PI07707: ASCII MODE GETADDRINFO CALL FAILS IF ONLY VALID HEX CHARACTERS ARE IN HOSTNAME

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Unpredictable results occur with ASCII mode caller
  GETADDRINFO when called with a host name that contains valid
  hex values.  The resolver code handling the getaddrinfo is
  attempting to figure out if the value passed is an IPv6 address
  or a hostname, but during this processing incorrect ascii ti
  ebcdic transtaion is being done causing a bad value to be
  passed on the getaddrinfo call.
  
  an example of a host name that would fail would be BBA1 or
  AABBCCD1 and a working hostname would be BBS1 or AABBCCZ1
  
  
  
  
  
  
  
  Additional Symptom(s) Search Keyword(s): ASCII mode GETADDRINFO
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the IBM Communications Server   *
  *                 for z/OS Version 1 Release 13: IP Resolver   *
  ****************************************************************
  * PROBLEM DESCRIPTION: When getaddrinfo() is called to         *
  *                      translate an ASCII hostname the         *
  *                      hostname become mangled and a host      *
  *                      name not found is returned to the       *
  *                      caller.                                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The hostname is translated from ASCII to EBCDIC to preform a
  test for an IPv6 address.  The host name is not an IPv6 address.
  The host name is left in EBCDIC where it is translated again
  from ASCII to EBCDIC resulting in a mangled name that cannot be
  found.
  +-------------------------------------------------------------+
  + Please check our Communications Server for OS/390 homepages +
  + for common networking tips and fixes.  The URL for these    +
  + homepages can be found in Informational APAR II11334.       +
  +-------------------------------------------------------------+
  

Problem conclusion

• The getaddrinfo() function will be amended to translate the host
  name to EBCDIC in a temporary work area.
  
  * Cross Reference between External and Internal Names
  

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:

  UI14007 PI09477

Modules/Macros

• EZBREGAI
  

Fix information

• Fixed component name

  TCP/IP V3 MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R1D0 PSY UI14007

     UP14/03/07 P F403

Fix is available

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