X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fnode.h;h=ff8b3335ba70740830a08d70f8e51245f315a32c;hb=2224a56ea44bffdafbe29ba7b74d1a0adb0cbd95;hp=815b793f543f92870b87d5b22c955d71268f4b36;hpb=49a2cd806c73cff1ab6a712a996c7f7d4e1f32c0;p=meshlink diff --git a/src/node.h b/src/node.h index 815b793f..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 Guus Sliepen , - 2001 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 @@ -13,35 +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 1.1.2.1 2001/10/09 19:30:30 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. */ +#include "event.h" +#include "sockaddr.h" +#include "sptps.h" +#include "utcp/utcp.h" +#include "submesh.h" + +typedef struct node_status_t { + 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 connection */ - int protocol_version; /* used protocol */ - long int options; /* options turned on for this connection */ + // 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 */ - 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 */ + struct utcp *utcp; - status_bits_t status; /* status info */ + // Traffic counters + uint64_t in_packets; + uint64_t in_bytes; + uint64_t out_packets; + uint64_t out_bytes; - EVP_CIPHER *cipher_pkttype; /* Cipher type for UDP packets */ - char *cipher_pktkey; /* Cipher key and iv */ - int cipher_pktkeylength; /* Cipher key and iv length*/ + // 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 */ - list_t *queue; /* Queue for packets awaiting to be encrypted */ + // 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*/ - 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 */ + time_t last_req_key; - struct config_t *config; /* Pointer to configuration tree belonging to this node */ + struct ecdsa *ecdsa; /* His public ECDSA key */ + + struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */ + time_t last_connect_try; + time_t last_successfull_connection; + + char *canonical_address; /* The canonical address of this node, if known */ + sockaddr_t recent[MAX_RECENT]; /* Recently seen addresses */ + + // Graph-related member variables + time_t last_reachable; + time_t last_unreachable; + + 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 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