Merge remote-tracking branch 'upstream/develop' into neckbeard

docs: Be more explicit about the level of compatibility of OTP releases

See merge request pleroma/pleroma!3849

docs/installation/otp_en.md

@@ -2,15 +2,16 @@
 
 {! backend/installation/otp_vs_from_source.include !}
 
-This guide covers a installation using an OTP release. To install Pleroma from source, please check out the corresponding guide for your distro.
+This guide covers a installation using OTP releases as built by the Pleroma project, it is meant as a fallback to distribution packages/recipes which are the preferred installation method.  
+To install Pleroma from source, please check out the corresponding guide for your distro.
 
 ## Pre-requisites
-* A machine running Linux with GNU (e.g. Debian, Ubuntu) or musl (e.g. Alpine) libc and `x86_64`, `aarch64` or `armv7l` CPU, you have root access to. If you are not sure if it's compatible see [Detecting flavour section](#detecting-flavour) below
+* A machine you have root access to running Debian GNU/Linux or compatible (eg. Ubuntu), or Alpine on `x86_64`, `aarch64` or `armv7l` CPU. If you are not sure what you are running see [Detecting flavour section](#detecting-flavour) below
 * A (sub)domain pointed to the machine
 
-You will be running commands as root. If you aren't root already, please elevate your privileges by executing `sudo su`/`su`.
+You will be running commands as root. If you aren't root already, please elevate your privileges by executing `sudo -i`/`su`.
 
-While in theory OTP releases are possbile to install on any compatible machine, for the sake of simplicity this guide focuses only on Debian/Ubuntu and Alpine.
+Similarly to other binaries, OTP releases tend to be only compatible with the distro they are built on, as such this guide focuses only on Debian/Ubuntu and Alpine.
 
 ### Detecting flavour
 
@@ -19,7 +20,7 @@ Paste the following into the shell:
 arch="$(uname -m)";if [ "$arch" = "x86_64" ];then arch="amd64";elif [ "$arch" = "armv7l" ];then arch="arm";elif [ "$arch" = "aarch64" ];then arch="arm64";else echo "Unsupported arch: $arch">&2;fi;if getconf GNU_LIBC_VERSION>/dev/null;then libc_postfix="";elif [ "$(ldd 2>&1|head -c 9)" = "musl libc" ];then libc_postfix="-musl";elif [ "$(find /lib/libc.musl*|wc -l)" ];then libc_postfix="-musl";else echo "Unsupported libc">&2;fi;echo "$arch$libc_postfix"
 ```
 
-If your platform is supported the output will contain the flavour string, you will need it later. If not, this just means that we don't build releases for your platform, you can still try installing from source.
+This should give your flavour string. If not this just means that we don't build releases for your platform, you can still try installing from source.
 
 ### Installing the required packages
 

lib/pleroma/emoji.ex

@@ -51,6 +51,8 @@ defmodule Pleroma.Emoji do
   @doc "Returns the path of the emoji `name`."
   @spec get(String.t()) :: String.t() | nil
   def get(name) do
+    name = maybe_strip_name(name)
+
     case :ets.lookup(@ets, name) do
       [{_, path}] -> path
       _ -> nil
@@ -139,6 +141,57 @@ defmodule Pleroma.Emoji do
 
   def is_unicode_emoji?(_), do: false
 
+  @emoji_regex ~r/:[A-Za-z0-9_-]+(@.+)?:/
+
+  def is_custom_emoji?(s) when is_binary(s), do: Regex.match?(@emoji_regex, s)
+
+  def is_custom_emoji?(_), do: false
+
+  def maybe_strip_name(name) when is_binary(name), do: String.trim(name, ":")
+
+  def maybe_strip_name(name), do: name
+
+  def maybe_quote(name) when is_binary(name) do
+    if is_unicode_emoji?(name) do
+      name
+    else
+      if String.starts_with?(name, ":") do
+        name
+      else
+        ":#{name}:"
+      end
+    end
+  end
+
+  def maybe_quote(name), do: name
+
+  def emoji_url(%{"type" => "EmojiReact", "content" => _, "tag" => []}), do: nil
+
+  def emoji_url(%{"type" => "EmojiReact", "content" => emoji, "tag" => tags}) do
+    emoji = maybe_strip_name(emoji)
+
+    tag =
+      tags
+      |> Enum.find(fn tag ->
+        tag["type"] == "Emoji" && !is_nil(tag["name"]) && tag["name"] == emoji
+      end)
+
+    if is_nil(tag) do
+      nil
+    else
+      tag
+      |> Map.get("icon")
+      |> Map.get("url")
+    end
+  end
+
+  def emoji_url(_), do: nil
+
+  def emoji_name_with_instance(name, url) do
+    url = url |> URI.parse() |> Map.get(:host)
+    "#{name}@#{url}"
+  end
+
   emoji_qualification_map =
     emojis
     |> Enum.filter(&String.contains?(&1, "\uFE0F"))

lib/pleroma/web/activity_pub/builder.ex

@@ -16,6 +16,7 @@ defmodule Pleroma.Web.ActivityPub.Builder do
   alias Pleroma.Web.ActivityPub.Utils
   alias Pleroma.Web.ActivityPub.Visibility
   alias Pleroma.Web.CommonAPI.ActivityDraft
+  alias Pleroma.Web.Endpoint
 
   require Pleroma.Constants
 
