/*
protocol.h -- header for protocol.c
- Copyright (C) 1999 Ivo Timmermans <zarq@iname.com>
+ Copyright (C) 1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>,
+ 2000 Guus Sliepen <guus@sliepen.warande.net>
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
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: protocol.h,v 1.5.4.9 2000/10/11 10:35:17 guus Exp $
*/
#ifndef __TINC_PROTOCOL_H__
#define __TINC_PROTOCOL_H__
#include "net.h"
+#include "subnet.h"
-enum {
- PROT_RESERVED = 0, /* reserved: do not use. */
- PROT_NOT_IN_USE,
- PROT_TOO_OLD = 2,
- PROT_3,
- PROT_4,
- PROT_ECHELON,
- PROT_CURRENT, /* protocol currently in use */
-};
+/* Protocol version. Different versions are incompatible,
+ incompatible version have different protocols.
+ */
+
+#define PROT_CURRENT 8
+
+/* Length of the challenge. Since the challenge will also
+ contain the key for the symmetric cipher, it must be
+ quite large.
+ */
+
+#define CHAL_LENGTH 2048
+
+/* Request numbers */
enum {
- ACK = 1, /* acknowledged */
- AUTH_S_INIT = 10, /* initiate authentication */
- AUTH_C_INIT,
- AUTH_S_SPP, /* send passphrase */
- AUTH_C_SPP,
- AUTH_S_SKEY, /* send g^k */
- AUTH_C_SKEY,
- AUTH_S_SACK, /* send ack */
- AUTH_C_RACK, /* waiting for ack */
- TERMREQ = 30, /* terminate connection */
- PINGTIMEOUT, /* terminate due to ping t.o. */
- DEL_HOST, /* forward a termreq to others */
- PING = 40, /* ping */
- PONG,
- ADD_HOST = 60, /* Add new given host to connection list */
- BASIC_INFO, /* some basic info follows */
- PASSPHRASE, /* encrypted passphrase */
- PUBLIC_KEY, /* public key in base-36 */
- HOLD = 80, /* don't send any data */
- RESUME, /* resume dataflow with new encryption key */
- CALCULATE = 100, /* calculate the following numer^privkey and send me the result */
- CALC_RES, /* result of the above */
- ALMOST_KEY, /* this number^privkey is the shared key */
- REQ_KEY = 160, /* request public key */
- ANS_KEY, /* answer to such request */
- KEY_CHANGED, /* public key has changed */
+ ALL = -1, /* Guardian for allow_request */
+ ID = 0, CHALLENGE, CHAL_REPLY, ACK,
+ STATUS, ERROR, TERMREQ,
+ PING, PONG,
+ ADD_HOST, DEL_HOST,
+ ADD_SUBNET, DEL_SUBNET,
+ KEY_CHANGED, REQ_KEY, ANS_KEY,
+ LAST /* Guardian for the highest request number */
};
-extern int (*request_handlers[256])(conn_list_t*);
+extern int (*request_handlers[])(conn_list_t*);
+extern int send_id(conn_list_t*);
+extern int send_challenge(conn_list_t*);
+extern int send_chal_reply(conn_list_t*, char*);
+extern int send_ack(conn_list_t*);
+extern int send_status(conn_list_t*, int, char*);
+extern int send_error(conn_list_t*, int, char*);
+extern int send_termreq(conn_list_t*);
extern int send_ping(conn_list_t*);
-extern int send_basic_info(conn_list_t *);
-extern int send_termreq(conn_list_t *);
-extern int send_timeout(conn_list_t *);
-extern int send_key_request(ip_t);
-extern void send_key_changed2(void);
+extern int send_pong(conn_list_t*);
+extern int send_add_host(conn_list_t*, conn_list_t*);
+extern int send_del_host(conn_list_t*, conn_list_t*);
+extern int send_add_subnet(conn_list_t*, conn_list_t*, subnet_t*);
+extern int send_del_subnet(conn_list_t*, conn_list_t*, subnet_t*);
+extern int send_key_changed(conn_list_t*, conn_list_t*);
+extern int send_req_key(conn_list_t*, conn_list_t*);
+extern int send_ans_key(conn_list_t*, conn_list_t*, char*);
-#endif /* __TINC_PROTOCOL_H__ */
+/* Old functions */
+extern int send_tcppacket(conn_list_t *, void *, int);
+extern int notify_others(conn_list_t *, conn_list_t *, int (*function)(conn_list_t*, conn_list_t*));
+
+#endif /* __TINC_PROTOCOL_H__ */
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