Merge branch 'develop' into 'fix/oauth-compile-time'

# Conflicts:
#   CHANGELOG.md

.formatter.exs

@@ -1,3 +1,3 @@
 [
-  inputs: ["mix.exs", "{config,lib,test}/**/*.{ex,exs}", "priv/repo/migrations/*.exs"]
+  inputs: ["mix.exs", "{config,lib,test}/**/*.{ex,exs}", "priv/repo/migrations/*.exs", "priv/scrubbers/*.ex"]
 ]

CHANGELOG.md

@@ -83,6 +83,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Not being able to log in to some third-party apps when logged in to MastoFE
 - MRF: `Delete` activities being exempt from MRF policies
 - OTP releases: Not being able to configure OAuth expired token cleanup interval
+- OTP releases: Not being able to configure HTML sanitization policy
 <details>
   <summary>API Changes</summary>
 

docs/API/differences_in_mastoapi_responses.md

@@ -103,6 +103,7 @@ The `type` value is `move`. Has an additional field:
 Accepts additional parameters:
 
 - `exclude_visibilities`: will exclude the notifications for activities with the given visibilities. The parameter accepts an array of visibility types (`public`, `unlisted`, `private`, `direct`). Usage example: `GET /api/v1/notifications?exclude_visibilities[]=direct&exclude_visibilities[]=private`.
+- `with_move`: boolean, when set to `true` will include Move notifications. `false` by default.
 
 ## POST `/api/v1/statuses`
 

docs/administration/CLI_tasks/config.md

@@ -3,17 +3,26 @@
 !!! danger
     This is a Work In Progress, not usable just yet.
 
-Every command should be ran with a prefix, in case of OTP releases it is `./bin/pleroma_ctl config` and in case of source installs it's
-`mix pleroma.config`.
+{! backend/administration/CLI_tasks/general_cli_task_info.include !}
 
 ## Transfer config from file to DB.
 
-```sh
-$PREFIX migrate_to_db
+```sh tab="OTP"
+ ./bin/pleroma_ctl config migrate_to_db
 ```
 
+```sh tab="From Source"
+mix pleroma.config migrate_to_db
+```
+
+
 ## Transfer config from DB to `config/env.exported_from_db.secret.exs`
 
-```sh
-$PREFIX migrate_from_db <env>
+```sh tab="OTP"
+ ./bin/pleroma_ctl config migrate_from_db <env>
 ```
+
+```sh tab="From Source"
+mix pleroma.config migrate_from_db <env>
+```
+

docs/administration/CLI_tasks/database.md

@@ -1,6 +1,6 @@
 # Database maintenance tasks
 
-Every command should be ran with a prefix, in case of OTP releases it is `./bin/pleroma_ctl database` and in case of source installs it's `mix pleroma.database`.
+{! backend/administration/CLI_tasks/general_cli_task_info.include !}
 
 !!! danger
     These mix tasks can take a long time to complete. Many of them were written to address specific database issues that happened because of bugs in migrations or other specific scenarios. Do not run these tasks "just in case" if everything is fine your instance.
@@ -9,8 +9,12 @@ Every command should be ran with a prefix, in case of OTP releases it is `./bin/
 
 Replaces embedded objects with references to them in the `objects` table. Only needs to be ran once if the instance was created before Pleroma 1.0.5. The reason why this is not a migration is because it could significantly increase the database size after being ran, however after this `VACUUM FULL` will be able to reclaim about 20% (really depends on what is in the database, your mileage may vary) of the db size before the migration.
 
-```sh
-$PREFIX remove_embedded_objects [<options>]
+```sh tab="OTP"
+./bin/pleroma_ctl database remove_embedded_objects [<options>]
+```
+
+```sh tab="From Source"
+mix pleroma.database remove_embedded_objects [<options>]
 ```
 
 ### Options
@@ -20,11 +24,15 @@ $PREFIX remove_embedded_objects [<options>]
 
 This will prune remote posts older than 90 days (configurable with [`config :pleroma, :instance, remote_post_retention_days`](../../configuration/cheatsheet.md#instance)) from the database, they will be refetched from source when accessed.
 
-!!! note
-    The disk space will only be reclaimed after `VACUUM FULL`
+!!! danger
+    The disk space will only be reclaimed after `VACUUM FULL`. You may run out of disk space during the execution of the task or vacuuming if you don't have about 1/3rds of the database size free.
 
-```sh
-$PREFIX pleroma.database prune_objects [<options>]
+```sh tab="OTP"
+./bin/pleroma_ctl database prune_objects [<options>]
+```
+
+```sh tab="From Source"
+mix pleroma.database prune_objects [<options>]
 ```
 
