4463571712

Build Type

push

github

Committed by GitHub

Commit Message

Proposal to use `scroll-margin-top` instead of introducing padding and negative margin (#38220)

Run Details

662 of 722 branches covered (91.69%)

Branch coverage included in aggregate %.

2020 of 2070 relevant lines covered (97.58%)

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95.56

/js/src/util/sanitizer.js

/**
 * --------------------------------------------------------------------------
 * Bootstrap (v5.3.0-alpha1): util/sanitizer.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
 * --------------------------------------------------------------------------
 */

const uriAttributes = new Set([
  'background',
  'cite',
  'href',
  'itemtype',
  'longdesc',
  'poster',
  'src',
  'xlink:href'
])

const ARIA_ATTRIBUTE_PATTERN = /^aria-[\w-]*$/i

/**
 * A pattern that recognizes a commonly useful subset of URLs that are safe.
 *
 * Shout-out to Angular https://github.com/angular/angular/blob/12.2.x/packages/core/src/sanitization/url_sanitizer.ts
 */
const SAFE_URL_PATTERN = /^(?:(?:https?|mailto|ftp|tel|file|sms):|[^#&/:?]*(?:[#/?]|$))/i

/**
 * A pattern that matches safe data URLs. Only matches image, video and audio types.
 *
 * Shout-out to Angular https://github.com/angular/angular/blob/12.2.x/packages/core/src/sanitization/url_sanitizer.ts
 */
const DATA_URL_PATTERN = /^data:(?:image\/(?:bmp|gif|jpeg|jpg|png|tiff|webp)|video\/(?:mpeg|mp4|ogg|webm)|audio\/(?:mp3|oga|ogg|opus));base64,[\d+/a-z]+=*$/i

const allowedAttribute = (attribute, allowedAttributeList) => {
  const attributeName = attribute.nodeName.toLowerCase()

  if (allowedAttributeList.includes(attributeName)) {
    if (uriAttributes.has(attributeName)) {
      return Boolean(SAFE_URL_PATTERN.test(attribute.nodeValue) || DATA_URL_PATTERN.test(attribute.nodeValue))
    }

    return true
  }

  // Check if a regular expression validates the attribute.
  return allowedAttributeList.filter(attributeRegex => attributeRegex instanceof RegExp)
    .some(regex => regex.test(attributeName))
}

export const DefaultAllowlist = {
  // Global attributes allowed on any supplied element below.
  '*': ['class', 'dir', 'id', 'lang', 'role', ARIA_ATTRIBUTE_PATTERN],
  a: ['target', 'href', 'title', 'rel'],
  area: [],
  b: [],
  br: [],
  col: [],
  code: [],
  div: [],
  em: [],
  hr: [],
  h1: [],
  h2: [],
  h3: [],
  h4: [],
  h5: [],
  h6: [],
  i: [],
  img: ['src', 'srcset', 'alt', 'title', 'width', 'height'],
  li: [],
  ol: [],
  p: [],
  pre: [],
  s: [],
  small: [],
  span: [],
  sub: [],
  sup: [],
  strong: [],
  u: [],
  ul: []
}

export function sanitizeHtml(unsafeHtml, allowList, sanitizeFunction) {
  if (!unsafeHtml.length) {
    return unsafeHtml
  }

  if (sanitizeFunction && typeof sanitizeFunction === 'function') {
    return sanitizeFunction(unsafeHtml)
  }

  const domParser = new window.DOMParser()
  const createdDocument = domParser.parseFromString(unsafeHtml, 'text/html')
  const elements = [].concat(...createdDocument.body.querySelectorAll('*'))

  for (const element of elements) {
    const elementName = element.nodeName.toLowerCase()

    if (!Object.keys(allowList).includes(elementName)) {
      element.remove()

      continue
    }

    const attributeList = [].concat(...element.attributes)
    const allowedAttributes = [].concat(allowList['*'] || [], allowList[elementName] || [])

    for (const attribute of attributeList) {
      if (!allowedAttribute(attribute, allowedAttributes)) {
        element.removeAttribute(attribute.nodeName)
      }
    }
  }

