mirror of https://github.com/google/oss-fuzz.git
59 lines
2.2 KiB
C++
59 lines
2.2 KiB
C++
/* Copyright 2021 Google LLC
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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// From https://svn.boost.org/trac10/ticket/12818
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// This fuzz target can likely be enhanced to exercise more code.
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// The ideal place for this fuzz target is the boost repository.
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#ifdef DEBUG
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#include <iostream>
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#endif
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#include <boost/regex.hpp>
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#include <fuzzer/FuzzedDataProvider.h>
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namespace {
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void assertPostConditions(boost::match_results<std::string::const_iterator> const& match, boost::regex const& e)
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{
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// See https://www.boost.org/doc/libs/1_71_0/libs/regex/doc/html/boost_regex/ref/regex_match.html
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assert(match.size() == e.mark_count() + 1);
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assert(!match.empty());
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assert(!match.prefix().matched);
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assert(!match.suffix().matched);
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}
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}
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
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FuzzedDataProvider fuzzed_data(Data, Size);
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// First value is length of the regex string
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size_t regex_length = fuzzed_data.ConsumeIntegral<uint8_t>();
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// Second value is regexp string whose length is `regex_length`
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std::string regex_string = fuzzed_data.ConsumeBytesAsString(regex_length);
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try {
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boost::regex e(regex_string);
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// Last value is the text to be matched
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std::string text = fuzzed_data.ConsumeRemainingBytesAsString();
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#ifdef DEBUG
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std::cout << "Regexp string: " << regex_string << "Size: " << regex_string.size() << std::endl;
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std::cout << "Text: " << text << "Size: " << text.size() << std::endl;
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#endif
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boost::match_results<std::string::const_iterator> what;
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bool match = boost::regex_match(text, what, e,
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boost::match_default | boost::match_partial);
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if (match)
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assertPostConditions(what, e);
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}
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catch (const std::runtime_error &) {
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}
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return 0;
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}
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