Merge pull request 'Move prune changelog entries to correct version' (#808) from norm/akkoma:prune-changelog into develop

Reviewed-on: AkkomaGang/akkoma#808

.buildpacks

@@ -1 +0,0 @@
-https://github.com/hashnuke/heroku-buildpack-elixir  

.woodpecker/build-amd64.yml

@@ -1,4 +1,5 @@
-platform: linux/amd64
+labels:
+  platform: linux/amd64
 
 depends_on:
   - test
@@ -34,7 +35,7 @@ variables:
   - &clean "(rm -rf release || true) && (rm -rf _build || true) && (rm -rf /root/.mix)"
   - &mix-clean "mix deps.clean --all && mix clean"
 
-pipeline:
+steps:
   # Canonical amd64
   debian-bookworm:
     image: hexpm/elixir:1.15.4-erlang-26.0.2-debian-bookworm-20230612

.woodpecker/build-arm64.yml

@@ -1,4 +1,5 @@
-platform: linux/arm64
+labels:
+  platform: linux/aarch64
 
 depends_on:
   - test
@@ -34,7 +35,7 @@ variables:
   - &clean "(rm -rf release || true) && (rm -rf _build || true) && (rm -rf /root/.mix)"
   - &mix-clean "mix deps.clean --all && mix clean"
 
-pipeline:
+steps:
   # Canonical arm64
   debian-bookworm:
     image: hexpm/elixir:1.15.4-erlang-26.0.2-debian-bookworm-20230612

.woodpecker/docs.yml

@@ -1,4 +1,5 @@
-platform: linux/amd64
+labels:
+  platform: linux/amd64
 
 depends_on:
   - test
@@ -45,7 +46,7 @@ variables:
   - &clean "(rm -rf release || true) && (rm -rf _build || true) && (rm -rf /root/.mix)"
   - &mix-clean "mix deps.clean --all && mix clean"
 
-pipeline:
+steps:
   docs:
     <<: *on-point-release
     secrets:

.woodpecker/lint.yml

@@ -1,4 +1,5 @@
-platform: linux/amd64
+labels:
+  platform: linux/amd64
 
 variables:
   - &scw-secrets
@@ -41,9 +42,9 @@ variables:
   - &clean "(rm -rf release || true) && (rm -rf _build || true) && (rm -rf /root/.mix)"
   - &mix-clean "mix deps.clean --all && mix clean"
 
-pipeline:
+steps:
   lint:
-    image: akkoma/ci-base:1.15-otp26
+    image: akkoma/ci-base:1.16-otp26
     <<: *on-pr-open
     environment:
       MIX_ENV: test

.woodpecker/test.yml

@@ -1,4 +1,5 @@
-platform: linux/amd64
+labels:
+  platform: linux/amd64
 
 depends_on:
   - lint
@@ -12,12 +13,6 @@ matrix:
     - 25
     - 26
   include:
-    - ELIXIR_VERSION: 1.14
-      OTP_VERSION: 25
-    - ELIXIR_VERSION: 1.15
-      OTP_VERSION: 25
-    - ELIXIR_VERSION: 1.15
-      OTP_VERSION: 26
     - ELIXIR_VERSION: 1.16
       OTP_VERSION: 26
 
@@ -73,7 +68,7 @@ services:
       POSTGRES_USER: postgres
       POSTGRES_PASSWORD: postgres
 
-pipeline:
+steps:
   test:
     image: akkoma/ci-base:${ELIXIR_VERSION}-otp${OTP_VERSION}
     <<: *on-pr-open

CHANGELOG.md

@@ -4,18 +4,66 @@ 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
+## UNRELEASED
+
+## BREAKING
+- Minimum PostgreSQL version is raised to 12
+
+## Added
+- Implement [FEP-67ff](https://codeberg.org/fediverse/fep/src/branch/main/fep/67ff/fep-67ff.md) (federation documentation)
+- Meilisearch: it is now possible to use separate keys for search and admin actions
+- New standalone `prune_orphaned_activities` mix task with configurable batch limit
+- The `prune_objects` mix task now accepts a `--limit` parameter for initial object pruning
+
+## Fixed
+- Meilisearch: order of results returned from our REST API now actually matches how Meilisearch ranks results
+
+## Changed
+- Refactored Rich Media to cache the content in the database. Fetching operations that could block status rendering have been eliminated.
+
+## 2024.04.1 (Security)
+
+## Fixed
+- Issue allowing non-owners to use media objects in posts
+- Issue allowing use of non-media objects as attachments and crashing timeline rendering
+- Issue allowing webfinger spoofing in certain situations
+
+## 2024.04
 
 ## Added
 - Support for [FEP-fffd](https://codeberg.org/fediverse/fep/src/branch/main/fep/fffd/fep-fffd.md) (proxy objects)
 - Verified support for elixir 1.16
+- Uploadfilter `Pleroma.Upload.Filter.Exiftool.ReadDescription` returns description values to the FE so they can pre fill the image description field
+  NOTE: this filter MUST be placed before `Exiftool.StripMetadata` to work
 
 ## Changed
 - Inbound pipeline error handing was modified somewhat, which should lead to less incomprehensible log spam. Hopefully.
+- Uploadfilter `Pleroma.Upload.Filter.Exiftool` was replaced by `Pleroma.Upload.Filter.Exiftool.StripMetadata`;
+  the latter strips all non-essential metadata by default but can be configured.
+  To regain the old behaviour of only stripping GPS data set `purge: ["gps:all"]`.
+- Uploadfilter `Pleroma.Upload.Filter.Exiftool` has been renamed to `Pleroma.Upload.Filter.Exiftool.StripMetadata`
+- MRF.InlineQuotePolicy now prefers to insert display URLs instead of ActivityPub IDs
+- Old accounts are no longer listed in WebFinger as aliases; this was breaking spec
 
 ## Fixed
 - Issue preventing fetching anything from IPv6-only instances
 - Issue allowing post content to leak via opengraph tags despite :estrict\_unauthenticated being set
+- Move activities no longer operate on stale user data
+- Missing definitions in our JSON-LD context
+- Issue mangling newlines in code blocks for RSS/Atom feeds
+- static\_fe squeezing non-square avatars and emoji
+- Issue leading to properly JSON-LD compacted emoji reactions being rejected
+- We now use a standard-compliant Accept header when fetching ActivityPub objects
+- /api/pleroma/notification\_settings was rejecting body parameters;
+  this also broke changing this setting via akkoma-fe
+- Issue leading to Mastodon bot accounts being rejected
+- Scope misdetection of remote posts resulting from not recognising
+  JSON-LD-compacted forms of public scope; affected e.g. federation with bovine
+- Ratelimits encountered when fetching objects are now respected; 429 responses will cause a backoff when we get one.
+
+## Removed
+- ActivityPub Client-To-Server write API endpoints have been disabled;
+  read endpoints are planned to be removed next release unless a clear need is demonstrated
 
 ## 2024.03
 

FEDERATION.md

@@ -0,0 +1,42 @@
+# Federation
+
+## Supported federation protocols and standards
+
+- [ActivityPub](https://www.w3.org/TR/activitypub/) (Server-to-Server)
+- [WebFinger](https://webfinger.net/)
+- [Http Signatures](https://datatracker.ietf.org/doc/html/draft-cavage-http-signatures)
+- [NodeInfo](https://nodeinfo.diaspora.software/)
+
+## Supported FEPs
+
+- [FEP-67ff: FEDERATION](https://codeberg.org/fediverse/fep/src/branch/main/fep/67ff/fep-67ff.md)
+- [FEP-f1d5: NodeInfo in Fediverse Software](https://codeberg.org/fediverse/fep/src/branch/main/fep/f1d5/fep-f1d5.md)
+- [FEP-fffd: Proxy Objects](https://codeberg.org/fediverse/fep/src/branch/main/fep/fffd/fep-fffd.md)
+
+## ActivityPub
+
+Akkoma mostly follows the server-to-server parts of the ActivityPub standard,
+but implements quirks for Mastodon compatibility as well as Mastodon-specific
+and custom extensions.
+
+See our documentation and Mastodon’s federation information
+linked further below for details on these quirks and extensions.
+
+Akkoma does not perform JSON-LD processing.
+
+### Required extensions
+
+#### HTTP Signatures
+All AP S2S POST requests to Akkoma instances MUST be signed.
+Depending on instance configuration the same may be true for GET requests.
+
+## Nodeinfo
+
+Akkoma provides many additional entries in its nodeinfo response,
+see the documentation linked below for details.
+
+## Additional documentation
+
+- [Akkoma’s ActivityPub extensions](https://docs.akkoma.dev/develop/development/ap_extensions/)
+- [Akkoma’s nodeinfo extensions](https://docs.akkoma.dev/develop/development/nodeinfo_extensions/)
+- [Mastodon’s federation requirements](https://github.com/mastodon/mastodon/blob/main/FEDERATION.md)

Procfile

@@ -1,2 +0,0 @@
-web: mix phx.server
-release: mix ecto.migrate

config/config.exs

@@ -63,7 +63,6 @@ config :pleroma, Pleroma.Upload,
   uploader: Pleroma.Uploaders.Local,
   filters: [],
   link_name: false,
-  proxy_remote: false,
   filename_display_max_length: 30,
   base_url: nil,
   allowed_mime_types: ["image", "audio", "video"]
@@ -189,8 +188,10 @@ config :pleroma, :http,
   receive_timeout: :timer.seconds(15),
   proxy_url: nil,
   user_agent: :default,
-  pool_size: 50,
-  adapter: []
+  pool_size: 10,
+  adapter: [],
+  # see: https://hexdocs.pm/finch/Finch.html#start_link/1
+  pool_max_idle_time: :timer.seconds(30)
 
 config :pleroma, :instance,
   name: "Akkoma",
@@ -437,8 +438,12 @@ config :pleroma, :rich_media,
     Pleroma.Web.RichMedia.Parsers.TwitterCard,
     Pleroma.Web.RichMedia.Parsers.OEmbed
   ],
-  failure_backoff: :timer.minutes(20),
-  ttl_setters: [Pleroma.Web.RichMedia.Parser.TTL.AwsSignedUrl]
+  failure_backoff: 60_000,
+  ttl_setters: [
+    Pleroma.Web.RichMedia.Parser.TTL.AwsSignedUrl,
+    Pleroma.Web.RichMedia.Parser.TTL.Opengraph
+  ],
+  max_body: 5_000_000
 
 config :pleroma, :media_proxy,
   enabled: false,
@@ -576,7 +581,9 @@ config :pleroma, Oban,
     mute_expire: 5,
     search_indexing: 10,
     nodeinfo_fetcher: 1,
-    database_prune: 1
+    database_prune: 1,
+    rich_media_backfill: 2,
+    rich_media_expiration: 2
   ],
   plugins: [
     Oban.Plugins.Pruner,
@@ -592,7 +599,8 @@ config :pleroma, :workers,
   retries: [
     federator_incoming: 5,
     federator_outgoing: 5,
-    search_indexing: 2
+    search_indexing: 2,
+    rich_media_backfill: 3
   ],
   timeout: [
     activity_expiration: :timer.seconds(5),
@@ -614,7 +622,8 @@ config :pleroma, :workers,
     mute_expire: :timer.seconds(5),
     search_indexing: :timer.seconds(5),
     nodeinfo_fetcher: :timer.seconds(10),
-    database_prune: :timer.minutes(10)
+    database_prune: :timer.minutes(10),
+    rich_media_backfill: :timer.seconds(30)
   ]
 
 config :pleroma, Pleroma.Formatter,
@@ -813,8 +822,10 @@ config :pleroma, :modules, runtime_dir: "instance/modules"
 config :pleroma, configurable_from_database: false
 
 config :pleroma, Pleroma.Repo,
-  parameters: [gin_fuzzy_search_limit: "500"],
-  prepare: :unnamed
+  parameters: [
+    gin_fuzzy_search_limit: "500",
+    plan_cache_mode: "force_custom_plan"
+  ]
 
 config :pleroma, :majic_pool, size: 2
 

config/description.exs

@@ -118,14 +118,6 @@ config :pleroma, :config_description, [
           "font"
         ]
       },
-      %{
-        key: :proxy_remote,
-        type: :boolean,
-        description: """
-        Proxy requests to the remote uploader.\n
-        Useful if media upload endpoint is not internet accessible.
-        """
-      },
       %{
         key: :filename_display_max_length,
         type: :integer,
@@ -222,6 +214,26 @@ config :pleroma, :config_description, [
       }
     ]
   },
+  %{
+    group: :pleroma,
+    key: Pleroma.Upload.Filter.Exiftool.StripMetadata,
+    type: :group,
+    description: "Strip specified metadata from image uploads",
+    children: [
+      %{
+        key: :purge,
+        description: "Metadata fields or groups to strip",
+        type: {:list, :string},
+        suggestions: ["all", "CommonIFD0"]
+      },
+      %{
+        key: :preserve,
+        description: "Metadata fields or groups to preserve (takes precedence over stripping)",
+        type: {:list, :string},
+        suggestions: ["ColorSpaces", "Orientation"]
+      }
+    ]
+  },
   %{
     group: :pleroma,
     key: Pleroma.Emails.Mailer,
@@ -2697,8 +2709,8 @@ config :pleroma, :config_description, [
       %{
         key: :pool_size,
         type: :integer,
-        description: "Number of concurrent outbound HTTP requests to allow. Default 50.",
-        suggestions: [50]
+        description: "Number of concurrent outbound HTTP requests to allow PER HOST. Default 10.",
+        suggestions: [10]
       },
       %{
         key: :adapter,
@@ -2721,6 +2733,13 @@ config :pleroma, :config_description, [
             ]
           }
         ]
+      },
+      %{
+        key: :pool_max_idle_time,
+        type: :integer,
+        description:
+          "Number of seconds to retain an HTTP pool; pool will remain if actively in use. Default 30 seconds (in ms).",
+        suggestions: [30_000]
       }
     ]
   },

config/dokku.exs

@@ -1,25 +0,0 @@
-import Config
-
-config :pleroma, Pleroma.Web.Endpoint,
-  http: [
-    port: String.to_integer(System.get_env("PORT") || "4000"),
-    protocol_options: [max_request_line_length: 8192, max_header_value_length: 8192]
-  ],
-  protocol: "http",
-  secure_cookie_flag: false,
-  url: [host: System.get_env("APP_HOST"), scheme: "https", port: 443],
-  secret_key_base: "+S+ULgf7+N37c/lc9K66SMphnjQIRGklTu0BRr2vLm2ZzvK0Z6OH/PE77wlUNtvP"
-
-database_url =
-  System.get_env("DATABASE_URL") ||
-    raise """
-    environment variable DATABASE_URL is missing.
-    For example: ecto://USER:PASS@HOST/DATABASE
-    """
-
-config :pleroma, Pleroma.Repo,
-  # ssl: true,
-  url: database_url,
-  pool_size: String.to_integer(System.get_env("POOL_SIZE") || "10")
-
-config :pleroma, :instance, name: "#{System.get_env("APP_NAME")} CI Instance"

config/test.exs

@@ -63,7 +63,8 @@ config :tesla, adapter: Tesla.Mock
 config :pleroma, :rich_media,
   enabled: false,
   ignore_hosts: [],
-  ignore_tld: ["local", "localdomain", "lan"]
+  ignore_tld: ["local", "localdomain", "lan"],
+  max_body: 2_000_000
 
 config :pleroma, :instance,
   multi_factor_authentication: [
@@ -141,6 +142,8 @@ config :phoenix, :plug_init_mode, :runtime
 config :pleroma, :instances_favicons, enabled: false
 config :pleroma, :instances_nodeinfo, enabled: false
 
+config :pleroma, Pleroma.Web.RichMedia.Backfill, provider: Pleroma.Web.RichMedia.Backfill
+
 if File.exists?("./config/test.secret.exs") do
   import_config "test.secret.exs"
 else

coveralls.json

@@ -1,7 +0,0 @@
-{
-  "skip_files": [
-    "test/support",
-    "lib/mix/tasks/pleroma/benchmark.ex",
-    "lib/credo/check/consistency/file_location.ex"
-  ]
-}

diagnostic-tools/binary-leak-checker.sh

@@ -0,0 +1,10 @@
+if [ "$#" -ne 2 ]; then
+	echo "Usage: binary-leak-checker.sh <nodename> <erlang cookie>"
+	exit 1
+fi
+
+echo "The command you want to run is:
+:recon.bin_leak(10)
+"
+
+iex --sname debug --remsh $1 --erl "-setcookie $2" 

docs/docs/administration/CLI_tasks/database.md

@@ -50,9 +50,39 @@ This will prune remote posts older than 90 days (configurable with [`config :ple
 
 - `--keep-threads` - Don't prune posts when they are part of a thread where at least one post has seen local interaction (e.g. one of the posts is a local post, or is favourited by a local user, or has been repeated by a local user...). It also wont delete posts when at least one of the posts in that thread is kept (e.g. because one of the posts has seen recent activity).
 - `--keep-non-public` - Keep non-public posts like DM's and followers-only, even if they are remote.
+- `--limit` - limits how many remote posts get pruned. This limit does **not** apply to any of the follow up jobs. If wanting to keep the database load in check it is thus advisable to run the standalone `prune_orphaned_activities` task with a limit afterwards instead of passing `--prune-orphaned-activities` to this task.
 - `--prune-orphaned-activities` - Also prune orphaned activities afterwards. Activities are things like Like, Create, Announce, Flag (aka reports)... They can significantly help reduce the database size.
 - `--vacuum` - Run `VACUUM FULL` after the objects are pruned. This should not be used on a regular basis, but is useful if your instance has been running for a long time before pruning.
 
+## Prune orphaned activities from the database
+
+This will prune activities which are no longer referenced by anything.
+Such activities might be the result of running `prune_objects` without `--prune-orphaned-activities`.
+The same notes and warnings apply as for `prune_objects`.
+
+The task will print out how many rows were freed in total in its last
+line of output in the form `Deleted 345 rows`.  
+When running the job in limited batches this can be used to determine
+when all orphaned activities have been deleted.
+
+=== "OTP"
+
+    ```sh
+    ./bin/pleroma_ctl database prune_orphaned_activities [option ...]
+    ```
+
+=== "From Source"
+
+    ```sh
+    mix pleroma.database prune_orphaned_activities [option ...]
+    ```
+
+### Options
+
+- `--limit n` - Only delete up to `n` activities in each query making up this job, i.e. if this job runs two queries at most `2n` activities will be deleted. Running this task repeatedly in limited batches can help maintain the instance’s responsiveness while still freeing up some space.
+- `--no-singles` - Do not delete activites referencing single objects
+- `--no-arrays` - Do not delete activites referencing an array of objects
+
 ## Create a conversation for all existing DMs
 
 Can be safely re-run

docs/docs/administration/CLI_tasks/instance.md

@@ -37,7 +37,8 @@ If any of the options are left unspecified, you will be prompted interactively.
 - `--static-dir <path>` - the directory custom public files should be read from (custom emojis, frontend bundle overrides, robots.txt, etc.)
 - `--listen-ip <ip>` - the ip the app should listen to, defaults to 127.0.0.1
 - `--listen-port <port>` - the port the app should listen to, defaults to 4000
-- `--strip-uploads <Y|N>` - use ExifTool to strip uploads of sensitive location data
+- `--strip-uploads-metadata <Y|N>` - use ExifTool to strip uploads of metadata when possible
+- `--read-uploads-description <Y|N>` - use ExifTool to read image descriptions from uploads
 - `--anonymize-uploads <Y|N>` - randomize uploaded filenames
 - `--dedupe-uploads <Y|N>` - store files based on their hash to reduce data storage requirements if duplicates are uploaded with different filenames
 - `--skip-release-env` - skip generation the release environment file

docs/docs/clients.md

@@ -1,12 +1,15 @@
 # Akkoma Clients
-Note: Additional clients may work, but these are known to work with Akkoma.
-Apps listed here might not support all of Akkoma's features.
+This is a list of clients that are known to work with Akkoma.
+
+!!! warning
+    **Clients listed here are not officially supported by the Akkoma project.**
+    Some Akkoma features may be unsupported by these clients.
 
 ## Multiplatform
 ### Kaiteki
 - Homepage: <https://kaiteki.app/>
 - Source Code: <https://github.com/Kaiteki-Fedi/Kaiteki>
-- Contact: [@kaiteki@fedi.software](https://fedi.software/@Kaiteki)
+- Contact: [@kaiteki@social.kaiteki.app](https://social.kaiteki.app/@kaiteki)
 - Platforms: Web, Windows, Linux, Android
 - Features: MastoAPI, Supports multiple backends
 
@@ -38,12 +41,6 @@ Apps listed here might not support all of Akkoma's features.
 - Platforms: Android
 - Features: MastoAPI, No Streaming, Emoji Reactions, Text Formatting, FE Stickers
 
-### Fedi
-- Homepage: <https://www.fediapp.com/>
-- Source Code: Proprietary, but gratis
-- Platforms: iOS, Android
-- Features: MastoAPI, Pleroma-specific features like Reactions
-
 ### Tusky
 - Homepage: <https://tuskyapp.github.io/>
 - Source Code: <https://github.com/tuskyapp/Tusky>
@@ -51,12 +48,18 @@ Apps listed here might not support all of Akkoma's features.
 - Platforms: Android
 - Features: MastoAPI, No Streaming
 
+### Subway Tooter
+- Source Code: <https://github.com/tateisu/SubwayTooter/>
+- Contact: [@SubwayTooter@mastodon.juggler.jp](https://mastodon.juggler.jp/@SubwayTooter)
+- Platforms: Android
+- Features: MastoAPI, Editing, Emoji Reactions (including custom emoji)
+
 ## Alternative Web Interfaces
-### Pinafore
-- Note: Pinafore is unmaintained (See [the author's original article](https://nolanlawson.com/2023/01/09/retiring-pinafore/) for details)
-- Homepage: <https://pinafore.social/>
-- Source Code: <https://github.com/nolanlawson/pinafore>
-- Contact: [@pinafore@mastodon.technology](https://mastodon.technology/users/pinafore)
+### Enafore
+- An actively developed fork of Pinafore with improved Akkoma support
+- Homepage: <https://enafore.social/>
+- Source Code: <https://github.com/enafore/enafore>
+- Contact: [@enfore@enafore.social](https://meta.enafore.social/@enafore)
 - Features: MastoAPI, No Streaming
 
 ### Sengi

docs/docs/configuration/cheatsheet.md

@@ -63,6 +63,8 @@ To add configuration to your config file, you can copy it from the base config.
 * `local_bubble`: Array of domains representing instances closely related to yours. Used to populate the `bubble` timeline. e.g `["example.com"]`, (default: `[]`)
 * `languages`: List of Language Codes used by the instance. This is used to try and set a default language from the frontend. It will try and find the first match between the languages set here and the user's browser languages. It will default to the first language in this setting if there is no match.. (default `["en"]`)
 * `export_prometheus_metrics`: Enable prometheus metrics, served at `/api/v1/akkoma/metrics`, requiring the `admin:metrics` oauth scope.
+* `privileged_staff`: Set to `true` to give moderators access to a few higher responsibility actions.
+* `federated_timeline_available`: Set to `false` to remove access to the federated timeline for all users.
 
 ## :database
 * `improved_hashtag_timeline`: Setting to force toggle / force disable improved hashtags timeline. `:enabled` forces hashtags to be fetched from `hashtags` table for hashtags timeline. `:disabled` forces object-embedded hashtags to be used (slower). Keep it `:auto` for automatic behaviour (it is auto-set to `:enabled` [unless overridden] when HashtagsTableMigrator completes).
@@ -603,7 +605,6 @@ the source code is here: [kocaptcha](https://github.com/koto-bank/kocaptcha). Th
 * `link_name`: When enabled Akkoma will add a `name` parameter to the url of the upload, for example `https://instance.tld/media/corndog.png?name=corndog.png`. This is needed to provide the correct filename in Content-Disposition headers
 * `base_url`: The base URL to access a user-uploaded file; MUST be configured explicitly.
   Using a (sub)domain distinct from the instance endpoint is **strongly** recommended. A good value might be `https://media.myakkoma.instance/media/`. 
-* `proxy_remote`: If you're using a remote uploader, Akkoma will proxy media requests instead of redirecting to it.
 * `proxy_opts`: Proxy options, see `Pleroma.ReverseProxy` documentation.
 * `filename_display_max_length`: Set max length of a filename to display. 0 = no limit. Default: 30.
 
@@ -654,9 +655,17 @@ This filter replaces the declared filename (not the path) of an upload.
 
 * `text`: Text to replace filenames in links. If empty, `{random}.extension` will be used. You can get the original filename extension by using `{extension}`, for example `custom-file-name.{extension}`.
 
-#### Pleroma.Upload.Filter.Exiftool
+#### Pleroma.Upload.Filter.Exiftool.StripMetadata
 
-This filter only strips the GPS and location metadata with Exiftool leaving color profiles and attributes intact.
+This filter strips metadata with Exiftool leaving color profiles and orientation intact.
+
+* `purge`: List of Exiftool tag names or tag group names to purge
+* `preserve`: List of Exiftool tag names or tag group names to preserve even if they occur in the purge list
+
+
+#### Pleroma.Upload.Filter.Exiftool.ReadDescription
+
+This filter reads the ImageDescription and iptc:Caption-Abstract fields with Exiftool so clients can prefill the media description field.
 
