Merge remote-tracking branch 'remotes/origin/develop' into 1560-non-federating-instances-routes-restrictions

.gitignore

@@ -47,3 +47,5 @@ docs/generated_config.md
 .idea
 pleroma.iml
 
+# asdf
+.tool-versions

CHANGELOG.md

@@ -4,6 +4,9 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
+### Security
+- Mastodon API: Fix being able to request enourmous amount of statuses in timelines leading to DoS. Now limited to 40 per request.
+
 ### Removed
 - **Breaking**: Removed 1.0+ deprecated configurations `Pleroma.Upload, :strip_exif` and `:instance, :dedupe_media`
 - **Breaking**: OStatus protocol support
@@ -56,6 +59,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Admin API: Render whole status in grouped reports
 - Mastodon API: User timelines will now respect blocks, unless you are getting the user timeline of somebody you blocked (which would be empty otherwise).
 - Mastodon API: Favoriting / Repeating a post multiple times will now return the identical response every time. Before, executing that action twice would return an error ("already favorited") on the second try.
+- Mastodon API: Limit timeline requests to 3 per timeline per 500ms per user/ip by default.
 </details>
 
 ### Added
@@ -75,6 +79,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - A new users admin digest email
 - OAuth: admin scopes support (relevant setting: `[:auth, :enforce_oauth_admin_scope_usage]`).
 - Add an option `authorized_fetch_mode` to require HTTP signatures for AP fetches.
+- ActivityPub: support for `replies` collection (output for outgoing federation & fetching on incoming federation).
+- Mix task to refresh counter cache (`mix pleroma.refresh_counter_cache`)
 <details>
   <summary>API Changes</summary>
 
@@ -102,6 +108,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Configuration: `feed` option for user atom feed.
 - Pleroma API: Add Emoji reactions
 - Admin API: Add `/api/pleroma/admin/instances/:instance/statuses` - lists all statuses from a given instance
+- Admin API: Add `/api/pleroma/admin/users/:nickname/statuses` - lists all statuses from a given user
 - Admin API: `PATCH /api/pleroma/users/confirm_email` to confirm email for multiple users, `PATCH /api/pleroma/users/resend_confirmation_email` to resend confirmation email for multiple users
 - ActivityPub: Configurable `type` field of the actors.
 - Mastodon API: `/api/v1/accounts/:id` has `source/pleroma/actor_type` field.
@@ -117,6 +124,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Tag feed: `/tags/:tag.rss` - list public statuses by hashtag.
 - Mastodon API: Add `reacted` property to `emoji_reactions`
 - Pleroma API: Add reactions for a single emoji.
+- ActivityPub: `[:activitypub, :note_replies_output_limit]` setting sets the number of note self-replies to output on outgoing federation.
+- Admin API: `GET /api/pleroma/admin/stats` to get status count by visibility scope
+- Admin API: `GET /api/pleroma/admin/statuses` - list all statuses (accepts `godmode` and `local_only`)
 </details>
 
 ### Fixed

config/config.exs

@@ -328,6 +328,7 @@ config :pleroma, :activitypub,
   unfollow_blocked: true,
   outgoing_blocks: true,
   follow_handshake_timeout: 500,
+  note_replies_output_limit: 5,
   sign_object_fetches: true,
   authorized_fetch_mode: false
 
@@ -401,6 +402,8 @@ config :phoenix, :format_encoders, json: Jason
 
 config :phoenix, :json_library, Jason
 
+config :phoenix, :filter_parameters, ["password", "confirm"]
+
 config :pleroma, :gopher,
   enabled: false,
   ip: {0, 0, 0, 0},
@@ -483,6 +486,7 @@ config :pleroma, Oban,
     transmogrifier: 20,
     scheduled_activities: 10,
     background: 5,
+    remote_fetcher: 2,
     attachments_cleanup: 5,
     new_users_digest: 1
   ],
@@ -595,6 +599,7 @@ config :http_signatures,
 
 config :pleroma, :rate_limit,
   authentication: {60_000, 15},
+  timeline: {500, 3},
   search: [{1000, 10}, {1000, 30}],
   app_account_creation: {1_800_000, 25},
   relations_actions: {10_000, 10},

config/description.exs

@@ -662,7 +662,7 @@ config :pleroma, :config_description, [
         label: "Fed. incoming replies max depth",
         type: :integer,
         description:
-          "Max. depth of reply-to activities fetching on incoming federation, to prevent out-of-memory situations while" <>
+          "Max. depth of reply-to and reply 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.",
         suggestions: [
           100
@@ -1615,160 +1615,6 @@ config :pleroma, :config_description, [
       }
     ]
   },
-  %{
-    group: :pleroma,
-    key: Pleroma.Web.Endpoint,
-    type: :group,
-    description: "Phoenix endpoint configuration",
-    children: [
-      %{
-        key: :http,
-        label: "HTTP",
-        type: {:keyword, :integer, :tuple},
-        description: "http protocol configuration",
-        suggestions: [
-          port: 8080,
-          ip: {127, 0, 0, 1}
-        ],
-        children: [
-          %{
-            key: :dispatch,
-            type: {:list, :tuple},
-            description: "dispatch settings",
-            suggestions: [
-              {:_,
-               [
-                 {"/api/v1/streaming", Pleroma.Web.MastodonAPI.WebsocketHandler, []},
-                 {"/websocket", Phoenix.Endpoint.CowboyWebSocket,
-                  {Phoenix.Transports.WebSocket,
-                   {Pleroma.Web.Endpoint, Pleroma.Web.UserSocket, websocket_config}}},
-                 {:_, Phoenix.Endpoint.Cowboy2Handler, {Pleroma.Web.Endpoint, []}}
-               ]}
-              # end copied from config.exs
-            ]
-          },
-          %{
-            key: :ip,
-            label: "IP",
-            type: :tuple,
-            description: "ip",
-            suggestions: [
-              {0, 0, 0, 0}
-            ]
-          },
-          %{
-            key: :port,
-            type: :integer,
-            description: "port",
-            suggestions: [
-              2020
-            ]
-          }
-        ]
-      },
-      %{
-        key: :url,
-        label: "URL",
-        type: {:keyword, :string, :integer},
-        description: "configuration for generating urls",
-        suggestions: [
-          host: "example.com",
-          port: 2020,
-          scheme: "https"
-        ],
-        children: [
-          %{
-            key: :host,
-            type: :string,
-            description: "Host",
-            suggestions: [
-              "example.com"
-            ]
-          },
-          %{
-            key: :port,
-            type: :integer,
-            description: "port",
-            suggestions: [
-              2020
-            ]
-          },
-          %{
-            key: :scheme,
-            type: :string,
-            description: "Scheme",
-            suggestions: [
-              "https",
-              "https"
-            ]
-          }
-        ]
-      },
-      %{
-        key: :instrumenters,
-        type: {:list, :module},
-        suggestions: [Pleroma.Web.Endpoint.Instrumenter]
-      },
-      %{
-        key: :protocol,
-        type: :string,
-        suggestions: ["https"]
-      },
-      %{
-        key: :secret_key_base,
-        type: :string,
-        suggestions: ["aK4Abxf29xU9TTDKre9coZPUgevcVCFQJe/5xP/7Lt4BEif6idBIbjupVbOrbKxl"]
-      },
-      %{
-        key: :signing_salt,
-        type: :string,
-        suggestions: ["CqaoopA2"]
-      },
-      %{
-        key: :render_errors,
-        type: :keyword,
-        suggestions: [view: Pleroma.Web.ErrorView, accepts: ~w(json)],
-        children: [
-          %{
-            key: :view,
-            type: :module,
-            suggestions: [Pleroma.Web.ErrorView]
-          },
-          %{
-            key: :accepts,
-            type: {:list, :string},
-            suggestions: ["json"]
-          }
-        ]
-      },
-      %{
-        key: :pubsub,
-        type: :keyword,
-        suggestions: [name: Pleroma.PubSub, adapter: Phoenix.PubSub.PG2],
-        children: [
-          %{
-            key: :name,
-            type: :module,
-            suggestions: [Pleroma.PubSub]
-          },
-          %{
-            key: :adapter,
-            type: :module,
-            suggestions: [Phoenix.PubSub.PG2]
-          }
-        ]
-      },
-      %{
-        key: :secure_cookie_flag,
-        type: :boolean
-      },
-      %{
-        key: :extra_cookie_attrs,
-        type: {:list, :string},
-        suggestions: ["SameSite=Lax"]
-      }
-    ]
-  },
   %{
     group: :pleroma,
     key: :activitypub,
@@ -1790,6 +1636,12 @@ config :pleroma, :config_description, [
         type: :boolean,
         description: "Sign object fetches with HTTP signatures"
       },
+      %{
+        key: :note_replies_output_limit,
+        type: :integer,
+        description:
+          "The number of Note replies' URIs to be included with outgoing federation (`5` to match Mastodon hardcoded value, `0` to disable the output)."
+      },
       %{
         key: :follow_handshake_timeout,
         type: :integer,
@@ -2051,6 +1903,18 @@ config :pleroma, :config_description, [
             suggestions: [50]
           }
         ]
+      },
+      %{
+        key: :crontab,
+        type: {:list, :tuple},
+        description: "Settings for cron background jobs",
+        suggestions: [
+          {"0 0 * * *", Pleroma.Workers.Cron.ClearOauthTokenWorker},
+          {"0 * * * *", Pleroma.Workers.Cron.StatsWorker},
+          {"* * * * *", Pleroma.Workers.Cron.PurgeExpiredActivitiesWorker},
+          {"0 0 * * 0", Pleroma.Workers.Cron.DigestEmailsWorker},
+          {"0 0 * * *", Pleroma.Workers.Cron.NewUsersDigestWorker}
+        ]
       }
     ]
   },
@@ -2588,19 +2452,6 @@ config :pleroma, :config_description, [
       }
     ]
   },
-  %{
-    group: :pleroma,
-    key: :database,
-    type: :group,
-    description: "Database related settings",
-    children: [
-      %{
-        key: :rum_enabled,
-        type: :boolean,
-        description: "If RUM indexes should be used. Default: disabled"
-      }
-    ]
-  },
   %{
     group: :pleroma,
     key: :rate_limit,
@@ -2614,6 +2465,12 @@ config :pleroma, :config_description, [
         description: "For the search requests (account & status search etc.)",
         suggestions: [{1000, 10}, [{10_000, 10}, {10_000, 50}]]
       },
+      %{
+        key: :timeline,
+        type: [:tuple, {:list, :tuple}],
+        description: "For requests to timelines (each timeline has it's own limiter)",
+        suggestions: [{1000, 10}, [{10_000, 10}, {10_000, 50}]]
+      },
       %{
         key: :app_account_creation,
         type: [:tuple, {:list, :tuple}],
@@ -2764,20 +2621,6 @@ config :pleroma, :config_description, [
       }
     ]
   },
-  %{
-    group: :prometheus,
-    key: Pleroma.Web.Endpoint.MetricsExporter,
-    type: :group,
-    description: "Prometheus settings",
-    children: [
-      %{
-        key: :path,
-        type: :string,
-        description: "API endpoint with metrics",
-        suggestions: ["/api/pleroma/app_metrics"]
-      }
-    ]
-  },
   %{
     group: :http_signatures,
     type: :group,
@@ -3045,7 +2888,7 @@ config :pleroma, :config_description, [
     group: :pleroma,
     key: :feed,
     type: :group,
-    description: "Configure feed rendering.",
+    description: "Configure feed rendering",
     children: [
       %{
         key: :post_title,
@@ -3095,7 +2938,7 @@ config :pleroma, :config_description, [
     group: :pleroma,
     key: :modules,
     type: :group,
-    description: "Custom Runtime Modules.",
+    description: "Custom Runtime Modules",
     children: [
       %{
         key: :runtime_dir,
@@ -3106,14 +2949,21 @@ config :pleroma, :config_description, [
   },
   %{
     group: :pleroma,
+    key: :streamer,
     type: :group,
-    description: "Allow instance configuration from database.",
+    description: "Settings for notifications streamer",
     children: [
       %{
-        key: :configurable_from_database,
+        key: :workers,
-        type: :boolean,
+        type: :integer,
-        description:
+        description: "Number of workers to send notifications.",
-          "Allow transferring configuration to DB with the subsequent customization from Admin api. Default: disabled"
+        suggestions: [3]
+      },
+      %{
+        key: :overflow_workers,
+        type: :integer,
+        description: "Maximum number of workers created if pool is empty.",
+        suggestions: [2]
       }
     ]
   }

config/test.exs

@@ -74,11 +74,7 @@ config :pleroma, Pleroma.ScheduledActivity,
   total_user_limit: 3,
   enabled: false
 
