update harfbuzz to 10.1.0

2026-08-21 13:10:24 +02:00 · 2024-11-08 20:45:28 -04:00
parent 7ca40027e0
commit aecb572558
3449 changed files with 101770 additions and 22266 deletions
@@ -0,0 +1,174 @@
+#include <assert.h>
+#include <stdlib.h>
+
+#include <hb-ot.h>
+
+#include "hb-fuzzer.hh"
+
+struct _draw_data_t
+{
+  unsigned path_len;
+  float path_start_x;
+  float path_start_y;
+  float path_last_x;
+  float path_last_y;
+};
+
+#include <cstdio>
+static void
+_move_to (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data_,
+	  hb_draw_state_t *st,
+	  float to_x, float to_y,
+	  void *user_data HB_UNUSED)
+{
+  _draw_data_t *draw_data = (_draw_data_t *) draw_data_;
+  assert (!st->path_open);
+  draw_data->path_start_x = draw_data->path_last_x = to_x;
+  draw_data->path_start_y = draw_data->path_last_y = to_y;
+}
+
+static void
+_line_to (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data_,
+	  hb_draw_state_t *st,
+	  float to_x, float to_y,
+	  void *user_data HB_UNUSED)
+{
+  _draw_data_t *draw_data = (_draw_data_t *) draw_data_;
+  assert (st->path_open);
+  ++draw_data->path_len;
+  draw_data->path_last_x = to_x;
+  draw_data->path_last_y = to_y;
+}
+
+static void
+_quadratic_to (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data_,
+	       hb_draw_state_t *st,
+	       float control_x HB_UNUSED, float control_y HB_UNUSED,
+	       float to_x, float to_y,
+	       void *user_data HB_UNUSED)
+{
+  _draw_data_t *draw_data = (_draw_data_t *) draw_data_;
+  assert (st->path_open);
+  ++draw_data->path_len;
+  draw_data->path_last_x = to_x;
+  draw_data->path_last_y = to_y;
+}
+
+static void
+_cubic_to (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data_,
+	   hb_draw_state_t *st,
+	   float control1_x HB_UNUSED, float control1_y HB_UNUSED,
+	   float control2_x HB_UNUSED, float control2_y HB_UNUSED,
+	   float to_x, float to_y,
+	   void *user_data HB_UNUSED)
+{
+  _draw_data_t *draw_data = (_draw_data_t *) draw_data_;
+  assert (st->path_open);
+  ++draw_data->path_len;
+  draw_data->path_last_x = to_x;
+  draw_data->path_last_y = to_y;
+}
+
+static void
+_close_path (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data_,
+	     hb_draw_state_t *st,
+	     void *user_data HB_UNUSED)
+{
+  _draw_data_t *draw_data = (_draw_data_t *) draw_data_;
+  assert (st->path_open && draw_data->path_len != 0);
+  draw_data->path_len = 0;
+  assert (draw_data->path_start_x == draw_data->path_last_x &&
+	  draw_data->path_start_y == draw_data->path_last_y);
+}
+
+/* Similar to test-ot-face.c's #test_font() */
+static void misc_calls_for_gid (hb_face_t *face, hb_font_t *font, hb_set_t *set, hb_codepoint_t cp)
+{
+  /* Other gid specific misc calls */
+  hb_face_collect_variation_unicodes (face, cp, set);
+
+  hb_codepoint_t g;
+  hb_font_get_nominal_glyph (font, cp, &g);
+  hb_font_get_variation_glyph (font, cp, cp, &g);
+  hb_font_get_glyph_h_advance (font, cp);
+  hb_font_get_glyph_v_advance (font, cp);
+  hb_position_t x, y;
+  hb_font_get_glyph_h_origin (font, cp, &x, &y);
+  hb_font_get_glyph_v_origin (font, cp, &x, &y);
