"Fossies" - the Fresh Open Source Software Archive  

Source code changes of the file "src/tuntap_freebsd.c" between
n2n-2.8.tar.gz and n2n-3.0.tar.gz

About: n2n is a layer-two peer-to-peer virtual private network (VPN) which allows bypassing intermediate firewalls.

tuntap_freebsd.c  (n2n-2.8)	:	tuntap_freebsd.c  (n2n-3.0)
/**		/**
* (C) 2007-20 - ntop.org and contributors		* (C) 2007-21 - ntop.org and contributors
*		*
* This program is free software; you can redistribute it and/or modify		* 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		* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or		* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.		* (at your option) any later version.
*		*
* This program is distributed in the hope that it will be useful,		* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of		* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.		* GNU General Public License for more details.
*		*
* You should have received a copy of the GNU General Public License		* You should have received a copy of the GNU General Public License
* along with this program; if not see see <http://www.gnu.org/licenses/>		* along with this program; if not see see <http://www.gnu.org/licenses/>
*		*
*/		*/
#include "n2n.h"		#include "n2n.h"
#ifdef __FreeBSD__		#ifdef __FreeBSD__
void tuntap_close(tuntap_dev *device);		#define N2N_FREEBSD_TAPDEVICE_SIZE 32
/* ********************************** */		void tuntap_close (tuntap_dev *device);
#define N2N_FREEBSD_TAPDEVICE_SIZE 32		int tuntap_open (tuntap_dev *device /* ignored */,
int tuntap_open(tuntap_dev *device /* ignored */,		char *dev,
char *dev,		const char *address_mode, /* static or dhcp */
const char *address_mode, /* static or dhcp */		char *device_ip,
char *device_ip,		char *device_mask,
char *device_mask,		const char * device_mac,
const char * device_mac,		int mtu) {
int mtu) {
int i;		int i;
char tap_device[N2N_FREEBSD_TAPDEVICE_SIZE];		char tap_device[N2N_FREEBSD_TAPDEVICE_SIZE];
for (i = 0; i < 255; i++) {		for(i = 0; i < 255; i++) {
snprintf(tap_device, sizeof(tap_device), "/dev/tap%d", i);		snprintf(tap_device, sizeof(tap_device), "/dev/tap%d", i);
device->fd = open(tap_device, O_RDWR);		device->fd = open(tap_device, O_RDWR);
if(device->fd > 0) {		if(device->fd > 0) {
traceEvent(TRACE_NORMAL, "Succesfully open %s", tap_device);		traceEvent(TRACE_NORMAL, "Succesfully open %s", tap_device);
break;		break;
		}
}		}
}
if(device->fd < 0) {		if(device->fd < 0) {
traceEvent(TRACE_ERROR, "Unable to open tap device");		traceEvent(TRACE_ERROR, "Unable to open tap device");
return(-1);		return -1;
} else {		} else {
char buf[256];		char buf[256];
FILE *fd;		FILE *fd;
device->ip_addr = inet_addr(device_ip);		device->ip_addr = inet_addr(device_ip);
if ( device_mac && device_mac[0] != '\0' )		if(device_mac && device_mac[0] != '\0') {
{		// FIXME - this is not tested, might be wrong syntax for OS X
/* FIXME - This is not tested. Might be wrong syntax for OS X */
		// set the hw address before bringing the if up
/* Set the hw address before bringing the if up. */		snprintf(buf, sizeof(buf), "ifconfig tap%d ether %s", i, device_mac)
snprintf(buf, sizeof(buf), "ifconfig tap%d ether %s",		;
i, device_mac);		system(buf);
