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https://issues.apache.org/jira/browse/FTPSERVER-111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12537947
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Niklas Gustavsson commented on FTPSERVER-111:
---------------------------------------------
Could you please provide a test case (like those in
org.apache.ftpserver.clienttests) for this issue? I'm assuming this happens
when the client sends the same port twice in the PORT command?
> Data channel cannot be opened in active mode
> --------------------------------------------
>
> Key: FTPSERVER-111
> URL: https://issues.apache.org/jira/browse/FTPSERVER-111
> Project: FtpServer
> Issue Type: Bug
> Components: Core
> Environment: Solaris, Linux, maybe others (Windows seems to work)
> Reporter: Rico Neubauer
> Attachments: apache-ftpserver-111-patch.txt
>
>
> FTP-Server with active mode running on Solaris/Linux
> Client connects to the server with active mode.
> Issue list command -> ok
> issue second list command -> client hangs
> Client commands:
> 220 Service ready for new user.
> Name (localhost:username): test
> 331 User name okay, need password for test.
> Password:
> 230 User logged in, proceed.
> Remote system type is UNIX.
> ftp>
> ftp>
> ftp> ls
> 200 Command PORT okay.
> 150 File status okay; about to open data connection.
> directory1
> directory2
> 226 Closing data connection.
> 11 bytes received in 0.0099 seconds (1.08 Kbytes/s)
> ftp> ls
> 200 Command PORT okay.
> 150 File status okay; about to open data connection.
> <Client hangs here>
> Server-Log:
> 15:38:08,581 INFO [UserManagerImpl] authenticate: Authentication for user
> <test> complete.
> 15:38:08,583 DEBUG [UserManagerImpl] setUserConfigurations: Setting up user
> permissions...
> 15:38:08,584 DEBUG [UserManagerImpl] setUserConfigurations: Write permission
> granted for user <test>
> 15:38:08,597 DEBUG [FTPServerFtplet] onLogin:PASS *****
> 15:38:08,627 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] WRITE: 230
> User logged in, proceed.
> 15:38:08,628 INFO [PASS] Login success - test
> 15:38:08,629 DEBUG [ExecutorFilter] Exiting since queue is empty for
> /10.0.0.239:33204
> 15:38:08,629 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] SENT: 230
> User logged in, proceed.
> 15:38:08,630 DEBUG [ExecutorFilter] Launching thread for /10.0.0.239:33204
> 15:38:08,631 DEBUG [ExecutorFilter] Exiting since queue is empty for
> /10.0.0.239:33204
> 15:38:08,631 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] RECEIVED: SYST
> 15:38:08,632 DEBUG [ExecutorFilter] Launching thread for /10.0.0.239:33204
> 15:38:08,632 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] WRITE: 215
> UNIX Type: Apache FTP Server
> 15:38:08,634 DEBUG [ExecutorFilter] Exiting since queue is empty for
> /10.0.0.239:33204
> 15:38:08,634 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] SENT: 215
> UNIX Type: Apache FTP Server
> 15:38:08,635 DEBUG [ExecutorFilter] Launching thread for /10.0.0.239:33204
> 15:38:08,635 DEBUG [ExecutorFilter] Exiting since queue is empty for
> /10.0.0.239:33204
> 15:38:11,153 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] RECEIVED:
> PORT 10,0,0,239,129,181
> 15:38:11,156 DEBUG [ExecutorFilter] Launching thread for /10.0.0.239:33204
> 15:38:11,157 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] WRITE: 510
> PORT is disabled.
> 15:38:11,158 DEBUG [ExecutorFilter] Exiting since queue is empty for
> /10.0.0.239:33204
> 15:38:11,158 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] SENT: 510
> PORT is disabled.
> 15:38:11,159 DEBUG [ExecutorFilter] Launching thread for /10.0.0.239:33204
> 15:38:11,160 DEBUG [ExecutorFilter] Exiting since queue is empty for
> /10.0.0.239:33204
> 15:38:11,160 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] RECEIVED: NLST
> 15:38:11,161 DEBUG [ExecutorFilter] Launching thread for /10.0.0.239:33204
> 15:38:11,161 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] WRITE: 150
> File status okay; about to open data connection.
> 15:38:11,162 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] SENT: 150
> File status okay; about to open data connection.
