[Swftools-common] swfdump core dump

[Chris Miles]

When using swfdump on swf's with a large constant pool (more than 1024 strings) 
swfdump crashes.

The below patch allows up to 8192 strings in the pool and stops the crash if 
the limit is exceeded.

Chris

$ git branch -v
* master b6e946b fix crashes reported by Debian Cylab Mayhem Team

$ git diff
diff --git a/lib/modules/swfaction.c b/lib/modules/swfaction.c
index bd248ec..52d966c 100644
--- a/lib/modules/swfaction.c
+++ b/lib/modules/swfaction.c
@@ -23,7 +23,8 @@

 #include "../rfxswf.h"

-#define MAX_LOOKUP 1024   // make cross references in dumps
+//#define MAX_LOOKUP 1024   // make cross references in dumps
+#define MAX_LOOKUP 8192   // make cross references in dumps

 struct Action
 {
@@ -466,7 +467,7 @@ void swf_DumpActions(ActionTAG*atag, char*prefix)
                          U32 offset = value[0]+(value[1]<<8);
                          printf(" Lookup16:%d", offset);
 #ifdef MAX_LOOKUP
-                         if (lookup[offset])
+                         if (offset < MAX_LOOKUP && lookup[offset])
                            printf(" (\"%s\")",lookup[offset]);
 #endif
                      } else {
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