 ### Options
@@ -34,18 +42,30 @@ $PREFIX pleroma.database prune_objects [<options>]
 
 Can be safely re-run
 
-```sh
-$PREFIX bump_all_conversations
+```sh tab="OTP"
+./bin/pleroma_ctl database bump_all_conversations
+```
+
+```sh tab="From Source"
+mix pleroma.database bump_all_conversations
 ```
 
 ## Remove duplicated items from following and update followers count for all users
 
-```sh
-$PREFIX update_users_following_followers_counts
+```sh tab="OTP"
+./bin/pleroma_ctl database update_users_following_followers_counts
+```
+
+```sh tab="From Source"
+mix pleroma.database update_users_following_followers_counts
 ```
 
 ## Fix the pre-existing "likes" collections for all objects
 
-```sh
-$PREFIX fix_likes_collections
+```sh tab="OTP"
+./bin/pleroma_ctl database fix_likes_collections
+```
+
+```sh tab="From Source"
+mix pleroma.database fix_likes_collections
 ```

docs/administration/CLI_tasks/digest.md

@@ -1,13 +1,24 @@
 # Managing digest emails
-Every command should be ran with a prefix, in case of OTP releases it is `./bin/pleroma_ctl digest` and in case of source installs it's `mix pleroma.digest`.
+
+{! backend/administration/CLI_tasks/general_cli_task_info.include !}
 
 ## Send digest email since given date (user registration date by default) ignoring user activity status.
 
-```sh
-$PREFIX test <nickname> [<since_date>]
+```sh tab="OTP"
+ ./bin/pleroma_ctl digest test <nickname> [<since_date>]
 ```
 
-Example: 
-```sh
-$PREFIX test donaldtheduck 2019-05-20
+```sh tab="From Source"
+mix pleroma.digest test <nickname> [<since_date>]
 ```
+
+
+Example: 
+```sh tab="OTP"
+ ./bin/pleroma_ctl digest test donaldtheduck 2019-05-20
+```
+
+```sh tab="From Source"
+mix pleroma.digest test donaldtheduck 2019-05-20
+```
+

docs/administration/CLI_tasks/emoji.md

@@ -1,28 +1,44 @@
 # Managing emoji packs
 
-Every command should be ran with a prefix, in case of OTP releases it is `./bin/pleroma_ctl emoji` and in case of source installs it's `mix pleroma.emoji`.
+{! backend/administration/CLI_tasks/general_cli_task_info.include !}
 
 ## Lists emoji packs and metadata specified in the manifest
 
-```sh
-$PREFIX ls-packs [<options>]
+```sh tab="OTP"
+./bin/pleroma_ctl emoji ls-packs [<options>]
 ```
 
+```sh tab="From Source"
+mix pleroma.emoji ls-packs [<options>]
+```
+
+
 ### Options
 - `-m, --manifest PATH/URL` - path to a custom manifest, it can either be an URL starting with `http`, in that case the manifest will be fetched from that address, or a local path
 
 ## Fetch, verify and install the specified packs from the manifest into `STATIC-DIR/emoji/PACK-NAME`
-```sh
-$PREFIX get-packs [<options>] <packs>
+
+```sh tab="OTP"
+./bin/pleroma_ctl emoji get-packs [<options>] <packs>
+```
+
+```sh tab="From Source"
+mix pleroma.emoji get-packs [<options>] <packs>
 ```
 
 ### Options
 - `-m, --manifest PATH/URL` - same as [`ls-packs`](#ls-packs)
 
 ## Create a new manifest entry and a file list from the specified remote pack file
-```sh
-$PREFIX gen-pack PACK-URL
+
+```sh tab="OTP"
+./bin/pleroma_ctl emoji gen-pack PACK-URL
 ```
+
+```sh tab="From Source"
+mix pleroma.emoji gen-pack PACK-URL
+```
+
 Currently, only .zip archives are recognized as remote pack files and packs are therefore assumed to be zip archives. This command is intended to run interactively and will first ask you some basic questions about the pack, then download the remote file and generate an SHA256 checksum for it, then generate an emoji file list for you. 
 
