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Only accept an ADD_HOST request for a host that already exists in our conn_list if the nexthop field matches the sender. This is a workaround for older clients.

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Ivo Timmermans 2000-05-30 21:36:16 +00:00
parent e7f22d2f5f
commit 17fa07510a
1 changed files with 9 additions and 3 deletions
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12
src/protocol.c
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@ -17,7 +17,7 @@
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id: protocol.c,v 1.27 2000/05/29 23:40:05 guus Exp $
$Id: protocol.c,v 1.28 2000/05/30 21:36:16 zarq Exp $
*/
#include "config.h"
@ -570,7 +570,8 @@ int add_host_h(conn_list_t *cl)
unsigned short port;
conn_list_t *ncn, *fw;
cp
if(!cl->status.active) return -1;
if(!cl->status.active)
return -1;
if(sscanf(cl->buffer, "%*d %lx %lx/%lx:%hx", &real_ip, &vpn_ip, &vpn_mask, &port) != 4)
{
syslog(LOG_ERR, _("got bad ADD_HOST request: %s"), cl->buffer);
@ -588,7 +589,12 @@ cp
*/
if((fw = lookup_conn(vpn_ip)))
{
notify_others(fw, cl, send_add_host);
if(fw->nexthop == cl)
notify_others(fw, cl, send_add_host);
else
if(debug_lvl > 1)
syslog(LOG_DEBUG, _("Invalid add_host request from " IP_ADDR_S),
IP_ADDR_V(cl->vpn_ip));
return 0;
}