Merge develop

.gitlab-ci.yml

@@ -35,6 +35,7 @@ docs-build:
   - develop@pleroma/pleroma
   variables:
     MIX_ENV: dev
+    PLEROMA_BUILD_ENV: prod
   script:
     - mix deps.get
     - mix compile

CHANGELOG.md

@@ -6,14 +6,27 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ## [Unreleased]
 ### Added
 - MRF: Support for priming the mediaproxy cache (`Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy`)
+Configuration: `federation_incoming_replies_max_depth` option
 - Mastodon API: Support for the [`tagged` filter](https://github.com/tootsuite/mastodon/pull/9755) in [`GET /api/v1/accounts/:id/statuses`](https://docs.joinmastodon.org/api/rest/accounts/#get-api-v1-accounts-id-statuses)
+- Mastodon API, streaming: Add support for passing the token in the `Sec-WebSocket-Protocol` header
+- Admin API: Return users' tags when querying reports
+- Admin API: Return avatar and display name when querying users
+- Admin API: Allow querying user by ID
+- Added synchronization of following/followers counters for external users
 
 ### Fixed
 - Not being able to pin unlisted posts
+- Metadata rendering errors resulting in the entire page being inaccessible
+- Mastodon API: Handling of search timeouts (`/api/v1/search` and `/api/v2/search`)
+- Mastodon API: Embedded relationships not being properly rendered in the Account entity of Status entity
 
 ### Changed
+- Configuration: OpenGraph and TwitterCard providers enabled by default
 - Configuration: Filter.AnonymizeFilename added ability to retain file extension with custom text
 
+### Changed
+- NodeInfo: Return `skipThreadContainment` in `metadata` for the `skip_thread_containment` option
+
 ## [1.0.0] - 2019-06-29
 ### Security
 - Mastodon API: Fix display names not being sanitized
@@ -75,6 +88,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - OAuth: added job to clean expired access tokens
 - MRF: Support for rejecting reports from specific instances (`mrf_simple`)
 - MRF: Support for stripping avatars and banner images from specific instances (`mrf_simple`)
+- Ability to reset avatar, profile banner and backgroud
 - MRF: Support for running subchains.
 - Configuration: `skip_thread_containment` option
 - Configuration: `rate_limit` option. See `Pleroma.Plugs.RateLimiter` documentation for details.

config/config.exs

@@ -218,6 +218,7 @@
   },
   registrations_open: true,
   federating: true,
+  federation_incoming_replies_max_depth: 100,
   federation_reachability_timeout_days: 7,
   federation_publisher_modules: [
     Pleroma.Web.ActivityPub.Publisher,
@@ -248,7 +249,14 @@
   remote_post_retention_days: 90,
   skip_thread_containment: true,
   limit_to_local_content: :unauthenticated,
-  dynamic_configuration: false
+  dynamic_configuration: false,
+  external_user_synchronization: [
+    enabled: false,
+    # every 2 hours
+    interval: 60 * 60 * 2,
+    max_retries: 3,
+    limit: 500
+  ]
 
 config :pleroma, :markup,
   # XXX - unfortunately, inline images must be enabled by default right now, because
@@ -358,7 +366,11 @@
   port: 9999
 
 config :pleroma, Pleroma.Web.Metadata,
-  providers: [Pleroma.Web.Metadata.Providers.RelMe],
+  providers: [
+    Pleroma.Web.Metadata.Providers.OpenGraph,
+    Pleroma.Web.Metadata.Providers.TwitterCard,
+    Pleroma.Web.Metadata.Providers.RelMe
+  ],
   unfurl_nsfw: false
 
 config :pleroma, :suggestions,

config/test.exs

@@ -28,7 +28,8 @@
 config :pleroma, :instance,
   email: "admin@example.com",
   notify_email: "noreply@example.com",
-  skip_thread_containment: false
+  skip_thread_containment: false,
+  federating: false
 
 # Configure your database
 config :pleroma, Pleroma.Repo,
@@ -76,6 +77,8 @@
 
 config :joken, default_signer: "yU8uHKq+yyAkZ11Hx//jcdacWc8yQ1bxAAGrplzB0Zwwjkp35v0RK9SO8WTPr6QZ"
 
+config :pleroma, Pleroma.ReverseProxy.Client, Pleroma.ReverseProxy.ClientMock
+
 try do
   import_config "test.secret.exs"
 rescue

docs/api/admin_api.md

@@ -38,7 +38,9 @@ Authentication is required and the user must be an admin.
         "moderator": bool
       },
       "local": bool,
-      "tags": array
+      "tags": array,
+      "avatar": string,
+      "display_name": string
     },
     ...
   ]
@@ -174,13 +176,13 @@ Note: Available `:permission_group` is currently moderator and admin. 404 is ret
   - `nickname`
   - `status` BOOLEAN field, false value means deactivation.
 
-## `/api/pleroma/admin/users/:nickname`
+## `/api/pleroma/admin/users/:nickname_or_id`
 
 ### Retrive the details of a user
 
 - Method: `GET`
 - Params:
-  - `nickname`
+  - `nickname` or `id`
 - Response:
   - On failure: `Not found`
   - On success: JSON of the user
@@ -331,6 +333,7 @@ Note: Available `:permission_group` is currently moderator and admin. 404 is ret
           "pleroma": {},
           "sensitive": false
         },
+        "tags": ["force_unlisted"],
         "statuses_count": 3,
         "url": "https://pleroma.example.org/users/user",
         "username": "user"
@@ -366,6 +369,7 @@ Note: Available `:permission_group` is currently moderator and admin. 404 is ret
           "pleroma": {},
           "sensitive": false
         },
+        "tags": ["force_unlisted"],
         "statuses_count": 1,
         "url": "https://pleroma.example.org/users/lain",
         "username": "lain"

docs/config.md

@@ -87,6 +87,7 @@ config :pleroma, Pleroma.Emails.Mailer,
 * `invites_enabled`: Enable user invitations for admins (depends on `registrations_open: false`).
 * `account_activation_required`: Require users to confirm their emails before signing in.
 * `federating`: Enable federation with other instances
+* `federation_incoming_replies_max_depth`: Max. depth of reply-to activities fetching on incoming federation, to prevent out-of-memory situations while fetching very long threads. If set to `nil`, threads of any depth will be fetched. Lower this value if you experience out-of-memory crashes.
 * `federation_reachability_timeout_days`: Timeout (in days) of each external federation target being unreachable prior to pausing federating to it.
 * `allow_relay`: Enable Pleroma’s Relay, which makes it possible to follow a whole instance
 * `rewrite_policy`: Message Rewrite Policy, either one or a list. Here are the ones available by default:
@@ -124,6 +125,12 @@ config :pleroma, Pleroma.Emails.Mailer,
 * `skip_thread_containment`: Skip filter out broken threads. The default is `false`.
 * `limit_to_local_content`: Limit unauthenticated users to search for local statutes and users only. Possible values: `:unauthenticated`, `:all` and `false`. The default is `:unauthenticated`.
 * `dynamic_configuration`: Allow transferring configuration to DB with the subsequent customization from Admin api.
+* `external_user_synchronization`: Following/followers counters synchronization settings.
+  * `enabled`: Enables synchronization
+  * `interval`: Interval between synchronization.
+  * `max_retries`: Max rettries for host. After exceeding the limit, the check will not be carried out for users from this host.
+  * `limit`: Users batch size for processing in one time.
+
 
 
 ## :logger

docs/installation/otp_en.md

@@ -207,7 +207,7 @@ certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --
 
 # Add it to the daily cron
 echo '#!/bin/sh
-certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --dry-run --post-hook "systemctl reload nginx"
+certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --post-hook "systemctl reload nginx"
 ' > /etc/cron.daily/renew-pleroma-cert
 chmod +x /etc/cron.daily/renew-pleroma-cert
 
@@ -228,7 +228,7 @@ certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --
 
 # Add it to the daily cron
 echo '#!/bin/sh
-certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --dry-run --post-hook "rc-service nginx reload"
+certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --post-hook "rc-service nginx reload"
 ' > /etc/periodic/daily/renew-pleroma-cert
 chmod +x /etc/periodic/daily/renew-pleroma-cert
 

lib/mix/tasks/pleroma/ecto/ecto.ex

@@ -1,6 +1,7 @@
 # Pleroma: A lightweight social networking server
 # Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-onl
+
 defmodule Mix.Tasks.Pleroma.Ecto do
   @doc """
   Ensures the given repository's migrations path exists on the file system.

lib/mix/tasks/pleroma/instance.ex

@@ -149,7 +149,7 @@ def run(["gen" | rest]) do
       uploads_dir =
         get_option(
           options,
-          :upload_dir,
+          :uploads_dir,
           "What directory should media uploads go in (when using the local uploader)?",
           Pleroma.Config.get([Pleroma.Uploaders.Local, :uploads])
         )

lib/pleroma/application.ex

@@ -155,7 +155,11 @@ def start(_type, _args) do
             start: {Pleroma.Web.Endpoint, :start_link, []},
             type: :supervisor
           },
-          %{id: Pleroma.Gopher.Server, start: {Pleroma.Gopher.Server, :start_link, []}}
+          %{id: Pleroma.Gopher.Server, start: {Pleroma.Gopher.Server, :start_link, []}},
+          %{
+            id: Pleroma.User.SynchronizationWorker,
+            start: {Pleroma.User.SynchronizationWorker, :start_link, []}
+          }
         ]
 
     # See http://elixir-lang.org/docs/stable/elixir/Supervisor.html

lib/pleroma/object.ex

@@ -44,20 +44,20 @@ def get_by_ap_id(ap_id) do
     Repo.one(from(object in Object, where: fragment("(?)->>'id' = ?", object.data, ^ap_id)))
   end
 
-  def normalize(_, fetch_remote \\ true)
+  def normalize(_, fetch_remote \\ true, options \\ [])
   # If we pass an Activity to Object.normalize(), we can try to use the preloaded object.
   # Use this whenever possible, especially when walking graphs in an O(N) loop!
-  def normalize(%Object{} = object, _), do: object
-  def normalize(%Activity{object: %Object{} = object}, _), do: object
+  def normalize(%Object{} = object, _, _), do: object
+  def normalize(%Activity{object: %Object{} = object}, _, _), do: object
 
   # A hack for fake activities
-  def normalize(%Activity{data: %{"object" => %{"fake" => true} = data}}, _) do
+  def normalize(%Activity{data: %{"object" => %{"fake" => true} = data}}, _, _) do
     %Object{id: "pleroma:fake_object_id", data: data}
   end
 
   # Catch and log Object.normalize() calls where the Activity's child object is not
   # preloaded.
-  def normalize(%Activity{data: %{"object" => %{"id" => ap_id}}}, fetch_remote) do
+  def normalize(%Activity{data: %{"object" => %{"id" => ap_id}}}, fetch_remote, _) do
     Logger.debug(
       "Object.normalize() called without preloaded object (#{ap_id}).  Consider preloading the object!"
     )
@@ -67,7 +67,7 @@ def normalize(%Activity{data: %{"object" => %{"id" => ap_id}}}, fetch_remote) do
     normalize(ap_id, fetch_remote)
   end
 
-  def normalize(%Activity{data: %{"object" => ap_id}}, fetch_remote) do
+  def normalize(%Activity{data: %{"object" => ap_id}}, fetch_remote, _) do
     Logger.debug(
       "Object.normalize() called without preloaded object (#{ap_id}).  Consider preloading the object!"
     )
@@ -78,10 +78,14 @@ def normalize(%Activity{data: %{"object" => ap_id}}, fetch_remote) do
   end
 
   # Old way, try fetching the object through cache.
-  def normalize(%{"id" => ap_id}, fetch_remote), do: normalize(ap_id, fetch_remote)
-  def normalize(ap_id, false) when is_binary(ap_id), do: get_cached_by_ap_id(ap_id)
-  def normalize(ap_id, true) when is_binary(ap_id), do: Fetcher.fetch_object_from_id!(ap_id)
-  def normalize(_, _), do: nil
+  def normalize(%{"id" => ap_id}, fetch_remote, _), do: normalize(ap_id, fetch_remote)
+  def normalize(ap_id, false, _) when is_binary(ap_id), do: get_cached_by_ap_id(ap_id)
+
+  def normalize(ap_id, true, options) when is_binary(ap_id) do
+    Fetcher.fetch_object_from_id!(ap_id, options)
+  end
+
+  def normalize(_, _, _), do: nil
 
