/*
protocol.h -- header for protocol.c
- Copyright (C) 1999-2001 Ivo Timmermans <itimmermans@bigfoot.com>,
- 2000,2001 Guus Sliepen <guus@sliepen.warande.net>
+ Copyright (C) 1999-2005 Ivo Timmermans,
+ 2000-2009 Guus Sliepen <guus@tinc-vpn.org>
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
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 1.5.4.21 2001/05/24 21:30:36 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 10
+#define PROT_CURRENT 17
+
+/* Silly Windows */
+
+#ifdef ERROR
+#undef ERROR
+#endif
/* Request numbers */
-enum {
- ALL = -1, /* Guardian for allow_request */
- ID = 0, METAKEY, CHALLENGE, CHAL_REPLY,
- STATUS, ERROR, TERMREQ,
- PING, PONG,
- ADD_HOST, DEL_HOST,
- ADD_SUBNET, DEL_SUBNET,
- KEY_CHANGED, REQ_KEY, ANS_KEY,
- PACKET,
- LAST /* Guardian for the highest request number */
-};
-
-/* Maximum size of strings in a request */
-
-#define MAX_STRING_SIZE 1024
-#define MAX_STRING "%1024s"
-
-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_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*);
-extern int send_tcppacket(connection_t *, vpn_packet_t *);
-
-/* Old functions */
-
-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 {
+ 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 *, const char *, ...) __attribute__ ((__format__(printf, 2, 3)));
+extern void forward_request(struct connection_t *);
+extern bool receive_request(struct connection_t *);
+extern bool check_id(const char *);
+
+extern void init_requests(void);
+extern void exit_requests(void);
+extern bool seen_request(char *);
+extern void age_past_requests(void);
+
+/* Requests */
+
+extern bool send_id(struct connection_t *);
+extern bool send_metakey(struct connection_t *);
+extern bool send_challenge(struct connection_t *);
+extern bool send_chal_reply(struct connection_t *);
+extern bool send_ack(struct connection_t *);
+extern bool send_status(struct connection_t *, int, const char *);
+extern bool send_error(struct connection_t *, int,const char *);
+extern bool send_termreq(struct connection_t *);
+extern bool send_ping(struct connection_t *);
+extern bool send_pong(struct connection_t *);
+extern bool send_add_subnet(struct connection_t *, const struct subnet_t *);
+extern bool send_del_subnet(struct connection_t *, const struct subnet_t *);
+extern bool send_add_edge(struct connection_t *, const struct edge_t *);
+extern bool send_del_edge(struct connection_t *, const struct edge_t *);
+extern void send_key_changed(void);
+extern bool send_req_key(struct node_t *);
+extern bool send_ans_key(struct node_t *);
+extern bool send_tcppacket(struct connection_t *, const struct vpn_packet_t *);
+
+/* Request handlers */
+
+extern bool id_h(struct connection_t *);
+extern bool metakey_h(struct connection_t *);
+extern bool challenge_h(struct connection_t *);
+extern bool chal_reply_h(struct connection_t *);
+extern bool ack_h(struct connection_t *);
+extern bool status_h(struct connection_t *);
+extern bool error_h(struct connection_t *);
+extern bool termreq_h(struct connection_t *);
+extern bool ping_h(struct connection_t *);
+extern bool pong_h(struct connection_t *);
+extern bool add_subnet_h(struct connection_t *);
+extern bool del_subnet_h(struct connection_t *);
+extern bool add_edge_h(struct connection_t *);
+extern bool del_edge_h(struct connection_t *);
+extern bool key_changed_h(struct connection_t *);
+extern bool req_key_h(struct connection_t *);
+extern bool ans_key_h(struct connection_t *);
+extern bool tcppacket_h(struct connection_t *);
+
+#endif /* __TINC_PROTOCOL_H__ */
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