along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: net.c,v 1.35.4.34 2000/10/11 22:00:58 guus Exp $
+ $Id: net.c,v 1.35.4.41 2000/10/20 15:34:35 guus Exp $
*/
#include "config.h"
#include <syslog.h>
#include <unistd.h>
+#ifdef HAVE_TUNTAP
+#include <net/if.h>
+#include LINUX_IF_TUN_H
+#endif
+
#include <utils.h>
#include <xalloc.h>
#include "system.h"
int tap_fd = -1;
-
+int taptype = 0;
int total_tap_in = 0;
int total_tap_out = 0;
int total_socket_in = 0;
int upstreamindex = 0;
static int seconds_till_retry;
-/* The global list of existing connections */
-conn_list_t *conn_list = NULL;
-conn_list_t *myself = NULL;
+char *unknown = NULL;
/*
strip off the MAC adresses of an ethernet frame
int outlen, outpad;
cp
outpkt.len = inpkt->len;
- EVP_EncryptInit(cl->cipher_pktctx, cl->cipher_pkttype, cl->cipher_pktkey, cl->cipher_pktiv);
+ EVP_EncryptInit(cl->cipher_pktctx, cl->cipher_pkttype, cl->cipher_pktkey, NULL);
EVP_EncryptUpdate(cl->cipher_pktctx, outpkt.data, &outlen, inpkt->data, inpkt->len);
EVP_EncryptFinal(cl->cipher_pktctx, outpkt.data + outlen, &outpad);
outlen += outpad;
inpkt->len);
outpkt.len = inpkt->len;
- EVP_DecryptInit(myself->cipher_pktctx, myself->cipher_pkttype, myself->cipher_pktkey, myself->cipher_pktiv);
+ EVP_DecryptInit(myself->cipher_pktctx, myself->cipher_pkttype, myself->cipher_pktkey, NULL);
EVP_DecryptUpdate(myself->cipher_pktctx, outpkt.data, &outlen, inpkt->data, inpkt->len);
/* FIXME: grok DecryptFinal
EVP_DecryptFinal(myself->cipher_pktctx, outpkt.data + outlen, &outpad);
/* FIXME - check for indirection and reprogram it The Right Way(tm) this time. */
- if(my_key_expiry <= time(NULL))
- regenerate_keys();
-
if(!cl->status.dataopen)
if(setup_vpn_connection(cl) < 0)
{
int nfd;
const char *tapfname;
config_t const *cfg;
+
+#ifdef HAVE_TUNTAP
+ struct ifreq ifr;
+#endif
cp
- if((cfg = get_config_val(config, tapdevice)) == NULL)
- tapfname = "/dev/tap0";
- else
+ if((cfg = get_config_val(config, tapdevice)))
tapfname = cfg->data.ptr;
-
+ else
+#ifdef HAVE_TUNTAP
+ tapfname = "/dev/misc/net/tun";
+#else
+ tapfname = "/dev/tap0";
+#endif
+cp
if((nfd = open(tapfname, O_RDWR | O_NONBLOCK)) < 0)
{
syslog(LOG_ERR, _("Could not open %s: %m"), tapfname);
return -1;
}
-
+cp
tap_fd = nfd;
+
+ taptype = 0;
+
+#ifdef HAVE_TUNTAP
+ /* Ok now check if this is an old ethertap or a new tun/tap thingie */
+ memset(&ifr, 0, sizeof(ifr));
+cp
+ ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
+ if (netname)
+ strncpy(ifr.ifr_name, netname, IFNAMSIZ);
+cp
+ if (!ioctl(tap_fd, TUNSETIFF, (void *) &ifr))
+ {
+ syslog(LOG_INFO, _("%s is a new style tun/tap device"), tapfname);
+ taptype = 1;
+ if((cfg = get_config_val(config, tapsubnet)) == NULL)
+ syslog(LOG_INFO, _("tun/tap device will be left unconfigured"));
+ else
+ /* Setup inetaddr/netmask etc */;
+ }
+#endif
+
cp
return 0;
}
if(debug_lvl > 0)
syslog(LOG_INFO, _("Connected to %s port %hd"),
cl->hostname, cl->port);
+
+ cl->status.meta = 1;
cp
return 0;
}
an authentication sequence during which
we will do just that.
