/** * (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 * */ /* 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-(sizeof(n2n_common_t)+sizeof(n2n_REGISTER_SUPER_ACK_t))) /* Space needed to store socket and MAC address of a supernode */ #define REG_SUPER_ACK_PAYLOAD_ENTRY_SIZE (sizeof(n2n_REGISTER_SUPER_ACK_payload_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 SWEEP_TIME 30 /* sec, indicates the value after which we have to sort the hash list of supernodes in edges * and when we send out packets to query selection-relevant informations from supernodes. */ /* Timeouts used in re_register_and_purge_supernodes. LAST_SEEN_SN_ACTIVE and LAST_SEEN_SN_INACTIVE * values should be at least 3*SOCKET_TIMEOUT_INTERVAL_SECS apart. */ #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 /* ************************************** */ #define N2N_PKT_VERSION 3 #define N2N_DEFAULT_TTL 2 /* can be forwarded twice at most */ #define N2N_COMMUNITY_SIZE 16 #define N2N_MAC_SIZE 6 #define N2N_COOKIE_SIZE 4 #define N2N_DESC_SIZE 16 #define N2N_PKT_BUF_SIZE 2048 #define N2N_SOCKBUF_SIZE 64 /* string representation of INET or INET6 sockets */ #define N2N_MULTICAST_PORT 1968 #define N2N_MULTICAST_GROUP "224.0.0.68" #ifdef WIN32 #define N2N_IFNAMSIZ 64 #else #define N2N_IFNAMSIZ 16 /* 15 chars * NULL */ #endif #define SN_SELECTION_CRITERION_DATA_TYPE uint32_t #define SN_SELECTION_CRITERION_BUF_SIZE 14 #define N2N_TRANSFORM_ID_USER_START 64 #define N2N_TRANSFORM_ID_MAX 65535 #ifndef max #define max(a, b) ((a < b) ? b : a) #endif #ifndef min #define min(a, b) ((a > b) ? b : a) #endif