start of new address configuration

apps/routerconsole/java/src/net/i2p/router/web/ConfigNetHelper.java

@@ -5,6 +5,7 @@ import net.i2p.router.CommSystemFacade;
 import net.i2p.router.LoadTestManager;
 import net.i2p.router.Router;
 import net.i2p.router.RouterContext;
+import net.i2p.router.transport.Addresses;
 import net.i2p.router.transport.TransportManager;
 import net.i2p.router.transport.udp.UDPAddress;
 import net.i2p.router.transport.udp.UDPTransport;
@@ -20,6 +21,13 @@ public class ConfigNetHelper extends HelperBase {
     public final static String PROP_I2NP_NTCP_AUTO_IP = "i2np.ntcp.autoip";
     private final static String CHECKED = " checked=\"true\" ";
     private final static String DISABLED = " disabled=\"true\" ";
+
+    public String getUdphostname() {
+        String hostname = _context.getProperty(UDPTransport.PROP_EXTERNAL_HOST); 
+        if (hostname == null) return "";
+        return hostname;
+    }
+
     public String getNtcphostname() {
         if (!TransportManager.enableNTCP(_context))
             return "\" disabled=\"true";
@@ -116,6 +124,18 @@ public class ConfigNetHelper extends HelperBase {
         return "";
     }
 
+//////////////// FIXME
+    public String getUdpAutoIPChecked(int mode) {
+        String hostname = _context.getProperty(PROP_I2NP_NTCP_HOSTNAME); 
+        boolean specified = hostname != null && hostname.length() > 0;
+        boolean auto = Boolean.valueOf(_context.getProperty(PROP_I2NP_NTCP_AUTO_IP)).booleanValue();
+        if ((mode == 0 && (!specified) && !auto) ||
+            (mode == 1 && specified && !auto) ||
+            (mode == 2 && auto))
+            return CHECKED;
+        return "";
+    }
+
     public String getUpnpChecked() {
         return getChecked(TransportManager.PROP_ENABLE_UPNP);
     }
@@ -133,6 +153,10 @@ public class ConfigNetHelper extends HelperBase {
         }
     }
     
+    public String[] getAddresses() {
+        return Addresses.getAddresses();
+    }
+
     public String getInboundRate() {
         return "" + _context.bandwidthLimiter().getInboundKBytesPerSecond();
     }

apps/routerconsole/jsp/config.jsp

@@ -68,17 +68,46 @@
  <hr />
 -->
  <b>UDP Configuration:</b><br />
+ Externally reachable hostname or IP address:<br />
+    <input type="radio" name="udpAutoIP" value="0" <%=nethelper.getUdpAutoIPChecked(0) %> />
+    Use SSU detection only<br />
+    <input type="radio" name="udpAutoIP" value="24" <%=nethelper.getUdpAutoIPChecked(24) %> />
+    Use local public address if available, then UPnP detection, then SSU detection<br />
+    <input type="radio" name="udpAutoIP" value="16" <%=nethelper.getUdpAutoIPChecked(16) %> />
+    Use local public address if available, then SSU detection<br />
+    <input type="radio" name="udpAutoIP" value="8" <%=nethelper.getUdpAutoIPChecked(8) %> />
+    Use UPnP detection if available, then SSU detection<br />
+    <input type="radio" name="udpAutoIP" value="1" <%=nethelper.getUdpAutoIPChecked(1) %> />
+    Specify hostname or IP:
+    <input name ="udphost" type="text" size="16" value="<jsp:getProperty name="nethelper" property="udphostname" />" />
+    <% String[] ips = nethelper.getAddresses();
+       if (ips.length > 0) {
+           out.print(" or <select name=\"interface\"><option value=\"\" selected=\"true\">Select Interface</option>\n");
+           for (int i = 0; i < ips.length; i++) {
+               out.print("<option value=\"");
+               out.print(ips[i]);
+               out.print("\">");
+               out.print(ips[i]);
+               out.print("</option>\n");
+           }
+           out.print("</select>\n");
+       }
+    %>
+    <br />
+    <input type="radio" name="udpAutoIP" value="2" <%=nethelper.getUdpAutoIPChecked(2) %> />
+    Hidden mode - do not publish IP<i>(not recommended)</i><br />
  Internal UDP port:
  <input name ="udpPort" type="text" size="6" value="<jsp:getProperty name="nethelper" property="configuredUdpPort" />" /><br />
- External UDP address: <i><jsp:getProperty name="nethelper" property="udpAddress" /></i><br />
- Require SSU introductions?
-<input type="checkbox" name="requireIntroductions" value="true" <jsp:getProperty name="nethelper" property="requireIntroductionsChecked" /> /><br />
+<input type="checkbox" name="requireIntroductions" value="true" <jsp:getProperty name="nethelper" property="requireIntroductionsChecked" /> />
+ Require SSU introductions
+ <i>(Enable if you cannot open your firewall)</i><br />
+ Current External UDP address: <i><jsp:getProperty name="nethelper" property="udpAddress" /></i><br />
  <p>If you can, please poke a hole in your NAT or firewall to allow unsolicited UDP packets to reach
     you on your external UDP address.  If you can't, I2P now includes supports UDP hole punching
     with "SSU introductions" - peers who will relay a request from someone you don't know to your
     router for your router so that you can make an outbound connection to them.  I2P will use these
     introductions automatically if it detects that the port is not forwarded (as shown by
-    the <i>Status: Firewalled</i> line), or you can manually require them here.  
+    the <i>Reachability: Firewalled</i> line), or you can manually require them here.  
     Users behind symmetric NATs, such as OpenBSD's pf, are not currently supported.</p>
 <input type="submit" name="recheckReachability" value="Check network reachability..." />
  <p>
@@ -88,18 +117,18 @@
     Disable<br />
     <input type="radio" name="ntcpAutoIP" value="2" <%=nethelper.getTcpAutoIPChecked(2) %> />
     Use IP address detected by SSU
-    (currently <jsp:getProperty name="nethelper" property="udpIP" />)<br />
+    <i>(currently <jsp:getProperty name="nethelper" property="udpIP" />)</i><br />
     <input type="radio" name="ntcpAutoIP" value="1" <%=nethelper.getTcpAutoIPChecked(1) %> />
     Specify hostname or IP:
     <input name ="ntcphost" type="text" size="16" value="<jsp:getProperty name="nethelper" property="ntcphostname" />" />
-    (dyndns and the like are fine)<br />
+    <i>(dyndns and the like are fine)</i><br />
  <p>
  Externally reachable TCP port:<br />
     <input type="radio" name="ntcpAutoPort" value="0" <%=nethelper.getTcpAutoPortChecked(0) %> />
     Disable<br />
     <input type="radio" name="ntcpAutoPort" value="2" <%=nethelper.getTcpAutoPortChecked(2) %> />
     Use the same port configured for SSU
-    (currently <jsp:getProperty name="nethelper" property="udpPort" />)?<br />
+    <i>(currently <jsp:getProperty name="nethelper" property="udpPort" />)</i><br />
     <input type="radio" name="ntcpAutoPort" value="1" <%=nethelper.getTcpAutoPortChecked(1) %> />
     Specify Port:
     <input name ="ntcpport" type="text" size="6" value="<jsp:getProperty name="nethelper" property="ntcpport" />" /><br />

