// Open a single file, list the file attributes, and close the file.
// Returns null if the file doesn't exist or is a directory.
private IFSListAttrsRep listObjAttrs(int attrsType, int flags1, int flags2)
throws IOException, AS400SecurityException {
// Assume connect() has already been done.
IFSListAttrsRep reply = null;
int fileHandle = UNINITIALIZED;
// Design note: In order to get an OA* structure back in the "List File Attributes" reply, we
// must specify the file by handle rather than by name.
boolean usedGlobalHandle = false; // @KKBA
try {
// Open the file, and obtain a file handle.
if (fileHandle_ != UNINITIALIZED) // @KKBA
{ // @KKBA
fileHandle = fileHandle_; // @KKBA
usedGlobalHandle = true; // @KKBA
} // @KKBA
else {
fileHandle = createFileHandle(); // @KKBC
if (fileHandle == UNINITIALIZED) {
if (Trace.traceOn_)
Trace.log(
Trace.ERROR,
"Unable to create handle to file " + path_ + ". IFSReturnCodeRep return code",
errorRC_);
return null;
}
}
// Send a 'list attributes' request, specifying the file handle we just created,
// and indicating that we want an OA2 structure in the reply.
IFSListAttrsReq req1 = new IFSListAttrsReq(fileHandle, attrsType, flags1, flags2);
req1.setPatternMatching(patternMatching_);
Vector replys = listAttributes(req1);
// Verify that we got exactly one reply.
if (replys == null) {
if (Trace.traceOn_)
Trace.log(Trace.WARNING, "Received null from listAttributes(fileHandle).");
} else if (replys.size() == 0) {
if (Trace.traceOn_)
Trace.log(Trace.WARNING, "Received no replies from listAttributes(fileHandle).");
} else if (replys.size() > 1) {
if (Trace.traceOn_)
Trace.log(
Trace.WARNING,
"Received multiple replies from listAttributes(fileHandle) (" + replys.size() + ")");
} else {
reply = (IFSListAttrsRep) replys.elementAt(0);
}
} finally {
if (!usedGlobalHandle && fileHandle != UNINITIALIZED) // @KKBA
close(fileHandle);
}
return reply;
}
// Submit the specified request, and fetch list attributes reply(s).
// The returned Vector contains IFSListAttrsRep objects.
Vector listAttributes(IFSListAttrsReq req) throws IOException, AS400SecurityException {
// Assume connect() has already been done.
errorRC_ = 0;
Vector replys = new Vector(256);
ClientAccessDataStream ds = null;
try {
ds = (ClientAccessDataStream) server_.sendAndReceive(req);
} catch (ConnectionDroppedException e) {
Trace.log(Trace.ERROR, "Byte stream server connection lost.");
connectionDropped(e);
} catch (InterruptedException e) {
Trace.log(Trace.ERROR, "Interrupted");
throw new InterruptedIOException(e.getMessage());
}
// @A1A
int rc = -1; // @A1A
boolean done = false;
do {
if (ds instanceof IFSListAttrsRep) {
replys.addElement(ds);
} else if (ds instanceof IFSReturnCodeRep) {
// If the return code is NO_MORE_FILES then all files
// that match the specification have been returned.
rc = ((IFSReturnCodeRep) ds).getReturnCode();
if (rc != IFSReturnCodeRep.SUCCESS
&& // @D4A
rc != IFSReturnCodeRep.NO_MORE_FILES
&& rc != IFSReturnCodeRep.FILE_NOT_FOUND
&& rc != IFSReturnCodeRep.PATH_NOT_FOUND) {
throwSecurityExceptionIfAccessDenied(path_, rc); // check for "access denied"
Trace.log(
Trace.ERROR,
"Error getting file attributes for file "
+ path_
+ ": "
+ "IFSReturnCodeRep return code",
descriptionForReturnCode(rc));
throw new ExtendedIOException(path_, rc);
}
} else {
// Unknown data stream.
Trace.log(Trace.ERROR, "Unknown reply data stream", ds.data_); // @A9C
throw new InternalErrorException(
Integer.toHexString(ds.getReqRepID()), InternalErrorException.DATA_STREAM_UNKNOWN);
}
// Fetch the next reply if not already done.
done = ((IFSDataStream) ds).isEndOfChain();
if (!done) {
try {
ds = (ClientAccessDataStream) server_.receive(req.getCorrelation());
} catch (ConnectionDroppedException e) {
Trace.log(Trace.ERROR, "Byte stream server connection lost.");
connectionDropped(e);
} catch (InterruptedException e) {
Trace.log(Trace.ERROR, "Interrupted");
throw new InterruptedIOException(e.getMessage());
}
}
} while (!done);
// @A1A
if (rc == IFSReturnCodeRep.PATH_NOT_FOUND) { // @A1A
// If the directory or file does not exist, then return NULL.
errorRC_ = rc;
replys = null; // @A1A
} // @A1A
else { // @A1A
// Set the vector capacity to the current size.
replys.trimToSize();
} // @A1A
return replys;
}