/web/api_spec/operations/streaming_operation.ex
+++ b/lib/pleroma/web/api_spec/operations/streaming_operation.ex
@ -0,0 +1,464 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.ApiSpec.StreamingOperation do
+  alias OpenApiSpex.Operation
+  alias OpenApiSpex.Response
+  alias OpenApiSpex.Schema
+  alias Pleroma.Web.ApiSpec.NotificationOperation
+  alias Pleroma.Web.ApiSpec.Schemas.Chat
+  alias Pleroma.Web.ApiSpec.Schemas.Conversation
+  alias Pleroma.Web.ApiSpec.Schemas.FlakeID
+  alias Pleroma.Web.ApiSpec.Schemas.Status
+
+  require Pleroma.Constants
+
+  @spec open_api_operation(atom) :: Operation.t()
+  def open_api_operation(action) do
+    operation = String.to_existing_atom("#{action}_operation")
+    apply(__MODULE__, operation, [])
+  end
+
+  @spec streaming_operation() :: Operation.t()
+  def streaming_operation do
+    %Operation{
+      tags: ["Timelines"],
+      summary: "Establish streaming connection",
+      description: """
+      Receive statuses in real-time via WebSocket.
+
+      You can specify the access token on the query string or through the `sec-websocket-protocol` header. Using
+      the query string to authenticate is considered unsafe and should not be used unless you have to (e.g. to maintain
+      your client's compatibility with Mastodon).
+
+      You may specify a stream on the query string. If you do so and you are connecting to a stream that requires logged-in users,
+      you must specify the access token at the time of the connection (i.e. via query string or header).
+
+      Otherwise, you have the option to authenticate after you have established the connection through client-sent events.
+
+      The "Request body" section below describes what events clients can send through WebSocket, and the "Responses" section
+      describes what events server will send through WebSocket.
+      """,
+      security: [%{"oAuth" => ["read:statuses", "read:notifications"]}],
+      operationId: "WebsocketHandler.streaming",
+      parameters:
+        [
+          Operation.parameter(:connection, :header, %Schema{type: :string}, "connection header",
+            required: true
+          ),
+          Operation.parameter(:upgrade, :header, %Schema{type: :string}, "upgrade header",
+            required: true
+          ),
+          Operation.parameter(
+            :"sec-websocket-key",
+            :header,
+            %Schema{type: :string},
+            "sec-websocket-key header",
+            required: true
+          ),
+          Operation.parameter(
+            :"sec-websocket-version",
+            :header,
+            %Schema{type: :string},
+            "sec-websocket-version header",
+            required: true
+          )
+        ] ++ stream_params() ++ access_token_params(),
+      requestBody: request_body("Client-sent events", client_sent_events()),
+      responses: %{
+        101 => switching_protocols_response(),
+        200 =>
+          Operation.response(
+            "Server-sent events",
+            "application/json",
+            server_sent_events()
+          )
+      }
+    }
+  end
+
+  defp stream_params do
+    stream_specifier()
+    |> Enum.map(fn {name, schema} ->
+      Operation.parameter(name, :query, schema, get_schema(schema).description)
+    end)
+  end
+
+  defp access_token_params do
+    [
+      Operation.parameter(:access_token, :query, token(), token().description),
+      Operation.parameter(:"sec-websocket-protocol", :header, token(), token().description)
+    ]
+  end
+
+  defp switching_protocols_response do
+    %Response{
+      description: "Switching protocols",
+      headers: %{
+        "connection" => %OpenApiSpex.Header{required: true},
+        "upgrade" => %OpenApiSpex.Header{required: true},
+        "sec-websocket-accept" => %OpenApiSpex.Header{required: true}
+      }
+    }
+  end
+
+  defp server_sent_events do
+    %Schema{
+      oneOf: [
+        update_event(),
+        status_update_event(),
+        notification_event(),
+        chat_update_event(),
+        follow_relationships_update_event(),
+        conversation_event(),
+        delete_event(),
+        pleroma_respond_event()
+      ]
+    }
+  end
+
+  defp stream do
+    %Schema{
+      type: :array,
+      title: "Stream",
+      description: """
+      The stream identifier.
+      The first item is the name of the stream. If the stream needs a differentiator, the second item will be the corresponding identifier.
+      Currently, for the following stream types, there is a second element in the array:
+
+      - `list`: The second element is the id of the list, as a string.
+      - `hashtag`: The second element is the name of the hashtag.
+      - `public:remote:media` and `public:remote`: The second element is the domain of the corresponding instance.
+      """,
+      maxItems: 2,
+      minItems: 1,
+      items: %Schema{type: :string},
+      example: ["hashtag", "mew"]
+    }
+  end
+
+  defp get_schema(%Schema{} = schema), do: schema
+  defp get_schema(schema), do: schema.schema
+
+  defp server_sent_event_helper(name, description, type, payload, opts \\ []) do
+    payload_type = Keyword.get(opts, :payload_type, :json)
+    has_stream = Keyword.get(opts, :has_stream, true)
+
+    stream_properties =
+      if has_stream do
+        %{stream: stream()}
+      else
+        %{}
+      end
+
+    stream_example = if has_stream, do: %{"stream" => get_schema(stream()).example}, else: %{}
+
+    stream_required = if has_stream, do: [:stream], else: []
+
+    payload_schema =
+      if payload_type == :json do
+        %Schema{
+          title: "Event payload",
+          description: "JSON-encoded string of #{get_schema(payload).title}",
+          allOf: [payload]
+        }
+      else
+        payload
+      end
+
+    payload_example =
+      if payload_type == :json do
+        get_schema(payload).example |> Jason.encode!()
+      else
+        get_schema(payload).example
+      end
+
+    %Schema{
+      type: :object,
+      title: name,
+      description: description,
+      required: [:event, :payload] ++ stream_required,
+      properties:
+        %{
+          event: %Schema{
+            title: "Event type",
+            description: "Type of the event.",
+            type: :string,
+            required: true,
+            enum: [type]
+          },
+          payload: payload_schema
+        }
+        |> Map.merge(stream_properties),
+      example:
+        %{
+          "event" => type,
+          "payload" => payload_example
+        }
+        |> Map.merge(stream_example)
+    }
+  end
+
+  defp update_event do
+    server_sent_event_helper("New status", "A newly-posted status.", "update", Status)
+  end
+
+  defp status_update_event do
+    server_sent_event_helper("Edit", "A status that was just edited", "status.update", Status)
+  end
+
+  defp notification_event do
+    server_sent_event_helper(
+      "Notification",
+      "A new notification.",
+      "notification",
+      NotificationOperation.notification()
+    )
+  end
+
+  defp follow_relationships_update_event do
+    server_sent_event_helper(
+      "Follow relationships update",
+      "An update to follow relationships.",
+      "pleroma:follow_relationships_update",
+      %Schema{
+        type: :object,
+        title: "Follow relationships update",
+        required: [:state, :follower, :following],
+        properties: %{