   # Owned objects can only be mutated by their owner
   def authorize_mutation(%Object{data: %{"actor" => actor}}, %User{ap_id: ap_id}),

lib/pleroma/object/fetcher.ex

@@ -22,7 +22,7 @@ defp reinject_object(data) do
 
   # TODO:
   # This will create a Create activity, which we need internally at the moment.
-  def fetch_object_from_id(id) do
+  def fetch_object_from_id(id, options \\ []) do
     if object = Object.get_cached_by_ap_id(id) do
       {:ok, object}
     else
@@ -38,7 +38,7 @@ def fetch_object_from_id(id) do
              "object" => data
            },
            :ok <- Containment.contain_origin(id, params),
-           {:ok, activity} <- Transmogrifier.handle_incoming(params),
+           {:ok, activity} <- Transmogrifier.handle_incoming(params, options),
            {:object, _data, %Object{} = object} <-
              {:object, data, Object.normalize(activity, false)} do
         {:ok, object}
@@ -63,8 +63,8 @@ def fetch_object_from_id(id) do
     end
   end
 
-  def fetch_object_from_id!(id) do
-    with {:ok, object} <- fetch_object_from_id(id) do
+  def fetch_object_from_id!(id, options \\ []) do
+    with {:ok, object} <- fetch_object_from_id(id, options) do
       object
     else
       _e ->

lib/pleroma/reverse_proxy/client.ex

@@ -0,0 +1,24 @@
+defmodule Pleroma.ReverseProxy.Client do
+  @callback request(atom(), String.t(), [tuple()], String.t(), list()) ::
+              {:ok, pos_integer(), [tuple()], reference() | map()}
+              | {:ok, pos_integer(), [tuple()]}
+              | {:ok, reference()}
+              | {:error, term()}
+
+  @callback stream_body(reference() | pid() | map()) ::
+              {:ok, binary()} | :done | {:error, String.t()}
+
+  @callback close(reference() | pid() | map()) :: :ok
+
+  def request(method, url, headers, "", opts \\ []) do
+    client().request(method, url, headers, "", opts)
+  end
+
+  def stream_body(ref), do: client().stream_body(ref)
+
+  def close(ref), do: client().close(ref)
+
+  defp client do
+    Pleroma.Config.get([Pleroma.ReverseProxy.Client], :hackney)
+  end
+end

lib/pleroma/reverse_proxy/reverse_proxy.ex

@@ -146,7 +146,7 @@ defp request(method, url, headers, hackney_opts) do
     Logger.debug("#{__MODULE__} #{method} #{url} #{inspect(headers)}")
     method = method |> String.downcase() |> String.to_existing_atom()
 
-    case hackney().request(method, url, headers, "", hackney_opts) do
+    case client().request(method, url, headers, "", hackney_opts) do
       {:ok, code, headers, client} when code in @valid_resp_codes ->
         {:ok, code, downcase_headers(headers), client}
 
@@ -173,7 +173,7 @@ defp response(conn, client, url, status, headers, opts) do
         halt(conn)
 
       {:error, :closed, conn} ->
-        :hackney.close(client)
+        client().close(client)
         halt(conn)
 
       {:error, error, conn} ->
@@ -181,7 +181,7 @@ defp response(conn, client, url, status, headers, opts) do
           "#{__MODULE__} request to #{url} failed while reading/chunking: #{inspect(error)}"
         )
 
-        :hackney.close(client)
+        client().close(client)
         halt(conn)
     end
   end
@@ -196,7 +196,7 @@ defp chunk_reply(conn, client, opts, sent_so_far, duration) do
              duration,
              Keyword.get(opts, :max_read_duration, @max_read_duration)
            ),
-         {:ok, data} <- hackney().stream_body(client),
+         {:ok, data} <- client().stream_body(client),
          {:ok, duration} <- increase_read_duration(duration),
          sent_so_far = sent_so_far + byte_size(data),
          :ok <- body_size_constraint(sent_so_far, Keyword.get(opts, :max_body_size)),
@@ -378,5 +378,5 @@ defp increase_read_duration(_) do
     {:ok, :no_duration_limit, :no_duration_limit}
   end
 
-  defp hackney, do: Pleroma.Config.get(:hackney, :hackney)
+  defp client, do: Pleroma.ReverseProxy.Client
 end

lib/pleroma/uploaders/swift/keystone.ex

@@ -1,51 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Uploaders.Swift.Keystone do
-  use HTTPoison.Base
-
-  def process_url(url) do
-    Enum.join(
-      [Pleroma.Config.get!([Pleroma.Uploaders.Swift, :auth_url]), url],
-      "/"
-    )
-  end
-
-  def process_response_body(body) do
-    body
-    |> Jason.decode!()
-  end
-
-  def get_token do
-    settings = Pleroma.Config.get(Pleroma.Uploaders.Swift)
-    username = Keyword.fetch!(settings, :username)
-    password = Keyword.fetch!(settings, :password)
-    tenant_id = Keyword.fetch!(settings, :tenant_id)
-
-    case post(
-           "/tokens",
-           make_auth_body(username, password, tenant_id),
-           ["Content-Type": "application/json"],
-           hackney: [:insecure]
-         ) do
-      {:ok, %Tesla.Env{status: 200, body: body}} ->
-        body["access"]["token"]["id"]
-
-      {:ok, %Tesla.Env{status: _}} ->
-        ""
-    end
-  end
-
-  def make_auth_body(username, password, tenant) do
-    Jason.encode!(%{
-      :auth => %{
-        :passwordCredentials => %{
-          :username => username,
-          :password => password
-        },
-        :tenantId => tenant
-      }
-    })
-  end
-end

lib/pleroma/uploaders/swift/swift.ex

@@ -1,29 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Uploaders.Swift.Client do
-  use HTTPoison.Base
-
-  def process_url(url) do
-    Enum.join(
-      [Pleroma.Config.get!([Pleroma.Uploaders.Swift, :storage_url]), url],
-      "/"
-    )
-  end
-
-  def upload_file(filename, body, content_type) do
-    token = Pleroma.Uploaders.Swift.Keystone.get_token()
-
-    case put("#{filename}", body, "X-Auth-Token": token, "Content-Type": content_type) do
-      {:ok, %Tesla.Env{status: 201}} ->
-        {:ok, {:file, filename}}
-
-      {:ok, %Tesla.Env{status: 401}} ->
-        {:error, "Unauthorized, Bad Token"}
-
-      {:error, _} ->
-        {:error, "Swift Upload Error"}
-    end
-  end
-end

lib/pleroma/uploaders/swift/uploader.ex

@@ -1,19 +0,0 @@
-# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
-# SPDX-License-Identifier: AGPL-3.0-only
-
-defmodule Pleroma.Uploaders.Swift do
-  @behaviour Pleroma.Uploaders.Uploader
-
-  def get_file(name) do
-    {:ok, {:url, Path.join([Pleroma.Config.get!([__MODULE__, :object_url]), name])}}
-  end
-
-  def put_file(upload) do
-    Pleroma.Uploaders.Swift.Client.upload_file(
-      upload.path,
-      File.read!(upload.tmpfile),
-      upload.content_type
-    )
-  end
-end

lib/pleroma/user.ex

@@ -108,15 +108,25 @@ def ap_id(%User{nickname: nickname}) do
   def ap_followers(%User{follower_address: fa}) when is_binary(fa), do: fa
   def ap_followers(%User{} = user), do: "#{ap_id(user)}/followers"
 
-  def user_info(%User{} = user) do
+  def user_info(%User{} = user, args \\ %{}) do
+    following_count =
+      if args[:following_count], do: args[:following_count], else: following_count(user)
+
+    follower_count =
+      if args[:follower_count], do: args[:follower_count], else: user.info.follower_count
+
     %{
-      following_count: following_count(user),
       note_count: user.info.note_count,
-      follower_count: user.info.follower_count,
       locked: user.info.locked,
       confirmation_pending: user.info.confirmation_pending,
       default_scope: user.info.default_scope
     }
+    |> Map.put(:following_count, following_count)
+    |> Map.put(:follower_count, follower_count)
+  end
+
+  def set_info_cache(user, args) do
+    Cachex.put(:user_cache, "user_info:#{user.id}", user_info(user, args))
   end
 
   def restrict_deactivated(query) do
@@ -837,15 +847,12 @@ def unblock(blocker, %{ap_id: ap_id}) do
   def mutes?(nil, _), do: false
   def mutes?(user, %{ap_id: ap_id}), do: Enum.member?(user.info.mutes, ap_id)
 
-  def blocks?(user, %{ap_id: ap_id}) do
-    blocks = user.info.blocks
-    domain_blocks = user.info.domain_blocks
+  def blocks?(%User{info: info} = _user, %{ap_id: ap_id}) do
+    blocks = info.blocks
+    domain_blocks = info.domain_blocks
     %{host: host} = URI.parse(ap_id)
 
-    Enum.member?(blocks, ap_id) ||
-      Enum.any?(domain_blocks, fn domain ->
-        host == domain
-      end)
+    Enum.member?(blocks, ap_id) || Enum.any?(domain_blocks, &(&1 == host))
   end
 
   def subscribed_to?(user, %{ap_id: ap_id}) do
@@ -1004,6 +1011,56 @@ def perform(:follow_import, %User{} = follower, followed_identifiers)
     )
   end
 
+  @spec sync_follow_counter() :: :ok
+  def sync_follow_counter,
+    do: PleromaJobQueue.enqueue(:background, __MODULE__, [:sync_follow_counters])
+
+  @spec perform(:sync_follow_counters) :: :ok
+  def perform(:sync_follow_counters) do
+    {:ok, _pid} = Agent.start_link(fn -> %{} end, name: :domain_errors)
+    config = Pleroma.Config.get([:instance, :external_user_synchronization])
+
+    :ok = sync_follow_counters(config)
+    Agent.stop(:domain_errors)
+  end
+
+  @spec sync_follow_counters(keyword()) :: :ok
+  def sync_follow_counters(opts \\ []) do
+    users = external_users(opts)
+
+    if length(users) > 0 do
+      errors = Agent.get(:domain_errors, fn state -> state end)
+      {last, updated_errors} = User.Synchronization.call(users, errors, opts)
+      Agent.update(:domain_errors, fn _state -> updated_errors end)
+      sync_follow_counters(max_id: last.id, limit: opts[:limit])
+    else
+      :ok
+    end
+  end
+
+  @spec external_users(keyword()) :: [User.t()]
+  def external_users(opts \\ []) do
+    query =
+      User.Query.build(%{
+        external: true,
+        active: true,
+        order_by: :id,
+        select: [:id, :ap_id, :info]
+      })
+
+    query =
+      if opts[:max_id],
+        do: where(query, [u], u.id > ^opts[:max_id]),
+        else: query
+
+    query =
+      if opts[:limit],
+        do: limit(query, ^opts[:limit]),
+        else: query
+
+    Repo.all(query)
+  end
+
   def blocks_import(%User{} = blocker, blocked_identifiers) when is_list(blocked_identifiers),
     do:
       PleromaJobQueue.enqueue(:background, __MODULE__, [

lib/pleroma/user/query.ex

@@ -7,7 +7,7 @@ defmodule Pleroma.User.Query do
   User query builder module. Builds query from new query or another user query.
 
