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-rw-r--r--lib/pleroma/web/activity_pub/activity_pub.ex170
-rw-r--r--lib/pleroma/web/activity_pub/activity_pub_controller.ex43
-rw-r--r--lib/pleroma/web/activity_pub/transmogrifier.ex183
-rw-r--r--lib/pleroma/web/activity_pub/utils.ex1
-rw-r--r--lib/pleroma/web/activity_pub/views/object_view.ex27
-rw-r--r--lib/pleroma/web/activity_pub/views/user_view.ex51
6 files changed, 459 insertions, 16 deletions
diff --git a/lib/pleroma/web/activity_pub/activity_pub.ex b/lib/pleroma/web/activity_pub/activity_pub.ex
index 421fd5cd7..554d3a008 100644
--- a/lib/pleroma/web/activity_pub/activity_pub.ex
+++ b/lib/pleroma/web/activity_pub/activity_pub.ex
@@ -1,14 +1,24 @@
defmodule Pleroma.Web.ActivityPub.ActivityPub do
alias Pleroma.{Activity, Repo, Object, Upload, User, Notification}
+ alias Pleroma.Web.ActivityPub.Transmogrifier
+ alias Pleroma.Web.WebFinger
+ alias Pleroma.Web.Federator
+ alias Pleroma.Web.OStatus
import Ecto.Query
import Pleroma.Web.ActivityPub.Utils
require Logger
+ @httpoison Application.get_env(:pleroma, :httpoison)
+
+ def get_recipients(data) do
+ (data["to"] || []) ++ (data["cc"] || [])
+ end
+
def insert(map, local \\ true) when is_map(map) do
with nil <- Activity.get_by_ap_id(map["id"]),
map <- lazy_put_activity_defaults(map),
:ok <- insert_full_object(map) do
- {:ok, activity} = Repo.insert(%Activity{data: map, local: local, actor: map["actor"]})
+ {:ok, activity} = Repo.insert(%Activity{data: map, local: local, actor: map["actor"], recipients: get_recipients(map)})
Notification.create_notifications(activity)
stream_out(activity)
{:ok, activity}
@@ -30,7 +40,11 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
end
end
- def create(to, actor, context, object, additional \\ %{}, published \\ nil, local \\ true) do
+ def create(%{to: to, actor: actor, context: context, object: object} = params) do
+ additional = params[:additional] || %{}
+ local = !(params[:local] == false) # only accept false as false value
+ published = params[:published]
+
with create_data <- make_create_data(%{to: to, actor: actor, published: published, context: context, object: object}, additional),
{:ok, activity} <- insert(create_data, local),
:ok <- maybe_federate(activity) do
@@ -38,6 +52,16 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
end
end
+ def accept(%{to: to, actor: actor, object: object} = params) do
+ local = !(params[:local] == false) # only accept false as false value
+
+ with data <- %{"to" => to, "type" => "Accept", "actor" => actor, "object" => object},
