libxml2_xml_read_memory_fuzzer.cc [plain text]
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <functional>
#include <limits>
#include <string>
#include "libxml/parser.h"
#include "libxml/xmlsave.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
static void ignore (void* ctx, const char* msg, ...) {
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
xmlSetGenericErrorFunc(NULL, &ignore);
std::string data_string(reinterpret_cast<const char*>(data), size);
const std::size_t data_hash = std::hash<std::string>()(data_string);
const int max_option_value = std::numeric_limits<int>::max();
const int random_option_value = data_hash % max_option_value;
const int options[] = {0, random_option_value};
for (const auto option_value : options) {
size_t data_string_length = data_string.length();
assert(data_string_length < std::numeric_limits<int>::max());
if (auto doc = xmlReadMemory(data_string.c_str(), static_cast<int>(data_string_length),
"noname.xml", NULL, option_value | XML_PARSE_NONET)) {
auto buf = xmlBufferCreate();
assert(buf);
auto ctxt = xmlSaveToBuffer(buf, NULL, 0);
xmlSaveDoc(ctxt, doc);
xmlSaveClose(ctxt);
xmlFreeDoc(doc);
xmlBufferFree(buf);
}
}
return 0;
}