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Refactored and added comments. No logic changes

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This commit is contained in:
Brian Carrier 2020-02-04 14:51:36 -05:00
parent e6e83682fe
commit 2ad2f1fb76
3 changed files with 287 additions and 267 deletions
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18
RecentActivity/src/org/sleuthkit/autopsy/recentactivity/Bundle.properties-MERGED
View File

@ -1,15 +1,22 @@
cannotBuildXmlParser=Unable to build XML parser: cannotBuildXmlParser=Unable to build XML parser:
cannotLoadSEUQA=Unable to load Search Engine URL Query Analyzer settings file, SEUQAMappings.xml: cannotLoadSEUQA=Unable to load Search Engine URL Query Analyzer settings file, SEUQAMappings.xml:
cannotParseXml=Unable to parse XML file: cannotParseXml=Unable to parse XML file:
ChromeCacheExtract_adding_extracted_files_msg=Adding %d extracted files for analysis. Chrome.getBookmark.errMsg.errAnalyzeFile={0}: Error while trying to analyze file: {1}
ChromeCacheExtract_adding_artifacts_msg=Chrome Cache: Adding %d artifacts for analysis.
ChromeCacheExtract_adding_extracted_files_msg=Chrome Cache: Adding %d extracted files for analysis.
ChromeCacheExtract_loading_files_msg=Chrome Cache: Loading files from %s.
ChromeCacheExtractor.moduleName=ChromeCacheExtractor ChromeCacheExtractor.moduleName=ChromeCacheExtractor
# {0} - module name
# {1} - row number
# {2} - table length
# {3} - cache path
ChromeCacheExtractor.progressMsg={0}: Extracting cache entry {1} of {2} entries from {3} ChromeCacheExtractor.progressMsg={0}: Extracting cache entry {1} of {2} entries from {3}
DataSourceUsage_AndroidMedia=Android Media Card DataSourceUsage_AndroidMedia=Android Media Card
DataSourceUsage_DJU_Drone_DAT=DJI Internal SD Card DataSourceUsage_DJU_Drone_DAT=DJI Internal SD Card
DataSourceUsage_FlashDrive=Flash Drive DataSourceUsage_FlashDrive=Flash Drive
# {0} - OS name
DataSourceUsageAnalyzer.customVolume.label=OS Drive ({0}) DataSourceUsageAnalyzer.customVolume.label=OS Drive ({0})
DataSourceUsageAnalyzer.parentModuleName=Recent Activity DataSourceUsageAnalyzer.parentModuleName=Recent Activity
Extract.dbConn.errMsg.failedToQueryDb={0}: Failed to query database.
Extract.indexError.message=Failed to index artifact for keyword search. Extract.indexError.message=Failed to index artifact for keyword search.
Extract.noOpenCase.errMsg=No open case available. Extract.noOpenCase.errMsg=No open case available.
ExtractEdge_getHistory_containerFileNotFound=Error while trying to analyze Edge history ExtractEdge_getHistory_containerFileNotFound=Error while trying to analyze Edge history
@ -18,6 +25,11 @@ ExtractEdge_process_errMsg_errGettingWebCacheFiles=Error trying to retrieving Ed
ExtractEdge_process_errMsg_spartanFail=Failure processing Microsoft Edge spartan.edb file ExtractEdge_process_errMsg_spartanFail=Failure processing Microsoft Edge spartan.edb file
ExtractEdge_process_errMsg_unableFindESEViewer=Unable to find ESEDatabaseViewer ExtractEdge_process_errMsg_unableFindESEViewer=Unable to find ESEDatabaseViewer
ExtractEdge_process_errMsg_webcacheFail=Failure processing Microsoft Edge WebCacheV01.dat file ExtractEdge_process_errMsg_webcacheFail=Failure processing Microsoft Edge WebCacheV01.dat file
ExtractIE.getBookmark.ere.noSpace=RecentActivity
ExtractIE.getBookmark.errMsg.errPostingBookmarks=Error posting Internet Explorer Bookmark artifacts.
ExtractIE.getCookie.errMsg.errPostingCookies=Error posting Internet Explorer Cookie artifacts.
ExtractIE.getHistory.errMsg.errPostingHistory=Error posting Internet Explorer History artifacts.
Extractor.errPostingArtifacts=Error posting {0} artifacts to the blackboard.
ExtractOs.androidOs.label=Android ExtractOs.androidOs.label=Android
ExtractOs.androidVolume.label=OS Drive (Android) ExtractOs.androidVolume.label=OS Drive (Android)
ExtractOs.debianLinuxOs.label=Linux (Debian) ExtractOs.debianLinuxOs.label=Linux (Debian)
@ -84,7 +96,7 @@ Chrome.getLogin.errMsg.errAnalyzingFiles={0}: Error while trying to analyze file
Chrome.getAutofill.errMsg.errGettingFiles=Error when trying to get Chrome Web Data files. Chrome.getAutofill.errMsg.errGettingFiles=Error when trying to get Chrome Web Data files.
Chrome.getAutofill.errMsg.errAnalyzingFiles={0}: Error while trying to analyze file:{1} Chrome.getAutofill.errMsg.errAnalyzingFiles={0}: Error while trying to analyze file:{1}
ExtractIE.moduleName.text=Internet Explorer ExtractIE.moduleName.text=Internet Explorer
ExtractIE.getBookmark.errMsg.errGettingBookmarks={0}: Error getting Internet Explorer Bookmarks. ExtractIE.getBookmark.errMsg.errGettingBookmarks=Error getting Internet Explorer Bookmarks.
ExtractIE.parentModuleName.noSpace=RecentActivity ExtractIE.parentModuleName.noSpace=RecentActivity
ExtractIE.parentModuleName=Recent Activity ExtractIE.parentModuleName=Recent Activity
ExtractIE.getURLFromIEBmkFile.errMsg={0}: Error parsing IE bookmark File {1} ExtractIE.getURLFromIEBmkFile.errMsg={0}: Error parsing IE bookmark File {1}

2
RecentActivity/src/org/sleuthkit/autopsy/recentactivity/Chrome.java
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@ -142,7 +142,7 @@ class Chrome extends Extract {
progressBar.progress(Bundle.Progress_Message_Chrome_Cache()); progressBar.progress(Bundle.Progress_Message_Chrome_Cache());
ChromeCacheExtractor chromeCacheExtractor = new ChromeCacheExtractor(dataSource, context, progressBar); ChromeCacheExtractor chromeCacheExtractor = new ChromeCacheExtractor(dataSource, context, progressBar);
chromeCacheExtractor.getCaches(); chromeCacheExtractor.processCaches();
} }
/** /**

484
RecentActivity/src/org/sleuthkit/autopsy/recentactivity/ChromeCacheExtractor.java
View File

@ -73,6 +73,18 @@ import org.sleuthkit.datamodel.TskException;
* *
* We extract cache entries, create derived files if needed, * We extract cache entries, create derived files if needed,
* and record the URL. * and record the URL.
