-/*
- connlist.h -- header for connlist.c
- Copyright (C) 2000 Guus Sliepen <guus@sliepen.warande.net>,
- 2000 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: connlist.h,v 1.1.2.13 2000/11/15 01:06:10 zarq Exp $
-*/
-
-#ifndef __TINC_CONNLIST_H__
-#define __TINC_CONNLIST_H__
-
-#include "config.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"
-
-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;
-
-typedef struct option_bits_t {
- int unused:32;
-} option_bits_t;
-
-typedef struct conn_list_t {
- char *name; /* name of this connection */
- ipv4_t address; /* his real (internet) ip */
- char *hostname; /* the hostname of its real ip */
- short unsigned int port; /* his portnumber */
- int protocol_version; /* used protocol */
- long unsigned int options; /* options turned on for this connection */
-
- int flags; /* his flags */
- int socket; /* our udp vpn socket */
- int meta_socket; /* our tcp meta socket */
- status_bits_t status; /* status info */
- packet_queue_t *sq; /* pending outgoing packets */
- packet_queue_t *rq; /* pending incoming packets (they have no
- valid key to be decrypted with) */
- 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 */
-
- char *mychallenge; /* challenge we received from him */
- char *hischallenge; /* challenge we sent to him */
-
- struct conn_list_t *nexthop; /* nearest meta-hop in this direction */
-
- struct subnet_t *subnets; /* Pointer to a list of subnets belonging to this connection */
-
- struct config_t *config; /* Pointer to configuration tree belonging to this host */
-
- struct conn_list_t *next; /* after all, it's a list of connections */
- struct conn_list_t *prev; /* doubly linked for O(1) deletions */
-} conn_list_t;
-
-#include "subnet.h"
-
-extern conn_list_t *conn_list;
-extern conn_list_t *myself;
-
-extern conn_list_t *new_conn_list();
-extern void free_conn_list(conn_list_t *);
-extern void conn_list_add(conn_list_t *);
-extern void conn_list_del(conn_list_t *);
-extern conn_list_t *lookup_id(char *);
-extern void dump_conn_list(void);
-extern int read_host_config(conn_list_t *);
-extern void destroy_conn_list(void);
-extern void prune_conn_list(void);
-
-#endif /* __TINC_CONNLIST_H__ */