 No specific configuration.
 

docs/docs/configuration/howto_mediaproxy.md

@@ -6,37 +6,17 @@ With the `mediaproxy` function you can use nginx to cache this content, so users
 
 ## Activate it
 
-* Edit your nginx config and add the following location to your main server block:
-```
-location /proxy {
-        return 404;
-}
-```
-
 * Set up a subdomain for the proxy with its nginx config on the same machine
-  *(the latter is not strictly required, but for simplicity we’ll assume so)*
-* In this subdomain’s server block add
-```
-location /proxy {
-        proxy_cache akkoma_media_cache;
-        proxy_cache_lock on;
-        proxy_pass http://localhost:4000;
-}
-```
-Also add the following on top of the configuration, outside of the `server` block:
-```
-proxy_cache_path /tmp/akkoma-media-cache levels=1:2 keys_zone=akkoma_media_cache:10m max_size=10g inactive=720m use_temp_path=off;
-```
-If you came here from one of the installation guides, take a look at the example configuration `/installation/nginx/akkoma.nginx`, where this part is already included.
-
+* Edit the nginx config for the upload/MediaProxy subdomain to point to the subdomain that has been set up
 * Append the following to your `prod.secret.exs` or `dev.secret.exs` (depends on which mode your instance is running):
-```
+```elixir
+# Replace media.example.td with the subdomain you set up earlier
 config :pleroma, :media_proxy,
       enabled: true,
       proxy_opts: [
             redirect_on_failure: true
       ],
-      base_url: "https://cache.akkoma.social"
+      base_url: "https://media.example.tld"
 ```
 You **really** should use a subdomain to serve proxied files; while we will fix bugs resulting from this, serving arbitrary remote content on your main domain namespace is a significant attack surface.
 

docs/docs/configuration/i2p.md

@@ -130,59 +130,26 @@ config :pleroma, :http_security,
   enabled: false
 ```
 
-Use this as the Nginx config:
-```
-proxy_cache_path /tmp/akkoma-media-cache levels=1:2 keys_zone=akkoma_media_cache:10m max_size=10g inactive=720m use_temp_path=off;
-# The above already exists in a clearnet instance's config.
-# If not, add it.
-
-server {
-    listen 127.0.0.1:14447;
-    server_name youri2paddress;
-
-    # Comment to enable logs
-    access_log /dev/null;
-    error_log /dev/null;
-
-    gzip_vary on;
-    gzip_proxied any;
-    gzip_comp_level 6;
-    gzip_buffers 16 8k;
-    gzip_http_version 1.1;
-    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript application/activity+json application/atom+xml;
-
-    client_max_body_size 16m;
-
-    location / {
-
+In the Nginx config, add the following into the `location /` block:
+```nginx
         add_header X-XSS-Protection "0";
         add_header X-Permitted-Cross-Domain-Policies none;
         add_header X-Frame-Options DENY;
         add_header X-Content-Type-Options nosniff;
         add_header Referrer-Policy same-origin;
-
-        proxy_http_version 1.1;
-        proxy_set_header Upgrade $http_upgrade;
-        proxy_set_header Connection "upgrade";
-        proxy_set_header Host $http_host;
-
-        proxy_pass http://localhost:4000;
-
-        client_max_body_size 16m;
-    }
-
-    location /proxy {
-        proxy_cache akkoma_media_cache;
-        proxy_cache_lock on;
-        proxy_ignore_client_abort on;
-        proxy_pass http://localhost:4000;
-    }
-}
 ```
-reload Nginx:
+
+Change the `listen` directive to the following:
+```nginx
+listen 127.0.0.1:14447;
 ```
-systemctl stop i2pd.service --no-block
-systemctl start i2pd.service
+
+Set `server_name` to your i2p address.
+
+Reload Nginx:
+```
+systemctl restart i2pd.service --no-block
+systemctl reload nginx.service
 ```
 *Notice:* The stop command initiates a graceful shutdown process, i2pd stops after finishing to route transit tunnels (maximum 10 minutes).
 

docs/docs/configuration/onion_federation.md

@@ -74,56 +74,23 @@ config :pleroma, :http_security,
   enabled: false
 ```
 
-Use this as the Nginx config:
-```
-proxy_cache_path /tmp/akkoma-media-cache levels=1:2 keys_zone=akkoma_media_cache:10m max_size=10g inactive=720m use_temp_path=off;
-# The above already exists in a clearnet instance's config.
-# If not, add it.
-
-server {
-    listen 127.0.0.1:8099;
-    server_name youronionaddress;
-
-    # Comment to enable logs
-    access_log /dev/null;
-    error_log /dev/null;
-
-    gzip_vary on;
-    gzip_proxied any;
-    gzip_comp_level 6;
-    gzip_buffers 16 8k;
-    gzip_http_version 1.1;
-    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript application/activity+json application/atom+xml;
-
-    client_max_body_size 16m;
-
-    location / {
-
+In the Nginx config, add the following into the `location /` block:
+```nginx
         add_header X-XSS-Protection "0";
         add_header X-Permitted-Cross-Domain-Policies none;
         add_header X-Frame-Options DENY;
         add_header X-Content-Type-Options nosniff;
         add_header Referrer-Policy same-origin;
-
-        proxy_http_version 1.1;
-        proxy_set_header Upgrade $http_upgrade;
-        proxy_set_header Connection "upgrade";
-        proxy_set_header Host $http_host;
-
-        proxy_pass http://localhost:4000;
-
-        client_max_body_size 16m;
-    }
-
-    location /proxy {
-        proxy_cache akkoma_media_cache;
-        proxy_cache_lock on;
-        proxy_ignore_client_abort on;
-        proxy_pass http://localhost:4000;
-    }
-}
 ```
-reload Nginx:
+
+Change the `listen` directive to the following:
+```nginx
+listen 127.0.0.1:8099;
+```
+
+Set the `server_name` to your onion address.
+
+Reload Nginx:
 ```
 systemctl reload nginx
 ```

docs/docs/configuration/postgresql.md

@@ -4,47 +4,10 @@ Akkoma performance is largely dependent on performance of the underlying databas
 
 ## PGTune
 
-[PgTune](https://pgtune.leopard.in.ua) can be used to get recommended settings. Be sure to set "Number of Connections" to 20, otherwise it might produce settings hurtful to database performance. It is also recommended to not use "Network Storage" option.
+[PgTune](https://pgtune.leopard.in.ua) can be used to get recommended settings. Make sure to set the DB type to "Online transaction processing system" for optimal performance. Also set the number of connections to between 25 and 30. This will allow each connection to have access to more resources while still leaving some room for running maintenance tasks while the instance is still running. 
 
-If your server runs other services, you may want to take that into account. E.g. if you have 4G ram, but 1G of it is already used for other services, it may be better to tell PGTune you only have 3G. In the end, PGTune only provides recomended settings, you can always try to finetune further.
+It is also recommended to not use "Network Storage" option.
 
-### Example configurations
+If your server runs other services, you may want to take that into account. E.g. if you have 4G ram, but 1G of it is already used for other services, it may be better to tell PGTune you only have 3G.
 
-Here are some configuration suggestions for PostgreSQL 10+.
-
-#### 1GB RAM, 1 CPU
-```
-shared_buffers = 256MB
-effective_cache_size = 768MB
-maintenance_work_mem = 64MB
-work_mem = 13107kB
-```
-
-#### 2GB RAM, 2 CPU
-```
-shared_buffers = 512MB
-effective_cache_size = 1536MB
-maintenance_work_mem = 128MB
-work_mem = 26214kB
-max_worker_processes = 2
-max_parallel_workers_per_gather = 1
-max_parallel_workers = 2
-```
-
-## Disable generic query plans
-
-When PostgreSQL receives a query, it decides on a strategy for searching the requested data, this is called a query plan. The query planner has two modes: generic and custom. Generic makes a plan for all queries of the same shape, ignoring the parameters, which is then cached and reused. Custom, on the contrary, generates a unique query plan based on query parameters.
-
-By default PostgreSQL has an algorithm to decide which mode is more efficient for particular query, however this algorithm has been observed to be wrong on some of the queries Akkoma sends, leading to serious performance loss. Therefore, it is recommended to disable generic mode.
-
-
-Akkoma already avoids generic query plans by default, however the method it uses is not the most efficient because it needs to be compatible with all supported PostgreSQL versions. For PostgreSQL 12 and higher additional performance can be gained by adding the following to Akkoma configuration:
-```elixir
-config :pleroma, Pleroma.Repo,
-  prepare: :named,
-  parameters: [
-    plan_cache_mode: "force_custom_plan"
-  ]
-```
-
-A more detailed explaination of the issue can be found at <https://blog.soykaf.com/post/postgresql-elixir-troubles/>.
+In the end, PGTune only provides recomended settings, you can always try to finetune further.

docs/docs/configuration/search.md

@@ -33,6 +33,7 @@ indexes faster when it can process many posts in a single batch.
 > config :pleroma, Pleroma.Search.Meilisearch,
 >    url: "http://127.0.0.1:7700/",
 >    private_key: "private key",
+>    search_key: "search key",
 >    initial_indexing_chunk_size: 100_000
 
 Information about setting up meilisearch can be found in the
@@ -45,7 +46,7 @@ is hardly usable on a somewhat big instance.
 ### Private key authentication (optional)
 
 To set the private key, use the `MEILI_MASTER_KEY` environment variable when starting. After setting the _master key_,
-you have to get the _private key_, which is actually used for authentication.
+you have to get the _private key_ and possibly _search key_, which are actually used for authentication.
 
 === "OTP"
     ```sh
@@ -57,7 +58,11 @@ you have to get the _private key_, which is actually used for authentication.
     mix pleroma.search.meilisearch show-keys <your master key here>
     ```
 
-You will see a "Default Admin API Key", this is the key you actually put into your configuration file.
+You will see a "Default Admin API Key", this is the key you actually put into
+your configuration file as `private_key`. You should also see a
+"Default Search API key", put this into your config as `search_key`.
+If your version of Meilisearch only showed the former,
+just leave `search_key` completely unset in Akkoma's config.
 
 ### Initial indexing
 

docs/docs/development/API/admin_api.md

@@ -1033,7 +1033,6 @@ Most of the settings will be applied in `runtime`, this means that you don't nee
   - `:pools`
 - partially settings inside these keys:
   - `:seconds_valid` in `Pleroma.Captcha`
-  - `:proxy_remote` in `Pleroma.Upload`
   - `:upload_limit` in `:instance`
 
 - Params:
@@ -1094,7 +1093,6 @@ List of settings which support only full update by subkey:
         {"tuple": [":uploader", "Pleroma.Uploaders.Local"]},
         {"tuple": [":filters", ["Pleroma.Upload.Filter.Dedupe"]]},
         {"tuple": [":link_name", true]},
-        {"tuple": [":proxy_remote", false]},
         {"tuple": [":proxy_opts", [
           {"tuple": [":redirect_on_failure", false]},
           {"tuple": [":max_body_length", 1048576]},

docs/docs/development/ap_extensions.md

@@ -4,7 +4,6 @@
 The following endpoints are additionally present into our actors.
 
 - `oauthRegistrationEndpoint` (`http://litepub.social/ns#oauthRegistrationEndpoint`)
-- `uploadMedia` (`https://www.w3.org/ns/activitystreams#uploadMedia`)
 
 ### oauthRegistrationEndpoint
 
@@ -12,6 +11,279 @@ Points to MastodonAPI `/api/v1/apps` for now.
 
 See <https://docs.joinmastodon.org/methods/apps/>
 
+## Emoji reactions
+
+Emoji reactions are implemented as a new activity type `EmojiReact`.
+A single user is allowed to react multiple times with different emoji to the
+same post. However, they may only react at most once with the same emoji.
+Repeated reaction from the same user with the same emoji are to be ignored.
+Emoji reactions are also distinct from `Like` activities and a user may both
+`Like` and react to a post.
+
+!!! note
+    Misskey also supports emoji reactions, but the implementations differs.
+    It equates likes and reactions and only allows a single reaction per post.
+
+The emoji is placed in the `content` field of the activity
+and the `object` property points to the note reacting to.
+
+Emoji can either be any Unicode emoji sequence or a custom emoji.
+The latter must place their shortcode, including enclosing colons,
+into `content` and put the emoji object inside the `tag` property.
+The `tag` property MAY be omitted for Unicode emoji.
+
+An example reaction with a Unicode emoji:
+```json
+{
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    "https://example.org/schemas/litepub-0.1.jsonld",
+    {
+      "@language": "und"
+    }
+  ],
+  "type": "EmojiReact",
+  "id": "https://example.org/activities/23143872a0346141",
+  "actor": "https://example.org/users/akko",
+  "nickname": "akko",
+  "to": ["https://remote.example/users/diana", "https://example.org/users/akko/followers"],
+  "cc": ["https://www.w3.org/ns/activitystreams#Public"],
+  "content": "🧡",
+  "object": "https://remote.example/objects/9f0e93499d8314a9"
+}
+```
+
+An example reaction with a custom emoji:
+```json
+{
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    "https://example.org/schemas/litepub-0.1.jsonld",
+    {
+      "@language": "und"
+    }
+  ],
+  "type": "EmojiReact",
+  "id": "https://example.org/activities/d75586dec0541650",
+  "actor": "https://example.org/users/akko",
+  "nickname": "akko",
+  "to": ["https://remote.example/users/diana", "https://example.org/users/akko/followers"],
+  "cc": ["https://www.w3.org/ns/activitystreams#Public"],
+  "content": ":mouse:",
+  "object": "https://remote.example/objects/9f0e93499d8314a9",
+  "tag": [{
+    "type": "Emoji",
+    "id": null,
+    "name": "mouse",
+    "icon": {
+      "type": "Image",
+      "url": "https://example.org/emoji/mouse/mouse.png"
+    }
+  }]
+}
+```
+
+!!! note
+    Although an emoji reaction can only contain a single emoji,
+    for compatibility with older versions of Pleroma and Akkoma,
+    it is recommended to wrap the emoji object in a single-element array.
+
+When reacting with a remote custom emoji do not include the remote domain in `content`’s shortcode
+*(unlike in our REST API which needs the domain)*:
+```json
+{
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    "https://example.org/schemas/litepub-0.1.jsonld",
+    {
+      "@language": "und"
+    }
+  ],
+  "type": "EmojiReact",
+  "id": "https://example.org/activities/7993dcae98d8d5ec",
+  "actor": "https://example.org/users/akko",
+  "nickname": "akko",
+  "to": ["https://remote.example/users/diana", "https://example.org/users/akko/followers"],
+  "cc": ["https://www.w3.org/ns/activitystreams#Public"],
+  "content": ":hug:",
+  "object": "https://remote.example/objects/9f0e93499d8314a9",
+  "tag": [{
+    "type": "Emoji",
+    "id": "https://other.example/emojis/hug",
+    "name": "hug",
+    "icon": {
+      "type": "Image",
+      "url": "https://other.example/files/b71cea432b3fad67.webp"
+    }
+  }]
+}
+```
+
+Emoji reactions can be retracted using a standard `Undo` activity:
+```json
+{
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    "http://example.org/schemas/litepub-0.1.jsonld",
+    {
+      "@language": "und"
+    }
+  ],
+  "type": "Undo",
+  "id": "http://example.org/activities/4685792e-efb6-4309-b508-ae4f355dd695",
+  "actor": "https://example.org/users/akko",
+  "to": ["https://remote.example/users/diana", "https://example.org/users/akko/followers"],
+  "cc": ["https://www.w3.org/ns/activitystreams#Public"],
+  "object": "https://example.org/activities/23143872a0346141"
+}
+```
+
+## User profile backgrounds
+
+Akkoma federates user profile backgrounds the same way as Sharkey.
+
+An actors ActivityPub representation contains an additional
+`backgroundUrl` property containing an `Image` object. This property
+belongs to the `"sharkey": "https://joinsharkey.org/ns#"` namespace.
+
+## Quote Posts
+
+Akkoma allows referencing a single other note as a quote,
+which will be prominently displayed in the interface.
+
+The quoted post is referenced by its ActivityPub id in the `quoteUri` property.
+
+!!! note
+    Old Misskey only understood and modern Misskey still prefers
+    the `_misskey_quote` property for this. Similar some other older
+    software used `quoteUrl` or `quoteURL`.  
+    All current implementations with quote support understand `quoteUri`.
+
+Example:
+```json
+{
+  "@context": [
+    "https://www.w3.org/ns/activitystreams",
+    "https://example.org/schemas/litepub-0.1.jsonld",
+    {
+      "@language": "und"
+    }
+  ],
+  "type": "Note",
+  "id": "https://example.org/activities/85717e587f95d5c0",
+  "actor": "https://example.org/users/akko",
+  "to": ["https://remote.example/users/diana", "https://example.org/users/akko/followers"],
+  "cc": ["https://www.w3.org/ns/activitystreams#Public"],
+  "context": "https://example.org/contexts/1",
+  "content": "Look at that!",
+  "quoteUri": "http://remote.example/status/85717e587f95d5c0",
+  "contentMap": {
+    "en": "Look at that!"
+  },
+  "source": {
+    "content": "Look at that!",
+    "mediaType": "text/plain"
+  },
+  "published": "2024-04-06T23:40:28Z",
+  "updated": "2024-04-06T23:40:28Z",
+  "attachemnt": [],
+  "tag": []
+}
+```
+
+## Threads
+
+Akkoma assigns all posts of the same thread the same `context`. This is a
+standard ActivityPub property but its meaning is left vague. Akkoma will
+always treat posts with identical `context` as part of the same thread.
+
+`context` must not be assumed to hold any meaning or be dereferencable.
+
+Incoming posts without `context` will be assigned a new context.
+
+!!! note
+    Mastodon uses the non-standard `conversation` property for the same purpose
+    *(named after an older OStatus property)*. For incoming posts without
+    `context` but with `converstions` Akkoma will use the value from
+    `conversations` to fill in `context`.
+    For outgoing posts Akkoma will duplicate the context into `conversation`.
+
+## Post Source
+
+Unlike Mastodon, Akkoma supports drafting posts in multiple source formats
+besides plaintext, like Markdown or MFM. The original input is preserved
+in the standard ActivityPub `source` property *(not supported by Mastodon)*.
+Still, `content` will always be present and contain the prerendered HTML form.
+
+Supported `mediaType` include:
+- `text/plain`
+- `text/markdown`
+- `text/bbcode`
+- `text/x.misskeymarkdown`
+
+## Post Language
+
+!!! note
+    This is also supported in and compatible with Mastodon, but since
+    joinmastodon.org doesn’t document it yet it is included here.
+    [GoToSocial](https://docs.gotosocial.org/en/latest/federation/federating_with_gotosocial/#content-contentmap-and-language)
+    has a more refined version of this which can correctly deal with multiple language entries.
+
+A post can indicate its language by including a `contentMap` object
+which contains a sub key named after the language’s ISO 639-1 code
+and it’s content identical to the post’s `content` field.
+
+Currently Akkoma, just like Mastodon, only properly supports a single language entry,
+in case of multiple entries a random language will be picked.  
+Furthermore, Akkoma currently only reads the `content` field
+and never the value from `contentMap`.
+
+## Local post scope
+
+Post using this scope will never federate to other servers
+but for the sake of completeness it is listed here.
+
+In addition to the usual scopes *(public, unlisted, followers-only, direct)*
+Akkoma supports an “unlisted” post scope. Such posts will not federate to
+other instances and only be shown to logged-in users on the same instance.
+It is included into the local timeline.  
+This may be useful to discuss or announce instance-specific policies and topics.
+
+A post is addressed to the local scope by including `<base url of instance>/#Public`
+in its `to` field. E.g. if the instance is on `https://example.org` it would use
+`https://example.org/#Public`.
+
+An implementation creating a new post MUST NOT address both the local and
+general public scope `as:Public` at the same time. A post addressing the local
+scope MUST NOT be sent to other instances or be possible to fetch by other
+instances regardless of potential other listed addressees.
+
+When receiving a remote post addressing both the public scope and what appears
+to be a local-scope identifier, the post SHOULD be treated without assigning any
+special meaning to the potential local-scope identifier.
+
+!!! note
+    Misskey-derivatives have a similar concept of non-federated posts,
+    however those are also shown publicly on the local web interface
+    and are thus visible to non-members.
+
+## List post scope
+
+Messages originally addressed to a custom list will contain
+a `listMessage` field with an unresolvable pseudo ActivityPub id.
+
+# Deprecated and Removed Extensions
+
+The following extensions were used in the past but have been dropped.
+Documentation is retained here as a reference and since old objects might
+still contains related fields.
+
+## Actor endpoints
+
+The following endpoints used to be present:
+
+- `uploadMedia` (`https://www.w3.org/ns/activitystreams#uploadMedia`)
+
 ### uploadMedia
 
 Inspired by <https://www.w3.org/wiki/SocialCG/ActivityPub/MediaUpload>, it is part of the ActivityStreams namespace because it used to be part of the ActivityPub specification and got removed from it.
@@ -20,9 +292,8 @@ Content-Type: multipart/form-data
 
 Parameters:
 - (required) `file`: The file being uploaded
-- (optionnal) `description`: A plain-text description of the media, for accessibility purposes.
+- (optional) `description`: A plain-text description of the media, for accessibility purposes.
 
 Response: HTTP 201 Created with the object into the body, no `Location` header provided as it doesn't have an `id`
 
-The object given in the reponse should then be inserted into an Object's `attachment` field.
-
+The object given in the response should then be inserted into an Object's `attachment` field.

docs/docs/development/nodeinfo_extensions.md

@@ -0,0 +1,141 @@
+# Nodeinfo Extensions
+
+Akkoma currently implements version 2.0 and 2.1 of nodeinfo spec,
+but provides the following additional fields.
+
+## metadata
+
+The spec leaves the content of `metadata` up to implementations
+and indeed Akkoma adds many fields here apart from the commonly
+found `nodeName` and `nodeDescription` fields.
+
+### accountActivationRequired
+Whether or not users need to confirm their email before completing registration.
+*(boolean)*
+
+!!! note
+    Not to be confused with account approval, where each registration needs to
+    be manually approved by an admin. Account approval has no nodeinfo entry.
+
+### features
+
+Array of strings denoting supported server features. E.g. a server supporting
+quote posts should include a `"quote_posting"` entry here.
+
+A non-exhaustive list of possible features:
+- `polls`
+- `quote_posting`
+- `editing`
+- `bubble_timeline`
+- `pleroma_emoji_reactions` *(Unicode emoji)*
+- `custom_emoji_reactions`
+- `akkoma_api`
+- `akkoma:machine_translation`
+- `mastodon_api`
+- `pleroma_api`
+
+### federatedTimelineAvailable
+Whether or not the “federated timeline”, i.e. a timeline containing posts from
+the entire known network, is made available.
+*(boolean)*
+
+### federation
+This section is optional and can contain various custom keys describing federation policies.
+The following are required to be presented:
+- `enabled` *(boolean)* whether the server federates at all
+
+A non-exhaustive list of optional keys:
+- `exclusions` *(boolean)* whether some federation policies are withheld
+- `mrf_simple` *(object)* describes how the Simple MRF policy is configured
+
+### fieldsLimits
+A JSON object documenting restriction for user account info fields.
+All properties are integers.
+
+- `maxFields` maximum number of account info fields local users can create
+- `maxRemoteFields` maximum number of account info fields remote users can have
+   before the user gets rejected or fields truncated
+- `nameLength` maximum length of a field’s name
+- `valueLength` maximum length of a field’s value
+
+### invitesEnabled
+Whether or not signing up via invite codes is possible.
+*(boolean)*
+
+### localBubbleInstances
+Array of domains (as strings) of other instances chosen
+by the admin which are shown in the bubble timeline.
+
+### mailerEnabled
+Whether or not the instance can send out emails.
+*(boolean)*
+
+### nodeDescription
+Human-friendly description of this instance
+*(string)*
+
+### nodeName
+Human-friendly name of this instance
+*(string)*
+
+### pollLimits
+JSON object containing limits for polls created by local users.
+All values are integers.
+- `max_options` maximum number of poll options
+- `max_option_chars` maximum characters per poll option
+- `min_expiration` minimum time in seconds a poll must be open for
+- `max_expiration` maximum time a poll is allowed to be open for
+
+### postFormats
+Array of strings containing media types for supported post source formats.
+A non-exhaustive list of possible values:
+- `text/plain`
+- `text/markdown`
+- `text/bbcode`
+- `text/x.misskeymarkdown`
+
+### private
+Whether or not unauthenticated API access is permitted.
+*(boolean)*
+
+### privilegedStaff
+Whether or not moderators are trusted to perform some
+additional tasks like e.g. issuing password reset emails.
+
+### publicTimelineVisibility
+JSON object containing boolean-valued keys reporting
+if a given timeline can be viewed without login.
+- `local`
+- `federated`
+- `bubble`
+
+### restrictedNicknames
+Array of strings listing nicknames forbidden to be used during signup.
+
+### skipThreadContainment
+Whether broken threads are filtered out
+*(boolean)*
+
+### staffAccounts
+Array containing ActivityPub IDs of local accounts
+with some form of elevated privilege on the instance.
+
+### suggestions
+JSON object containing info on whether the interaction-based
+Mastodon `/api/v1/suggestions` feature is enabled and optionally
+additional implementation-defined fields with more details
+on e.g. how suggested users are selected.
+
+!!! note
+    This has no relation to the newer /api/v2/suggestions API
+    which also (or exclusively) contains staff-curated entries.
+
+- `enabled` *(boolean)* whether or not user recommendations are enabled
+
+### uploadLimits
+JSON object documenting various upload-related size limits.
+All values are integers and in bytes.
+- `avatar` maximum size of uploaded user avatars
+- `banner` maximum size of uploaded user profile banners
+- `background` maximum size of uploaded user profile backgrounds
+- `general` maximum size for all other kinds of uploads

docs/docs/installation/alpine_linux_en.md

@@ -145,47 +145,13 @@ If you want to open your newly installed instance to the world, you should run n
 doas apk add nginx
 ```
 
-* Setup your SSL cert, using your method of choice or certbot. If using certbot, first install it:
-
-```shell
-doas apk add certbot
-```
-
-and then set it up:
-
-```shell
-doas mkdir -p /var/lib/letsencrypt/
-doas certbot certonly --email <your@emailaddress> -d <yourdomain> --standalone
-```
-
-If that doesn’t work, make sure, that nginx is not already running. If it still doesn’t work, try setting up nginx first (change ssl “on” to “off” and try again).
-
 * Copy the example nginx configuration to the nginx folder
 
 ```shell
 doas cp /opt/akkoma/installation/nginx/akkoma.nginx /etc/nginx/conf.d/akkoma.conf
 ```
 
-* Before starting nginx edit the configuration and change it to your needs. You must change change `server_name` and the paths to the certificates. You can use `nano` (install with `apk add nano` if missing).
-
-```
-server {
-    server_name    your.domain;
-    listen         80;
-    ...
-}
-
-server {
-    server_name your.domain;
-    listen 443 ssl http2;
-    ...
-    ssl_trusted_certificate   /etc/letsencrypt/live/your.domain/chain.pem;
-    ssl_certificate           /etc/letsencrypt/live/your.domain/fullchain.pem;
-    ssl_certificate_key       /etc/letsencrypt/live/your.domain/privkey.pem;
-    ...
-}
-```
-
+* Before starting nginx edit the configuration and change it to your needs. You must change change `server_name`. You can use `nano` (install with `apk add nano` if missing).
 * Enable and start nginx:
 
 ```shell
@@ -193,10 +159,37 @@ doas rc-update add nginx
 doas rc-service nginx start
 ```
 
-If you need to renew the certificate in the future, uncomment the relevant location block in the nginx config and run:
+* Setup your SSL cert, using your method of choice or certbot. If using certbot, first install it:
 
 ```shell
-doas certbot certonly --email <your@emailaddress> -d <yourdomain> --webroot -w /var/lib/letsencrypt/
+doas apk add certbot certbot-nginx
+```
+
+and then set it up:
+
+```shell
+doas mkdir -p /var/lib/letsencrypt/
+doas certbot --email <your@emailaddress> -d <yourdomain> -d <media_domain> --nginx
+```
+
+If that doesn't work the first time, add `--dry-run` to further attempts to avoid being ratelimited as you identify the issue, and do not remove it until the dry run succeeds. A common source of problems are nginx config syntax errors; this can be checked for by running `nginx -t`.
+
+To automatically renew, set up a cron job like so:
+
+```shell
+# Enable the crond service
+doas rc-update add crond
+doas rc-service crond start
+
+# Test that renewals work
+doas certbot renew --cert-name yourinstance.tld --nginx --dry-run
+
+# Add the renewal task to cron
+echo '#!/bin/sh
+certbot renew --cert-name yourinstance.tld --nginx
+' | doas tee /etc/periodic/daily/renew-akkoma-cert
+doas chmod +x /etc/periodic/daily/renew-akkoma-cert
+
 ```
 
 #### OpenRC service

docs/docs/installation/arch_linux_en.md

@@ -136,16 +136,17 @@ If you want to open your newly installed instance to the world, you should run n
 sudo pacman -S nginx
 ```
 
-* Create directories for available and enabled sites:
+* Copy the example nginx configuration:
 
 ```shell
-sudo mkdir -p /etc/nginx/sites-{available,enabled}
+sudo cp /opt/akkoma/installation/nginx/akkoma.nginx /etc/nginx/conf.d/akkoma.conf
 ```
 
-* Append the following line at the end of the `http` block in `/etc/nginx/nginx.conf`:
+* Before starting nginx edit the configuration and change it to your needs (e.g. change servername, change cert paths)
+* Enable and start nginx:
 
-```Nginx
-include sites-enabled/*;
+```shell
+sudo systemctl enable --now nginx.service
 ```
 
 * Setup your SSL cert, using your method of choice or certbot. If using certbot, first install it:
@@ -158,32 +159,18 @@ and then set it up:
 
 ```shell
 sudo mkdir -p /var/lib/letsencrypt/
-sudo certbot certonly --email <your@emailaddress> -d <yourdomain> --standalone
+sudo certbot --email <your@emailaddress> -d <yourdomain> -d <media_domain> --nginx
 ```
 
-If that doesn’t work, make sure, that nginx is not already running. If it still doesn’t work, try setting up nginx first (change ssl “on” to “off” and try again).
+If that doesn't work the first time, add `--dry-run` to further attempts to avoid being ratelimited as you identify the issue, and do not remove it until the dry run succeeds. A common source of problems are nginx config syntax errors; this can be checked for by running `nginx -t`.
 
