// Copyright 2007 - 2022, Alan Antonuk and the rabbitmq-c contributors.

// SPDX-License-Identifier: mit

#include <errno.h>

#include <inttypes.h>

#include <math.h>

#include <stdarg.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <rabbitmq-c/amqp.h>

#include <rabbitmq-c/framing.h>

// Drives amqp_decode_method(), the generated decoder for every AMQP method

// frame. The first 4 bytes are the method id (big-endian), the rest the body.

extern int LLVMFuzzerTestOneInput(const char *data, size_t size) {

  int unused_result;

  amqp_pool_t pool;

  amqp_method_number_t method_id;

  if (size < 4) {

    return 0;

  }

  method_id = ((amqp_method_number_t)(uint8_t)data[0] << 24) |

              ((amqp_method_number_t)(uint8_t)data[1] << 16) |

              ((amqp_method_number_t)(uint8_t)data[2] << 8) |

              ((amqp_method_number_t)(uint8_t)data[3]);

  init_amqp_pool(&pool, 4096);

  {

    void *decoded = NULL;

    amqp_bytes_t encoded;

    encoded.len = size - 4;

    encoded.bytes = (void *)(data + 4);

    unused_result = amqp_decode_method(method_id, &pool, encoded, &decoded);

  }

  empty_amqp_pool(&pool);

  return 0;

}