Updated extensions:

 * Upgraded Privacy Redirect to 1.1.49 and configured to use the 10 most reliable invidious instances
 * Removed ViewTube
 * Added torproxy@icecat.gnu based on 'Proxy toggle' extension
 * Added jShelter 0.11.1
 * Upgraded LibreJS to 7.21.0
 * Upgraded HTTPS Everywhere to 2021.7.13
 * Upgraded SubmitMe to 1.9

1 files changed, 133 insertions, 0 deletions

diff --git a/data/extensions/jsr@javascriptrestrictor/wrappingS-MEDIA-CAPABILITIES.js b/data/extensions/jsr@javascriptrestrictor/wrappingS-MEDIA-CAPABILITIES.js
new file mode 100644
index 0000000..2123df7
--- /dev/null
+++ b/data/extensions/jsr@javascriptrestrictor/wrappingS-MEDIA-CAPABILITIES.js
@@ -0,0 +1,133 @@
+/** \file
+ * \brief This file contains wrappers for the Media Capabilities APIs
+ *
+ * \see https://developer.mozilla.org/en-US/docs/Web/API/Media_Capabilities_API
+ *
+ *  \author Copyright (C) 2022  Libor Polcak
+ *
+ *  \license SPDX-License-Identifier: GPL-3.0-or-later
+ */
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+//
+
+/** \file
+ * \ingroup wrappers
+ *
+ * `` provides access to `MediaKeySystemAccess` object that
+ * allows to query supported codecs and other informations about the system.
+ *
+ * For example, visit https://www.fit.vutbr.cz/~polcak/jsr/hdcp/ and try a different browser or
+ * computer.
+ *
+ * \see https://w3c.github.io/media-capabilities/ 
+ *
+ * We provide two modes of protection:
+ *
+ * 1. Strict approach prevents accessing the API.
+ * 2. Farbling approach changes the output to a non-existing codec with 12.5% probability.
+ */
+
+/*
+ * Create private namespace
+ */
+(function() {
+	var helping_code = `var approach = args[0];`;
+	function prepareConfig(config) {
+		let changed = {
+			type: config.type,
+		};
+		if (config.audio) {
+			changed.audio = {
+				contentType: prng().toString(),
+				channels: config.audio.channels,
+				bitrate: config.audio.bitrate,
+				samplerate: config.audio.samplerate,
+			};
+		}
+		else {
+			changed.video = {
+				contentType: prng().toString(),
+				width: config.video.width,
+				height: config.video.height,
+				bitrate: config.video.bitrate,
+				framerate: config.video.framerate,
+			};
+		}
+		return forPage(changed);
+	}
+	var wrappers = [
+		{
+			parent_object: "MediaCapabilities.prototype",
+			parent_object_property: "encodingInfo",
+			wrapped_objects: [{
+				original_name: "MediaCapabilities.prototype.encodingInfo",
+				wrapped_name: "origF",
+			}],
+			helping_code: helping_code + prepareConfig,
+			wrapping_function_args: "config",
+			wrapping_function_body: `
+					if (approach == 2) { 
+						return new Promise(() => {}); // Never resolves
+					}
+					else if (approach == 1) { 
+						return origF.call(this, prepareConfig(config));
+					}
+					else {
+						let media = config.audio || config.video;
+						var normalized = media.contentType.replace(/\s|\\n|\\t|\\r/g, '');
+						var medcap_prng = alea(domainHash, "MediaCapabilities.prototype.encodingInfo", normalized);
+						var rnd = medcap_prng.get_bits(3);
+						if (rnd == 0) {
+							return  origF.call(this, prepareConfig(config));
+						}
+						else {
+							return origF.call(this, config);
+						}
+					}
+				`,
+		},
+		{
+			parent_object: "MediaCapabilities.prototype",
+			parent_object_property: "decodingInfo",
+			wrapped_objects: [{
+				original_name: "MediaCapabilities.prototype.decodingInfo",
+				wrapped_name: "origF",
+			}],
+			helping_code: helping_code + prepareConfig,
+			wrapping_function_args: "config",
+			wrapping_function_body: `
+					if (approach == 2) { 
+						return new Promise(() => {}); // Never resolves
+					}
+					else if (approach == 1) { 
+						return origF.call(this, prepareConfig(config));
+					}
+					else {
+						let media = config.audio || config.video;
+						var normalized = media.contentType.replace(/\s|\\n|\\t|\\r/g, '');
+						var medcap_prng = alea(domainHash, "MediaCapabilities.prototype.decodingInfo", normalized);
+						var rnd = medcap_prng.get_bits(3);
+						if (rnd == 0) {
+							return  origF.call(this, prepareConfig(config));
+						}
+						else {
+							return origF.call(this, config);
+						}
+					}
+				`,
+		},
+	]
+	add_wrappers(wrappers);
+})()