X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fconnection.h;h=877601fe3ad7b426405de9fed225efb7e22fd56f;hp=5d2d3be460922a8a71ba5719540769abd95f2bd2;hb=85a841258c1a19282b48c6b8663128568c16d9ab;hpb=34f9e6cf2d6d2b81eb63f9f28963b447a2157740;ds=sidebyside diff --git a/src/connection.h b/src/connection.h index 5d2d3be4..877601fe 100644 --- a/src/connection.h +++ b/src/connection.h @@ -1,7 +1,7 @@ /* connection.h -- header for connection.c - Copyright (C) 2000,2001 Guus Sliepen , - 2000,2001 Ivo Timmermans + Copyright (C) 2000-2012 Guus Sliepen , + 2000-2005 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 @@ -13,109 +13,103 @@ 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 -#include - -#include "config.h" +#include +#include -#ifdef HAVE_OPENSSL_EVP_H -# include -#else -# include -#endif - -#ifdef HAVE_OPENSSL_RSA_H -# include -#else -# include -#endif - -#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; +#include "avl_tree.h" #define OPTION_INDIRECT 0x0001 #define OPTION_TCPONLY 0x0002 +#define OPTION_PMTU_DISCOVERY 0x0004 +#define OPTION_CLAMP_MSS 0x0008 + +typedef struct connection_status_t { + unsigned int pinged:1; /* sent ping */ + unsigned int active:1; /* 1 if active.. */ + unsigned int connecting:1; /* 1 if we are waiting for a non-blocking connect() to finish */ + unsigned int unused_termreq:1; /* the termination of this connection was requested */ + unsigned int remove:1; /* Set to 1 if you want this connection removed */ + unsigned int timeout:1; /* 1 if gotten timeout */ + unsigned int encryptout:1; /* 1 if we can encrypt outgoing traffic */ + unsigned int decryptin:1; /* 1 if we have to decrypt incoming traffic */ + unsigned int mst:1; /* 1 if this connection is part of a minimum spanning tree */ + unsigned int unused:23; +} connection_status_t; + +#include "edge.h" +#include "net.h" +#include "node.h" 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 */ + char *name; /* name he claims to have */ + + union sockaddr_t address; /* his real (internet) ip */ + char *hostname; /* the hostname of its real ip */ + int protocol_version; /* used protocol */ + + int socket; /* socket used for this connection */ + uint32_t options; /* options for this connection */ + connection_status_t status; /* status info */ + int estimated_weight; /* estimation for the weight of the edge for this connection */ + struct timeval start; /* time this connection was started, used for above estimation */ + struct outgoing_t *outgoing; /* used to keep track of outgoing connections */ + + struct node_t *node; /* node associated with the other end */ + struct edge_t *edge; /* edge associated with this connection */ + + RSA *rsa_key; /* his public/private key */ + const EVP_CIPHER *incipher; /* Cipher he will use to send data to us */ + const EVP_CIPHER *outcipher; /* Cipher we will use to send data to him */ + EVP_CIPHER_CTX *inctx; /* Context of encrypted meta data that will come from him to us */ + EVP_CIPHER_CTX *outctx; /* Context of encrypted meta data that will be sent from us to him */ + char *inkey; /* His symmetric meta key + iv */ + char *outkey; /* Our symmetric meta key + iv */ + int inkeylength; /* Length of his key + iv */ + int outkeylength; /* Length of our key + iv */ + const EVP_MD *indigest; + const EVP_MD *outdigest; + int inmaclength; + int outmaclength; + int incompression; + int outcompression; + char *mychallenge; /* challenge we received from him */ + char *hischallenge; /* challenge we sent to him */ + + char buffer[MAXBUFSIZE]; /* metadata input buffer */ + int buflen; /* bytes read into buffer */ + int reqlen; /* length of incoming request */ + int tcplen; /* length of incoming TCPpacket */ + int allow_request; /* defined if there's only one request possible */ + + char *outbuf; /* metadata output buffer */ + int outbufstart; /* index of first meaningful byte in output buffer */ + int outbuflen; /* number of meaningful bytes in output buffer */ + int outbufsize; /* number of bytes allocated to output buffer */ + + time_t last_ping_time; /* last time we saw some activity from the other end or pinged them */ + time_t last_flushed_time; /* last time buffer was empty. Only meaningful if outbuflen > 0 */ + + avl_tree_t *config_tree; /* Pointer to configuration tree belonging to him */ } connection_t; extern avl_tree_t *connection_tree; -extern connection_t *myself; +extern connection_t *everyone; extern void init_connections(void); -extern connection_t *new_connection(void); +extern void exit_connections(void); +extern connection_t *new_connection(void) __attribute__ ((__malloc__)); extern void free_connection(connection_t *); -extern void id_add(connection_t *); +extern void free_connection_partially(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 dump_connections(void); + +#endif /* __TINC_CONNECTION_H__ */