@@ -54,13 +55,87 @@ defmodule Pleroma.Web.ActivityPub.Builder do
     {:ok, data, []}
   end
 
+  defp unicode_emoji_react(_object, data, emoji) do
+    data
+    |> Map.put("content", emoji)
+    |> Map.put("type", "EmojiReact")
+  end
+
+  defp add_emoji_content(data, emoji, url) do
+    tag = [
+      %{
+        "id" => url,
+        "type" => "Emoji",
+        "name" => Emoji.maybe_quote(emoji),
+        "icon" => %{
+          "type" => "Image",
+          "url" => url
+        }
+      }
+    ]
+
+    data
+    |> Map.put("content", Emoji.maybe_quote(emoji))
+    |> Map.put("type", "EmojiReact")
+    |> Map.put("tag", tag)
+  end
+
+  defp remote_custom_emoji_react(
+         %{data: %{"reactions" => existing_reactions}},
+         data,
+         emoji
+       ) do
+    [emoji_code, instance] = String.split(Emoji.maybe_strip_name(emoji), "@")
+
+    matching_reaction =
+      Enum.find(
+        existing_reactions,
+        fn [name, _, url] ->
+          if url != nil do
+            url = URI.parse(url)
+            url.host == instance && name == emoji_code
+          end
+        end
+      )
+
+    if matching_reaction do
+      [name, _, url] = matching_reaction
+      add_emoji_content(data, name, url)
+    else
+      {:error, "Could not react"}
+    end
+  end
+
+  defp remote_custom_emoji_react(_object, _data, _emoji) do
+    {:error, "Could not react"}
+  end
+
+  defp local_custom_emoji_react(data, emoji) do
+    with %{file: path} = emojo <- Emoji.get(emoji) do
+      url = "#{Endpoint.url()}#{path}"
+      add_emoji_content(data, emojo.code, url)
+    else
+      _ -> {:error, "Emoji does not exist"}
+    end
+  end
+
+  defp custom_emoji_react(object, data, emoji) do
+    if String.contains?(emoji, "@") do
+      remote_custom_emoji_react(object, data, emoji)
+    else
+      local_custom_emoji_react(data, emoji)
+    end
+  end
+
   @spec emoji_react(User.t(), Object.t(), String.t()) :: {:ok, map(), keyword()}
   def emoji_react(actor, object, emoji) do
     with {:ok, data, meta} <- object_action(actor, object) do
       data =
-        data
-        |> Map.put("content", emoji)
-        |> Map.put("type", "EmojiReact")
+        if Emoji.is_unicode_emoji?(emoji) do
+          unicode_emoji_react(object, data, emoji)
+        else
+          custom_emoji_react(object, data, emoji)
+        end
 
       {:ok, data, meta}
     end

lib/pleroma/web/activity_pub/object_validators/emoji_react_validator.ex

@@ -5,8 +5,10 @@
 defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator do
   use Ecto.Schema
 
+  alias Pleroma.Emoji
   alias Pleroma.Object
   alias Pleroma.Web.ActivityPub.ObjectValidators.CommonFixes
+  alias Pleroma.Web.ActivityPub.ObjectValidators.TagValidator
 
   import Ecto.Changeset
   import Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations
@@ -19,6 +21,7 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator do
         import Elixir.Pleroma.Web.ActivityPub.ObjectValidators.CommonFields
         message_fields()
         activity_fields()
+        embeds_many(:tag, TagValidator)
       end
     end
 
@@ -43,7 +46,8 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator do
 
   def changeset(struct, data) do
     struct
-    |> cast(data, __schema__(:fields))
+    |> cast(data, __schema__(:fields) -- [:tag])
+    |> cast_embed(:tag)
   end
 
   defp fix(data) do
@@ -53,12 +57,16 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator do
       |> CommonFixes.fix_actor()
       |> CommonFixes.fix_activity_addressing()
 
-    with %Object{} = object <- Object.normalize(data["object"]) do
-      data
-      |> CommonFixes.fix_activity_context(object)
-      |> CommonFixes.fix_object_action_recipients(object)
-    else
-      _ -> data
+    data = Map.put_new(data, "tag", [])
+
+    case Object.normalize(data["object"]) do
+      %Object{} = object ->
+        data
+        |> CommonFixes.fix_activity_context(object)
+        |> CommonFixes.fix_object_action_recipients(object)
+
+      _ ->
+        data
     end
   end
 
@@ -82,11 +90,31 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator do
   defp validate_emoji(cng) do
     content = get_field(cng, :content)
 
-    if Pleroma.Emoji.is_unicode_emoji?(content) do
+    if Emoji.is_unicode_emoji?(content) || Emoji.is_custom_emoji?(content) do
       cng
     else
       cng
-      |> add_error(:content, "must be a single character emoji")
+      |> add_error(:content, "is not a valid emoji")
+    end
+  end
+
+  defp maybe_validate_tag_presence(cng) do
+    content = get_field(cng, :content)
+
+    if Emoji.is_unicode_emoji?(content) do
+      cng
+    else
+      tag = get_field(cng, :tag)
+      emoji_name = Emoji.maybe_strip_name(content)
+
+      case tag do
