/**
* Check if the file can be opened depending on any current file opens and the sharing mode of the
* first file open
*
* @param params FileOpenParams
* @return boolean
*/
public final boolean allowsOpen(FileOpenParams params) {
// If the file is not currently open then allow the file open
if (getOpenCount() == 0) return true;
// Check the shared access mode
if (getSharedAccess() == SharingMode.READWRITE
&& params.getSharedAccess() == SharingMode.READWRITE) return true;
else if ((getSharedAccess() & SharingMode.READ) != 0 && params.isReadOnlyAccess()) return true;
else if ((getSharedAccess() & SharingMode.WRITE) != 0 && params.isWriteOnlyAccess())
return true;
// Sharing violation, do not allow the file open
return false;
}
@Override
public NetworkFile createFile(SrvSession sess, TreeConnection tree, FileOpenParams params)
throws IOException {
try {
int attr = params.getAttributes();
if (logger.isDebugEnabled()) {
int sharedAccess = params.getSharedAccess();
String strSharedAccess = SharingMode.getSharingModeAsString(sharedAccess);
logger.debug(
"createFile:"
+ params.getPath()
+ ", isDirectory: "
+ params.isDirectory()
+ ", isStream: "
+ params.isStream()
+ ", readOnlyAccess: "
+ params.isReadOnlyAccess()
+ ", readWriteAccess: "
+ params.isReadWriteAccess()
+ ", writeOnlyAccess:"
+ params.isWriteOnlyAccess()
+ ", attributesOnlyAccess:"
+ params.isAttributesOnlyAccess()
+ ", sequentialAccessOnly:"
+ params.isSequentialAccessOnly()
+ ", requestBatchOpLock:"
+ params.requestBatchOpLock()
+ ", requestExclusiveOpLock:"
+ params.requestExclusiveOpLock()
+ ", isDeleteOnClose:"
+ params.isDeleteOnClose()
+ ", sharedAccess: "
+ strSharedAccess
+ ", allocationSize: "
+ params.getAllocationSize()
+ ", isHidden:"
+ FileAttribute.isHidden(attr)
+ ", isSystem:"
+ FileAttribute.isSystem(attr));
}
long creationDateTime = params.getCreationDateTime();
if (creationDateTime != 0) {
logger.debug("creationDateTime is set:" + new Date(creationDateTime));
}
ContentContext tctx = (ContentContext) tree.getContext();
NodeRef rootNode = tctx.getRootNode();
String[] paths = FileName.splitPath(params.getPath());
String folder = paths[0];
String file = paths[1];
DriverState driverState = getDriverState(sess);
EvaluatorContext ctx = getEvaluatorContext(driverState, folder);
Operation o =
new CreateFileOperation(
file,
rootNode,
params.getPath(),
params.getAllocationSize(),
FileAttribute.isHidden(attr));
Command c = ruleEvaluator.evaluate(ctx, o);
Object ret = commandExecutor.execute(sess, tree, c);
if (ret != null && ret instanceof NetworkFile) {
return (NetworkFile) ret;
} else {
// Error - contact broken
logger.error(
"contract broken - NetworkFile not returned. " + ret == null
? "Return value is null"
: ret);
return null;
}
} catch (org.alfresco.repo.security.permissions.AccessDeniedException ade) {
throw new AccessDeniedException("Unable to create file " + params.getPath(), ade);
}
}
@Override
public NetworkFile openFile(SrvSession sess, TreeConnection tree, FileOpenParams param)
throws IOException {
String path = param.getPath();
boolean truncate = param.isOverwrite();
if (logger.isDebugEnabled()) {
int sharedAccess = param.getSharedAccess();
String strSharedAccess = SharingMode.getSharingModeAsString(sharedAccess);
logger.debug(
"openFile:"
+ path
+ ", isDirectory: "
+ param.isDirectory()
+ ", isStream: "
+ param.isStream()
+ ", readOnlyAccess: "
+ param.isReadOnlyAccess()
+ ", readWriteAccess: "
+ param.isReadWriteAccess()
+ ", writeOnlyAccess:"
+ param.isWriteOnlyAccess()
+ ", attributesOnlyAccess:"
+ param.isAttributesOnlyAccess()
+ ", sequentialAccessOnly:"
+ param.isSequentialAccessOnly()
+ ", writeThrough:"
+ param.isWriteThrough()
+ ", truncate:"
+ truncate
+ ", requestBatchOpLock:"
+ param.requestBatchOpLock()
+ ", requestExclusiveOpLock:"
+ param.requestExclusiveOpLock()
+ ", isDeleteOnClose:"
+ param.isDeleteOnClose()
+ ", allocationSize:"
+ param.getAllocationSize()
+ ", sharedAccess: "
+ strSharedAccess
+ ", openAction: "
+ param.getOpenAction()
+ param);
}
ContentContext tctx = (ContentContext) tree.getContext();
NodeRef rootNode = tctx.getRootNode();
DriverState driverState = getDriverState(sess);
String[] paths = FileName.splitPath(path);
