Merge branch 'develop' into csaurus/pleroma-feature/mstdn-direct-api

2024-11-10 19:29:11 +00:00 · 2018-05-26 16:00:59 +02:00 · 2018-05-26 16:00:59 +02:00 · 4b3ec53514
commit 4b3ec53514
parent 4fd9df100f 6138b29783
54 changed files with 1467 additions and 180 deletions
--- a/config/config.exs
+++ b/config/config.exs
@ -56,6 +56,8 @@ config :pleroma, :instance,
  rewrite_policy: Pleroma.Web.ActivityPub.MRF.NoOpPolicy,
  public: true

+config :pleroma, :activitypub, accept_blocks: true
+
 config :pleroma, :mrf_simple,
  media_removal: [],
  media_nsfw: [],
--- a/config/test.exs
+++ b/config/test.exs
@ -21,7 +21,7 @@ config :pleroma, Pleroma.Repo,
  pool: Ecto.Adapters.SQL.Sandbox

 # Reduce hash rounds for testing
-config :comeonin, :pbkdf2_rounds, 1
+config :pbkdf2_elixir, rounds: 1

 config :pleroma, :websub, Pleroma.Web.WebsubMock
 config :pleroma, :ostatus, Pleroma.Web.OStatusMock
--- a/installation/pleroma.nginx
+++ b/installation/pleroma.nginx
@ -52,8 +52,9 @@ server {
        # if you do not want remote frontends to be able to access your Pleroma backend
        # server, remove these lines.
        add_header 'Access-Control-Allow-Origin' '*' always;
-        add_header 'Access-Control-Allow-Methods' 'POST, GET, OPTIONS' always;
-        add_header 'Access-Control-Allow-Headers' 'Authorization, Content-Type' always;
+        add_header 'Access-Control-Allow-Methods' 'POST, PUT, DELETE, GET, PATCH, OPTIONS' always;
+        add_header 'Access-Control-Allow-Headers' 'Authorization, Content-Type, Idempotency-Key' always;
+        add_header 'Access-Control-Expose-Headers' 'Link, X-RateLimit-Reset, X-RateLimit-Limit, X-RateLimit-Remaining, X-Request-Id' always;
        if ($request_method = OPTIONS) {
            return 204;
        }
--- a/lib/pleroma/application.ex
+++ b/lib/pleroma/application.ex
@ -5,6 +5,7 @@ defmodule Pleroma.Application do
  # for more information on OTP Applications
  def start(_type, _args) do
    import Supervisor.Spec
+    import Cachex.Spec

    # Define workers and child supervisors to be supervised
    children =
@ -28,8 +29,11 @@ defmodule Pleroma.Application do
          [
            :idempotency_cache,
            [
-              default_ttl: :timer.seconds(6 * 60 * 60),
-              ttl_interval: :timer.seconds(60),
+              expiration:
+                expiration(
+                  default: :timer.seconds(6 * 60 * 60),
+                  interval: :timer.seconds(60)
+                ),
              limit: 2500
            ]
          ],
--- a/lib/pleroma/list.ex
+++ b/lib/pleroma/list.ex
@ -0,0 +1,87 @@
+defmodule Pleroma.List do
+  use Ecto.Schema
+  import Ecto.{Changeset, Query}
+  alias Pleroma.{User, Repo}
+
+  schema "lists" do
+    belongs_to(:user, Pleroma.User)
+    field(:title, :string)
+    field(:following, {:array, :string}, default: [])
+
+    timestamps()
+  end
+
+  def title_changeset(list, attrs \\ %{}) do
+    list
+    |> cast(attrs, [:title])
+    |> validate_required([:title])
+  end
+
+  def follow_changeset(list, attrs \\ %{}) do
+    list
+    |> cast(attrs, [:following])
+    |> validate_required([:following])
+  end
+
+  def for_user(user, opts) do
+    query =
+      from(
+        l in Pleroma.List,
+        where: l.user_id == ^user.id,
+        order_by: [desc: l.id],
+        limit: 50
+      )
+
+    Repo.all(query)
+  end
+
+  def get(id, %{id: user_id} = _user) do
+    query =
+      from(
+        l in Pleroma.List,
+        where: l.id == ^id,
+        where: l.user_id == ^user_id
+      )
+
+    Repo.one(query)
+  end
+
+  def get_following(%Pleroma.List{following: following} = list) do
+    q =
+      from(
+        u in User,
+        where: u.follower_address in ^following
+      )
+
+    {:ok, Repo.all(q)}
+  end
+
+  def rename(%Pleroma.List{} = list, title) do
+    list
+    |> title_changeset(%{title: title})
+    |> Repo.update()
+  end
+
+  def create(title, %User{} = creator) do
+    list = %Pleroma.List{user_id: creator.id, title: title}
+    Repo.insert(list)
+  end
+
+  def follow(%Pleroma.List{following: following} = list, %User{} = followed) do
+    update_follows(list, %{following: Enum.uniq([followed.follower_address | following])})
+  end
+
+  def unfollow(%Pleroma.List{following: following} = list, %User{} = unfollowed) do
+    update_follows(list, %{following: List.delete(following, unfollowed.follower_address)})
+  end
+
+  def delete(%Pleroma.List{} = list) do
+    Repo.delete(list)
+  end
+
+  def update_follows(%Pleroma.List{} = list, attrs) do
+    list
+    |> follow_changeset(attrs)
+    |> Repo.update()
+  end
+end
--- a/lib/pleroma/object.ex
+++ b/lib/pleroma/object.ex
@ -33,19 +33,15 @@ defmodule Pleroma.Object do
    else
      key = "object:#{ap_id}"

-      Cachex.get!(
-        :user_cache,
-        key,
-        fallback: fn _ ->
-          object = get_by_ap_id(ap_id)
+      Cachex.fetch!(:user_cache, key, fn _ ->
+        object = get_by_ap_id(ap_id)

-          if object do
-            {:commit, object}
-          else
-            {:ignore, object}
-          end
+        if object do
+          {:commit, object}
+        else
+          {:ignore, object}
        end
-      )
+      end)
    end
  end

--- a/lib/pleroma/plugs/http_signature.ex
+++ b/lib/pleroma/plugs/http_signature.ex
@ -13,7 +13,7 @@ defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do
  end

  def call(conn, _opts) do
-    user = Utils.normalize_actor(conn.params["actor"])
+    user = Utils.get_ap_id(conn.params["actor"])
    Logger.debug("Checking sig for #{user}")
    [signature | _] = get_req_header(conn, "signature")

--- a/lib/pleroma/user.ex
+++ b/lib/pleroma/user.ex
@ -67,7 +67,8 @@ defmodule Pleroma.User do
    %{
      following_count: length(user.following) - oneself,
      note_count: user.info["note_count"] || 0,
-      follower_count: user.info["follower_count"] || 0
+      follower_count: user.info["follower_count"] || 0,
+      locked: user.info["locked"] || false
    }
  end

@ -167,28 +168,62 @@ defmodule Pleroma.User do
    end
  end

+  def maybe_direct_follow(%User{} = follower, %User{info: info} = followed) do
+    user_info = user_info(followed)
+
+    should_direct_follow =
+      cond do
+        # if the account is locked, don't pre-create the relationship
+        user_info["locked"] == true ->
+          false
+
+        # if the users are blocking each other, we shouldn't even be here, but check for it anyway
+        User.blocks?(follower, followed) == true or User.blocks?(followed, follower) == true ->
+          false
+
+        # if OStatus, then there is no three-way handshake to follow
+        User.ap_enabled?(followed) != true ->
+          true
+
+        # if there are no other reasons not to, just pre-create the relationship
+        true ->
+          true
+      end
+
+    if should_direct_follow do
+      follow(follower, followed)
+    else
+      follower
+    end
+  end
+
  def follow(%User{} = follower, %User{info: info} = followed) do
    ap_followers = followed.follower_address

-    if following?(follower, followed) or info["deactivated"] do
-      {:error, "Could not follow user: #{followed.nickname} is already on your list."}
-    else
-      if !followed.local && follower.local && !ap_enabled?(followed) do
-        Websub.subscribe(follower, followed)
-      end
+    cond do
+      following?(follower, followed) or info["deactivated"] ->
+        {:error, "Could not follow user: #{followed.nickname} is already on your list."}

-      following =
-        [ap_followers | follower.following]
-        |> Enum.uniq()
+      blocks?(followed, follower) ->
+        {:error, "Could not follow user: #{followed.nickname} blocked you."}
+
+      true ->
+        if !followed.local && follower.local && !ap_enabled?(followed) do
+          Websub.subscribe(follower, followed)
+        end
+
+        following =
+          [ap_followers | follower.following]
+          |> Enum.uniq()
+
+        follower =
+          follower
+          |> follow_changeset(%{following: following})
+          |> update_and_set_cache
+
+        {:ok, _} = update_follower_count(followed)

-      follower =
        follower
-        |> follow_changeset(%{following: following})
-        |> update_and_set_cache
-
-      {:ok, _} = update_follower_count(followed)
-
-      follower
    end
  end

@ -223,9 +258,9 @@ defmodule Pleroma.User do

  def update_and_set_cache(changeset) do
    with {:ok, user} <- Repo.update(changeset) do
-      Cachex.set(:user_cache, "ap_id:#{user.ap_id}", user)
-      Cachex.set(:user_cache, "nickname:#{user.nickname}", user)
-      Cachex.set(:user_cache, "user_info:#{user.id}", user_info(user))
+      Cachex.put(:user_cache, "ap_id:#{user.ap_id}", user)
+      Cachex.put(:user_cache, "nickname:#{user.nickname}", user)
+      Cachex.put(:user_cache, "user_info:#{user.id}", user_info(user))
      {:ok, user}
    else
      e -> e
@ -239,12 +274,12 @@ defmodule Pleroma.User do

  def get_cached_by_ap_id(ap_id) do
    key = "ap_id:#{ap_id}"
-    Cachex.get!(:user_cache, key, fallback: fn _ -> get_by_ap_id(ap_id) end)
+    Cachex.fetch!(:user_cache, key, fn _ -> get_by_ap_id(ap_id) end)
  end

  def get_cached_by_nickname(nickname) do
    key = "nickname:#{nickname}"
-    Cachex.get!(:user_cache, key, fallback: fn _ -> get_or_fetch_by_nickname(nickname) end)
+    Cachex.fetch!(:user_cache, key, fn _ -> get_or_fetch_by_nickname(nickname) end)
  end

  def get_by_nickname(nickname) do
@ -260,7 +295,7 @@ defmodule Pleroma.User do

  def get_cached_user_info(user) do
    key = "user_info:#{user.id}"
-    Cachex.get!(:user_cache, key, fallback: fn _ -> user_info(user) end)
+    Cachex.fetch!(:user_cache, key, fn _ -> user_info(user) end)
  end

  def fetch_by_nickname(nickname) do
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@ -104,6 +104,17 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
    end
  end

+  def reject(%{to: to, actor: actor, object: object} = params) do
+    # only accept false as false value
+    local = !(params[:local] == false)
+
+    with data <- %{"to" => to, "type" => "Reject", "actor" => actor, "object" => object},
+         {:ok, activity} <- insert(data, local),
+         :ok <- maybe_federate(activity) do
+      {:ok, activity}
+    end
+  end
+
  def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
    # only accept false as false value
    local = !(params[:local] == false)
@ -201,12 +212,11 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
    end
  end

-  def unfollow(follower, followed, local \\ true) do
+  def unfollow(follower, followed, activity_id \\ nil, local \\ true) do
    with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
-         unfollow_data <- make_unfollow_data(follower, followed, follow_activity),
+         unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
         {:ok, activity} <- insert(unfollow_data, local),
-         :ok,
-         maybe_federate(activity) do
+         :ok <- maybe_federate(activity) do
      {:ok, activity}
    end
  end
@ -230,6 +240,29 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
    end
  end

+  def block(blocker, blocked, activity_id \\ nil, local \\ true) do
+    follow_activity = fetch_latest_follow(blocker, blocked)
+
+    if follow_activity do
+      unfollow(blocker, blocked, nil, local)
+    end
+
+    with block_data <- make_block_data(blocker, blocked, activity_id),
+         {:ok, activity} <- insert(block_data, local),
+         :ok <- maybe_federate(activity) do
+      {:ok, activity}
+    end
+  end
+
+  def unblock(blocker, blocked, activity_id \\ nil, local \\ true) do
+    with %Activity{} = block_activity <- fetch_latest_block(blocker, blocked),
+         unblock_data <- make_unblock_data(blocker, blocked, block_activity, activity_id),
+         {:ok, activity} <- insert(unblock_data, local),
+         :ok <- maybe_federate(activity) do
+      {:ok, activity}
+    end
+  end
+
  def fetch_activities_for_context(context, opts \\ %{}) do
    public = ["https://www.w3.org/ns/activitystreams#Public"]

@ -476,6 +509,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          "url" => [%{"href" => data["image"]["url"]}]
        }

+    locked = data["manuallyApprovesFollowers"] || false
    data = Transmogrifier.maybe_fix_user_object(data)

    user_data = %{
@ -483,7 +517,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
      info: %{
        "ap_enabled" => true,
        "source_data" => data,
-        "banner" => banner
+        "banner" => banner,
+        "locked" => locked
      },
      avatar: avatar,
      nickname: "#{data["preferredUsername"]}@#{URI.parse(data["id"]).host}",
--- a/lib/pleroma/web/activity_pub/transmogrifier.ex
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@ -7,6 +7,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
  alias Pleroma.Activity
  alias Pleroma.Repo
  alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.Web.ActivityPub.Utils

  import Ecto.Query

@ -145,6 +146,78 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
    end
  end

