/src/fuzz/raster_fuzzer.c
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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 | | static cairo_surface_t * |
20 | | acquire (cairo_pattern_t *pattern, void *closure, |
21 | | cairo_surface_t *target, |
22 | | const cairo_rectangle_int_t *extents) |
23 | 0 | { |
24 | 0 | return cairo_image_surface_create_from_png(closure); |
25 | 0 | } |
26 | | |
27 | | static void |
28 | | release (cairo_pattern_t *pattern, void *closure, cairo_surface_t *surface) |
29 | 0 | { |
30 | 0 | cairo_surface_destroy(surface); |
31 | 0 | } |
32 | | |
33 | 4.74k | int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { |
34 | 4.74k | cairo_t *cr; |
35 | 4.74k | cairo_surface_t *surface; |
36 | 4.74k | cairo_pattern_t *pattern; |
37 | 4.74k | cairo_content_t content; |
38 | 4.74k | cairo_status_t status; |
39 | 4.74k | int w, h; |
40 | | |
41 | 4.74k | char *tmpfile = fuzzer_get_tmpfile(data, size); |
42 | 4.74k | surface = cairo_image_surface_create_from_png(tmpfile); |
43 | 4.74k | status = cairo_surface_status (surface); |
44 | 4.74k | if (status != CAIRO_STATUS_SUCCESS) { |
45 | 4.67k | fuzzer_release_tmpfile(tmpfile); |
46 | 4.67k | return 0; |
47 | 4.67k | } |
48 | | |
49 | 69 | cr = cairo_create(surface); |
50 | 69 | content = cairo_surface_get_content(surface); |
51 | 69 | w = cairo_image_surface_get_width(surface); |
52 | 69 | h = cairo_image_surface_get_height(surface); |
53 | | |
54 | 69 | char *buf = (char *) calloc(size + 1, sizeof(char)); |
55 | 69 | memcpy(buf, data, size); |
56 | 69 | buf[size] = '\0'; |
57 | | |
58 | 69 | pattern = cairo_pattern_create_raster_source(buf, content, w, h); |
59 | 69 | cairo_raster_source_pattern_set_acquire (pattern, acquire, release); |
60 | 69 | cairo_set_source(cr, pattern); |
61 | 69 | cairo_pdf_surface_set_page_label(surface, buf); |
62 | 69 | cairo_pdf_surface_set_metadata(surface, CAIRO_PDF_METADATA_KEYWORDS, buf); |
63 | 69 | cairo_paint(cr); |
64 | | |
65 | 69 | cairo_destroy(cr); |
66 | 69 | cairo_pattern_destroy(pattern); |
67 | 69 | cairo_surface_destroy(surface); |
68 | 69 | free(buf); |
69 | 69 | fuzzer_release_tmpfile(tmpfile); |
70 | 69 | return 0; |
71 | 4.74k | } |