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- // 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">Hello World</p>`, `<p style="color: red">Hello World</p>`,
- `<code style="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">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`,
- }
-
- 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)
- }
- }
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