+        [%{name: ^emoji_name, type: "Emoji", icon: %{url: _}}] ->
+          cng
+
+        _ ->
+          cng
+          |> add_error(:tag, "does not contain an Emoji tag")
+      end
     end
   end
 
@@ -97,5 +125,6 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactValidator do
     |> validate_actor_presence()
     |> validate_object_presence()
     |> validate_emoji()
+    |> maybe_validate_tag_presence()
   end
 end

lib/pleroma/web/activity_pub/utils.ex

@@ -325,21 +325,29 @@ defmodule Pleroma.Web.ActivityPub.Utils do
           {:ok, Object.t()} | {:error, Ecto.Changeset.t()}
 
   def add_emoji_reaction_to_object(
-        %Activity{data: %{"content" => emoji, "actor" => actor}},
+        %Activity{data: %{"content" => emoji, "actor" => actor}} = activity,
         object
       ) do
     reactions = get_cached_emoji_reactions(object)
+    emoji = Pleroma.Emoji.maybe_strip_name(emoji)
+    url = maybe_emoji_url(emoji, activity)
 
     new_reactions =
-      case Enum.find_index(reactions, fn [candidate, _] -> emoji == candidate end) do
+      case Enum.find_index(reactions, fn [candidate, _, candidate_url] ->
+             if is_nil(candidate_url) do
+               emoji == candidate
+             else
+               url == candidate_url
+             end
+           end) do
         nil ->
-          reactions ++ [[emoji, [actor]]]
+          reactions ++ [[emoji, [actor], url]]
 
         index ->
           List.update_at(
             reactions,
             index,
-            fn [emoji, users] -> [emoji, Enum.uniq([actor | users])] end
+            fn [emoji, users, url] -> [emoji, Enum.uniq([actor | users]), url] end
           )
       end
 
@@ -348,18 +356,40 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     update_element_in_object("reaction", new_reactions, object, count)
   end
 
+  defp maybe_emoji_url(
+         name,
+         %Activity{
+           data: %{
+             "tag" => [
+               %{"type" => "Emoji", "name" => name, "icon" => %{"url" => url}}
+             ]
+           }
+         }
+       ),
+       do: url
+
+  defp maybe_emoji_url(_, _), do: nil
+
   def emoji_count(reactions_list) do
-    Enum.reduce(reactions_list, 0, fn [_, users], acc -> acc + length(users) end)
+    Enum.reduce(reactions_list, 0, fn [_, users, _], acc -> acc + length(users) end)
   end
 
   def remove_emoji_reaction_from_object(
-        %Activity{data: %{"content" => emoji, "actor" => actor}},
+        %Activity{data: %{"content" => emoji, "actor" => actor}} = activity,
         object
       ) do
+    emoji = Pleroma.Emoji.maybe_strip_name(emoji)
     reactions = get_cached_emoji_reactions(object)
+    url = maybe_emoji_url(emoji, activity)
 
     new_reactions =
-      case Enum.find_index(reactions, fn [candidate, _] -> emoji == candidate end) do
+      case Enum.find_index(reactions, fn [candidate, _, candidate_url] ->
+             if is_nil(candidate_url) do
+               emoji == candidate
+             else
+               url == candidate_url
+             end
+           end) do
         nil ->
           reactions
 
@@ -367,9 +397,9 @@ defmodule Pleroma.Web.ActivityPub.Utils do
           List.update_at(
             reactions,
             index,
-            fn [emoji, users] -> [emoji, List.delete(users, actor)] end
+            fn [emoji, users, url] -> [emoji, List.delete(users, actor), url] end
           )
-          |> Enum.reject(fn [_, users] -> Enum.empty?(users) end)
+          |> Enum.reject(fn [_, users, _] -> Enum.empty?(users) end)
       end
 
     count = emoji_count(new_reactions)
@@ -489,17 +519,37 @@ defmodule Pleroma.Web.ActivityPub.Utils do
 
   def get_latest_reaction(internal_activity_id, %{ap_id: ap_id}, emoji) do
     %{data: %{"object" => object_ap_id}} = Activity.get_by_id(internal_activity_id)
+    emoji = Pleroma.Emoji.maybe_quote(emoji)
 
     "EmojiReact"
     |> Activity.Queries.by_type()
     |> where(actor: ^ap_id)
-    |> where([activity], fragment("?->>'content' = ?", activity.data, ^emoji))
+    |> custom_emoji_discriminator(emoji)
     |> Activity.Queries.by_object_id(object_ap_id)
     |> order_by([activity], fragment("? desc nulls last", activity.id))
     |> limit(1)
     |> Repo.one()
   end
 
+  defp custom_emoji_discriminator(query, emoji) do
+    if String.contains?(emoji, "@") do
+      stripped = Pleroma.Emoji.maybe_strip_name(emoji)
+      [name, domain] = String.split(stripped, "@")
+      domain_pattern = "%/" <> domain <> "/%"
+      emoji_pattern = Pleroma.Emoji.maybe_quote(name)
+
+      query
+      |> where([activity], fragment("?->>'content' = ?
+        AND EXISTS (
+          SELECT FROM jsonb_array_elements(?->'tag') elem
+          WHERE elem->>'id' ILIKE ?
