#include "conexion_ssl.h"
#include <openssl/crypto.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/err.h>

#define CHK_NULL(x) if ((x)==NULL) exit (1)
#define CHK_ERR(err,s) if ((err)==-1) { perror(s); exit(1); }
#define CHK_SSL(err) if ((err)==-1) { ERR_print_errors_fp(stderr); exit(2); }

conexion_ssl::conexion_ssl(config_reader &conf) : conexion(conf)
{
  int err;
  SSL_CTX* ctx;
  const SSL_METHOD *meth;

  OpenSSL_add_ssl_algorithms();
  meth = TLS_client_method();
  SSL_load_error_strings();
  ctx = SSL_CTX_new (meth);
  CHK_NULL(ctx);

  this->ssl=SSL_new(ctx);
  SSL_set_fd(this->ssl,this->fd);
  err = SSL_connect (ssl);
  CHK_SSL(err)
}

ssize_t conexion_ssl::read_string(std::string &entrada, int size){
  char* buffer = new char[size+1];
  ssize_t ret = SSL_read (this->ssl, buffer, size);
  buffer[ret]='\0';
  entrada = std::string(buffer);
  return ret;
}

ssize_t conexion_ssl::write_string(std::string entrada){
  return SSL_write(this->ssl,entrada.data(),sizeof (entrada.data()));
}