| #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, |
| unsigned flag_bits) |
| { |
| hb_subset_input_t *input = hb_subset_input_create_or_fail (); |
| if (!input) return; |
| |
| hb_subset_input_set_flags (input, (hb_subset_flags_t) flag_bits); |
| |
| hb_set_t *codepoints = hb_subset_input_unicode_set (input); |
| |
| for (int i = 0; i < text_length; i++) |
| hb_set_add (codepoints, text[i]); |
| |
| hb_face_t *result = hb_subset_or_fail (face, input); |
| if (result) |
| { |
| 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); |
| } |
| |
| extern "C" int LLVMFuzzerTestOneInput (const uint8_t *data, size_t size) |
| { |
| alloc_state = _fuzzing_alloc_state (data, 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); |
| |
| unsigned flags = HB_SUBSET_FLAGS_DEFAULT; |
| 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; |
| } |