+          state: %Schema{
+            type: :string,
+            description: "Follow state of the relationship.",
+            enum: ["follow_pending", "follow_accept", "follow_reject", "unfollow"]
+          },
+          follower: %Schema{
+            type: :object,
+            description: "Information about the follower.",
+            required: [:id, :follower_count, :following_count],
+            properties: %{
+              id: FlakeID,
+              follower_count: %Schema{type: :integer},
+              following_count: %Schema{type: :integer}
+            }
+          },
+          following: %Schema{
+            type: :object,
+            description: "Information about the following person.",
+            required: [:id, :follower_count, :following_count],
+            properties: %{
+              id: FlakeID,
+              follower_count: %Schema{type: :integer},
+              following_count: %Schema{type: :integer}
+            }
+          }
+        },
+        example: %{
+          "state" => "follow_pending",
+          "follower" => %{
+            "id" => "someUser1",
+            "follower_count" => 1,
+            "following_count" => 1
+          },
+          "following" => %{
+            "id" => "someUser2",
+            "follower_count" => 1,
+            "following_count" => 1
+          }
+        }
+      }
+    )
+  end
+
+  defp chat_update_event do
+    server_sent_event_helper(
+      "Chat update",
+      "A new chat message.",
+      "pleroma:chat_update",
+      Chat
+    )
+  end
+
+  defp conversation_event do
+    server_sent_event_helper(
+      "Conversation update",
+      "An update about a conversation",
+      "conversation",
+      Conversation
+    )
+  end
+
+  defp delete_event do
+    server_sent_event_helper(
+      "Delete",
+      "A status that was just deleted.",
+      "delete",
+      %Schema{
+        type: :string,
+        title: "Status id",
+        description: "Id of the deleted status",
+        allOf: [FlakeID],
+        example: "some-opaque-id"
+      },
+      payload_type: :string,
+      has_stream: false
+    )
+  end
+
+  defp pleroma_respond_event do
+    server_sent_event_helper(
+      "Server response",
+      "A response to a client-sent event.",
+      "pleroma:respond",
+      %Schema{
+        type: :object,
+        title: "Results",
+        required: [:result, :type],
+        properties: %{
+          result: %Schema{
+            type: :string,
+            title: "Result of the request",
+            enum: ["success", "error", "ignored"]
+          },
+          error: %Schema{
+            type: :string,
+            title: "Error code",
+            description: "An error identifier. Only appears if `result` is `error`."
+          },
+          type: %Schema{
+            type: :string,
+            description: "Type of the request."
+          }
+        },
+        example: %{"result" => "success", "type" => "pleroma:authenticate"}
+      },
+      has_stream: false
+    )
+  end
+
+  defp client_sent_events do
+    %Schema{
+      oneOf: [
+        subscribe_event(),
+        unsubscribe_event(),
+        authenticate_event()
+      ]
+    }
+  end
+
+  defp request_body(description, schema, opts \\ []) do
+    %OpenApiSpex.RequestBody{
+      description: description,
+      content: %{
+        "application/json" => %OpenApiSpex.MediaType{
+          schema: schema,
+          example: opts[:example],
+          examples: opts[:examples]
+        }
+      }
+    }
+  end
+
+  defp client_sent_event_helper(name, description, type, properties, opts) do
+    required = opts[:required] || []
+
+    %Schema{
+      type: :object,
+      title: name,
+      required: [:type] ++ required,
+      description: description,
+      properties:
+        %{
+          type: %Schema{type: :string, enum: [type], description: "Type of the event."}
+        }
+        |> Map.merge(properties),
+      example: opts[:example]
+    }
+  end
+
+  defp subscribe_event do
+    client_sent_event_helper(
+      "Subscribe",
+      "Subscribe to a stream.",
+      "subscribe",
+      stream_specifier(),
+      required: [:stream],
+      example: %{"type" => "subscribe", "stream" => "list", "list" => "1"}
+    )
+  end
+
+  defp unsubscribe_event do
+    client_sent_event_helper(
+      "Unsubscribe",
+      "Unsubscribe from a stream.",
+      "unsubscribe",
+      stream_specifier(),
+      required: [:stream],
+      example: %{
+        "type" => "unsubscribe",
+        "stream" => "public:remote:media",
+        "instance" => "example.org"
+      }
+    )
+  end
+
+  defp authenticate_event do
+    client_sent_event_helper(
+      "Authenticate",
+      "Authenticate via an access token.",
+      "pleroma:authenticate",
+      %{
+        token: token()
+      },
+      required: [:token]
+    )
+  end
+
+  defp token do
+    %Schema{
+      type: :string,
+      description: "An OAuth access token with corresponding permissions.",
+      example: "some token"
+    }
+  end
+
+  defp stream_specifier do
+    %{
+      stream: %Schema{
+        type: :string,
+        description: "The name of the stream.",
+        enum:
+          Pleroma.Constants.public_streams() ++
+            [
+              "public:remote",
+              "public:remote:media",
+              "user",
+              "user:pleroma_chat",
+              "user:notification",
+              "direct",
+              "list",
+              "hashtag"
+            ]
+      },
+      list: %Schema{
+        type: :string,
+        title: "List id",
+        description: "The id of the list. Required when `stream` is `list`.",
+        example: "some-id"
+      },
+      tag: %Schema{
+        type: :string,
+        title: "Hashtag name",
+        description: "The name of the hashtag. Required when `stream` is `hashtag`.",
+        example: "mew"
+      },
+      instance: %Schema{
+        type: :string,
+        title: "Domain name",
+        description:
+          "Domain name of the instance. Required when `stream` is `public:remote` or `public:remote:media`.",
+        example: "example.org"
+      }
+    }
+  end
+end
--- a/lib/pleroma/web/api_spec/schemas/status.ex
+++ b/lib/pleroma/web/api_spec/schemas/status.ex
@ -193,6 +193,26 @@ defmodule Pleroma.Web.ApiSpec.Schemas.Status do
            nullable: true,
            description: "The `acct` property of User entity for replied user (if any)"
          },
+          quote: %Schema{
+            allOf: [%OpenApiSpex.Reference{"$ref": "#/components/schemas/Status"}],
+            nullable: true,
+            description: "Quoted status (if any)"
+          },
+          quote_id: %Schema{
+            nullable: true,
+            allOf: [FlakeID],
+            description: "ID of the status being quoted, if any"
+          },
+          quote_url: %Schema{
+            type: :string,
+            format: :uri,
+            nullable: true,
+            description: "URL of the quoted status"
+          },
+          quote_visible: %Schema{
+            type: :boolean,
+            description: "`true` if the quoted post is visible to the user"
+          },
          local: %Schema{
            type: :boolean,
            description: "`true` if the post was made on the local instance"
--- a/lib/pleroma/web/common_api.ex
+++ b/lib/pleroma/web/common_api.ex
@ -33,6 +33,7 @@ defmodule Pleroma.Web.CommonAPI do

