along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: connection.h,v 1.1.2.6 2001/01/07 17:08:57 guus Exp $
+ $Id: connection.h,v 1.1.2.7 2001/01/07 20:19:29 guus Exp $
*/
#ifndef __TINC_CONNECTION_H__
int unused:18;
} status_bits_t;
-typedef struct option_bits_t {
- int unused:32;
-} option_bits_t;
+#define OPTION_INDIRECT 0x0001
+#define OPTION_TCPONLY 0x0002
typedef struct connection_t {
char *name; /* name of this connection */
char *hostname; /* the hostname of its real ip */
int protocol_version; /* used protocol */
short unsigned int port; /* port number for UDP traffic */
- long unsigned int options; /* options turned on for this connection */
+ long int options; /* options turned on for this connection */
int flags; /* his flags */
int socket; /* our udp vpn socket */
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: net.c,v 1.35.4.91 2001/01/07 17:08:58 guus Exp $
+ $Id: net.c,v 1.35.4.92 2001/01/07 20:19:29 guus Exp $
*/
#include "config.h"
cp
outpkt.len = inpkt->len;
- /* Encrypt the packet */
+ /* Encrypt the packet. FIXME: we should use CBC, not CFB. */
EVP_EncryptInit(&ctx, cl->cipher_pkttype, cl->cipher_pktkey, cl->cipher_pktkey + cl->cipher_pkttype->key_len);
EVP_EncryptUpdate(&ctx, outpkt.data, &outlen, inpkt->data, inpkt->len);
outlen = outpkt.len+2;
memcpy(&outpkt, inpkt, outlen);
*/
-
+cp
+ return receive_packet(cl, &outpkt);
+}
+
+int receive_packet(connection_t *cl, vpn_packet_t *packet)
+{
if(debug_lvl >= DEBUG_TRAFFIC)
syslog(LOG_ERR, _("Writing packet of %d bytes to tap device"),
- outpkt.len);
+ packet->len);
/* Fix mac address */
- memcpy(outpkt.data, mymac.net.mac.address.x, 6);
+ memcpy(packet->data, mymac.net.mac.address.x, 6);
if(taptype == TAP_TYPE_TUNTAP)
{
- if(write(tap_fd, outpkt.data, outpkt.len) < 0)
+ if(write(tap_fd, packet->data, packet->len) < 0)
syslog(LOG_ERR, _("Can't write to tun/tap device: %m"));
else
- total_tap_out += outpkt.len;
+ total_tap_out += packet->len;
}
else /* ethertap */
{
- if(write(tap_fd, outpkt.data - 2, outpkt.len + 2) < 0)
+ if(write(tap_fd, packet->data - 2, packet->len + 2) < 0)
syslog(LOG_ERR, _("Can't write to ethertap device: %m"));
else
- total_tap_out += outpkt.len + 2;
+ total_tap_out += packet->len + 2;
}
cp
return 0;
return 0;
}
- /* If we ourselves have indirectdata flag set, we should send only to our uplink! */
-
- /* FIXME - check for indirection and reprogram it The Right Way(tm) this time. */
-
if(!cl->status.validkey)
{
if(debug_lvl >= DEBUG_TRAFFIC)
return 0;
}
- /* can we send it? can we? can we? huh? */
+ /* Check if it has to go via UDP or TCP... */
cp
- return xsend(cl, packet);
+ if(cl->options & OPTION_TCPONLY)
+ return send_tcppacket(cl, packet);
+ else
+ return xsend(cl, packet);
}
void flush_queue(connection_t *cl)
cp
myself = new_connection();
- asprintf(&myself->hostname, "MYSELF"); /* FIXME? Do hostlookup on ourselves? */
+ asprintf(&myself->hostname, "MYSELF");
myself->flags = 0;
myself->protocol_version = PROT_CURRENT;
keyexpires = time(NULL) + keylifetime;
cp
+ /* Check some options */
+
+ if((cfg = get_config_val(config, config_indirectdata)))
+ {
+ if(cfg->data.val == stupid_true)
+ myself->options |= OPTION_INDIRECT;
+ }
+
+ if((cfg = get_config_val(config, config_tcponly)))
+ {
+ if(cfg->data.val == stupid_true)
+ myself->options |= OPTION_TCPONLY;
+ }
/* Activate ourselves */
myself->status.active = 1;
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: net.h,v 1.9.4.26 2001/01/07 17:09:01 guus Exp $
+ $Id: net.h,v 1.9.4.27 2001/01/07 20:19:31 guus Exp $
*/
#ifndef __TINC_NET_H__
extern int str2opt(const char *);
extern char *opt2str(int);
extern int send_packet(ip_t, vpn_packet_t *);
+extern int receive_packet(connection_t *, vpn_packet_t *);
extern int setup_network_connections(void);
extern void close_network_connections(void);
extern void main_loop(void);
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: protocol.c,v 1.28.4.74 2001/01/07 17:09:02 guus Exp $
+ $Id: protocol.c,v 1.28.4.75 2001/01/07 20:19:31 guus Exp $
*/
#include "config.h"
int ack_h(connection_t *cl)
{
+ config_t const *cfg;
