diff options
Diffstat (limited to 'src/afl-fuzz-redqueen.c')
| -rw-r--r-- | src/afl-fuzz-redqueen.c | 55 |
1 files changed, 30 insertions, 25 deletions
diff --git a/src/afl-fuzz-redqueen.c b/src/afl-fuzz-redqueen.c index bac7357e..296fcd98 100644 --- a/src/afl-fuzz-redqueen.c +++ b/src/afl-fuzz-redqueen.c @@ -122,9 +122,8 @@ u8 colorization(u8* buf, u32 len, u32 exec_cksum) { while ((rng = pop_biggest_range(&ranges)) != NULL && stage_cur) { u32 s = rng->end - rng->start; - if (s == 0) - goto empty_range; - + if (s == 0) goto empty_range; + memcpy(backup, buf + rng->start, s); rand_replace(buf + rng->start, s); @@ -137,9 +136,11 @@ u8 colorization(u8* buf, u32 len, u32 exec_cksum) { ranges = add_range(ranges, rng->start + s / 2 + 1, rng->end); memcpy(buf + rng->start, backup, s); - } else needs_write = 1; + } else + + needs_write = 1; -empty_range: + empty_range: ck_free(rng); --stage_cur; @@ -156,9 +157,9 @@ empty_range: ck_free(rng); } - + // save the input with the high entropy - + if (needs_write) { s32 fd; @@ -169,7 +170,7 @@ empty_range: } else { - unlink(queue_cur->fname); /* ignore errors */ + unlink(queue_cur->fname); /* ignore errors */ fd = open(queue_cur->fname, O_WRONLY | O_CREAT | O_EXCL, 0600); } @@ -177,10 +178,10 @@ empty_range: if (fd < 0) PFATAL("Unable to create '%s'", queue_cur->fname); ck_write(fd, buf, len, queue_cur->fname); - queue_cur->len = len; // no-op, just to be 100% safe - + queue_cur->len = len; // no-op, just to be 100% safe + close(fd); - + } return 0; @@ -305,24 +306,27 @@ u8 cmp_extend_encoding(struct cmp_header* h, u64 pattern, u64 repl, u32 idx, void try_to_add_to_dict(u64 v, u8 shape) { u8* b = (u8*)&v; - + u32 k; - u8 cons_ff = 0, cons_0 = 0; + u8 cons_ff = 0, cons_0 = 0; for (k = 0; k < shape; ++k) { - if (b[k] == 0) ++cons_0; - else if (b[k] == 0xff) ++cons_0; - else cons_0 = cons_ff = 0; - - if (cons_0 > 1 || cons_ff > 1) - return; + if (b[k] == 0) + ++cons_0; + else if (b[k] == 0xff) + ++cons_0; + else + cons_0 = cons_ff = 0; + + if (cons_0 > 1 || cons_ff > 1) return; } - + maybe_add_auto((u8*)&v, shape); - + u64 rev; switch (shape) { + case 1: break; case 2: rev = SWAP16((u16)v); @@ -336,8 +340,9 @@ void try_to_add_to_dict(u64 v, u8 shape) { rev = SWAP64(v); maybe_add_auto((u8*)&rev, shape); break; + } - + } u8 cmp_fuzz(u32 key, u8* orig_buf, u8* buf, u32 len) { @@ -380,13 +385,13 @@ u8 cmp_fuzz(u32 key, u8* orig_buf, u8* buf, u32 len) { break; } - + // If failed, add to dictionary if (fails == 8) { - + try_to_add_to_dict(o->v0, SHAPE_BYTES(h->shape)); try_to_add_to_dict(o->v1, SHAPE_BYTES(h->shape)); - + } cmp_fuzz_next_iter: |