+  defp mastodon_follow_hack(%{"id" => id, "actor" => follower_id}, followed) do
+    with true <- id =~ "follows",
+         %User{local: true} = follower <- User.get_cached_by_ap_id(follower_id),
+         %Activity{} = activity <- Utils.fetch_latest_follow(follower, followed) do
+      {:ok, activity}
+    else
+      _ -> {:error, nil}
+    end
+  end
+
+  defp mastodon_follow_hack(_), do: {:error, nil}
+
+  defp get_follow_activity(follow_object, followed) do
+    with object_id when not is_nil(object_id) <- Utils.get_ap_id(follow_object),
+         {_, %Activity{} = activity} <- {:activity, Activity.get_by_ap_id(object_id)} do
+      {:ok, activity}
+    else
+      # Can't find the activity. This might a Mastodon 2.3 "Accept"
+      {:activity, nil} ->
+        mastodon_follow_hack(follow_object, followed)
+
+      _ ->
+        {:error, nil}
+    end
+  end
+
+  def handle_incoming(
+        %{"type" => "Accept", "object" => follow_object, "actor" => actor, "id" => id} = data
+      ) do
+    with %User{} = followed <- User.get_or_fetch_by_ap_id(actor),
+         {:ok, follow_activity} <- get_follow_activity(follow_object, followed),
+         %User{local: true} = follower <- User.get_cached_by_ap_id(follow_activity.data["actor"]),
+         {:ok, activity} <-
+           ActivityPub.accept(%{
+             to: follow_activity.data["to"],
+             type: "Accept",
+             actor: followed.ap_id,
+             object: follow_activity.data["id"],
+             local: false
+           }) do
+      if not User.following?(follower, followed) do
+        {:ok, follower} = User.follow(follower, followed)
+      end
+
+      {:ok, activity}
+    else
+      _e -> :error
+    end
+  end
+
+  def handle_incoming(
+        %{"type" => "Reject", "object" => follow_object, "actor" => actor, "id" => id} = data
+      ) do
+    with %User{} = followed <- User.get_or_fetch_by_ap_id(actor),
+         {:ok, follow_activity} <- get_follow_activity(follow_object, followed),
+         %User{local: true} = follower <- User.get_cached_by_ap_id(follow_activity.data["actor"]),
+         {:ok, activity} <-
+           ActivityPub.accept(%{
+             to: follow_activity.data["to"],
+             type: "Accept",
+             actor: followed.ap_id,
+             object: follow_activity.data["id"],
+             local: false
+           }) do
+      User.unfollow(follower, followed)
+
+      {:ok, activity}
+    else
+      _e -> :error
+    end
+  end
+
  def handle_incoming(
        %{"type" => "Like", "object" => object_id, "actor" => actor, "id" => id} = _data
      ) do
@ -207,11 +280,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
  def handle_incoming(
        %{"type" => "Delete", "object" => object_id, "actor" => actor, "id" => _id} = _data
      ) do
-    object_id =
-      case object_id do
-        %{"id" => id} -> id
-        id -> id
-      end
+    object_id = Utils.get_ap_id(object_id)

    with %User{} = _actor <- User.get_or_fetch_by_ap_id(actor),
         {:ok, object} <-
@ -229,13 +298,68 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
          "object" => %{"type" => "Announce", "object" => object_id},
          "actor" => actor,
          "id" => id
-        } = data
+        } = _data
      ) do
    with %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
         {:ok, object} <-
           get_obj_helper(object_id) || ActivityPub.fetch_object_from_id(object_id),
         {:ok, activity, _, _} <- ActivityPub.unannounce(actor, object, id, false) do
      {:ok, activity}
+    else
+      _e -> :error
+    end
+  end
+
+  def handle_incoming(
+        %{
+          "type" => "Undo",
+          "object" => %{"type" => "Follow", "object" => followed},
+          "actor" => follower,
+          "id" => id
+        } = _data
+      ) do
+    with %User{local: true} = followed <- User.get_cached_by_ap_id(followed),
+         %User{} = follower <- User.get_or_fetch_by_ap_id(follower),
+         {:ok, activity} <- ActivityPub.unfollow(follower, followed, id, false) do
+      User.unfollow(follower, followed)
+      {:ok, activity}
+    else
+      e -> :error
+    end
+  end
+
+  @ap_config Application.get_env(:pleroma, :activitypub)
+  @accept_blocks Keyword.get(@ap_config, :accept_blocks)
+
+  def handle_incoming(
+        %{
+          "type" => "Undo",
+          "object" => %{"type" => "Block", "object" => blocked},
+          "actor" => blocker,
+          "id" => id
+        } = _data
+      ) do
+    with true <- @accept_blocks,
+         %User{local: true} = blocked <- User.get_cached_by_ap_id(blocked),
+         %User{} = blocker <- User.get_or_fetch_by_ap_id(blocker),
+         {:ok, activity} <- ActivityPub.unblock(blocker, blocked, id, false) do
+      User.unblock(blocker, blocked)
+      {:ok, activity}
+    else
+      e -> :error
+    end
+  end
+
+  def handle_incoming(
+        %{"type" => "Block", "object" => blocked, "actor" => blocker, "id" => id} = data
+      ) do
+    with true <- @accept_blocks,
+         %User{local: true} = blocked = User.get_cached_by_ap_id(blocked),
+         %User{} = blocker = User.get_or_fetch_by_ap_id(blocker),
+         {:ok, activity} <- ActivityPub.block(blocker, blocked, id, false) do
+      User.unfollow(blocker, blocked)
+      User.block(blocker, blocked)
+      {:ok, activity}
    else
      e -> :error
    end
@ -247,7 +371,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
          "object" => %{"type" => "Like", "object" => object_id},
          "actor" => actor,
          "id" => id
-        } = data
+        } = _data
      ) do
    with %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
         {:ok, object} <-
@ -255,14 +379,10 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
         {:ok, activity, _, _} <- ActivityPub.unlike(actor, object, id, false) do
      {:ok, activity}
    else
-      e -> :error
+      _e -> :error
    end
  end

-  # TODO
-  # Accept
-  # Undo for non-Announce
-
  def handle_incoming(_), do: :error

  def get_obj_helper(id) do
@ -516,10 +636,10 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do

  def maybe_fix_user_url(data) do
    if is_map(data["url"]) do
-      data = Map.put(data, "url", data["url"]["href"])
+      Map.put(data, "url", data["url"]["href"])
+    else
+      data
    end
-
-    data
  end

  def maybe_fix_user_object(data) do
--- a/lib/pleroma/web/activity_pub/utils.ex
+++ b/lib/pleroma/web/activity_pub/utils.ex
@ -7,18 +7,15 @@ defmodule Pleroma.Web.ActivityPub.Utils do

  # Some implementations send the actor URI as the actor field, others send the entire actor object,
  # so figure out what the actor's URI is based on what we have.
-  def normalize_actor(actor) do
-    cond do
-      is_binary(actor) ->
-        actor
-
-      is_map(actor) ->
-        actor["id"]
+  def get_ap_id(object) do
+    case object do
+      %{"id" => id} -> id
+      id -> id
    end
  end

  def normalize_params(params) do
-    Map.put(params, "actor", normalize_actor(params["actor"]))
+    Map.put(params, "actor", get_ap_id(params["actor"]))
  end

  def make_json_ld_header do
@ -238,11 +235,17 @@ defmodule Pleroma.Web.ActivityPub.Utils do
    query =
      from(
        activity in Activity,
+        where:
+          fragment(
+            "? ->> 'type' = 'Follow'",
+            activity.data
+          ),
+        where: activity.actor == ^follower_id,
        where:
          fragment(
            "? @> ?",
            activity.data,
-            ^%{type: "Follow", actor: follower_id, object: followed_id}
+            ^%{object: followed_id}
          ),
        order_by: [desc: :id],
        limit: 1
@ -260,7 +263,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
    query =
      from(
        activity in Activity,
-        where: fragment("(?)->>'actor' = ?", activity.data, ^actor),
+        where: activity.actor == ^actor,
        # this is to use the index
        where:
          fragment(
@ -346,13 +349,61 @@ defmodule Pleroma.Web.ActivityPub.Utils do

  #### Unfollow-related helpers

-  def make_unfollow_data(follower, followed, follow_activity) do
-    %{
+  def make_unfollow_data(follower, followed, follow_activity, activity_id) do
+    data = %{
      "type" => "Undo",
      "actor" => follower.ap_id,
      "to" => [followed.ap_id],
-      "object" => follow_activity.data["id"]
+      "object" => follow_activity.data
    }
+
+    if activity_id, do: Map.put(data, "id", activity_id), else: data
+  end
+
+  #### Block-related helpers
+  def fetch_latest_block(%User{ap_id: blocker_id}, %User{ap_id: blocked_id}) do
+    query =
+      from(
+        activity in Activity,
+        where:
+          fragment(
+            "? ->> 'type' = 'Block'",
+            activity.data
+          ),
+        where: activity.actor == ^blocker_id,
+        where:
+          fragment(
+            "? @> ?",
+            activity.data,
+            ^%{object: blocked_id}
+          ),
+        order_by: [desc: :id],
+        limit: 1
+      )
+
+    Repo.one(query)
+  end
+
+  def make_block_data(blocker, blocked, activity_id) do
+    data = %{
+      "type" => "Block",
+      "actor" => blocker.ap_id,
+      "to" => [blocked.ap_id],
+      "object" => blocked.ap_id
+    }
+
+    if activity_id, do: Map.put(data, "id", activity_id), else: data
+  end
+
+  def make_unblock_data(blocker, blocked, block_activity, activity_id) do
+    data = %{
+      "type" => "Undo",
+      "actor" => blocker.ap_id,
+      "to" => [blocked.ap_id],
+      "object" => block_activity.data
+    }
+
+    if activity_id, do: Map.put(data, "id", activity_id), else: data
  end

  #### Create-related helpers
--- a/lib/pleroma/web/activity_pub/views/user_view.ex
+++ b/lib/pleroma/web/activity_pub/views/user_view.ex
@ -26,7 +26,7 @@ defmodule Pleroma.Web.ActivityPub.UserView do
      "name" => user.name,
      "summary" => user.bio,
      "url" => user.ap_id,
-      "manuallyApprovesFollowers" => false,
+      "manuallyApprovesFollowers" => user.info["locked"] || false,
      "publicKey" => %{
        "id" => "#{user.ap_id}#main-key",
        "owner" => user.ap_id,
--- a/lib/pleroma/web/common_api/utils.ex
+++ b/lib/pleroma/web/common_api/utils.ex
@ -133,7 +133,7 @@ defmodule Pleroma.Web.CommonAPI.Utils do
      "context" => context,
      "attachment" => attachments,
      "actor" => actor,
-      "tag" => tags |> Enum.map(fn {_, tag} -> tag end)
+      "tag" => tags |> Enum.map(fn {_, tag} -> tag end) |> Enum.uniq()
    }

    if inReplyTo do
@ -187,9 +187,9 @@ defmodule Pleroma.Web.CommonAPI.Utils do
    end
  end

-  def confirm_current_password(user, params) do
+  def confirm_current_password(user, password) do
    with %User{local: true} = db_user <- Repo.get(User, user.id),
-         true <- Pbkdf2.checkpw(params["password"], db_user.password_hash) do
+         true <- Pbkdf2.checkpw(password, db_user.password_hash) do
      {:ok, db_user}
    else
      _ -> {:error, "Invalid password."}
--- a/lib/pleroma/web/http_signatures/http_signatures.ex
+++ b/lib/pleroma/web/http_signatures/http_signatures.ex
@ -32,14 +32,14 @@ defmodule Pleroma.Web.HTTPSignatures do
  def validate_conn(conn) do
    # TODO: How to get the right key and see if it is actually valid for that request.
    # For now, fetch the key for the actor.
-    with actor_id <- Utils.normalize_actor(conn.params["actor"]),
+    with actor_id <- Utils.get_ap_id(conn.params["actor"]),
         {:ok, public_key} <- User.get_public_key_for_ap_id(actor_id) do
      if validate_conn(conn, public_key) do
        true
      else
        Logger.debug("Could not validate, re-fetching user and trying one more time")
        # Fetch user anew and try one more time
-        with actor_id <- Utils.normalize_actor(conn.params["actor"]),
+        with actor_id <- Utils.get_ap_id(conn.params["actor"]),
             {:ok, _user} <- ActivityPub.make_user_from_ap_id(actor_id),
             {:ok, public_key} <- User.get_public_key_for_ap_id(actor_id) do
          validate_conn(conn, public_key)
--- a/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
+++ b/lib/pleroma/web/mastodon_api/mastodon_api_controller.ex
@ -2,7 +2,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
  use Pleroma.Web, :controller
  alias Pleroma.{Repo, Activity, User, Notification, Stats}
  alias Pleroma.Web
-  alias Pleroma.Web.MastodonAPI.{StatusView, AccountView, MastodonView}
+  alias Pleroma.Web.MastodonAPI.{StatusView, AccountView, MastodonView, ListView}
  alias Pleroma.Web.ActivityPub.ActivityPub
  alias Pleroma.Web.{CommonAPI, OStatus}
  alias Pleroma.Web.OAuth.{Authorization, Token, App}
@ -284,11 +284,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
      end

