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Extraction per image now takes place in a single thread

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Previously made one thread per volume.
This commit is contained in:
0xNF 2012-12-06 10:32:46 -05:00
parent cd3d1fc4f4
commit 2bb12c1176
1 changed files with 114 additions and 47 deletions
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161
Core/src/org/sleuthkit/autopsy/directorytree/ExtractUnallocAction.java
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@ -55,8 +55,8 @@ public final class ExtractUnallocAction extends AbstractAction {
private final List<UnallocStruct> LstUnallocs = new ArrayList<UnallocStruct>();
private static final List<String> lockedVols = new ArrayList<String>();
private int numDone = 0;
private static boolean runningOnImage = false;
private static final List<Long> lockedImages = new ArrayList<Long>();
private long currentImage = 0L;
private static final Logger logger = Logger.getLogger(ExtractUnallocAction.class.getName());
private boolean isImage = false;
@ -68,6 +68,7 @@ public final class ExtractUnallocAction extends AbstractAction {
public ExtractUnallocAction(String title, Image img) {
super(title);
isImage = true;
currentImage = img.getId();
if (hasVolumeSystem(img)) {
for (Volume v : getVolumes(img)) {
UnallocStruct us = new UnallocStruct(v);
@ -87,29 +88,36 @@ public final class ExtractUnallocAction extends AbstractAction {
@Override
public void actionPerformed(ActionEvent e) {
if (LstUnallocs != null && LstUnallocs.size() > 0) {
if (runningOnImage) {
if (lockedImages.contains(currentImage)) {
JOptionPane.showMessageDialog(new Frame(), "Unallocated Space is already running on this Image. Please select a different Image.");
return;
}
List<UnallocStruct> copyList = new ArrayList<UnallocStruct>(){{
addAll(LstUnallocs);
}};
for (UnallocStruct u : LstUnallocs) {
String UnallocName = u.ImageName + "-Unalloc-" + u.ImageId + "-" + u.VolumeId + ".dat";
if (u.llf != null && u.llf.size() > 0 && !lockedVols.contains(UnallocName)) {
//Format for single Unalloc File is ImgName-Unalloc-ImgObjectID-VolumeID.dat
File unalloc = new File(Case.getCurrentCase().getCaseDirectory() + File.separator + "Export" + File.separator + UnallocName);
if (unalloc.exists()) {
int res = JOptionPane.showConfirmDialog(new Frame(), "The Unalloc File for this volume, " + UnallocName + " already exists, do you want to replace it?");
if (u.llf != null && u.llf.size() > 0 && !lockedVols.contains(u.getFileName())) {
//Format for single Unalloc File is ImgName-Unalloc-ImgObjectID-VolumeID.dat
if (u.FileInstance.exists()) {
int res = JOptionPane.showConfirmDialog(new Frame(), "The Unalloc File for this volume, " + u.getFileName() + " already exists, do you want to replace it?");
if (res == JOptionPane.YES_OPTION) {
unalloc.delete();
u.FileInstance.delete();
} else {
return;
copyList.remove(u);
}
}
ExtractUnallocWorker uw = new ExtractUnallocWorker(unalloc, u);
uw.execute();
if (!isImage) {
ExtractUnallocWorker uw = new ExtractUnallocWorker(u);
uw.execute();
}
} else {
logger.log(Level.WARNING, "Tried to get unallocated content from volume ID " + u.VolumeId + ", but its list of unallocated files was empty or null");
}
}
if (isImage) {
ExtractUnallocWorker uw = new ExtractUnallocWorker(copyList);
uw.execute();
}
}
}
@ -135,61 +143,99 @@ public final class ExtractUnallocAction extends AbstractAction {
*/
private class ExtractUnallocWorker extends SwingWorker<Integer, Integer> {
private File path;
private ProgressHandle progress;
private boolean canceled = false;
private UnallocStruct us;
private List<UnallocStruct> lus = new ArrayList<UnallocStruct>();
private File currentlyProcessing;
private int totalSizeinMegs;
ExtractUnallocWorker(File path, UnallocStruct us) {
this.path = path;
if(isImage){
runningOnImage = true;
ExtractUnallocWorker(UnallocStruct us) {
this.lus.add(us);
//Getting the total megs this worker is going to be doing
if (!lockedVols.contains(us.getFileName())) {
totalSizeinMegs = toMb(us.sizeInBytes());
lockedVols.add(us.getFileName());
}
}
ExtractUnallocWorker(List<UnallocStruct> lst) {
//Getting the total megs this worker is going to be doing
long totalBytes = 0;
for (UnallocStruct lu : lst) {
if (!lockedVols.contains(lu.getFileName())) {
totalBytes += lu.sizeInBytes();
lockedVols.add(lu.getFileName());
this.lus.add(lu);
}
}
lockedVols.add(path.getName());
this.us = us;
totalSizeinMegs = toMb(totalBytes);
lockedImages.add(currentImage);
}
private int toMb(long bytes) {
if (bytes > 1024 && (bytes / 1024.0) <= Double.MAX_VALUE) {
double Mb = ((bytes / 1024.0)/1024.0);//Bytes -> Megabytes
if (((bytes / 1024.0)/1024.0) <= Integer.MAX_VALUE) {
return (int) Math.floor(Mb);
}
}
return 0;
}
@Override
protected Integer doInBackground() {
try {
progress = ProgressHandleFactory.createHandle("Extracting " + path.getName(), new Cancellable() {
progress = ProgressHandleFactory.createHandle("Extracting Unallocated Space", new Cancellable() {
@Override
public boolean cancel() {
logger.log(Level.INFO, "Canceling extraction of Unalloc file " + path.getName());
logger.log(Level.INFO, "Canceling extraction of unallocated space");
canceled = true;
if (progress != null) {
progress.setDisplayName(path.getName() + " (Cancelling...)");
progress.setDisplayName("Extracting Unallocated Space" + " (Cancelling...)");
}
return true;
}
});
FileOutputStream fos = new FileOutputStream(path);
});
int MAX_BYTES = 8192;
byte[] buf = new byte[MAX_BYTES]; //read 8kb at a time
logger.log(Level.INFO, "Writing Unalloc file to " + path.getPath());
byte[] buf = new byte[MAX_BYTES]; //read 8kb at a time
progress.start(us.size());
int count = 0;
for (LayoutFile f : us.getLayouts()) {
//Begin the actual File IO
progress.start(totalSizeinMegs);
int kbs = 0; //Each completion of the while loop adds one to kbs. 8kb * 128 = 1mb.
