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// Copyright 2017 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package sanitizer // import "miniflux.app/reader/sanitizer"
import "testing"
func TestValidInput(t *testing.T) {
input := `<p>This is a <strong>text</strong> with an image: <img src="http://example.org/" alt="Test" loading="lazy">.</p>`
output := Sanitize("http://example.org/", input)
if input != output {
t.Errorf(`Wrong output: "%s" != "%s"`, input, output)
}
}
func TestSelfClosingTags(t *testing.T) {
input := `<p>This <br> is a <strong>text</strong> <br/>with an image: <img src="http://example.org/" alt="Test" loading="lazy"/>.</p>`
output := Sanitize("http://example.org/", input)
if input != output {
t.Errorf(`Wrong output: "%s" != "%s"`, input, output)
}
}
func TestTable(t *testing.T) {
input := `<table><tr><th>A</th><th colspan="2">B</th></tr><tr><td>C</td><td>D</td><td>E</td></tr></table>`
output := Sanitize("http://example.org/", input)
if input != output {
t.Errorf(`Wrong output: "%s" != "%s"`, input, output)
}
}
func TestRelativeURL(t *testing.T) {
input := `This <a href="/test.html">link is relative</a> and this image: <img src="../folder/image.png"/>`
expected := `This <a href="http://example.org/test.html" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">link is relative</a> and this image: <img src="http://example.org/folder/image.png" loading="lazy"/>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestProtocolRelativeURL(t *testing.T) {
input := `This <a href="//static.example.org/index.html">link is relative</a>.`
expected := `This <a href="https://static.example.org/index.html" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">link is relative</a>.`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestInvalidTag(t *testing.T) {
input := `<p>My invalid <b>tag</b>.</p>`
expected := `<p>My invalid tag.</p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestVideoTag(t *testing.T) {
input := `<p>My valid <video src="videofile.webm" autoplay poster="posterimage.jpg">fallback</video>.</p>`
expected := `<p>My valid <video src="http://example.org/videofile.webm" poster="http://example.org/posterimage.jpg" controls>fallback</video>.</p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestAudioAndSourceTag(t *testing.T) {
input := `<p>My music <audio controls="controls"><source src="foo.wav" type="audio/wav"></audio>.</p>`
expected := `<p>My music <audio controls><source src="http://example.org/foo.wav" type="audio/wav"></audio>.</p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestUnknownTag(t *testing.T) {
input := `<p>My invalid <unknown>tag</unknown>.</p>`
expected := `<p>My invalid tag.</p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestInvalidNestedTag(t *testing.T) {
input := `<p>My invalid <b>tag with some <em>valid</em> tag</b>.</p>`
expected := `<p>My invalid tag with some <em>valid</em> tag.</p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestInvalidIFrame(t *testing.T) {
input := `<iframe src="http://example.org/"></iframe>`
expected := ``
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestInvalidURLScheme(t *testing.T) {
input := `<p>This link is <a src="file:///etc/passwd">not valid</a></p>`
expected := `<p>This link is not valid</p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestBlacklistedLink(t *testing.T) {
input := `<p>This image is not valid <img src="https://stats.wordpress.com/some-tracker"></p>`
expected := `<p>This image is not valid </p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestPixelTracker(t *testing.T) {
input := `<p><img src="https://tracker1.example.org/" height="1" width="1"> and <img src="https://tracker2.example.org/" height="1" width="1"/></p>`
expected := `<p> and </p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestXmlEntities(t *testing.T) {
input := `<pre>echo "test" > /etc/hosts</pre>`
expected := `<pre>echo "test" > /etc/hosts</pre>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestEspaceAttributes(t *testing.T) {
input := `<td rowspan="<b>test</b>">test</td>`
expected := `<td rowspan="<b>test</b>">test</td>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestReplaceYoutubeURL(t *testing.T) {
input := `<iframe src="http://www.youtube.com/embed/test123?version=3&rel=1&fs=1&autohide=2&showsearch=0&showinfo=1&iv_load_policy=1&wmode=transparent"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/test123?version=3&rel=1&fs=1&autohide=2&showsearch=0&showinfo=1&iv_load_policy=1&wmode=transparent" sandbox="allow-scripts allow-same-origin allow-popups" loading="lazy"></iframe>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestReplaceSecureYoutubeURL(t *testing.T) {
input := `<iframe src="https://www.youtube.com/embed/test123"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/test123" sandbox="allow-scripts allow-same-origin allow-popups" loading="lazy"></iframe>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestReplaceSecureYoutubeURLWithParameters(t *testing.T) {
input := `<iframe src="https://www.youtube.com/embed/test123?rel=0&controls=0"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/test123?rel=0&controls=0" sandbox="allow-scripts allow-same-origin allow-popups" loading="lazy"></iframe>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestReplaceYoutubeURLAlreadyReplaced(t *testing.T) {
input := `<iframe src="https://www.youtube-nocookie.com/embed/test123?rel=0&controls=0" sandbox="allow-scripts allow-same-origin"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/test123?rel=0&controls=0" sandbox="allow-scripts allow-same-origin allow-popups" loading="lazy"></iframe>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestReplaceProtocolRelativeYoutubeURL(t *testing.T) {
input := `<iframe src="//www.youtube.com/embed/Bf2W84jrGqs" width="560" height="314" allowfullscreen="allowfullscreen"></iframe>`
expected := `<iframe src="https://www.youtube-nocookie.com/embed/Bf2W84jrGqs" width="560" height="314" allowfullscreen="allowfullscreen" sandbox="allow-scripts allow-same-origin allow-popups" loading="lazy"></iframe>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestReplaceIframeURL(t *testing.T) {
input := `<iframe src="https://player.vimeo.com/video/123456?title=0&byline=0"></iframe>`
expected := `<iframe src="https://player.vimeo.com/video/123456?title=0&byline=0" sandbox="allow-scripts allow-same-origin allow-popups" loading="lazy"></iframe>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestReplaceNoScript(t *testing.T) {
input := `<p>Before paragraph.</p><noscript>Inside <code>noscript</code> tag with an image: <img src="http://example.org/" alt="Test" loading="lazy"></noscript><p>After paragraph.</p>`
expected := `<p>Before paragraph.</p><p>After paragraph.</p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestReplaceScript(t *testing.T) {
input := `<p>Before paragraph.</p><script type="text/javascript">alert("1");</script><p>After paragraph.</p>`
expected := `<p>Before paragraph.</p><p>After paragraph.</p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestReplaceStyle(t *testing.T) {
input := `<p>Before paragraph.</p><style>body { background-color: #ff0000; }</style><p>After paragraph.</p>`
expected := `<p>Before paragraph.</p><p>After paragraph.</p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
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