diff options
| -rw-r--r-- | plugins/org.eclipse.tm.tcf.core/src/org/eclipse/tm/internal/tcf/services/local/LocatorService.java | 237 |
1 files changed, 153 insertions, 84 deletions
diff --git a/plugins/org.eclipse.tm.tcf.core/src/org/eclipse/tm/internal/tcf/services/local/LocatorService.java b/plugins/org.eclipse.tm.tcf.core/src/org/eclipse/tm/internal/tcf/services/local/LocatorService.java index b6bd9b52c..7f2459b6a 100644 --- a/plugins/org.eclipse.tm.tcf.core/src/org/eclipse/tm/internal/tcf/services/local/LocatorService.java +++ b/plugins/org.eclipse.tm.tcf.core/src/org/eclipse/tm/internal/tcf/services/local/LocatorService.java @@ -10,6 +10,9 @@ *******************************************************************************/ package org.eclipse.tm.internal.tcf.services.local; +import java.io.BufferedReader; +import java.io.IOException; +import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.lang.reflect.Method; import java.net.DatagramPacket; @@ -71,8 +74,7 @@ public class LocatorService implements ILocator { private InetAddress loopback_addr; /** - * Flag indicating whether tracing of the the discovery activity is enabled - * or not. + * Flag indicating whether tracing of the the discovery activity is enabled. */ static boolean TRACE_DISCOVERY = System.getProperty("org.eclipse.tm.tcf.core.tracing.discovery") != null; @@ -525,91 +527,23 @@ public class LocatorService implements ILocator { private void refreshSubNetList() { HashSet<SubNet> set = new HashSet<SubNet>(); try { - for (Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces(); e.hasMoreElements();) { - NetworkInterface f = e.nextElement(); - /* TODO: Class InterfaceAddress does not exists in Java versions before 1.6. - * Fix the code below when support for old Java versions is not needed any more. + String osname = System.getProperty("os.name", ""); + if (osname.startsWith("Windows")) { + /* + * Workaround for JVM bug: + * InterfaceAddress.getNetworkPrefixLength() does not conform to Javadoc + * http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6707289 + * + * The bug shows up only on Windows when IPv6 is enabled. + * The bug is supposed to be fixed in Java 1.7. */ - try { - Method m0 = f.getClass().getMethod("getInterfaceAddresses"); - for (Object ia : (List<?>)m0.invoke(f)) { - Method m1 = ia.getClass().getMethod("getNetworkPrefixLength"); - Method m2 = ia.getClass().getMethod("getAddress"); - Method m3 = ia.getClass().getMethod("getBroadcast"); - int network_prefix_len = (Short)m1.invoke(ia); - InetAddress address = (InetAddress)m2.invoke(ia); - InetAddress broadcast = (InetAddress)m3.invoke(ia); - if (network_prefix_len <= 0) { - // Windows XP reports network prefix length 0 - // for loopback interface when IP V6 is enabled. - // Is it bug or feature? - byte[] buf = address.getAddress(); - if (buf.length == 4 && buf[0] == 127) { - network_prefix_len = 8; - buf[1] = buf[2] = buf[3] = (byte)255; - broadcast = InetAddress.getByAddress(buf); - } - } - - if (address instanceof Inet4Address && network_prefix_len > 32) { - /* - * Workaround for JVM bug: - * InterfaceAddress.getNetworkPrefixLength() does not conform to Javadoc - * http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6707289 - * - * The bug shows up only when IPv6 is enabled. - * The bug is supposed to be fixed in Java 1.7. - */ - // TODO: need a better way to get network prefix length on Java 1.6 VM - network_prefix_len = 24; - } - - // TODO: discovery over IPv6 - - /* Create IPv6 broadcast address. - * The code does not work - commented out until fixed. - if (broadcast == null && - address instanceof Inet6Address && - !address.isAnyLocalAddress() && - !address.isLinkLocalAddress() && - !address.isMulticastAddress() && - !address.isLoopbackAddress()) { - byte[] net = address.getAddress(); - byte[] buf = new byte[16]; - buf[0] = (byte)0xff; // multicast - buf[1] = (byte)0x32; // flags + scope - buf[2] = (byte)0x00; // reserved - buf[3] = (byte)network_prefix_len; - int n = (network_prefix_len + 7) / 8; - for (int i = 0; i < n; i++) buf[i + 4] = net[i]; - broadcast = Inet6Address.getByAddress(null, buf); - } - */ - - if (network_prefix_len > 0 && address != null && broadcast != null) { - set.add(new SubNet(network_prefix_len, address, broadcast)); - } - } - } - catch (Exception x) { - // Java 1.5 or older - // TODO: need a better way to get broadcast addresses on Java 1.5 VM - Enumeration<InetAddress> n = f.getInetAddresses(); - while (n.hasMoreElements()) { - InetAddress addr = n.nextElement(); - byte[] buf = addr.getAddress(); - if (buf.length != 4) continue; - buf[3] = (byte)255; - try { - set.add(new