/**
* ( C ) 2007 - 20 - ntop . org and contributors
*
* 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 see see < http : //www.gnu.org/licenses/>
*
*/
/* N2N packet header indicators. */
# define MSG_TYPE_REGISTER 1
# define MSG_TYPE_DEREGISTER 2
# define MSG_TYPE_PACKET 3
# define MSG_TYPE_REGISTER_ACK 4
# define MSG_TYPE_REGISTER_SUPER 5
# define MSG_TYPE_REGISTER_SUPER_ACK 6
# define MSG_TYPE_REGISTER_SUPER_NAK 7
# define MSG_TYPE_FEDERATION 8
# define MSG_TYPE_PEER_INFO 9
# define MSG_TYPE_QUERY_PEER 10
# define MSG_TYPE_MAX_TYPE 10
/* Max available space to add supernodes' informations (sockets and MACs) in REGISTER_SUPER_ACK
* Field sizes of REGISTER_SUPER_ACK as used in encode / decode fucntions in src / wire . c
* REVISIT : replace 255 by DEFAULT_MTU as soon as header encryption allows for longer packets to be encrypted . */
# define REG_SUPER_ACK_PAYLOAD_SPACE \
( 255 - ( 1 + 1 + 2 + sizeof ( n2n_common_t ) + sizeof ( n2n_cookie_t ) + sizeof ( n2n_mac_t ) + 1 + 2 + 4 + 1 + sizeof ( n2n_sock_t ) + 1 ) ) \
/* Space needed to store socket and MAC address of a supernode */
# define REG_SUPER_ACK_PAYLOAD_ENTRY_SIZE (sizeof(n2n_sock_t)+sizeof(n2n_mac_t))
# define PURGE_REGISTRATION_FREQUENCY 30
# define RE_REG_AND_PURGE_FREQUENCY 10
# define REGISTRATION_TIMEOUT 60
# define SOCKET_TIMEOUT_INTERVAL_SECS 10
# define REGISTER_SUPER_INTERVAL_DFL 20 /* sec, usually UDP NAT entries in a firewall expire after 30 seconds */
# define MAX_PING_TIME 3000 /* millisec, indicates default value for ping_time field in peer_info structure */
# define SWEEP_TIME 30 /* sec, indicates the value after which we have to sort the hash list of supernodes in edges */
# define LAST_SEEN_SN_ACTIVE 20 /* sec, indicates supernodes that are proven to be active */
# define LAST_SEEN_SN_INACTIVE 90 /* sec, indicates supernodes that are proven to be inactive: they will be purged */
# define LAST_SEEN_SN_NEW (LAST_SEEN_SN_INACTIVE - LAST_SEEN_SN_ACTIVE) / 2 /* sec, indicates supernodes with unsure status, must be tested to check if they are active */
# define IFACE_UPDATE_INTERVAL (30) /* sec. How long it usually takes to get an IP lease. */
# define TRANSOP_TICK_INTERVAL (10) /* sec */
# define SORT_COMMUNITIES_INTERVAL 90 /* sec. until supernode sorts communities' hash list again */
# define ETH_FRAMESIZE 14
# define IP4_SRCOFFSET 12
# define IP4_DSTOFFSET 16
# define IP4_MIN_SIZE 20
# define UDP_SIZE 8
/* parameters for replay protection */
# define TIME_STAMP_FRAME 0x0000001000000000LL /* clocks of different computers are allowed +/- 16 seconds to be off */
# define TIME_STAMP_JITTER 0x0000000027100000LL / * we allow a packet to arrive 160 ms (== 0x27100 us) before another
* set to 0x0000000000000000LL if increasing ( or equal ) time stamps allowed only */
# define TIME_STAMP_ALLOW_JITTER 1 /* constant for allowing or... */
# define TIME_STAMP_NO_JITTER 0 /* not allowing jitter to be considered */
/* N2N compression indicators. */
