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Write ZIp files to more generic names. Saw errors with paths with C: in them

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This commit is contained in:
Brian Carrier 2014-06-06 10:54:21 -04:00
parent 2767542a1a
commit 09aff176ac
1 changed files with 104 additions and 91 deletions
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195
Core/src/org/sleuthkit/autopsy/modules/sevenzip/SevenZipIngestModule.java
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@ -70,9 +70,9 @@ public final class SevenZipIngestModule implements FileIngestModule {
private static final Logger logger = Logger.getLogger(SevenZipIngestModule.class.getName()); private static final Logger logger = Logger.getLogger(SevenZipIngestModule.class.getName());
private IngestServices services = IngestServices.getInstance(); private IngestServices services = IngestServices.getInstance();
static final String[] SUPPORTED_EXTENSIONS = {"zip", "rar", "arj", "7z", "7zip", "gzip", "gz", "bzip2", "tar", "tgz",}; // "iso"}; NON-NLS static final String[] SUPPORTED_EXTENSIONS = {"zip", "rar", "arj", "7z", "7zip", "gzip", "gz", "bzip2", "tar", "tgz",}; // "iso"}; NON-NLS
private String unpackDir; //relative to the case, to store in db private String moduleDirRelative; //relative to the case, to store in db
private String unpackDirPath; //absolute, to extract to private String moduleDirAbsolute; //absolute, to extract to
private FileManager fileManager;
//encryption type strings //encryption type strings
private static final String ENCRYPTION_FILE_LEVEL = NbBundle.getMessage(SevenZipIngestModule.class, private static final String ENCRYPTION_FILE_LEVEL = NbBundle.getMessage(SevenZipIngestModule.class,
"SevenZipIngestModule.encryptionFileLevel"); "SevenZipIngestModule.encryptionFileLevel");
@ -103,22 +103,21 @@ public final class SevenZipIngestModule implements FileIngestModule {
final Case currentCase = Case.getCurrentCase(); final Case currentCase = Case.getCurrentCase();
unpackDir = Case.getModulesOutputDirRelPath() + File.separator + ArchiveFileExtractorModuleFactory.getModuleName(); moduleDirRelative = Case.getModulesOutputDirRelPath() + File.separator + ArchiveFileExtractorModuleFactory.getModuleName();
unpackDirPath = currentCase.getModulesOutputDirAbsPath() + File.separator + ArchiveFileExtractorModuleFactory.getModuleName(); moduleDirAbsolute = currentCase.getModulesOutputDirAbsPath() + File.separator + ArchiveFileExtractorModuleFactory.getModuleName();
fileManager = currentCase.getServices().getFileManager();
File unpackDirPathFile = new File(moduleDirAbsolute);
File unpackDirPathFile = new File(unpackDirPath);
if (!unpackDirPathFile.exists()) { if (!unpackDirPathFile.exists()) {
try { try {
unpackDirPathFile.mkdirs(); unpackDirPathFile.mkdirs();
} catch (SecurityException e) { } catch (SecurityException e) {
logger.log(Level.SEVERE, "Error initializing output dir: " + unpackDirPath, e); //NON-NLS logger.log(Level.SEVERE, "Error initializing output dir: " + moduleDirAbsolute, e); //NON-NLS
String msg = NbBundle.getMessage(this.getClass(), String msg = NbBundle.getMessage(this.getClass(),
"SevenZipIngestModule.init.errInitModule.msg", ArchiveFileExtractorModuleFactory.getModuleName()); "SevenZipIngestModule.init.errInitModule.msg", ArchiveFileExtractorModuleFactory.getModuleName());
String details = NbBundle.getMessage(this.getClass(), String details = NbBundle.getMessage(this.getClass(),
"SevenZipIngestModule.init.errInitModule.details", "SevenZipIngestModule.init.errInitModule.details",
unpackDirPath, e.getMessage()); moduleDirAbsolute, e.getMessage());
