/** Test filter compile no pcap and accessors. */
public void testFilterCompileNoPcapAndAccessors() {
PcapBpfProgram bpf = new PcapBpfProgram();
String str = "host 192.168.1.1";
int r = Pcap.compileNoPcap(1024, 1, bpf, str, 0, 0);
assertEquals(OK, r);
assertEquals(26, bpf.getInstructionCount());
assertEquals(120259084320L, bpf.getInstruction(10));
// Boundary checks
try {
bpf.getInstruction(-10);
fail("Failed to generate exception on low index boundary");
} catch (IndexOutOfBoundsException e) {
// OK
}
// Boundary checks
try {
bpf.getInstruction(26);
fail("Failed to generate exception on upper index boundary");
} catch (IndexOutOfBoundsException e) {
// OK
}
Pcap.freecode(bpf);
}
/** Test open dead and close. */
public void testOpenDeadAndClose() {
Pcap pcap = Pcap.openDead(1, 10000); // DLT, SNAPLEN
assertNotNull(errbuf.toString(), pcap);
pcap.close();
}
/** Test open live and loop with breakloop. */
public void testOpenLiveAndLoopWithBreakloop() {
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.breakloop(); // Should cause it to exit immediately
assertEquals(
"Error code does not indicate breakloop interrupted the loop when it should have",
-2,
pcap.loop(10, handler, "Hello"));
pcap.close();
}
/** Test set and get nonblock. */
public void testSetAndGetNonblock() {
Pcap pcap = Pcap.openLive(device, 10000, 1, 60 * 1000, errbuf);
assertNotNull(errbuf.toString(), pcap);
assertEquals(OK, pcap.getNonBlock(errbuf));
pcap.close();
}
/** Test pcap closed exception handling. */
public void testPcapClosedExceptionHandling() {
Pcap pcap = Pcap.openOffline(fname, errbuf);
pcap.close();
try {
pcap.breakloop();
fail("Expected PcapClosedException");
} catch (PcapClosedException e) {
// Success
}
}
/** Test compile null ptr handling. */
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();
}
}
/** Test set non block null ptr handling. */
public void testSetNonBlockNullPtrHandling() {
Pcap pcap = Pcap.openOffline(fname, errbuf);
try {
pcap.setNonBlock(1, null);
fail("Expected a NULL pointer exception.");
} catch (NullPointerException e) {
// OK
} finally {
pcap.close();
}
}
/** Test loop null ptr handling. */
public void testLoopNullPtrHandling() {
Pcap pcap = Pcap.openOffline(fname, errbuf);
try {
pcap.loop(1, (ByteBufferHandler<String>) null, null);
fail("Expected a NULL pointer exception.");
} catch (NullPointerException e) {
// OK
} finally {
pcap.close();
}
}
/** Test next null ptr handling. */
public void testNextNullPtrHandling() {
Pcap pcap = Pcap.openOffline(fname, errbuf);
try {
pcap.next((PcapHeader) null, null);
fail("Expected a NULL pointer exception.");
} catch (NullPointerException e) {
// OK
} finally {
pcap.close();
}
}
/** Test filter compile and set filter. */
public void testFilterCompileAndSetFilter() {
PcapBpfProgram bpf = new PcapBpfProgram();
String str = "host 192.168.101";
// System.out.println("trying to compiler the filter() OK\n");
// System.out.flush();
Pcap pcap = Pcap.openOffline(fname, errbuf);
// System.out.println("filter was compiled OK\n"); System.out.flush();
assertNotNull(errbuf.toString(), pcap);
int r = pcap.compile(bpf, str, 0, 0);
assertEquals(pcap.getErr(), 0, r);
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());
}
};
// System.out.println("trying to set the filter() OK\n");
// System.out.flush();
assertEquals(OK, pcap.setFilter(bpf));
// System.out.println("filter was set OK\n"); System.out.flush();
assertEquals(OK, pcap.loop(10, handler, str));
Pcap.freecode(bpf);
pcap.close();
}
/**
* Test case in response to <code>
* Bug #1767744 - PcapHandler object ptr error in loop() and dispatch()</code>. The bug was that
* PcapHandler jobject ptr in JNI jnetpcap.cpp, was set incorrectly to jobject of the parent which
* is the Pcap object itself. The neccessary method "nextPacket" was looked up correctly using the
* proper object but method execution was based on the parent Pcap object not the PcapHandler
* object passed in. Therefore Java code when it was setting and accessing properties within the
* PcapHandler sub-class, it was actually clobering data within the Pcap object. Both object's
* states were terribly incosinstent, private fields had bogus values, that changed for no reason,
* etc... Very easy fix, the jobject for 'jhandler' was substituted for jobject 'obj' that was
* used to fix this problem. The problem was both in dispatch() and loop() methods since they are
* nearly an identical copy of each other.
