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// Copyright (c) 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <stdint.h>
#include <string>
#include "re2/re2.h"
#include "util/logging.h"
using std::string;
void Test(const string& buffer, const string& pattern,
const RE2::Options& options) {
RE2 re(pattern, options);
if (!re.ok())
return;
string m1, m2;
int i1, i2;
double d1;
if (re.NumberOfCapturingGroups() == 0) {
RE2::FullMatch(buffer, re);
RE2::PartialMatch(buffer, re);
} else if (re.NumberOfCapturingGroups() == 1) {
RE2::FullMatch(buffer, re, &m1);
RE2::PartialMatch(buffer, re, &i1);
} else if (re.NumberOfCapturingGroups() == 2) {
RE2::FullMatch(buffer, re, &i1, &i2);
RE2::PartialMatch(buffer, re, &m1, &m2);
}
re2::StringPiece input(buffer);
RE2::Consume(&input, re, &m1);
RE2::FindAndConsume(&input, re, &d1);
string tmp1(buffer);
RE2::Replace(&tmp1, re, "zz");
string tmp2(buffer);
RE2::GlobalReplace(&tmp2, re, "xx");
RE2::QuoteMeta(re2::StringPiece(pattern));
}
// Entry point for LibFuzzer.
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
if (size < 1)
return 0;
re2::FLAGS_minloglevel = 3;
RE2::Options options;
size_t options_randomizer = 0;
for (size_t i = 0; i < size; i++)
options_randomizer += data[i];
if (options_randomizer & 1)
options.set_encoding(RE2::Options::EncodingLatin1);
options.set_posix_syntax(options_randomizer & 2);
options.set_longest_match(options_randomizer & 4);
options.set_literal(options_randomizer & 8);
options.set_never_nl(options_randomizer & 16);
options.set_dot_nl(options_randomizer & 32);
options.set_never_capture(options_randomizer & 64);
options.set_case_sensitive(options_randomizer & 128);
options.set_perl_classes(options_randomizer & 256);
options.set_word_boundary(options_randomizer & 512);
options.set_one_line(options_randomizer & 1024);
options.set_log_errors(false);
const char* data_input = reinterpret_cast<const char*>(data);
{
string pattern(data_input, size);
string buffer(data_input, size);
Test(buffer, pattern, options);
}
if (size >= 3) {
string pattern(data_input, size / 3);
string buffer(data_input + size / 3, size - size / 3);
Test(buffer, pattern, options);
}
return 0;
}
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