String folder = paths[0];
String file = paths[1];
EvaluatorContext ctx = getEvaluatorContext(driverState, folder);
OpenFileMode openMode = OpenFileMode.READ_ONLY;
if (param.isAttributesOnlyAccess()) {
openMode = OpenFileMode.ATTRIBUTES_ONLY;
} else if (param.isReadWriteAccess()) {
openMode = OpenFileMode.READ_WRITE;
} else if (param.isWriteOnlyAccess()) {
openMode = OpenFileMode.WRITE_ONLY;
} else if (param.isReadOnlyAccess()) {
openMode = OpenFileMode.READ_ONLY;
} else if (param.isDeleteOnClose()) {
if (logger.isDebugEnabled()) {
logger.debug("open file has delete on close");
}
openMode = OpenFileMode.DELETE;
}
try {
Operation o = new OpenFileOperation(file, openMode, truncate, rootNode, path);
Command c = ruleEvaluator.evaluate(ctx, o);
Object ret = commandExecutor.execute(sess, tree, c);
if (ret != null && ret instanceof NetworkFile) {
NetworkFile x = (NetworkFile) ret;
if (logger.isDebugEnabled()) {
logger.debug("returning open file: for path:" + path + ", ret:" + ret);
}
return x;
} else {
// Error - contact broken
logger.error(
"contract broken - NetworkFile not returned. " + ret == null
? "Return value is null"
: ret);
return null;
}
} catch (org.alfresco.repo.security.permissions.AccessDeniedException ade) {
throw new AccessDeniedException("Unable to open file " + param.getPath(), ade);
}
// return diskInterface.openFile(sess, tree, params);
} // End of OpenFile
/**
* Create a file segment to load/save the file data
*
* @param state FileState
* @param params FileOpenParams
* @param fname String
* @param fid int
* @param stid int
* @param did int
* @return CachedNetworkFile
* @exception IOException
*/
private final CachedNetworkFile createNetworkFile(
FileState state, FileOpenParams params, String fname, int fid, int stid, int did)
throws IOException {
// The file state is used to synchronize the creation of the file segment as there may be other
// sessions opening the file at the same time. We have to be careful that only one thread
// creates the
// file segment.
FileSegment fileSeg = null;
CachedNetworkFile netFile = null;
synchronized (state) {
// Check if the file segment has been attached to the file state
FileSegmentInfo fileSegInfo = (FileSegmentInfo) state.findAttribute(DBFileSegmentInfo);
if (fileSegInfo == null) {
// Check if we need to create a new temporary sub-drectory
if (m_tempCount++ >= m_tempMax) createNewTempDirectory();
// Create a unique temporary file name
StringBuffer tempName = new StringBuffer();
tempName.append(getTempFilePrefix());
tempName.append(fid);
if (stid > 0) {
tempName.append("_");
tempName.append(stid);
// DEBUG
if (Debug.EnableInfo && hasDebug()) Debug.println("## Temp file for stream ##");
}
tempName.append(".tmp");
// Create a new file segment
fileSegInfo = new FileSegmentInfo();
fileSeg =
FileSegment.createSegment(
fileSegInfo, tempName.toString(), m_curTempDir, params.isReadOnlyAccess() == false);
// Add the segment to the file state cache
state.addAttribute(DBFileSegmentInfo, fileSegInfo);
// Check if the file is zero length, if so then set the file segment state to indicate it is
// available
DBFileInfo finfo = (DBFileInfo) state.findAttribute(FileState.FileInformation);
if (finfo != null && finfo.getSize() == 0) fileSeg.setStatus(FileSegmentInfo.Available);
} else {
// Create the file segment to map to the existing temporary file
fileSeg = new FileSegment(fileSegInfo, params.isReadOnlyAccess() == false);
// Check if the temporary file exists, if not then create it
File tempFile = new File(fileSeg.getTemporaryFile());
if (tempFile.exists() == false) {
// Create the temporary file
tempFile.createNewFile();
// Reset the file segment state to indicate a file load is required
fileSeg.setStatus(FileSegmentInfo.Initial);
}
}
// Create the new network file
netFile =
new CachedNetworkFile(
fname, fid, stid, did, m_stateCache.getFileStateProxy(state), fileSeg, this);
netFile.setGrantedAccess(
params.isReadOnlyAccess() ? NetworkFile.READONLY : NetworkFile.READWRITE);
netFile.setSequentialOnly(params.isSequentialAccessOnly());
netFile.setAttributes(params.getAttributes());
netFile.setFullName(params.getPath());
if (stid != 0) netFile.setStreamName(params.getStreamName());
}
// Return the network file
return netFile;
}