  def post_chat_message(%User{} = user, %User{} = recipient, content, opts \\ []) do
    with maybe_attachment <- opts[:media_id] && Object.get_by_id(opts[:media_id]),
+         :ok <- validate_chat_attachment_attribution(maybe_attachment, user),
         :ok <- validate_chat_content_length(content, !!maybe_attachment),
         {_, {:ok, chat_message_data, _meta}} <-
           {:build_object,
@ -71,6 +72,17 @@ defmodule Pleroma.Web.CommonAPI do
    text
  end

+  defp validate_chat_attachment_attribution(nil, _), do: :ok
+
+  defp validate_chat_attachment_attribution(attachment, user) do
+    with :ok <- Object.authorize_access(attachment, user) do
+      :ok
+    else
+      e ->
+        e
+    end
+  end
+
  defp validate_chat_content_length(_, true), do: :ok
  defp validate_chat_content_length(nil, false), do: {:error, :no_content}

@ -142,7 +154,7 @@ defmodule Pleroma.Web.CommonAPI do

  def delete(activity_id, user) do
    with {_, %Activity{data: %{"object" => _, "type" => "Create"}} = activity} <-
-           {:find_activity, Activity.get_by_id(activity_id)},
+           {:find_activity, Activity.get_by_id(activity_id, filter: [])},
         {_, %Object{} = object, _} <-
           {:find_object, Object.normalize(activity, fetch: false), activity},
         true <- User.privileged?(user, :messages_delete) || user.ap_id == object.data["actor"],
@ -583,7 +595,7 @@ defmodule Pleroma.Web.CommonAPI do
  end

  def update_report_state(activity_id, state) do
-    with %Activity{} = activity <- Activity.get_by_id(activity_id) do
+    with %Activity{} = activity <- Activity.get_by_id(activity_id, filter: []) do
      Utils.update_report_state(activity, state)
    else
      nil -> {:error, :not_found}
--- a/lib/pleroma/web/common_api/activity_draft.ex
+++ b/lib/pleroma/web/common_api/activity_draft.ex
@ -7,10 +7,12 @@ defmodule Pleroma.Web.CommonAPI.ActivityDraft do
  alias Pleroma.Conversation.Participation
  alias Pleroma.Object
  alias Pleroma.Web.ActivityPub.Builder
+  alias Pleroma.Web.ActivityPub.Visibility
  alias Pleroma.Web.CommonAPI
  alias Pleroma.Web.CommonAPI.Utils

