Changeset 1720 for zzuf/trunk/src/fuzz.cTweet

Timestamp:

Jan 27, 2007, 8:05:46 PM (16 years ago)

Author:

Sam Hocevar

Message:

• Implemented -f/--fuzzing (fuzzing mode).

File:

• zzuf/trunk/src/fuzz.c (modified) (4 diffs)

zzuf/trunk/src/fuzz.c

@@ -37 +37 @@
 #define MAGIC2 0x783bc31f
 
+/* Fuzzing mode */
+static enum fuzzing
+{
+    FUZZING_XOR = 0, FUZZING_SET, FUZZING_UNSET
+}
+fuzzing;
+
 /* Per-offset byte protection */
 static unsigned int *ranges = NULL;
@@ -47 +54 @@
 /* Local prototypes */
 static void readchars(int *, char const *);
+
+extern void _zz_fuzzing(char const *mode)
+{
+    if(!strcmp(mode, "xor"))
+        fuzzing = FUZZING_XOR;
+    else if(!strcmp(mode, "set"))
+        fuzzing = FUZZING_SET;
+    else if(!strcmp(mode, "unset"))
+        fuzzing = FUZZING_UNSET;
+}
 
 void _zz_bytes(char const *list)
@@ -144 +161 @@
         {
             unsigned int *r;
-            uint8_t byte;
+            uint8_t byte, fuzzbyte;
 
             if(!ranges)
@@ -161 +178 @@
                 continue;
 
-            byte ^= fuzz->data[j % CHUNKBYTES];
+            fuzzbyte = fuzz->data[j % CHUNKBYTES];
+
+            if(!fuzzbyte)
+                continue;
+
+            switch(fuzzing)
+            {
+            case FUZZING_XOR:
+                byte ^= fuzzbyte;
+                break;
+            case FUZZING_SET:
+                byte |= fuzzbyte;
+                break;
+            case FUZZING_UNSET:
+                byte &= ~fuzzbyte;
+                break;
+            }
 
             if(refuse[byte])