*
* CACHE BASICS (https://www.chromium.org/developers/design-documents/network-stack/disk-cache)
* - A cached item is broken up into segments (header, payload, etc.). The segments are not stored together.
* - Each user has a cache folder in AppData\Local\Google\Chrome\User Data\Default\Cache
* - Each folder has three kinds of files
* -- index: This is the main file. It has one entry for every cached item. You can start from here and work you way to the various data_x and f_XXX files that contain segments.
* -- data_X: These files are containers for small segments and other supporting data (such as the cache entry)
* -- f_XXXX: If the cached data cannot fit into a slot in data_X, it will be saved to its
* own f_XXXX file. These could be compressed if the data being sent was compressed.
* These are referred to as "External Files" in the below code.
* - A CacheAddress embeds information about which file something is stored in. This address is used in several structures to make it easy to abstract out where data is stored.
* - General Flow: index file -> process Cache Entry in data_X file -> process segment in data_X or f_XXX.
*/ */
final class ChromeCacheExtractor { final class ChromeCacheExtractor {
@ -100,22 +112,22 @@ final class ChromeCacheExtractor {
private FileManager fileManager; private FileManager fileManager;
// A file table to cache copies of index and data_n files. // A file table to cache copies of index and data_n files.
private final Map<String, CacheFileCopy> fileCopyCache = new HashMap<>(); private final Map<String, FileWrapper> fileCopyCache = new HashMap<>();
// A file table to cache the f_* files. // A file table to cache the f_* files.
private final Map<String, AbstractFile> externalFilesTable = new HashMap<>(); private final Map<String, AbstractFile> externalFilesTable = new HashMap<>();
/** /**
* Encapsulates abstract file for a cache file as well as a temp file copy * Allows methods to use data in an AbstractFile in a variety of
* that can be accessed as a random access file. * ways. As a ByteBuffer, AbstractFile, etc. A local copy of the file
* backs the ByteBuffer.
*/ */
final class CacheFileCopy { final class FileWrapper {
private final AbstractFile abstractFile; private final AbstractFile abstractFile;
private final RandomAccessFile fileCopy; private final RandomAccessFile fileCopy;
private final ByteBuffer byteBuffer; private final ByteBuffer byteBuffer;
CacheFileCopy (AbstractFile abstractFile, RandomAccessFile fileCopy, ByteBuffer buffer ) { FileWrapper (AbstractFile abstractFile, RandomAccessFile fileCopy, ByteBuffer buffer ) {
this.abstractFile = abstractFile; this.abstractFile = abstractFile;
this.fileCopy = fileCopy; this.fileCopy = fileCopy;
this.byteBuffer = buffer; this.byteBuffer = buffer;
@ -174,13 +186,13 @@ final class ChromeCacheExtractor {
} }
/** /**
* Initializes the module to extract cache from a specific folder. * Resets the internal caches and temp folders in between processing each user cache folder
* *
* @param cachePath - path where cache files are found * @param cachePath - path (in data source) of the cache being processed
* *
* @throws org.sleuthkit.autopsy.ingest.IngestModule.IngestModuleException * @throws org.sleuthkit.autopsy.ingest.IngestModule.IngestModuleException
*/ */
private void resetForNewFolder(String cachePath) throws IngestModuleException { private void resetForNewCacheFolder(String cachePath) throws IngestModuleException {
fileCopyCache.clear(); fileCopyCache.clear();
externalFilesTable.clear(); externalFilesTable.clear();
@ -206,7 +218,7 @@ final class ChromeCacheExtractor {
*/ */
private void cleanup () { private void cleanup () {
for (Entry<String, CacheFileCopy> entry : this.fileCopyCache.entrySet()) { for (Entry<String, FileWrapper> entry : this.fileCopyCache.entrySet()) {
Path tempFilePath = Paths.get(RAImageIngestModule.getRATempPath(currentCase, moduleName), entry.getKey() ); Path tempFilePath = Paths.get(RAImageIngestModule.getRATempPath(currentCase, moduleName), entry.getKey() );
try { try {
entry.getValue().getFileCopy().getChannel().close(); entry.getValue().getFileCopy().getChannel().close();
@ -246,7 +258,7 @@ final class ChromeCacheExtractor {
* A data source may have multiple Chrome user profiles and caches. * A data source may have multiple Chrome user profiles and caches.
* *
*/ */
void getCaches() { void processCaches() {
try { try {
moduleInit(); moduleInit();
@ -257,18 +269,18 @@ final class ChromeCacheExtractor {
} }
// Find and process the cache folders. There could be one per user // Find and process the cache folders. There could be one per user
List<AbstractFile> indexFiles;
try { try {
indexFiles = findCacheIndexFiles(); // Identify each cache folder by searching for the index files in each
List<AbstractFile> indexFiles = findIndexFiles();
// Process each of the caches // Process each of the cache folders
for (AbstractFile indexFile: indexFiles) { for (AbstractFile indexFile: indexFiles) {
if (context.dataSourceIngestIsCancelled()) { if (context.dataSourceIngestIsCancelled()) {
return; return;
} }
processCacheIndexFile(indexFile); processCacheFolder(indexFile);
} }
} catch (TskCoreException ex) { } catch (TskCoreException ex) {
@ -278,62 +290,77 @@ final class ChromeCacheExtractor {
} }
@Messages({ @Messages({
"ChromeCacheExtract_adding_extracted_files_msg=Adding %d extracted files for analysis." "ChromeCacheExtract_adding_extracted_files_msg=Chrome Cache: Adding %d extracted files for analysis.",
"ChromeCacheExtract_adding_artifacts_msg=Chrome Cache: Adding %d artifacts for analysis.",
"ChromeCacheExtract_loading_files_msg=Chrome Cache: Loading files from %s."
}) })
/** /**
* Processes a user's cache and creates corresponding artifacts and derived files. * Processes a user's cache and creates corresponding artifacts and derived files.
* Will ultimately process the f_XXXX and data_X files in the folder.
* *
* @param cacheIndexFile Cache index file for a given user * @param indexFile Index file that is located in a user's cache folder
*/ */
private void processCacheIndexFile(AbstractFile indexAbstractFile) { private void processCacheFolder(AbstractFile indexFile) {
String cachePath = indexAbstractFile.getParentPath(); String cacheFolderName = indexFile.getParentPath();
Optional<CacheFileCopy> indexFileCopy; Optional<FileWrapper> indexFileWrapper;
/*
* The first part of this method is all about finding the needed files in the cache
* folder and making internal copies/caches of them so that we can later process them
* and effeciently look them up.