----
-
-* Copy the example nginx configuration and activate it:
+To make sure renewals work, enable the appropriate systemd timer:
 
 ```shell
-sudo cp /opt/akkoma/installation/nginx/akkoma.nginx /etc/nginx/sites-available/akkoma.nginx
-sudo ln -s /etc/nginx/sites-available/akkoma.nginx /etc/nginx/sites-enabled/akkoma.nginx
+sudo systemctl enable --now certbot-renew.timer
 ```
 
-* Before starting nginx edit the configuration and change it to your needs (e.g. change servername, change cert paths)
-* Enable and start nginx:
-
-```shell
-sudo systemctl enable --now nginx.service
-```
-
-If you need to renew the certificate in the future, uncomment the relevant location block in the nginx config and run:
-
-```shell
-sudo certbot certonly --email <your@emailaddress> -d <yourdomain> --webroot -w /var/lib/letsencrypt/
-```
+Certificate renewal should be handled automatically by Certbot from now on.
 
 #### Other webserver/proxies
 

docs/docs/installation/debian_based_en.md

@@ -155,23 +155,6 @@ If you want to open your newly installed instance to the world, you should run n
 sudo apt install nginx
 ```
 
-* Setup your SSL cert, using your method of choice or certbot. If using certbot, first install it:
-
-```shell
-sudo apt install certbot
-```
-
-and then set it up:
-
-```shell
-sudo mkdir -p /var/lib/letsencrypt/
-sudo certbot certonly --email <your@emailaddress> -d <yourdomain> --standalone
-```
-
-If that doesn’t work, make sure, that nginx is not already running. If it still doesn’t work, try setting up nginx first (change ssl “on” to “off” and try again).
-
----
-
 * Copy the example nginx configuration and activate it:
 
 ```shell
@@ -186,12 +169,23 @@ sudo ln -s /etc/nginx/sites-available/akkoma.nginx /etc/nginx/sites-enabled/akko
 sudo systemctl enable --now nginx.service
 ```
 
-If you need to renew the certificate in the future, uncomment the relevant location block in the nginx config and run:
+* Setup your SSL cert, using your method of choice or certbot. If using certbot, first install it:
 
 ```shell
-sudo certbot certonly --email <your@emailaddress> -d <yourdomain> --webroot -w /var/lib/letsencrypt/
+sudo apt install certbot python3-certbot-nginx
 ```
 
+and then set it up:
+
+```shell
+sudo mkdir -p /var/lib/letsencrypt/
+sudo certbot --email <your@emailaddress> -d <yourdomain> -d <media_domain> --nginx
+```
+
+If that doesn't work the first time, add `--dry-run` to further attempts to avoid being ratelimited as you identify the issue, and do not remove it until the dry run succeeds. A common source of problems are nginx config syntax errors; this can be checked for by running `nginx -t`.
+
+Certificate renewal should be handled automatically by Certbot from now on.
+
 #### Other webserver/proxies
 
 You can find example configurations for them in `/opt/akkoma/installation/`.

docs/docs/installation/fedora_based_en.md

@@ -135,23 +135,6 @@ If you want to open your newly installed instance to the world, you should run n
 sudo dnf install nginx
 ```
 
-* Setup your SSL cert, using your method of choice or certbot. If using certbot, first install it:
-
-```shell
-sudo dnf install certbot
-```
-
-and then set it up:
-
-```shell
-sudo mkdir -p /var/lib/letsencrypt/
-sudo certbot certonly --email <your@emailaddress> -d <yourdomain> --standalone
-```
-
-If that doesn’t work, make sure, that nginx is not already running. If it still doesn’t work, try setting up nginx first (change ssl “on” to “off” and try again).
-
----
-
 * Copy the example nginx configuration and activate it:
 
 ```shell
@@ -165,12 +148,23 @@ sudo cp /opt/akkoma/installation/nginx/akkoma.nginx /etc/nginx/conf.d/akkoma.con
 sudo systemctl enable --now nginx.service
 ```
 
-If you need to renew the certificate in the future, uncomment the relevant location block in the nginx config and run:
+* Setup your SSL cert, using your method of choice or certbot. If using certbot, first install it:
 
 ```shell
-sudo certbot certonly --email <your@emailaddress> -d <yourdomain> --webroot -w /var/lib/letsencrypt/
+sudo dnf install certbot python3-certbot-nginx
 ```
 
+and then set it up:
+
+```shell
+sudo certbot --email <your@emailaddress> -d <yourdomain> -d <media_domain> --nginx
+```
+
+If that doesn't work the first time, add `--dry-run` to further attempts to avoid being ratelimited as you identify the issue, and do not remove it until the dry run succeeds. A common source of problems are nginx config syntax errors; this can be checked for by running `nginx -t`.
+
+Certificate renewal should be handled automatically by Certbot from now on.
+
+
 #### Other webserver/proxies
 
 You can find example configurations for them in `/opt/akkoma/installation/`.

docs/docs/installation/generic_dependencies.include

@@ -1,6 +1,6 @@
 ## Required dependencies
 
-* PostgreSQL 9.6+
+* PostgreSQL 12+
 * Elixir 1.14+ (currently tested up to 1.16)
 * Erlang OTP 25+ (currently tested up to OTP26)
 * git

docs/docs/installation/gentoo_en.md

@@ -201,25 +201,6 @@ Assuming you want to open your newly installed federated social network to, well
 include sites-enabled/*;
 ```
 
-* Setup your SSL cert, using your method of choice or certbot. If using certbot, install it if you haven't already:
-
-```shell
- # emerge --ask app-crypt/certbot app-crypt/certbot-nginx
-```
-
-and then set it up:
-
-```shell
- # mkdir -p /var/lib/letsencrypt/
- # certbot certonly --email <your@emailaddress> -d <yourdomain> --standalone
-```
-
-If that doesn't work the first time, add `--dry-run` to further attempts to avoid being ratelimited as you identify the issue, and do not remove it until the dry run succeeds. If that doesn’t work, make sure, that nginx is not already running. If it still doesn’t work, try setting up nginx first (change ssl “on” to “off” and try again). Often the answer to issues with certbot is to use the `--nginx` flag once you have nginx up and running.
-
-If you are using any additional subdomains, such as for a media proxy, you can re-run the same command with the subdomain in question. When it comes time to renew later, you will not need to run multiple times for each domain, one renew will handle it.
-
----
-
 * Copy the example nginx configuration and activate it:
 
 ```shell
@@ -237,9 +218,24 @@ Pay special attention to the line that begins with `ssl_ecdh_curve`. It is stong
 
 ```shell
  # rc-update add nginx default
- # /etc/init.d/nginx start
+ # rc-service nginx start
 ```
 
+* Setup your SSL cert, using your method of choice or certbot. If using certbot, install it if you haven't already:
+
+```shell
+ # emerge --ask app-crypt/certbot app-crypt/certbot-nginx
+```
+
+and then set it up:
+
+```shell
+ # mkdir -p /var/lib/letsencrypt/
+ # certbot --email <your@emailaddress> -d <yourdomain> -d <media_domain> --nginx
+```
+
+If that doesn't work the first time, add `--dry-run` to further attempts to avoid being ratelimited as you identify the issue, and do not remove it until the dry run succeeds. A common source of problems are nginx config syntax errors; this can be checked for by running `nginx -t`.
+
 If you are using certbot, it is HIGHLY recommend you set up a cron job that renews your certificate, and that you install the suggested `certbot-nginx` plugin. If you don't do these things, you only have yourself to blame when your instance breaks suddenly because you forgot about it.
 
 First, ensure that the command you will be installing into your crontab works.

docs/docs/installation/optional/media_graphics_packages.md

@@ -14,7 +14,7 @@ Note: the packages are not required with the current default settings of Akkoma.
 `ImageMagick` is a set of tools to create, edit, compose, or convert bitmap images.
 
 It is required for the following Akkoma features:
-  * `Pleroma.Upload.Filters.Mogrify`, `Pleroma.Upload.Filters.Mogrifun` upload filters (related config: `Plaroma.Upload/filters` in `config/config.exs`)
+  * `Pleroma.Upload.Filters.Mogrify`, `Pleroma.Upload.Filters.Mogrifun` upload filters (related config: `Pleroma.Upload/filters` in `config/config.exs`)
   * Media preview proxy for still images (related config: `media_preview_proxy/enabled` in `config/config.exs`)
   
 ## `ffmpeg`
@@ -29,4 +29,5 @@ It is required for the following Akkoma features:
 `exiftool` is media files metadata reader/writer.
 
 It is required for the following Akkoma features:
-  * `Pleroma.Upload.Filters.Exiftool` upload filter (related config: `Plaroma.Upload/filters` in `config/config.exs`)
+  * `Pleroma.Upload.Filters.Exiftool.StripMetadata` upload filter (related config: `Pleroma.Upload/filters` in `config/config.exs`)
+  * `Pleroma.Upload.Filters.Exiftool.ReadDescription` upload filter (related config: `Pleroma.Upload/filters` in `config/config.exs`)

docs/docs/installation/otp_en.md

@@ -9,7 +9,7 @@ This guide covers a installation using an OTP release. To install Akkoma from so
 * For installing OTP releases on RedHat-based distros like Fedora and Centos Stream, please follow [this guide](./otp_redhat_en.md) instead.
 * A (sub)domain pointed to the machine
 
-You will be running commands as root. If you aren't root already, please elevate your priviledges by executing `sudo su`/`su`.
+You will be running commands as root. If you aren't root already, please elevate your priviledges by executing `sudo -i`/`su`.
 
 While in theory OTP releases are possbile to install on any compatible machine, for the sake of simplicity this guide focuses only on Debian/Ubuntu and Alpine.
 
@@ -176,11 +176,6 @@ su akkoma -s $SHELL -lc "./bin/pleroma stop"
 
 ### Setting up nginx and getting Let's Encrypt SSL certificaties
 
-#### Get a Let's Encrypt certificate
-```sh
-certbot certonly --standalone --preferred-challenges http -d yourinstance.tld
-```
-
 #### Copy Akkoma nginx configuration to the nginx folder
 
 The location of nginx configs is dependent on the distro
@@ -209,6 +204,14 @@ $EDITOR path-to-nginx-config
 # Verify that the config is valid
 nginx -t
 ```
+
+#### Get a Let's Encrypt certificate
+```sh
+certbot --nginx -d yourinstance.tld -d media.yourinstance.tld
+```
+
+If that doesn't work the first time, add `--dry-run` to further attempts to avoid being ratelimited as you identify the issue, and do not remove it until the dry run succeeds. A common source of problems are nginx config syntax errors; this can be checked for by running `nginx -t`.
+
 #### Start nginx
 
 === "Alpine"
@@ -252,32 +255,19 @@ If everything worked, you should see Akkoma-FE when visiting your domain. If tha
 ## Post installation
 
 ### Setting up auto-renew of the Let's Encrypt certificate
-```sh
-# Create the directory for webroot challenges
-mkdir -p /var/lib/letsencrypt
-
-# Uncomment the webroot method
-$EDITOR path-to-nginx-config
-
-# Verify that the config is valid
-nginx -t
-```
 
 === "Alpine"
     ```
-    # Restart nginx
-    rc-service nginx restart
-
     # Start the cron daemon and make it start on boot
     rc-service crond start
     rc-update add crond
 
     # Ensure the webroot menthod and post hook is working
-    certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --dry-run --post-hook 'rc-service nginx reload'
+    certbot renew --cert-name yourinstance.tld --nginx --dry-run
 
     # Add it to the daily cron
     echo '#!/bin/sh
-    certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --post-hook "rc-service nginx reload"
+    certbot renew --cert-name yourinstance.tld --nginx
     ' > /etc/periodic/daily/renew-akkoma-cert
     chmod +x /etc/periodic/daily/renew-akkoma-cert
 
@@ -286,22 +276,7 @@ nginx -t
     ```
 
 === "Debian/Ubuntu"
-    ```
-    # Restart nginx
-    systemctl restart nginx
-
-    # Ensure the webroot menthod and post hook is working
-    certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --dry-run --post-hook 'systemctl reload nginx'
-
-    # Add it to the daily cron
-    echo '#!/bin/sh
-    certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --post-hook "systemctl reload nginx"
-    ' > /etc/cron.daily/renew-akkoma-cert
-    chmod +x /etc/cron.daily/renew-akkoma-cert
-
-    # If everything worked the output should contain /etc/cron.daily/renew-akkoma-cert
-    run-parts --test /etc/cron.daily
-    ```
+    This should be automatically enabled with the `certbot-renew.timer` systemd unit.
 
 ## Create your first user and set as admin
 ```sh

docs/docs/installation/otp_redhat_en.md

@@ -82,6 +82,7 @@ Other than things bundled in the OTP release Akkoma depends on:
 * PostgreSQL (also utilizes extensions in postgresql-contrib)
 * nginx (could be swapped with another reverse proxy but this guide covers only it)
 * certbot (for Let's Encrypt certificates, could be swapped with another ACME client, but this guide covers only it)
+    * If you are using certbot, also install the `python3-certbot-nginx` package for the nginx plugin
 * libmagic/file
 
 First, update your system, if not already done:
@@ -169,12 +170,6 @@ sudo -Hu akkoma ./bin/pleroma stop
 
 ### Setting up nginx and getting Let's Encrypt SSL certificaties
 
-#### Get a Let's Encrypt certificate
-
-```shell
-certbot certonly --standalone --preferred-challenges http -d yourinstance.tld
-```
-
 #### Copy Akkoma nginx configuration to the nginx folder
 
 ```shell
@@ -195,8 +190,15 @@ sudo nginx -t
 sudo systemctl start nginx
 ```
 
-At this point if you open your (sub)domain in a browser you should see a 502 error, that's because Akkoma is not started yet.
+#### Get a Let's Encrypt certificate
 
+```shell
+sudo certbot --email <your@emailaddress> -d <yourdomain> -d <media_domain> --nginx
+```
+
+If that doesn't work the first time, add `--dry-run` to further attempts to avoid being ratelimited as you identify the issue, and do not remove it until the dry run succeeds. A common source of problems are nginx config syntax errors; this can be checked for by running `nginx -t`.
+
+If you're successful with obtaining the certificates, opening your (sub)domain in a browser will result in a 502 error, since Akkoma hasn't been started yet.
 
 ### Setting up a system service
 
@@ -239,19 +241,11 @@ sudo nginx -t
 # Restart nginx
 sudo systemctl restart nginx
 
-# Ensure the webroot menthod and post hook is working
-sudo certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --dry-run --post-hook 'systemctl reload nginx'
-
-# Add it to the daily cron
-echo '#!/bin/sh
-certbot renew --cert-name yourinstance.tld --webroot -w /var/lib/letsencrypt/ --post-hook "systemctl reload nginx"
-' > /etc/cron.daily/renew-akkoma-cert
-sudo chmod +x /etc/cron.daily/renew-akkoma-cert
-
-# If everything worked the output should contain /etc/cron.daily/renew-akkoma-cert
-sudo run-parts --test /etc/cron.daily
+# Test that renewals work properly
+sudo certbot renew --cert-name yourinstance.tld --nginx --dry-run
 ```
 
+Assuming the commands were run successfully, certbot should be able to renew your certificates automatically via the `certbot-renew.timer` systemd unit.
 
 ## Create your first user and set as admin
 ```shell

elixir_buildpack.config

@@ -1,2 +0,0 @@
-elixir_version=1.14.3
-erlang_version=25.3

installation/apache/akkoma-apache.conf

@@ -60,7 +60,7 @@ ServerTokens Prod
     Include /etc/letsencrypt/options-ssl-apache.conf
 
     # Uncomment the following to enable MediaProxy caching on disk
-    #CacheRoot /tmp/akkoma-media-cache/
+    #CacheRoot /var/tmp/akkoma-media-cache/
     #CacheDirLevels 1
     #CacheDirLength 2
     #CacheEnable disk /proxy

installation/apache/apache-cache-purge.sh.example

@@ -16,7 +16,7 @@
 SCRIPTNAME=${0##*/}
 
 # mod_disk_cache directory
-CACHE_DIRECTORY="/tmp/akkoma-media-cache"
+CACHE_DIRECTORY="/var/tmp/akkoma-media-cache"
 
 ## Removes an item via the htcacheclean utility
 ## $1 - the filename, can be a pattern .

installation/caddy/Caddyfile

@@ -12,26 +12,22 @@ example.tld  {
     output file /var/log/caddy/akkoma.log
   }
 
-  encode gzip
-
   # this is explicitly IPv4 since Pleroma.Web.Endpoint binds on IPv4 only
   # and `localhost.` resolves to [::0] on some systems: see issue #930
   reverse_proxy 127.0.0.1:4000
 
-  # Uncomment if using a separate media subdomain
-  #@mediaproxy path /media/* /proxy/*
-  #handle @mediaproxy {
-  #  redir https://media.example.tld{uri} permanent
-  #}
+  @mediaproxy path /media/* /proxy/*
+  handle @mediaproxy {
+    redir https://media.example.tld{uri} permanent
+  }
 }
 
-# Uncomment if using a separate media subdomain
-#media.example.tld {
-#  @mediaproxy path /media/* /proxy/*
-#  reverse_proxy @mediaproxy 127.0.0.1:4000 {
-#    transport http {
-#      response_header_timeout 10s
-#      read_timeout 15s
-#    }
-#  }
-#}
+media.example.tld {
+  @mediaproxy path /media/* /proxy/*
+  reverse_proxy @mediaproxy 127.0.0.1:4000 {
+    transport http {
+      response_header_timeout 10s
+      read_timeout 15s
+    }
+  }
+}

installation/nginx/akkoma.nginx

@@ -1,12 +1,9 @@
 # default nginx site config for Akkoma
 #
-# Simple installation instructions:
-# 1. Install your TLS certificate, possibly using Let's Encrypt.
-# 2. Replace 'example.tld' with your instance's domain wherever it appears.
-# 3. Copy this file to /etc/nginx/sites-available/ and then add a symlink to it
-#    in /etc/nginx/sites-enabled/ and run 'nginx -s reload' or restart nginx.
+# See the documentation at docs.akkoma.dev for your particular distro/OS for
+# installation instructions.
 
-proxy_cache_path /tmp/akkoma-media-cache levels=1:2 keys_zone=akkoma_media_cache:10m max_size=10g
+proxy_cache_path /var/tmp/akkoma-media-cache levels=1:2 keys_zone=akkoma_media_cache:10m max_size=1g
                  inactive=720m use_temp_path=off;
 
 # this is explicitly IPv4 since Pleroma.Web.Endpoint binds on IPv4 only
@@ -15,25 +12,19 @@ upstream phoenix {
     server 127.0.0.1:4000 max_fails=5 fail_timeout=60s;
 }
 
-server {
-    server_name    example.tld;
-
-    listen         80;
-    listen         [::]:80;
-
-    # Uncomment this if you need to use the 'webroot' method with certbot. Make sure
-    # that the directory exists and that it is accessible by the webserver. If you followed
-    # the guide, you already ran 'mkdir -p /var/lib/letsencrypt' to create the folder.
-    # You may need to load this file with the ssl server block commented out, run certbot
-    # to get the certificate, and then uncomment it.
-    #
-    # location ~ /\.well-known/acme-challenge {
-    #     root /var/lib/letsencrypt/;
-    # }
-    location / {
-      return         301 https://$server_name$request_uri;
-    }
-}
+# If you are setting up TLS certificates without certbot, uncomment the
+# following to enable HTTP -> HTTPS redirects. Certbot users don't need to do
+# this as it will automatically do this for you.
+# server {
+#     server_name    example.tld media.example.tld;
+#
+#     listen         80;
+#     listen         [::]:80;
+#
+#     location / {
+#         return         301 https://$server_name$request_uri;
+#     }
+# }
 
 # Enable SSL session caching for improved performance
 ssl_session_cache shared:ssl_session_cache:10m;
@@ -41,22 +32,29 @@ ssl_session_cache shared:ssl_session_cache:10m;
 server {
     server_name example.tld;
 
-    listen 443 ssl http2;
-    listen [::]:443 ssl http2;
-    ssl_session_timeout 1d;
-    ssl_session_cache shared:MozSSL:10m;  # about 40000 sessions
-    ssl_session_tickets off;
+    # Once certbot is set up, this will automatically be updated to listen to
+    # port 443 with TLS alongside a redirect from plaintext HTTP.
+    listen 80;
+    listen [::]:80;
 
-    ssl_trusted_certificate   /etc/letsencrypt/live/example.tld/chain.pem;
-    ssl_certificate           /etc/letsencrypt/live/example.tld/fullchain.pem;
-    ssl_certificate_key       /etc/letsencrypt/live/example.tld/privkey.pem;
+    # If you are not using Certbot, comment out the above and uncomment/edit the following
+#     listen 443 ssl http2;
+#     listen [::]:443 ssl http2;
+#     ssl_session_timeout 1d;
+#     ssl_session_cache shared:MozSSL:10m;  # about 40000 sessions
+#     ssl_session_tickets off;
+#
+#     ssl_trusted_certificate   /etc/letsencrypt/live/example.tld/chain.pem;
+#     ssl_certificate           /etc/letsencrypt/live/example.tld/fullchain.pem;
+#     ssl_certificate_key       /etc/letsencrypt/live/example.tld/privkey.pem;
+#
+#     ssl_protocols TLSv1.2 TLSv1.3;
+#     ssl_ciphers "ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4";
+#     ssl_prefer_server_ciphers off;
+#     ssl_ecdh_curve X25519:prime256v1:secp384r1:secp521r1;
+#     ssl_stapling on;
+#     ssl_stapling_verify on;
 
-    ssl_protocols TLSv1.2 TLSv1.3;
-    ssl_ciphers "ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:!aNULL:!eNULL:!EXPORT:!DES:!MD5:!PSK:!RC4";
-    ssl_prefer_server_ciphers off;
-    ssl_ecdh_curve X25519:prime256v1:secp384r1:secp521r1;
-    ssl_stapling on;
-    ssl_stapling_verify on;
 
     gzip_vary on;
     gzip_proxied any;
@@ -86,27 +84,22 @@ server {
 
 # Upload and MediaProxy Subdomain
 # (see main domain setup for more details)
-server {
-    server_name    media.example.tld;
-
-    listen         80;
-    listen         [::]:80;
-
-    location / {
-      return         301 https://$server_name$request_uri;
-    }
-}
-
 server {
     server_name media.example.tld;
 
-    listen 443 ssl http2;
-    listen [::]:443 ssl http2;
+    # Same as above, will be updated to HTTPS once certbot is set up.
+    listen 80;
+    listen [::]:80;
 
-    ssl_trusted_certificate   /etc/letsencrypt/live/media.example.tld/chain.pem;
-    ssl_certificate           /etc/letsencrypt/live/media.example.tld/fullchain.pem;
-    ssl_certificate_key       /etc/letsencrypt/live/media.example.tld/privkey.pem;
-    # .. copy all other the ssl_* and gzip_* stuff from main domain
+    # If you are not using certbot, comment the above and copy all the ssl
+    # stuff from above into here.
+
+    gzip_vary on;
+    gzip_proxied any;
+    gzip_comp_level 6;
+    gzip_buffers 16 8k;
+    gzip_http_version 1.1;
+    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript application/activity+json application/atom+xml;
 
     # the nginx default is 1m, not enough for large media uploads
     client_max_body_size 16m;

installation/nginx/nginx-cache-purge.sh.example

@@ -5,7 +5,7 @@
 SCRIPTNAME=${0##*/}
 
 # NGINX cache directory
-CACHE_DIRECTORY="/tmp/akkoma-media-cache"
+CACHE_DIRECTORY="/var/tmp/akkoma-media-cache"
 
 ## Return the files where the items are cached.
 ## $1 - the filename, can be a pattern .

lib/mix/pleroma.ex

@@ -16,7 +16,7 @@ defmodule Mix.Pleroma do
     :fast_html,
     :oban
   ]
-  @cachex_children ["object", "user", "scrubber", "web_resp"]
+  @cachex_children ["object", "user", "scrubber", "web_resp", "http_backoff"]
   @doc "Common functions to be reused in mix tasks"
   def start_pleroma do
     Pleroma.Config.Holder.save_default()
@@ -112,18 +112,26 @@ defmodule Mix.Pleroma do
     end
   end
 
-  def shell_info(message) do
+  def shell_info(message) when is_binary(message) or is_list(message) do
     if mix_shell?(),
       do: Mix.shell().info(message),
       else: IO.puts(message)
   end
 
-  def shell_error(message) do
+  def shell_info(message) do
+    shell_info("#{inspect(message)}")
+  end
+
+  def shell_error(message) when is_binary(message) or is_list(message) do
     if mix_shell?(),
       do: Mix.shell().error(message),
       else: IO.puts(:stderr, message)
   end
 
+  def shell_error(message) do
+    shell_error("#{inspect(message)}")
+  end
+
   @doc "Performs a safe check whether `Mix.shell/0` is available (does not raise if Mix is not loaded)"
   def mix_shell?, do: :erlang.function_exported(Mix, :shell, 0)
 

lib/mix/tasks/pleroma/activity.ex

@@ -8,7 +8,6 @@ defmodule Mix.Tasks.Pleroma.Activity do
   alias Pleroma.User
   alias Pleroma.Web.CommonAPI
   alias Pleroma.Pagination
-  require Logger
   import Mix.Pleroma
   import Ecto.Query
 