  import Pleroma.Web.Gettext
+  import Pleroma.Web.Utils.Guards, only: [not_empty_string: 1]

  defstruct valid?: true,
            errors: [],
@ -22,6 +24,7 @@ defmodule Pleroma.Web.CommonAPI.ActivityDraft do
            attachments: [],
            in_reply_to: nil,
            in_reply_to_conversation: nil,
+            quote_post: nil,
            visibility: nil,
            expires_at: nil,
            extra: nil,
@ -53,7 +56,9 @@ defmodule Pleroma.Web.CommonAPI.ActivityDraft do
    |> poll()
    |> with_valid(&in_reply_to/1)
    |> with_valid(&in_reply_to_conversation/1)
+    |> with_valid(&quote_post/1)
    |> with_valid(&visibility/1)
+    |> with_valid(&quoting_visibility/1)
    |> content()
    |> with_valid(&to_and_cc/1)
    |> with_valid(&context/1)
@ -111,7 +116,7 @@ defmodule Pleroma.Web.CommonAPI.ActivityDraft do
  end

  defp attachments(%{params: params} = draft) do
-    attachments = Utils.attachments_from_ids(params)
+    attachments = Utils.attachments_from_ids(params, draft.user)
    draft = %__MODULE__{draft | attachments: attachments}

    case Utils.validate_attachments_count(attachments) do
@ -132,6 +137,18 @@ defmodule Pleroma.Web.CommonAPI.ActivityDraft do

  defp in_reply_to(draft), do: draft

+  defp quote_post(%{params: %{quote_id: id}} = draft) when not_empty_string(id) do
+    case Activity.get_by_id_with_object(id) do
+      %Activity{} = activity ->
+        %__MODULE__{draft | quote_post: activity}
+
+      _ ->
+        draft
+    end
+  end
+
+  defp quote_post(draft), do: draft
+
  defp in_reply_to_conversation(draft) do
    in_reply_to_conversation = Participation.get(draft.params[:in_reply_to_conversation_id])
    %__MODULE__{draft | in_reply_to_conversation: in_reply_to_conversation}
@ -147,6 +164,29 @@ defmodule Pleroma.Web.CommonAPI.ActivityDraft do
    end
  end

+  defp can_quote?(_draft, _object, visibility) when visibility in ~w(public unlisted local) do
+    true
+  end
+
+  defp can_quote?(draft, object, "private") do
+    draft.user.ap_id == object.data["actor"]
+  end
+
+  defp can_quote?(_, _, _) do
+    false
+  end
+
+  defp quoting_visibility(%{quote_post: %Activity{}} = draft) do
+    with %Object{} = object <- Object.normalize(draft.quote_post, fetch: false),
+         true <- can_quote?(draft, object, Visibility.get_visibility(object)) do
+      draft
+    else
+      _ -> add_error(draft, dgettext("errors", "Cannot quote private message"))
+    end
+  end
+
+  defp quoting_visibility(draft), do: draft
+
  defp expires_at(draft) do
    case CommonAPI.check_expiry_date(draft.params[:expires_in]) do
      {:ok, expires_at} -> %__MODULE__{draft | expires_at: expires_at}
@ -164,12 +204,15 @@ defmodule Pleroma.Web.CommonAPI.ActivityDraft do
    end
  end

-  defp content(draft) do
+  defp content(%{mentions: mentions} = draft) do
    {content_html, mentioned_users, tags} = Utils.make_content_html(draft)

+    mentioned_ap_ids =
+      Enum.map(mentioned_users, fn {_, mentioned_user} -> mentioned_user.ap_id end)
+
    mentions =
-      mentioned_users
-      |> Enum.map(fn {_, mentioned_user} -> mentioned_user.ap_id end)
+      mentions
+      |> Kernel.++(mentioned_ap_ids)
      |> Utils.get_addressed_users(draft.params[:to])

    %__MODULE__{draft | content_html: content_html, mentions: mentions, tags: tags}
--- a/lib/pleroma/web/common_api/utils.ex
+++ b/lib/pleroma/web/common_api/utils.ex
@ -23,21 +23,21 @@ defmodule Pleroma.Web.CommonAPI.Utils do
  require Logger
  require Pleroma.Constants

-  def attachments_from_ids(%{media_ids: ids, descriptions: desc}) do
-    attachments_from_ids_descs(ids, desc)
+  def attachments_from_ids(%{media_ids: ids, descriptions: desc}, user) do
+    attachments_from_ids_descs(ids, desc, user)
  end

-  def attachments_from_ids(%{media_ids: ids}) do
-    attachments_from_ids_no_descs(ids)
+  def attachments_from_ids(%{media_ids: ids}, user) do
+    attachments_from_ids_no_descs(ids, user)
  end

-  def attachments_from_ids(_), do: []
+  def attachments_from_ids(_, _), do: []

-  def attachments_from_ids_no_descs([]), do: []
+  def attachments_from_ids_no_descs([], _), do: []

-  def attachments_from_ids_no_descs(ids) do
+  def attachments_from_ids_no_descs(ids, user) do
    Enum.map(ids, fn media_id ->
-      case get_attachment(media_id) do
+      case get_attachment(media_id, user) do
        %Object{data: data} -> data
        _ -> nil
      end
@ -45,21 +45,27 @@ defmodule Pleroma.Web.CommonAPI.Utils do
    |> Enum.reject(&is_nil/1)
  end