*/
try { try {
resetForNewFolder(cachePath); progressBar.progress(String.format(Bundle.ChromeCacheExtract_loading_files_msg(), cacheFolderName));
resetForNewCacheFolder(cacheFolderName);
// @@@ This is little ineffecient because we later in this call search for the AbstractFile that we currently have // @@@ This is little ineffecient because we later in this call search for the AbstractFile that we currently have
indexFileCopy = this.getCacheFileCopy(indexAbstractFile.getName(), cachePath); // Load the index file into the caches
if (!indexFileCopy.isPresent()) { indexFileWrapper = findDataOrIndexFile(indexFile.getName(), cacheFolderName);
String msg = String.format("Failed to find copy cache index file %s", indexAbstractFile.getUniquePath()); if (!indexFileWrapper.isPresent()) {
String msg = String.format("Failed to find copy cache index file %s", indexFile.getUniquePath());
logger.log(Level.WARNING, msg); logger.log(Level.WARNING, msg);
return; return;
} }
// load the data files. We do this now to load them into the cache // load the data files into the internal cache. We do this because we often
// jump in between the various data_X files resolving segments
for (int i = 0; i < 4; i ++) { for (int i = 0; i < 4; i ++) {
Optional<CacheFileCopy> dataFile = findAndCopyCacheFile(String.format("data_%1d",i), cachePath ); Optional<FileWrapper> dataFile = findDataOrIndexFile(String.format("data_%1d",i), cacheFolderName );
if (!dataFile.isPresent()) { if (!dataFile.isPresent()) {
return; return;
} }
} }
// find all f_* files in a single query and load them into the cache // find all f_* files in a single query and load them into the cache
findExternalFiles(cachePath); // we do this here so that it is a single query instead of hundreds of individual ones
findExternalFiles(cacheFolderName);
} catch (TskCoreException | IngestModuleException ex) { } catch (TskCoreException | IngestModuleException ex) {
String msg = "Failed to find cache files in path " + cachePath; //NON-NLS String msg = "Failed to find cache files in path " + cacheFolderName; //NON-NLS
logger.log(Level.WARNING, msg, ex); logger.log(Level.WARNING, msg, ex);
return; return;
} }
/*
// parse the index file * Now the analysis begins. We parse the index file and that drives parsing entries
logger.log(Level.INFO, "{0}- Now reading Cache index file from path {1}", new Object[]{moduleName, cachePath }); //NON-NLS * from data_X or f_XXXX files.
*/
logger.log(Level.INFO, "{0}- Now reading Cache index file from path {1}", new Object[]{moduleName, cacheFolderName }); //NON-NLS
List<AbstractFile> derivedFiles = new ArrayList<>(); List<AbstractFile> derivedFiles = new ArrayList<>();
Collection<BlackboardArtifact> sourceArtifacts = new ArrayList<>(); Collection<BlackboardArtifact> artifactsAdded = new ArrayList<>();
Collection<BlackboardArtifact> webCacheArtifacts = new ArrayList<>();
ByteBuffer indexFileROBuffer = indexFileCopy.get().getByteBuffer(); ByteBuffer indexFileROBuffer = indexFileWrapper.get().getByteBuffer();
IndexFileHeader indexHdr = new IndexFileHeader(indexFileROBuffer); IndexFileHeader indexHdr = new IndexFileHeader(indexFileROBuffer);
// seek past the header // seek past the header
indexFileROBuffer.position(INDEXFILE_HDR_SIZE); indexFileROBuffer.position(INDEXFILE_HDR_SIZE);
// Process each address in the table /* Cycle through index and get the CacheAddress for each CacheEntry. Process each entry
* to extract data, add artifacts, etc. from the f_XXXX and data_x files */
for (int i = 0; i < indexHdr.getTableLen(); i++) { for (int i = 0; i < indexHdr.getTableLen(); i++) {
if (context.dataSourceIngestIsCancelled()) { if (context.dataSourceIngestIsCancelled()) {
@ -341,13 +368,13 @@ final class ChromeCacheExtractor {
return; return;
} }
CacheAddress addr = new CacheAddress(indexFileROBuffer.getInt() & UINT32_MASK, cachePath); CacheAddress addr = new CacheAddress(indexFileROBuffer.getInt() & UINT32_MASK, cacheFolderName);
if (addr.isInitialized()) { if (addr.isInitialized()) {
progressBar.progress(NbBundle.getMessage(this.getClass(), progressBar.progress(NbBundle.getMessage(this.getClass(),
"ChromeCacheExtractor.progressMsg", "ChromeCacheExtractor.progressMsg",
moduleName, i, indexHdr.getTableLen(), cachePath) ); moduleName, i, indexHdr.getTableLen(), cacheFolderName) );
try { try {
List<DerivedFile> addedFiles = this.processCacheEntry(addr, sourceArtifacts, webCacheArtifacts); List<DerivedFile> addedFiles = processCacheEntry(addr, artifactsAdded);
derivedFiles.addAll(addedFiles); derivedFiles.addAll(addedFiles);
} }
catch (TskCoreException | IngestModuleException ex) { catch (TskCoreException | IngestModuleException ex) {
@ -361,19 +388,19 @@ final class ChromeCacheExtractor {
return; return;
} }
progressBar.progress(String.format(Bundle.ChromeCacheExtract_adding_extracted_files_msg(), derivedFiles.size()));
// notify listeners of new files and schedule for analysis
progressBar.progress(String.format(Bundle.ChromeCacheExtract_adding_extracted_files_msg(), derivedFiles.size()));
derivedFiles.forEach((derived) -> { derivedFiles.forEach((derived) -> {
services.fireModuleContentEvent(new ModuleContentEvent(derived)); services.fireModuleContentEvent(new ModuleContentEvent(derived));
}); });
context.addFilesToJob(derivedFiles); context.addFilesToJob(derivedFiles);
// notify listeners about new artifacts
progressBar.progress(String.format(Bundle.ChromeCacheExtract_adding_artifacts_msg(), artifactsAdded.size()));
Blackboard blackboard = currentCase.getSleuthkitCase().getBlackboard(); Blackboard blackboard = currentCase.getSleuthkitCase().getBlackboard();
try { try {
blackboard.postArtifacts(sourceArtifacts, moduleName); blackboard.postArtifacts(artifactsAdded, moduleName);
blackboard.postArtifacts(webCacheArtifacts, moduleName);
} catch (Blackboard.BlackboardException ex) { } catch (Blackboard.BlackboardException ex) {
logger.log(Level.WARNING, String.format("Failed to post cacheIndex artifacts "), ex); //NON-NLS logger.log(Level.WARNING, String.format("Failed to post cacheIndex artifacts "), ex); //NON-NLS
} }
@ -382,49 +409,47 @@ final class ChromeCacheExtractor {
} }
/** /**
* Gets the cache entry at the specified address. * Processes the cache entry that is stored at the given address. A CacheEntry is
* located in a data_X file and stores information about where the various segments
* for a given cached entry are located.