@@ -17,7 +16,7 @@ defmodule Mix.Tasks.Pleroma.Activity do
 
     id
     |> Activity.get_by_id()
-    |> IO.inspect()
+    |> shell_info()
   end
 
   def run(["delete_by_keyword", user, keyword | _rest]) do
@@ -35,7 +34,7 @@ defmodule Mix.Tasks.Pleroma.Activity do
     )
     |> Enum.map(fn x -> CommonAPI.delete(x.id, u) end)
     |> Enum.count()
-    |> IO.puts()
+    |> shell_info()
   end
 
   defp query_with(q, search_query) do

lib/mix/tasks/pleroma/database.ex

@@ -20,6 +20,102 @@ defmodule Mix.Tasks.Pleroma.Database do
   @shortdoc "A collection of database related tasks"
   @moduledoc File.read!("docs/docs/administration/CLI_tasks/database.md")
 
+  defp maybe_limit(query, limit_cnt) do
+    if is_number(limit_cnt) and limit_cnt > 0 do
+      limit(query, [], ^limit_cnt)
+    else
+      query
+    end
+  end
+
+  defp limit_statement(limit) when is_number(limit) do
+    if limit > 0 do
+      "LIMIT #{limit}"
+    else
+      ""
+    end
+  end
+
+  defp prune_orphaned_activities_singles(limit) do
+    %{:num_rows => del_single} =
+      """
+      delete from public.activities
+      where id in (
+        select a.id from public.activities a
+        left join public.objects o on a.data ->> 'object' = o.data ->> 'id'
+        left join public.activities a2 on a.data ->> 'object' = a2.data ->> 'id'
+        left join public.users u  on a.data ->> 'object' = u.ap_id
+        where not a.local
+        and jsonb_typeof(a."data" -> 'object') = 'string'
+        and o.id is null
+        and a2.id is null
+        and u.id is null
+        #{limit_statement(limit)}
+      )
+      """
+      |> Repo.query!([], timeout: :infinity)
+
+    Logger.info("Prune activity singles: deleted #{del_single} rows...")
+    del_single
+  end
+
+  defp prune_orphaned_activities_array(limit) do
+    %{:num_rows => del_array} =
+      """
+      delete from public.activities
+      where id in (
+        select a.id from public.activities a
+        join json_array_elements_text((a."data" -> 'object')::json) as j
+             on a.data->>'type' = 'Flag'
+        left join public.objects o on j.value = o.data ->> 'id'
+        left join public.activities a2 on j.value = a2.data ->> 'id'
+        left join public.users u  on j.value = u.ap_id
+        group by a.id
+        having max(o.data ->> 'id') is null
+        and max(a2.data ->> 'id') is null
+        and max(u.ap_id) is null
+        #{limit_statement(limit)}
+      )
+      """
+      |> Repo.query!([], timeout: :infinity)
+
+    Logger.info("Prune activity arrays: deleted #{del_array} rows...")
+    del_array
+  end
+
+  def prune_orphaned_activities(limit \\ 0, opts \\ []) when is_number(limit) do
+    # Activities can either refer to a single object id, and array of object ids
+    # or contain an inlined object (at least after going through our normalisation)
+    #
+    # Flag is the only type we support with an array (and always has arrays).
+    # Update the only one with inlined objects.
+    #
+    # We already regularly purge old Delete, Undo, Update and Remove and if
+    # rejected Follow requests anyway; no need to explicitly deal with those here.
+    #
+    # Since there’s an index on types and there are typically only few Flag
+    # activites, it’s _much_ faster to utilise the index. To avoid accidentally
+    # deleting useful activities should more types be added, keep typeof for singles.
+
+    # Prune activities who link to an array of objects
+    del_array =
+      if Keyword.get(opts, :arrays, true) do
+        prune_orphaned_activities_array(limit)
+      else
+        0
+      end
+
+    # Prune activities who link to a single object
+    del_single =
+      if Keyword.get(opts, :singles, true) do
+        prune_orphaned_activities_singles(limit)
+      else
+        0
+      end
+
+    del_single + del_array
+  end
+
   def run(["remove_embedded_objects" | args]) do
     {options, [], []} =
       OptionParser.parse(
@@ -62,6 +158,37 @@ defmodule Mix.Tasks.Pleroma.Database do
     )
   end
 
+  def run(["prune_orphaned_activities" | args]) do
+    {options, [], []} =
+      OptionParser.parse(
+        args,
+        strict: [
+          limit: :integer,
+          singles: :boolean,
+          arrays: :boolean
+        ]
+      )
+
+    start_pleroma()
+
+    {limit, options} = Keyword.pop(options, :limit, 0)
+
+    log_message = "Pruning orphaned activities"
+
+    log_message =
+      if limit > 0 do
+        log_message <> ", limiting deletion to #{limit} rows"
+      else
+        log_message
+      end
+
+    Logger.info(log_message)
+
+    deleted = prune_orphaned_activities(limit, options)
+
+    Logger.info("Deleted #{deleted} rows")
+  end
+
   def run(["prune_objects" | args]) do
     {options, [], []} =
       OptionParser.parse(
@@ -70,7 +197,8 @@ defmodule Mix.Tasks.Pleroma.Database do
           vacuum: :boolean,
           keep_threads: :boolean,
           keep_non_public: :boolean,
-          prune_orphaned_activities: :boolean
+          prune_orphaned_activities: :boolean,
+          limit: :integer
         ]
       )
 
@@ -79,6 +207,8 @@ defmodule Mix.Tasks.Pleroma.Database do
     deadline = Pleroma.Config.get([:instance, :remote_post_retention_days])
     time_deadline = NaiveDateTime.utc_now() |> NaiveDateTime.add(-(deadline * 86_400))
 
+    limit_cnt = Keyword.get(options, :limit, 0)
+
     log_message = "Pruning objects older than #{deadline} days"
 
     log_message =
@@ -110,129 +240,124 @@ defmodule Mix.Tasks.Pleroma.Database do
         log_message
       end
 
+    log_message =
+      if limit_cnt > 0 do
+        log_message <> ", limiting to #{limit_cnt} rows"
+      else
+        log_message
+      end
+
     Logger.info(log_message)
 
-    if Keyword.get(options, :keep_threads) do
-      # We want to delete objects from threads where
-      # 1. the newest post is still old
-      # 2. none of the activities is local
-      # 3. none of the activities is bookmarked
-      # 4. optionally none of the posts is non-public
-      deletable_context =
-        if Keyword.get(options, :keep_non_public) do
-          Pleroma.Activity
-          |> join(:left, [a], b in Pleroma.Bookmark, on: a.id == b.activity_id)
-          |> group_by([a], fragment("? ->> 'context'::text", a.data))
-          |> having(
-            [a],
-            not fragment(
-              # Posts (checked on Create Activity) is non-public
-              "bool_or((not(?->'to' \\? ? OR ?->'cc' \\? ?)) and ? ->> 'type' = 'Create')",
-              a.data,
-              ^Pleroma.Constants.as_public(),
-              a.data,
-              ^Pleroma.Constants.as_public(),
-              a.data
+    {del_obj, _} =
+      if Keyword.get(options, :keep_threads) do
+        # We want to delete objects from threads where
+        # 1. the newest post is still old
+        # 2. none of the activities is local
+        # 3. none of the activities is bookmarked
+        # 4. optionally none of the posts is non-public
+        deletable_context =
+          if Keyword.get(options, :keep_non_public) do
+            Pleroma.Activity
+            |> join(:left, [a], b in Pleroma.Bookmark, on: a.id == b.activity_id)
+            |> group_by([a], fragment("? ->> 'context'::text", a.data))
+            |> having(
+              [a],
+              not fragment(
+                # Posts (checked on Create Activity) is non-public
+                "bool_or((not(?->'to' \\? ? OR ?->'cc' \\? ?)) and ? ->> 'type' = 'Create')",
+                a.data,
+                ^Pleroma.Constants.as_public(),
+                a.data,
+                ^Pleroma.Constants.as_public(),
+                a.data
+              )
             )
-          )
-        else
-          Pleroma.Activity
-          |> join(:left, [a], b in Pleroma.Bookmark, on: a.id == b.activity_id)
-          |> group_by([a], fragment("? ->> 'context'::text", a.data))
-        end
-        |> having([a], max(a.updated_at) < ^time_deadline)
-        |> having([a], not fragment("bool_or(?)", a.local))
-        |> having([_, b], fragment("max(?::text) is null", b.id))
-        |> select([a], fragment("? ->> 'context'::text", a.data))
+          else
+            Pleroma.Activity
+            |> join(:left, [a], b in Pleroma.Bookmark, on: a.id == b.activity_id)
+            |> group_by([a], fragment("? ->> 'context'::text", a.data))
+          end
+          |> having([a], max(a.updated_at) < ^time_deadline)
+          |> having([a], not fragment("bool_or(?)", a.local))
+          |> having([_, b], fragment("max(?::text) is null", b.id))
+          |> maybe_limit(limit_cnt)
+          |> select([a], fragment("? ->> 'context'::text", a.data))
 
-      Pleroma.Object
-      |> where([o], fragment("? ->> 'context'::text", o.data) in subquery(deletable_context))
-    else
-      if Keyword.get(options, :keep_non_public) do
         Pleroma.Object
-        |> where(
-          [o],
-          fragment(
-            "?->'to' \\? ? OR ?->'cc' \\? ?",
-            o.data,
-            ^Pleroma.Constants.as_public(),
-            o.data,
-            ^Pleroma.Constants.as_public()
-          )
-        )
+        |> where([o], fragment("? ->> 'context'::text", o.data) in subquery(deletable_context))
       else
+        deletable =
+          if Keyword.get(options, :keep_non_public) do
+            Pleroma.Object
+            |> where(
+              [o],
+              fragment(
+                "?->'to' \\? ? OR ?->'cc' \\? ?",
+                o.data,
+                ^Pleroma.Constants.as_public(),
+                o.data,
+                ^Pleroma.Constants.as_public()
+              )
+            )
+          else
+            Pleroma.Object
+          end
+          |> where([o], o.updated_at < ^time_deadline)
+          |> where(
+            [o],
+            fragment("split_part(?->>'actor', '/', 3) != ?", o.data, ^Pleroma.Web.Endpoint.host())
+          )
+          |> maybe_limit(limit_cnt)
+          |> select([o], o.id)
+
         Pleroma.Object
+        |> where([o], o.id in subquery(deletable))
       end
-      |> where([o], o.updated_at < ^time_deadline)
-      |> where(
-        [o],
-        fragment("split_part(?->>'actor', '/', 3) != ?", o.data, ^Pleroma.Web.Endpoint.host())
-      )
-    end
-    |> Repo.delete_all(timeout: :infinity)
+      |> Repo.delete_all(timeout: :infinity)
+
+    Logger.info("Deleted #{del_obj} objects...")
 
     if !Keyword.get(options, :keep_threads) do
       # Without the --keep-threads option, it's possible that bookmarked
       # objects have been deleted. We remove the corresponding bookmarks.
-      """
-      delete from public.bookmarks
-      where id in (
-        select b.id from public.bookmarks b
-        left join public.activities a on b.activity_id = a.id
-        left join public.objects o on a."data" ->> 'object' = o.data ->> 'id'
-        where o.id is null
-      )
-      """
-      |> Repo.query([], timeout: :infinity)
+      %{:num_rows => del_bookmarks} =
+        """
+        delete from public.bookmarks
+        where id in (
+          select b.id from public.bookmarks b
+          left join public.activities a on b.activity_id = a.id
+          left join public.objects o on a."data" ->> 'object' = o.data ->> 'id'
+          where o.id is null
+        )
+        """
+        |> Repo.query!([], timeout: :infinity)
+
+      Logger.info("Deleted #{del_bookmarks} orphaned bookmarks...")
     end
 
     if Keyword.get(options, :prune_orphaned_activities) do
-      # Prune activities who link to a single object
-      """
-      delete from public.activities
-      where id in (
-        select a.id from public.activities a
-        left join public.objects o on a.data ->> 'object' = o.data ->> 'id'
-        left join public.activities a2 on a.data ->> 'object' = a2.data ->> 'id'
-        left join public.users u  on a.data ->> 'object' = u.ap_id
-        where not a.local
-        and jsonb_typeof(a."data" -> 'object') = 'string'
-        and o.id is null
-        and a2.id is null
-        and u.id is null
-      )
-      """
-      |> Repo.query([], timeout: :infinity)
-
-      # Prune activities who link to an array of objects
-      """
-      delete from public.activities
-      where id in (
-        select a.id from public.activities a
-        join json_array_elements_text((a."data" -> 'object')::json) as j on jsonb_typeof(a."data" -> 'object') = 'array'
-        left join public.objects o on j.value = o.data ->> 'id'
-        left join public.activities a2 on j.value = a2.data ->> 'id'
-        left join public.users u  on j.value = u.ap_id
-        group by a.id
-        having max(o.data ->> 'id') is null
-        and max(a2.data ->> 'id') is null
-        and max(u.ap_id) is null
-      )
-      """
-      |> Repo.query([], timeout: :infinity)
+      del_activities = prune_orphaned_activities()
+      Logger.info("Deleted #{del_activities} orphaned activities...")
     end
 
-    """
-    DELETE FROM hashtags AS ht
-    WHERE NOT EXISTS (
-      SELECT 1 FROM hashtags_objects hto
-      WHERE ht.id = hto.hashtag_id)
-    """
-    |> Repo.query()
+    %{:num_rows => del_hashtags} =
+      """
+      DELETE FROM hashtags AS ht
+      WHERE NOT EXISTS (
+        SELECT 1 FROM hashtags_objects hto
+        WHERE ht.id = hto.hashtag_id)
+      """
+      |> Repo.query!()
+
+    Logger.info("Deleted #{del_hashtags} no longer used hashtags...")
 
     if Keyword.get(options, :vacuum) do
+      Logger.info("Starting vacuum...")
       Maintenance.vacuum("full")
     end
+
+    Logger.info("All done!")
   end
 
   def run(["prune_task"]) do

lib/mix/tasks/pleroma/diagnostics.ex

@@ -3,7 +3,6 @@ defmodule Mix.Tasks.Pleroma.Diagnostics do
   alias Pleroma.Repo
   alias Pleroma.User
 
-  require Logger
   require Pleroma.Constants
 
   import Mix.Pleroma
@@ -14,13 +13,20 @@ defmodule Mix.Tasks.Pleroma.Diagnostics do
     start_pleroma()
 
     Pleroma.HTTP.get(url)
+    |> shell_info()
+  end
+
+  def run(["fetch_object", url]) do
+    start_pleroma()
+
+    Pleroma.Object.Fetcher.fetch_object_from_id(url)
     |> IO.inspect()
   end
 
   def run(["home_timeline", nickname]) do
     start_pleroma()
     user = Repo.get_by!(User, nickname: nickname)
-    Logger.info("Home timeline query #{user.nickname}")
+    shell_info("Home timeline query #{user.nickname}")
 
     followed_hashtags =
       user
@@ -49,14 +55,14 @@ defmodule Mix.Tasks.Pleroma.Diagnostics do
       |> limit(20)
 
     Ecto.Adapters.SQL.explain(Repo, :all, query, analyze: true, timeout: :infinity)
-    |> IO.puts()
+    |> shell_info()
   end
 
   def run(["user_timeline", nickname, reading_nickname]) do
     start_pleroma()
     user = Repo.get_by!(User, nickname: nickname)
     reading_user = Repo.get_by!(User, nickname: reading_nickname)
-    Logger.info("User timeline query #{user.nickname}")
+    shell_info("User timeline query #{user.nickname}")
 
     params =
       %{limit: 20}
@@ -80,7 +86,7 @@ defmodule Mix.Tasks.Pleroma.Diagnostics do
       |> limit(20)
 
     Ecto.Adapters.SQL.explain(Repo, :all, query, analyze: true, timeout: :infinity)
-    |> IO.puts()
+    |> shell_info()
   end
 
   def run(["notifications", nickname]) do
@@ -96,7 +102,7 @@ defmodule Mix.Tasks.Pleroma.Diagnostics do
       |> limit(20)
 
     Ecto.Adapters.SQL.explain(Repo, :all, query, analyze: true, timeout: :infinity)
-    |> IO.puts()
+    |> shell_info()
   end
 
   def run(["known_network", nickname]) do
@@ -122,6 +128,6 @@ defmodule Mix.Tasks.Pleroma.Diagnostics do
       |> limit(20)
 
     Ecto.Adapters.SQL.explain(Repo, :all, query, analyze: true, timeout: :infinity)
-    |> IO.puts()
+    |> shell_info()
   end
 end

lib/mix/tasks/pleroma/emoji.ex

@@ -27,11 +27,11 @@ defmodule Mix.Tasks.Pleroma.Emoji do
       ]
 
       for {param, value} <- to_print do
-        IO.puts(IO.ANSI.format([:bright, param, :normal, ": ", value]))
+        shell_info(IO.ANSI.format([:bright, param, :normal, ": ", value]))
       end
 
       # A newline
-      IO.puts("")
+      shell_info("")
     end)
   end
 
@@ -49,7 +49,7 @@ defmodule Mix.Tasks.Pleroma.Emoji do
         pack = manifest[pack_name]
         src = pack["src"]
 
-        IO.puts(
+        shell_info(
           IO.ANSI.format([
             "Downloading ",
             :bright,
@@ -67,9 +67,9 @@ defmodule Mix.Tasks.Pleroma.Emoji do
         sha_status_text = ["SHA256 of ", :bright, pack_name, :normal, " source file is ", :bright]
 
         if archive_sha == String.upcase(pack["src_sha256"]) do
-          IO.puts(IO.ANSI.format(sha_status_text ++ [:green, "OK"]))
+          shell_info(IO.ANSI.format(sha_status_text ++ [:green, "OK"]))
         else
-          IO.puts(IO.ANSI.format(sha_status_text ++ [:red, "BAD"]))
+          shell_info(IO.ANSI.format(sha_status_text ++ [:red, "BAD"]))
 
           raise "Bad SHA256 for #{pack_name}"
         end
@@ -80,7 +80,7 @@ defmodule Mix.Tasks.Pleroma.Emoji do
           |> Path.dirname()
           |> Path.join(pack["files"])
 
-        IO.puts(
+        shell_info(
           IO.ANSI.format([
             "Fetching the file list for ",
             :bright,
@@ -94,7 +94,7 @@ defmodule Mix.Tasks.Pleroma.Emoji do
 
         files = fetch_and_decode!(files_loc)
 
-        IO.puts(IO.ANSI.format(["Unpacking ", :bright, pack_name]))
+        shell_info(IO.ANSI.format(["Unpacking ", :bright, pack_name]))
 
         pack_path =
           Path.join([
@@ -115,7 +115,7 @@ defmodule Mix.Tasks.Pleroma.Emoji do
             file_list: files_to_unzip
           )
 
-        IO.puts(IO.ANSI.format(["Writing pack.json for ", :bright, pack_name]))
+        shell_info(IO.ANSI.format(["Writing pack.json for ", :bright, pack_name]))
 
         pack_json = %{
           pack: %{
@@ -132,7 +132,7 @@ defmodule Mix.Tasks.Pleroma.Emoji do
         File.write!(Path.join(pack_path, "pack.json"), Jason.encode!(pack_json, pretty: true))
         Pleroma.Emoji.reload()
       else
-        IO.puts(IO.ANSI.format([:bright, :red, "No pack named \"#{pack_name}\" found"]))
+        shell_info(IO.ANSI.format([:bright, :red, "No pack named \"#{pack_name}\" found"]))
       end
     end
   end
@@ -180,14 +180,14 @@ defmodule Mix.Tasks.Pleroma.Emoji do
         custom_exts
       end
 
-    IO.puts("Using #{Enum.join(exts, " ")} extensions")
+    shell_info("Using #{Enum.join(exts, " ")} extensions")
 
-    IO.puts("Downloading the pack and generating SHA256")
+    shell_info("Downloading the pack and generating SHA256")
 
     {:ok, %{body: binary_archive}} = Pleroma.HTTP.get(src)
     archive_sha = :crypto.hash(:sha256, binary_archive) |> Base.encode16()
 
-    IO.puts("SHA256 is #{archive_sha}")
+    shell_info("SHA256 is #{archive_sha}")
 
     pack_json = %{
       name => %{
@@ -208,7 +208,7 @@ defmodule Mix.Tasks.Pleroma.Emoji do
 
     File.write!(files_name, Jason.encode!(emoji_map, pretty: true))
 
-    IO.puts("""
+    shell_info("""
 
     #{files_name} has been created and contains the list of all found emojis in the pack.
     Please review the files in the pack and remove those not needed.
@@ -230,11 +230,11 @@ defmodule Mix.Tasks.Pleroma.Emoji do
         )
       )
 
-      IO.puts("#{pack_file} has been updated with the #{name} pack")
+      shell_info("#{pack_file} has been updated with the #{name} pack")
     else
       File.write!(pack_file, Jason.encode!(pack_json, pretty: true))
 
-      IO.puts("#{pack_file} has been created with the #{name} pack")
+      shell_info("#{pack_file} has been created with the #{name} pack")
     end
 
     Pleroma.Emoji.reload()
@@ -243,7 +243,7 @@ defmodule Mix.Tasks.Pleroma.Emoji do
   def run(["reload"]) do
     start_pleroma()
     Pleroma.Emoji.reload()
-    IO.puts("Emoji packs have been reloaded.")
+    shell_info("Emoji packs have been reloaded.")
   end
 
   defp fetch_and_decode!(from) do

lib/mix/tasks/pleroma/instance.ex

@@ -35,7 +35,8 @@ defmodule Mix.Tasks.Pleroma.Instance do
           static_dir: :string,
           listen_ip: :string,
           listen_port: :string,
-          strip_uploads: :string,
+          strip_uploads_metadata: :string,
+          read_uploads_description: :string,
           anonymize_uploads: :string
         ],
         aliases: [
@@ -169,21 +170,38 @@ defmodule Mix.Tasks.Pleroma.Instance do
         )
         |> Path.expand()
 
-      {strip_uploads_message, strip_uploads_default} =
+      {strip_uploads_metadata_message, strip_uploads_metadata_default} =
         if Pleroma.Utils.command_available?("exiftool") do
-          {"Do you want to strip location (GPS) data from uploaded images? This requires exiftool, it was detected as installed. (y/n)",
+          {"Do you want to strip metadata from uploaded images? This requires exiftool, it was detected as installed. (y/n)",
            "y"}
         else
-          {"Do you want to strip location (GPS) data from uploaded images? This requires exiftool, it was detected as not installed, please install it if you answer yes. (y/n)",
+          {"Do you want to strip metadata from uploaded images? This requires exiftool, it was detected as not installed, please install it if you answer yes. (y/n)",
            "n"}
         end
 
-      strip_uploads =
+      strip_uploads_metadata =
         get_option(
           options,
-          :strip_uploads,
-          strip_uploads_message,
-          strip_uploads_default
+          :strip_uploads_metadata,
+          strip_uploads_metadata_message,
+          strip_uploads_metadata_default
+        ) === "y"
+
+      {read_uploads_description_message, read_uploads_description_default} =
+        if Pleroma.Utils.command_available?("exiftool") do
+          {"Do you want to read data from uploaded files so clients can use it to prefill fields like image description? This requires exiftool, it was detected as installed. (y/n)",
+           "y"}
+        else
+          {"Do you want to read data from uploaded files so clients can use it to prefill fields like image description? This requires exiftool, it was detected as not installed, please install it if you answer yes. (y/n)",
+           "n"}
+        end
+
+      read_uploads_description =
+        get_option(
+          options,
+          :read_uploads_description,
+          read_uploads_description_message,
+          read_uploads_description_default
         ) === "y"
 
       anonymize_uploads =
@@ -230,7 +248,8 @@ defmodule Mix.Tasks.Pleroma.Instance do
           listen_port: listen_port,
           upload_filters:
             upload_filters(%{
-              strip: strip_uploads,
+              strip_metadata: strip_uploads_metadata,
+              read_description: read_uploads_description,
               anonymize: anonymize_uploads
             })
         )
@@ -305,11 +324,20 @@ defmodule Mix.Tasks.Pleroma.Instance do
   end
 
   defp upload_filters(filters) when is_map(filters) do
+    enabled_filters = []
+
     enabled_filters =
-      if filters.strip do
-        [Pleroma.Upload.Filter.Exiftool]
+      if filters.read_description do
+        enabled_filters ++ [Pleroma.Upload.Filter.Exiftool.ReadDescription]
       else
-        []
+        enabled_filters
+      end
+
+    enabled_filters =
+      if filters.strip_metadata do
+        enabled_filters ++ [Pleroma.Upload.Filter.Exiftool.StripMetadata]
+      else
+        enabled_filters
       end
 
     enabled_filters =

lib/mix/tasks/pleroma/refresh_counter_cache.ex

@@ -11,7 +11,6 @@ defmodule Mix.Tasks.Pleroma.RefreshCounterCache do
   alias Pleroma.CounterCache
   alias Pleroma.Repo
 
-  require Logger
   import Ecto.Query
 
   def run([]) do

lib/mix/tasks/pleroma/search/meilisearch.ex

@@ -48,7 +48,7 @@ defmodule Mix.Tasks.Pleroma.Search.Meilisearch do
         ]
       )
 
-    IO.puts("Created indices. Starting to insert posts.")
+    shell_info("Created indices. Starting to insert posts.")
 
     chunk_size = Pleroma.Config.get([Pleroma.Search.Meilisearch, :initial_indexing_chunk_size])
 
@@ -65,7 +65,7 @@ defmodule Mix.Tasks.Pleroma.Search.Meilisearch do
           )
 
         count = query |> Pleroma.Repo.aggregate(:count, :data)
-        IO.puts("Entries to index: #{count}")
+        shell_info("Entries to index: #{count}")
 
         Pleroma.Repo.stream(
           query,
@@ -92,10 +92,10 @@ defmodule Mix.Tasks.Pleroma.Search.Meilisearch do
 
           with {:ok, res} <- result do
             if not Map.has_key?(res, "indexUid") do
-              IO.puts("\nFailed to index: #{inspect(result)}")
+              shell_info("\nFailed to index: #{inspect(result)}")
             end
           else
-            e -> IO.puts("\nFailed to index due to network error: #{inspect(e)}")
+            e -> shell_error("\nFailed to index due to network error: #{inspect(e)}")
           end
         end)
         |> Stream.run()
@@ -126,11 +126,15 @@ defmodule Mix.Tasks.Pleroma.Search.Meilisearch do
     decoded = Jason.decode!(result.body)
 
     if decoded["results"] do
-      Enum.each(decoded["results"], fn %{"description" => desc, "key" => key} ->
-        IO.puts("#{desc}: #{key}")
+      Enum.each(decoded["results"], fn
+        %{"name" => name, "key" => key} ->
+          shell_info("#{name}: #{key}")
+
+        %{"description" => desc, "key" => key} ->
+          shell_info("#{desc}: #{key}")
       end)
     else
-      IO.puts("Error fetching the keys, check the master key is correct: #{inspect(decoded)}")
+      shell_error("Error fetching the keys, check the master key is correct: #{inspect(decoded)}")
     end
   end
 
