blob: 039ca36af6ea79f0a984d88ae27cd45badfd6a45 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Banzai::Filter::SanitizationFilter do
include FilterSpecHelper
it_behaves_like 'default allowlist'
describe 'custom allowlist' do
it_behaves_like 'XSS prevention'
it_behaves_like 'sanitize link'
it 'customizes the allowlist only once' do
instance = described_class.new('Foo')
control_count = instance.allowlist[:transformers].size
3.times { instance.allowlist }
expect(instance.allowlist[:transformers].size).to eq control_count
end
it 'customizes the allowlist only once for different instances' do
instance1 = described_class.new('Foo1')
instance2 = described_class.new('Foo2')
control_count = instance1.allowlist[:transformers].size
instance1.allowlist
instance2.allowlist
expect(instance1.allowlist[:transformers].size).to eq control_count
expect(instance2.allowlist[:transformers].size).to eq control_count
end
it 'sanitizes `class` attribute from all elements' do
act = %q(<pre class="code highlight white c"><code><span class="k">def</span></code></pre>)
exp = %q(<pre><code><span class="k">def</span></code></pre>)
expect(filter(act).to_html).to eq exp
end
it 'sanitizes `class` attribute from non-highlight spans' do
act = %q(<span class="k">def</span>)
expect(filter(act).to_html).to eq %q(<span>def</span>)
end
it 'allows `text-align` property in `style` attribute on table elements' do
html = <<~HTML
<table>
<tr><th style="text-align: center">Head</th></tr>
<tr><td style="text-align: right">Body</th></tr>
</table>
HTML
doc = filter(html)
expect(doc.at_css('th')['style']).to eq 'text-align: center'
expect(doc.at_css('td')['style']).to eq 'text-align: right'
end
it 'disallows other properties in `style` attribute on table elements' do
html = <<~HTML
<table>
<tr><th style="text-align: foo">Head</th></tr>
<tr><td style="position: fixed; height: 50px; width: 50px; background: red; z-index: 999; font-size: 36px; text-align: center">Body</th></tr>
</table>
HTML
doc = filter(html)
expect(doc.at_css('th')['style']).to be_nil
expect(doc.at_css('td')['style']).to eq 'text-align: center'
end
it 'disallows `text-align` property in `style` attribute on other elements' do
html = <<~HTML
<div style="text-align: center">Text</div>
HTML
doc = filter(html)
expect(doc.at_css('div')['style']).to be_nil
end
it 'allows `span` elements' do
exp = act = %q(<span>Hello</span>)
expect(filter(act).to_html).to eq exp
end
it 'allows `abbr` elements' do
exp = act = %q(<abbr title="HyperText Markup Language">HTML</abbr>)
expect(filter(act).to_html).to eq exp
end
it 'disallows the `name` attribute globally, allows on `a`' do
html = <<~HTML
<img name="getElementById" src="">
<span name="foo" class="bar">Hi</span>
<a name="foo" class="bar">Bye</a>
HTML
doc = filter(html)
expect(doc.at_css('img')).not_to have_attribute('name')
expect(doc.at_css('span')).not_to have_attribute('name')
expect(doc.at_css('a')).to have_attribute('name')
end
it 'allows `summary` elements' do
exp = act = '<summary>summary line</summary>'
expect(filter(act).to_html).to eq exp
end
it 'allows `details` elements' do
exp = act = '<details>long text goes here</details>'
expect(filter(act).to_html).to eq exp
end
it 'allows `rel=license` in links' do
exp = act = '<a rel="license" href="http://example.com">rel-license</a>'
expect(filter(act).to_html).to eq exp
end
it 'allows `data-math-style` attribute on `code` and `pre` elements' do
html = <<-HTML
<pre class="code" data-math-style="inline">something</pre>
<code class="code" data-math-style="inline">something</code>
<div class="code" data-math-style="inline">something</div>
HTML
output = <<-HTML
<pre data-math-style="inline">something</pre>
<code data-math-style="inline">something</code>
<div>something</div>
HTML
expect(filter(html).to_html).to eq(output)
end
it 'allows the `data-sourcepos` attribute globally' do
exp = %q(<p data-sourcepos="1:1-1:10">foo/bar.md</p>)
act = filter(exp)
expect(act.to_html).to eq exp
end
describe 'footnotes' do
it 'allows correct footnote id property on links' do
exp = %q(<a href="#fn-first" id="fnref-first">foo/bar.md</a>)
act = filter(exp)
expect(act.to_html).to eq exp
end
it 'allows correct footnote id property on li element' do
exp = %q(<ol><li id="fn-last">footnote</li></ol>)
act = filter(exp)
expect(act.to_html).to eq exp
end
it 'removes invalid id for footnote links' do
exp = %q(<a href="#fn1">link</a>)
%w[fnrefx test xfnref-1].each do |id|
act = filter(%(<a href="#fn1" id="#{id}">link</a>))
expect(act.to_html).to eq exp
end
end
it 'removes invalid id for footnote li' do
exp = %q(<ol><li>footnote</li></ol>)
%w[fnx test xfn-1].each do |id|
act = filter(%(<ol><li id="#{id}">footnote</li></ol>))
expect(act.to_html).to eq exp
end
end
end
end
end
|