-  def attachments_from_ids_descs([], _), do: []
+  def attachments_from_ids_descs([], _, _), do: []

-  def attachments_from_ids_descs(ids, descs_str) do
+  def attachments_from_ids_descs(ids, descs_str, user) do
    {_, descs} = Jason.decode(descs_str)

    Enum.map(ids, fn media_id ->
-      with %Object{data: data} <- get_attachment(media_id) do
+      with %Object{data: data} <- get_attachment(media_id, user) do
        Map.put(data, "name", descs[media_id])
      end
    end)
    |> Enum.reject(&is_nil/1)
  end

-  defp get_attachment(media_id) do
-    Repo.get(Object, media_id)
+  defp get_attachment(media_id, user) do
+    with %Object{data: data} = object <- Repo.get(Object, media_id),
+         %{"type" => type} when type in Pleroma.Constants.upload_object_types() <- data,
+         :ok <- Object.authorize_access(object, user) do
+      object
+    else
+      _ -> nil
+    end
  end

  @spec get_to_and_cc(ActivityDraft.t()) :: {list(String.t()), list(String.t())}
--- a/lib/pleroma/web/endpoint.ex
+++ b/lib/pleroma/web/endpoint.ex
@ -114,13 +114,10 @@ defmodule Pleroma.Web.Endpoint do
  plug(Plug.Logger, log: :debug)

  plug(Plug.Parsers,
-    parsers: [
-      :urlencoded,
-      :multipart,
-      :json
-    ],
+    parsers: [:urlencoded, Pleroma.Web.Multipart, :json],
    pass: ["*/*"],
    json_decoder: Jason,
+    # Note: this is compile-time only, won't work for database-config
    length: Config.get([:instance, :upload_limit]),
    body_reader: {Pleroma.Web.Plugs.DigestPlug, :read_body, []}
  )
--- a/lib/pleroma/web/federator.ex
+++ b/lib/pleroma/web/federator.ex
@ -6,7 +6,6 @@ defmodule Pleroma.Web.Federator do
  alias Pleroma.Activity
  alias Pleroma.Object.Containment
  alias Pleroma.User
-  alias Pleroma.Web.ActivityPub.ActivityPub
  alias Pleroma.Web.ActivityPub.Transmogrifier
  alias Pleroma.Web.ActivityPub.Utils
  alias Pleroma.Web.Federator.Publisher
@ -80,7 +79,7 @@ defmodule Pleroma.Web.Federator do

    # NOTE: we use the actor ID to do the containment, this is fine because an
    # actor shouldn't be acting on objects outside their own AP server.
-    with {_, {:ok, _user}} <- {:actor, ap_enabled_actor(actor)},
+    with {_, {:ok, _user}} <- {:actor, User.get_or_fetch_by_ap_id(actor)},
         nil <- Activity.normalize(params["id"]),
         {_, :ok} <-
           {:correct_origin?, Containment.contain_origin_from_id(actor, params)},
@ -110,14 +109,4 @@ defmodule Pleroma.Web.Federator do
        {:error, e}
    end
  end
-
-  def ap_enabled_actor(id) do
-    user = User.get_cached_by_ap_id(id)
-
-    if User.ap_enabled?(user) do
-      {:ok, user}
-    else
-      ActivityPub.make_user_from_ap_id(id)
-    end
-  end
 end
--- a/lib/pleroma/web/mastodon_api/controllers/account_controller.ex
+++ b/lib/pleroma/web/mastodon_api/controllers/account_controller.ex
@ -263,6 +263,18 @@ defmodule Pleroma.Web.MastodonAPI.AccountController do
      {:error, %Ecto.Changeset{errors: [background: {"file is too large", _}]}} ->
        render_error(conn, :request_entity_too_large, "File is too large")

+      {:error, %Ecto.Changeset{errors: [{:bio, {_, _}} | _]}} ->
+        render_error(conn, :request_entity_too_large, "Bio is too long")
+
+      {:error, %Ecto.Changeset{errors: [{:name, {_, _}} | _]}} ->
+        render_error(conn, :request_entity_too_large, "Name is too long")
+
+      {:error, %Ecto.Changeset{errors: [{:fields, {"invalid", _}} | _]}} ->
+        render_error(conn, :request_entity_too_large, "One or more field entries are too long")
+
+      {:error, %Ecto.Changeset{errors: [{:fields, {_, _}} | _]}} ->
+        render_error(conn, :request_entity_too_large, "Too many field entries")
+
      _e ->
        render_error(conn, :forbidden, "Invalid request")
    end
--- a/lib/pleroma/web/mastodon_api/views/instance_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/instance_view.ex
@ -69,6 +69,7 @@ defmodule Pleroma.Web.MastodonAPI.InstanceView do
      "multifetch",
      "pleroma:api/v1/notifications:include_types_filter",
      "editing",
+      "quote_posting",
      if Config.get([:activitypub, :blockers_visible]) do
        "blockers_visible"
      end,
--- a/lib/pleroma/web/mastodon_api/views/status_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/status_view.ex
@ -57,6 +57,27 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
    end)
  end