   The manifest entry will either be written to a newly created `index.json` file or appended to the existing one, *replacing* the old pack with the same name if it was in the file previously.

docs/administration/CLI_tasks/general_cli_task_info.include

@@ -0,0 +1,5 @@
+Every command should be ran as the `pleroma` user from it's home directory. For example if you are superuser, you would have to wrap the command in `su pleroma -s $SHELL -lc "$COMMAND"`.
+
+??? note "From source note about `MIX_ENV`"
+
+     The `mix` command should be prefixed with the name of environment your Pleroma server is running in, usually it's `MIX_ENV=prod`

docs/administration/CLI_tasks/instance.md

@@ -1,12 +1,17 @@
 # Managing instance configuration
 
-Every command should be ran with a prefix, in case of OTP releases it is `./bin/pleroma_ctl instance` and in case of source installs it's `mix pleroma.instance`.
+{! backend/administration/CLI_tasks/general_cli_task_info.include !}
 
 ## Generate a new configuration file
-```sh
-$PREFIX gen [<options>]
+```sh tab="OTP"
+ ./bin/pleroma_ctl instance gen [<options>]
 ```
 
+```sh tab="From Source"
+mix pleroma.instance gen [<options>]
+```
+
+
 If any of the options are left unspecified, you will be prompted interactively.
 
 ### Options

docs/administration/CLI_tasks/relay.md

@@ -1,30 +1,33 @@
 # Managing relays
 
-Every command should be ran with a prefix, in case of OTP releases it is `./bin/pleroma_ctl relay` and in case of source installs it's `mix pleroma.relay`.
+{! backend/administration/CLI_tasks/general_cli_task_info.include !}
 
 ## Follow a relay
-```sh
-$PREFIX follow <relay_url>
+
+```sh tab="OTP"
+./bin/pleroma_ctl relay follow <relay_url>
 ```
 
-Example:
-```sh
-$PREFIX follow https://example.org/relay
+```sh tab="From Source"
+mix pleroma.relay follow <relay_url>
 ```
 
 ## Unfollow a remote relay
 
-```sh
-$PREFIX unfollow <relay_url>
+```sh tab="OTP"
+./bin/pleroma_ctl relay unfollow <relay_url>
 ```
 
-Example:
-```sh
-$PREFIX unfollow https://example.org/relay
+```sh tab="From Source"
+mix pleroma.relay unfollow <relay_url>
 ```
 
 ## List relay subscriptions
 
-```sh
-$PREFIX list
+```sh tab="OTP"
+./bin/pleroma_ctl relay list
+```
+
+```sh tab="From Source"
+mix pleroma.relay list
 ```

docs/administration/CLI_tasks/uploads.md

@@ -1,11 +1,16 @@
 # Managing uploads
 
-Every command should be ran with a prefix, in case of OTP releases it is `./bin/pleroma_ctl uploads` and in case of source installs it's `mix pleroma.uploads`.
+{! backend/administration/CLI_tasks/general_cli_task_info.include !}
 
 ## Migrate uploads from local to remote storage
-```sh
-$PREFIX migrate_local <target_uploader> [<options>]
+```sh tab="OTP"
+ ./bin/pleroma_ctl uploads migrate_local <target_uploader> [<options>]
 ```
+
+```sh tab="From Source"
+mix pleroma.uploads migrate_local <target_uploader> [<options>]
+```
+
 ### Options
 - `--delete` - delete local uploads after migrating them to the target uploader
 

docs/administration/CLI_tasks/user.md

@@ -1,12 +1,18 @@
 # Managing users
 
-Every command should be ran with a prefix, in case of OTP releases it is `./bin/pleroma_ctl user` and in case of source installs it's `mix pleroma.user`.
+{! backend/administration/CLI_tasks/general_cli_task_info.include !}
 
 ## Create a user
-```sh
-$PREFIX new <nickname> <email> [<options>]
+
+```sh tab="OTP"
+./bin/pleroma_ctl user new <email> [<options>]
 ```
 
+```sh tab="From Source"
+mix pleroma.user new <email> [<options>]
+```
+
+
 ### Options
 - `--name <name>` - the user's display name
 - `--bio <bio>` - the user's bio
@@ -16,84 +22,159 @@ $PREFIX new <nickname> <email> [<options>]
 - `-y`, `--assume-yes`/`--no-assume-yes` - whether to assume yes to all questions
 
 ## List local users
-```sh
-$PREFIX list
+```sh tab="OTP"
+ ./bin/pleroma_ctl user list
 ```
 
-## Generate an invite link
-```sh
-$PREFIX invite [<options>]
+```sh tab="From Source"
+mix pleroma.user list
 ```
 