     ## Example:
-        query = Pleroma.User.Query(%{nickname: "nickname"})
+        query = Pleroma.User.Query.build(%{nickname: "nickname"})
         another_query = Pleroma.User.Query.build(query, %{email: "email@example.com"})
         Pleroma.Repo.all(query)
         Pleroma.Repo.all(another_query)
@@ -47,7 +47,10 @@ defmodule Pleroma.User.Query do
             friends: User.t(),
             recipients_from_activity: [String.t()],
             nickname: [String.t()],
-            ap_id: [String.t()]
+            ap_id: [String.t()],
+            order_by: term(),
+            select: term(),
+            limit: pos_integer()
           }
           | %{}
 
@@ -141,6 +144,18 @@ defp compose_query({:recipients_from_activity, to}, query) do
     where(query, [u], u.ap_id in ^to or fragment("? && ?", u.following, ^to))
   end
 
+  defp compose_query({:order_by, key}, query) do
+    order_by(query, [u], field(u, ^key))
+  end
+
+  defp compose_query({:select, keys}, query) do
+    select(query, [u], ^keys)
+  end
+
+  defp compose_query({:limit, limit}, query) do
+    limit(query, ^limit)
+  end
+
   defp compose_query(_unsupported_param, query), do: query
 
   defp prepare_tag_criteria(tag, query) do

lib/pleroma/user/search.ex

@@ -43,6 +43,8 @@ def search(query_string, opts \\ []) do
   defp search_query(query_string, for_user, following) do
     for_user
     |> base_query(following)
+    |> filter_blocked_user(for_user)
+    |> filter_blocked_domains(for_user)
     |> search_subqueries(query_string)
     |> union_subqueries
     |> distinct_query()
@@ -55,6 +57,25 @@ defp search_query(query_string, for_user, following) do
   defp base_query(_user, false), do: User
   defp base_query(user, true), do: User.get_followers_query(user)
 
+  defp filter_blocked_user(query, %User{info: %{blocks: blocks}})
+       when length(blocks) > 0 do
+    from(q in query, where: not (q.ap_id in ^blocks))
+  end
+
+  defp filter_blocked_user(query, _), do: query
+
+  defp filter_blocked_domains(query, %User{info: %{domain_blocks: domain_blocks}})
+       when length(domain_blocks) > 0 do
+    domains = Enum.join(domain_blocks, ",")
+
+    from(
+      q in query,
+      where: fragment("substring(ap_id from '.*://([^/]*)') NOT IN (?)", ^domains)
+    )
+  end
+
+  defp filter_blocked_domains(query, _), do: query
+
   defp paginate(query, limit, offset) do
     from(q in query, limit: ^limit, offset: ^offset)
   end
@@ -129,7 +150,7 @@ defp boost_search_rank_query(query, for_user) do
   @spec fts_search_subquery(User.t() | Ecto.Query.t(), String.t()) :: Ecto.Query.t()
   defp fts_search_subquery(query, term) do
     processed_query =
-      term
+      String.trim_trailing(term, "@" <> local_domain())
       |> String.replace(~r/\W+/, " ")
       |> String.trim()
       |> String.split()
@@ -171,6 +192,8 @@ defp fts_search_subquery(query, term) do
 
   @spec trigram_search_subquery(User.t() | Ecto.Query.t(), String.t()) :: Ecto.Query.t()
   defp trigram_search_subquery(query, term) do
+    term = String.trim_trailing(term, "@" <> local_domain())
+
     from(
       u in query,
       select_merge: %{
@@ -188,4 +211,6 @@ defp trigram_search_subquery(query, term) do
     )
     |> User.restrict_deactivated()
   end
+
+  defp local_domain, do: Pleroma.Config.get([Pleroma.Web.Endpoint, :url, :host])
 end

lib/pleroma/user/synchronization.ex

@@ -0,0 +1,60 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.User.Synchronization do
+  alias Pleroma.HTTP
+  alias Pleroma.User
+
+  @spec call([User.t()], map(), keyword()) :: {User.t(), map()}
+  def call(users, errors, opts \\ []) do
+    do_call(users, errors, opts)
+  end
+
+  defp do_call([user | []], errors, opts) do
+    updated = fetch_counters(user, errors, opts)
+    {user, updated}
+  end
+
+  defp do_call([user | others], errors, opts) do
+    updated = fetch_counters(user, errors, opts)
+    do_call(others, updated, opts)
+  end
+
+  defp fetch_counters(user, errors, opts) do
+    %{host: host} = URI.parse(user.ap_id)
+
+    info = %{}
+    {following, errors} = fetch_counter(user.ap_id <> "/following", host, errors, opts)
+    info = if following, do: Map.put(info, :following_count, following), else: info
+
+    {followers, errors} = fetch_counter(user.ap_id <> "/followers", host, errors, opts)
+    info = if followers, do: Map.put(info, :follower_count, followers), else: info
+
+    User.set_info_cache(user, info)
+    errors
+  end
+
+  defp available_domain?(domain, errors, opts) do
+    max_retries = Keyword.get(opts, :max_retries, 3)
+    not (Map.has_key?(errors, domain) && errors[domain] >= max_retries)
+  end
+
+  defp fetch_counter(url, host, errors, opts) do
+    with true <- available_domain?(host, errors, opts),
+         {:ok, %{body: body, status: code}} when code in 200..299 <-
+           HTTP.get(
+             url,
+             [{:Accept, "application/activity+json"}]
+           ),
+         {:ok, data} <- Jason.decode(body) do
+      {data["totalItems"], errors}
+    else
+      false ->
+        {nil, errors}
+
+      _ ->
+        {nil, Map.update(errors, host, 1, &(&1 + 1))}
+    end
+  end
+end

lib/pleroma/user/synchronization_worker.ex

@@ -0,0 +1,32 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-onl
+
+defmodule Pleroma.User.SynchronizationWorker do
+  use GenServer
+
+  def start_link do
+    config = Pleroma.Config.get([:instance, :external_user_synchronization])
+
+    if config[:enabled] do
+      GenServer.start_link(__MODULE__, interval: config[:interval])
+    else
+      :ignore
+    end
+  end
+
+  def init(opts) do
+    schedule_next(opts)
+    {:ok, opts}
+  end
+
+  def handle_info(:sync_follow_counters, opts) do
+    Pleroma.User.sync_follow_counter()
+    schedule_next(opts)
+    {:noreply, opts}
+  end
+
+  defp schedule_next(opts) do
+    Process.send_after(self(), :sync_follow_counters, opts[:interval])
+  end
+end

lib/pleroma/web/activity_pub/transmogrifier.ex

@@ -14,6 +14,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.ActivityPub.Utils
   alias Pleroma.Web.ActivityPub.Visibility
+  alias Pleroma.Web.Federator
 
   import Ecto.Query
 
@@ -22,20 +23,20 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   @doc """
   Modifies an incoming AP object (mastodon format) to our internal format.
   """
-  def fix_object(object) do
+  def fix_object(object, options \\ []) do
     object
     |> fix_actor
     |> fix_url
     |> fix_attachments
     |> fix_context
-    |> fix_in_reply_to
+    |> fix_in_reply_to(options)
     |> fix_emoji
     |> fix_tag
     |> fix_content_map
     |> fix_likes
     |> fix_addressing
     |> fix_summary
-    |> fix_type
+    |> fix_type(options)
   end
 
   def fix_summary(%{"summary" => nil} = object) do
@@ -164,7 +165,9 @@ def fix_likes(object) do
     object
   end
 
-  def fix_in_reply_to(%{"inReplyTo" => in_reply_to} = object)
+  def fix_in_reply_to(object, options \\ [])
+
+  def fix_in_reply_to(%{"inReplyTo" => in_reply_to} = object, options)
       when not is_nil(in_reply_to) do
     in_reply_to_id =
       cond do
@@ -182,28 +185,34 @@ def fix_in_reply_to(%{"inReplyTo" => in_reply_to} = object)
           ""
       end
 
-    case get_obj_helper(in_reply_to_id) do
-      {:ok, replied_object} ->
-        with %Activity{} = _activity <-
-               Activity.get_create_by_object_ap_id(replied_object.data["id"]) do
-          object
-          |> Map.put("inReplyTo", replied_object.data["id"])
-          |> Map.put("inReplyToAtomUri", object["inReplyToAtomUri"] || in_reply_to_id)
-          |> Map.put("conversation", replied_object.data["context"] || object["conversation"])
-          |> Map.put("context", replied_object.data["context"] || object["conversation"])
-        else
-          e ->
-            Logger.error("Couldn't fetch \"#{inspect(in_reply_to_id)}\", error: #{inspect(e)}")
-            object
-        end
+    object = Map.put(object, "inReplyToAtomUri", in_reply_to_id)
 
-      e ->
-        Logger.error("Couldn't fetch \"#{inspect(in_reply_to_id)}\", error: #{inspect(e)}")
-        object
+    if Federator.allowed_incoming_reply_depth?(options[:depth]) do
+      case get_obj_helper(in_reply_to_id, options) do
+        {:ok, replied_object} ->
+          with %Activity{} = _activity <-
+                 Activity.get_create_by_object_ap_id(replied_object.data["id"]) do
+            object
+            |> Map.put("inReplyTo", replied_object.data["id"])
+            |> Map.put("inReplyToAtomUri", object["inReplyToAtomUri"] || in_reply_to_id)
+            |> Map.put("conversation", replied_object.data["context"] || object["conversation"])
+            |> Map.put("context", replied_object.data["context"] || object["conversation"])
+          else
+            e ->
+              Logger.error("Couldn't fetch \"#{inspect(in_reply_to_id)}\", error: #{inspect(e)}")
+              object
+          end
+
+        e ->
+          Logger.error("Couldn't fetch \"#{inspect(in_reply_to_id)}\", error: #{inspect(e)}")
+          object
+      end
+    else
+      object
     end
   end
 
-  def fix_in_reply_to(object), do: object
+  def fix_in_reply_to(object, _options), do: object
 
   def fix_context(object) do
     context = object["context"] || object["conversation"] || Utils.generate_context_id()
@@ -336,8 +345,13 @@ def fix_content_map(%{"contentMap" => content_map} = object) do
 
   def fix_content_map(object), do: object
 
-  def fix_type(%{"inReplyTo" => reply_id} = object) when is_binary(reply_id) do
-    reply = Object.normalize(reply_id)
+  def fix_type(object, options \\ [])
+
+  def fix_type(%{"inReplyTo" => reply_id} = object, options) when is_binary(reply_id) do
+    reply =
+      if Federator.allowed_incoming_reply_depth?(options[:depth]) do
+        Object.normalize(reply_id, true)
+      end
 
     if reply && (reply.data["type"] == "Question" and object["name"]) do
       Map.put(object, "type", "Answer")
@@ -346,7 +360,7 @@ def fix_type(%{"inReplyTo" => reply_id} = object) when is_binary(reply_id) do
     end
   end
 
-  def fix_type(object), do: object
+  def fix_type(object, _), do: object
 
   defp mastodon_follow_hack(%{"id" => id, "actor" => follower_id}, followed) do
     with true <- id =~ "follows",
@@ -374,9 +388,11 @@ defp get_follow_activity(follow_object, followed) do
     end
   end
 
+  def handle_incoming(data, options \\ [])
+
   # Flag objects are placed ahead of the ID check because Mastodon 2.8 and earlier send them
   # with nil ID.
-  def handle_incoming(%{"type" => "Flag", "object" => objects, "actor" => actor} = data) do
+  def handle_incoming(%{"type" => "Flag", "object" => objects, "actor" => actor} = data, _options) do
     with context <- data["context"] || Utils.generate_context_id(),
          content <- data["content"] || "",
          %User{} = actor <- User.get_cached_by_ap_id(actor),
@@ -409,15 +425,19 @@ def handle_incoming(%{"type" => "Flag", "object" => objects, "actor" => actor} =
   end
 
   # disallow objects with bogus IDs
-  def handle_incoming(%{"id" => nil}), do: :error
-  def handle_incoming(%{"id" => ""}), do: :error
+  def handle_incoming(%{"id" => nil}, _options), do: :error
+  def handle_incoming(%{"id" => ""}, _options), do: :error
   # length of https:// = 8, should validate better, but good enough for now.
-  def handle_incoming(%{"id" => id}) when not (is_binary(id) and length(id) > 8), do: :error
+  def handle_incoming(%{"id" => id}, _options) when not (is_binary(id) and length(id) > 8),
+    do: :error
 
   # TODO: validate those with a Ecto scheme
   # - tags
   # - emoji
-  def handle_incoming(%{"type" => "Create", "object" => %{"type" => objtype} = object} = data)
+  def handle_incoming(
+        %{"type" => "Create", "object" => %{"type" => objtype} = object} = data,
+        options
+      )
       when objtype in ["Article", "Note", "Video", "Page", "Question", "Answer"] do
     actor = Containment.get_actor(data)
 
