+#ifndef MESHLINK_PROTOCOL_H
+#define MESHLINK_PROTOCOL_H
+
/*
protocol.h -- header for protocol.c
- Copyright (C) 1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>,
- 2000 Guus Sliepen <guus@sliepen.warande.net>
+ Copyright (C) 2014, 2017 Guus Sliepen <guus@meshlink.io>
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 1.5.4.15 2000/11/03 22:35:12 zarq 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 "ecdsa.h"
-#include "net.h"
-#include "subnet.h"
+/* Protocol version. Different major versions are incompatible. */
-/* Protocol version. Different versions are incompatible,
- incompatible version have different protocols.
- */
+#define PROT_MAJOR 17
+#define PROT_MINOR 3 /* Should not exceed 255! */
+
+/* Silly Windows */
-#define PROT_CURRENT 8
+#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[])(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*);
-extern int send_metakey(conn_list_t*);
-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*, subnet_t*);
-extern int send_del_subnet(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*));
-extern int receive_request(conn_list_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,
+ /* Tinc 1.1 requests */
+ CONTROL,
+ REQ_PUBKEY, ANS_PUBKEY,
+ REQ_SPTPS,
+ LAST /* Guardian for the highest request number */
+} request_t;
+
+typedef struct past_request_t {
+ const char *request;
+ time_t firstseen;
+} past_request_t;
+
+/* 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"
+
+/* Basic functions */
+
+bool send_request(struct meshlink_handle *mesh, struct connection_t *, const struct submesh_t *s, const char *, ...) __attribute__((__format__(printf, 4, 5)));
+void forward_request(struct meshlink_handle *mesh, struct connection_t *, const struct submesh_t *, const char *);
+bool receive_request(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool check_id(const char *);
+
+void init_requests(struct meshlink_handle *mesh);
+void exit_requests(struct meshlink_handle *mesh);
+bool seen_request(struct meshlink_handle *mesh, const char *);
+
+/* Requests */
+
+bool send_id(struct meshlink_handle *mesh, struct connection_t *);
+bool send_ack(struct meshlink_handle *mesh, struct connection_t *);
+bool send_ping(struct meshlink_handle *mesh, struct connection_t *);
+bool send_pong(struct meshlink_handle *mesh, struct connection_t *);
+bool send_add_edge(struct meshlink_handle *mesh, struct connection_t *, const struct edge_t *, int contradictions);
+bool send_del_edge(struct meshlink_handle *mesh, struct connection_t *, const struct edge_t *, int contradictions);
+bool send_req_key(struct meshlink_handle *mesh, struct node_t *);
+
+/* Request handlers */
+
+bool id_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool ack_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool status_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool error_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool termreq_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool ping_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool pong_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool add_edge_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool del_edge_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool key_changed_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool req_key_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool ans_key_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+bool tcppacket_h(struct meshlink_handle *mesh, struct connection_t *, const char *);
+
+#endif