diff options
Diffstat (limited to 'custom_mutators/examples/post_library_png.so.c')
| -rw-r--r-- | custom_mutators/examples/post_library_png.so.c | 24 |
1 files changed, 5 insertions, 19 deletions
diff --git a/custom_mutators/examples/post_library_png.so.c b/custom_mutators/examples/post_library_png.so.c index cd65b1bc..652da497 100644 --- a/custom_mutators/examples/post_library_png.so.c +++ b/custom_mutators/examples/post_library_png.so.c @@ -30,7 +30,7 @@ #include <string.h> #include <zlib.h> #include <arpa/inet.h> -#include "alloc-inl.h" +#include "afl-fuzz.h" /* A macro to round an integer up to 4 kB. */ @@ -53,7 +53,7 @@ void *afl_custom_init(void *afl) { } - state->buf = calloc(sizeof(unsigned char), 4096); + state->buf = calloc(sizeof(unsigned char), MAX_FILE); if (!state->buf) { free(state); @@ -80,21 +80,7 @@ size_t afl_custom_post_process(post_state_t *data, const unsigned char *in_buf, } - /* This is not a good way to do it, if you do not need to grow the buffer - then just work with in_buf instead for speed reasons. - But we want to show how to grow a buffer, so this is how it's done: */ - - unsigned int pos = 8; - unsigned char *new_buf = afl_realloc(out_buf, UP4K(len)); - - if (!new_buf) { - - *out_buf = in_buf; - return len; - - } - - memcpy(new_buf, in_buf, len); + unsigned int pos = 8; /* Minimum size of a zero-length PNG chunk is 12 bytes; if we don't have that, we can bail out. */ @@ -124,7 +110,7 @@ size_t afl_custom_post_process(post_state_t *data, const unsigned char *in_buf, if (real_cksum != file_cksum) { - *(uint32_t *)(new_buf + pos + 8 + chunk_len) = real_cksum; + *(uint32_t *)(data->buf + pos + 8 + chunk_len) = real_cksum; } @@ -134,7 +120,7 @@ size_t afl_custom_post_process(post_state_t *data, const unsigned char *in_buf, } - *out_buf = new_buf; + *out_buf = data->buf; return len; } |