* *
* Extracts the files if needed and adds as derived files, creates artifacts * Extracts the files if needed and adds as derived files, creates artifacts
* *
* @param cacheEntryAddress cache entry address * @param cacheAddress Address where CacheEntry is located (from index file)
* @param associatedObjectArtifacts any associated object artifacts created are added to this collection * @param artifactsAdded any artifact that was added
* @param webCacheArtifacts any web cache artifacts created are added to this collection
* *
* @return Optional derived file, is a derived file is added for the given entry * @return Optional derived file, is a derived file is added for the given entry
*/ */
private List<DerivedFile> processCacheEntry(CacheAddress cacheEntryAddress, Collection<BlackboardArtifact> associatedObjectArtifacts, Collection<BlackboardArtifact> webCacheArtifacts ) throws TskCoreException, IngestModuleException { private List<DerivedFile> processCacheEntry(CacheAddress cacheAddress, Collection<BlackboardArtifact> artifactsAdded ) throws TskCoreException, IngestModuleException {
List<DerivedFile> derivedFiles = new ArrayList<>(); List<DerivedFile> derivedFiles = new ArrayList<>();
// get the path to the corresponding data_X file // get the path to the corresponding data_X file for the cache entry
String dataFileName = cacheEntryAddress.getFilename(); String cacheEntryFileName = cacheAddress.getFilename();
String cachePath = cacheEntryAddress.getCachePath(); String cachePath = cacheAddress.getCachePath();
Optional<FileWrapper> cacheEntryFileOptional = findDataOrIndexFile(cacheEntryFileName, cachePath);
Optional<CacheFileCopy> cacheEntryFile = this.getCacheFileCopy(dataFileName, cachePath); if (!cacheEntryFileOptional.isPresent()) {
if (!cacheEntryFile.isPresent()) { String msg = String.format("Failed to find data file %s", cacheEntryFileName); //NON-NLS
String msg = String.format("Failed to get cache entry at address %s", cacheEntryAddress); //NON-NLS
throw new IngestModuleException(msg); throw new IngestModuleException(msg);
} }
// Load the entry to get its metadata, segments, etc.
CacheEntry cacheEntry = new CacheEntry(cacheAddress, cacheEntryFileOptional.get() );
List<CacheDataSegment> dataSegments = cacheEntry.getDataSegments();
// Get the cache entry and its data segments
CacheEntry cacheEntry = new CacheEntry(cacheEntryAddress, cacheEntryFile.get() );
List<CacheData> dataEntries = cacheEntry.getData();
// Only process the first payload data segment in each entry // Only process the first payload data segment in each entry
// first data segement has the HTTP headers, 2nd is the payload // first data segement has the HTTP headers, 2nd is the payload
if (dataEntries.size() < 2) { if (dataSegments.size() < 2) {
return derivedFiles; return derivedFiles;
} }
CacheData dataSegment = dataEntries.get(1); CacheDataSegment dataSegment = dataSegments.get(1);
// Name where segment is located (could be diffrent from where entry was located)
// name of the file that was downloaded and cached (or data_X if it was saved into there) String segmentFileName = dataSegment.getCacheAddress().getFilename();
String cachedFileName = dataSegment.getAddress().getFilename(); Optional<AbstractFile> segmentFileAbstractFile = findAbstractFile(segmentFileName, cachePath);
Optional<AbstractFile> cachedFileAbstractFile = this.findCacheFile(cachedFileName, cachePath); if (!segmentFileAbstractFile.isPresent()) {
if (!cachedFileAbstractFile.isPresent()) { logger.log(Level.WARNING, "Error finding segment file: " + cachePath + "/" + segmentFileName); //NON-NLS
logger.log(Level.WARNING, "Error finding file: " + cachePath + "/" + cachedFileName); //NON-NLS
return derivedFiles; return derivedFiles;
} }
@ -433,112 +458,90 @@ final class ChromeCacheExtractor {
isBrotliCompressed = true; isBrotliCompressed = true;
} }
// setup some attributes for later use
BlackboardAttribute urlAttr = new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_URL,
moduleName,
((cacheEntry.getKey() != null) ? cacheEntry.getKey() : ""));
BlackboardAttribute createTimeAttr = new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_DATETIME_CREATED,
moduleName,
cacheEntry.getCreationTime());
BlackboardAttribute httpHeaderAttr = new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_HEADERS,
moduleName,
cacheEntry.getHTTPHeaders());
Collection<BlackboardAttribute> webCacheAttributes = new ArrayList<>(); // Make artifacts around the cached item and extract data from data_X file
webCacheAttributes.add(urlAttr);
webCacheAttributes.add(createTimeAttr);
webCacheAttributes.add(httpHeaderAttr);
// add artifacts to the f_XXX file
if (dataSegment.isInExternalFile() ) {
try { try {
AbstractFile cachedItemFile; //
BlackboardArtifact webCacheArtifact = cacheEntryFile.get().getAbstractFile().newArtifact(ARTIFACT_TYPE.TSK_WEB_CACHE); /* If the cached data is in a f_XXXX file, we only need to make artifacts. */
if (webCacheArtifact != null) { if (dataSegment.isInExternalFile() ) {
webCacheArtifact.addAttributes(webCacheAttributes); cachedItemFile = segmentFileAbstractFile.get();
// Add path of f_* file as attribute
webCacheArtifact.addAttribute(new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_PATH,
moduleName,
cachedFileAbstractFile.get().getUniquePath()));
webCacheArtifact.addAttribute(new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_PATH_ID,
moduleName, cachedFileAbstractFile.get().getId()));
webCacheArtifacts.add(webCacheArtifact);
BlackboardArtifact associatedObjectArtifact = cachedFileAbstractFile.get().newArtifact(ARTIFACT_TYPE.TSK_ASSOCIATED_OBJECT);
if (associatedObjectArtifact != null) {
associatedObjectArtifact.addAttribute(
new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_ASSOCIATED_ARTIFACT,
moduleName, webCacheArtifact.getArtifactID()));
associatedObjectArtifacts.add(associatedObjectArtifact);
} }
} /* If the data is in a data_X file, we need to extract it out and then make the similar artifacts */
if (isBrotliCompressed) {
cachedFileAbstractFile.get().setMIMEType(BROTLI_MIMETYPE);
cachedFileAbstractFile.get().save();
}
} catch (TskException ex) {
logger.log(Level.SEVERE, "Error while trying to add an artifact", ex); //NON-NLS
}
}
// extract the embedded data to a derived file and create artifacts
else { else {
// Data segments in "data_x" files are saved in individual files and added as derived files // Data segments in "data_x" files are saved in individual files and added as derived files
String filename = dataSegment.save(); String filename = dataSegment.save();