+
+## Generate an invite link
+```sh tab="OTP"
+ ./bin/pleroma_ctl user invite [<options>]
+```
+
+```sh tab="From Source"
+mix pleroma.user invite [<options>]
+```
+
+
 ### Options
 - `--expires-at DATE` - last day on which token is active (e.g. "2019-04-05")
 - `--max-use NUMBER` - maximum numbers of token uses
 
 ## List generated invites
-```sh
-$PREFIX invites
+```sh tab="OTP"
+ ./bin/pleroma_ctl user invites
 ```
 
+```sh tab="From Source"
+mix pleroma.user invites
+```
+
+
 ## Revoke invite
-```sh
-$PREFIX revoke_invite <token_or_id>
+```sh tab="OTP"
+ ./bin/pleroma_ctl user revoke_invite <token_or_id>
 ```
 
+```sh tab="From Source"
+mix pleroma.user revoke_invite <token_or_id>
+```
+
+
 ## Delete a user
-```sh
-$PREFIX rm <nickname>
+```sh tab="OTP"
+ ./bin/pleroma_ctl user rm <nickname>
 ```
 
+```sh tab="From Source"
+mix pleroma.user rm <nickname>
+```
+
+
 ## Delete user's posts and interactions
-```sh
-$PREFIX delete_activities <nickname>
+```sh tab="OTP"
+ ./bin/pleroma_ctl user delete_activities <nickname>
 ```
 
+```sh tab="From Source"
+mix pleroma.user delete_activities <nickname>
+```
+
+
 ## Sign user out from all applications (delete user's OAuth tokens and authorizations)
-```sh
-$PREFIX sign_out <nickname>
+```sh tab="OTP"
+ ./bin/pleroma_ctl user sign_out <nickname>
 ```
 
+```sh tab="From Source"
+mix pleroma.user sign_out <nickname>
+```
+
+
 ## Deactivate or activate a user 
-```sh
-$PREFIX toggle_activated <nickname> 
+```sh tab="OTP"
+ ./bin/pleroma_ctl user toggle_activated <nickname> 
 ```
 
+```sh tab="From Source"
+mix pleroma.user toggle_activated <nickname> 
+```
+
+
 ## Unsubscribe local users from a user and deactivate the user
-```sh
-$PREFIX unsubscribe NICKNAME
+```sh tab="OTP"
+ ./bin/pleroma_ctl user unsubscribe NICKNAME
 ```
 
+```sh tab="From Source"
+mix pleroma.user unsubscribe NICKNAME
+```
+
+
 ## Unsubscribe local users from an instance and deactivate all accounts on it
-```sh
-$PREFIX unsubscribe_all_from_instance <instance>
+```sh tab="OTP"
+ ./bin/pleroma_ctl user unsubscribe_all_from_instance <instance>
 ```
 
+```sh tab="From Source"
+mix pleroma.user unsubscribe_all_from_instance <instance>
+```
+
+
 ## Create a password reset link for user
-```sh
-$PREFIX reset_password <nickname>
+```sh tab="OTP"
+ ./bin/pleroma_ctl user reset_password <nickname>
 ```
 
-## Set the value of the given user's settings
-```sh
-$PREFIX set <nickname> [<options>]
+```sh tab="From Source"
+mix pleroma.user reset_password <nickname>
 ```
+
+
+## Set the value of the given user's settings
+```sh tab="OTP"
+ ./bin/pleroma_ctl user set <nickname> [<options>]
+```
+
+```sh tab="From Source"
+mix pleroma.user set <nickname> [<options>]
+```
+
 ### Options
 - `--locked`/`--no-locked` - whether the user should be locked
 - `--moderator`/`--no-moderator` - whether the user should be a moderator
 - `--admin`/`--no-admin` - whether the user should be an admin
 
 ## Add tags to a user
-```sh
-$PREFIX tag <nickname> <tags>
+```sh tab="OTP"
+ ./bin/pleroma_ctl user tag <nickname> <tags>
 ```
 
+```sh tab="From Source"
+mix pleroma.user tag <nickname> <tags>
+```
+
+
 ## Delete tags from a user
-```sh
-$PREFIX untag <nickname> <tags>
+```sh tab="OTP"
+ ./bin/pleroma_ctl user untag <nickname> <tags>
 ```
 
