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Allow to specify colors for text in markup (#20363)

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`<span style="color: red">Hello World!</span>` will now be accepted by
Bluemonday, other properties are still disallowed by Bluemonday.
This commit is contained in:
Gusted
2022-07-15 06:38:10 +00:00
committed by GitHub
parent 4ddae2c1b5
commit edd945bca3
2 changed files with 14 additions and 0 deletions
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6
modules/markup/sanitizer.go
View File

@@ -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",

8
modules/markup/sanitizer_test.go
View File

@@ -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 {