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-rw-r--r--toolkit/jetpack/sdk/util/match-pattern.js113
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diff --git a/toolkit/jetpack/sdk/util/match-pattern.js b/toolkit/jetpack/sdk/util/match-pattern.js
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+module.metadata = {
+ "stability": "unstable"
+};
+
+const { URL } = require('../url');
+const cache = {};
+
+function MatchPattern(pattern) {
+ if (cache[pattern]) return cache[pattern];
+
+ if (typeof pattern.test == "function") {
+ // For compatibility with -moz-document rules, we require the RegExp's
+ // global, ignoreCase, and multiline flags to be set to false.
+ if (pattern.global) {
+ throw new Error("A RegExp match pattern cannot be set to `global` " +
+ "(i.e. //g).");
+ }
+ if (pattern.multiline) {
+ throw new Error("A RegExp match pattern cannot be set to `multiline` " +
+ "(i.e. //m).");
+ }
+
+ this.regexp = pattern;
+ }
+ else {
+ let firstWildcardPosition = pattern.indexOf("*");
+ let lastWildcardPosition = pattern.lastIndexOf("*");
+ if (firstWildcardPosition != lastWildcardPosition)
+ throw new Error("There can be at most one '*' character in a wildcard.");
+
+ if (firstWildcardPosition == 0) {
+ if (pattern.length == 1)
+ this.anyWebPage = true;
+ else if (pattern[1] != ".")
+ throw new Error("Expected a *.<domain name> string, got: " + pattern);
+ else
+ this.domain = pattern.substr(2);
+ }
+ else {
+ if (pattern.indexOf(":") == -1) {
+ throw new Error("When not using *.example.org wildcard, the string " +
+ "supplied is expected to be either an exact URL to " +
+ "match or a URL prefix. The provided string ('" +
+ pattern + "') is unlikely to match any pages.");
+ }
+
+ if (firstWildcardPosition == -1)
+ this.exactURL = pattern;
+ else if (firstWildcardPosition == pattern.length - 1)
+ this.urlPrefix = pattern.substr(0, pattern.length - 1);
+ else {
+ throw new Error("The provided wildcard ('" + pattern + "') has a '*' " +
+ "in an unexpected position. It is expected to be the " +
+ "first or the last character in the wildcard.");
+ }
+ }
+ }
+
+ cache[pattern] = this;
+}
+
+MatchPattern.prototype = {
+ test: function MatchPattern_test(urlStr) {
+ try {
+ var url = URL(urlStr);
+ }
+ catch (err) {
+ return false;
+ }
+
+ // Test the URL against a RegExp pattern. For compatibility with
+ // -moz-document rules, we require the RegExp to match the entire URL,
+ // so we not only test for a match, we also make sure the matched string
+ // is the entire URL string.
+ //
+ // Assuming most URLs don't match most match patterns, we call `test` for
+ // speed when determining whether or not the URL matches, then call `exec`
+ // for the small subset that match to make sure the entire URL matches.
+ if (this.regexp && this.regexp.test(urlStr) &&
+ this.regexp.exec(urlStr)[0] == urlStr)
+ return true;
+
+ if (this.anyWebPage && /^(https?|ftp)$/.test(url.scheme))
+ return true;
+
+ if (this.exactURL && this.exactURL == urlStr)
+ return true;
+
+ // Tests the urlStr against domain and check if
+ // wildcard submitted (*.domain.com), it only allows
+ // subdomains (sub.domain.com) or from the root (http://domain.com)
+ // and reject non-matching domains (otherdomain.com)
+ // bug 856913
+ if (this.domain && url.host &&
+ (url.host === this.domain ||
+ url.host.slice(-this.domain.length - 1) === "." + this.domain))
+ return true;
+
+ if (this.urlPrefix && 0 == urlStr.indexOf(this.urlPrefix))
+ return true;
+
+ return false;
+ },
+
+ toString: () => '[object MatchPattern]'
+};
+
+exports.MatchPattern = MatchPattern;