Merge branch 'develop' into gun
[akkoma] / lib / pleroma / web / web_finger / web_finger.ex
index a3b0bf9999343d71332d3842ee5505e2b9c9df95..db567a02e0fbebf5832be41f03e8b371fd1522b9 100644 (file)
@@ -1,14 +1,12 @@
 # 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
@@ -34,7 +32,7 @@ defmodule Pleroma.Web.WebFinger do
 
   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_cached_by_nickname(username) do
@@ -50,100 +48,55 @@ defmodule Pleroma.Web.WebFinger do
     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)
+  defp get_magic_key("data:application/magic-public-key," <> magic_key) do
+    {:ok, magic_key}
+  end
 
-      User.update_and_set_cache(cng)
-    end
+  defp get_magic_key(nil) do
+    Logger.debug("Undefined magic key.")
+    {:ok, nil}
   end
 
-  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."}
+  defp get_magic_key(_) do
+    {:error, "Missing magic key data."}
   end
 
   defp webfinger_from_xml(doc) do
@@ -155,7 +108,6 @@ defmodule Pleroma.Web.WebFinger do
              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},
@@ -170,7 +122,6 @@ defmodule Pleroma.Web.WebFinger do
         "magic_key" => magic_key,
         "topic" => topic,
         "subject" => subject,
-        "salmon" => salmon,
         "subscribe_address" => subscribe_address,
         "ap_id" => ap_id
       }
@@ -195,16 +146,6 @@ defmodule Pleroma.Web.WebFinger 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"])
 
@@ -228,11 +169,11 @@ defmodule Pleroma.Web.WebFinger do
 
   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}} <- HTTP.get("https://#{domain}/.well-known/host-meta", []) do
           get_template_from_xml(body)
         else
           e -> {:error, "Can't find LRDD template: #{inspect(e)}"}
@@ -240,6 +181,7 @@ defmodule Pleroma.Web.WebFinger do
     end
   end
 
+  @spec finger(String.t()) :: {:ok, map()} | {:error, any()}
   def finger(account) do
     account = String.trim_leading(account, "@")
 
@@ -261,9 +203,9 @@ defmodule Pleroma.Web.WebFinger do
       end
 
     with response <-
-           @httpoison.get(
+           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)
@@ -273,8 +215,6 @@ defmodule Pleroma.Web.WebFinger do
       else
         with {:ok, doc} <- Jason.decode(body) do
           webfinger_from_json(doc)
-        else
-          {:error, e} -> e
         end
       end
     else