1600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang/* 2600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* Conditions Of Use 3600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* 4600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* This software was developed by employees of the National Institute of 5600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* Standards and Technology (NIST), an agency of the Federal Government. 6600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* Pursuant to title 15 Untied States Code Section 105, works of NIST 7600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* employees are not subject to copyright protection in the United States 8600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* and are considered to be in the public domain. As a result, a formal 9600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* license is not needed to use the software. 10600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* 11600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* This software is provided by NIST as a service and is expressly 12600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED 13600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF 14600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT 15600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* AND DATA ACCURACY. NIST does not warrant or make any representations 16600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* regarding the use of the software or the results thereof, including but 17600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* not limited to the correctness, accuracy, reliability or usefulness of 18600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* the software. 19600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* 20600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* Permission to use this software is contingent upon your acceptance 21600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* of the terms of this agreement 22600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* 23600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* . 24600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang* 25600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang*/ 26600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang/******************************************************************************* 27600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * Product of NIST/ITL Advanced Networking Technologies Division (ANTD). * 28600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang *******************************************************************************/ 29600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wangpackage gov.nist.javax.sip.stack; 30600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 31600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wangimport java.io.Serializable; 32600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wangimport java.util.StringTokenizer; 33600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang/* 34600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * IPv6 Support added by Emil Ivov (emil_ivov@yahoo.com)<br/> 35600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * Network Research Team (http://www-r2.u-strasbg.fr))<br/> 36600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * Louis Pasteur University - Strasbourg - France<br/> 37600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * Bug fix for correct handling of IPV6 Address added by 38600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * Daniel J. Martinez Manzano <dani@dif.um.es> 39600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang */ 40600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang/** 41600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * Routing algorithms return a list of hops to which the request is 42600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * routed. 43600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * 44600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * @version 1.2 $Revision: 1.11 $ $Date: 2009/07/17 18:58:13 $ 45600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * 46600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * @author M. Ranganathan <br/> 47600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * 48600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * 49600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * 50600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 51600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * 52600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang */ 53600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wangpublic final class HopImpl extends Object implements javax.sip.address.Hop, Serializable { 54600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang protected String host; 55600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang protected int port; 56600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang protected String transport; 57600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 58600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang protected boolean defaultRoute; // This is generated from the proxy addr 59600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang protected boolean uriRoute; // This is extracted from the requestURI. 60600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 61600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang /** 62600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * Debugging println. 63600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang */ 64600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang public String toString() { 65600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang return host + ":" + port + "/" + transport; 66600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 67600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 68600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang /** 69600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * Create new hop given host, port and transport. 70600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * @param hostName hostname 71600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * @param portNumber port 72600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * @param trans transport 73600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang */ 74600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang public HopImpl(String hostName, int portNumber, String trans) { 75600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang host = hostName; 76600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 77600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang // Added by Daniel J. Martinez Manzano <dani@dif.um.es> 78600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang // for correct management of IPv6 addresses. 79600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang if(host.indexOf(":") >= 0) 80600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang if(host.indexOf("[") < 0) 81600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang host = "[" + host + "]"; 82600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 83600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang port = portNumber; 84600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang transport = trans; 85600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 86600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 87600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 88600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang /** 89600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * Creates new Hop 90600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * @param hop is a hop string in the form of host:port/Transport 91600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * @throws IllegalArgument exception if string is not properly formatted or null. 92600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang */ 93600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang HopImpl(String hop) throws IllegalArgumentException { 94600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 95600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang if (hop == null) 96600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang throw new IllegalArgumentException("Null arg!"); 97600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 98600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang // System.out.println("hop = " + hop); 99600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang int brack = hop.indexOf(']'); 100600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang int colon = hop.indexOf(':',brack); 101600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang int slash = hop.indexOf('/',colon); 102600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 103600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang if (colon>0) { 104600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang this.host = hop.substring(0,colon); 105600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang String portstr; 106600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang if (slash>0) { 107600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang portstr = hop.substring(colon+1,slash); 108600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang this.transport = hop.substring(slash+1); 109600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } else { 110600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang portstr = hop.substring(colon+1); 111600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang this.transport = "UDP"; 112600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 113600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang try { 114600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang port = Integer.parseInt(portstr); 115600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } catch (NumberFormatException ex) { 116600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang throw new IllegalArgumentException("Bad port spec"); 117600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 118600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } else { 119600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang if (slash>0) { 120600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang this.host = hop.substring(0,slash); 121600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang this.transport = hop.substring(slash+1); 122600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang this.port = transport.equalsIgnoreCase("TLS") ? 5061 : 5060; 123600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } else { 124600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang this.host = hop; 125600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang this.transport = "UDP"; 126600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang this.port = 5060; 127600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 128600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 129600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 130600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang // Validate it 131600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang if (host == null || host.length() == 0) 132600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang throw new IllegalArgumentException("no host!"); 133600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 134600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang // normalize 135600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang this.host = this.host.trim(); 136600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang this.transport = this.transport.trim(); 137600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 138600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang if ((brack>0) && host.charAt(0)!='[') { 139600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang throw new IllegalArgumentException("Bad IPv6 reference spec"); 140600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 141600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 142600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang if (transport.compareToIgnoreCase("UDP") != 0 143600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang && transport.compareToIgnoreCase("TLS") != 0 144600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang && transport.compareToIgnoreCase("TCP") != 0) { 145600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang System.err.println("Bad transport string " + transport); 146600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang throw new IllegalArgumentException(hop); 147600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 148600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 149600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 150600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang /** 151600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * Retruns the host string. 152600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * @return host String 153600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang */ 154600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang public String getHost() { 155600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang return host; 156600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 157600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 158600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang /** 159600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * Returns the port. 160600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang * @return port integer. 161600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang */ 162600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang public int getPort() { 163600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang return port; 164600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 165600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 166600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang /** returns the transport string. 167600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang */ 168600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang public String getTransport() { 169600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang return transport; 170600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 171600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 172600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 173600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 174600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang /** Return true if this is uriRoute 175600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang */ 176600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang public boolean isURIRoute() { 177600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang return uriRoute; 178600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 179600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 180600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang /** Set the URIRoute flag. 181600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang */ 182600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang public void setURIRouteFlag() { 183600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang uriRoute = true; 184600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang } 185600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 186600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 187600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang 188600c7a4bbc7348167293eac928192e695b4ad5baChung-yih Wang} 189