# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Web.WebFinger do
|> XmlBuilder.to_doc()
end
- defp get_magic_key("data:application/magic-public-key," <> magic_key) do
- {:ok, magic_key}
- end
+ defp webfinger_from_xml(doc) do
+ subject = XML.string_from_xpath("//Subject", doc)
- defp get_magic_key(nil) do
- Logger.debug("Undefined magic key.")
- {:ok, nil}
- end
+ subscribe_address =
+ ~s{//Link[@rel="http://ostatus.org/schema/1.0/subscribe"]/@template}
+ |> XML.string_from_xpath(doc)
- defp get_magic_key(_) do
- {:error, "Missing magic key data."}
- end
+ ap_id =
+ ~s{//Link[@rel="self" and @type="application/activity+json"]/@href}
+ |> XML.string_from_xpath(doc)
- defp webfinger_from_xml(doc) do
- with magic_key <- XML.string_from_xpath(~s{//Link[@rel="magic-public-key"]/@href}, doc),
- {:ok, magic_key} <- get_magic_key(magic_key),
- topic <-
- XML.string_from_xpath(
- ~s{//Link[@rel="http://schemas.google.com/g/2010#updates-from"]/@href},
- doc
- ),
- subject <- XML.string_from_xpath("//Subject", doc),
- salmon <- XML.string_from_xpath(~s{//Link[@rel="salmon"]/@href}, doc),
- subscribe_address <-
- XML.string_from_xpath(
- ~s{//Link[@rel="http://ostatus.org/schema/1.0/subscribe"]/@template},
- doc
- ),
- ap_id <-
- XML.string_from_xpath(
- ~s{//Link[@rel="self" and @type="application/activity+json"]/@href},
- doc
- ) do
- data = %{
- "magic_key" => magic_key,
- "topic" => topic,
- "subject" => subject,
- "salmon" => salmon,
- "subscribe_address" => subscribe_address,
- "ap_id" => ap_id
- }
-
- {:ok, data}
- else
- {:error, e} ->
- {:error, e}
+ data = %{
+ "subject" => subject,
+ "subscribe_address" => subscribe_address,
+ "ap_id" => ap_id
+ }
- e ->
- {:error, e}
- end
+ {:ok, data}
end
defp webfinger_from_json(doc) do
{"application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"", "self"} ->
Map.put(data, "ap_id", link["href"])
- {_, "magic-public-key"} ->
- "data:application/magic-public-key," <> magic_key = link["href"]
- Map.put(data, "magic_key", magic_key)
-
- {"application/atom+xml", "http://schemas.google.com/g/2010#updates-from"} ->
- Map.put(data, "topic", link["href"])
-
- {_, "salmon"} ->
- Map.put(data, "salmon", link["href"])
-
- {_, "http://ostatus.org/schema/1.0/subscribe"} ->
- Map.put(data, "subscribe_address", link["template"])
-
_ ->
Logger.debug("Unhandled type: #{inspect(link["type"])}")
data
def find_lrdd_template(domain) do
with {:ok, %{status: status, body: body}} when status in 200..299 <-
- HTTP.get("http://#{domain}/.well-known/host-meta", []) do
+ HTTP.get("http://#{domain}/.well-known/host-meta") do
get_template_from_xml(body)
else
_ ->
- with {:ok, %{body: body}} <- HTTP.get("https://#{domain}/.well-known/host-meta", []) do
+ with {:ok, %{body: body, status: status}} when status in 200..299 <-
+ HTTP.get("https://#{domain}/.well-known/host-meta") do
get_template_from_xml(body)
else
e -> {:error, "Can't find LRDD template: #{inspect(e)}"}
end
end
+ defp get_address_from_domain(domain, encoded_account) when is_binary(domain) do
+ case find_lrdd_template(domain) do
+ {:ok, template} ->
+ String.replace(template, "{uri}", encoded_account)
+
+ _ ->
+ "https://#{domain}/.well-known/webfinger?resource=#{encoded_account}"
+ end
+ end
+
+ defp get_address_from_domain(_, _), do: nil
+
+ @spec finger(String.t()) :: {:ok, map()} | {:error, any()}
def finger(account) do
account = String.trim_leading(account, "@")
URI.parse(account).host
end
- address =
- case find_lrdd_template(domain) do
- {:ok, template} ->
- String.replace(template, "{uri}", URI.encode(account))
+ encoded_account = URI.encode("acct:#{account}")
- _ ->
- "https://#{domain}/.well-known/webfinger?resource=acct:#{account}"
- end
-
- with response <-
+ with address when is_binary(address) <- get_address_from_domain(domain, encoded_account),
+ response <-
HTTP.get(
address,
- Accept: "application/xrd+xml,application/jrd+json"
+ [{"accept", "application/xrd+xml,application/jrd+json"}]
),
{:ok, %{status: status, body: body}} when status in 200..299 <- response do
doc = XML.parse_document(body)
else
with {:ok, doc} <- Jason.decode(body) do
webfinger_from_json(doc)
- else
- {:error, e} -> e
end
end
else