+ {:ok, activity} <- insert(data, local),
+ :ok <- maybe_federate(activity) do
+ {:ok, activity}
+ end
+ end
+
# TODO: This is weird, maybe we shouldn't check here if we can make the activity.
def like(%User{ap_id: ap_id} = user, %Object{data: %{"id" => _}} = object, activity_id \\ nil, local \\ true) do
with nil <- get_existing_like(ap_id, object),
@@ -62,7 +86,8 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
end
def announce(%User{ap_id: _} = user, %Object{data: %{"id" => _}} = object, activity_id \\ nil, local \\ true) do
- with announce_data <- make_announce_data(user, object, activity_id),
+ with true <- is_public?(object),
+ announce_data <- make_announce_data(user, object, activity_id),
{:ok, activity} <- insert(announce_data, local),
{:ok, object} <- add_announce_to_object(activity, object),
:ok <- maybe_federate(activity) do
@@ -106,16 +131,28 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
end
def fetch_activities_for_context(context, opts \\ %{}) do
- query = from activity in Activity,
+ public = ["https://www.w3.org/ns/activitystreams#Public"]
+ recipients = if opts["user"], do: [opts["user"].ap_id | opts["user"].following] ++ public, else: public
+
+ query = from activity in Activity
+ query = query
+ |> restrict_blocked(opts)
+ |> restrict_recipients(recipients, opts["user"])
+
+ query = from activity in query,
where: fragment("?->>'type' = ? and ?->>'context' = ?", activity.data, "Create", activity.data, ^context),
order_by: [desc: :id]
- query = restrict_blocked(query, opts)
Repo.all(query)
end
def fetch_public_activities(opts \\ %{}) do
- public = ["https://www.w3.org/ns/activitystreams#Public"]
- fetch_activities(public, opts)
+ public = %{to: ["https://www.w3.org/ns/activitystreams#Public"]}
+ q = fetch_activities_query([], opts)
+ q = from activity in q,
+ where: fragment(~s(? @> ?), activity.data, ^public)
+ q
+ |> Repo.all
+ |> Enum.reverse
end
defp restrict_since(query, %{"since_id" => since_id}) do
@@ -129,12 +166,15 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
end
defp restrict_tag(query, _), do: query
- defp restrict_recipients(query, recipients) do
- Enum.reduce(recipients, query, fn (recipient, q) ->
- map = %{ to: [recipient] }
- from activity in q,
- or_where: fragment(~s(? @> ?), activity.data, ^map)
- end)
+ defp restrict_recipients(query, [], user), do: query
+ defp restrict_recipients(query, recipients, nil) do
+ from activity in query,
+ where: fragment("? && ?", ^recipients, activity.recipients)
+ end
+ defp restrict_recipients(query, recipients, user) do
+ from activity in query,
+ where: fragment("? && ?", ^recipients, activity.recipients),
+ or_where: activity.actor == ^user.ap_id
end
defp restrict_local(query, %{"local_only" => true}) do
@@ -190,13 +230,13 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
end
defp restrict_blocked(query, _), do: query
- def fetch_activities(recipients, opts \\ %{}) do
+ def fetch_activities_query(recipients, opts \\ %{}) do
base_query = from activity in Activity,
limit: 20,
order_by: [fragment("? desc nulls last", activity.id)]
base_query
- |> restrict_recipients(recipients)
+ |> restrict_recipients(recipients, opts["user"])
|> restrict_tag(opts)
|> restrict_since(opts)
|> restrict_local(opts)
@@ -207,6 +247,10 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
|> restrict_recent(opts)
|> restrict_blocked(opts)
|> restrict_media(opts)
+ end
+
+ def fetch_activities(recipients, opts \\ %{}) do
+ fetch_activities_query(recipients, opts)
|> Repo.all
|> Enum.reverse
end
@@ -215,4 +259,100 @@ defmodule Pleroma.Web.ActivityPub.ActivityPub do
data = Upload.store(file)
Repo.insert(%Object{data: data})
end
+
+ def make_user_from_ap_id(ap_id) do
+ with {:ok, %{status_code: 200, body: body}} <- @httpoison.get(ap_id, ["Accept": "application/activity+json"]),
+ {:ok, data} <- Poison.decode(body)
+ do
+ user_data = %{
+ ap_id: data["id"],
+ info: %{
+ "ap_enabled" => true,
+ "source_data" => data
+ },
+ nickname: "#{data["preferredUsername"]}@#{URI.parse(ap_id).host}",
+ name: data["name"]
+ }
+
+ if user = User.get_by_ap_id(ap_id) do
+ User.info_changeset(user, user_data)
+ |> Repo.update
