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/*******************************************************************************
ηMatrix - a browser extension to black/white list requests.
Copyright (C) 2014-2019 Raymond Hill
Copyright (C) 2019-2020 Alessio Vanni
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 {http://www.gnu.org/licenses/}.
Home: https://libregit.spks.xyz/heckyel/ematrix
uMatrix Home: https://github.com/gorhill/uMatrix
*/
/* global chrome, ηMatrix */
'use strict';
/******************************************************************************/
(function() {
Cu.import('chrome://ematrix/content/lib/UriTools.jsm');
var ηm = ηMatrix;
ηm.pMatrix = new ηm.Matrix();
ηm.pMatrix.setSwitch('matrix-off', 'about-scheme', 1);
ηm.pMatrix.setSwitch('matrix-off', 'chrome-extension-scheme', 1);
ηm.pMatrix.setSwitch('matrix-off', 'chrome-scheme', 1);
ηm.pMatrix.setSwitch('matrix-off', 'moz-extension-scheme', 1);
ηm.pMatrix.setSwitch('matrix-off', 'opera-scheme', 1);
// https://discourse.mozilla.org/t/support-umatrix/5131/157
ηm.pMatrix.setSwitch('matrix-off', 'wyciwyg-scheme', 1);
ηm.pMatrix.setSwitch('matrix-off', 'behind-the-scene', 1);
ηm.pMatrix.setSwitch('referrer-spoof', 'behind-the-scene', 2);
ηm.pMatrix.setSwitch('https-strict', 'behind-the-scene', 2);
// Global rules
ηm.pMatrix.setSwitch('referrer-spoof', '*', 1);
ηm.pMatrix.setSwitch('noscript-spoof', '*', 1);
ηm.pMatrix.setCell('*', '*', '*', ηm.Matrix.Red);
ηm.pMatrix.setCell('*', '*', 'script', ηm.Matrix.Red);
ηm.pMatrix.setCell('*', '*', 'css', ηm.Matrix.Green);
ηm.pMatrix.setCell('*', '*', 'image', ηm.Matrix.Green);
ηm.pMatrix.setCell('*', '*', 'frame', ηm.Matrix.Red);
// 1st-party rules
ηm.pMatrix.setCell('*', '1st-party', '*', ηm.Matrix.Green);
ηm.pMatrix.setCell('*', '1st-party', 'frame', ηm.Matrix.Green);
ηm.tMatrix = new ηm.Matrix();
ηm.tMatrix.assign(ηm.pMatrix);
})();
/******************************************************************************/
ηMatrix.hostnameFromURL = function(url) {
var hn = UriTools.hostnameFromURI(url);
return hn === '' ? '*' : hn;
};
ηMatrix.scopeFromURL = ηMatrix.hostnameFromURL;
/******************************************************************************/
ηMatrix.evaluateURL = function(srcURL, desHostname, type) {
var srcHostname = UriTools.hostnameFromURI(srcURL);
return this.tMatrix.evaluateCellZXY(srcHostname, desHostname, type);
};
/******************************************************************************/
// Whitelist something
ηMatrix.whitelistTemporarily = function(srcHostname, desHostname, type) {
this.tMatrix.whitelistCell(srcHostname, desHostname, type);
};
ηMatrix.whitelistPermanently = function(srcHostname, desHostname, type) {
if ( this.pMatrix.whitelistCell(srcHostname, desHostname, type) ) {
this.saveMatrix();
}
};
/******************************************************************************/
// Auto-whitelisting the `all` cell is a serious action, hence this will be
// done only from within a scope.
ηMatrix.autoWhitelistAllTemporarily = function(pageURL) {
var srcHostname = UriTools.hostnameFromURI(pageURL);
if ( this.mustBlock(srcHostname, '*', '*') === false ) {
return false;
}
this.tMatrix.whitelistCell(srcHostname, '*', '*');
return true;
};
/******************************************************************************/
// Blacklist something
ηMatrix.blacklistTemporarily = function(srcHostname, desHostname, type) {
this.tMatrix.blacklistCell(srcHostname, desHostname, type);
};
ηMatrix.blacklistPermanently = function(srcHostname, desHostname, type) {
if ( this.pMatrix.blacklist(srcHostname, desHostname, type) ) {
this.saveMatrix();
}
};
/******************************************************************************/
// Remove something from both black and white lists.
ηMatrix.graylistTemporarily = function(srcHostname, desHostname, type) {
this.tMatrix.graylistCell(srcHostname, desHostname, type);
};
ηMatrix.graylistPermanently = function(srcHostname, desHostname, type) {
if ( this.pMatrix.graylistCell(srcHostname, desHostname, type) ) {
this.saveMatrix();
}
};
/******************************************************************************/
// TODO: Should type be transposed by the caller or in place here? Not an
// issue at this point but to keep in mind as this function is called
// more and more from different places.
ηMatrix.filterRequest = function(fromURL, type, toURL) {
// Block request?
var srcHostname = this.hostnameFromURL(fromURL);
var desHostname = this.hostnameFromURL(toURL);
// If no valid hostname, use the hostname of the source.
// For example, this case can happen with data URI.
if ( desHostname === '' ) {
desHostname = srcHostname;
}
// Blocked by matrix filtering?
return this.mustBlock(srcHostname, desHostname, type);
};
/******************************************************************************/
ηMatrix.mustBlock = function(srcHostname, desHostname, type) {
return this.tMatrix.mustBlock(srcHostname, desHostname, type);
};
ηMatrix.mustAllow = function(srcHostname, desHostname, type) {
return this.mustBlock(srcHostname, desHostname, type) === false;
};
/******************************************************************************/
// Commit temporary permissions.
ηMatrix.commitPermissions = function(persist) {
this.pMatrix.assign(this.tMatrix);
if ( persist ) {
this.saveMatrix();
}
};
/******************************************************************************/
// Reset all rules to their default state.
ηMatrix.revertAllRules = function() {
this.tMatrix.assign(this.pMatrix);
};
/******************************************************************************/
ηMatrix.turnOff = function() {
vAPI.app.start();
};
ηMatrix.turnOn = function() {
vAPI.app.stop();
};
/******************************************************************************/
ηMatrix.formatCount = function(count) {
if ( typeof count !== 'number' ) {
return '';
}
var s = count.toFixed(0);
if ( count >= 1000 ) {
if ( count < 10000 ) {
s = '>' + s.slice(0,1) + 'K';
} else if ( count < 100000 ) {
s = s.slice(0,2) + 'K';
} else if ( count < 1000000 ) {
s = s.slice(0,3) + 'K';
} else if ( count < 10000000 ) {
s = s.slice(0,1) + 'M';
} else {
s = s.slice(0,-6) + 'M';
}
}
return s;
};
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