*
* <p>To test this we have to create a PcapHandler object set private fields within it, we'll use
* an anonymous class, then read in the contents of the entire contents of a test datafile, while
* updating the value of the field. Then at the end we should have consitent value in that private
* field. Since the problem seemed complex, but was actually a very easy fix, this should never
* really break again, but we will check for it anyhow.
*/
public void testPcapHandlerParentOverrideBugUsingDispatch() {
Pcap pcap = Pcap.openOffline(fname, errbuf);
if (pcap == null) {
fail("Unable to open test data file because " + errbuf.toString());
}
final Pcap parent = pcap;
// Tracking variable #1
final AtomicInteger pcapCount = new AtomicInteger();
final PcapHandler<?> handler =
new PcapHandler<Object>() {
// Tracking variable #2
private int count = 0;
public void nextPacket(
Object userObject,
long seconds,
int useconds,
int caplen,
int len,
ByteBuffer buffer) {
pcapCount.addAndGet(1);
count++;
if (pcapCount.get() != count) {
parent.breakloop(); // We exit with breakloop which means FAIL
}
}
};
int r = pcap.dispatch(Pcap.DISPATCH_BUFFER_FULL, handler, null);
if (r == Pcap.LOOP_INTERRUPTED) {
/*
* Tracking variables are used to make sure they can sustain their
* assigned values. The bug caused fields and object state to be overriden
* by object of PcapHandler type.
*/
fail("Handler indicates that 2 tracking variables in 2 objects, " + "did not match");
} else if (r != Pcap.OK) {
fail("Error occured: " + pcap.getErr());
}
pcap.close();
}
/** Test lookup dev and lookup net deprecated api. */
@SuppressWarnings("deprecation")
public void testLookupDevAndLookupNetDeprecatedAPI() {
String device = Pcap.lookupDev(errbuf);
assertNotNull(errbuf.toString(), device);
PcapInteger netp = new PcapInteger();
PcapInteger maskp = new PcapInteger();
int r = Pcap.lookupNet(device, netp, maskp, errbuf);
assertEquals(errbuf.toString(), 0, r);
System.out.printf(
"device=%s netp=%X maskp=%X errbuf=%s\n",
device, netp.getValue(), maskp.getValue(), errbuf.toString());
}
/** Test is sendpacket supported win32. */
public void testIsSendpacketSupportedWin32() {
if (System.getProperty("os.name").toLowerCase().contains("win")) {
assertTrue(Pcap.isSendPacketSupported());
} else {
assertTrue(true); // Be explicit
}
}
/** Test open offline and next. */
public void testOpenOfflineAndNext() {
Pcap pcap = Pcap.openOffline(fname, errbuf);
assertNotNull(errbuf.toString(), pcap);
PcapPktHdr hdr = new PcapPktHdr();
ByteBuffer buffer = pcap.next(hdr);
assertEquals(114, buffer.capacity()); // length of the packet should match
assertEquals(114, hdr.getCaplen()); // Should match within the header too
assertEquals(114, hdr.getLen()); // Should match within the header too
// System.out.println(new Date(hdr.getSeconds() * 1000).toString());
pcap.close();
}
/** Test compile no pcap null ptr handling. */
public void testCompileNoPcapNullPtrHandling() {
try {
Pcap.compileNoPcap(1, 1, null, null, 1, 1);
fail("Expected a NULL pointer exception.");
} catch (NullPointerException e) {
// OK
}
}
/** Test data link name to val null ptr handling. */
public void testDataLinkNameToValNullPtrHandling() {
