1 // Copyright 2020 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include <cairo.h>
16 #include <cairo-pdf.h>
17 #include "fuzzer_temp_file.h"
18
19 const double width_in_inches = 3;
20 const double height_in_inches = 3;
21 const double width_in_points = width_in_inches * 72.0;
22 const double height_in_points = height_in_inches * 72.0;
23
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)24 int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
25 cairo_t *cr;
26 cairo_surface_t *surface;
27 cairo_status_t status;
28
29 if (size == 0) {
30 return 0;
31 }
32
33 char *tmpfile = fuzzer_get_tmpfile(data, size);
34 surface = cairo_pdf_surface_create(tmpfile, width_in_points, height_in_points);
35 status = cairo_surface_status(surface);
36 if (status != CAIRO_STATUS_SUCCESS) {
37 fuzzer_release_tmpfile(tmpfile);
38 return 0;
39 }
40
41 char *buf = (char *) calloc(size + 1, sizeof(char));
42 memcpy(buf, data, size);
43 buf[size] = '\0';
44
45 cairo_pdf_surface_set_metadata(surface, CAIRO_PDF_METADATA_TITLE, buf);
46 cr = cairo_create(surface);
47 cairo_tag_begin(cr, buf, NULL);
48 cairo_tag_end(cr, buf);
49
50 cairo_destroy(cr);
51 cairo_surface_destroy(surface);
52 free(buf);
53 fuzzer_release_tmpfile(tmpfile);
54 return 0;
55 }
56