-config :pleroma, :rate_limit,
+config :pleroma, :rate_limit, %{}
-  search: [{1000, 30}, {1000, 30}],
-  app_account_creation: {10_000, 5},
-  password_reset: {1000, 30},
-  ap_routes: nil
 
 config :pleroma, :http_security, report_uri: "https://endpoint.com"
 

docs/API/admin_api.md

@@ -260,10 +260,24 @@ Note: Available `:permission_group` is currently moderator and admin. 404 is ret
   - `nickname` or `id`
   - *optional* `page_size`: number of statuses to return (default is `20`)
   - *optional* `godmode`: `true`/`false` – allows to see private statuses
+  - *optional* `with_reblogs`: `true`/`false` – allows to see reblogs (default is false)
 - Response:
   - On failure: `Not found`
   - On success: JSON array of user's latest statuses
 
+## `GET /api/pleroma/admin/instances/:instance/statuses`
+
+### Retrive instance's latest statuses
+
+- Params:
+  - `instance`: instance name
+  - *optional* `page_size`: number of statuses to return (default is `20`)
+  - *optional* `godmode`: `true`/`false` – allows to see private statuses
+  - *optional* `with_reblogs`: `true`/`false` – allows to see reblogs (default is false)
+- Response:
+  - On failure: `Not found`
+  - On success: JSON array of instance's latest statuses
+
 ## `POST /api/pleroma/admin/relay`
 
 ### Follow a Relay
@@ -939,3 +953,20 @@ Loads json generated from `config/descriptions.exs`.
 - Params:
   - `nicknames`
 - Response: Array of user nicknames
+
+## `GET /api/pleroma/admin/stats`
+
+### Stats
+
+- Response:
+
+```json
+{
+  "status_visibility": {
+    "direct": 739,
+    "private": 9,
+    "public": 17,
+    "unlisted": 14
+  }
+}
+```

docs/configuration/cheatsheet.md

@@ -2,9 +2,11 @@
 
 This is a cheat sheet for Pleroma configuration file, any setting possible to configure should be listed here.
 
-Pleroma configuration works by first importing the base config (`config/config.exs` on source installs, compiled-in on OTP releases), then overriding it by the environment config (`config/$MIX_ENV.exs` on source installs, N/A to OTP releases) and then overriding it by user config (`config/$MIX_ENV.secret.exs` on source installs, typically `/etc/pleroma/config.exs` on OTP releases).
+For OTP installations the configuration is typically stored in `/etc/pleroma/config.exs`.
 
-You shouldn't edit the base config directly to avoid breakages and merge conflicts, but it can be used as a reference if you don't understand how an option is supposed to be formatted, the latest version of it can be viewed [here](https://git.pleroma.social/pleroma/pleroma/blob/develop/config/config.exs).
+For from source installations Pleroma configuration works by first importing the base config `config/config.exs`, then overriding it by the environment config `config/$MIX_ENV.exs` and then overriding it by user config `config/$MIX_ENV.secret.exs`. In from source installations you should always make the changes to the user config and NEVER to the base config to avoid breakages and merge conflicts. So for production you change/add configuration to `config/prod.secret.exs`.
+
+To add configuration to your config file, you can copy it from the base config. The latest version of it can be viewed [here](https://git.pleroma.social/pleroma/pleroma/blob/develop/config/config.exs). You can also use this file if you don't know how an option is supposed to be formatted.
 
 ## :instance
 * `name`: The instance’s name.
@@ -150,8 +152,12 @@ config :pleroma, :mrf_user_allowlist,
 * `authorized_fetch_mode`: Require HTTP signatures for AP fetches
 
 ### :fetch_initial_posts
-* `enabled`: if enabled, when a new user is federated with, fetch some of their latest posts
+
-* `pages`: the amount of pages to fetch
+!!! warning
+    Be careful with this setting, fetching posts may lead to new users being discovered whose posts will then also be fetched. This can lead to serious load on your instance and database.
+
+* `enabled`: If enabled, when a new user is discovered by your instance, fetch some of their latest posts.
+* `pages`: The amount of pages to fetch
 
 ## Pleroma.ScheduledActivity
 
@@ -343,6 +349,7 @@ Means that:
 Supported rate limiters:
 
 * `:search` - Account/Status search.
+* `:timeline` - Timeline requests (each timeline has it's own limiter).
 * `:app_account_creation` - Account registration from the API.
 * `:relations_actions` - Following/Unfollowing in general.
 * `:relation_id_action` - Following/Unfollowing for a specific user.

docs/configuration/howto_theming_your_instance.md

@@ -0,0 +1,74 @@
+# Theming your instance
+
+To add a custom theme to your instance, you'll first need to get a custom theme, upload it to the server, make it available to the instance and eventually you can set it as default.
+
+## Getting a custom theme
+
+### Create your own theme
+
+* You can create your own theme using the Pleroma FE by going to settings (gear on the top right) and choose the Theme tab. Here you have the options to create a personal theme.
+* To download your theme, you can do Save preset
+* If you want to upload a theme to customise it further, you can upload it using Load preset
+
+This will only save the theme for you personally. To make it available to the whole instance, you'll need to upload it to the server.
+
+### Get an existing theme
+
+* You can download a theme from another instance by going to that instance, go to settings and make sure you have the theme selected that you want. Then you can do Save preset to download it.
+* You can also find and download custom themes at <https://plthemes.vulpes.one/>
+
+## Adding the custom theme to the instance
+
+### Upload the theme to the server
+
+Themes can be found in the [static directory](static_dir.md). Create `STATIC-DIR/static/themes/` if needed and copy your theme there. Next you need to add an entry for your theme to `STATIC-DIR/static/styles.json`. If you use a from source installation, you'll first need to copy the file from `priv/static/static/styles.json`.
+
+Example of `styles.json` where we add our own `my-awesome-theme.json`
+```json
+{
+  "pleroma-dark": [ "Pleroma Dark", "#121a24", "#182230", "#b9b9ba", "#d8a070", "#d31014", "#0fa00f", "#0095ff", "#ffa500" ],
+  "pleroma-light": [ "Pleroma Light", "#f2f4f6", "#dbe0e8", "#304055", "#f86f0f", "#d31014", "#0fa00f", "#0095ff", "#ffa500" ],
+  "classic-dark": [ "Classic Dark", "#161c20", "#282e32", "#b9b9b9", "#baaa9c", "#d31014", "#0fa00f", "#0095ff", "#ffa500" ],
+  "bird": [ "Bird", "#f8fafd", "#e6ecf0", "#14171a", "#0084b8", "#e0245e", "#17bf63", "#1b95e0", "#fab81e"],
+  "ir-black": [ "Ir Black", "#000000", "#242422", "#b5b3aa", "#ff6c60", "#FF6C60", "#A8FF60", "#96CBFE", "#FFFFB6" ],
+  "monokai": [ "Monokai", "#272822", "#383830", "#f8f8f2", "#f92672", "#F92672", "#a6e22e", "#66d9ef", "#f4bf75" ],
+
+  "redmond-xx": "/static/themes/redmond-xx.json",
+  "redmond-xx-se": "/static/themes/redmond-xx-se.json",
+  "redmond-xxi": "/static/themes/redmond-xxi.json",
+  "breezy-dark": "/static/themes/breezy-dark.json",
+  "breezy-light": "/static/themes/breezy-light.json",
+  "mammal": "/static/themes/mammal.json",
+  "my-awesome-theme": "/static/themes/my-awesome-theme.json"
+}
+```
+
+Now you'll already be able to select the theme in Pleroma FE from the drop-down. You don't need to restart Pleroma because we only changed static served files. You may need to refresh the page in your browser. You'll notice however that the theme doesn't have a name, it's just an empty entry in the drop-down.
+
+### Give the theme a name
+
+When you open one of the themes that ship with Pleroma, you'll notice that the json has a `"name"` key. Add a key-value pair to your theme where the key name is `"name"` and the value the name you want to give your theme. After this you can refresh te page in your browser and the name should be visible in the drop-down.
+
+Example of `my-awesome-theme.json` where we add the name "My Awesome Theme"
+```json
+{
+  "_pleroma_theme_version": 2,
+  "name": "My Awesome Theme",
+  "theme": {}
+}
+```
+
+### Set as default theme
+
+Now we can set the new theme as default in the [Pleroma FE configuration](General-tips-for-customizing-Pleroma-FE.md).
+
+Example of adding the new theme in the back-end config files
+```elixir
+config :pleroma, :frontend_configurations,
+  pleroma_fe: %{
+    theme: "my-awesome-theme"
+  }
+```
+
+If you added it in the back-end configuration file, you'll need to restart your instance for the changes to take effect. If you don't see the changes, it's probably because the browser has cached the previous theme. In that case you'll want to clear browser caches. Alternatively you can use a private/incognito window just to see the changes.
+

docs/configuration/i2p.md

@@ -123,7 +123,7 @@ In addition to that, replace the existing nginx config's contents with the examp
 
 If not an I2P-only instance, add the nginx config below to your existing config at `/etc/nginx/sites-enabled/pleroma.nginx`.
 