@@ -427,7 +447,8 @@ def handle_incoming(%{"type" => "Create", "object" => %{"type" => objtype} = obj
 
     with nil <- Activity.get_create_by_object_ap_id(object["id"]),
          {:ok, %User{} = user} <- User.get_or_fetch_by_ap_id(data["actor"]) do
-      object = fix_object(data["object"])
+      options = Keyword.put(options, :depth, (options[:depth] || 0) + 1)
+      object = fix_object(data["object"], options)
 
       params = %{
         to: data["to"],
@@ -452,7 +473,8 @@ def handle_incoming(%{"type" => "Create", "object" => %{"type" => objtype} = obj
   end
 
   def handle_incoming(
-        %{"type" => "Follow", "object" => followed, "actor" => follower, "id" => id} = data
+        %{"type" => "Follow", "object" => followed, "actor" => follower, "id" => id} = data,
+        _options
       ) do
     with %User{local: true} = followed <- User.get_cached_by_ap_id(followed),
          {:ok, %User{} = follower} <- User.get_or_fetch_by_ap_id(follower),
@@ -503,7 +525,8 @@ def handle_incoming(
   end
 
   def handle_incoming(
-        %{"type" => "Accept", "object" => follow_object, "actor" => _actor, "id" => _id} = data
+        %{"type" => "Accept", "object" => follow_object, "actor" => _actor, "id" => _id} = data,
+        _options
       ) do
     with actor <- Containment.get_actor(data),
          {:ok, %User{} = followed} <- User.get_or_fetch_by_ap_id(actor),
@@ -524,7 +547,8 @@ def handle_incoming(
   end
 
   def handle_incoming(
-        %{"type" => "Reject", "object" => follow_object, "actor" => _actor, "id" => _id} = data
+        %{"type" => "Reject", "object" => follow_object, "actor" => _actor, "id" => _id} = data,
+        _options
       ) do
     with actor <- Containment.get_actor(data),
          {:ok, %User{} = followed} <- User.get_or_fetch_by_ap_id(actor),
@@ -548,7 +572,8 @@ def handle_incoming(
   end
 
   def handle_incoming(
-        %{"type" => "Like", "object" => object_id, "actor" => _actor, "id" => id} = data
+        %{"type" => "Like", "object" => object_id, "actor" => _actor, "id" => id} = data,
+        _options
       ) do
     with actor <- Containment.get_actor(data),
          {:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
@@ -561,7 +586,8 @@ def handle_incoming(
   end
 
   def handle_incoming(
-        %{"type" => "Announce", "object" => object_id, "actor" => _actor, "id" => id} = data
+        %{"type" => "Announce", "object" => object_id, "actor" => _actor, "id" => id} = data,
+        _options
       ) do
     with actor <- Containment.get_actor(data),
          {:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
@@ -576,7 +602,8 @@ def handle_incoming(
 
   def handle_incoming(
         %{"type" => "Update", "object" => %{"type" => object_type} = object, "actor" => actor_id} =
-          data
+          data,
+        _options
       )
       when object_type in ["Person", "Application", "Service", "Organization"] do
     with %User{ap_id: ^actor_id} = actor <- User.get_cached_by_ap_id(object["id"]) do
@@ -614,7 +641,8 @@ def handle_incoming(
   # an error or a tombstone.  This would allow us to verify that a deletion actually took
   # place.
   def handle_incoming(
-        %{"type" => "Delete", "object" => object_id, "actor" => _actor, "id" => _id} = data
+        %{"type" => "Delete", "object" => object_id, "actor" => _actor, "id" => _id} = data,
+        _options
       ) do
     object_id = Utils.get_ap_id(object_id)
 
@@ -635,7 +663,8 @@ def handle_incoming(
           "object" => %{"type" => "Announce", "object" => object_id},
           "actor" => _actor,
           "id" => id
-        } = data
+        } = data,
+        _options
       ) do
     with actor <- Containment.get_actor(data),
          {:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
@@ -653,7 +682,8 @@ def handle_incoming(
           "object" => %{"type" => "Follow", "object" => followed},
           "actor" => follower,
           "id" => id
-        } = _data
+        } = _data,
+        _options
       ) do
     with %User{local: true} = followed <- User.get_cached_by_ap_id(followed),
          {:ok, %User{} = follower} <- User.get_or_fetch_by_ap_id(follower),
@@ -671,7 +701,8 @@ def handle_incoming(
           "object" => %{"type" => "Block", "object" => blocked},
           "actor" => blocker,
           "id" => id
-        } = _data
+        } = _data,
+        _options
       ) do
     with true <- Pleroma.Config.get([:activitypub, :accept_blocks]),
          %User{local: true} = blocked <- User.get_cached_by_ap_id(blocked),
@@ -685,7 +716,8 @@ def handle_incoming(
   end
 
   def handle_incoming(
-        %{"type" => "Block", "object" => blocked, "actor" => blocker, "id" => id} = _data
+        %{"type" => "Block", "object" => blocked, "actor" => blocker, "id" => id} = _data,
+        _options
       ) do
     with true <- Pleroma.Config.get([:activitypub, :accept_blocks]),
          %User{local: true} = blocked = User.get_cached_by_ap_id(blocked),
@@ -705,7 +737,8 @@ def handle_incoming(
           "object" => %{"type" => "Like", "object" => object_id},
           "actor" => _actor,
           "id" => id
-        } = data
+        } = data,
+        _options
       ) do
     with actor <- Containment.get_actor(data),
          {:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
@@ -717,10 +750,10 @@ def handle_incoming(
     end
   end
 
-  def handle_incoming(_), do: :error
+  def handle_incoming(_, _), do: :error
 
-  def get_obj_helper(id) do
-    if object = Object.normalize(id), do: {:ok, object}, else: nil
+  def get_obj_helper(id, options \\ []) do
+    if object = Object.normalize(id, true, options), do: {:ok, object}, else: nil
   end
 
   def set_reply_to_uri(%{"inReplyTo" => in_reply_to} = object) when is_binary(in_reply_to) do

lib/pleroma/web/activity_pub/utils.ex

@@ -170,14 +170,17 @@ def create_context(context) do
   Enqueues an activity for federation if it's local
   """
   def maybe_federate(%Activity{local: true} = activity) do
-    priority =
-      case activity.data["type"] do
-        "Delete" -> 10
-        "Create" -> 1
-        _ -> 5
-      end
+    if Pleroma.Config.get!([:instance, :federating]) do
+      priority =
+        case activity.data["type"] do
+          "Delete" -> 10
+          "Create" -> 1
+          _ -> 5
+        end
+
+      Pleroma.Web.Federator.publish(activity, priority)
+    end
 
-    Pleroma.Web.Federator.publish(activity, priority)
     :ok
   end
 

lib/pleroma/web/admin_api/admin_api_controller.ex

@@ -74,7 +74,7 @@ def user_create(
   end
 
   def user_show(conn, %{"nickname" => nickname}) do
-    with %User{} = user <- User.get_cached_by_nickname(nickname) do
+    with %User{} = user <- User.get_cached_by_nickname_or_id(nickname) do
       conn
       |> json(AccountView.render("show.json", %{user: user}))
     else

lib/pleroma/web/admin_api/views/report_view.ex

@@ -46,8 +46,10 @@ def render("show.json", %{report: report}) do
     }
   end
 
-  defp merge_account_views(user) do
+  defp merge_account_views(%User{} = user) do
     Pleroma.Web.MastodonAPI.AccountView.render("account.json", %{user: user})
     |> Map.merge(Pleroma.Web.AdminAPI.AccountView.render("show.json", %{user: user}))
   end
+
+  defp merge_account_views(_), do: %{}
 end

lib/pleroma/web/federator/federator.ex

@@ -22,6 +22,18 @@ def init do
     refresh_subscriptions()
   end
 
+  @doc "Addresses [memory leaks on recursive replies fetching](https://git.pleroma.social/pleroma/pleroma/issues/161)"
+  # credo:disable-for-previous-line Credo.Check.Readability.MaxLineLength
+  def allowed_incoming_reply_depth?(depth) do
+    max_replies_depth = Pleroma.Config.get([:instance, :federation_incoming_replies_max_depth])
+
+    if max_replies_depth do
+      (depth || 1) <= max_replies_depth
+    else
+      true
+    end
+  end
+
   # Client API
 
   def incoming_doc(doc) do

lib/pleroma/web/mastodon_api/mastodon_api_controller.ex

@@ -167,6 +167,69 @@ def update_credentials(%{assigns: %{user: user}} = conn, params) do
     end
   end
 
+  def update_avatar(%{assigns: %{user: user}} = conn, %{"img" => ""}) do
+    change = Changeset.change(user, %{avatar: nil})
+    {:ok, user} = User.update_and_set_cache(change)
+    CommonAPI.update(user)
+
+    json(conn, %{url: nil})
+  end
+
+  def update_avatar(%{assigns: %{user: user}} = conn, params) do
+    {:ok, object} = ActivityPub.upload(params, type: :avatar)
+    change = Changeset.change(user, %{avatar: object.data})
+    {:ok, user} = User.update_and_set_cache(change)
+    CommonAPI.update(user)
+    %{"url" => [%{"href" => href} | _]} = object.data
+
+    json(conn, %{url: href})
+  end
+
+  def update_banner(%{assigns: %{user: user}} = conn, %{"banner" => ""}) do
+    with new_info <- %{"banner" => %{}},
+         info_cng <- User.Info.profile_update(user.info, new_info),
+         changeset <- Ecto.Changeset.change(user) |> Ecto.Changeset.put_embed(:info, info_cng),
+         {:ok, user} <- User.update_and_set_cache(changeset) do
+      CommonAPI.update(user)
+
+      json(conn, %{url: nil})
+    end
+  end
+
+  def update_banner(%{assigns: %{user: user}} = conn, params) do
+    with {:ok, object} <- ActivityPub.upload(%{"img" => params["banner"]}, type: :banner),
+         new_info <- %{"banner" => object.data},
+         info_cng <- User.Info.profile_update(user.info, new_info),
+         changeset <- Ecto.Changeset.change(user) |> Ecto.Changeset.put_embed(:info, info_cng),
+         {:ok, user} <- User.update_and_set_cache(changeset) do
+      CommonAPI.update(user)
+      %{"url" => [%{"href" => href} | _]} = object.data
+
+      json(conn, %{url: href})
+    end
+  end
+
+  def update_background(%{assigns: %{user: user}} = conn, %{"img" => ""}) do
+    with new_info <- %{"background" => %{}},
+         info_cng <- User.Info.profile_update(user.info, new_info),
+         changeset <- Ecto.Changeset.change(user) |> Ecto.Changeset.put_embed(:info, info_cng),
+         {:ok, _user} <- User.update_and_set_cache(changeset) do
+      json(conn, %{url: nil})
+    end
+  end
+
+  def update_background(%{assigns: %{user: user}} = conn, params) do
+    with {:ok, object} <- ActivityPub.upload(params, type: :background),
+         new_info <- %{"background" => object.data},
+         info_cng <- User.Info.profile_update(user.info, new_info),
+         changeset <- Ecto.Changeset.change(user) |> Ecto.Changeset.put_embed(:info, info_cng),
+         {:ok, _user} <- User.update_and_set_cache(changeset) do
+      %{"url" => [%{"href" => href} | _]} = object.data
+
+      json(conn, %{url: href})
+    end
+  end
+
   def verify_credentials(%{assigns: %{user: user}} = conn, _) do
     chat_token = Phoenix.Token.sign(conn, "user socket", user.id)
 

lib/pleroma/web/mastodon_api/search_controller.ex

@@ -17,8 +17,8 @@ defmodule Pleroma.Web.MastodonAPI.SearchController do
   plug(Pleroma.Plugs.RateLimiter, :search when action in [:search, :search2, :account_search])
 
   def search2(%{assigns: %{user: user}} = conn, %{"q" => query} = params) do
-    accounts = User.search(query, search_options(params, user))
-    statuses = Activity.search(user, query)
+    accounts = with_fallback(fn -> User.search(query, search_options(params, user)) end, [])
+    statuses = with_fallback(fn -> Activity.search(user, query) end, [])
     tags_path = Web.base_url() <> "/tag/"
 
     tags =
@@ -40,8 +40,8 @@ def search2(%{assigns: %{user: user}} = conn, %{"q" => query} = params) do
   end
 
   def search(%{assigns: %{user: user}} = conn, %{"q" => query} = params) do
-    accounts = User.search(query, search_options(params, user))
-    statuses = Activity.search(user, query)
+    accounts = with_fallback(fn -> User.search(query, search_options(params, user)) end, [])
+    statuses = with_fallback(fn -> Activity.search(user, query) end, [])
 
     tags =
       query
@@ -76,4 +76,14 @@ defp search_options(params, user) do
       for_user: user
     ]
   end
+
+  defp with_fallback(f, fallback) do
+    try do
+      f.()
+    rescue
+      error ->
+        Logger.error("#{__MODULE__} search error: #{inspect(error)}")
+        fallback
+    end
+  end
 end

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

@@ -104,7 +104,7 @@ def render(
       id: to_string(activity.id),
       uri: activity_object.data["id"],
       url: activity_object.data["id"],
-      account: AccountView.render("account.json", %{user: user}),
+      account: AccountView.render("account.json", %{user: user, for: opts[:for]}),
       in_reply_to_id: nil,
       in_reply_to_account_id: nil,
       reblog: reblogged,
@@ -221,7 +221,7 @@ def render("status.json", %{activity: %{data: %{"object" => _object}} = activity
       id: to_string(activity.id),
       uri: object.data["id"],
       url: url,
-      account: AccountView.render("account.json", %{user: user}),
+      account: AccountView.render("account.json", %{user: user, for: opts[:for]}),
       in_reply_to_id: reply_to && to_string(reply_to.id),
       in_reply_to_account_id: reply_to_user && to_string(reply_to_user.id),
       reblog: nil,

lib/pleroma/web/mastodon_api/websocket_handler.ex

@@ -29,9 +29,10 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
 
   def init(%{qs: qs} = req, state) do
     with params <- :cow_qs.parse_qs(qs),
+         sec_websocket <- :cowboy_req.header("sec-websocket-protocol", req, nil),
          access_token <- List.keyfind(params, "access_token", 0),
          {_, stream} <- List.keyfind(params, "stream", 0),
-         {:ok, user} <- allow_request(stream, access_token),
+         {:ok, user} <- allow_request(stream, [access_token, sec_websocket]),
          topic when is_binary(topic) <- expand_topic(stream, params) do
       {:cowboy_websocket, req, %{user: user, topic: topic}, %{idle_timeout: @timeout}}
     else
@@ -84,13 +85,21 @@ def terminate(reason, _req, state) do
   end
 
