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-rw-r--r--include/afl-fuzz.h7
-rw-r--r--include/config.h26
2 files changed, 29 insertions, 4 deletions
diff --git a/include/afl-fuzz.h b/include/afl-fuzz.h
index c9f84c61..ca785e47 100644
--- a/include/afl-fuzz.h
+++ b/include/afl-fuzz.h
@@ -139,7 +139,8 @@ struct queue_entry {
var_behavior, /* Variable behavior? */
favored, /* Currently favored? */
fs_redundant, /* Marked as redundant in the fs? */
- fully_colorized; /* Do not run redqueen stage again */
+ fully_colorized, /* Do not run redqueen stage again */
+ is_ascii; /* Is the input just ascii text? */
u32 bitmap_size, /* Number of bits set in bitmap */
fuzz_level; /* Number of fuzzing iterations */
@@ -947,7 +948,7 @@ u8 input_to_state_stage(afl_state_t *afl, u8 *orig_buf, u8 *buf, u32 len,
u64 exec_cksum);
/* xoshiro256** */
-uint64_t rand_next(afl_state_t *afl);
+uint32_t rand_next(afl_state_t *afl);
/**** Inline routines ****/
@@ -967,7 +968,7 @@ static inline u32 rand_below(afl_state_t *afl, u32 limit) {
}
- return rand_next(afl) % limit;
+ return (rand_next(afl) % limit);
}
diff --git a/include/config.h b/include/config.h
index 087e0a76..09405a22 100644
--- a/include/config.h
+++ b/include/config.h
@@ -293,7 +293,7 @@
/* Call count interval between reseeding the libc PRNG from /dev/urandom: */
-#define RESEED_RNG 100000
+#define RESEED_RNG 256000
/* Maximum line length passed from GCC to 'as' and used for parsing
configuration files: */
@@ -397,5 +397,29 @@
// #define IGNORE_FINDS
+/* Text mutations */
+
+/* What is the minimum length of a queue input to be evaluated for "is_ascii"?
+ */
+
+#define AFL_TXT_MIN_LEN 12
+
+/* What is the minimum percentage of ascii characters present to be classifed
+ as "is_ascii"? */
+
+#define AFL_TXT_MIN_PERCENT 95
+
+/* How often to perform ASCII mutations 0 = disable, 1-8 are good values */
+
+#define AFL_TXT_BIAS 8
+
+/* Maximum length of a string to tamper with */
+
+#define AFL_TXT_STRING_MAX_LEN 1024
+
+/* Maximum mutations on a string */
+
+#define AFL_TXT_STRING_MAX_MUTATIONS 6
+
#endif /* ! _HAVE_CONFIG_H */