-And for both cases, disable CSP in Pleroma's config (STS is disabled by default) so you can define those yourself seperately from the clearnet (if your instance is also on the clearnet).
+And for both cases, disable CSP in Pleroma's config (STS is disabled by default) so you can define those yourself separately from the clearnet (if your instance is also on the clearnet).
 Copy the following into the `config/prod.secret.exs` in your Pleroma folder (/home/pleroma/pleroma/):
 ```
 config :pleroma, :http_security,

docs/configuration/onion_federation.md

@@ -75,7 +75,7 @@ If not a Tor-only instance,
 add the nginx config below to your existing config at `/etc/nginx/sites-enabled/pleroma.nginx`.
 
 ---
-For both cases, disable CSP in Pleroma's config (STS is disabled by default) so you can define those yourself seperately from the clearnet (if your instance is also on the clearnet).
+For both cases, disable CSP in Pleroma's config (STS is disabled by default) so you can define those yourself separately from the clearnet (if your instance is also on the clearnet).
 Copy the following into the `config/prod.secret.exs` in your Pleroma folder (/home/pleroma/pleroma/):
 ```
 config :pleroma, :http_security,

docs/introduction.md

@@ -41,7 +41,7 @@ On the top right you will also see a wrench icon. This opens your personal setti
 This is where the interesting stuff happens!
 Depending on the timeline you will see different statuses, but each status has a standard structure:
 
-- Profile pic, name and link to profile. An optional left-arrow if it's a reply to another status (hovering will reveal the replied-to status). Clicking on the profile pic will uncollapse the user's profile.
+- Profile pic, name and link to profile. An optional left-arrow if it's a reply to another status (hovering will reveal the reply-to status). Clicking on the profile pic will uncollapse the user's profile.
 - A `+` button on the right allows you to Expand/Collapse an entire discussion thread. It also updates in realtime!
 - An arrow icon allows you to open the status on the instance where it's originating from.
 - The text of the status, including mentions and attachements. If you click on a mention, it will automatically open the profile page of that person.

lib/mix/tasks/pleroma/config.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Mix.Tasks.Pleroma.Config do

lib/mix/tasks/pleroma/emoji.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Mix.Tasks.Pleroma.Emoji do
@@ -186,11 +186,7 @@ defmodule Mix.Tasks.Pleroma.Emoji do
 
     tmp_pack_dir = Path.join(System.tmp_dir!(), "emoji-pack-#{name}")
 
-    {:ok, _} =
+    {:ok, _} = :zip.unzip(binary_archive, cwd: String.to_charlist(tmp_pack_dir))
-      :zip.unzip(
-        binary_archive,
-        cwd: tmp_pack_dir
-      )
 
     emoji_map = Pleroma.Emoji.Loader.make_shortcode_to_file_map(tmp_pack_dir, exts)
 

lib/mix/tasks/pleroma/instance.ex

@@ -1,11 +1,13 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Mix.Tasks.Pleroma.Instance do
   use Mix.Task
   import Mix.Pleroma
 
+  alias Pleroma.Config
+
   @shortdoc "Manages Pleroma instance"
   @moduledoc File.read!("docs/administration/CLI_tasks/instance.md")
 
@@ -63,7 +65,8 @@ defmodule Mix.Tasks.Pleroma.Instance do
         get_option(
           options,
           :instance_name,
-          "What is the name of your instance? (e.g. Pleroma/Soykaf)"
+          "What is the name of your instance? (e.g. The Corndog Emporium)",
+          domain
         )
 
       email = get_option(options, :admin_email, "What is your admin email address?")
@@ -153,6 +156,8 @@ defmodule Mix.Tasks.Pleroma.Instance do
           Pleroma.Config.get([:instance, :static_dir])
         )
 
+      Config.put([:instance, :static_dir], static_dir)
+
       secret = :crypto.strong_rand_bytes(64) |> Base.encode64() |> binary_part(0, 64)
       jwt_secret = :crypto.strong_rand_bytes(64) |> Base.encode64() |> binary_part(0, 64)
       signing_salt = :crypto.strong_rand_bytes(8) |> Base.encode64() |> binary_part(0, 8)
@@ -202,8 +207,14 @@ defmodule Mix.Tasks.Pleroma.Instance do
       write_robots_txt(indexable, template_dir)
 
       shell_info(
-        "\n All files successfully written! Refer to the installation instructions for your platform for next steps"
+        "\n All files successfully written! Refer to the installation instructions for your platform for next steps."
       )
+
+      if db_configurable? do
+        shell_info(
+          " Please transfer your config to the database after running database migrations. Refer to \"Transfering the config to/from the database\" section of the docs for more information."
+        )
+      end
     else
       shell_error(
         "The task would have overwritten the following files:\n" <>

lib/mix/tasks/pleroma/refresh_counter_cache.ex

@@ -0,0 +1,46 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Mix.Tasks.Pleroma.RefreshCounterCache do
+  @shortdoc "Refreshes counter cache"
+
+  use Mix.Task
+
+  alias Pleroma.Activity
+  alias Pleroma.CounterCache
+  alias Pleroma.Repo
+
+  require Logger
+  import Ecto.Query
+
+  def run([]) do
+    Mix.Pleroma.start_pleroma()
+
+    ["public", "unlisted", "private", "direct"]
+    |> Enum.each(fn visibility ->
+      count = status_visibility_count_query(visibility)
+      name = "status_visibility_#{visibility}"
+      CounterCache.set(name, count)
+      Mix.Pleroma.shell_info("Set #{name} to #{count}")
+    end)
+
+    Mix.Pleroma.shell_info("Done")
+  end
+
+  defp status_visibility_count_query(visibility) do
+    Activity
+    |> where(
+      [a],
+      fragment(
+        "activity_visibility(?, ?, ?) = ?",
+        a.actor,
+        a.recipients,
+        a.data,
+        ^visibility
+      )
+    )
+    |> where([a], fragment("(? ->> 'type'::text) = 'Create'", a.data))
+    |> Repo.aggregate(:count, :id, timeout: :timer.minutes(30))
+  end
+end

lib/mix/tasks/pleroma/robotstxt.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Mix.Tasks.Pleroma.RobotsTxt do

lib/mix/tasks/pleroma/user.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Mix.Tasks.Pleroma.User do
@@ -100,8 +100,7 @@ defmodule Mix.Tasks.Pleroma.User do
       User.perform(:delete, user)
       shell_info("User #{nickname} deleted.")
     else
-      _ ->
+      _ -> shell_error("No local user #{nickname}")
-        shell_error("No local user #{nickname}")
     end
   end
 

lib/pleroma/activity.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Activity do
@@ -310,7 +310,7 @@ defmodule Pleroma.Activity do
 
   def restrict_deactivated_users(query) do
     deactivated_users =
-      from(u in User.Query.build(deactivated: true), select: u.ap_id)
+      from(u in User.Query.build(%{deactivated: true}), select: u.ap_id)
       |> Repo.all()
 
     Activity.Queries.exclude_authors(query, deactivated_users)

lib/pleroma/activity/queries.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Activity.Queries do
@@ -7,7 +7,7 @@ defmodule Pleroma.Activity.Queries do
   Contains queries for Activity.
   """
 
-  import Ecto.Query, only: [from: 2]
+  import Ecto.Query, only: [from: 2, where: 3]
 
   @type query :: Ecto.Queryable.t() | Activity.t()
 
@@ -30,7 +30,7 @@ defmodule Pleroma.Activity.Queries do
     )
   end
 
-  @spec by_author(query, String.t()) :: query
+  @spec by_author(query, User.t()) :: query
   def by_author(query \\ Activity, %User{ap_id: ap_id}) do
     from(a in query, where: a.actor == ^ap_id)
   end
@@ -63,6 +63,22 @@ defmodule Pleroma.Activity.Queries do
     )
   end
 
+  @spec by_object_in_reply_to_id(query, String.t(), keyword()) :: query
+  def by_object_in_reply_to_id(query, in_reply_to_id, opts \\ []) do
+    query =
+      if opts[:skip_preloading] do
+        Activity.with_joined_object(query)
+      else
+        Activity.with_preloaded_object(query)
+      end
+
+    where(
+      query,
+      [activity, object: o],
+      fragment("(?)->>'inReplyTo' = ?", o.data, ^to_string(in_reply_to_id))
+    )
+  end
+
   @spec by_type(query, String.t()) :: query
   def by_type(query \\ Activity, activity_type) do
     from(

lib/pleroma/activity/search.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Activity.Search do

lib/pleroma/activity_expiration.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.ActivityExpiration do

lib/pleroma/application.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Application do

lib/pleroma/captcha/captcha.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Captcha do
@@ -50,7 +50,7 @@ defmodule Pleroma.Captcha do
       token = new_captcha[:token]
       secret = KeyGenerator.generate(secret_key_base, token <> "_encrypt")
       sign_secret = KeyGenerator.generate(secret_key_base, token <> "_sign")
-      # Basicallty copy what Phoenix.Token does here, add the time to
+      # Basically copy what Phoenix.Token does here, add the time to
       # the actual data and make it a binary to then encrypt it
       encrypted_captcha_answer =
         %{
@@ -62,7 +62,7 @@ defmodule Pleroma.Captcha do
 
       {
         :reply,
-        # Repalce the answer with the encrypted answer
+        # Replace the answer with the encrypted answer
         %{new_captcha | answer_data: encrypted_captcha_answer},
         state
       }
@@ -82,7 +82,8 @@ defmodule Pleroma.Captcha do
     valid_if_after = DateTime.subtract!(DateTime.now_utc(), seconds_valid)
 
     result =
-      with {:ok, data} <- MessageEncryptor.decrypt(answer_data, secret, sign_secret),
+      with false <- is_nil(answer_data),
+           {:ok, data} <- MessageEncryptor.decrypt(answer_data, secret, sign_secret),
            %{at: at, answer_data: answer_md5} <- :erlang.binary_to_term(data) do
         try do
           if DateTime.before?(at, valid_if_after),

lib/pleroma/captcha/native.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Captcha.Native do
@@ -10,8 +10,8 @@ defmodule Pleroma.Captcha.Native do
   @impl Service
   def new do
     case Captcha.get() do
-      {:timeout} ->
+      :error ->
-        %{error: dgettext("errors", "Captcha timeout")}
+        %{error: dgettext("errors", "Captcha error")}
 
       {:ok, answer_data, img_binary} ->
         %{

lib/pleroma/config/config_db.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.ConfigDB do

lib/pleroma/config/holder.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Config.Holder do

lib/pleroma/config/loader.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Config.Loader do

lib/pleroma/config/transfer_task.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Config.TransferTask do

lib/pleroma/conversation/participation.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Conversation.Participation do
@@ -133,10 +133,8 @@ defmodule Pleroma.Conversation.Participation do
       [user.id | user_ids]
       |> Enum.uniq()
       |> Enum.reduce([], fn user_id, acc ->
-        case FlakeId.Ecto.CompatType.dump(user_id) do
+        {:ok, user_id} = FlakeId.Ecto.CompatType.dump(user_id)
-          {:ok, user_id} -> [user_id | acc]
+        [user_id | acc]
-          _ -> acc
-        end
       end)
 
     conversation_subquery =

lib/pleroma/counter_cache.ex

@@ -0,0 +1,41 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.CounterCache do
+  alias Pleroma.CounterCache
+  alias Pleroma.Repo
+  use Ecto.Schema
+  import Ecto.Changeset
+  import Ecto.Query
+
+  schema "counter_cache" do
+    field(:name, :string)
+    field(:count, :integer)
+  end
+
+  def changeset(struct, params) do
+    struct
+    |> cast(params, [:name, :count])
+    |> validate_required([:name])
+    |> unique_constraint(:name)
+  end
+
+  def get_as_map(names) when is_list(names) do
+    CounterCache
+    |> where([cc], cc.name in ^names)
+    |> Repo.all()
+    |> Enum.group_by(& &1.name, & &1.count)
+    |> Map.new(fn {k, v} -> {k, hd(v)} end)
+  end
+
+  def set(name, count) do
+    %CounterCache{}
+    |> changeset(%{"name" => name, "count" => count})
+    |> Repo.insert(
+      on_conflict: [set: [count: count]],
+      returning: true,
+      conflict_target: :name
+    )
+  end
+end

lib/pleroma/emails/admin_email.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Emails.AdminEmail do

lib/pleroma/following_relationship.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.FollowingRelationship do

lib/pleroma/formatter.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Formatter do

lib/pleroma/html.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.HTML do

lib/pleroma/mime.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.MIME do
@@ -9,7 +9,7 @@ defmodule Pleroma.MIME do
   @default "application/octet-stream"
   @read_bytes 35
 