		}
		snprintf(buf, sizeof(buf), "ifconfig tap%d %s netmask %s mtu %d up", i,
		device_ip, device_mask, mtu);
system(buf);		system(buf);
}
snprintf(buf, sizeof(buf), "ifconfig tap%d %s netmask %s mtu %d up",		traceEvent(TRACE_NORMAL, "Interface tap%d up and running (%s/%s)", i, de
i, device_ip, device_mask, mtu);		vice_ip, device_mask);
system(buf);
traceEvent(TRACE_NORMAL, "Interface tap%d up and running (%s/%s)",
i, device_ip, device_mask);
/* Read MAC address */
snprintf(buf, sizeof(buf), "ifconfig tap%d |grep ether|cut -c 8-24", i);
/* traceEvent(TRACE_INFO, "%s", buf); */
fd = popen(buf, "r");
if(fd < 0) {
tuntap_close(device);
return(-1);
} else {
int a, b, c, d, e, f;
buf[0] = 0;		// read MAC address
fgets(buf, sizeof(buf), fd);		snprintf(buf, sizeof(buf), "ifconfig tap%d |grep ether|cut -c 8-24", i);
pclose(fd);		// traceEvent(TRACE_INFO, "%s", buf);
if(buf[0] == '\0') {		fd = popen(buf, "r");
traceEvent(TRACE_ERROR, "Unable to read tap%d interface MAC address");		if(fd < 0) {
exit(0);		tuntap_close(device);
}		return -1;
		} else {
traceEvent(TRACE_NORMAL, "Interface tap%d mac %s", i, buf);		int a, b, c, d, e, f;
if(sscanf(buf, "%02x:%02x:%02x:%02x:%02x:%02x", &a, &b, &c, &d, &e, &f) ==
6) {		buf[0] = 0;
device->mac_addr[0] = a, device->mac_addr[1] = b;		fgets(buf, sizeof(buf), fd);
device->mac_addr[2] = c, device->mac_addr[3] = d;		pclose(fd);
device->mac_addr[4] = e, device->mac_addr[5] = f;
}		if(buf[0] == '\0') {
		traceEvent(TRACE_ERROR, "Unable to read tap%d interface MAC addr
		ess");
		exit(0);
		}
		traceEvent(TRACE_NORMAL, "Interface tap%d mac %s", i, buf);
		if(sscanf(buf, "%02x:%02x:%02x:%02x:%02x:%02x", &a, &b, &c, &d, &e,
		&f) == 6) {
		device->mac_addr[0] = a, device->mac_addr[1] = b;
		device->mac_addr[2] = c, device->mac_addr[3] = d;
		device->mac_addr[4] = e, device->mac_addr[5] = f;
		}
		}
}		}
}
/* read_mac(dev, device->mac_addr); */		// read_mac(dev, device->mac_addr);
return(device->fd);
		return device->fd;
}		}
/* ********************************** */		int tuntap_read (struct tuntap_dev *tuntap, unsigned char *buf, int len) {
int tuntap_read(struct tuntap_dev *tuntap, unsigned char *buf, int len) {		return read(tuntap->fd, buf, len);
return(read(tuntap->fd, buf, len));
}		}
/* ********************************** */		int tuntap_write (struct tuntap_dev *tuntap, unsigned char *buf, int len) {
int tuntap_write(struct tuntap_dev *tuntap, unsigned char *buf, int len) {		return write(tuntap->fd, buf, len);
return(write(tuntap->fd, buf, len));
}		}
/* ********************************** */		void tuntap_close (struct tuntap_dev *tuntap) {
void tuntap_close(struct tuntap_dev *tuntap) {		close(tuntap->fd);
close(tuntap->fd);
}		}
/* Fill out the ip_addr value from the interface. Called to pick up dynamic		// fill out the ip_addr value from the interface, called to pick up dynamic addr
* address changes. */		ess changes
void tuntap_get_address(struct tuntap_dev *tuntap)		void tuntap_get_address (struct tuntap_dev *tuntap) {
{
		// no action
}		}
#endif /* #ifdef __FreeBSD__ */		#endif /* #ifdef __FreeBSD__ */
End of changes. 18 change blocks.
89 lines changed or deleted		87 lines changed or added

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