SubNet(24, addr, InetAddress.getByAddress(buf))); - } - catch (UnknownHostException y) { - } - } - } + getWindowsSubNetList(set); + } + else { + getSubNetList(set); } } - catch (SocketException x) { + catch (Exception x) { log("Cannot get list of network interfaces", x); } for (Iterator<SubNet> i = subnets.iterator(); i.hasNext();) { @@ -631,6 +565,141 @@ public class LocatorService implements ILocator { } } + private void getSubNetList(HashSet<SubNet> set) throws SocketException { + for (Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces(); e.hasMoreElements();) { + NetworkInterface f = e.nextElement(); + /* TODO: Class InterfaceAddress does not exists in Java versions before 1.6. + * Fix the code below when support for old Java versions is not needed any more. + */ + try { + Method m0 = f.getClass().getMethod("getInterfaceAddresses"); + for (Object ia : (List<?>)m0.invoke(f)) { + Method m1 = ia.getClass().getMethod("getNetworkPrefixLength"); + Method m2 = ia.getClass().getMethod("getAddress"); + Method m3 = ia.getClass().getMethod("getBroadcast"); + int network_prefix_len = (Short)m1.invoke(ia); + InetAddress address = (InetAddress)m2.invoke(ia); + InetAddress broadcast = (InetAddress)m3.invoke(ia); + + // TODO: discovery over IPv6 + /* Create IPv6 broadcast address. + * The code does not work - commented out until fixed. + if (broadcast == null && + address instanceof Inet6Address && + !address.isAnyLocalAddress() && + !address.isLinkLocalAddress() && + !address.isMulticastAddress() && + !address.isLoopbackAddress()) { + byte[] net = address.getAddress(); + byte[] buf = new byte[16]; + buf[0] = (byte)0xff; // multicast + buf[1] = (byte)0x32; // flags + scope + buf[2] = (byte)0x00; // reserved + buf[3] = (byte)network_prefix_len; + int n = (network_prefix_len + 7) / 8; + for (int i = 0; i < n; i++) buf[i + 4] = net[i]; + broadcast = Inet6Address.getByAddress(null, buf); + } + */ + + if (network_prefix_len > 0 && address != null && broadcast != null) { + set.add(new SubNet(network_prefix_len, address, broadcast)); + } + } + } + catch (Exception x) { + // Java 1.5 or older + // TODO: need a better way to get broadcast addresses on Java 1.5 VM + Enumeration<InetAddress> n = f.getInetAddresses(); + while (n.hasMoreElements()) { + InetAddress addr = n.nextElement(); + byte[] buf = addr.getAddress(); + if (buf.length != 4) continue; + buf[3] = (byte)255; + try { + set.add(new SubNet(24, addr, InetAddress.getByAddress(buf))); + } + catch (UnknownHostException y) { + } + } + } + } + } + + private void getWindowsSubNetList(HashSet<SubNet> set) throws Exception { + HashMap<String,InetAddress> map = new HashMap<String,InetAddress>(); + for (Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces(); e.hasMoreElements();) { + NetworkInterface f = e.nextElement(); + Enumeration<InetAddress> n = f.getInetAddresses(); + while (n.hasMoreElements()) { + InetAddress addr = n.nextElement(); + if (addr instanceof Inet4Address) { + String s = addr.getHostAddress(); + if (s.startsWith("127.")) { + byte[] buf = addr.getAddress(); + buf[1] = buf[2] = buf[3] = (byte)255; + set.add(new SubNet(8, addr, InetAddress.getByAddress(buf))); + } + else { + map.put(s, addr); + } + } + } + } + Process prs = Runtime.getRuntime().exec(new String[]{ "ipconfig", "/all" }, null); + BufferedReader inp = new BufferedReader(new InputStreamReader(prs.getInputStream())); + for (;;) { + String s = inp.readLine(); + if (s == null) break; + int n = s.indexOf(" : "); + if (n < 0) continue; + InetAddress addr = map.get(s.substring(n + 3)); + if (addr == null) continue; + do s = inp.readLine(); + while (s != null && s.length() == 0); + if (s == null) break; + n = s.indexOf(" : "); + if (n < 0) continue; + s = s.substring(n + 3); + int l = s.length(); + int i_cnt = 0; + int d_cnt = 0; + for (int i = 0; i < l; i++) { + char ch = s.charAt(i); + if (ch == '.') d_cnt++; + else if (ch < '0' || ch > '9') i_cnt++; + } + if (d_cnt != 3 || i_cnt != 0) continue; + try { + byte[] buf = InetAddress.getByName(s).getAddress(); + int prefix_length = 0; + for (int i = 0; i < 32; i++) { + if ((buf[i / 8] & (1 << (7 - i % 8))) == 0) { + prefix_length = i; + break; + } + } + if (prefix_length > 0) { + buf = addr.getAddress(); + for (int i = prefix_length; i < 32; i++) { + buf[i / 8] |= 1 << (7 - i % 8); + } + set.add(new SubNet(prefix_length, addr, InetAddress.getByAddress(buf))); + } + } + catch (Exception x) { + } + } + try { + prs.getErrorStream().close(); + prs.getOutputStream().close(); + inp.close(); + } + catch (IOException x) { + } + prs.waitFor(); + } + private byte[] getUTF8Bytes(String s) { try { return s.getBytes("UTF-8"); |