Added notice for privacy.resistFingerprinting

Fixes #427

_locales/de/messages.json

@@ -83,6 +83,10 @@
 		"message": "Bei Aktualisierung nicht wieder anzeigen.",
 		"description": ""
 	},
+	"resistFingerprintingNotice": {
+		"message": "Sie haben privacy.resistFingerprinting aktiviert. Dies verändert das Verhalten von CanvasBlocker ein wenig. Weitere Informationen finden Sie {link:hier:https://github.com/kkapsner/CanvasBlocker/issues/158} und {link:hier:https://github.com/ghacksuserjs/ghacks-user.js/issues/767}.",
+		"description": ""
+	},
 	"openInTab": {
 		"message": "In separatem Tab öffnen",
 		"description": ""
@@ -1543,4 +1547,4 @@
 		"message": "Der window-API-Schutz macht reCAPTCHA unbenutzbar. Diese Voreinstellung erlaubt die Benutzung der window.name-API in eingebetteten Seiten. Dadurch funktioniert es wieder.",
 		"description": ""
 	}
-}
+}

_locales/en/messages.json

@@ -88,6 +88,10 @@
 		"message": "Don't show up again after update.",
 		"description": ""
 	},
+	"resistFingerprintingNotice": {
+		"message": "You have privacy.resistFingerprinting enabled. This slightly changes the behaviour of CanvasBlocker. See further information {link:here:https://github.com/kkapsner/CanvasBlocker/issues/158} and {link:here:https://github.com/ghacksuserjs/ghacks-user.js/issues/767}.",
+		"description": ""
+	},
 	"openInTab": {
 		"message": "Open in separate tab",
 		"description": ""

lib/extension.js

@@ -27,6 +27,38 @@
 		return id;
 	};
 	
+	scope.parseTranslation = function parseTranslation(message){
+		const container = document.createDocumentFragment();
+		
+		message.split(/(\{[^}]+\})/).forEach(function(part){
+			if (part.startsWith("{") && part.endsWith("}")){
+				part = part.substring(1, part.length - 1);
+				const args = part.split(":");
+				switch (args[0]){
+					case "image": {
+						const image = document.createElement("img");
+						image.className = "noticeImage";
+						image.src = args.slice(1).join(":");
+						container.appendChild(image);
+						break;
+					}
+					case "link": {
+						const link = document.createElement("a");
+						link.target = "_blank";
+						link.textContent = args[1];
+						link.href = args.slice(2).join(":");
+						container.appendChild(link);
+						break;
+					}
+				}
+			}
+			else {
+				container.appendChild(document.createTextNode(part));
+			}
+		});
+		return container;
+	};
+	
 	scope.extensionID = browserAvailable? browser.extension.getURL(""): "extensionID";
 	
 	scope.inIncognitoContext = browserAvailable? browser.extension.inIncognitoContext: false;

manifest.json

@@ -91,7 +91,8 @@
 		"webRequest",
 		"webRequestBlocking",
 		"contextualIdentities",
-		"cookies"
+		"cookies",
+		"privacy"
 	],
 	
 	"applications": {

options/options.css

@@ -37,6 +37,12 @@ header .bookmarkNotice .dontShowOptionsOnUpdate input {
 	vertical-align: sub;
 }
 
+.resistFingerprintingNotice {
+	margin: 0.5em 0;
+	padding: 0.5em;
+	border: 1px solid var(--input-error-background-color);
+}
+
 .settings {
 	width: 100%;
 	border-spacing: 0;

options/options.js

@@ -228,6 +228,29 @@
 	groupTabs.classList = "groupTabs";
 	document.body.appendChild(groupTabs);
 	
+	if (
+		browser.privacy &&
+		browser.privacy.websites &&
+		browser.privacy.websites.resistFingerprinting &&
+		browser.privacy.websites.resistFingerprinting.get
+	){
+		browser.privacy.websites.resistFingerprinting.get({}).then(function({value}){
+			if (value){
+				const rfpNotice = document.createElement("div");
+				rfpNotice.className = "resistFingerprintingNotice";
+				rfpNotice.appendChild(
+					extension.parseTranslation(
+						extension.getTranslation("resistFingerprintingNotice")
+					)
+				);
+				document.body.insertBefore(rfpNotice, groupTabs);
+			}
+			return undefined;
+		}).catch(function(error){
+			logging.warning("Unable to read resistFingerprinting:", error);
+		});
+	}
+	
 	const groups = document.createElement("ul");
 	groups.className = "groups";
 	groupTabs.appendChild(groups);

options/presets.js

@@ -141,32 +141,7 @@
 		if (noticeText){
 			const notice = document.createElement("div");
 			notice.className = noticeName + " notice";
-			noticeText.split(/(\{[^}]+\})/).forEach(function(part){
-				if (part.startsWith("{") && part.endsWith("}")){
-					part = part.substring(1, part.length - 1);
-					const args = part.split(":");
-					switch (args[0]){
-						case "image": {
-							const image = document.createElement("img");
-							image.className = "noticeImage";
-							image.src = args[1];
-							notice.appendChild(image);
-							break;
-						}
-						case "link": {
-							const link = document.createElement("a");
-							link.target = "_blank";
-							link.textContent = args[1];
-							link.href = args[2];
-							notice.appendChild(link);
-							break;
-						}
-					}
-				}
-				else {
-					notice.appendChild(document.createTextNode(part));
-				}
-			});
+			notice.appendChild(extension.parseTranslation(noticeText));
 			
 			head.appendChild(notice);
 		}