X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fconnection.h;h=8c2d9f3f57439eb275c3fbd6053a95943ab05d44;hp=962d32b27b5b5f0bdd19107e4dc512207f3ba083;hb=57bc9a1835bcb6a8df7963ee4ab04fde34f28eaf;hpb=df3220a1549f992cbf4a9b6e67c1e67b69896c7d diff --git a/src/connection.h b/src/connection.h index 962d32b2..8c2d9f3f 100644 --- a/src/connection.h +++ b/src/connection.h @@ -1,7 +1,10 @@ +#ifndef TINC_CONNECTION_H +#define TINC_CONNECTION_H + /* connection.h -- header for connection.c - Copyright (C) 2000-2005 Guus Sliepen , - 2000-2005 Ivo Timmermans + Copyright (C) 2000-2016 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 @@ -13,99 +16,103 @@ 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. - - $Id$ + 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 "avl_tree.h" -#define OPTION_INDIRECT 0x0001 -#define OPTION_TCPONLY 0x0002 -#define OPTION_PMTU_DISCOVERY 0x0004 +#define OPTION_INDIRECT 0x0001 +#define OPTION_TCPONLY 0x0002 +#define OPTION_PMTU_DISCOVERY 0x0004 +#define OPTION_CLAMP_MSS 0x0008 typedef struct connection_status_t { - int pinged:1; /* sent ping */ - int active:1; /* 1 if active.. */ - int connecting:1; /* 1 if we are waiting for a non-blocking connect() to finish */ - 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 encryptout:1; /* 1 if we can encrypt outgoing traffic */ - int decryptin:1; /* 1 if we have to decrypt incoming traffic */ - int mst:1; /* 1 if this connection is part of a minimum spanning tree */ - int unused:23; + 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 proxy_passed: 1; /* 1 if we are connecting via a proxy and we have finished talking with it */ + unsigned int unused: 22; } connection_status_t; #include "edge.h" -#include "list.h" #include "net.h" #include "node.h" typedef struct connection_t { - 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 */ - long int options; /* options for this connection */ - struct 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 */ + 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 */ + uint64_t inbudget; /* Encrypted bytes send budget */ + uint64_t outbudget; /* Encrypted bytes receive budget */ + 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 *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 */ + length_t tcplen; /* length of incoming TCPpacket */ + int allow_request; /* defined if there's only one request possible */ - 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 */ + 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 */ + avl_tree_t *config_tree; /* Pointer to configuration tree belonging to him */ } connection_t; extern avl_tree_t *connection_tree; -extern connection_t *broadcast; +extern connection_t *everyone; extern void init_connections(void); extern void exit_connections(void); -extern connection_t *new_connection(void) __attribute__ ((__malloc__)); -extern void free_connection(connection_t *); -extern void connection_add(connection_t *); -extern void connection_del(connection_t *); +extern connection_t *new_connection(void) __attribute__((__malloc__)); +extern void free_connection(connection_t *c); +extern void free_connection_partially(connection_t *c); +extern void connection_add(connection_t *c); +extern void connection_del(connection_t *c); extern void dump_connections(void); -extern bool read_connection_config(connection_t *); -#endif /* __TINC_CONNECTION_H__ */ +#endif