+  defp get_quoted_activities([]), do: %{}
+
+  defp get_quoted_activities(activities) do
+    activities
+    |> Enum.map(fn
+      %{data: %{"type" => "Create"}} = activity ->
+        object = Object.normalize(activity, fetch: false)
+        object && object.data["quoteUrl"] != "" && object.data["quoteUrl"]
+
+      _ ->
+        nil
+    end)
+    |> Enum.filter(& &1)
+    |> Activity.create_by_object_ap_id_with_object()
+    |> Repo.all()
+    |> Enum.reduce(%{}, fn activity, acc ->
+      object = Object.normalize(activity, fetch: false)
+      if object, do: Map.put(acc, object.data["id"], activity), else: acc
+    end)
+  end
+
  # DEPRECATED This field seems to be a left-over from the StatusNet era.
  # If your application uses `pleroma.conversation_id`: this field is deprecated.
  # It is currently stubbed instead by doing a CRC32 of the context, and
@ -97,6 +118,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
    # length(activities_with_links) * timeout
    fetch_rich_media_for_activities(activities)
    replied_to_activities = get_replied_to_activities(activities)
+    quoted_activities = get_quoted_activities(activities)

    parent_activities =
      activities
@ -129,6 +151,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
    opts =
      opts
      |> Map.put(:replied_to_activities, replied_to_activities)
+      |> Map.put(:quoted_activities, quoted_activities)
      |> Map.put(:parent_activities, parent_activities)
      |> Map.put(:relationships, relationships_opt)

@ -277,7 +300,6 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
      end

    reply_to = get_reply_to(activity, opts)
-
    reply_to_user = reply_to && CommonAPI.get_user(reply_to.data["actor"])

    history_len =
@ -290,6 +312,22 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
    # Here the implicit index of the current content is 0
    chrono_order = history_len - 1

+    quote_activity = get_quote(activity, opts)
+
+    quote_id =
+      case quote_activity do
+        %Activity{id: id} -> id
+        _ -> nil
+      end
+
+    quote_post =
+      if visible_for_user?(quote_activity, opts[:for]) and opts[:show_quote] != false do
+        quote_rendering_opts = Map.merge(opts, %{activity: quote_activity, show_quote: false})
+        render("show.json", quote_rendering_opts)
+      else
+        nil
+      end
+
    content =
      object
      |> render_content()
@ -398,6 +436,10 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
        conversation_id: get_context_id(activity),
        context: object.data["context"],
        in_reply_to_account_acct: reply_to_user && reply_to_user.nickname,
+        quote: quote_post,
+        quote_id: quote_id,
+        quote_url: object.data["quoteUrl"],
+        quote_visible: visible_for_user?(quote_activity, opts[:for]),
        content: %{"text/plain" => content_plaintext},
        spoiler_text: %{"text/plain" => summary},
        expires_at: expires_at,
@ -633,6 +675,25 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
    end
  end

+  def get_quote(activity, %{quoted_activities: quoted_activities}) do
+    object = Object.normalize(activity, fetch: false)
+
+    with nil <- quoted_activities[object.data["quoteUrl"]] do
+      # For when a quote post is inside an Announce
+      Activity.get_create_by_object_ap_id_with_object(object.data["quoteUrl"])
+    end
+  end
+
+  def get_quote(%{data: %{"object" => _object}} = activity, _) do
+    object = Object.normalize(activity, fetch: false)
+
+    if object.data["quoteUrl"] && object.data["quoteUrl"] != "" do
+      Activity.get_create_by_object_ap_id(object.data["quoteUrl"])
+    else
+      nil
+    end
+  end
+
  def render_content(%{data: %{"name" => name}} = object) when not is_nil(name) and name != "" do
    url = object.data["url"] || object.data["id"]

--- a/lib/pleroma/web/mastodon_api/websocket_handler.ex
+++ b/lib/pleroma/web/mastodon_api/websocket_handler.ex
@ -9,6 +9,7 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
  alias Pleroma.User
  alias Pleroma.Web.OAuth.Token
  alias Pleroma.Web.Streamer
+  alias Pleroma.Web.StreamerView

  @behaviour :cowboy_websocket

@ -32,8 +33,15 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
          req
        end

+      topics =
+        if topic do
+          [topic]
+        else
+          []
+        end
+
      {:cowboy_websocket, req,
-       %{user: user, topic: topic, oauth_token: oauth_token, count: 0, timer: nil},
+       %{user: user, topics: topics, oauth_token: oauth_token, count: 0, timer: nil},
       %{idle_timeout: @timeout}}
    else
      {:error, :bad_topic} ->
@ -50,10 +58,10 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do

  def websocket_init(state) do
    Logger.debug(
-      "#{__MODULE__} accepted websocket connection for user #{(state.user || %{id: "anonymous"}).id}, topic #{state.topic}"
+      "#{__MODULE__} accepted websocket connection for user #{(state.user || %{id: "anonymous"}).id}, topics #{state.topics}"
    )

-    Streamer.add_socket(state.topic, state.oauth_token)
+    Enum.each(state.topics, fn topic -> Streamer.add_socket(topic, state.oauth_token) end)
    {:ok, %{state | timer: timer()}}
  end

@ -66,16 +74,26 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
  # We only receive pings for now
  def websocket_handle(:ping, state), do: {:ok, state}

+  def websocket_handle({:text, text}, state) do
+    with {:ok, %{} = event} <- Jason.decode(text) do
+      handle_client_event(event, state)
+    else
+      _ ->
+        Logger.error("#{__MODULE__} received non-JSON event: #{inspect(text)}")
+        {:ok, state}
+    end
+  end
+
  def websocket_handle(frame, state) do
    Logger.error("#{__MODULE__} received frame: #{inspect(frame)}")
    {:ok, state}
  end