    {:ok, activity} =
-      Cachex.get!(
-        :idempotency_cache,
-        idempotency_key,
-        fallback: fn _ -> CommonAPI.post(user, params) end
-      )
+      Cachex.fetch!(:idempotency_cache, idempotency_key, fn _ -> CommonAPI.post(user, params) end)

    render(conn, StatusView, "status.json", %{activity: activity, for: user, as: :activity})
  end
@ -442,7 +438,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do

  def follow(%{assigns: %{user: follower}} = conn, %{"id" => id}) do
    with %User{} = followed <- Repo.get(User, id),
-         {:ok, follower} <- User.follow(follower, followed),
+         {:ok, follower} <- User.maybe_direct_follow(follower, followed),
         {:ok, _activity} <- ActivityPub.follow(follower, followed) do
      render(conn, AccountView, "relationship.json", %{user: follower, target: followed})
    else
@ -455,7 +451,7 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do

  def follow(%{assigns: %{user: follower}} = conn, %{"uri" => uri}) do
    with %User{} = followed <- Repo.get_by(User, nickname: uri),
-         {:ok, follower} <- User.follow(follower, followed),
+         {:ok, follower} <- User.maybe_direct_follow(follower, followed),
         {:ok, _activity} <- ActivityPub.follow(follower, followed) do
      render(conn, AccountView, "account.json", %{user: followed})
    else
@ -466,24 +462,18 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
    end
  end

-  # TODO: Clean up and unify
  def unfollow(%{assigns: %{user: follower}} = conn, %{"id" => id}) do
    with %User{} = followed <- Repo.get(User, id),
-         {:ok, follower, follow_activity} <- User.unfollow(follower, followed),
-         {:ok, _activity} <-
-           ActivityPub.insert(%{
-             "type" => "Undo",
-             "actor" => follower.ap_id,
-             # get latest Follow for these users
-             "object" => follow_activity.data["id"]
-           }) do
+         {:ok, _activity} <- ActivityPub.unfollow(follower, followed),
+         {:ok, follower, _} <- User.unfollow(follower, followed) do
      render(conn, AccountView, "relationship.json", %{user: follower, target: followed})
    end
  end

  def block(%{assigns: %{user: blocker}} = conn, %{"id" => id}) do
    with %User{} = blocked <- Repo.get(User, id),
-         {:ok, blocker} <- User.block(blocker, blocked) do
+         {:ok, blocker} <- User.block(blocker, blocked),
+         {:ok, _activity} <- ActivityPub.block(blocker, blocked) do
      render(conn, AccountView, "relationship.json", %{user: blocker, target: blocked})
    else
      {:error, message} ->
@ -495,7 +485,8 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do

  def unblock(%{assigns: %{user: blocker}} = conn, %{"id" => id}) do
    with %User{} = blocked <- Repo.get(User, id),
-         {:ok, blocker} <- User.unblock(blocker, blocked) do
+         {:ok, blocker} <- User.unblock(blocker, blocked),
+         {:ok, _activity} <- ActivityPub.unblock(blocker, blocked) do
      render(conn, AccountView, "relationship.json", %{user: blocker, target: blocked})
    else
      {:error, message} ->
@ -586,6 +577,102 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIController do
    |> render(StatusView, "index.json", %{activities: activities, for: user, as: :activity})
  end

+  def get_lists(%{assigns: %{user: user}} = conn, opts) do
+    lists = Pleroma.List.for_user(user, opts)
+    res = ListView.render("lists.json", lists: lists)
+    json(conn, res)
+  end
+
+  def get_list(%{assigns: %{user: user}} = conn, %{"id" => id}) do
+    with %Pleroma.List{} = list <- Pleroma.List.get(id, user) do
+      res = ListView.render("list.json", list: list)
+      json(conn, res)
+    else
+      _e -> json(conn, "error")
+    end
+  end
+
+  def delete_list(%{assigns: %{user: user}} = conn, %{"id" => id}) do
+    with %Pleroma.List{} = list <- Pleroma.List.get(id, user),
+         {:ok, _list} <- Pleroma.List.delete(list) do
+      json(conn, %{})
+    else
+      _e ->
+        json(conn, "error")
+    end
+  end
+
+  def create_list(%{assigns: %{user: user}} = conn, %{"title" => title}) do
+    with {:ok, %Pleroma.List{} = list} <- Pleroma.List.create(title, user) do
+      res = ListView.render("list.json", list: list)
+      json(conn, res)
+    end
+  end
+
+  def add_to_list(%{assigns: %{user: user}} = conn, %{"id" => id, "account_ids" => accounts}) do
+    accounts
+    |> Enum.each(fn account_id ->
+      with %Pleroma.List{} = list <- Pleroma.List.get(id, user),
+           %User{} = followed <- Repo.get(User, account_id) do
+        Pleroma.List.follow(list, followed)
+      end
+    end)
+
+    json(conn, %{})
+  end
+
+  def remove_from_list(%{assigns: %{user: user}} = conn, %{"id" => id, "account_ids" => accounts}) do
+    accounts
+    |> Enum.each(fn account_id ->
+      with %Pleroma.List{} = list <- Pleroma.List.get(id, user),
+           %User{} = followed <- Repo.get(Pleroma.User, account_id) do
+        Pleroma.List.unfollow(list, followed)
+      end
+    end)
+
+    json(conn, %{})
+  end
+
+  def list_accounts(%{assigns: %{user: user}} = conn, %{"id" => id}) do
+    with %Pleroma.List{} = list <- Pleroma.List.get(id, user),
+         {:ok, users} = Pleroma.List.get_following(list) do
+      render(conn, AccountView, "accounts.json", %{users: users, as: :user})
+    end
+  end
+
+  def rename_list(%{assigns: %{user: user}} = conn, %{"id" => id, "title" => title}) do
+    with %Pleroma.List{} = list <- Pleroma.List.get(id, user),
+         {:ok, list} <- Pleroma.List.rename(list, title) do
+      res = ListView.render("list.json", list: list)
+      json(conn, res)
+    else
+      _e ->
+        json(conn, "error")
+    end
+  end
+
+  def list_timeline(%{assigns: %{user: user}} = conn, %{"list_id" => id} = params) do
+    with %Pleroma.List{title: title, following: following} <- Pleroma.List.get(id, user) do
+      params =
+        params
+        |> Map.put("type", "Create")
+        |> Map.put("blocking_user", user)
+
+      # adding title is a hack to not make empty lists function like a public timeline
+      activities =
+        ActivityPub.fetch_activities([title | following], params)
+        |> Enum.reverse()
+
+      conn
+      |> render(StatusView, "index.json", %{activities: activities, for: user, as: :activity})
+    else
+      _e ->
+        conn
+        |> put_status(403)
+        |> json(%{error: "Error."})
+    end
+  end
+
  def index(%{assigns: %{user: user}} = conn, _params) do
    token =
      conn
--- a/lib/pleroma/web/mastodon_api/views/account_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/account_view.ex
@ -19,7 +19,7 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
      username: hd(String.split(user.nickname, "@")),
      acct: user.nickname,
      display_name: user.name || user.nickname,
-      locked: false,
+      locked: user_info.locked,
      created_at: Utils.to_masto_date(user.inserted_at),
      followers_count: user_info.follower_count,
      following_count: user_info.following_count,
--- a/lib/pleroma/web/mastodon_api/views/list_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/list_view.ex
@ -0,0 +1,15 @@
+defmodule Pleroma.Web.MastodonAPI.ListView do
+  use Pleroma.Web, :view
+  alias Pleroma.Web.MastodonAPI.ListView
+
+  def render("lists.json", %{lists: lists} = opts) do
+    render_many(lists, ListView, "list.json", opts)
+  end
+
+  def render("list.json", %{list: list}) do
+    %{
+      id: to_string(list.id),
+      title: list.title
+    }
+  end
+end
--- a/lib/pleroma/web/ostatus/activity_representer.ex
+++ b/lib/pleroma/web/ostatus/activity_representer.ex
@ -232,7 +232,12 @@ defmodule Pleroma.Web.OStatus.ActivityRepresenter do
  end

  # Only undos of follow for now. Will need to get redone once there are more
-  def to_simple_form(%{data: %{"type" => "Undo"}} = activity, user, with_author) do
+  def to_simple_form(
+        %{data: %{"type" => "Undo", "object" => %{"type" => "Follow"} = follow_activity}} =
+          activity,
+        user,
+        with_author
+      ) do
    h = fn str -> [to_charlist(str)] end

    updated_at = activity.data["published"]
@ -240,34 +245,26 @@ defmodule Pleroma.Web.OStatus.ActivityRepresenter do

    author = if with_author, do: [{:author, UserRepresenter.to_simple_form(user)}], else: []

-    follow_activity =
-      if is_map(activity.data["object"]) do
-        Activity.get_by_ap_id(activity.data["object"]["id"])
-      else
-        Activity.get_by_ap_id(activity.data["object"])
-      end
-
    mentions = (activity.recipients || []) |> get_mentions
+    follow_activity = Activity.get_by_ap_id(follow_activity["id"])

-    if follow_activity do
-      [
-        {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/activity']},
-        {:"activity:verb", ['http://activitystrea.ms/schema/1.0/unfollow']},
-        {:id, h.(activity.data["id"])},
-        {:title, ['#{user.nickname} stopped following #{follow_activity.data["object"]}']},
-        {:content, [type: 'html'],
-         ['#{user.nickname} stopped following #{follow_activity.data["object"]}']},
-        {:published, h.(inserted_at)},
-        {:updated, h.(updated_at)},
-        {:"activity:object",
-         [
-           {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/person']},
-           {:id, h.(follow_activity.data["object"])},
-           {:uri, h.(follow_activity.data["object"])}
-         ]},
-        {:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])], []}
-      ] ++ mentions ++ author
-    end
+    [
+      {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/activity']},
+      {:"activity:verb", ['http://activitystrea.ms/schema/1.0/unfollow']},
+      {:id, h.(activity.data["id"])},
+      {:title, ['#{user.nickname} stopped following #{follow_activity.data["object"]}']},
+      {:content, [type: 'html'],
+       ['#{user.nickname} stopped following #{follow_activity.data["object"]}']},
+      {:published, h.(inserted_at)},
+      {:updated, h.(updated_at)},
+      {:"activity:object",
+       [
+         {:"activity:object-type", ['http://activitystrea.ms/schema/1.0/person']},
+         {:id, h.(follow_activity.data["object"])},
+         {:uri, h.(follow_activity.data["object"])}
+       ]},
+      {:link, [rel: 'self', type: ['application/atom+xml'], href: h.(activity.data["id"])], []}
+    ] ++ mentions ++ author
  end

  def to_simple_form(%{data: %{"type" => "Delete"}} = activity, user, with_author) do
--- a/lib/pleroma/web/ostatus/handlers/unfollow_handler.ex
+++ b/lib/pleroma/web/ostatus/handlers/unfollow_handler.ex
@ -0,0 +1,17 @@
+defmodule Pleroma.Web.OStatus.UnfollowHandler do
+  alias Pleroma.Web.{XML, OStatus}
+  alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.User
+
+  def handle(entry, doc) do
+    with {:ok, actor} <- OStatus.find_make_or_update_user(doc),
+         id when not is_nil(id) <- XML.string_from_xpath("/entry/id", entry),
+         followed_uri when not is_nil(followed_uri) <-
+           XML.string_from_xpath("/entry/activity:object/id", entry),
+         {:ok, followed} <- OStatus.find_or_make_user(followed_uri),
+         {:ok, activity} <- ActivityPub.unfollow(actor, followed, id, false) do
+      User.unfollow(actor, followed)
+      {:ok, activity}
+    end
+  end
+end
--- a/lib/pleroma/web/ostatus/ostatus.ex
+++ b/lib/pleroma/web/ostatus/ostatus.ex
@ -8,7 +8,7 @@ defmodule Pleroma.Web.OStatus do
  alias Pleroma.{Repo, User, Web, Object, Activity}
  alias Pleroma.Web.ActivityPub.ActivityPub
  alias Pleroma.Web.{WebFinger, Websub}
-  alias Pleroma.Web.OStatus.{FollowHandler, NoteHandler, DeleteHandler}
+  alias Pleroma.Web.OStatus.{FollowHandler, UnfollowHandler, NoteHandler, DeleteHandler}
  alias Pleroma.Web.ActivityPub.Transmogrifier

  def feed_path(user) do
@ -47,6 +47,9 @@ defmodule Pleroma.Web.OStatus do
              'http://activitystrea.ms/schema/1.0/follow' ->
                with {:ok, activity} <- FollowHandler.handle(entry, doc), do: activity

+              'http://activitystrea.ms/schema/1.0/unfollow' ->
+                with {:ok, activity} <- UnfollowHandler.handle(entry, doc), do: activity
+
              'http://activitystrea.ms/schema/1.0/share' ->
                with {:ok, activity, retweeted_activity} <- handle_share(entry, doc),
                     do: [activity, retweeted_activity]
--- a/lib/pleroma/web/router.ex
+++ b/lib/pleroma/web/router.ex
@ -73,6 +73,7 @@ defmodule Pleroma.Web.Router do
  scope "/api/pleroma", Pleroma.Web.TwitterAPI do
    pipe_through(:authenticated_api)
    post("/follow_import", UtilController, :follow_import)
+    post("/change_password", UtilController, :change_password)
    post("/delete_account", UtilController, :delete_account)
  end

@ -103,7 +104,6 @@ defmodule Pleroma.Web.Router do
    get("/domain_blocks", MastodonAPIController, :empty_array)
    get("/follow_requests", MastodonAPIController, :empty_array)
    get("/mutes", MastodonAPIController, :empty_array)
-    get("/lists", MastodonAPIController, :empty_array)

    get("/timelines/home", MastodonAPIController, :home_timeline)