   # Public streams without authentication.
-  defp allow_request(stream, nil) when stream in @anonymous_streams do
+  defp allow_request(stream, [nil, nil]) when stream in @anonymous_streams do
     {:ok, nil}
   end
 
   # Authenticated streams.
-  defp allow_request(stream, {"access_token", access_token}) when stream in @streams do
-    with %Token{user_id: user_id} <- Repo.get_by(Token, token: access_token),
+  defp allow_request(stream, [access_token, sec_websocket]) when stream in @streams do
+    token =
+      with {"access_token", token} <- access_token do
+        token
+      else
+        _ -> sec_websocket
+      end
+
+    with true <- is_bitstring(token),
+         %Token{user_id: user_id} <- Repo.get_by(Token, token: token),
          user = %User{} <- User.get_cached_by_id(user_id) do
       {:ok, user}
     else

lib/pleroma/web/media_proxy/media_proxy.ex

@@ -33,20 +33,7 @@ defp whitelisted?(url) do
 
   def encode_url(url) do
     secret = Pleroma.Config.get([Pleroma.Web.Endpoint, :secret_key_base])
-
-    # Must preserve `%2F` for compatibility with S3
-    # https://git.pleroma.social/pleroma/pleroma/issues/580
-    replacement = get_replacement(url, ":2F:")
-
-    # The URL is url-decoded and encoded again to ensure it is correctly encoded and not twice.
-    base64 =
-      url
-      |> String.replace("%2F", replacement)
-      |> URI.decode()
-      |> URI.encode()
-      |> String.replace(replacement, "%2F")
-      |> Base.url_encode64(@base64_opts)
-
+    base64 = Base.url_encode64(url, @base64_opts)
     sig = :crypto.hmac(:sha, secret, base64)
     sig64 = sig |> Base.url_encode64(@base64_opts)
 
@@ -80,12 +67,4 @@ def build_url(sig_base64, url_base64, filename \\ nil) do
     |> Enum.filter(fn value -> value end)
     |> Path.join()
   end
-
-  defp get_replacement(url, replacement) do
-    if String.contains?(url, replacement) do
-      get_replacement(url, replacement <> replacement)
-    else
-      replacement
-    end
-  end
 end

lib/pleroma/web/metadata/opengraph.ex

@@ -121,4 +121,6 @@ defp build_attachments(%{data: %{"attachment" => attachments}}) do
       acc ++ rendered_tags
     end)
   end
+
+  defp build_attachments(_), do: []
 end

lib/pleroma/web/metadata/twitter_card.ex

@@ -117,6 +117,8 @@ defp build_attachments(id, %{data: %{"attachment" => attachments}}) do
     end)
   end
 
+  defp build_attachments(_id, _object), do: []
+
   defp player_url(id) do
     Pleroma.Web.Router.Helpers.o_status_url(Pleroma.Web.Endpoint, :notice_player, id)
   end

lib/pleroma/web/nodeinfo/nodeinfo_controller.ex

@@ -162,7 +162,8 @@ def raw_nodeinfo do
         accountActivationRequired: Config.get([:instance, :account_activation_required], false),
         invitesEnabled: Config.get([:instance, :invites_enabled], false),
         features: features,
-        restrictedNicknames: Config.get([Pleroma.User, :restricted_nicknames])
+        restrictedNicknames: Config.get([Pleroma.User, :restricted_nicknames]),
+        skipThreadContainment: Config.get([:instance, :skip_thread_containment], false)
       }
     }
   end

lib/pleroma/web/ostatus/handlers/note_handler.ex

@@ -10,6 +10,7 @@ defmodule Pleroma.Web.OStatus.NoteHandler do
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.ActivityPub.Utils
   alias Pleroma.Web.CommonAPI
+  alias Pleroma.Web.Federator
   alias Pleroma.Web.OStatus
   alias Pleroma.Web.XML
 
@@ -88,14 +89,15 @@ def add_external_url(note, entry) do
     Map.put(note, "external_url", url)
   end
 
-  def fetch_replied_to_activity(entry, in_reply_to) do
+  def fetch_replied_to_activity(entry, in_reply_to, options \\ []) do
     with %Activity{} = activity <- Activity.get_create_by_object_ap_id(in_reply_to) do
       activity
     else
       _e ->
-        with in_reply_to_href when not is_nil(in_reply_to_href) <-
+        with true <- Federator.allowed_incoming_reply_depth?(options[:depth]),
+             in_reply_to_href when not is_nil(in_reply_to_href) <-
                XML.string_from_xpath("//thr:in-reply-to[1]/@href", entry),
-             {:ok, [activity | _]} <- OStatus.fetch_activity_from_url(in_reply_to_href) do
+             {:ok, [activity | _]} <- OStatus.fetch_activity_from_url(in_reply_to_href, options) do
           activity
         else
           _e -> nil
@@ -104,7 +106,7 @@ def fetch_replied_to_activity(entry, in_reply_to) do
   end
 
   # TODO: Clean this up a bit.
-  def handle_note(entry, doc \\ nil) do
+  def handle_note(entry, doc \\ nil, options \\ []) do
     with id <- XML.string_from_xpath("//id", entry),
          activity when is_nil(activity) <- Activity.get_create_by_object_ap_id_with_object(id),
          [author] <- :xmerl_xpath.string('//author[1]', doc),
@@ -112,7 +114,8 @@ def handle_note(entry, doc \\ nil) do
          content_html <- OStatus.get_content(entry),
          cw <- OStatus.get_cw(entry),
          in_reply_to <- XML.string_from_xpath("//thr:in-reply-to[1]/@ref", entry),
-         in_reply_to_activity <- fetch_replied_to_activity(entry, in_reply_to),
+         options <- Keyword.put(options, :depth, (options[:depth] || 0) + 1),
+         in_reply_to_activity <- fetch_replied_to_activity(entry, in_reply_to, options),
          in_reply_to_object <-
            (in_reply_to_activity && Object.normalize(in_reply_to_activity)) || nil,
          in_reply_to <- (in_reply_to_object && in_reply_to_object.data["id"]) || in_reply_to,

lib/pleroma/web/ostatus/ostatus.ex

@@ -54,7 +54,7 @@ def remote_follow_path do
     "#{Web.base_url()}/ostatus_subscribe?acct={uri}"
   end
 
-  def handle_incoming(xml_string) do
+  def handle_incoming(xml_string, options \\ []) do
     with doc when doc != :error <- parse_document(xml_string) do
       with {:ok, actor_user} <- find_make_or_update_user(doc),
            do: Pleroma.Instances.set_reachable(actor_user.ap_id)
@@ -91,10 +91,12 @@ def handle_incoming(xml_string) do
               _ ->
                 case object_type do
                   'http://activitystrea.ms/schema/1.0/note' ->
-                    with {:ok, activity} <- NoteHandler.handle_note(entry, doc), do: activity
+                    with {:ok, activity} <- NoteHandler.handle_note(entry, doc, options),
+                         do: activity
 
                   'http://activitystrea.ms/schema/1.0/comment' ->
-                    with {:ok, activity} <- NoteHandler.handle_note(entry, doc), do: activity
+                    with {:ok, activity} <- NoteHandler.handle_note(entry, doc, options),
+                         do: activity
 
                   _ ->
                     Logger.error("Couldn't parse incoming document")
@@ -359,7 +361,7 @@ def get_atom_url(body) do
     end
   end
 
-  def fetch_activity_from_atom_url(url) do
+  def fetch_activity_from_atom_url(url, options \\ []) do
     with true <- String.starts_with?(url, "http"),
          {:ok, %{body: body, status: code}} when code in 200..299 <-
            HTTP.get(
@@ -367,7 +369,7 @@ def fetch_activity_from_atom_url(url) do
              [{:Accept, "application/atom+xml"}]
            ) do
       Logger.debug("Got document from #{url}, handling...")
-      handle_incoming(body)
+      handle_incoming(body, options)
     else
       e ->
         Logger.debug("Couldn't get #{url}: #{inspect(e)}")
@@ -375,13 +377,13 @@ def fetch_activity_from_atom_url(url) do
     end
   end
 
-  def fetch_activity_from_html_url(url) do
+  def fetch_activity_from_html_url(url, options \\ []) do
     Logger.debug("Trying to fetch #{url}")
 
     with true <- String.starts_with?(url, "http"),
          {:ok, %{body: body}} <- HTTP.get(url, []),
          {:ok, atom_url} <- get_atom_url(body) do
-      fetch_activity_from_atom_url(atom_url)
+      fetch_activity_from_atom_url(atom_url, options)
     else
       e ->
         Logger.debug("Couldn't get #{url}: #{inspect(e)}")
@@ -389,11 +391,11 @@ def fetch_activity_from_html_url(url) do
     end
   end
 
-  def fetch_activity_from_url(url) do
-    with {:ok, [_ | _] = activities} <- fetch_activity_from_atom_url(url) do
+  def fetch_activity_from_url(url, options \\ []) do
+    with {:ok, [_ | _] = activities} <- fetch_activity_from_atom_url(url, options) do
       {:ok, activities}
     else
-      _e -> fetch_activity_from_html_url(url)
+      _e -> fetch_activity_from_html_url(url, options)
     end
   rescue
     e ->

lib/pleroma/web/router.ex

@@ -322,6 +322,10 @@ defmodule Pleroma.Web.Router do
 
       patch("/accounts/update_credentials", MastodonAPIController, :update_credentials)
 
+      patch("/accounts/update_avatar", MastodonAPIController, :update_avatar)
+      patch("/accounts/update_banner", MastodonAPIController, :update_banner)
+      patch("/accounts/update_background", MastodonAPIController, :update_background)
+
       post("/statuses", MastodonAPIController, :post_status)
       delete("/statuses/:id", MastodonAPIController, :delete_status)
 
@@ -726,6 +730,7 @@ defmodule Pleroma.Web.Router do
 
 defmodule Fallback.RedirectController do
   use Pleroma.Web, :controller
+  require Logger
   alias Pleroma.User
   alias Pleroma.Web.Metadata
 
@@ -752,7 +757,20 @@ def redirector_with_meta(conn, %{"maybe_nickname_or_id" => maybe_nickname_or_id}
 
   def redirector_with_meta(conn, params) do
     {:ok, index_content} = File.read(index_file_path())
-    tags = Metadata.build_tags(params)
+
+    tags =
+      try do
+        Metadata.build_tags(params)
+      rescue
+        e ->
+          Logger.error(
+            "Metadata rendering for #{conn.request_path} failed.\n" <>
+              Exception.format(:error, e, __STACKTRACE__)
+          )
+
+          ""
+      end
+
     response = String.replace(index_content, "<!--server-generated-meta-->", tags)
 
     conn

lib/pleroma/web/twitter_api/twitter_api_controller.ex

@@ -456,6 +456,16 @@ def resend_confirmation_email(conn, params) do
     end
   end
 
+  def update_avatar(%{assigns: %{user: user}} = conn, %{"img" => ""}) do
+    change = Changeset.change(user, %{avatar: nil})
+    {:ok, user} = User.update_and_set_cache(change)
+    CommonAPI.update(user)
+
+    conn
+    |> put_view(UserView)
+    |> render("show.json", %{user: user, for: user})
+  end
+
   def update_avatar(%{assigns: %{user: user}} = conn, params) do
     {:ok, object} = ActivityPub.upload(params, type: :avatar)
     change = Changeset.change(user, %{avatar: object.data})
@@ -467,6 +477,19 @@ def update_avatar(%{assigns: %{user: user}} = conn, params) do
     |> render("show.json", %{user: user, for: user})
   end
 
+  def update_banner(%{assigns: %{user: user}} = conn, %{"banner" => ""}) do
+    with new_info <- %{"banner" => %{}},
+         info_cng <- User.Info.profile_update(user.info, new_info),
+         changeset <- Ecto.Changeset.change(user) |> Ecto.Changeset.put_embed(:info, info_cng),
+         {:ok, user} <- User.update_and_set_cache(changeset) do
+      CommonAPI.update(user)
+      response = %{url: nil} |> Jason.encode!()
+
+      conn
+      |> json_reply(200, response)
+    end
+  end
+
   def update_banner(%{assigns: %{user: user}} = conn, params) do
     with {:ok, object} <- ActivityPub.upload(%{"img" => params["banner"]}, type: :banner),
          new_info <- %{"banner" => object.data},
@@ -482,6 +505,18 @@ def update_banner(%{assigns: %{user: user}} = conn, params) do
     end
   end
 
