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diff --git a/lib/pleroma/web/ostatus/ostatus.ex b/lib/pleroma/web/ostatus/ostatus.ex
index 2a107b6a6..e4448eb73 100644
--- a/lib/pleroma/web/ostatus/ostatus.ex
+++ b/lib/pleroma/web/ostatus/ostatus.ex
@@ -1,283 +1,283 @@
defmodule Pleroma.Web.OStatus do
@httpoison Application.get_env(:pleroma, :httpoison)
import Ecto.Query
import Pleroma.Web.XML
require Logger
alias Pleroma.{Repo, User, Web, Object, Activity}
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.{WebFinger, Websub}
def feed_path(user) do
"#{user.ap_id}/feed.atom"
end
def pubsub_path(user) do
"#{Web.base_url}/push/hub/#{user.nickname}"
end
def salmon_path(user) do
"#{user.ap_id}/salmon"
end
def handle_incoming(xml_string) do
doc = parse_document(xml_string)
entries = :xmerl_xpath.string('//entry', doc)
activities = Enum.map(entries, fn (entry) ->
{:xmlObj, :string, object_type} = :xmerl_xpath.string('string(/entry/activity:object-type[1])', entry)
{:xmlObj, :string, verb} = :xmerl_xpath.string('string(/entry/activity:verb[1])', entry)
case verb do
'http://activitystrea.ms/schema/1.0/share' ->
with {:ok, activity, retweeted_activity} <- handle_share(entry, doc), do: [activity, retweeted_activity]
'http://activitystrea.ms/schema/1.0/favorite' ->
with {:ok, activity, favorited_activity} <- handle_favorite(entry, doc), do: [activity, favorited_activity]
_ ->
case object_type do
'http://activitystrea.ms/schema/1.0/note' ->
with {:ok, activity} <- handle_note(entry, doc), do: activity
'http://activitystrea.ms/schema/1.0/comment' ->
with {:ok, activity} <- handle_note(entry, doc), do: activity
_ ->
Logger.error("Couldn't parse incoming document")
nil
end
end
end)
{:ok, activities}
end
def make_share(_entry, doc, retweeted_activity) do
with {:ok, actor} <- find_make_or_update_user(doc),
%Object{} = object <- Object.get_cached_by_ap_id(retweeted_activity.data["object"]["id"]),
{:ok, activity, _object} = ActivityPub.announce(actor, object, false) do
{:ok, activity}
end
end
def handle_share(entry, doc) do
with [object] <- :xmerl_xpath.string('/entry/activity:object', entry),
{:ok, retweeted_activity} <- handle_note(object, object),
{:ok, activity} <- make_share(entry, doc, retweeted_activity) do
{:ok, activity, retweeted_activity}
else
e -> {:error, e}
end
end
def make_favorite(_entry, doc, favorited_activity) do
with {:ok, actor} <- find_make_or_update_user(doc),
%Object{} = object <- Object.get_cached_by_ap_id(favorited_activity.data["object"]["id"]),
{:ok, activity, _object} = ActivityPub.like(actor, object, false) do
{:ok, activity}
end
end
def get_or_try_fetching(entry) do
with id when not is_nil(id) <- string_from_xpath("//activity:object[1]/id", entry),
%Activity{} = activity <- Activity.get_create_activity_by_object_ap_id(id) do
{:ok, activity}
else _e ->
with href when not is_nil(href) <- string_from_xpath("//activity:object[1]/link[@type=\"text/html\"]/@href", entry),
{:ok, [favorited_activity]} <- fetch_activity_from_html_url(href) do
{:ok, favorited_activity}
end
end
end
def handle_favorite(entry, doc) do
with {:ok, favorited_activity} <- get_or_try_fetching(entry),
{:ok, activity} <- make_favorite(entry, doc, favorited_activity) do
{:ok, activity, favorited_activity}
else
e -> {:error, e}
end
end
def get_attachments(entry) do
:xmerl_xpath.string('/entry/link[@rel="enclosure"]', entry)
|> Enum.map(fn (enclosure) ->
with href when not is_nil(href) <- string_from_xpath("/link/@href", enclosure),
type when not is_nil(type) <- string_from_xpath("/link/@type", enclosure) do
%{
"type" => "Attachment",
"url" => [%{
"type" => "Link",
"mediaType" => type,
"href" => href
}]
}
end
end)
|> Enum.filter(&(&1))
end
def handle_note(entry, doc \\ nil) do
content_html = string_from_xpath("//content[1]", entry)
[author] = :xmerl_xpath.string('//author[1]', doc)
{:ok, actor} = find_make_or_update_user(author)
inReplyTo = string_from_xpath("//thr:in-reply-to[1]/@ref", entry)
if !Object.get_cached_by_ap_id(inReplyTo) do
inReplyToHref = string_from_xpath("//thr:in-reply-to[1]/@href", entry)
if inReplyToHref do
- Task.start(fn -> fetch_activity_from_html_url(inReplyToHref) end)
+ fetch_activity_from_html_url(inReplyToHref)
end
end
context = (string_from_xpath("//ostatus:conversation[1]", entry) || "") |> String.trim
attachments = get_attachments(entry)
context = with %{data: %{"context" => context}} <- Object.get_cached_by_ap_id(inReplyTo) do
context
else _e ->
if String.length(context) > 0 do
context
else
ActivityPub.generate_context_id
end
end
to = [
"https://www.w3.org/ns/activitystreams#Public"
]
mentions = :xmerl_xpath.string('//link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/person"]', entry)
|> Enum.map(fn(person) -> string_from_xpath("@href", person) end)
to = to ++ mentions
date = string_from_xpath("//published", entry)
id = string_from_xpath("//id", entry)
object = %{
"id" => id,
"type" => "Note",
"to" => to,
"content" => content_html,
"published" => date,
"context" => context,
"actor" => actor.ap_id,
"attachment" => attachments
}
object = if inReplyTo do
Map.put(object, "inReplyTo", inReplyTo)
