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AG-22559 Add spoof-css scriptlet. #317
Squashed commit of the following: commit 307fb6e Merge: 4537c0a 1e27fb3 Author: Adam Wróblewski <adam@adguard.com> Date: Tue Jan 30 15:49:57 2024 +0100 Merge branch 'master' into feature/AG-22559 commit 4537c0a Author: Adam Wróblewski <adam@adguard.com> Date: Fri Jan 26 19:38:52 2024 +0100 Update compatibility table commit 242997c Author: Adam Wróblewski <adam@adguard.com> Date: Fri Jan 26 18:49:44 2024 +0100 Use matches() method instead of querySelectorAll commit 8cce776 Author: Adam Wróblewski <adam@adguard.com> Date: Fri Jan 26 17:05:38 2024 +0100 Remove debug argument commit 5034934 Merge: 6403dc8 d71db5c Author: Adam Wróblewski <adam@adguard.com> Date: Fri Jan 26 15:03:13 2024 +0100 Merge branch 'master' into feature/AG-22559 commit 6403dc8 Author: Adam Wróblewski <adam@adguard.com> Date: Fri Jan 26 14:54:19 2024 +0100 Allow only one pair of property name - value per rule commit a12558a Author: Adam Wróblewski <adam@adguard.com> Date: Fri Jan 19 15:10:55 2024 +0100 Add JSDoc comment Check if cssPropertyName and cssPropertyValue are set Use debug instead of shouldDebug Use template strings Add convertSpoofCssArgs method to converter Add conversion tests commit c7ef889 Author: Adam Wróblewski <adam@adguard.com> Date: Thu Jan 18 12:14:52 2024 +0100 Use separate arguments for CSS name and CSS value Add support for uBO spoof-css arguments Get rid of excessive nesting commit 7480077 Author: Adam Wróblewski <adam@adguard.com> Date: Mon Jan 15 13:31:00 2024 +0100 Fix too long line commit 0a89055 Author: Adam Wróblewski <adam@adguard.com> Date: Sun Jan 14 13:05:01 2024 +0100 Add spoof-css scriptlet
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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|
@@ -270,6 +270,7 @@ | |
| "ubo": "window.name-defuser.js" | ||
| }, | ||
| { | ||
| "adg": "spoof-css", | ||
| "ubo": "spoof-css.js" | ||
| }, | ||
| { | ||
|
|
||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,259 @@ | ||
| import { | ||
| hit, | ||
| } from '../helpers/index'; | ||
|
|
||
| /* eslint-disable max-len */ | ||
| /** | ||
| * @scriptlet spoof-css | ||
| * | ||
| * @description | ||
| * Spoof CSS property value when `getComputedStyle()` or `getBoundingClientRect()` methods is called. | ||
| * | ||
| * Related UBO scriptlet: | ||
| * https://github.com/gorhill/uBlock/wiki/Resources-Library#spoof-cssjs- | ||
| * | ||
| * ### Syntax | ||
| * | ||
| * ```text | ||
| * example.org#%#//scriptlet('spoof-css', selectors, cssNameProperty, cssNameValue) | ||
| * ``` | ||
| * | ||
| * - `selectors` — string of comma-separated selectors to match | ||
| * - `cssPropertyName` — CSS property name | ||
| * - `cssPropertyValue` — CSS property value | ||
| * | ||
| * > Call with `debug` as `cssPropertyName` and `truthy` value as `cssPropertyValue` will trigger debugger statement | ||
| * > when `getComputedStyle()` or `getBoundingClientRect()` methods is called. | ||
| * > It may be useful for debugging but it is not allowed for prod versions of filter lists. | ||
| * | ||
| * ### Examples | ||
| * | ||
| * 1. Spoof CSS property value `display` to `block` for all elements with class `adsbygoogle`: | ||
| * | ||
| * ```adblock | ||
| * example.org#%#//scriptlet('spoof-css', '.adsbygoogle', 'display', 'block') | ||
| * ``` | ||
| * | ||
| * 2. Spoof CSS property value `height` to `100` for all elements with class `adsbygoogle` and `advert`: | ||
