--- /dev/null
+/*
+ connection.h -- header for connection.c
+ Copyright (C) 2000-2002 Guus Sliepen <guus@sliepen.warande.net>,
+ 2000-2002 Ivo Timmermans <itimmermans@bigfoot.com>
+
+ 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
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ 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 2002/04/28 12:46:26 zarq Exp $
+*/
+
+#ifndef __TINC_CONNECTION_H__
+#define __TINC_CONNECTION_H__
+
+#include <sys/time.h>
+
+#include <avl_tree.h>
+#include <list.h>
+
+#ifdef HAVE_OPENSSL_EVP_H
+# include <openssl/evp.h>
+#else
+# include <evp.h>
+#endif
+
+#ifdef HAVE_OPENSSL_RSA_H
+# include <openssl/rsa.h>
+#else
+# include <rsa.h>
+#endif
+
+#include "net.h"
+#include "conf.h"
+
+#include "node.h"
+#include "edge.h"
+
+#define OPTION_INDIRECT 0x0001
+#define OPTION_TCPONLY 0x0002
+
+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:18;
+} connection_status_t;
+
+typedef struct connection_t {
+ char *name; /* name he claims to have */
+
+ 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 */
+ 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 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 */
+
+ avl_tree_t *config_tree; /* Pointer to configuration tree belonging to him */
+} connection_t;
+
+extern avl_tree_t *connection_tree;
+
+extern void init_connections(void);
+extern void exit_connections(void);
+extern connection_t *new_connection(void);
+extern void free_connection(connection_t *);
+extern void connection_add(connection_t *);
+extern void connection_del(connection_t *);
+extern void dump_connections(void);
+extern int read_connection_config(connection_t *);
+
+#endif /* __TINC_CONNECTION_H__ */
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