@@ -138,7 +142,7 @@ defmodule Mix.Tasks.Pleroma.Search.Meilisearch do
     start_pleroma()
 
     {:ok, result} = meili_get("/indexes/objects/stats")
-    IO.puts("Number of entries: #{result["numberOfDocuments"]}")
-    IO.puts("Indexing? #{result["isIndexing"]}")
+    shell_info("Number of entries: #{result["numberOfDocuments"]}")
+    shell_info("Indexing? #{result["isIndexing"]}")
   end
 end

lib/mix/tasks/pleroma/security.ex

@@ -38,7 +38,7 @@ defmodule Mix.Tasks.Pleroma.Security do
     Logger.put_process_level(self(), :notice)
     start_pleroma()
 
-    IO.puts("""
+    shell_info("""
     +------------------------+
     |  SPOOF SEARCH UPLOADS  |
     +------------------------+
@@ -55,7 +55,7 @@ defmodule Mix.Tasks.Pleroma.Security do
     Logger.put_process_level(self(), :notice)
     start_pleroma()
 
-    IO.puts("""
+    shell_info("""
     +----------------------+
     |  SPOOF SEARCH NOTES  |
     +----------------------+
@@ -77,7 +77,7 @@ defmodule Mix.Tasks.Pleroma.Security do
           uploads_search_spoofs_local_dir(Config.get!([Pleroma.Uploaders.Local, :uploads]))
 
         _ ->
-          IO.puts("""
+          shell_info("""
           NOTE:
             Not using local uploader; thus not affected by this exploit.
             It's impossible to check for files, but in case local uploader was used before
@@ -98,13 +98,13 @@ defmodule Mix.Tasks.Pleroma.Security do
 
     orphaned_attachs = upload_search_orphaned_attachments(not_orphaned_urls)
 
-    IO.puts("\nSearch concluded; here are the results:")
+    shell_info("\nSearch concluded; here are the results:")
     pretty_print_list_with_title(emoji, "Emoji")
     pretty_print_list_with_title(files, "Uploaded Files")
     pretty_print_list_with_title(post_attachs, "(Not Deleted) Post Attachments")
     pretty_print_list_with_title(orphaned_attachs, "Orphaned Uploads")
 
-    IO.puts("""
+    shell_info("""
     In total found
       #{length(emoji)} emoji
       #{length(files)} uploads
@@ -116,7 +116,7 @@ defmodule Mix.Tasks.Pleroma.Security do
   defp uploads_search_spoofs_local_dir(dir) do
     local_dir = String.replace_suffix(dir, "/", "")
 
-    IO.puts("Searching for suspicious files in #{local_dir}...")
+    shell_info("Searching for suspicious files in #{local_dir}...")
 
     glob_ext = "{" <> Enum.join(@activity_exts, ",") <> "}"
 
@@ -128,7 +128,7 @@ defmodule Mix.Tasks.Pleroma.Security do
   end
 
   defp uploads_search_spoofs_notes() do
-    IO.puts("Now querying DB for posts with spoofing attachments. This might take a while...")
+    shell_info("Now querying DB for posts with spoofing attachments. This might take a while...")
 
     patterns = [local_id_pattern() | activity_ext_url_patterns()]
 
@@ -153,7 +153,7 @@ defmodule Mix.Tasks.Pleroma.Security do
   end
 
   defp upload_search_orphaned_attachments(not_orphaned_urls) do
-    IO.puts("""
+    shell_info("""
     Now querying DB for orphaned spoofing attachment (i.e. their post was deleted,
     but if :cleanup_attachments was not enabled traces remain in the database)
     This might take a bit...
@@ -184,7 +184,7 @@ defmodule Mix.Tasks.Pleroma.Security do
   # | S P O O F - I N S E R T E D |
   # +-----------------------------+
   defp do_spoof_inserted() do
-    IO.puts("""
+    shell_info("""
     Searching for local posts whose Create activity has no ActivityPub id...
       This is a pretty good indicator, but only for spoofs of local actors
       and only if the spoofing happened after around late 2021.
@@ -194,9 +194,9 @@ defmodule Mix.Tasks.Pleroma.Security do
       search_local_notes_without_create_id()
       |> Enum.sort()
 
-    IO.puts("Done.\n")
+    shell_info("Done.\n")
 
-    IO.puts("""
+    shell_info("""
     Now trying to weed out other poorly hidden spoofs.
     This can't detect all and may have some false positives.
     """)
@@ -207,9 +207,9 @@ defmodule Mix.Tasks.Pleroma.Security do
       search_sus_notes_by_id_patterns()
       |> Enum.filter(fn r -> !(r in likely_spoofed_posts_set) end)
 
-    IO.puts("Done.\n")
+    shell_info("Done.\n")
 
-    IO.puts("""
+    shell_info("""
     Finally, searching for spoofed, local user accounts.
     (It's impossible to detect spoofed remote users)
     """)
@@ -220,7 +220,7 @@ defmodule Mix.Tasks.Pleroma.Security do
     pretty_print_list_with_title(idless_create, "Likely Spoofed Posts")
     pretty_print_list_with_title(spoofed_users, "Spoofed local user accounts")
 
-    IO.puts("""
+    shell_info("""
     In total found:
       #{length(spoofed_users)} bogus users
       #{length(idless_create)} likely spoofed posts
@@ -289,27 +289,27 @@ defmodule Mix.Tasks.Pleroma.Security do
   defp pretty_print_list_with_title(list, title) do
     title_len = String.length(title)
     title_underline = String.duplicate("=", title_len)
-    IO.puts(title)
-    IO.puts(title_underline)
+    shell_info(title)
+    shell_info(title_underline)
     pretty_print_list(list)
   end
 
-  defp pretty_print_list([]), do: IO.puts("")
+  defp pretty_print_list([]), do: shell_info("")
 
   defp pretty_print_list([{a, o} | rest])
        when (is_binary(a) or is_number(a)) and is_binary(o) do
-    IO.puts("  {#{a}, #{o}}")
+    shell_info("  {#{a}, #{o}}")
     pretty_print_list(rest)
   end
 
   defp pretty_print_list([{u, a, o} | rest])
        when is_binary(a) and is_binary(u) and is_binary(o) do
-    IO.puts("  {#{u}, #{a}, #{o}}")
+    shell_info("  {#{u}, #{a}, #{o}}")
     pretty_print_list(rest)
   end
 
   defp pretty_print_list([e | rest]) when is_binary(e) do
-    IO.puts("  #{e}")
+    shell_info("  #{e}")
     pretty_print_list(rest)
   end
 

lib/mix/tasks/pleroma/user.ex

@@ -114,7 +114,7 @@ defmodule Mix.Tasks.Pleroma.User do
          {:ok, token} <- Pleroma.PasswordResetToken.create_token(user) do
       shell_info("Generated password reset token for #{user.nickname}")
 
-      IO.puts("URL: #{~p[/api/v1/pleroma/password_reset/#{token.token}]}")
+      shell_info("URL: #{~p[/api/v1/pleroma/password_reset/#{token.token}]}")
     else
       _ ->
         shell_error("No local user #{nickname}")
@@ -301,7 +301,7 @@ defmodule Mix.Tasks.Pleroma.User do
       shell_info("Generated user invite token " <> String.replace(invite.invite_type, "_", " "))
 
       url = url(~p[/registration/#{invite.token}])
-      IO.puts(url)
+      shell_info(url)
     else
       error ->
         shell_error("Could not create invite token: #{inspect(error)}")
@@ -373,7 +373,7 @@ defmodule Mix.Tasks.Pleroma.User do
       nickname
       |> User.get_cached_by_nickname()
 
-    shell_info("#{inspect(user)}")
+    shell_info(user)
   end
 
   def run(["send_confirmation", nickname]) do
@@ -457,7 +457,7 @@ defmodule Mix.Tasks.Pleroma.User do
 
     with %User{local: true} = user <- User.get_cached_by_nickname(nickname) do
       blocks = User.following_ap_ids(user)
-      IO.puts("#{inspect(blocks)}")
+      shell_info(blocks)
     end
   end
 
@@ -516,12 +516,12 @@ defmodule Mix.Tasks.Pleroma.User do
            {:follow_data, Pleroma.Web.ActivityPub.Utils.fetch_latest_follow(local, remote)} do
       calculated_state = User.following?(local, remote)
 
-      IO.puts(
+      shell_info(
         "Request state is #{request_state}, vs calculated state of following=#{calculated_state}"
       )
 
       if calculated_state == false && request_state == "accept" do
-        IO.puts("Discrepancy found, fixing")
+        shell_info("Discrepancy found, fixing")
         Pleroma.Web.CommonAPI.reject_follow_request(local, remote)
         shell_info("Relationship fixed")
       else
@@ -551,14 +551,14 @@ defmodule Mix.Tasks.Pleroma.User do
     |> Stream.each(fn users ->
       users
       |> Enum.each(fn user ->
-        IO.puts("Re-Resolving: #{user.ap_id}")
+        shell_info("Re-Resolving: #{user.ap_id}")
 
         with {:ok, user} <- Pleroma.User.fetch_by_ap_id(user.ap_id),
              changeset <- Pleroma.User.update_changeset(user),
              {:ok, _user} <- Pleroma.User.update_and_set_cache(changeset) do
           :ok
         else
-          error -> IO.puts("Could not resolve: #{user.ap_id}, #{inspect(error)}")
+          error -> shell_info("Could not resolve: #{user.ap_id}, #{inspect(error)}")
         end
       end)
     end)

lib/pleroma/activity.ex

@@ -258,6 +258,27 @@ defmodule Pleroma.Activity do
 
   def get_create_by_object_ap_id(_), do: nil
 
+  @doc """
+  Accepts a list of `ap__id`.
+  Returns a query yielding Create activities for the given objects,
+  in the same order as they were specified in the input list.
+  """
+  @spec get_presorted_create_by_object_ap_id([String.t()]) :: Ecto.Queryable.t()
+  def get_presorted_create_by_object_ap_id(ap_ids) do
+    from(
+      a in Activity,
+      join:
+        ids in fragment(
+          "SELECT * FROM UNNEST(?::text[]) WITH ORDINALITY AS ids(ap_id, ord)",
+          ^ap_ids
+        ),
+      on:
+        ids.ap_id == fragment("?->>'object'", a.data) and
+          fragment("?->>'type'", a.data) == "Create",
+      order_by: [asc: ids.ord]
+    )
+  end
+
   @doc """
   Accepts `ap_id` or list of `ap_id`.
   Returns a query.

lib/pleroma/activity/html.ex

@@ -28,7 +28,7 @@ defmodule Pleroma.Activity.HTML do
     end
   end
 
-  defp add_cache_key_for(activity_id, additional_key) do
+  def add_cache_key_for(activity_id, additional_key) do
     current = get_cache_keys_for(activity_id)
 
     unless additional_key in current do

lib/pleroma/application.ex

@@ -95,34 +95,17 @@ defmodule Pleroma.Application do
 
     opts = [strategy: :one_for_one, name: Pleroma.Supervisor, max_restarts: max_restarts]
 
-    with {:ok, data} <- Supervisor.start_link(children, opts) do
-      set_postgres_server_version()
-      {:ok, data}
-    else
+    case Supervisor.start_link(children, opts) do
+      {:ok, data} ->
+        {:ok, data}
+
       e ->
-        Logger.error("Failed to start!")
-        Logger.error("#{inspect(e)}")
+        Logger.critical("Failed to start!")
+        Logger.critical("#{inspect(e)}")
         e
     end
   end
 
-  defp set_postgres_server_version do
-    version =
-      with %{rows: [[version]]} <- Ecto.Adapters.SQL.query!(Pleroma.Repo, "show server_version"),
-           {num, _} <- Float.parse(version) do
-        num
-      else
-        e ->
-          Logger.warning(
-            "Could not get the postgres version: #{inspect(e)}.\nSetting the default value of 9.6"
-          )
-
-          9.6
-      end
-
-    :persistent_term.put({Pleroma.Repo, :postgres_version}, version)
-  end
-
   def load_custom_modules do
     dir = Config.get([:modules, :runtime_dir])
 
@@ -179,7 +162,9 @@ defmodule Pleroma.Application do
       build_cachex("translations", default_ttl: :timer.hours(24 * 30), limit: 2500),
       build_cachex("instances", default_ttl: :timer.hours(24), ttl_interval: 1000, limit: 2500),
       build_cachex("request_signatures", default_ttl: :timer.hours(24 * 30), limit: 3000),
-      build_cachex("rel_me", default_ttl: :timer.hours(24 * 30), limit: 300)
+      build_cachex("rel_me", default_ttl: :timer.hours(24 * 30), limit: 300),
+      build_cachex("host_meta", default_ttl: :timer.minutes(120), limit: 5000),
+      build_cachex("http_backoff", default_ttl: :timer.hours(24 * 30), limit: 10000)
     ]
   end
 
@@ -279,7 +264,9 @@ defmodule Pleroma.Application do
   defp http_children do
     proxy_url = Config.get([:http, :proxy_url])
     proxy = Pleroma.HTTP.AdapterHelper.format_proxy(proxy_url)
-    pool_size = Config.get([:http, :pool_size])
+    pool_size = Config.get([:http, :pool_size], 10)
+    pool_timeout = Config.get([:http, :pool_timeout], 60_000)
+    connection_timeout = Config.get([:http, :conn_max_idle_time], 10_000)
 
     :public_key.cacerts_load()
 
@@ -289,6 +276,8 @@ defmodule Pleroma.Application do
       |> Pleroma.HTTP.AdapterHelper.add_pool_size(pool_size)
       |> Pleroma.HTTP.AdapterHelper.maybe_add_proxy_pool(proxy)
       |> Pleroma.HTTP.AdapterHelper.ensure_ipv6()
+      |> Pleroma.HTTP.AdapterHelper.add_default_conn_max_idle_time(connection_timeout)
+      |> Pleroma.HTTP.AdapterHelper.add_default_pool_max_idle_time(pool_timeout)
       |> Keyword.put(:name, MyFinch)
 
     [{Finch, config}]

lib/pleroma/application_requirements.ex

@@ -164,7 +164,8 @@ defmodule Pleroma.ApplicationRequirements do
 
   defp check_system_commands!(:ok) do
     filter_commands_statuses = [
-      check_filter(Pleroma.Upload.Filter.Exiftool, "exiftool"),
+      check_filter(Pleroma.Upload.Filter.Exiftool.StripMetadata, "exiftool"),
+      check_filter(Pleroma.Upload.Filter.Exiftool.ReadDescription, "exiftool"),
       check_filter(Pleroma.Upload.Filter.Mogrify, "mogrify"),
       check_filter(Pleroma.Upload.Filter.Mogrifun, "mogrify"),
       check_filter(Pleroma.Upload.Filter.AnalyzeMetadata, "mogrify"),

lib/pleroma/config/deprecation_warnings.ex

@@ -22,6 +22,43 @@ defmodule Pleroma.Config.DeprecationWarnings do
      "\n* `config :pleroma, :instance, :quarantined_instances` is now covered by `:pleroma, :mrf_simple, :reject`"}
   ]
 
+  def check_exiftool_filter do
+    filters = Config.get([Pleroma.Upload]) |> Keyword.get(:filters, [])
+
+    if Pleroma.Upload.Filter.Exiftool in filters do
+      Logger.warning("""
+      !!!DEPRECATION WARNING!!!
+      Your config is using Exiftool as a filter instead of Exiftool.StripMetadata. This should work for now, but you are advised to change to the new configuration to prevent possible issues later:
+
+      ```
+      config :pleroma, Pleroma.Upload,
+        filters: [Pleroma.Upload.Filter.Exiftool]
+      ```
+
+      Is now
+
+
+      ```
+      config :pleroma, Pleroma.Upload,
+        filters: [Pleroma.Upload.Filter.Exiftool.StripMetadata]
+      ```
+      """)
+
+      new_config =
+        filters
+        |> Enum.map(fn
+          Pleroma.Upload.Filter.Exiftool -> Pleroma.Upload.Filter.Exiftool.StripMetadata
+          filter -> filter
+        end)
+
+      Config.put([Pleroma.Upload, :filters], new_config)
+
+      :error
+    else
+      :ok
+    end
+  end
+
   def check_simple_policy_tuples do
     has_strings =
       Config.get([:mrf_simple])
@@ -184,7 +221,8 @@ defmodule Pleroma.Config.DeprecationWarnings do
       check_simple_policy_tuples(),
       check_http_adapter(),
       check_uploader_base_url_set(),
-      check_uploader_base_url_is_not_base_domain()
+      check_uploader_base_url_is_not_base_domain(),
+      check_exiftool_filter()
     ]
     |> Enum.reduce(:ok, fn
       :ok, :ok -> :ok

lib/pleroma/config/transfer_task.ex

@@ -24,7 +24,6 @@ defmodule Pleroma.Config.TransferTask do
   defp reboot_time_subkeys,
     do: [
       {:pleroma, Pleroma.Captcha, [:seconds_valid]},
-      {:pleroma, Pleroma.Upload, [:proxy_remote]},
       {:pleroma, :instance, [:upload_limit]},
       {:pleroma, :http, [:pool_size]},
       {:pleroma, :http, [:proxy_url]}

lib/pleroma/constants.ex

@@ -64,4 +64,7 @@ defmodule Pleroma.Constants do
       "Service"
     ]
   )
+
+  # Internally used as top-level types for media attachments and user images
+  const(attachment_types, do: ["Document", "Image"])
 end

lib/pleroma/html.ex

@@ -6,8 +6,6 @@ defmodule Pleroma.HTML do
   # Scrubbers are compiled on boot so they can be configured in OTP releases
   #  @on_load :compile_scrubbers
 
-  @cachex Pleroma.Config.get([:cachex, :provider], Cachex)
-
   def compile_scrubbers do
     dir = Path.join(:code.priv_dir(:pleroma), "scrubbers")
 
@@ -67,22 +65,9 @@ defmodule Pleroma.HTML do
     end
   end
 
-  def extract_first_external_url_from_object(%{data: %{"content" => content}} = object)
+  @spec extract_first_external_url_from_object(Pleroma.Object.t()) :: String.t() | nil
+  def extract_first_external_url_from_object(%{data: %{"content" => content}})
       when is_binary(content) do
-    unless object.data["fake"] do
-      key = "URL|#{object.id}"
-
-      @cachex.fetch!(:scrubber_cache, key, fn _key ->
-        {:commit, {:ok, extract_first_external_url(content)}}
-      end)
-    else
-      {:ok, extract_first_external_url(content)}
-    end
-  end
-
-  def extract_first_external_url_from_object(_), do: {:error, :no_content}
-
-  def extract_first_external_url(content) do
     content
     |> Floki.parse_fragment!()
     |> Floki.find("a:not(.mention,.hashtag,.attachment,[rel~=\"tag\"])")
@@ -90,4 +75,6 @@ defmodule Pleroma.HTML do
     |> Floki.attribute("href")
     |> Enum.at(0)
   end
+
+  def extract_first_external_url_from_object(_), do: nil
 end

lib/pleroma/http.ex

@@ -74,7 +74,12 @@ defmodule Pleroma.HTTP do
     request = build_request(method, headers, options, url, body, params)
     client = Tesla.client([Tesla.Middleware.FollowRedirects, Tesla.Middleware.Telemetry])
 
+    Logger.debug("Outbound: #{method} #{url}")
     request(client, request)
+  rescue
+    e ->
+      Logger.error("Failed to fetch #{url}: #{inspect(e)}")
+      {:error, :fetch_error}
   end
 
   @spec request(Client.t(), keyword()) :: {:ok, Env.t()} | {:error, any()}

lib/pleroma/http/adapter_helper.ex

@@ -116,6 +116,20 @@ defmodule Pleroma.HTTP.AdapterHelper do
     put_in(opts, [:pools, :default, :conn_opts, :transport_opts, :inet6], true)
   end
 
+  def add_default_pool_max_idle_time(opts, pool_timeout) do
+    opts
+    |> maybe_add_pools()
+    |> maybe_add_default_pool()
+    |> put_in([:pools, :default, :pool_max_idle_time], pool_timeout)
+  end
+
+  def add_default_conn_max_idle_time(opts, connection_timeout) do
+    opts
+    |> maybe_add_pools()
+    |> maybe_add_default_pool()
+    |> put_in([:pools, :default, :conn_max_idle_time], connection_timeout)
+  end
+
   @doc """
   Merge default connection & adapter options with received ones.
   """

lib/pleroma/http/backoff.ex

@@ -0,0 +1,121 @@
+defmodule Pleroma.HTTP.Backoff do
+  alias Pleroma.HTTP
+  require Logger
+
+  @cachex Pleroma.Config.get([:cachex, :provider], Cachex)
+  @backoff_cache :http_backoff_cache
+
+  # attempt to parse a timestamp from a header
+  # returns nil if it can't parse the timestamp
+  @spec timestamp_or_nil(binary) :: DateTime.t() | nil
+  defp timestamp_or_nil(header) do
+    case DateTime.from_iso8601(header) do
+      {:ok, stamp, _} ->
+        stamp
+
+      _ ->
+        nil
+    end
+  end
+
+  # attempt to parse the x-ratelimit-reset header from the headers
+  @spec x_ratelimit_reset(headers :: list) :: DateTime.t() | nil
+  defp x_ratelimit_reset(headers) do
+    with {_header, value} <- List.keyfind(headers, "x-ratelimit-reset", 0),
+         true <- is_binary(value) do
+      timestamp_or_nil(value)
+    else
+      _ ->
+        nil
+    end
+  end
+
+  # attempt to parse the Retry-After header from the headers
+  # this can be either a timestamp _or_ a number of seconds to wait!
+  # we'll return a datetime if we can parse it, or nil if we can't
+  @spec retry_after(headers :: list) :: DateTime.t() | nil
+  defp retry_after(headers) do
+    with {_header, value} <- List.keyfind(headers, "retry-after", 0),
+         true <- is_binary(value) do
+      # first, see if it's an integer
+      case Integer.parse(value) do
+        {seconds, ""} ->
+          Logger.debug("Parsed Retry-After header: #{seconds} seconds")
+          DateTime.utc_now() |> Timex.shift(seconds: seconds)
+
+        _ ->
+          # if it's not an integer, try to parse it as a timestamp
+          timestamp_or_nil(value)
+      end
+    else
+      _ ->
+        nil
+    end
+  end
+
+  # given a set of headers, will attempt to find the next backoff timestamp
+  # if it can't find one, it will default to 5 minutes from now
+  @spec next_backoff_timestamp(%{headers: list}) :: DateTime.t()
+  defp next_backoff_timestamp(%{headers: headers}) when is_list(headers) do
+    default_5_minute_backoff =
+      DateTime.utc_now()
+      |> Timex.shift(seconds: 5 * 60)
+
+    backoff =
+      [&x_ratelimit_reset/1, &retry_after/1]
+      |> Enum.map(& &1.(headers))
+      |> Enum.find(&(&1 != nil))
+
+    if is_nil(backoff) do
+      Logger.debug("No backoff headers found, defaulting to 5 minutes from now")
+      default_5_minute_backoff
+    else
+      Logger.debug("Found backoff header, will back off until: #{backoff}")
+      backoff
+    end
+  end
+
+  defp next_backoff_timestamp(_), do: DateTime.utc_now() |> Timex.shift(seconds: 5 * 60)
+
+  # utility function to check the HTTP response for potential backoff headers
+  # will check if we get a 429 or 503 response, and if we do, will back off for a bit
+  @spec check_backoff({:ok | :error, HTTP.Env.t()}, binary()) ::
+          {:ok | :error, HTTP.Env.t()} | {:error, :ratelimit}
+  defp check_backoff({:ok, env}, host) do
+    case env.status do
+      status when status in [429, 503] ->
+        Logger.error("Rate limited on #{host}! Backing off...")
+        timestamp = next_backoff_timestamp(env)
+        ttl = Timex.diff(timestamp, DateTime.utc_now(), :seconds)
+        # we will cache the host for 5 minutes
+        @cachex.put(@backoff_cache, host, true, ttl: ttl)
+        {:error, :ratelimit}
+
+      _ ->
+        {:ok, env}
+    end
+  end
+
+  defp check_backoff(env, _), do: env
+
+  @doc """
+  this acts as a single throughput for all GET requests
+  we will check if the host is in the cache, and if it is, we will automatically fail the request
+  this ensures that we don't hammer the server with requests, and instead wait for the backoff to expire
+  this is a very simple implementation, and can be improved upon!
+  """
+  @spec get(binary, list, list) :: {:ok | :error, HTTP.Env.t()} | {:error, :ratelimit}
+  def get(url, headers \\ [], options \\ []) do
+    %{host: host} = URI.parse(url)
+
+    case @cachex.get(@backoff_cache, host) do
+      {:ok, nil} ->
+        url
+        |> HTTP.get(headers, options)
+        |> check_backoff(host)
+
+      _ ->
+        {:error, :ratelimit}
+    end
+  end
+end

lib/pleroma/object/fetcher.ex

@@ -354,7 +354,7 @@ defmodule Pleroma.Object.Fetcher do
 
     with {:ok, %{body: body, status: code, headers: headers, url: final_url}}
          when code in 200..299 <-
-           HTTP.get(id, headers),
+           HTTP.Backoff.get(id, headers),
          remote_host <-
            URI.parse(final_url).host,
          {:cross_domain_redirect, false} <-

lib/pleroma/scheduled_activity.ex

@@ -28,7 +28,7 @@ defmodule Pleroma.ScheduledActivity do
     timestamps()
   end
 
-  def changeset(%ScheduledActivity{} = scheduled_activity, attrs) do
+  defp changeset(%ScheduledActivity{} = scheduled_activity, attrs) do
     scheduled_activity
     |> cast(attrs, [:scheduled_at, :params])
     |> validate_required([:scheduled_at, :params])
@@ -40,26 +40,36 @@ defmodule Pleroma.ScheduledActivity do
          %{changes: %{params: %{"media_ids" => media_ids} = params}} = changeset
        )
        when is_list(media_ids) do
-    media_attachments = Utils.attachments_from_ids(%{media_ids: media_ids})
+    user = User.get_by_id(changeset.data.user_id)
 
-    params =
-      params
-      |> Map.put("media_attachments", media_attachments)
-      |> Map.put("media_ids", media_ids)
+    case Utils.attachments_from_ids(user, %{media_ids: media_ids}) do
+      media_attachments when is_list(media_attachments) ->
+        params =
+          params
+          |> Map.put("media_attachments", media_attachments)
+          |> Map.put("media_ids", media_ids)
 
-    put_change(changeset, :params, params)
+        put_change(changeset, :params, params)
+
+      {:error, _} = e ->
+        e
+
+      e ->
+        {:error, e}
+    end
   end
 
   defp with_media_attachments(changeset), do: changeset
 
-  def update_changeset(%ScheduledActivity{} = scheduled_activity, attrs) do
+  defp update_changeset(%ScheduledActivity{} = scheduled_activity, attrs) do
+    # note: should this ever allow swapping media attachments, make sure ownership is checked
     scheduled_activity
     |> cast(attrs, [:scheduled_at])
     |> validate_required([:scheduled_at])
     |> validate_scheduled_at()
   end
 