-## Toggle confirmation status of the user
-```sh
-$PREFIX toggle_confirmed <nickname>
+```sh tab="From Source"
+mix pleroma.user untag <nickname> <tags>
 ```
+
+
+## Toggle confirmation status of the user
+```sh tab="OTP"
+ ./bin/pleroma_ctl user toggle_confirmed <nickname>
+```
+
+```sh tab="From Source"
+mix pleroma.user toggle_confirmed <nickname>
+```
+

lib/pleroma/application.ex

@@ -30,6 +30,7 @@ def user_agent do
   # See http://elixir-lang.org/docs/stable/elixir/Application.html
   # for more information on OTP Applications
   def start(_type, _args) do
+    Pleroma.HTML.compile_scrubbers()
     Pleroma.Config.DeprecationWarnings.warn()
     setup_instrumenters()
 

lib/pleroma/html.ex

@@ -3,6 +3,25 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.HTML do
+  # Scrubbers are compiled on boot so they can be configured in OTP releases
+  #  @on_load :compile_scrubbers
+
+  def compile_scrubbers do
+    dir = Path.join(:code.priv_dir(:pleroma), "scrubbers")
+
+    dir
+    |> File.ls!()
+    |> Enum.map(&Path.join(dir, &1))
+    |> Kernel.ParallelCompiler.compile()
+    |> case do
+      {:error, _errors, _warnings} ->
+        raise "Compiling scrubbers failed"
+
+      {:ok, _modules, _warnings} ->
+        :ok
+    end
+  end
+
   defp get_scrubbers(scrubber) when is_atom(scrubber), do: [scrubber]
   defp get_scrubbers(scrubbers) when is_list(scrubbers), do: scrubbers
   defp get_scrubbers(_), do: [Pleroma.HTML.Scrubber.Default]
@@ -99,216 +118,3 @@ def extract_first_external_url(object, content) do
     end)
   end
 end
-
-defmodule Pleroma.HTML.Scrubber.TwitterText do
-  @moduledoc """
-  An HTML scrubbing policy which limits to twitter-style text.  Only
-  paragraphs, breaks and links are allowed through the filter.
-  """
-
-  @valid_schemes Pleroma.Config.get([:uri_schemes, :valid_schemes], [])
-
-  require FastSanitize.Sanitizer.Meta
-  alias FastSanitize.Sanitizer.Meta
-
-  Meta.strip_comments()
-
-  # links
-  Meta.allow_tag_with_uri_attributes(:a, ["href", "data-user", "data-tag"], @valid_schemes)
-
-  Meta.allow_tag_with_this_attribute_values(:a, "class", [
-    "hashtag",
-    "u-url",
-    "mention",
-    "u-url mention",
-    "mention u-url"
-  ])
-
-  Meta.allow_tag_with_this_attribute_values(:a, "rel", [
-    "tag",
-    "nofollow",
-    "noopener",
-    "noreferrer"
-  ])
-
-  Meta.allow_tag_with_these_attributes(:a, ["name", "title"])
-
-  # paragraphs and linebreaks
-  Meta.allow_tag_with_these_attributes(:br, [])
-  Meta.allow_tag_with_these_attributes(:p, [])
-
-  # microformats
-  Meta.allow_tag_with_this_attribute_values(:span, "class", ["h-card"])
-  Meta.allow_tag_with_these_attributes(:span, [])
-
-  # allow inline images for custom emoji
-  if Pleroma.Config.get([:markup, :allow_inline_images]) do
-    # restrict img tags to http/https only, because of MediaProxy.
-    Meta.allow_tag_with_uri_attributes(:img, ["src"], ["http", "https"])
-
-    Meta.allow_tag_with_these_attributes(:img, [
-      "width",
-      "height",
-      "class",
-      "title",
-      "alt"
-    ])
-  end
-
-  Meta.strip_everything_not_covered()
-end
-
-defmodule Pleroma.HTML.Scrubber.Default do
-  @doc "The default HTML scrubbing policy: no "
-
-  require FastSanitize.Sanitizer.Meta
-  alias FastSanitize.Sanitizer.Meta
-
-  # credo:disable-for-previous-line
-  # No idea how to fix this one…
-
-  @valid_schemes Pleroma.Config.get([:uri_schemes, :valid_schemes], [])
-
-  Meta.strip_comments()
-
