/*

 *

 * (C) 2019-24 - ntop.org

 *

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software Foundation,

 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 *

 */

#ifndef _SYSLOG_COLLECTOR_INTERFACE_H_

#define _SYSLOG_COLLECTOR_INTERFACE_H_

#include "ntop_includes.h"

#ifndef HAVE_NEDGE

class LuaEngine;

typedef struct {

  int socket;

  struct sockaddr_in address;

  char ip_str[INET_ADDRSTRLEN];

} syslog_client;

typedef struct {

  bool enable;

  struct sockaddr_in addr;

  int sock;

} syslog_socket;

#define USE_RECVLINE

class SyslogCollectorInterface : public SyslogParserInterface {

 private:

  char *endpoint;

  syslog_socket udp_socket;

  syslog_socket tcp_socket;

  syslog_client tcp_connections[MAX_SYSLOG_SUBSCRIBERS];

  struct {

    u_int32_t num_flows;

  } recvStats;

  bool openSocket(syslog_socket *ss, const char *server_address,

                  int server_port, int protocol);

  void closeSocket(syslog_socket *ss, int protocol);

  int initFDSetsSocket(syslog_socket *ss, fd_set *read_fds, fd_set *write_fds,

                       fd_set *except_fds, int protocol);

  int initFDSets(fd_set *read_fds, fd_set *write_fds, fd_set *except_fds);

#ifdef USE_RECVLINE

  int recvLine(int socket, char *buffer, size_t n);

#endif

 public:

  SyslogCollectorInterface(const char *_endpoint);

  ~SyslogCollectorInterface();

  int handleNewConnection();

  void closeConnection(syslog_client *client);

  int receiveFromClient(syslog_client *client);

  int receive(int socket, char *client_ip, bool use_recvfrom);

  virtual const char *get_type() const {

    return (CONST_INTERFACE_TYPE_SYSLOG);

  };

  virtual InterfaceType getIfType() const { return (interface_type_SYSLOG); }

  inline char *getEndpoint(u_int8_t id) { return (endpoint); };

  virtual bool isPacketInterface() const { return (false); };

  void collect_events();

  void startPacketPolling();

  void shutdown();

  bool set_packet_filter(char *filter);

  virtual void lua(lua_State *vm, bool fullStats);

};

#endif /* HAVE_NEDGE */

#endif /* _SYSLOG_COLLECTOR_INTERFACE_H_ */