+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 *, char *);
+extern bool receive_request(struct connection_t *, char *);
+extern bool check_id(const char *);
+
+extern void init_requests(void);
+extern void exit_requests(void);
+extern bool seen_request(char *);
+
+/* 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();
+extern bool send_req_key(struct node_t *);
+extern bool send_ans_key(struct node_t *);
+extern bool send_tcppacket(struct connection_t *, struct vpn_packet_t *);
+
+/* Request handlers */
+
+extern bool id_h(struct connection_t *, char *);
+extern bool metakey_h(struct connection_t *, char *);
+extern bool challenge_h(struct connection_t *, char *);
+extern bool chal_reply_h(struct connection_t *, char *);
+extern bool ack_h(struct connection_t *, char *);
+extern bool status_h(struct connection_t *, char *);
+extern bool error_h(struct connection_t *, char *);
+extern bool termreq_h(struct connection_t *, char *);
+extern bool ping_h(struct connection_t *, char *);
+extern bool pong_h(struct connection_t *, char *);
+extern bool add_subnet_h(struct connection_t *, char *);
+extern bool del_subnet_h(struct connection_t *, char *);
+extern bool add_edge_h(struct connection_t *, char *);
+extern bool del_edge_h(struct connection_t *, char *);
+extern bool key_changed_h(struct connection_t *, char *);
+extern bool req_key_h(struct connection_t *, char *);
+extern bool ans_key_h(struct connection_t *, char *);
+extern bool tcppacket_h(struct connection_t *, char *);
+extern bool control_h(struct connection_t *, char *);
+
+#endif /* __TINC_PROTOCOL_H__ */