@ -125,6 +125,15 @@ defmodule Pleroma.Web.Router do
    get("/notifications/:id", MastodonAPIController, :get_notification)

    post("/media", MastodonAPIController, :upload)
+
+    get("/lists", MastodonAPIController, :get_lists)
+    get("/lists/:id", MastodonAPIController, :get_list)
+    delete("/lists/:id", MastodonAPIController, :delete_list)
+    post("/lists", MastodonAPIController, :create_list)
+    put("/lists/:id", MastodonAPIController, :rename_list)
+    get("/lists/:id/accounts", MastodonAPIController, :list_accounts)
+    post("/lists/:id/accounts", MastodonAPIController, :add_to_list)
+    delete("/lists/:id/accounts", MastodonAPIController, :remove_from_list)
  end

  scope "/api/web", Pleroma.Web.MastodonAPI do
@ -142,6 +151,7 @@ defmodule Pleroma.Web.Router do

    get("/timelines/public", MastodonAPIController, :public_timeline)
    get("/timelines/tag/:tag", MastodonAPIController, :hashtag_timeline)
+    get("/timelines/list/:list_id", MastodonAPIController, :list_timeline)

    get("/statuses/:id", MastodonAPIController, :get_status)
    get("/statuses/:id/context", MastodonAPIController, :get_context)
--- a/lib/pleroma/web/twitter_api/controllers/util_controller.ex
+++ b/lib/pleroma/web/twitter_api/controllers/util_controller.ex
@ -197,8 +197,31 @@ defmodule Pleroma.Web.TwitterAPI.UtilController do
    json(conn, "job started")
  end

+  def change_password(%{assigns: %{user: user}} = conn, params) do
+    case CommonAPI.Utils.confirm_current_password(user, params["password"]) do
+      {:ok, user} ->
+        with {:ok, _user} <-
+               User.reset_password(user, %{
+                 password: params["new_password"],
+                 password_confirmation: params["new_password_confirmation"]
+               }) do
+          json(conn, %{status: "success"})
+        else
+          {:error, changeset} ->
+            {_, {error, _}} = Enum.at(changeset.errors, 0)
+            json(conn, %{error: "New password #{error}."})
+
+          _ ->
+            json(conn, %{error: "Unable to change password."})
+        end
+
+      {:error, msg} ->
+        json(conn, %{error: msg})
+    end
+  end
+
  def delete_account(%{assigns: %{user: user}} = conn, params) do
-    case CommonAPI.Utils.confirm_current_password(user, params) do
+    case CommonAPI.Utils.confirm_current_password(user, params["password"]) do
      {:ok, user} ->
        Task.start(fn -> User.delete(user) end)
        json(conn, %{status: "success"})
--- a/lib/pleroma/web/twitter_api/representers/activity_representer.ex
+++ b/lib/pleroma/web/twitter_api/representers/activity_representer.ex
@ -99,7 +99,7 @@ defmodule Pleroma.Web.TwitterAPI.Representers.ActivityRepresenter do
      ) do
    created_at = created_at |> Utils.date_to_asctime()

-    text = "#{user.nickname} undid the action at #{undid_activity}"
+    text = "#{user.nickname} undid the action at #{undid_activity["id"]}"

    %{
      "id" => activity.id,
--- a/lib/pleroma/web/twitter_api/twitter_api.ex
+++ b/lib/pleroma/web/twitter_api/twitter_api.ex
@ -25,7 +25,7 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI do

  def follow(%User{} = follower, params) do
    with {:ok, %User{} = followed} <- get_user(params),
-         {:ok, follower} <- User.follow(follower, followed),
+         {:ok, follower} <- User.maybe_direct_follow(follower, followed),
         {:ok, activity} <- ActivityPub.follow(follower, followed) do
      {:ok, follower, followed, activity}
    else
@ -36,14 +36,7 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI do
  def unfollow(%User{} = follower, params) do
    with {:ok, %User{} = unfollowed} <- get_user(params),
         {:ok, follower, follow_activity} <- User.unfollow(follower, unfollowed),
-         {:ok, _activity} <-
-           ActivityPub.insert(%{
-             "type" => "Undo",
-             "actor" => follower.ap_id,
-             # get latest Follow for these users
-             "object" => follow_activity.data["id"],
-             "published" => make_date()
-           }) do
+         {:ok, _activity} <- ActivityPub.unfollow(follower, unfollowed) do
      {:ok, follower, unfollowed}
    else
      err -> err
@ -52,7 +45,8 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI do

  def block(%User{} = blocker, params) do
    with {:ok, %User{} = blocked} <- get_user(params),
-         {:ok, blocker} <- User.block(blocker, blocked) do
+         {:ok, blocker} <- User.block(blocker, blocked),
+         {:ok, _activity} <- ActivityPub.block(blocker, blocked) do
      {:ok, blocker, blocked}
    else
      err -> err
@ -61,7 +55,8 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPI do

