IV36071: FTPD RETURNS 550 ERROR W/LIST FOR FILE NOT FOUND APPLIES TO AIX 6100-09

Fix pending

APAR status

• Closed as program error.

Error description

• The FTP server (ftpd) returns an error "550" for file not
  found when executing the LIST command to query an exact
  filename as follows. The wild card * is not used.
  
  ftp> ls abc
  200 PORT command successful.
  550 abc: A file or directory in the path name does not
  exist
  
  This behavior is not compliant with RFC 959.
  For consistency, this command should return the
  successful
  completion codes and no data files, as follows:
  
  ftp> ls abc
  200 PORT command successful.
  150 Opening data connection for abc.
  226 Transfer complete.
  
  Additional Note:
  The wild card * pattern matching case is working
  correctly:
  
  ftp> ls abc*
  200 PORT command successful.
  150 Opening data connection for abc*
  226 Transfer complete.
  
  Reference RFC 959, p51.
  LIST
     125, 150
        226, 250
        425, 426, 451
     450
     500, 501, 502, 421, 530
  

Local fix

Problem summary

• When executing NLST FTP sub-command on a non existing
  file/directory in AIX FTP server, the ftp client will
  display 550 as return code.
  
  For eg:
  ftp> ls abc
  200 PORT command successful.
  550 abc: A file or directory in the path name does not exist.
  ftp>
  Return code 550 for NLST cmd is non compliance with rfc 959.
  

Problem conclusion

• Modified FTP server code to open a data connection and send 150
  or 125 message if data connection succeeds, or 425 message if
  data connection fails. Followed by 150/125 message, send 226
  message when NLST command is run on any non existing
  file/directory.
  

Temporary fix

Comments

• 6100-09 - use AIX APAR IV36071
  7100-03 - use AIX APAR IV36935
  

APAR Information

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

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

  IV36935

Fix information

• Fixed component name

  AIX 610 STD EDI

• Fixed component ID

  5765G6200

Applicable component levels

• R610 PSY U855283

     UP13/11/21 I 1000

PTF to Fileset Mapping

• U855283 bos.net.tcp.client 6.1.9.0