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/**
* GNU LibreJS - A browser add-on to block nonfree nontrivial JavaScript.
* *
* Copyright (C) 2011, 2012, 2013, 2014 Loic J. Duros
*
* 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/>.
*
*/
var timer = require("sdk/timers");
var {Cc, Ci, Cu, Cm, Cr} = require("chrome");
var {XPCOMUtils} = Cu.import("resource://gre/modules/XPCOMUtils.jsm");
// ensure xhr won't create an infinite loop
// with html content.
var urlTester = require("html_script_finder/url_seen_tester").urlSeenTester;
var urlHandler = require("url_handler/url_handler");
const scriptsCached = require("script_entries/scripts_cache").scriptsCached;
var Request = function() {
this.url = null;
this.channel = null;
this.script = null;
this.responseCallback = null;
};
/**
* init
*/
Request.prototype.init = function(script, callback) {
this.script = script;
// set initial url
this.url = this.script.url;
console.debug('In Request.init() for url:', this.url);
this.responseCallback = callback;
var iOService = Cc["@mozilla.org/network/io-service;1"]
.getService(Ci.nsIIOService);
this.channel = iOService.newChannel(this.url, null, null);
};
Request.prototype.request = function() {
var that = this;
var responseReceived = function (data) {
that.responseCallback(that.script, data);
};
try {
this.channel.asyncOpen({
QueryInterface: XPCOMUtils.generateQI(
[Ci.nsIRequestObserver, Ci.nsIStreamListener]),
data: "",
charset: null,
onStartRequest: function(request, context) {
this.charset = request.contentCharset || "UTF-8";
},
onDataAvailable: function (request, context, stream, offset, count) {
try {
var binaryInputStream = Cc["@mozilla.org/binaryinputstream;1"]
.createInstance(Ci.nsIBinaryInputStream);
binaryInputStream.setInputStream(stream);
var data = binaryInputStream.readBytes(count);
this.data += data;
} catch (x) {
console.debug('error in request', x, x.lineNumber);
responseReceived("");
}
},
onStopRequest: function (request, context, result) {
try {
if (this.charset.toLowerCase() != "utf-8") {
var uConv = Cc["@mozilla.org/intl/utf8converterservice;1"]
.createInstance(Ci.nsIUTF8ConverterService);
this.data = uConv.convertStringToUTF8(
this.data, this.charset, true);
}
} catch (e) {
console.debug("Issue with nsIUTF8ConverterService", e);
console.debug("Charset was", this.charset);
responseReceived("");
}
responseReceived(this.data);
}
}, null);
} catch(e) {
console.debug("asyncOpen exception", e);
responseReceived("");
}
};
// Instantiate a Request
exports.request = function(script, callback) {
var obj = new Request();
obj.init(script, callback);
return obj;
};
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