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Support multiple custom mutators (#282)

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* Make a list of custom mutators using env variable

* Set up multiple custom mutators

* Add destroy custom mutator and changes to load_custom_mutator

* Use array instead of list, make changes to afl-fuzz-one for multiple mutators

* Make change to fuzz-one custom_queue_get to support multiple mutators

* Modify custom python mutator support

* Fix bug

* Fix missing afl->mutator->data

* Revert to list with max count

* Change custom_pre_save hook and code format

* Free custom_mutator struct in the list

* Add testcase for multiple custom mutators

* Resolve merge conflict
This commit is contained in:
Rishi Ranjan
2020-05-08 23:38:27 +05:30
committed by GitHub
parent 768053b6f2
commit 190f3024da
10 changed files with 363 additions and 254 deletions
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17
include/afl-fuzz.h
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@ -605,8 +605,11 @@ typedef struct afl_state {
u8 * in_scratch_buf;
size_t in_scratch_size;
u8 * ex_buf;
size_t ex_size;
u8 * ex_buf;
size_t ex_size;
u32 custom_mutators_count;
list_t custom_mutator_list;
/* this is a fixed buffer of size map_size that can be used by any function if
* they do not call another function */
@ -620,6 +623,8 @@ struct custom_mutator {
void * dh;
u8 * pre_save_buf;
size_t pre_save_size;
u8 stacked_custom_prob,
stacked_custom;
void *data; /* custom mutator data ptr */
@ -808,14 +813,14 @@ void read_afl_environment(afl_state_t *, char **);
/**** Prototypes ****/
/* Custom mutators */
void setup_custom_mutator(afl_state_t *);
void destroy_custom_mutator(afl_state_t *);
u8 trim_case_custom(afl_state_t *, struct queue_entry *q, u8 *in_buf);
void setup_custom_mutators(afl_state_t *);
void destroy_custom_mutators(afl_state_t *);
u8 trim_case_custom(afl_state_t *, struct queue_entry *q, u8 *in_buf, struct custom_mutator * mutator);
/* Python */
#ifdef USE_PYTHON
void load_custom_mutator_py(afl_state_t *, char *);
struct custom_mutator * load_custom_mutator_py(afl_state_t *, char *);
void finalize_py_module(void *);
size_t pre_save_py(void *, u8 *, size_t, u8 **);