Fixed name collision problem
MODIFY
custom_mutators/symcc/symcc.c
custom_mutators/symcc/symcc.c
@@ -24,6 +24,7 @@ typedef struct my_mutator {
afl_state_t *afl;
u8 * mutator_buf;
u8 * out_dir;
+ u8 * tmp_dir;
u8 * target;
uint32_t seed;
@@ -57,10 +58,11 @@ my_mutator_t *afl_custom_init(afl_state_t *afl, unsigned int seed) {
if (!(data->out_dir = getenv("SYMCC_OUTPUT_DIR"))) {
data->out_dir = alloc_printf("%s/symcc", afl->out_dir);
- setenv("SYMCC_OUTPUT_DIR", data->out_dir, 1);
}
+ data->tmp_dir = alloc_printf("%s/tmp", data->out_dir);
+ setenv("SYMCC_OUTPUT_DIR", data->tmp_dir, 1);
int pid = fork();
if (pid == -1) return NULL;
@@ -86,6 +88,10 @@ my_mutator_t *afl_custom_init(afl_state_t *afl, unsigned int seed) {
if (mkdir(data->out_dir, 0755))
PFATAL("Could not create directory %s", data->out_dir);
+
+ if (mkdir(data->tmp_dir, 0755))
+ PFATAL("Could not create directory %s", data->tmp_dir);
+
DBG("out_dir=%s, target=%s\n", data->out_dir, data->target);
return data;
@@ -150,6 +156,39 @@ void afl_custom_queue_new_entry(my_mutator_t * data,
pid = waitpid(pid, NULL, 0);
+ // At this point we need to transfer files to output dir, since their names
+ // collide and symcc will just overwrite them
+
+ struct dirent **nl;
+ int32_t items = scandir(data->tmp_dir, &nl, NULL, NULL);
+ u8 * origin_name = basename(filename_new_queue);
+ int32_t i;
+ if (items > 0) {
+
+ for (i = 0; i < (u32)items; ++i) {
+
+ struct stat st;
+ u8 *source_name = alloc_printf("%s/%s", data->tmp_dir, nl[i]->d_name);
+ u8 *destination_name =
+ alloc_printf("%s/%s.%s", data->out_dir, origin_name, nl[i]->d_name);
+ DBG("test=%s\n", fn);
+ if (stat(source_name, &st) == 0 && S_ISREG(st.st_mode) && st.st_size) {
+
+ rename(source_name, destination_name);
+ DBG("found=%s\n", source_name);
+
+ }
+
+ ck_free(source_name);
+ ck_free(destination_name);
+ free(nl[i]);
+
+ }
+
+ free(nl);
+
+ }
+
}
if (pid == 0) {

Fixed name collision problem