services.postMessage(IngestMessage.createErrorMessage(ArchiveFileExtractorModuleFactory.getModuleName(), msg, details)); services.postMessage(IngestMessage.createErrorMessage(ArchiveFileExtractorModuleFactory.getModuleName(), msg, details));
throw e; throw e;
} }
@ -177,8 +176,10 @@ public final class SevenZipIngestModule implements FileIngestModule {
List<AbstractFile> unpackedFiles = unpack(abstractFile); List<AbstractFile> unpackedFiles = unpack(abstractFile);
if (!unpackedFiles.isEmpty()) { if (!unpackedFiles.isEmpty()) {
sendNewFilesEvent(abstractFile, unpackedFiles); //currently sending a single event for all new files
context.addFiles(unpackedFiles); services.fireModuleContentEvent(new ModuleContentEvent(abstractFile));
context.scheduleFiles(unpackedFiles);
} }
return ProcessResult.OK; return ProcessResult.OK;
@ -190,10 +191,6 @@ public final class SevenZipIngestModule implements FileIngestModule {
refCounter.decrementAndGet(jobId); refCounter.decrementAndGet(jobId);
} }
private void sendNewFilesEvent(AbstractFile archive, List<AbstractFile> unpackedFiles) {
//currently sending a single event for all new files
services.fireModuleContentEvent(new ModuleContentEvent(archive));
}
/** /**
* Get local relative path to the unpacked archive root * Get local relative path to the unpacked archive root
@ -212,7 +209,7 @@ public final class SevenZipIngestModule implements FileIngestModule {
* @return * @return
*/ */
private String getLocalRootAbsPath(String localRootRelPath) { private String getLocalRootAbsPath(String localRootRelPath) {
return unpackDirPath + File.separator + localRootRelPath; return moduleDirAbsolute + File.separator + localRootRelPath;
} }
/** /**
@ -315,8 +312,8 @@ public final class SevenZipIngestModule implements FileIngestModule {
final ISimpleInArchive simpleInArchive = inArchive.getSimpleInterface(); final ISimpleInArchive simpleInArchive = inArchive.getSimpleInterface();
//setup the archive local root folder //setup the archive local root folder
final String uniqueFileName = getUniqueName(archiveFile); final String uniqueArchiveFileName = getUniqueName(archiveFile);
final String localRootAbsPath = getLocalRootAbsPath(uniqueFileName); final String localRootAbsPath = getLocalRootAbsPath(uniqueArchiveFileName);
final File localRoot = new File(localRootAbsPath); final File localRoot = new File(localRootAbsPath);
if (!localRoot.exists()) { if (!localRoot.exists()) {
try { try {
@ -329,15 +326,16 @@ public final class SevenZipIngestModule implements FileIngestModule {
} }
//initialize tree hierarchy to keep track of unpacked file structure //initialize tree hierarchy to keep track of unpacked file structure
UnpackedTree uTree = new UnpackedTree(unpackDir + "/" + uniqueFileName, archiveFile, fileManager); UnpackedTree unpackedTree = new UnpackedTree(moduleDirRelative + "/" + uniqueArchiveFileName, archiveFile);
long freeDiskSpace = services.getFreeDiskSpace(); long freeDiskSpace = services.getFreeDiskSpace();
//unpack and process every item in archive //unpack and process every item in archive
int itemNumber = 0; int itemNumber = 0;
for (ISimpleInArchiveItem item : simpleInArchive.getArchiveItems()) { for (ISimpleInArchiveItem item : simpleInArchive.getArchiveItems()) {
String extractedPath = item.getPath(); String pathInArchive = item.getPath();
if (extractedPath == null || extractedPath.isEmpty()) {
if (pathInArchive == null || pathInArchive.isEmpty()) {
//some formats (.tar.gz) may not be handled correctly -- file in archive has no name/path //some formats (.tar.gz) may not be handled correctly -- file in archive has no name/path
//handle this for .tar.gz and tgz but assuming the child is tar, //handle this for .tar.gz and tgz but assuming the child is tar,
