72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "common.h"
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#include <fuzzer/FuzzedDataProvider.h>
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#ifndef HASHTYPE
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#error Macro HASHTYPE must be defined.
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#endif
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#ifndef FNAME
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#error Macro FNAME must be defined.
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#endif
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#define CONCAT_TYPE(x) _PASTE2(HASHTYPE, x)
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#define init CONCAT_TYPE(_init)
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#define update CONCAT_TYPE(_update)
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#define digest CONCAT_TYPE(_digest)
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#define destroy CONCAT_TYPE(_destroy)
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#define STR(x) #x
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#define INCLUDE(x) STR(x)
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#include INCLUDE(FNAME)
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#ifndef DIGEST_SIZE
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#error Macro DIGEST_SIZE must be defined.
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#endif
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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if (!size)
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return 0;
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FuzzedDataProvider stream(data, size);
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hash_state *hs;
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if (init(&hs))
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return 0;
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while (stream.remaining_bytes()) {
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size_t num_bytes = stream.ConsumeIntegral<size_t>();
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std::vector<uint8_t> buffer = stream.ConsumeBytes<uint8_t>(num_bytes);
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if (update(hs, buffer.data(), buffer.size()))
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goto error;
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}
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uint8_t result[DIGEST_SIZE];
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#ifndef DIGEST_THIRD_PARAM
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digest(hs, result);
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#else
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digest(hs, result, DIGEST_SIZE);
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#endif
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error:
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destroy(hs);
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return 0;
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}
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