/* Compression is disabled by default for outgoing packets if no cli
* option is given . All edges are built with decompression support so
* they are able to understand each other ( this applies to lzo only ) . */
# define N2N_COMPRESSION_ID_INVALID 0
# define N2N_COMPRESSION_ID_NONE 1 /* default, see edge_init_conf_defaults(...) in edge_utils.c */
# define N2N_COMPRESSION_ID_LZO 2 /* set if '-z1' or '-z' cli option is present, see setOption(...) in edge.c */
# define N2N_COMPRESSION_ID_ZSTD 3 /* set if '-z2' cli option is present, available only if compiled with zstd lib */
# define ZSTD_COMPRESSION_LEVEL 7 /* 1 (faster) ... 22 (more compression) */
/* Federation name and indicators */
# define FEDERATION_NAME "*Federation"
enum federation { IS_NO_FEDERATION = 0 , IS_FEDERATION = 1 } ;
/* (un)purgeable community indicator (supernode) */
# define COMMUNITY_UNPURGEABLE 0
# define COMMUNITY_PURGEABLE 1
/* (un)purgeable supernode indicator */
enum sn_purge { SN_PURGEABLE = 0 , SN_UNPURGEABLE = 1 } ;
/* Header encryption indicators */
# define HEADER_ENCRYPTION_UNKNOWN 0
# define HEADER_ENCRYPTION_NONE 1
# define HEADER_ENCRYPTION_ENABLED 2
# define DEFAULT_MTU 1290
# define HASH_ADD_PEER(head,add) \
HASH_ADD ( hh , head , mac_addr , sizeof ( n2n_mac_t ) , add )
# define HASH_FIND_PEER(head,mac,out) \
HASH_FIND ( hh , head , mac , sizeof ( n2n_mac_t ) , out )
# define N2N_EDGE_SN_HOST_SIZE 48
# define N2N_EDGE_NUM_SUPERNODES 2
# define N2N_EDGE_SUP_ATTEMPTS 3 /* Number of failed attmpts before moving on to next supernode. */
# define N2N_PATHNAME_MAXLEN 256
# define N2N_EDGE_MGMT_PORT 5644
# define N2N_SN_MGMT_PORT 5645
/* flag used in add_sn_to_list_by_mac_or_sock */
enum skip_add { SN_ADD = 0 , SN_ADD_SKIP = 1 , SN_ADD_ADDED = 2 } ;
# define N2N_NETMASK_STR_SIZE 16 /* dotted decimal 12 numbers + 3 dots */
# define N2N_MACNAMSIZ 18 /* AA:BB:CC:DD:EE:FF + NULL*/
# define N2N_IF_MODE_SIZE 16 /* static | dhcp */
# define N2N_EDGE_DEFAULT_DEV_NAME "edge0"
# define N2N_EDGE_DEFAULT_NETMASK "255.255.255.0" /* default netmask for edge ip address... */
# define N2N_EDGE_DEFAULT_CIDR_NM 24 /* ... also in cidr format */
# define N2N_SN_LPORT_DEFAULT 7654
# define N2N_SN_PKTBUF_SIZE 2048
/* The way TUNTAP allocated IP. */
# define TUNTAP_IP_MODE_SN_ASSIGN 0
# define TUNTAP_IP_MODE_STATIC 1
# define TUNTAP_IP_MODE_DHCP 2
/* Default network segment of the auto ip address service provided by sn. */
# define N2N_SN_MIN_AUTO_IP_NET_DEFAULT "10.128.0.0"
# define N2N_SN_MAX_AUTO_IP_NET_DEFAULT "10.255.255.0"
# define N2N_SN_AUTO_IP_NET_BIT_DEFAULT 24
/* ************************************** */
# define SUPERNODE_IP "127.0.0.1"
# define SUPERNODE_PORT 1234
/* ************************************** */
# ifndef max
# define max(a, b) ((a < b) ? b : a)
# endif
# ifndef min
# define min(a, b) ((a > b) ? b : a)
# endif