+  def update_background(%{assigns: %{user: user}} = conn, %{"img" => ""}) do
+    with new_info <- %{"background" => %{}},
+         info_cng <- User.Info.profile_update(user.info, new_info),
+         changeset <- Ecto.Changeset.change(user) |> Ecto.Changeset.put_embed(:info, info_cng),
+         {:ok, _user} <- User.update_and_set_cache(changeset) do
+      response = %{url: nil} |> Jason.encode!()
+
+      conn
+      |> json_reply(200, response)
+    end
+  end
+
   def update_background(%{assigns: %{user: user}} = conn, params) do
     with {:ok, object} <- ActivityPub.upload(params, type: :background),
          new_info <- %{"background" => object.data},

mix.exs

@@ -109,7 +109,6 @@ defp deps do
       {:phoenix_html, "~> 2.10"},
       {:calendar, "~> 0.17.4"},
       {:cachex, "~> 3.0.2"},
-      {:httpoison, "~> 1.2.0"},
       {:poison, "~> 3.0", override: true},
       {:tesla, "~> 1.2"},
       {:jason, "~> 1.0"},
@@ -154,7 +153,8 @@ defp deps do
       {:esshd, "~> 0.1.0", runtime: Application.get_env(:esshd, :enabled, false)},
       {:ex_rated, "~> 1.3"},
       {:plug_static_index_html, "~> 1.0.0"},
-      {:excoveralls, "~> 0.11.1", only: :test}
+      {:excoveralls, "~> 0.11.1", only: :test},
+      {:mox, "~> 0.5", only: :test}
     ] ++ oauth_deps()
   end
 
@@ -177,10 +177,14 @@ defp aliases do
   # Builds a version string made of:
   # * the application version
   # * a pre-release if ahead of the tag: the describe string (-count-commithash)
-  # * build info:
+  # * branch name
+  # * build metadata:
   #   * a build name if `PLEROMA_BUILD_NAME` or `:pleroma, :build_name` is defined
   #   * the mix environment if different than prod
   defp version(version) do
+    identifier_filter = ~r/[^0-9a-z\-]+/i
+
+    # Pre-release version, denoted from patch version with a hyphen
     {git_tag, git_pre_release} =
       with {tag, 0} <-
              System.cmd("git", ["describe", "--tags", "--abbrev=0"], stderr_to_stdout: true),
@@ -201,6 +205,19 @@ defp version(version) do
       )
     end
 
+    # Branch name as pre-release version component, denoted with a dot
+    branch_name =
+      with {branch_name, 0} <- System.cmd("git", ["rev-parse", "--abbrev-ref", "HEAD"]),
+           branch_name <- System.get_env("PLEROMA_BUILD_BRANCH") || branch_name,
+           true <- branch_name != "master" do
+        branch_name =
+          branch_name
+          |> String.trim()
+          |> String.replace(identifier_filter, "-")
+
+        "." <> branch_name
+      end
+
     build_name =
       cond do
         name = Application.get_env(:pleroma, :build_name) -> name
@@ -209,28 +226,26 @@ defp version(version) do
       end
 
     env_name = if Mix.env() != :prod, do: to_string(Mix.env())
+    env_override = System.get_env("PLEROMA_BUILD_ENV")
 
-    build =
-      [build_name, env_name]
-      |> Enum.filter(fn string -> string && string != "" end)
-      |> Enum.join("-")
-      |> (fn
-            "" -> nil
-            string -> "+" <> string
-          end).()
-
-    branch_name =
-      with {branch_name, 0} <- System.cmd("git", ["rev-parse", "--abbrev-ref", "HEAD"]),
-           branch_name <- System.get_env("PLEROMA_BUILD_BRANCH") || branch_name,
-           true <- branch_name != "master" do
-        branch_name =
-          String.trim(branch_name)
-          |> String.replace(~r/[^0-9a-z\-\.]+/i, "-")
-
-        "-" <> branch_name
+    env_name =
+      case env_override do
+        nil -> env_name
+        env_override when env_override in ["", "prod"] -> nil
+        env_override -> env_override
       end
 
-    [version, git_pre_release, branch_name, build]
+    # Build metadata, denoted with a plus sign
+    build_metadata =
+      [build_name, env_name]
+      |> Enum.filter(fn string -> string && string != "" end)
+      |> Enum.join(".")
+      |> (fn
+            "" -> nil
+            string -> "+" <> String.replace(string, identifier_filter, "-")
+          end).()
+
+    [version, git_pre_release, branch_name, build_metadata]
     |> Enum.filter(fn string -> string && string != "" end)
     |> Enum.join()
   end

mix.lock

@@ -57,6 +57,7 @@
   "mochiweb": {:hex, :mochiweb, "2.18.0", "eb55f1db3e6e960fac4e6db4e2db9ec3602cc9f30b86cd1481d56545c3145d2e", [:rebar3], [], "hexpm"},
   "mock": {:hex, :mock, "0.3.3", "42a433794b1291a9cf1525c6d26b38e039e0d3a360732b5e467bfc77ef26c914", [:mix], [{:meck, "~> 0.8.13", [hex: :meck, repo: "hexpm", optional: false]}], "hexpm"},
   "mogrify": {:hex, :mogrify, "0.6.1", "de1b527514f2d95a7bbe9642eb556061afb337e220cf97adbf3a4e6438ed70af", [:mix], [], "hexpm"},
+  "mox": {:hex, :mox, "0.5.1", "f86bb36026aac1e6f924a4b6d024b05e9adbed5c63e8daa069bd66fb3292165b", [:mix], [], "hexpm"},
   "nimble_parsec": {:hex, :nimble_parsec, "0.5.0", "90e2eca3d0266e5c53f8fbe0079694740b9c91b6747f2b7e3c5d21966bba8300", [:mix], [], "hexpm"},
   "parse_trans": {:hex, :parse_trans, "3.3.0", "09765507a3c7590a784615cfd421d101aec25098d50b89d7aa1d66646bc571c1", [:rebar3], [], "hexpm"},
   "pbkdf2_elixir": {:hex, :pbkdf2_elixir, "0.12.3", "6706a148809a29c306062862c803406e88f048277f6e85b68faf73291e820b84", [:mix], [], "hexpm"},
@@ -71,14 +72,12 @@
   "plug_crypto": {:hex, :plug_crypto, "1.0.0", "18e49317d3fa343f24620ed22795ec29d4a5e602d52d1513ccea0b07d8ea7d4d", [:mix], [], "hexpm"},
   "plug_static_index_html": {:hex, :plug_static_index_html, "1.0.0", "840123d4d3975585133485ea86af73cb2600afd7f2a976f9f5fd8b3808e636a0", [:mix], [{:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
   "poison": {:hex, :poison, "3.1.0", "d9eb636610e096f86f25d9a46f35a9facac35609a7591b3be3326e99a0484665", [:mix], [], "hexpm"},
-  "poolboy": {:hex, :poolboy, "1.5.2", "392b007a1693a64540cead79830443abf5762f5d30cf50bc95cb2c1aaafa006b", [:rebar3], [], "hexpm"},
   "postgrex": {:hex, :postgrex, "0.14.3", "5754dee2fdf6e9e508cbf49ab138df964278700b764177e8f3871e658b345a1e", [:mix], [{:connection, "~> 1.0", [hex: :connection, repo: "hexpm", optional: false]}, {:db_connection, "~> 2.0", [hex: :db_connection, repo: "hexpm", optional: false]}, {:decimal, "~> 1.5", [hex: :decimal, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm"},
   "prometheus": {:hex, :prometheus, "4.2.2", "a830e77b79dc6d28183f4db050a7cac926a6c58f1872f9ef94a35cd989aceef8", [:mix, :rebar3], [], "hexpm"},
   "prometheus_ecto": {:hex, :prometheus_ecto, "1.4.1", "6c768ea9654de871e5b32fab2eac348467b3021604ebebbcbd8bcbe806a65ed5", [:mix], [{:ecto, "~> 2.0 or ~> 3.0", [hex: :ecto, repo: "hexpm", optional: false]}, {:prometheus_ex, "~> 1.1 or ~> 2.0 or ~> 3.0", [hex: :prometheus_ex, repo: "hexpm", optional: false]}], "hexpm"},
   "prometheus_ex": {:hex, :prometheus_ex, "3.0.5", "fa58cfd983487fc5ead331e9a3e0aa622c67232b3ec71710ced122c4c453a02f", [:mix], [{:prometheus, "~> 4.0", [hex: :prometheus, repo: "hexpm", optional: false]}], "hexpm"},
   "prometheus_phoenix": {:hex, :prometheus_phoenix, "1.2.1", "964a74dfbc055f781d3a75631e06ce3816a2913976d1df7830283aa3118a797a", [:mix], [{:phoenix, "~> 1.3", [hex: :phoenix, repo: "hexpm", optional: false]}, {:prometheus_ex, "~> 1.3 or ~> 2.0 or ~> 3.0", [hex: :prometheus_ex, repo: "hexpm", optional: false]}], "hexpm"},
   "prometheus_plugs": {:hex, :prometheus_plugs, "1.1.5", "25933d48f8af3a5941dd7b621c889749894d8a1082a6ff7c67cc99dec26377c5", [:mix], [{:accept, "~> 0.1", [hex: :accept, repo: "hexpm", optional: false]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}, {:prometheus_ex, "~> 1.1 or ~> 2.0 or ~> 3.0", [hex: :prometheus_ex, repo: "hexpm", optional: false]}, {:prometheus_process_collector, "~> 1.1", [hex: :prometheus_process_collector, repo: "hexpm", optional: true]}], "hexpm"},
-  "prometheus_process_collector": {:hex, :prometheus_process_collector, "1.4.3", "657386e8f142fc817347d95c1f3a05ab08710f7df9e7f86db6facaed107ed929", [:rebar3], [{:prometheus, "~> 4.0", [hex: :prometheus, repo: "hexpm", optional: false]}], "hexpm"},
   "quack": {:hex, :quack, "0.1.1", "cca7b4da1a233757fdb44b3334fce80c94785b3ad5a602053b7a002b5a8967bf", [:mix], [{:poison, ">= 1.0.0", [hex: :poison, repo: "hexpm", optional: false]}, {:tesla, "~> 1.2.0", [hex: :tesla, repo: "hexpm", optional: false]}], "hexpm"},
   "quantum": {:hex, :quantum, "2.3.4", "72a0e8855e2adc101459eac8454787cb74ab4169de6ca50f670e72142d4960e9", [:mix], [{:calendar, "~> 0.17", [hex: :calendar, repo: "hexpm", optional: true]}, {:crontab, "~> 1.1", [hex: :crontab, repo: "hexpm", optional: false]}, {:gen_stage, "~> 0.12", [hex: :gen_stage, repo: "hexpm", optional: false]}, {:swarm, "~> 3.3", [hex: :swarm, repo: "hexpm", optional: false]}, {:timex, "~> 3.1", [hex: :timex, repo: "hexpm", optional: true]}], "hexpm"},
   "ranch": {:hex, :ranch, "1.7.1", "6b1fab51b49196860b733a49c07604465a47bdb78aa10c1c16a3d199f7f8c881", [:rebar3], [], "hexpm"},

priv/repo/migrations/20170320193800_create_user.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreatePleroma.User do
   use Ecto.Migration
 
   def change do
-    create table(:users) do
+    create_if_not_exists table(:users) do
       add :email, :string
       add :password_hash, :string
       add :name, :string

priv/repo/migrations/20170321074828_create_activity.exs

@@ -2,13 +2,13 @@ defmodule Pleroma.Repo.Migrations.CreatePleroma.Activity do
   use Ecto.Migration
 
   def change do
-    create table(:activities) do
+    create_if_not_exists table(:activities) do
       add :data, :map
 
       timestamps()
     end
 
-    create index(:activities, [:data], using: :gin)
+    create_if_not_exists index(:activities, [:data], using: :gin)
 
   end
 end

priv/repo/migrations/20170321074832_create_object.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreatePleroma.Object do
   use Ecto.Migration
 
   def change do
-    create table(:objects) do
+    create_if_not_exists table(:objects) do
       add :data, :map
 
       timestamps()

priv/repo/migrations/20170330153447_add_index_to_objects.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.AddIndexToObjects do
   use Ecto.Migration
 
   def change do
-    create index(:objects, [:data], using: :gin)
+    create_if_not_exists index(:objects, [:data], using: :gin)
   end
 end

priv/repo/migrations/20170415141210_add_unique_index_to_email_and_nickname.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.AddUniqueIndexToEmailAndNickname do
   use Ecto.Migration
 
   def change do
-    create unique_index(:users, [:email])
-    create unique_index(:users, [:nickname])
+    create_if_not_exists unique_index(:users, [:email])
+    create_if_not_exists unique_index(:users, [:nickname])
   end
 end

priv/repo/migrations/20170418200143_create_webssub_server_subscription.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreateWebsubServerSubscription do
   use Ecto.Migration
 
   def change do
-    create table(:websub_server_subscriptions) do
+    create_if_not_exists table(:websub_server_subscriptions) do
       add :topic, :string
       add :callback, :string
       add :secret, :string

priv/repo/migrations/20170426154155_create_websub_client_subscription.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreateWebsubClientSubscription do
   use Ecto.Migration
 
   def change do
-    create table(:websub_client_subscriptions) do
+    create_if_not_exists table(:websub_client_subscriptions) do
       add :topic, :string
       add :secret, :string
       add :valid_until, :naive_datetime_usec

priv/repo/migrations/20170501133231_add_id_contraints_to_activities_and_objects_part_two.exs