try {
Pcap.datalinkNameToVal(null);
fail("Expected a NULL pointer exception.");
} catch (NullPointerException e) {
// OK
}
}
/** Test pcap open offline null ptr handling. */
public void testPcapOpenOfflineNullPtrHandling() {
try {
Pcap.openOffline(null, null);
fail("Expected a NULL pointer exception.");
} catch (NullPointerException e) {
// OK
}
}
/** Test free code null ptr handling. */
public void testFreeCodeNullPtrHandling() {
try {
Pcap.freecode(null);
fail("Expected a NULL pointer exception.");
} catch (NullPointerException e) {
// OK
}
}
/** Test find all devs null ptr handling. */
public void testFindAllDevsNullPtrHandling() {
try {
Pcap.findAllDevs(null, null);
fail("Expected a NULL pointer exception.");
} catch (NullPointerException e) {
// OK
}
}
/** Test free all devs null ptr handling. */
public void testFreeAllDevsNullPtrHandling() {
try {
Pcap.freeAllDevs(null, (StringBuilder) null);
fail("Expected a NULL pointer exception.");
} catch (NullPointerException e) {
// OK
}
}
/** Test find all devs. */
public void testFindAllDevs() {
List<PcapIf> devs = new ArrayList<PcapIf>(); // List filled in by
// findAllDevs
int r = Pcap.findAllDevs(devs, errbuf);
assertEquals(errbuf.toString(), 0, r);
assertFalse(devs.isEmpty());
// System.out.println(devs);
}
/** Test open offline and close. */
public void testOpenOfflineAndClose() {
Pcap pcap = Pcap.openOffline(fname, 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());
}
};
assertEquals("Expected to receive exactly 10 packets", 10, pcap.dispatch(10, handler, "Hello"));
pcap.close();
}
/**
* Test open live and datalink and close.
*
* @throws SocketException the socket exception
* @throws InterruptedException the interrupted exception
*/
public void testOpenLiveAndDatalinkAndClose() throws SocketException, InterruptedException {
// System.out.println(System.getProperty("os.name"));
Pcap pcap = Pcap.openLive(device, 101, 1, 60, errbuf);
assertNotNull(errbuf.toString(), pcap);
// Physical field initialized from JNI space
assertFalse("0".equals(pcap.toString()));
// Check linklayer 1 is for DLT_EN10MB
// assertEquals(113, pcap.datalink());
pcap.close();
try {
pcap.close();
fail();
} catch (IllegalStateException e) {
// Expecting this exception on second call to close()
}
}
/** SKI ptest dumper. */
public void SKIPtestDumper() {
gen.start(); // Generate network traffic - async method
System.out.printf("tmpFile=%s\n", tmpFile.getAbsoluteFile());
Pcap pcap = Pcap.openLive(device, snaplen, promisc, oneSecond, errbuf);
assertNotNull(errbuf.toString(), pcap);
PcapDumper dumper = pcap.dumpOpen(tmpFile.getAbsolutePath());
assertNotNull(pcap.getErr(), dumper);
PcapHandler<PcapDumper> dumpHandler =
new PcapHandler<PcapDumper>() {
public void nextPacket(
PcapDumper dumper,
long seconds,
int useconds,
int caplen,
int len,
ByteBuffer buffer) {
dumper.dump(seconds, useconds, caplen, len, buffer);
}
};
pcap.loop(10, dumpHandler, dumper);
assertTrue("Empty dump file " + tmpFile.getAbsolutePath(), tmpFile.length() > 0);
// System.out.printf("Temp dumpfile size=%s\n", tmpFile.length());
pcap.close();
}
/**
* 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();
}
/**
* Test errbuf.