+        )", activity.data, ^emoji_pattern, activity.data, ^domain_pattern))
+    else
+      query
+      |> where([activity], fragment("?->>'content' = ?", activity.data, ^emoji))
+    end
+  end
+
   #### Announce-related helpers
 
   @doc """

lib/pleroma/web/mastodon_api/views/instance_view.ex

@@ -92,6 +92,7 @@ defmodule Pleroma.Web.MastodonAPI.InstanceView do
         "safe_dm_mentions"
       end,
       "pleroma_emoji_reactions",
+      "pleroma_custom_emoji_reactions",
       "pleroma_chat_messages",
       if Config.get([:instance, :show_reactions]) do
         "exposable_reactions"

lib/pleroma/web/mastodon_api/views/notification_view.ex

@@ -17,6 +17,7 @@ defmodule Pleroma.Web.MastodonAPI.NotificationView do
   alias Pleroma.Web.MastodonAPI.AccountView
   alias Pleroma.Web.MastodonAPI.NotificationView
   alias Pleroma.Web.MastodonAPI.StatusView
+  alias Pleroma.Web.MediaProxy
   alias Pleroma.Web.PleromaAPI.Chat.MessageReferenceView
 
   defp object_id_for(%{data: %{"object" => %{"id" => id}}}) when is_binary(id), do: id
@@ -145,7 +146,9 @@ defmodule Pleroma.Web.MastodonAPI.NotificationView do
   end
 
   defp put_emoji(response, activity) do
-    Map.put(response, :emoji, activity.data["content"])
+    response
+    |> Map.put(:emoji, activity.data["content"])
+    |> Map.put(:emoji_url, MediaProxy.url(Pleroma.Emoji.emoji_url(activity.data)))
   end
 
   defp put_chat_message(response, activity, reading_user, opts) do

lib/pleroma/web/mastodon_api/views/status_view.ex

@@ -340,8 +340,8 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
         opts[:for],
         Map.get(opts, :with_muted, false)
       )
-      |> Stream.map(fn {emoji, users} ->
-        build_emoji_map(emoji, users, opts[:for])
+      |> Stream.map(fn {emoji, users, url} ->
+        build_emoji_map(emoji, users, url, opts[:for])
       end)
       |> Enum.to_list()
 
@@ -702,11 +702,13 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
     end
   end
 
-  defp build_emoji_map(emoji, users, current_user) do
+  defp build_emoji_map(emoji, users, url, current_user) do
     %{
-      name: emoji,
+      name: Pleroma.Web.PleromaAPI.EmojiReactionView.emoji_name(emoji, url),
       count: length(users),
-      me: !!(current_user && current_user.ap_id in users)
+      url: MediaProxy.url(url),
+      me: !!(current_user && current_user.ap_id in users),
+      account_ids: Enum.map(users, fn user -> User.get_cached_by_ap_id(user).id end)
     }
   end
 

lib/pleroma/web/metadata/providers/rel_me.ex

@@ -8,12 +8,20 @@ defmodule Pleroma.Web.Metadata.Providers.RelMe do
 
   @impl Provider
   def build_tags(%{user: user}) do
-    bio_tree = Floki.parse_fragment!(user.bio)
+    profile_tree =
+      user.bio
+      |> append_fields_tag(user.fields)
+      |> Floki.parse_fragment!()
 
-    (Floki.attribute(bio_tree, "link[rel~=me]", "href") ++
-       Floki.attribute(bio_tree, "a[rel~=me]", "href"))
+    (Floki.attribute(profile_tree, "link[rel~=me]", "href") ++
+       Floki.attribute(profile_tree, "a[rel~=me]", "href"))
     |> Enum.map(fn link ->
       {:link, [rel: "me", href: link], []}
     end)
   end
+
+  defp append_fields_tag(bio, fields) do
+    fields
+    |> Enum.reduce(bio, fn %{"value" => v}, res -> res <> v end)
+  end
 end

lib/pleroma/web/pleroma_api/controllers/emoji_reaction_controller.ex

@@ -50,29 +50,35 @@ defmodule Pleroma.Web.PleromaAPI.EmojiReactionController do
           if not with_muted, do: User.cached_muted_users_ap_ids(user), else: []
       end
 
-    filter_emoji = fn emoji, users ->
+    filter_emoji = fn emoji, users, url ->
       case Enum.reject(users, &(&1 in exclude_ap_ids)) do
         [] -> nil
-        users -> {emoji, users}
+        users -> {emoji, users, url}
       end
     end
 
     reactions
     |> Stream.map(fn
-      [emoji, users] when is_list(users) -> filter_emoji.(emoji, users)
-      {emoji, users} when is_list(users) -> filter_emoji.(emoji, users)
+      [emoji, users, url] when is_list(users) -> filter_emoji.(emoji, users, url)
+      {emoji, users, url} when is_list(users) -> filter_emoji.(emoji, users, url)
+      {emoji, users} when is_list(users) -> filter_emoji.(emoji, users, nil)
       _ -> nil
     end)
     |> Stream.reject(&is_nil/1)
   end
 
   defp filter(reactions, %{emoji: emoji}) when is_binary(emoji) do
-    Enum.filter(reactions, fn [e, _] -> e == emoji end)
+    Enum.filter(reactions, fn [e, _, _] -> e == emoji end)
   end
 
   defp filter(reactions, _), do: reactions
 
   def create(%{assigns: %{user: user}} = conn, %{id: activity_id, emoji: emoji}) do
+    emoji =
+      emoji
+      |> Pleroma.Emoji.fully_qualify_emoji()
+      |> Pleroma.Emoji.maybe_quote()
+
     with {:ok, _activity} <- CommonAPI.react_with_emoji(activity_id, user, emoji) do
