JnetPcap源码

/** * Copyright (C) 2007 Sly Technologies, Inc. This library is free software; you * can redistribute it and/or modify it under the terms of the GNU Lesser * General Public License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. This * library is distributed in the hope that it will be useful, but WITHOUT ANY * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR * A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more * details. You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package org.jnetpcap; import java.io.File; import java.io.IOException; import java.net.SocketException; import java.nio.ByteBuffer; import java.util.ArrayList; import java.util.List; import java.util.concurrent.atomic.AtomicInteger; import junit.framework.TestCase; import junit.textui.TestRunner; import org.jnetpcap.nio.JBuffer; import org.jnetpcap.nio.JMemory; import org.jnetpcap.nio.JNumber; import org.jnetpcap.nio.JNumber.Type; /** * @author Mark Bednarczyk * @author Sly Technologies, Inc. */ @SuppressWarnings("deprecation") public class TestPcapJNI extends TestCase { // private final static String device = // "\\Device\\NPF_{BC81C4FC-242F-4F1C-9DAD-EA9523CC992D}"; private final static String win = "\\Device\\NPF_{BC81C4FC-242F-4F1C-9DAD-EA9523CC992D}"; private final static String linux = "any"; private final static boolean isWindows = "Windows XP".equals(System.getProperty("os.name")); private final static String device = (isWindows) ? win : linux; private final static String fname = "tests/test-l2tp.pcap"; private static final int OK = 0; private static final int snaplen = 64 * 1024; private static final int promisc = 1; private static final int oneSecond = 1000; /** * Will generate HTTP traffic to a website. Use start() to start in a test * method, and always put stop() in tearDown. Safe to call stop even when * never started. */ private static final HttpTrafficGenerator gen = new HttpTrafficGenerator(); private static File tmpFile; static { try { tmpFile = File.createTempFile("temp-", "-TestPcapJNI"); } catch (IOException e) { tmpFile = null; System.err.println("Unable to initialize a temporary file"); } } /** * Command line launcher to run the jUnit tests cases in this test class. * * @param args * -h for help */ public static void main(String[] args) { if (args.length == 1 && "-h".equals(args[0])) { System.out .println("Usage: java -jar jnetpcap.jar [-h]\n" + " -h This help message\n" + " (No other command line options are supported.)\n" + "----------------------------------------------------------------\n\n" + "The 'main' method invoked here, runs several dozen jUnit tests\n" + "which test the functionality of this jNetPcap library.\n" + "The tests are actual excersizes using native libpcap\n" + "library linked with 'jnetpcap.dll' or 'libjnetpcap.so' on\n" + "unix systems.\n\n" + "If you are having trouble linking the native library and get\n" + "'UnsatisfiedLinkError', which means java is not finding the\n" + "library, here are a few pointers:\n\n" + "Java's native library loader DOES NOT USE CLASSPATH variable\n" + "to locate native libraries. Each operating system uses different\n" + "algorithm to locate files, as described below. You can always\n" + "force java to look for native library with Java VM command\n" + "line option 'java -Djava.library.path=lib' where lib is\n" + "a directory where 'jnetpcap.dll' or 'libjnetpcap.so' resides\n" + "relative to the installation directory of jNetStream package.\n" + "Or replace lib with the directory where you have installed the\n" + "library.\n\n" + "On Win32 systems:\n" + " Windows systems use /windows and /windows/system32 folder\n" + " to search for jnetpcap.dll. Also the 'PATH' variable, the same\n" + " one used to specify executable commands, is used as well.\n\n" + "On Unix systems:\n" + " All unix systems use the standard 'LD_LIBRARY_PATH' variable.\n\n" + "Of course as mentioned earlier, to override this behaviour use\n" + "the '-Djava.library.path=' directory, to force java to look in\n" + "that particular directory. Do not set the path which includes the\n" + "name of the library itself, just the directory to search in.\n\n" + "Final note, native librariers can not be loaded from jar files.\n" + "You have to extract it to a physical directory if you want java to\n" + "load it. This was done purposely by Sun for security reasons."); return; } TestRunner.main(new String[] { "org.jnetpcap.TestPcapJNI" }); } private StringBuilder errbuf = new StringBuilder(); private final PcapHandler<?> doNothingHandler = new PcapHandler<Object>() { public void nextPacket(Object userObject, long seconds, int useconds, int caplen, int len, ByteBuffer buffer) { // Do nothing handler } }; /** * @throws java.lang.Exception */ protected void setUp() throws Exception { errbuf = new StringBuilder(); if (tmpFile.exists()) { assertTrue(tmpFile.delete()); } } /** * Test disabled, as it requires live packets to capture. To enable the test * just rename the method, by removing the prefix SKIP. Then make sure there * are live packets to be captured. */ public void SKIPtestOpenLiveAndDispatch() { Pcap pcap = Pcap.openLive(device, 10000, 1, 60 * 1000, errbuf); assertNotNull(errbuf.toString(), pcap); PcapHandler<String> handler = new PcapHandler<String>() { public void nextPacket(String user, long seconds, int useconds, int caplen, int len, ByteBuffer buffer) { // System.out.printf("%s, ts=%s caplen=%d len=%d capacity=%d\n", user // .toString(), new Date(seconds * 1000).toString(), caplen, len, // buffer.capacity()); } }; pcap.dispatch(10, handler, "Hello"); pcap.close(); } /** * @throws java.lang.Exception */ protected void tearDown() throws Exception { errbuf = null; /* * Stop the traffic generator, even when not running need to call to make * sure its not running. */ gen.stop(); if (tmpFile != null && tmpFile.exists()) { tmpFile.delete(); } } public void testCompileNoPcapNullPtrHandling() { try { Pcap.compileNoPcap(1, 1, null, null, 1, 1); fail("Expected a NULL pointer exception."); } catch (NullPointerException e) { // OK } } public void testCompileNullPtrHandling() { Pcap pcap = Pcap.openOffline(fname, errbuf); try { pcap.compile(null, null, 1, 0); fail("Expected a NULL pointer exception."); } catch (NullPointerException e) { // OK } finally { pcap.close(); } } public void testDataLinkNameToValNullPtrHandling() { try { Pcap.datalinkNameToVal(null); fail("Expected a NULL pointer exception."); } catch (NullPointerException e) { // OK } } public void testPcapClosedExceptionHandling() { Pcap pcap = Pcap.openOffline(fname, errbuf); pcap.close(); try { pcap.breakloop(); fail("Expected PcapClosedException"); } catch (PcapClosedException e) { // Success } } public void testDatalinkNameToValue() { assertEquals(1, Pcap.datalinkNam