else
object
end
# TODO: Bail out sooner and use transaction.
if Object.get_by_ap_id(id) do
{:error, "duplicate activity"}
else
ActivityPub.create(to, actor, context, object, %{}, date, false)
end
end
def find_make_or_update_user(doc) do
uri = string_from_xpath("//author/uri[1]", doc)
with {:ok, user} <- find_or_make_user(uri) do
avatar = make_avatar_object(doc)
if user.avatar != avatar do
change = Ecto.Changeset.change(user, %{avatar: avatar})
Repo.update(change)
else
{:ok, user}
end
end
end
def find_or_make_user(uri) do
query = from user in User,
where: user.local == false and fragment("? @> ?", user.info, ^%{uri: uri})
user = Repo.one(query)
if is_nil(user) do
make_user(uri)
else
{:ok, user}
end
end
def make_user(uri) do
with {:ok, info} <- gather_user_info(uri) do
data = %{
local: false,
name: info["name"],
nickname: info["nickname"] <> "@" <> info["host"],
ap_id: info["uri"],
info: info,
avatar: info["avatar"]
}
# TODO: Make remote user changeset
# SHould enforce fqn nickname
Repo.insert(Ecto.Changeset.change(%User{}, data))
end
end
# TODO: Just takes the first one for now.
def make_avatar_object(author_doc) do
href = string_from_xpath("//author[1]/link[@rel=\"avatar\"]/@href", author_doc)
type = string_from_xpath("//author[1]/link[@rel=\"avatar\"]/@type", author_doc)
if href do
%{
"type" => "Image",
"url" =>
[%{
"type" => "Link",
"mediaType" => type,
"href" => href
}]
}
else
nil
end
end
def gather_user_info(username) do
with {:ok, webfinger_data} <- WebFinger.finger(username),
{:ok, feed_data} <- Websub.gather_feed_data(webfinger_data["topic"]) do
{:ok, Map.merge(webfinger_data, feed_data) |> Map.put("fqn", username)}
else e ->
Logger.debug(fn -> "Couldn't gather info for #{username}" end)
{:error, e}
end
end
# Regex-based 'parsing' so we don't have to pull in a full html parser
# It's a hack anyway. Maybe revisit this in the future
@mastodon_regex ~r/<link href='(.*)' rel='alternate' type='application\/atom\+xml'>/
@gs_regex ~r/<link title=.* href="(.*)" type="application\/atom\+xml" rel="alternate">/
@gs_classic_regex ~r/<link rel="alternate" href="(.*)" type="application\/atom\+xml" title=.*>/
def get_atom_url(body) do
cond do
Regex.match?(@mastodon_regex, body) ->
[[_, match]] = Regex.scan(@mastodon_regex, body)
{:ok, match}
Regex.match?(@gs_regex, body) ->
[[_, match]] = Regex.scan(@gs_regex, body)
{:ok, match}
Regex.match?(@gs_classic_regex, body) ->
[[_, match]] = Regex.scan(@gs_classic_regex, body)
{:ok, match}
true ->
Logger.debug(fn -> "Couldn't find atom link in #{inspect(body)}" end)
{:error, "Couldn't find the atom link"}
end
end
def fetch_activity_from_html_url(url) do
with {:ok, %{body: body}} <- @httpoison.get(url),
{:ok, atom_url} <- get_atom_url(body),
{:ok, %{status_code: code, body: body}} when code in 200..299 <- @httpoison.get(atom_url) do
handle_incoming(body)
end
end
end

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