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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 TestAPTURIScheme(t *testing.T) {
input := `<p>This link is <a href="apt:some-package?channel=test">valid</a></p>`
expected := `<p>This link is <a href="apt:some-package?channel=test" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestBitcoinURIScheme(t *testing.T) {
input := `<p>This link is <a href="bitcoin:175tWpb8K1S7NmH4Zx6rewF9WQrcZv245W">valid</a></p>`
expected := `<p>This link is <a href="bitcoin:175tWpb8K1S7NmH4Zx6rewF9WQrcZv245W" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestCallToURIScheme(t *testing.T) {
input := `<p>This link is <a href="callto:12345679">valid</a></p>`
expected := `<p>This link is <a href="callto:12345679" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestFeedURIScheme(t *testing.T) {
input := `<p>This link is <a href="feed://example.com/rss.xml">valid</a></p>`
expected := `<p>This link is <a href="feed://example.com/rss.xml" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
input = `<p>This link is <a href="feed:https://example.com/rss.xml">valid</a></p>`
expected = `<p>This link is <a href="feed:https://example.com/rss.xml" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output = Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestGeoURIScheme(t *testing.T) {
input := `<p>This link is <a href="geo:13.4125,103.8667">valid</a></p>`
expected := `<p>This link is <a href="geo:13.4125,103.8667" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestItunesURIScheme(t *testing.T) {
input := `<p>This link is <a href="itms://itunes.com/apps/my-app-name">valid</a></p>`
expected := `<p>This link is <a href="itms://itunes.com/apps/my-app-name" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
input = `<p>This link is <a href="itms-apps://itunes.com/apps/my-app-name">valid</a></p>`
expected = `<p>This link is <a href="itms-apps://itunes.com/apps/my-app-name" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output = Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestMagnetURIScheme(t *testing.T) {
input := `<p>This link is <a href="magnet:?xt.1=urn:sha1:YNCKHTQCWBTRNJIV4WNAE52SJUQCZO5C&xt.2=urn:sha1:TXGCZQTH26NL6OUQAJJPFALHG2LTGBC7">valid</a></p>`
expected := `<p>This link is <a href="magnet:?xt.1=urn:sha1:YNCKHTQCWBTRNJIV4WNAE52SJUQCZO5C&xt.2=urn:sha1:TXGCZQTH26NL6OUQAJJPFALHG2LTGBC7" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestMailtoURIScheme(t *testing.T) {
input := `<p>This link is <a href="mailto:jsmith@example.com?subject=A%20Test&body=My%20idea%20is%3A%20%0A">valid</a></p>`
expected := `<p>This link is <a href="mailto:jsmith@example.com?subject=A%20Test&body=My%20idea%20is%3A%20%0A" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestNewsURIScheme(t *testing.T) {
input := `<p>This link is <a href="news://news.server.example/*">valid</a></p>`
expected := `<p>This link is <a href="news://news.server.example/*" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
input = `<p>This link is <a href="news:example.group.this">valid</a></p>`
expected = `<p>This link is <a href="news:example.group.this" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output = Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
input = `<p>This link is <a href="nntp://news.server.example/example.group.this">valid</a></p>`
expected = `<p>This link is <a href="nntp://news.server.example/example.group.this" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output = Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestRTMPURIScheme(t *testing.T) {
input := `<p>This link is <a href="rtmp://mycompany.com/vod/mp4:mycoolvideo.mov">valid</a></p>`
expected := `<p>This link is <a href="rtmp://mycompany.com/vod/mp4:mycoolvideo.mov" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestSIPURIScheme(t *testing.T) {
input := `<p>This link is <a href="sip:+1-212-555-1212:1234@gateway.com;user=phone">valid</a></p>`
expected := `<p>This link is <a href="sip:+1-212-555-1212:1234@gateway.com;user=phone" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
input = `<p>This link is <a href="sips:alice@atlanta.com?subject=project%20x&priority=urgent">valid</a></p>`
expected = `<p>This link is <a href="sips:alice@atlanta.com?subject=project%20x&priority=urgent" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output = Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestSkypeURIScheme(t *testing.T) {
input := `<p>This link is <a href="skype:echo123?call">valid</a></p>`
expected := `<p>This link is <a href="skype:echo123?call" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestSpotifyURIScheme(t *testing.T) {
input := `<p>This link is <a href="spotify:track:2jCnn1QPQ3E8ExtLe6INsx">valid</a></p>`
expected := `<p>This link is <a href="spotify:track:2jCnn1QPQ3E8ExtLe6INsx" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestSteamURIScheme(t *testing.T) {
input := `<p>This link is <a href="steam://settings/account">valid</a></p>`
expected := `<p>This link is <a href="steam://settings/account" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestSubversionURIScheme(t *testing.T) {
input := `<p>This link is <a href="svn://example.org">valid</a></p>`
expected := `<p>This link is <a href="svn://example.org" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
input = `<p>This link is <a href="svn+ssh://example.org">valid</a></p>`
expected = `<p>This link is <a href="svn+ssh://example.org" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output = Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestTelURIScheme(t *testing.T) {
input := `<p>This link is <a href="tel:+1-201-555-0123">valid</a></p>`
expected := `<p>This link is <a href="tel:+1-201-555-0123" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestWebcalURIScheme(t *testing.T) {
input := `<p>This link is <a href="webcal://example.com/calendar.ics">valid</a></p>`
expected := `<p>This link is <a href="webcal://example.com/calendar.ics" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></p>`
output := Sanitize("http://example.org/", input)
if expected != output {
t.Errorf(`Wrong output: "%s" != "%s"`, expected, output)
}
}
func TestXMPPURIScheme(t *testing.T) {
input := `<p>This link is <a href="xmpp:user@host?subscribe&type=subscribed">valid</a></p>`
expected := `<p>This link is <a href="xmpp:user@host?subscribe&type=subscribed" rel="noopener noreferrer" target="_blank" referrerpolicy="no-referrer">valid</a></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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