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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/.
// XXX: This should all be moved into the dbservice class so it happens
// in the background thread.
/**
* Abstract base class for a lookup table.
* @construction
*/
this.UrlClassifierTable = function UrlClassifierTable() {
this.debugZone = "urlclassifier-table";
this.name = '';
this.needsUpdate = false;
this.enchashDecrypter_ = new PROT_EnchashDecrypter();
this.wrappedJSObject = this;
}
UrlClassifierTable.prototype.QueryInterface = function(iid) {
if (iid.equals(Components.interfaces.nsISupports) ||
iid.equals(Components.interfaces.nsIUrlClassifierTable))
return this;
throw Components.results.NS_ERROR_NO_INTERFACE;
}
/**
* Subclasses need to implement this method.
*/
UrlClassifierTable.prototype.exists = function(url, callback) {
throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
}
/////////////////////////////////////////////////////////////////////
// Url table implementation
this.UrlClassifierTableUrl = function UrlClassifierTableUrl() {
UrlClassifierTable.call(this);
}
UrlClassifierTableUrl.inherits = function(parentCtor) {
var tempCtor = function(){};
tempCtor.prototype = parentCtor.prototype;
this.superClass_ = parentCtor.prototype;
this.prototype = new tempCtor();
}
UrlClassifierTableUrl.inherits(UrlClassifierTable);
/**
* Look up a URL in a URL table
*/
UrlClassifierTableUrl.prototype.exists = function(url, callback) {
// nsIUrlClassifierUtils.canonicalizeURL is the old way of canonicalizing a
// URL. Unfortunately, it doesn't normalize numeric domains so alternate IP
// formats (hex, octal, etc) won't trigger a match.
// this.enchashDecrypter_.getCanonicalUrl does the right thing and
// normalizes a URL to 4 decimal numbers, but the update server may still be
// giving us encoded IP addresses. So to be safe, we check both cases.
var urlUtils = Cc["@mozilla.org/url-classifier/utils;1"]
.getService(Ci.nsIUrlClassifierUtils);
var oldCanonicalized = urlUtils.canonicalizeURL(url);
var canonicalized = this.enchashDecrypter_.getCanonicalUrl(url);
G_Debug(this, "Looking up: " + url + " (" + oldCanonicalized + " and " +
canonicalized + ")");
(new ExistsMultiQuerier([oldCanonicalized, canonicalized],
this.name,
callback)).run();
}
/////////////////////////////////////////////////////////////////////
// Domain table implementation
this.UrlClassifierTableDomain = function UrlClassifierTableDomain() {
UrlClassifierTable.call(this);
this.debugZone = "urlclassifier-table-domain";
this.ioService_ = Cc["@mozilla.org/network/io-service;1"]
.getService(Ci.nsIIOService);
}
UrlClassifierTableDomain.inherits = function(parentCtor) {
var tempCtor = function(){};
tempCtor.prototype = parentCtor.prototype;
this.superClass_ = parentCtor.prototype;
this.prototype = new tempCtor();
}
UrlClassifierTableDomain.inherits(UrlClassifierTable);
/**
* Look up a URL in a domain table
* We also try to lookup domain + first path component (e.g.,
* www.mozilla.org/products).
*
* @returns Boolean true if the url domain is in the table
*/
UrlClassifierTableDomain.prototype.exists = function(url, callback) {
var canonicalized = this.enchashDecrypter_.getCanonicalUrl(url);
var urlObj = this.ioService_.newURI(canonicalized, null, null);
var host = '';
try {
host = urlObj.host;
} catch (e) { }
var hostComponents = host.split(".");
// Try to get the path of the URL. Pseudo urls (like wyciwyg:) throw
// errors when trying to convert to an nsIURL so we wrap in a try/catch
// block.
var path = ""
try {
urlObj.QueryInterface(Ci.nsIURL);
path = urlObj.filePath;
} catch (e) { }
var pathComponents = path.split("/");
// We don't have a good way map from hosts to domains, so we instead try
// each possibility. Could probably optimize to start at the second dot?
var possible = [];
for (var i = 0; i < hostComponents.length - 1; i++) {
host = hostComponents.slice(i).join(".");
possible.push(host);
// The path starts with a "/", so we are interested in the second path
// component if it is available
if (pathComponents.length >= 2 && pathComponents[1].length > 0) {
host = host + "/" + pathComponents[1];
possible.push(host);
}
}
// Run the possible domains against the db.
(new ExistsMultiQuerier(possible, this.name, callback)).run();
}
/////////////////////////////////////////////////////////////////////
// Enchash table implementation
this.UrlClassifierTableEnchash = function UrlClassifierTableEnchash() {
UrlClassifierTable.call(this);
this.debugZone = "urlclassifier-table-enchash";
}
UrlClassifierTableEnchash.inherits = function(parentCtor) {
var tempCtor = function(){};
tempCtor.prototype = parentCtor.prototype;
this.superClass_ = parentCtor.prototype;
this.prototype = new tempCtor();
}
UrlClassifierTableEnchash.inherits(UrlClassifierTable);
/**
* Look up a URL in an enchashDB. We try all sub domains (up to MAX_DOTS).
*/
UrlClassifierTableEnchash.prototype.exists = function(url, callback) {
url = this.enchashDecrypter_.getCanonicalUrl(url);
var host = this.enchashDecrypter_.getCanonicalHost(url,
PROT_EnchashDecrypter.MAX_DOTS);
var possible = [];
for (var i = 0; i < PROT_EnchashDecrypter.MAX_DOTS + 1; i++) {
possible.push(host);
var index = host.indexOf(".");
if (index == -1)
break;
host = host.substring(index + 1);
}
// Run the possible domains against the db.
(new EnchashMultiQuerier(possible, this.name, callback, url)).run();
}
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