/*

 *

 * (C) 2015-24 - 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 _HOST_POOLS_H_

#define _HOST_POOLS_H_

#include "ntop_includes.h"

class NetworkInterface;

class Host;

class Mac;

class HostPools {

 private:

  VLANAddressTree *tree, *tree_shadow;

  NetworkInterface *iface;

  u_int16_t max_num_pools;

  int32_t *num_active_hosts_inline, *num_active_hosts_offline;

  int32_t *num_active_l2_devices_inline, *num_active_l2_devices_offline;

  HostPoolStats **stats, **stats_shadow;

#ifdef NTOPNG_PRO

  bool *children_safe;

  bool *forge_global_dns;

  u_int8_t *routing_policy_id;

  u_int16_t *pool_shaper;

  u_int32_t *schedule_bitmap;

  bool *enforce_quotas_per_pool_member; /* quotas can be pool-wide or per pool

                                           member */

  bool *enforce_shapers_per_pool_member;

#endif

  inline HostPoolStats *getPoolStats(u_int16_t host_pool_id) {

    if ((host_pool_id >= max_num_pools) || (!stats)) return NULL;

    return stats[host_pool_id];

  }

  void reloadPoolStats();

  static void deleteStats(HostPoolStats ***hps);

  void swap(VLANAddressTree *new_trees, HostPoolStats **new_stats);

  inline void incNumMembers(u_int16_t pool_id, int32_t *ctr) const {

    if (ctr && pool_id < max_num_pools) ctr[pool_id]++;

  };

  inline void decNumMembers(u_int16_t pool_id, int32_t *ctr) const {

    if (ctr && pool_id < max_num_pools) ctr[pool_id]--;

  };

 public:

  HostPools(NetworkInterface *_iface);

  virtual ~HostPools();

  void reloadPools();

  void reloadPool(u_int16_t _pool_id, VLANAddressTree *new_tree, HostPoolStats **new_stats);

  u_int16_t getPool(Host *h);

  u_int16_t getPool(Mac *m);

  u_int16_t getPoolByName(const char *pool_name);

  bool findIpPool(IpAddress *ip, u_int16_t vlan_id, u_int16_t *found_pool,

                  ndpi_patricia_node_t **found_node);

  bool findMacPool(const u_int8_t *const mac, u_int16_t *found_pool);

  bool findMacPool(Mac *mac, u_int16_t *found_pool);

  void lua(lua_State *vm);

  inline int32_t getNumPoolHosts(u_int16_t pool_id) {

    if (pool_id >= max_num_pools) return NO_HOST_POOL_ID;

    return num_active_hosts_inline[pool_id] + num_active_hosts_offline[pool_id];

  }

  inline int32_t getNumPoolL2Devices(u_int16_t pool_id) {

    if (pool_id >= max_num_pools) return NO_HOST_POOL_ID;

    return num_active_l2_devices_inline[pool_id] +

           num_active_l2_devices_offline[pool_id];

  }

  inline void incNumHosts(u_int16_t pool_id, bool isInlineCall) {

    incNumMembers(pool_id, isInlineCall ? num_active_hosts_inline

                                        : num_active_hosts_offline);

  };

  inline void decNumHosts(u_int16_t pool_id, bool isInlineCall) {

    decNumMembers(pool_id, isInlineCall ? num_active_hosts_inline

                                        : num_active_hosts_offline);

  };

  inline void incNumL2Devices(u_int16_t pool_id, bool isInlineCall) {

    incNumMembers(pool_id, isInlineCall ? num_active_l2_devices_inline

                                        : num_active_l2_devices_offline);

  };

  inline void decNumL2Devices(u_int16_t pool_id, bool isInlineCall) {

    decNumMembers(pool_id, isInlineCall ? num_active_l2_devices_inline

                                        : num_active_l2_devices_offline);

  };

  void incPoolNumDroppedFlows(u_int16_t pool_id);

  void incPoolStats(u_int32_t when, u_int16_t host_pool_id,

                    u_int16_t ndpi_proto, ndpi_protocol_category_t category_id,

                    u_int64_t sent_packets, u_int64_t sent_bytes,

                    u_int64_t rcvd_packets, u_int64_t rcvd_bytes);

  void updateStats(const struct timeval *tv);

  void luaStats(lua_State *vm);

  void luaStats(lua_State *mv, u_int16_t pool_id);

  /* To be called on the same thread as incPoolStats */

  void checkPoolsStatsReset();

  inline bool getProtoStats(u_int16_t host_pool_id, u_int16_t ndpi_proto,

                            u_int64_t *bytes, u_int32_t *duration) {

    HostPoolStats *hps;

    if (!(hps = getPoolStats(host_pool_id))) return false;

    hps->getProtoStats(ndpi_proto, bytes, duration);

    return true;

  }

  inline bool getCategoryStats(u_int16_t host_pool_id,

                               ndpi_protocol_category_t category_id,

                               u_int64_t *bytes, u_int32_t *duration) {

    HostPoolStats *hps;

    if (!(hps = getPoolStats(host_pool_id))) return false;

    hps->getCategoryStats(category_id, bytes, duration);

    return true;

  }

  inline bool getStats(u_int16_t host_pool_id, u_int64_t *bytes,

                       u_int32_t *duration) {

    HostPoolStats *hps;

    if (!(hps = getPoolStats(host_pool_id))) return false;

    hps->getStats(bytes, duration);

    return true;

  }

  void resetPoolsStats(u_int16_t pool_filter);

#ifdef NTOPNG_PRO

  inline bool enforceQuotasPerPoolMember(u_int16_t pool_id) {

    return (((pool_id != NO_HOST_POOL_ID) && (pool_id < max_num_pools))

                ? enforce_quotas_per_pool_member[pool_id]

                : false);

  }

  inline bool enforceShapersPerPoolMember(u_int16_t pool_id) {

    return (((pool_id != NO_HOST_POOL_ID) && (pool_id < max_num_pools))

                ? enforce_shapers_per_pool_member[pool_id]

                : false);

  }

  inline u_int16_t getPoolShaper(u_int16_t pool_id) {

    return ((pool_id < max_num_pools) ? pool_shaper[pool_id]

                                      : DEFAULT_SHAPER_ID);

  }

  inline u_int32_t getPoolSchedule(u_int16_t pool_id) {

    return (((pool_id != NO_HOST_POOL_ID) && (pool_id < max_num_pools))

                ? schedule_bitmap[pool_id]

                : DEFAULT_TIME_SCHEDULE);

  }

  inline bool isChildrenSafePool(u_int16_t pool_id) {

    return ((pool_id < max_num_pools) ? children_safe[pool_id] : false);

  }

  inline bool forgeGlobalDns(u_int16_t pool_id) {

    return ((pool_id < max_num_pools) ? forge_global_dns[pool_id] : false);

  }

  inline u_int8_t getRoutingPolicy(u_int16_t pool_id) {

    return (((pool_id != NO_HOST_POOL_ID) && (pool_id < max_num_pools))

                ? routing_policy_id[pool_id]

                : DEFAULT_ROUTING_TABLE_ID);

  }

#endif

};

#endif /* _HOST_POOLS_H_ */