-  Meta.allow_tag_with_uri_attributes(:a, ["href", "data-user", "data-tag"], @valid_schemes)
-
-  Meta.allow_tag_with_this_attribute_values(:a, "class", [
-    "hashtag",
-    "u-url",
-    "mention",
-    "u-url mention",
-    "mention u-url"
-  ])
-
-  Meta.allow_tag_with_this_attribute_values(:a, "rel", [
-    "tag",
-    "nofollow",
-    "noopener",
-    "noreferrer",
-    "ugc"
-  ])
-
-  Meta.allow_tag_with_these_attributes(:a, ["name", "title"])
-
-  Meta.allow_tag_with_these_attributes(:abbr, ["title"])
-
-  Meta.allow_tag_with_these_attributes(:b, [])
-  Meta.allow_tag_with_these_attributes(:blockquote, [])
-  Meta.allow_tag_with_these_attributes(:br, [])
-  Meta.allow_tag_with_these_attributes(:code, [])
-  Meta.allow_tag_with_these_attributes(:del, [])
-  Meta.allow_tag_with_these_attributes(:em, [])
-  Meta.allow_tag_with_these_attributes(:i, [])
-  Meta.allow_tag_with_these_attributes(:li, [])
-  Meta.allow_tag_with_these_attributes(:ol, [])
-  Meta.allow_tag_with_these_attributes(:p, [])
-  Meta.allow_tag_with_these_attributes(:pre, [])
-  Meta.allow_tag_with_these_attributes(:strong, [])
-  Meta.allow_tag_with_these_attributes(:sub, [])
-  Meta.allow_tag_with_these_attributes(:sup, [])
-  Meta.allow_tag_with_these_attributes(:u, [])
-  Meta.allow_tag_with_these_attributes(:ul, [])
-
-  Meta.allow_tag_with_this_attribute_values(:span, "class", ["h-card"])
-  Meta.allow_tag_with_these_attributes(:span, [])
-
-  @allow_inline_images Pleroma.Config.get([:markup, :allow_inline_images])
-
-  if @allow_inline_images do
-    # restrict img tags to http/https only, because of MediaProxy.
-    Meta.allow_tag_with_uri_attributes(:img, ["src"], ["http", "https"])
-
-    Meta.allow_tag_with_these_attributes(:img, [
-      "width",
-      "height",
-      "class",
-      "title",
-      "alt"
-    ])
-  end
-
-  if Pleroma.Config.get([:markup, :allow_tables]) do
-    Meta.allow_tag_with_these_attributes(:table, [])
-    Meta.allow_tag_with_these_attributes(:tbody, [])
-    Meta.allow_tag_with_these_attributes(:td, [])
-    Meta.allow_tag_with_these_attributes(:th, [])
-    Meta.allow_tag_with_these_attributes(:thead, [])
-    Meta.allow_tag_with_these_attributes(:tr, [])
-  end
-
-  if Pleroma.Config.get([:markup, :allow_headings]) do
-    Meta.allow_tag_with_these_attributes(:h1, [])
-    Meta.allow_tag_with_these_attributes(:h2, [])
-    Meta.allow_tag_with_these_attributes(:h3, [])
-    Meta.allow_tag_with_these_attributes(:h4, [])
-    Meta.allow_tag_with_these_attributes(:h5, [])
-  end
-
-  if Pleroma.Config.get([:markup, :allow_fonts]) do
-    Meta.allow_tag_with_these_attributes(:font, ["face"])
-  end
-
-  Meta.strip_everything_not_covered()
-end
-
-defmodule Pleroma.HTML.Transform.MediaProxy do
-  @moduledoc "Transforms inline image URIs to use MediaProxy."
-
-  alias Pleroma.Web.MediaProxy
-
-  def before_scrub(html), do: html
-
-  def scrub_attribute(:img, {"src", "http" <> target}) do
-    media_url =
-      ("http" <> target)
-      |> MediaProxy.url()
-
-    {"src", media_url}
-  end
-
-  def scrub_attribute(_tag, attribute), do: attribute
-
-  def scrub({:img, attributes, children}) do
-    attributes =
-      attributes
-      |> Enum.map(fn attr -> scrub_attribute(:img, attr) end)
-      |> Enum.reject(&is_nil(&1))
-
-    {:img, attributes, children}
-  end
-
-  def scrub({:comment, _text, _children}), do: ""
-
-  def scrub({tag, attributes, children}), do: {tag, attributes, children}
-  def scrub({_tag, children}), do: children
