along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: protocol.c,v 1.28.4.105 2001/09/01 12:02:39 guus Exp $
+ $Id: protocol.c,v 1.28.4.106 2001/09/24 14:12:00 guus Exp $
*/
#include "config.h"
cl->allow_request = ALL;
cl->nexthop = cl;
+ cl->lastbutonehop = myself;
cl->cipher_pkttype = EVP_bf_cbc();
cl->cipher_pktkeylength = cl->cipher_pkttype->key_len + cl->cipher_pkttype->iv_len;
int send_add_host(connection_t *cl, connection_t *other)
{
cp
- return send_request(cl, "%d %s %lx:%d %lx", ADD_HOST,
- other->name, other->address, other->port, other->options);
+ return send_request(cl, "%d %s %lx:%d %lx %s", ADD_HOST,
+ other->name, other->address, other->port, other->options, other->lastbutonehop->name);
}
int add_host_h(connection_t *cl)
{
connection_t *old, *new, *p;
- char name[MAX_STRING_SIZE];
+ char name[MAX_STRING_SIZE], lastbutone[MAX_STRING_SIZE];
avl_node_t *node;
cp
new = new_connection();
- if(sscanf(cl->buffer, "%*d "MAX_STRING" %lx:%hd %lx", name, &new->address, &new->port, &new->options) != 4)
+ if(sscanf(cl->buffer, "%*d "MAX_STRING" %lx:%hd %lx "MAX_STRING, name, &new->address, &new->port, &new->options, lastbutone) != 5)
{
syslog(LOG_ERR, _("Got bad ADD_HOST from %s (%s)"), cl->name, cl->hostname);
return -1;
return -1;
}
+ if(check_id(lastbutone))
+ {
+ syslog(LOG_ERR, _("Got bad ADD_HOST from %s (%s): invalid lastbutone name"), cl->name, cl->hostname);
+ free_connection(new);
+ return -1;
+ }
+
/* Check if somebody tries to add ourself */
if(!strcmp(name, myself->name))
{
- syslog(LOG_ERR, _("Warning: got ADD_HOST from %s (%s) for ourself, restarting"), cl->name, cl->hostname);
- sighup = 1;
+ syslog(LOG_ERR, _("Got ADD_HOST from %s (%s) for ourself!"), cl->name, cl->hostname);
free_connection(new);
- return 0;
+ return -1;
}
/* Fill in more of the new connection structure */
new->hostname = hostlookup(htonl(new->address));
+ new->lastbutonehop = lookup_id(lastbutone);
+
+ if(!new->lastbutonehop)
+ {
+ syslog(LOG_ERR, _("Got bad ADD_HOST from %s (%s): unknown lastbutone"), cl->name, cl->hostname);
+ free_connection(new);
+ return -1;
+ }
+
/* Check if the new host already exists in the connnection list */
if((old = lookup_id(name)))
int send_del_host(connection_t *cl, connection_t *other)
{
cp
- return send_request(cl, "%d %s %lx:%d %lx", DEL_HOST,
- other->name, other->address, other->port, other->options);
+ return send_request(cl, "%d %s %lx:%d %lx %s", DEL_HOST,
+ other->name, other->address, other->port, other->options, other->lastbutonehop->name);
}
int del_host_h(connection_t *cl)
{
- char name[MAX_STRING_SIZE];
+ char name[MAX_STRING_SIZE], lastbutone[MAX_STRING_SIZE];
ipv4_t address;
port_t port;
long int options;
connection_t *old, *p;
avl_node_t *node;
cp
- if(sscanf(cl->buffer, "%*d "MAX_STRING" %lx:%hd %lx", name, &address, &port, &options) != 4)
+ if(sscanf(cl->buffer, "%*d "MAX_STRING" %lx:%hd %lx "MAX_STRING, name, &address, &port, &options, lastbutone) != 5)
{
syslog(LOG_ERR, _("Got bad DEL_HOST from %s (%s)"),
cl->name, cl->hostname);
return -1;
}
+ if(check_id(lastbutone))
+ {
+ syslog(LOG_ERR, _("Got bad DEL_HOST from %s (%s): invalid lastbutone name"), cl->name, cl->hostname);
+ return -1;
+ }
+
/* Check if somebody tries to delete ourself */
if(!strcmp(name, myself->name))
{
- syslog(LOG_ERR, _("Warning: got DEL_HOST from %s (%s) for ourself, restarting"),
+ syslog(LOG_ERR, _("Got DEL_HOST from %s (%s) for ourself!"),
cl->name, cl->hostname);
- sighup = 1;
- return 0;
+ return -1;
}
/* Check if the deleted host already exists in the connnection list */
/* Check if the rest matches */
- if(address!=old->address || port!=old->port || options!=old->options || cl!=old->nexthop)
+ if(address!=old->address || port!=old->port || options!=old->options || cl!=old->nexthop || strcmp(lastbutone, old->lastbutonehop->name))
{
syslog(LOG_WARNING, _("Got DEL_HOST from %s (%s) for %s which doesn't match"), cl->name, cl->hostname, old->name);
return 0;