-  @spec file_mime_type(String.t()) ::
+  @spec file_mime_type(String.t(), String.t()) ::
           {:ok, content_type :: String.t(), filename :: String.t()} | {:error, any()} | :error
   def file_mime_type(path, filename) do
     with {:ok, content_type} <- file_mime_type(path),

lib/pleroma/notification.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Notification do

lib/pleroma/object.ex

@@ -1,10 +1,13 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Object do
   use Ecto.Schema
 
+  import Ecto.Query
+  import Ecto.Changeset
+
   alias Pleroma.Activity
   alias Pleroma.Object
   alias Pleroma.Object.Fetcher
@@ -12,9 +15,6 @@ defmodule Pleroma.Object do
   alias Pleroma.Repo
   alias Pleroma.User
 
-  import Ecto.Query
-  import Ecto.Changeset
-
   require Logger
 
   @type t() :: %__MODULE__{}
@@ -145,18 +145,18 @@ defmodule Pleroma.Object do
   # Legacy objects can be mutated by anybody
   def authorize_mutation(%Object{}, %User{}), do: true
 
+  @spec get_cached_by_ap_id(String.t()) :: Object.t() | nil
   def get_cached_by_ap_id(ap_id) do
     key = "object:#{ap_id}"
 
-    Cachex.fetch!(:object_cache, key, fn _ ->
+    with {:ok, nil} <- Cachex.get(:object_cache, key),
-      object = get_by_ap_id(ap_id)
+         object when not is_nil(object) <- get_by_ap_id(ap_id),
-
+         {:ok, true} <- Cachex.put(:object_cache, key, object) do
-      if object do
+      object
-        {:commit, object}
     else
-        {:ignore, object}
+      {:ok, object} -> object
+      nil -> nil
     end
-    end)
   end
 
   def context_mapping(context) do
@@ -301,4 +301,26 @@ defmodule Pleroma.Object do
   def local?(%Object{data: %{"id" => id}}) do
     String.starts_with?(id, Pleroma.Web.base_url() <> "/")
   end
+
+  def replies(object, opts \\ []) do
+    object = Object.normalize(object)
+
+    query =
+      Object
+      |> where(
+        [o],
+        fragment("(?)->>'inReplyTo' = ?", o.data, ^object.data["id"])
+      )
+      |> order_by([o], asc: o.id)
+
+    if opts[:self_only] do
+      actor = object.data["actor"]
+      where(query, [o], fragment("(?)->>'actor' = ?", o.data, ^actor))
+    else
+      query
+    end
+  end
+
+  def self_replies(object, opts \\ []),
+    do: replies(object, Keyword.put(opts, :self_only, true))
 end

lib/pleroma/object/containment.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Object.Containment do
@@ -39,15 +39,8 @@ defmodule Pleroma.Object.Containment do
     defp compare_uris(_, %URI{scheme: "tag"}), do: :ok
   end
 
-  defp compare_uris(%URI{} = id_uri, %URI{} = other_uri) do
+  defp compare_uris(%URI{host: host} = _id_uri, %URI{host: host} = _other_uri), do: :ok
-    if id_uri.host == other_uri.host do
+  defp compare_uris(_id_uri, _other_uri), do: :error
-      :ok
-    else
-      :error
-    end
-  end
-
-  defp compare_uris(_, _), do: :error
 
   @doc """
   Checks that an imported AP object's actor matches the domain it came from.

lib/pleroma/object/fetcher.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Object.Fetcher do
@@ -10,6 +10,7 @@ defmodule Pleroma.Object.Fetcher do
   alias Pleroma.Signature
   alias Pleroma.Web.ActivityPub.InternalFetchActor
   alias Pleroma.Web.ActivityPub.Transmogrifier
+  alias Pleroma.Web.Federator
 
   require Logger
   require Pleroma.Constants
@@ -59,20 +60,23 @@ defmodule Pleroma.Object.Fetcher do
     end
   end
 
-  # TODO:
+  # Note: will create a Create activity, which we need internally at the moment.
-  # This will create a Create activity, which we need internally at the moment.
   def fetch_object_from_id(id, options \\ []) do
-    with {:fetch_object, nil} <- {:fetch_object, Object.get_cached_by_ap_id(id)},
+    with {_, nil} <- {:fetch_object, Object.get_cached_by_ap_id(id)},
-         {:fetch, {:ok, data}} <- {:fetch, fetch_and_contain_remote_object_from_id(id)},
+         {_, true} <- {:allowed_depth, Federator.allowed_thread_distance?(options[:depth])},
-         {:normalize, nil} <- {:normalize, Object.normalize(data, false)},
+         {_, {:ok, data}} <- {:fetch, fetch_and_contain_remote_object_from_id(id)},
+         {_, nil} <- {:normalize, Object.normalize(data, false)},
          params <- prepare_activity_params(data),
-         {:containment, :ok} <- {:containment, Containment.contain_origin(id, params)},
+         {_, :ok} <- {:containment, Containment.contain_origin(id, params)},
-         {:transmogrifier, {:ok, activity}} <-
+         {_, {:ok, activity}} <-
            {:transmogrifier, Transmogrifier.handle_incoming(params, options)},
-         {:object, _data, %Object{} = object} <-
+         {_, _data, %Object{} = object} <-
            {:object, data, Object.normalize(activity, false)} do
       {:ok, object}
     else
+      {:allowed_depth, false} ->
+        {:error, "Max thread distance exceeded."}
+
       {:containment, _} ->
         {:error, "Object containment failed."}
 

lib/pleroma/pagination.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Pagination do
@@ -12,11 +12,15 @@ defmodule Pleroma.Pagination do
 
   alias Pleroma.Repo
 
+  @type type :: :keyset | :offset
+
   @default_limit 20
+  @max_limit 40
   @page_keys ["max_id", "min_id", "limit", "since_id", "order"]
 
   def page_keys, do: @page_keys
 
+  @spec fetch_paginated(Ecto.Query.t(), map(), type(), atom() | nil) :: [Ecto.Schema.t()]
   def fetch_paginated(query, params, type \\ :keyset, table_binding \\ nil)
 
   def fetch_paginated(query, %{"total" => true} = params, :keyset, table_binding) do
@@ -57,6 +61,7 @@ defmodule Pleroma.Pagination do
     |> Repo.all()
   end
 
+  @spec paginate(Ecto.Query.t(), map(), type(), atom() | nil) :: [Ecto.Schema.t()]
   def paginate(query, options, method \\ :keyset, table_binding \\ nil)
 
   def paginate(query, options, :keyset, table_binding) do
@@ -130,7 +135,11 @@ defmodule Pleroma.Pagination do
   end
 
   defp restrict(query, :limit, options, _table_binding) do
-    limit = Map.get(options, :limit, @default_limit)
+    limit =
+      case Map.get(options, :limit, @default_limit) do
+        limit when limit < @max_limit -> limit
+        _ -> @max_limit
+      end
 
     query
     |> limit(^limit)

lib/pleroma/plugs/http_security_plug.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Plugs.HTTPSecurityPlug do

lib/pleroma/plugs/http_signature.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do

lib/pleroma/plugs/oauth_scopes_plug.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Plugs.OAuthScopesPlug do

lib/pleroma/plugs/rate_limiter/limiter_supervisor.ex

@@ -7,8 +7,8 @@ defmodule Pleroma.Plugs.RateLimiter.LimiterSupervisor do
     DynamicSupervisor.start_link(__MODULE__, init_arg, name: __MODULE__)
   end
 
-  def add_limiter(limiter_name, expiration) do
+  def add_or_return_limiter(limiter_name, expiration) do
-    {:ok, _pid} =
+    result =
       DynamicSupervisor.start_child(
         __MODULE__,
         %{
@@ -28,6 +28,12 @@ defmodule Pleroma.Plugs.RateLimiter.LimiterSupervisor do
              ]}
         }
       )
+
+    case result do
+      {:ok, _pid} = result -> result
+      {:error, {:already_started, pid}} -> {:ok, pid}
+      _ -> result
+    end
   end
 
   @impl true

lib/pleroma/plugs/rate_limiter/rate_limiter.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Plugs.RateLimiter do
@@ -7,12 +7,14 @@ defmodule Pleroma.Plugs.RateLimiter do
 
   ## Configuration
 
-  A keyword list of rate limiters where a key is a limiter name and value is the limiter configuration. The basic configuration is a tuple where:
+  A keyword list of rate limiters where a key is a limiter name and value is the limiter configuration.
+  The basic configuration is a tuple where:
 
   * The first element: `scale` (Integer). The time scale in milliseconds.
   * The second element: `limit` (Integer). How many requests to limit in the time scale provided.
 
-  It is also possible to have different limits for unauthenticated and authenticated users: the keyword value must be a list of two tuples where the first one is a config for unauthenticated users and the second one is for authenticated.
+  It is also possible to have different limits for unauthenticated and authenticated users: the keyword value must be a
+  list of two tuples where the first one is a config for unauthenticated users and the second one is for authenticated.
 
   To disable a limiter set its value to `nil`.
 
@@ -64,42 +66,38 @@ defmodule Pleroma.Plugs.RateLimiter do
   import Pleroma.Web.TranslationHelpers
   import Plug.Conn
 
+  alias Pleroma.Config
   alias Pleroma.Plugs.RateLimiter.LimiterSupervisor
   alias Pleroma.User
 
   require Logger
 
-  def init(opts) do
+  @doc false
-    limiter_name = Keyword.get(opts, :name)
+  def init(plug_opts) do
+    plug_opts
+  end
 
-    case Pleroma.Config.get([:rate_limit, limiter_name]) do
+  def call(conn, plug_opts) do
-      nil ->
+    if disabled?() do
-        nil
+      handle_disabled(conn)
-
+    else
-      config ->
+      action_settings = action_settings(plug_opts)
-        name_root = Keyword.get(opts, :bucket_name, limiter_name)
+      handle(conn, action_settings)
-
-        %{
-          name: name_root,
-          limits: config,
-          opts: opts
-        }
     end
   end
 
-  # Do not limit if there is no limiter configuration
+  defp handle_disabled(conn) do
-  def call(conn, nil), do: conn
+    if Config.get(:env) == :prod do
-
+      Logger.warn("Rate limiter is disabled for localhost/socket")
-  def call(conn, settings) do
+    end
-    case disabled?() do
-      true ->
-        if Pleroma.Config.get(:env) == :prod,
-          do: Logger.warn("Rate limiter is disabled for localhost/socket")
 
     conn
+  end
 
-      false ->
+  defp handle(conn, nil), do: conn
-        settings
+
+  defp handle(conn, action_settings) do
+    action_settings
     |> incorporate_conn_info(conn)
     |> check_rate()
     |> case do
@@ -110,32 +108,31 @@ defmodule Pleroma.Plugs.RateLimiter do
         render_throttled_error(conn)
     end
   end
-  end
 
   def disabled? do
     localhost_or_socket =
-      Pleroma.Config.get([Pleroma.Web.Endpoint, :http, :ip])
+      Config.get([Pleroma.Web.Endpoint, :http, :ip])
       |> Tuple.to_list()
       |> Enum.join(".")
       |> String.match?(~r/^local|^127.0.0.1/)
 
