TargetIPv6


1   
2   /*
3    * GNetWatch
4    * Copyright 2006, 2007 Alexandre Fenyo
5    * gnetwatch@fenyo.net
6    *
7    * This file is part of GNetWatch.
8    *
9    * GNetWatch is free software; you can redistribute it and/or modify
10   * it under the terms of the GNU General Public License as published by
11   * the Free Software Foundation; either version 2 of the License, or
12   * (at your option) any later version.
13   *
14   * GNetWatch is distributed in the hope that it will be useful,
15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17   * GNU General Public License for more details.
18   *
19   * You should have received a copy of the GNU General Public License
20   * along with GNetWatch; if not, write to the Free Software
21   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
22   */
23  
24  package net.fenyo.gnetwatch.targets;
25  
26  import net.fenyo.gnetwatch.*;
27  import net.fenyo.gnetwatch.GUI.GUI;
28  import net.fenyo.gnetwatch.GUI.VisualElement;
29  import net.fenyo.gnetwatch.actions.*;
30  import net.fenyo.gnetwatch.data.EventReachable;
31  
32  import org.apache.commons.logging.Log;
33  import org.apache.commons.logging.LogFactory;
34  import org.snmp4j.event.ResponseEvent;
35  
36  import java.net.*;
37  
38  /**
39   * TargetIPv4 implements an IPv6 capable target.
40   * @author Alexandre Fenyo
41   * @version $Id: TargetIPv6.java,v 1.14 2007/03/09 22:44:20 fenyo Exp $
42   */
43  
44  public class TargetIPv6 extends Target {
45    private static Log log = LogFactory.getLog(TargetIPv4.class);
46  
47    private Inet6Address address; // not null
48    private SNMPQuerier snmp_querier;
49    private IPQuerier ip_querier;
50  
51    /**
52     * Constructor.
53     * @param name target name.
54     * @param address IPv6 address.
55     * @param SNMPManager snmp manager.
56     * @throws AlgorithmException exception.
57     */
58    // GUI thread
59    public TargetIPv6(final String   name, final Inet6Address address, final SNMPManager snmp_manager) throws AlgorithmException {
60      super(name);
61      if (address == null) throw new AlgorithmException("name is null");
62      this.address = address;
63      snmp_querier = snmp_manager != null ? snmp_manager.getQuerier(address) : null;
64      setItem(address.getHostAddress());
65      ip_querier = new IPQuerier(address);
66      // may last a long time (DNS resolver)
67      // setDescription(address.getCanonicalHostName());
68  }
69  
70    /**
71     * Checks that this host is SNMP capable.
72     * @param none.
73     * @return void.
74     */
75    public void checkSNMPAwareness() {
76      snmp_querier.getSysDescr(new SNMPQuerier.QuerierListener() {
77        public void onResponse(ResponseEvent event) {
78          getGUI().setStatus(getGUI().getConfig().getPattern("discovered_snmp", getAddress().toString().substring(1)));
79          setImageHostSNMP();
80        }
81  
82        public void onTimeout(ResponseEvent event) {
83          getGUI().setStatus(getGUI().getConfig().getPattern("snmp_timeout", getAddress().toString().substring(1)));
84        }
85      });
86    }
87  
88    /**
89     * Returns the SNMP querier.
90     * @param none.
91     * @return SNMPQuerier querier instance.
92     */
93    public SNMPQuerier getSNMPQuerier() {
94      return snmp_querier;
95    }
96  
97    /**
98     * Returns the IP querier.
99     * @param none.
100    * @return IPQuerier querier instance.
101    */
102   public IPQuerier getIPQuerier() {
103     return ip_querier;
104   }
105 
106   /**
107    * Returns the IP address.
108    * @param none.
109    * @return Inet4Address IP address.
110    */
111   // any thread
112   public Inet6Address getAddress() {
113     return address;
114   }
115 
116   /**
117    * Checks that the parameter can be attached to this target.
118    * @param visual_element parameter to check.
119    * @return true if the parameter can be attached to this target.
120    */
121   public boolean canManageThisChild(final VisualElement visual_element) {
122     if (ActionPing.class.isInstance(visual_element)) return true;
123     if (ActionFlood.class.isInstance(visual_element)) return true;
124     if (ActionSNMP.class.isInstance(visual_element)) return true;
125     if (EventReachable.class.isInstance(visual_element)) return true;
126     if (TargetInterface.class.isInstance(visual_element)) return true;
127     if (ActionHTTP.class.isInstance(visual_element)) return true;
128     if (ActionNmap.class.isInstance(visual_element)) return true;
129     return false;
130   }
131 
132   /**
133    * Initializes this target.
134    * @param gui current GUI instance.
135    * @return void.
136    */
137   // final because called by constructor (by means of setItem())
138   protected final void initialize(final GUI gui) {
139     super.initialize(gui);
140     if (gui != null) setImageHost6();
141   }
142 
143   /**
144    * Attaches this target to a specific parent.
145    * @param gui current GUI instance.
146    * @param parent parent.
147    * @return true if this target has been succesfully attached.
148    */
149   public boolean addTarget(final GUI gui, final VisualElement parent) {
150     initialize(gui);
151 
152     if (!canAddTarget(parent)) return false;
153     if (parent != null && !parent.canManageThisChild(this)) return false;
154 
155     final boolean is_new = !getGUI().containsCanonicalInstance(this);
156     final TargetIPv6 target_ipv6 = (TargetIPv6) getGUI().getCanonicalInstance(this);
157 
158     if (!getGUI().getVisualTransientAll().contains(target_ipv6)) target_ipv6.setParent(getGUI(), getGUI().getVisualTransientAll());
159 
160     if (parent != null) target_ipv6.setParent(getGUI(), parent);
161 
162     return is_new;
163   }
164 
165   /**
166    * Attaches this target to a specific parent defined by its address.
167    * @param gui current GUI instance.
168    * @param addr_str parent address.
169    * @return true if this target has been succesfully attached.
170    */
171   public static void addTargetIPv6(final GUI gui, final String   addr_str) {
172     try {
173       synchronized (gui.sync_tree) {
174         final TargetIPv6 foo = new TargetIPv6(addr_str, (Inet6Address) InetAddress.getByName(addr_str), gui.getSNMPManager());
175         if (gui.containsCanonicalInstance(foo)) return;
176         gui.asyncExecIfNeeded(new Runnable  () {
177           public void run() {
178             synchronized (gui.sync_tree) {
179               if (gui.containsCanonicalInstance(foo)) return;
180               if (foo.addTarget(gui, (VisualElement) null) == true) foo.checkSNMPAwareness();
181             }
182           }
183         });
184       }
185     } catch (final AlgorithmException ex) {
186       log.error("Exception", ex);
187     } catch (final UnknownHostException ex) {
188       log.error("Exception", ex);
189     }
190   }
191 
192   /**
193    * Compares two targets.
194    * @param o target to compare to.
195    * @return true if the targets are equal.
196    */
197   // any thread
198   public boolean equals(final Object   o) {
199     if (this == o) return true;
200     if ((o == null) || (o.getClass() != getClass())) return false;
201     final TargetIPv6 target = (TargetIPv6) o;
202     return getAddress().equals(target.getAddress());
203   }
204 
205   /**
206    * Returns the hashcode for this target.
207    * @param none.
208    * @return int hashcode.
209    */
210   // any thread
211   public int hashCode() {
212     return getAddress().hashCode();
213   }
214 }
215
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