swfdump: fix segfault and endless loop; improved action code output

[swftools.git] / lib / modules / swfaction.c

diff --git a/lib/modules/swfaction.c b/lib/modules/swfaction.c
index 652fd6d..014730b 100644 (file)
--- a/lib/modules/swfaction.c
+++ b/lib/modules/swfaction.c
@@ -13,6 +13,8 @@
 
 #include "../rfxswf.h"
 
+#define MAX_LOOKUP 1024   // make cross references in dumps
+
 struct Action
 {
     int version;
@@ -229,7 +231,7 @@ int OpAdvance(char c, char*data)
                return 1+4; //int
            } else if (type == 8) {
                return 1+1; //lookup
-           }
+           } else return 1;
            break;
        }
     }
@@ -242,8 +244,18 @@ void swf_DumpActions(ActionTAG*atag, char*prefix)
     int t;
     U8*data;
     char* cp;
-    if(!prefix) 
-       prefix="";
+    int entry = 0;
+
+#ifdef MAX_LOOKUP
+
+    char * lookup[MAX_LOOKUP];
+    memset(lookup,0x00,sizeof(lookup));
+
+#endif
+
+   if (!prefix)
+        prefix="";
+
     while(atag)
     {
        U8 poollen = 0;
@@ -278,9 +290,14 @@ void swf_DumpActions(ActionTAG*atag, char*prefix)
                } break;
                case 'c': {
                    printf(" String:\"%s\"", data);
+#ifdef MAX_LOOKUP
+                    if (entry<MAX_LOOKUP)
+                     lookup[entry++] = strdup(data);
+#endif
                } break;
                case 'C': {
                    poollen = *data;
+                    entry = 0;
                    printf("(%d entries)", poollen);
                } break;
                case 's': {
@@ -312,6 +329,10 @@ void swf_DumpActions(ActionTAG*atag, char*prefix)
                        printf(" int:%d", *(int*)value);
                    } else if (type == 8) {
                        printf(" Lookup:%d", *value);
+#ifdef MAX_LOOKUP
+                       if (lookup[*value])
+                         printf(" (\"%s\")",lookup[*value]);
+#endif
                    } else {
                        printf(" UNKNOWN[%02x]",type);
                    }
@@ -341,6 +362,10 @@ void swf_DumpActions(ActionTAG*atag, char*prefix)
        printf("\n");
        atag = atag->next;
     }
+
+#ifdef MAX_LOOKUP
+  for (t=0;t<MAX_LOOKUP;t++) if (lookup[t]) free(lookup[t]);
+#endif
 }
 
 static const char TYPE_URL = 1;