+ else
+ User.insert_or_update_user(user_data)
+ end
+ end
+ end
+
+ def make_user_from_nickname(nickname) do
+ with {:ok, %{"ap_id" => ap_id}} when not is_nil(ap_id) <- WebFinger.finger(nickname) do
+ make_user_from_ap_id(ap_id)
+ end
+ end
+
+ def publish(actor, activity) do
+ followers = if actor.follower_address in activity.recipients do
+ {:ok, followers} = User.get_followers(actor)
+ followers
+ else
+ []
+ end
+
+ remote_inboxes = (Pleroma.Web.Salmon.remote_users(activity) ++ followers)
+ |> Enum.filter(fn (user) -> User.ap_enabled?(user) end)
+ |> Enum.map(fn (%{info: %{"source_data" => data}}) ->
+ (data["endpoints"] && data["endpoints"]["sharedInbox"]) || data["inbox"]
+ end)
+ |> Enum.uniq
+
+ {:ok, data} = Transmogrifier.prepare_outgoing(activity.data)
+ json = Poison.encode!(data)
+ Enum.each remote_inboxes, fn(inbox) ->
+ Federator.enqueue(:publish_single_ap, %{inbox: inbox, json: json, actor: actor, id: activity.data["id"]})
+ end
+ end
+
+ def publish_one(%{inbox: inbox, json: json, actor: actor, id: id}) do
+ Logger.info("Federating #{id} to #{inbox}")
+ host = URI.parse(inbox).host
+ signature = Pleroma.Web.HTTPSignatures.sign(actor, %{host: host, "content-length": byte_size(json)})
+ @httpoison.post(inbox, json, [{"Content-Type", "application/activity+json"}, {"signature", signature}])
+ end
+
+ # TODO:
+ # This will create a Create activity, which we need internally at the moment.
+ def fetch_object_from_id(id) do
+ if object = Object.get_cached_by_ap_id(id) do
+ {:ok, object}
+ else
+ Logger.info("Fetching #{id} via AP")
+ with {:ok, %{body: body, status_code: code}} when code in 200..299 <- @httpoison.get(id, [Accept: "application/activity+json"], follow_redirect: true, timeout: 10000, recv_timeout: 20000),
+ {:ok, data} <- Poison.decode(body),
+ nil <- Object.get_by_ap_id(data["id"]),
+ params <- %{"type" => "Create", "to" => data["to"], "cc" => data["cc"], "actor" => data["attributedTo"], "object" => data},
+ {:ok, activity} <- Transmogrifier.handle_incoming(params) do
+ {:ok, Object.get_by_ap_id(activity.data["object"]["id"])}
+ else
+ object = %Object{} -> {:ok, object}
+ e ->
+ Logger.info("Couldn't get object via AP, trying out OStatus fetching...")
+ case OStatus.fetch_activity_from_url(id) do
+ {:ok, [activity | _]} -> {:ok, Object.get_by_ap_id(activity.data["object"]["id"])}
+ _ -> e
+ end
+ end
+ end
+ end
+
+ def is_public?(activity) do
+ "https://www.w3.org/ns/activitystreams#Public" in (activity.data["to"] ++ (activity.data["cc"] || []))
+ end
+
+ def visible_for_user?(activity, nil) do
+ is_public?(activity)
+ end
+ def visible_for_user?(activity, user) do
+ x = [user.ap_id | user.following]
+ y = (activity.data["to"] ++ (activity.data["cc"] || []))
+ visible_for_user?(activity, nil) || Enum.any?(x, &(&1 in y))
+ end
end
diff --git a/lib/pleroma/web/activity_pub/activity_pub_controller.ex b/lib/pleroma/web/activity_pub/activity_pub_controller.ex
new file mode 100644
index 000000000..f0dc86a7f
--- /dev/null
+++ b/lib/pleroma/web/activity_pub/activity_pub_controller.ex
@@ -0,0 +1,43 @@
+defmodule Pleroma.Web.ActivityPub.ActivityPubController do
+ use Pleroma.Web, :controller
+ alias Pleroma.{User, Repo, Object, Activity}
+ alias Pleroma.Web.ActivityPub.{ObjectView, UserView, Transmogrifier}
+ alias Pleroma.Web.ActivityPub.ActivityPub
+ alias Pleroma.Web.Federator
+
+ require Logger
+
+ action_fallback :errors
+
+ def user(conn, %{"nickname" => nickname}) do
+ with %User{} = user <- User.get_cached_by_nickname(nickname),
+ {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
+ json(conn, UserView.render("user.json", %{user: user}))
+ end
+ end
+
+ def object(conn, %{"uuid" => uuid}) do
+ with ap_id <- o_status_url(conn, :object, uuid),
+ %Object{} = object <- Object.get_cached_by_ap_id(ap_id) do
+ json(conn, ObjectView.render("object.json", %{object: object}))
+ end
+ end
+
+ # TODO: Ensure that this inbox is a recipient of the message
+ def inbox(%{assigns: %{valid_signature: true}} = conn, params) do
+ Federator.enqueue(:incoming_ap_doc, params)
+ json(conn, "ok")
+ end
+
+ def inbox(conn, params) do
+ Logger.info("Signature error.")
