/*
net.h -- header for net.c
- Copyright (C) 1998,99 Ivo Timmermans <zarq@iname.com>
+ Copyright (C) 1998,1999,2000 Ivo Timmermans <zarq@iname.com>
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
#define MAXSIZE 1700 /* should be a bit more than the MTU for the tapdevice */
#define MTU 1600
-#define MAX_PASSPHRASE_SIZE 2000 /* 2kb is really waaaay too much. nobody's
- gonna need a 16 kbit passphrase */
-
#define MAC_ADDR_S "%02x:%02x:%02x:%02x:%02x:%02x"
#define MAC_ADDR_V(x) ((unsigned char*)&(x))[0],((unsigned char*)&(x))[1], \
((unsigned char*)&(x))[2],((unsigned char*)&(x))[3], \
((unsigned char*)&(x))[1],((unsigned char*)&(x))[0]
#endif
+#define MAXBUFSIZE 2048 /* Probably way too much, but it must fit every possible request. */
+
typedef unsigned long ip_t;
typedef short length_t;
} real_packet_t;
typedef struct passphrase_t {
- unsigned char type;
unsigned short len;
- unsigned char phrase[MAX_PASSPHRASE_SIZE];
+ unsigned char *phrase;
} passphrase_t;
typedef struct status_bits_t {
typedef struct queue_element_t {
void *packet;
+ struct queue_element_t *prev;
struct queue_element_t *next;
} queue_element_t;
ip_t vpn_mask; /* his vpn network address */
ip_t real_ip; /* his real (internet) ip */
char *hostname; /* the hostname of its real ip */
- short int port; /* his portnumber */
+ short unsigned int port; /* his portnumber */
int socket; /* our udp vpn socket */
int meta_socket; /* our tcp meta socket */
- unsigned char protocol_version; /* used protocol */
+ int protocol_version; /* used protocol */
status_bits_t status; /* status info */
passphrase_t *pp; /* encoded passphrase */
packet_queue_t *sq; /* pending outgoing packets */
valid key to be decrypted with) */
enc_key_t *public_key; /* the other party's public key */
enc_key_t *key; /* encrypt with this key */
+ char buffer[MAXBUFSIZE+1]; /* metadata input buffer */
+ int buflen; /* bytes read into buffer */
+ int reqlen; /* length of first request in buffer */
+ time_t last_ping_time; /* last time we saw some activity from the other end */
+ int want_ping; /* 0 if there's no need to check for activity */
struct conn_list_t *nexthop; /* nearest meta-hop in this direction */
struct conn_list_t *next; /* after all, it's a list of connections */
} conn_list_t;
extern conn_list_t *myself;
extern int send_packet(ip_t, vpn_packet_t *);
-extern int send_broadcast(conn_list_t *, vpn_packet_t *);
extern int setup_network_connections(void);
extern void close_network_connections(void);
extern void main_loop(void);