along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: net.h,v 1.9.4.7 2000/08/07 14:52:15 guus Exp $
+ $Id: net.h,v 1.9.4.13 2000/10/01 03:21:49 guus Exp $
*/
#ifndef __TINC_NET_H__
#define TCPONLY 0x0004 /* Tells sender to send packets over TCP instead of UDP (for firewalls) */
typedef unsigned long ip_t;
+typedef unsigned short port_t;
typedef short length_t;
+struct conn_list_t;
+
typedef struct vpn_packet_t {
length_t len; /* the actual number of bytes in the `data' field */
unsigned char data[MAXSIZE];
int validkey:1; /* 1 if we currently have a valid key for him */
int waitingforkey:1; /* 1 if we already sent out a request */
int dataopen:1; /* 1 if we have a valid UDP connection open */
- int unused:21;
+ int encryptout:1; /* 1 if we can encrypt outgoing traffic */
+ int encryptin:1; /* 1 if we have to decrypt incoming traffic */
+ int encrypted:1;
+ int unused:18;
} status_bits_t;
+typedef struct option_bits_t {
+ int unused:32;
+} option_bits_t;
+
typedef struct queue_element_t {
void *packet;
struct queue_element_t *prev;
} enc_key_t;
typedef struct conn_list_t {
- ip_t vpn_ip; /* his vpn ip */
- ip_t vpn_mask; /* his vpn network address */
+ char *name; /* name of this connection */
ip_t real_ip; /* his real (internet) ip */
- char *real_hostname; /* the hostname of its real ip */
- char *vpn_hostname; /* the hostname of the vpn ip */
+ char *hostname; /* the hostname of its real ip */
short unsigned int port; /* his portnumber */
+ int protocol_version; /* used protocol */
+ int options; /* options turned on for this connection */
+
int flags; /* his flags */
int socket; /* our udp vpn socket */
int meta_socket; /* our tcp meta socket */
- int protocol_version; /* used protocol */
status_bits_t status; /* status info */
- passphrase_t *pp; /* encoded passphrase */
packet_queue_t *sq; /* pending outgoing packets */
packet_queue_t *rq; /* pending incoming packets (they have no
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 */
+ enc_key_t *datakey; /* encrypt data packets with this key */
+ enc_key_t *rsakey;
+
+ char *buffer; /* metadata input buffer */
int buflen; /* bytes read into buffer */
int reqlen; /* length of first request in buffer */
+ int allow_request; /* defined if there's only one request possible */
+
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 */
+ int want_ping; /* 0 if there's no need to check for activity. Shouldn't this go into status? (GS) */
+
+ char *mychallenge; /* challenge we received from him */
+ char *hischallenge; /* challenge we sent to him */
+
+ struct conn_list_t *nexthop; /* nearest meta-hop in this direction, will be changed to myuplink (GS) */
+ struct conn_list_t *hisuplink; /* his nearest meta-hop in our direction */
+ struct conn_list_t *myuplink; /* our nearest meta-hop in his direction */
+
+ struct subnet_t *subnets; /* Pointer to a list of subnets belonging to this connection */
+
struct conn_list_t *next; /* after all, it's a list of connections */
} conn_list_t;
extern conn_list_t *conn_list;
extern conn_list_t *myself;
+extern char *request_name[256];
+extern char *status_text[10];
+
+extern int str2opt(const char *);
+extern char *opt2str(int);
extern int send_packet(ip_t, vpn_packet_t *);
extern int setup_network_connections(void);
extern void close_network_connections(void);
extern int setup_vpn_connection(conn_list_t *);
extern void terminate_connection(conn_list_t *);
extern void flush_queues(conn_list_t*);
+extern int xrecv(conn_list_t *, void *);
+extern void add_queue(packet_queue_t **, void *, size_t);
#endif /* __TINC_NET_H__ */
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