/* node.h -- header for node.c Copyright (C) 2001-2003 Guus Sliepen , 2001-2003 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 the Free Software Foundation; either version 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. $Id: node.h,v 1.1.2.27 2003/07/24 12:08:15 guus Exp $ */ #ifndef __TINC_NODE_H__ #define __TINC_NODE_H__ #include "avl_tree.h" #include "connection.h" #include "list.h" #include "subnet.h" typedef struct node_status_t { int active:1; /* 1 if active.. */ int validkey:1; /* 1 if we currently have a valid key for him */ int waitingforkey:1; /* 1 if we already sent out a request */ int visited:1; /* 1 if this node has been visited by one of the graph algorithms */ int reachable:1; /* 1 if this node is reachable in the graph */ int indirect:1; /* 1 if this node is not directly reachable by us */ int unused:26; } node_status_t; typedef struct node_t { char *name; /* name of this node */ long int options; /* options turned on for this node */ sockaddr_t address; /* his real (internet) ip to send UDP packets to */ char *hostname; /* the hostname of its real ip */ node_status_t status; const EVP_CIPHER *cipher; /* Cipher type for UDP packets */ char *key; /* Cipher key and iv */ int keylength; /* Cipher key and iv length */ EVP_CIPHER_CTX packet_ctx; /* Cipher context */ const EVP_MD *digest; /* Digest type for MAC */ int maclength; /* Length of MAC */ int compression; /* 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 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 *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 */ unsigned char late[16]; /* Bitfield marking late packets */ } 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(const char *); extern node_t *lookup_node_udp(const sockaddr_t *); extern void dump_nodes(void); #endif /* __TINC_NODE_H__ */