1 /*
2 * Copyright 2018 Google, LLC
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "include/core/SkCanvas.h"
9 #include "include/core/SkPaint.h"
10 #include "include/core/SkSurface.h"
11 #include "src/core/SkReadBuffer.h"
12 #include "src/core/SkTextBlobPriv.h"
13 #include "tools/fonts/FontToolUtils.h"
14
FuzzTextBlobDeserialize(const uint8_t * data,size_t size)15 void FuzzTextBlobDeserialize(const uint8_t *data, size_t size) {
16 SkReadBuffer buf(data, size);
17 auto tb = SkTextBlobPriv::MakeFromBuffer(buf);
18 if (!buf.isValid()) {
19 return;
20 }
21
22 auto s = SkSurfaces::Raster(SkImageInfo::MakeN32Premul(128, 128));
23 if (!s) {
24 // May return nullptr in memory-constrained fuzzing environments
25 return;
26 }
27 s->getCanvas()->drawTextBlob(tb, 200, 200, SkPaint());
28 }
29
30 #if defined(SK_BUILD_FOR_LIBFUZZER)
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)31 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
32 if (size > 1024) {
33 return 0;
34 }
35 ToolUtils::UsePortableFontMgr();
36 FuzzTextBlobDeserialize(data, size);
37 return 0;
38 }
39 #endif
40