akkoma/lib/pleroma/web/ostatus/ostatus.ex

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Elixir
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defmodule Pleroma.Web.OStatus do
import Ecto.Query
require Logger
alias Pleroma.{Repo, User, Web}
alias Pleroma.Web.ActivityPub.ActivityPub
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def feed_path(user) do
"#{user.ap_id}/feed.atom"
end
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def pubsub_path(user) do
"#{Web.base_url}/push/hub/#{user.nickname}"
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end
def salmon_path(user) do
"#{user.ap_id}/salmon"
end
def handle_incoming(xml_string) do
{doc, _rest} = :xmerl_scan.string(to_charlist(xml_string))
{:xmlObj, :string, object_type } = :xmerl_xpath.string('string(/entry/activity:object-type[1])', doc)
case object_type do
'http://activitystrea.ms/schema/1.0/note' ->
handle_note(doc)
_ ->
Logger.error("Couldn't parse incoming document")
end
end
# TODO
# wire up replies
def handle_note(doc) do
content_html = string_from_xpath("/entry/content[1]", doc)
[author] = :xmerl_xpath.string('/entry/author[1]', doc)
{:ok, actor} = find_or_make_user(author)
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context = string_from_xpath("/entry/ostatus:conversation[1]", doc) |> String.trim
context = if String.length(context) > 0 do
context
else
ActivityPub.generate_context_id
end
to = [
"https://www.w3.org/ns/activitystreams#Public"
]
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mentions = :xmerl_xpath.string('/entry/link[@rel="mentioned" and @ostatus:object-type="http://activitystrea.ms/schema/1.0/person"]', doc)
|> Enum.map(fn(person) -> string_from_xpath("@href", person) end)
to = to ++ mentions
date = string_from_xpath("/entry/published", doc)
object = %{
"type" => "Note",
"to" => to,
"content" => content_html,
"published" => date,
"context" => context,
"actor" => actor.ap_id
}
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inReplyTo = string_from_xpath("/entry/thr:in-reply-to[1]/@href", doc)
object = if inReplyTo do
Map.put(object, "inReplyTo", inReplyTo)
else
object
end
ActivityPub.create(to, actor, context, object, %{}, date)
end
def find_or_make_user(author_doc) do
{:xmlObj, :string, uri } = :xmerl_xpath.string('string(/author[1]/uri)', author_doc)
query = from user in User,
where: user.local == false and fragment("? @> ?", user.info, ^%{ostatus_uri: to_string(uri)})
user = Repo.one(query)
if is_nil(user) do
make_user(author_doc)
else
{:ok, user}
end
end
defp string_from_xpath(xpath, doc) do
{:xmlObj, :string, res} = :xmerl_xpath.string('string(#{xpath})', doc)
res = res
|> to_string
|> String.trim
if res == "", do: nil, else: res
end
def make_user(author_doc) do
author = string_from_xpath("/author[1]/uri", author_doc)
name = string_from_xpath("/author[1]/name", author_doc)
preferredUsername = string_from_xpath("/author[1]/poco:preferredUsername", author_doc)
displayName = string_from_xpath("/author[1]/poco:displayName", author_doc)
avatar = make_avatar_object(author_doc)
data = %{
local: false,
name: preferredUsername || name,
nickname: displayName || name,
ap_id: author,
info: %{
"ostatus_uri" => author,
"host" => URI.parse(author).host,
"system" => "ostatus"
},
avatar: avatar
}
Repo.insert(Ecto.Changeset.change(%User{}, data))
end
# TODO: Just takes the first one for now.
defp 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
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end
end