IC89856: WMQFTE: CWD CMD IS SEND TO FTP OR SFTP SERVERS EVEN IF THERE IS NO LEADING SLASH CHAR AT THE START OF THE ATTRIBUTE VALUE

WebSphere MQ File Transfer Edition V7.0 Fix Pack 7.0.4.3

APAR status

• Closed as program error.

Error description

• Protocol Bridge Agents should only send the 'CWD' command to FTP
  or SFTP servers if there is a leading slash character at the
  start of the: <file> element in the <transferSet>.
  
  For example, the <file> element could look like the following:
  
  <file>myftpserver:/MYFILE.EXT</file>
  
  This led to the error :
  08:44:08.390.0Q 0011 [[FILE]PB-FTP-RX : 500 Syntax error,
  command CWD unrecognized .
  
  This problem is solved in WebSphere MQ Managed File Transfer
  Edition V7.5.0 Protocol Bridge Agents.
  

Local fix

• Workaround: Use a double slash at the start of the
  filespecification, such
  as:equens://MFC.R0006245.VERWINF*.*.ZIP
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  This issue affects users of WebSphere MQ File Transfer Edition
  V7.0.4 who use a Protocol Bridge Agent to retrieve files from an
  FTP, FTPS or SFTP server.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM SUMMARY:
  When receiving files from an FTP, FTPS or SFTP server, the
  Protocol Bridge Agent uses the information in the file
  specification it has been given in order to locate the file on
  the FTP, FTPS or SFTP server. The Protocol Bridge Agent breaks
  the file specification up into two parts:
  
  - The directory where the file is located.
  - The name of the file.
  
  It then issues the command:
  
  CWD <directory name>
  
  to the FTP, FTPS or SFTP server, to change into the correct
  directory, before requesting the file.
  
  The Protocol Bridge Agent assumed that the file specification
  would always contain a directory, which was incorrect. If the
  Protocol Bridge Agent was passed a file specification that
  just contained a filename, then it sent a CWD command with no
  arguments to the FTP, FTPS or SFTP server. This caused the FTP
  or SFTP server to return the error:
  
  500 Syntax error, command CWD unrecognized
  
  to the Protocol Bridge Agent, which resulted in the file
  transfer failing.
  

Problem conclusion

• The Protocol Bridge Agent has been updated to only send the
  CWD command to an FTP, FTPS or SFTP server if the file
  specification contains a directory path.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Platform           v7.0
  --------           --------------------
  Multiplatforms     7.0.4.3
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  ---------------------------------------------------------------
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WMQ FILE TRANSF

• Fixed component ID

  5724R1000

Applicable component levels

• R704 PSY

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