       activity = Activity.get_by_id(activity_id)
 
@@ -83,6 +89,11 @@ defmodule Pleroma.Web.PleromaAPI.EmojiReactionController do
   end
 
   def delete(%{assigns: %{user: user}} = conn, %{id: activity_id, emoji: emoji}) do
+    emoji =
+      emoji
+      |> Pleroma.Emoji.fully_qualify_emoji()
+      |> Pleroma.Emoji.maybe_quote()
+
     with {:ok, _activity} <- CommonAPI.unreact_with_emoji(activity_id, user, emoji) do
       activity = Activity.get_by_id(activity_id)
 

lib/pleroma/web/pleroma_api/views/emoji_reaction_view.ex

@@ -7,17 +7,30 @@ defmodule Pleroma.Web.PleromaAPI.EmojiReactionView do
 
   alias Pleroma.Web.MastodonAPI.AccountView
 
+  def emoji_name(emoji, nil), do: emoji
+
+  def emoji_name(emoji, url) do
+    url = URI.parse(url)
+
+    if url.host == Pleroma.Web.Endpoint.host() do
+      emoji
+    else
+      "#{emoji}@#{url.host}"
+    end
+  end
+
   def render("index.json", %{emoji_reactions: emoji_reactions} = opts) do
     render_many(emoji_reactions, __MODULE__, "show.json", opts)
   end
 
-  def render("show.json", %{emoji_reaction: {emoji, user_ap_ids}, user: user}) do
+  def render("show.json", %{emoji_reaction: {emoji, user_ap_ids, url}, user: user}) do
     users = fetch_users(user_ap_ids)
 
     %{
-      name: emoji,
+      name: emoji_name(emoji, url),
       count: length(users),
       accounts: render(AccountView, "index.json", users: users, for: user),
+      url: Pleroma.Web.MediaProxy.url(url),
       me: !!(user && user.ap_id in user_ap_ids)
     }
   end

test/fixtures/custom-emoji-reaction.json

@@ -0,0 +1,28 @@
+{
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    "https://w3id.org/security/v1",
+    {
+      "Hashtag": "as:Hashtag"
+    }
+  ],
+  "type": "Like",
+  "id": "https://misskey.local.live/likes/917ocsybgp",
+  "actor": "https://misskey.local.live/users/8x8yep20u2",
+  "object": "https://pleroma.local.live/objects/89937a53-2692-4631-bb62-770091267391",
+  "content": ":hanapog:",
+  "_misskey_reaction": ":hanapog:",
+  "tag": [
+    {
+      "id": "https://misskey.local.live/emojis/hanapog",
+      "type": "Emoji",
+      "name": ":hanapog:",
+      "updated": "2022-06-07T12:00:05.773Z",
+      "icon": {
+        "type": "Image",
+        "mediaType": "image/png",
+        "url": "https://misskey.local.live/files/webpublic-8f8a9768-7264-4171-88d6-2356aabeadcd"
+      }
+    }
+  ]
+}

test/pleroma/web/activity_pub/object_validators/emoji_react_handling_test.exs

@@ -38,16 +38,70 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.EmojiReactHandlingTest do
       assert {:content, {"can't be blank", [validation: :required]}} in cng.errors
     end
 
-    test "it is not valid with a non-emoji content field", %{valid_emoji_react: valid_emoji_react} do
+    test "it is valid when custom emoji is used", %{valid_emoji_react: valid_emoji_react} do
       without_emoji_content =
         valid_emoji_react
-        |> Map.put("content", "x")
+        |> Map.put("content", ":hello:")
+        |> Map.put("tag", [
+          %{
+            "type" => "Emoji",
+            "name" => ":hello:",
+            "icon" => %{"url" => "http://somewhere", "type" => "Image"}
+          }
+        ])
+
+      {:ok, _, _} = ObjectValidator.validate(without_emoji_content, [])
+    end
+
+    test "it is not valid when custom emoji don't have a matching tag", %{
+      valid_emoji_react: valid_emoji_react
+    } do
+      without_emoji_content =
+        valid_emoji_react
+        |> Map.put("content", ":hello:")
+        |> Map.put("tag", [
+          %{
+            "type" => "Emoji",
+            "name" => ":whoops:",
+            "icon" => %{"url" => "http://somewhere", "type" => "Image"}
+          }
+        ])
 
       {:error, cng} = ObjectValidator.validate(without_emoji_content, [])
 
       refute cng.valid?
 
-      assert {:content, {"must be a single character emoji", []}} in cng.errors
+      assert {:tag, {"does not contain an Emoji tag", []}} in cng.errors
+    end
+
+    test "it is not valid when custom emoji have no tags", %{
+      valid_emoji_react: valid_emoji_react
+    } do
+      without_emoji_content =
+        valid_emoji_react
+        |> Map.put("content", ":hello:")
+        |> Map.put("tag", [])
+
+      {:error, cng} = ObjectValidator.validate(without_emoji_content, [])
+
+      refute cng.valid?
+
+      assert {:tag, {"does not contain an Emoji tag", []}} in cng.errors
+    end
+
+    test "it is not valid when custom emoji doesn't match a shortcode format", %{
+      valid_emoji_react: valid_emoji_react
+    } do
+      without_emoji_content =
+        valid_emoji_react
+        |> Map.put("content", "hello")
+        |> Map.put("tag", [])
+
+      {:error, cng} = ObjectValidator.validate(without_emoji_content, [])
+
+      refute cng.valid?