+ Logger.info(inspect(conn.req_headers))
+ json(conn, "ok")
+ end
+
+ def errors(conn, _e) do
+ conn
+ |> put_status(500)
+ |> json("error")
+ end
+end
diff --git a/lib/pleroma/web/activity_pub/transmogrifier.ex b/lib/pleroma/web/activity_pub/transmogrifier.ex
new file mode 100644
index 000000000..eb2569ef2
--- /dev/null
+++ b/lib/pleroma/web/activity_pub/transmogrifier.ex
@@ -0,0 +1,183 @@
+defmodule Pleroma.Web.ActivityPub.Transmogrifier do
+ @moduledoc """
+ A module to handle coding from internal to wire ActivityPub and back.
+ """
+ alias Pleroma.User
+ alias Pleroma.Object
+ alias Pleroma.Activity
+ alias Pleroma.Web.ActivityPub.ActivityPub
+
+ @doc """
+ Modifies an incoming AP object (mastodon format) to our internal format.
+ """
+ def fix_object(object) do
+ object
+ |> Map.put("actor", object["attributedTo"])
+ |> fix_attachments
+ |> fix_context
+ end
+
+ def fix_context(object) do
+ object
+ |> Map.put("context", object["conversation"])
+ end
+
+ def fix_attachments(object) do
+ attachments = (object["attachment"] || [])
+ |> Enum.map(fn (data) ->
+ url = [%{"type" => "Link", "mediaType" => data["mediaType"], "href" => data["url"]}]
+ Map.put(data, "url", url)
+ end)
+
+ object
+ |> Map.put("attachment", attachments)
+ end
+
+ # TODO: validate those with a Ecto scheme
+ # - tags
+ # - emoji
+ def handle_incoming(%{"type" => "Create", "object" => %{"type" => "Note"} = object} = data) do
+ with nil <- Activity.get_create_activity_by_object_ap_id(object["id"]),
+ %User{} = user <- User.get_or_fetch_by_ap_id(data["actor"]) do
+ object = fix_object(data["object"])
+ params = %{
+ to: data["to"],
+ object: object,
+ actor: user,
+ context: data["object"]["conversation"],
+ local: false,
+ published: data["published"],
+ additional: Map.take(data, [
+ "cc",
+ "id"
+ ])
+ }
+
+ if object["inReplyTo"] do
+ {:ok, object} = ActivityPub.fetch_object_from_id(object["inReplyTo"])
+ end
+
+ ActivityPub.create(params)
+ else
+ %Activity{} = activity -> {:ok, activity}
+ _e -> :error
+ end
+ end
+
+ def handle_incoming(%{"type" => "Follow", "object" => followed, "actor" => follower, "id" => id} = data) do
+ with %User{local: true} = followed <- User.get_cached_by_ap_id(followed),
+ %User{} = follower <- User.get_or_fetch_by_ap_id(follower),
+ {:ok, activity} <- ActivityPub.follow(follower, followed, id, false) do
+ ActivityPub.accept(%{to: [follower.ap_id], actor: followed.ap_id, object: data, local: true})
+ User.follow(follower, followed)
+ {:ok, activity}
+ else
+ _e -> :error
+ end
+ end
+
+ def handle_incoming(%{"type" => "Like", "object" => object_id, "actor" => actor, "id" => id} = data) do
+ with %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
+ %Object{} = object <- Object.get_by_ap_id(object_id),
+ {:ok, activity, object} <- ActivityPub.like(actor, object, id, false) do
+ {:ok, activity}
+ else
+ _e -> :error
+ end