-    remote_ip_disabled = not Pleroma.Config.get([Pleroma.Plugs.RemoteIp, :enabled])
+    remote_ip_disabled = not Config.get([Pleroma.Plugs.RemoteIp, :enabled])
 
     localhost_or_socket and remote_ip_disabled
   end
 
-  def inspect_bucket(conn, name_root, settings) do
+  @inspect_bucket_not_found {:error, :not_found}
-    settings =
-      settings
-      |> incorporate_conn_info(conn)
 
-    bucket_name = make_bucket_name(%{settings | name: name_root})
+  def inspect_bucket(conn, bucket_name_root, plug_opts) do
-    key_name = make_key_name(settings)
+    with %{name: _} = action_settings <- action_settings(plug_opts) do
-    limit = get_limits(settings)
+      action_settings = incorporate_conn_info(action_settings, conn)
+      bucket_name = make_bucket_name(%{action_settings | name: bucket_name_root})
+      key_name = make_key_name(action_settings)
+      limit = get_limits(action_settings)
 
       case Cachex.get(bucket_name, key_name) do
         {:error, :no_cache} ->
-        {:err, :not_found}
+          @inspect_bucket_not_found
 
         {:ok, nil} ->
           {0, limit}
@@ -143,12 +140,28 @@ defmodule Pleroma.Plugs.RateLimiter do
         {:ok, value} ->
           {value, limit - value}
       end
+    else
+      _ -> @inspect_bucket_not_found
+    end
   end
 
-  defp check_rate(settings) do
+  def action_settings(plug_opts) do
-    bucket_name = make_bucket_name(settings)
+    with limiter_name when is_atom(limiter_name) <- plug_opts[:name],
-    key_name = make_key_name(settings)
+         limits when not is_nil(limits) <- Config.get([:rate_limit, limiter_name]) do
-    limit = get_limits(settings)
+      bucket_name_root = Keyword.get(plug_opts, :bucket_name, limiter_name)
+
+      %{
+        name: bucket_name_root,
+        limits: limits,
+        opts: plug_opts
+      }
+    end
+  end
+
+  defp check_rate(action_settings) do
+    bucket_name = make_bucket_name(action_settings)
+    key_name = make_key_name(action_settings)
+    limit = get_limits(action_settings)
 
     case Cachex.get_and_update(bucket_name, key_name, &increment_value(&1, limit)) do
       {:commit, value} ->
@@ -158,8 +171,8 @@ defmodule Pleroma.Plugs.RateLimiter do
         {:error, value}
 
       {:error, :no_cache} ->
-        initialize_buckets(settings)
+        initialize_buckets!(action_settings)
-        check_rate(settings)
+        check_rate(action_settings)
     end
   end
 
@@ -169,16 +182,19 @@ defmodule Pleroma.Plugs.RateLimiter do
 
   defp increment_value(val, _limit), do: {:commit, val + 1}
 
-  defp incorporate_conn_info(settings, %{assigns: %{user: %User{id: user_id}}, params: params}) do
+  defp incorporate_conn_info(action_settings, %{
-    Map.merge(settings, %{
+         assigns: %{user: %User{id: user_id}},
+         params: params
+       }) do
+    Map.merge(action_settings, %{
       mode: :user,
       conn_params: params,
       conn_info: "#{user_id}"
     })
   end
 
-  defp incorporate_conn_info(settings, %{params: params} = conn) do
+  defp incorporate_conn_info(action_settings, %{params: params} = conn) do
-    Map.merge(settings, %{
+    Map.merge(action_settings, %{
       mode: :anon,
       conn_params: params,
       conn_info: "#{ip(conn)}"
@@ -197,10 +213,10 @@ defmodule Pleroma.Plugs.RateLimiter do
     |> halt()
   end
 
-  defp make_key_name(settings) do
+  defp make_key_name(action_settings) do
     ""
-    |> attach_params(settings)
+    |> attach_selected_params(action_settings)
-    |> attach_identity(settings)
+    |> attach_identity(action_settings)
   end
 
   defp get_scale(_, {scale, _}), do: scale
@@ -215,28 +231,35 @@ defmodule Pleroma.Plugs.RateLimiter do
 
   defp get_limits(%{limits: [{_, limit}, _]}), do: limit
 
-  defp make_bucket_name(%{mode: :user, name: name_root}),
+  defp make_bucket_name(%{mode: :user, name: bucket_name_root}),
-    do: user_bucket_name(name_root)
+    do: user_bucket_name(bucket_name_root)
 
-  defp make_bucket_name(%{mode: :anon, name: name_root}),
+  defp make_bucket_name(%{mode: :anon, name: bucket_name_root}),
-    do: anon_bucket_name(name_root)
+    do: anon_bucket_name(bucket_name_root)
 
-  defp attach_params(input, %{conn_params: conn_params, opts: opts}) do
+  defp attach_selected_params(input, %{conn_params: conn_params, opts: plug_opts}) do
-    param_string =
+    params_string =
-      opts
+      plug_opts
       |> Keyword.get(:params, [])
       |> Enum.sort()
       |> Enum.map(&Map.get(conn_params, &1, ""))
       |> Enum.join(":")
 
-    "#{input}#{param_string}"
+    [input, params_string]
+    |> Enum.join(":")
+    |> String.replace_leading(":", "")
   end
 
-  defp initialize_buckets(%{name: _name, limits: nil}), do: :ok
+  defp initialize_buckets!(%{name: _name, limits: nil}), do: :ok
 
-  defp initialize_buckets(%{name: name, limits: limits}) do
+  defp initialize_buckets!(%{name: name, limits: limits}) do
-    LimiterSupervisor.add_limiter(anon_bucket_name(name), get_scale(:anon, limits))
+    {:ok, _pid} =
-    LimiterSupervisor.add_limiter(user_bucket_name(name), get_scale(:user, limits))
+      LimiterSupervisor.add_or_return_limiter(anon_bucket_name(name), get_scale(:anon, limits))
+
+    {:ok, _pid} =
+      LimiterSupervisor.add_or_return_limiter(user_bucket_name(name), get_scale(:user, limits))
+
+    :ok
   end
 
   defp attach_identity(base, %{mode: :user, conn_info: conn_info}),
@@ -245,6 +268,6 @@ defmodule Pleroma.Plugs.RateLimiter do
   defp attach_identity(base, %{mode: :anon, conn_info: conn_info}),
     do: "ip:#{base}:#{conn_info}"
 
-  defp user_bucket_name(name_root), do: "user:#{name_root}" |> String.to_atom()
+  defp user_bucket_name(bucket_name_root), do: "user:#{bucket_name_root}" |> String.to_atom()
-  defp anon_bucket_name(name_root), do: "anon:#{name_root}" |> String.to_atom()
+  defp anon_bucket_name(bucket_name_root), do: "anon:#{bucket_name_root}" |> String.to_atom()
 end

lib/pleroma/plugs/remote_ip.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Plugs.RemoteIp do

lib/pleroma/plugs/user_enabled_plug.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Plugs.UserEnabledPlug do

lib/pleroma/plugs/user_is_admin_plug.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Plugs.UserIsAdminPlug do

lib/pleroma/repo.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Repo do

lib/pleroma/scheduled_activity.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.ScheduledActivity do

lib/pleroma/stats.ex

@@ -1,9 +1,10 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Stats do
   import Ecto.Query
+  alias Pleroma.CounterCache
   alias Pleroma.Repo
   alias Pleroma.User
 
@@ -96,4 +97,21 @@ defmodule Pleroma.Stats do
       }
     }
   end
+
+  def get_status_visibility_count do
+    counter_cache =
+      CounterCache.get_as_map([
+        "status_visibility_public",
+        "status_visibility_private",
+        "status_visibility_unlisted",
+        "status_visibility_direct"
+      ])
+
+    %{
+      public: counter_cache["status_visibility_public"] || 0,
+      unlisted: counter_cache["status_visibility_unlisted"] || 0,
+      private: counter_cache["status_visibility_private"] || 0,
+      direct: counter_cache["status_visibility_direct"] || 0
+    }
+  end
 end

lib/pleroma/upload.ex

@@ -37,6 +37,7 @@ defmodule Pleroma.Upload do
           Plug.Upload.t()
           | (data_uri_string :: String.t())
           | {:from_local, name :: String.t(), id :: String.t(), path :: String.t()}
+          | map()
 
   @type option ::
           {:type, :avatar | :banner | :background}

lib/pleroma/uploaders/local.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Uploaders.Local do

lib/pleroma/uploaders/s3.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Uploaders.S3 do

lib/pleroma/uploaders/uploader.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Uploaders.Uploader do

lib/pleroma/user.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.User do
@@ -749,9 +749,18 @@ defmodule Pleroma.User do
     Cachex.del(:user_cache, "nickname:#{user.nickname}")
   end
 
+  @spec get_cached_by_ap_id(String.t()) :: User.t() | nil
   def get_cached_by_ap_id(ap_id) do
     key = "ap_id:#{ap_id}"
-    Cachex.fetch!(:user_cache, key, fn _ -> get_by_ap_id(ap_id) end)
+
+    with {:ok, nil} <- Cachex.get(:user_cache, key),
+         user when not is_nil(user) <- get_by_ap_id(ap_id),
+         {:ok, true} <- Cachex.put(:user_cache, key, user) do
+      user
+    else
+      {:ok, user} -> user
+      nil -> nil
+    end
   end
 
   def get_cached_by_id(id) do
@@ -853,14 +862,14 @@ defmodule Pleroma.User do
   @spec get_followers_query(User.t()) :: Ecto.Query.t()
   def get_followers_query(user), do: get_followers_query(user, nil)
 
-  @spec get_followers(User.t(), pos_integer()) :: {:ok, list(User.t())}
+  @spec get_followers(User.t(), pos_integer() | nil) :: {:ok, list(User.t())}
   def get_followers(user, page \\ nil) do
     user
     |> get_followers_query(page)
     |> Repo.all()
   end
 
-  @spec get_external_followers(User.t(), pos_integer()) :: {:ok, list(User.t())}
+  @spec get_external_followers(User.t(), pos_integer() | nil) :: {:ok, list(User.t())}
   def get_external_followers(user, page \\ nil) do
     user
     |> get_followers_query(page)
@@ -1304,7 +1313,6 @@ defmodule Pleroma.User do
     Repo.delete(user)
   end
 
-  @spec perform(atom(), User.t()) :: {:ok, User.t()}
   def perform(:fetch_initial_posts, %User{} = user) do
     pages = Pleroma.Config.get!([:fetch_initial_posts, :pages])
 
