forked from potsda.mn/mobilizon
120 lines
3.1 KiB
Elixir
120 lines
3.1 KiB
Elixir
defmodule Mobilizon.Service.WebFinger do
|
|
@moduledoc """
|
|
# WebFinger
|
|
|
|
Performs the WebFinger requests and responses (json only)
|
|
"""
|
|
|
|
alias Mobilizon.Actors
|
|
alias Mobilizon.Actors.Actor
|
|
alias Mobilizon.Service.XmlBuilder
|
|
require Jason
|
|
require Logger
|
|
|
|
def host_meta do
|
|
base_url = MobilizonWeb.Endpoint.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, "JSON") do
|
|
host = MobilizonWeb.Endpoint.host()
|
|
regex = ~r/(acct:)?(?<name>\w+)@#{host}/
|
|
|
|
with %{"name" => name} <- Regex.named_captures(regex, resource),
|
|
%Actor{} = actor <- Actors.get_local_actor_by_name(name) do
|
|
{:ok, represent_actor(actor, "JSON")}
|
|
else
|
|
_e ->
|
|
with {:ok, %Actor{} = actor} when not is_nil(actor) <- Actors.get_actor_by_url(resource) do
|
|
{:ok, represent_actor(actor, "JSON")}
|
|
else
|
|
_e ->
|
|
{:error, "Couldn't find actor"}
|
|
end
|
|
end
|
|
end
|
|
|
|
@spec represent_actor(Actor.t()) :: struct()
|
|
def represent_actor(actor), do: represent_actor(actor, "JSON")
|
|
|
|
def represent_actor(actor, "JSON") do
|
|
%{
|
|
"subject" => "acct:#{actor.preferred_username}@#{MobilizonWeb.Endpoint.host()}",
|
|
"aliases" => [actor.url],
|
|
"links" => [
|
|
%{"rel" => "self", "type" => "application/activity+json", "href" => actor.url},
|
|
%{
|
|
"rel" => "https://webfinger.net/rel/profile-page/",
|
|
"type" => "text/html",
|
|
"href" => actor.url
|
|
}
|
|
]
|
|
}
|
|
end
|
|
|
|
defp webfinger_from_json(doc) do
|
|
data =
|
|
Enum.reduce(doc["links"], %{"subject" => doc["subject"]}, fn link, data ->
|
|
case {link["type"], link["rel"]} do
|
|
{"application/activity+json", "self"} ->
|
|
Map.put(data, "url", link["href"])
|
|
|
|
_ ->
|
|
Logger.debug(fn ->
|
|
"Unhandled type: #{inspect(link["type"])}"
|
|
end)
|
|
|
|
data
|
|
end
|
|
end)
|
|
|
|
{:ok, data}
|
|
end
|
|
|
|
def finger(actor) do
|
|
actor = String.trim_leading(actor, "@")
|
|
|
|
domain =
|
|
with [_name, domain] <- String.split(actor, "@") do
|
|
domain
|
|
else
|
|
_e ->
|
|
URI.parse(actor).host
|
|
end
|
|
|
|
address = "http://#{domain}/.well-known/webfinger?resource=acct:#{actor}"
|
|
|
|
Logger.debug(inspect(address))
|
|
|
|
with false <- is_nil(domain),
|
|
{:ok, %HTTPoison.Response{} = response} <-
|
|
HTTPoison.get(
|
|
address,
|
|
[Accept: "application/json, application/activity+json, application/jrd+json"],
|
|
follow_redirect: true
|
|
),
|
|
%{status_code: status_code, body: body} when status_code in 200..299 <- response,
|
|
{:ok, doc} <- Jason.decode(body) do
|
|
webfinger_from_json(doc)
|
|
else
|
|
e ->
|
|
Logger.debug(fn -> "Couldn't finger #{actor}" end)
|
|
Logger.debug(fn -> inspect(e) end)
|
|
{:error, e}
|
|
end
|
|
end
|
|
end
|