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fuzz_basic_parser.cpp
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98 lines (87 loc) · 2.83 KB
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//
// Copyright (c) 2019 Vinnie Falco ([email protected])
// Copyright (c) 2020 Paul Dreik ([email protected])
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// Official repository: https://github.com/cppalliance/json
//
// This file must be manually included when
// using basic_parser to implement a parser.
#include <boost/json/basic_parser.hpp>
#include <iomanip>
#include <iostream>
using namespace boost::json;
bool
validate( string_view s )
{
class null_parser
{
struct handler
{
bool on_document_begin( error_code& ) { return true; }
bool on_document_end( error_code& ) { return true; }
bool on_object_begin( error_code& ) { return true; }
bool on_object_end( std::size_t, error_code& ) { return true; }
bool on_array_begin( error_code& ) { return true; }
bool on_array_end( std::size_t, error_code& ) { return true; }
bool on_key_part( string_view, error_code& ) { return true; }
bool on_key( string_view, error_code& ) { return true; }
bool on_string_part( string_view, error_code& ) { return true; }
bool on_string( string_view, error_code& ) { return true; }
bool on_number_part( string_view, error_code& ) { return true; }
bool on_int64( std::int64_t, string_view, error_code& ) { return true; }
bool on_uint64( std::uint64_t, string_view, error_code& ) { return true; }
bool on_double( double, string_view, error_code& ) { return true; }
bool on_bool( bool, error_code& ) { return true; }
bool on_null( error_code& ) { return true; }
bool on_comment_part(string_view, error_code&) { return true; }
bool on_comment(string_view, error_code&) { return true; }
};
basic_parser<handler> p_;
public:
null_parser()
: p_(parse_options())
{
}
~null_parser()
{
}
std::size_t
write(
char const* data,
std::size_t size,
error_code& ec)
{
auto const n = p_.write( false, data, size, ec );
if(! ec && n < size)
ec = error::extra_data;
return n;
}
};
// Parse with the null parser and return false on error
null_parser p;
error_code ec;
p.write( s.data(), s.size(), ec );
if( ec )
return false;
// The string is valid JSON.
return true;
}
extern "C"
int
LLVMFuzzerTestOneInput(
const uint8_t* data, size_t size)
{
try
{
validate(string_view{
reinterpret_cast<const char*
>(data), size});
}
catch(...)
{
}
return 0;
}