Merge branch 'remove-linker-scheme-option' into 'develop'

[akkoma] / lib / pleroma / formatter.ex

diff --git a/lib/pleroma/formatter.ex b/lib/pleroma/formatter.ex
index 8ea9dbd38f2eff4b5b23766a314f11cd23986838..90895374daa9509ab52766671b0814bb851c9b08 100644 (file)
--- a/lib/pleroma/formatter.ex
+++ b/lib/pleroma/formatter.ex
@@ -3,31 +3,41 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Formatter do
-  alias Pleroma.Emoji
   alias Pleroma.HTML
   alias Pleroma.User
-  alias Pleroma.Web.MediaProxy
 
-  @safe_mention_regex ~r/^(\s*(?<mentions>@.+?\s+)+)(?<rest>.*)/
+  @safe_mention_regex ~r/^(\s*(?<mentions>(@.+?\s+){1,})+)(?<rest>.*)/s
+  @link_regex ~r"((?:http(s)?:\/\/)?[\w.-]+(?:\.[\w\.-]+)+[\w\-\._~%:/?#[\]@!\$&'\(\)\*\+,;=.]+)|[0-9a-z+\-\.]+:[0-9a-z$-_.+!*'(),]+"ui
   @markdown_characters_regex ~r/(`|\*|_|{|}|[|]|\(|\)|#|\+|-|\.|!)/
-  @link_regex ~r{((?:http(s)?:\/\/)?[\w.-]+(?:\.[\w\.-]+)+[\w\-\._~%:/?#[\]@!\$&'\(\)\*\+,;=.]+)|[0-9a-z+\-\.]+:[0-9a-z$-_.+!*'(),]+}ui
-  # credo:disable-for-previous-line Credo.Check.Readability.MaxLineLength
 
   @auto_linker_config hashtag: true,
                       hashtag_handler: &Pleroma.Formatter.hashtag_handler/4,
                       mention: true,
-                      mention_handler: &Pleroma.Formatter.mention_handler/4
+                      mention_handler: &Pleroma.Formatter.mention_handler/4,
+                      scheme: true
+
+  def escape_mention_handler("@" <> nickname = mention, buffer, _, _) do
+    case User.get_cached_by_nickname(nickname) do
+      %User{} ->
+        # escape markdown characters with `\\`
+        # (we don't want something like @user__name to be parsed by markdown)
+        String.replace(mention, @markdown_characters_regex, "\\\\\\1")
+
+      _ ->
+        buffer
+    end
+  end
 
   def mention_handler("@" <> nickname, buffer, opts, acc) do
     case User.get_cached_by_nickname(nickname) do
       %User{id: id} = user ->
         ap_id = get_ap_id(user)
-        nickname_text = get_nickname_text(nickname, opts) |> maybe_escape(opts)
+        nickname_text = get_nickname_text(nickname, opts)
 
         link =
-          "<span class='h-card'><a data-user='#{id}' class='u-url mention' href='#{ap_id}'>@<span>#{
+          ~s(<span class="h-card"><a data-user="#{id}" class="u-url mention" href="#{ap_id}" rel="ugc">@<span>#{
             nickname_text
-          }</span></a></span>"
+          }</span></a></span>)
 
         {link, %{acc | mentions: MapSet.put(acc.mentions, {"@" <> nickname, user})}}
 
@@ -39,7 +49,7 @@ defmodule Pleroma.Formatter do
   def hashtag_handler("#" <> tag = tag_text, _buffer, _opts, acc) do
     tag = String.downcase(tag)
     url = "#{Pleroma.Web.base_url()}/tag/#{tag}"
-    link = "<a class='hashtag' data-tag='#{tag}' href='#{url}' rel='tag'>#{tag_text}</a>"
+    link = ~s(<a class="hashtag" data-tag="#{tag}" href="#{url}" rel="tag ugc">#{tag_text}</a>)
 
     {link, %{acc | tags: MapSet.put(acc.tags, {tag_text, tag})}}
   end
@@ -70,42 +80,25 @@ defmodule Pleroma.Formatter do
     end
   end
 
-  def emojify(text) do
-    emojify(text, Emoji.get_all())
-  end
-
-  def emojify(text, nil), do: text
-
-  def emojify(text, emoji, strip \\ false) do
-    Enum.reduce(emoji, text, fn emoji_data, text ->
-      emoji = HTML.strip_tags(elem(emoji_data, 0))
-      file = HTML.strip_tags(elem(emoji_data, 1))
-
-      html =
-        if not strip do
-          "<img height='32px' width='32px' alt='#{emoji}' title='#{emoji}' src='#{
-            MediaProxy.url(file)
-          }' />"
-        else
-          ""
-        end
-
-      String.replace(text, ":#{emoji}:", html) |> HTML.filter_tags()
-    end)
-  end
-
-  def demojify(text) do
-    emojify(text, Emoji.get_all(), true)
-  end
-
-  def demojify(text, nil), do: text
+  @doc """
+  Escapes a special characters in mention names.
+  """
+  def mentions_escape(text, options \\ []) do
+    options =
+      Keyword.merge(options,
+        mention: true,
+        url: false,
+        mention_handler: &Pleroma.Formatter.escape_mention_handler/4
+      )
 
-  def get_emoji(text) when is_binary(text) do
-    Enum.filter(Emoji.get_all(), fn {emoji, _, _} -> String.contains?(text, ":#{emoji}:") end)
+    if options[:safe_mention] && Regex.named_captures(@safe_mention_regex, text) do
+      %{"mentions" => mentions, "rest" => rest} = Regex.named_captures(@safe_mention_regex, text)
+      AutoLinker.link(mentions, options) <> AutoLinker.link(rest, options)
+    else
+      AutoLinker.link(text, options)
+    end
   end
 
-  def get_emoji(_), do: []
-
   def html_escape({text, mentions, hashtags}, type) do
     {html_escape(text, type), mentions, hashtags}
   end
@@ -135,15 +128,9 @@ defmodule Pleroma.Formatter do
     end
   end
 
-  defp get_ap_id(%User{info: %{source_data: %{"url" => url}}}) when is_binary(url), do: url
+  defp get_ap_id(%User{source_data: %{"url" => url}}) when is_binary(url), do: url
   defp get_ap_id(%User{ap_id: ap_id}), do: ap_id
 
   defp get_nickname_text(nickname, %{mentions_format: :full}), do: User.full_nickname(nickname)
   defp get_nickname_text(nickname, _), do: User.local_nickname(nickname)
-
-  defp maybe_escape(str, %{mentions_escape: true}) do
-    String.replace(str, @markdown_characters_regex, "\\\\\\1")
-  end
-
-  defp maybe_escape(str, _), do: str
 end