-  def validate_scheduled_at(changeset) do
+  defp validate_scheduled_at(changeset) do
     validate_change(changeset, :scheduled_at, fn _, scheduled_at ->
       cond do
         not far_enough?(scheduled_at) ->
@@ -77,7 +87,7 @@ defmodule Pleroma.ScheduledActivity do
     end)
   end
 
-  def exceeds_daily_user_limit?(user_id, scheduled_at) do
+  defp exceeds_daily_user_limit?(user_id, scheduled_at) do
     ScheduledActivity
     |> where(user_id: ^user_id)
     |> where([sa], type(sa.scheduled_at, :date) == type(^scheduled_at, :date))
@@ -86,7 +96,7 @@ defmodule Pleroma.ScheduledActivity do
     |> Kernel.>=(Config.get([ScheduledActivity, :daily_user_limit]))
   end
 
-  def exceeds_total_user_limit?(user_id) do
+  defp exceeds_total_user_limit?(user_id) do
     ScheduledActivity
     |> where(user_id: ^user_id)
     |> select([sa], count(sa.id))
@@ -108,20 +118,29 @@ defmodule Pleroma.ScheduledActivity do
     diff > @min_offset
   end
 
-  def new(%User{} = user, attrs) do
+  defp new(%User{} = user, attrs) do
     changeset(%ScheduledActivity{user_id: user.id}, attrs)
   end
 
   @doc """
   Creates ScheduledActivity and add to queue to perform at scheduled_at date
   """
-  @spec create(User.t(), map()) :: {:ok, ScheduledActivity.t()} | {:error, Ecto.Changeset.t()}
+  @spec create(User.t(), map()) :: {:ok, ScheduledActivity.t()} | {:error, any()}
   def create(%User{} = user, attrs) do
-    Multi.new()
-    |> Multi.insert(:scheduled_activity, new(user, attrs))
-    |> maybe_add_jobs(Config.get([ScheduledActivity, :enabled]))
-    |> Repo.transaction()
-    |> transaction_response
+    case new(user, attrs) do
+      %Ecto.Changeset{} = sched_data ->
+        Multi.new()
+        |> Multi.insert(:scheduled_activity, sched_data)
+        |> maybe_add_jobs(Config.get([ScheduledActivity, :enabled]))
+        |> Repo.transaction()
+        |> transaction_response
+
+      {:error, _} = e ->
+        e
+
+      e ->
+        {:error, e}
+    end
   end
 
   defp maybe_add_jobs(multi, true) do
@@ -187,17 +206,7 @@ defmodule Pleroma.ScheduledActivity do
     |> where(user_id: ^user.id)
   end
 
-  def due_activities(offset \\ 0) do
-    naive_datetime =
-      NaiveDateTime.utc_now()
-      |> NaiveDateTime.add(offset, :millisecond)
-
-    ScheduledActivity
-    |> where([sa], sa.scheduled_at < ^naive_datetime)
-    |> Repo.all()
-  end
-
-  def job_query(scheduled_activity_id) do
+  defp job_query(scheduled_activity_id) do
     from(j in Oban.Job,
       where: j.queue == "scheduled_activities",
       where: fragment("args ->> 'activity_id' = ?::text", ^to_string(scheduled_activity_id))

lib/pleroma/search/database_search.ex

@@ -21,19 +21,12 @@ defmodule Pleroma.Search.DatabaseSearch do
     offset = Keyword.get(options, :offset, 0)
     author = Keyword.get(options, :author)
 
-    search_function =
-      if :persistent_term.get({Pleroma.Repo, :postgres_version}) >= 11 do
-        :websearch
-      else
-        :plain
-      end
-
     try do
       Activity
       |> Activity.with_preloaded_object()
       |> Activity.restrict_deactivated_users()
       |> restrict_public()
-      |> query_with(index_type, search_query, search_function)
+      |> query_with(index_type, search_query)
       |> maybe_restrict_local(user)
       |> maybe_restrict_author(author)
       |> maybe_restrict_blocked(user)
@@ -72,25 +65,7 @@ defmodule Pleroma.Search.DatabaseSearch do
     )
   end
 
-  defp query_with(q, :gin, search_query, :plain) do
-    %{rows: [[tsc]]} =
-      Ecto.Adapters.SQL.query!(
-        Pleroma.Repo,
-        "select current_setting('default_text_search_config')::regconfig::oid;"
-      )
-
-    from([a, o] in q,
-      where:
-        fragment(
-          "to_tsvector(?::oid::regconfig, ?->>'content') @@ plainto_tsquery(?)",
-          ^tsc,
-          o.data,
-          ^search_query
-        )
-    )
-  end
-
-  defp query_with(q, :gin, search_query, :websearch) do
+  defp query_with(q, :gin, search_query) do
     %{rows: [[tsc]]} =
       Ecto.Adapters.SQL.query!(
         Pleroma.Repo,
@@ -108,19 +83,7 @@ defmodule Pleroma.Search.DatabaseSearch do
     )
   end
 
-  defp query_with(q, :rum, search_query, :plain) do
-    from([a, o] in q,
-      where:
-        fragment(
-          "? @@ plainto_tsquery(?)",
-          o.fts_content,
-          ^search_query
-        ),
-      order_by: [fragment("? <=> now()::date", o.inserted_at)]
-    )
-  end
-
-  defp query_with(q, :rum, search_query, :websearch) do
+  defp query_with(q, :rum, search_query) do
     from([a, o] in q,
       where:
         fragment(

lib/pleroma/search/meilisearch.ex

@@ -5,15 +5,27 @@ defmodule Pleroma.Search.Meilisearch do
   alias Pleroma.Activity
 
   import Pleroma.Search.DatabaseSearch
-  import Ecto.Query
 
   @behaviour Pleroma.Search.SearchBackend
 
-  defp meili_headers do
-    private_key = Pleroma.Config.get([Pleroma.Search.Meilisearch, :private_key])
+  defp meili_headers(key) do
+    key_header =
+      if is_nil(key), do: [], else: [{"Authorization", "Bearer #{key}"}]
 
-    [{"Content-Type", "application/json"}] ++
-      if is_nil(private_key), do: [], else: [{"Authorization", "Bearer #{private_key}"}]
+    [{"Content-Type", "application/json"} | key_header]
+  end
+
+  defp meili_headers_admin do
+    private_key = Pleroma.Config.get([Pleroma.Search.Meilisearch, :private_key])
+    meili_headers(private_key)
+  end
+
+  defp meili_headers_search do
+    search_key =
+      Pleroma.Config.get([Pleroma.Search.Meilisearch, :search_key]) ||
+        Pleroma.Config.get([Pleroma.Search.Meilisearch, :private_key])
+
+    meili_headers(search_key)
   end
 
   def meili_get(path) do
@@ -22,7 +34,7 @@ defmodule Pleroma.Search.Meilisearch do
     result =
       Pleroma.HTTP.get(
         Path.join(endpoint, path),
-        meili_headers()
+        meili_headers_admin()
       )
 
     with {:ok, res} <- result do
@@ -30,14 +42,14 @@ defmodule Pleroma.Search.Meilisearch do
     end
   end
 
-  def meili_post(path, params) do
+  defp meili_search(params) do
     endpoint = Pleroma.Config.get([Pleroma.Search.Meilisearch, :url])
 
     result =
       Pleroma.HTTP.post(
-        Path.join(endpoint, path),
+        Path.join(endpoint, "/indexes/objects/search"),
         Jason.encode!(params),
-        meili_headers()
+        meili_headers_search()
       )
 
     with {:ok, res} <- result do
@@ -53,7 +65,7 @@ defmodule Pleroma.Search.Meilisearch do
         :put,
         Path.join(endpoint, path),
         Jason.encode!(params),
-        meili_headers(),
+        meili_headers_admin(),
         []
       )
 
@@ -70,7 +82,7 @@ defmodule Pleroma.Search.Meilisearch do
         :delete,
         Path.join(endpoint, path),
         "",
-        meili_headers(),
+        meili_headers_admin(),
         []
       )
   end
@@ -81,25 +93,20 @@ defmodule Pleroma.Search.Meilisearch do
     author = Keyword.get(options, :author)
 
     res =
-      meili_post(
-        "/indexes/objects/search",
-        %{q: query, offset: offset, limit: limit}
-      )
+      meili_search(%{q: query, offset: offset, limit: limit})
 
     with {:ok, result} <- res do
       hits = result["hits"] |> Enum.map(& &1["ap"])
 
       try do
         hits
-        |> Activity.create_by_object_ap_id()
-        |> Activity.with_preloaded_object()
+        |> Activity.get_presorted_create_by_object_ap_id()
         |> Activity.with_preloaded_object()
         |> Activity.restrict_deactivated_users()
         |> maybe_restrict_local(user)
         |> maybe_restrict_author(author)
         |> maybe_restrict_blocked(user)
         |> maybe_fetch(user, query)
-        |> order_by([object: obj], desc: obj.data["published"])
         |> Pleroma.Repo.all()
       rescue
         _ -> maybe_fetch([], user, query)

lib/pleroma/signature.ex

@@ -10,7 +10,7 @@ defmodule Pleroma.Signature do
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
 
-  @known_suffixes ["/publickey", "/main-key"]
+  @known_suffixes ["/publickey", "/main-key", "#key"]
 
   def key_id_to_actor_id(key_id) do
     uri =

lib/pleroma/upload.ex

@@ -13,7 +13,6 @@ defmodule Pleroma.Upload do
   * `:uploader`: override uploader
   * `:filters`: override filters
   * `:size_limit`: override size limit
-  * `:activity_type`: override activity type
 
   The `%Pleroma.Upload{}` struct: all documented fields are meant to be overwritten in filters:
 
@@ -48,7 +47,6 @@ defmodule Pleroma.Upload do
   @type option ::
           {:type, :avatar | :banner | :background}
           | {:description, String.t()}
-          | {:activity_type, String.t()}
           | {:size_limit, nil | non_neg_integer()}
           | {:uploader, module()}
           | {:filters, [module()]}
@@ -61,12 +59,23 @@ defmodule Pleroma.Upload do
           width: integer(),
           height: integer(),
           blurhash: String.t(),
+          description: String.t(),
           path: String.t()
         }
 
   @always_enabled_filters [Pleroma.Upload.Filter.Dedupe]
 
-  defstruct [:id, :name, :tempfile, :content_type, :width, :height, :blurhash, :path]
+  defstruct [
+    :id,
+    :name,
+    :tempfile,
+    :content_type,
+    :width,
+    :height,
+    :blurhash,
+    :description,
+    :path
+  ]
 
   @spec store(source, options :: [option()]) :: {:ok, Map.t()} | {:error, any()}
   @doc "Store a file. If using a `Plug.Upload{}` as the source, be sure to use `Majic.Plug` to ensure its content_type and filename is correct."
@@ -76,7 +85,7 @@ defmodule Pleroma.Upload do
     with {:ok, upload} <- prepare_upload(upload, opts),
          upload = %__MODULE__{upload | path: upload.path || "#{upload.id}/#{upload.name}"},
          {:ok, upload} <- Pleroma.Upload.Filter.filter(opts.filters, upload),
-         description = Map.get(opts, :description) || "",
+         description = Map.get(upload, :description) || "",
          {_, true} <-
            {:description_limit,
             String.length(description) <= Pleroma.Config.get([:instance, :description_limit])},
@@ -132,7 +141,7 @@ defmodule Pleroma.Upload do
       end
 
     %{
-      activity_type: Keyword.get(opts, :activity_type, activity_type),
+      activity_type: activity_type,
       size_limit: Keyword.get(opts, :size_limit, size_limit),
       uploader: Keyword.get(opts, :uploader, Pleroma.Config.get([__MODULE__, :uploader])),
       filters:
@@ -152,7 +161,8 @@ defmodule Pleroma.Upload do
          id: UUID.generate(),
          name: file.filename,
          tempfile: file.path,
-         content_type: file.content_type
+         content_type: file.content_type,
+         description: opts.description
        }}
     end
   end
@@ -172,7 +182,8 @@ defmodule Pleroma.Upload do
          id: UUID.generate(),
          name: hash <> "." <> ext,
          tempfile: tmp_path,
-         content_type: content_type
+         content_type: content_type,
+         description: opts.description
        }}
     end
   end

lib/pleroma/upload/filter/exiftool/read_description.ex

@@ -0,0 +1,51 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Upload.Filter.Exiftool.ReadDescription do
+  @moduledoc """
+  Gets a valid description from the related EXIF tags and provides them in the response if no description is provided yet.
+  It will first check ImageDescription, when that doesn't probide a valid description, it will check iptc:Caption-Abstract.
+  A valid description means the fields are filled in and not too long (see `:instance, :description_limit`).
+  """
+  @behaviour Pleroma.Upload.Filter
+
+  @spec filter(Pleroma.Upload.t()) :: {:ok, any()} | {:error, String.t()}
+
+  def filter(%Pleroma.Upload{description: description})
+      when is_binary(description),
+      do: {:ok, :noop}
+
+  def filter(%Pleroma.Upload{tempfile: file} = upload),
+    do: {:ok, :filtered, upload |> Map.put(:description, read_description_from_exif_data(file))}
+
+  def filter(_, _), do: {:ok, :noop}
+
+  defp read_description_from_exif_data(file) do
+    nil
+    |> read_when_empty(file, "-ImageDescription")
+    |> read_when_empty(file, "-iptc:Caption-Abstract")
+  end
+
+  defp read_when_empty(current_description, _, _) when is_binary(current_description),
+    do: current_description
+
+  defp read_when_empty(_, file, tag) do
+    try do
+      {tag_content, 0} =
+        System.cmd("exiftool", ["-b", "-s3", "-ignoreMinorErrors", "-q", "-q", tag, file],
+          parallelism: true
+        )
+
+      tag_content = String.trim(tag_content)
+
+      if tag_content != "" and
+           String.length(tag_content) <=
+             Pleroma.Config.get([:instance, :description_limit]),
+         do: tag_content,
+         else: nil
+    rescue
+      _ in ErlangError -> nil
+    end
+  end
+end

lib/pleroma/upload/filter/exiftool/strip_metadata.ex

@@ -2,24 +2,42 @@
 # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
-defmodule Pleroma.Upload.Filter.Exiftool do
+defmodule Pleroma.Upload.Filter.Exiftool.StripMetadata do
   @moduledoc """
-  Strips GPS related EXIF tags and overwrites the file in place.
+  Tries to strip all image metadata but colorspace and orientation overwriting the file in place.
   Also strips or replaces filesystem metadata e.g., timestamps.
   """
   @behaviour Pleroma.Upload.Filter
 
+  alias Pleroma.Config
+
+  @purge_default ["all", "CommonIFD0"]
+  @preserve_default ["ColorSpaceTags", "Orientation"]
+
   @spec filter(Pleroma.Upload.t()) :: {:ok, :noop} | {:ok, :filtered} | {:error, String.t()}
 
   # Formats not compatible with exiftool at this time
-  def filter(%Pleroma.Upload{content_type: "image/heic"}), do: {:ok, :noop}
   def filter(%Pleroma.Upload{content_type: "image/webp"}), do: {:ok, :noop}
   def filter(%Pleroma.Upload{content_type: "image/svg+xml"}), do: {:ok, :noop}
-  def filter(%Pleroma.Upload{content_type: "image/jxl"}), do: {:ok, :noop}
 
   def filter(%Pleroma.Upload{tempfile: file, content_type: "image" <> _}) do
+    purge_args =
+      Config.get([__MODULE__, :purge], @purge_default)
+      |> Enum.map(fn mgroup -> "-" <> mgroup <> "=" end)
+
+    preserve_args =
+      Config.get([__MODULE__, :preserve], @preserve_default)
+      |> Enum.map(fn mgroup -> "-" <> mgroup end)
+      |> then(fn
+        # If -TagsFromFile is not followed by tag selectors, it will copy most available tags
+        [] -> []
+        args -> ["-TagsFromFile", "@" | args]
+      end)
+
+    args = ["-ignoreMinorErrors", "-overwrite_original" | purge_args] ++ preserve_args ++ [file]
+
     try do
-      case System.cmd("exiftool", ["-overwrite_original", "-gps:all=", file], parallelism: true) do
+      case System.cmd("exiftool", args, parallelism: true) do
         {_response, 0} -> {:ok, :filtered}
         {error, 1} -> {:error, error}
       end

lib/pleroma/web/activity_pub/activity_pub.ex

@@ -155,9 +155,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
       # Splice in the child object if we have one.
       activity = Maps.put_if_present(activity, :object, object)
 
-      ConcurrentLimiter.limit(Pleroma.Web.RichMedia.Helpers, fn ->
-        Task.start(fn -> Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity) end)
-      end)
+      Pleroma.Web.RichMedia.Card.get_by_activity(activity)
 
       # Add local posts to search index
       if local, do: Pleroma.Search.add_to_index(activity)
@@ -185,7 +183,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
           id: "pleroma:fakeid"
         }
 
-        Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)
+        Pleroma.Web.RichMedia.Card.get_by_activity(activity)
         {:ok, activity}
 
       {:remote_limit_pass, _} ->
@@ -1545,11 +1543,19 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
   defp normalize_also_known_as(aka) when is_binary(aka), do: [aka]
   defp normalize_also_known_as(nil), do: []
 
+  defp normalize_attachment(%{} = attachment), do: [attachment]
+  defp normalize_attachment(attachment) when is_list(attachment), do: attachment
+  defp normalize_attachment(_), do: []
+
   defp object_to_user_data(data, additional) do
     fields =
       data
       |> Map.get("attachment", [])
-      |> Enum.filter(fn %{"type" => t} -> t == "PropertyValue" end)
+      |> normalize_attachment()
+      |> Enum.filter(fn
+        %{"type" => t} -> t == "PropertyValue"
+        _ -> false
+      end)
       |> Enum.map(fn fields -> Map.take(fields, ["name", "value"]) end)
 
     emojis =
@@ -1816,19 +1822,20 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
     end
   end
 
-  def pinned_fetch_task(nil), do: nil
-
-  def pinned_fetch_task(%{pinned_objects: pins}) do
-    if Enum.all?(pins, fn {ap_id, _} ->
-         Object.get_cached_by_ap_id(ap_id) ||
-           match?({:ok, _object}, Fetcher.fetch_object_from_id(ap_id))
-       end) do
-      :ok
-    else
-      :error
-    end
+  def enqueue_pin_fetches(%{pinned_objects: pins}) do
+    # enqueue a task to fetch all pinned objects
+    Enum.each(pins, fn {ap_id, _} ->
+      if is_nil(Object.get_cached_by_ap_id(ap_id)) do
+        Pleroma.Workers.RemoteFetcherWorker.enqueue("fetch_remote", %{
+          "id" => ap_id,
+          "depth" => 1
+        })
+      end
+    end)
   end
 
+  def enqueue_pin_fetches(_), do: nil
+
   def make_user_from_ap_id(ap_id, additional \\ []) do
     user = User.get_cached_by_ap_id(ap_id)
 
@@ -1836,8 +1843,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
       Transmogrifier.upgrade_user_from_ap_id(ap_id)
     else
       with {:ok, data} <- fetch_and_prepare_user_from_ap_id(ap_id, additional) do
-        {:ok, _pid} = Task.start(fn -> pinned_fetch_task(data) end)
-
         user =
           if data.ap_id != ap_id do
             User.get_cached_by_ap_id(data.ap_id)
@@ -1849,6 +1854,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
           user
           |> User.remote_user_changeset(data)
           |> User.update_and_set_cache()
+          |> tap(fn _ -> enqueue_pin_fetches(data) end)
         else
           maybe_handle_clashing_nickname(data)
 
@@ -1856,6 +1862,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
           |> User.remote_user_changeset()
           |> Repo.insert()
           |> User.set_cache()
+          |> tap(fn _ -> enqueue_pin_fetches(data) end)
         end
       end
     end

lib/pleroma/web/activity_pub/activity_pub_controller.ex

@@ -12,9 +12,7 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.ActivityPub.InternalFetchActor
   alias Pleroma.Web.ActivityPub.ObjectView
-  alias Pleroma.Web.ActivityPub.Pipeline
   alias Pleroma.Web.ActivityPub.Relay
-  alias Pleroma.Web.ActivityPub.Transmogrifier
   alias Pleroma.Web.ActivityPub.UserView
   alias Pleroma.Web.ActivityPub.Utils
   alias Pleroma.Web.ActivityPub.Visibility
@@ -40,11 +38,9 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
   # Note: :following and :followers must be served even without authentication (as via :api)
   plug(
     EnsureAuthenticatedPlug
-    when action in [:read_inbox, :update_outbox, :whoami, :upload_media]
+    when action in [:read_inbox]
   )
 
-  plug(Majic.Plug, [pool: Pleroma.MajicPool] when action in [:upload_media])
-
   plug(
     Pleroma.Web.Plugs.Cache,
     [query_params: false, tracking_fun: &__MODULE__.track_object_fetch/2]
@@ -160,7 +156,9 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
     end
   end
 
-  # GET /relay/following
+  @doc """
+  GET /relay/following
+  """
   def relay_following(conn, _params) do
     with %{halted: false} = conn <- FederatingPlug.call(conn, []) do
       conn
@@ -197,7 +195,9 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
     end
   end
 
-  # GET /relay/followers
+  @doc """
+  GET /relay/followers
+  """
   def relay_followers(conn, _params) do
     with %{halted: false} = conn <- FederatingPlug.call(conn, []) do
       conn
@@ -317,14 +317,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
     |> represent_service_actor(conn)
   end
 
-  @doc "Returns the authenticated user's ActivityPub User object or a 404 Not Found if non-authenticated"
-  def whoami(%{assigns: %{user: %User{} = user}} = conn, _params) do
-    conn
-    |> put_resp_content_type("application/activity+json")
-    |> put_view(UserView)
-    |> render("user.json", %{user: user})
-  end
-
   def read_inbox(
         %{assigns: %{user: %User{nickname: nickname} = user}} = conn,
         %{"nickname" => nickname, "page" => page?} = params
@@ -375,105 +367,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
     |> json(err)
   end
 
-  defp fix_user_message(%User{ap_id: actor}, %{"type" => "Create", "object" => object} = activity)
-       when is_map(object) do
-    length =
-      [object["content"], object["summary"], object["name"]]
-      |> Enum.filter(&is_binary(&1))
-      |> Enum.join("")
-      |> String.length()
-
-    limit = Pleroma.Config.get([:instance, :limit])
-
-    if length < limit do
-      object =
-        object
-        |> Transmogrifier.strip_internal_fields()
-        |> Map.put("attributedTo", actor)
-        |> Map.put("actor", actor)
-        |> Map.put("id", Utils.generate_object_id())
-
-      {:ok, Map.put(activity, "object", object)}
-    else
-      {:error,
-       dgettext(
-         "errors",
-         "Character limit (%{limit} characters) exceeded, contains %{length} characters",
-         limit: limit,
-         length: length
-       )}
-    end
-  end
-
-  defp fix_user_message(
-         %User{ap_id: actor} = user,
-         %{"type" => "Delete", "object" => object} = activity
-       ) do
-    with {_, %Object{data: object_data}} <- {:normalize, Object.normalize(object, fetch: false)},
-         {_, true} <- {:permission, user.is_moderator || actor == object_data["actor"]} do
-      {:ok, activity}
-    else
-      {:normalize, _} ->
-        {:error, "No such object found"}
-
-      {:permission, _} ->
-        {:forbidden, "You can't delete this object"}
-    end
-  end
-
-  defp fix_user_message(%User{}, activity) do
-    {:ok, activity}
-  end
-
-  def update_outbox(
-        %{assigns: %{user: %User{nickname: nickname, ap_id: actor} = user}} = conn,
-        %{"nickname" => nickname} = params
-      ) do
-    params =
-      params
-      |> Map.drop(["nickname"])
-      |> Map.put("id", Utils.generate_activity_id())
-      |> Map.put("actor", actor)
-
-    with {:ok, params} <- fix_user_message(user, params),
-         {:ok, activity, _} <- Pipeline.common_pipeline(params, local: true),
-         %Activity{data: activity_data} <- Activity.normalize(activity) do
-      conn
-      |> put_status(:created)
-      |> put_resp_header("location", activity_data["id"])
-      |> json(activity_data)
-    else
-      {:forbidden, message} ->
-        conn
-        |> put_status(:forbidden)
-        |> json(message)
-
-      {:error, message} ->
-        conn
-        |> put_status(:bad_request)
-        |> json(message)
-
-      e ->
-        Logger.warning(fn -> "AP C2S: #{inspect(e)}" end)
-
-        conn
-        |> put_status(:bad_request)
-        |> json("Bad Request")
-    end
-  end
-
-  def update_outbox(%{assigns: %{user: %User{} = user}} = conn, %{"nickname" => nickname}) do
-    err =
-      dgettext("errors", "can't update outbox of %{nickname} as %{as_nickname}",
-        nickname: nickname,
-        as_nickname: user.nickname
-      )
-
-    conn
-    |> put_status(:forbidden)
-    |> json(err)
-  end
-
   defp errors(conn, {:error, :not_found}) do
     conn
     |> put_status(:not_found)
@@ -495,21 +388,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
     conn
   end
 
-  def upload_media(%{assigns: %{user: %User{} = user}} = conn, %{"file" => file} = data) do
-    with {:ok, object} <-
-           ActivityPub.upload(
-             file,
-             actor: User.ap_id(user),
-             description: Map.get(data, "description")
-           ) do
-      Logger.debug(inspect(object))
-
-      conn
-      |> put_status(:created)
-      |> json(object.data)
-    end
-  end
-
   def pinned(conn, %{"nickname" => nickname}) do
     with %User{} = user <- User.get_cached_by_nickname(nickname) do
       conn

lib/pleroma/web/activity_pub/mrf.ex

@@ -233,7 +233,7 @@ defmodule Pleroma.Web.ActivityPub.MRF do
       if function_exported?(policy, :config_description, 0) do
         description =
           @default_description
-          |> Map.merge(policy.config_description)
+          |> Map.merge(policy.config_description())
           |> Map.put(:group, :pleroma)
           |> Map.put(:tab, :mrf)
           |> Map.put(:type, :group)

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

@@ -101,10 +101,19 @@ defmodule Pleroma.Web.ActivityPub.MRF.StealEmojiPolicy do
     end
   end
 
