along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: connection.c,v 1.1.2.7 2001/01/05 23:53:49 guus Exp $
+ $Id: connection.c,v 1.1.2.8 2001/01/07 15:25:40 guus Exp $
*/
#include "config.h"
#include <syslog.h>
#include <avl_tree.h>
+#include <list.h>
#include "net.h" /* Don't ask. */
#include "netutl.h"
connection_t *p = (connection_t *)xmalloc_and_zero(sizeof(*p));
cp
p->subnet_tree = avl_alloc_tree((avl_compare_t)subnet_compare, NULL);
+ p->queue = list_alloc((list_action_t)free);
cp
return p;
}
void free_connection(connection_t *p)
{
cp
- if(p->sq)
- destroy_queue(p->sq);
- if(p->rq)
- destroy_queue(p->rq);
+ if(p->queue)
+ list_delete_list(p->queue);
if(p->name && p->name!=unknown)
free(p->name);
if(p->hostname)
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: connection.h,v 1.1.2.4 2001/01/05 23:53:49 guus Exp $
+ $Id: connection.h,v 1.1.2.5 2001/01/07 15:25:41 guus Exp $
*/
#ifndef __TINC_CONNECTION_H__
#define __TINC_CONNECTION_H__
#include <avl_tree.h>
+#include <list.h>
#include "config.h"
int socket; /* our udp vpn socket */
int meta_socket; /* our tcp meta socket */
status_bits_t status; /* status info */
- packet_queue_t *sq; /* pending outgoing packets */
- packet_queue_t *rq; /* pending incoming packets (they have no
- valid key to be decrypted with) */
- RSA *rsa_key; /* the public/private key */
+ RSA *rsa_key; /* the public/private key */
EVP_CIPHER_CTX *cipher_inctx; /* Context of encrypted meta data that will come from him to us */
EVP_CIPHER_CTX *cipher_outctx; /* Context of encrypted meta data that will be sent from us to him */
char *cipher_inkey; /* His symmetric meta key */
char *cipher_outkey; /* Our symmetric meta key */
-
EVP_CIPHER *cipher_pkttype; /* Cipher type for encrypted vpn packets */
char *cipher_pktkey; /* Cipher key and iv */
int cipher_pktkeylength; /* Cipher key and iv length*/
time_t last_ping_time; /* last time we saw some activity from the other end */
+ list_t *queue; /* Queue for packets awaiting to be encrypted */
+
char *mychallenge; /* challenge we received from him */
char *hischallenge; /* challenge we sent to him */
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: net.c,v 1.35.4.89 2001/01/05 23:53:49 guus Exp $
+ $Id: net.c,v 1.35.4.90 2001/01/07 15:25:41 guus Exp $
*/
#include "config.h"
#include <utils.h>
#include <xalloc.h>
#include <avl_tree.h>
+#include <list.h>
#include "conf.h"
#include "connection.h"
-#include "list.h"
#include "meta.h"
#include "net.h"
#include "netutl.h"
return 0;
}
-/*
- add the given packet of size s to the
- queue q, be it the send or receive queue
-*/
-void add_queue(packet_queue_t **q, void *packet, size_t s)
-{
- queue_element_t *e;
-cp
- e = xmalloc(sizeof(*e));
- e->packet = xmalloc(s);
- memcpy(e->packet, packet, s);
-
- if(!*q)
- {
- *q = xmalloc(sizeof(**q));
- (*q)->head = (*q)->tail = NULL;
- }
-
- e->next = NULL; /* We insert at the tail */
-
- if((*q)->tail) /* Do we have a tail? */
- {
- (*q)->tail->next = e;
- e->prev = (*q)->tail;
- }
- else /* No tail -> no head too */
- {
- (*q)->head = e;
- e->prev = NULL;
- }
-
- (*q)->tail = e;
-cp
-}
-
-/* Remove a queue element */
-void del_queue(packet_queue_t **q, queue_element_t *e)
-{
-cp
- free(e->packet);
-
- if(e->next) /* There is a successor, so we are not tail */
- {
- if(e->prev) /* There is a predecessor, so we are not head */
- {
- e->next->prev = e->prev;
- e->prev->next = e->next;
- }
- else /* We are head */
- {
- e->next->prev = NULL;
- (*q)->head = e->next;
- }
- }
- else /* We are tail (or all alone!) */
- {
- if(e->prev) /* We are not alone :) */
- {
- e->prev->next = NULL;
- (*q)->tail = e->prev;
- }
- else /* Adieu */
- {
- free(*q);
- *q = NULL;
- }
- }
-
- free(e);
-cp
-}
-
-/*
- flush a queue by calling function for
- each packet, and removing it when that
- returned a zero exit code
-*/
-void flush_queue(connection_t *cl, packet_queue_t **pq,
- int (*function)(connection_t*,vpn_packet_t*))
-{
- queue_element_t *p, *next = NULL;
-cp
- for(p = (*pq)->head; p != NULL; )
- {
- next = p->next;
-
- if(!function(cl, p->packet))
- del_queue(pq, p);
-
- p = next;
- }
-
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_DEBUG, _("Queue flushed"));
-cp
-}
-
-/*
- flush the send&recv queues
- void because nothing goes wrong here, packets
- remain in the queue if something goes wrong
-*/
-void flush_queues(connection_t *cl)
-{
-cp
- if(cl->sq)
- {
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_DEBUG, _("Flushing send queue for %s (%s)"),
- cl->name, cl->hostname);
- flush_queue(cl, &(cl->sq), xsend);
- }
-
- if(cl->rq)
- {
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_DEBUG, _("Flushing receive queue for %s (%s)"),
- cl->name, cl->hostname);
- flush_queue(cl, &(cl->rq), xrecv);
- }
-cp
-}
-
/*
send a packet to the given vpn ip.