router/java/src/net/i2p/router/transport/Addresses.java

+package net.i2p.router.transport;
+
+/*
+ * public domain
+ */
+
+import java.net.InetAddress;
+import java.net.Inet4Address;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.net.UnknownHostException;
+import java.util.Enumeration;
+import java.util.HashSet;
+import java.util.Set;
+
+
+/**
+ * Get the local addresses
+ *
+ * @author zzz
+ */
+public class Addresses {
+    
+    /** return the first non-local address it finds, or null */
+    public static String getAnyAddress() {
+        String[] a = getAddresses();
+        if (a.length > 0)
+            return a[0];
+        return null;
+    }
+
+    /**
+     *  Return an array of all addresses, excluding
+     *  IPv6, local, broadcast, multicast, etc.
+     */
+    public static String[] getAddresses() {
+        Set<String> rv = new HashSet(4);
+        try {
+            InetAddress localhost = InetAddress.getLocalHost();
+            InetAddress[] allMyIps = InetAddress.getAllByName(localhost.getCanonicalHostName());
+            if (allMyIps != null) {
+                for (int i = 0; i < allMyIps.length; i++)
+                     add(rv, allMyIps[i]);
+            }
+        } catch (UnknownHostException e) {}
+
+        try {
+            for(Enumeration<NetworkInterface> ifcs = NetworkInterface.getNetworkInterfaces(); ifcs.hasMoreElements();) {
+                NetworkInterface ifc = ifcs.nextElement();
+                for(Enumeration<InetAddress> addrs =  ifc.getInetAddresses(); addrs.hasMoreElements();) {
+                    InetAddress addr = addrs.nextElement();
+                    add(rv, addr);
+                }
+            }
+        } catch (SocketException e) {}
+
+        return rv.toArray(new String[rv.size()]);
+    }
+
+    private static void add(Set<String> set, InetAddress ia) {
+        if (ia.isAnyLocalAddress() ||
+            ia.isLinkLocalAddress() ||
+            ia.isLoopbackAddress() ||
+            ia.isMulticastAddress() ||
+            ia.isSiteLocalAddress() ||
+            !(ia instanceof Inet4Address)) {
+///////// testing
+//            System.err.println("Skipping: " + ia.getHostAddress());
+//            return;
+        }
+        String ip = ia.getHostAddress();
+        set.add(ip);
+    }
+
+    public static void main(String[] args) {
+        String[] a = getAddresses();
+        for (String s : a)
+            System.err.println("Address: " + s);
+    }
+}