-  def scrub(text), do: text
-end
-
-defmodule Pleroma.HTML.Scrubber.LinksOnly do
-  @moduledoc """
-  An HTML scrubbing policy which limits to links only.
-  """
-
-  @valid_schemes Pleroma.Config.get([:uri_schemes, :valid_schemes], [])
-
-  require FastSanitize.Sanitizer.Meta
-  alias FastSanitize.Sanitizer.Meta
-
-  Meta.strip_comments()
-
-  # links
-  Meta.allow_tag_with_uri_attributes(:a, ["href"], @valid_schemes)
-
-  Meta.allow_tag_with_this_attribute_values(:a, "rel", [
-    "tag",
-    "nofollow",
-    "noopener",
-    "noreferrer",
-    "me",
-    "ugc"
-  ])
-
-  Meta.allow_tag_with_these_attributes(:a, ["name", "title"])
-  Meta.strip_everything_not_covered()
-end

priv/scrubbers/default.ex

@@ -0,0 +1,93 @@
+defmodule Pleroma.HTML.Scrubber.Default do
+  @doc "The default HTML scrubbing policy: no "
+
+  require FastSanitize.Sanitizer.Meta
+  alias FastSanitize.Sanitizer.Meta
+
+  # credo:disable-for-previous-line
+  # No idea how to fix this one…
+
+  @valid_schemes Pleroma.Config.get([:uri_schemes, :valid_schemes], [])
+
+  Meta.strip_comments()
+
+  Meta.allow_tag_with_uri_attributes(:a, ["href", "data-user", "data-tag"], @valid_schemes)
+
+  Meta.allow_tag_with_this_attribute_values(:a, "class", [
+    "hashtag",
+    "u-url",
+    "mention",
+    "u-url mention",
+    "mention u-url"
+  ])
+
+  Meta.allow_tag_with_this_attribute_values(:a, "rel", [
+    "tag",
+    "nofollow",
+    "noopener",
+    "noreferrer",
+    "ugc"
+  ])
+
+  Meta.allow_tag_with_these_attributes(:a, ["name", "title"])
+
+  Meta.allow_tag_with_these_attributes(:abbr, ["title"])
+
+  Meta.allow_tag_with_these_attributes(:b, [])
+  Meta.allow_tag_with_these_attributes(:blockquote, [])
+  Meta.allow_tag_with_these_attributes(:br, [])
+  Meta.allow_tag_with_these_attributes(:code, [])
+  Meta.allow_tag_with_these_attributes(:del, [])
+  Meta.allow_tag_with_these_attributes(:em, [])
+  Meta.allow_tag_with_these_attributes(:i, [])
+  Meta.allow_tag_with_these_attributes(:li, [])
+  Meta.allow_tag_with_these_attributes(:ol, [])
+  Meta.allow_tag_with_these_attributes(:p, [])
+  Meta.allow_tag_with_these_attributes(:pre, [])
+  Meta.allow_tag_with_these_attributes(:strong, [])
+  Meta.allow_tag_with_these_attributes(:sub, [])
+  Meta.allow_tag_with_these_attributes(:sup, [])
+  Meta.allow_tag_with_these_attributes(:u, [])
+  Meta.allow_tag_with_these_attributes(:ul, [])
+
+  Meta.allow_tag_with_this_attribute_values(:span, "class", ["h-card"])
+  Meta.allow_tag_with_these_attributes(:span, [])
+
+  @allow_inline_images Pleroma.Config.get([:markup, :allow_inline_images])
+
+  if @allow_inline_images do
+    # restrict img tags to http/https only, because of MediaProxy.
+    Meta.allow_tag_with_uri_attributes(:img, ["src"], ["http", "https"])
+
+    Meta.allow_tag_with_these_attributes(:img, [
+      "width",
+      "height",
+      "class",
+      "title",
+      "alt"
+    ])
+  end
+
+  if Pleroma.Config.get([:markup, :allow_tables]) do
+    Meta.allow_tag_with_these_attributes(:table, [])
+    Meta.allow_tag_with_these_attributes(:tbody, [])
+    Meta.allow_tag_with_these_attributes(:td, [])
+    Meta.allow_tag_with_these_attributes(:th, [])
+    Meta.allow_tag_with_these_attributes(:thead, [])
+    Meta.allow_tag_with_these_attributes(:tr, [])
+  end
+
+  if Pleroma.Config.get([:markup, :allow_headings]) do
+    Meta.allow_tag_with_these_attributes(:h1, [])
+    Meta.allow_tag_with_these_attributes(:h2, [])
+    Meta.allow_tag_with_these_attributes(:h3, [])
