# 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
- @httpoison Application.get_env(:pleroma, :httpoison)
-
+ alias Pleroma.HTTP
alias Pleroma.User
alias Pleroma.Web
- alias Pleroma.Web.OStatus
- alias Pleroma.Web.Salmon
+ alias Pleroma.Web.Federator.Publisher
alias Pleroma.Web.XML
alias Pleroma.XmlBuilder
require Jason
def webfinger(resource, fmt) when fmt in ["XML", "JSON"] do
host = Pleroma.Web.Endpoint.host()
- regex = ~r/(acct:)?(?<username>\w+)@#{host}/
+ regex = ~r/(acct:)?(?<username>[a-z0-9A-Z_\.-]+)@#{host}/
with %{"username" => username} <- Regex.named_captures(regex, resource),
- %User{} = user <- User.get_by_nickname(username) do
+ %User{} = user <- User.get_cached_by_nickname(username) do
{:ok, represent_user(user, fmt)}
else
_e ->
end
end
+ defp gather_links(%User{} = user) do
+ [
+ %{
+ "rel" => "http://webfinger.net/rel/profile-page",
+ "type" => "text/html",
+ "href" => user.ap_id
+ }
+ ] ++ Publisher.gather_webfinger_links(user)
+ end
+
def represent_user(user, "JSON") do
- {:ok, user} = ensure_keys_present(user)
- {:ok, _private, public} = Salmon.keys_from_pem(user.info.keys)
- magic_key = Salmon.encode_key(public)
+ {:ok, user} = User.ensure_keys_present(user)
%{
"subject" => "acct:#{user.nickname}@#{Pleroma.Web.Endpoint.host()}",
"aliases" => [user.ap_id],
- "links" => [
- %{
- "rel" => "http://schemas.google.com/g/2010#updates-from",
- "type" => "application/atom+xml",
- "href" => OStatus.feed_path(user)
- },
- %{
- "rel" => "http://webfinger.net/rel/profile-page",
- "type" => "text/html",
- "href" => user.ap_id
- },
- %{"rel" => "salmon", "href" => OStatus.salmon_path(user)},
- %{
- "rel" => "magic-public-key",
- "href" => "data:application/magic-public-key,#{magic_key}"
- },
- %{"rel" => "self", "type" => "application/activity+json", "href" => user.ap_id},
- %{
- "rel" => "self",
- "type" => "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"",
- "href" => user.ap_id
- },
- %{
- "rel" => "http://ostatus.org/schema/1.0/subscribe",
- "template" => OStatus.remote_follow_path()
- }
- ]
+ "links" => gather_links(user)
}
end
def represent_user(user, "XML") do
- {:ok, user} = ensure_keys_present(user)
- {:ok, _private, public} = Salmon.keys_from_pem(user.info.keys)
- magic_key = Salmon.encode_key(public)
+ {:ok, user} = User.ensure_keys_present(user)
+
+ links =
+ gather_links(user)
+ |> Enum.map(fn link -> {:Link, link} end)
{
:XRD,
%{xmlns: "http://docs.oasis-open.org/ns/xri/xrd-1.0"},
[
{:Subject, "acct:#{user.nickname}@#{Pleroma.Web.Endpoint.host()}"},
- {:Alias, user.ap_id},
- {:Link,
- %{
- rel: "http://schemas.google.com/g/2010#updates-from",
- type: "application/atom+xml",
- href: OStatus.feed_path(user)
- }},
- {:Link,
- %{rel: "http://webfinger.net/rel/profile-page", type: "text/html", href: user.ap_id}},
- {:Link, %{rel: "salmon", href: OStatus.salmon_path(user)}},
- {:Link,
- %{rel: "magic-public-key", href: "data:application/magic-public-key,#{magic_key}"}},
- {:Link, %{rel: "self", type: "application/activity+json", href: user.ap_id}},
- {:Link,
- %{rel: "http://ostatus.org/schema/1.0/subscribe", template: OStatus.remote_follow_path()}}
- ]
+ {:Alias, user.ap_id}
+ ] ++ links
}
|> XmlBuilder.to_doc()
end
- # This seems a better fit in Salmon
- def ensure_keys_present(user) do
- info = user.info
-
- if info.keys do
- {:ok, user}
- else
- {:ok, pem} = Salmon.generate_rsa_pem()
-
- info_cng =
- info
- |> Pleroma.User.Info.set_keys(pem)
-
- cng =
- Ecto.Changeset.change(user)
- |> Ecto.Changeset.put_embed(:info, info_cng)
-
- User.update_and_set_cache(cng)
- end
- end
+ defp webfinger_from_xml(doc) do
+ subject = XML.string_from_xpath("//Subject", doc)
- defp get_magic_key(magic_key) do
- "data:application/magic-public-key," <> magic_key = magic_key
- {:ok, magic_key}
- rescue
- MatchError -> {:error, "Missing magic key data."}
- end
+ subscribe_address =
+ ~s{//Link[@rel="http://ostatus.org/schema/1.0/subscribe"]/@template}
+ |> 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
- }
+ ap_id =
+ ~s{//Link[@rel="self" and @type="application/activity+json"]/@href}
+ |> XML.string_from_xpath(doc)
- {: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 <-
- @httpoison.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}} <- @httpoison.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 <-
- @httpoison.get(
+ 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
projects / akkoma / blobdiff