QCTDNS is not correctly initialised when no activity. Validate record contents.

Author: ibmmqmet

README.md

@@ -71,6 +71,9 @@ Oct 2017
 * Found that some 115 subtypes do not have a QWHS structure correctly
 created; cannot rely on it being there
 
+Jan 2018
+* QCTDNS structure is not initialised when there hae been no activity
+
 
 Pull requests
 =============

bin/aix/convH

@@ -13,7 +13,7 @@ else
   targdir="../bin/linux"
 fi
 
-export PLATFLAGS=$flags CC=$cc VERS=903
+export PLATFLAGS=$flags CC=$cc VERS=904
 make -e -f Makefile.unix $*
 
 rm -f $targdir/convH $targdir/mqsmfcsv

bin/aix/mqsmfcsv

@@ -2,7 +2,7 @@
 CC=i686-w64-mingw32-gcc
 CFLAGS= -I. -m32
 PLATFLAGS=
-VERS=903
+VERS=904
 SRC = mqsmf.c \
       smfDDL.c \
       smfDate.c \

bin/linux/convH

@@ -1,5 +1,5 @@
 CFLAGS=-nologo /D_CRT_SECURE_NO_WARNINGS /Zp1 /J
-VERS=903
+VERS=904
 SRC = mqsmf.c \
       smfDDL.c \
       smfDate.c \
@@ -39,10 +39,10 @@ mqsmfcsv.exe: $(SRC) $(HDR) Makefile.win
 	del /q *.obj
 	copy $@ ..\bin\win
 
-mqsmfstruc.h: csqdsmfc-$(VERS).h convH dummy
+mqsmfstruc.h: csqdsmfc-$(VERS).h convH.exe dummy
 	convH < csqdsmfc-$(VERS).h > $@
 
-convH: convH.c
+convH.exe: convH.c
 	$(CC) /Fe$@ convH.c
 	copy $@ ..\bin\win
 

bin/linux/mqsmfcsv

@@ -664,7 +664,12 @@ int main( int argc, char *argv[] )
               case 2: printQCTDSP((qct_dsp *)p);break;
               case 3: printQCTADP((qct_adp *)p);break;
               case 4: printQCTSSL((qct_ssl *)p);break;
-              case 5: printQCTDNS((qct_dns *)p);break;
+              /* If nothing has been done with DNS in this interval, the
+                 record seems to be present but contain garbage.
+               */
+              case 5: if (triplet[i].l == sizeof(qct_dns)) 
+                          printQCTDNS((qct_dns *)p);
+                      break;
               default: break;
               }
             }