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// Copyright 2017 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "expat.h" // NOLINT
#include "google/protobuf/stubs/logging.h"
#include "src/xml/libfuzzer_xml_mutator.h"
namespace {
google::protobuf::LogSilencer log_silincer;
std::vector<const char*> kEncodings = {{"UTF-16", "UTF-8", "ISO-8859-1",
"US-ASCII", "UTF-16BE", "UTF-16LE",
"INVALIDENCODING"}};
}
extern "C" size_t LLVMFuzzerCustomMutator(uint8_t* data, size_t size,
size_t max_size, unsigned int seed) {
// Experimental
#ifdef LIB_PROTO_MUTATOR_XML2_NO_FLATTENING
if (seed % 33 == 0) {
++seed;
}
#endif // LIB_PROTO_MUTATOR_XML2_NO_FLATTENING
return protobuf_mutator::xml::MutateTextMessage(data, size, max_size, seed);
}
// Entry point for LibFuzzer.
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
int options = 0;
std::string xml;
protobuf_mutator::xml::ParseTextMessage(data, size, &xml, &options);
int use_ns = options % 2;
options /= 2;
auto enc = kEncodings[options % kEncodings.size()];
XML_Parser parser =
use_ns ? XML_ParserCreateNS(enc, '\n') : XML_ParserCreate(enc);
XML_Parse(parser, xml.data(), xml.size(), true);
XML_ParserFree(parser);
return 0;
}
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