  return createdDocument.body.innerHTML
}

1	/**
2	* --------------------------------------------------------------------------
3	* Bootstrap (v5.3.0-alpha1): util/sanitizer.js
4	* Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
5	* --------------------------------------------------------------------------
6	*/
7
8	const uriAttributes = new Set([	4✔
9	'background',
10	'cite',
11	'href',
12	'itemtype',
13	'longdesc',
14	'poster',
15	'src',
16	'xlink:href'
17	])
18
19	const ARIA_ATTRIBUTE_PATTERN = /^aria-[\w-]*$/i	4✔
20
21	/**
22	* A pattern that recognizes a commonly useful subset of URLs that are safe.
23	*
24	* Shout-out to Angular https://github.com/angular/angular/blob/12.2.x/packages/core/src/sanitization/url_sanitizer.ts
25	*/
26	const SAFE_URL_PATTERN = /^(?:(?:https?\|mailto\|ftp\|tel\|file\|sms):\|[^#&/:?]*(?:[#/?]\|$))/i	4✔
27
28	/**
29	* A pattern that matches safe data URLs. Only matches image, video and audio types.
30	*
31	* Shout-out to Angular https://github.com/angular/angular/blob/12.2.x/packages/core/src/sanitization/url_sanitizer.ts
32	*/
33	const DATA_URL_PATTERN = /^data:(?:image\/(?:bmp\|gif\|jpeg\|jpg\|png\|tiff\|webp)\|video\/(?:mpeg\|mp4\|ogg\|webm)\|audio\/(?:mp3\|oga\|ogg\|opus));base64,[\d+/a-z]+=*$/i	4✔
34
35	const allowedAttribute = (attribute, allowedAttributeList) => {	4✔
36	const attributeName = attribute.nodeName.toLowerCase()	288✔
37
38	if (allowedAttributeList.includes(attributeName)) {	288✔
39	if (uriAttributes.has(attributeName)) {	283✔
40	return Boolean(SAFE_URL_PATTERN.test(attribute.nodeValue) \|\| DATA_URL_PATTERN.test(attribute.nodeValue))	7✔
41	}
42
43	return true	276✔
44	}
45
46	// Check if a regular expression validates the attribute.
47	return allowedAttributeList.filter(attributeRegex => attributeRegex instanceof RegExp)	49✔
48	.some(regex => regex.test(attributeName))	6✔
49	}
50
51	export const DefaultAllowlist = {	4✔
52	// Global attributes allowed on any supplied element below.
53	'*': ['class', 'dir', 'id', 'lang', 'role', ARIA_ATTRIBUTE_PATTERN],
54	a: ['target', 'href', 'title', 'rel'],
55	area: [],
56	b: [],
57	br: [],
58	col: [],
59	code: [],
60	div: [],
61	em: [],
62	hr: [],
63	h1: [],
64	h2: [],
65	h3: [],
66	h4: [],
67	h5: [],
68	h6: [],
69	i: [],
70	img: ['src', 'srcset', 'alt', 'title', 'width', 'height'],
71	li: [],
72	ol: [],
73	p: [],
74	pre: [],
75	s: [],
76	small: [],
77	span: [],
78	sub: [],
79	sup: [],
80	strong: [],
81	u: [],
82	ul: []
83	}
84
85	export function sanitizeHtml(unsafeHtml, allowList, sanitizeFunction) {
86	if (!unsafeHtml.length) {	92✔
87	return unsafeHtml	1✔
88	}
89
90	if (sanitizeFunction && typeof sanitizeFunction === 'function') {	91✔
91	return sanitizeFunction(unsafeHtml)	1✔
92	}
93
94	const domParser = new window.DOMParser()	90✔
95	const createdDocument = domParser.parseFromString(unsafeHtml, 'text/html')	90✔
96	const elements = [].concat(...createdDocument.body.querySelectorAll('*'))	90✔
97
98	for (const element of elements) {	90✔
99	const elementName = element.nodeName.toLowerCase()	251✔
100
101	if (!Object.keys(allowList).includes(elementName)) {	251✔
102	element.remove()	2✔
103
104	continue	2✔
105	}
106
107	const attributeList = [].concat(...element.attributes)	249✔
108	const allowedAttributes = [].concat(allowList['*'] \|\| [], allowList[elementName] \|\| [])	249!
109
110	for (const attribute of attributeList) {	249✔
111	if (!allowedAttribute(attribute, allowedAttributes)) {	288✔
112	element.removeAttribute(attribute.nodeName)	6✔
113	}
114	}
115	}
116
117	return createdDocument.body.innerHTML	90✔
118	}

twbs / bootstrap / 4463571712

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