commit: 9a2523a09a2d9ccf5db12ef648444c51a98ab113
parent 714bf0cb2332050a3a64c6197dae729cf7de1b95
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date: Mon, 6 Mar 2023 21:16:34 +0100
instances: Store some metadata based on NodeInfo
Diffstat:
7 files changed, 181 insertions(+), 1 deletion(-)
diff --git a/lib/pleroma/instances/instance.ex b/lib/pleroma/instances/instance.ex
@@ -7,6 +7,7 @@ defmodule Pleroma.Instances.Instance do
alias Pleroma.Instances
alias Pleroma.Instances.Instance
+ alias Pleroma.Maps
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Workers.BackgroundWorker
@@ -24,6 +25,14 @@ defmodule Pleroma.Instances.Instance do
field(:favicon, :string)
field(:favicon_updated_at, :naive_datetime)
+ embeds_one :metadata, Pleroma.Instances.Metadata, primary_key: false do
+ field(:software_name, :string)
+ field(:software_version, :string)
+ field(:software_repository, :string)
+ end
+
+ field(:metadata_updated_at, :utc_datetime)
+
timestamps()
end
@@ -31,11 +40,17 @@ defmodule Pleroma.Instances.Instance do
def changeset(struct, params \\ %{}) do
struct
- |> cast(params, [:host, :unreachable_since, :favicon, :favicon_updated_at])
+ |> cast(params, __schema__(:fields) -- [:metadata])
+ |> cast_embed(:metadata, with: &metadata_changeset/2)
|> validate_required([:host])
|> unique_constraint(:host)
end
+ def metadata_changeset(struct, params \\ %{}) do
+ struct
+ |> cast(params, [:software_name, :software_version, :software_repository])
+ end
+
def filter_reachable([]), do: %{}
def filter_reachable(urls_or_hosts) when is_list(urls_or_hosts) do
@@ -198,6 +213,89 @@ defmodule Pleroma.Instances.Instance do
end
end
+ def get_or_update_metadata(%URI{host: host} = instance_uri) do
+ existing_record = Repo.get_by(Instance, %{host: host})
+ now = NaiveDateTime.utc_now()
+
+ if existing_record && existing_record.metadata_updated_at &&
+ NaiveDateTime.diff(now, existing_record.metadata_updated_at) < 86_400 do
+ existing_record.metadata
+ else
+ metadata = scrape_metadata(instance_uri)
+
+ if existing_record do
+ existing_record
+ |> changeset(%{metadata: metadata, metadata_updated_at: now})
+ |> Repo.update()
+ else
+ %Instance{}
+ |> changeset(%{host: host, metadata: metadata, metadata_updated_at: now})
+ |> Repo.insert()
+ end
+
+ metadata
+ end
+ end
+
+ defp get_nodeinfo_uri(well_known) do
+ links = Map.get(well_known, "links", [])
+
+ nodeinfo21 =
+ Enum.find(links, &(&1["rel"] == "http://nodeinfo.diaspora.software/ns/schema/2.1"))["href"]
+
+ nodeinfo20 =
+ Enum.find(links, &(&1["rel"] == "http://nodeinfo.diaspora.software/ns/schema/2.0"))["href"]
+
+ cond do
+ is_binary(nodeinfo21) -> {:ok, nodeinfo21}
+ is_binary(nodeinfo20) -> {:ok, nodeinfo20}
+ true -> {:error, :no_links}
+ end
+ end
+
+ defp scrape_metadata(%URI{} = instance_uri) do
+ try do
+ with {_, true} <- {:reachable, reachable?(instance_uri.host)},
+ {:ok, %Tesla.Env{body: well_known_body}} <-
+ instance_uri
+ |> URI.merge("/.well-known/nodeinfo")
+ |> to_string()
+ |> Pleroma.HTTP.get([{"accept", "application/json"}]),
+ {:ok, well_known_json} <- Jason.decode(well_known_body),
+ {:ok, nodeinfo_uri} <- get_nodeinfo_uri(well_known_json),
+ {:ok, %Tesla.Env{body: nodeinfo_body}} <-
+ Pleroma.HTTP.get(nodeinfo_uri, [{"accept", "application/json"}]),
+ {:ok, nodeinfo} <- Jason.decode(nodeinfo_body) do
+ # Can extract more metadata from NodeInfo but need to be careful about it's size,
+ # can't just dump the entire thing
+ software = Map.get(nodeinfo, "software", %{})
+
+ %{
+ software_name: software["name"],
+ software_version: software["version"]
+ }
+ |> Maps.put_if_present(:software_repository, software["repository"])
+ else
+ {:reachable, false} ->
+ Logger.debug(
+ "Instance.scrape_metadata(\"#{to_string(instance_uri)}\") ignored unreachable host"
+ )
+
+ nil
+
+ _ ->
+ nil
+ end
+ rescue
+ e ->
+ Logger.warn(
+ "Instance.scrape_metadata(\"#{to_string(instance_uri)}\") error: #{inspect(e)}"
+ )
+
+ nil
+ end
+ end
+
@doc """
Deletes all users from an instance in a background task, thus also deleting
all of those users' activities and notifications.
