Add option to whitelist domain from containment (#108)

* Add option to whitelist domain from containment

* Use textarea for input of whitelisted domains

Before we used a simple text input, which wasn't able to contain
multiple lines

background.js

@@ -53,6 +53,7 @@ const canceledRequests = {};
 const tabsWaitingToLoad = {};
 const googleHostREs = [];
 const youtubeHostREs = [];
+const whitelistedHostREs = [];
 
 async function isMACAddonEnabled () {
   try {
@@ -161,6 +162,15 @@ function generateGoogleHostREs () {
   }
 }
 
+function generateWhitelistedHostREs () {
+ if (whitelistedHostREs.length != 0) {return;}
+  const matchOperatorsRegex = /[|\\{}()[\]^$+*?.-]/g;
+  for (let whitelistedDomain of extensionSettings.whitelist) {
+    whitelistedDomain = whitelistedDomain.replace(matchOperatorsRegex, '\\$&');
+    whitelistedHostREs.push(new RegExp(`(^|\\.)${whitelistedDomain}$`));
+  }
+}
+
 async function loadExtensionSettings () {
   extensionSettings = await browser.storage.sync.get();
 }
@@ -264,6 +274,17 @@ function isYouTubeURL (url) {
   return false;
 }
 
+function isWhitelistedURL (url) {
+  generateWhitelistedHostREs();
+  const parsedUrl = new URL(url);
+  for (let whitelistedHostRE of whitelistedHostREs) {
+    if (whitelistedHostRE.test(parsedUrl.host)) {
+      return true;
+    }
+  }
+  return false;
+}
+
 function isSearchPageURL (url) {
   const parsedUrl = new URL(url);
   return parsedUrl.pathname.startsWith('/search');
@@ -321,6 +342,10 @@ function shouldContainInto (url, tab) {
     handleUrl = false;
   }
 
+  if (handleUrl && extensionSettings.whitelist.length!=0 && isWhitelistedURL(url)) {
+    handleUrl = false;
+  }
+
   if (handleUrl) {
     if (tab.cookieStoreId !== googleCookieStoreId) {
       if (tab.cookieStoreId !== "firefox-default" && extensionSettings.dont_override_containers) {

options.html

@@ -62,6 +62,16 @@ <h1>Settings</h1>
 			</label>
 		</p>
 
+		<p>
+			<label>
+				<textarea id="whitelist" value="" cols="80">
+				</textarea>
+				<br>
+				Whitelisted google urls<br>
+				<em>(Use one url per line.)</em>
+			</label>
+		</p>
+
 		<button type="submit">Save settings</button>
 
 		<hr>

options.js

@@ -1,3 +1,24 @@
+function validate_whitelist() {
+    domain_regex = /^(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+[a-z0-9][a-z0-9-]{0,61}[a-z0-9]$/;
+    whitelist_element = document.querySelector("#whitelist");
+    if (whitelist_element.value == "") {return [];}
+    whitelist_domains = whitelist_element.value.split("\n");
+    validated_domains = [];
+    for (whitelist_domain of whitelist_domains) {
+	if (whitelist_domain == "") {continue;}
+	if (whitelist_domain.match(domain_regex)) {validated_domains.push(whitelist_domain); continue;}
+	alert("'" + whitelist_domain + "' is not a valid domain.");
+	return [];
+    }
+    return validated_domains;
+}
+
+function fill_whitelist_option(stored_whitelist) {
+    whitelist_text = stored_whitelist.join("\n");
+    document.querySelector("#whitelist").value = whitelist_text ? whitelist_text : "";
+}
+
+
 function onOptionsPageSave(e)
 {
 	e.preventDefault();
@@ -9,7 +30,8 @@ function onOptionsPageSave(e)
 		"ignore_prefpages": document.querySelector("#ignore_prefpages").checked,
 		"ignore_maps": document.querySelector("#ignore_maps").checked,
 		"ignore_flights": document.querySelector("#ignore_flights").checked,
-		"dont_override_containers": document.querySelector("#dont_override_containers").checked
+	        "dont_override_containers": document.querySelector("#dont_override_containers").checked,
+	        "whitelist": validate_whitelist()
 	});
 
 	browser.runtime.reload();
@@ -27,6 +49,7 @@ function onOptionsPageLoaded()
 		document.querySelector("#ignore_maps").checked = res.ignore_maps || false;
 		document.querySelector("#ignore_flights").checked = res.ignore_flights || false;
 		document.querySelector("#dont_override_containers").checked = res.dont_override_containers || false;
+	        fill_whitelist_option(res.whitelist);
 	});
 }