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60 lines
1.8 KiB
60 lines
1.8 KiB
4 months ago
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// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <cairo.h>
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#include "fuzzer_temp_file.h"
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const int glyph_range = 9;
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int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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if (size < glyph_range) {
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return 0;
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}
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cairo_t *cr;
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cairo_surface_t *surface;
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cairo_status_t status;
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cairo_text_extents_t extents;
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cairo_text_cluster_t cluster;
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char *tmpfile = fuzzer_get_tmpfile(data, size);
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surface = cairo_image_surface_create_from_png(tmpfile);
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status = cairo_surface_status(surface);
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if (status != CAIRO_STATUS_SUCCESS) {
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fuzzer_release_tmpfile(tmpfile);
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return 0;
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}
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char *buf = (char *) calloc(size + 1, sizeof(char));
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memcpy(buf, data, size);
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buf[size] = '\0';
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cr = cairo_create(surface);
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cairo_text_extents(cr, buf, &extents);
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cluster.num_bytes = size;
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cluster.num_glyphs = 1;
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for (int i = 0; i < glyph_range; i++) {
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// Taken from test/text-glyph-range.c
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cairo_glyph_t glyph = {
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(long int)data[i], 10 * i, 25
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};
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cairo_show_text_glyphs(cr, buf, size, &glyph, 1, &cluster, 1, 0);
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}
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cairo_destroy(cr);
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cairo_surface_destroy(surface);
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free(buf);
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fuzzer_release_tmpfile(tmpfile);
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return 0;
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}
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