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sanitize template option for tooltip/popover plugins
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| /** | ||
| * -------------------------------------------------------------------------- | ||
| * Bootstrap (v4.3.0): tools/sanitizer.js | ||
| * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) | ||
| * -------------------------------------------------------------------------- | ||
| */ | ||
|
|
||
| const uriAttrs = [ | ||
| 'background', | ||
| 'cite', | ||
| 'href', | ||
| 'itemtype', | ||
| 'longdesc', | ||
| 'poster', | ||
| 'src', | ||
| 'xlink:href' | ||
| ] | ||
|
|
||
| // The allowedAttribute method should check to see if the supplied value is | ||
| // a regular expression, this would allow this to support any number of aria | ||
| // attributes by default and give users the ability to specify their own regular | ||
| // expressions should the need arise (e.g. /^data-my-app-[\w-]*$/). | ||
| const ARIA_ATTRIBUTE_PATTERN = /^aria-[\w-]*$/i | ||
|
|
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| 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() | ||
|
|
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| if (allowedAttributeList.indexOf(attrName) !== -1) { | ||
| if (uriAttrs.indexOf(attrName) !== -1) { | ||
| return Boolean(attr.nodeValue.match(SAFE_URL_PATTERN) || attr.nodeValue.match(DATA_URL_PATTERN)) | ||
| } | ||
|
|
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| return true | ||
| } | ||
|
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| return false | ||
| } | ||
|
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| export function sanitizeHtml(unsafeHtml, whiteList) { | ||
| const domParser = new window.DOMParser() | ||
| const createdDocument = domParser.parseFromString(unsafeHtml, 'text/html') | ||
| const whitelistKeys = Object.keys(whiteList) | ||
| const elements = [].slice.call(createdDocument.body.querySelectorAll('*')) | ||
|
|
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| 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) | ||
|
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| continue | ||
| } | ||
|
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| const attributeList = [].slice.call(el.attributes) | ||
| const whitelistedAttributes = [].concat(whiteList['*'] || [], whiteList[elName] || []) | ||
|
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| attributeList.forEach((attr) => { | ||
| if (!allowedAttribute(attr, whitelistedAttributes)) { | ||
| el.removeAttribute(attr.nodeName) | ||
| } | ||
| }) | ||
| } | ||
|
|
||
| return createdDocument.body.innerHTML | ||
| } |
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