+    Meta.allow_tag_with_these_attributes(:h4, [])
+    Meta.allow_tag_with_these_attributes(:h5, [])
+  end
+
+  if Pleroma.Config.get([:markup, :allow_fonts]) do
+    Meta.allow_tag_with_these_attributes(:font, ["face"])
+  end
+
+  Meta.strip_everything_not_covered()
+end

priv/scrubbers/links_only.ex

@@ -0,0 +1,27 @@
+defmodule Pleroma.HTML.Scrubber.LinksOnly do
+  @moduledoc """
+  An HTML scrubbing policy which limits to links only.
+  """
+
+  @valid_schemes Pleroma.Config.get([:uri_schemes, :valid_schemes], [])
+
+  require FastSanitize.Sanitizer.Meta
+  alias FastSanitize.Sanitizer.Meta
+
+  Meta.strip_comments()
+
+  # links
+  Meta.allow_tag_with_uri_attributes(:a, ["href"], @valid_schemes)
+
+  Meta.allow_tag_with_this_attribute_values(:a, "rel", [
+    "tag",
+    "nofollow",
+    "noopener",
+    "noreferrer",
+    "me",
+    "ugc"
+  ])
+
+  Meta.allow_tag_with_these_attributes(:a, ["name", "title"])
+  Meta.strip_everything_not_covered()
+end

priv/scrubbers/media_proxy.ex

@@ -0,0 +1,32 @@
+defmodule Pleroma.HTML.Transform.MediaProxy do
+  @moduledoc "Transforms inline image URIs to use MediaProxy."
+
+  alias Pleroma.Web.MediaProxy
+
+  def before_scrub(html), do: html
+
+  def scrub_attribute(:img, {"src", "http" <> target}) do
+    media_url =
+      ("http" <> target)
+      |> MediaProxy.url()
+
+    {"src", media_url}
+  end
+
+  def scrub_attribute(_tag, attribute), do: attribute
+
+  def scrub({:img, attributes, children}) do
+    attributes =
+      attributes
+      |> Enum.map(fn attr -> scrub_attribute(:img, attr) end)
+      |> Enum.reject(&is_nil(&1))
+
+    {:img, attributes, children}
+  end
+
+  def scrub({:comment, _text, _children}), do: ""
+
+  def scrub({tag, attributes, children}), do: {tag, attributes, children}
+  def scrub({_tag, children}), do: children
+  def scrub(text), do: text
+end

priv/scrubbers/twitter_text.ex

@@ -0,0 +1,57 @@
+defmodule Pleroma.HTML.Scrubber.TwitterText do
+  @moduledoc """
+  An HTML scrubbing policy which limits to twitter-style text.  Only
+  paragraphs, breaks and links are allowed through the filter.
+  """
+
+  @valid_schemes Pleroma.Config.get([:uri_schemes, :valid_schemes], [])
+
+  require FastSanitize.Sanitizer.Meta
+  alias FastSanitize.Sanitizer.Meta
+
+  Meta.strip_comments()
+
+  # links
+  Meta.allow_tag_with_uri_attributes(:a, ["href", "data-user", "data-tag"], @valid_schemes)
+
+  Meta.allow_tag_with_this_attribute_values(:a, "class", [
+    "hashtag",
+    "u-url",
+    "mention",
+    "u-url mention",
+    "mention u-url"
+  ])
+
+  Meta.allow_tag_with_this_attribute_values(:a, "rel", [
+    "tag",
+    "nofollow",
+    "noopener",
+    "noreferrer"
+  ])
+
+  Meta.allow_tag_with_these_attributes(:a, ["name", "title"])
+
+  # paragraphs and linebreaks
+  Meta.allow_tag_with_these_attributes(:br, [])
+  Meta.allow_tag_with_these_attributes(:p, [])
+
+  # microformats
+  Meta.allow_tag_with_this_attribute_values(:span, "class", ["h-card"])
+  Meta.allow_tag_with_these_attributes(:span, [])
+
+  # allow inline images for custom emoji
+  if Pleroma.Config.get([:markup, :allow_inline_images]) do
+    # restrict img tags to http/https only, because of MediaProxy.
+    Meta.allow_tag_with_uri_attributes(:img, ["src"], ["http", "https"])
+
+    Meta.allow_tag_with_these_attributes(:img, [
+      "width",
+      "height",
+      "class",
+      "title",
+      "alt"
+    ])
+  end
+
+  Meta.strip_everything_not_covered()
+end