+  hb_font_get_glyph_contour_point (font, cp, 0, &x, &y);
+  char buf[64];
+  hb_font_get_glyph_name (font, cp, buf, sizeof (buf));
+
+  hb_ot_color_palette_get_name_id (face, cp);
+  hb_ot_color_palette_color_get_name_id (face, cp);
+  hb_ot_color_palette_get_flags (face, cp);
+  hb_ot_color_palette_get_colors (face, cp, 0, nullptr, nullptr);
+  hb_ot_color_glyph_get_layers (face, cp, 0, nullptr, nullptr);
+  hb_blob_destroy (hb_ot_color_glyph_reference_svg (face, cp));
+  hb_blob_destroy (hb_ot_color_glyph_reference_png (font, cp));
+
+  hb_ot_layout_get_ligature_carets (font, HB_DIRECTION_LTR, cp, 0, nullptr, nullptr);
+
+  hb_ot_math_get_glyph_italics_correction (font, cp);
+  hb_ot_math_get_glyph_top_accent_attachment (font, cp);
+  hb_ot_math_is_glyph_extended_shape (face, cp);
+  hb_ot_math_get_glyph_kerning (font, cp, HB_OT_MATH_KERN_BOTTOM_RIGHT, 0);
+  hb_ot_math_get_glyph_variants (font, cp, HB_DIRECTION_TTB, 0, nullptr, nullptr);
+  hb_ot_math_get_glyph_assembly (font, cp, HB_DIRECTION_BTT, 0, nullptr, nullptr, nullptr);
+}
+
+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);
+  hb_font_t *font = hb_font_create (face);
+
+  unsigned num_coords = 0;
+  if (size) num_coords = data[size - 1];
+  num_coords = hb_ot_var_get_axis_count (face) > num_coords ? num_coords : hb_ot_var_get_axis_count (face);
+  int *coords = (int *) calloc (num_coords, sizeof (int));
+  if (size > num_coords + 1)
+    for (unsigned i = 0; i < num_coords; ++i)
+      coords[i] = ((int) data[size - num_coords + i - 1] - 128) * 10;
+  hb_font_set_var_coords_normalized (font, coords, num_coords);
+  free (coords);
+
+  unsigned glyph_count = hb_face_get_glyph_count (face);
+  glyph_count = glyph_count > 16 ? 16 : glyph_count;
+
+  _draw_data_t draw_data = {0, 0, 0, 0, 0};
+
+  hb_draw_funcs_t *funcs = hb_draw_funcs_create ();
+  hb_draw_funcs_set_move_to_func (funcs, (hb_draw_move_to_func_t) _move_to, nullptr, nullptr);
+  hb_draw_funcs_set_line_to_func (funcs, (hb_draw_line_to_func_t) _line_to, nullptr, nullptr);
+  hb_draw_funcs_set_quadratic_to_func (funcs, (hb_draw_quadratic_to_func_t) _quadratic_to, nullptr, nullptr);
+  hb_draw_funcs_set_cubic_to_func (funcs, (hb_draw_cubic_to_func_t) _cubic_to, nullptr, nullptr);
+  hb_draw_funcs_set_close_path_func (funcs, (hb_draw_close_path_func_t) _close_path, nullptr, nullptr);
+  volatile unsigned counter = !glyph_count;
+  hb_set_t *set = hb_set_create ();
+  for (unsigned gid = 0; gid < glyph_count; ++gid)
+  {
+    hb_font_draw_glyph (font, gid, funcs, &draw_data);
+
+    /* Glyph extents also may practices the similar path, call it now that is related */
+    hb_glyph_extents_t extents;
+    if (hb_font_get_glyph_extents (font, gid, &extents))
+      counter += !!extents.width + !!extents.height + !!extents.x_bearing + !!extents.y_bearing;
+
+    if (!counter) counter += 1;
+
+    /* other misc calls */
+    misc_calls_for_gid (face, font, set, gid);
+  }
+  hb_set_destroy (set);
+  assert (counter);
+  hb_draw_funcs_destroy (funcs);
+
+  hb_font_destroy (font);
+  hb_face_destroy (face);
+  hb_blob_destroy (blob);
+  return 0;
+}