  def unblock(%User{} = blocker, params) do
    with {:ok, %User{} = blocked} <- get_user(params),
-         {:ok, blocker} <- User.unblock(blocker, blocked) do
+         {:ok, blocker} <- User.unblock(blocker, blocked),
+         {:ok, _activity} <- ActivityPub.unblock(blocker, blocked) do
      {:ok, blocker, blocked}
    else
      err -> err
--- a/mix.exs
+++ b/mix.exs
@ -36,12 +36,13 @@ defmodule Pleroma.Mixfile do
      {:postgrex, ">= 0.0.0"},
      {:gettext, "~> 0.11"},
      {:cowboy, "~> 1.0", override: true},
-      {:comeonin, "~> 3.0"},
+      {:comeonin, "~> 4.0"},
+      {:pbkdf2_elixir, "~> 0.12"},
      {:trailing_format_plug, "~> 0.0.5"},
      {:html_sanitize_ex, "~> 1.3.0-rc1"},
      {:phoenix_html, "~> 2.10"},
      {:calendar, "~> 0.16.1"},
-      {:cachex, "~> 2.1"},
+      {:cachex, "~> 3.0"},
      {:httpoison, "~> 1.1.0"},
      {:jason, "~> 1.0"},
      {:ex_machina, "~> 2.0", only: :test},
--- a/mix.lock
+++ b/mix.lock
@ -1,42 +1,37 @@
 %{
  "bunt": {:hex, :bunt, "0.2.0", "951c6e801e8b1d2cbe58ebbd3e616a869061ddadcc4863d0a2182541acae9a38", [:mix], [], "hexpm"},
-  "cachex": {:hex, :cachex, "2.1.0", "fad49b4e78d11c6c314e75bd8c9408f5b78cb065c047442798caed10803ee3be", [:mix], [{:eternal, "~> 1.1", [hex: :eternal, repo: "hexpm", optional: false]}], "hexpm"},
+  "cachex": {:hex, :cachex, "3.0.2", "1351caa4e26e29f7d7ec1d29b53d6013f0447630bbf382b4fb5d5bad0209f203", [:mix], [{:eternal, "~> 1.2", [hex: :eternal, repo: "hexpm", optional: false]}, {:unsafe, "~> 1.0", [hex: :unsafe, repo: "hexpm", optional: false]}], "hexpm"},
  "calendar": {:hex, :calendar, "0.16.1", "782327ad8bae7c797b887840dc4ddb933f05ce6e333e5b04964d7a5d5f79bde3", [:mix], [{:tzdata, "~> 0.5.8 or ~> 0.1.201603", [hex: :tzdata, repo: "hexpm", optional: false]}], "hexpm"},
  "certifi": {:hex, :certifi, "2.3.1", "d0f424232390bf47d82da8478022301c561cf6445b5b5fb6a84d49a9e76d2639", [:rebar3], [{:parse_trans, "3.2.0", [hex: :parse_trans, repo: "hexpm", optional: false]}], "hexpm"},
-  "comeonin": {:hex, :comeonin, "3.2.0", "cb10995a22aed6812667efb3856f548818c85d85394d8132bc116fbd6995c1ef", [:make, :mix], [{:elixir_make, "~> 0.4", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm"},
-  "con_cache": {:hex, :con_cache, "0.12.0", "2d961aec219aa5a914473873f348f5a6088292dc69d5192a9d25f8a1e13e9905", [:mix], [{:exactor, "~> 2.2.0", [hex: :exactor, optional: false]}]},
+  "comeonin": {:hex, :comeonin, "4.1.1", "c7304fc29b45b897b34142a91122bc72757bc0c295e9e824999d5179ffc08416", [:mix], [{:argon2_elixir, "~> 1.2", [hex: :argon2_elixir, repo: "hexpm", optional: true]}, {:bcrypt_elixir, "~> 0.12.1 or ~> 1.0", [hex: :bcrypt_elixir, repo: "hexpm", optional: true]}, {:pbkdf2_elixir, "~> 0.12", [hex: :pbkdf2_elixir, repo: "hexpm", optional: true]}], "hexpm"},
  "connection": {:hex, :connection, "1.0.4", "a1cae72211f0eef17705aaededacac3eb30e6625b04a6117c1b2db6ace7d5976", [:mix], [], "hexpm"},
  "cowboy": {:hex, :cowboy, "1.1.2", "61ac29ea970389a88eca5a65601460162d370a70018afe6f949a29dca91f3bb0", [:rebar3], [{:cowlib, "~> 1.0.2", [hex: :cowlib, repo: "hexpm", optional: false]}, {:ranch, "~> 1.3.2", [hex: :ranch, repo: "hexpm", optional: false]}], "hexpm"},
  "cowlib": {:hex, :cowlib, "1.0.2", "9d769a1d062c9c3ac753096f868ca121e2730b9a377de23dec0f7e08b1df84ee", [:make], [], "hexpm"},
-  "credo": {:hex, :credo, "0.9.1", "f021affa11b32a94dc2e807a6472ce0914289c9132f99644a97fc84432b202a1", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:poison, ">= 0.0.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm"},
+  "credo": {:hex, :credo, "0.9.2", "841d316612f568beb22ba310d816353dddf31c2d94aa488ae5a27bb53760d0bf", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:poison, ">= 0.0.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm"},
  "db_connection": {:hex, :db_connection, "1.1.3", "89b30ca1ef0a3b469b1c779579590688561d586694a3ce8792985d4d7e575a61", [:mix], [{:connection, "~> 1.0.2", [hex: :connection, repo: "hexpm", optional: false]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: true]}, {:sbroker, "~> 1.0", [hex: :sbroker, repo: "hexpm", optional: true]}], "hexpm"},
  "decimal": {:hex, :decimal, "1.5.0", "b0433a36d0e2430e3d50291b1c65f53c37d56f83665b43d79963684865beab68", [:mix], [], "hexpm"},
-  "deppie": {:hex, :deppie, "1.1.0", "cfb6fcee7dfb64eb78cb8505537971a0805131899326ad469ef10df04520f451", [:mix], []},
  "ecto": {:hex, :ecto, "2.2.10", "e7366dc82f48f8dd78fcbf3ab50985ceeb11cb3dc93435147c6e13f2cda0992e", [:mix], [{:db_connection, "~> 1.1", [hex: :db_connection, repo: "hexpm", optional: true]}, {:decimal, "~> 1.2", [hex: :decimal, repo: "hexpm", optional: false]}, {:mariaex, "~> 0.8.0", [hex: :mariaex, repo: "hexpm", optional: true]}, {:poison, "~> 2.2 or ~> 3.0", [hex: :poison, repo: "hexpm", optional: true]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: false]}, {:postgrex, "~> 0.13.0", [hex: :postgrex, repo: "hexpm", optional: true]}, {:sbroker, "~> 1.0", [hex: :sbroker, repo: "hexpm", optional: true]}], "hexpm"},
-  "elixir_make": {:hex, :elixir_make, "0.4.1", "6628b86053190a80b9072382bb9756a6c78624f208ec0ff22cb94c8977d80060", [:mix], [], "hexpm"},
  "eternal": {:hex, :eternal, "1.2.0", "e2a6b6ce3b8c248f7dc31451aefca57e3bdf0e48d73ae5043229380a67614c41", [:mix], [], "hexpm"},
  "ex_machina": {:hex, :ex_machina, "2.2.0", "fec496331e04fc2db2a1a24fe317c12c0c4a50d2beb8ebb3531ed1f0d84be0ed", [:mix], [{:ecto, "~> 2.1", [hex: :ecto, repo: "hexpm", optional: true]}], "hexpm"},
-  "exactor": {:hex, :exactor, "2.2.3", "a6972f43bb6160afeb73e1d8ab45ba604cd0ac8b5244c557093f6e92ce582786", [:mix], []},
-  "fs": {:hex, :fs, "2.12.0", "ad631efacc9a5683c8eaa1b274e24fa64a1b8eb30747e9595b93bec7e492e25e", [:rebar3], []},
  "gettext": {:hex, :gettext, "0.15.0", "40a2b8ce33a80ced7727e36768499fc9286881c43ebafccae6bab731e2b2b8ce", [:mix], [], "hexpm"},
  "hackney": {:hex, :hackney, "1.12.1", "8bf2d0e11e722e533903fe126e14d6e7e94d9b7983ced595b75f532e04b7fdc7", [:rebar3], [{:certifi, "2.3.1", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "5.1.1", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.1", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm"},
  "html_sanitize_ex": {:hex, :html_sanitize_ex, "1.3.0", "f005ad692b717691203f940c686208aa3d8ffd9dd4bb3699240096a51fa9564e", [:mix], [{:mochiweb, "~> 2.15", [hex: :mochiweb, repo: "hexpm", optional: false]}], "hexpm"},
-  "httpoison": {:hex, :httpoison, "1.1.0", "497949fb62924432f64a45269d20e6f61ecf35084ffa270917afcdb7cd4d8061", [:mix], [{:hackney, "~> 1.8", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
+  "httpoison": {:hex, :httpoison, "1.1.1", "96ed7ab79f78a31081bb523eefec205fd2900a02cda6dbc2300e7a1226219566", [:mix], [{:hackney, "~> 1.8", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
  "idna": {:hex, :idna, "5.1.1", "cbc3b2fa1645113267cc59c760bafa64b2ea0334635ef06dbac8801e42f7279c", [:rebar3], [{:unicode_util_compat, "0.3.1", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm"},
  "jason": {:hex, :jason, "1.0.0", "0f7cfa9bdb23fed721ec05419bcee2b2c21a77e926bce0deda029b5adc716fe2", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm"},
  "meck": {:hex, :meck, "0.8.9", "64c5c0bd8bcca3a180b44196265c8ed7594e16bcc845d0698ec6b4e577f48188", [:rebar3], [], "hexpm"},
  "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm"},
  "mime": {:hex, :mime, "1.2.0", "78adaa84832b3680de06f88f0997e3ead3b451a440d183d688085be2d709b534", [:mix], [], "hexpm"},
  "mimerl": {:hex, :mimerl, "1.0.2", "993f9b0e084083405ed8252b99460c4f0563e41729ab42d9074fd5e52439be88", [:rebar3], [], "hexpm"},
-  "mix_test_watch": {:hex, :mix_test_watch, "0.3.3", "70859889a8d1d43d1b75d69d87258a301f43209a17787cdb2bd9cab42adf271d", [:mix], [{:fs, "~> 2.12", [hex: :fs, optional: false]}]},
  "mochiweb": {:hex, :mochiweb, "2.15.0", "e1daac474df07651e5d17cc1e642c4069c7850dc4508d3db7263a0651330aacc", [:rebar3], [], "hexpm"},
  "mock": {:hex, :mock, "0.3.1", "994f00150f79a0ea50dc9d86134cd9ebd0d177ad60bd04d1e46336cdfdb98ff9", [:mix], [{:meck, "~> 0.8.8", [hex: :meck, repo: "hexpm", optional: false]}], "hexpm"},
  "parse_trans": {:hex, :parse_trans, "3.2.0", "2adfa4daf80c14dc36f522cf190eb5c4ee3e28008fc6394397c16f62a26258c2", [:rebar3], [], "hexpm"},
+  "pbkdf2_elixir": {:hex, :pbkdf2_elixir, "0.12.3", "6706a148809a29c306062862c803406e88f048277f6e85b68faf73291e820b84", [:mix], [], "hexpm"},
  "phoenix": {:hex, :phoenix, "1.3.2", "2a00d751f51670ea6bc3f2ba4e6eb27ecb8a2c71e7978d9cd3e5de5ccf7378bd", [:mix], [{:cowboy, "~> 1.0", [hex: :cowboy, repo: "hexpm", optional: true]}, {:phoenix_pubsub, "~> 1.0", [hex: :phoenix_pubsub, repo: "hexpm", optional: false]}, {:plug, "~> 1.3.3 or ~> 1.4", [hex: :plug, repo: "hexpm", optional: false]}, {:poison, "~> 2.2 or ~> 3.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm"},
  "phoenix_ecto": {:hex, :phoenix_ecto, "3.3.0", "702f6e164512853d29f9d20763493f2b3bcfcb44f118af2bc37bb95d0801b480", [:mix], [{:ecto, "~> 2.1", [hex: :ecto, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 2.9", [hex: :phoenix_html, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
-  "phoenix_html": {:hex, :phoenix_html, "2.11.1", "77b6f7fbd252168c6ec4f573de648d37cc5258cda13266ef001fbf99267eb6f3", [:mix], [{:plug, "~> 1.5", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
+  "phoenix_html": {:hex, :phoenix_html, "2.11.2", "86ebd768258ba60a27f5578bec83095bdb93485d646fc4111db8844c316602d6", [:mix], [{:plug, "~> 1.5", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
  "phoenix_pubsub": {:hex, :phoenix_pubsub, "1.0.2", "bfa7fd52788b5eaa09cb51ff9fcad1d9edfeb68251add458523f839392f034c1", [:mix], [], "hexpm"},
-  "plug": {:hex, :plug, "1.5.0", "224b25b4039bedc1eac149fb52ed456770b9678bbf0349cdd810460e1e09195b", [:mix], [{:cowboy, "~> 1.0.1 or ~> 1.1 or ~> 2.1", [hex: :cowboy, repo: "hexpm", optional: true]}, {:mime, "~> 1.0", [hex: :mime, repo: "hexpm", optional: false]}], "hexpm"},
+  "plug": {:hex, :plug, "1.5.1", "1ff35bdecfb616f1a2b1c935ab5e4c47303f866cb929d2a76f0541e553a58165", [:mix], [{:cowboy, "~> 1.0.1 or ~> 1.1 or ~> 2.3", [hex: :cowboy, repo: "hexpm", optional: true]}, {:mime, "~> 1.0", [hex: :mime, repo: "hexpm", optional: false]}], "hexpm"},
  "poison": {:hex, :poison, "3.1.0", "d9eb636610e096f86f25d9a46f35a9facac35609a7591b3be3326e99a0484665", [:mix], [], "hexpm"},
  "poolboy": {:hex, :poolboy, "1.5.1", "6b46163901cfd0a1b43d692657ed9d7e599853b3b21b95ae5ae0a777cf9b6ca8", [:rebar], [], "hexpm"},
  "postgrex": {:hex, :postgrex, "0.13.5", "3d931aba29363e1443da167a4b12f06dcd171103c424de15e5f3fc2ba3e6d9c5", [:mix], [{:connection, "~> 1.0", [hex: :connection, repo: "hexpm", optional: false]}, {:db_connection, "~> 1.1", [hex: :db_connection, repo: "hexpm", optional: false]}, {:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: false]}], "hexpm"},
@ -45,4 +40,5 @@
  "trailing_format_plug": {:hex, :trailing_format_plug, "0.0.7", "64b877f912cf7273bed03379936df39894149e35137ac9509117e59866e10e45", [:mix], [{:plug, "> 0.12.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
  "tzdata": {:hex, :tzdata, "0.5.16", "13424d3afc76c68ff607f2df966c0ab4f3258859bbe3c979c9ed1606135e7352", [:mix], [{:hackney, "~> 1.0", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
  "unicode_util_compat": {:hex, :unicode_util_compat, "0.3.1", "a1f612a7b512638634a603c8f401892afbf99b8ce93a45041f8aaca99cadb85e", [:rebar3], [], "hexpm"},
+  "unsafe": {:hex, :unsafe, "1.0.0", "7c21742cd05380c7875546b023481d3a26f52df8e5dfedcb9f958f322baae305", [:mix], [], "hexpm"},
 }
--- a/priv/repo/migrations/20180429094642_create_lists.exs
+++ b/priv/repo/migrations/20180429094642_create_lists.exs
@ -0,0 +1,15 @@
+defmodule Pleroma.Repo.Migrations.CreateLists do
+  use Ecto.Migration
+
+  def change do
+    create table(:lists) do
+      add :user_id, references(:users, on_delete: :delete_all)
+      add :title, :string
+      add :following, {:array, :string}
+
+      timestamps()
+    end
+
+    create index(:lists, [:user_id])
+  end
+end
--- a/priv/static/index.html
+++ b/priv/static/index.html
@ -1 +1 @@
-<!DOCTYPE html><html lang=en><head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><title>Pleroma</title><link rel=icon type=image/png href=/favicon.png><link rel=stylesheet href=/static/font/css/fontello.css><link rel=stylesheet href=/static/font/css/animation.css><link href=/static/css/app.c0e1e1e1fcff94fd1e14fc44bfee9a1e.css rel=stylesheet></head><body style="display: none"><div id=app></div><script type=text/javascript src=/static/js/manifest.f40706e221610d4c6256.js></script><script type=text/javascript src=/static/js/vendor.56aa9f8c34786f6af6b7.js></script><script type=text/javascript src=/static/js/app.029b23b3921537271958.js></script></body></html>
+<!DOCTYPE html><html lang=en><head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><title>Pleroma</title><link rel=icon type=image/png href=/favicon.png><link rel=stylesheet href=/static/font/css/fontello.css><link rel=stylesheet href=/static/font/css/animation.css><link href=/static/css/app.c0e1e1e1fcff94fd1e14fc44bfee9a1e.css rel=stylesheet></head><body style="display: none"><div id=app></div><script type=text/javascript src=/static/js/manifest.16ab7851cdbf730f9cbc.js></script><script type=text/javascript src=/static/js/vendor.56aa9f8c34786f6af6b7.js></script><script type=text/javascript src=/static/js/app.13c0bda10eb515cdf8ed.js></script></body></html>
--- a/priv/static/static/js/app.029b23b3921537271958.js
+++ b/priv/static/static/js/app.029b23b3921537271958.js
--- a/priv/static/static/js/app.029b23b3921537271958.js.map
+++ b/priv/static/static/js/app.029b23b3921537271958.js.map
--- a/priv/static/static/js/app.13c0bda10eb515cdf8ed.js
+++ b/priv/static/static/js/app.13c0bda10eb515cdf8ed.js
--- a/priv/static/static/js/app.13c0bda10eb515cdf8ed.js.map
+++ b/priv/static/static/js/app.13c0bda10eb515cdf8ed.js.map
--- a/priv/static/static/js/manifest.16ab7851cdbf730f9cbc.js
+++ b/priv/static/static/js/manifest.16ab7851cdbf730f9cbc.js
@ -0,0 +1,2 @@
+!function(e){function t(a){if(r[a])return r[a].exports;var n=r[a]={exports:{},id:a,loaded:!1};return e[a].call(n.exports,n,n.exports,t),n.loaded=!0,n.exports}var a=window.webpackJsonp;window.webpackJsonp=function(c,o){for(var p,l,s=0,i=[];s<c.length;s++)l=c[s],n[l]&&i.push.apply(i,n[l]),n[l]=0;for(p in o)Object.prototype.hasOwnProperty.call(o,p)&&(e[p]=o[p]);for(a&&a(c,o);i.length;)i.shift().call(null,t);if(o[0])return r[0]=0,t(0)};var r={},n={0:0};t.e=function(e,a){if(0===n[e])return a.call(null,t);if(void 0!==n[e])n[e].push(a);else{n[e]=[a];var r=document.getElementsByTagName("head")[0],c=document.createElement("script");c.type="text/javascript",c.charset="utf-8",c.async=!0,c.src=t.p+"static/js/"+e+"."+{1:"56aa9f8c34786f6af6b7",2:"13c0bda10eb515cdf8ed"}[e]+".js",r.appendChild(c)}},t.m=e,t.c=r,t.p="/"}([]);
+//# sourceMappingURL=manifest.16ab7851cdbf730f9cbc.js.map
--- a/priv/static/static/js/manifest.16ab7851cdbf730f9cbc.js.map
+++ b/priv/static/static/js/manifest.16ab7851cdbf730f9cbc.js.map
--- a/priv/static/static/js/manifest.f40706e221610d4c6256.js
+++ b/priv/static/static/js/manifest.f40706e221610d4c6256.js
@ -1,2 +0,0 @@