@@ -1,10 +1,12 @@
 defmodule Pleroma.Repo.Migrations.AddIdContraintsToActivitiesAndObjectsPartTwo do
   use Ecto.Migration
 
-  def change do
+  def up do
     drop_if_exists index(:objects, ["(data->>\"id\")"], name: :objects_unique_apid_index)
     drop_if_exists index(:activities, ["(data->>\"id\")"], name: :activities_unique_apid_index)
-    create unique_index(:objects, ["(data->>'id')"], name: :objects_unique_apid_index)
-    create unique_index(:activities, ["(data->>'id')"], name: :activities_unique_apid_index)
+    create_if_not_exists unique_index(:objects, ["(data->>'id')"], name: :objects_unique_apid_index)
+    create_if_not_exists unique_index(:activities, ["(data->>'id')"], name: :activities_unique_apid_index)
   end
+
+  def down, do: :ok
 end

priv/repo/migrations/20170502083023_add_local_field_to_activities.exs

@@ -6,6 +6,6 @@ def change do
       add :local, :boolean, default: true
     end
 
-    create index(:activities, [:local])
+    create_if_not_exists index(:activities, [:local])
   end
 end

priv/repo/migrations/20170506222027_add_unique_index_to_apid.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.AddUniqueIndexToAPID do
   use Ecto.Migration
 
   def change do
-    create unique_index(:users, [:ap_id])
+    create_if_not_exists unique_index(:users, [:ap_id])
   end
 end

priv/repo/migrations/20170522160642_case_insensivtivity.exs

@@ -1,19 +1,31 @@
 defmodule Pleroma.Repo.Migrations.CaseInsensivtivity do
   use Ecto.Migration
 
+  # Two-steps alters are intentional.
+  # When alter of 2 columns is done in a single operation,
+  # inconsistent failures happen because of index on `email` column.
+
   def up do
-    execute ("create extension if not exists citext")
+    execute("create extension if not exists citext")
+
     alter table(:users) do
-      modify :email, :citext
-      modify :nickname, :citext
+      modify(:email, :citext)
+    end
+
+    alter table(:users) do
+      modify(:nickname, :citext)
     end
   end
 
   def down do
     alter table(:users) do
-      modify :email, :string
-      modify :nickname, :string
+      modify(:email, :string)
     end
-    execute ("drop extension if exists citext")
+
+    alter table(:users) do
+      modify(:nickname, :string)
+    end
+
+    execute("drop extension if exists citext")
   end
 end

priv/repo/migrations/20170529093232_longer_bios.exs

@@ -1,9 +1,16 @@
 defmodule Pleroma.Repo.Migrations.LongerBios do
   use Ecto.Migration
 
-  def change do
+  def up do
     alter table(:users) do
       modify :bio, :text
     end
   end
+
+  def down do
+    alter table(:users) do
+      modify :bio, :string
+    end
+  end
+
 end

priv/repo/migrations/20170620095947_remove_activities_index.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.RemoveActivitiesIndex do
   use Ecto.Migration
 
   def change do
-    drop index(:activities, [:data])
+    drop_if_exists index(:activities, [:data])
   end
 end

priv/repo/migrations/20170620133028_add_object_activity_index.exs

@@ -3,6 +3,6 @@ defmodule Pleroma.Repo.Migrations.AddObjectActivityIndex do
 
   def change do
     # This was wrong, now a noop
-    # create index(:objects, ["(data->'object'->>'id')", "(data->>'type')"], name: :activities_create_objects_index)
+    # create_if_not_exists index(:objects, ["(data->'object'->>'id')", "(data->>'type')"], name: :activities_create_objects_index)
   end
 end

priv/repo/migrations/20170620142420_add_object_activity_index_part_two.exs

@@ -3,6 +3,6 @@ defmodule Pleroma.Repo.Migrations.AddObjectActivityIndexPartTwo do
 
   def change do
     drop_if_exists index(:objects, ["(data->'object'->>'id')", "(data->>'type')"], name: :activities_create_objects_index)
-    create index(:activities, ["(data->'object'->>'id')", "(data->>'type')"], name: :activities_create_objects_index)
+    create_if_not_exists index(:activities, ["(data->'object'->>'id')", "(data->>'type')"], name: :activities_create_objects_index)
   end
 end

priv/repo/migrations/20170701142005_add_actor_index_to_activity.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.AddActorIndexToActivity do
   use Ecto.Migration
 
   def change do
-    create index(:activities, ["(data->>'actor')", "inserted_at desc"], name: :activities_actor_index)
+    create_if_not_exists index(:activities, ["(data->>'actor')", "inserted_at desc"], name: :activities_actor_index)
   end
 end

priv/repo/migrations/20170906120646_add_mastodon_apps.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.AddMastodonApps do
   use Ecto.Migration
 
   def change do
-    create table(:apps) do
+    create_if_not_exists table(:apps) do
       add :client_name, :string
       add :redirect_uris, :string
       add :scopes, :string

priv/repo/migrations/20170906143140_create_o_auth_authorizations.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreateOAuthAuthorizations do
   use Ecto.Migration
 
   def change do
-    create table(:oauth_authorizations) do
+    create_if_not_exists table(:oauth_authorizations) do
       add :app_id, references(:apps)
       add :user_id, references(:users)
       add :token, :string

priv/repo/migrations/20170906152508_create_o_auth_token.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreateOAuthToken do
   use Ecto.Migration
 
   def change do
-    create table(:oauth_tokens) do
+    create_if_not_exists table(:oauth_tokens) do
       add :app_id, references(:apps)
       add :user_id, references(:users)
       add :token, :string

priv/repo/migrations/20170911123607_create_notifications.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreateNotifications do
   use Ecto.Migration
 
   def change do
-    create table(:notifications) do
+    create_if_not_exists table(:notifications) do
       add :user_id, references(:users, on_delete: :delete_all)
       add :activity_id, references(:activities, on_delete: :delete_all)
       add :seen, :boolean, default: false
@@ -10,6 +10,6 @@ def change do
       timestamps()
     end
 
-    create index(:notifications, [:user_id])
+    create_if_not_exists index(:notifications, [:user_id])
   end
 end

priv/repo/migrations/20171019141706_create_password_reset_tokens.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreatePasswordResetTokens do
   use Ecto.Migration
 
   def change do
-    create table(:password_reset_tokens) do
+    create_if_not_exists table(:password_reset_tokens) do
       add :token, :string
       add :user_id, references(:users)
       add :used, :boolean, default: false

priv/repo/migrations/20171109091239_add_actor_to_activity.exs

@@ -12,7 +12,7 @@ def up do
   end
 
   def down do
-    drop index(:activities, [:actor, "id DESC NULLS LAST"])
+    drop_if_exists index(:activities, [:actor, "id DESC NULLS LAST"])
     alter table(:activities) do
       remove :actor
     end

priv/repo/migrations/20171130135819_add_local_index_to_user.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.AddLocalIndexToUser do
   use Ecto.Migration
 
   def change do
-    create index(:users, [:local])
+    create_if_not_exists index(:users, [:local])
   end
 end

priv/repo/migrations/20171212163643_add_recipients_to_activities.exs

@@ -6,6 +6,6 @@ def change do
       add :recipients, {:array, :string}
     end
 
-    create index(:activities, [:recipients], using: :gin)
+    create_if_not_exists index(:activities, [:recipients], using: :gin)
   end
 end

priv/repo/migrations/20171212164525_fill_recipients_in_activities.exs

@@ -18,4 +18,6 @@ def up do
       end)
     end
   end
+
+  def down, do: :ok
 end

priv/repo/migrations/20180221210540_make_following_postgres_array.exs

@@ -1,7 +1,7 @@
 defmodule Pleroma.Repo.Migrations.MakeFollowingPostgresArray do
   use Ecto.Migration
 
-  def change do
+  def up do
     alter table(:users) do
       add :following_temp, {:array, :string}
     end
@@ -15,4 +15,6 @@ def change do
     end
     rename table(:users), :following_temp, to: :following
   end
+
+  def down, do: :ok
 end

priv/repo/migrations/20180327174350_drop_local_index_on_activities.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.DropLocalIndexOnActivities do
   use Ecto.Migration
 
   def change do
-    drop index(:users, [:local])
+    drop_if_exists index(:users, [:local])
   end
 end

priv/repo/migrations/20180327175831_actually_drop_local_index.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.ActuallyDropLocalIndex do
   use Ecto.Migration
 
   def change do
-    create index(:users, [:local])
+    create_if_not_exists index(:users, [:local])
     drop_if_exists index("activities", :local)
   end
 end

priv/repo/migrations/20180429094642_create_lists.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreateLists do
   use Ecto.Migration
 
   def change do
-    create table(:lists) do
+    create_if_not_exists table(:lists) do
       add :user_id, references(:users, on_delete: :delete_all)
       add :title, :string
       add :following, {:array, :string}
@@ -10,6 +10,6 @@ def change do
       timestamps()
     end
 
-    create index(:lists, [:user_id])
+    create_if_not_exists index(:lists, [:user_id])
   end
 end

priv/repo/migrations/20180516154905_create_user_trigram_index.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.CreateUserTrigramIndex do
   use Ecto.Migration
 
   def change do
-    create index(:users, ["(nickname || name) gist_trgm_ops"], name: :users_trigram_index, using: :gist)
+    create_if_not_exists index(:users, ["(nickname || name) gist_trgm_ops"], name: :users_trigram_index, using: :gist)
   end
 end

priv/repo/migrations/20180530123448_add_list_follow_index.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.AddListFollowIndex do
   use Ecto.Migration
 
   def change do
-    create index(:lists, [:following])
+    create_if_not_exists index(:lists, [:following])
   end
 end

priv/repo/migrations/20180612110515_create_user_invite_tokens.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreateUserInviteTokens do
   use Ecto.Migration
 
   def change do
-    create table(:user_invite_tokens) do
+    create_if_not_exists table(:user_invite_tokens) do
       add :token, :string
       add :used, :boolean, default: false
 

priv/repo/migrations/20180813003722_create_filters.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreateFilters do
   use Ecto.Migration
 
   def change do
-    create table(:filters) do
+    create_if_not_exists table(:filters) do
       add :user_id, references(:users, on_delete: :delete_all)
       add :filter_id, :integer
       add :hide, :boolean
@@ -14,7 +14,7 @@ def change do
       timestamps()
     end
 
-    create index(:filters, [:user_id])
-    create index(:filters, [:phrase], where: "hide = true", name: :hided_phrases_index)
+    create_if_not_exists index(:filters, [:user_id])
+    create_if_not_exists index(:filters, [:phrase], where: "hide = true", name: :hided_phrases_index)
   end
 end

priv/repo/migrations/20180829082446_add_recipients_to_and_cc_fields_to_activities.exs

@@ -7,7 +7,7 @@ def change do
       add :recipients_cc, {:array, :string}
     end
 
-    create index(:activities, [:recipients_to], using: :gin)
-    create index(:activities, [:recipients_cc], using: :gin)
+    create_if_not_exists index(:activities, [:recipients_to], using: :gin)
+    create_if_not_exists index(:activities, [:recipients_cc], using: :gin)
   end
 end

priv/repo/migrations/20180829182612_activities_add_to_cc_indices.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.ActivitiesAddToCcIndices do
   use Ecto.Migration
 
   def change do
-    create index(:activities, ["(data->'to')"], name: :activities_to_index, using: :gin)
-    create index(:activities, ["(data->'cc')"], name: :activities_cc_index, using: :gin)
+    create_if_not_exists index(:activities, ["(data->'to')"], name: :activities_to_index, using: :gin)
+    create_if_not_exists index(:activities, ["(data->'cc')"], name: :activities_cc_index, using: :gin)
   end
 end

priv/repo/migrations/20180829183529_remove_recipients_to_and_cc_fields_from_activities.exs