-  def websocket_info({:render_with_user, view, template, item}, state) do
+  def websocket_info({:render_with_user, view, template, item, topic}, state) do
    user = %User{} = User.get_cached_by_ap_id(state.user.ap_id)

    unless Streamer.filtered_by_user?(user, item) do
-      websocket_info({:text, view.render(template, item, user)}, %{state | user: user})
+      websocket_info({:text, view.render(template, item, user, topic)}, %{state | user: user})
    else
      {:ok, state}
    end
@ -109,10 +127,10 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do

  def terminate(reason, _req, state) do
    Logger.debug(
-      "#{__MODULE__} terminating websocket connection for user #{(state.user || %{id: "anonymous"}).id}, topic #{state.topic || "?"}: #{inspect(reason)}"
+      "#{__MODULE__} terminating websocket connection for user #{(state.user || %{id: "anonymous"}).id}, topics #{state.topics || "?"}: #{inspect(reason)}"
    )

-    Streamer.remove_socket(state.topic)
+    Enum.each(state.topics, fn topic -> Streamer.remove_socket(topic) end)
    :ok
  end

@ -137,4 +155,103 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
  defp timer do
    Process.send_after(self(), :tick, @tick)
  end
+
+  defp handle_client_event(%{"type" => "subscribe", "stream" => _topic} = params, state) do
+    with {_, {:ok, topic}} <-
+           {:topic, Streamer.get_topic(params["stream"], state.user, state.oauth_token, params)},
+         {_, false} <- {:subscribed, topic in state.topics} do
+      Streamer.add_socket(topic, state.oauth_token)
+
+      {[
+         {:text,
+          StreamerView.render("pleroma_respond.json", %{type: "subscribe", result: "success"})}
+       ], %{state | topics: [topic | state.topics]}}
+    else
+      {:subscribed, true} ->
+        {[
+           {:text,
+            StreamerView.render("pleroma_respond.json", %{type: "subscribe", result: "ignored"})}
+         ], state}
+
+      {:topic, {:error, error}} ->
+        {[
+           {:text,
+            StreamerView.render("pleroma_respond.json", %{
+              type: "subscribe",
+              result: "error",
+              error: error
+            })}
+         ], state}
+    end
+  end
+
+  defp handle_client_event(%{"type" => "unsubscribe", "stream" => _topic} = params, state) do
+    with {_, {:ok, topic}} <-
+           {:topic, Streamer.get_topic(params["stream"], state.user, state.oauth_token, params)},
+         {_, true} <- {:subscribed, topic in state.topics} do
+      Streamer.remove_socket(topic)
+
+      {[
+         {:text,
+          StreamerView.render("pleroma_respond.json", %{type: "unsubscribe", result: "success"})}
+       ], %{state | topics: List.delete(state.topics, topic)}}
+    else
+      {:subscribed, false} ->
+        {[
+           {:text,
+            StreamerView.render("pleroma_respond.json", %{type: "unsubscribe", result: "ignored"})}
+         ], state}
+
+      {:topic, {:error, error}} ->
+        {[
+           {:text,
+            StreamerView.render("pleroma_respond.json", %{
+              type: "unsubscribe",
+              result: "error",
+              error: error
+            })}
+         ], state}
+    end
+  end
+
+  defp handle_client_event(
+         %{"type" => "pleroma:authenticate", "token" => access_token} = _params,
+         state
+       ) do
+    with {:auth, nil, nil} <- {:auth, state.user, state.oauth_token},
+         {:ok, user, oauth_token} <- authenticate_request(access_token, nil) do
+      {[
+         {:text,
+          StreamerView.render("pleroma_respond.json", %{
+            type: "pleroma:authenticate",
+            result: "success"
+          })}
+       ], %{state | user: user, oauth_token: oauth_token}}
+    else
+      {:auth, _, _} ->
+        {[
+           {:text,
+            StreamerView.render("pleroma_respond.json", %{
+              type: "pleroma:authenticate",
+              result: "error",
+              error: :already_authenticated
+            })}
+         ], state}
+
+      _ ->
+        {[
+           {:text,
+            StreamerView.render("pleroma_respond.json", %{
+              type: "pleroma:authenticate",
+              result: "error",
+              error: :unauthorized
+            })}
+         ], state}
+    end
+  end
+
+  defp handle_client_event(params, state) do
+    Logger.error("#{__MODULE__} received unknown event: #{inspect(params)}")
+    {[], state}
+  end
 end
--- a/lib/pleroma/web/media_proxy/media_proxy_controller.ex
+++ b/lib/pleroma/web/media_proxy/media_proxy_controller.ex
@ -12,7 +12,6 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
  alias Pleroma.Web.MediaProxy
  alias Plug.Conn

-  plug(:validate_host)
  plug(:sandbox)

  def remote(conn, %{"sig" => sig64, "url" => url64}) do
@ -206,30 +205,6 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
    Config.get([:media_proxy, :proxy_opts], [])
  end