String relPathname = getRelOutputFolderName() + dataSegment.getAddress().getCachePath() + filename; String relPathname = getRelOutputFolderName() + dataSegment.getCacheAddress().getCachePath() + filename;
try {
// @@@ We should batch these up and do them in one big insert / transaction
DerivedFile derivedFile = fileManager.addDerivedFile(filename, relPathname, DerivedFile derivedFile = fileManager.addDerivedFile(filename, relPathname,
dataSegment.getDataLength(), dataSegment.getDataLength(),
cacheEntry.getCreationTime(), cacheEntry.getCreationTime(), cacheEntry.getCreationTime(), cacheEntry.getCreationTime(), // TBD cacheEntry.getCreationTime(), cacheEntry.getCreationTime(), cacheEntry.getCreationTime(), cacheEntry.getCreationTime(), // TBD
true, true,
cachedFileAbstractFile.get(), segmentFileAbstractFile.get(),
"", "",
moduleName, moduleName,
VERSION_NUMBER, VERSION_NUMBER,
"", "",
TskData.EncodingType.NONE); TskData.EncodingType.NONE);
derivedFiles.add(derivedFile);
cachedItemFile = derivedFile;
}
BlackboardArtifact webCacheArtifact = cacheEntryFile.get().getAbstractFile().newArtifact(ARTIFACT_TYPE.TSK_WEB_CACHE); addArtifacts(cacheEntry, cacheEntryFileOptional.get().getAbstractFile(), cachedItemFile, artifactsAdded);
// Tika doesn't detect these types. So, make sure they have the correct MIME type */
if (isBrotliCompressed) {
cachedItemFile.setMIMEType(BROTLI_MIMETYPE);
cachedItemFile.save();
}
} catch (TskException ex) {
logger.log(Level.SEVERE, "Error while trying to add an artifact", ex); //NON-NLS
}
return derivedFiles;
}
/**
* Add artifacts for a given cached item
*
* @param cacheEntry Entry item came from
* @param cacheEntryFile File that stored the cache entry
* @param cachedItemFile File that stores the cached data (Either a derived file or f_XXXX file)
* @param artifactsAdded List of artifacts that were added by this call
* @throws TskCoreException
*/
private void addArtifacts(CacheEntry cacheEntry, AbstractFile cacheEntryFile, AbstractFile cachedItemFile, Collection<BlackboardArtifact> artifactsAdded) throws TskCoreException {
// Create a TSK_WEB_CACHE entry with the parent as data_X file that had the cache entry
BlackboardArtifact webCacheArtifact = cacheEntryFile.newArtifact(ARTIFACT_TYPE.TSK_WEB_CACHE);
if (webCacheArtifact != null) { if (webCacheArtifact != null) {
webCacheArtifact.addAttributes(webCacheAttributes); Collection<BlackboardAttribute> webAttr = new ArrayList<>();
webAttr.add(new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_URL,
// Add path of derived file as attribute
webCacheArtifact.addAttribute(new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_PATH,
moduleName, moduleName,
derivedFile.getUniquePath())); ((cacheEntry.getKey() != null) ? cacheEntry.getKey() : "")));
webAttr.add(new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_DATETIME_CREATED,
moduleName, cacheEntry.getCreationTime()));
webAttr.add(new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_HEADERS,
moduleName, cacheEntry.getHTTPHeaders()));
webAttr.add(new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_PATH,
moduleName, cachedItemFile.getUniquePath()));
webAttr.add(new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_PATH_ID,
moduleName, cachedItemFile.getId()));
webCacheArtifact.addAttributes(webAttr);
artifactsAdded.add(webCacheArtifact);
webCacheArtifact.addAttribute(new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_PATH_ID, // Create a TSK_ASSOCIATED_OBJECT on the f_XXX or derived file file back to the CACHE entry
moduleName, derivedFile.getId())); BlackboardArtifact associatedObjectArtifact = cachedItemFile.newArtifact(ARTIFACT_TYPE.TSK_ASSOCIATED_OBJECT);
webCacheArtifacts.add(webCacheArtifact);
BlackboardArtifact associatedObjectArtifact = derivedFile.newArtifact(ARTIFACT_TYPE.TSK_ASSOCIATED_OBJECT);
if (associatedObjectArtifact != null) { if (associatedObjectArtifact != null) {
associatedObjectArtifact.addAttribute( associatedObjectArtifact.addAttribute(
new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_ASSOCIATED_ARTIFACT, new BlackboardAttribute(BlackboardAttribute.ATTRIBUTE_TYPE.TSK_ASSOCIATED_ARTIFACT,
moduleName, webCacheArtifact.getArtifactID())); moduleName, webCacheArtifact.getArtifactID()));
associatedObjectArtifacts.add(associatedObjectArtifact); artifactsAdded.add(associatedObjectArtifact);
} }
} }
if (isBrotliCompressed) {
derivedFile.setMIMEType(BROTLI_MIMETYPE);
derivedFile.save();
}
derivedFiles.add(derivedFile);
} catch (TskException ex) {
logger.log(Level.SEVERE, "Error while trying to add an artifact", ex); //NON-NLS
}
}
return derivedFiles;
} }
/** /**
@ -557,26 +560,27 @@ final class ChromeCacheExtractor {
} }
} }
/** /**
* Finds abstract file for cache file with a specified name. * Finds a file with a given name in a given cache folder
* First checks in the file tables. * First checks in the file tables.
* *
* @param cacheFileName * @param cacheFileName
* @return Optional abstract file * @return Optional abstract file
* @throws TskCoreException * @throws TskCoreException
*/ */
private Optional<AbstractFile> findCacheFile(String cacheFileName, String cachePath) throws TskCoreException { private Optional<AbstractFile> findAbstractFile(String cacheFileName, String cacheFolderName) throws TskCoreException {
// see if it is cached // see if it is cached
String fileTableKey = cachePath + cacheFileName; String fileTableKey = cacheFolderName + cacheFileName;
if (cacheFileName.startsWith("f_") && externalFilesTable.containsKey(fileTableKey)) { if (cacheFileName.startsWith("f_") && externalFilesTable.containsKey(fileTableKey)) {
return Optional.of(externalFilesTable.get(fileTableKey)); return Optional.of(externalFilesTable.get(fileTableKey));
} }
if (fileCopyCache.containsKey(fileTableKey)) { if (fileCopyCache.containsKey(fileTableKey)) {
return Optional.of(fileCopyCache.get(fileTableKey).getAbstractFile()); return Optional.of(fileCopyCache.get(fileTableKey).getAbstractFile());
} }
List<AbstractFile> cacheFiles = fileManager.findFiles(dataSource, cacheFileName, cachePath); //NON-NLS List<AbstractFile> cacheFiles = fileManager.findFiles(dataSource, cacheFileName, cacheFolderName); //NON-NLS
if (!cacheFiles.isEmpty()) { if (!cacheFiles.isEmpty()) {
for (AbstractFile abstractFile: cacheFiles ) { for (AbstractFile abstractFile: cacheFiles ) {
if (abstractFile.getUniquePath().trim().endsWith(DEFAULT_CACHE_PATH_STR)) { if (abstractFile.getUniquePath().trim().endsWith(DEFAULT_CACHE_PATH_STR)) {
@ -590,57 +594,51 @@ final class ChromeCacheExtractor {
} }
/** /**
* Finds abstract file(s) for a cache file with the specified name. * Finds the "index" file that exists in each user's cache. This is used to
* enumerate all of the caches on the system.
