/*

 OLSR MDNS plugin.

 Written by Saverio Proto <zioproto@gmail.com> and Claudio Pisa <clauz@ninux.org>.

     This file is part of OLSR MDNS PLUGIN.

     The OLSR MDNS PLUGIN 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.

     The OLSR MDNS PLUGIN 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 Foobar.  If not, see <http://www.gnu.org/licenses/>.

  */

 #ifndef _BMF_NETWORKINTERFACES_H

 #define _BMF_NETWORKINTERFACES_H

 /* System includes */

 #include <netinet/in.h> /* struct in_addr */

 /* OLSR includes */

 #include "olsr_types.h" /* olsr_ip_addr */

 #include "plugin.h" /* union set_plugin_parameter_addon */

 /* Plugin includes */

 #include "Packet.h" /* IFHWADDRLEN */

 #include "mdns.h"

 /* Size of buffer in which packets are received */

 #define BMF_BUFFER_SIZE 2048

 struct TBmfInterface

 {

   /* File descriptor of raw packet socket, used for capturing multicast packets */

   int capturingSkfd;

   /* File descriptor of UDP (datagram) socket for encapsulated multicast packets.

    * Only used for OLSR-enabled interfaces; set to -1 if interface is not OLSR-enabled. */

   int encapsulatingSkfd;

   /* File descriptor of UDP packet socket, used for listening to encapsulation packets.

    * Used only when PlParam "BmfMechanism" is set to "UnicastPromiscuous". */

   int listeningSkfd;

   unsigned char macAddr[IFHWADDRLEN];

   char ifName[IFNAMSIZ];

   /* OLSRs idea of this network interface. NULL if this interface is not

    * OLSR-enabled. */

   struct interface* olsrIntf;

   /* IP address of this network interface */

   union olsr_ip_addr intAddr;

   /* Broadcast address of this network interface */

   union olsr_ip_addr broadAddr;

   #define FRAGMENT_HISTORY_SIZE 10

   struct TFragmentHistory

   {

     u_int16_t ipId;

     u_int8_t ipProto;

     struct in_addr ipSrc;

     struct in_addr ipDst;

   } fragmentHistory [FRAGMENT_HISTORY_SIZE];

   int nextFragmentHistoryEntry;

   /* Number of received and transmitted BMF packets on this interface */

   u_int32_t nBmfPacketsRx;

   u_int32_t nBmfPacketsRxDup;

   u_int32_t nBmfPacketsTx;

   /* Next element in list */

   struct TBmfInterface* next;

 };

 extern struct TBmfInterface* BmfInterfaces;

 extern int HighestSkfd;

 extern fd_set InputSet;

 extern int EtherTunTapFd;

 extern char EtherTunTapIfName[];

 /* 10.255.255.253 in host byte order */

 #define ETHERTUNTAPDEFAULTIP 0x0AFFFFFD

 extern u_int32_t EtherTunTapIp;

 extern u_int32_t EtherTunTapIpMask;

 extern u_int32_t EtherTunTapIpBroadcast;

 enum TBmfMechanism { BM_BROADCAST = 0, BM_UNICAST_PROMISCUOUS };

 extern enum TBmfMechanism BmfMechanism;

 int SetBmfInterfaceName(const char* ifname, void* data, set_plugin_parameter_addon addon);

 int SetBmfInterfaceIp(const char* ip, void* data, set_plugin_parameter_addon addon);

 int SetCapturePacketsOnOlsrInterfaces(const char* enable, void* data, set_plugin_parameter_addon addon);

 int SetBmfMechanism(const char* mechanism, void* data, set_plugin_parameter_addon addon);

 int DeactivateSpoofFilter(void);

 void RestoreSpoofFilter(void);

 #define MAX_UNICAST_NEIGHBORS 10

 struct TBestNeighbors

 {

   struct link_entry* links[MAX_UNICAST_NEIGHBORS];

 };

 void FindNeighbors(

   struct TBestNeighbors* neighbors,

   struct link_entry** bestNeighbor,

   struct TBmfInterface* intf,

   union olsr_ip_addr* source,

   union olsr_ip_addr* forwardedBy,

   union olsr_ip_addr* forwardedTo,

   int* nPossibleNeighbors);

 int CreateBmfNetworkInterfaces(struct interface* skipThisIntf);

 void AddInterface(struct interface* newIntf);

 void CloseBmfNetworkInterfaces(void);

 int AddNonOlsrBmfIf(const char* ifName, void* data, set_plugin_parameter_addon addon);

 int IsNonOlsrBmfIf(const char* ifName);

 void CheckAndUpdateLocalBroadcast(unsigned char* ipPacket, union olsr_ip_addr* broadAddr);

 void AddMulticastRoute(void);

 void DeleteMulticastRoute(void);

 #endif /* _BMF_NETWORKINTERFACES_H */

 /*

  * Local Variables:

  * c-basic-offset: 2

  * indent-tabs-mode: nil

  * End:

  */