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| -rw-r--r-- | modules/markup/sanitizer_test.go | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/modules/markup/sanitizer_test.go b/modules/markup/sanitizer_test.go new file mode 100644 index 0000000..4441a41 --- /dev/null +++ b/modules/markup/sanitizer_test.go @@ -0,0 +1,110 @@ +// Copyright 2017 The Gitea Authors. All rights reserved. +// Copyright 2017 The Gogs Authors. All rights reserved. +// SPDX-License-Identifier: MIT + +package markup + +import ( + "html/template" + "strings" + "testing" + + "github.com/stretchr/testify/assert" +) + +func Test_Sanitizer(t *testing.T) { + NewSanitizer() + testCases := []string{ + // Regular + `<a onblur="alert(secret)" href="http://www.google.com">Google</a>`, `<a href="http://www.google.com" rel="nofollow">Google</a>`, + + // Code highlighting class + `<code class="random string"></code>`, `<code></code>`, + `<code class="language-random ui tab active menu attached animating sidebar following bar center"></code>`, `<code></code>`, + `<code class="language-go"></code>`, `<code class="language-go"></code>`, + + // Input checkbox + `<input type="hidden">`, ``, + `<input type="checkbox">`, `<input type="checkbox">`, + `<input checked disabled autofocus>`, `<input checked="" disabled="">`, + + // Code highlight injection + `<code class="language-random ui tab active menu attached animating sidebar following bar center"></code>`, `<code></code>`, + `<code class="language-lol ui tab active menu attached animating sidebar following bar center"> +<code class="language-lol ui container input huge basic segment center"> </code> +<img src="https://try.gogs.io/img/favicon.png" width="200" height="200"> +<code class="language-lol ui container input massive basic segment">Hello there! Something has gone wrong, we are working on it.</code> +<code class="language-lol ui container input huge basic segment">In the meantime, play a game with us at <a href="http://example.com/">example.com</a>.</code> +</code>`, "<code>\n<code>\u00a0</code>\n<img src=\"https://try.gogs.io/img/favicon.png\" width=\"200\" height=\"200\">\n<code>Hello there! Something has gone wrong, we are working on it.</code>\n<code>In the meantime, play a game with us at\u00a0<a href=\"http://example.com/\" rel=\"nofollow\">example.com</a>.</code>\n</code>", + + // <kbd> tags + `<kbd>Ctrl + C</kbd>`, `<kbd>Ctrl + C</kbd>`, + `<i class="dropdown icon">NAUGHTY</i>`, `<i>NAUGHTY</i>`, + `<i class="icon dropdown"></i>`, `<i class="icon dropdown"></i>`, + `<input type="checkbox" disabled=""/>unchecked`, `<input type="checkbox" disabled=""/>unchecked`, + `<span class="emoji dropdown">NAUGHTY</span>`, `<span>NAUGHTY</span>`, + `<span class="emoji">contents</span>`, `<span class="emoji">contents</span>`, + + // Color property + `<span style="color: red">Hello World</span>`, `<span style="color: red">Hello World</span>`, + `<p style="color: red; background-color: red">Hello World</p>`, `<p style="color: red; background-color: red">Hello World</p>`, + `<table><tr><th style="color: red">TH1</th><th style="background-color: red">TH2</th><th style="color: red; background-color: red">TH3</th></tr><tr><td style="color: red">TD1</td><td style="background-color: red">TD2</td><td style="color: red; background-color: red">TD3</td></tr></table>`, `<table><tr><th style="color: red">TH1</th><th style="background-color: red">TH2</th><th style="color: red; background-color: red">TH3</th></tr><tr><td style="color: red">TD1</td><td style="background-color: red">TD2</td><td style="color: red; background-color: red">TD3</td></tr></table>`, + `<code style="color: red">Hello World</code>`, `<code>Hello World</code>`, + `<code style="background-color: red">Hello World</code>`, `<code>Hello World</code>`, + `<span style="bad-color: red">Hello World</span>`, `<span>Hello World</span>`, + `<p style="bad-color: red">Hello World</p>`, `<p>Hello World</p>`, + `<code style="bad-color: red">Hello World</code>`, `<code>Hello World</code>`, + + // Org mode status of list items. + `<li class="checked"></li>`, `<li class="checked"></li>`, + `<li class="unchecked"></li>`, `<li class="unchecked"></li>`, + `<li class="indeterminate"></li>`, `<li class="indeterminate"></li>`, + + // URLs + `<a href="cbthunderlink://somebase64string)">my custom URL scheme</a>`, `<a href="cbthunderlink://somebase64string)" rel="nofollow">my custom URL scheme</a>`, + `<a href="matrix:roomid/psumPMeAfzgAeQpXMG:feneas.org?action=join">my custom URL scheme</a>`, `<a href="matrix:roomid/psumPMeAfzgAeQpXMG:feneas.org?action=join" rel="nofollow">my custom URL scheme</a>`, + + // Disallow dangerous url schemes + `<a href="javascript:alert('xss')">bad</a>`, `bad`, + `<a href="vbscript:no">bad</a>`, `bad`, + `<a href="data:1234">bad</a>`, `bad`, + } + + for i := 0; i < len(testCases); i += 2 { + assert.Equal(t, testCases[i+1], Sanitize(testCases[i])) + } +} + +func TestDescriptionSanitizer(t *testing.T) { + NewSanitizer() + + testCases := []string{ + `<h1>Title</h1>`, `Title`, + `<img src='img.png' alt='image'>`, ``, + `<span class="emoji" aria-label="thumbs up">THUMBS UP</span>`, `<span class="emoji" aria-label="thumbs up">THUMBS UP</span>`, + `<span style="color: red">Hello World</span>`, `<span>Hello World</span>`, + `<br>`, ``, + `<a href="https://example.com" target="_blank" rel="noopener noreferrer">https://example.com</a>`, `<a href="https://example.com" target="_blank" rel="noopener noreferrer nofollow">https://example.com</a>`, + `<mark>Important!</mark>`, `Important!`, + `<details>Click me! <summary>Nothing to see here.</summary></details>`, `Click me! Nothing to see here.`, + `<input type="hidden">`, ``, + `<b>I</b> have a <i>strong</i> <strong>opinion</strong> about <em>this</em>.`, `<b>I</b> have a <i>strong</i> <strong>opinion</strong> about <em>this</em>.`, + `Provides alternative <code>wg(8)</code> tool`, `Provides alternative <code>wg(8)</code> tool`, + `<a href="javascript:alert('xss')">Click me</a>.`, `Click me.`, + `<a href="data:text/html,<script>alert('xss')</script>">Click me</a>.`, `Click me.`, + `<a href="vbscript:msgbox("xss")">Click me</a>.`, `Click me.`, + } + + for i := 0; i < len(testCases); i += 2 { + assert.Equal(t, testCases[i+1], SanitizeDescription(testCases[i])) + } +} + +func TestSanitizeNonEscape(t *testing.T) { + descStr := "<scrİpt><script>alert(document.domain)</script></scrİpt>" + + output := template.HTML(Sanitize(descStr)) + if strings.Contains(string(output), "<script>") { + t.Errorf("un-escaped <script> in output: %q", output) + } +} |