* *
* @return list of abstract files matching the specified file name * @return list of index files in Chrome cache folders
* @throws TskCoreException * @throws TskCoreException
*/ */
private List<AbstractFile> findCacheIndexFiles() throws TskCoreException { private List<AbstractFile> findIndexFiles() throws TskCoreException {
return fileManager.findFiles(dataSource, "index", DEFAULT_CACHE_PATH_STR); //NON-NLS return fileManager.findFiles(dataSource, "index", DEFAULT_CACHE_PATH_STR); //NON-NLS
} }
/** /**
* Returns CacheFileCopy for the specified file from the file table. * Finds the specified data or index cache file under the specified path.
* Find the file and creates a copy if it isn't already in the table. * The FileWrapper is easier to parse than a raw AbstractFile.
* Will save the file to an internal cache. For the f_XXXX files, use
* findAbstractFile().
* *
* @param cacheFileName Name of file * @param cacheFileName Name file file
* @param cachePath Parent path of file * @param cacheFolderName Name of user's cache folder
* @return CacheFileCopy * @return Cache file copy
* @throws TskCoreException * @throws TskCoreException
*/ */
private Optional<CacheFileCopy> getCacheFileCopy(String cacheFileName, String cachePath) throws TskCoreException, IngestModuleException { private Optional<FileWrapper> findDataOrIndexFile(String cacheFileName, String cacheFolderName) throws TskCoreException, IngestModuleException {
// Check if the file is already in the cache // Check if the file is already in the cache
String fileTableKey = cachePath + cacheFileName; String fileTableKey = cacheFolderName + cacheFileName;
if (fileCopyCache.containsKey(fileTableKey)) { if (fileCopyCache.containsKey(fileTableKey)) {
return Optional.of(fileCopyCache.get(fileTableKey)); return Optional.of(fileCopyCache.get(fileTableKey));
} }
return findAndCopyCacheFile(cacheFileName, cachePath); // Use Autopsy to get the AbstractFile
} Optional<AbstractFile> abstractFileOptional = findAbstractFile(cacheFileName, cacheFolderName);
if (!abstractFileOptional.isPresent()) {
/**
* Finds the specified cache file under the specified path, and makes a temporary copy.
*
* @param cacheFileName
* @return Cache file copy
* @throws TskCoreException
*/
private Optional<CacheFileCopy> findAndCopyCacheFile(String cacheFileName, String cachePath) throws TskCoreException, IngestModuleException {
Optional<AbstractFile> cacheFileOptional = findCacheFile(cacheFileName, cachePath);
if (!cacheFileOptional.isPresent()) {
return Optional.empty(); return Optional.empty();
} }
// Wrap the file so that we can get the ByteBuffer later.
// @@@ BC: I think this should nearly all go into FileWrapper and be done lazily and perhaps based on size.
// Many of the files are small enough to keep in memory for the ByteBuffer
// write the file to disk so that we can have a memory-mapped ByteBuffer // write the file to disk so that we can have a memory-mapped ByteBuffer
// @@@ NOTE: I"m not sure this is needed. These files are small enough and we could probably just load them into AbstractFile cacheFile = abstractFileOptional.get();
// a byte[] for ByteBuffer.
AbstractFile cacheFile = cacheFileOptional.get();
RandomAccessFile randomAccessFile = null; RandomAccessFile randomAccessFile = null;
String tempFilePathname = RAImageIngestModule.getRATempPath(currentCase, moduleName) + cachePath + cacheFile.getName(); //NON-NLS String tempFilePathname = RAImageIngestModule.getRATempPath(currentCase, moduleName) + cacheFolderName + cacheFile.getName(); //NON-NLS
try { try {
File newFile = new File(tempFilePathname); File newFile = new File(tempFilePathname);
ContentUtils.writeToFile(cacheFile, newFile, context::dataSourceIngestIsCancelled); ContentUtils.writeToFile(cacheFile, newFile, context::dataSourceIngestIsCancelled);
@ -651,13 +649,13 @@ final class ChromeCacheExtractor {
(int) roChannel.size()); (int) roChannel.size());
cacheFileROBuf.order(ByteOrder.nativeOrder()); cacheFileROBuf.order(ByteOrder.nativeOrder());
CacheFileCopy cacheFileCopy = new CacheFileCopy(cacheFile, randomAccessFile, cacheFileROBuf ); FileWrapper cacheFileWrapper = new FileWrapper(cacheFile, randomAccessFile, cacheFileROBuf );
if (!cacheFileName.startsWith("f_")) { if (!cacheFileName.startsWith("f_")) {
fileCopyCache.put(cachePath + cacheFileName, cacheFileCopy); fileCopyCache.put(cacheFolderName + cacheFileName, cacheFileWrapper);
} }
return Optional.of(cacheFileCopy); return Optional.of(cacheFileWrapper);
} }
catch (IOException ex) { catch (IOException ex) {
@ -699,7 +697,7 @@ final class ChromeCacheExtractor {
lastFile = indexFileROBuf.getInt(); lastFile = indexFileROBuf.getInt();
indexFileROBuf.position(indexFileROBuf.position()+4); // this_id indexFileROBuf.position(indexFileROBuf.position()+4); // this_id
indexFileROBuf.position(indexFileROBuf.position()+4); // stats cache address indexFileROBuf.position(indexFileROBuf.position()+4); // stats cache cacheAddress
tableLen = indexFileROBuf.getInt(); tableLen = indexFileROBuf.getInt();
} }
@ -745,7 +743,7 @@ final class ChromeCacheExtractor {
} }
/** /**
* Cache file type enum - as encoded the address * Cache file type enum - as encoded the cacheAddress
*/ */
enum CacheFileTypeEnum { enum CacheFileTypeEnum {
EXTERNAL, EXTERNAL,
@ -761,18 +759,21 @@ final class ChromeCacheExtractor {
/** /**
* Encapsulates Cache address. * Google defines the notion of a CacheAddress that spans the various
* * files in the cache. The 32-bit number embeds which file and offset
* CacheAddress is a unsigned 32 bit number * the address is in.
* The below defines what each bit means. A 1 means the bit is used
* for that value.
