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[fuzzing] Fuzz input text 

Very rudimentary right now, but will get kcc's bot going.

From
https://github.com/behdad/harfbuzz/issues/139#issuecomment-163580783
This commit is contained in:
Behdad Esfahbod 2016-01-11 18:31:04 +00:00
parent 3e704521f6
commit 505b7d4732
1 changed files with 19 additions and 6 deletions
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19
test/fuzzing/hb-fuzzer.cc
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@ -1,9 +1,9 @@
#include <stddef.h> #include <stddef.h>
#include <hb.h> #include <hb.h>
#include <hb-ot.h> #include <hb-ot.h>
#include <string.h>
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
const char text[] = "ABCDEXYZ123@_%&)*$!";
hb_blob_t *blob = hb_blob_create((const char *)data, size, hb_blob_t *blob = hb_blob_create((const char *)data, size,
HB_MEMORY_MODE_READONLY, NULL, NULL); HB_MEMORY_MODE_READONLY, NULL, NULL);
@ -12,13 +12,26 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
hb_ot_font_set_funcs(font); hb_ot_font_set_funcs(font);
hb_font_set_scale(font, 12, 12); hb_font_set_scale(font, 12, 12);
{
const char text[] = "ABCDEXYZ123@_%&)*$!";
hb_buffer_t *buffer = hb_buffer_create(); hb_buffer_t *buffer = hb_buffer_create();
hb_buffer_add_utf8(buffer, text, -1, 0, -1); hb_buffer_add_utf8(buffer, text, -1, 0, -1);
hb_buffer_guess_segment_properties(buffer); hb_buffer_guess_segment_properties(buffer);
hb_shape(font, buffer, NULL, 0); hb_shape(font, buffer, NULL, 0);
hb_buffer_destroy(buffer); hb_buffer_destroy(buffer);
}
uint32_t text32[16];
if (size > sizeof(text32)) {
memcpy(text32, data + size - sizeof(text32), sizeof(text32));
hb_buffer_t *buffer = hb_buffer_create();
hb_buffer_add_utf32(buffer, text32, sizeof(text32)/sizeof(text32[0]), 0, -1);
hb_buffer_guess_segment_properties(buffer);
hb_shape(font, buffer, NULL, 0);
hb_buffer_destroy(buffer);
}
hb_font_destroy(font); hb_font_destroy(font);
hb_face_destroy(face); hb_face_destroy(face);
hb_blob_destroy(blob); hb_blob_destroy(blob);