/*
device.c -- Interaction with OpenBSD tun device
- Copyright (C) 2001-2002 Ivo Timmermans <itimmermans@bigfoot.com>,
- 2001-2002 Guus Sliepen <guus@sliepen.warande.net>
+ Copyright (C) 2001-2003 Ivo Timmermans <ivo@o2w.nl>,
+ 2001-2003 Guus Sliepen <guus@sliepen.eu.org>
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: device.c,v 1.1.2.7 2002/03/24 17:08:38 guus Exp $
+ $Id: device.c,v 1.1.2.17 2003/07/22 20:55:21 guus Exp $
*/
-#include "config.h"
-
-#include <stdio.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-#include <fcntl.h>
-#include <net/if.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <string.h>
-
-#include <utils.h>
+#include "system.h"
+
#include "conf.h"
+#include "logger.h"
#include "net.h"
-#include "subnet.h"
-
-#include "system.h"
+#include "utils.h"
#define DEFAULT_DEVICE "/dev/tun0"
#define DEVICE_TYPE_TUNTAP 1
int device_fd = -1;
-int device_type;
char *device;
-char *interface;
+char *iface;
char *device_info;
int device_total_in = 0;
int device_total_out = 0;
-extern subnet_t mymac;
-
-/*
- open the local ethertap device
-*/
-int setup_device(void)
+bool setup_device(void)
{
- if(!get_config_string(lookup_config(config_tree, "Device"), &device))
- device = DEFAULT_DEVICE;
-
- if(!get_config_string(lookup_config(config_tree, "Interface"), &interface))
- interface = rindex(device, '/')?rindex(device, '/')+1:device;
-cp
- if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0)
- {
- syslog(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
- return -1;
- }
-cp
- /* Set default MAC address for ethertap devices */
-
- mymac.type = SUBNET_MAC;
- mymac.net.mac.address.x[0] = 0xfe;
- mymac.net.mac.address.x[1] = 0xfd;
- mymac.net.mac.address.x[2] = 0x00;
- mymac.net.mac.address.x[3] = 0x00;
- mymac.net.mac.address.x[4] = 0x00;
- mymac.net.mac.address.x[5] = 0x00;
-
- device_info = _("OpenBSD tun device");
-
- syslog(LOG_INFO, _("%s is a %s"), device, device_info);
-cp
- return 0;
+ cp();
+
+ if(!get_config_string(lookup_config(config_tree, "Device"), &device))
+ device = DEFAULT_DEVICE;
+
+ if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
+ iface = rindex(device, '/') ? rindex(device, '/') + 1 : device;
+ if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0) {
+ logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
+ return false;
+ }
+
+ device_info = _("OpenBSD tun device");
+
+ logger(LOG_INFO, _("%s is a %s"), device, device_info);
+
+ return true;
}
void close_device(void)
{
-cp
- close(device_fd);
-cp
+ cp();
+
+ close(device_fd);
}
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
{
- int lenin;
- u_int32_t type;
- struct iovec vector[2] = {{&type, sizeof(type)}, {packet->data + 14, MTU - 14}};
-cp
-
- if((lenin = readv(device_fd, vector, 2)) <= 0)
- {
- syslog(LOG_ERR, _("Error while reading from %s %s: %s"), device_info, device, strerror(errno));
- return -1;
- }
-
- memcpy(packet->data, mymac.net.mac.address.x, 6);
- memcpy(packet->data + 6, mymac.net.mac.address.x, 6);
-
- switch(ntohl(type))
- {
- case AF_INET:
- packet->data[12] = 0x8;
- packet->data[13] = 0x0;
- break;
- case AF_INET6:
- packet->data[12] = 0x86;
- packet->data[13] = 0xDD;
- break;
- default:
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_ERR, _("Unknown address family %s while reading packet from %s %s"), ntohl(type), device_info, device);
- return -1;
- }
-
- packet->len = lenin + 10;
-
- device_total_in += packet->len;
-
- if(debug_lvl >= DEBUG_TRAFFIC)
- {
- syslog(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len, device_info);
- }
-
- return 0;
-cp
+ int lenin;
+ u_int32_t type;
+ struct iovec vector[2] = {{&type, sizeof(type)}, {packet->data + 14, MTU - 14}};
+
+ cp();
+
+ if((lenin = readv(device_fd, vector, 2)) <= 0) {
+ logger(LOG_ERR, _("Error while reading from %s %s: %s"), device_info,
+ device, strerror(errno));
+ return false;
+ }
+
+ switch (ntohl(type)) {
+ case AF_INET:
+ packet->data[12] = 0x8;
+ packet->data[13] = 0x0;
+ break;
+
+ case AF_INET6:
+ packet->data[12] = 0x86;
+ packet->data[13] = 0xDD;
+ break;
+
+ default:
+ ifdebug(TRAFFIC) logger(LOG_ERR,
+ _ ("Unknown address family %d while reading packet from %s %s"),
+ ntohl(type), device_info, device);
+ return false;
+ }
+
+ packet->len = lenin + 10;
+
+ device_total_in += packet->len;
+
+ ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
+ device_info);
+ }
+
+ return true;
}
-int write_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
{
- u_int32_t type;
- struct iovec vector[2];
- int af;
-cp
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
- packet->len, device_info);
-
- af = (packet->data[12] << 8) + packet->data[13];
-
- switch(af)
- {
- case 0x800:
- type = htonl(AF_INET);
- break;
- case 0x86DD:
- type = htonl(AF_INET6);
- break;
- default:
- if(debug_lvl >= DEBUG_TRAFFIC)
- syslog(LOG_ERR, _("Unknown address family %s while writing packet to %s %s"), af, device_info, device);
- return -1;
- }
-
- vector[0].iov_base = &type;
- vector[0].iov_len = sizeof(type);
- vector[1].iov_base = packet->data + 14;
- vector[1].iov_len = packet->len - 14;
-
- if(writev(device_fd, vector, 2) < 0)
- {
- syslog(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device, strerror(errno));
- return -1;
- }
-
- device_total_out += packet->len;
-cp
+ u_int32_t type;
+ struct iovec vector[2];
+ int af;
+
+ cp();
+
+ ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Writing packet of %d bytes to %s"),
+ packet->len, device_info);
+
+ af = (packet->data[12] << 8) + packet->data[13];
+
+ switch (af) {
+ case 0x800:
+ type = htonl(AF_INET);
+ break;
+ case 0x86DD:
+ type = htonl(AF_INET6);
+ break;
+ default:
+ ifdebug(TRAFFIC) logger(LOG_ERR,
+ _("Unknown address family %d while writing packet to %s %s"),
+ af, device_info, device);
+ return false;
+ }
+
+ vector[0].iov_base = &type;
+ vector[0].iov_len = sizeof(type);
+ vector[1].iov_base = packet->data + 14;
+ vector[1].iov_len = packet->len - 14;
+
+ if(writev(device_fd, vector, 2) < 0) {
+ logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device,
+ strerror(errno));
+ return false;
+ }
+
+ device_total_out += packet->len;
+
+ return true;
}
void dump_device_stats(void)
{
-cp
- syslog(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
- syslog(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
- syslog(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);
-cp
+ cp();
+
+ logger(LOG_DEBUG, _("Statistics for %s %s:"), device_info, device);
+ logger(LOG_DEBUG, _(" total bytes in: %10d"), device_total_in);
+ logger(LOG_DEBUG, _(" total bytes out: %10d"), device_total_out);
}
projects / tinc / blobdiff