* *
* Header: * Header:
* 1000 0000 0000 0000 0000 0000 0000 0000 : initialized bit * 1000 0000 0000 0000 0000 0000 0000 0000 : initialized bit
* 0111 0000 0000 0000 0000 0000 0000 0000 : file type * 0111 0000 0000 0000 0000 0000 0000 0000 : file type
* *
* If separate file: * If external file: (i.e. f_XXXX)
* 0000 1111 1111 1111 1111 1111 1111 1111 : file# 0 - 268,435,456 (2^28) * 0000 1111 1111 1111 1111 1111 1111 1111 : file# 0 - 268,435,456 (2^28)
* *
* If block file: * If block file: (i.e. data_X)
* 0000 1100 0000 0000 0000 0000 0000 0000 : reserved bits * 0000 1100 0000 0000 0000 0000 0000 0000 : reserved bits
* 0000 0011 0000 0000 0000 0000 0000 0000 : number of contiguous blocks 1-4 * 0000 0011 0000 0000 0000 0000 0000 0000 : number of contiguous blocks 1-4
* 0000 0000 1111 1111 0000 0000 0000 0000 : file selector 0 - 255 * 0000 0000 1111 1111 0000 0000 0000 0000 : file selector 0 - 255
@ -780,7 +781,7 @@ final class ChromeCacheExtractor {
* *
*/ */
final class CacheAddress { final class CacheAddress {
// sundry constants to parse the bit fields in address // sundry constants to parse the bit fields
private static final long ADDR_INITIALIZED_MASK = 0x80000000l; private static final long ADDR_INITIALIZED_MASK = 0x80000000l;
private static final long FILE_TYPE_MASK = 0x70000000; private static final long FILE_TYPE_MASK = 0x70000000;
private static final long FILE_TYPE_OFFSET = 28; private static final long FILE_TYPE_OFFSET = 28;
@ -801,11 +802,18 @@ final class ChromeCacheExtractor {
private final String cachePath; private final String cachePath;
/**
*
* @param uint32 Encoded address
* @param cachePath Folder that index file was located in
*/
CacheAddress(long uint32, String cachePath) { CacheAddress(long uint32, String cachePath) {
uint32CacheAddr = uint32; uint32CacheAddr = uint32;
this.cachePath = cachePath; this.cachePath = cachePath;
// analyze the
int fileTypeEnc = (int)(uint32CacheAddr & FILE_TYPE_MASK) >> FILE_TYPE_OFFSET; int fileTypeEnc = (int)(uint32CacheAddr & FILE_TYPE_MASK) >> FILE_TYPE_OFFSET;
fileType = CacheFileTypeEnum.values()[fileTypeEnc]; fileType = CacheFileTypeEnum.values()[fileTypeEnc];
@ -930,33 +938,33 @@ final class ChromeCacheExtractor {
* *
* A data segment may be compressed - GZIP and BRotli are the two commonly used methods. * A data segment may be compressed - GZIP and BRotli are the two commonly used methods.
*/ */
final class CacheData { final class CacheDataSegment {
private int length; private int length;
private final CacheAddress address; private final CacheAddress cacheAddress;
private CacheDataTypeEnum type; private CacheDataTypeEnum type;
private boolean isHTTPHeaderHint; private boolean isHTTPHeaderHint;
private CacheFileCopy cacheFileCopy = null; private FileWrapper cacheFileCopy = null;
private byte[] data = null; private byte[] data = null;
private String httpResponse; private String httpResponse;
private final Map<String, String> httpHeaders = new HashMap<>(); private final Map<String, String> httpHeaders = new HashMap<>();
CacheData(CacheAddress cacheAdress, int len) { CacheDataSegment(CacheAddress cacheAddress, int len) {
this(cacheAdress, len, false); this(cacheAddress, len, false);
} }
CacheData(CacheAddress cacheAdress, int len, boolean isHTTPHeader ) { CacheDataSegment(CacheAddress cacheAddress, int len, boolean isHTTPHeader ) {
this.type = CacheDataTypeEnum.UNKNOWN; this.type = CacheDataTypeEnum.UNKNOWN;
this.length = len; this.length = len;
this.address = cacheAdress; this.cacheAddress = cacheAddress;
this.isHTTPHeaderHint = isHTTPHeader; this.isHTTPHeaderHint = isHTTPHeader;
} }
boolean isInExternalFile() { boolean isInExternalFile() {
return address.isInExternalFile(); return cacheAddress.isInExternalFile();
} }
boolean hasHTTPHeaders() { boolean hasHTTPHeaders() {
@ -1006,13 +1014,13 @@ final class ChromeCacheExtractor {
} }
// Don't extract data from external files. // Don't extract data from external files.
if (!address.isInExternalFile() ) { if (!cacheAddress.isInExternalFile() ) {
cacheFileCopy = getCacheFileCopy(address.getFilename(), address.getCachePath()).get(); cacheFileCopy = findDataOrIndexFile(cacheAddress.getFilename(), cacheAddress.getCachePath()).get();
this.data = new byte [length]; this.data = new byte [length];
ByteBuffer buf = cacheFileCopy.getByteBuffer(); ByteBuffer buf = cacheFileCopy.getByteBuffer();
int dataOffset = DATAFILE_HDR_SIZE + address.getStartBlock() * address.getBlockSize(); int dataOffset = DATAFILE_HDR_SIZE + cacheAddress.getStartBlock() * cacheAddress.getBlockSize();
buf.position(dataOffset); buf.position(dataOffset);
buf.get(data, 0, length); buf.get(data, 0, length);
@ -1095,8 +1103,8 @@ final class ChromeCacheExtractor {
return type; return type;
} }
CacheAddress getAddress() { CacheAddress getCacheAddress() {
return address; return cacheAddress;
} }
@ -1111,13 +1119,13 @@ final class ChromeCacheExtractor {
String save() throws TskCoreException, IngestModuleException { String save() throws TskCoreException, IngestModuleException {
String fileName; String fileName;
if (address.isInExternalFile()) { if (cacheAddress.isInExternalFile()) {
fileName = address.getFilename(); fileName = cacheAddress.getFilename();
} else { } else {
fileName = String.format("%s__%08x", address.getFilename(), address.getUint32CacheAddr()); fileName = String.format("%s__%08x", cacheAddress.getFilename(), cacheAddress.getUint32CacheAddr());
} }
String filePathName = getAbsOutputFolderName() + address.getCachePath() + fileName; String filePathName = getAbsOutputFolderName() + cacheAddress.getCachePath() + fileName;
save(filePathName); save(filePathName);
return fileName; return fileName;
@ -1199,7 +1207,7 @@ final class ChromeCacheExtractor {
// int32 state; // Current state. // int32 state; // Current state.
// uint64 creation_time; // uint64 creation_time;
// int32 key_len; // int32 key_len;
// CacheAddr long_key; // Optional address of a long key. // CacheAddr long_key; // Optional cacheAddress of a long key.
// int32 data_size[4]; // We can store up to 4 data streams for each // int32 data_size[4]; // We can store up to 4 data streams for each
// CacheAddr data_addr[4]; // entry. // CacheAddr data_addr[4]; // entry.
// uint32 flags; // Any combination of EntryFlags. // uint32 flags; // Any combination of EntryFlags.