-!function(e){function t(r){if(a[r])return a[r].exports;var n=a[r]={exports:{},id:r,loaded:!1};return e[r].call(n.exports,n,n.exports,t),n.loaded=!0,n.exports}var r=window.webpackJsonp;window.webpackJsonp=function(o,p){for(var c,l,s=0,i=[];s<o.length;s++)l=o[s],n[l]&&i.push.apply(i,n[l]),n[l]=0;for(c in p)Object.prototype.hasOwnProperty.call(p,c)&&(e[c]=p[c]);for(r&&r(o,p);i.length;)i.shift().call(null,t);if(p[0])return a[0]=0,t(0)};var a={},n={0:0};t.e=function(e,r){if(0===n[e])return r.call(null,t);if(void 0!==n[e])n[e].push(r);else{n[e]=[r];var a=document.getElementsByTagName("head")[0],o=document.createElement("script");o.type="text/javascript",o.charset="utf-8",o.async=!0,o.src=t.p+"static/js/"+e+"."+{1:"56aa9f8c34786f6af6b7",2:"029b23b3921537271958"}[e]+".js",a.appendChild(o)}},t.m=e,t.c=a,t.p="/"}([]);
-//# sourceMappingURL=manifest.f40706e221610d4c6256.js.map
--- a/test/fixtures/mastodon-block-activity.json
+++ b/test/fixtures/mastodon-block-activity.json
@ -0,0 +1,29 @@
+{
+  "type": "Block",
+  "signature": {
+    "type": "RsaSignature2017",
+    "signatureValue": "Kn1/UkAQGJVaXBfWLAHcnwHg8YMAUqlEaBuYLazAG+pz5hqivsyrBmPV186Xzr+B4ZLExA9+SnOoNx/GOz4hBm0kAmukNSILAsUd84tcJ2yT9zc1RKtembK4WiwOw7li0+maeDN0HaB6t+6eTqsCWmtiZpprhXD8V1GGT8yG7X24fQ9oFGn+ng7lasbcCC0988Y1eGqNe7KryxcPuQz57YkDapvtONzk8gyLTkZMV4De93MyRHq6GVjQVIgtiYabQAxrX6Q8C+4P/jQoqdWJHEe+MY5JKyNaT/hMPt2Md1ok9fZQBGHlErk22/zy8bSN19GdG09HmIysBUHRYpBLig==",
+    "creator": "http://mastodon.example.org/users/admin#main-key",
+    "created": "2018-02-17T13:29:31Z"
+  },
+  "object": "http://localtesting.pleroma.lol/users/lain",
+  "nickname": "lain",
+  "id": "http://mastodon.example.org/users/admin#follows/2",
+  "actor": "http://mastodon.example.org/users/admin",
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    "https://w3id.org/security/v1",
+    {
+      "toot": "http://joinmastodon.org/ns#",
+      "sensitive": "as:sensitive",
+      "ostatus": "http://ostatus.org#",
+      "movedTo": "as:movedTo",
+      "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
+      "inReplyToAtomUri": "ostatus:inReplyToAtomUri",
+      "conversation": "ostatus:conversation",
+      "atomUri": "ostatus:atomUri",
+      "Hashtag": "as:Hashtag",
+      "Emoji": "toot:Emoji"
+    }
+  ]
+}
--- a/test/fixtures/mastodon-reject-activity.json
+++ b/test/fixtures/mastodon-reject-activity.json
@ -0,0 +1,34 @@
+{
+  "type": "Reject",
+  "signature": {
+    "type": "RsaSignature2017",
+    "signatureValue": "rBzK4Kqhd4g7HDS8WE5oRbWQb2R+HF/6awbUuMWhgru/xCODT0SJWSri0qWqEO4fPcpoUyz2d25cw6o+iy9wiozQb3hQNnu69AR+H5Mytc06+g10KCHexbGhbAEAw/7IzmeXELHUbaqeduaDIbdt1zw4RkwLXdqgQcGXTJ6ND1wM3WMHXQCK1m0flasIXFoBxpliPAGiElV8s0+Ltuh562GvflG3kB3WO+j+NaR0ZfG5G9N88xMj9UQlCKit5gpAE5p6syUsCU2WGBHywTumv73i3OVTIFfq+P9AdMsRuzw1r7zoKEsthW4aOzLQDi01ZjvdBz8zH6JnjDU7SMN/Ig==",
+    "creator": "http://mastodon.example.org/users/admin#main-key",
+    "created": "2018-02-17T14:36:41Z"
+  },
+  "object": {
+    "type": "Follow",
+    "object": "http://mastodon.example.org/users/admin",
+    "id": "http://localtesting.pleroma.lol/users/lain#follows/4",
+    "actor": "http://localtesting.pleroma.lol/users/lain"
+  },
+  "nickname": "lain",
+  "id": "http://mastodon.example.org/users/admin#rejects/follows/4",
+  "actor": "http://mastodon.example.org/users/admin",
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    "https://w3id.org/security/v1",
+    {
+      "toot": "http://joinmastodon.org/ns#",
+      "sensitive": "as:sensitive",
+      "ostatus": "http://ostatus.org#",
+      "movedTo": "as:movedTo",
+      "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
+      "inReplyToAtomUri": "ostatus:inReplyToAtomUri",
+      "conversation": "ostatus:conversation",
+      "atomUri": "ostatus:atomUri",
+      "Hashtag": "as:Hashtag",
+      "Emoji": "toot:Emoji"
+    }
+  ]
+}
--- a/test/fixtures/mastodon-unblock-activity.json
+++ b/test/fixtures/mastodon-unblock-activity.json
@ -0,0 +1,34 @@
+{
+    "@context": [
+            "https://www.w3.org/ns/activitystreams",
+            "https://w3id.org/security/v1",
+            {
+              "toot": "http://joinmastodon.org/ns#",
+              "sensitive": "as:sensitive",
+              "ostatus": "http://ostatus.org#",
+              "movedTo": "as:movedTo",
+              "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
+              "inReplyToAtomUri": "ostatus:inReplyToAtomUri",
+              "conversation": "ostatus:conversation",
+              "atomUri": "ostatus:atomUri",
+              "Hashtag": "as:Hashtag",
+              "Emoji": "toot:Emoji"
+            }
+          ],
+    "signature": {
+        "type": "RsaSignature2017",
+        "signatureValue": "Kn1/UkAQGJVaXBfWLAHcnwHg8YMAUqlEaBuYLazAG+pz5hqivsyrBmPV186Xzr+B4ZLExA9+SnOoNx/GOz4hBm0kAmukNSILAsUd84tcJ2yT9zc1RKtembK4WiwOw7li0+maeDN0HaB6t+6eTqsCWmtiZpprhXD8V1GGT8yG7X24fQ9oFGn+ng7lasbcCC0988Y1eGqNe7KryxcPuQz57YkDapvtONzk8gyLTkZMV4De93MyRHq6GVjQVIgtiYabQAxrX6Q8C+4P/jQoqdWJHEe+MY5JKyNaT/hMPt2Md1ok9fZQBGHlErk22/zy8bSN19GdG09HmIysBUHRYpBLig==",
+        "creator": "http://mastodon.example.org/users/admin#main-key",
+        "created": "2018-02-17T13:29:31Z"
+      },
+    "type": "Undo",
+    "object": {
+      "type": "Block", 
+      "object": "http://localtesting.pleroma.lol/users/lain",
+      "nickname": "lain",
+      "id": "http://mastodon.example.org/users/admin#blocks/2",
+      "actor": "http://mastodon.example.org/users/admin" 
+    },
+    "actor": "http://mastodon.example.org/users/admin",
+    "id": "http://mastodon.example.org/users/admin#blocks/2/undo"
+}
--- a/test/fixtures/mastodon-unfollow-activity.json
+++ b/test/fixtures/mastodon-unfollow-activity.json
@ -0,0 +1,34 @@
+{
+   "@context":[
+      "https://www.w3.org/ns/activitystreams",
+      "https://w3id.org/security/v1",
+      {
+         "toot":"http://joinmastodon.org/ns#",
+         "sensitive":"as:sensitive",
+         "ostatus":"http://ostatus.org#",
+         "movedTo":"as:movedTo",
+         "manuallyApprovesFollowers":"as:manuallyApprovesFollowers",
+         "inReplyToAtomUri":"ostatus:inReplyToAtomUri",
+         "conversation":"ostatus:conversation",
+         "atomUri":"ostatus:atomUri",
+         "Hashtag":"as:Hashtag",
+         "Emoji":"toot:Emoji"
+      }
+   ],
+   "signature":{
+      "type":"RsaSignature2017",
+      "signatureValue":"Kn1/UkAQGJVaXBfWLAHcnwHg8YMAUqlEaBuYLazAG+pz5hqivsyrBmPV186Xzr+B4ZLExA9+SnOoNx/GOz4hBm0kAmukNSILAsUd84tcJ2yT9zc1RKtembK4WiwOw7li0+maeDN0HaB6t+6eTqsCWmtiZpprhXD8V1GGT8yG7X24fQ9oFGn+ng7lasbcCC0988Y1eGqNe7KryxcPuQz57YkDapvtONzk8gyLTkZMV4De93MyRHq6GVjQVIgtiYabQAxrX6Q8C+4P/jQoqdWJHEe+MY5JKyNaT/hMPt2Md1ok9fZQBGHlErk22/zy8bSN19GdG09HmIysBUHRYpBLig==",
+      "creator":"http://mastodon.example.org/users/admin#main-key",
+      "created":"2018-02-17T13:29:31Z"
+   },
+   "type":"Undo",
+   "object":{
+      "type":"Follow",
+      "object":"http://localtesting.pleroma.lol/users/lain",
+      "nickname":"lain",
+      "id":"http://mastodon.example.org/users/admin#follows/2",
+      "actor":"http://mastodon.example.org/users/admin"
+   },
+   "actor":"http://mastodon.example.org/users/admin",
+   "id": "http://mastodon.example.org/users/admin#follow/2/undo"
+}
--- a/test/fixtures/unfollow.xml
+++ b/test/fixtures/unfollow.xml
@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<feed xml:lang="en-US" xmlns="http://www.w3.org/2005/Atom" xmlns:thr="http://purl.org/syndication/thread/1.0" xmlns:georss="http://www.georss.org/georss" xmlns:activity="http://activitystrea.ms/spec/1.0/" xmlns:media="http://purl.org/syndication/atommedia" xmlns:poco="http://portablecontacts.net/spec/1.0" xmlns:ostatus="http://ostatus.org/schema/1.0" xmlns:statusnet="http://status.net/schema/api/1/">
+ <generator uri="https://gnu.io/social" version="1.0.2-dev">GNU social</generator>
+ <id>https://social.heldscal.la/api/statuses/user_timeline/23211.atom</id>
+ <title>lambadalambda timeline</title>
+ <subtitle>Updates from lambadalambda on social.heldscal.la!</subtitle>
+ <logo>https://social.heldscal.la/avatar/23211-96-20170416114255.jpeg</logo>
+ <updated>2017-05-07T09:54:49+00:00</updated>
+<author>
+ <activity:object-type>http://activitystrea.ms/schema/1.0/person</activity:object-type>
+ <uri>https://social.heldscal.la/user/23211</uri>
+ <name>lambadalambda</name>
+ <summary>Call me Deacon Blues.</summary>
+ <link rel="alternate" type="text/html" href="https://social.heldscal.la/lambadalambda"/>
+ <link rel="avatar" type="image/jpeg" media:width="236" media:height="236" href="https://social.heldscal.la/avatar/23211-original-20170416114255.jpeg"/>
+ <link rel="avatar" type="image/jpeg" media:width="96" media:height="96" href="https://social.heldscal.la/avatar/23211-96-20170416114255.jpeg"/>
+ <link rel="avatar" type="image/jpeg" media:width="48" media:height="48" href="https://social.heldscal.la/avatar/23211-48-20170416114255.jpeg"/>
+ <link rel="avatar" type="image/jpeg" media:width="24" media:height="24" href="https://social.heldscal.la/avatar/23211-24-20170416114257.jpeg"/>
+ <poco:preferredUsername>lambadalambda</poco:preferredUsername>
+ <poco:displayName>Constance Variable</poco:displayName>
+ <poco:note>Call me Deacon Blues.</poco:note>
+ <poco:address>
+  <poco:formatted>Berlin</poco:formatted>
+ </poco:address>
+ <poco:urls>
+  <poco:type>homepage</poco:type>
+  <poco:value>https://heldscal.la</poco:value>
+  <poco:primary>true</poco:primary>
+ </poco:urls>
+ <followers url="https://social.heldscal.la/lambadalambda/subscribers"></followers>
+ <statusnet:profile_info local_id="23211"></statusnet:profile_info>
+</author>
+ <link href="https://social.heldscal.la/lambadalambda" rel="alternate" type="text/html"/>
+ <link href="https://social.heldscal.la/main/sup" rel="http://api.friendfeed.com/2008/03#sup" type="application/json"/>
+ <link href="https://social.heldscal.la/main/push/hub" rel="hub"/>
+ <link href="https://social.heldscal.la/main/salmon/user/23211" rel="salmon"/>
+ <link href="https://social.heldscal.la/main/salmon/user/23211" rel="http://salmon-protocol.org/ns/salmon-replies"/>
+ <link href="https://social.heldscal.la/main/salmon/user/23211" rel="http://salmon-protocol.org/ns/salmon-mention"/>
+ <link href="https://social.heldscal.la/api/statuses/user_timeline/23211.atom" rel="self" type="application/atom+xml"/>
+<entry>
+ <id>undo:tag:social.heldscal.la,2017-05-07:subscription:23211:person:44803:2017-05-07T09:54:48+00:00</id>
+ <title>Constance Variable (lambadalambda@social.heldscal.la)'s status on Sunday, 07-May-2017 09:54:49 UTC</title>
+ <content type="html">&lt;a href=&quot;https://social.heldscal.la/lambadalambda&quot;&gt;Constance Variable&lt;/a&gt; stopped following &lt;a href=&quot;https://pawoo.net/@pekorino&quot;&gt;ｍｏｎｏ&lt;/a&gt;.</content>
+ <link rel="alternate" type="text/html" href="https://social.heldscal.la/notice/2092981"/>
+ <activity:verb>http://activitystrea.ms/schema/1.0/unfollow</activity:verb>
+ <published>2017-05-07T09:54:49+00:00</published>
+ <updated>2017-05-07T09:54:49+00:00</updated>
+ <activity:object>
+  <activity:object-type>http://activitystrea.ms/schema/1.0/person</activity:object-type>
+  <id>https://pawoo.net/users/pekorino</id>
+  <title>ｍｏｎｏ</title>
+  <summary>http://shitposter.club/mono   孤独のグルメ</summary>
+  <link rel="alternate" type="text/html" href="https://pawoo.net/@pekorino"/>
+  <link rel="avatar" type="image/png" media:width="96" media:height="96" href="http://social.heldscal.la/theme/neo-gnu/default-avatar-profile.png"/>
+  <link rel="avatar" type="image/png" media:width="48" media:height="48" href="http://social.heldscal.la/theme/neo-gnu/default-avatar-stream.png"/>
+  <link rel="avatar" type="image/png" media:width="24" media:height="24" href="http://social.heldscal.la/theme/neo-gnu/default-avatar-mini.png"/>
+  <poco:preferredUsername>pekorino</poco:preferredUsername>
+  <poco:displayName>ｍｏｎｏ</poco:displayName>
+  <poco:note>http://shitposter.club/mono   孤独のグルメ</poco:note>
+ </activity:object>
+ <link rel="ostatus:conversation" href="https://social.heldscal.la/conversation/1079786"/>
+ <ostatus:conversation href="https://social.heldscal.la/conversation/1079786" local_id="1079786" ref="tag:social.heldscal.la,2017-05-07:objectType=thread:nonce=6e80caf94e03029f">tag:social.heldscal.la,2017-05-07:objectType=thread:nonce=6e80caf94e03029f</ostatus:conversation>
+ <link rel="mentioned" ostatus:object-type="http://activitystrea.ms/schema/1.0/collection" href="http://activityschema.org/collection/public"/>
+ <link rel="self" type="application/atom+xml" href="https://social.heldscal.la/api/statuses/show/2092981.atom"/>
+ <link rel="edit" type="application/atom+xml" href="https://social.heldscal.la/api/statuses/show/2092981.atom"/>
+ <statusnet:notice_info local_id="2092981" source="activity"></statusnet:notice_info>
+</entry>
+</feed>
--- a/test/list_test.exs
+++ b/test/list_test.exs
@ -0,0 +1,77 @@
+defmodule Pleroma.ListTest do
+  alias Pleroma.{User, Repo}
+  use Pleroma.DataCase
+
+  import Pleroma.Factory
+  import Ecto.Query
+
+  test "creating a list" do
+    user = insert(:user)
+    {:ok, %Pleroma.List{} = list} = Pleroma.List.create("title", user)
+    %Pleroma.List{title: title} = Pleroma.List.get(list.id, user)
+    assert title == "title"
+  end
+
+  test "getting a list not belonging to the user" do
+    user = insert(:user)
+    other_user = insert(:user)
+    {:ok, %Pleroma.List{} = list} = Pleroma.List.create("title", user)
+    ret = Pleroma.List.get(list.id, other_user)
+    assert is_nil(ret)
+  end
+
+  test "adding an user to a list" do
+    user = insert(:user)
+    other_user = insert(:user)
+    {:ok, list} = Pleroma.List.create("title", user)
+    {:ok, %{following: following}} = Pleroma.List.follow(list, other_user)
+    assert [other_user.follower_address] == following
+  end
+
+  test "removing an user from a list" do
+    user = insert(:user)
+    other_user = insert(:user)
+    {:ok, list} = Pleroma.List.create("title", user)
+    {:ok, %{following: following}} = Pleroma.List.follow(list, other_user)
+    {:ok, %{following: following}} = Pleroma.List.unfollow(list, other_user)
+    assert [] == following
+  end
+
+  test "renaming a list" do
+    user = insert(:user)
+    {:ok, list} = Pleroma.List.create("title", user)
+    {:ok, %{title: title}} = Pleroma.List.rename(list, "new")
+    assert "new" == title
+  end
+
+  test "deleting a list" do
+    user = insert(:user)
+    {:ok, list} = Pleroma.List.create("title", user)
+    {:ok, list} = Pleroma.List.delete(list)
+    assert is_nil(Repo.get(Pleroma.List, list.id))
+  end
+
+  test "getting users in a list" do
+    user = insert(:user)
+    other_user = insert(:user)
+    third_user = insert(:user)
+    {:ok, list} = Pleroma.List.create("title", user)
+    {:ok, list} = Pleroma.List.follow(list, other_user)
+    {:ok, list} = Pleroma.List.follow(list, third_user)
+    {:ok, following} = Pleroma.List.get_following(list)
+    assert other_user in following
+    assert third_user in following
+  end
+
+  test "getting all lists by an user" do
+    user = insert(:user)
+    other_user = insert(:user)
+    {:ok, list_one} = Pleroma.List.create("title", user)
+    {:ok, list_two} = Pleroma.List.create("other title", user)
+    {:ok, list_three} = Pleroma.List.create("third title", other_user)
+    lists = Pleroma.List.for_user(user, %{})
+    assert list_one in lists
+    assert list_two in lists
+    refute list_three in lists
+  end
+end
--- a/test/support/factory.ex
+++ b/test/support/factory.ex
@ -122,7 +122,8 @@ defmodule Pleroma.Factory do
    }