connection_t *old, *p;
subnet_t *subnet;
avl_node_t *node, *node2;
if(!cl->status.outgoing)
send_ack(cl);
+ /* Check some options */
+
+ if((cfg = get_config_val(cl->config, config_indirectdata)))
+ {
+ if(cfg->data.val == stupid_true)
+ cl->options |= OPTION_INDIRECT;
+ }
+
+ if((cfg = get_config_val(cl->config, config_tcponly)))
+ {
+ if(cfg->data.val == stupid_true)
+ cl->options |= OPTION_TCPONLY;
+ }
+
/* Send him our subnets */
for(node = myself->subnet_tree->head; node; node = node->next)
{
int x;
char *netstr;
+ char *owner;
cp
+ if(cl->options & OPTION_INDIRECT)
+ owner = myself->name;
+ else
+ owner = subnet->owner->name;
+
x = send_request(cl, "%d %s %s", ADD_SUBNET,
- subnet->owner->name, netstr = net2str(subnet));
+ owner, netstr = net2str(subnet));
free(netstr);
cp
return x;
{
int x;
char *netstr;
+ char *owner;
cp
- netstr = net2str(subnet);
- x = send_request(cl, "%d %s %s", DEL_SUBNET, subnet->owner->name, netstr);
+ if(cl->options & OPTION_INDIRECT)
+ owner = myself->name;
+ else
+ owner = subnet->owner->name;
+
+ x = send_request(cl, "%d %s %s", DEL_SUBNET, owner, netstr = net2str(subnet));
free(netstr);
cp
return x;
int send_add_host(connection_t *cl, connection_t *other)
{
cp
- return send_request(cl, "%d %s %lx:%d %lx", ADD_HOST,
+ if(!(cl->options & OPTION_INDIRECT))
+ return send_request(cl, "%d %s %lx:%d %lx", ADD_HOST,
other->name, other->address, other->port, other->options);
}
int send_del_host(connection_t *cl, connection_t *other)
{
cp
- return send_request(cl, "%d %s %lx:%d %lx", DEL_HOST,
+ if(!(cl->options & OPTION_INDIRECT))
+ return send_request(cl, "%d %s %lx:%d %lx", DEL_HOST,
other->name, other->address, other->port, other->options);
}
return 0;
}
-/* Keepalive routines - FIXME: needs a closer look */
-
int send_ping(connection_t *cl)
{
cp
{
p = (connection_t *)node->data;
if(p != cl && p->status.meta && p->status.active)
- send_request(p, "%d %s", KEY_CHANGED, from->name);
+ if(!(cl->options & OPTION_INDIRECT) || from == myself)
+ send_request(p, "%d %s", KEY_CHANGED, from->name);
}
cp
return 0;
return 0;
}
+int send_tcppacket(connection_t *cl, vpn_packet_t *packet)
+{
+ int x;
+
+ x = send_request(cl->nexthop, "%d %hd", PACKET, packet->len);
+
+ if(x)
+ return x;
+
+ return send_meta(cl->nexthop, packet->data, packet->len);
+}
+
+int tcppacket_h(connection_t *cl)
+{
+ vpn_packet_t packet;
+ char *p;
+ int todo, x;
+
+ if(sscanf(cl->buffer, "%*d %hd", packet.len) != 1)
+ {
+ syslog(LOG_ERR, _("Got bad PACKET from %s (%s)"), cl->name, cl->hostname);
+ return -1;
+ }
+
+ /* Evil hack. */
+
+ p = packet.data;
+ todo = packet.len;
+
+ while(todo)
+ {
+ x = read(cl->meta_socket, p, todo);
+ if(x<0)
+ {
+ syslog(LOG_ERR, _("Error during reception of PACKET from %s (%s): %m"), cl->name, cl->hostname);
+ return -1;
+ }
+
+ todo -= x;
+ p += x;
+ }
+
+ return receive_packet(cl, &packet);
+}
+
/* Jumptable for the request handlers */
int (*request_handlers[])(connection_t*) = {
add_host_h, del_host_h,
add_subnet_h, del_subnet_h,
key_changed_h, req_key_h, ans_key_h,
+ tcppacket_h,
};
/* Request names */
"ADD_HOST", "DEL_HOST",
"ADD_SUBNET", "DEL_SUBNET",
"KEY_CHANGED", "REQ_KEY", "ANS_KEY",
+ "PACKET",
};
/* Status strings */
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: protocol.h,v 1.5.4.18 2001/01/07 17:09:06 guus Exp $
+ $Id: protocol.h,v 1.5.4.19 2001/01/07 20:19:35 guus Exp $
*/
#ifndef __TINC_PROTOCOL_H__
ADD_HOST, DEL_HOST,
ADD_SUBNET, DEL_SUBNET,
KEY_CHANGED, REQ_KEY, ANS_KEY,
+ PACKET,
LAST /* Guardian for the highest request number */
};
extern int send_key_changed(connection_t*, connection_t*);
extern int send_req_key(connection_t*, connection_t*);
extern int send_ans_key(connection_t*, connection_t*, char*);
+extern int send_tcppacket(connection_t *, vpn_packet_t *);
/* Old functions */
-extern int send_tcppacket(connection_t *, void *, int);
extern int notify_others(connection_t *, connection_t *, int (*function)(connection_t*, connection_t*));
extern int receive_request(connection_t *);
extern int check_id(char *);
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