// Copyright 2020 Google LLC

//

// 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 "postgres.h"

#include "common/jsonapi.h"

#include "mb/pg_wchar.h"

#include "utils/memutils.h"

#include "utils/memdebug.h"

int LLVMFuzzerInitialize(int *argc, char ***argv) {

  //FuzzerInitialize("json_db", argv);

  return 0;

}

/*

** Main entry point.  The fuzzer invokes this function with each

** fuzzed input.

*/

int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {

  sigjmp_buf local_sigjmp_buf;

  char *buffer;

  JsonSemAction sem;

  JsonLexContext *lex;

  buffer = (char *) calloc(size+1, sizeof(char));

  memcpy(buffer, data, size);

  MemoryContextInit();

  set_stack_base();

  sem = nullSemAction;

  lex = makeJsonLexContextCstringLen(NULL, buffer, size+1, PG_UTF8, true);

  if(!sigsetjmp(local_sigjmp_buf,0)){

    error_context_stack = NULL;

    PG_exception_stack = &local_sigjmp_buf;

    pg_parse_json(lex, &sem);

  }

  free(buffer);

  FlushErrorState();

  MemoryContextReset(TopMemoryContext);

  TopMemoryContext->ident = NULL;

  TopMemoryContext->methods->delete_context(TopMemoryContext);

  VALGRIND_DESTROY_MEMPOOL(TopMemoryContext);

  return 0;

}