//otherwise, unpack using itemNumber as name //otherwise, unpack using itemNumber as name
@ -360,18 +358,18 @@ public final class SevenZipIngestModule implements FileIngestModule {
} }
if (useName == null) { if (useName == null) {
extractedPath = "/" + archName + "/" + Integer.toString(itemNumber); pathInArchive = "/" + archName + "/" + Integer.toString(itemNumber);
} else { } else {
extractedPath = "/" + useName; pathInArchive = "/" + useName;
} }
String msg = NbBundle.getMessage(this.getClass(), "SevenZipIngestModule.unpack.unknownPath.msg", String msg = NbBundle.getMessage(this.getClass(), "SevenZipIngestModule.unpack.unknownPath.msg",
archiveFile.getName(), extractedPath); archiveFile.getName(), pathInArchive);
logger.log(Level.WARNING, msg); logger.log(Level.WARNING, msg);
} }
++itemNumber; ++itemNumber;
logger.log(Level.INFO, "Extracted item path: {0}", extractedPath); //NON-NLS logger.log(Level.INFO, "Extracted item path: {0}", pathInArchive); //NON-NLS
//check if possible zip bomb //check if possible zip bomb
if (isZipBombArchiveItemCheck(archiveFile.getName(), item)) { if (isZipBombArchiveItemCheck(archiveFile.getName(), item)) {
@ -379,9 +377,9 @@ public final class SevenZipIngestModule implements FileIngestModule {
} }
//find this node in the hierarchy, create if needed //find this node in the hierarchy, create if needed
UnpackedTree.Data uNode = uTree.find(extractedPath); UnpackedTree.UnpackedNode unpackedNode = unpackedTree.addNode(pathInArchive);
String fileName = uNode.getFileName(); String fileName = unpackedNode.getFileName();
//update progress bar //update progress bar
progress.progress(archiveFile.getName() + ": " + fileName, processedItems); progress.progress(archiveFile.getName() + ": " + fileName, processedItems);
@ -394,7 +392,7 @@ public final class SevenZipIngestModule implements FileIngestModule {
final boolean isDir = item.isFolder(); final boolean isDir = item.isFolder();
if (isEncrypted) { if (isEncrypted) {
logger.log(Level.WARNING, "Skipping encrypted file in archive: {0}", extractedPath); //NON-NLS logger.log(Level.WARNING, "Skipping encrypted file in archive: {0}", pathInArchive); //NON-NLS
hasEncrypted = true; hasEncrypted = true;
continue; continue;
} else { } else {
@ -423,9 +421,11 @@ public final class SevenZipIngestModule implements FileIngestModule {
} }
} }
final String localFileRelPath = uniqueFileName + File.separator + extractedPath; final String uniqueExtractedName = uniqueArchiveFileName + File.separator + (item.getItemIndex() / 1000) + File.separator + item.getItemIndex() + new File(pathInArchive).getName();
//final String localRelPath = unpackDir + File.separator + localFileRelPath; //final String localRelPath = unpackDir + File.separator + localFileRelPath;
final String localAbsPath = unpackDirPath + File.separator + localFileRelPath; final String localRelPath = moduleDirRelative + File.separator + uniqueExtractedName;
final String localAbsPath = moduleDirAbsolute + File.separator + uniqueExtractedName;
//create local dirs and empty files before extracted //create local dirs and empty files before extracted
File localFile = new java.io.File(localAbsPath); File localFile = new java.io.File(localAbsPath);
@ -443,10 +443,15 @@ public final class SevenZipIngestModule implements FileIngestModule {
} }
} }
} catch (SecurityException e) { } catch (SecurityException e) {
logger.log(Level.SEVERE, "Error setting up output path for unpacked file: {0}", extractedPath); //NON-NLS logger.log(Level.SEVERE, "Error setting up output path for unpacked file: {0}", pathInArchive); //NON-NLS
//TODO consider bail out / msg to the user //TODO consider bail out / msg to the user
