X-Git-Url: https://www.tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnet.h;h=3be9acf9be3a7da98d665f879dcf7dc32c7196da;hp=3dfc3a56d3814010c90105bd077bec60844df6b3;hb=2228b16159a7aff64e6559ee1635716154e67fe6;hpb=e20e143f1e99bdc0a7d92e97da1bd0dc40e8a83b diff --git a/src/net.h b/src/net.h index 3dfc3a56..3be9acf9 100644 --- a/src/net.h +++ b/src/net.h @@ -15,6 +15,8 @@ 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 1.9.4.13 2000/10/01 03:21:49 guus Exp $ */ #ifndef __TINC_NET_H__ @@ -45,9 +47,17 @@ #define MAXBUFSIZE 2048 /* Probably way too much, but it must fit every possible request. */ +/* flags */ +#define INDIRECTDATA 0x0001 /* Used to indicate that this host has to be reached indirect */ +#define EXPORTINDIRECTDATA 0x0002 /* Used to indicate uplink that it has to tell others to do INDIRECTDATA */ +#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]; @@ -76,9 +86,16 @@ typedef struct status_bits_t { 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:22; + 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; @@ -97,27 +114,41 @@ typedef struct enc_key_t { } 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 *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; @@ -131,6 +162,11 @@ extern int total_socket_out; 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); @@ -138,5 +174,7 @@ extern void main_loop(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__ */