*
* @throws SocketException the socket exception
* @throws InterruptedException the interrupted exception
*/
public void testErrbuf() throws SocketException, InterruptedException {
// Test using a bogus device name that's sure to fail
errbuf.append("def"); // Set dummy message and it should be replaced
Pcap pcap = Pcap.openLive("abc", 101, 1, 60, errbuf);
assertNull(pcap);
assertFalse(
"Our pre-initialized error message should have been cleared",
"def".equals(errbuf.toString()));
assertTrue("Error buffer should contain an error message", errbuf.length() != 0);
}
/** _test stats. */
public void _testStats() {
PcapStat stats = new PcapStat();
Pcap pcap = Pcap.openLive(device, snaplen, promisc, oneSecond, errbuf);
assertNotNull(errbuf.toString(), pcap);
pcap.loop(5, doNothingHandler, null);
pcap.stats(stats);
// System.out.printf("stats=%s\n", stats.toString());
pcap.loop(5, doNothingHandler, null);
pcap.stats(stats);
// System.out.printf("stats=%s\n", stats.toString());
pcap.close();
}
/** Test pcap dlt and do name to value comparison. */
public void testPcapDLTAndDoNameToValueComparison() {
int match = 0; // counts how many constants compared OK
for (PcapDLT c : PcapDLT.values()) {
int dlt = c.value;
String libName = Pcap.datalinkValToName(dlt);
if (libName == null) {
// System.out.printf("no dlt: dlt=%d enum=%s\n", dlt, c.toString());
continue;
}
if (libName.equals(c.name())) {
match++;
// System.out.printf("matched: dlt=%d enum=%s pcap=%s desc=%s\n", dlt, c
// .toString(), libName, c.description);
} else {
// System.out.printf("unmatched: dlt=%d enum=%s pcap=%s desc=%s\n", dlt,
// c
// .toString(), libName, c.description);
}
}
// System.out.println("Have " + match + " matches out of "
// + PcapDLT.values().length);
assertTrue("Something is wrong, most constants should match native pcap library", match > 20);
// for (int dlt = 0; dlt < 100; dlt ++) {
// String libName = Pcap.datalinkValToName(dlt);
// PcapDLT c = PcapDLT.valueOf(dlt);
//
// if (c == null && libName != null) {
// System.out.printf("We don't have dlt=%d pcap=%s\n", dlt, libName);
// }
// }
}
/**
* Creates and starts up the background thread while synchronizing with the background thread. The
* user can be assured that when this method returns, the background thread has been started and
* has entered its Runnable.run method.
*
* @throws InterruptedException if the synchronization between threads was interrupted
*/
public void start() throws InterruptedException {
if (thread != null) {
stop();
}
/*
* Use our own Runnable in order to synchronize the start of the thread.
* We delegate to the user overriden run() method after the setup
* synching is done.
*/
thread =
new Thread(
new Runnable() {
public void run() {
PcapTask.this.run();
thread = null; // Cleanup
}
},
(user != null) ? user.toString() : pcap.toString());
thread.setDaemon(true);
thread.start();
}
/** Test pcap dumper using dispatch. */
public void testPcapDumperUsingDispatch() {
Pcap pcap = Pcap.openOffline(fname, errbuf);
assertNotNull(errbuf.toString(), pcap);
PcapDumper dumper = pcap.dumpOpen(tmpFile.getPath());
assertNotNull(pcap.getErr(), dumper);
PcapHandler<PcapDumper> handler =
new PcapHandler<PcapDumper>() {
public void nextPacket(
PcapDumper dumper,
long seconds,
int useconds,
int caplen,
int len,
ByteBuffer buffer) {
dumper.dump(seconds, useconds, caplen, len, buffer);
}
};
/*
* Our test file is small, about 24K bytes in size, should fit inside a
* buffer full.
*/
int r = pcap.dispatch(Pcap.DISPATCH_BUFFER_FULL, handler, dumper);
assertTrue("Something happened in dispatch", r == Pcap.OK);
dumper.close();
pcap.close();
// System.out.printf("%s: tmp=%d, source=%d\n", tmpFile.getName(), tmpFile
// .length(), new File(fname).length());
//
assertEquals(
"dumped file and source file lengths don't match",
tmpFile.length(),
new File(fname).length());
}
