40731d030f
(The new code is still segfaulting for me, and I'd like to proceed with other work.) This largely rolls back to the revision 1545 state of the existing code (new crypto layer is still there with no callers), though I reintroduced the segfault fix of revision 1562.
115 lines
4.3 KiB
C
115 lines
4.3 KiB
C
/*
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connection.h -- header for connection.c
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Copyright (C) 2000-2006 Guus Sliepen <guus@tinc-vpn.org>,
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2000-2005 Ivo Timmermans
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#ifndef __TINC_CONNECTION_H__
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#define __TINC_CONNECTION_H__
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#include <openssl/rsa.h>
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#include <openssl/evp.h>
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#include <event.h>
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#include "splay_tree.h"
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#define OPTION_INDIRECT 0x0001
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#define OPTION_TCPONLY 0x0002
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#define OPTION_PMTU_DISCOVERY 0x0004
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typedef union connection_status_t {
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struct {
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int pinged:1; /* sent ping */
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int active:1; /* 1 if active.. */
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int connecting:1; /* 1 if we are waiting for a non-blocking connect() to finish */
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int termreq:1; /* the termination of this connection was requested */
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int remove_unused:1; /* Set to 1 if you want this connection removed */
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int timeout_unused:1; /* 1 if gotten timeout */
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int encryptout:1; /* 1 if we can encrypt outgoing traffic */
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int decryptin:1; /* 1 if we have to decrypt incoming traffic */
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int mst:1; /* 1 if this connection is part of a minimum spanning tree */
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int unused:23;
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};
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uint32_t value;
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} connection_status_t;
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#include "edge.h"
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#include "list.h"
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#include "net.h"
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#include "node.h"
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typedef struct connection_t {
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char *name; /* name he claims to have */
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union sockaddr_t address; /* his real (internet) ip */
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char *hostname; /* the hostname of its real ip */
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int protocol_version; /* used protocol */
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int socket; /* socket used for this connection */
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long int options; /* options for this connection */
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connection_status_t status; /* status info */
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int estimated_weight; /* estimation for the weight of the edge for this connection */
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struct timeval start; /* time this connection was started, used for above estimation */
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struct outgoing_t *outgoing; /* used to keep track of outgoing connections */
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struct node_t *node; /* node associated with the other end */
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struct edge_t *edge; /* edge associated with this connection */
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RSA *rsa_key; /* his public/private key */
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const EVP_CIPHER *incipher; /* Cipher he will use to send data to us */
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const EVP_CIPHER *outcipher; /* Cipher we will use to send data to him */
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EVP_CIPHER_CTX *inctx; /* Context of encrypted meta data that will come from him to us */
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EVP_CIPHER_CTX *outctx; /* Context of encrypted meta data that will be sent from us to him */
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char *inkey; /* His symmetric meta key + iv */
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char *outkey; /* Our symmetric meta key + iv */
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int inkeylength; /* Length of his key + iv */
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int outkeylength; /* Length of our key + iv */
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const EVP_MD *indigest;
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const EVP_MD *outdigest;
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int inmaclength;
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int outmaclength;
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int incompression;
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int outcompression;
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char *mychallenge; /* challenge we received from him */
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char *hischallenge; /* challenge we sent to him */
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struct bufferevent *buffer; /* buffer events on this metadata connection */
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struct event inevent; /* input event on this metadata connection */
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int tcplen; /* length of incoming TCPpacket */
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int allow_request; /* defined if there's only one request possible */
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time_t last_ping_time; /* last time we saw some activity from the other end or pinged them */
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splay_tree_t *config_tree; /* Pointer to configuration tree belonging to him */
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} connection_t;
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extern splay_tree_t *connection_tree;
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extern connection_t *broadcast;
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extern void init_connections(void);
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extern void exit_connections(void);
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extern connection_t *new_connection(void) __attribute__ ((__malloc__));
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extern void free_connection(connection_t *);
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extern void connection_add(connection_t *);
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extern void connection_del(connection_t *);
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extern void dump_connections(void);
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extern bool read_connection_config(connection_t *);
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#endif /* __TINC_CONNECTION_H__ */
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