107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
#include "hb-fuzzer.hh"
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
|
|
#include "hb-subset.h"
|
|
|
|
static void
|
|
trySubset (hb_face_t *face,
|
|
const hb_codepoint_t text[],
|
|
int text_length,
|
|
bool drop_hints,
|
|
bool drop_layout,
|
|
bool retain_gids)
|
|
{
|
|
hb_subset_input_t *input = hb_subset_input_create_or_fail ();
|
|
if (!input) return;
|
|
hb_subset_input_set_drop_hints (input, drop_hints);
|
|
hb_subset_input_set_retain_gids (input, retain_gids);
|
|
hb_set_t *codepoints = hb_subset_input_unicode_set (input);
|
|
|
|
if (!drop_layout)
|
|
{
|
|
hb_set_del (hb_subset_input_drop_tables_set (input), HB_TAG ('G', 'S', 'U', 'B'));
|
|
hb_set_del (hb_subset_input_drop_tables_set (input), HB_TAG ('G', 'P', 'O', 'S'));
|
|
hb_set_del (hb_subset_input_drop_tables_set (input), HB_TAG ('G', 'D', 'E', 'F'));
|
|
}
|
|
|
|
for (int i = 0; i < text_length; i++)
|
|
{
|
|
hb_set_add (codepoints, text[i]);
|
|
}
|
|
|
|
hb_face_t *result = hb_subset (face, input);
|
|
{
|
|
hb_blob_t *blob = hb_face_reference_blob (result);
|
|
unsigned int length;
|
|
const char *data = hb_blob_get_data (blob, &length);
|
|
|
|
// Something not optimizable just to access all the blob data
|
|
unsigned int bytes_count = 0;
|
|
for (unsigned int i = 0; i < length; ++i)
|
|
if (data[i]) ++bytes_count;
|
|
assert (bytes_count || !length);
|
|
|
|
hb_blob_destroy (blob);
|
|
}
|
|
hb_face_destroy (result);
|
|
|
|
hb_subset_input_destroy (input);
|
|
}
|
|
|
|
static void
|
|
trySubset (hb_face_t *face,
|
|
const hb_codepoint_t text[],
|
|
int text_length,
|
|
const uint8_t flags[1])
|
|
{
|
|
bool drop_hints = flags[0] & (1 << 0);
|
|
bool drop_layout = flags[0] & (1 << 1);
|
|
bool retain_gids = flags[0] & (1 << 2);
|
|
trySubset (face, text, text_length,
|
|
drop_hints, drop_layout, retain_gids);
|
|
}
|
|
|
|
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
|
|
{
|
|
hb_blob_t *blob = hb_blob_create ((const char *)data, size,
|
|
HB_MEMORY_MODE_READONLY, nullptr, nullptr);
|
|
hb_face_t *face = hb_face_create (blob, 0);
|
|
|
|
/* Just test this API here quickly. */
|
|
hb_set_t *output = hb_set_create();
|
|
hb_face_collect_unicodes (face, output);
|
|
hb_set_destroy (output);
|
|
|
|
uint8_t flags[1] = {0};
|
|
const hb_codepoint_t text[] =
|
|
{
|
|
'A', 'B', 'C', 'D', 'E', 'X', 'Y', 'Z', '1', '2',
|
|
'3', '@', '_', '%', '&', ')', '*', '$', '!'
|
|
};
|
|
|
|
trySubset (face, text, sizeof (text) / sizeof (hb_codepoint_t), flags);
|
|
|
|
hb_codepoint_t text_from_data[16];
|
|
if (size > sizeof(text_from_data) + sizeof(flags)) {
|
|
memcpy (text_from_data,
|
|
data + size - sizeof(text_from_data),
|
|
sizeof(text_from_data));
|
|
|
|
memcpy (flags,
|
|
data + size - sizeof(text_from_data) - sizeof(flags),
|
|
sizeof(flags));
|
|
unsigned int text_size = sizeof (text_from_data) / sizeof (hb_codepoint_t);
|
|
|
|
trySubset (face, text_from_data, text_size, flags);
|
|
}
|
|
|
|
hb_face_destroy (face);
|
|
hb_blob_destroy (blob);
|
|
|
|
return 0;
|
|
}
|