    %Pleroma.Activity{
-      data: data
+      data: data,
+      actor: follower.ap_id
    }
  end

--- a/test/user_test.exs
+++ b/test/user_test.exs
@ -46,6 +46,15 @@ defmodule Pleroma.UserTest do
    {:error, _} = User.follow(user, followed)
  end

+  test "can't follow a user who blocked us" do
+    blocker = insert(:user)
+    blockee = insert(:user)
+
+    {:ok, blocker} = User.block(blocker, blockee)
+
+    {:error, _} = User.follow(blockee, blocker)
+  end
+
  # This is a somewhat useless test.
  # test "following a remote user will ensure a websub subscription is present" do
  #   user = insert(:user)
--- a/test/web/activity_pub/activity_pub_test.exs
+++ b/test/web/activity_pub/activity_pub_test.exs
@ -425,7 +425,40 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubTest do

      assert activity.data["type"] == "Undo"
      assert activity.data["actor"] == follower.ap_id
-      assert activity.data["object"] == follow_activity.data["id"]
+
+      assert is_map(activity.data["object"])
+      assert activity.data["object"]["type"] == "Follow"
+      assert activity.data["object"]["object"] == followed.ap_id
+      assert activity.data["object"]["id"] == follow_activity.data["id"]
+    end
+  end
+
+  describe "blocking / unblocking" do
+    test "creates a block activity" do
+      blocker = insert(:user)
+      blocked = insert(:user)
+
+      {:ok, activity} = ActivityPub.block(blocker, blocked)
+
+      assert activity.data["type"] == "Block"
+      assert activity.data["actor"] == blocker.ap_id
+      assert activity.data["object"] == blocked.ap_id
+    end
+
+    test "creates an undo activity for the last block" do
+      blocker = insert(:user)
+      blocked = insert(:user)
+
+      {:ok, block_activity} = ActivityPub.block(blocker, blocked)
+      {:ok, activity} = ActivityPub.unblock(blocker, blocked)
+
+      assert activity.data["type"] == "Undo"
+      assert activity.data["actor"] == blocker.ap_id
+
+      assert is_map(activity.data["object"])
+      assert activity.data["object"]["type"] == "Block"
+      assert activity.data["object"]["object"] == blocked.ap_id
+      assert activity.data["object"]["id"] == block_activity.data["id"]
    end
  end

--- a/test/web/activity_pub/transmogrifier_test.exs
+++ b/test/web/activity_pub/transmogrifier_test.exs
@ -2,13 +2,12 @@ defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
  use Pleroma.DataCase
  alias Pleroma.Web.ActivityPub.Transmogrifier
  alias Pleroma.Web.ActivityPub.Utils
+  alias Pleroma.Web.ActivityPub.ActivityPub
  alias Pleroma.Web.OStatus
  alias Pleroma.Activity
  alias Pleroma.User
  alias Pleroma.Repo
  alias Pleroma.Web.Websub.WebsubClientSubscription
-  alias Pleroma.Web.Websub.WebsubServerSubscription
-  import Ecto.Query

  import Pleroma.Factory
  alias Pleroma.Web.CommonAPI
@ -283,7 +282,7 @@ defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
        |> Map.put("object", object)
        |> Map.put("actor", activity.data["actor"])

-      {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+      {:ok, %Activity{local: false}} = Transmogrifier.handle_incoming(data)

      refute Repo.get(Activity, activity.id)
    end
@ -315,6 +314,234 @@ defmodule Pleroma.Web.ActivityPub.TransmogrifierTest do
      assert data["object"]["id"] ==
               "http://mastodon.example.org/users/admin/statuses/99542391527669785/activity"
    end
+
+    test "it works for incomming unfollows with an existing follow" do
+      user = insert(:user)
+
+      follow_data =
+        File.read!("test/fixtures/mastodon-follow-activity.json")
+        |> Poison.decode!()
+        |> Map.put("object", user.ap_id)
+
+      {:ok, %Activity{data: _, local: false}} = Transmogrifier.handle_incoming(follow_data)
+
+      data =
+        File.read!("test/fixtures/mastodon-unfollow-activity.json")
+        |> Poison.decode!()
+        |> Map.put("object", follow_data)
+
+      {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+
+      assert data["type"] == "Undo"
+      assert data["object"]["type"] == "Follow"
+      assert data["object"]["object"] == user.ap_id
+      assert data["actor"] == "http://mastodon.example.org/users/admin"
+
+      refute User.following?(User.get_by_ap_id(data["actor"]), user)
+    end
+
+    test "it works for incoming blocks" do
+      user = insert(:user)
+
+      data =
+        File.read!("test/fixtures/mastodon-block-activity.json")
+        |> Poison.decode!()
+        |> Map.put("object", user.ap_id)
+
+      {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+
+      assert data["type"] == "Block"
+      assert data["object"] == user.ap_id
+      assert data["actor"] == "http://mastodon.example.org/users/admin"
+
+      blocker = User.get_by_ap_id(data["actor"])
+
+      assert User.blocks?(blocker, user)
+    end
+
+    test "it works for incoming unblocks with an existing block" do
+      user = insert(:user)
+
+      block_data =
+        File.read!("test/fixtures/mastodon-block-activity.json")
+        |> Poison.decode!()
+        |> Map.put("object", user.ap_id)
+
+      {:ok, %Activity{data: _, local: false}} = Transmogrifier.handle_incoming(block_data)
+
+      data =
+        File.read!("test/fixtures/mastodon-unblock-activity.json")
+        |> Poison.decode!()
+        |> Map.put("object", block_data)
+
+      {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
+      assert data["type"] == "Undo"
+      assert data["object"]["type"] == "Block"
+      assert data["object"]["object"] == user.ap_id
+      assert data["actor"] == "http://mastodon.example.org/users/admin"
+
+      blocker = User.get_by_ap_id(data["actor"])
+
+      refute User.blocks?(blocker, user)
+    end
+
+    test "it works for incoming accepts which were pre-accepted" do
+      follower = insert(:user)
+      followed = insert(:user)
+
+      {:ok, follower} = User.follow(follower, followed)
+      assert User.following?(follower, followed) == true
+
+      {:ok, follow_activity} = ActivityPub.follow(follower, followed)
+
+      accept_data =
+        File.read!("test/fixtures/mastodon-accept-activity.json")
+        |> Poison.decode!()
+        |> Map.put("actor", followed.ap_id)
+
+      object =
+        accept_data["object"]
+        |> Map.put("actor", follower.ap_id)
+        |> Map.put("id", follow_activity.data["id"])
+
+      accept_data = Map.put(accept_data, "object", object)
+
+      {:ok, activity} = Transmogrifier.handle_incoming(accept_data)
+      refute activity.local
+
+      assert activity.data["object"] == follow_activity.data["id"]
+
+      follower = Repo.get(User, follower.id)
+
+      assert User.following?(follower, followed) == true
+    end
+
+    test "it works for incoming accepts which were orphaned" do
+      follower = insert(:user)
+      followed = insert(:user, %{info: %{"locked" => true}})
+
+      {:ok, follow_activity} = ActivityPub.follow(follower, followed)
+
+      accept_data =
+        File.read!("test/fixtures/mastodon-accept-activity.json")
+        |> Poison.decode!()
+        |> Map.put("actor", followed.ap_id)
+
+      accept_data =
+        Map.put(accept_data, "object", Map.put(accept_data["object"], "actor", follower.ap_id))
+
+      {:ok, activity} = Transmogrifier.handle_incoming(accept_data)
+      assert activity.data["object"] == follow_activity.data["id"]
+
+      follower = Repo.get(User, follower.id)
+
+      assert User.following?(follower, followed) == true
+    end
+
+    test "it works for incoming accepts which are referenced by IRI only" do
+      follower = insert(:user)
+      followed = insert(:user, %{info: %{"locked" => true}})
+
+      {:ok, follow_activity} = ActivityPub.follow(follower, followed)
+
+      accept_data =
+        File.read!("test/fixtures/mastodon-accept-activity.json")
+        |> Poison.decode!()
+        |> Map.put("actor", followed.ap_id)
+        |> Map.put("object", follow_activity.data["id"])
+
+      {:ok, activity} = Transmogrifier.handle_incoming(accept_data)
+      assert activity.data["object"] == follow_activity.data["id"]
+
+      follower = Repo.get(User, follower.id)
+
+      assert User.following?(follower, followed) == true
+    end
+
+    test "it fails for incoming accepts which cannot be correlated" do
+      follower = insert(:user)
+      followed = insert(:user, %{info: %{"locked" => true}})
+
+      accept_data =
+        File.read!("test/fixtures/mastodon-accept-activity.json")
+        |> Poison.decode!()
+        |> Map.put("actor", followed.ap_id)
+
+      accept_data =
+        Map.put(accept_data, "object", Map.put(accept_data["object"], "actor", follower.ap_id))
+
+      :error = Transmogrifier.handle_incoming(accept_data)
+
+      follower = Repo.get(User, follower.id)
+
+      refute User.following?(follower, followed) == true
+    end
+
+    test "it fails for incoming rejects which cannot be correlated" do
+      follower = insert(:user)
+      followed = insert(:user, %{info: %{"locked" => true}})
+
+      accept_data =
+        File.read!("test/fixtures/mastodon-reject-activity.json")
+        |> Poison.decode!()
+        |> Map.put("actor", followed.ap_id)
+
+      accept_data =
+        Map.put(accept_data, "object", Map.put(accept_data["object"], "actor", follower.ap_id))
+
+      :error = Transmogrifier.handle_incoming(accept_data)
+
+      follower = Repo.get(User, follower.id)
+
+      refute User.following?(follower, followed) == true
+    end
+
+    test "it works for incoming rejects which are orphaned" do
+      follower = insert(:user)
+      followed = insert(:user, %{info: %{"locked" => true}})
+
+      {:ok, follower} = User.follow(follower, followed)
+      {:ok, _follow_activity} = ActivityPub.follow(follower, followed)
+
+      assert User.following?(follower, followed) == true
+
+      reject_data =
+        File.read!("test/fixtures/mastodon-reject-activity.json")
+        |> Poison.decode!()
+        |> Map.put("actor", followed.ap_id)
+
+      reject_data =
+        Map.put(reject_data, "object", Map.put(reject_data["object"], "actor", follower.ap_id))
+
+      {:ok, activity} = Transmogrifier.handle_incoming(reject_data)
+      refute activity.local
+
+      follower = Repo.get(User, follower.id)
+
+      assert User.following?(follower, followed) == false
+    end
+
+    test "it works for incoming rejects which are referenced by IRI only" do
+      follower = insert(:user)
+      followed = insert(:user, %{info: %{"locked" => true}})
+
+      {:ok, follower} = User.follow(follower, followed)
+      {:ok, follow_activity} = ActivityPub.follow(follower, followed)
+
+      assert User.following?(follower, followed) == true
+
+      reject_data =
+        File.read!("test/fixtures/mastodon-reject-activity.json")
+        |> Poison.decode!()
+        |> Map.put("actor", followed.ap_id)
+        |> Map.put("object", follow_activity.data["id"])
+
+      {:ok, %Activity{data: _}} = Transmogrifier.handle_incoming(reject_data)
+
+      follower = Repo.get(User, follower.id)
+
+      assert User.following?(follower, followed) == false
+    end
  end

  describe "prepare outgoing" do
--- a/test/web/common_api/common_api_test.exs
+++ b/test/web/common_api/common_api_test.exs
@ -0,0 +1,13 @@
+defmodule Pleroma.Web.CommonAPI.Test do
+  use Pleroma.DataCase
+  alias Pleroma.Web.CommonAPI
+
+  import Pleroma.Factory
+
+  test "it de-duplicates tags" do
+    user = insert(:user)
+    {:ok, activity} = CommonAPI.post(user, %{"status" => "#2hu #2HU"})
+
+    assert activity.data["object"]["tag"] == ["2hu"]
+  end
+end
--- a/test/web/common_api/common_api_utils_test.exs
+++ b/test/web/common_api/common_api_utils_test.exs
@ -21,13 +21,12 @@ defmodule Pleroma.Web.CommonAPI.UtilsTest do
    test "incorrect password given" do
      {:ok, user} = UserBuilder.insert()