+  defp get_int_header(headers, header_name, default \\ nil) do
+    with rawval when rawval != :undefined <- :proplists.get_value(header_name, headers),
+         {int, ""} <- Integer.parse(rawval) do
+      int
+    else
+      _ -> default
+    end
+  end
+
   defp is_remote_size_within_limit?(url) do
     with {:ok, %{status: status, headers: headers} = _response} when status in 200..299 <-
            Pleroma.HTTP.request(:head, url, nil, [], []) do
-      content_length = :proplists.get_value("content-length", headers, nil)
+      content_length = get_int_header(headers, "content-length")
       size_limit = Config.get([:mrf_steal_emoji, :size_limit], @size_limit)
 
       accept_unknown =
@@ -172,7 +181,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.StealEmojiPolicy do
               description: <<_::272, _::_*256>>,
               key: :hosts | :rejected_shortcodes | :size_limit,
               suggestions: [any(), ...],
-              type: {:list, :string} | {:list, :string} | :integer
+              type: {:list, :string} | {:list, :string} | :integer | :boolean
             },
             ...
           ],
@@ -209,6 +218,12 @@ defmodule Pleroma.Web.ActivityPub.MRF.StealEmojiPolicy do
           type: :integer,
           description: "File size limit (in bytes), checked before an emoji is saved to the disk",
           suggestions: ["100000"]
+        },
+        %{
+          key: :download_unknown_size,
+          type: :boolean,
+          description: "Whether to download emoji if size can't be determined ahead of time",
+          suggestions: [false, true]
         }
       ]
     }

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

@@ -16,11 +16,13 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.UserValidator do
   alias Pleroma.Object.Containment
   alias Pleroma.Signature
 
+  require Pleroma.Constants
+
   @impl true
   def validate(object, meta)
 
   def validate(%{"type" => type, "id" => _id} = data, meta)
-      when type in ["Person", "Organization", "Group", "Application"] do
+      when type in Pleroma.Constants.actor_types() do
     with :ok <- validate_pubkey(data),
          :ok <- validate_inbox(data),
          :ok <- contain_collection_origin(data) do

lib/pleroma/web/activity_pub/side_effects.ex

@@ -225,9 +225,7 @@ defmodule Pleroma.Web.ActivityPub.SideEffects do
         end
       end
 
-      ConcurrentLimiter.limit(Pleroma.Web.RichMedia.Helpers, fn ->
-        Task.start(fn -> Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity) end)
-      end)
+      Pleroma.Web.RichMedia.Card.get_by_activity(activity)
 
       Pleroma.Search.add_to_index(Map.put(activity, :object, object))
 

lib/pleroma/web/activity_pub/transmogrifier.ex

@@ -58,21 +58,48 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
 
   def fix_summary(object), do: Map.put(object, "summary", "")
 
-  def fix_addressing_list(map, field) do
-    addrs = map[field]
-
+  defp fix_addressing_list(addrs) do
     cond do
-      is_list(addrs) ->
-        Map.put(map, field, Enum.filter(addrs, &is_binary/1))
-
-      is_binary(addrs) ->
-        Map.put(map, field, [addrs])
-
-      true ->
-        Map.put(map, field, [])
+      is_list(addrs) -> Enum.filter(addrs, &is_binary/1)
+      is_binary(addrs) -> [addrs]
+      true -> []
     end
   end
 
+  # Due to JSON-LD simply "Public" and "as:Public" are equivalent to the full URI
+  # but to simplify later checks we only want to deal with one reperesentation internally
+  defp normalise_addressing_public_list(map, all_fields)
+
+  defp normalise_addressing_public_list(%{} = map, [field | fields]) do
+    full_uri = Pleroma.Constants.as_public()
+
+    map =
+      if map[field] != nil do
+        new_fval =
+          map[field]
+          |> fix_addressing_list()
+          |> Enum.map(fn
+            "Public" -> full_uri
+            "as:Public" -> full_uri
+            x -> x
+          end)
+
+        Map.put(map, field, new_fval)
+      else
+        map
+      end
+
+    normalise_addressing_public_list(map, fields)
+  end
+
+  defp normalise_addressing_public_list(map, _) do
+    map
+  end
+
+  defp normalise_addressing_public(map) do
+    normalise_addressing_public_list(map, ["to", "cc", "bto", "bcc"])
+  end
+
   # if directMessage flag is set to true, leave the addressing alone
   def fix_explicit_addressing(%{"directMessage" => true} = object, _follower_collection),
     do: object
@@ -96,6 +123,10 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     |> Map.put("cc", final_cc)
   end
 
+  def fix_addressing_list_key(map, field) do
+    Map.put(map, field, fix_addressing_list(map[field]))
+  end
+
   def fix_addressing(object) do
     {:ok, %User{follower_address: follower_collection}} =
       object
@@ -103,10 +134,10 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
       |> User.get_or_fetch_by_ap_id()
 
     object
-    |> fix_addressing_list("to")
-    |> fix_addressing_list("cc")
-    |> fix_addressing_list("bto")
-    |> fix_addressing_list("bcc")
+    |> fix_addressing_list_key("to")
+    |> fix_addressing_list_key("cc")
+    |> fix_addressing_list_key("bto")
+    |> fix_addressing_list_key("bcc")
     |> fix_explicit_addressing(follower_collection)
     |> CommonFixes.fix_implicit_addressing(follower_collection)
   end
@@ -383,11 +414,28 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end)
   end
 
-  def handle_incoming(data, options \\ [])
+  def handle_incoming(data, options \\ []) do
+    data = normalise_addressing_public(data)
+
+    data =
+      if data["object"] != nil do
+        object = normalise_addressing_public(data["object"])
+        Map.put(data, "object", object)
+      else
+        data
+      end
+
+    handle_incoming_normalised(data, options)
+  end
+
+  defp handle_incoming_normalised(data, options)
 
   # Flag objects are placed ahead of the ID check because Mastodon 2.8 and earlier send them
   # with nil ID.
-  def handle_incoming(%{"type" => "Flag", "object" => objects, "actor" => actor} = data, _options) do
+  defp handle_incoming_normalised(
+         %{"type" => "Flag", "object" => objects, "actor" => actor} = data,
+         _options
+       ) do
     with context <- data["context"] || Utils.generate_context_id(),
          content <- data["content"] || "",
          %User{} = actor <- User.get_cached_by_ap_id(actor),
@@ -408,20 +456,21 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
   end
 
   # disallow objects with bogus IDs
-  def handle_incoming(%{"id" => nil}, _options), do: :error
-  def handle_incoming(%{"id" => ""}, _options), do: :error
+  defp handle_incoming_normalised(%{"id" => nil}, _options), do: :error
+  defp handle_incoming_normalised(%{"id" => ""}, _options), do: :error
   # length of https:// = 8, should validate better, but good enough for now.
-  def handle_incoming(%{"id" => id}, _options) when is_binary(id) and byte_size(id) < 8,
-    do: :error
+  defp handle_incoming_normalised(%{"id" => id}, _options)
+       when is_binary(id) and byte_size(id) < 8,
+       do: :error
 
-  @doc "Rewrite misskey likes into EmojiReacts"
-  def handle_incoming(
-        %{
-          "type" => "Like",
-          "content" => reaction
-        } = data,
-        options
-      ) do
+  # Rewrite misskey likes into EmojiReacts
+  defp handle_incoming_normalised(
+         %{
+           "type" => "Like",
+           "content" => reaction
+         } = data,
+         options
+       ) do
     if Pleroma.Emoji.is_unicode_emoji?(reaction) || Pleroma.Emoji.matches_shortcode?(reaction) do
       data
       |> Map.put("type", "EmojiReact")
@@ -433,11 +482,11 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end
   end
 
-  def handle_incoming(
-        %{"type" => "Create", "object" => %{"type" => objtype, "id" => obj_id}} = data,
-        options
-      )
-      when objtype in ~w{Question Answer Audio Video Event Article Note Page} do
+  defp handle_incoming_normalised(
+         %{"type" => "Create", "object" => %{"type" => objtype, "id" => obj_id}} = data,
+         options
+       )
+       when objtype in ~w{Question Answer Audio Video Event Article Note Page} do
     fetch_options = Keyword.put(options, :depth, (options[:depth] || 0) + 1)
 
     object =
@@ -469,8 +518,8 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end
   end
 
-  def handle_incoming(%{"type" => type} = data, _options)
-      when type in ~w{Like EmojiReact Announce Add Remove} do
+  defp handle_incoming_normalised(%{"type" => type} = data, _options)
+       when type in ~w{Like EmojiReact Announce Add Remove} do
     with :ok <- ObjectValidator.fetch_actor_and_object(data),
          {:ok, activity, _meta} <- Pipeline.common_pipeline(data, local: false) do
       {:ok, activity}
@@ -480,11 +529,11 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end
   end
 
-  def handle_incoming(
-        %{"type" => type} = data,
-        _options
-      )
-      when type in ~w{Update Block Follow Accept Reject} do
+  defp handle_incoming_normalised(
+         %{"type" => type} = data,
+         _options
+       )
+       when type in ~w{Update Block Follow Accept Reject} do
     with {:ok, %User{}} <- ObjectValidator.fetch_actor(data),
          {:ok, activity, _} <-
            Pipeline.common_pipeline(data, local: false) do
@@ -492,10 +541,10 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end
   end
 
-  def handle_incoming(
-        %{"type" => "Delete"} = data,
-        _options
-      ) do
+  defp handle_incoming_normalised(
+         %{"type" => "Delete"} = data,
+         _options
+       ) do
     with {:ok, activity, _} <-
            Pipeline.common_pipeline(data, local: false) do
       {:ok, activity}
@@ -515,15 +564,15 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end
   end
 
-  def handle_incoming(
-        %{
-          "type" => "Undo",
-          "object" => %{"type" => "Follow", "object" => followed},
-          "actor" => follower,
-          "id" => id
-        } = _data,
-        _options
-      ) do
+  defp handle_incoming_normalised(
+         %{
+           "type" => "Undo",
+           "object" => %{"type" => "Follow", "object" => followed},
+           "actor" => follower,
+           "id" => id
+         } = _data,
+         _options
+       ) do
     with %User{local: true} = followed <- User.get_cached_by_ap_id(followed),
          {:ok, %User{} = follower} <- User.get_or_fetch_by_ap_id(follower),
          {:ok, activity} <- ActivityPub.unfollow(follower, followed, id, false) do
@@ -534,28 +583,28 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end
   end
 
-  def handle_incoming(
-        %{
-          "type" => "Undo",
-          "object" => %{"type" => type}
-        } = data,
-        _options
-      )
-      when type in ["Like", "EmojiReact", "Announce", "Block"] do
+  defp handle_incoming_normalised(
+         %{
+           "type" => "Undo",
+           "object" => %{"type" => type}
+         } = data,
+         _options
+       )
+       when type in ["Like", "EmojiReact", "Announce", "Block"] do
     with {:ok, activity, _} <- Pipeline.common_pipeline(data, local: false) do
       {:ok, activity}
     end
   end
 
   # For Undos that don't have the complete object attached, try to find it in our database.
-  def handle_incoming(
-        %{
-          "type" => "Undo",
-          "object" => object
-        } = activity,
-        options
-      )
-      when is_binary(object) do
+  defp handle_incoming_normalised(
+         %{
+           "type" => "Undo",
+           "object" => object
+         } = activity,
+         options
+       )
+       when is_binary(object) do
     with %Activity{data: data} <- Activity.get_by_ap_id(object) do
       activity
       |> Map.put("object", data)
@@ -565,15 +614,15 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end
   end
 
-  def handle_incoming(
-        %{
-          "type" => "Move",
-          "actor" => origin_actor,
-          "object" => origin_actor,
-          "target" => target_actor
-        },
-        _options
-      ) do
+  defp handle_incoming_normalised(
+         %{
+           "type" => "Move",
+           "actor" => origin_actor,
+           "object" => origin_actor,
+           "target" => target_actor
+         },
+         _options
+       ) do
     with %User{} = origin_user <- User.get_cached_by_ap_id(origin_actor),
          # Use a dramatically shortened maximum age before refresh here because it is reasonable
          # for a user to
@@ -588,7 +637,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     end
   end
 
-  def handle_incoming(_, _), do: :error
+  defp handle_incoming_normalised(_, _), do: :error
 
   @spec get_obj_helper(String.t(), Keyword.t()) :: {:ok, Object.t()} | nil
   def get_obj_helper(id, options \\ []) do
@@ -985,7 +1034,7 @@ defmodule Pleroma.Web.ActivityPub.Transmogrifier do
     with %User{local: false} = user <- User.get_cached_by_ap_id(ap_id),
          {:ok, data} <- ActivityPub.fetch_and_prepare_user_from_ap_id(ap_id),
          {:ok, user} <- update_user(user, data) do
-      {:ok, _pid} = Task.start(fn -> ActivityPub.pinned_fetch_task(user) end)
+      ActivityPub.enqueue_pin_fetches(user)
       TransmogrifierWorker.enqueue("user_upgrade", %{"user_id" => user.id})
       {:ok, user}
     else

lib/pleroma/web/activity_pub/views/user_view.ex

@@ -26,8 +26,7 @@ defmodule Pleroma.Web.ActivityPub.UserView do
       "oauthAuthorizationEndpoint" => url(~p"/oauth/authorize"),
       "oauthRegistrationEndpoint" => url(~p"/api/v1/apps"),
       "oauthTokenEndpoint" => url(~p"/oauth/token"),
-      "sharedInbox" => url(~p"/inbox"),
-      "uploadMedia" => url(~p"/api/ap/upload_media")
+      "sharedInbox" => url(~p"/inbox")
     }
   end
 

lib/pleroma/web/common_api/activity_draft.ex

@@ -41,7 +41,7 @@ defmodule Pleroma.Web.CommonAPI.ActivityDraft do
             preview?: false,
             changes: %{}
 
-  def new(user, params) do
+  defp new(user, params) do
     %__MODULE__{user: user}
     |> put_params(params)
   end
@@ -92,9 +92,14 @@ defmodule Pleroma.Web.CommonAPI.ActivityDraft do
     end
   end
 
-  defp attachments(%{params: params} = draft) do
-    attachments = Utils.attachments_from_ids(params)
-    %__MODULE__{draft | attachments: attachments}
+  defp attachments(%{params: params, user: user} = draft) do
+    case Utils.attachments_from_ids(user, params) do
+      attachments when is_list(attachments) ->
+        %__MODULE__{draft | attachments: attachments}
+
+      {:error, reason} ->
+        add_error(draft, reason)
+    end
   end
 
   defp in_reply_to(%{params: %{in_reply_to_status_id: ""}} = draft), do: draft

lib/pleroma/web/common_api/utils.ex

@@ -22,43 +22,31 @@ defmodule Pleroma.Web.CommonAPI.Utils do
   require Logger
   require Pleroma.Constants
 
-  def attachments_from_ids(%{media_ids: ids, descriptions: desc}) do
-    attachments_from_ids_descs(ids, desc)
+  def attachments_from_ids(user, %{media_ids: ids}) do
+    attachments_from_ids(user, ids, [])
   end
 
-  def attachments_from_ids(%{media_ids: ids}) do
-    attachments_from_ids_no_descs(ids)
+  def attachments_from_ids(_, _), do: []
+
+  defp attachments_from_ids(_user, [], acc), do: Enum.reverse(acc)
+
+  defp attachments_from_ids(user, [media_id | ids], acc) do
+    with {_, %Object{} = object} <- {:get, get_attachment(media_id)},
+         :ok <- Object.authorize_access(object, user) do
+      attachments_from_ids(user, ids, [object.data | acc])
+    else
+      {:get, _} -> attachments_from_ids(user, ids, acc)
+      {:error, reason} -> {:error, reason}
+    end
   end
 
-  def attachments_from_ids(_), do: []
-
-  def attachments_from_ids_no_descs([]), do: []
-
-  def attachments_from_ids_no_descs(ids) do
-    Enum.map(ids, fn media_id ->
-      case get_attachment(media_id) do
-        %Object{data: data} -> data
-        _ -> nil
-      end
-    end)
-    |> Enum.reject(&is_nil/1)
-  end
-
-  def attachments_from_ids_descs([], _), do: []
-
-  def attachments_from_ids_descs(ids, descs_str) do
-    {_, descs} = Jason.decode(descs_str)
-
-    Enum.map(ids, fn media_id ->
-      with %Object{data: data} <- get_attachment(media_id) do
-        Map.put(data, "name", descs[media_id])
-      end
-    end)
-    |> Enum.reject(&is_nil/1)
-  end
-
-  defp get_attachment(media_id) do
-    Repo.get(Object, media_id)
+  def get_attachment(media_id) do
+    with %Object{} = object <- Repo.get(Object, media_id),
+         true <- object.data["type"] in Pleroma.Constants.attachment_types() do
+      object
+    else
+      _ -> nil
+    end
   end
 
   @spec get_to_and_cc(ActivityDraft.t()) :: {list(String.t()), list(String.t())}

lib/pleroma/web/feed/feed_view.ex

@@ -78,9 +78,7 @@ defmodule Pleroma.Web.Feed.FeedView do
   end
 
   def activity_content(%{"content" => content}) do
-    content
-    |> String.replace(~r/[\n\r]/, "")
-    |> escape()
+    escape(content)
   end
 
   def activity_content(_), do: ""

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

@@ -8,6 +8,7 @@ defmodule Pleroma.Web.MastodonAPI.MediaController do
   alias Pleroma.Object
   alias Pleroma.User
   alias Pleroma.Web.ActivityPub.ActivityPub
+  alias Pleroma.Web.CommonAPI.Utils
   alias Pleroma.Web.Plugs.OAuthScopesPlug
 
   action_fallback(Pleroma.Web.MastodonAPI.FallbackController)
@@ -55,12 +56,15 @@ defmodule Pleroma.Web.MastodonAPI.MediaController do
 
   @doc "PUT /api/v1/media/:id"
   def update(%{assigns: %{user: user}, body_params: %{description: description}} = conn, %{id: id}) do
-    with %Object{} = object <- Object.get_by_id(id),
+    with {_, %Object{} = object} <- {:get, Utils.get_attachment(id)},
          :ok <- Object.authorize_access(object, user),
          {:ok, %Object{data: data}} <- Object.update_data(object, %{"name" => description}) do
       attachment_data = Map.put(data, "id", object.id)
 
       render(conn, "attachment.json", %{attachment: attachment_data})
+    else
+      {:get, _} -> {:error, :not_found}
+      e -> e
     end
   end
 
@@ -68,11 +72,14 @@ defmodule Pleroma.Web.MastodonAPI.MediaController do
 
   @doc "GET /api/v1/media/:id"
   def show(%{assigns: %{user: user}} = conn, %{id: id}) do
-    with %Object{data: data, id: object_id} = object <- Object.get_by_id(id),
+    with {_, %Object{data: data, id: object_id} = object} <- {:get, Utils.get_attachment(id)},
          :ok <- Object.authorize_access(object, user) do
       attachment_data = Map.put(data, "id", object_id)
 
       render(conn, "attachment.json", %{attachment: attachment_data})
+    else
+      {:get, _} -> {:error, :not_found}
+      e -> e
     end
   end
 

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

@@ -87,7 +87,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusController do
     %{scopes: ["write:bookmarks"]} when action in [:bookmark, :unbookmark]
   )
 
-  @rate_limited_status_actions ~w(reblog unreblog favourite unfavourite create delete)a
+  @rate_limited_status_actions ~w(reblog unreblog favourite unfavourite create delete update)a
 
   plug(
     RateLimiter,

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

@@ -22,17 +22,13 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
   alias Pleroma.Web.MediaProxy
   alias Pleroma.Web.PleromaAPI.EmojiReactionController
   require Logger
+  alias Pleroma.Web.RichMedia.Card
 
   import Pleroma.Web.ActivityPub.Visibility, only: [get_visibility: 1, visible_for_user?: 2]
 
-  # This is a naive way to do this, just spawning a process per activity
-  # to fetch the preview. However it should be fine considering
-  # pagination is restricted to 40 activities at a time
   defp fetch_rich_media_for_activities(activities) do
     Enum.each(activities, fn activity ->
-      spawn(fn ->
-        Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity)
-      end)
+      Card.get_by_activity(activity)
     end)
   end
 
@@ -93,9 +89,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
     # To do: check AdminAPIControllerTest on the reasons behind nil activities in the list
     activities = Enum.filter(opts.activities, & &1)
 
-    # Start fetching rich media before doing anything else, so that later calls to get the cards
-    # only block for timeout in the worst case, as opposed to
-    # length(activities_with_links) * timeout
+    # Start prefetching rich media before doing anything else
     fetch_rich_media_for_activities(activities)
     replied_to_activities = get_replied_to_activities(activities)
 
@@ -309,6 +303,12 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
           "mastoapi:content:#{chrono_order}"
         )
 
+      card =
+        case Card.get_by_activity(activity) do
+          %Card{} = result -> render("card.json", result)
+          _ -> nil
+        end
+
       content_plaintext =
         content
         |> Activity.HTML.get_cached_stripped_html_for_activity(
@@ -318,8 +318,6 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
 
       summary = object.data["summary"] || ""
 
-      card = render("card.json", Pleroma.Web.RichMedia.Helpers.fetch_data_for_activity(activity))
-
       url =
         if user.local do
           url(~p[/notice/#{activity}])
@@ -528,37 +526,30 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
     }
   end
 
-  def render("card.json", %{rich_media: rich_media, page_url: page_url}) do
-    page_url_data = URI.parse(page_url)
-
-    page_url_data =
-      if is_binary(rich_media["url"]) do
-        URI.merge(page_url_data, URI.parse(rich_media["url"]))
-      else
-        page_url_data
-      end
+  def render("card.json", %Card{fields: rich_media}) do
+    page_url_data = URI.parse(rich_media["url"])
 
     page_url = page_url_data |> to_string
 
-    image_url_data =
-      if is_binary(rich_media["image"]) do
-        URI.parse(rich_media["image"])
-      else
-        nil
-      end
-
-    image_url = build_image_url(image_url_data, page_url_data)
+    image_url = proxied_url(rich_media["image"], page_url_data)
+    audio_url = proxied_url(rich_media["audio"], page_url_data)
+    video_url = proxied_url(rich_media["video"], page_url_data)
 
     %{
       type: "link",
       provider_name: page_url_data.host,
       provider_url: page_url_data.scheme <> "://" <> page_url_data.host,
       url: page_url,
-      image: image_url |> MediaProxy.url(),
+      image: image_url,
+      image_description: rich_media["image:alt"] || "",
       title: rich_media["title"] || "",
       description: rich_media["description"] || "",
       pleroma: %{
-        opengraph: rich_media
+        opengraph:
+          rich_media
+          |> Maps.put_if_present("image", image_url)
+          |> Maps.put_if_present("audio", audio_url)
+          |> Maps.put_if_present("video", video_url)
       }
     }
   end
@@ -636,6 +627,14 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
     }
   end
 
+  defp proxied_url(url, page_url_data) do
+    if is_binary(url) do
+      build_image_url(URI.parse(url), page_url_data) |> MediaProxy.url()
+    else
+      nil
+    end
+  end
+
   def get_reply_to(activity, %{replied_to_activities: replied_to_activities}) do
     object = Object.normalize(activity, fetch: false)
 
@@ -740,19 +739,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
 
   defp build_application(_), do: nil
 
-  # Workaround for Elixir issue #10771
-  # Avoid applying URI.merge unless necessary
-  # TODO: revert to always attempting URI.merge(image_url_data, page_url_data)
-  # when Elixir 1.12 is the minimum supported version
   @spec build_image_url(struct() | nil, struct()) :: String.t() | nil
-  defp build_image_url(
-         %URI{scheme: image_scheme, host: image_host} = image_url_data,
-         %URI{} = _page_url_data
-       )
-       when not is_nil(image_scheme) and not is_nil(image_host) do
-    image_url_data |> to_string
-  end
-
   defp build_image_url(%URI{} = image_url_data, %URI{} = page_url_data) do
     URI.merge(page_url_data, image_url_data) |> to_string
   end

lib/pleroma/web/mastodon_api/websocket_handler.ex

@@ -18,6 +18,8 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
   @timeout :timer.seconds(60)
   # Hibernate every X messages
   @hibernate_every 100
+  # Tune garabge collect for long-lived websocket process
+  @fullsweep_after 20
 
   def init(%{qs: qs} = req, state) do
     with params <- Enum.into(:cow_qs.parse_qs(qs), %{}),
@@ -59,6 +61,10 @@ defmodule Pleroma.Web.MastodonAPI.WebsocketHandler do
       "#{__MODULE__} accepted websocket connection for user #{(state.user || %{id: "anonymous"}).id}, topic #{state.topic}"
     )
 
+    # process is long-lived and can sometimes accumulate stale data in such a way it's
+    # not freed by young garbage cycles, thus make full collection sweeps more frequent
+    :erlang.process_flag(:fullsweep_after, @fullsweep_after)
+
     Streamer.add_socket(state.topic, state.oauth_token)
     {:ok, %{state | timer: timer()}}
   end

lib/pleroma/web/plugs/http_signature_plug.ex

@@ -44,6 +44,26 @@ defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do
 
   def route_aliases(_), do: []
 
