/**
* Link event triggered by FUSE.
*
* @param pid PID of the triggering process.
* @param originalFilePath The original file path.
* @param linkPath Path to link to.
*/
public void link(int pid, String originalFilePath, String linkPath) {
checkProgramTree(Integer.toString(pid));
originalFilePath = sanitizePath(originalFilePath);
linkPath = sanitizePath(linkPath);
long now = System.currentTimeMillis();
File link = createLinkVertex(linkPath);
putVertex(link);
File original = createFileVertex(originalFilePath);
putVertex(original);
WasDerivedFrom linkEdge = new WasDerivedFrom(original, link);
linkEdge.addAnnotation("operation", "link");
linkEdge.addAnnotation("endtime", Long.toString(now));
putEdge(linkEdge);
// Add the link to the links map.
links.put(linkPath, originalFilePath);
}
/**
* ReadLink event triggered by FUSE.
*
* @param pid PID of the triggering process.
* @param iotime IO time of the operation.
* @param path Path indicating target file.
*/
public void readlink(int pid, int iotime, String path) {
checkProgramTree(Integer.toString(pid));
path = sanitizePath(path);
// Create the file artifact and populate the annotations with file information.
long now = System.currentTimeMillis();
File linkFile = createLinkVertex(path);
putVertex(linkFile);
Used edge = new Used((Program) localCache.get(Integer.toString(pid)), linkFile);
edge.addAnnotation("endtime", Long.toString(now));
edge.addAnnotation("operation", "readlink");
putEdge(edge);
// If the given path represents a link, then perform the same operation on the
// artifact to which the link points.
if (links.containsKey(path)) {
read(pid, iotime, links.get(path), 0);
}
}
/**
* Rename event triggered by FUSE.
*
* @param pid PID of the triggering process.
* @param iotime IO time of the operation.
* @param pathfrom The source path.
* @param pathto The destination path.
* @param link An integer used to indicate whether the target was a link or not.
* @param done An intiger used to indicate whether this event was triggered before or after the
* rename operation.
*/
public void rename(int pid, int iotime, String pathfrom, String pathto, int link, int done) {
checkProgramTree(Integer.toString(pid));
pathfrom = sanitizePath(pathfrom);
pathto = sanitizePath(pathto);
long now = System.currentTimeMillis();
// 'done' is used to indicate whether this is a pre-rename or a post-rename
// call. In pre-rename, a Used edge is created from the process to the old
// file. In post-rename, a WasGeneratedBy edge is created from the process
// to the new file and a WasDerivedEdge created between the two file
// artifacts.
if (done == 0) {
// Create file artifact depending on whether this is a link or not.
// Link artifacts are created differently to avoid recursion that may
// cause FUSE to crash.
File fileVertex = (link == 1) ? createLinkVertex(pathfrom) : createFileVertex(pathfrom);
putVertex(fileVertex);
// Put the file artifact in the localCache to be removed on post-rename.
localCache.put(pathfrom, fileVertex);
Used edge = new Used((Program) localCache.get(Integer.toString(pid)), fileVertex);
edge.addAnnotation("endtime", Long.toString(now));
putEdge(edge);
} else {
// Create file artifact depending on whether this is a link or not.
// Link artifacts are created differently to avoid recursion that may
// cause FUSE to crash.
File fileVertex = (link == 1 ? createLinkVertex(pathto) : createFileVertex(pathto));
putVertex(fileVertex);
WasGeneratedBy writeEdge =
new WasGeneratedBy(fileVertex, (Program) localCache.get(Integer.toString(pid)));
writeEdge.addAnnotation("endtime", Long.toString(now));
putEdge(writeEdge);
WasDerivedFrom renameEdge =
new WasDerivedFrom(fileVertex, (File) localCache.remove(pathfrom));
renameEdge.addAnnotation("iotime", Integer.toString(iotime));
renameEdge.addAnnotation("endtime", Long.toString(now));
renameEdge.addAnnotation("operation", "rename");
putEdge(renameEdge);
if (links.containsKey(pathfrom)) {
// If the rename is on a link then update the link name.
String linkedLocation = links.get(pathfrom);
links.remove(pathfrom);
links.put(pathto, linkedLocation);
}
}
}
/**
* Read event triggered by FUSE.
*
* @param pid PID of the triggering process.
* @param iotime IO time of the operation.
* @param path Path indicating target file.
* @param link An integer used to indicate whether the target was a link or not.
*/
public void read(int pid, int iotime, String path, int link) {
checkProgramTree(Integer.toString(pid));
path = sanitizePath(path);
long now = System.currentTimeMillis();
// Create file artifact depending on whether this is a link or not.
// Link artifacts are created differently to avoid recursion that may
// cause FUSE to crash.
File fileVertex = (link == 1) ? createLinkVertex(path) : createFileVertex(path);
putVertex(fileVertex);
Used edge = new Used((Program) localCache.get(Integer.toString(pid)), fileVertex);
edge.addAnnotation("iotime", Integer.toString(iotime));
edge.addAnnotation("endtime", Long.toString(now));
putEdge(edge);
// If the given path represents a link, then perform the same operation on the
// artifact to which the link points.
if (link == 1 && links.containsKey(path)) {
read(pid, iotime, links.get(path), 0);
}
}
@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;
}