@@ -1336,7 +1344,6 @@ defmodule Pleroma.User do
     )
   end
 
-  @spec perform(atom(), User.t(), list()) :: list() | {:error, any()}
   def perform(:follow_import, %User{} = follower, followed_identifiers)
       when is_list(followed_identifiers) do
     Enum.map(

lib/pleroma/user/query.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.User.Query do
@@ -48,7 +48,7 @@ defmodule Pleroma.User.Query do
             followers: User.t(),
             friends: User.t(),
             recipients_from_activity: [String.t()],
-            nickname: [String.t()],
+            nickname: [String.t()] | String.t(),
             ap_id: [String.t()],
             order_by: term(),
             select: term(),

lib/pleroma/user/search.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.User.Search do
@@ -33,9 +33,15 @@ defmodule Pleroma.User.Search do
     # Strip the beginning @ off if there is a query
     query_string = String.trim_leading(query_string, "@")
 
-    with [name, domain] <- String.split(query_string, "@"),
+    with [name, domain] <- String.split(query_string, "@") do
-         formatted_domain <- String.replace(domain, ~r/[!-\-|@|[-`|{-~|\/|:|\s]+/, "") do
+      encoded_domain =
-      name <> "@" <> to_string(:idna.encode(formatted_domain))
+        domain
+        |> String.replace(~r/[!-\-|@|[-`|{-~|\/|:|\s]+/, "")
+        |> String.to_charlist()
+        |> :idna.encode()
+        |> to_string()
+
+      name <> "@" <> encoded_domain
     else
       _ -> query_string
     end

lib/pleroma/user_relationship.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.UserRelationship do

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -1,11 +1,12 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.ActivityPub do
   alias Pleroma.Activity
   alias Pleroma.Activity.Ir.Topics
   alias Pleroma.Config
+  alias Pleroma.Constants
   alias Pleroma.Conversation
   alias Pleroma.Conversation.Participation
   alias Pleroma.Notification
@@ -124,6 +125,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   def increase_poll_votes_if_vote(_create_data), do: :noop
 
+  @spec insert(map(), boolean(), boolean(), boolean()) :: {:ok, Activity.t()} | {:error, any()}
   def insert(map, local \\ true, fake \\ false, bypass_actor_check \\ false) when is_map(map) do
     with nil <- Activity.normalize(map),
          map <- lazy_put_activity_defaults(map, fake),
@@ -231,12 +233,19 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     :noop
   end
 
-  def create(%{to: to, actor: actor, context: context, object: object} = params, fake \\ false) do
+  @spec create(map(), boolean()) :: {:ok, Activity.t()} | {:error, any()}
+  def create(params, fake \\ false) do
+    with {:ok, result} <- Repo.transaction(fn -> do_create(params, fake) end) do
+      result
+    end
+  end
+
+  defp do_create(%{to: to, actor: actor, context: context, object: object} = params, fake) do
     additional = params[:additional] || %{}
     # only accept false as false value
     local = !(params[:local] == false)
     published = params[:published]
-    quick_insert? = Pleroma.Config.get([:env]) == :benchmark
+    quick_insert? = Config.get([:env]) == :benchmark
 
     with create_data <-
            make_create_data(
@@ -259,10 +268,11 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
         {:ok, activity}
 
       {:error, message} ->
-        {:error, message}
+        Repo.rollback(message)
     end
   end
 
+  @spec listen(map()) :: {:ok, Activity.t()} | {:error, any()}
   def listen(%{to: to, actor: actor, context: context, object: object} = params) do
     additional = params[:additional] || %{}
     # only accept false as false value
@@ -277,20 +287,20 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          {:ok, activity} <- insert(listen_data, local),
          :ok <- maybe_federate(activity) do
       {:ok, activity}
-    else
-      {:error, message} ->
-        {:error, message}
     end
   end
 
+  @spec accept(map()) :: {:ok, Activity.t()} | {:error, any()}
   def accept(params) do
     accept_or_reject("Accept", params)
   end
 
+  @spec reject(map()) :: {:ok, Activity.t()} | {:error, any()}
   def reject(params) do
     accept_or_reject("Reject", params)
   end
 
+  @spec accept_or_reject(String.t(), map()) :: {:ok, Activity.t()} | {:error, any()}
   def accept_or_reject(type, %{to: to, actor: actor, object: object} = params) do
     local = Map.get(params, :local, true)
     activity_id = Map.get(params, :activity_id, nil)
@@ -304,6 +314,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
+  @spec update(map()) :: {:ok, Activity.t()} | {:error, any()}
   def update(%{to: to, cc: cc, actor: actor, object: object} = params) do
     local = !(params[:local] == false)
     activity_id = params[:activity_id]
@@ -322,7 +333,16 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
+  @spec react_with_emoji(User.t(), Object.t(), String.t(), keyword()) ::
+          {:ok, Activity.t(), Object.t()} | {:error, any()}
   def react_with_emoji(user, object, emoji, options \\ []) do
+    with {:ok, result} <-
+           Repo.transaction(fn -> do_react_with_emoji(user, object, emoji, options) end) do
+      result
+    end
+  end
+
+  defp do_react_with_emoji(user, object, emoji, options) do
     with local <- Keyword.get(options, :local, true),
          activity_id <- Keyword.get(options, :activity_id, nil),
          true <- Pleroma.Emoji.is_unicode_emoji?(emoji),
@@ -332,11 +352,21 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          :ok <- maybe_federate(activity) do
       {:ok, activity, object}
     else
-      e -> {:error, e}
+      false -> {:error, false}
+      {:error, error} -> Repo.rollback(error)
     end
   end
 
+  @spec unreact_with_emoji(User.t(), String.t(), keyword()) ::
+          {:ok, Activity.t(), Object.t()} | {:error, any()}
   def unreact_with_emoji(user, reaction_id, options \\ []) do
+    with {:ok, result} <-
+           Repo.transaction(fn -> do_unreact_with_emoji(user, reaction_id, options) end) do
+      result
+    end
+  end
+
+  defp do_unreact_with_emoji(user, reaction_id, options) do
     with local <- Keyword.get(options, :local, true),
          activity_id <- Keyword.get(options, :activity_id, nil),
          user_ap_id <- user.ap_id,
@@ -348,16 +378,24 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          :ok <- maybe_federate(activity) do
       {:ok, activity, object}
     else
-      e -> {:error, e}
+      {:error, error} -> Repo.rollback(error)
     end
   end
 
   # TODO: This is weird, maybe we shouldn't check here if we can make the activity.
-  def like(
+  @spec like(User.t(), Object.t(), String.t() | nil, boolean()) ::
+          {:ok, Activity.t(), Object.t()} | {:error, any()}
+  def like(user, object, activity_id \\ nil, local \\ true) do
+    with {:ok, result} <- Repo.transaction(fn -> do_like(user, object, activity_id, local) end) do
+      result
+    end
+  end
+
+  defp do_like(
          %User{ap_id: ap_id} = user,
          %Object{data: %{"id" => _}} = object,
-        activity_id \\ nil,
+         activity_id,
-        local \\ true
+         local
        ) do
     with nil <- get_existing_like(ap_id, object),
          like_data <- make_like_data(user, object, activity_id),
@@ -366,12 +404,24 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          :ok <- maybe_federate(activity) do
       {:ok, activity, object}
     else
-      %Activity{} = activity -> {:ok, activity, object}
+      %Activity{} = activity ->
-      error -> {:error, error}
+        {:ok, activity, object}
+
+      {:error, error} ->
+        Repo.rollback(error)
     end
   end
 
+  @spec unlike(User.t(), Object.t(), String.t() | nil, boolean()) ::
+          {:ok, Activity.t(), Activity.t(), Object.t()} | {:ok, Object.t()} | {:error, any()}
   def unlike(%User{} = actor, %Object{} = object, activity_id \\ nil, local \\ true) do
+    with {:ok, result} <-
+           Repo.transaction(fn -> do_unlike(actor, object, activity_id, local) end) do
+      result
+    end
+  end
+
+  defp do_unlike(actor, object, activity_id, local) do
     with %Activity{} = like_activity <- get_existing_like(actor.ap_id, object),
          unlike_data <- make_unlike_data(actor, like_activity, activity_id),
          {:ok, unlike_activity} <- insert(unlike_data, local),
@@ -380,10 +430,13 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          :ok <- maybe_federate(unlike_activity) do
       {:ok, unlike_activity, like_activity, object}
     else
-      _e -> {:ok, object}
+      nil -> {:ok, object}
+      {:error, error} -> Repo.rollback(error)
     end
   end
 
+  @spec announce(User.t(), Object.t(), String.t() | nil, boolean(), boolean()) ::
+          {:ok, Activity.t(), Object.t()} | {:error, any()}
   def announce(
         %User{ap_id: _} = user,
         %Object{data: %{"id" => _}} = object,
@@ -391,6 +444,13 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
         local \\ true,
         public \\ true
       ) do
+    with {:ok, result} <-
+           Repo.transaction(fn -> do_announce(user, object, activity_id, local, public) end) do
+      result
+    end
+  end
+
+  defp do_announce(user, object, activity_id, local, public) do
     with true <- is_announceable?(object, user, public),
          announce_data <- make_announce_data(user, object, activity_id, public),
          {:ok, activity} <- insert(announce_data, local),
@@ -398,16 +458,26 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          :ok <- maybe_federate(activity) do
       {:ok, activity, object}
     else
-      error -> {:error, error}
+      false -> {:error, false}
+      {:error, error} -> Repo.rollback(error)
     end
   end
 
+  @spec unannounce(User.t(), Object.t(), String.t() | nil, boolean()) ::
+          {:ok, Activity.t(), Object.t()} | {:ok, Object.t()} | {:error, any()}
   def unannounce(
         %User{} = actor,
         %Object{} = object,
         activity_id \\ nil,
         local \\ true
       ) do
+    with {:ok, result} <-
+           Repo.transaction(fn -> do_unannounce(actor, object, activity_id, local) end) do
+      result
+    end
+  end
+
+  defp do_unannounce(actor, object, activity_id, local) do
     with %Activity{} = announce_activity <- get_existing_announce(actor.ap_id, object),
          unannounce_data <- make_unannounce_data(actor, announce_activity, activity_id),
          {:ok, unannounce_activity} <- insert(unannounce_data, local),
@@ -416,30 +486,61 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          {:ok, object} <- remove_announce_from_object(announce_activity, object) do
       {:ok, unannounce_activity, object}
     else
-      _e -> {:ok, object}
+      nil -> {:ok, object}
+      {:error, error} -> Repo.rollback(error)
     end
   end
 
+  @spec follow(User.t(), User.t(), String.t() | nil, boolean()) ::
+          {:ok, Activity.t()} | {:error, any()}
   def follow(follower, followed, activity_id \\ nil, local \\ true) do
+    with {:ok, result} <-
+           Repo.transaction(fn -> do_follow(follower, followed, activity_id, local) end) do
+      result
+    end
+  end
+
+  defp do_follow(follower, followed, activity_id, local) do
     with data <- make_follow_data(follower, followed, activity_id),
          {:ok, activity} <- insert(data, local),
          :ok <- maybe_federate(activity),
          _ <- User.set_follow_state_cache(follower.ap_id, followed.ap_id, activity.data["state"]) do
       {:ok, activity}
+    else
+      {:error, error} -> Repo.rollback(error)
     end
   end
 