+
+      assert {:tag, {"does not contain an Emoji tag", []}} in cng.errors
     end
   end
 end

test/pleroma/web/activity_pub/side_effects_test.exs

@@ -453,7 +453,7 @@ defmodule Pleroma.Web.ActivityPub.SideEffectsTest do
       object = Object.get_by_ap_id(emoji_react.data["object"])
 
       assert object.data["reaction_count"] == 1
-      assert ["👌", [user.ap_id]] in object.data["reactions"]
+      assert ["👌", [user.ap_id], nil] in object.data["reactions"]
     end
 
     test "creates a notification", %{emoji_react: emoji_react, poster: poster} do

test/pleroma/web/activity_pub/transmogrifier/emoji_react_handling_test.exs

@@ -34,7 +34,56 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier.EmojiReactHandlingTest do
     object = Object.get_by_ap_id(data["object"])
 
     assert object.data["reaction_count"] == 1
-    assert match?([["👌", _]], object.data["reactions"])
+    assert match?([["👌", _, nil]], object.data["reactions"])
+  end
+
+  test "it works for incoming custom emoji reactions" do
+    user = insert(:user)
+    other_user = insert(:user, local: false)
+    {:ok, activity} = CommonAPI.post(user, %{status: "hello"})
+
+    data =
+      File.read!("test/fixtures/custom-emoji-reaction.json")
+      |> Jason.decode!()
+      |> Map.put("object", activity.data["object"])
+      |> Map.put("actor", other_user.ap_id)
+
+    {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+
+    assert data["actor"] == other_user.ap_id
+    assert data["type"] == "EmojiReact"
+    assert data["id"] == "https://misskey.local.live/likes/917ocsybgp"
+    assert data["object"] == activity.data["object"]
+    assert data["content"] == ":hanapog:"
+
+    assert data["tag"] == [
+             %{
+               "id" => "https://misskey.local.live/emojis/hanapog",
+               "type" => "Emoji",
+               "name" => "hanapog",
+               "updated" => "2022-06-07T12:00:05.773Z",
+               "icon" => %{
+                 "type" => "Image",
+                 "url" =>
+                   "https://misskey.local.live/files/webpublic-8f8a9768-7264-4171-88d6-2356aabeadcd"
+               }
+             }
+           ]
+
+    object = Object.get_by_ap_id(data["object"])
+
+    assert object.data["reaction_count"] == 1
+
+    assert match?(
+             [
+               [
+                 "hanapog",
+                 _,
+                 "https://misskey.local.live/files/webpublic-8f8a9768-7264-4171-88d6-2356aabeadcd"
+               ]
+             ],
+             object.data["reactions"]
+           )
   end
 
   test "it works for incoming unqualified emoji reactions" do
@@ -65,7 +114,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier.EmojiReactHandlingTest do
     object = Object.get_by_ap_id(data["object"])
 
     assert object.data["reaction_count"] == 1
-    assert match?([[^emoji, _]], object.data["reactions"])
+    assert match?([[^emoji, _, _]], object.data["reactions"])
   end
 
   test "it reject invalid emoji reactions" do

test/pleroma/web/mastodon_api/views/notification_view_test.exs

@@ -190,7 +190,47 @@ defmodule Pleroma.Web.MastodonAPI.NotificationViewTest do
       emoji: "☕",
       account: AccountView.render("show.json", %{user: other_user, for: user}),
       status: StatusView.render("show.json", %{activity: activity, for: user}),
-      created_at: Utils.to_masto_date(notification.inserted_at)
+      created_at: Utils.to_masto_date(notification.inserted_at),
+      emoji_url: nil
+    }
+
+    test_notifications_rendering([notification], user, [expected])
+  end
+
+  test "EmojiReact custom emoji notification" do
+    user = insert(:user)
+    other_user = insert(:user)
+
+    note =
+      insert(:note,
+        user: user,
+        data: %{
+          "reactions" => [
+            ["👍", [user.ap_id], nil],
+            ["dinosaur", [user.ap_id], "http://localhost:4001/emoji/dino walking.gif"]
+          ]
+        }
+      )
+
+    activity = insert(:note_activity, note: note, user: user)
+
+    {:ok, _activity} = CommonAPI.react_with_emoji(activity.id, other_user, "dinosaur")
+
+    activity = Repo.get(Activity, activity.id)
+
+    [notification] = Notification.for_user(user)
+
+    assert notification
+
+    expected = %{
+      id: to_string(notification.id),
+      pleroma: %{is_seen: false, is_muted: false},
+      type: "pleroma:emoji_reaction",
+      emoji: ":dinosaur:",
+      account: AccountView.render("show.json", %{user: other_user, for: user}),
+      status: StatusView.render("show.json", %{activity: activity, for: user}),
+      created_at: Utils.to_masto_date(notification.inserted_at),
+      emoji_url: "http://localhost:4001/emoji/dino walking.gif"
     }
 
     test_notifications_rendering([notification], user, [expected])

test/pleroma/web/mastodon_api/views/status_view_test.exs

@@ -35,16 +35,26 @@ defmodule Pleroma.Web.MastodonAPI.StatusViewTest do
     {:ok, activity} = CommonAPI.post(user, %{status: "dae cofe??"})
 
     {:ok, _} = CommonAPI.react_with_emoji(activity.id, user, "☕")
+    {:ok, _} = CommonAPI.react_with_emoji(activity.id, user, ":dinosaur:")
     {:ok, _} = CommonAPI.react_with_emoji(activity.id, third_user, "🍵")
     {:ok, _} = CommonAPI.react_with_emoji(activity.id, other_user, "☕")
+    {:ok, _} = CommonAPI.react_with_emoji(activity.id, other_user, ":dinosaur:")
+
     activity = Repo.get(Activity, activity.id)
     status = StatusView.render("show.json", activity: activity)
 