*/
-int setup_outgoing_connection(char *hostname)
+int setup_outgoing_connection(char *name)
{
conn_list_t *ncn;
struct hostent *h;
+ config_t *cfg;
cp
- if(!(h = gethostbyname(hostname)))
+ if(check_id(name))
{
- syslog(LOG_ERR, _("Error looking up `%s': %m"), hostname);
+ syslog(LOG_ERR, _("Invalid name for outgoing connection"));
return -1;
}
ncn = new_conn_list();
+ asprintf(&ncn->name, "%s", name);
+
+ if(read_host_config(ncn))
+ {
+ syslog(LOG_ERR, _("Error reading host configuration file for %s"));
+ free_conn_list(ncn);
+ return -1;
+ }
+
+ if(!(cfg = get_config_val(ncn->config, address)))
+ {
+ syslog(LOG_ERR, _("No address specified for %s"));
+ free_conn_list(ncn);
+ return -1;
+ }
+
+ if(!(h = gethostbyname(cfg->data.ptr)))
+ {
+ syslog(LOG_ERR, _("Error looking up `%s': %m"), cfg->data.ptr);
+ free_conn_list(ncn);
+ return -1;
+ }
+
ncn->address = ntohl(*((ip_t*)(h->h_addr_list[0])));
ncn->hostname = hostlookup(htonl(ncn->address));
{
syslog(LOG_ERR, _("Could not set up a meta connection to %s"),
ncn->hostname);
- free_conn_element(ncn);
+ free_conn_list(ncn);
return -1;
}
- ncn->status.meta = 1;
ncn->status.outgoing = 1;
- ncn->next = conn_list;
- conn_list = ncn;
+ ncn->buffer = xmalloc(MAXBUFSIZE);
+ ncn->buflen = 0;
+ ncn->last_ping_time = time(NULL);
+ ncn->want_ping = 0;
+
+ conn_list_add(ncn);
+
+ send_id(ncn);
cp
return 0;
}
cp
myself = new_conn_list();
- myself->hostname = "MYSELF"; /* FIXME? */
+ asprintf(&myself->hostname, "MYSELF"); /* FIXME? Do hostlookup on ourselves? */
myself->flags = 0;
+ myself->protocol_version = PROT_CURRENT;
if(!(cfg = get_config_val(config, tincname))) /* Not acceptable */
{
return -1;
}
else
- myself->name = (char*)cfg->data.val;
-
- if(!(cfg = get_config_val(myself, port)))
+ asprintf(&myself->name, "%s", (char*)cfg->data.val);
+
+ if(check_id(myself->name))
+ {
+ syslog(LOG_ERR, _("Invalid name for myself!"));
+ return -1;
+ }
+cp
+ if(!(cfg = get_config_val(config, privatekey)))
+ {
+ syslog(LOG_ERR, _("Private key for tinc daemon required!"));
+ return -1;
+ }
+ else
+ {
+ myself->rsa_key = RSA_new();
+ BN_hex2bn(&myself->rsa_key->d, cfg->data.ptr);
+ BN_hex2bn(&myself->rsa_key->e, "FFFF");
+ }
+
+ if(read_host_config(myself))
+ {
+ syslog(LOG_ERR, _("Cannot open host configuration file for myself!"));
+ return -1;
+ }
+cp
+ if(!(cfg = get_config_val(myself->config, publickey)))
+ {
+ syslog(LOG_ERR, _("Public key for tinc daemon required!"));
+ return -1;
+ }
+ else
+ {
+ BN_hex2bn(&myself->rsa_key->n, cfg->data.ptr);
+ }
+/*
+ if(RSA_check_key(myself->rsa_key) != 1)
+ {
+ syslog(LOG_ERR, _("Invalid public/private keypair!"));
+ return -1;
+ }
+*/
+ if(!(cfg = get_config_val(myself->config, port)))
myself->port = 655;
else
myself->port = cfg->data.val;
- if((cfg = get_config_val(config, indirectdata)))
+ if((cfg = get_config_val(myself->config, indirectdata)))
if(cfg->data.val == stupid_true)
myself->flags |= EXPORTINDIRECTDATA;
- if((cfg = get_config_val(config, tcponly)))
+ if((cfg = get_config_val(myself->config, tcponly)))
if(cfg->data.val == stupid_true)
myself->flags |= TCPONLY;
if((myself->meta_socket = setup_listen_meta_socket(myself->port)) < 0)
{
- syslog(LOG_ERR, _("Unable to set up a listening socket"));
+ syslog(LOG_ERR, _("Unable to set up a listening socket!"));
return -1;
}
if((myself->socket = setup_vpn_in_socket(myself->port)) < 0)
{
- syslog(LOG_ERR, _("Unable to set up an incoming vpn data socket"));
+ syslog(LOG_ERR, _("Unable to set up an incoming vpn data socket!"));
close(myself->meta_socket);
return -1;
}
{
config_t const *cfg;
cp
-/* FIXME! Use name instead of upstreamip.
