ec1c620316
This should make reproducing certain fuzzes easier between oss-fuzz and a typical dev's desktop. This was the most straight-forward way I could think of to accomplish this. An ideal solution would "compile" a set of fonts that was not the test set and embed it, but I lack the domain knowledge to craft such a set. If this method works ok, we can explore making the font set more robust and varied. Bug: 818769 Change-Id: I03eb2bc316caf7aec3ffa88e59ff29d76c8557ec Reviewed-on: https://skia-review.googlesource.com/c/177800 Commit-Queue: Kevin Lubick <kjlubick@google.com> Reviewed-by: Ben Wagner <bungeman@google.com>
38 lines
969 B
C++
38 lines
969 B
C++
/*
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* Copyright 2018 Google, LLC
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkCanvas.h"
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#include "SkFontMgrPriv.h"
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#include "SkPaint.h"
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#include "SkReadBuffer.h"
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#include "SkSurface.h"
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#include "SkTestFontMgr.h"
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#include "SkTextBlobPriv.h"
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void FuzzTextBlobDeserialize(SkReadBuffer& buf) {
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auto tb = SkTextBlobPriv::MakeFromBuffer(buf);
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if (!buf.isValid()) {
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return;
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}
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auto s = SkSurface::MakeRasterN32Premul(128, 128);
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if (!s) {
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// May return nullptr in memory-constrained fuzzing environments
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return;
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}
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s->getCanvas()->drawTextBlob(tb, 200, 200, SkPaint());
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}
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#if defined(IS_FUZZING_WITH_LIBFUZZER)
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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gSkFontMgr_DefaultFactory = &sk_tool_utils::MakePortableFontMgr;
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SkReadBuffer buf(data, size);
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FuzzTextBlobDeserialize(buf);
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return 0;
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}
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#endif
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