-      assert Utils.confirm_current_password(user, %{"password" => ""}) ==
-               {:error, "Invalid password."}
+      assert Utils.confirm_current_password(user, "") == {:error, "Invalid password."}
    end

    test "correct password given" do
      {:ok, user} = UserBuilder.insert()
-      assert Utils.confirm_current_password(user, %{"password" => "test"}) == {:ok, user}
+      assert Utils.confirm_current_password(user, "test") == {:ok, user}
    end
  end
 end
--- a/test/web/mastodon_api/list_view_test.exs
+++ b/test/web/mastodon_api/list_view_test.exs
@ -0,0 +1,19 @@
+defmodule Pleroma.Web.MastodonAPI.ListViewTest do
+  use Pleroma.DataCase
+  import Pleroma.Factory
+  alias Pleroma.Web.MastodonAPI.ListView
+  alias Pleroma.List
+
+  test "Represent a list" do
+    user = insert(:user)
+    title = "mortal enemies"
+    {:ok, list} = Pleroma.List.create(title, user)
+
+    expected = %{
+      id: to_string(list.id),
+      title: title
+    }
+
+    assert expected == ListView.render("list.json", %{list: list})
+  end
+end
--- a/test/web/mastodon_api/mastodon_api_controller_test.exs
+++ b/test/web/mastodon_api/mastodon_api_controller_test.exs
@ -229,6 +229,125 @@ defmodule Pleroma.Web.MastodonAPI.MastodonAPIControllerTest do
    end
  end

+  describe "lists" do
+    test "creating a list", %{conn: conn} do
+      user = insert(:user)
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> post("/api/v1/lists", %{"title" => "cuties"})
+
+      assert %{"title" => title} = json_response(conn, 200)
+      assert title == "cuties"
+    end
+
+    test "adding users to a list", %{conn: conn} do
+      user = insert(:user)
+      other_user = insert(:user)
+      {:ok, list} = Pleroma.List.create("name", user)
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> post("/api/v1/lists/#{list.id}/accounts", %{"account_ids" => [other_user.id]})
+
+      assert %{} == json_response(conn, 200)
+      %Pleroma.List{following: following} = Pleroma.List.get(list.id, user)
+      assert following == [other_user.follower_address]
+    end
+
+    test "removing users from a list", %{conn: conn} do
+      user = insert(:user)
+      other_user = insert(:user)
+      third_user = insert(:user)
+      {:ok, list} = Pleroma.List.create("name", user)
+      {:ok, list} = Pleroma.List.follow(list, other_user)
+      {:ok, list} = Pleroma.List.follow(list, third_user)
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> delete("/api/v1/lists/#{list.id}/accounts", %{"account_ids" => [other_user.id]})
+
+      assert %{} == json_response(conn, 200)
+      %Pleroma.List{following: following} = Pleroma.List.get(list.id, user)
+      assert following == [third_user.follower_address]
+    end
+
+    test "listing users in a list", %{conn: conn} do
+      user = insert(:user)
+      other_user = insert(:user)
+      {:ok, list} = Pleroma.List.create("name", user)
+      {:ok, list} = Pleroma.List.follow(list, other_user)
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> get("/api/v1/lists/#{list.id}/accounts", %{"account_ids" => [other_user.id]})
+
+      assert [%{"id" => id}] = json_response(conn, 200)
+      assert id == to_string(other_user.id)
+    end
+
+    test "retrieving a list", %{conn: conn} do
+      user = insert(:user)
+      {:ok, list} = Pleroma.List.create("name", user)
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> get("/api/v1/lists/#{list.id}")
+
+      assert %{"id" => id} = json_response(conn, 200)
+      assert id == to_string(list.id)
+    end
+
+    test "renaming a list", %{conn: conn} do
+      user = insert(:user)
+      {:ok, list} = Pleroma.List.create("name", user)
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> put("/api/v1/lists/#{list.id}", %{"title" => "newname"})
+
+      assert %{"title" => name} = json_response(conn, 200)
+      assert name == "newname"
+    end
+
+    test "deleting a list", %{conn: conn} do
+      user = insert(:user)
+      {:ok, list} = Pleroma.List.create("name", user)
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> delete("/api/v1/lists/#{list.id}")
+
+      assert %{} = json_response(conn, 200)
+      assert is_nil(Repo.get(Pleroma.List, list.id))
+    end
+
+    test "list timeline", %{conn: conn} do
+      user = insert(:user)
+      other_user = insert(:user)
+      {:ok, _activity_one} = TwitterAPI.create_status(user, %{"status" => "Marisa is cute."})
+      {:ok, activity_two} = TwitterAPI.create_status(other_user, %{"status" => "Marisa is cute."})
+      {:ok, list} = Pleroma.List.create("name", user)
+      {:ok, list} = Pleroma.List.follow(list, other_user)
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> get("/api/v1/timelines/list/#{list.id}")
+
+      assert [%{"id" => id}] = json_response(conn, 200)
+
+      assert id == to_string(activity_two.id)
+    end
+  end
+
  describe "notifications" do
    test "list of notifications", %{conn: conn} do
      user = insert(:user)
--- a/test/web/ostatus/ostatus_test.exs
+++ b/test/web/ostatus/ostatus_test.exs
@ -278,6 +278,30 @@ defmodule Pleroma.Web.OStatusTest do
    assert User.following?(follower, followed)
  end

+  test "handle incoming unfollows with existing follow" do
+    incoming_follow = File.read!("test/fixtures/follow.xml")
+    {:ok, [_activity]} = OStatus.handle_incoming(incoming_follow)
+
+    incoming = File.read!("test/fixtures/unfollow.xml")
+    {:ok, [activity]} = OStatus.handle_incoming(incoming)
+
+    assert activity.data["type"] == "Undo"
+
+    assert activity.data["id"] ==
+             "undo:tag:social.heldscal.la,2017-05-07:subscription:23211:person:44803:2017-05-07T09:54:48+00:00"
+
+    assert activity.data["actor"] == "https://social.heldscal.la/user/23211"
+    assert is_map(activity.data["object"])
+    assert activity.data["object"]["type"] == "Follow"
+    assert activity.data["object"]["object"] == "https://pawoo.net/users/pekorino"
+    refute activity.local
+
+    follower = User.get_by_ap_id(activity.data["actor"])
+    followed = User.get_by_ap_id(activity.data["object"]["object"])
+
+    refute User.following?(follower, followed)
+  end
+
  describe "new remote user creation" do
    test "returns local users" do
      local_user = insert(:user)
--- a/test/web/twitter_api/twitter_api_controller_test.exs
+++ b/test/web/twitter_api/twitter_api_controller_test.exs
@ -8,6 +8,7 @@ defmodule Pleroma.Web.TwitterAPI.ControllerTest do
  alias Pleroma.Web.TwitterAPI.NotificationView
  alias Pleroma.Web.CommonAPI
  alias Pleroma.Web.TwitterAPI.TwitterAPI
+  alias Comeonin.Pbkdf2

  import Pleroma.Factory

@ -443,7 +444,7 @@ defmodule Pleroma.Web.TwitterAPI.ControllerTest do
    test "with credentials", %{conn: conn, user: current_user} do
      blocked = insert(:user)

-      {:ok, current_user} = User.block(current_user, blocked)
+      {:ok, current_user, blocked} = TwitterAPI.block(current_user, %{"user_id" => blocked.id})
      assert User.blocks?(current_user, blocked)

      conn =
@ -801,6 +802,82 @@ defmodule Pleroma.Web.TwitterAPI.ControllerTest do
    assert user.bio == "Hello,<br>World! I<br> am a test."
  end

+  describe "POST /api/pleroma/change_password" do
+    setup [:valid_user]
+
+    test "without credentials", %{conn: conn} do
+      conn = post(conn, "/api/pleroma/change_password")
+      assert json_response(conn, 403) == %{"error" => "Invalid credentials."}
+    end
+
+    test "with credentials and invalid password", %{conn: conn, user: current_user} do
+      conn =
+        conn
+        |> with_credentials(current_user.nickname, "test")
+        |> post("/api/pleroma/change_password", %{
+          "password" => "hi",
+          "new_password" => "newpass",
+          "new_password_confirmation" => "newpass"
+        })
+
+      assert json_response(conn, 200) == %{"error" => "Invalid password."}
+    end
+
+    test "with credentials, valid password and new password and confirmation not matching", %{
+      conn: conn,
+      user: current_user
+    } do
+      conn =
+        conn
+        |> with_credentials(current_user.nickname, "test")
+        |> post("/api/pleroma/change_password", %{
+          "password" => "test",
+          "new_password" => "newpass",
+          "new_password_confirmation" => "notnewpass"
+        })
+
+      assert json_response(conn, 200) == %{
+               "error" => "New password does not match confirmation."
+             }
+    end
+
+    test "with credentials, valid password and invalid new password", %{
+      conn: conn,
+      user: current_user
+    } do
+      conn =
+        conn
+        |> with_credentials(current_user.nickname, "test")
+        |> post("/api/pleroma/change_password", %{
+          "password" => "test",
+          "new_password" => "",
+          "new_password_confirmation" => ""
+        })
+
+      assert json_response(conn, 200) == %{
+               "error" => "New password can't be blank."
+             }
+    end
+
+    test "with credentials, valid password and matching new password and confirmation", %{
+      conn: conn,
+      user: current_user
+    } do
+      conn =
+        conn
+        |> with_credentials(current_user.nickname, "test")
+        |> post("/api/pleroma/change_password", %{
+          "password" => "test",
+          "new_password" => "newpass",
+          "new_password_confirmation" => "newpass"
+        })
+
+      assert json_response(conn, 200) == %{"status" => "success"}
+      fetched_user = Repo.get(User, current_user.id)
+      assert Pbkdf2.checkpw("newpass", fetched_user.password_hash) == true
+    end
+  end
+
  describe "POST /api/pleroma/delete_account" do
    setup [:valid_user]

--- a/test/web/twitter_api/twitter_api_test.exs
+++ b/test/web/twitter_api/twitter_api_test.exs
@ -166,7 +166,7 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPITest do
  test "Unblock another user using user_id" do
    unblocked = insert(:user)
    user = insert(:user)
-    User.block(user, unblocked)
+    {:ok, user, _unblocked} = TwitterAPI.block(user, %{"user_id" => unblocked.id})

    {:ok, user, _unblocked} = TwitterAPI.unblock(user, %{"user_id" => unblocked.id})
    assert user.info["blocks"] == []
@ -175,7 +175,7 @@ defmodule Pleroma.Web.TwitterAPI.TwitterAPITest do
  test "Unblock another user using screen_name" do
    unblocked = insert(:user)
    user = insert(:user)
-    User.block(user, unblocked)
+    {:ok, user, _unblocked} = TwitterAPI.block(user, %{"screen_name" => unblocked.nickname})

    {:ok, user, _unblocked} = TwitterAPI.unblock(user, %{"screen_name" => unblocked.nickname})
    assert user.info["blocks"] == []
--- a/test/web/twitter_api/views/notification_view_test.exs
+++ b/test/web/twitter_api/views/notification_view_test.exs
@ -24,7 +24,7 @@ defmodule Pleroma.Web.TwitterAPI.NotificationViewTest do

    {:ok, follower} = User.follow(follower, user)
    {:ok, activity} = ActivityPub.follow(follower, user)
-    Cachex.set(:user_cache, "user_info:#{user.id}", User.user_info(Repo.get!(User, user.id)))
+    Cachex.put(:user_cache, "user_info:#{user.id}", User.user_info(Repo.get!(User, user.id)))
    [follow_notif] = Notification.for_user(user)

    represented = %{
--- a/test/web/twitter_api/views/user_view_test.exs
+++ b/test/web/twitter_api/views/user_view_test.exs
@ -31,7 +31,7 @@ defmodule Pleroma.Web.TwitterAPI.UserViewTest do
    User.follow(second_follower, user)
    User.follow(user, follower)
    {:ok, user} = User.update_follower_count(user)
-    Cachex.set(:user_cache, "user_info:#{user.id}", User.user_info(Repo.get!(User, user.id)))
+    Cachex.put(:user_cache, "user_info:#{user.id}", User.user_info(Repo.get!(User, user.id)))

    image = "http://localhost:4001/images/avi.png"
    banner = "http://localhost:4001/images/banner.png"