X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnode.h;h=69ed12f0aa9d81c3b56a1f72436e56854b9dd733;hp=f96c56e383ac24bd555aa1af9c08eeab6c2e5561;hb=ed20896612bcee11ff4180ff78ede950623c2fa6;hpb=f22b9417510cca258785f8958c8dfed90e26d81b diff --git a/src/node.h b/src/node.h index f96c56e3..69ed12f0 100644 --- a/src/node.h +++ b/src/node.h @@ -1,7 +1,7 @@ /* node.h -- header for node.c - Copyright (C) 2001 Guus Sliepen , - 2001 Ivo Timmermans + Copyright (C) 2001-2016 Guus Sliepen , + 2001-2005 Ivo Timmermans 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 @@ -13,35 +13,94 @@ 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., 675 Mass Ave, Cambridge, MA 02139, USA. - - $Id: node.h,v 1.1.2.2 2001/10/09 19:37:10 guus Exp $ + 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., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ +#ifndef __TINC_NODE_H__ +#define __TINC_NODE_H__ + +#include "avl_tree.h" +#include "connection.h" +#include "event.h" +#include "subnet.h" + +typedef struct node_status_t { + unsigned int unused_active:1; /* 1 if active (not used for nodes) */ + unsigned int validkey:1; /* 1 if we currently have a valid key for him */ + unsigned int unused_waitingforkey:1; /* 1 if we already sent out a request */ + unsigned int visited:1; /* 1 if this node has been visited by one of the graph algorithms */ + unsigned int reachable:1; /* 1 if this node is reachable in the graph */ + unsigned int indirect:1; /* 1 if this node is not directly reachable by us */ + unsigned int unused:26; +} node_status_t; + typedef struct node_t { - char *name; /* name of this connection */ - int protocol_version; /* used protocol */ - long int options; /* options turned on for this connection */ + char *name; /* name of this node */ + uint32_t options; /* options turned on for this node */ + + int sock; /* Socket to use for outgoing UDP packets */ + sockaddr_t address; /* his real (internet) ip to send UDP packets to */ + char *hostname; /* the hostname of its real ip */ + + node_status_t status; + time_t last_req_key; - ipv4_t address; /* his real (internet) ip to send UDP packets to */ - short unsigned int port; /* port number of UDP connection */ - char *hostname; /* the hostname of its real ip */ + const EVP_CIPHER *incipher; /* Cipher type for UDP packets received from him */ + char *inkey; /* Cipher key and iv */ + int inkeylength; /* Cipher key and iv length */ + EVP_CIPHER_CTX *inctx; /* Cipher context */ + + const EVP_CIPHER *outcipher; /* Cipher type for UDP packets sent to him*/ + char *outkey; /* Cipher key and iv */ + int outkeylength; /* Cipher key and iv length */ + EVP_CIPHER_CTX *outctx; /* Cipher context */ + + const EVP_MD *indigest; /* Digest type for MAC of packets received from him */ + int inmaclength; /* Length of MAC */ - status_bits_t status; /* status info */ + const EVP_MD *outdigest; /* Digest type for MAC of packets sent to him*/ + int outmaclength; /* Length of MAC */ - EVP_CIPHER *cipher; /* Cipher type for UDP packets */ - char *key; /* Cipher key and iv */ - int keylength; /* Cipher key and iv length*/ + int incompression; /* Compressionlevel, 0 = no compression */ + int outcompression; /* Compressionlevel, 0 = no compression */ - list_t *queue; /* Queue for packets awaiting to be encrypted */ + struct node_t *nexthop; /* nearest node from us to him */ + struct edge_t *prevedge; /* nearest node from him to us */ + struct node_t *via; /* next hop for UDP packets */ - struct node_t *nexthop; /* nearest meta-hop from us to him */ - struct node_t *prevhop; /* nearest meta-hop from him to us */ - struct node_t *via; /* next hop for UDP packets */ - - avl_tree_t *subnet_tree; /* Pointer to a tree of subnets belonging to this node */ + avl_tree_t *subnet_tree; /* Pointer to a tree of subnets belonging to this node */ - struct config_t *config; /* Pointer to configuration tree belonging to this node */ + avl_tree_t *edge_tree; /* Edges with this node as one of the endpoints */ + + struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */ + + uint32_t sent_seqno; /* Sequence number last sent to this node */ + uint32_t received_seqno; /* Sequence number last received from this node */ + uint32_t farfuture; /* Packets in a row that have arrived from the far future */ + unsigned char* late; /* Bitfield marking late packets */ + + length_t mtu; /* Maximum size of packets to send to this node */ + length_t minmtu; /* Probed minimum MTU */ + length_t maxmtu; /* Probed maximum MTU */ + int mtuprobes; /* Number of probes */ + event_t *mtuevent; /* Probe event */ } node_t; + +extern struct node_t *myself; +extern avl_tree_t *node_tree; +extern avl_tree_t *node_udp_tree; + +extern void init_nodes(void); +extern void exit_nodes(void); +extern node_t *new_node(void) __attribute__ ((__malloc__)); +extern void free_node(node_t *); +extern void node_add(node_t *); +extern void node_del(node_t *); +extern node_t *lookup_node(char *); +extern node_t *lookup_node_udp(const sockaddr_t *); +extern void update_node_udp(node_t *, const sockaddr_t *); +extern void dump_nodes(void); + +#endif /* __TINC_NODE_H__ */