@@ -1,10 +1,17 @@
 defmodule Pleroma.Repo.Migrations.RemoveRecipientsToAndCcFieldsFromActivities do
   use Ecto.Migration
 
-  def change do
+  def up do
     alter table(:activities) do
       remove :recipients_to
       remove :recipients_cc
     end
   end
+
+  def down do
+    alter table(:activities) do
+      add :recipients_to, {:array, :string}
+      add :recipients_cc, {:array, :string}
+    end
+  end
 end

priv/repo/migrations/20180903114437_users_add_is_moderator_index.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.UsersAddIsModeratorIndex do
   use Ecto.Migration
 
   def change do
-    create index(:users, ["(info->'is_moderator')"], name: :users_is_moderator_index, using: :gin)
+    create_if_not_exists index(:users, ["(info->'is_moderator')"], name: :users_is_moderator_index, using: :gin)
   end
 end

priv/repo/migrations/20180918182427_create_push_subscriptions.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreatePushSubscriptions do
   use Ecto.Migration
 
   def change do
-    create table("push_subscriptions") do
+    create_if_not_exists table("push_subscriptions") do
       add :user_id, references("users", on_delete: :delete_all)
       add :token_id, references("oauth_tokens", on_delete: :delete_all)
       add :endpoint, :string
@@ -13,6 +13,6 @@ def change do
       timestamps()
     end
 
-    create index("push_subscriptions", [:user_id, :token_id], unique: true)
+    create_if_not_exists index("push_subscriptions", [:user_id, :token_id], unique: true)
   end
 end

priv/repo/migrations/20181201104428_add_uuid_extension.exs

@@ -1,7 +1,9 @@
 defmodule Pleroma.Repo.Migrations.AddUUIDExtension do
   use Ecto.Migration
 
-  def change do
+  def up do
     execute("create extension if not exists \"uuid-ossp\"")
   end
+
+  def down, do: :ok
 end

priv/repo/migrations/20181201105617_add_uui_ds_to_user_info.exs

@@ -1,7 +1,9 @@
 defmodule Pleroma.Repo.Migrations.AddUUIDsToUserInfo do
   use Ecto.Migration
 
-  def change do
+  def up do
     execute("update users set info = jsonb_set(info, '{\"id\"}', to_jsonb(uuid_generate_v4()))")
   end
+
+  def down, do: :ok
 end

priv/repo/migrations/20181206125616_add_tags_to_users.exs

@@ -6,6 +6,6 @@ def change do
       add :tags, {:array, :string}
     end
 
-    create index(:users, [:tags], using: :gin)
+    create_if_not_exists index(:users, [:tags], using: :gin)
   end
 end

priv/repo/migrations/20181218172826_users_and_activities_flake_id.exs

@@ -12,7 +12,7 @@ defmodule Pleroma.Repo.Migrations.UsersAndActivitiesFlakeId do
   #   4- update relation pkeys with the new ids
   #   5- rename the temporary column to id
   #   6- re-create the constraints
-  def change do
+  def up do
     # Old serial int ids are transformed to 128bits with extra padding.
     # The application (in `Pleroma.FlakeId`) handles theses IDs properly as integers; to keep compatibility
     # with previously issued ids.
@@ -75,6 +75,8 @@ def change do
     stop_clippy_heartbeats(clippy)
   end
 
+  def down, do: :ok
+
   defp start_clippy_heartbeats() do
     count = from(a in "activities", select: count(a.id)) |> Repo.one!
 

priv/repo/migrations/20190109152453_add_visibility_function.exs

@@ -37,12 +37,12 @@ def up do
   end
 
   def down do
-    drop(
+    drop_if_exists(
       index(:activities, ["activity_visibility(actor, recipients, data)"],
         name: :activities_visibility_index
       )
     )
 
-    execute("drop function activity_visibility(actor varchar, recipients varchar[], data jsonb)")
+    execute("drop function if exists activity_visibility(actor varchar, recipients varchar[], data jsonb)")
   end
 end

priv/repo/migrations/20190115085500_create_user_fts_index.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreateUserFtsIndex do
   use Ecto.Migration
 
   def change do
-    create index(
+    create_if_not_exists index(
              :users,
              [
                """

priv/repo/migrations/20190118074940_fix_user_trigram_index.exs

@@ -4,7 +4,7 @@ defmodule Pleroma.Repo.Migrations.FixUserTrigramIndex do
   def up do
     drop_if_exists(index(:users, [], name: :users_trigram_index))
 
-    create(
+    create_if_not_exists(
       index(:users, ["(trim(nickname || ' ' || coalesce(name, ''))) gist_trgm_ops"],
         name: :users_trigram_index,
         using: :gist
@@ -15,7 +15,7 @@ def up do
   def down do
     drop_if_exists(index(:users, [], name: :users_trigram_index))
 
-    create(
+    create_if_not_exists(
       index(:users, ["(nickname || name) gist_trgm_ops"], name: :users_trigram_index, using: :gist)
     )
   end

priv/repo/migrations/20190123092341_users_add_is_admin_index.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.UsersAddIsAdminIndex do
   use Ecto.Migration
 
   def change do
-    create(index(:users, ["(info->'is_admin')"], name: :users_is_admin_index, using: :gin))
+    create_if_not_exists(index(:users, ["(info->'is_admin')"], name: :users_is_admin_index, using: :gin))
   end
 end

priv/repo/migrations/20190123125546_create_instances.exs

@@ -2,14 +2,14 @@ defmodule Pleroma.Repo.Migrations.CreateInstances do
   use Ecto.Migration
 
   def change do
-    create table(:instances) do
+    create_if_not_exists table(:instances) do
       add :host, :string
       add :unreachable_since, :naive_datetime_usec
 
       timestamps()
     end
 
-    create unique_index(:instances, [:host])
-    create index(:instances, [:unreachable_since])
+    create_if_not_exists unique_index(:instances, [:host])
+    create_if_not_exists index(:instances, [:unreachable_since])
   end
 end

priv/repo/migrations/20190123125839_fix_info_ids.exs

@@ -1,9 +1,11 @@
 defmodule Pleroma.Repo.Migrations.FixInfoIds do
   use Ecto.Migration
 
-  def change do
+  def up do
     execute(
       "update users set info = jsonb_set(info, '{id}', to_jsonb(uuid_generate_v4())) where info->'id' is null;"
     )
   end
+
+  def down, do: :ok
 end

priv/repo/migrations/20190126160540_change_push_subscriptions_varchar.exs

@@ -1,9 +1,15 @@
 defmodule Pleroma.Repo.Migrations.ChangePushSubscriptionsVarchar do
   use Ecto.Migration
 
-  def change do
+  def up do
     alter table(:push_subscriptions) do
       modify(:endpoint, :varchar)
     end
   end
+
+  def down do
+    alter table(:push_subscriptions) do
+      modify(:endpoint, :string)
+    end
+  end
 end

priv/repo/migrations/20190204200237_add_correct_dm_index.exs

@@ -19,7 +19,7 @@ def up do
   end
 
   def down do
-    drop(
+    drop_if_exists(
       index(:activities, ["activity_visibility(actor, recipients, data)", "id DESC"],
         name: :activities_visibility_index,
         concurrently: true,

priv/repo/migrations/20190205114625_create_thread_mutes.exs

@@ -2,11 +2,11 @@ defmodule Pleroma.Repo.Migrations.CreateThreadMutes do
   use Ecto.Migration
 
   def change do
-    create table(:thread_mutes) do
+    create_if_not_exists table(:thread_mutes) do
       add :user_id, references(:users, type: :uuid, on_delete: :delete_all)
       add :context, :string
     end
     
-    create unique_index(:thread_mutes, [:user_id, :context], name: :unique_index)
+    create_if_not_exists unique_index(:thread_mutes, [:user_id, :context], name: :unique_index)
   end
 end

priv/repo/migrations/20190315101315_create_registrations.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreateRegistrations do
   use Ecto.Migration
 
   def change do
-    create table(:registrations, primary_key: false) do
+    create_if_not_exists table(:registrations, primary_key: false) do
       add :id, :uuid, primary_key: true
       add :user_id, references(:users, type: :uuid, on_delete: :delete_all)
       add :provider, :string
@@ -12,7 +12,7 @@ def change do
       timestamps()
     end
 
-    create unique_index(:registrations, [:provider, :uid])
-    create unique_index(:registrations, [:user_id, :provider, :uid])
+    create_if_not_exists unique_index(:registrations, [:provider, :uid])
+    create_if_not_exists unique_index(:registrations, [:user_id, :provider, :uid])
   end
 end

priv/repo/migrations/20190325185009_create_notification_id_index.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.CreateNotificationIdIndex do
   use Ecto.Migration
 
   def change do
-  create index(:notifications, ["id desc nulls last"])
+    create_if_not_exists index(:notifications, ["id desc nulls last"])
   end
 end

priv/repo/migrations/20190328053912_create_scheduled_activities.exs

@@ -2,7 +2,7 @@ defmodule Pleroma.Repo.Migrations.CreateScheduledActivities do
   use Ecto.Migration
 
   def change do
-    create table(:scheduled_activities) do
+    create_if_not_exists table(:scheduled_activities) do
       add(:user_id, references(:users, type: :uuid, on_delete: :delete_all))
       add(:scheduled_at, :naive_datetime, null: false)
       add(:params, :map, null: false)
@@ -10,7 +10,7 @@ def change do
       timestamps()
     end
 
-    create(index(:scheduled_activities, [:scheduled_at]))
-    create(index(:scheduled_activities, [:user_id]))
+    create_if_not_exists(index(:scheduled_activities, [:scheduled_at]))
+    create_if_not_exists(index(:scheduled_activities, [:user_id]))
   end
 end

priv/repo/migrations/20190403131720_add_oauth_token_indexes.exs

@@ -2,8 +2,8 @@ defmodule Pleroma.Repo.Migrations.AddOauthTokenIndexes do
   use Ecto.Migration
 
   def change do
-    create(unique_index(:oauth_tokens, [:token]))
-    create(index(:oauth_tokens, [:app_id]))
-    create(index(:oauth_tokens, [:user_id]))
+    create_if_not_exists(unique_index(:oauth_tokens, [:token]))
+    create_if_not_exists(index(:oauth_tokens, [:app_id]))
+    create_if_not_exists(index(:oauth_tokens, [:user_id]))
   end
 end

priv/repo/migrations/20190405160700_add_index_on_subscribers.exs

@@ -1,6 +1,6 @@
 defmodule Pleroma.Repo.Migrations.AddIndexOnSubscribers do
   use Ecto.Migration
-  
+
   @disable_ddl_transaction true
   def change do
     create index(:users, ["(info->'subscribers')"], name: :users_subscribers_index, using: :gin, concurrently: true)

priv/repo/migrations/20190408123347_create_conversations.exs

@@ -6,12 +6,12 @@ defmodule Pleroma.Repo.Migrations.CreateConversations do
   use Ecto.Migration
 
   def change do
-    create table(:conversations) do
+    create_if_not_exists table(:conversations) do
       add(:ap_id, :string, null: false)
       timestamps()
     end
 
-    create table(:conversation_participations) do
+    create_if_not_exists table(:conversation_participations) do
       add(:user_id, references(:users, type: :uuid, on_delete: :delete_all))
       add(:conversation_id, references(:conversations, on_delete: :delete_all))
       add(:read, :boolean, default: false)
@@ -19,8 +19,8 @@ def change do
       timestamps()
     end
 
-    create index(:conversation_participations, [:conversation_id])
-    create unique_index(:conversation_participations, [:user_id, :conversation_id])
-    create unique_index(:conversations, [:ap_id])
+    create_if_not_exists index(:conversation_participations, [:conversation_id])
+    create_if_not_exists unique_index(:conversation_participations, [:user_id, :conversation_id])
+    create_if_not_exists unique_index(:conversations, [:ap_id])
   end
 end

priv/repo/migrations/20190410152859_add_participation_updated_at_index.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.AddParticipationUpdatedAtIndex do
   use Ecto.Migration
 
   def change do
-    create index(:conversation_participations, ["updated_at desc"])
+    create_if_not_exists index(:conversation_participations, ["updated_at desc"])
   end
 end

priv/repo/migrations/20190411094120_add_index_on_user_info_deactivated.exs

@@ -2,6 +2,6 @@ defmodule Pleroma.Repo.Migrations.AddIndexOnUserInfoDeactivated do
   use Ecto.Migration
 
   def change do
-    create(index(:users, ["(info->'deactivated')"], name: :users_deactivated_index, using: :gin))
+    create_if_not_exists(index(:users, ["(info->'deactivated')"], name: :users_deactivated_index, using: :gin))
   end
 end