> 15:38:11,167 WARN [IODataConnectionFactory] FtpDataConnection.getDataSocket()
> java.lang.NullPointerException
> at java.net.Socket.<init>(Socket.java:358)
> at java.net.Socket.<init>(Socket.java:208)
> at
> org.apache.ftpserver.IODataConnectionFactory.createDataSocket(IODataConnectionFactory.java:261)
> at
> org.apache.ftpserver.IODataConnectionFactory.openConnection(IODataConnectionFactory.java:232)
> at org.apache.ftpserver.command.NLST.execute(NLST.java:81)
> at
> org.apache.ftpserver.listener.FtpProtocolHandler.service(FtpProtocolHandler.java:195)
> at
> org.apache.ftpserver.listener.FtpProtocolHandler.onRequestReceived(FtpProtocolHandler.java:122)
> at
> org.apache.ftpserver.listener.mina.MinaFtpProtocolHandler.messageReceived(MinaFtpProtocolHandler.java:106)
> at
> org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived(AbstractIoFilterChain.java:569)
> at
> org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:298)
> at
> org.apache.mina.common.support.AbstractIoFilterChain.access$1200(AbstractIoFilterChain.java:53)
> at
> org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:647)
> at
> org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java:220)
> at
> org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(ExecutorFilter.java:266)
> at
> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
> at
> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
> at java.lang.Thread.run(Thread.java:595)
> 15:38:11,174 DEBUG [NLST] Exception getting the output data stream
> java.lang.NullPointerException
> at java.net.Socket.<init>(Socket.java:358)
> at java.net.Socket.<init>(Socket.java:208)
> at
> org.apache.ftpserver.IODataConnectionFactory.createDataSocket(IODataConnectionFactory.java:261)
> at
> org.apache.ftpserver.IODataConnectionFactory.openConnection(IODataConnectionFactory.java:232)
> at org.apache.ftpserver.command.NLST.execute(NLST.java:81)
> at
> org.apache.ftpserver.listener.FtpProtocolHandler.service(FtpProtocolHandler.java:195)
> at
> org.apache.ftpserver.listener.FtpProtocolHandler.onRequestReceived(FtpProtocolHandler.java:122)
> at
> org.apache.ftpserver.listener.mina.MinaFtpProtocolHandler.messageReceived(MinaFtpProtocolHandler.java:106)
> at
> org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived(AbstractIoFilterChain.java:569)
> at
> org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:298)
> at
> org.apache.mina.common.support.AbstractIoFilterChain.access$1200(AbstractIoFilterChain.java:53)
> at
> org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:647)
> at
> org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java:220)
> at
> org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(ExecutorFilter.java:266)
> at
> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
> at
> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
> at java.lang.Thread.run(Thread.java:595)
> 15:38:11,175 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] WRITE: 425
> Can't open data connection.
> 15:38:11,176 DEBUG [ExecutorFilter] Exiting since queue is empty for
> /10.0.0.239:33204
> 15:38:11,176 INFO [MinaFtpProtocolHandler] [/10.0.0.239:33204] SENT: 425
> Can't open data connection.
> 15:38:11,177 DEBUG [ExecutorFilter] Launching thread for /10.0.0.239:33204
> 15:38:11,177 DEBUG [ExecutorFilter] Exiting since queue is empty for
> /10.0.0.239:33204
> 15:39:38,458 WARN [MinaFtpProtocolHandler] [/10.0.0.239:33204] EXCEPTION:
> org.apache.mina.filter.codec.ProtocolDecoderException:
> java.nio.charset.MalformedInputException: Input length = 1 (Hexdump: empty)
> at
> org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:160)
> at
> org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:298)
> at
> org.apache.mina.common.support.AbstractIoFilterChain.access$1200(AbstractIoFilterChain.java:53)
> at
> org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:647)
> at
> org.apache.mina.common.support.AbstractIoFilterChain$HeadFilter.messageReceived(AbstractIoFilterChain.java:498)
> at
> org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:298)
> at
> org.apache.mina.common.support.AbstractIoFilterChain.fireMessageReceived(AbstractIoFilterChain.java:292)
> at
> org.apache.mina.transport.socket.nio.SocketIoProcessor.read(SocketIoProcessor.java:253)
> at
> org.apache.mina.transport.socket.nio.SocketIoProcessor.process(SocketIoProcessor.java:223)
> at
> org.apache.mina.transport.socket.nio.SocketIoProcessor.access$500(SocketIoProcessor.java:44)
> at
> org.apache.mina.transport.socket.nio.SocketIoProcessor$Worker.run(SocketIoProcessor.java:524)
> at
> org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:39)
> at
> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
> at
> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
> at java.lang.Thread.run(Thread.java:595)
> Caused by: java.nio.charset.MalformedInputException: Input length = 1
> at java.nio.charset.CoderResult.throwException(CoderResult.java:260)
> at org.apache.mina.common.ByteBuffer.getString(ByteBuffer.java:953)
> at
> org.apache.mina.filter.codec.textline.TextLineDecoder.decodeAuto(TextLineDecoder.java:180)
> at
> org.apache.mina.filter.codec.textline.TextLineDecoder.decode(TextLineDecoder.java:113)
> at
> org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:153)
> ... 14 more
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