int mbs = 0; //Increments every 128 kbs
for (UnallocStruct u : this.lus) {
currentlyProcessing = u.getFile();
logger.log(Level.INFO, "Writing Unalloc file to " + currentlyProcessing.getPath());
FileOutputStream fos = new FileOutputStream(currentlyProcessing);
int count = 1;
for (LayoutFile f : u.getLayouts()) {
long offset = 0L;
while (offset != f.getSize() && !canceled) {
offset += f.read(buf, offset, MAX_BYTES); //Offset + Bytes read
fos.write(buf);
if (++kbs % 128 == 0) {
mbs++;
progress.progress("processing " + mbs + " of " + totalSizeinMegs + " MBs", mbs);
}
}
progress.progress("processing block " + ++count + "of " + us.size(), count);
count++;
}
fos.flush();
fos.close();
if (canceled) {
u.getFile().delete();
logger.log(Level.INFO, "Canceled extraction of " + u.getFile().getName() + " and deleted file");
} else {
logger.log(Level.INFO, "Finished writing unalloc file " + u.getFile().getPath());
}
lockedVols.remove(u.FileName);
}
progress.finish();
fos.flush();
fos.close();
if(canceled){
path.delete();
logger.log(Level.INFO, "Canceled extraction of " + path.getName() + " and deleted file");
}
else{
logger.log(Level.INFO, "Finished writing unalloc file " + path.getPath());
}
} catch (IOException ioe) {
logger.log(Level.WARNING, "Could not create Unalloc File; error writing file", ioe);
return -1;
@ -202,10 +248,8 @@ public final class ExtractUnallocAction extends AbstractAction {
@Override
protected void done(){
lockedVols.remove(path.getName());
if(++numDone == LstUnallocs.size()){
runningOnImage = false;
numDone = 0;
if(isImage){
lockedImages.remove(currentImage);
}
}
}
@ -358,7 +402,10 @@ public final class ExtractUnallocAction extends AbstractAction {
private long VolumeId;
private long ImageId;
private String ImageName;
private String FileName;
private File FileInstance;
/**
* Contingency constructor in event no VolumeSystem exists on an Image.
* @param img Image file to be analyzed
@ -368,6 +415,8 @@ public final class ExtractUnallocAction extends AbstractAction {
this.VolumeId = 0;
this.ImageId = img.getId();
this.ImageName = img.getName();
this.FileName = this.ImageName + "-Unalloc-" + this.ImageId + "-" + 0 + ".dat";
this.FileInstance = new File(Case.getCurrentCase().getCaseDirectory() + File.separator + "Export" + File.separator + this.FileName);
}
/**
@ -384,6 +433,8 @@ public final class ExtractUnallocAction extends AbstractAction {
this.ImageName = "";
this.ImageId = 0;
}
this.FileName = this.ImageName + "-Unalloc-" + this.ImageId + "-" + VolumeId + ".dat";
this.FileInstance = new File(Case.getCurrentCase().getCaseDirectory() + File.separator + "Export" + File.separator + this.FileName);
this.llf = getUnallocFiles(volu);
Collections.sort(llf, new SortObjId());
}
@ -392,6 +443,14 @@ public final class ExtractUnallocAction extends AbstractAction {
int size() {
return llf.size();
}
long sizeInBytes(){
long size = 0L;
for(LayoutFile f : llf){
size+= f.getSize();
}
return size;
}
long getVolumeId(){
return this.VolumeId;
}
@ -405,6 +464,14 @@ public final class ExtractUnallocAction extends AbstractAction {
return this.llf;
}
String getFileName(){
return this.FileName;
}
File getFile(){
return this.FileInstance;
}
}