X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fprotocol.h;h=1fd760a2ce17234f3cbd597443ee955036be4dd7;hp=7e0e898850ca29c7f0b1f642e7b645bacbbcf31a;hb=698d6ddac6ab32d5a4b802941b02232793442684;hpb=b6997b0050e78a2f2e517beba3ff01d9232b3d1f diff --git a/src/protocol.h b/src/protocol.h index 7e0e8988..1fd760a2 100644 --- a/src/protocol.h +++ b/src/protocol.h @@ -1,6 +1,7 @@ /* protocol.h -- header for protocol.c - Copyright (C) 1999,2000 Ivo Timmermans + Copyright (C) 1999-2001 Ivo Timmermans , + 2000,2001 Guus Sliepen 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 @@ -16,67 +17,99 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id: protocol.h,v 1.5.4.5 2000/08/07 16:27:29 guus Exp $ + $Id: protocol.h,v 1.5.4.32 2002/09/04 08:33:08 guus Exp $ */ #ifndef __TINC_PROTOCOL_H__ #define __TINC_PROTOCOL_H__ #include "net.h" +#include "node.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_6, - PROT_CURRENT, /* protocol currently in use */ -}; +/* Protocol version. Different versions are incompatible, + incompatible version have different protocols. + */ + +#define PROT_CURRENT 16 + +/* 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 */ - PACKET = 110, /* TCP tunneled network packet */ - 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, METAKEY, CHALLENGE, CHAL_REPLY, ACK, + STATUS, ERROR, TERMREQ, + PING, PONG, + ADD_SUBNET, DEL_SUBNET, + ADD_NODE, DEL_NODE, + KEY_CHANGED, REQ_KEY, ANS_KEY, + PACKET, + LAST /* Guardian for the highest request number */ }; -extern int (*request_handlers[256])(conn_list_t*); +typedef struct past_request_t { + char *request; + time_t firstseen; +} past_request_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_changed_all(void); -extern int send_del_host(conn_list_t *, conn_list_t *); -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*)); +/* Maximum size of strings in a request */ -#endif /* __TINC_PROTOCOL_H__ */ +#define MAX_STRING_SIZE 2048 +#define MAX_STRING "%2048s" + +/* Basic functions */ + +extern int send_request(connection_t*, const char*, ...); +extern int receive_request(connection_t *); +extern int check_id(char *); +extern void init_requests(void); +extern void exit_requests(void); +extern int seen_request(char *); +extern void age_past_requests(void); +/* Requests */ + +extern int send_id(connection_t *); +extern int send_metakey(connection_t *); +extern int send_challenge(connection_t *); +extern int send_chal_reply(connection_t *); +extern int send_ack(connection_t *); +extern int send_status(connection_t *, int, char *); +extern int send_error(connection_t *, int, char *); +extern int send_termreq(connection_t *); +extern int send_ping(connection_t *); +extern int send_pong(connection_t *); +extern int send_add_subnet(connection_t *, subnet_t *); +extern int send_del_subnet(connection_t *, subnet_t *); +extern int send_add_node(connection_t *, node_t *); +extern int send_del_node(connection_t *, node_t *); +extern int send_key_changed(connection_t *, node_t *); +extern int send_req_key(connection_t *, node_t *, node_t *); +extern int send_ans_key(connection_t *, node_t *, node_t *); +extern int send_tcppacket(connection_t *, vpn_packet_t *); + +/* Request handlers */ + +extern int (*request_handlers[])(connection_t *); + +extern int id_h(connection_t *); +extern int metakey_h(connection_t *); +extern int challenge_h(connection_t *); +extern int chal_reply_h(connection_t *); +extern int ack_h(connection_t *); +extern int status_h(connection_t *); +extern int error_h(connection_t *); +extern int termreq_h(connection_t *); +extern int ping_h(connection_t *); +extern int pong_h(connection_t *); +extern int add_subnet_h(connection_t *); +extern int del_subnet_h(connection_t *); +extern int add_node_h(connection_t *); +extern int del_node_h(connection_t *); +extern int key_changed_h(connection_t *); +extern int req_key_h(connection_t *); +extern int ans_key_h(connection_t *); +extern int tcppacket_h(connection_t *); + +#endif /* __TINC_PROTOCOL_H__ */