+ end
+
+ def handle_incoming(%{"type" => "Announce", "object" => object_id, "actor" => actor, "id" => id} = data) do
+ with %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
+ {:ok, object} <- get_obj_helper(object_id) || ActivityPub.fetch_object_from_id(object_id),
+ {:ok, activity, object} <- ActivityPub.announce(actor, object, id, false) do
+ {:ok, activity}
+ else
+ _e -> :error
+ end
+ end
+
+ # TODO
+ # Accept
+ # Undo
+
+ def handle_incoming(_), do: :error
+
+ def get_obj_helper(id) do
+ if object = Object.get_by_ap_id(id), do: {:ok, object}, else: nil
+ end
+
+ @doc
+ """
+ internal -> Mastodon
+ """
+ def prepare_outgoing(%{"type" => "Create", "object" => %{"type" => "Note"} = object} = data) do
+ object = object
+ |> set_sensitive
+ |> add_hashtags
+ |> add_mention_tags
+ |> add_attributed_to
+ |> prepare_attachments
+ |> set_conversation
+
+ data = data
+ |> Map.put("object", object)
+ |> Map.put("@context", "https://www.w3.org/ns/activitystreams")
+
+ {:ok, data}
+ end
+
+ def prepare_outgoing(%{"type" => type} = data) do
+ data = data
+ |> Map.put("@context", "https://www.w3.org/ns/activitystreams")
+
+ {:ok, data}
+ end
+
+ def add_hashtags(object) do
+ tags = (object["tag"] || [])
+ |> Enum.map fn (tag) -> %{"href" => Pleroma.Web.Endpoint.url() <> "/tags/#{tag}", "name" => "##{tag}", "type" => "Hashtag"} end
+
+ object
+ |> Map.put("tag", tags)
+ end
+
+ def add_mention_tags(object) do
+ recipients = object["to"] ++ (object["cc"] || [])
+ mentions = recipients
+ |> Enum.map(fn (ap_id) -> User.get_cached_by_ap_id(ap_id) end)
+ |> Enum.filter(&(&1))
+ |> Enum.map(fn(user) -> %{"type" => "Mention", "href" => user.ap_id, "name" => "@#{user.nickname}"} end)
+
+ tags = object["tag"] || []
+
+ object
+ |> Map.put("tag", tags ++ mentions)
+ end
+
+ def set_conversation(object) do
+ Map.put(object, "conversation", object["context"])
+ end
+
+ def set_sensitive(object) do
+ tags = object["tag"] || []
+ Map.put(object, "sensitive", "nsfw" in tags)
+ end
+
+ def add_attributed_to(object) do
+ attributedTo = object["attributedTo"] || object["actor"]
+
+ object
+ |> Map.put("attributedTo", attributedTo)
+ end
+
+ def prepare_attachments(object) do
+ attachments = (object["attachment"] || [])
+ |> Enum.map(fn (data) ->
+ [%{"mediaType" => media_type, "href" => href} | _] = data["url"]
+ %{"url" => href, "mediaType" => media_type, "name" => data["name"], "type" => "Document"}
+ end)
+
+ object
+ |> Map.put("attachment", attachments)
+ end
+end
diff --git a/lib/pleroma/web/activity_pub/utils.ex b/lib/pleroma/web/activity_pub/utils.ex
index ac20a2822..b32b7240e 100644
--- a/lib/pleroma/web/activity_pub/utils.ex
+++ b/lib/pleroma/web/activity_pub/utils.ex
@@ -205,7 +205,6 @@ defmodule Pleroma.Web.ActivityPub.Utils do
def make_create_data(params, additional) do
published = params.published || make_date()
-
%{
"type" => "Create",
