mirror of
https://github.com/philomena-dev/philomena.git
synced 2024-12-05 00:57:59 +01:00
48 lines
994 B
Elixir
48 lines
994 B
Elixir
defmodule PhilomenaWeb.UserAttributionPlug do
|
|
@moduledoc """
|
|
This plug stores information about the current session for use in
|
|
model attribution.
|
|
|
|
## Example
|
|
|
|
plug PhilomenaWeb.UserAttributionPlug
|
|
"""
|
|
|
|
alias Plug.Conn
|
|
|
|
@doc false
|
|
@spec init(any()) :: any()
|
|
def init(opts), do: opts
|
|
|
|
@doc false
|
|
@spec call(Plug.Conn.t(), any()) :: Plug.Conn.t()
|
|
def call(conn, _opts) do
|
|
{:ok, remote_ip} = EctoNetwork.INET.cast(conn.remote_ip)
|
|
conn = Conn.fetch_cookies(conn)
|
|
user = conn.assigns.current_user
|
|
|
|
attributes = [
|
|
ip: remote_ip,
|
|
fingerprint: fingerprint(conn, conn.path_info),
|
|
user: user
|
|
]
|
|
|
|
conn
|
|
|> Conn.assign(:attributes, attributes)
|
|
end
|
|
|
|
defp user_agent(conn) do
|
|
case Conn.get_req_header(conn, "user-agent") do
|
|
[ua] -> ua
|
|
_ -> nil
|
|
end
|
|
end
|
|
|
|
defp fingerprint(conn, ["api" | _]) do
|
|
"a#{:erlang.crc32(user_agent(conn))}"
|
|
end
|
|
|
|
defp fingerprint(conn, _) do
|
|
conn.cookies["_ses"]
|
|
end
|
|
end
|