private void checkProgramTree(String pid) {
// Check the process tree to ensure that the given PID exists in it. If not,
// then add it and recursively check its parents so that this process
// eventually joins the main process tree.
try {
if (localCache.containsKey(pid)) {
return;
}
Program processVertex = createProgramVertex(pid);
if (processVertex == null) {
return;
}
Agent tempAgent = new Agent();
tempAgent.addAnnotation("uid", processVertex.removeAnnotation("uid"));
tempAgent.addAnnotation("gid", processVertex.removeAnnotation("gid"));
putVertex(processVertex);
putVertex(tempAgent);
putEdge(new WasControlledBy(processVertex, tempAgent));
localCache.put(pid, processVertex);
String ppid = processVertex.getAnnotation("ppid");
if (Integer.parseInt(ppid) >= 0) {
checkProgramTree(ppid);
WasTriggeredBy triggerEdge =
new WasTriggeredBy((Program) localCache.get(pid), (Program) localCache.get(ppid));
putEdge(triggerEdge);
}
} catch (Exception exception) {
Logger.getLogger(LinuxFUSE.class.getName()).log(Level.SEVERE, null, exception);
}
}
@Override
public boolean launch(String arguments) {
if (arguments == null) {
return false;
}
try {
localHostAddress = InetAddress.getLocalHost().getHostAddress();
localHostName = InetAddress.getLocalHost().getHostName();
} catch (Exception ex) {
localHostAddress = null;
localHostName = null;
Logger.getLogger(LinuxFUSE.class.getName()).log(Level.WARNING, null, ex);
}
try {
BufferedReader confReader = new BufferedReader(new FileReader("/etc/fuse.conf"));
String line;
boolean found = false;
while ((line = confReader.readLine()) != null) {
// Check if the line "user_allow_other" exists in the config file.
if (line.trim().equalsIgnoreCase("user_allow_other")) {
found = true;
break;
}
}
if (!found) {
// File /etc/fuse.conf not configured correctly.
return false;
}
} catch (Exception ex) {
// File /etc/fuse.conf does not exist or is configured incorrectly.
Logger.getLogger(LinuxFUSE.class.getName()).log(Level.WARNING, null, ex);
return false;
}
try {
// The argument to this reporter is the mount point for FUSE.
mountPoint = arguments;
localCache = Collections.synchronizedMap(new HashMap<String, AbstractVertex>());
links = Collections.synchronizedMap(new HashMap<String, String>());
// Create a new directory as the mount point for FUSE.
java.io.File mount = new java.io.File(mountPoint);
if (mount.exists()) {
return false;
} else {
int exitValue = Runtime.getRuntime().exec("mkdir " + mountPoint).waitFor();
if (exitValue != 0) {
return false;
}
}
mountPath = (new java.io.File(mountPoint)).getAbsolutePath();
myPID = ManagementFactory.getRuntimeMXBean().getName().split("@")[0].trim();
// Load the native library.
System.loadLibrary("LinuxFUSE");
// Get the system boot time from the proc filesystem.
boottime = 0;
try {
BufferedReader boottimeReader = new BufferedReader(new FileReader("/proc/stat"));
String line;
while ((line = boottimeReader.readLine()) != null) {
StringTokenizer st = new StringTokenizer(line);
if (st.nextToken().equals("btime")) {
boottime = Long.parseLong(st.nextToken()) * 1000;
break;
} else {
continue;
}
}
boottimeReader.close();
} catch (Exception exception) {
Logger.getLogger(LinuxFUSE.class.getName()).log(Level.SEVERE, null, exception);
}
// Create an initial root vertex which will be used as the root of the
// process tree.
Program rootVertex = new Program();
rootVertex.addAnnotation("pidname", "System");
rootVertex.addAnnotation("pid", "0");
rootVertex.addAnnotation("ppid", "0");
String stime_readable =
new java.text.SimpleDateFormat(simpleDatePattern).format(new java.util.Date(boottime));
String stime = Long.toString(boottime);
rootVertex.addAnnotation("boottime_unix", stime);
rootVertex.addAnnotation("boottime_simple", stime_readable);
localCache.put("0", rootVertex);
putVertex(rootVertex);
String path = "/proc";
String currentProgram;
java.io.File folder = new java.io.File(path);
java.io.File[] listOfFiles = folder.listFiles();
// Build the process tree using the directories under /proc/. Directories
// which have a numeric name represent processes.
for (int i = 0; i < listOfFiles.length; i++) {
if (listOfFiles[i].isDirectory()) {
currentProgram = listOfFiles[i].getName();
try {
Integer.parseInt(currentProgram);
Program processVertex = createProgramVertex(currentProgram);
String ppid = (String) processVertex.getAnnotation("ppid");
localCache.put(currentProgram, processVertex);
putVertex(processVertex);
if (Integer.parseInt(ppid) >= 0) {
if (((Program) localCache.get(ppid) != null) && (processVertex != null)) {
WasTriggeredBy triggerEdge =
new WasTriggeredBy(processVertex, (Program) localCache.get(ppid));
putEdge(triggerEdge);
}
}
} catch (Exception exception) {
continue;
}
}
}
Runnable FUSEThread =
new Runnable() {
public void run() {
try {
// Launch FUSE from the native library.
launchFUSE(mountPoint);
} catch (Exception exception) {
Logger.getLogger(LinuxFUSE.class.getName()).log(Level.SEVERE, null, exception);
}
}
};
new Thread(FUSEThread, "LinuxFUSE-Thread").start();
} catch (Exception exception) {
Logger.getLogger(LinuxFUSE.class.getName()).log(Level.SEVERE, null, exception);
return false;
}
return true;
}