/*

 * Copyright 2018 Google Inc.

 *

 * Use of this source code is governed by a BSD-style license that can be

 * found in the LICENSE file.

 */

#include "include/core/SkCanvas.h"

#include "include/core/SkPaint.h"

#include "include/core/SkPath.h"

#include "include/core/SkSurface.h"

#include "src/core/SkReadBuffer.h"

void FuzzPathDeserialize(SkReadBuffer& buf) {

    SkPath path;

    buf.readPath(&path);

    if (!buf.isValid()) {

        return;

    }

    auto s = SkSurface::MakeRasterN32Premul(128, 128);

    if (!s) {

        // May return nullptr in memory-constrained fuzzing environments

        return;

    }

    s->getCanvas()->drawPath(path, SkPaint());

}

// TODO(kjlubick): remove IS_FUZZING... after https://crrev.com/c/2410304 lands

#if defined(SK_BUILD_FOR_LIBFUZZER) || defined(IS_FUZZING_WITH_LIBFUZZER)

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {

    if (size < 4 || size > 2000) {

        return 0;

    }

    uint32_t packed;

    memcpy(&packed, data, 4);

    unsigned version = packed & 0xFF;

    if (version != 4) {

        // Chrome only will produce version 4, so guide the fuzzer to

        // only focus on those branches.

        return 0;

    }

    SkReadBuffer buf(data, size);

    FuzzPathDeserialize(buf);

    return 0;

}

#endif