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Allow to specify colors for text in markup #20363

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Merged
merged 6 commits into from
Jul 15, 2022
Merged

Allow to specify colors for text in markup #20363

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9cfd4c6
Allow to specify colors for text in markup
Jul 14, 2022
edd958a
Merge branch 'main' into allow-style-color-text
Jul 14, 2022
8716e48
Merge branch 'main' into allow-style-color-text
Jul 14, 2022
a72576f
Add more test cases
Jul 14, 2022
1381e97
Merge branch 'main' into allow-style-color-text
Jul 14, 2022
f883c22
Merge branch 'main' into allow-style-color-text
wxiaoguang Jul 15, 2022
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6 changes: 6 additions & 0 deletions modules/markup/sanitizer.go
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Original file line number Diff line number Diff line change
Expand Up @@ -85,6 +85,12 @@ func createDefaultPolicy() *bluemonday.Policy {
// Allow icons, emojis, chroma syntax and keyword markup on span
policy.AllowAttrs("class").Matching(regexp.MustCompile(`^((icon(\s+[\p{L}\p{N}_-]+)+)|(emoji))$|^([a-z][a-z0-9]{0,2})$|^` + keywordClass + `$`)).OnElements("span")

// Allow 'style' attribute on text elements.
policy.AllowAttrs("style").OnElements("span", "p")

// Allow 'color' property for the style attribute on text elements.
policy.AllowStyles("color").OnElements("span", "p")

// Allow generally safe attributes
generalSafeAttrs := []string{
"abbr", "accept", "accept-charset",
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8 changes: 8 additions & 0 deletions modules/markup/sanitizer_test.go
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Expand Up @@ -45,6 +45,14 @@ func Test_Sanitizer(t *testing.T) {
`<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>`,
}

for i := 0; i < len(testCases); i += 2 {
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