} }
} }
// skip the rest of this loop if we couldn't create the file
if (localFile.exists() == false) {
continue;
}
final Date createTime = item.getCreationTime(); final Date createTime = item.getCreationTime();
final Date accessTime = item.getLastAccessTime(); final Date accessTime = item.getLastAccessTime();
@ -456,8 +461,8 @@ public final class SevenZipIngestModule implements FileIngestModule {
final long accesstime = accessTime == null ? 0L : accessTime.getTime() / 1000; final long accesstime = accessTime == null ? 0L : accessTime.getTime() / 1000;
//record derived data in unode, to be traversed later after unpacking the archive //record derived data in unode, to be traversed later after unpacking the archive
uNode.addDerivedInfo(size, !isDir, unpackedNode.addDerivedInfo(size, !isDir,
0L, createtime, accesstime, modtime); 0L, createtime, accesstime, modtime, localRelPath);
//unpack locally if a file //unpack locally if a file
if (!isDir) { if (!isDir) {
@ -477,11 +482,13 @@ public final class SevenZipIngestModule implements FileIngestModule {
//update units for progress bar //update units for progress bar
++processedItems; ++processedItems;
} //for every item in archive }
// add them to the DB. We wait until the end so that we have the metadata on all of the
// intermediate nodes since the order is not guaranteed
try { try {
uTree.createDerivedFiles(); unpackedTree.addDerivedFilesToCase();
unpackedFiles = uTree.getAllFileObjects(); unpackedFiles = unpackedTree.getAllFileObjects();
//check if children are archives, update archive depth tracking //check if children are archives, update archive depth tracking
for (AbstractFile unpackedFile : unpackedFiles) { for (AbstractFile unpackedFile : unpackedFiles) {
@ -658,7 +665,7 @@ public final class SevenZipIngestModule implements FileIngestModule {
} }
/** /**
* Representation of local directory tree of unpacked archive. Used to track * Representation of the files in the archive. Used to track
* of local tree file hierarchy, archive depth, and files created to easily * of local tree file hierarchy, archive depth, and files created to easily
* and reliably get parent AbstractFile for unpacked file. So that we don't * and reliably get parent AbstractFile for unpacked file. So that we don't
* have to depend on type of traversal of unpacked files handed to us by * have to depend on type of traversal of unpacked files handed to us by
@ -666,27 +673,30 @@ public final class SevenZipIngestModule implements FileIngestModule {
*/ */
private class UnpackedTree { private class UnpackedTree {
final String localPathRoot; final UnpackedNode rootNode;
final Data root; //dummy root to hold children
final FileManager fileManager;
UnpackedTree(String localPathRoot, AbstractFile archiveRoot, FileManager fileManager) { /**
this.localPathRoot = localPathRoot; *
this.fileManager = fileManager; * @param localPathRoot Path in module output folder that files will be saved to
this.root = new Data(); * @param archiveFile Archive file being extracted
this.root.setFile(archiveRoot); * @param fileManager
this.root.setFileName(archiveRoot.getName()); */
this.root.localRelPath = localPathRoot; UnpackedTree(String localPathRoot, AbstractFile archiveFile) {
this.rootNode = new UnpackedNode();
this.rootNode.setFile(archiveFile);
this.rootNode.setFileName(archiveFile.getName());
this.rootNode.localRelPath = localPathRoot;
} }
/** /**
* Tokenizes filePath passed in and traverses the dir structure, * Creates a node in the tree at the given path. Makes intermediate
* creating data nodes on the path way as needed * nodes if needed. If a node already exists at that path, it is
* returned.
