/** 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 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 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());
}
/** Test pcap dumper using loop. */
public void testPcapDumperUsingLoop() {
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);
}
};
int r = pcap.loop(Pcap.LOOP_INFINATE, handler, dumper);
assertTrue("Something happened in the loop", 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());
}