-  defp validate_host(conn, _params) do
-    %{scheme: proxy_scheme, host: proxy_host, port: proxy_port} =
-      MediaProxy.base_url() |> URI.parse()
-
-    if match?(^proxy_host, conn.host) do
-      conn
-    else
-      redirect_url =
-        %URI{
-          scheme: proxy_scheme,
-          host: proxy_host,
-          port: proxy_port,
-          path: conn.request_path,
-          query: conn.query_string
-        }
-        |> URI.to_string()
-        |> String.trim_trailing("?")
-
-      conn
-      |> Phoenix.Controller.redirect(external: redirect_url)
-      |> halt()
-    end
-  end
-
  defp sandbox(conn, _params) do
    conn
    |> merge_resp_headers([{"content-security-policy", "sandbox;"}])
--- a/lib/pleroma/web/metadata/providers/twitter_card.ex
+++ b/lib/pleroma/web/metadata/providers/twitter_card.ex
@ -76,9 +76,10 @@ defmodule Pleroma.Web.Metadata.Providers.TwitterCard do
                {:meta, [name: "twitter:card", content: "summary_large_image"], []},
                {:meta,
                 [
-                   name: "twitter:player",
+                   name: "twitter:image",
                   content: MediaProxy.url(url["href"])
-                 ], []}
+                 ], []},
+                {:meta, [name: "twitter:image:alt", content: truncate(attachment["name"])], []}
                | acc
              ]
              |> maybe_add_dimensions(url)
@ -130,4 +131,12 @@ defmodule Pleroma.Web.Metadata.Providers.TwitterCard do
        metadata
    end
  end
+
+  defp truncate(nil), do: ""
+
+  defp truncate(text) do
+    # truncate to 420 characters
+    # see https://developer.twitter.com/en/docs/twitter-for-websites/cards/overview/markup
+    Pleroma.Formatter.truncate(text, 420)
+  end
 end
--- a/lib/pleroma/web/multipart.ex
+++ b/lib/pleroma/web/multipart.ex
@ -0,0 +1,22 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+# <https://hexdocs.pm/plug/Plug.Parsers.MULTIPART.html#module-dynamic-configuration>
+defmodule Pleroma.Web.Multipart do
+  @multipart Plug.Parsers.MULTIPART
+
+  def init(opts) do
+    opts
+  end
+
+  def parse(conn, "multipart", subtype, headers, opts) do
+    length = Pleroma.Config.get([:instance, :upload_limit])
+    opts = @multipart.init([length: length] ++ opts)
+    @multipart.parse(conn, "multipart", subtype, headers, opts)
+  end
+
+  def parse(conn, _type, _subtype, _headers, _opts) do
+    {:next, conn}
+  end
+end
--- a/lib/pleroma/web/pleroma_api/views/backup_view.ex
+++ b/lib/pleroma/web/pleroma_api/views/backup_view.ex
@ -9,12 +9,22 @@ defmodule Pleroma.Web.PleromaAPI.BackupView do
  alias Pleroma.Web.CommonAPI.Utils

  def render("show.json", %{backup: %Backup{} = backup}) do
+    # To deal with records before the migration
+    state =
+      if backup.state == :invalid do
+        if backup.processed, do: :complete, else: :failed
+      else
+        backup.state
+      end
+
    %{
      id: backup.id,
      content_type: backup.content_type,
      url: download_url(backup),
      file_size: backup.file_size,
      processed: backup.processed,
+      state: to_string(state),
+      processed_number: backup.processed_number,
      inserted_at: Utils.to_masto_date(backup.inserted_at)
    }
  end
--- a/lib/pleroma/web/plugs/http_security_plug.ex
+++ b/lib/pleroma/web/plugs/http_security_plug.ex
@ -93,18 +93,26 @@ defmodule Pleroma.Web.Plugs.HTTPSecurityPlug do

    img_src = "img-src 'self' data: blob:"
    media_src = "media-src 'self'"
+    connect_src = ["connect-src 'self' blob: ", static_url, ?\s, websocket_url]

    # Strict multimedia CSP enforcement only when MediaProxy is enabled
-    {img_src, media_src} =
+    {img_src, media_src, connect_src} =
      if Config.get([:media_proxy, :enabled]) &&
           !Config.get([:media_proxy, :proxy_opts, :redirect_on_failure]) do
        sources = build_csp_multimedia_source_list()
-        {[img_src, sources], [media_src, sources]}
-      else
-        {[img_src, " https:"], [media_src, " https:"]}
-      end

-    connect_src = ["connect-src 'self' blob: ", static_url, ?\s, websocket_url]
+        {
+          [img_src, sources],
+          [media_src, sources],
+          [connect_src, sources]
+        }
+      else
+        {
+          [img_src, " https:"],
+          [media_src, " https:"],
+          [connect_src, " https:"]
+        }
+      end

    connect_src =
      if Config.get(:env) == :dev do
--- a/Show more
+++ b/Show more
				`@ -1 +0,0 @@`
				`MediaProxy responses now return a sandbox CSP header`
				`@ -1 +0,0 @@`
				`remove BBS/SSH feature, replaced by an external bridge.`
				`@ -1 +0,0 @@`
				`UploadedMedia: Add missing disposition_type to Content-Disposition`
				`@ -1 +0,0 @@`
				`Fix abnormal behaviour when refetching a poll`
				`@ -1 +0,0 @@`
				`Validate Host header for MediaProxy and Uploads and return a 302 if the base_url has changed`
				`@ -0,0 +1 @@`
				`Fix XML External Entity (XXE) loading vulnerability allowing to fetch arbitary files from the server's filesystem`
				`@ -0,0 +1 @@`
				`CommonAPI: Prevent users from accessing media of other users by creating a status with reused attachment ID`
				`@ -1 +0,0 @@`
				`Correctly handle the situation when a poll has both "anyOf" and "oneOf" but one of them being empty`
				`@ -0,0 +1 @@`
				`- Reduced permissions of config files and directories, distros requiring greater permissions like group-read need to pre-create the directories`