+  @spec unfollow(User.t(), User.t(), String.t() | nil, boolean()) ::
+          {:ok, Activity.t()} | nil | {:error, any()}
   def unfollow(follower, followed, activity_id \\ nil, local \\ true) do
+    with {:ok, result} <-
+           Repo.transaction(fn -> do_unfollow(follower, followed, activity_id, local) end) do
+      result
+    end
+  end
+
+  defp do_unfollow(follower, followed, activity_id, local) do
     with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
          {:ok, follow_activity} <- update_follow_state(follow_activity, "cancelled"),
          unfollow_data <- make_unfollow_data(follower, followed, follow_activity, activity_id),
          {:ok, activity} <- insert(unfollow_data, local),
          :ok <- maybe_federate(activity) do
       {:ok, activity}
+    else
+      nil -> nil
+      {:error, error} -> Repo.rollback(error)
     end
   end
 
-  def delete(%User{ap_id: ap_id, follower_address: follower_address} = user) do
+  @spec delete(User.t() | Object.t(), keyword()) :: {:ok, User.t() | Object.t()} | {:error, any()}
+  def delete(entity, options \\ []) do
+    with {:ok, result} <- Repo.transaction(fn -> do_delete(entity, options) end) do
+      result
+    end
+  end
+
+  defp do_delete(%User{ap_id: ap_id, follower_address: follower_address} = user, _) do
     with data <- %{
            "to" => [follower_address],
            "type" => "Delete",
@@ -452,7 +553,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
-  def delete(%Object{data: %{"id" => id, "actor" => actor}} = object, options \\ []) do
+  defp do_delete(%Object{data: %{"id" => id, "actor" => actor}} = object, options) do
     local = Keyword.get(options, :local, true)
     activity_id = Keyword.get(options, :activity_id, nil)
     actor = Keyword.get(options, :actor, actor)
@@ -477,11 +578,22 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          {:ok, _actor} <- decrease_note_count_if_public(user, object),
          :ok <- maybe_federate(activity) do
       {:ok, activity}
+    else
+      {:error, error} ->
+        Repo.rollback(error)
     end
   end
 
-  @spec block(User.t(), User.t(), String.t() | nil, boolean) :: {:ok, Activity.t() | nil}
+  @spec block(User.t(), User.t(), String.t() | nil, boolean()) ::
+          {:ok, Activity.t()} | {:error, any()}
   def block(blocker, blocked, activity_id \\ nil, local \\ true) do
+    with {:ok, result} <-
+           Repo.transaction(fn -> do_block(blocker, blocked, activity_id, local) end) do
+      result
+    end
+  end
+
+  defp do_block(blocker, blocked, activity_id, local) do
     outgoing_blocks = Config.get([:activitypub, :outgoing_blocks])
     unfollow_blocked = Config.get([:activitypub, :unfollow_blocked])
 
@@ -496,20 +608,32 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
          :ok <- maybe_federate(activity) do
       {:ok, activity}
     else
-      _e -> {:ok, nil}
+      {:error, error} -> Repo.rollback(error)
     end
   end
 
+  @spec unblock(User.t(), User.t(), String.t() | nil, boolean()) ::
+          {:ok, Activity.t()} | {:error, any()} | nil
   def unblock(blocker, blocked, activity_id \\ nil, local \\ true) do
+    with {:ok, result} <-
+           Repo.transaction(fn -> do_unblock(blocker, blocked, activity_id, local) end) do
+      result
+    end
+  end
+
+  defp do_unblock(blocker, blocked, activity_id, local) do
     with %Activity{} = block_activity <- fetch_latest_block(blocker, blocked),
          unblock_data <- make_unblock_data(blocker, blocked, block_activity, activity_id),
          {:ok, activity} <- insert(unblock_data, local),
          :ok <- maybe_federate(activity) do
       {:ok, activity}
+    else
+      nil -> nil
+      {:error, error} -> Repo.rollback(error)
     end
   end
 
-  @spec flag(map()) :: {:ok, Activity.t()} | any
+  @spec flag(map()) :: {:ok, Activity.t()} | {:error, any()}
   def flag(
         %{
           actor: actor,
@@ -546,6 +670,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
+  @spec move(User.t(), User.t(), boolean()) :: {:ok, Activity.t()} | {:error, any()}
   def move(%User{} = origin, %User{} = target, local \\ true) do
     params = %{
       "type" => "Move",
@@ -571,7 +696,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   end
 
   defp fetch_activities_for_context_query(context, opts) do
-    public = [Pleroma.Constants.as_public()]
+    public = [Constants.as_public()]
 
     recipients =
       if opts["user"],
@@ -616,10 +741,11 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> Repo.one()
   end
 
+  @spec fetch_public_activities(map(), Pagination.type()) :: [Activity.t()]
   def fetch_public_activities(opts \\ %{}, pagination \\ :keyset) do
     opts = Map.drop(opts, ["user"])
 
-    [Pleroma.Constants.as_public()]
+    [Constants.as_public()]
     |> fetch_activities_query(opts)
     |> restrict_unlisted()
     |> Pagination.fetch_paginated(opts, pagination)
@@ -770,13 +896,18 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> Enum.reverse()
   end
 
-  def fetch_instance_activities(params) do
+  def fetch_statuses(reading_user, params) do
     params =
       params
       |> Map.put("type", ["Create", "Announce"])
-      |> Map.put("instance", params["instance"])
 
-    fetch_activities([Pleroma.Constants.as_public()], params, :offset)
+    recipients =
+      user_activities_recipients(%{
+        "godmode" => params["godmode"],
+        "reading_user" => reading_user
+      })
+
+    fetch_activities(recipients, params, :offset)
     |> Enum.reverse()
   end
 
@@ -786,9 +917,9 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
 
   defp user_activities_recipients(%{"reading_user" => reading_user}) do
     if reading_user do
-      [Pleroma.Constants.as_public()] ++ [reading_user.ap_id | User.following(reading_user)]
+      [Constants.as_public()] ++ [reading_user.ap_id | User.following(reading_user)]
     else
-      [Pleroma.Constants.as_public()]
+      [Constants.as_public()]
     end
   end
 
@@ -995,7 +1126,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
         fragment(
           "not (coalesce(?->'cc', '{}'::jsonb) \\?| ?)",
           activity.data,
-          ^[Pleroma.Constants.as_public()]
+          ^[Constants.as_public()]
         )
     )
   end
@@ -1169,7 +1300,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   @doc """
   Fetch favorites activities of user with order by sort adds to favorites
   """
-  @spec fetch_favourites(User.t(), map(), atom()) :: list(Activity.t())
+  @spec fetch_favourites(User.t(), map(), Pagination.type()) :: list(Activity.t())
   def fetch_favourites(user, params \\ %{}, pagination \\ :keyset) do
     user.ap_id
     |> Activity.Queries.by_actor()
@@ -1207,7 +1338,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
       where:
         fragment("? && ?", activity.recipients, ^recipients) or
           (fragment("? && ?", activity.recipients, ^recipients_with_public) and
-             ^Pleroma.Constants.as_public() in activity.recipients)
+             ^Constants.as_public() in activity.recipients)
     )
   end
 
@@ -1223,6 +1354,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     |> Enum.reverse()
   end
 
+  @spec upload(Upload.source(), keyword()) :: {:ok, Object.t()} | {:error, any()}
   def upload(file, opts \\ []) do
     with {:ok, data} <- Upload.store(file, opts) do
       obj_data =
@@ -1320,8 +1452,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   defp normalize_counter(_), do: 0
 
   defp maybe_update_follow_information(data) do
-    with {:enabled, true} <-
+    with {:enabled, true} <- {:enabled, Config.get([:instance, :external_user_synchronization])},
-           {:enabled, Pleroma.Config.get([:instance, :external_user_synchronization])},
          {:ok, info} <- fetch_follow_information_for_user(data) do
       info = Map.merge(data[:info] || %{}, info)
       Map.put(data, :info, info)

lib/pleroma/web/activity_pub/mrf/anti_link_spam_policy.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.MRF.AntiLinkSpamPolicy do

lib/pleroma/web/activity_pub/mrf/media_proxy_warming_policy.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.MRF.MediaProxyWarmingPolicy do

lib/pleroma/web/activity_pub/mrf/no_op_policy.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.MRF.NoOpPolicy do

lib/pleroma/web/activity_pub/mrf/object_age_policy.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.MRF.ObjectAgePolicy do

lib/pleroma/web/activity_pub/mrf/simple_policy.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do

lib/pleroma/web/activity_pub/mrf/subchain_policy.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.MRF.SubchainPolicy do

lib/pleroma/web/activity_pub/mrf/user_allow_list_policy.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.MRF.UserAllowListPolicy do

lib/pleroma/web/activity_pub/mrf/vocabulary_policy.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.MRF.VocabularyPolicy do

lib/pleroma/web/activity_pub/publisher.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.Publisher do

lib/pleroma/web/activity_pub/relay.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.Relay do

lib/pleroma/web/activity_pub/transmogrifier.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.Transmogrifier do
@@ -156,10 +156,11 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
       when not is_nil(in_reply_to) do
     in_reply_to_id = prepare_in_reply_to(in_reply_to)
     object = Map.put(object, "inReplyToAtomUri", in_reply_to_id)
+    depth = (options[:depth] || 0) + 1
 
-    if Federator.allowed_incoming_reply_depth?(options[:depth]) do
+    if Federator.allowed_thread_distance?(depth) do
       with {:ok, replied_object} <- get_obj_helper(in_reply_to_id, options),
-           %Activity{} = _ <- Activity.get_create_by_object_ap_id(replied_object.data["id"]) do
+           %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)
@@ -312,7 +313,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
   def fix_type(%{"inReplyTo" => reply_id, "name" => _} = object, options)
       when is_binary(reply_id) do
-    with true <- Federator.allowed_incoming_reply_depth?(options[:depth]),
+    with true <- Federator.allowed_thread_distance?(options[:depth]),
          {:ok, %{data: %{"type" => "Question"} = _} = _} <- get_obj_helper(reply_id, options) do
       Map.put(object, "type", "Answer")
     else
@@ -406,8 +407,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
     with nil <- Activity.get_create_by_object_ap_id(object["id"]),
          {:ok, %User{} = user} <- User.get_or_fetch_by_ap_id(data["actor"]) do
-      options = Keyword.put(options, :depth, (options[:depth] || 0) + 1)
+      object = fix_object(object, options)
-      object = fix_object(data["object"], options)
 
       params = %{
         to: data["to"],
@@ -424,7 +424,20 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
           ])
       }
 
-      ActivityPub.create(params)
+      with {:ok, created_activity} <- ActivityPub.create(params) do
+        reply_depth = (options[:depth] || 0) + 1
+
+        if Federator.allowed_thread_distance?(reply_depth) do
+          for reply_id <- replies(object) do
+            Pleroma.Workers.RemoteFetcherWorker.enqueue("fetch_remote", %{
+              "id" => reply_id,
+              "depth" => reply_depth
+            })
+          end
+        end
+
+        {:ok, created_activity}
+      end
     else
       %Activity{} = activity -> {:ok, activity}
       _e -> :error
@@ -442,7 +455,8 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
       |> fix_addressing
 
     with {:ok, %User{} = user} <- User.get_or_fetch_by_ap_id(data["actor"]) do
-      options = Keyword.put(options, :depth, (options[:depth] || 0) + 1)
+      reply_depth = (options[:depth] || 0) + 1
+      options = Keyword.put(options, :depth, reply_depth)
       object = fix_object(object, options)
 
       params = %{
@@ -903,6 +917,50 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
   def set_reply_to_uri(obj), do: obj
 