- cfg = get_next_config_val(config, upstreamip, upstreamindex++);
-*/
+ cfg = get_next_config_val(config, connectto, upstreamindex++);
+
+ if(!upstreamindex && !cfg)
+ /* No upstream IP given, we're listen only. */
+ return;
+
while(cfg)
{
if(!setup_outgoing_connection(cfg->data.ptr)) /* function returns 0 when there are no problems */
signal(SIGALRM, SIG_IGN);
return;
}
-// cfg = get_next_config_val(config, upstreamip, upstreamindex++); /* Or else we try the next ConnectTo line */
+ cfg = get_next_config_val(config, connectto, upstreamindex++); /* Or else we try the next ConnectTo line */
}
signal(SIGALRM, sigalrm_handler);
if(setup_myself() < 0)
return -1;
-// if((cfg = get_next_config_val(config, upstreamip, upstreamindex++)) == NULL)
+ if((cfg = get_next_config_val(config, connectto, upstreamindex++)) == NULL)
/* No upstream IP given, we're listen only. */
return 0;
{
if(!setup_outgoing_connection(cfg->data.ptr)) /* function returns 0 when there are no problems */
return 0;
-// cfg = get_next_config_val(config, upstreamip, upstreamindex++); /* Or else we try the next ConnectTo line */
+ cfg = get_next_config_val(config, connectto, upstreamindex++); /* Or else we try the next ConnectTo line */
}
signal(SIGALRM, sigalrm_handler);
return NULL;
}
+ p->name = unknown;
p->address = ntohl(ci.sin_addr.s_addr);
p->hostname = hostlookup(ci.sin_addr.s_addr);
p->meta_socket = sfd;
p->status.meta = 1;
+ p->buffer = xmalloc(MAXBUFSIZE);
p->buflen = 0;
p->last_ping_time = time(NULL);
p->want_ping = 0;
syslog(LOG_NOTICE, _("Connection from %s port %d"),
p->hostname, htons(ci.sin_port));
- if(send_basic_info(p) < 0)
- {
- free_conn_element(p);
- return NULL;
- }
+ p->allow_request = ID;
cp
return p;
}
if(debug_lvl > 0)
syslog(LOG_NOTICE, _("Closing connection with %s (%s)"),
cl->name, cl->hostname);
-
- if(cl->status.timeout)
- send_timeout(cl);
-/* else if(!cl->status.termreq)
- send_termreq(cl);
- */
if(cl->socket)
close(cl->socket);
cl->status.remove = 1;
/* If this cl isn't active, don't send any DEL_HOSTs. */
+
+/* FIXME: reprogram this.
if(cl->status.active)
notify_others(cl,NULL,send_del_host);
+*/
cp
/* Find all connections that were lost because they were behind cl
if((p->nexthop == cl) && (p != cl))
{
if(cl->status.active && p->status.active)
+/* FIXME: reprogram this
notify_others(p,cl,send_del_host);
+*/;
if(cl->socket)
close(cl->socket);
p->status.active = 0;
int ether_type, lenin;
cp
memset(&vp, 0, sizeof(vp));
- if((lenin = read(tap_fd, &vp, MTU)) <= 0)
+
+ if(taptype = 1)
{
- syslog(LOG_ERR, _("Error while reading from tapdevice: %m"));
- return;
+ if((lenin = read(tap_fd, vp.data, MTU)) <= 0)
+ {
+ syslog(LOG_ERR, _("Error while reading from tapdevice: %m"));
+ return;
+ }
+ vp.len = lenin;
+ }
+ else
+ {
+ if((lenin = read(tap_fd, &vp, MTU)) <= 0)
+ {
+ syslog(LOG_ERR, _("Error while reading from tapdevice: %m"));
+ return;
+ }
+ vp.len = lenin - 2;
}
total_tap_in += lenin;
from = ntohl(*((unsigned long*)(&vp.data[26])));
to = ntohl(*((unsigned long*)(&vp.data[30])));
- vp.len = (length_t)lenin - 2;
-
- strip_mac_addresses(&vp);
-
send_packet(to, &vp);
cp
}
if(sighup)
{
sighup = 0;
+/* FIXME: reprogram this.
if(debug_lvl > 1)
syslog(LOG_INFO, _("Rereading configuration file"));
close_network_connections();
}
sleep(5);
setup_network_connections();
+*/
continue;
}
projects / tinc / blobdiff