Allow 'rel' attribute on `<a>` link with specific values (for hashtag recognition).

This commit is contained in:
Fong-Wan Chau 2019-03-17 09:46:46 -04:00
parent 6d6f48d079
commit 4ed2618f6c
4 changed files with 24 additions and 2 deletions

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@ -95,6 +95,13 @@ defmodule Pleroma.HTML.Scrubber.TwitterText do
Meta.allow_tag_with_uri_attributes("a", ["href", "data-user", "data-tag"], @valid_schemes)
Meta.allow_tag_with_these_attributes("a", ["name", "title", "class"])
Meta.allow_tag_with_this_attribute_values("a", "rel", [
"tag",
"nofollow",
"noopener",
"noreferrer"
])
# paragraphs and linebreaks
Meta.allow_tag_with_these_attributes("br", [])
Meta.allow_tag_with_these_attributes("p", [])
@ -137,6 +144,13 @@ defmodule Pleroma.HTML.Scrubber.Default do
Meta.allow_tag_with_uri_attributes("a", ["href", "data-user", "data-tag"], @valid_schemes)
Meta.allow_tag_with_these_attributes("a", ["name", "title", "class"])
Meta.allow_tag_with_this_attribute_values("a", "rel", [
"tag",
"nofollow",
"noopener",
"noreferrer"
])
Meta.allow_tag_with_these_attributes("abbr", ["title"])
Meta.allow_tag_with_these_attributes("b", [])

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@ -10,6 +10,8 @@ defmodule Pleroma.HTMLTest do
<b>this is in bold</b>
<p>this is a paragraph</p>
this is a linebreak<br />
this is a link with allowed "rel" attribute: <a href="http://example.com/" rel="tag">example.com</a>
this is a link with not allowed "rel" attribute: <a href="http://example.com/" rel="tag noallowed">example.com</a>
this is an image: <img src="http://example.com/image.jpg"><br />
<script>alert('hacked')</script>
"""
@ -24,6 +26,8 @@ test "works as expected" do
this is in bold
this is a paragraph
this is a linebreak
this is a link with allowed "rel" attribute: example.com
this is a link with not allowed "rel" attribute: example.com
this is an image:
alert('hacked')
"""
@ -44,6 +48,8 @@ test "normalizes HTML as expected" do
this is in bold
<p>this is a paragraph</p>
this is a linebreak<br />
this is a link with allowed "rel" attribute: <a href="http://example.com/" rel="tag">example.com</a>
this is a link with not allowed "rel" attribute: <a href="http://example.com/">example.com</a>
this is an image: <img src="http://example.com/image.jpg" /><br />
alert('hacked')
"""
@ -66,6 +72,8 @@ test "normalizes HTML as expected" do
<b>this is in bold</b>
<p>this is a paragraph</p>
this is a linebreak<br />
this is a link with allowed "rel" attribute: <a href="http://example.com/" rel="tag">example.com</a>
this is a link with not allowed "rel" attribute: <a href="http://example.com/">example.com</a>
this is an image: <img src="http://example.com/image.jpg" /><br />
alert('hacked')
"""

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@ -1632,7 +1632,7 @@ test "updates the user's bio", %{conn: conn} do
assert user = json_response(conn, 200)
assert user["note"] ==
~s(I drink <a class="hashtag" data-tag="cofe" href="http://localhost:4001/tag/cofe">#cofe</a> with <span class="h-card"><a data-user=") <>
~s(I drink <a class="hashtag" data-tag="cofe" href="http://localhost:4001/tag/cofe" rel="tag">#cofe</a> with <span class="h-card"><a data-user=") <>
user2.id <>
~s(" class="u-url mention" href=") <>
user2.ap_id <> ~s(">@<span>) <> user2.nickname <> ~s(</span></a></span>)

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@ -82,7 +82,7 @@ test "a create activity with a html status" do
result = ActivityView.render("activity.json", activity: activity)
assert result["statusnet_html"] ==
"<a class=\"hashtag\" data-tag=\"bike\" href=\"http://localhost:4001/tag/bike\">#Bike</a> log - Commute Tuesday<br /><a href=\"https://pla.bike/posts/20181211/\">https://pla.bike/posts/20181211/</a><br /><a class=\"hashtag\" data-tag=\"cycling\" href=\"http://localhost:4001/tag/cycling\">#cycling</a> <a class=\"hashtag\" data-tag=\"chscycling\" href=\"http://localhost:4001/tag/chscycling\">#CHScycling</a> <a class=\"hashtag\" data-tag=\"commute\" href=\"http://localhost:4001/tag/commute\">#commute</a><br />MVIMG_20181211_054020.jpg"
"<a class=\"hashtag\" data-tag=\"bike\" href=\"http://localhost:4001/tag/bike\" rel=\"tag\">#Bike</a> log - Commute Tuesday<br /><a href=\"https://pla.bike/posts/20181211/\">https://pla.bike/posts/20181211/</a><br /><a class=\"hashtag\" data-tag=\"cycling\" href=\"http://localhost:4001/tag/cycling\" rel=\"tag\">#cycling</a> <a class=\"hashtag\" data-tag=\"chscycling\" href=\"http://localhost:4001/tag/chscycling\" rel=\"tag\">#CHScycling</a> <a class=\"hashtag\" data-tag=\"commute\" href=\"http://localhost:4001/tag/commute\" rel=\"tag\">#commute</a><br />MVIMG_20181211_054020.jpg"
assert result["text"] ==
"#Bike log - Commute Tuesday\nhttps://pla.bike/posts/20181211/\n#cycling #CHScycling #commute\nMVIMG_20181211_054020.jpg"