*/
return -1;
}
+ if(!cl->status.active)
+ {
+ if(debug_lvl >= DEBUG_TRAFFIC)
+ syslog(LOG_INFO, _("%s (%s) is not active, dropping packet"),
+ cl->name, cl->hostname);
+
+ 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)
{
-/* FIXME: Don't queue until everything else is fixed.
if(debug_lvl >= DEBUG_TRAFFIC)
syslog(LOG_INFO, _("No valid key known yet for %s (%s), queueing packet"),
cl->name, cl->hostname);
- add_queue(&(cl->sq), packet, packet->len + 2);
-*/
+
+ list_insert_tail(cl->queue, packet);
+
if(!cl->status.waitingforkey)
send_req_key(myself, cl); /* Keys should be sent to the host running the tincd */
return 0;
}
- if(!cl->status.active)
- {
-/* FIXME: Don't queue until everything else is fixed.
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_INFO, _("%s (%s) is not ready, queueing packet"),
- cl->name, cl->hostname);
- add_queue(&(cl->sq), packet, packet->len + 2);
-*/
- return 0; /* We don't want to mess up, do we? */
- }
-
/* can we send it? can we? can we? huh? */
cp
return xsend(cl, packet);
}
+void flush_queue(connection_t *cl)
+{
+ list_node_t *node, *next;
+
+ if(debug_lvl >= DEBUG_TRAFFIC)
+ syslog(LOG_INFO, _("Flushing queue for %s (%s)"), cl->name, cl->hostname);
+
+ for(node = cl->queue->head; node; node = next)
+ {
+ next = node->next;
+ xsend(cl, (vpn_packet_t *)node->data);
+ list_delete_node(cl->queue, node);
+ }
+}
+
/*
open the local ethertap device
*/
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: net.h,v 1.9.4.24 2000/12/22 21:34:23 guus Exp $
+ $Id: net.h,v 1.9.4.25 2001/01/07 15:25:44 guus Exp $
*/
#ifndef __TINC_NET_H__
extern void main_loop(void);
extern int setup_vpn_connection(connection_t *);
extern void terminate_connection(connection_t *);
-extern void flush_queues(connection_t *);
-extern void add_queue(packet_queue_t **, void *, size_t);
-
+extern void flush_queue(connection_t *);
#include <config.h>
#ifdef HAVE_OPENSSL_RSA_H
/*
netutl.c -- some supporting network utility code
Copyright (C) 1998,1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>
+ 2000 Guus Sliepen <guus@sliepen.warande.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: netutl.c,v 1.12.4.16 2000/11/22 18:54:08 guus Exp $
+ $Id: netutl.c,v 1.12.4.17 2001/01/07 15:25:44 guus Exp $
*/
#include "config.h"
#include "system.h"
-
-/*
- free a queue and all of its elements
-*/
-void destroy_queue(packet_queue_t *pq)
-{
- queue_element_t *p, *q;
-cp
- for(p = pq->head; p != NULL; p = q)
- {
- q = p->next;
- if(p->packet)
- free(p->packet);
- free(p);
- }
-
- free(pq);
-cp
-}
-
-
char *hostlookup(unsigned long addr)
{
char *name;
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: process.c,v 1.1.2.18 2001/01/05 23:53:51 guus Exp $
+ $Id: process.c,v 1.1.2.19 2001/01/07 15:25:45 guus Exp $
*/
#include "config.h"
#include <unistd.h>
#include <termios.h>
-#include <list.h>
#include <pidfile.h>
#include <utils.h>
#include <xalloc.h>
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: process.h,v 1.1.2.5 2000/11/24 23:13:06 guus Exp $
+ $Id: process.h,v 1.1.2.6 2001/01/07 15:25:45 guus Exp $
*/
#ifndef __TINC_PROCESS_H__
#define __TINC_PROCESS_H__
#include "config.h"
-#include <list.h>
extern void setup_signals(void);
extern int execute_script(const char *);
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: protocol.c,v 1.28.4.72 2001/01/06 18:03:40 guus Exp $
+ $Id: protocol.c,v 1.28.4.73 2001/01/07 15:25:45 guus Exp $
