alias Pleroma.Instances
alias Pleroma.Instances.Instance
+ alias Pleroma.Maps
alias Pleroma.Repo
alias Pleroma.User
alias Pleroma.Workers.BackgroundWorker
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
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
def reachable?(url_or_host) when is_binary(url_or_host), do: true
def set_reachable(url_or_host) when is_binary(url_or_host) do
- with host <- host(url_or_host),
- %Instance{} = existing_record <- Repo.get_by(Instance, %{host: host}) do
- {:ok, _instance} =
- existing_record
- |> changeset(%{unreachable_since: nil})
- |> Repo.update()
- end
+ %Instance{host: host(url_or_host)}
+ |> changeset(%{unreachable_since: nil})
+ |> Repo.insert(on_conflict: {:replace, [:unreachable_since]}, conflict_target: :host)
end
def set_reachable(_), do: {:error, nil}
end
rescue
e ->
- Logger.warn("Instance.get_or_update_favicon(\"#{host}\") error: #{inspect(e)}")
+ Logger.warning("Instance.get_or_update_favicon(\"#{host}\") error: #{inspect(e)}")
nil
end
end
rescue
e ->
- Logger.warn(
+ Logger.warning(
"Instance.scrape_favicon(\"#{to_string(instance_uri)}\") error: #{inspect(e)}"
)
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.warning(
+ "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.