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_tag_with_this_attribute_values(:span, "class", ["h-card"])
  60   Meta.allow_tag_with_these_attributes(:span, [])
  61
  62   @allow_inline_images Pleroma.Config.get([:markup, :allow_inline_images])
  63
  64   if @allow_inline_images do
  65     # restrict img tags to http/https only, because of MediaProxy.
  66     Meta.allow_tag_with_uri_attributes(:img, ["src"], ["http", "https"])
  67
  68     Meta.allow_tag_with_these_attributes(:img, [
  69       "width",
  70       "height",
  71       "class",
  72       "title",
  73       "alt"
  74     ])
  75   end
  76
  77   if Pleroma.Config.get([:markup, :allow_tables]) do
  78     Meta.allow_tag_with_these_attributes(:table, [])
  79     Meta.allow_tag_with_these_attributes(:tbody, [])
  80     Meta.allow_tag_with_these_attributes(:td, [])
  81     Meta.allow_tag_with_these_attributes(:th, [])
  82     Meta.allow_tag_with_these_attributes(:thead, [])
  83     Meta.allow_tag_with_these_attributes(:tr, [])
  84   end
  85
  86   if Pleroma.Config.get([:markup, :allow_headings]) do
  87     Meta.allow_tag_with_these_attributes(:h1, [])
  88     Meta.allow_tag_with_these_attributes(:h2, [])
  89     Meta.allow_tag_with_these_attributes(:h3, [])
  90     Meta.allow_tag_with_these_attributes(:h4, [])
  91     Meta.allow_tag_with_these_attributes(:h5, [])
  92   end
  93
  94   if Pleroma.Config.get([:markup, :allow_fonts]) do
  95     Meta.allow_tag_with_these_attributes(:font, ["face"])
  96   end
  97
  98   Meta.strip_everything_not_covered()
  99 end