Moving files, first attempt at gcrypt compatibility, more interface

[tinc] / lib / net.h

diff --git a/lib/net.h b/lib/net.h
new file mode 100644 (file)
index 0000000..2d5dae0
--- /dev/null
+++ b/lib/net.h
@@ -0,0 +1,153 @@
+/*
+    net.h -- header for net.c
+    Copyright (C) 1998-2002 Ivo Timmermans <zarq@iname.com>
+                  2000-2002 Guus Sliepen <guus@sliepen.warande.net>
+
+    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
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    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: net.h,v 1.1 2002/04/28 12:46:25 zarq Exp $
+*/
+
+#ifndef __TINC_NET_H__
+#define __TINC_NET_H__
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <sys/time.h>
+
+#include "config.h"
+
+#ifdef ENABLE_JUMBOGRAMS
+ #define MTU 9014        /* 9000 bytes payload + 14 bytes ethernet header */
+ #define MAXSIZE 9100    /* MTU + header (seqno) and trailer (CBC padding and HMAC) */
+ #define MAXBUFSIZE 9100 /* Must support TCP packets of length 9000. */
+#else
+ #define MTU 1514        /* 1500 bytes payload + 14 bytes ethernet header */
+ #define MAXSIZE 1600    /* MTU + header (seqno) and trailer (CBC padding and HMAC) */
+ #define MAXBUFSIZE 2100 /* Quite large but needed for support of keys up to 8192 bits. */
+#endif
+
+#define MAXSOCKETS 128 /* Overkill... */
+
+#define MAXQUEUELENGTH 8 /* Maximum number of packats in a single queue */
+
+typedef struct mac_t
+{
+  unsigned char x[6];
+} mac_t;
+
+typedef struct ipv4_t
+{
+  unsigned char x[4];
+} ipv4_t;
+
+typedef struct ip_mask_t {
+  ipv4_t address;
+  ipv4_t mask;
+} ip_mask_t;
+
+typedef struct ipv6_t
+{
+  unsigned short x[8];
+} ipv6_t;
+
+typedef unsigned short port_t;
+
+typedef short length_t;
+
+typedef union {
+  struct sockaddr sa;
+  struct sockaddr_in in;
+  struct sockaddr_in6 in6;
+} sockaddr_t;
+
+#ifdef SA_LEN
+#define SALEN(s) SA_LEN(&s)
+#else
+#define SALEN(s) (s.sa_family==AF_INET?sizeof(struct sockaddr_in):sizeof(struct sockaddr_in6))
+#endif
+
+typedef struct vpn_packet_t {
+  length_t len;                        /* the actual number of bytes in the `data' field */
+  int priority;                 /* priority or TOS */
+  unsigned int seqno;          /* 32 bits sequence number (network byte order of course) */
+  unsigned char data[MAXSIZE];
+} vpn_packet_t;
+
+typedef struct queue_element_t {
+  void *packet;
+  struct queue_element_t *prev;
+  struct queue_element_t *next;
+} queue_element_t;
+
+typedef struct packet_queue_t {
+  queue_element_t *head;
+  queue_element_t *tail;
+} packet_queue_t;
+
+typedef struct outgoing_t {
+  char *name;
+  int timeout;
+  struct config_t *cfg;
+  struct addrinfo *ai;
+  struct addrinfo *aip;
+} outgoing_t;
+
+typedef struct listen_socket_t {
+  int tcp;
+  int udp;
+  sockaddr_t sa;
+} listen_socket_t;
+
+extern int maxtimeout;
+extern int seconds_till_retry;
+extern int addressfamily;
+
+extern char *request_name[];
+extern char *status_text[];
+
+#include "connection.h"                /* Yes, very strange placement indeed, but otherwise the typedefs get all tangled up */
+
+extern listen_socket_t listen_socket[MAXSOCKETS];
+extern int listen_sockets;
+extern int keyexpires;
+extern int keylifetime;
+extern int do_prune;
+extern int do_purge;
+extern char *myport;
+extern time_t now;
+
+extern void retry_outgoing(outgoing_t *);
+extern void handle_incoming_vpn_data(int);
+extern void finish_connecting(connection_t *);
+extern void do_outgoing_connection(connection_t *);
+extern int handle_new_meta_connection(int);
+extern int setup_listen_socket(sockaddr_t *);
+extern int setup_vpn_in_socket(sockaddr_t *);
+extern void send_packet(struct node_t *, vpn_packet_t *);
+extern void receive_packet(struct node_t *, vpn_packet_t *);
+extern void receive_tcppacket(struct connection_t *, char *, int);
+extern void broadcast_packet(struct node_t *, vpn_packet_t *);
+extern int setup_network_connections(void);
+extern void setup_outgoing_connection(struct outgoing_t *);
+extern void try_outgoing_connections(void);
+extern void close_network_connections(void);
+extern void main_loop(void);
+extern void terminate_connection(connection_t *, int);
+extern void flush_queue(struct node_t *);
+extern int read_rsa_public_key(struct connection_t *);
+
+#endif /* __TINC_NET_H__ */