/usr/share/xul-ext/lightbeam/resources/lightbeam/lib/shared/policy.js is in xul-ext-lightbeam 1.2.1+dfsg-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* 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/. */
/* global require, exports */
'use strict';
const {
Cc, Ci
} = require('chrome');
const {
Class
} = require('sdk/core/heritage');
const CP_NS = require('sdk/core/namespace').ns();
const {
ensure
} = require('sdk/system/unload');
const {
validateOptions
} = require('sdk/deprecated/api-utils');
const {
id: ADDON_ID
} = require('sdk/self');
const xpcom = require('sdk/platform/xpcom');
const CM = Cc["@mozilla.org/categorymanager;1"]
.getService(Ci.nsICategoryManager);
const ACCEPT = exports.ACCEPT = Ci.nsIContentPolicy.ACCEPT;
const REJECT = exports.REJECT = Ci.nsIContentPolicy.REJECT_REQUEST;
const accept = function () ACCEPT;
let ContentPolicy_ID = 0;
const RULES = {
description: {
map: function (v) {
return v ? v : '';
},
is: ['string']
},
contract: {
map: function (v) {
if (v === undefined) {
v = '@erikvold.com/content-policy.' + ADDON_ID + ';' + ContentPolicy_ID++;
}
return v;
},
is: ['string']
},
entry: {
is: ['string', 'undefined']
},
shouldLoad: {
is: ['function', 'undefined']
},
shouldProcess: {
is: ['function', 'undefined']
},
};
function getType(aType) {
switch (aType) {
case Ci.nsIContentPolicy.TYPE_SCRIPT:
return 'script';
case Ci.nsIContentPolicy.TYPE_IMAGE:
return 'image';
case Ci.nsIContentPolicy.TYPE_STYLESHEET:
return 'stylesheet';
case Ci.nsIContentPolicy.TYPE_OBJECT:
return 'object';
case Ci.nsIContentPolicy.TYPE_DOCUMENT:
return 'document';
case Ci.nsIContentPolicy.TYPE_SUBDOCUMENT:
return 'subdocument';
case Ci.nsIContentPolicy.TYPE_REFRESH:
return 'refresh';
case Ci.nsIContentPolicy.TYPE_XBL:
return 'xbl';
case Ci.nsIContentPolicy.TYPE_XMLHTTPREQUEST:
return 'xhr';
case Ci.nsIContentPolicy.TYPE_PING:
return 'ping';
// TODO: support more types
}
return 'other';
}
const getTypeMemod = memoize(getType, 12, 1);
function makeDetails(aContentType, aContentLocation, aRequestOrigin, aContext, aMimeTypeGuess) {
return {
type: getTypeMemod(aContentType),
location: aContentLocation,
origin: aRequestOrigin.spec,
context: null, // TODO: support this in a safe way somehow..
mimeTypeGuess: String(aMimeTypeGuess)
};
}
let ContentPolicy = exports.ContentPolicy = Class({
initialize: function (options) {
const self = this;
options = CP_NS(self).options = validateOptions(options, RULES);
CP_NS(self).shouldLoad = options.shouldLoad || accept;
CP_NS(self).shouldProcess = options.shouldProcess || accept;
let factory = CP_NS(this).factory = xpcom.Factory({
Component: getProvider(self),
description: options.description,
contract: options.contract
});
let entry = options.entry || options.contract;
CM.addCategoryEntry('content-policy', entry, factory.contract, false, true);
ensure(this, 'destroy');
},
destroy: function () {
// already destroyed?
if (!CP_NS(this).options)
return;
let options = CP_NS(this).options;
CP_NS(this).options = null;
CP_NS(this).shouldLoad = accept;
CP_NS(this).shouldProcess = accept;
CM.deleteCategoryEntry('content-policy', options.entry || options.contract, false);
}
});
function getProvider(self) {
return Class({
extends: xpcom.Unknown,
interfaces: ['nsIContentPolicy'],
shouldLoad: function (aContentType, aContentLocation, aRequestOrigin, aContext, aMimeTypeGuess, aExtra) {
let load = CP_NS(self).shouldLoad(makeDetails.apply(null, arguments));
return (load == REJECT || (!load && load !== undefined)) ? REJECT : ACCEPT;
},
shouldProcess: function (aContentType, aContentLocation, aRequestOrigin, aContext, aMimeTypeGuess, aExtra) {
let load = CP_NS(self).shouldProcess(makeDetails.apply(null, arguments));
return (load == REJECT || (!load && load !== undefined)) ? REJECT : ACCEPT;
}
});
}
function memoize(func) {
let cache = Object.create(null);
return function (a) {
let key = a.toString();
if (!(key in cache)) {
cache[key] = func.call(null, a);
}
return cache[key];
};
}
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