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authorJohann-S <johann.servoire@gmail.com>2019-02-23 01:37:55 +0300
committerXhmikosR <xhmikosr@gmail.com>2019-02-26 14:04:04 +0300
commit8a37045b798fd66ede9c68774f9bb657e28d956a (patch)
tree35a1cf1b26701975f9732e99553e53fb295678c7 /js/src/tools/sanitizer.js
parent8affe84c722bc459e7152e57d36a4f515f537abf (diff)
move util in a util folder with the sanitizer
Diffstat (limited to 'js/src/tools/sanitizer.js')
-rw-r--r--js/src/tools/sanitizer.js129
1 files changed, 0 insertions, 129 deletions
diff --git a/js/src/tools/sanitizer.js b/js/src/tools/sanitizer.js
deleted file mode 100644
index 3c1608fee8..0000000000
--- a/js/src/tools/sanitizer.js
+++ /dev/null
@@ -1,129 +0,0 @@
-/**
- * --------------------------------------------------------------------------
- * Bootstrap (v4.3.1): tools/sanitizer.js
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- * --------------------------------------------------------------------------
- */
-
-import Util from '../util'
-
-const uriAttrs = [
- 'background',
- 'cite',
- 'href',
- 'itemtype',
- 'longdesc',
- 'poster',
- 'src',
- 'xlink:href'
-]
-
-const ARIA_ATTRIBUTE_PATTERN = /^aria-[\w-]*$/i
-
-export const DefaultWhitelist = {
- // Global attributes allowed on any supplied element below.
- '*': ['class', 'dir', 'id', 'lang', 'role', ARIA_ATTRIBUTE_PATTERN],
- a: ['target', 'href', 'title', 'rel'],
- area: [],
- b: [],
- br: [],
- col: [],
- code: [],
- div: [],
- em: [],
- hr: [],
- h1: [],
- h2: [],
- h3: [],
- h4: [],
- h5: [],
- h6: [],
- i: [],
- img: ['src', 'alt', 'title', 'width', 'height'],
- li: [],
- ol: [],
- p: [],
- pre: [],
- s: [],
- small: [],
- span: [],
- sub: [],
- sup: [],
- strong: [],
- u: [],
- ul: []
-}
-
-/**
- * A pattern that recognizes a commonly useful subset of URLs that are safe.
- *
- * Shoutout to Angular 7 https://github.com/angular/angular/blob/7.2.4/packages/core/src/sanitization/url_sanitizer.ts
- */
-const SAFE_URL_PATTERN = /^(?:(?:https?|mailto|ftp|tel|file):|[^&:/?#]*(?:[/?#]|$))/gi
-
-/**
- * A pattern that matches safe data URLs. Only matches image, video and audio types.
- *
- * Shoutout to Angular 7 https://github.com/angular/angular/blob/7.2.4/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,[a-z0-9+/]+=*$/i
-
-function allowedAttribute(attr, allowedAttributeList) {
- const attrName = attr.nodeName.toLowerCase()
-
- if (allowedAttributeList.indexOf(attrName) !== -1) {
- if (uriAttrs.indexOf(attrName) !== -1) {
- return Boolean(attr.nodeValue.match(SAFE_URL_PATTERN) || attr.nodeValue.match(DATA_URL_PATTERN))
- }
-
- return true
- }
-
- const regExp = allowedAttributeList.filter((attrRegex) => attrRegex instanceof RegExp)
-
- // Check if a regular expression validates the attribute.
- for (let i = 0, l = regExp.length; i < l; i++) {
- if (attrName.match(regExp[i])) {
- return true
- }
- }
-
- return false
-}
-
-export function sanitizeHtml(unsafeHtml, whiteList, sanitizeFn) {
- if (unsafeHtml.length === 0) {
- return unsafeHtml
- }
-
- if (sanitizeFn && typeof sanitizeFn === 'function') {
- return sanitizeFn(unsafeHtml)
- }
-
- const domParser = new window.DOMParser()
- const createdDocument = domParser.parseFromString(unsafeHtml, 'text/html')
- const whitelistKeys = Object.keys(whiteList)
- const elements = Util.makeArray(createdDocument.body.querySelectorAll('*'))
-
- for (let i = 0, len = elements.length; i < len; i++) {
- const el = elements[i]
- const elName = el.nodeName.toLowerCase()
-
- if (whitelistKeys.indexOf(el.nodeName.toLowerCase()) === -1) {
- el.parentNode.removeChild(el)
-
- continue
- }
-
- const attributeList = Util.makeArray(el.attributes)
- const whitelistedAttributes = [].concat(whiteList['*'] || [], whiteList[elName] || [])
-
- attributeList.forEach((attr) => {
- if (!allowedAttribute(attr, whitelistedAttributes)) {
- el.removeAttribute(attr.nodeName)
- }
- })
- }
-
- return createdDocument.body.innerHTML
-}