git.squeep.com Git - akkoma/blob - priv/scrubbers/default.ex

   1 defmodule Pleroma.HTML.Scrubber.Default do
   2   @doc "The default HTML scrubbing policy: no "
   3
   4   require FastSanitize.Sanitizer.Meta
   5   alias FastSanitize.Sanitizer.Meta
   6
   7   # credo:disable-for-previous-line
   8   # No idea how to fix this one…
   9
  10   @valid_schemes Pleroma.Config.get([:uri_schemes, :valid_schemes], [])
  11
  12   Meta.strip_comments()
  13
  14   Meta.allow_tag_with_uri_attributes(:a, ["href", "data-user", "data-tag"], @valid_schemes)
  15
  16   Meta.allow_tag_with_this_attribute_values(:a, "class", [
  17     "hashtag",
  18     "u-url",
  19     "mention",
  20     "u-url mention",
  21     "mention u-url"
  22   ])
  23
  24   Meta.allow_tag_with_this_attribute_values(:a, "rel", [
  25     "tag",
  26     "nofollow",
  27     "noopener",
  28     "noreferrer",
  29     "ugc"
  30   ])
  31
  32   Meta.allow_tag_with_these_attributes(:a, ["name", "title"])
  33
  34   Meta.allow_tag_with_these_attributes(:abbr, ["title"])
  35
  36   Meta.allow_tag_with_these_attributes(:b, [])
  37   Meta.allow_tag_with_these_attributes(:blockquote, [])
  38   Meta.allow_tag_with_these_attributes(:br, [])
  39   Meta.allow_tag_with_these_attributes(:code, [])
  40   Meta.allow_tag_with_these_attributes(:del, [])
  41   Meta.allow_tag_with_these_attributes(:em, [])
  42   Meta.allow_tag_with_these_attributes(:hr, [])
  43   Meta.allow_tag_with_these_attributes(:i, [])
  44   Meta.allow_tag_with_these_attributes(:li, [])
  45   Meta.allow_tag_with_these_attributes(:ol, [])
  46   Meta.allow_tag_with_these_attributes(:p, [])
  47   Meta.allow_tag_with_these_attributes(:pre, [])
  48   Meta.allow_tag_with_these_attributes(:strong, [])
  49   Meta.allow_tag_with_these_attributes(:sub, [])
  50   Meta.allow_tag_with_these_attributes(:sup, [])
  51   Meta.allow_tag_with_these_attributes(:ruby, [])
  52   Meta.allow_tag_with_these_attributes(:rb, [])
  53   Meta.allow_tag_with_these_attributes(:rp, [])
  54   Meta.allow_tag_with_these_attributes(:rt, [])
  55   Meta.allow_tag_with_these_attributes(:rtc, [])
  56   Meta.allow_tag_with_these_attributes(:u, [])
  57   Meta.allow_tag_with_these_attributes(:ul, [])
  58
  59   Meta.allow_tags_with_style_attributes([:span])
  60
  61   Meta.allow_tag_with_this_attribute_values(:span, "class", [
  62     "h-card",
  63     "quote-inline",
  64     "mfm",
  65     "mfm _mfm_tada_",
  66     "mfm _mfm_jelly_",
  67     "mfm _mfm_twitch_",
  68     "mfm _mfm_shake_",
  69     "mfm _mfm_spin_",
  70     "mfm _mfm_jump_",
  71     "mfm _mfm_bounce_",
  72     "mfm _mfm_flip_",
  73     "mfm _mfm_x2_",
  74     "mfm _mfm_x3_",
  75     "mfm _mfm_x4_",
  76     "mfm _mfm_blur_",
  77     "mfm _mfm_rainbow_",
  78     "mfm _mfm_rotate_"
  79   ])
  80
  81   Meta.allow_tag_with_these_attributes(:span, [
  82     "data-x",
  83     "data-y",
  84     "data-h",
  85     "data-v",
  86     "data-left",
  87     "data-right"
  88   ])
  89
  90   Meta.allow_tag_with_this_attribute_values(:code, "class", ["inline"])
  91
  92   @allow_inline_images Pleroma.Config.get([:markup, :allow_inline_images])
  93
  94   if @allow_inline_images do
  95     # restrict img tags to http/https only, because of MediaProxy.
  96     Meta.allow_tag_with_uri_attributes(:img, ["src"], ["http", "https"])
  97
  98     Meta.allow_tag_with_these_attributes(:img, [
  99       "width",
 100       "height",
 101       "title",
 102       "alt"
 103     ])
 104   end
 105
 106   if Pleroma.Config.get([:markup, :allow_tables]) do
 107     Meta.allow_tag_with_these_attributes(:table, [])
 108     Meta.allow_tag_with_these_attributes(:tbody, [])
 109     Meta.allow_tag_with_these_attributes(:td, [])
 110     Meta.allow_tag_with_these_attributes(:th, [])
 111     Meta.allow_tag_with_these_attributes(:thead, [])
 112     Meta.allow_tag_with_these_attributes(:tr, [])
 113   end
 114
 115   if Pleroma.Config.get([:markup, :allow_headings]) do
 116     Meta.allow_tag_with_these_attributes(:h1, [])
 117     Meta.allow_tag_with_these_attributes(:h2, [])
 118     Meta.allow_tag_with_these_attributes(:h3, [])
 119     Meta.allow_tag_with_these_attributes(:h4, [])
 120     Meta.allow_tag_with_these_attributes(:h5, [])
 121   end
 122
 123   if Pleroma.Config.get([:markup, :allow_fonts]) do
 124     Meta.allow_tag_with_these_attributes(:font, ["face"])
 125   end
 126
 127   Meta.allow_tag_with_these_attributes(:center, [])
 128   Meta.allow_tag_with_these_attributes(:small, [])
 129
 130   Meta.strip_everything_not_covered()
 131
 132   defp scrub_css(value), do: value
 133 end