+  def maybe_put_created_psudoheader(conn) do
+    case HTTPSignatures.signature_for_conn(conn) do
+      %{"created" => created} ->
+        put_req_header(conn, "(created)", created)
+
+      _ ->
+        conn
+    end
+  end
+
+  def maybe_put_expires_psudoheader(conn) do
+    case HTTPSignatures.signature_for_conn(conn) do
+      %{"expires" => expires} ->
+        put_req_header(conn, "(expires)", expires)
+
+      _ ->
+        conn
+    end
+  end
+
   defp assign_valid_signature_on_route_aliases(conn, []), do: conn
 
   defp assign_valid_signature_on_route_aliases(%{assigns: %{valid_signature: true}} = conn, _),
@@ -55,6 +75,8 @@ defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do
     conn =
       conn
       |> put_req_header("(request-target)", request_target)
+      |> maybe_put_created_psudoheader()
+      |> maybe_put_expires_psudoheader()
       |> case do
         %{assigns: %{digest: digest}} = conn -> put_req_header(conn, "digest", digest)
         conn -> conn

lib/pleroma/web/rich_media/backfill.ex

@@ -0,0 +1,98 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.RichMedia.Backfill do
+  use Pleroma.Workers.WorkerHelper,
+    queue: "rich_media_backfill",
+    unique: [period: 300, states: Oban.Job.states(), keys: [:op, :url_hash]]
+
+  alias Pleroma.Web.RichMedia.Card
+  alias Pleroma.Web.RichMedia.Parser
+  alias Pleroma.Web.RichMedia.Parser.TTL
+  alias Pleroma.Workers.RichMediaExpirationWorker
+
+  require Logger
+
+  @cachex Pleroma.Config.get([:cachex, :provider], Cachex)
+
+  def start(%{url: url} = args) when is_binary(url) do
+    url_hash = Card.url_to_hash(url)
+
+    args =
+      args
+      |> Map.put(:url_hash, url_hash)
+
+    __MODULE__.enqueue("rich_media_backfill", args)
+  end
+
+  def perform(%Oban.Job{args: %{"op" => "rich_media_backfill", "url" => url} = args})
+      when is_binary(url) do
+    run(args)
+  end
+
+  def run(%{"url" => url, "url_hash" => url_hash} = args) do
+    case Parser.parse(url) do
+      {:ok, fields} ->
+        {:ok, card} = Card.create(url, fields)
+
+        maybe_schedule_expiration(url, fields)
+
+        if Map.has_key?(args, "activity_id") do
+          stream_update(args)
+        end
+
+        warm_cache(url_hash, card)
+        :ok
+
+      {:error, {:invalid_metadata, fields}} ->
+        Logger.debug("Rich media incomplete or invalid metadata for #{url}: #{inspect(fields)}")
+        negative_cache(url_hash, :timer.minutes(30))
+
+      {:error, :body_too_large} ->
+        Logger.error("Rich media error for #{url}: :body_too_large")
+        negative_cache(url_hash, :timer.minutes(30))
+
+      {:error, {:content_type, type}} ->
+        Logger.debug("Rich media error for #{url}: :content_type is #{type}")
+        negative_cache(url_hash, :timer.minutes(30))
+
+      e ->
+        Logger.debug("Rich media error for #{url}: #{inspect(e)}")
+        {:error, e}
+    end
+  end
+
+  def run(e) do
+    Logger.error("Rich media failure - invalid args: #{inspect(e)}")
+    {:discard, :invalid}
+  end
+
+  defp maybe_schedule_expiration(url, fields) do
+    case TTL.process(fields, url) do
+      {:ok, ttl} when is_number(ttl) ->
+        timestamp = DateTime.from_unix!(ttl)
+
+        RichMediaExpirationWorker.new(%{"url" => url}, scheduled_at: timestamp)
+        |> Oban.insert()
+
+      _ ->
+        :ok
+    end
+  end
+
+  defp stream_update(%{"activity_id" => activity_id}) do
+    Logger.info("Rich media backfill: streaming update for activity #{activity_id}")
+
+    Pleroma.Activity.get_by_id(activity_id)
+    |> Pleroma.Activity.normalize()
+    |> Pleroma.Web.ActivityPub.ActivityPub.stream_out()
+  end
+
+  defp warm_cache(key, val), do: @cachex.put(:rich_media_cache, key, val)
+
+  def negative_cache(key, ttl \\ :timer.minutes(30)) do
+    @cachex.put(:rich_media_cache, key, nil, ttl: ttl)
+    {:discard, :error}
+  end
+end

lib/pleroma/web/rich_media/card.ex

@@ -0,0 +1,149 @@
+defmodule Pleroma.Web.RichMedia.Card do
+  use Ecto.Schema
+  import Ecto.Changeset
+  import Ecto.Query
+
+  alias Pleroma.Activity
+  alias Pleroma.HTML
+  alias Pleroma.Object
+  alias Pleroma.Repo
+  alias Pleroma.Web.RichMedia.Backfill
+  alias Pleroma.Web.RichMedia.Parser
+
+  @cachex Pleroma.Config.get([:cachex, :provider], Cachex)
+  @config_impl Application.compile_env(:pleroma, [__MODULE__, :config_impl], Pleroma.Config)
+
+  @type t :: %__MODULE__{}
+
+  schema "rich_media_card" do
+    field(:url_hash, :binary)
+    field(:fields, :map)
+
+    timestamps()
+  end
+
+  @doc false
+  def changeset(card, attrs) do
+    card
+    |> cast(attrs, [:url_hash, :fields])
+    |> validate_required([:url_hash, :fields])
+    |> unique_constraint(:url_hash)
+  end
+
+  @spec create(String.t(), map()) :: {:ok, t()}
+  def create(url, fields) do
+    url_hash = url_to_hash(url)
+
+    fields = Map.put_new(fields, "url", url)
+
+    %__MODULE__{}
+    |> changeset(%{url_hash: url_hash, fields: fields})
+    |> Repo.insert(on_conflict: {:replace, [:fields]}, conflict_target: :url_hash)
+  end
+
+  @spec delete(String.t()) :: {:ok, Ecto.Schema.t()} | {:error, Ecto.Changeset.t()} | :ok
+  def delete(url) do
+    url_hash = url_to_hash(url)
+    @cachex.del(:rich_media_cache, url_hash)
+
+    case get_by_url(url) do
+      %__MODULE__{} = card -> Repo.delete(card)
+      nil -> :ok
+    end
+  end
+
+  @spec get_by_url(String.t() | nil) :: t() | nil | :error
+  def get_by_url(url) when is_binary(url) do
+    if @config_impl.get([:rich_media, :enabled]) do
+      url_hash = url_to_hash(url)
+
+      @cachex.fetch!(:rich_media_cache, url_hash, fn _ ->
+        result =
+          __MODULE__
+          |> where(url_hash: ^url_hash)
+          |> Repo.one()
+
+        case result do
+          %__MODULE__{} = card -> {:commit, card}
+          _ -> {:ignore, nil}
+        end
+      end)
+    else
+      :error
+    end
+  end
+
+  def get_by_url(nil), do: nil
+
+  @spec get_or_backfill_by_url(String.t(), map()) :: t() | nil
+  def get_or_backfill_by_url(url, backfill_opts \\ %{}) do
+    case get_by_url(url) do
+      %__MODULE__{} = card ->
+        card
+
+      nil ->
+        backfill_opts = Map.put(backfill_opts, :url, url)
+
+        Backfill.start(backfill_opts)
+
+        nil
+
+      :error ->
+        nil
+    end
+  end
+
+  @spec get_by_activity(Activity.t()) :: t() | nil | :error
+  # Fake/Draft activity
+  def get_by_activity(%Activity{id: "pleroma:fakeid"} = activity) do
+    with %Object{} = object <- Object.normalize(activity, fetch: false),
+         url when not is_nil(url) <- HTML.extract_first_external_url_from_object(object) do
+      case get_by_url(url) do
+        # Cache hit
+        %__MODULE__{} = card ->
+          card
+
+        # Cache miss, but fetch for rendering the Draft
+        _ ->
+          with {:ok, fields} <- Parser.parse(url),
+               {:ok, card} <- create(url, fields) do
+            card
+          else
+            _ -> nil
+          end
+      end
+    else
+      _ ->
+        nil
+    end
+  end
+
+  def get_by_activity(activity) do
+    with %Object{} = object <- Object.normalize(activity, fetch: false),
+         {_, nil} <- {:cached, get_cached_url(object, activity.id)} do
+      nil
+    else
+      {:cached, url} ->
+        get_or_backfill_by_url(url, %{activity_id: activity.id})
+
+      _ ->
+        :error
+    end
+  end
+
+  @spec url_to_hash(String.t()) :: String.t()
+  def url_to_hash(url) do
+    :crypto.hash(:sha256, url) |> Base.encode16(case: :lower)
+  end
+
+  defp get_cached_url(object, activity_id) do
+    key = "URL|#{activity_id}"
+
+    @cachex.fetch!(:scrubber_cache, key, fn _ ->
+      url = HTML.extract_first_external_url_from_object(object)
+      Activity.HTML.add_cache_key_for(activity_id, key)
+
+      {:commit, url}
+    end)
+  end
+end

lib/pleroma/web/rich_media/helpers.ex

@@ -3,85 +3,13 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.RichMedia.Helpers do
-  alias Pleroma.Activity
   alias Pleroma.Config
-  alias Pleroma.HTML
-  alias Pleroma.Object
-  alias Pleroma.Web.RichMedia.Parser
-
-  @options [
-    max_body: 2_000_000,
-    receive_timeout: 2_000
-  ]
-
-  @spec validate_page_url(URI.t() | binary()) :: :ok | :error
-  defp validate_page_url(page_url) when is_binary(page_url) do
-    validate_tld = Config.get([Pleroma.Formatter, :validate_tld])
-
-    page_url
-    |> Linkify.Parser.url?(validate_tld: validate_tld)
-    |> parse_uri(page_url)
-  end
-
-  defp validate_page_url(%URI{host: host, scheme: "https", authority: authority})
-       when is_binary(authority) do
-    cond do
-      host in Config.get([:rich_media, :ignore_hosts], []) ->
-        :error
-
-      get_tld(host) in Config.get([:rich_media, :ignore_tld], []) ->
-        :error
-
-      true ->
-        :ok
-    end
-  end
-
-  defp validate_page_url(_), do: :error
-
-  defp parse_uri(true, url) do
-    url
-    |> URI.parse()
-    |> validate_page_url
-  end
-
-  defp parse_uri(_, _), do: :error
-
-  defp get_tld(host) do
-    host
-    |> String.split(".")
-    |> Enum.reverse()
-    |> hd
-  end
-
-  def fetch_data_for_object(object) do
-    with true <- Config.get([:rich_media, :enabled]),
-         {:ok, page_url} <-
-           HTML.extract_first_external_url_from_object(object),
-         :ok <- validate_page_url(page_url),
-         {:ok, rich_media} <- Parser.parse(page_url) do
-      %{page_url: page_url, rich_media: rich_media}
-    else
-      _ -> %{}
-    end
-  end
-
-  def fetch_data_for_activity(%Activity{data: %{"type" => "Create"}} = activity) do
-    with true <- Config.get([:rich_media, :enabled]),
-         %Object{} = object <- Object.normalize(activity, fetch: false) do
-      fetch_data_for_object(object)
-    else
-      _ -> %{}
-    end
-  end
-
-  def fetch_data_for_activity(_), do: %{}
 
   def rich_media_get(url) do
     headers = [{"user-agent", Pleroma.Application.user_agent() <> "; Bot"}]
 
     head_check =
-      case Pleroma.HTTP.head(url, headers, @options) do
+      case Pleroma.HTTP.head(url, headers, http_options()) do
         # If the HEAD request didn't reach the server for whatever reason,
         # we assume the GET that comes right after won't either
         {:error, _} = e ->
@@ -96,7 +24,7 @@ defmodule Pleroma.Web.RichMedia.Helpers do
           :ok
       end
 
-    with :ok <- head_check, do: Pleroma.HTTP.get(url, headers, @options)
+    with :ok <- head_check, do: Pleroma.HTTP.get(url, headers, http_options())
   end
 
   defp check_content_type(headers) do
@@ -112,12 +40,13 @@ defmodule Pleroma.Web.RichMedia.Helpers do
     end
   end
 
-  @max_body @options[:max_body]
   defp check_content_length(headers) do
+    max_body = Keyword.get(http_options(), :max_body)
+
     case List.keyfind(headers, "content-length", 0) do
       {_, maybe_content_length} ->
         case Integer.parse(maybe_content_length) do
-          {content_length, ""} when content_length <= @max_body -> :ok
+          {content_length, ""} when content_length <= max_body -> :ok
           {_, ""} -> {:error, :body_too_large}
           _ -> :ok
         end
@@ -126,4 +55,11 @@ defmodule Pleroma.Web.RichMedia.Helpers do
         :ok
     end
   end
+
+  defp http_options do
+    [
+      pool: :media,
+      max_body: Config.get([:rich_media, :max_body], 5_000_000)
+    ]
+  end
 end

lib/pleroma/web/rich_media/parser.ex

@@ -1,161 +1,41 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.RichMedia.Parser do
   require Logger
 
-  @cachex Pleroma.Config.get([:cachex, :provider], Cachex)
+  @config_impl Application.compile_env(:pleroma, [__MODULE__, :config_impl], Pleroma.Config)
 
   defp parsers do
     Pleroma.Config.get([:rich_media, :parsers])
   end
 
-  def parse(nil), do: {:error, "No URL provided"}
+  def parse(nil), do: nil
 
-  if Pleroma.Config.get(:env) == :test do
-    @spec parse(String.t()) :: {:ok, map()} | {:error, any()}
-    def parse(url), do: parse_with_timeout(url)
-  else
-    @spec parse(String.t()) :: {:ok, map()} | {:error, any()}
-    def parse(url) do
-      with {:ok, data} <- get_cached_or_parse(url),
-           {:ok, _} <- set_ttl_based_on_image(data, url) do
-        {:ok, data}
-      end
-    end
-
-    defp get_cached_or_parse(url) do
-      case @cachex.fetch(:rich_media_cache, url, fn ->
-             case parse_with_timeout(url) do
-               {:ok, _} = res ->
-                 {:commit, res}
-
-               {:error, reason} = e ->
-                 # Unfortunately we have to log errors here, instead of doing that
-                 # along with ttl setting at the bottom. Otherwise we can get log spam
-                 # if more than one process was waiting for the rich media card
-                 # while it was generated. Ideally we would set ttl here as well,
-                 # so we don't override it number_of_waiters_on_generation
-                 # times, but one, obviously, can't set ttl for not-yet-created entry
-                 # and Cachex doesn't support returning ttl from the fetch callback.
-                 log_error(url, reason)
-                 {:commit, e}
-             end
-           end) do
-        {action, res} when action in [:commit, :ok] ->
-          case res do
-            {:ok, _data} = res ->
-              res
-
-            {:error, reason} = e ->
-              if action == :commit, do: set_error_ttl(url, reason)
-              e
-          end
-
-        {:error, e} ->
-          {:error, {:cachex_error, e}}
-      end
-    end
-
-    defp set_error_ttl(_url, :body_too_large), do: :ok
-    defp set_error_ttl(_url, {:content_type, _}), do: :ok
-
-    # The TTL is not set for the errors above, since they are unlikely to change
-    # with time
-
-    defp set_error_ttl(url, _reason) do
-      ttl = Pleroma.Config.get([:rich_media, :failure_backoff], 60_000)
-      @cachex.expire(:rich_media_cache, url, ttl)
-      :ok
-    end
-
-    defp log_error(url, {:invalid_metadata, data}) do
-      Logger.debug(fn -> "Incomplete or invalid metadata for #{url}: #{inspect(data)}" end)
-    end
-
-    defp log_error(url, reason) do
-      Logger.warning(fn -> "Rich media error for #{url}: #{inspect(reason)}" end)
+  @spec parse(String.t()) :: {:ok, map()} | {:error, any()}
+  def parse(url) do
+    with {_, true} <- {:config, @config_impl.get([:rich_media, :enabled])},
+         :ok <- validate_page_url(url),
+         {:ok, data} <- parse_url(url) do
+      data = Map.put(data, "url", url)
+      {:ok, data}
+    else
+      {:config, _} -> {:error, :rich_media_disabled}
+      e -> e
     end
   end
 
-  @doc """
-  Set the rich media cache based on the expiration time of image.
-
-  Adopt behaviour `Pleroma.Web.RichMedia.Parser.TTL`
-
-  ## Example
-
-      defmodule MyModule do
-        @behaviour Pleroma.Web.RichMedia.Parser.TTL
-        def ttl(data, url) do
-          image_url = Map.get(data, :image)
-          # do some parsing in the url and get the ttl of the image
-          # and return ttl is unix time
-          parse_ttl_from_url(image_url)
-        end
-      end
-
-  Define the module in the config
-
-      config :pleroma, :rich_media,
-        ttl_setters: [MyModule]
-  """
-  @spec set_ttl_based_on_image(map(), String.t()) ::
-          {:ok, Integer.t() | :noop} | {:error, :no_key}
-  def set_ttl_based_on_image(data, url) do
-    case get_ttl_from_image(data, url) do
-      {:ok, ttl} when is_number(ttl) ->
-        ttl = ttl * 1000
-
-        case @cachex.expire_at(:rich_media_cache, url, ttl) do
-          {:ok, true} -> {:ok, ttl}
-          {:ok, false} -> {:error, :no_key}
-        end
-
-      _ ->
-        {:ok, :noop}
-    end
-  end
-
-  defp get_ttl_from_image(data, url) do
-    [:rich_media, :ttl_setters]
-    |> Pleroma.Config.get()
-    |> Enum.reduce({:ok, nil}, fn
-      module, {:ok, _ttl} ->
-        module.ttl(data, url)
-
-      _, error ->
-        error
-    end)
-  end
-
-  def parse_url(url) do
+  defp parse_url(url) do
     with {:ok, %Tesla.Env{body: html}} <- Pleroma.Web.RichMedia.Helpers.rich_media_get(url),
          {:ok, html} <- Floki.parse_document(html) do
       html
       |> maybe_parse()
-      |> Map.put("url", url)
       |> clean_parsed_data()
       |> check_parsed_data()
     end
   end
 
-  def parse_with_timeout(url) do
-    try do
-      task =
-        Task.Supervisor.async_nolink(Pleroma.TaskSupervisor, fn ->
-          parse_url(url)
-        end)
-
-      Task.await(task, 5000)
-    catch
-      :exit, {:timeout, _} ->
-        Logger.warning("Timeout while fetching rich media for #{url}")
-        {:error, :timeout}
-    end
-  end
-
   defp maybe_parse(html) do
     Enum.reduce_while(parsers(), %{}, fn parser, acc ->
       case parser.parse(html, acc) do
@@ -181,4 +61,46 @@ defmodule Pleroma.Web.RichMedia.Parser do
     end)
     |> Map.new()
   end
+
+  @spec validate_page_url(URI.t() | binary()) :: :ok | :error
+  defp validate_page_url(page_url) when is_binary(page_url) do
+    validate_tld = @config_impl.get([Pleroma.Formatter, :validate_tld])
+
+    page_url
+    |> Linkify.Parser.url?(validate_tld: validate_tld)
+    |> parse_uri(page_url)
+  end
+
+  defp validate_page_url(%URI{host: host, scheme: "https"}) do
+    cond do
+      Linkify.Parser.ip?(host) ->
+        :error
+
+      host in @config_impl.get([:rich_media, :ignore_hosts], []) ->
+        :error
+
+      get_tld(host) in @config_impl.get([:rich_media, :ignore_tld], []) ->
+        :error
+
+      true ->
+        :ok
+    end
+  end
+
+  defp validate_page_url(_), do: :error
+
+  defp parse_uri(true, url) do
+    url
+    |> URI.parse()
+    |> validate_page_url
+  end
+
+  defp parse_uri(_, _), do: :error
+
+  defp get_tld(host) do
+    host
+    |> String.split(".")
+    |> Enum.reverse()
+    |> hd
+  end
 end

lib/pleroma/web/rich_media/parser/ttl.ex

@@ -3,5 +3,18 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.RichMedia.Parser.TTL do
-  @callback ttl(Map.t(), String.t()) :: Integer.t() | nil
+  @callback ttl(map(), String.t()) :: integer() | nil
+
+  @spec process(map(), String.t()) :: {:ok, integer() | nil}
+  def process(data, url) do
+    [:rich_media, :ttl_setters]
+    |> Pleroma.Config.get()
+    |> Enum.reduce_while({:ok, nil}, fn
+      module, acc ->
+        case module.ttl(data, url) do
+          ttl when is_number(ttl) -> {:halt, {:ok, ttl}}
+          _ -> {:cont, acc}
+        end
+    end)
+  end
 end

lib/pleroma/web/rich_media/parser/ttl/aws_signed_url.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.RichMedia.Parser.TTL.AwsSignedUrl do
@@ -7,25 +7,26 @@ defmodule Pleroma.Web.RichMedia.Parser.TTL.AwsSignedUrl do
 
   @impl true
   def ttl(data, _url) do
-    image = Map.get(data, :image)
+    image = Map.get(data, "image")
 
-    if is_aws_signed_url(image) do
+    if aws_signed_url?(image) do
       image
       |> parse_query_params()
       |> format_query_params()
       |> get_expiration_timestamp()
     else
-      {:error, "Not aws signed url #{inspect(image)}"}
+      nil
     end
   end
 
-  defp is_aws_signed_url(image) when is_binary(image) and image != "" do
+  defp aws_signed_url?(image) when is_binary(image) and image != "" do
     %URI{host: host, query: query} = URI.parse(image)
 
-    String.contains?(host, "amazonaws.com") and String.contains?(query, "X-Amz-Expires")
+    is_binary(host) and String.contains?(host, "amazonaws.com") and
+      is_binary(query) and String.contains?(query, "X-Amz-Expires")
   end
 
-  defp is_aws_signed_url(_), do: nil
+  defp aws_signed_url?(_), do: nil
 
   defp parse_query_params(image) do
     %URI{query: query} = URI.parse(image)
@@ -45,6 +46,6 @@ defmodule Pleroma.Web.RichMedia.Parser.TTL.AwsSignedUrl do
       |> Map.get("X-Amz-Date")
       |> Timex.parse("{ISO:Basic:Z}")
 
-    {:ok, Timex.to_unix(date) + String.to_integer(Map.get(params, "X-Amz-Expires"))}
+    Timex.to_unix(date) + String.to_integer(Map.get(params, "X-Amz-Expires"))
   end
 end

lib/pleroma/web/rich_media/parser/ttl/opengraph.ex

@@ -0,0 +1,20 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Web.RichMedia.Parser.TTL.Opengraph do
+  @behaviour Pleroma.Web.RichMedia.Parser.TTL
+
+  @impl true
+  def ttl(%{"ttl" => ttl_string}, _url) when is_binary(ttl_string) do
+    try do
+      ttl = String.to_integer(ttl_string)
+      now = DateTime.utc_now() |> DateTime.to_unix()
+      now + ttl
+    rescue
+      _ -> nil
+    end
+  end
+
+  def ttl(_, _), do: nil
+end

lib/pleroma/web/rich_media/parsers/o_embed.ex

@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2022 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.RichMedia.Parsers.OEmbed do

lib/pleroma/web/router.ex

@@ -800,13 +800,9 @@ defmodule Pleroma.Web.Router do
   scope "/", Pleroma.Web.ActivityPub do
     pipe_through([:activitypub_client])
 
-    get("/api/ap/whoami", ActivityPubController, :whoami)
     get("/users/:nickname/inbox", ActivityPubController, :read_inbox)
 
     get("/users/:nickname/outbox", ActivityPubController, :outbox)
-    post("/users/:nickname/outbox", ActivityPubController, :update_outbox)
-    post("/api/ap/upload_media", ActivityPubController, :upload_media)
-
     get("/users/:nickname/collections/featured", ActivityPubController, :pinned)
   end
 

lib/pleroma/web/telemetry.ex

@@ -151,41 +151,40 @@ defmodule Pleroma.Web.Telemetry do
     #   phoenix.router_dispatch.stop.duration
     #   pleroma.repo.query.total_time
     #   pleroma.repo.query.queue_time
-    dist_metrics =
-      [
-        distribution("phoenix.endpoint.stop.duration.fdist",
-          event_name: [:phoenix, :endpoint, :stop],
-          measurement: :duration,
-          unit: {:native, :millisecond},
-          reporter_options: [
-            buckets: simple_buckets
-          ]
-        ),
-        distribution("pleroma.repo.query.decode_time.fdist",
-          event_name: [:pleroma, :repo, :query],
-          measurement: :decode_time,
-          unit: {:native, :millisecond},
-          reporter_options: [
-            buckets: simple_buckets_quick
-          ]
-        ),
-        distribution("pleroma.repo.query.query_time.fdist",
-          event_name: [:pleroma, :repo, :query],
-          measurement: :query_time,
-          unit: {:native, :millisecond},
-          reporter_options: [
-            buckets: simple_buckets
-          ]
-        ),
-        distribution("pleroma.repo.query.idle_time.fdist",
-          event_name: [:pleroma, :repo, :query],
-          measurement: :idle_time,
-          unit: {:native, :millisecond},
-          reporter_options: [
-            buckets: simple_buckets
-          ]
-        )
-      ]
+    dist_metrics = [
+      distribution("phoenix.endpoint.stop.duration.fdist",
+        event_name: [:phoenix, :endpoint, :stop],
+        measurement: :duration,
+        unit: {:native, :millisecond},
+        reporter_options: [
+          buckets: simple_buckets
+        ]
+      ),
+      distribution("pleroma.repo.query.decode_time.fdist",
+        event_name: [:pleroma, :repo, :query],
+        measurement: :decode_time,
+        unit: {:native, :millisecond},
+        reporter_options: [
+          buckets: simple_buckets_quick
+        ]
+      ),
+      distribution("pleroma.repo.query.query_time.fdist",
+        event_name: [:pleroma, :repo, :query],
+        measurement: :query_time,
+        unit: {:native, :millisecond},
+        reporter_options: [
+          buckets: simple_buckets
+        ]
+      ),
+      distribution("pleroma.repo.query.idle_time.fdist",
+        event_name: [:pleroma, :repo, :query],
+        measurement: :idle_time,
+        unit: {:native, :millisecond},
+        reporter_options: [
+          buckets: simple_buckets
+        ]
+      )
+    ]
 
     vm_metrics =
       sum_counter_pair("vm.memory.total",

lib/pleroma/web/templates/feed/feed/tag.atom.eex

@@ -9,13 +9,13 @@
       xmlns:ostatus="http://ostatus.org/schema/1.0"
       xmlns:statusnet="http://status.net/schema/api/1/">
 
-    <id><%= '#{url(~p"/tags/#{@tag}")}.rss' %></id>
+    <id><%= "#{url(~p"/tags/#{@tag}")}.rss" %></id>
     <title>#<%= @tag %></title>
 
     <subtitle><%= Gettext.dpgettext("static_pages", "tag feed description", "These are public toots tagged with #%{tag}. You can interact with them if you have an account anywhere in the fediverse.", tag: @tag) %></subtitle>
     <logo><%= feed_logo() %></logo>
     <updated><%= most_recent_update(@activities) %></updated>
-    <link rel="self" href="<%= '#{url(~p"/tags/#{@tag}")}.atom'  %>" type="application/atom+xml"/>
+    <link rel="self" href="<%= "#{url(~p"/tags/#{@tag}")}.atom"  %>" type="application/atom+xml"/>
     <%= for activity <- @activities do %>
     <%= render @view_module, "_tag_activity.atom", Map.merge(assigns, prepare_activity(activity, actor: true)) %>
     <% end %>

lib/pleroma/web/templates/feed/feed/tag.rss.eex

@@ -5,7 +5,7 @@
 
     <title>#<%= @tag %></title>
     <description><%= Gettext.dpgettext("static_pages", "tag feed description", "These are public toots tagged with #%{tag}. You can interact with them if you have an account anywhere in the fediverse.", tag: @tag) %></description>
-    <link><%= '#{url(~p"/tags/#{@tag}")}.rss' %></link>
+    <link><%= "#{url(~p"/tags/#{@tag}")}.rss" %></link>
     <webfeeds:logo><%= feed_logo() %></webfeeds:logo>
     <webfeeds:accentColor>2b90d9</webfeeds:accentColor>
     <%= for activity <- @activities do %>

lib/pleroma/web/templates/feed/feed/user.atom.eex

@@ -10,12 +10,12 @@
   <title><%= @user.nickname <> "'s timeline" %></title>
   <updated><%= most_recent_update(@activities, @user) %></updated>
   <logo><%= logo(@user) %></logo>
-  <link rel="self" href="<%= '#{url(~p"/users/#{@user.nickname}/feed")}.atom' %>" type="application/atom+xml"/>
+  <link rel="self" href="<%= "#{url(~p"/users/#{@user.nickname}/feed")}.atom" %>" type="application/atom+xml"/>
 
   <%= render @view_module, "_author.atom", assigns %>
 
   <%= if last_activity(@activities) do %>
-    <link rel="next" href="<%= '#{url(~p"/users/#{@user.nickname}/feed")}.atom?max_id=#{last_activity(@activities).id}' %>" type="application/atom+xml"/>
+    <link rel="next" href="<%= "#{url(~p"/users/#{@user.nickname}/feed")}.atom?max_id=#{last_activity(@activities).id}" %>" type="application/atom+xml"/>
   <% end %>
 
   <%= for activity <- @activities do %>