X-Git-Url: http://git.meshlink.io/?a=blobdiff_plain;f=src%2Fconnection.h;h=25e122d05f0726de19da9d04f665e7b11a975b31;hb=963c5055505f2fc117cd5efa06eaa02c9b2bf85d;hp=5d2d3be460922a8a71ba5719540769abd95f2bd2;hpb=34f9e6cf2d6d2b81eb63f9f28963b447a2157740;p=meshlink diff --git a/src/connection.h b/src/connection.h index 5d2d3be4..25e122d0 100644 --- a/src/connection.h +++ b/src/connection.h @@ -1,7 +1,9 @@ +#ifndef MESHLINK_CONNECTION_H +#define MESHLINK_CONNECTION_H + /* connection.h -- header for connection.c - Copyright (C) 2000,2001 Guus Sliepen , - 2000,2001 Ivo Timmermans + Copyright (C) 2000-2013, 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 @@ -13,109 +15,75 @@ 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: connection.h,v 1.1.2.8 2001/03/04 13:59:25 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_CONNECTION_H__ -#define __TINC_CONNECTION_H__ +#include "buffer.h" +#include "list.h" +#include "sptps.h" + +#define OPTION_INDIRECT 0x0001 +#define OPTION_TCPONLY 0x0002 +#define OPTION_PMTU_DISCOVERY 0x0004 +#define OPTION_CLAMP_MSS 0x0008 +#define OPTION_VERSION(x) ((x) >> 24) /* Top 8 bits are for protocol minor version */ + +typedef struct connection_status_t { + uint16_t pinged: 1; /* sent ping */ + uint16_t active: 1; /* 1 if active.. */ + uint16_t connecting: 1; /* 1 if we are waiting for a non-blocking connect() to finish */ + uint16_t unused: 1; + uint16_t control: 1; /* 1 if this is a control connection */ + uint16_t pcap: 1; /* 1 if this is a control connection requesting packet capture */ + uint16_t log: 1; /* 1 if this is a control connection requesting log dump */ + uint16_t invitation: 1; /* 1 if this is an invitation */ + uint16_t invitation_used: 1; /* 1 if the invitation has been consumed */ + uint16_t initiator: 1; /* 1 if we initiated this connection */ +} connection_status_t; + +#include "ecdsa.h" +#include "edge.h" +#include "net.h" +#include "node.h" +#include "submesh.h" -#include -#include +typedef struct connection_t { + char *name; /* name he claims to have */ + struct node_t *node; /* node associated with the other end */ -#include "config.h" + connection_status_t status; /* status info */ + int socket; /* socket used for this connection */ + union sockaddr_t address; /* his real (internet) ip */ -#ifdef HAVE_OPENSSL_EVP_H -# include -#else -# include -#endif + struct meshlink_handle *mesh; /* the mesh this connection belongs to */ -#ifdef HAVE_OPENSSL_RSA_H -# include -#else -# include -#endif + // I/O + sptps_t sptps; + struct buffer_t inbuf; + struct buffer_t outbuf; + io_t io; /* input/output event on this metadata connection */ + int tcplen; /* length of incoming TCPpacket */ + int allow_request; /* defined if there's only one request possible */ + time_t last_ping_time; /* last time we saw some activity from the other end or pinged them */ -#include "net.h" -#include "conf.h" - -typedef struct status_bits_t { - int pinged:1; /* sent ping */ - int meta:1; /* meta connection exists */ - int active:1; /* 1 if active.. */ - int outgoing:1; /* I myself asked for this conn */ - int termreq:1; /* the termination of this connection was requested */ - int remove:1; /* Set to 1 if you want this connection removed */ - int timeout:1; /* 1 if gotten timeout */ - 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 dataopen:1; /* 1 if we have a valid UDP connection open */ - int encryptout:1; /* 1 if we can encrypt outgoing traffic */ - int decryptin:1; /* 1 if we have to decrypt incoming traffic */ - int unused:18; -} status_bits_t; - -#define OPTION_INDIRECT 0x0001 -#define OPTION_TCPONLY 0x0002 + struct outgoing_t *outgoing; /* used to keep track of outgoing connections */ -typedef struct connection_t { - char *name; /* name of this connection */ - ipv4_t address; /* his real (internet) ip */ - char *hostname; /* the hostname of its real ip */ - int protocol_version; /* used protocol */ - short unsigned int port; /* port number for UDP traffic */ - long int options; /* options turned on for this connection */ - - int socket; /* our udp vpn socket */ - int meta_socket; /* our tcp meta socket */ - status_bits_t status; /* status info */ - - RSA *rsa_key; /* the public/private key */ - EVP_CIPHER_CTX *cipher_inctx; /* Context of encrypted meta data that will come from him to us */ - EVP_CIPHER_CTX *cipher_outctx; /* Context of encrypted meta data that will be sent from us to him */ - char *cipher_inkey; /* His symmetric meta key */ - char *cipher_outkey; /* Our symmetric meta key */ - EVP_CIPHER *cipher_pkttype; /* Cipher type for encrypted vpn packets */ - char *cipher_pktkey; /* Cipher key and iv */ - int cipher_pktkeylength; /* Cipher key and iv length*/ - - char *buffer; /* metadata input buffer */ - int buflen; /* bytes read into buffer */ - int reqlen; /* length of first request in buffer */ - int allow_request; /* defined if there's only one request possible */ - - time_t last_ping_time; /* last time we saw some activity from the other end */ - - list_t *queue; /* Queue for packets awaiting to be encrypted */ - - char *mychallenge; /* challenge we received from him */ - char *hischallenge; /* challenge we sent to him */ - - struct connection_t *nexthop; /* nearest meta-hop in this direction */ - - avl_tree_t *subnet_tree; /* Pointer to a tree of subnets belonging to this connection */ - - struct config_t *config; /* Pointer to configuration tree belonging to this host */ -} connection_t; + struct edge_t *edge; /* edge associated with this connection */ + struct submesh_t *submesh; /* his submesh handle if available in invitation file */ -extern avl_tree_t *connection_tree; -extern connection_t *myself; + // Only used during authentication + ecdsa_t *ecdsa; /* his public ECDSA key */ + int protocol_major; /* used protocol */ + int protocol_minor; /* used protocol */ +} connection_t; -extern void init_connections(void); -extern connection_t *new_connection(void); +extern void init_connections(struct meshlink_handle *mesh); +extern void exit_connections(struct meshlink_handle *mesh); +extern connection_t *new_connection(void) __attribute__((__malloc__)); extern void free_connection(connection_t *); -extern void id_add(connection_t *); -extern void connection_add(connection_t *); -extern void connection_del(connection_t *); -extern connection_t *lookup_id(char *); -extern connection_t *lookup_connection(ipv4_t, short unsigned int); -extern void dump_connection_list(void); -extern int read_host_config(connection_t *); -extern void destroy_connection_tree(void); -extern void prune_connection_tree(void); - -#endif /* __TINC_CONNECTION_H__ */ +extern void connection_add(struct meshlink_handle *mesh, connection_t *); +extern void connection_del(struct meshlink_handle *mesh, connection_t *); + +#endif