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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40284755): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif
#include "base/strings/string_tokenizer.h"
#include <stddef.h>
#include <stdint.h>
#include <string>
#include <tuple>
void GetAllTokens(base::StringTokenizer& t) {
while (t.GetNext()) {
std::ignore = t.token();
}
}
// Entry point for LibFuzzer.
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
uint8_t size_t_bytes = sizeof(size_t);
if (size < size_t_bytes + 1) {
return 0;
}
// Calculate pattern size based on remaining bytes, otherwise fuzzing is
// inefficient with bailouts in most cases.
size_t pattern_size =
*reinterpret_cast<const size_t*>(data) % (size - size_t_bytes);
std::string pattern(reinterpret_cast<const char*>(data + size_t_bytes),
pattern_size);
std::string input(
reinterpret_cast<const char*>(data + size_t_bytes + pattern_size),
size - pattern_size - size_t_bytes);
// Allow quote_chars and options to be set. Otherwise full coverage
// won't be possible since IsQuote, FullGetNext and other functions
// won't be called.
for (bool return_delims : {false, true}) {
for (bool return_empty_strings : {false, true}) {
int options = 0;
if (return_delims) {
options |= base::StringTokenizer::RETURN_DELIMS;
}
if (return_empty_strings) {
options |= base::StringTokenizer::RETURN_EMPTY_TOKENS;
}
base::StringTokenizer t(input, pattern);
t.set_options(options);
GetAllTokens(t);
base::StringTokenizer t_quote(input, pattern);
t_quote.set_quote_chars("\"");
t_quote.set_options(options);
GetAllTokens(t_quote);
}
}
return 0;
}
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