     assert_schema(status, "Status", Pleroma.Web.ApiSpec.spec())
 
     assert status[:pleroma][:emoji_reactions] == [
-             %{name: "☕", count: 2, me: false},
-             %{name: "🍵", count: 1, me: false}
+             %{name: "☕", count: 2, me: false, url: nil, account_ids: [other_user.id, user.id]},
+             %{
+               count: 2,
+               me: false,
+               name: "dinosaur",
+               url: "http://localhost:4001/emoji/dino walking.gif",
+               account_ids: [other_user.id, user.id]
+             },
+             %{name: "🍵", count: 1, me: false, url: nil, account_ids: [third_user.id]}
            ]
 
     status = StatusView.render("show.json", activity: activity, for: user)
@@ -52,8 +62,15 @@ defmodule Pleroma.Web.MastodonAPI.StatusViewTest do
     assert_schema(status, "Status", Pleroma.Web.ApiSpec.spec())
 
     assert status[:pleroma][:emoji_reactions] == [
-             %{name: "☕", count: 2, me: true},
-             %{name: "🍵", count: 1, me: false}
+             %{name: "☕", count: 2, me: true, url: nil, account_ids: [other_user.id, user.id]},
+             %{
+               count: 2,
+               me: true,
+               name: "dinosaur",
+               url: "http://localhost:4001/emoji/dino walking.gif",
+               account_ids: [other_user.id, user.id]
+             },
+             %{name: "🍵", count: 1, me: false, url: nil, account_ids: [third_user.id]}
            ]
   end
 
@@ -66,11 +83,10 @@ defmodule Pleroma.Web.MastodonAPI.StatusViewTest do
     |> Object.update_data(%{"reactions" => %{"☕" => [user.ap_id], "x" => 1}})
 
     activity = Activity.get_by_id(activity.id)
-
     status = StatusView.render("show.json", activity: activity, for: user)
 
     assert status[:pleroma][:emoji_reactions] == [
-             %{name: "☕", count: 1, me: true}
+             %{name: "☕", count: 1, me: true, url: nil, account_ids: [user.id]}
            ]
   end
 
@@ -90,7 +106,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusViewTest do
     status = StatusView.render("show.json", activity: activity)
 
     assert status[:pleroma][:emoji_reactions] == [
-             %{name: "☕", count: 1, me: false}
+             %{name: "☕", count: 1, me: false, url: nil, account_ids: [other_user.id]}
            ]
 
     status = StatusView.render("show.json", activity: activity, for: user)
@@ -102,19 +118,25 @@ defmodule Pleroma.Web.MastodonAPI.StatusViewTest do
     status = StatusView.render("show.json", activity: activity)
 
     assert status[:pleroma][:emoji_reactions] == [
-             %{name: "☕", count: 2, me: false}
+             %{
+               name: "☕",
+               count: 2,
+               me: false,
+               url: nil,
+               account_ids: [third_user.id, other_user.id]
+             }
            ]
 
     status = StatusView.render("show.json", activity: activity, for: user)
 
     assert status[:pleroma][:emoji_reactions] == [
-             %{name: "☕", count: 1, me: false}
+             %{name: "☕", count: 1, me: false, url: nil, account_ids: [third_user.id]}
            ]
 
     status = StatusView.render("show.json", activity: activity, for: other_user)
 
     assert status[:pleroma][:emoji_reactions] == [
-             %{name: "☕", count: 1, me: true}
+             %{name: "☕", count: 1, me: true, url: nil, account_ids: [other_user.id]}
            ]
   end
 

test/pleroma/web/metadata/providers/rel_me_test.exs

@@ -11,11 +11,24 @@ defmodule Pleroma.Web.Metadata.Providers.RelMeTest do
     bio =
       ~s(<a href="https://some-link.com">https://some-link.com</a> <a rel="me" href="https://another-link.com">https://another-link.com</a> <link href="http://some.com"> <link rel="me" href="http://some3.com">)
 
-    user = insert(:user, %{bio: bio})
+    fields = [
+      %{
+        "name" => "profile",
+        "value" => ~S(<a rel="me" href="http://profile.com">http://profile.com</a>)
+      },
+      %{
+        "name" => "like",
+        "value" => ~S(<a href="http://cofe.io">http://cofe.io</a>)
+      },
+      %{"name" => "foo", "value" => "bar"}
+    ]
+
+    user = insert(:user, %{bio: bio, fields: fields})
 
     assert RelMe.build_tags(%{user: user}) == [
              {:link, [rel: "me", href: "http://some3.com"], []},
-             {:link, [rel: "me", href: "https://another-link.com"], []}
+             {:link, [rel: "me", href: "https://another-link.com"], []},
+             {:link, [rel: "me", href: "http://profile.com"], []}
            ]
   end
 end

test/pleroma/web/pleroma_api/controllers/emoji_reaction_controller_test.exs

@@ -17,23 +17,113 @@ defmodule Pleroma.Web.PleromaAPI.EmojiReactionControllerTest do
     user = insert(:user)
     other_user = insert(:user)
 
-    {:ok, activity} = CommonAPI.post(user, %{status: "#cofe"})
+    note = insert(:note, user: user, data: %{"reactions" => [["👍", [other_user.ap_id], nil]]})
+    activity = insert(:note_activity, note: note, user: user)
 
     result =
       conn
       |> assign(:user, other_user)
       |> assign(:token, insert(:oauth_token, user: other_user, scopes: ["write:statuses"]))
-      |> put("/api/v1/pleroma/statuses/#{activity.id}/reactions/☕")
+      |> put("/api/v1/pleroma/statuses/#{activity.id}/reactions/\u26A0")
       |> json_response_and_validate_schema(200)
 
-    # We return the status, but this our implementation detail.