*/
#include "config.h"
#include <utils.h>
#include <xalloc.h>
#include <avl_tree.h>
+#include <list.h>
#include <netinet/in.h>
from->status.validkey = 1;
from->status.waitingforkey = 0;
+
+ flush_queue(from);
cp
return 0;
}
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: route.c,v 1.1.2.4 2001/01/05 23:53:53 guus Exp $
+ $Id: route.c,v 1.1.2.5 2001/01/07 15:25:49 guus Exp $
*/
#include "config.h"
#include "system.h"
-int routing_mode = RMODE_ROUTER; /* Will be used to determine if we route by MAC or by payload's protocol */
+int routing_mode = RMODE_ROUTER;
-connection_t *route_mac(connection_t *source, vpn_packet_t *packet)
+void learn_mac(connection_t *source, mac_t *address)
{
- connection_t *oldsrc, *dst;
+ connection_t *old;
subnet_t *subnet;
cp
- /* Learn source address */
-
- oldsrc = lookup_subnet_mac((mac_t *)(&packet->data[0]))->owner;
+ old = lookup_subnet_mac(address)->owner;
- if(!oldsrc)
+ if(!old)
{
subnet = new_subnet();
subnet->type = SUBNET_MAC;
- memcpy(&subnet->net.mac.address, (mac_t *)(&packet->data[0]), sizeof(mac_t));
+// subnet->lasttime = gettimeofday();
+ memcpy(&subnet->net.mac.address, address, sizeof(mac_t));
subnet_add(source, subnet);
+
+ if(DEBUG_LVL >= DEBUG_TRAFFIC)
+ {
+ syslog(LOG_DEBUG, _("Learned new MAC address %x:%x:%x:%x:%x:%x from %s (%s)"),
+ address->address.x[0],
+ address->address.x[1],
+ address->address.x[2],
+ address->address.x[3],
+ address->address.x[4],
+ address->address.x[5],
+ cl->name, cl->hostname);
+ }
}
+}
+
+connection_t *route_mac(connection_t *source, vpn_packet_t *packet)
+{
+ connection_t *oldsrc, *dst;
+ subnet_t *subnet;
+cp
+ /* Learn source address */
- /* FIXME: do ageing and roaming */
+ learn_mac(source, (mac_t *)(&packet->data[0]));
/* Lookup destination address */
cp
if(debug_lvl > DEBUG_NOTHING)
{
- syslog(LOG_WARNING, _("Cannot route packet: IPv6 routing not implemented yet"));
+ syslog(LOG_WARNING, _("Cannot route packet: IPv6 routing not yet implemented"));
}
cp
return NULL;
}
-connection_t *route_packet(connection_t *source, vpn_packet_t *packet)
+void route_outgoing(vpn_packet_t *packet)
{
unsigned short int type;
+ avl_tree_t *node;
+ connection_t *cl;
cp
/* FIXME: multicast? */
switch(routing_mode)
{
- case RMODE_HUB:
- return broadcast;
-
- case RMODE_SWITCH:
- return route_mac(source, packet);
-
case RMODE_ROUTER:
type = ntohs(*((unsigned short*)(&packet->data[12])));
switch(type)
{
case 0x0800:
- return route_ipv4(packet);
+ cl = route_ipv4(packet);
+ break;
case 0x86DD:
- return route_ipv6(packet);
- /*
- case 0x8137:
- return route_ipx(packet);
- case 0x0806:
- return route_arp(packet);
- */
+ cl = route_ipv6(packet);
+ break;
default:
if(debug_lvl >= DEBUG_TRAFFIC)
{
syslog(LOG_WARNING, _("Cannot route packet: unknown type %hx"), type);
}
- return NULL;
+ return;
}
+ send_packet(cl, packet);
+ break;
+
+ case RMODE_SWITCH:
+ cl = route_mac(packet);
+ if(cl)
+ send_packet(cl, packet);
+ break;
+
+ case RMODE_HUB:
+ for(node = connection_tree->head; node; node = node->next)
+ {
+ cl = (connection_t *)node->data;
+ if(cl->status.active)
+ send_packet(cl, packet);
+ }
+ break;
}
}
+
+void route_incoming(connection_t *source, vpn_packet_t *packet)
+{
+ switch(routing_mode)
+ {
+ case RMODE_SWITCH:
+ learn_mac(source, &packet->data[0]);
+ break;
+ }
+
+ accept_packet(packet);
+}
projects / meshlink / commitdiff