1 files changed, 39 insertions, 0 deletions
diff --git a/lib/pleroma/web/web_finger/web_finger.ex b/lib/pleroma/web/web_finger/web_finger.ex
new file mode 100644
index 000000000..eb540e92a
--- /dev/null
+++ b/lib/pleroma/web/web_finger/web_finger.ex
@@ -0,0 +1,39 @@
+defmodule Pleroma.Web.WebFinger do
+  alias Pleroma.XmlBuilder
+  alias Pleroma.User
+  alias Pleroma.Web.OStatus
+
+  def host_meta() do
+    base_url  = Pleroma.Web.base_url
+    {
+      :XRD, %{ xmlns: "http://docs.oasis-open.org/ns/xri/xrd-1.0" },
+      {
+        :Link, %{ rel: "lrdd", type: "application/xrd+xml", template: "#{base_url}/.well-known/webfinger?resource={uri}"  }
+      }
+    }
+    |> XmlBuilder.to_doc
+  end
+
+  def webfinger(resource) do
+    host = Pleroma.Web.host
+    regex = ~r/acct:(?<username>\w+)@#{host}/
+    case Regex.named_captures(regex, resource) do
+      %{"username" => username} ->
+        user = User.get_cached_by_nickname(username)
+        {:ok, represent_user(user)}
+      _ -> nil
+    end
+  end
+
+  def represent_user(user) do
+    {
+      :XRD, %{xmlns: "http://docs.oasis-open.org/ns/xri/xrd-1.0"},
+      [
+        {:Subject, "acct:#{user.nickname}@#{Pleroma.Web.host}"},
+        {:Alias, user.ap_id},
+        {:Link, %{rel: "http://schemas.google.com/g/2010#updates-from", type: "application/atom+xml", href: OStatus.feed_path(user)}}
+      ]
+    }
+    |> XmlBuilder.to_doc
+  end
+end