"to" => params.to |> Enum.uniq,
diff --git a/lib/pleroma/web/activity_pub/views/object_view.ex b/lib/pleroma/web/activity_pub/views/object_view.ex
new file mode 100644
index 000000000..c39f99454
--- /dev/null
+++ b/lib/pleroma/web/activity_pub/views/object_view.ex
@@ -0,0 +1,27 @@
+defmodule Pleroma.Web.ActivityPub.ObjectView do
+ use Pleroma.Web, :view
+
+ def render("object.json", %{object: object}) do
+ base = %{
+ "@context" => [
+ "https://www.w3.org/ns/activitystreams",
+ "https://w3id.org/security/v1",
+ %{
+ "manuallyApprovesFollowers" => "as:manuallyApprovesFollowers",
+ "sensitive" => "as:sensitive",
+ "Hashtag" => "as:Hashtag",
+ "ostatus" => "http://ostatus.org#",
+ "atomUri" => "ostatus:atomUri",
+ "inReplyToAtomUri" => "ostatus:inReplyToAtomUri",
+ "conversation" => "ostatus:conversation",
+ "toot" => "http://joinmastodon.org/ns#",
+ "Emoji" => "toot:Emoji"
+ }
+ ]
+ }
+
+ additional = Map.take(object.data, ["id", "to", "cc", "actor", "content", "summary", "type"])
+ |> Map.put("attributedTo", object.data["actor"])
+ Map.merge(base, additional)
+ end
+end
diff --git a/lib/pleroma/web/activity_pub/views/user_view.ex b/lib/pleroma/web/activity_pub/views/user_view.ex
new file mode 100644
index 000000000..b3b02c4fb
--- /dev/null
+++ b/lib/pleroma/web/activity_pub/views/user_view.ex
@@ -0,0 +1,51 @@
+defmodule Pleroma.Web.ActivityPub.UserView do
+ use Pleroma.Web, :view
+ alias Pleroma.Web.Salmon
+ alias Pleroma.User
+
+ def render("user.json", %{user: user}) do
+ {:ok, _, public_key} = Salmon.keys_from_pem(user.info["keys"])
+ public_key = :public_key.pem_entry_encode(:RSAPublicKey, public_key)
+ public_key = :public_key.pem_encode([public_key])
+ %{
+ "@context" => [
+ "https://www.w3.org/ns/activitystreams",
+ "https://w3id.org/security/v1",
+ %{
+ "manuallyApprovesFollowers" => "as:manuallyApprovesFollowers",
+ "sensitive" => "as:sensitive",
+ "Hashtag" => "as:Hashtag",
+ "ostatus" => "http://ostatus.org#",
+ "atomUri" => "ostatus:atomUri",
+ "inReplyToAtomUri" => "ostatus:inReplyToAtomUri",
+ "conversation" => "ostatus:conversation",
+ "toot" => "http://joinmastodon.org/ns#",
+ "Emoji" => "toot:Emoji"
+ }
+ ],
+ "id" => user.ap_id,
+ "type" => "Person",
+ "following" => "#{user.ap_id}/following",
+ "followers" => "#{user.ap_id}/followers",
+ "inbox" => "#{user.ap_id}/inbox",
+ "outbox" => "#{user.ap_id}/outbox",
+ "preferredUsername" => user.nickname,
+ "name" => user.name,
+ "summary" => user.bio,
+ "url" => user.ap_id,
+ "manuallyApprovesFollowers" => false,
+ "publicKey" => %{
+ "id" => "#{user.ap_id}#main-key",
+ "owner" => user.ap_id,
+ "publicKeyPem" => public_key
+ },
+ "endpoints" => %{
+ "sharedInbox" => "#{Pleroma.Web.Endpoint.url}/inbox"
+ },
+ "icon" => %{
+ "type" => "Image",
+ "url" => User.avatar_url(user)
+ }
+ }
+ end
+end
generated by cgit v1.2.3 (git 2.25.1) at 2025-05-30 14:58:26 +0000