IV22933: DISCO IP MALFORM

ITNMIP_Patch_V3.8.0.89_AIXPPC32
3.8.0-TIV-ITNMIP-Linux-REF-FP0007
3.8.0-TIV-ITNMIP-Solaris-REF-FP0007
ITNMIP_Patch_V3.8.0.89_Win32
IBM Tivoli Network Manager IP 3.9.0 Fix Pack 3, 3.9.0-TIV-ITNMIP-FP0003
IBM Tivoli Network Manager IP 3.9.0 Fix Pack 4, 3.9.0-TIV-ITNMIP-FP0004
IBM Tivoli Network Manager IP Edition 3.9.0 Fix Pack 5, 3.9.0-TIV-ITNMIP-FP0005

APAR status

• Closed as program error.

Error description

• ITNM 3.8 FP5
  Linux
  
  When disco encounter Ip addresses malformed (If the IP Address
  is not valid (e.g. 5 octets) or empty) it crases.Stitcher
  IsInSubnet fails.
  
  ------------------------
  Workaround provided:
  
  We put a workaround in place to avoid that, by creating the
  stitcher
  STIME_Util_IsInSubnet.stch.
  
  flag = ExecuteStitcher("STIME_Util_IsInSubnet", accessAddress,
  subnet,
  subnetMask);
  
  The CODE for stitcher STIME_Util_IsInSubnet.stch is :
  //
  // Stitcher that adds an entity to the list of RCA Virtual
  Entities
  //
  // Input
  // 1 - entityName of the virtual entity
  //
  UserDefinedStitcher
  {
    StitcherTrigger
    {
      // This is kicked off by another stitcher
      ActOnDemand();
    }
  
    StitcherRules
    {
      text ip = eval(text, '$ARG_1');
      text subnet = eval(text, '$ARG_2');
      text mask = eval(text, '$ARG_3');
      int flag = -1;
  
      if (ip != NULL) {
        if (subnet != NULL) {
          if (mask != NULL) {
            // Make sure the ip is indeed an ipv4
            ip = eval(text, 'REGEXPMATCH($ip,
  `(\d+\.\d+\.\d+\.\d+)$`)');
            if (ip != "") {
              flag = IsInSubnet(ip, subnet, mask);
            }
          }
        }
      }
      SetReturnValue(flag);
    }
  }
  

Local fix

• We put a workaround in place to avoid that, by creating the
  stitcher
  STIME_Util_IsInSubnet.stch.
  
  flag = ExecuteStitcher("STIME_Util_IsInSubnet", accessAddress,
  subnet,
  subnetMask);
  
  The CODE for stitcher STIME_Util_IsInSubnet.stch is :
  //
  // Stitcher that adds an entity to the list of RCA Virtual
  Entities
  //
  // Input
  // 1 - entityName of the virtual entity
  //
  UserDefinedStitcher
  {
    StitcherTrigger
    {
      // This is kicked off by another stitcher
      ActOnDemand();
    }
  
    StitcherRules
    {
      text ip = eval(text, '$ARG_1');
      text subnet = eval(text, '$ARG_2');
      text mask = eval(text, '$ARG_3');
      int flag = -1;
  
      if (ip != NULL) {
        if (subnet != NULL) {
          if (mask != NULL) {
            // Make sure the ip is indeed an ipv4
            ip = eval(text, 'REGEXPMATCH($ip,
  `(\d+\.\d+\.\d+\.\d+)$`)');
            if (ip != "") {
              flag = IsInSubnet(ip, subnet, mask);
            }
          }
        }
      }
      SetReturnValue(flag);
    }
  }
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users with malformed IP discovery                        *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * When disco encounter Ip addresses malformed (If the IP       *
  * Address is not valid (e.g. 5 octets) or empty). disco cores  *
  * in IsInSubnet check.                                         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Apply testfix of IV22933                                     *
  * | fix pack | 3.9.0-ITNMIP-FP0003                             *
  * | fix pack | 3.8.0-ITNMIP-FP0007                             *
  ****************************************************************
  

Problem conclusion

• The invalid IP address is detected in IsInSubnet check. However
  it tries to print the warning message with null record string.
  Need to check for the NULL pointer before any attempt for print
  string.
  
  The following fixpacks will contain the fix:
  | fix pack | 3.8.0-ITNMIP-FP0007
  | fix pack | 3.9.0-ITNMIP-FP0003
  

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

  TIV NETWK MGR I

• Fixed component ID

  5724S4500

Applicable component levels