X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fnode.h;h=ff8b3335ba70740830a08d70f8e51245f315a32c;hb=963c5055505f2fc117cd5efa06eaa02c9b2bf85d;hp=800c6deeb98b2246f5f6e22a67edf7b091512aa4;hpb=c70f52087bf6f7514684bbc859b83aec2ca17ae4;p=meshlink diff --git a/src/node.h b/src/node.h index 800c6dee..ff8b3335 100644 --- a/src/node.h +++ b/src/node.h @@ -1,7 +1,9 @@ +#ifndef MESHLINK_NODE_H +#define MESHLINK_NODE_H + /* node.h -- header for node.c - Copyright (C) 2001-2002 Guus Sliepen , - 2001-2002 Ivo Timmermans + Copyright (C) 2014, 2017 Guus Sliepen 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 @@ -13,82 +15,98 @@ 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 1.1.2.22 2003/05/06 21:13:18 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__ - -#ifdef HAVE_INTTYPES_H -#include -#endif - -#include - -#include "subnet.h" -#include "connection.h" +#include "event.h" +#include "sockaddr.h" +#include "sptps.h" +#include "utcp/utcp.h" +#include "submesh.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; + uint16_t validkey: 1; /* 1 if we currently have a valid key for him */ + uint16_t waitingforkey: 1; /* 1 if we already sent out a request */ + uint16_t visited: 1; /* 1 if this node has been visited by one of the graph algorithms */ + uint16_t reachable: 1; /* 1 if this node is reachable in the graph */ + uint16_t udp_confirmed: 1; /* 1 if the address is one that we received UDP traffic on */ + uint16_t broadcast: 1; /* 1 if the next UDP packet should be broadcast to the local network */ + uint16_t blacklisted: 1; /* 1 if the node is blacklist so we never want to speak with him anymore */ + uint16_t destroyed: 1; /* 1 if the node is being destroyed, deallocate channels when any callback is triggered */ + uint16_t duplicate: 1; /* 1 if the node is duplicate, ie. multiple nodes using the same Name are online */ + uint16_t dirty: 1; /* 1 if the configuration of the node is dirty and needs to be written out */ + uint16_t want_udp: 1; /* 1 if we want working UDP because we have data to send */ } node_status_t; +#define MAX_RECENT 5 + typedef struct node_t { - char *name; /* name of this node */ - long int options; /* options turned on for this node */ + // Public member variables + char *name; /* name of this node */ + void *priv; + + // Private member variables + node_status_t status; + uint16_t minmtu; /* Probed minimum MTU */ + dev_class_t devclass; + + // Used for packet I/O + int sock; /* Socket to use for outgoing UDP packets */ + uint32_t session_id; /* Unique ID for this node's currently running process */ + sptps_t sptps; + sockaddr_t address; /* his real (internet) ip to send UDP packets to */ - sockaddr_t address; /* his real (internet) ip to send UDP packets to */ - char *hostname; /* the hostname of its real ip */ + struct utcp *utcp; - struct node_status_t status; + // Traffic counters + uint64_t in_packets; + uint64_t in_bytes; + uint64_t out_packets; + uint64_t out_bytes; - 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 */ + // MTU probes + timeout_t mtutimeout; /* Probe event */ + int mtuprobes; /* Number of probes */ + uint16_t mtu; /* Maximum size of packets to send to this node */ + uint16_t maxmtu; /* Probed maximum MTU */ - int compression; /* Compressionlevel, 0 = no compression */ + // Used for meta-connection I/O, timeouts + struct meshlink_handle *mesh; /* The mesh this node belongs to */ + struct submesh_t *submesh; /* Nodes Sub-Mesh Handle*/ - list_t *queue; /* Queue for packets awaiting to be encrypted */ + time_t last_req_key; - struct node_t *nexthop; /* nearest node from us to him */ - struct node_t *via; /* next hop for UDP packets */ + struct ecdsa *ecdsa; /* His public ECDSA key */ - avl_tree_t *subnet_tree; /* Pointer to a tree of subnets belonging to this node */ + struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */ + time_t last_connect_try; + time_t last_successfull_connection; - avl_tree_t *edge_tree; /* Edges with this node as one of the endpoints */ + char *canonical_address; /* The canonical address of this node, if known */ + sockaddr_t recent[MAX_RECENT]; /* Recently seen addresses */ - struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */ + // Graph-related member variables + time_t last_reachable; + time_t last_unreachable; - 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 */ + int distance; + struct node_t *nexthop; /* nearest node from us to him */ + struct edge_t *prevedge; /* nearest node from him to us */ + + struct splay_tree_t *edge_tree; /* Edges with this node as one of the endpoints */ } 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); -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(sockaddr_t *); -extern void dump_nodes(void); - -#endif /* __TINC_NODE_H__ */ +extern void init_nodes(struct meshlink_handle *mesh); +extern void exit_nodes(struct meshlink_handle *mesh); +extern node_t *new_node(void) __attribute__((__malloc__)); +extern void free_node(node_t *n); +extern void node_add(struct meshlink_handle *mesh, node_t *n); +extern void node_del(struct meshlink_handle *mesh, node_t *n); +extern node_t *lookup_node(struct meshlink_handle *mesh, const char *name) __attribute__((__warn_unused_result__)); +extern node_t *lookup_node_udp(struct meshlink_handle *mesh, const sockaddr_t *sa) __attribute__((__warn_unused_result__)); +extern void update_node_udp(struct meshlink_handle *mesh, node_t *n, const sockaddr_t *sa); +extern bool node_add_recent_address(struct meshlink_handle *mesh, node_t *n, const sockaddr_t *addr); + +#endif