@ -1217,7 +1225,7 @@ final class ChromeCacheExtractor {
private static final int MAX_KEY_LEN = 256-24*4; private static final int MAX_KEY_LEN = 256-24*4;
private final CacheAddress selfAddress; private final CacheAddress selfAddress;
private final CacheFileCopy cacheFileCopy; private final FileWrapper cacheFileCopy;
private final long hash; private final long hash;
private final CacheAddress nextAddress; private final CacheAddress nextAddress;
@ -1230,17 +1238,17 @@ final class ChromeCacheExtractor {
private final long creationTime; private final long creationTime;
private final int keyLen; private final int keyLen;
private final CacheAddress longKeyAddresses; // address of the key, if the key is external to the entry private final CacheAddress longKeyAddresses; // cacheAddress of the key, if the key is external to the entry
private final int dataSizes[]; private final int[] dataSegmentSizes;
private final CacheAddress dataAddresses[]; private final CacheAddress[] dataSegmentIndexFileEntries;
private List<CacheData> dataList; private List<CacheDataSegment> dataSegments;
private final long flags; private final long flags;
private String key; // Key may be found within the entry or may be external private String key; // Key may be found within the entry or may be external
CacheEntry(CacheAddress cacheAdress, CacheFileCopy cacheFileCopy ) { CacheEntry(CacheAddress cacheAdress, FileWrapper cacheFileCopy ) {
this.selfAddress = cacheAdress; this.selfAddress = cacheAdress;
this.cacheFileCopy = cacheFileCopy; this.cacheFileCopy = cacheFileCopy;
@ -1270,14 +1278,14 @@ final class ChromeCacheExtractor {
uint32 = fileROBuf.getInt() & UINT32_MASK; uint32 = fileROBuf.getInt() & UINT32_MASK;
longKeyAddresses = (uint32 != 0) ? new CacheAddress(uint32, selfAddress.getCachePath()) : null; longKeyAddresses = (uint32 != 0) ? new CacheAddress(uint32, selfAddress.getCachePath()) : null;
dataList = null; dataSegments = null;
dataSizes= new int[4]; dataSegmentSizes= new int[4];
for (int i = 0; i < 4; i++) { for (int i = 0; i < 4; i++) {
dataSizes[i] = fileROBuf.getInt(); dataSegmentSizes[i] = fileROBuf.getInt();
} }
dataAddresses = new CacheAddress[4]; dataSegmentIndexFileEntries = new CacheAddress[4];
for (int i = 0; i < 4; i++) { for (int i = 0; i < 4; i++) {
dataAddresses[i] = new CacheAddress(fileROBuf.getInt() & UINT32_MASK, selfAddress.getCachePath()); dataSegmentIndexFileEntries[i] = new CacheAddress(fileROBuf.getInt() & UINT32_MASK, selfAddress.getCachePath());
} }
flags = fileROBuf.getInt() & UINT32_MASK; flags = fileROBuf.getInt() & UINT32_MASK;
@ -1293,7 +1301,7 @@ final class ChromeCacheExtractor {
if (longKeyAddresses != null) { if (longKeyAddresses != null) {
// Key is stored outside of the entry // Key is stored outside of the entry
try { try {
CacheData data = new CacheData(longKeyAddresses, this.keyLen, true); CacheDataSegment data = new CacheDataSegment(longKeyAddresses, this.keyLen, true);
key = data.getDataString(); key = data.getDataString();
} catch (TskCoreException | IngestModuleException ex) { } catch (TskCoreException | IngestModuleException ex) {
logger.log(Level.WARNING, String.format("Failed to get external key from address %s", longKeyAddresses)); //NON-NLS logger.log(Level.WARNING, String.format("Failed to get external key from address %s", longKeyAddresses)); //NON-NLS
@ -1315,7 +1323,7 @@ final class ChromeCacheExtractor {
} }
} }
public CacheAddress getAddress() { public CacheAddress getCacheAddress() {
return selfAddress; return selfAddress;
} }
@ -1323,7 +1331,7 @@ final class ChromeCacheExtractor {
return hash; return hash;
} }
public CacheAddress getNextAddress() { public CacheAddress getNextCacheAddress() {
return nextAddress; return nextAddress;
} }
@ -1359,20 +1367,20 @@ final class ChromeCacheExtractor {
* @throws TskCoreException * @throws TskCoreException
* @throws org.sleuthkit.autopsy.ingest.IngestModule.IngestModuleException * @throws org.sleuthkit.autopsy.ingest.IngestModule.IngestModuleException
*/ */
public List<CacheData> getData() throws TskCoreException, IngestModuleException { public List<CacheDataSegment> getDataSegments() throws TskCoreException, IngestModuleException {
if (dataList == null) { if (dataSegments == null) {
dataList = new ArrayList<>(); dataSegments = new ArrayList<>();
for (int i = 0; i < 4; i++) { for (int i = 0; i < 4; i++) {
if (dataSizes[i] > 0) { if (dataSegmentSizes[i] > 0) {
CacheData cacheData = new CacheData(dataAddresses[i], dataSizes[i], true ); CacheDataSegment cacheData = new CacheDataSegment(dataSegmentIndexFileEntries[i], dataSegmentSizes[i], true );
cacheData.extract(); cacheData.extract();
dataList.add(cacheData); dataSegments.add(cacheData);
} }
} }
} }
return dataList; return dataSegments;
} }
/** /**
@ -1383,10 +1391,10 @@ final class ChromeCacheExtractor {
* @return true if the entry has HTTP headers * @return true if the entry has HTTP headers
*/ */
boolean hasHTTPHeaders() { boolean hasHTTPHeaders() {
if ((dataList == null) || dataList.isEmpty()) { if ((dataSegments == null) || dataSegments.isEmpty()) {
return false; return false;
} }
return dataList.get(0).hasHTTPHeaders(); return dataSegments.get(0).hasHTTPHeaders();
} }
/** /**
@ -1396,11 +1404,11 @@ final class ChromeCacheExtractor {
* @return header value, null if not found * @return header value, null if not found
*/ */
String getHTTPHeader(String key) { String getHTTPHeader(String key) {
if ((dataList == null) || dataList.isEmpty()) { if ((dataSegments == null) || dataSegments.isEmpty()) {
return null; return null;
} }
// First data segment has the HTTP headers, if any // First data segment has the HTTP headers, if any
return dataList.get(0).getHTTPHeader(key); return dataSegments.get(0).getHTTPHeader(key);
} }
/** /**
@ -1409,11 +1417,11 @@ final class ChromeCacheExtractor {
* @return header value, null if not found * @return header value, null if not found
*/ */
String getHTTPHeaders() { String getHTTPHeaders() {
if ((dataList == null) || dataList.isEmpty()) { if ((dataSegments == null) || dataSegments.isEmpty()) {
return null; return null;
} }
// First data segment has the HTTP headers, if any // First data segment has the HTTP headers, if any
return dataList.get(0).getHTTPHeaders(); return dataSegments.get(0).getHTTPHeaders();
} }
/** /**
@ -1449,11 +1457,11 @@ final class ChromeCacheExtractor {
(nextAddress != null) ? nextAddress.toString() : "None")); (nextAddress != null) ? nextAddress.toString() : "None"));
for (int i = 0; i < 4; i++) { for (int i = 0; i < 4; i++) {
if (dataSizes[i] > 0) { if (dataSegmentSizes[i] > 0) {
sb.append(String.format("\n\tData %d: cache address = %s, Data = %s", sb.append(String.format("\n\tData %d: cache address = %s, Data = %s",
i, dataAddresses[i].toString(), i, dataSegmentIndexFileEntries[i].toString(),
(dataList != null) (dataSegments != null)
? dataList.get(i).toString() ? dataSegments.get(i).toString()
: "Data not retrived yet.")); : "Data not retrived yet."));
} }
} }