| * | ||
| * ```adblock | ||
| * example.org#%#//scriptlet('spoof-css', '.adsbygoogle, .advert', 'height', '100') | ||
| * ``` | ||
| * | ||
| * 3. To invoke debugger statement: | ||
| * | ||
| * ```adblock | ||
| * example.org#%#//scriptlet('spoof-css', '.adsbygoogle', 'debug', 'true') | ||
| * ``` | ||
| * | ||
| * | ||
| * @added unknown. | ||
| */ | ||
| /* eslint-enable max-len */ | ||
|
|
||
| export function spoofCSS(source, selectors, cssPropertyName, cssPropertyValue) { | ||
| if (!selectors) { | ||
| return; | ||
| } | ||
|
|
||
| const uboAliases = [ | ||
| 'spoof-css.js', | ||
| 'ubo-spoof-css.js', | ||
| 'ubo-spoof-css', | ||
| ]; | ||
|
|
||
| /** | ||
| * getComputedStyle uses camelCase version of CSS properties | ||
| * for example, "clip-path" is displayed as "clipPath" | ||
| * so it's needed to convert CSS property to camelCase | ||
| * | ||
| * @param {string} cssProperty | ||
| * @returns {string} camelCase version of CSS property | ||
| */ | ||
| function convertToCamelCase(cssProperty) { | ||
| if (!cssProperty.includes('-')) { | ||
| return cssProperty; | ||
| } | ||
| const splittedProperty = cssProperty.split('-'); | ||
| const firstPart = splittedProperty[0]; | ||
| const secondPart = splittedProperty[1]; | ||
| return `${firstPart}${secondPart[0].toUpperCase()}${secondPart.slice(1)}`; | ||
| } | ||
|
|
||
| const shouldDebug = !!(cssPropertyName === 'debug' && cssPropertyValue); | ||
|
|
||
| const propToValueMap = new Map(); | ||
|
|
||
| /** | ||
| * UBO spoof-css analog has it's own args sequence: | ||
| * (selectors, ...arguments) | ||
| * arguments contains property-name/property-value pairs, all separated by commas | ||
| * | ||
| * example.com##+js(spoof-css, a[href="x.com"]\, .ads\, .bottom, clip-path, none) | ||
| * example.com##+js(spoof-css, .ad, clip-path, none, display, block) | ||
| * example.com##+js(spoof-css, .ad, debug, 1) | ||
| */ | ||
| if (uboAliases.includes(source.name)) { | ||
| const { args } = source; | ||
| let arrayOfProperties = []; | ||
| // Check if one before last argument is 'debug' | ||
| const isDebug = args.at(-2); | ||
| if (isDebug === 'debug') { | ||
| // If it's debug, then we need to skip first (selectors) and last two arguments | ||
| arrayOfProperties = args.slice(1, -2); | ||
| } else { | ||
| // If it's not debug, then we need to skip only first (selectors) argument | ||
| arrayOfProperties = args.slice(1); | ||
| } | ||
| for (let i = 0; i < arrayOfProperties.length; i += 2) { | ||
| if (arrayOfProperties[i] === '') { | ||
| break; | ||
| } | ||
| propToValueMap.set(convertToCamelCase(arrayOfProperties[i]), arrayOfProperties[i + 1]); | ||
| } | ||
| } else if (cssPropertyName && cssPropertyValue && !shouldDebug) { | ||
| propToValueMap.set(convertToCamelCase(cssPropertyName), cssPropertyValue); | ||
| } | ||
|
|
||
| const spoofStyle = (cssProperty, realCssValue) => { | ||
| return propToValueMap.has(cssProperty) | ||
| ? propToValueMap.get(cssProperty) | ||
| : realCssValue; | ||
| }; | ||
|
|
||
| const setRectValue = (rect, prop, value) => { | ||
| Object.defineProperty( | ||
| rect, | ||
| prop, | ||
| { | ||
| value: parseFloat(value), | ||
| }, | ||
| ); | ||
| }; | ||
|
|
||
| const getter = (target, prop, receiver) => { | ||
| hit(source); | ||
| if (prop === 'toString') { | ||
| return target.toString.bind(target); | ||
| } | ||
| return Reflect.get(target, prop, receiver); | ||
| }; | ||
|
|
||
