Commit 54c625c introduced regression

[alemonmk]

Description

Reflect.setPrototypeOf takes null for argument prototype. However, the altered setPrototypeOf() called getPrototypeOf() which throws on null without a null check. Which caused an Uncaught TypeError in near-membrane-shared and could be stopping Grafana's (affected my 11.0, wikipedia's 9.5 is fine) web UI from loading. Disabling the plugin will let Grafana load properly.

Expected Behaviour

Grafana UI should load properly.

Current Behaviour

Grafana stopped loading and showing error message: "Grafana has failed to load its application files"

Steps to Reproduce (for bugs)

1. Install CanvasBlocker
2. Visit a Grafana v11 installation

Your Environment

• CanvasBlocker Version used: 1.10.1
• Firefox version incl. 32- or 64-bit: 64-bit
• Operating System and version (desktop or mobile): Windows 10 21H2
• Installed addons: CanvasBlocker, uBlock Origin, Referer Modifier, LocalCDN, Cookie Quick Manager, DownThemAll!, Duplicate Tabs Closer, Firefox Multi-Account Containers, HyperChat and PocketTube

Your Settings

{
	"logLevel": 1,
	"urlSettings": [
		{
			"url": "challenges.cloudflare.com",
			"protectedCanvasPart": "nothing"
		}
	],
	"hiddenSettings": {
		"enableStackList": false,
		"protectedCanvasPart": false,
		"protectedAPIFeatures": false
	},
	"expandStatus": {
		"section_lists": true,
		"protectNavigator": true,
		"useAudioCache": false,
		"protectedCanvasPart": true,
		"protectAudio": false,
		"protectScreen": false
	},
	"displayHiddenSettings": true,
	"whiteList": "\n",
	"sessionWhiteList": "",
	"blackList": "",
	"blockMode": "fake",
	"protectedCanvasPart": "readout",
	"minFakeSize": 1,
	"maxFakeSize": 0,
	"rng": "nonPersistent",
	"protectedAPIFeatures": {},
	"useCanvasCache": true,
	"ignoreFrequentColors": 0,
	"minColors": 0,
	"fakeAlphaChannel": true,
	"webGLVendor": "",
	"webGLRenderer": "",
	"webGLUnmaskedVendor": "",
	"webGLUnmaskedRenderer": "",
	"persistentRndStorage": "",
	"persistentIncognitoRndStorage": "",
	"storePersistentRnd": false,
	"persistentRndClearIntervalValue": 0,
	"persistentRndClearIntervalUnit": "days",
	"lastPersistentRndClearing": 1719591123928,
	"sharePersistentRndBetweenDomains": false,
	"askOnlyOnce": "individual",
	"askDenyMode": "block",
	"showCanvasWhileAsking": true,
	"showNotifications": true,
	"highlightPageAction": "none",
	"highlightBrowserAction": "color",
	"displayBadge": false,
	"storeNotificationData": false,
	"storeImageForInspection": false,
	"ignoreList": "",
	"ignoredAPIs": {},
	"showCallingFile": false,
	"showCompleteCallingStack": false,
	"enableStackList": false,
	"stackList": "",
	"protectAudio": true,
	"audioFakeRate": "100",
	"audioNoiseLevel": "low",
	"useAudioCache": true,
	"audioUseFixedIndices": true,
	"audioFixedIndices": "6",
	"historyLengthThreshold": 2,
	"protectWindow": false,
	"allowWindowNameInFrames": false,
	"protectDOMRect": true,
	"domRectIntegerFactor": 4,
	"protectSVG": true,
	"protectTextMetrics": true,
	"blockDataURLs": true,
	"protectNavigator": false,
	"navigatorDetails": {},
	"protectScreen": true,
	"screenSize": "",
	"fakeMinimalScreenSize": true,
	"displayAdvancedSettings": true,
	"displayDescriptions": false,
	"theme": "auto",
	"showPresetsOnInstallation": true,
	"dontShowOptionsOnUpdate": false,
	"disruptSessionOnUpdate": false,
	"updatePending": false,
	"isStillDefault": false,
	"storageVersion": 1
}

[kkapsner]

3eedc7b7dc99f23c0db525b069a5cd5faaf5a75b should solve this problem. Please check with the latest alpha: https://canvasblocker.kkapsner.de/versions/?C=M;O=D

[alemonmk]

Hi @kkapsner, the fix works, thank you for the prompt response.

[KiARC]

Any timeframe of when this will make it to stable? Whitelisting the site in question (also a Grafana instance for me) doesn't fix it, so I'd love to know when this will be released.

[kkapsner]

I hope the next two week allow me to submit the next version.