X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fprotocol.h;h=a055f28a1c648e2e1388097d2125fbe6c23db717;hp=79bda43c68e7d33ee40a6ef4ef3255868257993e;hb=57bc9a1835bcb6a8df7963ee4ab04fde34f28eaf;hpb=408ca91766088b6c2d38e198b0692bf394b41248 diff --git a/src/protocol.h b/src/protocol.h index 79bda43c..a055f28a 100644 --- a/src/protocol.h +++ b/src/protocol.h @@ -1,7 +1,10 @@ +#ifndef TINC_PROTOCOL_H +#define TINC_PROTOCOL_H + /* protocol.h -- header for protocol.c - Copyright (C) 1999,2000 Ivo Timmermans , - 2000 Guus Sliepen + Copyright (C) 1999-2005 Ivo Timmermans, + 2000-2015 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 @@ -13,63 +16,105 @@ 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: protocol.h,v 1.5.4.16 2000/11/20 19:12:16 guus Exp $ + 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., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_PROTOCOL_H__ -#define __TINC_PROTOCOL_H__ - -#include "net.h" -#include "subnet.h" - /* Protocol version. Different versions are incompatible, incompatible version have different protocols. */ -#define PROT_CURRENT 8 +#define PROT_CURRENT 17 + +/* Silly Windows */ + +#ifdef ERROR +#undef ERROR +#endif /* Request numbers */ -enum { - ALL = -1, /* Guardian for allow_request */ - ID = 0, CHALLENGE, CHAL_REPLY, METAKEY, 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[])(connection_t*); - -extern int send_id(connection_t*); -extern int send_challenge(connection_t*); -extern int send_chal_reply(connection_t*); -extern int send_metakey(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_host(connection_t*, connection_t*); -extern int send_del_host(connection_t*, connection_t*); -extern int send_add_subnet(connection_t*, subnet_t*); -extern int send_del_subnet(connection_t*, subnet_t*); -extern int send_key_changed(connection_t*, connection_t*); -extern int send_req_key(connection_t*, connection_t*); -extern int send_ans_key(connection_t*, connection_t*, char*); - -/* Old functions */ - -extern int send_tcppacket(connection_t *, void *, int); -extern int notify_others(connection_t *, connection_t *, int (*function)(connection_t*, connection_t*)); -extern int receive_request(connection_t *); -extern int check_id(char *); - -#endif /* __TINC_PROTOCOL_H__ */ +typedef enum request_t { + PROXY = -2, + ALL = -1, /* Guardian for allow_request */ + ID = 0, METAKEY, CHALLENGE, CHAL_REPLY, ACK, + STATUS, ERROR, TERMREQ, + PING, PONG, + ADD_SUBNET, DEL_SUBNET, + ADD_EDGE, DEL_EDGE, + KEY_CHANGED, REQ_KEY, ANS_KEY, + PACKET, + LAST /* Guardian for the highest request number */ +} request_t; + +typedef struct past_request_t { + char *request; + time_t firstseen; +} past_request_t; + +extern bool tunnelserver; +extern bool strictsubnets; + +/* Maximum size of strings in a request. + * scanf terminates %2048s with a NUL character, + * but the NUL character can be written after the 2048th non-NUL character. + */ + +#define MAX_STRING_SIZE 2049 +#define MAX_STRING "%2048s" + +#include "edge.h" +#include "net.h" +#include "node.h" +#include "subnet.h" + +/* Basic functions */ + +extern bool send_request(struct connection_t *c, const char *format, ...) __attribute__((__format__(printf, 2, 3))); +extern void forward_request(struct connection_t *c); +extern bool receive_request(struct connection_t *c); +extern bool check_id(const char *name); + +extern void init_requests(void); +extern void exit_requests(void); +extern bool seen_request(char *request); +extern void age_past_requests(void); + +/* Requests */ + +extern bool send_id(struct connection_t *c); +extern bool send_metakey(struct connection_t *c); +extern bool send_challenge(struct connection_t *c); +extern bool send_chal_reply(struct connection_t *c); +extern bool send_ack(struct connection_t *c); +extern bool send_ping(struct connection_t *c); +extern bool send_pong(struct connection_t *c); +extern bool send_add_subnet(struct connection_t *c, const struct subnet_t *subnet); +extern bool send_del_subnet(struct connection_t *c, const struct subnet_t *subnet); +extern bool send_add_edge(struct connection_t *c, const struct edge_t *e); +extern bool send_del_edge(struct connection_t *c, const struct edge_t *e); +extern void send_key_changed(void); +extern bool send_req_key(struct node_t *n); +extern bool send_ans_key(struct node_t *n); +extern bool send_tcppacket(struct connection_t *c, const struct vpn_packet_t *packet); + +/* Request handlers */ + +extern bool id_h(struct connection_t *c); +extern bool metakey_h(struct connection_t *c); +extern bool challenge_h(struct connection_t *c); +extern bool chal_reply_h(struct connection_t *c); +extern bool ack_h(struct connection_t *c); +extern bool ping_h(struct connection_t *c); +extern bool pong_h(struct connection_t *c); +extern bool add_subnet_h(struct connection_t *c); +extern bool del_subnet_h(struct connection_t *c); +extern bool add_edge_h(struct connection_t *c); +extern bool del_edge_h(struct connection_t *c); +extern bool key_changed_h(struct connection_t *c); +extern bool req_key_h(struct connection_t *c); +extern bool ans_key_h(struct connection_t *c); +extern bool tcppacket_h(struct connection_t *c); + +#endif