+  @doc """
+  Serialized Mastodon-compatible `replies` collection containing _self-replies_.
+  Based on Mastodon's ActivityPub::NoteSerializer#replies.
+  """
+  def set_replies(obj_data) do
+    replies_uris =
+      with limit when limit > 0 <-
+             Pleroma.Config.get([:activitypub, :note_replies_output_limit], 0),
+           %Object{} = object <- Object.get_cached_by_ap_id(obj_data["id"]) do
+        object
+        |> Object.self_replies()
+        |> select([o], fragment("?->>'id'", o.data))
+        |> limit(^limit)
+        |> Repo.all()
+      else
+        _ -> []
+      end
+
+    set_replies(obj_data, replies_uris)
+  end
+
+  defp set_replies(obj, []) do
+    obj
+  end
+
+  defp set_replies(obj, replies_uris) do
+    replies_collection = %{
+      "type" => "Collection",
+      "items" => replies_uris
+    }
+
+    Map.merge(obj, %{"replies" => replies_collection})
+  end
+
+  def replies(%{"replies" => %{"first" => %{"items" => items}}}) when not is_nil(items) do
+    items
+  end
+
+  def replies(%{"replies" => %{"items" => items}}) when not is_nil(items) do
+    items
+  end
+
+  def replies(_), do: []
+
   # Prepares the object of an outgoing create activity.
   def prepare_object(object) do
     object
@@ -914,6 +972,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     |> prepare_attachments
     |> set_conversation
     |> set_reply_to_uri
+    |> set_replies
     |> strip_internal_fields
     |> strip_internal_tags
     |> set_type

lib/pleroma/web/activity_pub/utils.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.Utils do
@@ -45,8 +45,8 @@ defmodule Pleroma.Web.ActivityPub.Utils do
     Map.put(params, "actor", get_ap_id(params["actor"]))
   end
 
-  @spec determine_explicit_mentions(map()) :: map()
+  @spec determine_explicit_mentions(map()) :: [any]
-  def determine_explicit_mentions(%{"tag" => tag} = _) when is_list(tag) do
+  def determine_explicit_mentions(%{"tag" => tag}) when is_list(tag) do
     Enum.flat_map(tag, fn
       %{"type" => "Mention", "href" => href} -> [href]
       _ -> []
@@ -427,7 +427,7 @@ defmodule Pleroma.Web.ActivityPub.Utils do
   @doc """
   Updates a follow activity's state (for locked accounts).
   """
-  @spec update_follow_state_for_all(Activity.t(), String.t()) :: {:ok, Activity} | {:error, any()}
+  @spec update_follow_state_for_all(Activity.t(), String.t()) :: {:ok, Activity | nil}
   def update_follow_state_for_all(
         %Activity{data: %{"actor" => actor, "object" => object}} = activity,
         state

lib/pleroma/web/admin_api/admin_api_controller.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.AdminAPI.AdminAPIController do
@@ -13,6 +13,7 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
   alias Pleroma.ModerationLog
   alias Pleroma.Plugs.OAuthScopesPlug
   alias Pleroma.ReportNote
+  alias Pleroma.Stats
   alias Pleroma.User
   alias Pleroma.UserInviteToken
   alias Pleroma.Web.ActivityPub.ActivityPub
@@ -98,7 +99,7 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
   plug(
     OAuthScopesPlug,
     %{scopes: ["read"], admin: true}
-    when action in [:config_show, :list_log]
+    when action in [:config_show, :list_log, :stats]
   )
 
   plug(
@@ -243,13 +244,15 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
   end
 
   def list_instance_statuses(conn, %{"instance" => instance} = params) do
+    with_reblogs = params["with_reblogs"] == "true" || params["with_reblogs"] == true
     {page, page_size} = page_params(params)
 
     activities =
-      ActivityPub.fetch_instance_activities(%{
+      ActivityPub.fetch_statuses(nil, %{
         "instance" => instance,
         "limit" => page_size,
-        "offset" => (page - 1) * page_size
+        "offset" => (page - 1) * page_size,
+        "exclude_reblogs" => !with_reblogs && "true"
       })
 
     conn
@@ -258,6 +261,7 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
   end
 
   def list_user_statuses(conn, %{"nickname" => nickname} = params) do
+    with_reblogs = params["with_reblogs"] == "true" || params["with_reblogs"] == true
     godmode = params["godmode"] == "true" || params["godmode"] == true
 
     with %User{} = user <- User.get_cached_by_nickname_or_id(nickname) do
@@ -266,7 +270,8 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
       activities =
         ActivityPub.fetch_user_activities(user, nil, %{
           "limit" => page_size,
-          "godmode" => godmode
+          "godmode" => godmode,
+          "exclude_reblogs" => !with_reblogs && "true"
         })
 
       conn
@@ -740,6 +745,24 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
     end
   end
 
+  def list_statuses(%{assigns: %{user: admin}} = conn, params) do
+    godmode = params["godmode"] == "true" || params["godmode"] == true
+    local_only = params["local_only"] == "true" || params["local_only"] == true
+    {page, page_size} = page_params(params)
+
+    activities =
+      ActivityPub.fetch_statuses(admin, %{
+        "godmode" => godmode,
+        "local_only" => local_only,
+        "limit" => page_size,
+        "offset" => (page - 1) * page_size
+      })
+
+    conn
+    |> put_view(Pleroma.Web.AdminAPI.StatusView)
+    |> render("index.json", %{activities: activities, as: :activity})
+  end
+
   def status_update(%{assigns: %{user: admin}} = conn, %{"id" => id} = params) do
     with {:ok, activity} <- CommonAPI.update_activity_scope(id, params) do
       {:ok, sensitive} = Ecto.Type.cast(:boolean, params["sensitive"])
@@ -953,6 +976,13 @@ defmodule Pleroma.Web.AdminAPI.AdminAPIController do
     conn |> json("")
   end
 
+  def stats(conn, _) do
+    count = Stats.get_status_visibility_count()
+
+    conn
+    |> json(%{"status_visibility" => count})
+  end
+
   def errors(conn, {:error, :not_found}) do
     conn
     |> put_status(:not_found)

lib/pleroma/web/admin_api/search.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.AdminAPI.Search do
@@ -18,7 +18,11 @@ defmodule Pleroma.Web.AdminAPI.Search do
 
   @spec user(map()) :: {:ok, [User.t()], pos_integer()}
   def user(params \\ %{}) do
-    query = User.Query.build(params) |> order_by([u], u.nickname)
+    query =
+      params
+      |> Map.drop([:page, :page_size])
+      |> User.Query.build()
+      |> order_by([u], u.nickname)
 
     paginated_query =
       User.Query.paginate(query, params[:page] || 1, params[:page_size] || @page_size)

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

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.AdminAPI.ConfigView do

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

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.AdminAPI.StatusView do
@@ -10,7 +10,7 @@ defmodule Pleroma.Web.AdminAPI.StatusView do
   alias Pleroma.User
 
   def render("index.json", opts) do
-    render_many(opts.activities, __MODULE__, "show.json", opts)
+    safe_render_many(opts.activities, __MODULE__, "show.json", opts)
   end
 
   def render("show.json", %{activity: %{data: %{"object" => _object}} = activity} = opts) do

lib/pleroma/web/common_api/common_api.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.CommonAPI do

lib/pleroma/web/common_api/utils.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.CommonAPI.Utils do

lib/pleroma/web/controller_helper.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ControllerHelper do

lib/pleroma/web/endpoint.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Endpoint do

lib/pleroma/web/federator/federator.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Federator do
@@ -15,13 +15,19 @@ defmodule Pleroma.Web.Federator do
 
   require Logger
 
-  @doc "Addresses [memory leaks on recursive replies fetching](https://git.pleroma.social/pleroma/pleroma/issues/161)"
+  @doc """
+  Returns `true` if the distance to target object does not exceed max configured value.
+  Serves to prevent fetching of very long threads, especially useful on smaller instances.
+  Addresses [memory leaks on recursive replies fetching](https://git.pleroma.social/pleroma/pleroma/issues/161).
+  Applies to fetching of both ancestor (reply-to) and child (reply) objects.
+  """
   # credo:disable-for-previous-line Credo.Check.Readability.MaxLineLength
-  def allowed_incoming_reply_depth?(depth) do
+  def allowed_thread_distance?(distance) do
-    max_replies_depth = Pleroma.Config.get([:instance, :federation_incoming_replies_max_depth])
+    max_distance = Pleroma.Config.get([:instance, :federation_incoming_replies_max_depth])
 
-    if max_replies_depth do
+    if max_distance && max_distance >= 0 do
-      (depth || 1) <= max_replies_depth
+      # Default depth is 0 (an object has zero distance from itself in its thread)
+      (distance || 0) <= max_distance
     else
       true
     end

lib/pleroma/web/feed/feed_view.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Feed.FeedView do

lib/pleroma/web/feed/tag_controller.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Feed.TagController do

lib/pleroma/web/feed/user_controller.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Feed.UserController do

lib/pleroma/web/masto_fe_controller.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastoFEController do

lib/pleroma/web/mastodon_api/controllers/notification_controller.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.NotificationController do

lib/pleroma/web/mastodon_api/controllers/search_controller.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.SearchController do

lib/pleroma/web/mastodon_api/controllers/status_controller.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.StatusController do

lib/pleroma/web/mastodon_api/controllers/subscription_controller.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.SubscriptionController do

lib/pleroma/web/mastodon_api/controllers/suggestion_controller.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.SuggestionController do

lib/pleroma/web/mastodon_api/controllers/timeline_controller.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.TimelineController do
@@ -10,9 +10,20 @@ defmodule Pleroma.Web.MastodonAPI.TimelineController do
 
   alias Pleroma.Pagination
   alias Pleroma.Plugs.OAuthScopesPlug
+  alias Pleroma.Plugs.RateLimiter
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
 
+  # TODO: Replace with a macro when there is a Phoenix release with
+  # https://github.com/phoenixframework/phoenix/commit/2e8c63c01fec4dde5467dbbbf9705ff9e780735e
+  # in it
+
+  plug(RateLimiter, [name: :timeline, bucket_name: :direct_timeline] when action == :direct)
+  plug(RateLimiter, [name: :timeline, bucket_name: :public_timeline] when action == :public)
+  plug(RateLimiter, [name: :timeline, bucket_name: :home_timeline] when action == :home)
+  plug(RateLimiter, [name: :timeline, bucket_name: :hashtag_timeline] when action == :hashtag)
+  plug(RateLimiter, [name: :timeline, bucket_name: :list_timeline] when action == :list)
+
   plug(OAuthScopesPlug, %{scopes: ["read:statuses"]} when action in [:home, :direct])
   plug(OAuthScopesPlug, %{scopes: ["read:lists"]} when action == :list)
 

lib/pleroma/web/mastodon_api/mastodon_api.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.MastodonAPI do

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

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.AccountView do

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

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.AppView do

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

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.NotificationView do

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

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.PollView do

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

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.MastodonAPI.StatusView do

lib/pleroma/web/metadata/feed.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Metadata.Providers.Feed do

lib/pleroma/web/metadata/rel_me.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Metadata.Providers.RelMe do

lib/pleroma/web/metadata/utils.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Metadata.Utils do