/** Abort the current transfer */
private void abortTransfer() {
// logger.debug("Will abort transfer and write: ", write);
FtpFile file = null;
FtpTransfer current = null;
try {
current = getExecutingFtpTransfer();
file = current.getFtpFile();
file.abortFile();
} catch (FtpNoTransferException e) {
logger.warn("Abort problem", e);
} catch (FtpNoFileException e) {
} catch (CommandAbstractException e) {
logger.warn("Abort problem", e);
}
if (current != null) {
current.setStatus(false);
}
endDataConnection();
session.setReplyCode(
ReplyCode.REPLY_426_CONNECTION_CLOSED_TRANSFER_ABORTED,
"Transfer aborted for " + (current == null ? "Unknown command" : current.toString()));
if (current != null) {
if (!FtpCommandCode.isListLikeCommand(current.getCommand())) {
try {
session.getBusinessHandler().afterTransferDoneBeforeAnswer(current);
} catch (CommandAbstractException e) {
session.setReplyCode(e);
}
}
}
finalizeExecution();
}
/** Finish correctly a transfer */
private void closeTransfer() {
// logger.debug("Will close transfer and write: {}", write);
FtpFile file = null;
FtpTransfer current = null;
try {
current = getExecutingFtpTransfer();
file = current.getFtpFile();
file.closeFile();
} catch (FtpNoTransferException e) {
logger.warn("Close problem", e);
} catch (FtpNoFileException e) {
} catch (CommandAbstractException e) {
logger.warn("Close problem", e);
}
if (current != null) {
current.setStatus(true);
}
if (session.getDataConn().isStreamFile()) {
endDataConnection();
}
session.setReplyCode(
ReplyCode.REPLY_226_CLOSING_DATA_CONNECTION,
"Transfer complete for " + (current == null ? "Unknown command" : current.toString()));
if (current != null) {
if (!FtpCommandCode.isListLikeCommand(current.getCommand())) {
try {
session.getBusinessHandler().afterTransferDoneBeforeAnswer(current);
} catch (CommandAbstractException e) {
session.setReplyCode(e);
}
} else {
// Special wait to prevent fast LIST following by STOR or RETR command
try {
Thread.sleep(FtpInternalConfiguration.RETRYINMS);
} catch (InterruptedException e) {
}
}
}
finalizeExecution();
}
/**
* Called when a transfer is finished from setEndOfTransfer
*
* @return True if it was already called before
* @throws FtpNoTransferException
*/
private boolean checkFtpTransferStatus() throws FtpNoTransferException {
if (isCheckAlreadyCalled) {
logger.warn("Check: ALREADY CALLED");
return true;
}
if (isExecutingCommandFinished) {
// already done
logger.warn("Check: already Finished");
if (commandFinishing != null) {
commandFinishing.cancel();
}
throw new FtpNoTransferException("No transfer running");
}
if (!isDataNetworkHandlerReady) {
// already done
logger.warn("Check: already DNH not ready");
throw new FtpNoTransferException("No connection");
}
isCheckAlreadyCalled = true;
FtpTransfer executedTransfer = getExecutingFtpTransfer();
// logger.debug("Check: command {}", executedTransfer.getCommand());
// DNH is ready and Transfer is running
if (FtpCommandCode.isListLikeCommand(executedTransfer.getCommand())) {
if (executedTransfer.getStatus()) {
// Special status for List Like command
// logger.debug("Check: List OK");
closeTransfer();
return false;
}
// logger.debug("Check: List Ko");
abortTransfer();
return false;
} else if (FtpCommandCode.isRetrLikeCommand(executedTransfer.getCommand())) {
FtpFile file = null;
try {
file = executedTransfer.getFtpFile();
} catch (FtpNoFileException e) {
// logger.debug("Check: Retr no FtpFile for Retr");
abortTransfer();
return false;
}
try {
if (file.isInReading()) {
logger.debug("Check: Retr FtpFile still in reading KO");
abortTransfer();
} else {
logger.debug("Check: Retr FtpFile no more in reading OK");
closeTransfer();
}
} catch (CommandAbstractException e) {
logger.warn("Retr Test is in Reading problem", e);
closeTransfer();
}
return false;
} else if (FtpCommandCode.isStoreLikeCommand(executedTransfer.getCommand())) {
// logger.debug("Check: Store OK");
closeTransfer();
return false;
} else {
logger.warn("Check: Unknown command");
abortTransfer();
}
return false;
}
/**
* @return True if the current FtpTransfer is a Retrieve like transfer
* @throws FtpNoTransferException
* @throws CommandAbstractException
* @throws FtpNoFileException
*/
private boolean isExecutingRetrLikeTransfer()
throws FtpNoTransferException, CommandAbstractException, FtpNoFileException {
return FtpCommandCode.isRetrLikeCommand(getExecutingFtpTransfer().getCommand())
&& getExecutingFtpTransfer().getFtpFile().isInReading();
}