diff --git a/priv/repo/migrations/20230306112859_instances_add_metadata.exs b/priv/repo/migrations/20230306112859_instances_add_metadata.exs
@@ -0,0 +1,14 @@
+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2023 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.Repo.Migrations.InstancesAddMetadata do
+ use Ecto.Migration
+
+ def change do
+ alter table(:instances) do
+ add(:metadata, :map)
+ add(:metadata_updated_at, :utc_datetime)
+ end
+ end
+end
diff --git a/test/fixtures/mastodon-nodeinfo20.json b/test/fixtures/mastodon-nodeinfo20.json
@@ -0,0 +1 @@
+{"version":"2.0","software":{"name":"mastodon","version":"4.1.0"},"protocols":["activitypub"],"services":{"outbound":[],"inbound":[]},"usage":{"users":{"total":971090,"activeMonth":167218,"activeHalfyear":384808},"localPosts":52071541},"openRegistrations":true,"metadata":{}}
+\ No newline at end of file
diff --git a/test/fixtures/mastodon-well-known-nodeinfo.json b/test/fixtures/mastodon-well-known-nodeinfo.json
@@ -0,0 +1 @@
+{"links":[{"rel":"http://nodeinfo.diaspora.software/ns/schema/2.0","href":"https://mastodon.example.org/nodeinfo/2.0"}]}
+\ No newline at end of file
diff --git a/test/fixtures/wildebeest-nodeinfo21.json b/test/fixtures/wildebeest-nodeinfo21.json
@@ -0,0 +1 @@
+{"version":"2.1","software":{"name":"wildebeest","version":"0.0.1","repository":"https://github.com/cloudflare/wildebeest"},"protocols":["activitypub"],"usage":{"users":{"total":1,"activeMonth":1,"activeHalfyear":1}},"openRegistrations":false,"metadata":{"upstream":{"name":"mastodon","version":"3.5.1"}}}
+\ No newline at end of file
diff --git a/test/fixtures/wildebeest-well-known-nodeinfo.json b/test/fixtures/wildebeest-well-known-nodeinfo.json
@@ -0,0 +1 @@
+{"links":[{"rel":"http://nodeinfo.diaspora.software/ns/schema/2.0","href":"https://wildebeest.example.org/nodeinfo/2.0"},{"rel":"http://nodeinfo.diaspora.software/ns/schema/2.1","href":"https://wildebeest.example.org/nodeinfo/2.1"}]}
+\ No newline at end of file
diff --git a/test/pleroma/instances/instance_test.exs b/test/pleroma/instances/instance_test.exs
@@ -161,6 +161,66 @@ defmodule Pleroma.Instances.InstanceTest do
end
end
+ describe "get_or_update_metadata/1" do
+ test "Scrapes Wildebeest NodeInfo" do
+ Tesla.Mock.mock(fn
+ %{url: "https://wildebeest.example.org/.well-known/nodeinfo"} ->
+ %Tesla.Env{
+ status: 200,
+ body: File.read!("test/fixtures/wildebeest-well-known-nodeinfo.json")
+ }
+
+ %{url: "https://wildebeest.example.org/nodeinfo/2.1"} ->
+ %Tesla.Env{
+ status: 200,
+ body: File.read!("test/fixtures/wildebeest-nodeinfo21.json")
+ }
+ end)
+
+ expected = %{
+ software_name: "wildebeest",
+ software_repository: "https://github.com/cloudflare/wildebeest",
+ software_version: "0.0.1"
+ }
+
+ assert expected ==
+ Instance.get_or_update_metadata(URI.parse("https://wildebeest.example.org/"))
+
+ expected = %Pleroma.Instances.Instance.Pleroma.Instances.Metadata{
+ software_name: "wildebeest",
+ software_repository: "https://github.com/cloudflare/wildebeest",
+ software_version: "0.0.1"
+ }
+
+ assert expected ==
+ Repo.get_by(Pleroma.Instances.Instance, %{host: "wildebeest.example.org"}).metadata
+ end
+
+ test "Scrapes Mastodon NodeInfo" do
+ Tesla.Mock.mock(fn
+ %{url: "https://mastodon.example.org/.well-known/nodeinfo"} ->
+ %Tesla.Env{
+ status: 200,
+ body: File.read!("test/fixtures/mastodon-well-known-nodeinfo.json")
+ }
+
+ %{url: "https://mastodon.example.org/nodeinfo/2.0"} ->
+ %Tesla.Env{
+ status: 200,
+ body: File.read!("test/fixtures/mastodon-nodeinfo20.json")
+ }
+ end)
+
+ expected = %{
+ software_name: "mastodon",
+ software_version: "4.1.0"
+ }
+
+ assert expected ==
+ Instance.get_or_update_metadata(URI.parse("https://mastodon.example.org/"))
+ end
+ end
+
test "delete_users_and_activities/1 deletes remote instance users and activities" do
[mario, luigi, _peach, wario] =
users = [