     assert %{"id" => id} = result
     assert to_string(activity.id) == id
 
     assert result["pleroma"]["emoji_reactions"] == [
-             %{"name" => "☕", "count" => 1, "me" => true}
+             %{
+               "name" => "👍",
+               "count" => 1,
+               "me" => true,
+               "url" => nil,
+               "account_ids" => [other_user.id]
+             },
+             %{
+               "name" => "\u26A0\uFE0F",
+               "count" => 1,
+               "me" => true,
+               "url" => nil,
+               "account_ids" => [other_user.id]
+             }
            ]
 
+    {:ok, activity} = CommonAPI.post(user, %{status: "#cofe"})
+
+    ObanHelpers.perform_all()
+
+    # Reacting with a custom emoji
+    result =
+      conn
+      |> assign(:user, other_user)
+      |> assign(:token, insert(:oauth_token, user: other_user, scopes: ["write:statuses"]))
+      |> put("/api/v1/pleroma/statuses/#{activity.id}/reactions/:dinosaur:")
+      |> json_response_and_validate_schema(200)
+
+    assert %{"id" => id} = result
+    assert to_string(activity.id) == id
+
+    assert result["pleroma"]["emoji_reactions"] == [
+             %{
+               "name" => "dinosaur",
+               "count" => 1,
+               "me" => true,
+               "url" => "http://localhost:4001/emoji/dino walking.gif",
+               "account_ids" => [other_user.id]
+             }
+           ]
+
+    # Reacting with a remote emoji
+    note =
+      insert(:note,
+        user: user,
+        data: %{
+          "reactions" => [
+            ["👍", [other_user.ap_id], nil],
+            ["wow", [other_user.ap_id], "https://remote/emoji/wow"]
+          ]
+        }
+      )
+
+    activity = insert(:note_activity, note: note, user: user)
+
+    result =
+      conn
+      |> assign(:user, user)
+      |> assign(:token, insert(:oauth_token, user: user, scopes: ["write:statuses"]))
+      |> put("/api/v1/pleroma/statuses/#{activity.id}/reactions/:wow@remote:")
+      |> json_response(200)
+
+    assert result["pleroma"]["emoji_reactions"] == [
+             %{
+               "account_ids" => [other_user.id],
+               "count" => 1,
+               "me" => false,
+               "name" => "👍",
+               "url" => nil
+             },
+             %{
+               "name" => "wow@remote",
+               "count" => 2,
+               "me" => true,
+               "url" => "https://remote/emoji/wow",
+               "account_ids" => [user.id, other_user.id]
+             }
+           ]
+
+    # Reacting with a remote custom emoji that hasn't been reacted with yet
+    note =
+      insert(:note,
+        user: user
+      )
+
+    activity = insert(:note_activity, note: note, user: user)
+
+    assert conn
+           |> assign(:user, user)
+           |> assign(:token, insert(:oauth_token, user: user, scopes: ["write:statuses"]))
+           |> put("/api/v1/pleroma/statuses/#{activity.id}/reactions/:wow@remote:")
+           |> json_response(400)
+
     # Reacting with a non-emoji
     assert conn
            |> assign(:user, other_user)
@@ -46,8 +136,21 @@ defmodule Pleroma.Web.PleromaAPI.EmojiReactionControllerTest do
     user = insert(:user)
     other_user = insert(:user)
 
-    {:ok, activity} = CommonAPI.post(user, %{status: "#cofe"})
+    note =
+      insert(:note,
+        user: user,
+        data: %{"reactions" => [["wow", [user.ap_id], "https://remote/emoji/wow"]]}
+      )
+
+    activity = insert(:note_activity, note: note, user: user)
+
+    ObanHelpers.perform_all()
+
     {:ok, _reaction_activity} = CommonAPI.react_with_emoji(activity.id, other_user, "☕")
+    {:ok, _reaction_activity} = CommonAPI.react_with_emoji(activity.id, other_user, ":dinosaur:")
+
+    {:ok, _reaction_activity} =
+      CommonAPI.react_with_emoji(activity.id, other_user, ":wow@remote:")
 
     ObanHelpers.perform_all()
 
@@ -60,11 +163,47 @@ defmodule Pleroma.Web.PleromaAPI.EmojiReactionControllerTest do
     assert %{"id" => id} = json_response_and_validate_schema(result, 200)
     assert to_string(activity.id) == id
 
+    # Remove custom emoji
+
+    result =
+      conn
+      |> assign(:user, other_user)
+      |> assign(:token, insert(:oauth_token, user: other_user, scopes: ["write:statuses"]))
+      |> delete("/api/v1/pleroma/statuses/#{activity.id}/reactions/:dinosaur:")
+
+    assert %{"id" => id} = json_response_and_validate_schema(result, 200)
+    assert to_string(activity.id) == id
+
     ObanHelpers.perform_all()
 
     object = Object.get_by_ap_id(activity.data["object"])
 
-    assert object.data["reaction_count"] == 0
+    assert object.data["reaction_count"] == 2
+
+    # Remove custom remote emoji
+    result =
+      conn
+      |> assign(:user, other_user)
+      |> assign(:token, insert(:oauth_token, user: other_user, scopes: ["write:statuses"]))
+      |> delete("/api/v1/pleroma/statuses/#{activity.id}/reactions/:wow@remote:")
+      |> json_response(200)
+
+    assert result["pleroma"]["emoji_reactions"] == [
+             %{
+               "name" => "wow@remote",
+               "count" => 1,
+               "me" => false,
+               "url" => "https://remote/emoji/wow",
+               "account_ids" => [user.id]
+             }
+           ]
+
+    # Remove custom remote emoji that hasn't been reacted with yet
+    assert conn
+           |> assign(:user, other_user)
+           |> assign(:token, insert(:oauth_token, user: other_user, scopes: ["write:statuses"]))
+           |> delete("/api/v1/pleroma/statuses/#{activity.id}/reactions/:zoop@remote:")
+           |> json_response(400)
   end
 
   test "GET /api/v1/pleroma/statuses/:id/reactions", %{conn: conn} do
@@ -181,7 +320,15 @@ defmodule Pleroma.Web.PleromaAPI.EmojiReactionControllerTest do
     {:ok, _} = CommonAPI.react_with_emoji(activity.id, other_user, "🎅")
     {:ok, _} = CommonAPI.react_with_emoji(activity.id, other_user, "☕")
 
-    assert [%{"name" => "🎅", "count" => 1, "accounts" => [represented_user], "me" => false}] =
+    assert [
+             %{
+               "name" => "🎅",
+               "count" => 1,
+               "accounts" => [represented_user],
+               "me" => false,
+               "url" => nil
+             }
+           ] =
              conn
              |> get("/api/v1/pleroma/statuses/#{activity.id}/reactions/🎅")
              |> json_response_and_validate_schema(200)