/* connlist.h -- header for connlist.c Copyright (C) 2000 Guus Sliepen , 2000 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 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 1.1.2.10 2000/11/03 22:35:10 zarq Exp $ */ #ifndef __TINC_CONNLIST_H__ #define __TINC_CONNLIST_H__ #include #include #include "net.h" #include "conf.h" typedef struct status_bits_t { int pinged:1; /* sent ping */ int got_pong:1; /* received pong */ 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 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 */ int want_ping; /* 0 if there's no need to check for activity. Shouldn't this go into status? (GS) */ 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__ */