| const getComputedStyleWrapper = (target, thisArg, args) => { | ||
| if (shouldDebug) { | ||
| debugger; // eslint-disable-line no-debugger | ||
| } | ||
| const style = Reflect.apply(target, thisArg, args); | ||
| if (!args[0].matches(selectors)) { | ||
| return style; | ||
| } | ||
| const proxiedStyle = new Proxy(style, { | ||
| get(target, prop) { | ||
| const CSSStyleProp = target[prop]; | ||
|
|
||
| if (typeof CSSStyleProp !== 'function') { | ||
| return spoofStyle(prop, CSSStyleProp || ''); | ||
| } | ||
|
|
||
| if (prop !== 'getPropertyValue') { | ||
| return CSSStyleProp.bind(target); | ||
| } | ||
|
|
||
| const getPropertyValueFunc = new Proxy(CSSStyleProp, { | ||
| apply(target, thisArg, args) { | ||
| const cssName = args[0]; | ||
| const cssValue = thisArg[cssName]; | ||
| return spoofStyle(cssName, cssValue); | ||
| }, | ||
| get: getter, | ||
| }); | ||
|
|
||
| return getPropertyValueFunc; | ||
| }, | ||
| getOwnPropertyDescriptor(target, prop) { | ||
| if (propToValueMap.has(prop)) { | ||
| return { | ||
| configurable: true, | ||
| enumerable: true, | ||
| value: propToValueMap.get(prop), | ||
| writable: true, | ||
| }; | ||
| } | ||
| return Reflect.getOwnPropertyDescriptor(target, prop); | ||
| }, | ||
| }); | ||
| hit(source); | ||
| return proxiedStyle; | ||
| }; | ||
|
|
||
| const getComputedStyleHandler = { | ||
| apply: getComputedStyleWrapper, | ||
| get: getter, | ||
| }; | ||
|
|
||
| window.getComputedStyle = new Proxy(window.getComputedStyle, getComputedStyleHandler); | ||
|
|
||
| const getBoundingClientRectWrapper = (target, thisArg, args) => { | ||
| if (shouldDebug) { | ||
| debugger; // eslint-disable-line no-debugger | ||
| } | ||
| const rect = Reflect.apply(target, thisArg, args); | ||
| if (!thisArg.matches(selectors)) { | ||
| return rect; | ||
| } | ||
|
|
||
| const { | ||
| top, | ||
| bottom, | ||
| height, | ||
| width, | ||
| left, | ||
| right, | ||
| } = rect; | ||
|
|
||
| const newDOMRect = new window.DOMRect(rect.x, rect.y, top, bottom, width, height, left, right); | ||
|
|
||
| if (propToValueMap.has('top')) { | ||
| setRectValue(newDOMRect, 'top', propToValueMap.get('top')); | ||
| } | ||
| if (propToValueMap.has('bottom')) { | ||
| setRectValue(newDOMRect, 'bottom', propToValueMap.get('bottom')); | ||
| } | ||
| if (propToValueMap.has('left')) { | ||
| setRectValue(newDOMRect, 'left', propToValueMap.get('left')); | ||
| } | ||
| if (propToValueMap.has('right')) { | ||
| setRectValue(newDOMRect, 'right', propToValueMap.get('right')); | ||
| } | ||
| if (propToValueMap.has('height')) { | ||
| setRectValue(newDOMRect, 'height', propToValueMap.get('height')); | ||
| } | ||
| if (propToValueMap.has('width')) { | ||
| setRectValue(newDOMRect, 'width', propToValueMap.get('width')); | ||
| } | ||
| hit(source); | ||
| return newDOMRect; | ||
| }; | ||
|
|
||
| const getBoundingClientRectHandler = { | ||
| apply: getBoundingClientRectWrapper, | ||
| get: getter, | ||
| }; | ||
|
|
||
| window.Element.prototype.getBoundingClientRect = new Proxy( | ||
| window.Element.prototype.getBoundingClientRect, | ||
| getBoundingClientRectHandler, | ||
| ); | ||
| } | ||
|
|
||
| spoofCSS.names = [ | ||
| 'spoof-css', | ||
| // aliases are needed for matching the related scriptlet converted into our syntax | ||
| 'spoof-css.js', | ||
| 'ubo-spoof-css.js', | ||
| 'ubo-spoof-css', | ||
| ]; | ||
|
|
||
| spoofCSS.injections = [ | ||
| hit, | ||
| ]; |
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