# 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
+ 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})}}
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
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
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