* *
* @param filePath file path with 1 or more tokens separated by / * @param filePath file path with 1 or more tokens separated by /
* @return child node for the last file token in the filePath * @return child node for the last file token in the filePath
*/ */
Data find(String filePath) { UnpackedNode addNode(String filePath) {
String[] toks = filePath.split("[\\/\\\\]"); String[] toks = filePath.split("[\\/\\\\]");
List<String> tokens = new ArrayList<>(); List<String> tokens = new ArrayList<>();
for (int i = 0; i < toks.length; ++i) { for (int i = 0; i < toks.length; ++i) {
@ -694,28 +704,31 @@ public final class SevenZipIngestModule implements FileIngestModule {
tokens.add(toks[i]); tokens.add(toks[i]);
} }
} }
return find(root, tokens); return addNode(rootNode, tokens);
} }
/** /**
* recursive method that traverses the path * recursive method that traverses the path
* *
* @param tokenPath * @param tokenPath
* @return * @return
*/ */
private Data find(Data parent, List<String> tokenPath) { private UnpackedNode addNode(UnpackedNode parent, List<String> tokenPath) {
//base case // we found all of the tokens
if (tokenPath.isEmpty()) { if (tokenPath.isEmpty()) {
return parent; return parent;
} }
String childName = tokenPath.remove(0); //step towards base case // get the next name in the path and look it up
Data child = parent.getChild(childName); String childName = tokenPath.remove(0);
UnpackedNode child = parent.getChild(childName);
// create new node
if (child == null) { if (child == null) {
child = new Data(childName, parent); child = new UnpackedNode(childName, parent);
} }
return find(child, tokenPath);
// go down one more level
return addNode(child, tokenPath);
} }
/** /**
@ -726,7 +739,7 @@ public final class SevenZipIngestModule implements FileIngestModule {
*/ */
List<AbstractFile> getRootFileObjects() { List<AbstractFile> getRootFileObjects() {
List<AbstractFile> ret = new ArrayList<>(); List<AbstractFile> ret = new ArrayList<>();
for (Data child : root.children) { for (UnpackedNode child : rootNode.children) {
ret.add(child.getFile()); ret.add(child.getFile());
} }
return ret; return ret;
@ -740,15 +753,15 @@ public final class SevenZipIngestModule implements FileIngestModule {
*/ */
List<AbstractFile> getAllFileObjects() { List<AbstractFile> getAllFileObjects() {
List<AbstractFile> ret = new ArrayList<>(); List<AbstractFile> ret = new ArrayList<>();
for (Data child : root.children) { for (UnpackedNode child : rootNode.children) {
getAllFileObjectsRec(ret, child); getAllFileObjectsRec(ret, child);
} }
return ret; return ret;
} }
private void getAllFileObjectsRec(List<AbstractFile> list, Data parent) { private void getAllFileObjectsRec(List<AbstractFile> list, UnpackedNode parent) {
list.add(parent.getFile()); list.add(parent.getFile());
for (Data child : parent.children) { for (UnpackedNode child : parent.children) {
getAllFileObjectsRec(list, child); getAllFileObjectsRec(list, child);
} }
} }
@ -757,27 +770,22 @@ public final class SevenZipIngestModule implements FileIngestModule {
* Traverse the tree top-down after unzipping is done and create derived * Traverse the tree top-down after unzipping is done and create derived
* files for the entire hierarchy * files for the entire hierarchy
*/ */
void createDerivedFiles() throws TskCoreException { void addDerivedFilesToCase() throws TskCoreException {
for (Data child : root.children) { final FileManager fileManager = Case.getCurrentCase().getServices().getFileManager();
createDerivedFilesRec(child); for (UnpackedNode child : rootNode.children) {
addDerivedFilesToCaseRec(child, fileManager);
} }
} }
private void createDerivedFilesRec(Data node) throws TskCoreException { private void addDerivedFilesToCaseRec(UnpackedNode node, FileManager fileManager) throws TskCoreException {
