/*
protocol.h -- header for protocol.c
- Copyright (C) 1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>,
- 2000 Guus Sliepen <guus@sliepen.warande.net>
+ Copyright (C) 1999-2005 Ivo Timmermans <ivo@tinc-vpn.org>,
+ 2000-2005 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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: protocol.h,v 1.5.4.7 2000/09/11 10:05:35 guus Exp $
+ $Id$
*/
#ifndef __TINC_PROTOCOL_H__
#define __TINC_PROTOCOL_H__
-#include "net.h"
-
/* Protocol version. Different versions are incompatible,
incompatible version have different protocols.
*/
-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_7,
- PROT_CURRENT, /* protocol currently in use */
-};
+#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, 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[])(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_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*);
-
-/* 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__ */
+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;
+
+/* 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 bool send_key_changed(struct connection_t *, const struct node_t *);
+extern bool send_req_key(struct connection_t *, const struct node_t *, const struct node_t *);
+extern bool send_ans_key(struct connection_t *, const struct node_t *, const struct node_t *);
+extern bool send_tcppacket(struct connection_t *, 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__ */
projects / tinc / blobdiff