final String fileName = node.getFileName(); final String fileName = node.getFileName();
final String localRelPath = node.getLocalRelPath();
final long size = node.getSize();
final boolean isFile = node.isIsFile();
final AbstractFile parent = node.getParent().getFile();
try { try {
DerivedFile df = fileManager.addDerivedFile(fileName, localRelPath, size, DerivedFile df = fileManager.addDerivedFile(fileName, node.getLocalRelPath(), node.getSize(),
node.getCtime(), node.getCrtime(), node.getAtime(), node.getMtime(), node.getCtime(), node.getCrtime(), node.getAtime(), node.getMtime(),
isFile, parent, "", ArchiveFileExtractorModuleFactory.getModuleName(), "", ""); node.isIsFile(), node.getParent().getFile(), "", ArchiveFileExtractorModuleFactory.getModuleName(), "", "");
node.setFile(df); node.setFile(df);
} catch (TskCoreException ex) { } catch (TskCoreException ex) {
logger.log(Level.SEVERE, "Error adding a derived file to db:" + fileName, ex); //NON-NLS logger.log(Level.SEVERE, "Error adding a derived file to db:" + fileName, ex); //NON-NLS
throw new TskCoreException( throw new TskCoreException(
@ -786,31 +794,35 @@ public final class SevenZipIngestModule implements FileIngestModule {
} }
//recurse //recurse
for (Data child : node.children) { for (UnpackedNode child : node.children) {
createDerivedFilesRec(child); addDerivedFilesToCaseRec(child, fileManager);
} }
} }
private class Data {
/**
* A node in the unpacked tree that represents a file or folder.
*/
private class UnpackedNode {
private String fileName; private String fileName;
private AbstractFile file; private AbstractFile file;
private List<Data> children = new ArrayList<>(); private List<UnpackedNode> children = new ArrayList<>();
private String localRelPath; private String localRelPath = "";
private long size; private long size;
private long ctime, crtime, atime, mtime; private long ctime, crtime, atime, mtime;
private boolean isFile; private boolean isFile;
private Data parent; private UnpackedNode parent;
//root constructor //root constructor
Data() { UnpackedNode() {
} }
//child node constructor //child node constructor
Data(String fileName, Data parent) { UnpackedNode(String fileName, UnpackedNode parent) {
this.fileName = fileName; this.fileName = fileName;
this.parent = parent; this.parent = parent;
this.localRelPath = parent.localRelPath + File.separator + fileName; //this.localRelPath = parent.localRelPath + File.separator + fileName;
//new child derived file will be set by unpack() method //new child derived file will be set by unpack() method
parent.children.add(this); parent.children.add(this);
@ -836,19 +848,20 @@ public final class SevenZipIngestModule implements FileIngestModule {
this.fileName = fileName; this.fileName = fileName;
} }
Data getParent() { UnpackedNode getParent() {
return parent; return parent;
} }
void addDerivedInfo(long size, void addDerivedInfo(long size,
boolean isFile, boolean isFile,
long ctime, long crtime, long atime, long mtime) { long ctime, long crtime, long atime, long mtime, String relLocalPath) {
this.size = size; this.size = size;
this.isFile = isFile; this.isFile = isFile;
this.ctime = ctime; this.ctime = ctime;
this.crtime = crtime; this.crtime = crtime;
this.atime = atime; this.atime = atime;
this.mtime = mtime; this.mtime = mtime;
this.localRelPath = relLocalPath;
} }
void setFile(AbstractFile file) { void setFile(AbstractFile file) {
@ -861,9 +874,9 @@ public final class SevenZipIngestModule implements FileIngestModule {
* @param childFileName * @param childFileName
* @return * @return
*/ */
Data getChild(String childFileName) { UnpackedNode getChild(String childFileName) {
Data ret = null; UnpackedNode ret = null;
for (Data child : children) { for (UnpackedNode child : children) {
if (child.fileName.equals(childFileName)) { if (child.fileName.equals(childFileName)) {
ret = child; ret = child;
break; break;